gebhart/patrepeval huggingface dataset:
Acid-base equilibriums, kinetics of copper ion incorporation, and acid-catalyzed zinc ion displacement from the water-soluble porphyrin .alpha.,.beta.,.gamma.,.delta.-tetrakis(1-methyl-4-pyridinio)porphine tetraiodide (1970)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAcid-base equilibriums, kinetics of copper ion incorporation, and acid-catalyzed zinc ion displacement from the water-soluble porphyrin .alpha.,.beta.,.gamma.,.delta.-tetrakis(1-methyl-4-pyridinio)porphine tetraiodidePeter Hambright and Everly B. FleisherCite this: Inorg. Chem. 1970, 9, 7, 1757–1761Publication Date (Print):July 1, 1970Publication History Published online1 May 2002Published inissue 1 July 1970https://pubs.acs.org/doi/10.1021/ic50089a030https://doi.org/10.1021/ic50089a030research-articleACS PublicationsRequest reuse permissionsArticle Views1225Altmetric-Citations173LEARN 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
Mechanically Robust Gelatin–<scp>A</scp>lginate <scp>IPN</scp> Hydrogels by a Combination of Enzymatic and Ionic Crosslinking Approaches (2013)

In this report, novel biopolymer hydrogels composed of gelatin and alginate with an interpenetrating polymer network (IPN) structure were prepared by a combination of enzymatic and ionic crosslinking approaches. The gelation processes of the IPN hydrogels were monitored using rheological techniques. The data confirmed the formation of dual networks: one gelatin network crosslinked by transglutaminase (TG) and another alginate network crosslinked by calcium ions. The results of mechanical testing revealed that the tensile and compressive strength of the hydrogels crosslinked in the presence of both TG and calcium ions were significantly improved. Preliminary studies have also shown that the hydrogels can support cell adhesion and spreading. These mechanically robust biopolymer hydrogels prepared by such biocompatible approaches are promising for the development of tissue engineering scaffolds.
Vibrational properties of epitaxial films on metals. I. fcc Cu on the Ni(001) surface (1989)

The general vibrational properties of epitaxially grown fcc Cu films on Ni(001) have been studied using a central-force lattice-dynamical slab model. The theoretical results predicted the emergence of new film modes as the overlayer film's thickness increases. Calculated phonon dispersion curves and spectral densities are presented and the regions of different localizations for the phonon modes in the two-dimensional projected phonon band have been identified.
Asymmetric Synthesis of Chiral Primary Amines by Transfer Hydrogenation of<i>N</i>-(<i>tert</i>-Butanesulfinyl)ketimines (2010)

The diastereoselective reduction of (R)-N-(tert-butanesulfinyl)ketimines by a ruthenium-catalyzed asymmetric transfer hydrogenation process in isopropyl alcohol, followed by desulfinylation of the nitrogen atom, is an excellent method to prepare highly enantiomerically enriched alpha-branched primary amines (up to >99% ee) in short reaction times (1-4 h). (1S,2R)-1-Amino-2-indanol has been shown to be a very efficient ligand to perform this transformation. Ketimines bearing either an aryl or a heteroaryl group and an alkyl group as substituents of the iminic carbon atom are very good substrates for this process. The reduction of a dialkyl ketimine could also be achieved, affording the expected amine with moderate optical purity (69% ee). Some amines which are precursors of very interesting biologically and pharmacologically active compounds have been prepared in excellent yields and enantiomeric excesses.
Laboratory Markers as Predictors of Mortality in Patients with Clostridium difficile Infection (2010)

Previous studies have identified laboratory markers for severe Clostridium difficile infection (CDI). The most consistent of these markers is the presence of marked leukocytosis. We examined the validity of these markers as predictors of mortality in patients with CDI. We excluded patients with preexisting hematologic conditions that would be expected to impair their ability to demonstrate leukocytosis. On univariate analysis, marked leukocytosis (P = 0.02), thrombocytopenia (P = 0.008), and increased blood urea nitrogen (P < 0.001) and creatinine (P = 0.001) levels were found to be significantly associated with mortality in patients with CDI. However, on logistic regression analysis, only renal impairment was found to be an independent predictor (odds ratio, 5.07). Importantly, in our study, leukocytosis was not an independent predictor after adjustment for other variables, which may be due to our selection criteria when adjusting for confounding variables. We are therefore of the opinion that in immunocompromised hosts who are leukopenic at the time of CDI diagnosis, other laboratory markers should be identified to serve as indicators for severe disease.
Respiratory microbiota: addressing clinical questions, informing clinical practice (2014)

