gebhart/patrepeval huggingface dataset:
ChemInform Abstract: Layered Li[Ni<sub>x</sub>Co<sub>1‐2x</sub>Mn<sub>x</sub>]O<sub>2</sub> Cathode Materials for Lithium‐Ion Batteries. (2002)

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.
Reaction of organolithium reagents with lactim ethers: preparation of cyclic 2-alkyl imines or 2,2-dialkyl amines (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction of organolithium reagents with lactim ethers: preparation of cyclic 2-alkyl imines or 2,2-dialkyl aminesCharles A. Zezza, Michael B. Smith, Betsy A. Ross, Akwasi Arhin, and Patricia L. E. CroninCite this: J. Org. Chem. 1984, 49, 23, 4397–4399Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November 1984https://pubs.acs.org/doi/10.1021/jo00197a013https://doi.org/10.1021/jo00197a013research-articleACS PublicationsRequest reuse permissionsArticle Views862Altmetric-Citations24LEARN 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-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Dark Skin Decreases the Accuracy of Pulse Oximeters at Low Oxygen Saturation: The Effects of Oximeter Probe Type and Gender (2007)

Multivariate analysis indicated that Sao2 level, sensor type, skin color, and gender were predictive of errors in Spo2 estimates at low Sao2 levels. The data suggest that clinically important bias should be considered when monitoring patients with saturations below 80%, especially those with darkly pigmented skin; but further study is needed to confirm these observations in the relevant populations.
Maturation-dependent durability of spontaneous cartilage repair in rabbit knee joint (1999)

The spontaneous healing of osteochondral defects in the knee joints of immature rabbits within the first 12 weeks after surgery showed a faster filling and earlier tissue specialization than in adult animals. The purpose of the present study was to investigate whether the better short-term quality of spontaneous repairs in immature animals lasted over a period of 48 weeks. A full-thickness osteochondral defect was created on the medial femoral condyle in both knees of 10 young, 10 adolescent, and 10 adult rabbits. Equal numbers of animals were evaluated after 24 and 48 weeks. At both time intervals, bonding to adjacent cartilage and proteoglycan content of the matrix were better in the repairs of young than in adult animals. Repairs in the former had cellularity similar to the adjacent cartilage and were composed of 90% hyaline-like cartilage, which did not decrease with time. In contrast, repairs in older animals formed less hyaline-like cartilage and had a lower cellularity than the adjacent cartilage. However, the surface of the repaired tissue was similarly disrupted in all age groups, and the mechanical properties remained inferior to adjacent or normal cartilage. Repairs in older animals showed signs of degeneration with time. The initial better repair quality in a young, growing animal remained up to 48 weeks when the animal had already reached maturity, indicating that successful initial promotion of cartilage repair may even lead to better results in the long term. However, it has to be pointed out that the morphologically good repairs with hyaline-like cartilage appearance, normal cellularity, and durability of up to 48 weeks were unable to reestablish and maintain a cartilage-like mechanical function.
Alternative Promoters Influence Alternative Splicing at the Genomic Level (2008)

Thus at the genomic level, alternative promoters are positively correlated with alternative splicing.
Regulation of the iron uptake genes in Pseudomonas fluorescens M114 by pseudobactin M114: the pbrA sigma factor gene does not mediate the siderophore regulatory response (1996)

The iron-regulated PbrA sigma factor dictates the production of the siderophore, pseudobactin Ml 14, and its cognate outer membrane receptor, PbuA, in Pseudomonas fluorescens M114. However, the siderophore molecule also has a role in regulating the expression of the siderophore biosynthetic and siderophore receptor genes in P. fluorescens M114. This is based on the fact that β-galactosidase levels from lacZ fusions of M114 siderophore promoters (biosynthetic and receptor) were reduced in M114 siderophore biosynthetic mutants compared to wild-type M114. Expression of both promoters was increased by the addition of pseudobactin M114 to the growth medium. This effect was widespread and applicable to all but one of the siderophore negative strains of M114 tested. Furthermore, it was demonstrated that transcription of the pbrA sigma factor gene was not reduced in the siderophore biosynthetic mutants. This excludes the possibility that reduced expression of the siderophore biosynthetic and receptor promoters in the siderophore biosynthetic mutants is mediated at the level of expression of the pbrA gene itself. In addition, it was noted that the siderophore regulated response was applicable to promoters with and without the DNA sequence motif, (G/C)CTAAATCCC, which is required for iron-regulated expression of some pseudomonad promoters.
Face Pose Estimation Method Based on 3D Model (2011)

