gebhart/patrepeval huggingface dataset:
Study of thermal stability of distributed Bragg reflectors based on epitaxial rare-earth oxide and silicon heterostructures (2014)

Thermal stability of rare-earth oxide/silicon multilayer heterostructure-based distributed Bragg reflectors under typical metal organic chemical vapor deposition process temperatures with an ambience of typical process gases was studied. Gadolinium oxide or erbium oxide based two period (¼λ oxide, ¾λSi) blue light (λ = 450 nm) mirrors with Si layer on the top were annealed in H2, N2, and H2 + NH3 gases for 20 min at 1015 °C in a metal organic chemical vapor deposition chamber. Changes in the structure were analyzed using x-ray diffraction and transmission electron microscopy. Reflectivity measurements were used for evaluation of optical properties of the reflectors before and after annealing. Chemical reaction between gadolinium oxide and silicon are revealed by reduction of reflectivity of Gd2O3/Si based distributed Bragg's reflector and GdSi2-x attributed peaks detected by x-ray diffraction. No major changes were detected in the Er2O3/Si heterostructure-based reflector, indicating good chemical and crystal stability of erbium oxide.
Comparison of the neuropoietic activity of gene-modified versus parental mesenchymal stromal cells and the identification of soluble and extracellular matrix-related neuropoietic mediators (2014)

These data demonstrate that SB623 cells tend to support neural cell growth more effectively than their parental MSCs and identify both soluble and insoluble mediators responsible, at least in part, for enhanced neuropoietic potency of SB623. The neuropoiesis assay is a useful tool for identifying beneficial factors produced by MSCs and their derivatives.
Design, Fabrication and Testing of a Wearable Cooling System (2005)

A wearable cooling system was developed in this study for use in elevated temperature environments by military, fire-fighting, chemical-response, and other hazardous duty personnel. Such a system is expected to reduce heat-related stresses, increasing productivity and allowable mission duration, reduce fatigue, and lead to a safer working environment. The cooling system consists of an engine-driven vapor-compression system assembled in a backpack configuration, coupled with a cooling garment containing refrigerant lines worn in close proximity to the skin. A 2.0 L fuel tank in the backpack powers a small-scale engine that runs a compressor modified from the original air compression application to the refrigerant compression application here. A centrifugal clutch and reduction gear train system was designed and fabricated to couple the engine output to the refrigerant compressor and heat rejection fan. The overall cooling system, including the wearable evaporator, had a total mass of 5.31 kg (11.7 lb) and measured 0.318 נ0.273 נ0.152 m (12.5 נ10.75 נ6 inches).\nTesting was conducted in a controlled environment to determine system performance over a wide range of expected ambient temperatures (37.7-47.5㩬 evaporator refrigerant temperatures (22.2-26.1㩬 and engine speeds (10,500-13,300 RPM). Heat removal rates of up to 300 W, which is the cooling rate established in the literature as being required for maintaining comfort at an activity level comparable to calisthenics or moderate exercise, were demonstrated at a nominal ambient temperature of 43.3㠨110橮 Modeling the fuel as 88 percent methanol (LHV ~ 1.992ױ07 J/kg) and 12 percent oil, the system consumed 1750 W at an average fuel mass flow rate of 0.316 kg/hr to provide a nominal cooling rate of 178 W for 5.7 hrs between refueling.
Electron Injection and Transport Properties of Phenazine Compounds with Fused Rings (2010)

Electron injection and the transport properties of three phenazine compounds, tetrabenzophenazine (TBP), dibenzodipyridophenazine (DBDPP), and tetrapyridophenazine (TPP), were investigated to determine the effect of nitrogen atoms in fused-ring molecules. These three compounds worked as electron transport materials, exhibiting high electron mobility – on the order of 10-3 cm2 V-1 s-1. Increasing the number of nitrogen atoms deepened the energy levels and lowered crystallinity in vacuum-deposited films. In particular, TPP containing six nitrogen atoms showed very efficient electron injection from an aluminum cathode.
Lithium Insertion into Anatase Inverse Opal (2004)

