gebhart/patrepeval huggingface dataset:
Low threshold room-temperature lasing of CdS nanowires (2012)

The synthesis of CdS nanostructures (bands, wires, irregular structures) was investigated by systematic variation of temperature and gas pressure, to deduce a comprehensive growth phase diagram. The high quality nanowires were further investigated and show stoichiometric composition of CdS as well as a single-crystalline lattice without any evidence of extended defects. The luminescence of individual nanowires at low excitation shows a strong near band edge emission at 2.41 eV indicating a low point defect concentration. Sharp peaks evolve at higher laser power and finally dominate the luminescence spectrum. The power dependence of the spectrum clearly shows all the characteristics of amplified stimulated emission and lasing action in the nanowire cavity. A low threshold was determined as 10 kW cm(-2) for lasing at room temperature with a slope efficiency of 5-10% and a Q factor of up to 1200. The length and diameter relations necessary for lasing of individual nanowires was investigated.
La preuve par les chiffres (evidence based) : de quoi s'agit-il ? (2012)

La preuve par les chiffres opère dans de nombreux champs disciplinaires. Elle a pour objet la confrontation entre une question de nature théorique et des mesures chiffrées. Nous distinguons trois étapes dans le processus de preuve : une mise en forme de la question, l’usage d’un test statistique et l’argumentation. Nous explicitons le rôle de la rareté dans la procédure de test et aussi ce qui relève d’un consensus social. Nous nous penchons sur la terminologie, notamment celle de « la vraie valeur d’une probabilité (ou d’un paramètre) », et sur la rhétorique employée au 20e siècle qui, en dépit de sa commodité pédagogique, conduisent à une perte de sens de la notion de preuve par les chiffres. D’où une proposition de changement de rhétorique, pour l’adapter à notre époque où la notion de modèle est explicitement présente dans la plupart des démarches scientifiques.
Photochemical C-P bond cleavage of some (substituted benzyl)phosphonic acid derivatives. (1987)

数種の置換ベンジルポスホン酸を合成して,その光化学反応の挙動について検討した。ニトロ-,ベンゾイル-およびフェニルスルポニルベンジルポスホン酸はアル力リ水性溶液として,パイレックスガラス容器で,高圧水銀灯を用いて光照射すると容易にC-P結合は切れ,対応する置換トルエン誘導体とオルトリン酸を効率よく生じる。この反応は光による分子内電子移動で始まりラジカルアニオンを経て置換ベンジルアニオンとメタリン酸モノマー陰イオンを生じるものと考えられる。ここで発生するメタリン酸モノマー陰イオンを利用してリン酸エステルの合成を行なった。すなわちp-(ベンゾイルベンジル)ホスホン酸を用い,無水アルコール中,1,8-ジアザビシクロ[5.4.0]ウンデク-7-エンを塩基として用い,光照射することによって高収率でリン酸エステルを得ることができた。
Yield Stresses in Concentrated Dispersions of Closely Packed, Deformable Gel Particles (1983)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation L. L. Navickis, E. B. Bagley; Yield Stresses in Concentrated Dispersions of Closely Packed, Deformable Gel Particles. J. Rheol. 1 December 1983; 27 (6): 519–536. https://doi.org/10.1122/1.549717 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentThe Society of RheologyJournal of Rheology Search Advanced Search |Citation Search
Applications of kinetic gas theories and multiparameter correlation for prediction of dilute gas viscosity and thermal conductivity (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTApplications of kinetic gas theories and multiparameter correlation for prediction of dilute gas viscosity and thermal conductivityTing Horng Chung, Lloyd L. Lee, and Kenneth E. StarlingCite this: Ind. Eng. Chem. Fundamen. 1984, 23, 1, 8–13Publication Date (Print):February 1, 1984Publication History Published online1 May 2002Published inissue 1 February 1984https://pubs.acs.org/doi/10.1021/i100013a002https://doi.org/10.1021/i100013a002research-articleACS PublicationsRequest reuse permissionsArticle Views1949Altmetric-Citations272LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
Molecular Cloning of Globotriaosylceramide/CD77 Synthase, a Glycosyltransferase That Initiates the Synthesis of Globo Series Glycosphingolipids (2000)

