gebhart/patrepeval huggingface dataset:
Nonmagnetic Impurity Effects on S=1/2 Heisenberg Ladder Cu 2(C 5H 12N 2) 2Cl 4 (1998)

Magnetic measurements have been performed to investigate nonmagnetic impurity effects on a Zn-doped ladder system (Cu 1- x Zn x ) 2 (C 5 H 12 N 2 ) 2 Cl 4 . The paramagnetic contribution in the susceptibility χ ′ of the Zn-doped system increases with increasing x below the gap temperature. The susceptibility obeys the Curie law in the temperature range between 0.5 K and 2 K. However, at temperatures below 0.5 K, χ ′ T drops with decreasing temperature, which suggests the crossover in the Curie constant as predicted by Sigrist and Furusaki [J. Phys. Soc. Jpn. 65 (1996) 2385]. Magnetization curves of the Zn-doped system are compared with that of the pure system. The impurity-induced spin behaves like a paramagnetic S =1/2 spin and the spin-gap state survives even in the Zn-doped system with the content x up to 0.117. These results seem to originate from the weak interladder interaction of the system.
PCR amplification and DNA sequence of mcyA gene: The distribution profile of a toxigenic Microcystis aeruginosa in the Hartbeespoort Dam, South Africa (2013)

Using new polymerase chain reaction (PCR) primers, a once known to be under-transcribed microcystin synthetase A (mcyA) gene from the only known toxigenic cyanobacterium Microcystis aeruginosa dominating the Hartbeespoort Dam was consistently amplified from genomic DNA extracted from a set of algal and cell free water samples collected across this dam. In addition to this, five more mcy genes (mcyBCDEG) were also amplified during this study. The resultant mcyA PCR products (518 bp) were purified and sequenced and gave nucleotide sequence segments of 408 bp sizes. The obtained sequence was aligned to the published mcyA gene sequence available online on the NCBI database and resulted in 100% similarity to a 408 bp mcyA gene sequence segment of M. aeruginosa UWOCC RID-1. Furthermore, it was found that the above sequence segment (408 bp) spans from a common base in M. aeruginosa PCC 7806 and M. aeruginosa PCC 7820 from 141 to 548 bp in the N-methyl transferase (NMT) region signifying their closer relatedness to M. aeruginosa UWOCC strains. This study has for the first time amplified mcyA gene consistently from both intracellular and extracellular DNA extracts obtained from algal and cell free water samples, respectively. Sequence data and the amplified mcy genes showed that M. aeruginosa is widely distributed and dominant in this dam.
Ipso substitution of triarylvinyl cations by alkoxide anions (1991)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIpso substitution of triarylvinyl cations by alkoxide anionsTsugio Kitamura, Takashi Kabashima, Ichizo Nakamura, Tetsuro Fukuda, and Hiroshi TaniguchiCite this: J. Am. Chem. Soc. 1991, 113, 19, 7255–7261Publication Date (Print):September 1, 1991Publication History Published online1 May 2002Published inissue 1 September 1991https://pubs.acs.org/doi/10.1021/ja00019a025https://doi.org/10.1021/ja00019a025research-articleACS PublicationsRequest reuse permissionsArticle Views187Altmetric-Citations16LEARN 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
Abstract 16499: Hybrid Cryoballoon Pulmonary Vein Isolation and Radiofrequency Posterior Wall Isolation for Persistent Atrial Fibrillation (2020)

