gebhart/patrepeval huggingface dataset:
Novel binuclear platinum(III) octaphosphite complexes (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTNovel binuclear platinum(III) octaphosphite complexesChi Mng Che, William P. Schaefer, Harry B. Gray, Mark K. Dickson, Paul B. Stein, and D. Max RoundhillCite this: J. Am. Chem. Soc. 1982, 104, 15, 4253–4255Publication Date (Print):July 1, 1982Publication History Published online1 May 2002Published inissue 1 July 1982https://pubs.acs.org/doi/10.1021/ja00379a038https://doi.org/10.1021/ja00379a038research-articleACS PublicationsRequest reuse permissionsArticle Views385Altmetric-Citations65LEARN 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
Observations on serological cross-reactions between smooth Brucella species and organisms of other genera. (1984)

Serological cross-reactions have been demonstrated between smooth Brucella species and Escherichia coli 0:116 and 0:157, Salmonella serotypes of Kauffmann-White group N, Pseudomonas maltophilia and Yersinia enterocolitica 0:9 and 0:16. All of these organisms may evoke significant titres of cross-reacting antibodies in cattle and pigs inoculated by parenteral routes. E. coli 0:157, Salmonella urbana and Y. enterocolitica 0:9 evoked substantial titres of cross-reacting antibodies in cattle inoculated by the oral route with live organisms. Only Y. enterocolitica 0:9 was effective in evoking cross-reacting antibodies to Brucella in pigs inoculated by the same route. Differentiation of cross-reacting and homologous antibodies to Brucella was difficult and was not accomplished consistently by any single test.
Frequency doubling of narrow-linewidth pulsed fiber laser (2012)

A pulsed master oscillator power amplifier system is constructed using a double-cladding polarized Ybdoped fiber and an all-fiber Q-switched narrow-linewidth pulsed laser used as seed laser. This system has a high repetition rate and provides a nanosecond pulsed laser with a narrow linewidth and linear polarization. Moreover, it generates amplified radiation with up to 14 W of average power, narrow linewidth (full-width at half-maximum is smaller than 0.12 nm), linear polarization at 1 080-nm wavelength, repetition rate of 51 kHz, and pulse duration of approximately 50 ns. Based on this pulsed amplified radiation, 3.5 W of green laser, with an optical-to-optical efficiency of 27.3%, is obtained via single-pass frequency doubling using a noncritical phase matching KTP crystal.
Adaptive bit-allocation between the pole-zero synthesis filter and excitation in CELP (1991)

The authors propose a CELP (code excited linear prediction) coder with a novel adaptive bit allocation between the synthesis filter and excitation by changing the filter type between an all-pole filter and a pole-zero filter. The filter type and bit allocation are determined based on the minimum perceptually weighted error criterion. When an all-pole filter is selected as the synthesis filter, the input speech is coded in the same manner as a conventional CELP coder. When a pole-zero filter is selected, the zero filter's coefficients are coded in a closed loop. Experimental results reveal that the proposed CELP coder improves segmental signal-to-noise ratio by approximately 1 dB over a conventional CELP coder at 4.3 kb/s.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>
A computational study of droplet evaporation with fuel vapor jet ejection induced by localized heat sources (2015)

Droplet evaporation by a localized heat source under microgravity conditions was numerically investigated in an attempt to understand the mechanism of the fuel vapor jet ejection, which was observed experimentally during the flame spread through a droplet array. An Eulerian-Lagrangian method was implemented with a temperature-dependent surface tension model and a local phase change model in order to effectively capture the interfacial dynamics between liquid droplet and surrounding air. It was found that the surface tension gradient caused by the temperature variation within the droplet creates a thermo-capillary effect, known as the Marangoni effect, creating an internal flow circulation and outer shear flow which drives the fuel vapor into a tail jet. A parametric study demonstrated that the Marangoni effect is indeed significant at realistic droplet combustion conditions, resulting in a higher evaporation constant. A modified Marangoni number was derived in order to represent the surface force characteristics. The results at different pressure conditions indicated that the nonmonotonic response of the evaporation rate to pressure may also be attributed to the Marangoni effect.
Simulations on consumer tests: A systematic evaluation approach in an industrial case study (2014)