The expression cloning of a cDNA for globotriaosylceramide (Gb3)/CD77 synthase (alpha1,4-galactosyltransferase) was achieved using an anti-Gb3 antibody and mouse L cells as a recipient cell line for the transfection. The isolated cDNA clone designated pVTR1 predicted a type II membrane protein with 19 amino acids of cytoplasmic domain, 26 amino acids of transmembrane region, and a catalytic domain with 308 amino acids. Introduction of the cDNA clone into L cells resulted in the neosynthesis of Gb3/CD77, and the extracts of the transfectant cells showed alpha1, 4-galactosyltransferase activity only on lactosylceramide and galactosylceramide. In Northern blotting, a 2.3-kilobase mRNA was strongly expressed in heart, kidney, spleen, and placenta and weakly in colon, small intestine, and brain. Transfection of the cDNA into L cells resulted in the constitution of sensitivity to the apoptosis with Shiga-like toxins (verotoxins). Since Gb3/CD77 synthase initiates the synthesis of globo series glycolipids, the isolation of this cDNA will make possible further investigations into the function of its important series of glycolipids.
Hypoglycaemic effect of aqueous extract of the leaves of Trigonella foenum-graecum in healthy volunteers. (2000)

The safety and efficacy of Trigonella foenum-graecum extract was investigated using 20 male volunteers aged 20-30 years. They were randomly treated with either 40 mg/kg aqueous extract powder in 10 mL distilled water or 10 mL distilled water in which coffee simulated the extract. The extract significantly lowered blood glucose level by 13.4% 4 hours after ingestion. A significant change of 14.1% was observed in potassium levels. No significant alteration in serum cholesterol, total serum protein and blood urea occurred. Approximately one-third experienced feelings of hunger, frequency of micturition or dizziness during the 24 hours after ingestion. The aqueous extract effectively reduced blood glucose in normal subjects safely. Its hypokalaemic effect merits further investigation.
Deposition of Tantalum, Tantalum Oxide, and Tantalum Nitride with Controlled Electrical Characteristics (1966)

Results are presented which indicate that the effects of sputtering voltage and current on the resistivity of films sputtered from pure tantalum appear to be traceable to the pressures and growth rates associated with each sputtering condition. From these data it can be deduced that the observed resistance variations are largely accountable in terms of film impurity content. Tantalum sputtered reactively in the presence of oxygen produces films which are shown to exhibit a sharp transition from relatively low to very high resistivities as the oxygen concentration in the working gas is raised. Changes of greater than 12 orders of magnitude are observed. It is demonstrated that sputtering voltages and anode potentials effect a significant change in the transition point. Similarly well-defined results are presented on films reactively sputtered in the presence of N2. The results tend to indicate that the anode potential retards (or enhances) electrostatically both the reactive and nonreactive interaction of tantalum with oxygen or nitrogen at the film surface. Results on the effect of substrate temperature on growth rate demonstrate that in reactive sputtering, the reaction occurs at the substrate surface.
Experiments on the Dynamic Response of a Flexible Strip to Moving Loads (1977)

Experimental findings are reported on the dynamic response of a flexible strip to moving loads traveling at an oblique angle to its edges. The strip is wrapped under tension around a pair of supporting pressurized cylinder halves. The moving loads are applied to the flexible strip at the gap between the two cylinder halves. A capacitance displacement transducer measures the dynamic response of the strip, which is shown in isometric perspective for various boundary conditions. It is shown that waves on the strip created by the moving loads can be eliminated by providing a hydrodynamic air film support to the flexible strip in the vicinity of the moving loads. Experiments demonstrate that response to the loads along the edges of the strip differs from that near its center, which is to be expected because of the reflection of flexural waves from the boundaries of the strip.
An Investigation of Insect and Rodent Contamination of Wheat and Wheat Flour (1952)