Over the last decade, technological advances have revolutionised efforts to understand the role played by microbes in airways disease. With the application of ever more sophisticated techniques, the literature has become increasingly inaccessible to the non-specialist reader, potentially hampering the translation of these gains into improvements in patient care. In this article, we set out the key principles underpinning microbiota research in respiratory contexts and provide practical guidance on how best such studies can be designed, executed and interpreted. We examine how an understanding of the respiratory microbiota both challenges fundamental assumptions and provides novel clinical insights into lung disease, and we set out a number of important targets for ongoing research.
Processo de Inovação em Empresas de Capital Aberto da Serra Gaúcha (2017)

melhorado, ou um processo, ou um novo método de marketing, ou um novo método
Lagrange multiplier method used in BESIII kinematic fitting (2010)

In this paper, the kinematic fitting with the Lagrange multiplier method has been studied for BESIII experiment. First we introduce the Lagrange multiplier method and implement kinematic constraints. Then we present the performance of the kinematic fitting algorithm. With the kinematic fitting, we can improve the resolution of track parameters and reduce the background.
Preparation and Characterization of Grinding Wheels Based on a Bioresin Matrix and Glass Sand Abrasives (2015)

A 100% renewable, easily-prepared, and industrialized abrasive grinding wheel was produced based on a biobased thermosetting resins matrix; the matrix was made of condensed tannin-furanic resin, originating from biosourced raw materials such as tree barks and crops, which bond the particles of glass sand. These grinding wheels exhibited no cracks or pores. Moreover, the related properties of these products were characterized by the measurements of compression resistance, Brinell hardness, and wear resistance; the results were comparable to those of commercial grinding wheels prepared with synthetic phenolic resins and aluminum oxide particles. The results indicated that incomparable hardness and strong resistance towards compression can be obtained using the new tannin-based grinding wheels. Besides that, the results also revealed excellent properties of abrasiveness when compared to a commercial Taber Calibrade wheel H-18.
PfeIK1, a eukaryotic initiation factor 2α kinase of the human malaria parasite Plasmodium falciparum, regulates stress-response to amino-acid starvation (2009)

This study strongly suggests that a mechanism for versatile regulation of translation by several kinases with a similar catalytic domain but distinct regulatory domains, is conserved in P. falciparum.
Neuropathic pain in patients with sickle cell disease (2013)

Neuropathic pain exists in SCD. Valid screening tools can identify patients that would benefit from existing and future neuropathic pain therapies and could determine the impact of these therapies.
Transforming chitosan into N-doped graphitic carbon electrocatalysts (2014)

Chitosan, the only alkaline polysaccharide in nature with rich nitrogen content, is used as the sole precursor to obtain N-doped graphitic carbon-based ORR electrocatalysts. The findings of this work demonstrate that cheap, plentiful and renewable biomasses can be transformed into high value functional carbon materials.
Detecting cognitive and physical stress through typing behavior (2009)

Monitoring of cognitive and physical function is central to the care of people experiencing or at risk for various health conditions, but existing solutions rely on intrusive methods that are inadequate for continuous tracking. This research explores the possibility of detecting cognitive and physical stress by monitoring keyboard interactions with the eventual goal of detecting acute or chronic changes in cognitive and physical function. Preliminary results indicate that it is possible to classify cognitive and physical stress conditions relative to non-stress conditions based on keystroke and text features with accuracy rates comparable to those currently obtained using affective computing methods. The proposed approach is attractive because it requires no additional hardware, is unobtrusive, is adaptable to each user, and is very low-cost.
A Perceptually Tuned Watermarking Scheme for Color Images (2010)

Transparency and robustness are two conflicting requirements demanded by digital image watermarking for copyright protection and many other purposes. A feasible way to simultaneously satisfy the two conflicting requirements is to embed high-strength watermark signals in the host signals that can accommodate the distortion due to watermark insertion as part of perceptual redundancy. The search of distortion-tolerable host signals for watermark insertion and the determination of watermark strength are hence crucial to the realization of a transparent yet robust watermark. This paper presents a color image watermarking scheme that hides watermark signals in most distortion-tolerable signals within three color channels of the host image without resulting in perceivable distortion. The distortion-tolerable host signals or the signals that possess high perceptual redundancy are sought in the wavelet domain for watermark insertion. A visual model based on the CIEDE2000 color difference equation is used to measure the perceptual redundancy inherent in each wavelet coefficient of the host image. By means of quantization index modulation, binary watermark signals are embedded in qualified wavelet coefficients. To reinforce the robustness, the watermark signals are repeated and permuted before embedding, and restored by the majority-vote decision making process in watermark extraction. Original images are not required in watermark extraction. Only a small amount of information including locations of qualified coefficients and the data associated with coefficient quantization is needed for watermark extraction. Experimental results show that the embedded watermark is transparent and quite robust in face of various attacks such as cropping, low-pass filtering, scaling, media filtering, white-noise addition as well as the JPEG and JPEG2000 coding at high compression ratios.
Determination of lead in paint by differential-pulse anodic-stripping voltammetry (1978)

