gebhart/patrepeval huggingface dataset:
Time‐Resolved, In Situ DRIFTS/EDE/MS Studies on Alumina‐Supported Rhodium Catalysts: Effects of Ceriation and Zirconiation on Rhodium–CO Interactions (2014)

The effects of ceria and zirconia on the structure-function properties of supported rhodium catalysts (1.6 and 4 wt % Rh/γ-Al2O3) during CO exposure are described. Ceria and zirconia are introduced through two preparation methods: 1) ceria is deposited on γ-Al2O3 from [Ce(acac)3] and rhodium metal is subsequently added, and 2) through the controlled surface modification (CSM) technique, which involves the decomposition of [M(acac)x] (M=Ce, x=3; M=Zr, x=4) on Rh/γ-Al2O3. The structure-function correlations of ceria and/or zirconia-doped rhodium catalysts are investigated by diffuse reflectance infrared Fourier-transform spectroscopy/energy-dispersive extended X-ray absorption spectroscopy/mass spectrometry (DRIFTS/EDE/MS) under time-resolved, in situ conditions. CeOx and ZrO2 facilitate the protection of Rh particles against extensive oxidation in air and CO. Larger Rh core particles of ceriated and zirconiated Rh catalysts prepared by CSM are observed and compared with Rh/γ-Al2O3 samples, whereas supported Rh particles are easily disrupted by CO forming mononuclear Rh geminal dicarbonyl species. DRIFTS results indicate that, through the interaction of CO with ceriated Rh particles, a significantly larger amount of linear CO species form; this suggests the predominance of a metallic Rh phase.
Improving projection-based data analysis by feature space transformations (2013)

Generating effective visual embedding of high-dimensional data is difficult - the analyst expects to see the structure of the data in the visualization, as well as patterns and relations. Given the high dimensionality, noise and imperfect embedding techniques, it is hard to come up with a satisfactory embedding that preserves the data structure well, whilst highlighting patterns and avoiding visual clutters at the same time. In this paper, we introduce a generic framework for improving the quality of an existing embedding in terms of both structural preservation and class separation by feature space transformations. A compound quality measure based on structural preservation and visual clutter avoidance is proposed to access the quality of embeddings. We evaluate the effectiveness of our approach by applying it to several widely used embedding techniques using a set of benchmark data sets and the result looks promising.
Iterative interference cancellation and decoding for a coded UWB-TH-CDMA system in AWGN channel (2003)

We consider a low-complexity iterative receiver for decoding multiuser information data in a bandwidth efficient convolutionally coded UWB-TH-CDMA (ultra-wide bandwidth time-hopping spread-spectrum code-division multiple-access) system introduced by R.A. Scholtz (see Proc. Military Commun. Conf., vol.2, p.447-50, 1993). The proposed receiver structure consists of a bank of soft interference canceller-likelihood calculators (SICLC), each followed by a soft-input soft-output (SISO) convolutional decoder. Information is fed back from the SISO decoders to the SICLCs for interference cancellation. Each SICLC then provides soft information about the coded symbols in the form of a log-likelihood ratio (LLR), which is used by the corresponding SISO decoder as a priori information about the coded symbols. We evaluate the performance of the proposed receiver in AWGN channels. Our numerical results show that the new receiver significantly improves the system performance. Moreover, at relatively high signal-to-noise ratios, after few iterations, multiple access interference (MAI) is efficiently suppressed, and single-user performance is achieved.
Private information retrieval (2010)

Cryptographic protocols safeguard the privacy of user queries to public databases.
On the difficulty of bit-interleaved coded modulation for differentially encoded transmission over fading channels (2003)

The application of bit-interleaved coded modulation (BICM) in combination with differential encoding and non-coherent reception over flat fading channels is assessed. Since the labeling plays a central role for BICM we propose a suitable definition of Gray labeling for differentially encoded transmission. We show that for multiple symbol detection such a Gray labeling does not exist. Finally, we illustrate the consequences on the capacity by comparing BICM and an optimum coded modulation scheme.
Selective hydrogenation of carbon monoxide to oxygenates by use of a novel iron catalyst (1988)

