gebhart/patrepeval huggingface dataset:
Surface effects on the magnetic properties of ultrafine cobalt particles (1998)

Monodispersed nanoparticles of cobalt have been prepared by an original method using the decomposition under hydrogen of an organometallic precursor in the presence of a stabilizing polymer. Two colloids (Coll-I and Coll-II) have been obtained by changing the organometallic concentration in the polymer. Observation by high-resolution transmission electronic microscopy (HRTEM) showed Co particles well isolated and regularly dispersed in the polymer with a very narrow size distribution centered around 1.5 nm (Coll-I) and 2 nm (Coll-II) diameter. These particles are superparamagnetic above the blocking temperature 9 K (Coll-I) and 13.5 K (Coll-II). The particle size deduced from the analyses of the magnetic susceptibilities and magnetization curves are consistent with those measured by HRTEM. Magnetization at 5 K seems to saturate in fields up to 5 T leading to an enhanced mean magnetic moment per atom for both samples, where $〈{\ensuremath{\mu}}_{\mathrm{Co}}〉=1.94\ifmmode\pm\else\textpm\fi{}0.05$ ${\ensuremath{\mu}}_{B}$ for the smallest particles. High-field magnetization measurements, up to 35 T, increases nearly linearly with the applied field. This is equivalent to an increase of the mean magnetic moment with $〈{\ensuremath{\mu}}_{\mathrm{Co}}〉=2.1\ifmmode\pm\else\textpm\fi{}0.1$ ${\ensuremath{\mu}}_{B}$ at 35 T for the smallest particles. The effective magnetic anisotropies are found to be larger than that of the bulk materials and decrease with increasing particle size. This set of data allows us to conclude that the enhanced magnetization, its increase with applied magnetic field, and the enhanced effective magnetic anisotropy are associated with the large influence of the surface atoms and are more significant with decreasing size.
Exact Many‐sources Asymptotics (2007)

This chapter contains sections titled: Slotted time: results Slotted time: proofs Continuous time: results Continuous time: proofs
Hedgehogs and retinal ganglion cells: organizers of the mammalian retina (2004)

The mature vertebrate retina develops from a population of multipotential neural progenitor cells that give rise to all of the retinal neurons and one glial cell type. Retinal histogenesis is regulated, in part, by cell extrinsic cues. A growing number of studies now implicate signaling by members of the Hedgehog (Hh) family of morphogens in vertebrate retinal development. In this review we will discuss the role of Hh signals from retinal ganglion cells (RGCs), the projection neurons of the retina, on proliferation, differentiation and lamination in the neural retina.
Cloning and Mapping of Human Chromosome 6q26–q27 Deleted in B-Cell Non-Hodgkin Lymphoma and Multiple Tumor Types (1998)

Frequent deletions of the distal region on the long arm of chromosome 6 have been reported in multiple human tumors including B-cell non-Hodgkin lymphoma (B-NHL), suggesting the presence of one or more tumor suppressor genes (TSGs) at this locus. Previously, we identified a region of minimal molecular deletion at 6q25-q27 (RMD-1) in B-NHL cases. To facilitate positional cloning efforts to identify the RMD-1 TSG(s), a yeast artificial chromosome (YAC) contig consisting of 110 clones was constructed across 6q26-q27 by sequence-tagged site/probe content mapping. The contig integrates 79 ordered markers including restriction fragment length polymorphisms, minisatellites, microsatellites, YAC-insert termini, expressed sequence tags, and known genes. It spans 34 cM and has a minimal tiling path of approximately 12 clones, covering an estimated 9-14 Mb with nearly every marker on the map showing at least double linkage to its adjacent markers. Dual-color fluorescence in situ hybridization of selected marker pairs on normal pachytene chromosome 6 further confirmed the YAC-based mappings. Utilizing a loss of constitutional heterozygosity assay in the B-NHL tumor panel, 24 additional 6q26-q27 polymorphic markers (21 mapping to the contig) further defined RMD-1 between markers D6S186 proximally and D6S227 distally. The minimal tiling path of the B-NHL RMD-1 consists of approximately 8 YAC clones, providing a size estimate of 5-9 Mb. This interval contains, in their entirety, several smaller candidate TSG critical regions previously delimited in other tumor systems. The AF-6 gene, mapping within RMD-1, revealed no mutations in a small subset of B-NHL. The deletion and physical maps presented herein provide a framework for the identification of the gene(s) involved in B-NHL as well as other malignancies and diseases mapped to this region and provide the initial reagents for large-scale genomic sequencing.
Comments on "On the Implementation of Fully Differential Switched-Capacitor Ladder Filters (1986)