Introduction: Catheter ablation of persistent atrial fibrillation (AF) is associated with less successful outcomes compared to paroxysmal AF. The optimal ablation strategy for persistent AF is not well established. We report our center’s experience utilizing a hybrid ablation approach of cryoballoon (CB) pulmonary vein isolation (PVI) followed by radiofrequency (RF) left atrial posterior wall isolation (LAPWI). Methods: 134 patients with persistent AF who underwent catheter ablation between 2016 and 2019 at our center were retrospectively reviewed. Patients with congenital heart disease or prior left atrial ablation or surgery were excluded. Hybrid ablation (n=62) consisted of CB PVI followed by RF roof and floor lines resulting in LAPWI. The control group (n=72) had PVI ±LAPWI with either CB (n=38) or RF (n=34). Outcomes were monitored with office visits and 7-day Holter monitors at 3, 6, 12, and 24 months post-ablation. The primary endpoint was freedom from any documented atrial tachyarrhythmia over 30 seconds. Results: Concomitant atrial flutter ablation was performed in 19/62 (31%) and 5/72 (7%) of hybrid and control cases, respectively. There was no significant difference in procedure time, however fluoroscopy time was shorter with hybrid ablation compared to control (p&lt;.01). 18-month freedom from atrial tachyarrhythmias was 70.4% with hybrid ablation and 51.6% with PVI±LAPWI with a single energy source (p=.048). Among those with recurrence, mean AF burden was significantly lower with hybrid ablation (7%) than with a single-energy approach (60%). Conclusion: In this single center experience with multiple operators, hybrid CB-RF PVI and LAPWI reduced AF recurrence (incidence and burden) compared to PVI±LAPWI with a single energy source.
Muscular exercise, lactic acid and the supply and utilisation of oxygen.— Parts VII–VIII (1924)

Abstract (A) The relation between oxygen intake and severity of exertion. — When muscular exercise commences, the ventilation of the lungs, the oxygen intake and the carbon dioxide output rise rapidly, in a period of about 2½ minutes, to values characteristic of the severity of the exercise; at these values they remain approximately constant. If the exercise be moderate, i. e., if the oxygen intake does not approach the maximum for the subject investigated, then the exercise may be continued for a long time: the body is able, so to speak, to provide the energy required “out of income.” If, however, the effort be excessive, the condition of exercise is not stable, the ventilation, the oxygen intake and the carbon dioxide output tend to attain their maximum values, and fatigue and exhaustion gradually or rapidly set in. The relation between these quantities and the magnitude of the effort made is clearly shown in Table I, especially in the series of 14 experiments made on A. V. H. running; at speeds from 2·86 to 4·7 metres per second. These results are plotted as double circles in fig. 1; the other points shown are the results obtained with S., W., and J. (who have approximately the same body-weight and build as A. V. H.), and with C. N. H. L. and H. L. (who are lighter). The observations on the two latter have been “reduced” to the same body-weight as A. V. H. before plotting. The running was on an open-air grass track, about 90 metres round, the speed being kept constant by an observer calling the times of successive laps. In every case the collection of expired gases was preceded by a sufficient foreperiod of exercise (2½ minutes or more) to ensure that a steady condition was reached. The following conclusions may be drawn from these observations:— (1) At low speeds the ventilation is small and the respiratory quotient is low: the oxygen supply is adequate to the needs of the body, lactic acid does not accumulate, and a steady state is soon attained.
On the drag and virtual mass coefficients in Biot’s equations (1984)

If the solid constituent of a fluid saturated porous medium is assumed to be subjected to a uniform oscillatory motion, Biot’s equations can be solved for the drag and virtual mass coefficients in terms of the resulting oscillatory motion of the fluid. The determination of these coefficients is therefore reduced to the solution of a boundary value problem for a viscous, compressible fluid. As an example, the pores have been assumed to be cylindrical. The motion of the fluid has been determined theoretically by subjecting the wall of a cylinder of viscous compressible fluid to a uniform oscillatory motion and averaging the resulting fluid displacement over the volume of the cylinder. Motions parallel to and normal to the axis of the cylinder have been considered. In the case of motion parallel to the cylinder axis, the obtained coefficients are equivalent to those obtained by Biot and by Hovem and Ingram. By superimposing the parallel and normal cases, the coefficients for cylindrical pores at an arbitrary angle to the propagation direction have been obtained. Then by averaging with respect to the angle, the coefficients have been determined for a material containing pores of random orientation.
Catalytic Asymmetric 1,3-Dipolar Cycloaddition of a Nitrone Bearing a Bulky Amide Moiety to γ-Substituted Allylic Alcohols (2002)