Anatase inverse opal was prepared either in the form of powder or thin layers via templating with polystyrene latex spheres. The four different methods employed for the deposition were anodic oxidative hydrolysis of liquid-phase deposition from solution, and deposition from titanium(IV) isopropoxide either in the vapor phase or in propanolic solution. Electrochemical preparation from gave the best results. The pores were narrower by ca. 30% compared to the nominal size of latex spheres, as documented by scanning electron microscopy and by the position of the stop band in the optical spectrum. The anatase inverse opals exhibit sluggish electrochemical performance for Li-insertion compared to nontemplated anatase with more dense packing of nanocrystals. This is due to poor electrical contacts between the particles in the nanocrystalline network. The limited number of necking points for charge transport is documented by transmission electron microscopy images. Cyclic voltammograms of Li-insertion showed two pair of extra peaks (S peaks) with formal potentials of 1.5 and 1.6 V, respectively, for both templated and nontemplated electrodeposits. The S peaks were absent in the opals prepared by the remaining three synthetic methods. © 2004 The Electrochemical Society. All rights reserved.
Second-Order Shape Optimization for Geometric Inverse Problems in Vision (2014)

We develop a method for optimization in shape spaces, i.e., sets of surfaces modulo re-parametrization. Unlike previously proposed gradient flows, we achieve superlinear convergence rates through an approximation of the shape Hessian, which is generally hard to compute and suffers from a series of degeneracies. Our analysis highlights the role of mean curvature motion in comparison with first-order schemes: instead of surface area, our approach penalizes deformation, either by its Dirichlet energy or total variation, and hence does not suffer from shrinkage. The latter regularizer sparks the development of an alternating direction method of multipliers on triangular meshes. Therein, a conjugate-gradient solver enables us to bypass formation of the Gaussian normal equations appearing in the course of the overall optimization. We combine all of these ideas in a versatile geometric variation-regularized Levenberg-Marquardt-type method applicable to a variety of shape functionals, depending on intrinsic properties of the surface such as normal field and curvature as well as its embedding into space. Promising experimental results are reported.
Review: Glucose-sensitive insulin (2020)

The vast majority of published systems are not suitable for product development, but a few glucose-sensitive insulin concepts have recently reached clinical trials, and there is hope that glucose-sensitive insulin will become available to people with diabetes in the near future.
Coating Textiles with Antibacterial Nanoparticles Using the Sonochemical Technique (2020)

This chapter reviews the research on antibacterial functionalization of textiles with inorganic nanoparticles by the sonochemical method. Sonochemical reactions are dependent on acoustic cavitation: the formation, growth, and explosive collapse of bubbles in irradiated liquids. Nanotechnology allows textiles to become multifunctional and produce fabrics with special functions—fabrics that provide ultraviolet protection and are antibacterial, easy to clean, water and stain repellent, and antiodor. Special efforts were made to search for green stabilizing agents in order to make the incorporation of silver into textiles an environmentally friendly process. The bubbles created during sonochemical irradiation of the liquid collapse near the surface of the solid substrate. Raman spectroscopy was also used to characterize silver-nylon nanocomposites. Natural wool fibers under proper temperature and humidity are a very good media for the generation and propagation of microorganisms. Antibacterial treatment of natural fibers is of particular interest as it significantly increases their functional performance.
Two New Pseudopod Morphologies Displayed by the Human Hematopoietic KG1a Progenitor Cell Line and by Primary Human CD34+Cells (1998)

A primitive human hematopoietic myeloid progenitor cell line, KG1a, characterized by high expression of the CD34 surface antigen has been observed to extend long, thin pseudopodia. Once extended, these pseudopods may take on one of two newly described morphologies, tenupodia or magnupodia. Tenupodia are very thin and form in linear segments. They adhere to the substrate, can bifurcate multiple times, and often appear to connect the membranes of cells more than 300 μm apart. Magnupodia are much thicker and have been observed to extend more than 330 μm away from the cell. Magnupods are flexible and can exhibit rapid dynamic motion, extending or retracting in a few seconds. During retraction, the extended material often pools into a bulb located on the pod. Both morphologies can adhere to substrates coated with fibronectin, collagen IV, and laminin as well as plastic. The CD34 and CD44 antigens are also present on the surface of these podia. Primary human CD34+ cells from fetal liver, umbilical cord blood, adult bone marrow, and mobilized peripheral blood extend these podia as well. The morphology that these pseudopods exhibit suggest that they may play both sensory and mechanical roles during cell migration and homing after bone marrow transplantation.
Methods and apparatus for capture and storage of semantic information with sub-files in a parallel computing system (2023)

