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The effect of experience on the political attitudes of Korean college students | Korean student enter college singularly susceptible to the influence of their seniors, who tend to be critical of the Korean government and its relation to the United States, and by extension, the United States itself. One recent study involving 208 Korean college students suggested that the attitude of the great majority had become progressively less favorable, or more unfavorable toward the United States over a one-year-period, and more cynical concerning its motives. That study, however, did not control for age, and relied on students’ own impressionistic self-reports of their initial attitudes. The present study is a replication and extension of that one, using a panel of entering students, whose attitudes were measured during the first and last weeks of their first college semester. The results indicate that the change in attitude toward “anti-Americanism” occurs within this first semester. |
The Phraseology of Administrative French | The French administrative language of the European Union is an emerging discourse: it is only fifty years old, and has its origins in the French administrative register of the middle of the twentieth century, but it is also a unique contact situation in which translation has always played a pivotal role. Using the methodology of corpus linguistics, and a specially compiled corpus of texts, covering a range of genres, this book describes the current discourse of EU French from the perspective of phraseology and collocational patterning, and in particular in comparison with its French national counterpart. Corpus methodology and an inclusive notion of phraseology, embracing typical formulae, locutions , and patterning around keywords, reveal subtleties and patterns which otherwise remain hidden, and point to a discourse of EU French whose novel context of production has led it to be phraseologically conservative, compared with the administrative French of France. |
[Adolescents and chlamydia: cervix microbiology among adolescents; the first statistics of the family planning centers according to the Calmat law]. | Infertility due to Chlamydia trachomatis infection can be prevented by systematic screening of low genital tract infection. This screening is to be done systematically in women < 25 years old in Family Planning Centers. In France, according to Calmat's low, screening and treatment are anonymous and free of charges for adolescents and people without National Health care. In a foreseeable future, screening will be done for both sexes, by PCR or LCR, on first void urines. |
Theoretical and experimental studies on laser transformation hardening of steel by customized beam | An exact solution was developed for a quasi-steady-moving-interface heat transfer problem in laser transformation hardening by a beam customized to a flat-top rectangular shape. The absorption and release of the latent heat were taken into account. The solution provided the body temperature, heating rate, and subsequent cooling rate. Using the IT and CCT diagrams, the rapid austenitization and pearlitic/martensitic phase transformation were determined for prediction of the hardening effect. In the experimental study, a diffractive optical kinoform (DOK) was used to customize a conventional Gaussian laser spot beam to a flat-top rectangular beam. A reasonable agreement between the theoretical predictions and the experimental measurements was obtained. |
First evidence of globuli ossei in bird (Aves, Spheniciformes). Implications on paleohistology and bird behaviour | ABSTRACTGlobuli ossei are subspherical structures of endochondral origin that are inserted in the hypertrophic cartilage of long bones, and are related to paedomorphic phenomena. These structures are here described for the first time in Aves, concretely in a postcranial bone of an extinct Spheniciformes from Antarctica (Delphinornis arctowskii). Although it is difficult to infer the significance of the presence of these structures, they appear not to be related to adaptations to aquatic life or depend on the small size or ontogenetic stage of the specimen. A pathological origin for these structures lacks evidence sustaining this hypothesis. The data provided in this contribution reveals that the presence of globuli ossei in vertebrate long bones is not always linked with adaptations to aquatic life and/or paedomorphic processes. |
Ultrastructural localization of blood group antigens in human salivary glands. | The subcellular distribution of several blood group antigens was studied in human major and minor salivary glands by means of a postembedding immunogold staining method. In each gland, antigens were detected as secretory products and as cell surface components. A, B, H and Lewis (a,b,x,y) antigens were found in mucous cells depending on the ABO and secretor status; reactivities were confined to the secretory granules. In serous and ductal cells, both the secretory granules and cell membranes were reactive, but only for H, Le-b and Le-y irrespective of the ABO and secretor status. |
Effect of Ozonated Water on Postharvest Pathogens of Pear in Laboratory and Packinghouse Tests | In treatments with aqueous ozone solutions for 5 min, LD 95 values for spores of Botrytis cinerea, Mucor pinformis, and Penicillium expansum were calculated to be 0.99, 0.69, and 0.39 μg of ozone per milliliter of water, respectively. Spore inhibition was directly correlated with ozone concentration in 1- to 5-min exposure times; eight regressions of spore inhibition with concentration were significant at P=0.01, and one was significant at P=0.05 (...) |
Disaster mitigation based on smart structures/materials | The concept “Disaster Mitigation and Sustainable Engineering” is introduced comprehensively and several examples are shown in this paper. It is emphasized that it can be effectively realized in the field “smart materials and structural systems.” As serious disasters may not occur for a long period of time, and the structures for disaster mitigation suffer from vast amount of maintenance cost etc., they are better to be used daily. Their compactness and deploying function are also very useful. In order to demonstrate the concept, two examples having been experimentally tried are introduced, that is, artificial forests and deployable structure based on honeycomb to be used against flooding. Other examples and products in the world are also introduced and future directions are discussed. |
Several Thoughts on Improving College Libraries' Efficiency of Using Books under the Internet Environment | Net-reading is a historical trend.Net-reading plays a positive role in developing college students' personality,cultivating their interest in learning,expanding their scope of knowledge.Whereas many problems are exposed during the process of net-reading.Facing up to these problems,the libraries should advocate and guide our students to read,giving the library's function as main position into full play.This paper proposes four measures of improving the efficiency of using books under the Internet environment. |
Oxygen transfer in a stirred loop fermentor with dilute polymer solutions | Oxygen transfer in a 0.35 m diameter stirred loop fermentor (a stirred tank with a concentric draft tube) has been studied with water containing a small amount of polymer(polyethylene oxide) as a drag-reducing additive. |
On the critical behaviour of Φd2k from the massive continuum limit of the Ising model | Abstract The continuum limit of the first four renormalized vertices of the Ising model are derived from a large order strong coupling expansion in the regime in which the bare coupling is infinite and the renormalized mass held fixed. This method of computing the critical superpotential of Φ d 2 k is discussed for the euclidean dimension d . In one dimension, exact results can be obtained analytically, and the method remains perfectly reliable up to d = 2. Its validity is, however, unclear at higher dimension, for which we present some conjectures. |
Research Guides: Renaissance Art: Reference Sources | Welcome to the UCLA Library guide for research on Renaissance Art. This guide is intended as a starting place for researchers, pointing to tools for finding books, scholarly articles, reviews, and other topical and collection-related information. |