Journal Article An Investigation of Insect and Rodent Contamination of Wheat and Wheat Flour Get access Kenton L Harris, Kenton L Harris Food and Drug Administration, Federal Security Agency, Washington, D. C Search for other works by this author on: Oxford Academic Google Scholar J F Nicholson, J F Nicholson Food and Drug Administration, Federal Security Agency, Washington, D. C Search for other works by this author on: Oxford Academic Google Scholar Lila K Randolph, Lila K Randolph Food and Drug Administration, Federal Security Agency, Washington, D. C Search for other works by this author on: Oxford Academic Google Scholar J L Trawick J L Trawick Food and Drug Administration, Federal Security Agency, Washington, D. C Search for other works by this author on: Oxford Academic Google Scholar Journal of Association of Official Agricultural Chemists, Volume 35, Issue 1, 1 February 1952, Pages 115–158, https://doi.org/10.1093/jaoac/35.1.115 Published: 08 February 2020
Computation offloading to save energy on handheld devices (2001)

We consider handheld computing devices which are connected to a server (or a powerful desktop machine) via a wireless LAN. On such devices, it is often possible to save the energy on the handheld by offloading its computation to the server. In this work, based on profiling information on computation time and data sharing at the level of procedure calls, we construct a cost graph for a given application program. We then apply a partition scheme to statically divide the program into server tasks and client tasks such that the energy consumed by the program is minimized. Experiments are performed on a suite of multimedia benchmarks. Results show considerable energy saving for several programs through offloading.
Single-track asynchronous pipeline templates using 1-of-N encoding (2003)

This paper presents a new fast and templatized family of fine-grain asynchronous pipeline stages based on the single-track protocol. No explicit control wires are required outside of the datapath and the data is 1-of-N encoded. With a forward latency of 2 transitions and a cycle time of 6 for most configurations, the new family can run at 1.6 GHz using MOSIS TSMC 0.25 /spl mu/m process. This is significantly faster than all known quasi-delay-insensitive templates and has less timing assumptions than the recently proposed ultra-high-speed GasP bundled-data circuits.
Biased target deposition (2000)

The biased target deposition apparatus described herein uses a low energy ion source. The ions are generated at energies for which the sputter yield is negligible for typical construction materials, so that there is no need for expensive optics to focus the ions on the target. The bias of the target provides the energy for sputtering the target material, in addition to restricting the sputtering to the target. Using the biased target technique, copper films were deposited with an average resistivity of about 2.5 μΩ cm at a thickness of 1000 Å. This apparatus is well suited to the deposition of very thin (⩽1000 Å) high quality films, such as used in recent magnetoresistive devices. It is also well suited for use in compact and reliable multitarget systems to deposit such films.
High Frequency Compensation for Compressed Digital Audio using Sampled-Data Control (2007)

Compressed digital audio technologies such as MD and MP3, cut down high frequency component data which have less influence on hearing. However, with an increase of compression rate, the increase in sound unclearness is observed. Therefore, a technology to realize high-quality sound is required to respond to the increasing demands for high-quality sound reproduction. In order to meet this challenge, a method is considered, in which the removed high frequency components are reproduced. Focusing attention on the sampled-data control theory to establish an optimum signal processing system using the original sound (CD sound) frequency characteristics, we have applied this theory to high frequency compensation of compressed digital audio signals in the form of “interpolating data points between discrete data to improve signal quality.” As a result, high frequency components of compressed digital audio signals are compensated so that they are close to the frequency spectrum of CDs, which enables sound quality improvement with a remarkably small amount of calculation load. This technology has been implemented on semiconductors which have been commercialized in LSIs for MD players.
Effect of the Spacer Length on the Solid Phase Transitions of Dissymmetric Gemini Surfactants (2003)