A method is proposed for 3D face pose estimation.The face pose are determined by estimating the homography matrix between the face model plane and the image plane.The M-estimator is employed to further refine the results.The main characteristic of the method is that it is simple to implement,does not need to calibrate the projective camera beforehand and can recover the face pose satisfactorily under a wide degree of head motion.Both simulation and real data results show it is effective.
CHAMELEON SHARED MEMORY: IMPLEMENTING A THIN ARCHITECTURAL LAYER TO SUPPORT SHARED MEMORY ACROSS MULTIPLE BLADES (2007)

Highly integrated SMPs can execute a broad range of workloads, but are expensive and monolithic. It is difficult incrementally to add processing power to a highly integrated SMP, which requires the system to be large enough to handle all possible workloads. This can be unnecessarily expensive and wasteful when executing tasks that do not require such computational power. Clusters are cheap and modular, but cannot execute the same workloads, and are more difficult to manage. Although it is easier incrementally to add more processors to a cluster, communication time between processors is much larger, and running applications with high interprocessor communication is not feasible. Clusters must use message passing instead of shared memory, and managing a large cluster can be difficult, due to the extensive system administration required for many individual systems. We present a system that gives us the best of both worlds: modular and scalable systems that are easy to manage and can execute a broad range of applications.
Instrument With Variable Beam Splitter For Measuring Contrast Sensitivity (1963)

Supported by the Göteborg Medical Society, the Swedish Medical Society, the Swedish Board for Agricultural Research (SJFR) grant 50.0444/98 and by University of Göteborg.
Biomimetic broadband antireflection gratings on solar-grade multicrystalline silicon wafers (2011)

We report a simple and scalable bottom-up technique for fabricating broadband antireflection gratings on solar-grade multicrystalline silicon (mc-Si) wafers. A Langmuir-Blodgett process is developed to assemble close-packed silica microspheres on rough mc-Si substrates. Subwavelength moth-eye pillars can then be patterned on mc-Si by using the silica microspheres as structural template. Hemispherical reflectance measurements show that the resulting mc-Si gratings exhibit near zero reflection for a wide range of wavelengths. Both experimental results and theoretical prediction using a rigorous coupled-wave analysis model show that close-packed moth-eye arrays exhibit better antireflection performance than non-close-packed arrays due to a smoother refractive index gradient.
Shape Control of CdSe Nanocrystals with Zinc Blende Structure (2009)

Systematically shape-controlled synthesis of inorganic nanocrystals has attracted increasing attention recently for both fundamental and technological interest. The shape evolution of CdSe nanocrystals with wurtzite structure in a unified method has been previously well studied, while the study on shape evolution of CdSe nanocrystals with zinc blende structure still remains challenging. Here, we demonstrate a systematic shape variation of zinc blende CdSe nanocrystals in a modified organometallic approach, in which distinct shapes of cube-shaped, sphere-shaped, tetrahedron-shaped, and branched CdSe nanocrystals with high yield and good uniformity are obtained. The crucial factor that influences the shape-controlled process is the reactive temperature. This wide variation of shapes provides important information about the growth of CdSe nanocrystals, and it can also help in the shape-controlled synthesis of other nanocrystals that are bound with uniform crystal planes.
Comparison of Two Overmodulation Strategies in an Indirect Matrix Converter (2012)

This paper discusses two overmodulation controls, namely, square wave and trapezoidal, in the indirect matrix converter (IMC) for motor drive application. The differences between these two modulations are analyzed based on the output-input voltage transfer ratio (VTR), the efficiency, and the current total harmonic distortions under two load conditions. Moreover, the performance is then improved by implementing four-step commutation methods in the primary side of the IMC. The validity of the proposed methods will be demonstrated through simulation and experimentally. The experimental results show that the VTR can be improved from 0.866 to 0.97 in the square wave modulation and 0.92 for the trapezoidal wave modulation in an induction motor drive system.
A Novel Broadband Circularly Polarized Monopole Antenna Based on C-Shaped Radiator (2016)

The design and implementation of a compact monopole antenna with broadband circular polarization is presented in this letter. The proposed antenna consists of a simple C-shaped patch and a modified ground plane with the overall size of 0.33 λ × 0.37 λ. By properly embedding a slit in the C-shaped patch and improving the ground plane with two triangular stubs, the measured broadband 3-dB axial-ratio bandwidth of 104.7% (2.05–6.55 GHz) is obtained, while the measured impedance bandwidth of 106.3% (2.25–7.35 GHz), defined by –10-dB return loss, is achieved. The performance for different parameters is analyzed. The proposed antenna is a good candidate for the application of various wireless communication systems.
Detection and Measurement of Urinary 2-Hydroxyestradiol 17-Sulfate, a Potential Placental Antioxidant during Pregnancy (2000)