Novel Simulations of Energetic Materials: Circumventing Limitations in Existing Methodologies | Abstract : We present a methodology for the efficient calculation of the shock Hugoniot using standard molecular simulation techniques. The method is an extension of an equation of state methodology proposed by J. J. Erpenbeck and is considered as an alternative to other methods that generate Hugoniot properties. We illustrate the methodology for shocked liquid N(sub2) using two different simulation methods: (a) the Reaction Ensemble Monte Carlo method for a reactive system; and (b) the molecular dynamics method for a non-reactive system. The method is shown to be accurate, stable and generally independent of the algorithm parameters. We find excellent agreement with results calculated by other previous simulation studies. The results show that the methodology provides a simulation tool capable of determining points on the shock Hugoniot from a single simulation in an efficient, straightforward manner. |
ChemInform Abstract: Reactions of Organozinc Reagents with Potassium Bromodifluoroacetate. | A method is presented for the synthesis of gem-difluorinated compounds from organozinc reagents. |
Uncertainty Modeling and Experiments in H∞ Control of Large Flexible Space Structures | Approaches to uncertainty modeling for robust control of large flexible space structures (LFSSs) such as additive or multiplicative perturbations in /spl Hscr//sub /spl infin// do not work very well because of the special properties of LFSS dynamics. We propose the use of a left-coprime factorization (LCF) of LFSS dynamics in modal coordinates in order to get improved stability margins and performance in robust control design. The plant uncertainty is then described as stable perturbations of the coprime factors accounting for modal parameter uncertainty and unmodeled dynamics. Two multivariable /spl Hscr//sub /spl infin// designs based on LCFs of 46th-order collocated and noncollocated models of an LFSS experimental testbed are presented together with simulation and experimental results to illustrate the technique. |
증례 : 에디펜포스와 이프로벤포스 유기인 살균제 중독 치료경험 4례 | Organophosphate fungicides include edifenphos, iprobenfos and tolclofos-methyl. Edifenphos inhibits cell wall synthesis by reduction in chitin synthase activity and inhibits the action of acetylcholinesterase. Thus, exposure to this chemical results in excessive salivation, lacrimation, urination, defecation, gastrointestinal motility and emesis symptoms, just like other organophosphate insecticides. Although edifenphos is an organophosphate fungicide, it is the only agricultural chemical which inhibits the action of pralidoxime and atropine, an activity which in turn, inhibits treatment. Thus, we have to treat these cases as soon as possible with atropine and pralidoxime, using the same approach as used for exposure to other organophosphate insecticides. In this report we evaluate the results of treatment of 4 patients who were intoxicated by fungicides (3 cases with edifenphos and 1 case with iprobenfos). |
Norwegian teacher educators’ attentiveness to democracy and their practices | The aim of the study is to gain insight into teacher educators’ attentiveness to democracy, i.e. how they understand democracy and how they describe their own practices of instilling democratic competencies and values in pre-service teachers. Through using a questionnaire modified from the Global Doing Democracy Research Project, we elicited responses from 153 respondents. The material was analysed using “thin” versus “thick” notions of democracy and three categories of citizenship. The results of this study indicate that teacher educators primarily understand democracy as a societal structure, a way of politically organizing a society in which elections are a core activity. Hence, their practice reflects this somewhat thin understanding of democracy. Overwhelmingly, they perceive the two dominant ways of promoting democracy to be to encourage students to take part in formal participatory structures and to engage students in discussions and debates within the classroom. https://doi.org/10.26803/ijlter.17.7.2 |
Treatment of allergy to mould spores | The treatment of mould allergy is discussed in this article. The specific immunotherapy should be especially considered in this group of patients. |
Management and Utilization of Donated Document in the Library of the Heilongjiang Institute of Science and Technology | The paper has put forward suggestions that the management and utilization of donated documents is an important link in the library based on the current situation of donated document work in the Heilongjiang Institute of Science and Technology.It has proposed three main sources about donated documents in the library,and expounded in details the management and utilization of donated documents in the library. |
Synthesis, Thermal Decomposition Pattern and Single Crystal X-Ray Studies of Dimeric [Cu(dmae)(OCOCH3)(H2O)]2 | A dimeric precursor, [Cu(dmae)(OCOCH3)(H2O)](2) for the CVD of copper metal films, (dmaeH = N,N-dimethylaminoethanol) was synthesized by the reaction of copper(II) acetate monohydrate (Cu(OCOCH3)(2). H2O) and dmaeH in toluene. The product was characterized by m.p. determination, elemental analysis and Xray crystallography. Molecular structure of [Cu(dmae)(OCOCH3)(H2O)](2) shows that a dimeric unit [Cu(dmae)(OCOCH3)(H2O)](2) is linked to another through hydrogen bond and it undergoes facile decomposition at 300 degrees C to deposit granular copper metal film under nitrogen atmosphere. The decomposition temperature, thermal behaviour, kinetic parameters, evolved gas pattern of the complex, morphology, and the composition of the film were also investigated. |
Fletcher Steele, Landscape Architect: An Account of the Gardenmaker's Life, 1885-1971 | For 60 years Steele practised landscape architecture as a fine art, designing nearly 700 gardens that form an important link between 19th-century Beaux Arts formalism and modern landscape design. |
Total dose irradiation and hot-carrier effects of sub-micro NMOSFETs | Total dose irradiation and the hot-carrier effects of sub-micro NMOSFETs are studied.The results show that the manifestations of damage caused by these two effects are quite different,though the principles of damage formation are somewhat similar.For the total dose irradiation effect,the most notable damage lies in the great increase of the off-state leakage current.As to the hot-carrier effect,most changes come from the decrease of the output characteristics curves as well as the decrease of trans-conductance.It is considered that the oxide-trapped and interface-trapped charges related to STI increase the current during irradiation,while the negative charges generated in the gate oxide,as well as the interface-trapped charges at the gate interface,cause the degradation of the hot-carrier effect.Different aspects should be considered when the device is generally hardened against these two effects. |
Good, Better, Best: Becoming an Even Better Teacher | Want to be a better teacher? Yes, Brian Brennan explains, is the first step. The second? Understanding that you can't keep doing the same things and expecting different results. |
"O" Canada: Four Alphabet Books and One to Count On | A review of A Seaside Alphabet , by Donna Grassby; Play Mas'! A Carnival ABC , by Dirk McLean; The City ABC Book , by Zoran Milich; "C" is for Canada , by Vicki Berger Erwin; One is Canada , by Maxine Trottier. |
Management accounting for sustainable development. Part 2: from economic to ecological efficiency | Accountancy does not stand apart from the society in which it operates. As society's understanding of efficiency changes, so too must that of the accountant. As you will read in this article, environmental efficiency has changed accountancy practice in many ways. There is, however, potential for more change to come. As we discussed last month in the introductory article to this series, industrial activity will be sustainable -- this is not `an offer we can't refuse' -- it is a definition. If an industrial activity is not sustainable, it will either stop or it will have to change ... |
