gebhart/patrepeval huggingface dataset:
Reaction of hydrogen with hydroxyl-free vitreous silica (1980)

The reacton of hydrogen with hydroxyl-free vitreous silica has been measured for temperatures between 500 and 850 °C, pressures between 0.132 and 5.78 atm, and sample thicknesses between 0.057 and 1.06 cm. The results can be explained by a simple model often used to explain tarnishing reactions. This model assumes that the reaction rate is very fast compared to diffusion, and that a fixed concentration of trapping sites exists in the specimen.
Active and Passive Cable Elements in Deployable/Retractable Masts (1993)

This paper describes a new type of deployable masts for use in Space, based on the following elements. A deployable backbone, consisting of rods and/or plates, which can be folded or deployed freely. One or more active cable, following specially chosen routes along the mast, and running over small pulleys. The overall length of an active cable can vary between two extremes: a maximum length when the mast is fully folded; a minimum length when the mast is fully deployed. A set of passive cables joining pairs of points on the backbone. The passive cables are all slack when the backbone is partially folded and become taut when it is fully extended. A final, essential ingredient is structural prestress in the deployed state, so that all of the cables are in a state of pretension and therefore are able to carry any tensile or compressive force changes induced by external loads. An additional effect of this state of prestress is to remove backlash at the joints. Three deployable masts based on this approach are presented in the paper.
Immunogenic protein MPB57 from <i>Mycobacterium bovis</i> BCG: Molecular cloning, nucleotide sequence and expression (1988)

Using a single-probe method, we have cloned the gene for an immunogenic MPB57 protein of Mycobacterium bovis BCG. The nucleotide sequence includes an ORF of 300 base pairs encoding a protein of 99 amino acids with an Mr of 10,818. This cloned gene was expressed in an Escherichia coli expression vector to give a mature protein which reacted with a polyclonal antibody raised against MPB57.
N-Methyl-1,2,3,4,4a,9a-hexahydrocarbazoles by Catalytic Hydrogenation (1963)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTN-Methyl-1,2,3,4,4a,9a-hexahydrocarbazoles by Catalytic HydrogenationKarl H. Bloss and Charles E. TimberlakeCite this: J. Org. Chem. 1963, 28, 1, 267–269Publication Date (Print):January 1, 1963Publication History Published online1 May 2002Published inissue 1 January 1963https://pubs.acs.org/doi/10.1021/jo01036a537https://doi.org/10.1021/jo01036a537research-articleACS PublicationsRequest reuse permissionsArticle Views66Altmetric-Citations1LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Channeled substrate buried heterostructure GaAs- (GaAl)As injection lasers (1976)

A technique for fabricating stripe geometry GaAs/(GaAl)As injection lasers with optical and carrier confinement not only in the plane perpendicular but also parallel to the p-n junction is reported. This independently developed channeled substrate technique is a simple extension of conventional liquid phase epitaxy requiring no regrowth and relies on the strong tendency of epitaxial layers to smooth out as they grow. The active regions of the preliminary 10- and 20-μm-wide stripe lasers that have been fabricated to date are parabolic in cross section, tapering gradually to zero at the edges and completely embedded in GaAlAs. Unlike the ’’etched buried heterostructure lasers’’ recently reported by Burnham and Scifres, the n- (GaAl)As layer is continuous, thus preventing the direct injection of carriers into the substrate. Room-temperature pulsed threshold currents are in the range 150–350 mA with efficiencies up to 30%. This paper describes the LPE growth techniques that we used to produce the two preliminary wafers. A first-order theory is presented which describes the transverse mode structure of the unusually shaped waveguide which forms the active region of the lasers. The observed mode structure agrees closely with that calculated. A mode selection effect has been observed which favors low-order transverse mode operation close to threshold in the multimode waveguides which we produced. Finally, we report the cw operation of these lasers and discuss the more significant aspects of their operation.
The effect of tetronasin and monensin on fermentation, microbial numbers and the development of ionophore‐resistant bacteria in the rumen (1993)

