gebhart/patrepeval huggingface dataset:
The Radical Addition of Hydrogen Bromide to Hexafluoropropene (1962)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Radical Addition of Hydrogen Bromide to HexafluoropropeneF. W. Stacey and J. F. Harris Jr.Cite this: J. Org. Chem. 1962, 27, 11, 4089–4090Publication Date (Print):November 1, 1962Publication History Published online1 May 2002Published inissue 1 November 1962https://pubs.acs.org/doi/10.1021/jo01058a526https://doi.org/10.1021/jo01058a526research-articleACS PublicationsRequest reuse permissionsArticle Views51Altmetric-Citations2LEARN 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
Robust Discriminative Tracking via Landmark-Based Label Propagation (2015)

The appearance of an object could be continuously changing during tracking, thereby being not independent identically distributed. A good discriminative tracker often needs a large number of training samples to fit the underlying data distribution, which is impractical for visual tracking. In this paper, we present a new discriminative tracker via landmark-based label propagation (LLP) that is nonparametric and makes no specific assumption about the sample distribution. With an undirected graph representation of samples, the LLP locally approximates the soft label of each sample by a linear combination of labels on its nearby landmarks. It is able to effectively propagate a limited amount of initial labels to a large amount of unlabeled samples. To this end, we introduce a local landmarks approximation method to compute the cross-similarity matrix between the whole data and landmarks. Moreover, a soft label prediction function incorporating the graph Laplacian regularizer is used to diffuse the known labels to all the unlabeled vertices in the graph, which explicitly considers the local geometrical structure of all samples. Tracking is then carried out within a Bayesian inference framework, where the soft label prediction value is used to construct the observation model. Both qualitative and quantitative evaluations on the benchmark data set containing 51 challenging image sequences demonstrate that the proposed algorithm outperforms the state-of-the-art methods.
ANTI-CD154 OR CTLA4Ig OBVIATES THE NEED FOR THYMIC IRRADIATION IN A NON-MYELOABLATIVE CONDITIONING REGIMEN FOR THE INDUCTION OF MIXED HEMATOPOIETIC CHIMERISM AND TOLERANCE1 (1999)

One injection of anti-CD154 or CTLA4Ig overcomes the need for TI or prolonged host TCD in a preclinical model for the induction of mixed chimerism and deletional tolerance and thus further decreases the toxicity of this protocol. Achievement of tolerance with conditioning given over 24 hr suggests applicability to cadaveric organ transplantation.
d-Xylose Degradation Pathway in the Halophilic Archaeon Haloferax volcanii (2009)

The pathway of D-xylose degradation in archaea is unknown. In a previous study we identified in Haloarcula marismortui the first enzyme of xylose degradation, an inducible xylose dehydrogenase (Johnsen, U., and Schönheit, P. (2004) J. Bacteriol. 186, 6198-6207). Here we report a comprehensive study of the complete D-xylose degradation pathway in the halophilic archaeon Haloferax volcanii. The analyses include the following: (i) identification of the degradation pathway in vivo following (13)C-labeling patterns of proteinogenic amino acids after growth on [(13)C]xylose; (ii) identification of xylose-induced genes by DNA microarray experiments; (iii) characterization of enzymes; and (iv) construction of in-frame deletion mutants and their functional analyses in growth experiments. Together, the data indicate that D-xylose is oxidized exclusively to the tricarboxylic acid cycle intermediate alpha-ketoglutarate, involving D-xylose dehydrogenase (HVO_B0028), a novel xylonate dehydratase (HVO_B0038A), 2-keto-3-deoxyxylonate dehydratase (HVO_B0027), and alpha-ketoglutarate semialdehyde dehydrogenase (HVO_B0039). The functional involvement of these enzymes in xylose degradation was proven by growth studies of the corresponding in-frame deletion mutants, which all lost the ability to grow on d-xylose, but growth on glucose was not significantly affected. This is the first report of an archaeal D-xylose degradation pathway that differs from the classical D-xylose pathway in most bacteria involving the formation of xylulose 5-phosphate as an intermediate. However, the pathway shows similarities to proposed oxidative pentose degradation pathways to alpha-ketoglutarate in few bacteria, e.g. Azospirillum brasilense and Caulobacter crescentus, and in the archaeon Sulfolobus solfataricus.
Allozyme and mitochondrial DNA separation of Pacific northern bluefin tuna, <i>Thunnus thynnus orientalis</i> (Temminck and Schlegel), from southern bluefin tuna, <i>Thunnus maccoyii</i> (Castelnau) (1995)