Abstract A catalytic asymmetric 1,3-dipolar cycloaddition reaction of a nitrone possessing diisopropyl amide moiety to γ-substituted allylic alcohols was achieved by using diisopropyl (R,R)-tartrate as a chiral auxiliary to afford the corresponding 3,4,5-trisubstituted isoxazolidines with excellent enantioselectivity up to over 99% ee.
MHC class I‐associated presentation of exogenous peptides is not only enhanced but also prolonged by linking with a C‐terminal Lys‐Asp‐Glu‐Leu endoplasmic reticulum retrieval signal (2004)

Vaccination with antigenic peptide-pulsed antigen-presenting cells (APC) represents an attractive approach for therapy for cancer and diseases caused by intracellular infections. It has been suggested that sufficient stable MHC/peptide complexes on the surface of APC might play an important role in the generation of antitumor and antiviral immunity in vivo. In this study, we observed that exogenous peptides that were artificially fused with an endoplasmic reticulum (ER) retrieval signal, a C-terminal Lys-Asp-Glu-Leu sequence, could be efficiently presented by intracellular MHC class I molecules in a TAP- and proteasome-independent, but brefeldin A-sensitive manner. The APC retained the capacity to display surface MHC/peptide complexes for a prolonged period. In addition, our results show that vaccination with DC bearing our fusion peptides induced greatly enhanced specific CTL response, and resulted in significant inhibition of tumor growth. Thus, the ER retrieval signal modification can be regarded as a novel method for targeting exogenous peptides into the intracellular MHC class I presentation pathway, and may improve the clinical utility of vaccines based on synthetic peptide pulsed DC.
ChemInform Abstract: SPALTUNGSRK. VON TRIORGANOZINN‐HYDRIDEN UND TRIORGANOSTANNYLALKALI‐VERBINDUNGEN MIT PHENYLAZID (1970)

Abstract Das Metallierungsprodukt (II) von Trimethylchlorstannan (I) reagiert unter Schutzgas mit Phenylazid zum Lithium‐(trimethylstannyl)‐phenylamid (III), das mit Trimethylchlorderivaten von Elementen der 4. Hauptgruppe zu (IV) umgesetzt werden kann.
Matériaux à base de composés phénoliques: de nouveaux défis (2011)

L'epuisement du petrole amene progressivement nos societes a utiliser la biomasse pour produire du carburant, de l'energie, et des intermediaires chimiques permettant de fabriquer nos biens de consommation. Cette contrainte peut egalement devenir, pour notre planete, une opportunite de moins polluer et de mieux prendre en compte les risques toxiques des substances qui sont mises sur le marche. On peut citer l'exemple du Bisphenol A, composant present dans de nombreuses matieres plastiques et recemment interdit pour la fabrication des biberons a cause de sa toxicite averee. C'est dans ce contexte qu'est ne le projet de substituer ce derive petrochimique par des polyphenols naturels dans la synthese des resines epoxy. Les resultats obtenusjusqu'ici sont prometteurs et ouvrent le champ des applications dans le domaine des materiaux.
Refractive index engineering inside silicon by infrared laser pulses of different pulse durations in the picosecond regime (2019)

International audience
Developmental bias in evolution: evolutionary accessibility of phenotypes in a model evo‐devo system (2008)

The success of the modern synthesis has resulted in forces of evolutionary change other than natural selection being marginalized. However, recent work has attempted to show the importance of non-selective influences in shaping organic form. One such force is developmental bias, in which phenotypes are differentially produced. We use a simulation model of neural development to explore questions of general interest about developmental systems. From this analysis, we find that the pattern of developmental bias varies strongly with the genotype even among phenotypically-neutral genotypes. In addition to this genotype-dependent developmental bias (local bias), an intrinsic bias exists in the developmental system (global bias). We also show that developmental bias varies among related genotypes that produce the same phenotype. Finally, we illustrate how a pattern of bias emerges from the manner in which mutations affect the regulatory structure of the wild-type genotype. These results suggest that developmental bias could have a strong influence on the direction of evolutionary modification.
Zinc metabolism in uremia. (1979)

