gebhart/patrepeval huggingface dataset:
Synthesis of 4-acyl-2-(acylamino)-.DELTA.2-1,3,4-thiadiazolines and 4-acyl-2-amino-.DELTA.2-1,3,4-thiadiazolines by acylation of thiosemicarbazones (1980)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of 4-acyl-2-(acylamino)-.DELTA.2-1,3,4-thiadiazolines and 4-acyl-2-amino-.DELTA.2-1,3,4-thiadiazolines by acylation of thiosemicarbazonesSeiju Kubota, Yasufumi Ueda, Kazuichi Fujikane, Kouhei Toyooka, and Masayuki ShibuyaCite this: J. Org. Chem. 1980, 45, 8, 1473–1477Publication Date (Print):April 1, 1980Publication History Published online1 May 2002Published inissue 1 April 1980https://pubs.acs.org/doi/10.1021/jo01296a025https://doi.org/10.1021/jo01296a025research-articleACS PublicationsRequest reuse permissionsArticle Views451Altmetric-Citations50LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
The structures of the branched fatty acids in the wax esters of vernix caseosa (1971)

Abstract By combined gas liquid chromatography‐mass spectrometry a series of monomethyl branched fatty acids was found in the fatty acid moiety of the wax esters of vernix caseosa. The methyl branch occurred on the even C‐atoms of chains ranging from C 11 to C 17 (some 43 compounds in all). Except for the iso acids and possibly some of the anteiso acids, these could be formed by replacement of malonyl CoA with a molecule of methyl malonyl CoA at the point of the branch. Smaller amounts of fatty acids also were found with two methyl branches occurring on the even C‐atoms of chains ranging from C 9 to C 15 .
Metal-Enhanced Multiphoton Absorption Polymerization with Gold Nanowires (2010)

Metal-enhanced multiphoton absorption polymerization (MEMAP) is studied using gold nanowires with a set of three different photoresists. Photoresists that employ radical and cationic polymerization are investigated. In all cases, MEMAP is strongly correlated with multiphoton-absorption-induced luminescence (MAIL) of the nanowires. Wavelength-dependent studies indicate that the dominant mechanism for MEMAP is not field-enhanced two-photon absorption of the photoinitiator, but rather single-photon excitation of the photoinitiator by the broadband MAIL emission.
Boron Units as Pharmacophores - New Applications and Opportunities of Boron Cluster Chemistry (2007)

Carboranes (dicarba- closo -dodecaboranes) are a class of carbon-containing polyhedral boron-cluster compounds showing remarkable hydrophobic character, chemical and thermal stability, and resistance to catabolism in biological environment. These features allow application of boron clusters as new hydrophobic core structure in biologically active molecules that interact hydrophobically with proteins, thus facilitating new drug design. A review with 45 references.
Fabrication of Normally Off AlGaN/GaN MOSFET Using a Self-Terminating Gate Recess Etching Technique (2013)

A self-terminating gate recess etching technique is first proposed to fabricate normally off AlGaN/GaN MOSFET. The gate recess process includes a thermal oxidation of the AlGaN barrier layer for 40 min at 615 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$^{\circ}{\rm C}$</tex> </formula> followed by 45-min etching in potassium hydroxide solution at 70 <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex Notation="TeX">$^{\circ}{\rm C}$</tex></formula> , which is found to be self-terminated at the AlGaN/GaN interface with negligible effect on the underlying GaN layer, manifesting itself easy to control, highly repeatable, and promising for industrialization. The fabricated device based on this technique with atomic layer deposition <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${\rm Al}_{2}{\rm O}_{3}$</tex></formula> as gate insulator exhibits a threshold voltage as high as 3.2 V with a maximum drain current over 200 mA/mm and a 60% increased breakdown voltage than that of the conventional high electron mobility transistors.
Ferroelectric Liquid Crystals (1988)

Abstract The idea either to reveal or to construct a liquid ferroelectric was never abandoned by researchers since the discovery of ferroelectricity in solid crystals at the beginning of this century. In principle, nature does not forbid the existence of ferroelectric liquids. For instance, a centro-symmetric liquid can change its point symmetry from the K h , to C∝v , group with the formation of a uniform ferroelectric phase. A liquid without the inversion center can have a phase transition K → C∝, into the inhomogeneous, helical structure. In both these hypothetical cases the spontaneous polarization, P s , would play the role of the true order parameter. However, such liquid ferroelectric phases (proper ferroelectrics) have not been discovered as yet.
Self-Aligning Bilateral Chirp-Transform System (1980)