A procedure for the determination of lead in paints by differential-pulse anodic-stripping voltammetry is presented. Only a few milligrams of sample are required for the analysis. Dry ashing with sodium carbonate as the flux has been found to be a simple and effective method for the destruction of the organic matrix. Samples of the dried paint of small particle size should be used and the sample solution is adjusted to pH 4.0–4.6 with a buffer solution before analysis. Loss of lead by retention in a porcelain crucible is significant in analysis for trace levels of lead and a platinum crucible is recommended as the container in the ashing process. The inexpensive porcelain crucible can only be used if the lead content is of the order of 10–1 g.
Edge Effects on the Characteristics of Li Diffusion in Graphene (2010)

We study the adsorption and diffusion of Li atoms on the surface of planar graphenes by means of density functional theory. When the dimensionality of graphene is reduced to a quasi-one-dimension, armchair and zigzag edges appear. We show that the presence of these edges affects not only the reactivity of the carbon material toward the adsorption of Li adatoms but also their diffusion properties. These properties strongly depend on the specific morphology of the edges. Our results indicate that Li adatoms will diffuse toward the edges while Li diffusion channels appear along the ribbon axis. For most of the diffusion paths studied here, energy barriers are lower than those in graphene. This effect is significantly more pronounced toward the edges, where energy barriers can be up to 0.15 eV smaller than those in in graphene, producing an increase of up to 2 orders of magnitude in the diffusion coefficient at room temperature. Our results indicate that electrodes fabricated with these materials should increase the power of Li-ion batteries.
Smart metering and home automation solutions for the next decade (2011)

This paper emphasizes the use of the smart metering and home automation technologies for efficient utilization of energy, thus paving the way for a cleaner and greener environment for future generations. Next decade will revolutionize smart metering, Information and communications technology (ICT) and home automation by making it affordable, efficient and within the common man's reach. World over, tremendous work is going on in Advanced Metering Infrastructure (AMI), Smart Metering and Home Automation. Short distance Radio Frequency (RF) technologies like ZigBee <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">#</sup> , Z-Wave <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">#</sup> , Low Power Radio and Distribution Line Carrier (DLC) are ready to enter every household as the Home Area Network (HAN) of the future. Countries like USA, Australia and Italy etc have already started using AMI solutions while countries like China, South Korea, Austria, Spain, Sweden, Finland, Denmark, Netherlands, Norway, Ireland and UK are in process of implementing AMI [9]. In India under the Restructured Accelerated Power Development & Reform Program (R-APDRP), in the XI five year plan, smart metering and ICT solutions have been planned to increase efficiency, loss reduction, reduce energy theft and for efficient data collection for better energy accounting in the electrical sector. This is the beginning of the AMI in India [12].
Nucleocapsid Disassembly and Early Gene Expression by Positive-strand RNA Viruses (1985)

Microbiology Society journals contain high-quality research papers and topical review articles. We are a not-for-profit publisher and we support and invest in the microbiology community, to the benefit of everyone. This supports our principal goal to develop, expand and strengthen the networks available to our members so that they can generate new knowledge about microbes and ensure that it is shared with other communities.
Relational databases with exclusive disjunctions (2003)

The author presents a mechanism for representing exclusive disjunctive information in database tables using various tuple types and a range for the count of the number of tuples in the unknown relation denoted by a table. The relational algebra operators are extended to take the new tables as operands. Query evaluation in the extended model is sound and complete for relational algebra expressions consisting of projection, difference, Cartesian product, or selection operators. Possible storage structures for storing the base tables and algorithms for inserting tuples into a table are described.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Analog VLSI Implementation of Neural Network Architecture for Signal Processing (2012)

With the advent of new technologies and advancement in medical science we are trying to process the information artificially as our biological system performs inside our body. Artificial intelligence through a biological word is realized based on mathematical equations and artificial neurons. Our main focus is on the implementation of Neural Network Architecture (NNA) with on a chip learning in analog VLSI for generic signal processing applications. In the proposed paper analog components like Gilbert Cell Multiplier (GCM), Neuron activation Function (NAF) are used to implement artificial NNA. The analog components used are comprises of multipliers and adders' along with the tan-sigmoid function circuit using MOS transistor in subthreshold region. This neural architecture is trained using Back propagation (BP) algorithm in analog domain with new techniques of weight storage. Layout design and verification of the proposed design is carried out using Tanner EDA 14.1 tool and synopsys Tspice. The technology used in designing the layouts is MOSIS/HP 0.5u SCN3M, Tight Metal.
Micromachined in-plane tunable optical filter using thermo-optic effect (2003)