Identifying the physics of the ridge via three-particle $\Delta\eta$-$\Delta\eta$ correlations in high energy nucleus-nucleus collisions | We report the first three-particle correlation results in pseudorapidity ($\Delta\eta$) between a high transverse momentum ($p_{\perp}$) trigger particle and two lower $p_{\perp}$ associated particles within azimuth $\mid$$\Delta\phi$$\mid$$<$0.7 in $\sqrt{{\it s}_{NN}}$ = 200 GeV $d$+Au and Au+Au collisions. Charge ordering properties are exploited to separate the jet-like component and the long-range $\Delta\eta$ ridge. The results indicate that the particles from the ridge are uncorrelated in $\Delta\eta$ not only with the trigger particle but also among themselves event-by-event. In addition, the ridge appears to be unrelated to the presence of the narrow jet-like component. |
Mesoporous tertiary oxides via a novel amphiphilic approach | We report a facile biomimetic sol-gel synthesis using the sponge phase formed by the lipid monoolein as a structure-directing template, resulting in high phase purity, mesoporous dysprosium- and gadolinium titanates. The stability of monoolein in a 1,4-butanediol and water mixture complements the use of a simple sol-gel metal oxide synthesis route. By judicious control of the lipid/solvent concentration, the sponge phase of monoolein can be directly realised in the pyrochlore material, leading to a porous metal oxide network with an average pore diameter of 10 nm. |
Virtual orbital transformation prior to configuration interaction with localized orbitals | A virtual orbital transformation is proposed involving pairing of localized occupied orbitals with virtual orbitals. The virtual orbitals are transformed so that each virtual orbital is as “close” as possible to its occupied counterpart, where closeness is the inverse of the particular definition of localization. The appropriate transformation is derived for the special case of Foster–Boys localization, and an illustrative CNDO/2 calculation on HNO is presented. INDO CI results on the series N2, CO, BF indicate that use of this transformation may reduce the number of energetically significant configurations. |
Anhydrous proton transport system based on zwitterionic liquid and HTFSI. | Novel binary ionic liquids based on zwitterionic liquid and HTFSI for anhydrous proton transport were prepared and showed ionic conductivity of about 10(-2) S cm(-1) at 150 degrees C and a zwitterionic liquid content of 60 mol%. |
On Forming and Solving Methods of Enterprises' Receivable Account | At present, many enterprises take cred it sale in order to enlarge sale and improve market shares.But, this actuality makes receivable account s on account for a long time and the total amount of it is increasing year by year.So, in fact, the enterprises are at a loss.This article analyzes this problem and puts forward some countermeasures. |
Probing CP-violating Higgs and gauge boson couplings in the Standard Model effective field theory | We study the phenomenological consequences of several CP-violating structures that could arise in the Standard Model effective field theory framework. Focusing on operators involving electroweak gauge and/or Higgs bosons, we derive constraints originating from Run I LHC data. We then study the capabilities of the present and future LHC runs at higher energies to further probe associated CP-violating phenomena and we demonstrate how differential information can play a key role. We consider both traditional four-lepton probes of CP-violation in the Higgs sector and novel new physics handles based on varied angular and non-angular observables. |
Tuberculin reaction in pulmonary tuberculosis in the Asir Region of Saudi Arabia. | The Mantoux test was performed on 75 Saudi and Yemeni patients with pulmonary tuberculosis using 2TU of PPD-RT23; 82.7% of these patients had a positive skin test. It was also noted that, contrary to findings in the West, old age does not seem to affect the Mantoux reaction adversely. 9 patients had a non-significant reaction and using the 3-step 'boosting', 8 of the 9 (88.9%) non-reactors converted to positive. Despite the low number of patients included in our study, we recommend 3-step 'boosting' when doing tuberculin skin testing in Third World Countries in order to bring out the true tuberculin 'reactors'. |
Educating the local clergy, c. 900-c.1150 | The research for this paper was conducted with the support of the Humanities in the European Research Area ::: funded project, After Empire: Using and not using the past in the crisis of the Carolingian world, c. 900-c.1050 ::: (UNUP), funded from the European Union’s Research and Innovation Horizon 2020 programme under grant ::: agreement no. 649387 |
Which it is intended to form an anastomosis, approximate tissue portions instrument, and a method for performing anastomoses in tracts of the digestive tract | A is intended to form an anastomosis to provide equipment to approximate tissue portions. A The instrument includes a guide means adapted to pass through the first tissue portion 12 and the second tissue portion 14 to be connected by anastomosis. The instrument, in order to approximate the first tissue portion 12 and the second tissue portion 14 to be connected by anastomosis, further comprising an anastomotic device 10. Guide means adapted to pass through the tissue portions to be connected, at least two guide wires A, made B, to receive at least anastomotic device 10, and pulling, the first to be connected by anastomosis approximate tissue portions 12 and the second tissue portion 14. Guide wires A, B is located next to each other, it is suitable for forming a loop passing through the tissue portions to be connected. .The 18 |
A Sharp Bézout Domain is an Elementary Divisor Ring | In the present paper, we assume that all rings are commutative rings with nonzero identity. Let R be the domain of integrity and let K be its field of fractions. An overring of the ring R is defined as an arbitrary domain of integrity that lies between R and K. A ring of fractions of the domain R is defined as an overring of the domain of integrity R of the form RS , where S is a multiplicatively closed set from R \ {0}, We say that RS is a prime ring of fractions of the domain R if S = R\P for some proper simple ideal P of the ring R. We use the notation tom [7, p. 228] and, in this case, write RP = RS . By mspecR, we denote the set of all maximum ideals of the domain of integrity R. In [1], Gilmer introduced the notion of a sharp domain by using the “property (#).” We say that R has the property (#) if the following relation is true for any two different subsets M and N from mspecR : \ |
An Empirical Study on Foreign Economic Growth of Six Provinces in Central | Through establishment of the 2002-2012 index system and an analysis of the thus-obtained degree of foreign trade dependency, degree of foreign capital dependency and degree of openness in six provinces in central China, the conclusions regarding the foreign economy development in these provinces are: the foreign economy in the six central provinces is growing faster; foreign trade has contributed more to the economic development than foreign capital investment; there are three levels of internal foreign economy in the six provinces: higher, intermittent and lower; the foreign economy in the six provinces lags far behind the average nationwide foreign economy. Based on the above conclusions, this paper proposes: the six provinces in central China shall open more to the outside world; new developing strategies shall be made according to the economic situation in each province; the value of foreign trade shall be improved and foreign investment set more store by. |
Constraints on the uncertainties of entangled symmetric qubits | We derive necessary and sufficient inseparability conditions imposed on the variance matrix of symmetric qubits. These constraints are identified by examining a structural parallelism between continuous variable states and two-qubit states. Pairwise entangled symmetric multiqubit states are shown here to obey these constraints. We also bring out an elegant local invariant structure exhibited by our constraints. |
Intermolecular -CH(3)...O(2)N-- contacts in two polymorphic modifications of (1E)-N'-[(E)-2-cyano-1-(dimethylamino)-2-nitrovinyl]-N,N-dimethylethanimidamide. | The title compound was synthesized and isolated in two crystal modifications. The structure of the orthorhombic modification was determined by the X-ray powder diffraction method and the structure of the monoclinic modification was determined using the X-ray single-crystal diffraction technique. The molecules in both polymorphs are E,E isomers. Intermolecular H(3)C....NO(2) contacts and their role in the formation of the polymorphic modifications are analyzed. |
