gebhart/patrepeval huggingface dataset:
Influence of anisotropies on transverse modes in oxide-confined VCSELs (2002)

We present a comprehensive fully vectorial model for the cavity eigenmodes of oxide-confined vertical-cavity surface-emitting lasers (VCSELs) with the details of their complex structure. It includes device-inherent symmetry-breaking mechanisms like noncircular geometries and material anisotropies related to the elasto-optic and electro-optic effect. The latter is accounted for in the model starting from the material and doping profiles. We compare these theoretical results with experimental findings of spectrally and polarization-resolved transverse mode nearfields of oxide-confined VCSELs with two different aperture diameters. Within a parametric study of the influence of aperture anisotropies, we are able to calculate frequencies and gains of all transverse mode families, their polarization dependence and their spatial mode profiles which are in good agreement with the experimental findings.
Electron-Deficient N-Heteroaromatic Linkers for the Elaboration of Large, Soluble Polycyclic Aromatic Hydrocarbons and Their Use in the Synthesis of Some Very Large Transition Metal Complexes (2007)

The selective oxidation of the perimeter of an extended polycyclic aromatic hydrocarbon (PAH), namely a six-fold tert-butylated tetrabenzo[bc,ef,hi,uv]ovalene, led to the formation of an alpha-diketone. The newly installed carbonyl centers allowed this building block to be converted into the largest known heteroatom-containing PAHs (up to 224 atoms in the aromatic core) by way of the quinoxaline ring condensation reaction. The tert-butyl substituents caused a distortion of the usually planar aromatic frameworks, which hampered the aggregation tendency of the extended aromatic pi-systems and led to extraordinarily high solubilities. All of the systems described here, even the giant phthalocyanine, could thus be purified using standard chromatographic techniques and characterized using typical spectroscopic methods. For the first time, fully resolved 1H NMR spectra of soluble, diamagnetic, 98- and 104-atom-containing aromatic systems are presented. The computed and experimental UV/vis spectra emphasize the dependence of the characteristic alpha-, p-, and beta-bands upon the size of the PAHs. It was also possible to obtain the largest known ligand to yet be complexed around a ruthenium center. A quadrupolar solvatochromic effect was observed when two donating PAH moieties were fused to an accepting quinoxaline center, in which case the photoluminescence spanned a range of about 80 nm. Electrochemical properties of the new nanographenes were investigated using cyclic voltammetry, and this showed quasi-reversible reductions.
Evolution of a vortex in glow discharge plasma (2005)

The evolution of a vortex in glow discharge plasma is studied analytically. Specifically, the mechanism of local energy deposition into the flow by the plasma is considered and its effect on the structure of an inviscid vortex is analyzed. The vortex is modeled by a set of Euler’s equations while the energy transferred by the plasma into the gas is represented by Rayleigh mechanism. In this mechanism, the amount of heat addition is a function of local gas density. The analysis indicates that the plasma can have a considerable effect on the structure of a vortex. The inviscid calculations show that in a uniform discharge, a 1 cm vortex dies out in a fraction of a second.
Molybdenum carbide–carbon nanocomposites synthesized from a reactive template for electrochemical hydrogen evolution (2014)

Active Mo<sub>2</sub>C–C nanocomposites were synthesized using an mpg-C<sub>3</sub>N<sub>4</sub> template and demonstrated as active electrocatalysts for the hydrogen evolution reaction.
Thickness control by ion beam milling in acoustic resonator devices (2010)

In this paper, practical aspects of production worthy methods for film uniformity adjustment (trimming) used in manufacturing of Film Bulk Acoustic Resonator (FBAR) filters have been presented. Two-step trimming in conjunction with thickness "smoothing" technique control total thickness range to within less than 8 A on product wafers with variable surface film etch rates even with difficult to measure film thickness. Trimming processes were used to allow using one wafer from a batch to provide compensation feedback in the FBAR devices. Combining ion mill with deposition in the same tool produces <;0.1% uniformity in the deposited films.
A study of n-doping in self-catalyzed GaAsSb nanowires using GaTe dopant source and ensemble nanowire near-infrared photodetector (2020)