We report a novel high-selectivity Fe/Cr2O3 catalyst for the title reaction which when unpromoted gives high selectivities for methanol production, and on addition of K+ as promoter gives combined selectivities for ethanol and ethanal of ca. 70%.
GLIMPSED: An Improved Docking Protocol for Cognate Docking (2016)

The cognate docking performance of Glide was evaluated using the Astex diverse set. The standard Glide SP protocol obtained a 85.7 % success rate when the shape similarity cutoff was set to 0.625. The analysis of docking failures pointed out that, when the SiteMap binding site exposure is less than 0.491, 51 out of 52 ligands are correctly positioned. In light of this important finding, an improved docking protocol called GLIMPSED was set up. GLIMPSED relies on the standard Glide SP protocol for binding sites with low exposure, while a more accurate sampling of docking poses followed by a final MM-GBSA rescoring is performed for those highly exposed to the solvent. GLIMPSED and Glide SP were compared applying an accurate and rigorous metrics described in the literature by Hawkins et al. As a result, GLIMPSED was able to dock 89.3 % of the ligands in a correct way. Even though this number is not remarkably different from that obtained with the standard method, it is indeed statistically significant. Applying the Cohen's effect size test, a small, but not trivial, superiority of GLIMPSED was found with respect to standard Glide SP protocol. In our view the SiteMap binding site exposure parameter should be used as guideline to decide whether either a standard or a more extended docking protocol has to be adopted to predict good binding poses.
Interference Networks With Point-to-Point Codes (2011)

The paper establishes the capacity region of the Gaussian interference channel with many transmitter-receiver pairs constrained to use point-to-point codes. The capacity region is shown to be strictly larger in general than the achievable rate regions when treating interference as noise, using successive interference cancellation decoding, and using joint decoding. The gains in coverage and achievable rate using the optimal decoder are analyzed in terms of ensemble averages using stochastic geometry. In a spatial network where the nodes are distributed according to a Poisson point process and the channel path loss exponent is β >; 2, it is shown that the density of users that can be supported by treating interference as noise can scale no faster than B <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2/β</sup> as the bandwidth <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">B</i> grows, while the density of users can scale linearly with B under optimal decoding.
Control Mechanism for Carbon‐Chain Length in Polyunsaturated Fatty‐Acid Synthases (2019)

Polyunsaturated fatty acids (PUFAs) such as docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) are essential fatty acids. PUFA synthases are composed of three to four subunits and each create a specific PUFA without undesirable byproducts. However, detailed biosynthetic mechanisms for controlling final product profiles have been obscure. Here, the bacterial DHA and EPA synthases were carefully dissected by in vivo and in vitro experiments. In vitro analysis with two KS domains (KS<sub>A</sub> and KS<sub>C</sub> ) and acyl-acyl carrier protein (ACP) substrates showed that KS<sub>A</sub> accepted short- to medium-chain substrates while KS<sub>C</sub> accepted medium- to long-chain substrates. Unexpectedly, condensation from C<sub>18</sub> to C<sub>20</sub> , the last elongation step in EPA biosynthesis, was catalyzed by KS<sub>A</sub> domains in both EPA and DHA synthases. Conversely, condensation from C<sub>20</sub> to C<sub>22</sub> , the last elongation step for DHA biosynthesis, was catalyzed by the KS<sub>C</sub> domain in DHA synthase. KS<sub>C</sub> domains therefore determine the chain lengths.
Expression of the gastrin-releasing peptide gene in human small cell lung cancer. Evidence for alternative processing resulting in three distinct mRNAs. (1986)