Work samples as measures of performance | A switch guard assembly for preventing accidental actuation of a switch, the assembly including a switch plate and a box-shaped member mounted on the switch plate and having a front wall formed with a surface disposed substantially parallel to the switch plate, and the front wall being closed against access by the fingers of an operator's hand through the front wall to a switch actuator extending out of the switch plate, the box-shaped member having at least one fully open side for affording access to the switch actuator by the fingers of an operator's hand. |
On the Latency in Vehicular Control using Video Streaming over Wi-Fi | We consider the use of Wi-Fi (IEEE 802.11n/r) network for remote control of a vehicle using video transmission on the uplink and control signals for the actuator on the downlink. We have setup a network with multiple access points (AP) providing indoor and outdoor coverage, which connects an unmanned ground vehicle (UGV) to a remote command center. Additionally, our setup includes a redundant IEEE 802.11p link for sending control messages over downlink with high reliability and low latency. We study the end-to-end communication delay and complete a latency profiling for each sub-component, including the video codec and the Wi-Fi links. Furthermore, we provide guidelines for practical design choices including the optimal configuration of the scanning process during handoffs and the codec parameters for delay optimization. Overall, our proposed configuration reduces the end-to-end delay significantly in comparison with the default configuration. |
A fourier integral density estimate: a Monte Carlo study | Davis (1977) proposed the use of a kernel density estimate which is the sample characteristic function integrated over (-A(n) , A(n)), where A(n) is chosen to minimize the mean integrated square error of the estimate. The scalar, A(n), is determined by the sample size and the population characteristic function. This paper investigates, in a Monte Carlo study, the mean integrated square error obtained under a procedure suggested by Davis (1977) for estimating A(n) when the population characteristic function is unknown. |
Climate change and normativity: constructivism versus realism | Is liberalism adaptable enough to the ecological agenda to deal satisfactorily with the challenges of anthropogenic climate change while leaving its normative foundations intact? Compatibilists answer yes; incompatibilists say no. Comparing such answers, this article argues that it is not discrete liberal principles which impede adapatability, so much as the constructivist model (exemplified in Rawls) of what counts as a valid normative principle. Constructivism has both normative and ontological variants, each with a realist counterpart. I argue that normative constructivism in the Rawlsian mode, whatever its strengths elsewhere, is markedly ill‐equipped to deal with the particular normative challenges posed by climate change – and that that these doubts holds regardless of which stance is adopted as its ontological corollary. |
Impact of road run-off on receiving streams in Eastern England | Invertebrate samples from nine East Anglian rivers were collected above and below crossings of the A12 and A14 trunk roads in spring and summer 1996 to assess any impact due to road run-off discharges. The Biological Monitoring Working Party (BMWP) score, average score per taxon (ASPT) and Shannon diversity index values were compared between upstream and downstream sites. Only the BMWP score was significantly lower in summer at downstream sites in those rivers crossed by the A12. Zinc, lead and cadmium concentrations in sediments and invertebrates (Asellus aquaticus, Gammarus pulex, Sialis lutaria) did not differ significantly between upstream and downstream sites. There was a significant relationship between metal concentrations in sediments and invertebrates only for lead. Road run-off from these trunk roads appears to have no major impact on the receiving streams. |
[An unusual variant of secondary recurrent syphilis in an HIV-infected patient]. | Asymptomatic syphilis eventually manifesting with symptoms of the secondary disease was observed in a male with HIV-infection. Large focuses of alopecia reported in this male are suggested as a clinical marker of HIV-infection. A defective antibody response to T. pallidum in HIV-infection has been confirmed. Levomycetin (0.5 g 4 times a day in 5-20-day courses at two-week intervals) proved highly effective as compared to penicillin, erythromycin and tetracycline administration due to poor tolerance of the above antibiotics. |
Grain growth kinetics and electrical properties of CuO doped SnO2-based varistors | Abstract Up to now, attempts for developing coarse-grained SnO2-based varistors which exhibit high nonlinearity property at lower voltage have become a challenge without any prominent result because of its unknown grain growth mechanism. In this study, the effect of CuO addition to SnO2-based varistors as a grain growth enhancer additive on microstructural development, grain growth kinetics, and electrical properties was investigated. The characterization of grain growth kinetics showed that CuO addition encouraged grain growth and enhanced the grains size as it could be seen in the activation energy which decreased from 594 kJ/mol to 364 kJ/mol. In the samples with a low amount of CuO, the solute drag force is the controlling mechanism of grain growth. By further addition, the mechanism changed to the Sn4+ solution-precipitation in CuO-rich liquid phase. Also, the electrical properties of CuO doped samples showed that they are so promising for low voltage applications. |
Novel synthesis method for thermally stable monoclinic zirconia | Abstract Zirconium alkoxide which was thermally pre-treated in an inert organic solvent was hydrolyzed at 250–300°C with a limited amount of water dissolved in the solvent from the gas phase. This procedure afforded microcrystalline (5.8 nm) monoclinic zirconia which showed a high thermal stability and retained large surface areas of 162 and 76 m 2 /g even after calcination at 500 and 900°C, respectively. Thermal pre-treatment in the absence of water above 250°C was essential to avoid the formation of the tetragonal form. |
Quality control of phenylbutazone I: Analysis of phenylbutazone and decomposition products in drugs by tlc | A modified TLC procedure for the analysis of phenylbutazone and its degradates on silica plates is reported. This method avoids phenylbutazone degradation in situ by chelating the iron of the silica plate, which allows rapid characterization with a fluorescence indicator. A selective and sensitive assay of phenylbutazone (0.025 μg), using a chromatographic spectrophotometer, was performed on silica plates without a fluorescence indicator. Quantitative analysis of an injectable solution is outlined. |
Assessment of intraplaque neovascularization in carotid artery with contrast-enhanced ultrasound | Carotid atherosclerotic plaques is the basis of acute cerebrovascular disease.Many studies have demonstrated that inplaque neovascularization is associated with clinically symptoms.Intraplaque neovascularization in carotid artery can be detected by CEUS,which has become important method for assessing intraplaque neovascularization. |
A method of assembling a base of formula | The present invention discloses an assembled chassis, comprising a base unit and a connection means for connecting the base unit, provided with a plurality of parallel grooves arranged in the bottom of the base unit, a groove disposed along the longitudinal direction of the base unit, connected to connecting rod means comprises means provided in the bottom of the base and provided on both sides of the base unit levers, connecting rods and levers are telescopic structure, comprising levers projecting pole piece and pole symmetrically disposed at both ends of levers on the reverse side of the projecting pieces provided with a spring, the ends of the spring is fixed to the ends of the levers. A method of assembling the present invention provides the base formula, a simple structure is easy to manufacture and easy to use, suitable for widespread use, has a good prospect. |