The Gram-negative rumen bacteria Fibrobacter succinogenes S85, Prevotella ruminicola M384 and Veillonella parvula L59 were grown in media containing successively increasing concentrations of the ionophores, monensin and tetronasin. All three species became more resistant to the ionophore with which they were grown. Increased resistance to one ionophore caused increased resistance to the other, and cross-resistance to another ionophore--lasalocid--and an antibiotic--avoparcin. Recovery of tetronasin-resistant bacteria from the rumen of monensin-fed sheep increased and vice versa, indicating that similar cross-resistance occurred in vivo.
Effects of Exogenous Jasmonic Acid on Concentrations of Direct-Defense Chemicals and Expression of Related Genes in Bt （Bacillus thuringiensis） Corn （Zea mays） (2007)

Bt 玉米是顶之一三大规模商品化的转基因的庄稼在全世界。为害虫控制的互补持久的途径，把庄稼的内长的防卫与介绍外国基因相结合，为害虫抵抗管理和昆虫抵抗的转基因的庄稼的下一代正在答应其他的策略，是逐渐地清楚的。在现在的学习，我们由化学分析， ELISA，和 RT-PCR 在 Bt 玉米栽培变种 34B24 和 non-Bt 栽培变种 34B23 的叶子在直接防卫的化学内容， Bt 蛋白质集中，和相关基因表示上测试了外长的 jasmonic 酸(JA ) 的可诱导的效果。结果证明在对待的叶(第一片叶) 的哈鱼， PR-2， MPI，和 PR-1 基因的表示被外长的 JA 在 34B24 和 34B23 两个都支持。作为与控制相比，在对待的叶的 DIMBOA 的集中被 63 和 18% 显著地分别地为 34B24 和 34B23 增加。全部的酚酸被 24 和 12% 也为 34B24 和 34B23 增加。在对待的叶的 34B24 的 Bt 蛋白质内容被 13% 增加，但是在第二片叶在 27% 显著地减少了。34B24 的导致的反应以一个全身的方法并且比 34B23 的强壮得多。那些调查结果显示在 Bt 之间有基因和内部导致的化学防卫系统在 Bt 玉米由外部地应用的 JA 触发了的一个 synergistic 相互作用。
Piezoelectric torsional actuator (1994)

Piezoelectric torsional actuators have been developed from single ceramic cylindrical bodies using PZT based high d constant piezoelectric ceramics. The actuator geometry is able to produce rotational motion directly by DC voltage control without conventional complex conversion from XY direction motions. The key feature of this actuator is the interdigital electrode on the outer surface of the cylinder at an angle of 45° from the length axis of the cylinder, and the design of this electrode is critical for adjusting torsional angle and driving voltage. When the cylinder wall thickness and the ratio between electrode width and pitch are kept constant, the rotational angle is approximately proportional to the electric field, i.e. the narrower electrode gap needs smaller driving voltage in order to obtain a certain rotational angle. Among the three different diameter samples tested, actual rotational displacements are the same under the same conditions. Therefore, the rotational angle is reversibly proportional to the diameter of the piezoelectric cylinder.
Comparison of the nutritional properties and biological activities of kiwifruit (<i>Actinidia</i>) and their different forms of products: towards making kiwifruit more nutritious and functional (2019)

Correction for 'Comparison of the nutritional properties and biological activities of kiwifruit (Actinidia) and their different forms of products: towards making kiwifruit more nutritious and functional' by Tingting Ma et al., Food Funct., 2019, 10, 1317-1329.
Effects of phosphoric acid and tannic acid on dentine collagen (1991)