Northern and southern bluefin tunas are morphologically similar and can be misidentified, posing problems for fishery management and marketing. Allozyme variation and restriction-site variation in mitochondrial DNA (mtDNA) were used to distinguish between the two species. A survey of 36 allozyme loci active in white muscle and liver tissue showed that the genetic identity between the species was high (Nei's I = 0.907). One diagnostic locus (sAH*) and two nearly diagnostic loci (ADA* and GDA*) were found, and four loci showed highly significant allele frequency differences (FH*, GPI-A*, PGDH* and sSOD*). A survey of the mtDNA genome, using 15 restriction enzymes and southern blotting, revealed five restriction enzymes that gave species-diagnostic restriction digest profiles (Ban I, Bcl I, Dra I, Pvu II, Xba I) and a further three enzymes (Pst I, Barn HI and Nco I) with large haplotype frequency differences. Mitochondrial DNA analysis provided more reliable discrimination of specimens than did allozyme analysis, although the more rapid allozyme identification will be accurate for most specimens. The two biochemical genetic methods were then used to identify Australian-caught fish of uncertain identity. Six of 12 tuna originally considered to be northern bluefin tuna were confirmed as northern bluefin and six were identified as southern bluefin. The presence of northern bluefin tuna as far south as south-western Tasmania was confirmed.
Transport Properties of Lithium Hectorite-Based Composite Electrolytes (2002)

Conductivity and lithium-ion transference numbers are reported for physically gelled composite electrolytes using lithium hectorite clay as the charge carrier and carbonate solvents (ethylene carbonate, propylene carbonate, and dimethyl carbonate). Results are compared with those of typical lithium-ion battery electrolytes based on lithium hexafluorophosphate and carbonate solvents. Room-temperature conductivities of the composite electrolytes as high as S/cm were measured. Because of the nature of the anionic clay particulates creating the gel structure, near-unity lithium-ion transference numbers are expected and were observed as high as 0.98, as measured by the dc polarization method using lithium-metal electrodes. Since the carbonates react with lithium and create mobile ionic species that significantly reduce the observed lithium-ion transference number, care must be taken to minimize or eliminate the presence of the reaction-formed ionic species. These hectorite-based composite systems are possible electrolytes for rechargeable lithium-ion batteries requiring high discharge rates. © 2002 The Electrochemical Society. All rights reserved.
Regulation of the tetrapyrrole biosynthetic pathway leading to heme and chlorophyll in plants and cyanobacteria (2002)

Photosynthetic organisms synthesize chlorophylls, hemes, and bilin pigments via a common tetrapyrrole biosynthetic pathway. This review summarizes current knowledge about the regulation of this pathway in plants, algae, and cyanobacteria. Particular emphasis is placed on the regulation of glutamate-1-semialdehyde formation and on the channelling of protoporphyrin IX into the heme and chlorophyll branches. The potential role of chlorophyll molecules that are not bound to photosynthetic pigment-protein complexes ('free chlorophylls') or of other Mg-containing porphyrins in regulation of tetrapyrrole synthesis is also discussed.
Interspecies Complementation of the LuxR Family Pathway-Specific Regulator Involved in Macrolide Biosynthesis (2016)