cDNA clones to human prepro-gastrin-releasing peptide (prepro-GRP) mRNA detect synthesis of prepro-GRP-related transcripts in 4 of 7 small cell lung cancer (SCLC) cell lines and 1 of 2 metastatic SCLC tumors examined. A correlation is noted between prepro-GRP gene expression and the occurrence of bombesin-related immunoreactivity in SCLC cell lines. Examination of the structure of prepro-GRP transcripts found in SCLC reveals three types of prepro-GRP mRNA which differ in the structure of a putative GRP-associated peptide in the pro-GRP precursor. The subcellular distribution of prepro-GRP-related RNAs and structure of SCLC-derived prepro-GRP cDNA clones suggest that all three types of transcript could function as mRNAs, although there are differences in the prevalence of the different RNA types in different cellular compartments. Comparison of the sequence of cDNA clones with the sequence of a genomic prepro-GRP clone reveals that the three forms of prepro-GRP mRNA arise from a single primary transcript which undergoes alternative processing from two splice donor sites to two splice acceptor sites. The predicted amino acid sequence of the translated products of the three mRNAs are quite distinct, leading to predicted pro-GRP molecules of differing structure.
Pharmakokinetisches Modell der subkutanen Insulinabsorption geeignet zur Parameterschätzung aus dem Insulinverlauf im Plasma (2009)

Article Pharmakokinetisches Modell der subkutanen Insulinabsorption geeignet zur Parameterschätzung aus dem Insulinverlauf im Plasma was published on January 1, 1992 in the journal Biomedical Engineering / Biomedizinische Technik (volume 37, issue s1).
Effect of physical rehabilitation on exercise tolerance in Chernobyl clean-up workers with chronic respiratory pathology (2008)

This prospective open comparative non-randomized study was aimed to assess effect of physical rehabilitation on exercise tolerance in Chernobyl clean-up workers with radionuclide-induced pneumopathy. The inpatient training programme included skeletal muscle training of upper and lower extremities and breathing strategies. Of 26 patients, 14 males underwent ≥ 4 training courses during the study and 12 males underwent &lt; 4 courses. As a result, physical rehabilitation in patients with radionuclide-induced pneumopathy improved physical tolerance but it should be more prolonged and be targeted both to skeletal and respiratory muscles. Further studies are necessary to assess long-term effects of rehabilitation in these patients.
Distributed Adaptive Importance Sampling on graphical models using MapReduce (2014)

In the case of a graphical model, machine learning algorithms used to evaluate a query can be broadly classified into exact and approximate inference algorithms. Exact inference algorithms use only network parameters to evaluate a query. However, these algorithms are typically intractable on large networks due to exponential time and space complexity. Approximate inference algorithms are widely used in practice to overcome this constraint, with a trade-off in accuracy. It includes sampling and propagation-based algorithms. These approximate algorithms may also suffer from scalability issues if applied on large networks, for achieving higher accuracy. To address this challenge, we have designed and implemented several MapReduce-based distributed versions of a specific type of approximate inference algorithm called Adaptive Importance Sampling (AIS). We compare and evaluate the proposed approaches using benchmark networks. Experimental results show that our proposed approaches achieve significant scaleup and speedup compared to the sequential method, while achieving similar accuracy asymptotically.
Isobacteriochlorins : a novel route (1992)

This thesis was digitised by the British Library from microfilm. You can acquire a single copy of this thesis for research purposes by clicking on the padlock icon on the thesis file. Please be aware that the text in the supplied thesis pdf file may not be as clear as text in a thesis that was born digital or digitised directly from paper due to the conversion in format. However, all of the theses in Apollo that were digitised from microfilm are readable and have been processed by optical character recognition (OCR) technology which means the reader can search and find text within the document. If you are the author of this thesis and would like to make your work openly available, please contact us: thesis@repository.cam.ac.uk
ChemInform Abstract: Enol Ethers as Substrates for Efficient Z‐ and Enantioselective Ring‐Opening/Cross‐Metathesis Reactions Promoted by Stereogenic‐at‐Mo Complexes: Utility in Chemical Synthesis and Mechanistic Attributes. (2012)

Abstract The reactions that involve enol ethers are shown to proceed readily and with exceptional (Z) selectivity.
Elution of disposable octadecylsilane cartridges with hydrophobic organic solvents (1982)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElution of disposable octadecylsilane cartridges with hydrophobic organic solventsSharon L. Pallante, Martin. Stogniew, Michael. Colvin, and Daniel J. LiberatoCite this: Anal. Chem. 1982, 54, 14, 2612–2613Publication Date (Print):December 1, 1982Publication History Published online1 May 2002Published inissue 1 December 1982https://pubs.acs.org/doi/10.1021/ac00251a051https://doi.org/10.1021/ac00251a051research-articleACS PublicationsRequest reuse permissionsArticle Views51Altmetric-Citations9LEARN 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
Hydrogen diffusion simulation model considering thermal and stress changes in spot welds (2019)