We examined the effects of phosphoric acid, the most common enamel etchant in composite resin therapy, on dentine collagen. Dentine collagen pretreated with 7M phosphoric acid was shown to be more susceptible to trypsin digestion than untreated collagen. This susceptibility increased with increasing duration of exposure to the acid. The results indicate that phosphoric acid induces a conformational change in dentine collagen (denaturation or perturbation) similar to that observed with 0.39 M HCl, which has a similar pH value (0.65). However, phosphoric acid-pretreated dentine collagen, when treated with tannic acid for 2 h, became as resistant to tryptic digestion as intact dentine collagen. The present results suggest that tannic acid may work as a dentine conditioner in composite resin therapy, in view of the fact that phosphoric acid etchant is applied, either deliberately or inadvertently, to dentine, and would thus induce denaturation or perturbation of collagen.
Mathematical Problems of Nonlinear Dynamics: A Tutorial (1997)

We review the theory of nonlinear systems, especially that of strange attractors, and give its perspectives. Of a special attention are the recent results concerning hyperbolic attractors and features of high-dimensional systems in the Newhouse regions. We present an example of a "wild" strange attractor of the topological dimension three.
A High-Power-Density Power Factor Correction Front End Based on Seven-Level Flying Capacitor Multilevel Converter (2018)

This paper presents a power factor correction (PFC) front end based on a seven-level flying capacitor multilevel (FCML) boost converter. Compared to the conventional two-level boost converter, the proposed seven-level FCML converter features the use of low-voltage-rated transistors, reduced voltage stress, and high effective switching frequency on the filter inductor. These characteristics of the FCML converter lead to drastic reduction in the filter inductor size while maintaining high efficiency and, therefore, significantly improve the power density of the PFC front end compared to conventional solutions. On the other hand, the small inductance imposes challenges on the PFC control. The dynamics of the seven-level FCML converter has been analyzed, and a feedforward control has been implemented to overcome these challenges. A hardware prototype is designed for universal ac input (90 to 265 Vac), 400-V dc output, and 1.5-kW power rating. Compared to existing solutions, the hardware prototype demonstrates improved efficiency and power density while maintaining high power factor and low THD. A power density of 219 W/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> (490 W/in <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> for the power stage) has been achieved, and a peak efficiency of 99.07% has been experimentally verified.
A 12-μW to 1.1-mW AIM Piezoelectric Energy Harvester for Time-Varying Vibrations With 450-nA $I_{\bm Q}$ (2014)

Continuing advancements in low power VLSI systems have enabled the use of self-powered wireless sensor nodes (WSNs) for many industrial applications. To alleviate WSN battery maintenance requirements, piezoelectric devices are implemented to harvest vibration energy. However, significant challenges remain unresolved with regard to harvesting from time-varying vibrations in environments where harvestable energy is unpredictable. This paper presents a new integrated piezoelectric energy harvesting system. An adaptive impedance matching maximum power point tracking technique is proposed to improve harvesting efficiency. An adaptive on-time dc-dc controller with pulse skipping modulation is also employed. To retain reasonable efficiency in such low power applications, the controller is designed with ultralow power analog circuits and zero bias current dynamic circuits, with a total quiescent current of only 450 nA. The design is fabricated and verified on a 0.25-μm CMOS process. It is capable of harvesting time-varying piezoelectric energy ranging of 12 μW to 1.1 mW. In comparison with quasi-resistive impedance matching, a harvesting improvement of more than two times is achieved. Thanks to the low power design effort, it achieves greater than 70% efficiency from 80 μW to 1.1 mW.
A comparison of routing strategies for vehicular ad-hoc networks (2002)

In this paper we investigate the use of ad-hoc routing algorithms for the exchange of data between vehicles. There are two main aspects that are of interest in this context: the specific characteristics of ad-hoc networks formed by vehicles and the applicability of existing ad-hoc routing schemes to networks that display these characteristics. In order to address both aspects we generate realistic vehicular movement patterns of highway traffic scenarios using a well validated traffic simulation tool. Based on these patterns we show that the characteristics of vehicular ad-hoc networks are quite different from the frequently used random waypoint model. We then proceed to evaluate the performance of a reactive ad-hoc routing protocol (DSR) and of a position-based approach (greedy forwarding as done in GPSR) in combination with a simple reactive location service. Our analysis suggests that for vehicular networks where communication spans more than 2 or 3 hops position-based ad-hoc routing has significant advantages over reactive non-position-based approaches both in the number of successfully delivered packets and in routing overhead.
Sitting down and standing up motion of Sauro-Emu with manipulator motions (2002)