Subnormal plasma zinc levels have been reported in uremic patients. However, detailed studies regarding zinc status in uremia are not available. Twenty-five patients with chronic renal failure (10 undergoing maintenance hemodialysis, five receiving chronic peritoneal dialysis, and 10 nondialyzed azotemic patients) had lower concentration of zinc in plasma, leukocytes, and hair as well as increased plasma ammonia and ribonuclease activity compared to age- and sex-matched controls (p less than 0.001). Similar biochemical changes have been reported in experimentally induced zinc deficiency in both animals and man, except that erythrocyte zinc concentration was elevated in these patients. High erythrocyte zinc concentration may be related to ineffective erythropoiesis in uremia. The results of this study suggest that abnormality in zinc metabolism occurs commonly in patients with chronic renal failure and that it develops prior to initiation of dialysis treatment.
Comparing the effects of internal waves, mode coupling, and change in bandwidth of a radiated signal on low mode energy propagation. (2009)

Wideband signal propagation modeling is carried out for the actual space-time configuration realized during the long-range ocean acoustic propagation experiment (LOAPEX) conducted in the North Pacific in 2004. In particular, the experiment used the Kauai transmit station that was located at a range of 2432 km from a vertical line array (VLA), M-sequence at 75 Hz, and a source depth of 800 m close to the depth of a sound-channel axis. Two sound speed profiles were utilized to get the smooth two-dimensional sound speed field. The first one was the profile obtained from the conductivity-temperature-depth (CTD) measurements at the Kauai station. The second sound speed profile from the VLA location was based on a CTD cast taken at station T50 (50 km from the VLA). To take into account the acoustic fluctuations due to internal waves, the buoyancy frequency profile based on LOAPEX CTD measurements made at station T50 was used. For simulations, 512 values of the horizontal wave number were utilized with the maximal mode number equal to 50. The low modes intensity received by the hydrophones close to the sound channel axis at the VLA is compared with the results of simulations. [Work supported by ONR and ONR Global.]
El Empleo de Internet en el Desarrollo de las Campañas de los Candidatos a la Presidencia de México (2006)

En estudios anteriores al realizado en 2005, la firma Select fue responsable de definir la metodologia y procesar la informacion que arrojaron los Estudios AMIPCI de habitos de los usuarios de Internet en Mexico. En cambio para el Estudio AMIPCI de habitos de los usuarios...
BLEEDING DISORDERS IN WOMEN (2011)

Women with a variety of bleeding disorders can have symptoms that result in significant morbidity and impact their quality of life.1 Increased absence from school or work and decreased qualify of life have been documented.2 Acute and chronic effects from iron deficiency anemia are seen. Iron deficiency is a problem in menstruating females worldwide. A study in Bursa, Turkey found anemia in 32.8% of 530 women ages 15-49 randomly selected from 6506 women.3 In women with bleeding disorders the prevalence is likely higher. In addition life threatening hemorrhage such as severe postpartum hemorrhage or rupture of hemorrhagic ovarian cysts can occur.
Optimization of second-phase sampling for multivariate soil mapping purposes: Case study from a wine region, Hungary (2018)

Over the last decades extensive work has been done on sampling optimization. Many of the related papers focused on the optimization of sampling for only one soil property. However, there is a necessity to prepare a sampling strategy which is optimized for multivariate digital soil mapping (DSM) purposes. The aim of our work was to elaborate a sampling optimization methodology for multivariate DSM considering the demands on economic efficiency. We presented and tested it through a real-time survey at Tokaj Wine Region, Hungary. The soil properties of interest were pH, soil organic matter (SOM), and calcium carbonate (CaCO3) content. The end-users defined the minimal requested precision for the DSM products (in terms of the average range of the 90% prediction interval), and priority areas on which more detailed survey was requested. We planned a two-phase soil survey based on regression kriging (RK). The results from the first-phase sampling were used to parameterize the second-phase sampling in which spatial simulated annealing (SSA) was applied. The spatially averaged range of the 90% prediction interval was the pre-survey quality measure which can be readily derived from the RK variance. The workflow can be summarized as follows: (1) rank the soil properties considering their spatial variabilities, and precision requests, (2) optimize the sampling design by SSA for the dominant soil property, (3) optimize the sampling by the invers application of SSA for the next soil property using the optimized design from the previous step, and (4) repeat the previous step until all soil property are being selected. In our case, SOM was the dominant property. According to the plot of the sample size vs. quality measure, the optimized design with 500 samples will ensure the minimal requested precision for the SOM map (i.e. 0.5%). In the next step, the optimal removal of those sampling points was targeted which have less information content. In the cases of pH and CaCO3, 100 and 175 could be removed from the 500 samples, and the remaining 400 and 325 samples will ensure the requested precision for the pH (i.e. 1.2) and CaCO3 (i.e. 5%) maps. We computed the relative sampling density on priority and non-priority areas for each sampling designs which showed that densities on priority areas were at least 1.5 times higher than on non-priority areas. We could conclude that the methodology is able to optimize the sampling design for multivariate DSM purposes considering numerous sampling constraints such as the predefined precision, priority areas, and economic efficiency.
Selling China (2002)