PikD is a widely known pathway-specific regulator for controlling pikromycin production in Streptomyces venezuelae ATCC 15439, which is a representative of the large ATP-binding regulator of the LuxR family (LAL) in Streptomyces sp. RapH and FkbN also belong to the LAL family of transcriptional regulators, which show greatest homology with the ATP-binding motif and helix-turn-helix DNA-binding motif of PikD. Overexpression of pikD and heterologous expression of rapH and fkbN led to enhanced production of pikromycin by approximately 1.8-, 1.6-, and 1.6-fold in S. venezuelae, respectively. Cross-complementation of rapH and fkbN in the pikD deletion mutant (ΔpikD) restored pikromycin and derived macrolactone production. Overall, these results show that heterologous expression of rapH and fkbN leads to the overproduction of pikromycin and its congeners from the pikromycin biosynthetic pathway in S. venezuelae, and they have the same functionality as the pathwayspecific transcriptional activator for the pikromycin biosynthetic pathway in the ΔpikD strain. These results also show extensive "cross-communication" between pathway-specific regulators of streptomycetes and suggest revision of the current paradigm for pathwayspecific versus global regulation of secondary metabolism in Streptomyces species.
Measuring Reservoir Compaction Using Time-Lapse Timeshifts (2006)

Time-lapse timeshifts refer to the differences in two-way seismic travel times that are frequently observed in the analysis of time-lapse seismic surveys. One source of timeshifts originates inside the reservoir interval as a result of changes in the pore-fluid properties that alter the seismic velocity. Another is from changes in seismic velocity and layer thickness that occur both inside and outside of the reservoir as a result of reservoir compaction and stress and strain redistribution in the surrounding formations. Timeshifts induced by changes in fluid properties are always zero above the top reservoir reflection event and constant below the base of the reservoir. These fluidinduced timeshifts can be significant (for example, when gas is released as an oil passes through bubble point) and are routinely calculated using Gassmann or similar theories and are not the focus of this paper. The compaction-induced timeshifts have opposite gradients on the inside and outside of the reservoir. Within the reservoir, the reduction in layer thickness and the expected increase in seismic velocity will reduce the seismic travel time across these layers. Outside the reservoir, the decrease in reservoir thickness is exactly balanced by surface subsidence and rock expansion. The expanding overburden produces increased layer thickness and slower seismic velocities that increase the seismic travel times. Observations on real time-lapse seismic data over compacting reservoirs show that the positive timeshifts that accrue in the overburden are larger than the negative timeshifts that accrue inside the reservoir (the sign convention chosen is that positive timeshifts result when the seismic travel time increases). The amount of overburden elongation cannot exceed the amount of reservoir compaction. So if the change in velocity were simply proportional to the change in vertical strain, the reduction in travel time through the reservoir would exceed the increase in travel time though the overburden. The net effect would be a negative timeshift below the reservoir. Instead positive timeshifts are observed below compacting reservoir indicting velocity reduction per unit elongation strain significantly exceeds the velocity increase per unit contraction strain. Using simple models of the velocity-strain response it is shown that time-lapse timeshifts are proportional to the stretching of the overburden layers and that this is highly correlated with the reservoir compaction. The net result is that time-lapse timeshifts are a good measurement of the reservoir compaction.
Mobile terminal location for UMTS (2003)

Interest in mobile phone location is expanding due to the implementation of the third generation (3G) multimedia phones. The initial need for accurate terminal positioning has been motivated by government authorities, mainly by the US FCC's E911 mandate for emergency services. In Europe, similar ideas have appeared but the primary interest is in commercial value-added functions. Systems resembling air navigation and secondary radar as brought down to street level and pedestrian speeds are also foreseen. This article presents an overview of UMTS mobile terminal location. The performance of standardized observed time difference of arrival (OTDOA) and a novel database correlation method (DCM) for wide bandwidth systems are evaluated through simulations in an urban microcell environment. DCM is shown to provide a reasonable location error of 25 m for 67% of the calls. The obtained respective OTDOA accuracy is 215 m only. Location problems encountered in built-up areas and relevant applications based on the obtained accuracy are discussed.
Theoretical and experimental study on the linear microstrip patch antenna array technique using e‐plane gap coupling (1992)