Tables of Calculated Transition Probabilities for the A-X System of OH | Abstract : Calculations have been carried out for the electronic transition probabilities as a function of vibrational and rotational level for the A-X system of the OH molecule. The electronic transition moment used is of hyperbolic form, combining a linear form at small internuclear distance with a smooth asymptotic behavior at large internuclear distance patterned after ab abinitio calculations. Wavefunctions were obtained using the RKR method. Presented in this report are full tables of transition probabilities, Einstein emission coefficients, and Einstein absorption coefficients for a wide range of levels. |
Influence of the phase separation on the linear viscoelastic properties of a polystyrene-poly(vinyl methyl ether) blend | The linear viscoelastic properties of a mixture of polystyrene (PS, Mw = 2.95 × 106 g mol−1, 10 wt%) and poly(vinyl methyl ether) (PVME, Mw = 75 000 g mol−1, MwMn = 1.6, 90 wt%) have been investigated in the temperature range 40–190°C. From small angle light scattering (SALS) and turbidity measurements the phase separation temperature has been determined to be at 106 ± 1°C. The composition was chosen because it was close to the critical composition. Thus, phase separation is expected to occur by spinodal decomposition. At temperatures T < Tc the relaxation behaviour is dominated by the relaxation of the lower molecular weight PVME. A second plateau zone which corresponds to a diluted PS is clearly resolved. Well within the phase-separated regime the frequency dependence of the storage and the loss modulus, G′ and G″, is proportional to ϵ0.6. |
Expression of p27 in renal interstital fibrosis in rats induced by unilateral ureteral obstruction | Objective To explore the role of p27 in the renal tubule on the process of renal interstitial fibrosis caused by unilateral ureteral obstruction(UUO) in rats. Methods Rats were killed at the 7th, 14th, 21st days after UUO or sham-surgery. The protein expression of p27 in renal tubule was detected by immuohistochemistry at each time point. Results At the 7th day after the surgery, no noticeable abnormalities of p27 expression were found in renal tubular cells between UUO and the sham operated surgery. At the 14th and 21st days after UUO, the p27 expressions in renal tubular cells obviously decreased compared with those after the sham operated surgery. Conclusion The p27 expression has no noticeable changes in the early UUO rats, and then it was significantly reduced with the renal interstitial fibrosis progressing. |
BENCHMARK PROBLEMS FOR THE VALIDATION OF EDDY CURRENT COMPUTER CODES | The papers in this special issue of COMPEL describe six benchmark problems that can be used to validate eddy current computer codes. The papers include computational results to the problems. The results were presented at six workshops for the comparison of codes held in Europe, America, and Japan between March 1986 and August 1987. |
Analysis on the Property Rights of Accounting Information Nature,Function and Institutions Change in Enterprise Contract | Accounting information has the nature of property right,on essence,it is the economic resource that forms enterprise contract,which can bring economic benefit for specific part.It includes the rights of provide control and the rights of demand control and functions such as right and decides two groups of rights bundle of accounting information quality and enterprise value distribution orientations.By ranging institutions of effective enforcement to perfect the structure of property rights,developing the function of property rights,inhuman capital owners and human capital owners can share the property rights of accounting information,and talents are effective to encourage and supervise related benefit main part,which will raise accounting information quality and realize enterprise value. |
An effect of haloperidol on the increased food and water intake induced in rabbits by 2-deoxy-D-glucose. | Rabbits treated with 2-deoxy-D-glucose (2DG) (300 mg/kg) show an increased intake of food and water. Pretreatment with haloperidol (1 mg/kg) abolishes the increase in water intake but does not prevent the increase in food intake. |
Pause for thought—a chance for amendments? | The newly proposed health policy is facing a pause while the government considers amendments to the controversial Health and Social Care Bill |
Stress corrosion cracking of Ru doped 304 stainless steel in high temperature water | In pressurised water reactor primary water, there is generally growing concern that stress corrosion cracking (SCC) may occur in occluded locations where residual oxygen and other impurities may be trapped. For these critical components, the deployment of more SCC resistant materials is desirable. In this paper, the effect of 1 wt-%Ru additions on the SCC susceptibility of 304 austenitic stainless steels was investigated in high temperature water. Slow strain rate tensile tests were performed on standard and 1 wt-%Ru modified 304 stainless steels in both sensitised and cold worked conditions. Preliminary results showed that, although both ruthenium doped and standard 304 stainless steels exhibited intergranular SCC, the former was less susceptible as indicated by a greater strain to failure. The results obtained suggest an improved performance of the Ru doped 304 stainless steel towards SCC susceptibility in these environments. |
Literary Mystery: Walt Whitman's "Year of Meteors" | A team of astro-sleuths from Texas State University once again sets the record straight this time for one of America's most famous poets. |
Application of thigh anterolateral musculocutaneous flap in renovation the defect of tongue root | Objective To evaluate the clinical effect of thigh anterolateral musculocutaneous flap for renocation in defect of tongue root.Methods Review and follow-up one case with squamous cell carcinoma of tongue root who accepted renocation of defect by thigh anterolateral musculocutaneous flap.Results The wound healing was good after operation.The contour of tongue body looked well after1/2 year of operation. The function of swallow and speech was satisfactory.Conclusion The thigh anterolateral musculocutaneous flap has a constant vessel pedicle of artery and the subcutaneous fat is thicker.It is fit to repair the defect of soft tissue of tongue root.The wider caliber of cessel is easy to anastomosis.The supply area is concealed. |
Acceleration of a VLIW processor with dynamic reconfiguration | Apart from prototyping, reconfigurable architectures find mainly their utility in speeding up the arithmetic or logical treatments. To achieve this goal, it is possible to use a reconfigurable architecture to discharge the processor host from the too complex treatments or for which it is not adapted. The complexity of the treatments entrusted to the coprocessor then varies according to the mode of coupling between this last and the host processor which even influences the cost of communications. This research examines the role of dynamically reconfigurable logic in systems-on-chip (SOC) design. Specifically, in this paper, we carried out the modes of coupling the dynamically configurable cluster DART with a VLIW processor. The implementation of a WCDMA receiver allowed to make qualitative study of various techniques of coupling and to evaluate the performances of the Lx/DART architecture. |
Introducing the IEEE Open Journal of Antennas and Propagation | The IEEE Open Journal of Antennas and Propagation is live! It is with great pleasure and sincere privilege, as the inaugural Editor-in-Chief, that I am writing this message to introduce the first volume of the IEEE Open Journal of Antennas and Propagation (OJAP), the first gold fully-open access journal of the IEEE Antennas and Propagation Society (AP-S). |
Analysis of cyclic load die forming for woven jute fabric 3D reinforcement polymeric composites | 2D fabrics are used widely and to good effect as a reinforcement for many planer composites and simple curved structures, i.e. a cylindrical arc. There are, however, manufacturing difficulties in t... |