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Measurement of the cross section of e+e− → ηπ+π− at center-of-mass energies from 3.872 GeV to 4.700 GeV (2022)

A bstract Using data samples with an integrated luminosity of 19 fb − 1 at twenty-eight center-of-mass energies from 3.872 GeV to 4.700 GeV collected with the BESIII detector at the BEPCII electron-positron collider, the process e + e − → ηπ + π − and the intermediate process e + e − → ηρ 0 are studied for the first time. The Born cross sections are measured. No significant resonance structure is observed in the cross section lineshape.
Carbamoyl phosphate synthase-1: A marker of mitochondrial damage and depletion in the liver during sepsis (2006)

Circulating CPS-1 is a marker of mitochondrial damage and depletion in the liver during the subacute phase of CLP sepsis. From a mechanistic standpoint, mitochondrial depletion is not due to cell death but is apparently related to the removal of damaged mitochondria by lysosomes (i.e., autophagy), followed by repletion of mitochondrial populations. Further studies are needed to determine the clinical utility of CPS-1 as a marker of sepsis severity.
Multifunctional terahertz filters designed by shape resonance (2006)

Terahertz transmission filters have been manufactured by perforating metal surface structures with various geometric shapes which all support near-unity transmission at specific frequencies determined by geometric shape, symmetry, polarization, and lattice constant. Our results show that the structures specifically designed by the shape resonance are extremely versatile, dependable, easy to control and easy to make the multifunctional filters.
Oral lactobacilli in chronic periodontitis and periodontal health: species composition and antimicrobial activity (2005)

The composition of oral lactoflora in chronic periodontitis and healthy subjects differs, with a higher prevalence of homofermentative lactobacilli, particularly L. gasseri, in the latter group. Both homo- and heterofermentative oral lactobacilli suppress the growth of periodontal pathogens, but the antimicrobial properties are strain, species and origin specific.
A four-methylated mRNA signature-based risk score system predicts survival in patients with hepatocellular carcinoma (2019)

Evidence suggests that altered DNA methylation plays a causative role in the pathogenesis of various cancers, including hepatocellular carcinoma (HCC). Thus, methylated differently expressed genes (MDEGs) could potentially serve as biomarkers and therapeutic targets in HCC. In the present study, screening four genomics profiling datasets (GSE62232, GSE84402, GSE73003 and GSE57956) enabled us to identify a total of 148 MDEGs. A signature was then established based on the top four MDEGs (BRCA1, CAD, CDC20 and RBM8A). Taking clinical variables into consideration, we constructed a risk score system consisting of the four-MDEG signature and the patients' clinical features, which was predictive of prognosis in HCC. The prognostic value of the HCC risk score system was confirmed using TCGA HCC samples. The scores were then used to construct a nomogram, performance of which was evaluated using Harrel's concordance index (C-index) and a calibration curve. The signature-based nomogram for prediction of overall survival in HCC patients exhibited good performance and was superior to traditional staging systems (C-index: 0.676 vs 0.629, P< 0.05). We have thus established a novel risk score system that is predictive of prognosis and is a potentially useful guide for personalized treatment of HCC patients.
ChemInform Abstract: Counterion and Solvation Effects on the Conformations of the Radical Anions of 2,5‐Dicyanovinyl Substituted Furan and Thiophene. An EPR and ENDOR Study. (1993)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.