RIA can be used to measure urinary 2-OH-ES during pregnancy. The increase in urinary 2-OH-ES during gestation, its decrease after delivery, and the lower values in preeclampsia are consistent with a role of 2-OH-ES as a placental antioxidant.
Auto Ignition and Combustion of DME and n-Butane/Air Mixtures in Homogeneous Charge Compression Ignition Engine. (1998)

Auto ignition, which is observed in Homogeneous and Premixed Charge Compression Ignition engine, expand the lean flammability limit of engine operation and realize stable ignition and combustion at a range of ultra-lean conditions, where NOx emissions are reduced. In this study, we made a basic research on mechanism of auto ignition and combustion with various premixed gas temperature and compression speed on n-butane and dimethyl ether (DME). And we observed singularity phenomena appearing in auto ignition at low temperature of n-butane/air mixture in Homogeneous Charge Compression Ignition engine.
Steroidogenic Factor-1 Contains a Carboxy-Terminal Transcriptional Activation Domain That Interacts with Steroid Receptor Coactivator-1 (1998)

The orphan nuclear receptor, steroidogenic factor-1 (SF-1), plays an important role in the development of the adrenal gland and in sexual differentiation. SF-1 regulates the transcription of variety of genes, including several steroidogenic enzymes, Müllerian inhibiting substance, and gonadotropin genes. In this report, we sought to identify domains in SF-1 that are required for transactivation and to determine whether SF-1 interacts with a subset of known coactivators. Natural variants of the FTZ-F1 locus include embryonal long terminal repeat-binding protein (ELP)-1, ELP-2, and SF-1, which share the DNA-binding domain. Analyses of the transcriptional activity of these variants revealed that the activity of ELP-2 and SF-1 was much greater than ELP-1, which contains a distinct carboxy terminus. Further studies were performed using GAL4-SF-1 fusion proteins that were constructed by replacement of the zinc finger region and FTZ-F1 box of SF-1 with the DNA-binding domain of GAL4. Elimination of the putative AF-2 domain at the carboxy terminus of GAL4-SF-1 proteins resulted in a complete loss of transactivation. Several lines of evidence demonstrated that SF-1 interacts with steroid receptor coactivator-1 (SRC-1). Full-length SRC-1 enhanced GAL4-SF-1-mediated transactivation, whereas a dominant negative form of SRC-1, consisting of its interaction domain alone, inhibited the activity of GAL4-SF-1. In mammalian two-hybrid assays, fusion of the VP16 activation domain to the interaction domain of SRC-1 confirmed the interaction between SRC-1 and GAL4-SF-1 and demonstrated that the AF-2 domain is required for interaction with SRC-1. Furthermore, SRC-1, together with the cAMP responsive element binding protein (CBP) or a closely related factor, p300, synergistically enhanced transcriptional activity of GAL4-SF-1. We conclude that the carboxy-terminal AF-2 region of SF-1 functions as an activation domain and that SRC-1 and CBP/p300 are components of the coactivator complex with SF-1.
Mental development for robots (2003)

It is desirable for humans to control robots through high-level commands, and it is tedious for humans to issue detailed commands to direct actions for every fraction of a second. However, it is extremely challenging for humans to program a robot to execute such high-level commands in unknown human environments. How can we address this fundamental challenge in robotics? Can, a robot develop its skills autonomously as a human infant or a higher animal does? What is the fundamental difference between the paradigm of mental development and that of traditional engineering? The paper consists mainly of short notes for a tutorial.
Redirection of T-Cell Effector Functions for Cancer Therapy: Bispecific Antibodies and Chimeric Antigen Receptors (2013)

T cells are the most potent cells of the immune system; however, they fail in the immunosurveillance of tumors. In previous decades, scientists began studying methods to take advantage of T-cell potency in cancer therapy by redirecting them against tumors independently from the T-cell receptor-defined specificity. Among different approaches, the most promising are the use of bispecific antibodies and T-cell engineering to create chimeric antigen receptors. Bispecific antibodies, by simultaneously recognizing target antigen and an activating receptor on the surface of an immune effector cell, offer an opportunity to redirect immune effector cells to kill cancer cells. The other approach is the generation of chimeric antigen receptors by fusing extracellular antibodies to intracellular signaling domains. Chimeric antigen receptor-engineered T cells are able to specifically kill tumor cells in a MHC-independent way. The efficacy of these reagents in different formats has been clinically validated and will be presented here.
Vegetation Indices: Advances Made in Biomass Estimation and Vegetation Monitoring in the Last 30 Years (2006)

Abstract During the last 30 years Vegetation Indices (VI) have been extensively used for tracing and monitoring vegetation conditions, such as health, growth levels, production, water and nutrients stress, etc. In this paper the characteristics of over 20 VIs based on the VNIR spectrum are described in order to provide the reader with adequate material to form a picture of their nature and purpose. It is not, though, a review article due to the fact that a huge volume of work exists all over the world and a simple lining up of the related papers would not contribute to an understanding of the usefulness of VIs. A limited number of review work is included, together with research results from various operational and research applications of VI for wheat damage assessment in Northern Greece.
Aerodynamic characteristics of a flexible membrane wing (1984)