This letter is aimed at resolving an apparent contradiction regarding the preferred double integrator loop structure for high-frequency, fully-differential, switched-capacitor filters.
ChemInform Abstract: Versatile (3 + 2) Methylenecyclopentane Annulations of Unactivated and Electron‐Rich Olefins with ((Trimethylsilyl)methylene) cyclopropanedicarboxylates. (1994)

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.
Toward ultrahigh-flux photovoltaic concentration (2004)

We report experimental results with a miniature fiber-optic photovoltaic concentrator with (a) deliverable power density up to 104 suns (10 W/mm2), (b) solar cell efficiencies above 30%, (c) completely passive cooling, (d) uniform and individualized cell illumination, and (e) assembly from readily available components. Measurements include the sensitivity of the conversion efficiency of tandem III–V cells to (1) power input, (2) flux distribution, and (3) the modified spectrum from the fiber-optic concentrators. Our results augur favorably for the feasibility of such designs at concentration levels as high as thousands of suns.
Influence of recording parameters on particle field measurement by digital holographic microscopy：a numerical investigation (2013)

数字显微全息技术由于具有三维、非接触和实时测量微小空间内流场的能力, 已引起了国内外学者的广泛关注. 利用数字显微全息方法测量微通道流场时, 记录距离、颗粒尺寸、颗粒浓度、入射光波长、CCD分辨率等参数会对颗粒重建结果产生重要影响. 为了评估颗粒浓度和样本空间深度对重建结果的影响, 本文开展了数值模拟研究. 采用基于洛伦兹-米散射理论的程序产生不同浓度的颗粒全息图, 用小波变换重建算法对其进行重建. 结果表明: 在样本空间深度为24 μm 时, 颗粒浓度ns在3.44×105 mm-3–13.77×105 mm-3 范围内时, 颗粒重建率Ep随着颗粒浓度ns 的增大而迅速减小, 在13.77×105 mm-3–55.08×105 mm-3范围内时, 颗粒重建率Ep 随颗粒浓度ns增大而缓慢减少. 在颗粒浓度ns (13.77×105 mm-3) 保持不变时, 颗粒重建率Ep与样本空间深度满足单调递减的线性关系. 当阴影密度不变时, 重建率的变化呈现一定的规律性:当深度L较小时, 样本空间深度对颗粒重建的影响要比颗粒浓度的影响大; 当深度L较大时, 颗粒浓度对颗粒重建的影响较大.
Budd-Chiari syndrome with extensive portal thrombosis: treatment with Senning's procedure. (1994)

A patient with Budd-Chiari syndrome and associated extensive portal thrombosis, precluding any kind of portosystemic shunt, was treated with Senning's procedure. This technique, which includes dorsocranial hepatic resection and direct hepatoatrial anastomosis under total vascular exclusion of the liver, resulted in prompt recovery from acute hepatic failure and esophageal bleeding. Peroperatively, the hemodynamic status was secured with a venous cavo-caval bypass. This observation suggests that Senning's procedure is strongly indicated in the case of Budd-Chiari syndrome with extensive portal thrombosis.
Bacteriophages<i>of Erwinia carotovora</i>and<i>Erwinia ananas</i>Isolated from Freshwater Lakes. (1995)

Bacteriophages for Erwinia carotovora subsp. carotovora and for E. ananas were readily isolated from freshwater lakes in Florida and Texas. Approximately 15% of enrichment cultures with 48 strains of E. carotovora yielded phage. Nineteen of 22 phages had distinct host ranges among the 62 strains and up to 10 strains were susceptible to a single phage. Among strains representing 24 serotypes, 12 of 15 phages caused plaques in lawns of 16 serotypes. Each of 13 enrichment cultures with strains of E. ananas yielded at least one phage and five distinct host range patterns emerged among host strains and phage isolates. The number of susceptible hosts for each phage ranged from one to six.
1er thème : Eaux souterraines et prévision (1979)