Ethics, Accountability and the Social Professions | This book explores the far-reaching ethical implications of recent changes in the organization and practice of the social professions (social work, community and youth work), drawing on moral philosophy, professional ethics and new empirical research by the author. What does the development of external regulation and audit mean for the autonomy, discretion and creativity of practitioners? How does inter-professional working in community mental health, youth offending or neighbourhood regeneration challenge conceptions of professional identities and roles? What relevance does an ethics of proximity, care or virtue have for professional ethics, alongside more abstract, principle-based approaches? |
On water-pollution Administering Strategy by Analyzing the Current State of Water Resourse in Our Country | The authors set out from the water shortage,serious water waste and increasing water-pollution to analyze the current state of our water resourse,putting forward an administering strategy to future water pollution problem.; |
Experimental Study on the Optical Constant of Aerosol Particle in Harbin Area | Aerosols exist in the environment widely,which have a non-ignorable impact on human health and climate.Therefore,the accurate detection of aerosols is an important research work in the environmental science.In this paper,combined with Mie theory and K-K relation,the transmission method is used to measure infrared spectral transmittance to retrieve the equivalent optical constants of aerosol particles in Harbin area.Simultaneously,it provides reference data for the detection of aerosols in Harbin area.The results show that:(1) the inverse model used in this paper was proved reliable by retrieving the optical constants of coal ash particles in the reference paper;(2) the equivalent optical constants of aerosol particles,which collected in sandstorm weather and sunny weather in Harbin area,have a similar change rule.The real part of optical constants in Harbin ranges from 1.45 to 1.7,and the imaginary part ranges from 0 to 0.3. |
AN ADAPTIVE BEAMFORMER BASED ON ADAPTIVE COVARIANCE ESTIMATOR | Based on the Minimum Variance Distortionless Response-Sample Matrix Inversion (MVDR- SMI) method, we propose a novel Adaptive Covariance Estimator (MVDR-ACE) beamformer for adaptation to multiple interference environments. The MVDR-ACE beamformer iteratively determines a minimum number of data samples required while maintaining its average signal-to-interference-noise to be within 3dB from the performance of a theoretical optimum MVDR beamformer and meeting an instantaneous interference cancellation requirement. Finally, based on numerical simulations, we analyze and validate the performance of the MVDR-ACE beamformer. We also compare its performance to the conventional MVDR-SMI beamformer that uses a flxed data sample in its covariance estimator. |
Synthesis of functionalized 1,2,4-triazole-3-thiones from ammonium isothiocyanate, acid chlorides, and arylhydrazines | An efficient synthesis of 1-aryl-5-aryl(alkyl)-1,2-dihydro-3H-1,2,4-triazole-3-thiones via reaction between ammonium thiocyanate, acid chlorides, and arylhydrazines is described. |
Unusual catalytic activity of analogues of 2-iodoxybenzoic acid in the hydrolysis of active phosphates | Abstract 2-Iodoxybenzoic acids catalyze the hydrolysis of active phosphorus esters with ca. 60–110% of the efficiency of their 2-iodosobenzoic acid analogues. Iodoxy compounds with considerable potential for use as phosphorus decontamination agents have been synthesized. |
Why Don't Things Go Wrong More Often? Activation Energies: Maxwell's Angels, Obstacles to Murphy's Law | Students often invoke Murphy's Law when inanimate "things go wrong", when skis break or fires occur or instruments fail due to corrosion or tires unexpectedly wear out. But why don't similar upsetting events happen to everyone every minute? Unwanted combustion and corrosion of common materials, although energetically favored, are not kinetically instantaneous. (The second law of thermodynamics is time's arrow but chemical kinetics is time's clock.) Chemistry students learn that chemical changes are usually obstructed by activation energy barriers whose origins lie in the energy required for bond breaking as new bonds are formed. Thus, activation energies act as obstacles to Murphy's Law in being deterrents to undesirable reactions and, lightly, as our "Maxwell's Angels". The fracture of solids - whether surfboards or car fenders - also involves breaking chemical bonds. However, such incidents are classed as physical changes because the free energy of the fragments is not notably different from the unbroke... |
Large Cardiac Fibroma – A Case Report of Sudden Death in A 10-Year-Old Child | ABSTRACT Introduction: Cardiac fibroma is a rare benign tumor, although it is considered the second most frequent cardiac tumor in children. It is located in the ventricular myocardium, frequently in the interventricular septum. One third of the cases are asymptomatic, being discovered postmortem. Case presentation: A 10-year-old male child accused severe dyspnea a few minutes before its sudden death. Autopsy examination revealed hypertrophic cardiomegaly, the entire left ventricular wall being replaced by an enlarged tumor mass. On histopathological examination, the tumor was diagnosed as cardiac fibroma. Conclusions: Noninvasive examinations during childhood, such as cardiac ultrasound, increase the early detection of the tumors of the heart, decreasing the number of sudden death cases in young patients, especially children. |
L1-convergence of modified complex trigonometric sums | In this paper, we shall study the L1-convergence of complex form of modified cosine and sine sums as a02+ ∑ k = 1n ∑ j = knΔ(ajcosjx) and ∑ k = 1n ∑ j = knΔ(ajsinjx). Also, using the complex form of above modified trigonometric sums, we shall obtain a new necessary and sufficient condition for the L1-convergence of Fourier series. |
Differences in binding of lectin-gold conjugates by Trypanosoma cruzi and Blastocrithidia triatomae (Trypanosomatidae) in the intestine of Triatoma infestans (Reduviidae) | Two species of trypanosomatid flagellates, Trypanosoma cruzi and Blastocrithidia triatomae which develop in the intestine of Triatoma infestans, were incubated with lectin-gold conjugates to demonstrate sugar components of the cell surface with the electron microscope. T. cruzi, strain “Chile 5” (zymodeme 1), bound SBA-gold, revealing N-acetyl-galactosamine and/or galactose residues. WGA-BSA-gold, specific for N-acetylglucosamine, did not bind to the surface of this flagellate. On the other hand, N-acetyl-glucosamine bound WGA-BSA-gold on the cell membrane of epimastigotes and cysts of B. triatomae, whereas SBA-gold was not bound by flagellates which were attached to the midgut epithelium and the rectum cuticle. Among other criteria, these differences in lectin binding may facilitate the discrimination of the two parasite species in the vector of Chagas' disease. |
The flavanoid components of the leaves of Acacia saligna | Chlorophyll-freeAcacia saligna leaves were successively extracted with ether, ethyl acetate, ethanol and water. The ethanol extract (10.14 %), constituting the highly phenolic components was subjected to chromatographic analysis whereby raffinose, sucrose, glucose and fructose were identified as free sugars together with the flavonoid glycosides quercitrin (quercetin-3-rhamnoside), astragalin (kaempferol-3-glucoside) and myricitrin (myricetin-3-rhamnoside). Acid hydrolysis, reference chromatography, C, H-analysis and U.V. spectrophotometric measurements confirmed the identity of the flavonoid glycosides. |
Effect of irradiance on growth, physiological processes and yield of melon (Cucumis mela) plants grown in hydroponics | The effect of different irradiance levels on melon (Cucumis mela) cv. Birdie, Charity Ball and Jade Dew grown ::: in hydroponics was investigated. Plants were exposed to mean daily irradiance levels of 11.4,8.2, 6.1 and 3.0 MJ ::: m-2 day-1 achieved by using different levels of shade. The dry matteryield appeared to be directly proportional to the ::: irradiance level received by plants. Stomatal conductance and photosynthetic rate were highest when the plants were ::: grown under the highest irradiance level. Plants grown under 11.4 MJ m-2aI had the highest fruit fresh weight and ::: total soluble solids. All cultivars failed to fruit when grown under irradiance of 3.0 MJ m-2aI ::: . |