The purpose of our research is to show the realization of nonstationary motions (sitting down and standing up motion, and manipulator motions, etc.) for a legged robot. We have previously (1994) proposed a design method for nonstationary motions, and we have shown that the resultant control system had a property of a kind of robustness against some modeling error theoretically. In this paper, we report that we developed an experimental apparatus named Sauro-Emu that is able to realize the sitting down and standing up motion with manipulator motions. Through some experiments, we show the effectiveness of our control scheme.
Electron capture radioactive sources for intravascular brachytherapy: a feasibility study (2003)

The feasibility of electron capture (EC) radionuclides as an alternative to the beta and high-energy gamma emitters presently in use for intravascular brachytherapy is investigated. A potential advantage of the low-energy x-ray radiation from EC isotopes may be an enhanced biological effectiveness with respect to the presently applied beta nuclides, but at the same time avoiding the shielding problems induced by the large penetrability of high-energy gamma rays. A survey considering the most important practical aspects such as dose delivery to the vessel walls in reasonable time spans, absorption properties, possible production of sources with the required specific activities and radiation safety reveals 71Ge as the most promising candidate.
Cu<sup>2+</sup>-Responsive Bimodal (Optical/MRI) Contrast Agent for Cellular Imaging (2013)

A water-soluble T1 magnetic resonance imaging contrast agent (1) has been synthesized. The bimodal contrast agent 1 responds to the Cu(2+) ion in living cells by enhancing the MRI modality signal whereas the optical signal gradually drops. This dual modality probe response depends on the cellular free copper ions in RAW 264.7 cells even at the micromolar level.
Chemical Utilization of Southern Pine Waste (1914)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTChemical Utilization of Southern Pine WasteM. C. Whitaker and J. S. BatesCite this: Ind. Eng. Chem. 1914, 6, 4, 289–298Publication Date (Print):April 1, 1914Publication History Published online1 May 2002Published inissue 1 April 1914https://pubs.acs.org/doi/10.1021/ie50064a008https://doi.org/10.1021/ie50064a008research-articleACS PublicationsRequest reuse permissionsArticle Views21Altmetric-Citations1LEARN 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
Strategies for Transforming Mental Health Care Through Data-Based Decision Making (2005)

The President's New Freedom Commission on Mental Health calls for the transformation of the U.S. mental health-care system. The use of information technology is a cornerstone in the preparation for this mission. Achieving transformation, however, means overcoming existing hindrances to high-quality mental health care for all Americans. Strategies in financing, human resources, rapid integration of evidence-based practices, adoption of performance measures, and expanding the use of information technology are crucial to transforming the behavioral health-care system.
Parallel connection of Integrated Gate Commutated Thyristors and diodes (2008)

This paper describes the parallel connection of 4.5kV Integrated Gate Commutated Thyristors (IGCTs) and diodes. The impact of varying device characteristics on the stationary current distribution of parallel connected semi-conductors is investigated. Possible solutions to improve the current sharing at steady state are presented. A thermal stabilization effect of parallel connected IGCTs is discussed. Furthermore, the behaviour of parallel connected devices during switching transients is investigated experimentally in a 1.5kV, 5kA buck converter. Especially the impact of asymmetrical circuit layouts, different turn-on and turn-off delays and junction temperatures are considered. It is shown, that a substantial current derating is necessary to enable a reliable operation of parallel IGCTs and diodes.
Coatings and surface modification by methane plasma polymerization (1990)