Context: Consumer tests for vehicles have long a tradition of almost two decades in Europe to assess vehicular safety abilities. For active safety systems like an emergency braking guard, different consumer-test-organizations (CTOs) around the world intensify now the challenges for automotive Original Equipment Manufacturer (OEM) in terms of specific test protocols. Objective: This work focuses on the systematic generation of possible vehicle trajectories within the allowed tolerance ranges for a simulation environment. It is of great interest to which extent the different test parameters will affect the brake timepoints in each test case as well as the residual velocity in case of a collision with a target vehicle. Method: A formal model using a graph-based representation of the allowed variances based on relevant time-points allows the selection of relevant trajectories as test cases. These trajectories are simulated afterwards to investigate its influence on the system's performance. Results: The systematic approach unveiled varying action points in time of the software of an emergency braking guard, which could influence the overall result of a consumer test. Conclusion: The use of a structured simulative approach for evaluating an active safety system during the development process enables a more focused feedback and supports extensive tests on real proving grounds by systematic and automated robustness analyses for example.
A 31P-NMR STUDY OF TISSUE RESPIRATION IN WORKING DOG MUSCLE DURING REDUCED, DELIVERY CONDITIONS (1992)

Depts. of Medicine, Univ. of California, San Diego, La Jolla, California; Univ. of Florida; and Dept. of Biochem. and Biophysics, Univ. of Penn.
Controlled Delivery of Paclitaxel from Stent Coatings Using Poly(hydroxystyrene-b-isobutylene-b-hydroxystyrene) and Its Acetylated Derivative (2005)

A poly(styrene-b-isobutylene-b-styrene) (SIBS) triblock polymer is employed as the polymer drug carrier for the TAXUS Express2 Paclitaxel-Eluting Coronary Stent system (Boston Scientific Corp.). It has been shown that the release of paclitaxel (PTx) from SIBS can be modulated by modification of either drug-loading ratio or altering the triblock morphology by blending. In the present work, results toward achieving release modulation of PTx by chemical modification of the styrenic portion (using hydroxystyrene or its acetylated version) of the SIBS polymer system are reported. The synthesis of the precursor poly[(p-tert-butyldimethylsilyloxystyrene)]-b-isobutylene-b-[(p-tert-butyldimethylsilyloxystyrene] triblock copolymers was accomplished by living sequential block copolymerization of isobutylene (IB) and p-(tert-butyldimethylsiloxy)styrene (TBDMS) utilizing the capping-tuning technique in a one-pot procedure in methylcyclohexane/CH3Cl at -80 degrees C. This procedure involved the living cationic polymerization of IB with the 5-tert-butyl-1,3-bis(1-chloro-1-methylethyl)benzene/TiCl4 initiating system and capping of living difunctional polyisobutylene (PIB) chain ends with 1,1-ditolylethylene (DTE) followed by addition of titanium(IV) isopropoxide (Ti(OIp)4) to lower the Lewis acidity before the introduction of TBDMS. Deprotection of the product with tetrabutylammonium fluoride yielded poly(hydroxystyrene-b-isobutylene-b-hydroxystyrene), which was quantitatively acetylated to obtain the acetylated derivative. The hydroxystyrene and acetoxystyrene triblock copolymers have acceptable mechanical properties for use as drug delivery coatings for coronary stent applications. It was concluded that the hydrophilic nature of the endblocks and polarity effects on the drug/polymer miscibility lead to enhanced release of PTx from these polymers. The drug-polymer miscibility was confirmed by differential scanning calorimetry and atomic force microscopy evaluations.
High Throughput Assay of Diffusion through Cx43 Gap Junction Channels with a Microfluidic Chip (2010)

This paper describes a microfluidic-based assay capable of measuring gap-junction mediated dye diffusion in cultured cells. The technique exploits multistream laminar flow to selectively expose cells to different environments, enabling continuous loading of cells in one compartment while monitoring, in real time, dye diffusion into cells of a neighboring compartment. A simple one-dimensional diffusion model fit to the data extracted the diffusion coefficient of four different dyes, 5-(6)-carboxyfluorescein, 5-chloromethylfluorescein, Oregon green 488 carboxylic acid, and calcein. Different inhibitors were assayed for their ability to reduce dye coupling. The chip can screen multiple inhibitors in parallel in the same cell preparation, demonstrating its potential for high throughput. The technique provides a convenient method to measure gap junction mediated diffusion and a screen for drugs that affect gap junction communication.
Role of Excited CF3CFHO Radicals in the Atmospheric Chemistry of HFC-134a (1996)

