gebhart/patrepeval huggingface dataset:
Throughput Analysis of a Randomized Sensing Scheme in Cell-Based Ad-Hoc Cognitive Networks (2009)

Cognitive radios have a great potential to improve spectrum utilization by enabling secondary (unlicensed) users to opportunistically access the spectrum without disturbing the primary (licensed) users' communication. However, to assure acceptable QoS for secondary users without interfering with primary users several challenges must be overcome under physical constraints. Because of hardware constraints, secondary users can only sense a limited number of spectrum channels. Therefore a secondary user must wisely select the channels to be sensed to increase it's likelihood for successful data transmission. However if a secondary user takes up a greedy approach and disregards other secondary users in its channel selection, the whole secondary network would suffer in terms of aggregate throughput. Also because of the autonomous nature of secondary users, the search policy must be as decentralized as possible, i.e. secondary users should need almost no information of one another to operate. In this work we propose a search policy for secondary users in a cell based ad-hoc network and evaluate its performance (total primary and secondary throughput) as a function of different system parameters.
Interaction of Elastic Dilatational and Shear Waves With a Frictional Sliding Interface (2001)

The refraction and reflection of plane dilatational and shear waves, which are incident upon a sliding frictional interface between two elastic half-spaces, is considered. The contact interface is governed by Coulomb’s friction law with a constant friction coefficient. The incoming waves interact with the interface to form two reflected waves (shear and dilatational) as well as two such refracted waves. The dependency of the reflected and refracted wave amplitudes on the incoming wave angle is investigated. It is shown that the contact normal stress, shear stress and relative sliding velocity are proportional to each other. The interaction of an isolated interfacial rectangular wave pulse, or of a periodic set of pulses, with the frictional interface is then investigated. It is shown that steady motion of the two bodies can result due to the propagation of interface stick-slip waves. This motion can occur in the same direction or in the opposite direction of the remotely applied shear traction, or without an applied shear traction. The velocity of relative motion as a function of material parameters, friction coefficient, remotely applied shear and normal tractions, and parameters of the pulse is presented and discussed. These results may lead to a new form of ultrasonic propulsion which can be utilized for position or velocity control of a sliding body.
Process condition dependence of mechanical and physical properties of silicon nitride thin films (2007)

This study uses a resonance method to determine Young’s modulus (E), shear modulus (G), and Poisson’s ratio (ν) of plasma-enhanced chemical vapor deposited silicon nitride (SiNxHy) thin films deposited under varying process conditions. The resonance method involves exciting the bending and torsional vibration modes of a microcantilever beam fabricated from a film. The E and G values can be extracted directly from the bending and torsional vibration modes, and the ν value can be determined from the calculated E and G values. The density (ρ) of the films was determined using a quartz crystal microbalance method. In order to determine the validity of the resonance method, finite element modeling was used to determine its dependence on microcantilever beam dimensions. Over a deposition temperature range of 100–300°C, measured E, G, and ν values varied within 54–193GPa, 22–77GPa, and 0.20–0.26 with changes in process conditions, respectively. Over the same deposition range, measured ρ values varied within 1.55–2.80g∕cm3 with changes in process conditions.
ChemInform Abstract: The First Internally Functionalized Chiral (2.2)Metacyclophanes. (1990)

Abstract The bis(bromomethyl)benzenes (I) undergo cyclocondensation with the mercaptophenyltosylamides (II) in acetonitrile to form the helical (2.2)phanes (III).
The klystrode—An unusual transmitting tube with potential for UHF-TV (1982)

Economic considerations, especially the increasing cost of energy, have forced electron power tube designers to revise current designs and to re-examine old ones. One result of this re-examination is the rebirth and improvement of a very old and largely forgotten device which appears to hold great promise as a generator of tens to hundreds of kilowatts in the UHF range, with special advantages in TV service. The device itself is described both theoretically and in practical terms, its performance to date and its calculated limits of power output are given, and examples of RF circuitry are shown.
Quantification of Intestinal Mucins (2003)

Intestinal mucins are glycoproteins containing a very high proportion of carbohydrate, up to 90%, and they can occur either in a membrane-bound or a soluble form (1). The general structure of these molecules includes discrete C-terminal and N-terminal regions, which are relatively poorly glycosylated, at either end of a long repeating structure, up to 50 repeats, which is heavily O-glycosylated on serine and threonine residues the first sugar in each oligosaccharide always being N-acetyl-galactosamine (2). These oligosaccharide chains can vary between 1 and about 15 saccharides. The C- and N-terminal regions are likely to be of importance in determining the membranous or secreted nature of the molecule (2).
ChemInform Abstract: Reduction of Biscarborane: Molecular Structures of ((15‐crown‐5)3Na2)( C2B10H11)2 and (P(C6H5)3CH3)2(μ‐9,10‐CH‐(μ‐9′,10′‐CH‐nido‐7′‐ CB10H11)‐nido‐7‐CB10H11). (1992)