High strength steel sheets have been developed for both reducing automobile weight and keeping passengers’ safety. Delayed fracture due to diffusible hydrogen is known as one of problems in arc welds of high strength steel plates, which is often prevented by applying pre/post heating processes. However, there is little reported regarding hydrogen diffusion behavior during rapid temperature change in resistance spot welds of steel sheets. Hydrogen diffusion behavior is affected by thermal and stress fields. Therefore the effect of rapid change in these fields needs to be properly considered for elucidation of hydrogen diffusion behavior in resistance spot welds. This study aims to clarify the delayed fracture mechanism of resistance spot welds. The hydrogen diffusion simulation model considering the effects of thermal and stress changes during welding is constructed. It is assumed in the model that hydrogen solubility and diffusivity in the nugget are larger than those of base metal. A change in fracture pattern dependent on hydrogen environment can be well explained using this model. The numerical simulation predicts that high residual stress leads to hydrogen concentration at the edge of the nugget after welding. This concentration would be the main factor of the delayed fracture in the nugget when the nugget diameter is small. In this situation, hydrogen is introduced from antirust oil, water and contamination on sheet surfaces to the nugget during welding. Numerical simulation assumed in actual use is also performed, in which the hydrogen is introduced from the sheet surfaces. Hydrogen concentrates at the edge of the nugget in relatively mild hydrogen environment, whereas in severe environment it highly concentrates in the HAZ around the nugget before concentrating in the nugget. These calculated results can well explain the transition of fracture pattern from the nugget to the HAZ in the experiment.
Strategies for interfacing inorganic nanocrystals with biological systems based on polymer-coating (2014)

Interfacing inorganic nanoparticles and biological systems with the aim of developing novel imaging and sensing platforms has generated great interest and much activity. However, the effectiveness of this approach hinges on the ability of the surface ligands to promote water-dispersion of the nanoparticles with long term colloidal stability in buffer media. These surface ligands protect the nanostructures from the harsh biological environment, while allowing coupling to target molecules, which can be biological in nature (e.g., proteins and peptides) or exhibit specific photo-physical characteristics (e.g., a dye or a redox-active molecule). Amphiphilic block polymers have provided researchers with versatile molecular platforms with tunable size, composition and chemical properties. Hence, several groups have developed a wide range of polymers as ligands or micelle capsules to promote the transfer of a variety of inorganic nanomaterials to buffer media (including magnetic nanoparticles and semiconductor nanocrystals) and render them biocompatible. In this review, we first summarize the established synthetic routes to grow high quality nanocrystals of semiconductors, metals and metal oxides. We then provide a critical evaluation of the recent developments in the design, optimization and use of various amphiphilic copolymers to surface functionalize the above nanocrystals, along with the strategies used to conjugate them to target biomolecules. We finally conclude by providing a summary of the most promising applications of these polymer-coated inorganic platforms in sensor design, and imaging of cells and tissues.
PCTAIRE1-Knockdown Sensitizes Cancer Cells to TNF Family Cytokines (2015)