Résumé. - La prévision des variations de niveaux piézométriques des aquifères de type crayeux, ou des débits aux exutoires des aquifères karstiques est devenue classique, différents modèles de simulation étant mis au point. De ces prévisions on peut passer facilement à la prévision du débit des cours d'eau influencés par les nappes ou au débit des cours d'eau à alimentation principale karstique en période d'étiage. Pour les débits de crue, on doit tenir compte de la variété et de la complexité des relations cours d'eau subaériens - aquifères karstiques. Diverses méthodes d'approche sont proposées pour intégrer le jeu des aquifères superficiels, la difficulté principale résultant de l'interférence avec l'évapotranspiration.
Leg Deformities: Inability to Increase Severity by Increasing Body Weight of Chicks and Poults (1984)

Five 4-week experiments were conducted to determine the effects of body weight on the severity of leg deformities in broiler chicks and turkey poults reared on raised wire floors. In order to make the influence of body weight independent of genetic, environmental, and nutritional effects, increasing body weight was achieved by harnessing steel weights on the backs of poults and chicks. In the first experiment, 3-day-old male and female chicks were harnessed with 0-, 1-, 2-, or 3-g weights (nine chicks per weight load). Weights were changed every 3 to 4 days until 4 weeks of age such that the artificial weight averaged 0, 3, 4.5, or 8.5% of their body weight. In Experiments 2 and 3, three replicates of 10 female chicks were assigned to isocaloric diets containing 18, 21, or 24% crude protein. Five chicks in each treatment and replicate were harnessed at 3 days of age with weights averaging approximately 13% of their body weight. Weights were changed weekly. Experiments 4 and 5 were designed similar to Experiments 2 and 3 except that male and female turkey poults were fed 22, 25, or 28% dietary crude protein and were harnessed with weights equal to about 8 to 10% of their body weight. Body weights of the birds were recorded weekly.(ABSTRACT TRUNCATED AT 250 WORDS)
Operating system support for improving data locality on CC-NUMA compute servers (1996)

The dominant architecture for the next generation of shared-memory multiprocessors is CC-NUMA (cache-coherent non-uniform memory architecture). These machines are attractive as compute servers because they provide transparent access to local and remote memory. However, the access latency to remote memory is 3 to 5 times the latency to local memory. CC-NOW machines provide the benefits of cache coherence to networks of workstations, at the cost of even higher remote access latency. Given the large remote access latencies of these architectures, data locality is potentially the most important performance issue. Using realistic workloads, we study the performance improvements provided by OS supported dynamic page migration and replication. Analyzing our kernel-based implementation, we provide a detailed breakdown of the costs. We show that sampling of cache misses can be used to reduce cost without compromising performance, and that TLB misses may not be a consistent approximation for cache misses. Finally, our experiments show that dynamic page migration and replication can substantially increase application performance, as much as 30%, and reduce contention for resources in the NUMA memory system.
Effect of daily administration period of natural alpha-interferon in patients with chronic hepatitis C. (1996)

Prolonged daily administration did not improve the responses to interferon therapy when the total dose was the same.
Spatially continuous model of the broadband time-of-arrival in the head-related transfer functions (2013)

Head-related transfer functions (HRTFs) describe the filtering of the incoming sound by the human anatomy. They contain the so-called broadband time-of-arrivals (TOAs), which interaural differences yield the well-known interaural time differences used to estimate the lateral position of sound sources by the human auditory system. The TOAs are essential for a time-synchronous binaural rendering of multiple virtual sound sources or for interpolation of the timing information in an existing HRTF set. Estimation of the TOA is usually done separately for each spatial direction and is thus prone to errors and directional outliers. A method for a robust estimation of spatially continuous TOA function from a set of listener-specific HRTFs is presented. The method relies on a geometric model of the HRTF-measurement setup represented by parameters like head position, radius, and ear position. The model parameters were fit to HRTFs of a sphere numerically calculated under various conditions, and to measured HRTFs of 160 listeners. The resulting model parameters and TOA functions corresponded well with the measurement geometry and manually derived TOAs, respectively. The model parameters were further compared to those resulting from a simplified model which assumes the listener being in the center of the HRTF-measurement setup, demonstrating the impact of the usually neglected aspect of listener position on the HRTF timing quality.
Transient Gene Transfer of Non-ELR Chemokines to Rodent Lung Induces Mononuclear Cell Accumulation and Activation (1999)