The results of experimental studies of the aerodynamic characteristics of single-surfac e membrane wings constructed of inextensible flexible material are described and compared with theory. The experiments included measurement of the lift and drag characteristics of semispan wing models of three different planforms (triangular, parabolic, and elliptical). The wing surfaces were constructed of 2- and 4-mil stainless steel shim stock attached to a streamline leading-edge spar. This very thin metal membrane is flexible and adjusts its shape in response to the airflow over the wing surface. The experimental apparatus permitted variation of the camber and twist distribution of the wing. A unique method of describing the geometry of the wing is presented and used to correlate the experimental results and to compare experiment with theory. The experimental results agree well with lifting line theory below stall using the method presented for determining the geometric shape of the wing. The wing with the parabolic planform exhibited the best aerodynamic characteristics compared to the triangular and elliptical planforms. The maximum lift coefficients and lift-to-drag ratios measured are comparable to conventional rigid wings. Various dynamic phenomena encountered during the experiments are described.
Characterization of three transcriptional repressor sites within the 3′ untranslated region of the rat serine protease inhibitor 2.3 gene (1998)

The activity of the rat serine protease inhibitor 2.3 gene (spi 2.3) is controlled by several positive promoter elements [Simar-Blanchet, A.-E., Paul, C., Mercier, L. & Le Cam, A. (1996) Eur. J. Biochem. 236, 638-648] and a negative element located in the 3' untranslated gene region (3' UTR) [Le Cam, A. & Legraverend, C. (1996) Eur. J. Biochem. 231, 620-627]. In the present studies, we dissected the 348-bp spi 2.3 3' UTR silencer to precisely define repressor sites and look for specifically interacting proteins. Three short elements referred to as A (nucleotides 1751-1776 in the cDNA), B (nucleotides 1812-1827) and C (nucleotides 1958-1974) sites repressed transcription from the homologous spi 2.3 promoter as well as from a heterologous minimal promoter containing the spi GAGA box enhancer. All three sites harbor a (TTTC) motif whose mutation affected silencer activity that was also dependent on flanking sequences. Those sites share the (TTTC) motif and a CCAAT/enhancer-binding-protein(C/EBP)-binding site with a fatty-acid-binding-protein gene promoter element shown to interact specifically with a transcriptional repressor [He, G. P., Muise, A., Wu Li, A. & Ro, H.-S. (1995) Nature 378, 92-96]. This repressor is however unlikely to mediate spi 2.3 3' UTR silencer action since it was not detected in rat hepatocytes. In vitro footprinting of the spi 2.3 3' UTR silencer region revealed a strong interaction with liver nuclear proteins. Among the six identified footprints, three of them (F-II, FIII and F-IV) bound C/EBPs and mapped in regions harboring the repressor function. Binding of C/EBPs to all three spi 2.3 3' UTR repressor sites, although rather weak, was confirmed by electrophoretic mobility shift assays that otherwise failed to reveal specific interactions with other liver nuclear proteins in vitro. However, none of the most largely liver expressed C/EBP species (i.e. alpha, beta and delta) activated the spi 2.3 3' UTR silencer function in NIH 3T3 cells, suggesting that binding of those transcription factors did not mediate the transcriptional repression.
Influence of Particle Size on the Electrical Resistivity of Compacted Mixtures of Polymeric and Metallic Powders (1971)

Powder samples of high-density polyethylene and nickel of particle sizes Rp and Rm, respectively, were mixed and compacted at room temperature under a pressure of 1000 kg/cm2. Microscopic examination of polished sections of the compact, by reflected light, showed that the metallic particles did not penetrate the polymeric particles and that this resulted in a segregated distribution of metallic particles at high ratios of Rp/Rm. The electrical resistivity of the compacts had a value of 1016 Ω cm unless the composition of metal reached a critical value, beyond which the resistivity decreased markedly by as much as twenty orders-of-magnitude. This critical composition was found to decrease with an increase in the ratio Rp/Rm throughout the range studied of from 1 to 16. The general features of the dependence of electrical resistivity on composition of metal could be rationalized by reference to a model according to which small particles of nickel form a monolayer on the large particles of polymer in the mixture of powders. This arrangement was supposed to be but little changed during compaction and to result in a segregated distribution of metal which can be visualized as approximating to the accommodation of metallic particles on three mutually perpendicular sets of lattice planes. The critical composition for a sudden decrease in electrical resistivity was assumed to correspond to the first nonzero probability for infinitely long chains of contiguously occupied lattice sites.