A SAW chirp-Fourier-tr ansform system is described which employs the bilateral property of dispersive delay devices to perform 100% duty-cycle Fourier transformtion using only two SAW devices. It is then shown how alignment of the complex Fourier outputs of a high-performance bilateral processor can be maintained with a digital system using a third SAW device, error-correction circui try and active cl osed-1 oop control to correct for errors at the output arising when device characteristics change due to temperature shifts and device aging. Three major adjustments, the timing of the i nput window over which the transform is taken, the timing of the output samples relative to the transform, and the phase used for in-phase (I) and quadrature (Q) demodulation are required. The input window and the output sample timing are aligned by independently controlling the timing of post and premultiplying chirps, r espectively. I and Q phase are adjusted by digitally controlling the phase of the impulse RF source. Adjustments are made under active closed-loop control utilizing algorithms that derive error corrections from special test signals. These techniques have been implemented in a system which accepts digital data at a continuous 10-Mword/s rate, D/A converts these data and delivers its 256-point Fourier transform to A/D converters. The system processes complex words consisting of 8 bits real and imaginary and maintains accuracy to 1%.
Space capsule ejection assembly Patent (1966)

Describing assembly for opening stabilizing and decelerating flaps of flight capsules used in space research
A heuristic discussion of probabilistic decoding (1963)

This is another in a series of invited tutorial, status and survey papers that are being regularly solicited by the PTGIT Committee on Special Papers. We invited Profess01 Fano to commit to paprr his elegant but, unelaborate explanation of the principles of sequential decoding, a scheme which is currently contending for a position as the most practical implementation to dale of Shannon’s theory of noisy communication channels. -&e&l Pcqwrs Committw.
Postmortem Tissue Methamphetamine Concentrations Following Selegiline Administration (1990)

Selegiline is a relatively new antiparkinson's drug whose metabolites include methamphetamine and amphetamine. A 72-year-old female with apparently suicidal intentions was found dead at her residence. The cause of death was listed as coronary heart disease with a history of polypharmacy. The tissue methamphetamine and amphetamine concentrations resulting from selegiline administration are presented in this report.
A New Polymorph of Hydroxygallium Phthalocyanine and Its Application in a Photoreceptor (1996)

In recent polymorphism studies of gallium phthalocyanines, a new crystal form of hydroxygallium phthalocyanine (Type V HOGaPc) was obtained. It shows an extremely high photosensitivity (E1/2 = 1.3 mJ/m+2 at 780 nm) and excellent thermal stability. Furthermore, its photosensitivity is not affected by changing humidity. Hence, it is an useful charge generation material for an IR photoreceptor. From the TGA and Rietveld analysis of the Type V crystal, it is indicated that the highly photosensitive characteristic of this pigment does not depend on sensitization by water. The high sensitivity is attributed to the specific crystal structure and to the presence of the hydroxyl group, both of which are favorable for charge generation.
Core-halogenated, helical-chiral triphenylene-based columnar liquid crystals (1997)

Abstract It is shown that chlorination and even bromination of the mesogenic hexahexyloxytriphenylene 1 can take place at the sterically congested tetracyclic core delivering the respective monohalogenated, sevenfold substituted enantiotropic mesogens 3 and 4 in 32 and 17% yields, respectively, giving mesophases over greater temperature ranges. Miscibility tests among all mesogenic compounds of this study prove formation of the columnar hexagonal type of phase. The steric and electronic effects of those substituents, different from the six equal alkoxy groups, on the mesophase are discussed in detail. In our hands and to our surprise, the sterically hindered acceptor (nitro or halogeno) substituents of 2, 3, or 4 could not be replaced by an alkylthio group in nucleophilic aromatic substitution reactions using the aprotic polar solvent DMEU. Semi-empirical calculations on numerous hexaethers with one or two substituents, e.g. halogens or others, in one of the three bay regions of the triphenylene core reveal that these molecules are helically deformed due to the crowding in the molecule. In this new case of atropisomerism, the 1,12-disubstituted derivatives should offer the possibility of resolution into enantiomers and, therefore, of studying disc-like mesomorphic compounds possessing for the first time the origin of chirality within their molecular centre.
High-gain Nd:YLF amplifier end-pumped by a beam-shaped broad-stripe diode laser (1996)

The output from a 1W broad-stripe diode, reshaped by a two-mirror beam-shaper, is used to end-pump a Nd:YLF amplifier. In a double-pass configuration a small-signal gain of 240 has been obtained.
The relationship analysis of vegetation cover, rainfall and land surface temperature based on remote sensing in Tibet, China (2014)