This work reports a comprehensive investigation of the effect of gallium telluride (GaTe) cell temperature variation (T<sub>GaTe</sub>) on the morphological, optical, and electrical properties of doped-GaAsSb nanowires (NWs) grown by Ga-assisted molecular beam epitaxy (MBE). These studies led to an optimum doping temperature of 550 °C for the growth of tellurium (Te)-doped GaAsSb NWs with the best optoelectronic and structural properties. Te incorporation resulted in a decrease in the aspect ratio of the NWs causing an increase in the Raman longitudinal optical/transverse optical vibrational mode intensity ratio, large photoluminescence emission with an exponential decay tail on the high energy side, promoting tunnel-assisted current conduction in ensemble NWs and significant photocurrent enhancement in the single nanowire. A Schottky barrier photodetector (PD) using Te-doped ensemble NWs with broad spectral range and a longer wavelength cutoff at ∼1.2 µm was demonstrated. These PDs exhibited responsivity in the range of 580-620 A W<sup>-1</sup> and detectivity of 1.2-3.8 × 10<sup>12</sup> Jones. The doped GaAsSb NWs have the potential for further improvement, paving the path for high-performance near-infrared (NIR) photodetection applications.
Entwicklung und Analyse von Arrays mikromechanischer Beschleunigungssensoren (2009)

Die vorliegende Arbeit beschreibt die Entwicklung eines redundanten, mikromechanischen Beschleunigungssensorarrays. Die Redundanz wird genutzt, um Messabweichungen zu korrigieren. Die Einflussfaktoren auf die Genauigkeit der Sensoren werden analysiert und die erzielten Verbesserungen beim Einsatz von Sensorarrays aufgezeigt. Neben den stochastischen Einflüssen können mithilfe des Arrays auch deterministische Fehler bzw. Querempfindlichkeiten korrigiert werden. Die Fertigung des Sensorarrays erfolgt mittels einer MEMS-Technologie mit einem hohen Aspektverhältnis im einkristallinen, anisotropen Silizium. Das Design ist so gestaltet, dass für jedes Sensorelement dieses Arrays bei gleichbleibenden mechanischen und elektrischen Sensoreigenschaften beliebige Messrichtungen realisierbar sind. Die messtechnische Charakterisierung der Sensorarrays und die Signalauswertung werden ausführlich beschrieben. Für die Signalauswertung der kapazitiv arbeitenden Sensorelemente wird ein angepasstes Trägerfrequenzmessverfahren entwickelt. Die Sensorarrays arbeiten mittels eines digitalen Reglers in einem geschlossenen Regelkreis. Die Verbesserungen des Messsignals durch die redundante Anordnung werden aufgezeigt.
Development of a high‐throughput method for preparing human urine for two‐dimensional electrophoresis (2005)

There is an increasing interest in analysing the human urinary proteome in the search for biomarkers. However, despite the ease of its collection, urine is a difficult fluid to analyse by two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) because of its dilute protein content and high salt levels. Here, we describe a method for high-throughput processing of urine for 2-D PAGE. Urine is filtered and applied to solid phase extraction columns. After washing, the urinary proteins are eluted and freeze dried. The lyophilised powder can then be resuspended in an appropriate buffer for downstream proteomic analysis.
Caveolae and the Endothelial Nitric Oxide Synthase (2006)

This chapter contains sections titled: Introduction Caveolin: A Scaffold for eNOS The Caveolin-eNOS Regulatory Cycle Lipoproteins and Caveolin-eNOS Interaction Angiogenesis and Caveolin-eNOS Interaction Vasodilation, Endothelial Permeability and Caveolin-eNOS Interaction Caveolin-3-eNOS Interaction in Cardiac Myocytes Conclusions
Synthesis of a cleavable dinucleotide photoaffinity probe of ribonucleic acid polymerase: application to trinucleotide labeling of an Escherichia coli transcription complex (1983)

The cleavable dinucleotide photoaffinity probe 5'-[[(4-azidophenacyl)thio]phosphoryl]adenylyl(3'-5')uridine was prepared and used to determine the 5' contacts of a trinucleotide in an Escherichia coli RNA polymerase/T7 DNA transcription complex. The probe was prepared by alkylating 5'-(thiophosphoryl)adenylyl(3'-5')uridine with azidophenacyl bromide. The 5'-(thiophosphorylyl(3'-5')uridine was prepared by the abortive initiation reaction of RNA polymerase on a poly[d(A-T)] DNA template, using adenosine 5'-O-(thiomonophosphate) and uridine triphosphate as substrates. A transcription complex containing a radiolabeled trinucleotide at the A1 promoter of bacteriophage T7 D111 or D123 DNA was prepared by using the dinucleotide photoaffinity probe as initiator and cytidine [alpha-32P]triphosphate as the other substrate. After photolysis, the labeled subunits and DNA were isolated, and the trinucleotide was removed in the presence of phenylmercuric acetate and analyzed by polyacrylamide gel electrophoresis. The 5' end of the trinucleotide was found to label the DNA (approximately 88%) and also the beta (approximately 10%) and sigma (approximately 3%) subunits of E. coli RNA polymerase. It was also shown that the order of migration of the beta and beta' subunits of E. coli RNA polymerase on polyacrylamide gel electrophoresis in sodium dodecyl sulfate is different from that in sodium dodecyl sulfate plus urea.
Commercially Available Dental Implants: Review of Their Surface Characteristics (2012)