Techniques are provided for storing files in a parallel computing system using sub-files with semantically meaningful boundaries. A method is provided for storing at least one file generated by a distributed application in a parallel computing system. The file comprises one or more of a complete file and a plurality of sub-files. The method comprises the steps of obtaining a user specification of semantic information related to the file; providing the semantic information as a data structure description to a data formatting library write function; and storing the semantic information related to the file with one or more of the sub-files in one or more storage nodes of the parallel computing system. The semantic information provides a description of data in the file. The sub-files can be replicated based on semantically meaningful boundaries.
Nuclear IL-33 is a transcriptional regulator of NF-κB p65 and induces endothelial cell activation (2012)

Interleukin (IL)-33, an IL-1 family member, acts as an extracellular cytokine by binding its cognate receptor, ST2. IL-33 is also a chromatin-binding transcriptional regulator highly expressed in the nuclei of endothelial cells. However, the function of IL-33 as a nuclear factor is poorly defined. Here, we show that IL-33 is a novel transcriptional regulator of the p65 subunit of the NF-κB complex and is involved in endothelial cell activation. Quantitative reverse transcriptase PCR and Western blot analyses indicated that IL-33 mediates the expression of intercellular adhesion molecule (ICAM)-1 and vascular cell adhesion molecule (VCAM)-1 in endothelial cells basally and in response to tumor necrosis factor-a-treatment. IL-33-induced ICAM-1/VCAM-1 expression was dependent on the regulatory effect of IL-33 on the nuclear factor (NF)-κB pathway; NF-κB p65 expression was enhanced by IL-33 overexpression and, conversely, reduced by IL-33 knockdown. Moreover, NF-κB p65 promoter activity and chromatin immunoprecipitation analysis revealed that IL-33 binds to the p65 promoter region in the nucleus. Our data provide the first evidence that IL-33 in the nucleus of endothelial cells participates in inflammatory reactions as a transcriptional regulator of NF-κB p65.
Making Computations and Publications Reproducible with VisTrails (2012)

The VisTrails system supports the creation of reproducible experiments. VisTrails integrates data acquisition, derivation, analysis, and visualization as executable components throughout the scientific exploration process, and through systematic provenance capture, it makes it easier to generate and share reproducible results. Using VisTrails, authors can link results to their provenance, reviewers can assess the experiment's validity, and readers can repeat and utilize the computations.
Nanoparticle Technology: Addressing the Fundamental Roadblocks to Protein Biomarker Discovery (2010)

Clinically relevant biomarkers exist in blood and body fluids in extremely low concentrations, are masked by high abundance high molecular weight proteins, and often undergo degradation during collection and transport due to endogenous and exogenous proteinases. Nanoparticles composed of a N-isopropylacrylamide hydrogel core shell functionalized with internal affinity baits are a new technology that can address all of these critical analytical challenges for disease biomarker discovery and measurement. Core-shell, bait containing, nanoparticles can perform four functions in one step, in solution, in complex biologic fluids (e.g. blood or urine): a) molecular size sieving, b) complete exclusion of high abundance unwanted proteins, c) target analyte affinity sequestration, and d) complete protection of captured analytes from degradation. Targeted classes of protein analytes sequestered by the particles can be concentrated in small volumes to effectively amplify (up to 100 fold or greater depending on the starting sample volume) the sensitivity of mass spectrometry, western blotting, and immunoassays. The materials utilized for the manufacture of the particles are economical, stable overtime, and remain fully soluble in body fluids to achieve virtually 100 percent capture of all solution phase target proteins within a few minutes.
A 6-GHz Bandwidth Input Buffer Based on AC-Coupled Flipped Source Follower for 12-bit 8-GS/s ADC in 28-nm CMOS (2022)