The in vivo function of the CXC chemokines interferon-inducible protein-10 (IP-10) and monokine induced by gamma (MIG) was examined using replication-deficient adenoviral vectors expressing human IP-10 (AdIP-10) or murine MIG (AdMIG). Intratracheal and intranasal administration of AdIP-10 or AdMIG into rats and mice produced transient chemokine overexpression from the bronchial epithelium. IP-10 concentrations in the bronchoalveolar lavage fluid (BAL) of AdIP-10-treated animals showed peak expression (>2 ng/ml) 24-48 h after AdIP-10 administration. Dramatic transient increases in BAL cellularity (macrophages, monocytes, lymphocytes, and neutrophils) were observed in AdIP-10-treated and AdMIG-treated animals, and histologic examination of AdIP-10-treated lungs revealed transient infiltrations of mononuclear cells primarily localized around the bronchus and extending throughout the lung parenchyma. However, in immunocomprised SCID mice, only increases in natural killer cell populations were detected in BAL following AdIP-10 intranasal administration, indicating that monocyte/macrophage and neutrophil accumulation was likely the result of factors released from activated lymphocytes.
Design of steels for high speed machining (1999)

Historical analysis of metal cutting shows that metal removal rates have been increasing in the course of the century, predicated by the advancement in tool materials but the steel design has lagged behind. This paper examines the mechanisms of chip formation and tool wear as a function of cutting speed in metal cutting. Chemical wear is identified as the dominant mechanism of tool wear at high cutting speeds caused by temperature rise due to shear localisation in the primary and secondary shear zones of chip. Shear localisation in the primary shear zone is shown to be influenced by both microstructural parameters, i.e. matrix hardening and second phase particles, and metal cutting variables, i.e. cutting speed (strain rate) and feed (pressure). Shear localisation in the secondary shear zone is caused by the tribological conditions of seizure at the tool/chip interface. Chemical crater wear is caused by the dissolution of tool into the workpiece (chip) by diffusion mechanism and can be prevented by suppressing the tribological condition of seizure. The design of steel for high speed machining is based on engineering glassy oxide inclusions in steel, which are designed to form a viscous layer in situ at the tool/chip interface at high cutting speeds. The viscous layer lubricates the tool/chip interface and prevents the occurrence of seizure, thereby suppressing chemical crater wear. In comparison with the large volume fraction of inclusions required for promoting ductile fracture at low cutting speeds, the amount of inclusions required for lubricating the tool/chip interface is very small and is in the range that is typical of clean steel. Thermodynamic modelling is shown to be a powerful tool to engineer glassy oxide inclusions in steel
X‐ray phase contrast imaging of the breast: Analysis of tissue simulating materials<sup>a)</sup> (2013)

A breast phantom comprising A-150 plastic to represent the skin, commercially available adipose and fibroglandular tissue-equivalent formulations to represent adipose and fibroglandular tissue, respectively, was found to be best suited for x-ray phase-sensitive imaging of the breast. Calcium carbonate or aluminum can be used to represent microcalcifications.
Thoracic gas volume in rabbits by low-frequency ambient pressure changes (1988)

R. Peslin et al. measured thoracic gas volume (TGV) in adults using a new method employing low-frequency ambient pressure changes (APC) (J. Appl. Physiol. 62: 359-363, 1987). We extended that methodology and then tested the hypothesis that this technique was applicable to small mammals. TGV [at functional residual capacity (FRC)] by APC and by conventional Boyle's law was compared in 12 rabbits. The rabbits were anesthetized, tracheostomized, intubated, and placed in a pressure plethysmograph. Although in the method of Peslin et al. box pressure was oscillated at a single frequency, in our extension box pressure was oscillated simultaneously at two frequencies (0.1 and 0.2 Hz). Flow at the airway opening consisted of rapid events due to spontaneous breathing, superposed on slower events due to the alveolar gas compression. The slower events were analyzed to yield alveolar gas compliance and, by Boyle's law, FRC. FRC by APC was highly correlated to FRC by conventional plethysmography (r = 0.85). Compared with the methodology of Peslin et al., our extension relaxes a key limitation and yields systematically higher estimates of FRC. We conclude that this method is applicable to small mammals, despite an inherently more compliant chest wall, and that the methodological extension improves the estimate of FRC.
Solid Oxide Fuel Cells: Microstructure of Nanoscaled La<sub>0.6</sub>Sr<sub>0.4</sub>CoO<sub>3‐<i>δ</i></sub> Cathodes for Intermediate‐Temperature Solid Oxide Fuel Cells (Adv. Energy Mater. 2/2011) (2011)