Titanium is widely used as an implant material in dentistry with excellent clinical results. The clinical success of the implants is often coupled to the surface properties of the implants. This review focuses on the available literature describing the surface characteristics of the most widely used commercial dental implants. The current commercially available dental implants all show differences in their surface characteristics, for example with regard to surface roughness, surface energy, and surface phase composition. Some surfaces lack published data while the characteristics of others are well described in the literature. However, more analysis by standardized techniques must be performed in order to fully understand which specific parameters are important for osseointegration and clinical success.
DISTINCT TOLERANCE PATHWAYS IN SENSITIZED ALLOGRAFT RECIPIENTS AFTER SELECTIVE BLOCKADE OF ACTIVATION SIGNAL 1 OR SIGNAL 21 (1999)

CD4 mAb-induced blockage of activation signal 1 or CTLA4Ig-mediated blockage of costimulatory signal 2 may induce a true transplantation tolerance in sensitized rats, as documented by permanent graft acceptance and attenuation of chronic injury. The infectious pathway operates in a cell dose-dependent manner. Th2-type deviation in the graft itself is not required for tolerance maintenance, and it does not necessarily lead to chronic injury.
Superimposition of checkerboard distribution of ephelides and neurofibromas in a patient with segmental neurofibromatosis (2022)

Segmental neurofibromatosis (SNF) is a mosaic form of neurofibromatosis type I (NF1) caused by a prenatal somatic mutation in NF1.1 Various tumors can develop in patients with SNF and systemic neurofibromatosis, including neurofibromas, malignant peripheral nerve sheath tumors, and gastric adenocarcinomas.2,3 SNF tumors originate from cells that bear a prenatal NF1 mutation. Mosaic skin disorders exhibit several characteristic patterns of skin lesions, including Blaschko-linear, checkerboard, phylloid, and patchy patterns, depending on the cell type that bears the causative mutation.
Class Notes: Programming Parallel Algorithms CS 15-840B (Fall 1992) (1993)

These are the lecture notes for CS 15-840B, a hands-on class in programming parallel algorithms. The class was taught in the fall of 1992 by Guy Blelloch, using the programming language NESL. It stressed the clean and concise expression of a variety of parallel algorithms. About 35 graduate students attended the class, of whom 28 took it for credit. These notes were written by students in the class, and were then reviewed and organized by Guy Blelloch and Jonathan Hardwick. The sample NESL code has been converted from the older LISP-style syntax into the new ML-style syntax. These notes are not in a polished form, and probably contain several errors and omissions, particularly with respect to references in the literature. Corrections are welcome.
Das Vesikuläre Stomatitis Virus in der onkolytischen Virotherapie des pankreatischen duktalen Adenokarzinoms (2013)

Ein groses Problem in der Behandlung des pankreatischen duktalen Adenokarzinoms (PDAC) ist die ausgepragte Resistenz gegenuber konventionellen Therapiemasnahmen. Die onkolytische Virotherapie ist eine innovative Therapieform bei der replikationsfahige Viren zur Behandlung von Krebserkrankungen eingesetzt werden. In der vorliegenden Arbeit wurde erstmalig der Einsatz des Vesikularen Stomatitis Virus (VSV) in vitro und an zwei verschiedenen murinen Tumormodellen des PDAC untersucht.
In vitro-Versuche demonstrierten eine potente Replikation von VSV in allen analysierten pankreatischen Tumorzelllinien. Bezuglich der Interferonsensibilitat unterschieden sich die Zelllinien erheblich voneinander. Im Gegensatz zu der potenten Replikation in vitro zeigt die Replikationsanalyse in vivo nur eine gering ausgepragte Replikationsaktivitat in den intratumoral-behandelten orthotopen und endogenen murinen Tumormodellen.
Fur die schlechte Ansprache auf die exogene Interferonstimulation in einem Teil der humanen Zelllinien ist moglicherweise die schwache Expression der zugehorigen Interferonrezeptor-untereinheiten IFNAR1 und IFNAR2 verantwortlich. Die pankreatischen Tumorzelllien scheinen einen Defekt in der Toll-like Rezeptor 3 abhangigen Identifizierung von doppelstrangiger RNA zu besitzen und es gibt Anzeichen fur Funktionseinschrankungen im Jak-STAT-Signalweg in einigen untersuchten Zelllinien. Diese Studie offenbarte und diskutierte die Probleme und Herausforderungen beim Einsatz von Vesikularen Stomatitis Viren in der praklinischen Therapie des PDAC.
A Porcine Anterior Segment Perfusion and Transduction Model With Direct Visualization of the Trabecular Meshwork (2016)