Abstract Polymers formed from plasma‐polymerized methane were employed to modify the surface properties of silicone rubber membrane. Polymers were evaluated based on the energy input parameter W / FM , where W is the discharge power, F is the monomer flow rate, and M is the molecular weight of the monomer. Dealing with the characteristics of plasma polymerization and the deposited polymer film, the effect of pumping rate on deposition rate and the coating thickness, surface energy, and gas permeabilities of methane‐plasma‐polymer‐coated silicone rubber membrane were investigated in three plasma regions. Because more reactive species are expelled at high pumping rates, the monomer‐deficient region is reached at lower W / FM in the high pumping rate system than that in the low pumping rate system. The composite parameter W / FM had a strong influence on coating thickness, gas permeability, surface energy, and the polar component of the surface energy but little effect on its dispersion component. Examination of gas permeabilities indicated that coating thickness was another important controlling factor on the properties of plasma polymer.
[An endoapparatus for restoration of hip joint]. (2008)

The possibility of prolonging the anatomic and functional longevity of joints in young patients with coxarthrosis deformans under conditions of long-term unloading using a submersible distraction device is considered. A submersible endoapparatus for restoration of hip joint is described. Its functional capabilities as an unloading device were corroborated by experimental testing. Clinical examples illustrated with X-ray photographs demonstrate the possibility of long-term unloading of the injured joint and postponement of endoprosthesis replacement in young patients by 20-25 years. It is suggested to use the developed method for organ-sparing surgery in young working-age patients.
Uptake and release of bilirubin by skin (1973)

1. Skin epithelium of albino rat, mouse and guinea pig was shown to accumulate bilirubin from a medium containing free or bound bilirubin. 2. The K(m) values for bound bilirubin were 2.22x10(-3), 1.33x10(-3) and 9.5x10(-4)m for rat, mouse and guinea pig respectively and the corresponding K(m) values for free bilirubin were 5.2x10(-4), 4.0x10(-4), 1.8x10(-4)m; the V(max.) values of bound and free bilirubin were unchanged. 3. The uptake showed saturation kinetics. Bound bilirubin was released together with serum proteins. Free bilirubin bound to skin was not released into the medium. 4. Freezing and thawing of skin epithelium did not cause any significant lowering of the uptake of bilirubin but heat-denatured skin epidermis took up only 50% of the bound bilirubin or free bilirubin taken up by control unheated skin epithelium. 5. The uptake of free and bound bilirubin was prevented by HgCl(2) but not by sodium arsenate, NaCN, NaF, cycloheximide, 2,4-dinitrophenol or iodoacetate. 6. Most of the free bilirubin was bound to the lipids or lipoprotein fraction of skin epithelium and could be extracted by solvents. 7. Rat skin showed the highest accumulation and efflux of bilirubin.
Stimulation of Adventitious Rooting in Cuttings of Four Herbaceous Species by Piperazine (1995)

Journal Article Stimulation of Adventitious Rooting in Cuttings of Four Herbaceous Species by Piperazine Get access J.-H. Liu, J.-H. Liu Search for other works by this author on: Oxford Academic PubMed Google Scholar E. C. Yeung, E. C. Yeung Search for other works by this author on: Oxford Academic PubMed Google Scholar I. Mukherjee, I. Mukherjee Search for other works by this author on: Oxford Academic PubMed Google Scholar D. M. Reid D. M. Reid Search for other works by this author on: Oxford Academic PubMed Google Scholar Annals of Botany, Volume 75, Issue 2, February 1995, Pages 119–125, https://doi.org/10.1006/anbo.1995.1002 Published: 01 February 1995
A scalable app for measuring autism risk behaviors in young children: A technical validity and feasibility study (2015)

In spite of recent advances in the genetics and neuroscience of early childhood mental health, behavioral observation is still the gold standard in screening, diagnosis, and outcome assessment. Unfortunately, clinical observation is often subjective, needs significant rater training, does not captur