The analyses of vegetation influenced by meteorological factors contribute to research the relationships between terrestrial ecosystems and climate changes. Using the data of normalized difference vegetation index, land surface temperature from MODIS satellite products and rainfall from TRMM satellite products to build 16-day data sequence from 2000 to 2011 years, this paper analyzed the spatial-temporal distribution of vegetation cover, land surface temperature and rainfall, and also discussed the relationships among three factors in Tibet. The results indicated that the mean vegetation coverage in August varied in the range of 0% to 99% depending on location. The southeastern part of Tibet had annual rainfall of 600~800 mm, whereas the western part suffered from drought with a value below 200 mm. The mean annual land surface temperature varied between −8.9°C and 16.3°C. During the whole year, the correlation coefficient between vegetation index and land surface temperature was the smallest in July. The correlation coefficient between vegetation index and rainfall was the biggest in September. Vegetation was influenced greater by the rainfall than land surface temperature from April to October in Tibet.
Automating the assignment of submitted manuscripts to reviewers (1992)

The 117 manuscripts submitted for the Hypertext '91 conference were assigned to members of the review committee, using a variety of automated methods based on information retrieval principles and Latent Semantic Indexing. Fifteen reviewers provided exhaustive ratings for the submitted abstracts, indicating how well each abstract matched their interests. The automated methods do a fairly good job of assigning relevant papers for review, but they are still somewhat poorer than assignments made manually by human experts and substantially poorer than an assignment perfectly matching the reviewers' own ranking of the papers. A new automated assignment method called “n of 2n” achieves better performance than human experts by sending reviewers more papers than they actually have to review and then allowing them to choose part of their review load themselves.
An arbitrary ratio resizer for MPEG applications (2000)

We present a linear, arbitrary ratio resizer for the interoperability of digital video in MPEG applications. The resizer supports conversions among interlaced/progressive, 4:2:0, 4:2:2 and 4:4:4 video formats with arbitrary resizing and fractional shift. Particularly, for interlaced to progressive conversion (deinterlacing), a combined resizing and deinterlacing algorithm is proposed, which is bandwidth efficient for hardware implementation. With the proposed algorithm, resizing filters can be generated and implemented on-the-fly using software. The algorithm is also a useful tool for deriving scheduling information for hardware implementation.
Modeling of via formation by photosensitive dielectric materials for MCM applications (2002)

The Packaging Research Center at the Georgia Institute of Technology focuses on thin-film multi-chip modules (MCMs) as the strategic solution in electronic packaging because this technology offers advantages in miniaturization, electrical and thermal performance, cost and reliability. Via formation using photosensitive polymer technology reduces process costs and hence is of great interest. However, to overcome process complexity issues and to facilitate low-cost manufacturing, process optimization and control are required. In this paper, a modeling approach for via formation in MCM dielectric layers composed of benzocyclobutene (BCB) is presented. A series of designed experiment is used to characterize the via formation workcell, and neural network process models are constructed for the various unit process (including spin coating, pre-bake, expose, develop, cure and de-scum). Film thickness, uniformity, via wall angle, via yield, and film retention are modeled. The neural network models will eventually be used for the development of a supervisory process control scheme.
Acrylate terpolymer in fabrication of medicated skin patches (2001)

Abstract An acrylate based pressure sensitive adhesive (PSA) was synthesized to design a drug‐in‐adhesive (DIA) type transdermal therapeutic system (TTS) for nitroglycerin used in the treatment of angina pectoris. 2‐Ethylhexyl acrylate (EHA), methyl methacrylate (MMA) and acrylic acid (AA) were used to synthesize the PSA by free radical solution polymerization. The effects of reaction time, reaction temperature, initiator concentration and solvent on polymerization were studied. The synthesized terpolymer was characterized by 1 H‐NMR, FT‐IR, differential scanning calorimetry (DSC) and gel permeation chromatography (GPC) and also evaluated for intrinsic viscosity, refractive index, peel strength, moisture uptake and skin irritation potential. The PSA was used to develop DIA type patches of nitroglycerin. The patches were cast using solvent evaporation technique and dried at controlled temperature. The patches were evaluated for thickness uniformity, weight variation, peel strength and moisture pick‐up. The percent drug content and in vitro drug release was determined by high pressure liquid chromatography (HPLC) method. On the basis of in vitro release profile, patches were selected for in vitro skin permeation studies. The developed formulation TP‐1 (K = 24.892 mcg/cm 2 /hr) followed zero‐order rate kinetics and showed better skin permeation rate in comparison to the marketed TTS (MTTS) (K = 17.413 mcg/cm 2 /hr). TP‐1 was subjected to stability testing for a period of 1 year according to ICH guidelines. The patches were found to be stable and an expiry date of 2 years was predicted with storage at 25 °C or below. Copyright © 2001 John Wiley & Sons, Ltd.
Hydrogen Etching of Silicon Carbide (1969)