The Design of VoIP Terminal Device Based on DM365 | This paper presents the whole hardware and software framework of the VoIP portable device based on DM365,focusing on power management,voice codec module and wireless module.It mainly explains the local part of recording.This terminal device has the function of recording,supporting G.711,storage and playback.It can be used for voice communications via 3G or Wi-Fi combined with network transmission protocol. |
The peak effect induced by Al and Mn in top-seeded melt-grown YBCO bulk superconductors | The effects of Al and Mn doping in top-seeded melt-grown YBCO (yttrium barium copper oxide) bulk superconductors are studied. It is shown that Al and Mn can substitute in the Y123 lattice, as reflected by a peak effect in the field dependence of the critical current density at 77 K. It is also shown that the formation of a Cu2Mn3Ba6Oy compound can be responsible for a deviation from the behavior expected for Mn addition. The influence of an oxygenation procedure on the peak effect caused by Al is presented. |
Campylobacter jejuni gastroenteritis in Turkish children | Four hundred children between the ages of 1 month and 14 years with the complaint of diarrhea were studied to assessCampylobacter jejuni isolation rates in childhood acute gastroenteritis in Turkey and to clarify clinical presentations ofC. jejuni enteritis.C. jejuni was found to be the second most common isolate with a rate of 8.3%, the first beingShigella strains. The highest isolation rate was in the 6 to 14-year age range at 12%. The most frequent symptoms in patients withC. jejuni enteritis were abdominal pain (51.5%), vomiting (36.4%) and fever (30.3%). Stool examination revealed bloody mucous stool in 51.5% of the patients, and erythrocytes and/or leucocytes were detected in 42.4%. Only 12.1% of the patients withC. jejuni enteritis were hospitalized in this study. |
Transcatheter Occlusion ofthePersistently Patent DuctusArteriosus Forty-Month Follow-up andPrevalence ofResidual Shunting | ofthese smallresidualshuntshasnotbeenassessedin medium-termfollow-up. Musewe et a17 followed an initial cohort of 77patients through 1 year with color-flow studies andfound a residual shunt rate of 19%. Speculation atthat time was that further spontaneous occlusionmight occur. The role of second occlusion was onlybriefly examined, with five patients having a seconddevice placed with a successful outcome.The data from this study demonstrate an 8%residual shunt at 40 months of follow-up for 186patients treated with catheter ablation for patentductusarteriosus. Toexaminetheefficacyofasingle-occlusion procedure in completeresolution ofductalflow, the nine patients with a second device place-mentwereexcludedfromtheanalysis, |
Investigation On Flow Field In Simplified Piston Bowls for Di Diesel Engine | AbstractThree-dimensional flow calculations of the in-cylinder flow for a direct-injection Diesel engine have been carried out with different combustion chambers. In order to assess the decisive factors for the formation and evolution of the in-cylinder flow field, simplified piston bowls were used. A limited number of validation calculations of the compression stroke were performed. The results show that the geometries of the piston have a significant influence on the distribution of the cross section-averaged swirl ratio. The tangential velocity profiles at the cross sections are highly nonlinear, and the rigid body rotation assumption is less admissible. Furthermore, the turbulence in four combustion chambers is analyzed for an insight of the effects of bowl shape, initial swirl ratio and squish. It is found that the squish flow plays a significant role in the turbulence generation process near the top dead center (TDC) during compression. The coupling among the swirl, squish, bowl shape and turbulence... |
Radiological evidence of growth in children with acute leukemia treated with folic acid antagonists. | The ability of folic acid antagonists to provide temporary bone marrow remissions in children with acute leukemia has been described by many investigators since the initial account by Farber and his co-workers (2). A clinical report from this laboratory by Poncher et al. (4) provided corroborative evidence that antagonists were able to prolong life and that temporary bone marrow remissions were accompanied by definite improvement in the osseous manifestations of the disease. The average duration of life in untreated acute leukemia patients was five and a half months and in the folic acid antagonist-treated group thirteen and a half months. This prolongation of life was shown to be statistically significant. Since the growth process appeared to be uninterrupted in spite of the long duration of the disease (more than two years in several cases), it seemed of interest to evaluate radiographic findings in 21 patients treated prior to the antagonist era, and in 43 patients to-whom antagonists were administered... |
Comparison of written-in repeatable runout for servo-writing with different spindle speeds | With the increasing track density in hard disk drives (HDD), the head positioning mechanisms need to follow tracks more accurately. Due to limited servo bandwidth, the repeatable runout (RRO) induced from servo writing will be a significant track misregistration (TMR) source, especially the high frequency harmonics of RRO. In order to study the written-in RRO, an experimental test stand was developed to write servo pattern and measure track profile under different spindle speeds. Our experimental results showed that RRO was reduced 2.41% of track (0.41 /spl mu/m) with writing servo pattern at 3600 rpm compared to that at 5400 rpm. |
Large-Scale Brain Systems and Subcortical Relationships: Practical Applications | This article describes an interactive paradigm for understanding brain functioning. This model requires both explicit and implicit learning processes. This paradigm is illustrated through the interpretation of practical examples of behavior. Applications of current neuropsychological tests are presented within this interactive paradigm. The development of new neuropsychological tests is presented, as derived from experimental test paradigms that evaluate implicit learning processes. |
Stream Control and Oxygen Solubilization Using a Cross Flow Fan in an Agitating Bioreactor | Development of novel agitating manner for a bioreactor is important for advance of biochemical engineering. Most of bioreactor in conventional use is an agitating tank with some kind of impellers. |
Distributional Similarity, Phase Transitions and Hierarchical Clustering | We describe a method for automatically clustering words according to their distribution in particular syntactic contexts. Words are represented by the relative frequency distributions of contexts in which they appear, and relative entropy is used to measure the dissimilarity of those distributions. Clusters are represented by "typical" context distributions averaged from the given words according to their probabilities of cluster membership, and in many cases can be thought of as encoding coarse sense distinctions. Deterministic annealing is used to find lowest distortion sets of clusters. As the annealing parameter increases, existing clusters become unstable and subdivide, yielding a hierarchical "soft" clustering of the data. |
Biogenesis ofPseudomonas aeruginosatype IV pili and regulation of their function | Summary ::: ::: Type IV pili (T4P) are bacterial virulence factors involved in a wide variety of functions including deoxyribonucleic acid uptake, surface attachment, biofilm formation and twitching motility. While T4P are common surface appendages, the systems that assemble them and the regulation of their function differ between species. Pseudomonas aeruginosa, Neisseria spp. and Myxococcus xanthus are common model systems used to study T4P biology. This review focuses on recent advances in P. aeruginosa T4P structural biology, and the regulatory pathways controlling T4P biogenesis and function. |