This brief presents an input buffer based on AC-coupled flipped source follower (SF) for a 12-bit 8-GS/s time-interleaved (TI) ADC. The flipped SF can drive the ADC’s sampling capacitance with high linearity because the input MOS’s drain current is almost independent of the load capacitance. In addition, the inherent feedback reduces the input buffer’s output impedance, which improves the bandwidth when driving the complex wiring network of TI ADCs. The proposed AC-coupling structure enlarges the input signal range of the flipped SF extensively, making it practical to be used for high-speed ADCs. A compensation capacitor is used to compensate for the nonlinear parasitic capacitance of the input MOS to further improve the linearity. An 8-channel 12-bit 8GS/s TI ADC prototype with the proposed input buffer is implemented in a 28-nm mixed-signal CMOS process. Measured results show that the input bandwidth of the input buffer exceeds 6 GHz with 137-mW power supply. The ADC achieves SFDR of 68 dBFS and SNDR of 54.9 dB with 3.9-GHz, −1-dBFS input signal under 8-GS/s sampling rate. The total power consumption of the ADC is 1.05 W.
Electronic module for the thermal monitoring of a Li-ion battery cell through the electrochemical impedance estimation (2016)

Electrochemical impedance is a not directly measurable parameter of the Li-ion cells that can be exploited to retrieve useful information about the state of the cell itself, such as the State of Charge or the internal temperature. This complex parameter depends on the frequency, which means that its real and imaginary parts change in function of the frequency at which the cell is activated. Nowadays impedance is mainly measured using laboratory equipment as part of dedicated benchmarks, requiring expensive facilities and relatively long procedures. In this paper we propose a new solution to get the impedance value of a Li-ion cell by using both an efficient approach minimizing the test duration, and an innovative electronic solution suitable for automotive embedded needs. The electrochemical impedance is then analysed to deduce the cell's internal temperature with experimental results.
An Association between l -Arginine/Asymmetric Dimethyl Arginine Balance, Obesity, and the Age of Asthma Onset Phenotype (2012)

In late-onset asthma phenotype, plasma ratios of L-arginine to ADMA may explain the inverse relationship of BMI to Fe(NO). In addition, these lower L-arginine/ADMA ratios are associated with reduced lung function and increased respiratory symptom frequency, suggesting a role in the pathobiology of the late-onset phenotype.
COMPARISON OF OBSERVED BIOCHEMICAL RECURRENCE FREE SURVIVAL IN PATIENTS WITH LOW PSA VALUES UNDERGOING RADICAL PROSTATECTOMY TO THE PREDICTIONS OF A PREOPERATIVE NOMOGRAM (2008)

You have accessJournal of Urology1 Apr 2008COMPARISON OF OBSERVED BIOCHEMICAL RECURRENCE FREE SURVIVAL IN PATIENTS WITH LOW PSA VALUES UNDERGOING RADICAL PROSTATECTOMY TO THE PREDICTIONS OF A PREOPERATIVE NOMOGRAM Ryan K Berglund, Andrew J Stephenson, Angel M Cronin, Andrew J Vickers, James A Eastham, Eric A Klein, and Bertrand D Guillonneau Ryan K BerglundRyan K Berglund More articles by this author , Andrew J StephensonAndrew J Stephenson More articles by this author , Angel M CroninAngel M Cronin More articles by this author , Andrew J VickersAndrew J Vickers More articles by this author , James A EasthamJames A Eastham More articles by this author , Eric A KleinEric A Klein More articles by this author , and Bertrand D GuillonneauBertrand D Guillonneau More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(08)61642-0AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail "COMPARISON OF OBSERVED BIOCHEMICAL RECURRENCE FREE SURVIVAL IN PATIENTS WITH LOW PSA VALUES UNDERGOING RADICAL PROSTATECTOMY TO THE PREDICTIONS OF A PREOPERATIVE NOMOGRAM." The Journal of Urology, 179(4S), p. 558 © 2008 by American Urological AssociationFiguresReferencesRelatedDetails Volume 179Issue 4SApril 2008Page: 558 Advertisement Copyright & Permissions© 2008 by American Urological AssociationMetricsAuthor Information Ryan K Berglund More articles by this author Andrew J Stephenson More articles by this author Angel M Cronin More articles by this author Andrew J Vickers More articles by this author James A Eastham More articles by this author Eric A Klein More articles by this author Bertrand D Guillonneau More articles by this author Expand All Advertisement PDF downloadLoading ...
Reaching a Double-Digit Dielectric Constant with Fullerene Derivatives (2020)