Abstract Nanocrystalline La 1‐ x Sr x CoO 3‐ δ (LSC) thin films with a nominal Sr‐content of x = 0.4 were deposited on Ce 0.9 Gd 0.1 O 1.95 electrolyte substrates using a low temperature sol‐gel process. The structural and chemical properties of the LSC thin films were studied after thermal treatment, which included a calcination step and a variable, extended annealing time at 700 °C or 800 °C. Transmission electron microscopy combined with selected‐area electron diffraction, energy‐dispersive X‐ray spectrometry, and scanning transmission electron microscopy tomography was applied for the investigation of grain size, porosity, microstructure, and analysis of the local chemical composition and element distribution on the nanoscale. The area specific resistance ( ASR ) values of the thin film LSC cathodes, which include the lowest ASR value reported so far ( ASR chem = 0.023 Ωcm 2 at 600 °C) can be interpreted on the basis of the structural and chemical characterization.
Host target modification as a strategy to counter pathogen hijacking of the jasmonate hormone receptor (2015)

In the past decade, characterization of the host targets of pathogen virulence factors took a center stage in the study of pathogenesis and disease susceptibility in plants and humans. However, the impressive knowledge of host targets has not been broadly exploited to inhibit pathogen infection. Here, we show that host target modification could be a promising new approach to "protect" the disease-vulnerable components of plants. In particular, recent studies have identified the plant hormone jasmonate (JA) receptor as one of the common targets of virulence factors from highly evolved biotrophic/hemibiotrophic pathogens. Strains of the bacterial pathogen Pseudomonas syringae, for example, produce proteinaceous effectors, as well as a JA-mimicking toxin, coronatine (COR), to activate JA signaling as a mechanism to promote disease susceptibility. Guided by the crystal structure of the JA receptor and evolutionary clues, we succeeded in modifying the JA receptor to allow for sufficient endogenous JA signaling but greatly reduced sensitivity to COR. Transgenic Arabidopsis expressing this modified receptor not only are fertile and maintain a high level of insect defense, but also gain the ability to resist COR-producing pathogens Pseudomonas syringae pv. tomato and P. syringae pv. maculicola. Our results provide a proof-of-concept demonstration that host target modification can be a promising new approach to prevent the virulence action of highly evolved pathogens.
Transacetalation of Methyl 9,9-Dimethoxynonanoate (1964)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTransacetalation of Methyl 9,9-DimethoxynonanoateE. H. Pryde, D. J. Moore, H. M. Teeter, and J. C. CowanCite this: J. Org. Chem. 1964, 29, 7, 2083–2085Publication Date (Print):July 1, 1964Publication History Published online1 May 2002Published inissue 1 July 1964https://pubs.acs.org/doi/10.1021/jo01030a550https://doi.org/10.1021/jo01030a550research-articleACS PublicationsRequest reuse permissionsArticle Views76Altmetric-Citations14LEARN 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
Singular Behavior of Eigenstates in Anderson’s Model of Localization (2012)

We observe an apparent singularity in the electronic properties of the Anderson model of localization with bounded diagonal disorder, which is clearly distinct from the well-established mobility edge (localization-delocalization transition) that occurs in dimensions d > 2. We present results of numerical calculations for Anderson's original uniform (box) distribution of on-site disorder in dimensions d = 1, 2, and 3. To establish this hitherto unreported behavior, and to understand its evolution with disorder, we contrast the behavior of two different measures of the localization length of the electronic wave functions-the averaged inverse participation ratio and the Lyapunov exponent. Our data suggest that Anderson's model exhibits richer behavior than has been established so far.
A porous silicon-based ionomer-free membrane - electrode assembly for miniature fuel cells (2006)

International audience
Transsphenoidal Removal of Retroclival Chondroma with Pituitary Transposition Manifesting as Repeated Subarachnoid Hemorrhage: A Case Report (2019)

Intracranial chondroma sometimes manifests as intracranial hemorrhage and grows comparatively rapidly in a short period despite the benign histologic features. A long and careful follow-up period is essential.