The atmospheric degradation of HFC-134a (CF3CFH2) proceeds via the formation of CF3CFHO radicals. Long path length FTIR environmental chamber techniques were used to study the atmospheric fate of CF3CFHO radicals. Two competing reaction pathways were identified for CF3CFHO radicals: reaction with O2, CF3CFHO + O2 → CF3C(O)F + HO2, and decomposition via C−C bond scission, CF3CFHO + M → CF3 + HC(O)F + M. CF3CFHO radicals were produced by two different reactions: either via the self-reaction of CF3CFHO2 radicals or via the CF3CFHO2 + NO reaction. It was found that decomposition was much more important when CF3CFHO radicals were produced via the CF3CFHO2 + NO reaction than when they were produced via the self-reaction of CF3CFHO2 radicals. We ascribe this observation to the formation of vibrationally excited CF3CFHO* radicals in the CF3CFHO2 + NO reaction. Rapid decomposition of CF3CFHO* radicals limits the formation of CF3C(O)F and hence CF3COOH in the atmospheric degradation of HFC-134a. We estimate that the CF3COOH yield from atmospheric oxidation of HFC-134a is 7−20%. Vibrationally excited alkoxy radicals may play an important role in the atmospheric chemistry of other organic compounds.
In-Band Sensing of the Adversary’s Channel for Secure Communication in Wireless Channels (2019)

We propose a model of secure communication over wireless channels in which the legitimate parties leverage Radio Tomographic Imaging (RTI) to learn the adversary. Specifically, we model the results of RTI as an "in band" sensing channel that provides causal information about the eavesdropper's path-loss to the transmitter. This ability to learn the path-loss is exploited to achieve secrecy, even in presence of an eavesdropper that moves to optimize its path-loss and improves its eavesdropping. We show that the secrecy rates achieved are the same as those that would have been obtained with hindsight, had the transmitter known the average path-loss ahead of time.
Heat transfer characteristics in a pulsating fluidized bed in relation to bubble characteristics (2002)

Abstract A pulsating fluidized bed is operated with two sequential durations designated as an on‐period with injecting fluidization gas and an off‐period without it. The heat transfer coefficient between a vertically immersed heater and bed in a pulsating fluidized bed is measured under various pulse cycles and fluidized particles. The obtained results are compared with those in a normal fluidized bed with continuous fluidization air injection. The relationship between heat transfer coefficients and bubble characteristics, evaluated using a digital video camera, has also been investigated. For certain fluidized particles and operating pulse cycles, the fluidization of particles and the increment of heat transfer coefficients can be obtained under a mean air velocity based on a pulse cycle duration smaller than the minimum fluidization air velocity in a normal fluidized bed. Under the pulse cycles where a static bed through the whole bed is formed in the off‐period duration, the improved heat transfer rate over that in a normal fluidized bed can be measured. This may be attributed to large bubble formation. As heat transfer in the pulsating fluidized bed is obstructed with increasing time to keep a static bed due to the excessive off‐period duration, it is indicated that there is an optimum off‐period duration based on the heat transfer rate. © 2002 Wiley Periodicals, Inc. Heat Trans Asian Res, 31(4): 307–319, 2002; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/htj.10038
Ammonia Decomposition and Synthesis over Multinary Magnesioferrites: Promotional Effect of Ga on Fe Catalysts for the Decomposition Reaction (2016)