Compared with previously used human donor eyes, this inexpensive porcine anterior segment perfusion model is of sufficient, repeatable high quality to develop strategies of TM bioengineering. Trabecular meshwork could be observed directly. Despite significant anatomic differences, effects of transduction replicate the main aspects of previously explored human, feline and rodent models.
Forecasting World Natural Gas Supply (2000)

Abstract World gas supply forecasting has proved difficult because its exploration, transportation, and customer bases are so heavily dependent on fluctuating economic factors. Our recent study showed that the conventional Hubbert model with one complete production cycle is not appropriate for use in forecasting gas production trends for most gas producing countries. This paper presents our forecast for the world's supply of conventional natural gas to the year 2050. We used a multicyclic Hubbert approach to develop 53 country-specific gas supply models that enable production forecasts for virtually all of the world's gas. The multicyclic modeling approach is presented in a convenient form that makes production data exhibiting two or more cycles easier to model. These models were aggregated to the regional level and to the world level. Supply models for some organizations (e.g. OPEC, non-OPEC, OECD) were also developed and analyzed. Our results indicate that the world's supply of natural gas will peak in 2014, followed by an annual depletion rate of 1%/yr. A regional analysis indicates that gas production of some regions will peak soon. North American gas production is currently (1999) at its peak. West European gas production is expected to peak in 2002. The countries of the former Soviet Union and Middle East, which comprise about 60% of world's ultimate recovery of natural gas, will be the main sources of world gas supply in the future.
Activity and selectivity of zeolite catalysts in m-xylene isomerization (1987)

International audience
ChemInform Abstract: Efficiency Records in Mesoscopic Dye‐Sensitized Solar Cells (2015)

Abstract Review: [176 refs.
Infrastructure Investment During a Boom/Bust Cycle (1990)

During a boom period, a utility can find itself in a position where the usual rules of thumb for making investment decisions are no longer trusted. If the utility enters the boom period with a shortage of capacity, the problem is exacerbated. Such was the situation the City of Austin, Texas found itself in during the early 1980s. The Utility's efforts to catch up with growth and the lessons learned are described in this case study paper which addresses different perspectives on the art and science of 'providing water and wastewater service' and the implications of conducting revenue bond elections on a project by project basis.
NSEC5, DNSSEC Authenticated Denial of Existence (2018)

The Domain Name System Security Extensions (DNSSEC) introduced two
resource records (RR) for authenticated denial of existence: the NSEC
RR and the NSEC3 RR. This document introduces NSEC5 as an alternative
mechanism for DNSSEC authenticated denial of existence. NSEC5 uses
verifiable random functions (VRFs) to prevent offline enumeration of
zone contents. NSEC5 also protects the integrity of the zone contents
even if an adversary compromises one of the authoritative servers for
the zone. Integrity is preserved because NSEC5 does not require
private zone-signing keys to be present on all authoritative servers
for the zone, in contrast to DNSSEC online signing schemes like NSEC3
White Lies.
Photoactivation and inactivation of <i>Arabidopsis</i> cryptochrome 2 (2016)

Cryptochromes are blue-light receptors that regulate development and the circadian clock in plants and animals. We found that Arabidopsis cryptochrome 2 (CRY2) undergoes blue light-dependent homodimerization to become physiologically active. We identified BIC1 (blue-light inhibitor of cryptochromes 1) as an inhibitor of plant cryptochromes that binds to CRY2 to suppress the blue light-dependent dimerization, photobody formation, phosphorylation, degradation, and physiological activities of CRY2. We hypothesize that regulated dimerization governs homeostasis of the active cryptochromes in plants and other evolutionary lineages.
Structural Dynamic Design of a Rotating Hydrogen Co-Fired Multi-Fuel External Combustor (2010)