Abstract The purpose of this article is to present a theoretical method for analyzing an E‐plane gap‐coupled rectangular microstrip array antenna which consists of one center‐fed patch and several parasitic elements by use of the transmission‐line model and the equivalent circuit parameters for the capacitive gap between microstrip patch and the open end of the patch. Antenna characteristics such as radiation pattern and return loss are computed theoretically and compared with experimental results for illustrating the usefulness of this method.
Water-filtered infrared-A (wIRA) can act as a penetration enhancer for topically applied substances. (2008)

As most topically applied substances for the treatment of patients are mainly hydrophilic, wIRA can be used to improve the penetration of substances before or after application of substances - in the first case even of thermolabile substances - with a broad clinical relevance as a contact free alternative to an occlusive dressing.
Duration of Anticoagulation Therapy for Venous Thromboembolism (2008)

Treatment of acute deep vein thrombosis and pulmonary embolism-often denominated together as venous thromboembolism (VTE)- consists of parenteral administration of heparin (usually low-molecular-weight heparin or alternatively unfractionated heparin or fondaparinux) overlapped and followed by oral vitamin K antagonists that are administered for a certain period (usually 3 to 12 months). Recommended or suggested durations differ according to guidelines. Practically, the clinical decision in an individual patient depends upon the estimated risks of VTE recurrence and treatment-induced bleeding. The risk of VTE recurrence is higher in idiopathic events (about 10% per year during the first two years and 3% per year thereafter) (odds ratio of 2.4, compared to secondary events); in male subjects (at least before the age of 60, with an odds ratio of 2-4); in patients with persistently elevated D-dimer level (odds ratio of 2.3, compared with normal level); and during the first two years after discontinuation of treatment. The annual risk of major bleeding on anticoagulant treatment vary largely in observational studies with figures of 2% to 29%, depending on the patient characteristics. The case-fatality rate is 8% (DVT), 12% (PE) for recurrent VTE, and about 10% for major bleed. These figures do not support long-term anticoagulant therapy, except in those patients exhibiting a very high risk of recurrence and/or a very low risk of bleeding. New therapeutic aspects might impact on the duration of anticoagulant therapy after a venous thromboembolic event. They include the possibility of pursuing anticoagulant treatment at a reduced INR after an initial period with an INR 2-3, and the advent of new, more specific and orally active anticoagulants. These features might modify the risk-benefit balance of extending anticoagulant therapy beyond the usual, limited duration.
Superficial Bladder Cancer Treated with Bacillus Calmette-Guerin: A Multivariate Analysis of Factors Affecting Tumor Progression (1989)

A multivariate analysis was performed on data from 221 patients with superficial bladder tumors (papilloma in 30, grade II to III stage Ta in 51, grade II to III stage Tis in 111 and grade II to III stage T1 in 29) who were treated with intravesical bacillus Calmette-Guerin and followed for a minimum of 24 months or until progression. The purpose of this analysis was to identify prognostic variables predictive of tumor progression defined as muscle invasion, metastasis or endoscopically uncontrolled superficial bladder carcinoma involving the bladder and/or prostatic urethra. Variables examined before bacillus Calmette-Guerin, and at 3 and 6 months after bacillus Calmette-Guerin included age, sex, race, purified protein derivative reaction, duration of disease, tumor category, tumor grade, multifocality, results of cytology, flow cytometry, cystoscopy, biopsy, prior chemotherapy and bacillus Calmette-Guerin treatment regimen. Significant variables (Cox regression analysis, p less than 0.07) for tumor progression were before bacillus Calmette-Guerin--stage T1 tumors and duration of disease less than 1 year, at 3 months after bacillus Calmette-Guerin--stage T1 tumor, duration of disease less than 1 year, positive cytology studies and multifocality, and at 6 months after bacillus Calmette-Guerin--stage T1 tumor, positive cytology and positive biopsy other than stage T1 tumors. Prognostic risk groups were best defined at 6 months after bacillus Calmette-Guerin, the probability of tumor progression thereafter being at 1, 3 and 5 years, respectively, as follows: for risk group 1 (T1 tumor)--71, 100 and 100 per cent, for risk group 2 (positive biopsy other than T1 plus positive cytology)--25, 79 and 100 per cent, for risk group 3 (either positive biopsy other than stage T1 or positive cytology studies)--18, 40 and greater than 81 per cent, and for risk group 4 (negative biopsy and negative cytology studies)--2, 11 and 26 per cent, respectively. Evaluation of patients with superficial bladder carcinoma at 6 months after intravesical bacillus Calmette-Guerin therapy identifies the probability of tumor progression. Patients at high risk for tumor progression require alternative treatment strategies, whereas low risk patients can be observed for further therapy if necessary.
Regioselective and Stereospecific Cross‐Coupling of Primary Allylic Amines with Boronic Acids and Boronates through Palladium‐Catalyzed CN Bond Cleavage (2012)