The dielectric constant (εr) of organic semiconductors is a key material parameter for improving device performance in the field of organic electronics. However, the effect of the dielectric constant on the electronic and optoelectronic properties of materials remains unclear due to the scarcity of known organic semiconductors with an εr value higher than 6. Herein, the optical and electronic properties of a homologous series of fullerene derivatives with high εr are studied. The low frequency (<106 Hz) εr is extracted from the capacitance measured using impedance spectroscopy, and the effect of length (n) and geometrical arrangement of the polar ethylene glycol (EG) side chains is investigated. The εr is found to correlate with length for the symmetrical Bingel adducts, whereas for the unsymmetrical branched-EG chain adducts there is no significant difference between the two EG chain lengths. For BTrEG-2, the εr reaches 10, which is an unprecedented value in monoadduct fullerene derivatives. These materials open up new possibilities of studying the effect of εr in organic electronic devices such as organic photovoltaics, organic thermoelectrics, and organic field-effect transistors.
LIGHT REQUIREMENTS FOR THE ENHANCED SYNTHESIS OF A PLASTID mRNA DURING SPIRODELA GREENING (1978)

Abstract A plastid mRNA (5 × 10 5 mol wt) appears as a burst 3 h after white light greening of steady state dark grown plants of Spirodela oligorrhiza . In this species, chlorophyll synthesis begins after 12 h. The light requirement is different from the pulse of far‐red reversible red light required to abolish the lag of chlorophyll synthesis in many species, including Spirodela . Continuous high energy far‐red is not stimulatory. When the illumination is not continued throughout the time of incorporation, the stimulation is minimal. Low energy blue and red light are stimulatory, and green and far‐red light are ineffectual. Blue light was &gt; 5 times as effective as red light at many dose levels. Illumination with 3 × 10 17 quanta/m 2 /s (50pEm/cm 2 /s) blue light at 476 nm gave about half maximum stimulation.
Copper-Mediated Polycondensations of Substituted Diiodoferrocenes and Bis(stannyl)ferrocenes:  Synthesis and Properties of Soluble Polyferrocenylenes Containing Trimethylsilyl or Methyl Groups (2002)

Low to moderate molecular weight substituted polyferrocenylenes [(η5-C5H3X)Fe(η5-C5H3X)]n (where 3a−3c, X = H, SiMe3, Me) were prepared from the Ullmann coupling reaction of the diiodoferrocenes, (η5-C5H3XI)2Fe (2a−2c), with an excess of copper metal or alternatively CuCl-facilitated coupling of the bis(stannyl)ferrocene, (η5-C5H3SiMe3SnBu3)2Fe (1b). The new monomers were characterized by 1H and 13C NMR spectroscopy, elemental analysis and mass spectrometry. A single-crystal X-ray diffraction study (η5-C5H3SiMe3I)2Fe (2b) shows the disubstituted cyclopentadienyl rings are eclipsed with the substituents staggered by 20°. The molecular weights (Mw) for the soluble homopolymers 3b and 3c were estimated by gel permeation chromatography in THF vs polystyrene standards and were found in the range from 2.0 × 103 to 1 × 104 with generally broad polydispersities (PDI > 2). Polymers 3b and 3c were characterized by 1H and 13C NMR spectroscopy and elemental analysis. The polymer thermal transition behavior and morphology of 3a−3c were examined by differential scanning calorimetry (DSC) and by powder X-ray diffraction (PXRD). The amorphous nature of the disubstituted polymers 3b and 3c was evident by the presence of weak glass transitions and the absence of any melt transitions. In contrast, the semicrystalline nature of the largely insoluble polyferrocenylene 3a led to the presence of a strong melt transition by DSC in addition to three sharp peaks in its the PXRD spectrum. The polymers 3b and 3c as well as their I2 and TCNE oxidized products (4b, 4c and 5b, 5c) were characterized by UV/vis/NIR spectroscopy. The neutral polymers 3b and 3c showed only weak d−d visible transition centered near λ = 480 nm, while the partially oxidized derivatives showed strong charge-transfer peaks in the visible λ = 630−700 nm) and broad intervalence charge-transfer transitions between λ = 850 and 1900 nm. Cyclic voltammetry of the neutral polymers 3b and 3c showed two well-separated oxidation waves with ΔE1/2 values of 485 and 460 mV s-1 respectively and were consistent with substantial interaction between neighboring metal centers. Mössbauer data of the partial oxidized dimethylferrocene polymer 5c with TCNE at room temperature indicates that electron transfer is valence trapped with distinct Fe2+ and Fe3+ sites.