Three dissymmetric gemini surfactants (abbreviated as 12−s−14) in which n-dodecyldimethylammonium bromide and n-tetradecyldimethylammonium bromide are connected at the polar headgroups by a flexible −(CH2)s− spacer (s = 2, 6, or 10) have been synthesized. The influence of the spacer length on the structural and thermal properties of 12−s−14 surfactants was investigated by means of IR and NMR spectral analysis, X-ray diffraction, thermogravimetry, differential scanning calorimetry, and polarizing optical microscopy. Geminis with s = 2 or 10 form monolayers in which two alkyl chains are in the trans configuration, while the gemini with s = 6 forms interdigitated bilayers with two alkyl chains in the cis configuration with respect to the spacer. All compounds exhibited a complex polymorphism and thermotropic mesomorphism from the stable crystalline form to the liquid crystalline phases of smectic type. The number of thermal phase transitions and the sequence of phases are markedly affected by the spacer length; that is, they depend on the configuration of the two alkyl chains with respect to the spacer.
Effect of support material on ultrafiltration membrane performance (2006)

Abstract Supported ultrafiltration (UF) membranes based on polyacrylonitrile were prepared by phase inversion method using nonwoven polyester fabric as support with different origin. The membrane preparation parameters, including dope solution composition and casting conditions, were kept same while changing the support fabric. Various analyses performed, viz. water flux, protein rejection, porosity, and membrane compaction indicated that the support used for UF membrane preparation affects the membrane properties to a great extent, and a right support need to be chosen for a preparation of membrane with desired properties. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99:3389–3395, 2006
Growth Conditions and Morphology of GaN Single Crystals Fabricated by the Na Flux Method. (2001)

GaN single crystals were synthesized by using the Na-Ga melt at 700-850°C and 1-5 MPa of N2 for 200h. The formation of GaN was not observed at 800°C under 1 MPa of N2, and at 850°C and 1.5MPa of N2. GaN single crystals were obtained lower temperatures and/or the higher N2 pressures. The morphology of the crystals tended to change from prismatic to platelet by decreasing the growth temperature and/or increasing N2 pressure. Colorless transparent prismatic single crystals with a size of about 1.0±0.5±0.5mm3 were obtained by adopting a three-step heating process in which the temperature was increased from 750°C at 0.5°C/h to 800°C under 3MPa of N2.
CYBER SECURITY FOR AIRPORTS (2013)

In today's information age, government organizations and business enterprises are heavily relying on interconnected computer systems to manage a variety of public services including energy, transportation, water, etc. While this increased connectivity has many operational advantages benefitting the public, they have also become vulnerable to cyber attacks such as Corporate Security Breaches, Spear Phishing, and Social Media Fraud. The aviation sector is one the critical infrastructure systems that is not only vulnerable to physical threats, but also cyber threats, especially with the increased use of Bring Your Own Device (BYOD) at airports. It has been recognized that there is currently no cyber security standards established for airports in the United States as the existing standards have mainly focused on aircraft Control System (CS). This paper summarizes the need, background, ongoing developments and research efforts with respect to the establishment of cyber-security standards and best practices at U.S. airports with special emphasis on cyber security education and literacy.
Comparison of two multisheet transmission windows for millimeter-wave radiometers (1988)

The design and performance of a triple-sheet Mylar window and a Teflon-and-foam window are studied theoretically and experimentally to determine which window produces the smaller brightness temperature variations and, therefore, leads to better accuracy of radiometers operating at frequencies of 20-90 GHz. Theoretical brightness temperatures due to emission and reflection by the windows are calculated and compared; experimental measurements obtained by using the clear atmosphere as a radiation source are also compared. Both theory and experiment indicate that the Teflon-and-foam window produces smaller brightness temperature variations at these operating frequencies. Effects of the windows on integrated water vapor and liquid measurements are also examined; errors are significant for the triple-sheet Mylar window but are negligible for the Teflon-and-foam window. It is observed that use of the Teflon-and-foam design results in acceptably small errors in radiometric measurements of water vapor and cloud liquid.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Perfluorohexane As a Novel Reaction Medium For Bromination Reactions (1995)