While PCTAIRE1/PCTK1/Cdk16 is overexpressed in malignant cells and is crucial in tumorigenesis, its function in apoptosis remains unclear. Here we investigated the role of PCTAIRE1 in apoptosis, especially in the extrinsic cell death pathway. Gene-knockdown of PCTAIRE1 sensitized prostate cancer PPC1 and Du145 cells, and breast cancer MDA-MB-468 cells to TNF-family cytokines, including TNF-related apoptosis-inducing ligand (TRAIL). Meanwhile, PCTAIRE1-knockdown did not sensitize non-malignant cells, including diploid fibroblasts IMR-90 and the immortalized prostate epithelial cell line 267B1. PCTAIRE1-knockdown did not up-regulate death receptor expression on the cell surface or affect caspase-8, FADD and FLIP expression levels. PCTAIRE1-knockdown did promote caspase-8 cleavage and RIPK1 degradation, while RIPK1 mRNA knockdown sensitized PPC1 cells to TNF-family cytokines. Furthermore, the kinase inhibitor SNS-032, which inhibits PCTAIRE1 kinase activity, sensitized PPC1 cells to TRAIL-induced apoptosis. Together these results suggest that PCTAIRE1 contributes to the resistance of cancer cell lines to apoptosis induced by TNF-family cytokines, which implies that PCTAIRE1 inhibitors could have synergistic effects with TNF-family cytokines for cytodestruction of cancer cells.
Efficacy of medium chain triglyceride oil dietary supplementation in reducing seizure frequency in dogs with idiopathic epilepsy without cluster seizures: a non‐blinded, prospective clinical trial (2020)

This study demonstrates the use of a diet enriched with MCTs as an adjunct to ASD treatment may have some antiseizure properties for dogs diagnosed with IE, as demonstrated in previous studies.
A Programmable DSP Architecture for Wireless Communication Systems (2006)

Programmable solutions for fast mobile communication systems are attracting ever-growing attention due to different and also evolving communication standards. They overcome the shortcomings of ASIC design, by allowing multimode operation, and general-purpose processors by exploiting the inherent data level parallelism in the application. MaRS, a macro-pipelined reconfigurable system, is a domain specific programmable parallel DSP architecture, aimed at harnessing the inherent parallelism in such applications. In this paper, we present the MaRS architecture along with the latest modifications and algorithms that are mapped onto it. We have mapped an IEEE 802.11a WLAN transmitter including a parallel FFT and soft decision Viterbi decoder on MaRS. Our simulation results show that the performance achieved on MaRS meets the stringent timing constraints of the IEEE 802.11a baseband transceiver at its highest rate, with 20% slack, leaving a playground for system level power optimization. Finally, we have mapped the EEMBC telecom suite on MaRS to evaluate and compare our architecture with existing architectures.
Crystalline boron monosulfide nanosheets with tunable bandgaps (2021)

Two-dimensional boron monosulfide nanosheets are realized by physical exfoliation of rhombohedral boron monosulfide.
Synthesis of 3,3‐Dialkyl‐6‐phenyl‐imidazo‐pyridinones Designed as Progesterone Receptor Modulator. (2007)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Optimization Strategies for Improving the Resolution of Alkaline Proteins Using 2D-Gel Electrophoresis (2018)

The resolution of alkaline proteins by 2D-polyacrylamide gel electrophoresis (2D-PAGE) is often accompanied by protein streak artifacts. To overcome this type of artifact formed during traditional 2D-PAGE, and to further improve the resolution of alkaline proteins, we developed a DeStreak ™ protocol that essentially eliminates the streaking artifact through the use of hydroethyldisulfide (HED) throughout the entire IEF run. We found that HED improves the separation and resolution of individual basic proteins when using a narrow range (pH 7-10) IPG strip format.
<p>Assessing Static Lung Hyperinflation by Whole-Body Plethysmography, Helium Dilution, and Impulse Oscillometry System (IOS) in Patients with COPD</p> (2020)

RV:TLC can represent the most reliable parameter in the assessment of hyperinflation, considering the absence of significant difference in its measurement between the two techniques. IOS provides supplementary information in the assessment of static hyperinflation.
Limit cycle oscillation in negative differential resistance devices (1988)

We present experimental current-voltage curves for GaAs/AlGaAs resonant tunneling diodes which show complicated multiple step structures when biased into negative differential resistance. We show that these results can be explained as limit cycle oscillations in the nonlinear dynamical system consisting of a negative differential resistance device loaded with a resonant circuit. Two circuit models, a resistor-capacitor-inductor load, and the dispersionless transmission-line load, are discussed. The limit cycles in the second model exhibit a variety of behaviors characteristic of nonlinear systems, such as bifurcations, period doubling, and Devil’s Staircases, resulting in good qualitative agreement with experiment.