ELECTROPOLYMERIZATION OF 2-PHENYLTHIOPHENE | Phenylthiophene (P2PT) has been electrochemically polymerized in pure boron trifluoride diethyl ether (BFEE) solutions or in a com p osite electrolyte of BFEE and trifluoroacetic acid (TFA).The addition of a certa in amount of TFA into BFEE lowered the oxidation potential of the monomer,accelerat ed the polymerization and also increased the current efficiency of the electrosy nthesis.The morphology and electrochemical behavior of as\|grown P2PT films were studied by scanning electron microscopy and cyclic voltammetry.Poly(2\|phenylth iophene) in dedoped state is soluble in usual organic solvents such as tetrahydr ofuran and chloroform,etc.Its structure has been examined by infrared,Raman and UV\|visible spectroscopies.The molecular weight of the polymer was measured to b e about 800 Da.Fluorescent spectral studies indicate the polymer is a blue\|gree n light emitter. |
[The effect of myelopid on the ultrastructural changes in the rat myocardium induced by an endotoxin]. | Ultrastructural changes in the myocardial atria and ventricles have been studied in experiments on rats in the intermediate period of the endotoxin shock, on the stage of late endotoxemia and its correction with myelopid. It was established that 5 hours after endotoxin injection contractile disturbances and intracellular myocytolysis take place and growth of secretory activity is observed in atrial cardiomyocytes. Simultaneously vascular permeability increases. Only the endocrine heart function is restored 3 days later, while dystrophic changes and glycogen depletion are maintained. The myelopid administration beginning from the intermediate period of the endotoxin shock and then once during 3 days, removes most of ultrastructural damages or attenuates their expression. |
Synthesis and some properties of 4-oxo-3,4-dihydro- and 2,4-dioxo-1,2,3,4-tetrahydropyrimido[5,4-b]indoles | The condensation of N-(2-ethoxycarbonylindol-3-yl)-N′,N′-dialkylamidines with ammonia, primary amines, and hydrazines has given a series of 4-oxopyrimido[5,4-b] indoles which have been converted into the 4-chloro and then into the 4-methoxy, 4-dialkylamino, and 4-mercapto derivatives. 2,4-Dioxopyrimido[5,4-b]indoles have been synthesized by the successive action of chloroformic ester and then methylamine, hydrazine, or ethylhydrazine on 3-amino-2-ethoxycarbonylindoles differing by their substituents in position 5. |
Fountain-pressure imaging of the dissipation in quantum-Hall experiments | Abstract The spatial distribution of heat dissipation in quantum Hall-effect devices was imaged utilizing the fountain pressure effect of superfluid helium. This was done by observing visually the local thickness of a helium film covering the sample. We found that dissipation takes place only in two opposite corners at the current contacts. Unexpected asymmetries between the two corners were observed if the Hall currents exceeded a threshold value. In a Corbino geometry the breakdown of the quantum Hall effect was imaged and spiral-shaped filaments were observed. |
And now for something completely creepy | Let's try posting a photo. This is a sample shot from my new Sony A7S. #bobblehead #selfie #photo |
A model study of QCD phase transition | A new approach to the calculation of the vacuum pressure difference between the Nambu phase and the Wigner phase is proposed, which accommodates both temperature and baryon chemical potential appropriately. Based on this treatment, a continuum model study of a QCD phase structure is conducted within the framework of the Dyson–Schwinger equation and a phase diagram in the T–μ plane is consequently obtained. A comparison between our method and an earlier one on the calculation of vacuum pressure difference is given. |
Nucleation and growth in surface melted alloys | Rapid surface melting and solidification data is presented and a microscopic simulation is described. Examples are Cr-Ta, FeNiPB metallic glass, Ta-Ir, Cu-Z. 9 figs., 9 refs. |
Application of cytology in diagnosing benign changes and breast cancers. | On the basis of cytology performed in a group of 386 women and 14 men admitted to the Breast Disease Outpatient Unit in the area of Sucha Beskidzka, a structure of changes in breast benign and malignant neoplasms was defined. The diagnostic value of cytology based on FNB and a secretion from mammary glands were evaluated. Expression of p53 and nm23 protein expression in the cells of the most common cancers was studied for prognostic values. The study demonstrated 81% of benign changes and 19% of cancers. With respect to cancers, cytology confirmed its usefulness since the findings were compatible in 94.44% with histopathologic results. Moreover, application of proliferation markers (p53 and nm23) allowed to evaluate the degree of malignancy and prognosis for further neoplastic process. |
Behemoth telescopes build toward first light | Among the science goals for three 30-m-scale telescopes is to seek signs of extraterrestrial life. But the big projects must first overcome big hurdles. |
Use of titanium hydroxide in integrated circuit fabrication | (57) Abstract: Method for forming a titanium silicide layer on a silicon region of a semiconductor device having a unique oxides, TiH This method, two layers of titanium nitride / titanium silicide on silicon, and to produce a two-layer titanium nitride / titanium on silicon dioxide. |
A new species of Derops Sharp from China (Coleoptera, Staphylinidae, Tachyporinae) | K e y w o r d s : Coleoptera, Staphylinidae, Tachyporinae, Derops, China, Shaanxi, Sichuan, new species. |
The existing Problems and Countermeasures for the Work of Electronic Accounting in the Enterprises In Tianshui | The key problem existing in electronic accounting of Tianshui enterprises are: First, there are only a few of enterprises opening electronic accounting; second, the work is still at its germinal stage. The restraints that have caused this problem come from both the internal enterprises and the exterior enterprises. Under such circumstances, the enterprise managers , the government, the working talents section software developers should take their own responsibility to push the development of the electronic accounting. |
The static and Dynamic NMR spectra of 4,4′-bis(N-isopropyl-N-nitrosoamino)biphenyl, a four-site exchange problem | The 1H and 13C NMR spectra of 4,4′-bis(N-isopropyl-N-nitrosoamino)biphenyl at 22°C were consistent with the presence of three isomers due to slow rotation about the N—N bonds of the two N-nitroso groups. The structures of the three isomers were assigned by means of their symmetries and from the known effects of the two orientations of the N-nitroso group on 1H and 13C NMR chemical shifts. Each conversion of an N-nitroso group from anti to syn to an aryl group was associated with the same free energy difference (0.26 kcal mol−1) after symmetry corrections were made. The changes in the 13C NMR spectra recorded from 95 to 150°C were simulated using a program for classical four-site exchange. The potential barrier to rotation was calculated to be 20.76±0.06 kcal mol−1 at 400 K. |
Multi Area Economic Dispatch using Secant Method | In this paper, Secant method is proposed to solve multi area economic dispatch (MAED) problem. Generator limits of all generators in each area are calculated at given area power demands plus export (or import) using secant method and the generator limits of all generators are modified as modified generator limits. Central economic dispatch (CED) problem is used to determine the output powers of all generators. Here, Secant method is applied to solve the CED problem. The proposed approach has been tested on two-area (two generators in each area) system and four-area (four generators in each area) system. It is observed from various cases that the proposed approach provides optimally best solution in terms of cost with tie line loss with less computational burden. |
フレキシブルロボットアームの制御 : 第4報, 3自由度系に関する制御実験 | The objective of this paper is to verify the effectiveness of the control method and sensitivity analysis by experiments which were described in the previous paper. Here, a two-link flexible robotic arm with three degrees of freedom is employed in experimental equipment, and force sensors and encoders are employed as sensors. In particular the force sensor is used to suppress the vibrations of the flexible arm. First, it is shown that the residual vibrations in positioning control can be suppressed by the state feedback control method with optimal gains. Second, it is shown that the closed-loop system by using the optimal control theory becomes unstable when parameter's uncertainties such as the second arm's length or payload weight are included. Thus the allowance of parameter variations given by this paper is verified by both simulated and experimental studies. |