Abstract Perfluorohexane is shown to be a good alternative to carbon tetrachloride as a non-toxic, non-ozone-depleting, inert reaction medium for bromination reactions. Yields of brominated products were nearly quantitative and the reaction work-up was easier.
The measurement of the permittivity and power factor of dielectrics at frequencies from 10<sup>4</sup>to 10<sup>8</sup>cycles per second (1936)

The paper describes apparatus devised for the measurement of the permittivity and power factor of insulating materials over a wide range of radio frequencies. The range covered is from 10 kc to 100 Mc, and the same calibration of the apparatus holds good over the entire range without the use of any troublesome corrections. The only changes necessary in order to proceed from one part of the range to another are changes of tuning coils.The method is that of capacitance-variation in a tuned circuit, with a thermionic voltmeter as a detector of resonance. The adjustments are made by means of two micrometer condensers, one being a plate condenser in which the sample is inserted, and the other a cylindrical condenser of linear law and of very small range, which serves to measure the sharpness of resonance. Both permittivity and power factor may be obtained as the ratio of capacitance readings: frequency is not involved in their calculation, and it is this property which gives the apparatus its very large frequency-range.The errors due to residual inductance and resistance at the highest frequencies are discussed, and it is shown that these errors, together with those associated with imperfect contact of electrodes, may be eliminated, partly by very careful attention to details in the construction of the apparatus, and partly by the procedure followed in making the measurements.The apparatus is also applicable to measurements on resistors over the same range of frequencies.
Hierarchical image analysis using irregular tessellations (1991)

A novel multiresolution image analysis technique based on hierarchies of irregular tessellations generated in parallel by independent stochastic processes is presented. Like traditional image pyramids these hierarchies are constructed in a number of steps on the order of log(image-size) steps. However, the structure of a hierarchy is adapted to the image content and artifacts of rigid resolution reduction are avoided. Two applications of these techniques are presented: connected component analysis of labeled images and segmentation of gray level images. In labeled images, every connected component is reduced to a separate root, with the adjacency relations among the components also extracted. In gray level images the output is a segmentation of the image into a small number of classes as well as the adjacency graph of the classes.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Manual Dexterity as a Correlate of Dependency in the Elderly (1989)

Physical and mental correlates of dependent living were determined in 128 Catholic sisters (nuns), aged 75 to 94 years, who had similar social support systems and lifestyles. The primary a priori hypothesis was that poor manual dexterity would correlate strongly with living in the nursing home. Stepwise discriminant analysis indicated that manual dexterity explained 51% of the variance in the sisters' residential living site (ie, nursing home, retirement home, or living in community). The discriminant analysis equation using manual dexterity predicted living site correctly for 63% of the sisters in the nursing home with a specificity of 99%, a positive predictive value of 96% and negative predictive value of 84%. The addition of age and mental status to the equation improved the prediction only slightly.
Emerging standards for wireless mesh technology (2006)

Wireless mesh networking is a promising technology for numerous applications which appeals especially to those applications that cannot be directly supported by other wireless technologies. The commercial success of Wi-Fi and the advances in many wireless technologies have in part stimulated the development of wireless mesh networks. The persistent driving force, however, comes from the envisioned advantages of wireless mesh techniques themselves, including extended coverage, robustness, self-configuration, easy maintenance, and low cost. This article presents an overview of this emerging technology, focusing on the technical merits and related standards activities of IEEE and ZigBee that are actively applying the concept of multi-hop mesh techniques in the field of wireless networking technologies, ranging from personal area networks (PANs) to metropolitan area networks (MANs).