In the paper the authors will present the design and preliminary rotor-bearing dynamics test results for a hydrogen co-fired multi-fuel capable rotary burner. Hydrogen co-firing involves moving a stream of liquid or gaseous fuel through a zone of combusting hydrogen. The high-temperature of the hydrogen combustion zone initiates a vigorous combustion of the fuel stream moving through. Given the very high combustion temperatures of the rotating hydrogen flame fronts and close proximity of the rotating flame holder to the structural support, an integrated high temperature drive and bearing system was necessary to achieve reliable long term operation. Design space constraints for the rotary hydrogen burner head resulted in a drive and bearing system design that includes 150 mm diameter compliant foil journal bearing supports and an air driven reaction turbine closely integrated with the thrust foil bearings. Drive turbine design, rotor-bearing system dynamic tradeoffs and thermal management in the presence of high axial thermal gradients will be presented along with preliminary testing to design speeds of 7500 rpm (i.e, surface velocity of 100 m/s) under simulated thermal gradients with the rotating assembly face temperature reaching as high as 800°C.
A Multicenter, Controlled Human Infection Study of Influenza A(H1N1)pdm09 in Healthy Adults (2023)

We achieved a 71.1% attack rate of MMID. High baseline HAI and MN were associated with protection from illness. Clinical Trials Registration. NCT04044352.
Swelling and shrinking of polymer chains in homopolymer blends (1998)

The radius of gyration, R, of polymer chains in homopolymer blends is studied in the framework of a self-consistent one-loop approximation. We show that the polymer chains can shrink or swell in comparison to the Gaussian chain. Swelling of the polymer chains in a region far away from the critical point is caused by the steric repulsive forces that were included in the model as the constraint of incompressibility. The chains shrink progressively, as we approach the critical region passing through the Gaussian limit, \documentclass{article}\pagestyle{empty}\begin{document}$ R_0 = \sqrt{\frac{N}{6}}l $\end{document}, far away from the critical point (N − degree of polymerization, l − length of monomer). The correction responsible for the swelling and the shrinking is small when the concentrations of components ϕ are comparable (\documentclass{article}\pagestyle{empty}\begin{document}$ N = 1000,\bar\phi = 0.5,\frac{{R_0^2 - R^2}}{{R_0^2}} = \pm 0.02\%$\end{document}). This effect, although small, leads to a local demixing, a sharp shrinking of chains in both components accompanied by a strong change of the global inter-monomer distance, which should be observable experimentally. When the local demixing occurs there is a sudden increase in the scattering intensity (of the order of 30% for N = 1000, and ϕA = 0.2). The increase of the degree of polymerization of the same type of chains leads to an increase of the swelling-shrinking effects. In addition, the critical concentration of the shorter chains component is smaller in comparison to the value obtained in the Flory-Huggins theory. The self-consistent determination of the radius of gyration and the upper wave-vector cutoff make our model free from any divergences. In the limit of N → ∞ this theory reduces to the random phase approximation (RPA) of de Gennes.
Air-Stable, Cross-Linkable, Hole-Injecting/Transporting Interlayers for Improved Charge Injection in Organic Light-Emitting Diodes (2008)

Modification of inorganic electrode surfaces has attracted great attention in the quest to optimize organic optoelectronic devices. An air-stable, cross-linkable trimethoxysilane functionalized hole-transporting triarylamine (4,4′-bis[(p-trimethoxysilylpropylphenyl)phenylamino]biphenyl, TPD−[Si(OMe)3]2) has been synthesized and self-assembled or spin-coated onto tin-doped indium oxide (ITO) anode surfaces to form monolayers or multilayer siloxane films, respectively. The modified ITO surfaces were characterized by advancing aqueous contact angle, X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), and cyclic voltammetry (CV). Increased surface work function and enhanced ITO−hole transport layer (HTL) contact via robust covalent bonding are expected to facilitate hole injection from the ITO anode, resulting in organic light-emitting diode (OLED) performance enhancement versus that of a device without such interlayers. For a device having the structure ITO/spin-coated-TPD−[Si(OMe)3]2 from aqueous alcohol + acetic acid blend solution (40 nm)/NPB (20 nm)/Alq (60 nm)/LiF (1 nm)/Al (100 nm), a maximum light output of 32 800 cd/m2, a 4.25 V turn-on voltage, and a maximum current efficiency of 5.8 cd/A is achieved. This performance is comparable to or superior to that of analogous devices prepared with analogous trichorosilyl precursors. The air-stable interlayer material developed here is also applicable to large-area coating techniques.