The etch rate of SiC crystals with hydrogen was investigated as a function of the reaction temperature, the hydrogen flow velocity and the hydrogen partial pressure in the H 2 -Ar mixture. An etching reaction mechanism and calculated expressions for the etch rate have been developed based on thermodynamical considerations. The experimental results are well explained from the approximate expression at the etch rate region higher than about 3 µ/min.
A generational mostly-concurrent garbage collector (2000)

This paper reports our experiences with a mostly-concurrent incremental garbage collector, implemented in the context of a high performance virtual machine for the Java™ programming language. The garbage collector is based on the “mostly parallel” collection algorithm of Boehm et al. and can be used as the old generation of a generational memory system. It overloads efficient write-barrier code already generated to support generational garbage collection to also identify objects that were modified during concurrent marking. These objects must be rescanned to ensure that the concurrent marking phase marks all live objects. This algorithm minimises maximum garbage collection pause times, while having only a small impact on the average garbage collection pause time and overall execution time. We support our claims with experimental results, for both a synthetic benchmark and real programs.
Redistribution of blood flow after thermal injury and hemorrhagic shock (1988)

Diminished mucosal mass and a diminished rate of DNA synthesis by the intestinal mucosa have been identified in the rat after thermal injury. Because these changes may be associated with ischemia, the distribution of intestinal blood flow was studied after a thermal injury and compared with the blood flow distribution after hemorrhagic shock. For the thermal injury, anesthetized animals received a standardized 20% body surface area, full-thickness injury and were given intraperitoneal saline resuscitation. By the use of 46Sc- or 141Ce-labeled microspheres, no changes in intestinal and hepatic blood flow occurred after thermal injury. In contrast, a marked redistribution of blood flow was identified after hemorrhagic shock in which a decrease in arterial blood flow was identified to the stomach and to the small and large intestine. Although clinical shock was not present, the cardiac output decreased to a comparable degree in the hemorrhagic shock and the thermal injury. These studies indicate that although physiological changes in intestinal mucosa can be demonstrated after burn injury, these changes are not due to decreases in mesenteric arterial blood flow.
Synthesis and ionization constants of m- and p-substituted cis-3-phenylcyclobutanecarboxylic acids (1968)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and ionization constants of m- and p-substituted cis-3-phenylcyclobutanecarboxylic acidsJoseph A. Caputo and Richard FuchsCite this: J. Org. Chem. 1968, 33, 5, 1959–1962Publication Date (Print):May 1, 1968Publication History Published online1 May 2002Published inissue 1 May 1968https://pubs.acs.org/doi/10.1021/jo01269a056https://doi.org/10.1021/jo01269a056research-articleACS PublicationsRequest reuse permissionsArticle Views354Altmetric-Citations11LEARN 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
Evolution of the team approach in breast cancer (1975)

Dr. Wendell G. Scott hailed mammography as the first significant contribution to the control of breast cancer since Halsted described the radical mastectomy in 1903. Mammography as engendered new approaches and has supplied new concepts of breast cancer. Through the tenacity of a few physicians convinced something could be done for the breast cancer patient, the team against this dread disease has gradually, but solidly, been built and continues to grow.
Antibodies to Cerebroside Sulfate Inhibit the Effects of Morphine and β-Endorphin (1980)

Morphine and beta-endorphin inhibit the shaking response of pentobarbital-anesthetized rats to ice water. Stereotaxically guided administration of antibodies to cerebroside sulfate into the periaqueductal gray region, the most sensitive brain region in which to demonstrate inhibition of this response, antagonizes the effect of morphine and beta-endorphin. These results suggest that cerebroside sulfate may be an integral component of an opiate receptor in rat brain.
Near optimal approach in the designandimplementation of multilevel voltage source inverters (1999)

In most literature, the increments at each voltage step in a multilevel voltage source inverter are treated as identical. This approach may simplify the design of the inverter in both software and hardware while compromising the quality of the output power. Various schemes for searching the optimal voltage amplitudes and switching angles for each of the individual voltage steps are studied. A near optimal scheme is investigated and compared with the optimal one. It is found that the near optimal pattern has almost the same level of harmonic distortion as the optimal one. Unlike the optimal pattern, which involves complicated calculations, the near optimal pattern can be easily generated in real time. The near optimal scheme is implemented using a TMS320 C50 digital signal processor. Experimental results show agreement with simulated ones.