Abstract Magnesioferrite (MgFe 2 O 4 )‐derived Mesoporous spinels of the type MgFeM 3+ O 4 with M 3+ =Fe, Al, and Ga obtained upon calcination of hydrotalcite‐like compounds were investigated in the ammonia decomposition reaction at 1 bar and the synthesis of ammonia at 90 bar. The corresponding precursors were synthesized by co‐precipitation at 50 °C and constant pH of 10.5. N 2 physisorption, PXRD, HR‐TEM, H 2 ‐TPR, and NH 3 ‐TPD were applied in order to obtain information about the textural, (micro‐)structural, solid‐state kinetics in reducing atmosphere, and adsorption properties of the samples. While phase‐pure layered double hydroxides (LDHs) were obtained for Al and Ga, magnesioferrite as the desired oxide phase and a low fraction of magnetite were formed besides the targeted precursor phase during co‐precipitation in the presence of Fe 2+ and Fe 3+ species. Reduction of the binary and ternary magnesioferrites occurs via two consecutive reactions. Only the second stage is shifted towards higher temperatures after incorporation of Al and Ga. The latter element boosts the catalytic decomposition of ammonia, yielding a 2‐fold and 5‐fold higher conversion at 500 °C compared to the samples containing Fe 3+ and Al 3+ species, respectively. In situ XRD measurements showed that this unprecedented promotional effect is related to the generation of (Fe, Ga)Fe 3 N. This phase, however, is detrimental for the synthesis of ammonia at elevated pressures in which the binary system outperforms the ternary spinels, yielding 30 % of the activity obtained with a highly promoted Fe‐based industrial catalyst.
The Pretreatment of Xiaoqinglong Decoction Alleviates Inflammation and Oxidative Damage and Up-Regulates Angiotensin-Converting Enzyme 2 in Lipopolysaccharide-Induced Septic Acute Lung Injury Rats (2022)

Xiaoqinglong decoction (XQLD), a classic prescription of Traditional Chinese Medicine, has already been used clinically to cure acute lung injury (ALI), but its mechanism remains unclear. This subject aimed to explore the preventive role of XQLD in septic ALI rats besides its effects on angiotensin-converting enzyme (ACE)2 and its downstream factors. After, respectively, administrated with different concentrations of XQLD (6.25 g/kg/d, 12.5 g/kg/d, 25 g/kg/d) for 5 days and dexamethasone (DEX, 1 mg/kg) for 0.5 h, the rat models of ALI were established by intraperitoneal injection of lipopolysaccharide (LPS, 5 mg/kg) for 24 h. All rats were evaluated by lung function test, arterial blood gas analysis, morphological observation, lung wet/dry (W/<i>D</i>) ratio, and the lung injury score. The levels of malonaldehyde (MDA), superoxide dismutase (SOD), interleukin (IL)-1<i>β</i>, tumor necrosis factor (TNF)-<i>α</i>, and angiotensin (Ang) (1-7) in the lung were measured through biochemical and ELISA kits. The expressions of angiotensin-converting enzyme (ACE)2, mitochondrial assembly receptor (MasR), and nuclear factor (NF)-<i>κ</i>B in lung tissue were detected by qRT-PCR and western blotting. Positive reaction cells of MasR were observed by immunohistochemistry. The results show that XQLD significantly ameliorated septic lung injury including edema and hemorrhage, as well as improved pulmonary function and arterial blood gas. Furthermore, XQLD markedly decreased the levels of IL-1<i>β</i>, TNF-<i>α</i>, MDA, and NF-<i>κ</i>B while increased the levels of SOD, Ang (1-7), ACE2, and MasR in septic ALI rats. Pearson correlation showed that the expressions of ACE2 were inversely related to IL-1<i>β</i>, TNF-<i>α</i>, MDA, and NF-<i>κ</i>B and positively correlated with SOD contents. Our data indicated that XQLD pretreatment alleviated inflammation and oxidative damage in septic ALI rats, which might be related to the up-regulation of ACE2-Ang (1-7)-MasR axis and inhibition of the NF-<i>κ</i>B pathway.
Overexpression of a reversion-related protein in the revertant RR cells (1996)

The cDNA insert of the plasmid p14-6[1] is found to be the 3'-untranslatcd region (3'-UTR) of the transcription factor for human interleukin-6, NF-IL6. This 3' -DTK is actively transcribed in the revertant cell line RR, which contains the p14-6 plasmid integrated into its genomic DNA. Simultaneously a protein specifically bound to this 3'-UTR is expressed in significantly larger amounts. Its overexpression is apparently related to the reversion of the malignant cellular phenotype. The properties of this protein, named BNF, and possible reasons for its overexpression are discussed, and hypothesis on the mechanism of reversion of the RR cells is proposed.
<title>Progress toward use of a dense plamsa focus as a light source for production EUV lithography</title> (2001)