This paper presents, for the first time, a micromachined in-plane tunable optical filter (TOF) using thermo-optic effect for wavelength division multiplexed telecommunication. The TOFs are comprised of a Fabry-Perot silicon optical resonator formed between two distributed Bragg reflectors with high-reflectance based on silicon/air-gap pairs. The whole device was vertically fabricated using silicon deep reactive ion etching (DRIE). And input/output optical fibers were easily aligned along with the TOF structure on the substrate by exploiting in-plane fiber alignment. Tunability of the TOFs is experimentally achieved through thermal modulation of optical path length by heating the silicon resonator. As an input voltage increases, a notch of reflectance spectrum shifts to a longer wavelength with a tuning range of 9 nm and 3dB bandwidth of 2nm. The temperature of a silicon resonator was estimated to be about 93°C for the tuning range.
Pilot Dietary Intervention with Heat-Stabilized Rice Bran Modulates Stool Microbiota and Metabolites in Healthy Adults (2015)

Heat-stabilized rice bran (SRB) has been shown to regulate blood lipids and glucose, modulate gut mucosal immunity and inhibit colorectal cancer in animal and human studies. However, SRB's effects on gut microbial composition and metabolism and the resulting implications for health remain largely unknown. A pilot, randomized-controlled trial was developed to investigate the effects of eating 30 g/day SRB on the stool microbiome and metabolome. Seven healthy participants consumed a study meal and snack daily for 28 days. The microbiome and metabolome were characterized using 454 pyrosequencing and gas chromatography-mass spectrometry (GC-MS) at baseline, two and four weeks post-intervention. Increases in eight operational taxonomic units (OTUs), including three from Bifidobacterium and Ruminococcus genera, were observed after two and four weeks of SRB consumption (p<0.01). Branched chain fatty acids, secondary bile acids and eleven other putative microbial metabolites were significantly elevated in the SRB group after four weeks. The largest metabolite change was a rice bran component, indole-2-carboxylic acid, which showed a mean 12% increase with SRB consumption. These data support the feasibility of dietary SRB intervention in adults and support that SRB consumption can affect gut microbial metabolism. These findings warrant future investigations of larger cohorts evaluating SRB's effects on intestinal health.
Pressure belt: an integrated multisensor system (2003)

We report the development of a MEMS-based multi-sensor system, which provides a multitude of "smart" pressure sensors, by integration of sensors and electronics at the point-of-use. This multi-sensor system is easy to install and operate and can provide an order of magnitude more accurate pressure measurements than the current tube-based technology. To accomplish our goal we developed a standard network interface protocol capable of handling large numbers of sensors, a low-profile MEMS pressure sensor, and innovative packaging techniques, including packaging of the MEMS sensor and its associated electronics in an ASIC format on a high density multi-chip module substrate. Prototype versions were flown on Boeing 757-300, 737-BBJ, 767-400, and F-18E aircraft. Measurements obtained during flight were compared with results obtained by a reference sensor in a conventional package, connected to a pressure tube. The data taken by our modules were as good or better than the reference values. Flight test data of the production version recently flown on a Boeing 737-900 aircraft are also discussed.
Phase-shift-keying and on-off-keying with improved performances using electroabsorption modulators with interferometric effects (2007)

We present methods of optical modulation employing electroabsorption in an interferometric structure. The interferometric operation enables electroabsorption modulators for phase-shift keying and allows generation of on-off-keying signals with much improved extinction ratios. We demonstrate 40-Gb/s phase-shift-keying modulation, and up to 8.7 dB improvement in extinction ratio in 40-Gb/s on-off-keying modulation with 0.8V driving voltage using a commercial electroabsorption modulator. Methods of applying electroabsorption modulators for high spectral-efficiency formats generation are also proposed.
Gastrointestinal motor mechanisms in hyperglycaemia induced delayed gastric emptying in type I diabetes mellitus. (1997)

Hyperglycaemia reduces postprandial antral contractile activity and its organisation in patients with type I diabetes and autonomic neuropathy. These changes in antroduodenal motility are likely to constitute the mechanism through which gastric emptying of solids is delayed during high blood glucose concentrations in these diabetic patients.