The NH2 group serves as an effective leaving group in the palladium-catalyzed regioselective and stereospecific title reaction (see scheme). The reaction works well with aryl- and alkenylboronic acids and aryl-, alkenyl-, allyl-, and benzylboronates, and complete transfer of chirality has been achieved when using α-chiral primary allylic amines as the allylic electrophiles. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
The Catalytic Activity of Activated Nitrogenous Carbons. (1943)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Catalytic Activity of Activated Nitrogenous Carbons.Paul F. Bente and James H. WaltonCite this: J. Phys. Chem. 1943, 47, 2, 133–148Publication Date (Print):February 1, 1943Publication History Published online1 May 2002Published inissue 1 February 1943https://doi.org/10.1021/j150425a005Request reuse permissionsArticle Views47Altmetric-Citations10LEARN 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 InReddit PDF (857 KB) Get e-Alerts
Diagnostic significance of IgM antibody to hepatitis delta virus in fulminant hepatitis B (1990)

The prevalence of hepatitis delta virus (HDV) infection was studied in 25 adult patients with fulminant hepatitis who were admitted consecutively to our unit from February, 1986, to September, 1988. Enzyme and radioimmunoassays were used for the detection of serological markers of HAV, HBV, and HDV (HDAg, IgM anti-HD, total [IgG] anti-HD) infections. Two hundred twenty-nine serum samples (three to 19 samples/patient) were tested for serological markers of HDV infection. Of the 25 patients, 17 (68%) were HBsAg-positive, and the remaining eight (32%) were HBsAg-negative on admission to the hospital. All patients were seropositive for IgM anti-HBc. Serological markers of HDV infection were detected in 13 (52%) of the 25 patients. In particular, HDV infection was observed in nine (53%) of the 17 HBsAg-positive and in four (50%) of the eight HBsAg-negative patients with type B fulminant hepatitis. Survival was 16.7% for patients with hepatitis B and 57.8% for patients with B and D coinfection. Coinfections were responsible for fulminant hepatitis in 100% of drug addicts and 40% in patients who were not drug addicts. All patients with HBV/HDV coinfections became seropositive for IgM anti-HD. The results show that HDV infection has a significant role (52%) in type B fulminant hepatitis in an area with a moderate prevalence of HBV infections, that it should be tested in cases with early clearance of HBsAg, and that it does not seem to be accompanied by a high fatality rate.(ABSTRACT TRUNCATED AT 250 WORDS)
Production of Omega--3 Polyunsaturated Fatty Acid from Biodiesel--Waste Glycerol by Microalgal Fermentation (2007)

Glycerol represents the major byproduct in the biodiesel industry. In general, production of 100 kg of biodiesel yields ~10 kg of crude glycerol. Because it is prohibitively expensive to purify the crude glycerol into materials that can be used in the medical, health, and cosmetics industries, biodiesel producers must either dispose of it or give it away.