Recent advances in the Dense Plasma Focus (DPR) under investigation by Cymer as an EUV light source have increased both the total energy storage capacity and the peak drive current. Previous generation DPF tools built by Cymer produced no measurable EUV radiation while employing Xenon as a source gas, but instead employed Lithium vapor due to its higher emission efficiency at low plasma temperatures. With Xenon as a source gas, this generation DPF exhibits efficiency similar to other sources employing direct electrical drive of the Xenon plasma. An emission efficiency of greater than 0.20% has been measured into 2(pi) str and 2% bandwidth centered at 13.5 nm. Other characteristics of this DPF have been measured such as energy stability, spectrum, source size, position stability, and operation at high repetition rates. In addition, the out-of-band radiation in the UV/Vis region (130nm-1300nm) has been measured and found to be only 0.38% of all radiation emitted by this source. Such low out-of-band radiation opens up the possibility of eliminating the Spectral Purity Filter and the problems associated with its use. This source concept does not use a multi-layer dielectric mirror as the first collector, but instead employs a grazing incidence collector that is more tolerant to debris. Progress has been made in the fabrication quality of this optic. Recent measurements of prototypes show that this optic will not degrade the source brightness. Also, a more efficient design has been created that consist of two shells coated with Ruthenium. This design collects and re-images 18.6% of the EUV radiation emitted into 2(pi) str.
Light Emission Due to Energy Transfer from Gd[sup 3+] to Eu[sup 3+] Ions in Paramagnetic NaGdF[sub 4]:Eu[sup 3+] Submicrometer Disks (2010)

The paramagnetic NaGdF4: Eu3+ submicrometer disks exhibit a red emission under the excitation of UV light and a low voltage electron beam. The energy transfer from the Gd3+ to Eu3+ ions in NaGdF4: Eu3+ becomes less efficient with increasing Eu3+ doping concentration, which can be used to adjust the relative intensity of emission excited at 394 and 273 nm. The energy transfer process is less efficient at 10 K than at room temperature, which might be due to the existence of trap states that hampers the energy migration at low temperature. The cathodoluminescence (CL) spectrum and the image of NaGdF 4: Eu3+ are reported, and the CL mechanism is discussed. This multifunctional material with a uniform disk morphology may be potentially applied in lighting, field emission display, and magnetic resonance imaging.
Preparation and Culture of Chicken Auditory Brainstem Slices (2011)

The chicken auditory brainstem is a well-established model system that has been widely used to study the anatomy and physiology of auditory processing at discreet periods of development 1-4 as well as mechanisms for temporal coding in the central nervous system 5-7. Here we present a method to prepare chicken auditory brainstem slices that can be used for acute experimental procedures or to culture organotypic slices for long-term experimental manipulations. The chicken auditory brainstem is composed of nucleus angularis, magnocellularis, laminaris and superior olive. These nuclei are responsible for binaural sound processing and single coronal slice preparations preserve the entire circuitry. Ultimately, organotypic slice cultures can provide the opportunity to manipulate several developmental parameters such as synaptic activity, expression of pre and postsynaptic components, expression of aspects controlling excitability and differential gene expression This approach can be used to broaden general knowledge about neural circuit development, refinement and maturation.
Regulation of Epidermal Growth Factor Receptor Trafficking by Lysine Deacetylase HDAC6 (2009)

Binding of epidermal growth factor (EGF) to its receptor leads to receptor dimerization, assembly of protein complexes, and activation of signaling networks that control key cellular responses. Despite their fundamental role in cell biology, little is known about protein complexes associated with the EGF receptor (EGFR) before growth factor stimulation. We used a modified membrane yeast two-hybrid system together with bioinformatics to identify 87 candidate proteins interacting with the ligand-unoccupied EGFR. Among them was histone deacetylase 6 (HDAC6), a cytoplasmic lysine deacetylase, which we found negatively regulated EGFR endocytosis and degradation by controlling the acetylation status of alpha-tubulin and, subsequently, receptor trafficking along microtubules. A negative feedback loop consisting of EGFR-mediated phosphorylation of HDAC6 Tyr(570) resulted in reduced deacetylase activity and increased acetylation of alpha-tubulin. This study illustrates the complexity of the EGFR-associated interactome and identifies protein acetylation as a previously unknown regulator of receptor endocytosis and degradation.