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.
Investigation of Intrinsic Carbon-Related Defects in 4H-SiC by Selective-Excitation Photoluminescence Spectroscopy (2012)

Emission of carbon-related defects is investigated by means of selectively-excited photoluminescence in high purity 4H-SiC electron-irradiated with very low dose. Two new centers with clearly associated phonon replicas are observed, one of which is tentatively assigned to the carbon split interstitial at hexagonal site. The temperature dependence of the spectrum is also studied and indicates that at least some of the observed luminescence lines arise from recombination of excitons bound to isoelectronic centers.
Compressive Sensing–Based High-Resolution Imaging and Tracking of Targets and Human Vital Sign Detection behind Walls (2017)

The high-resolution and noninvasive imaging of stationary and moving human and its vital signatures through clutter, such as visually opaque obstacles has sparked a growing interest in through-the-wall radar imaging (TWRI) and ground-penetrating radar (GPR) in both military and civilian applications, such as homeland security, urban counterterrorism, search and rescue missions, and monitoring of the sick and elderly. This chapter outlines some of recent works in application of compressive sensing (CS) in synthetic aperture radar (SAR) and multiple-input multiple-output (MIMO) radar imaging and tracking of multiple targets simultaneously behind multilayer or multiple walls. It also discusses the use of CS in detection of human vital signatures in such a cluttered environment. The chapter concludes with a discussion on the design of a low complexity receiver system with reduced analog to digital converter requirements suitable for SAR, MIMO, ultra-wideband, or stepped frequency.
Pharmacological Studies on a New Antihypertensive Agent, S-2150, a Benzothiazepine Derivative: 2. Hypotensive Effects in Normotensive and Hypertensive Rats (1996)

S-2150 is a new 1,5-benzothiazepine derivative possessing both calcium channel-blocking and alpha 1-adrenoceptor-blocking effects. In isolated rat thoracic aorta precontracted with KCl (18 mM), the 50% inhibitory concentration (IC50) value was 190 nM for S-2150, which was similar to that of diltiazem. In aorta precontracted with phenylephrine (0.3 microM), IC50 values of S-2150 and diltiazem were 29 nM and > 10 microM, respectively. The relative contribution of calcium channel-blocking and alpha 1-adrenoceptor-blocking activities to hypotension was determined by using anesthetized rats before and after masking of the alpha 1-receptors with prazosin. The hypotensive effect of S-2150 [0.3 and 1 mg/kg intravenously (i.v.)] was attenuated by 40% after prazosin treatment, whereas that of diltiazem was not. In conscious spontaneously hypertensive rats (SHRs), renal hypertensive rats, and normotensive rats, S-2150 [10, 30, and 60 mg/kg orally (p.o.)] caused dose-dependent hypotensive effects. The effect of S-2150 was 4-7 times more potent than that of diltiazem. There were no changes in the hypotensive effects with consecutive administration of S-2150 during 6-8 weeks in SHRs and stroke-prone SHRs (SHRSPs). In SHRSPs, S-2150 reduced the mortality by stroke and small arterial hyperplasia in abdominal organs and also ameliorated renal excretory function. These results suggest that S-2150 may be a useful antihypertensive agent possessing both calcium-antagonistic and alpha 1-adrenoceptor-blocking effects.
Significance of the Geminal Dimethyl Group in the Odor Principle of <i>Ambrox</i>® (1985)

Abstract The diastereoisomeric 18‐nor‐ and 19‐norambrox ((6α)‐ and (6β)‐dodecahydro‐3a,6,9a‐trimethylnaphtho[2,1‐ b ]furans resp.) as well as the corresponding 18,19‐dinor‐derivatives (dodecahydro‐3a,9a‐dimethylnaphtho[2,1‐ b ]furans) have been synthesized and subjected to sensory evaluation. Threshold data and odor determination give an enlarged insight into the structure‐activity relationship (SAR) in ambrox‐type ambergris fragrances. As a general conclusion, the accumulation of axial CH 3 groups in the tricyclic ethers 1 – 12 leads to the strongest receptor affinity.
Aspects of inverse filtering for loudspeakers (2004)

The time-domain least squares approach and the frequency-domain deconvolution method for the calculation of inverse filters of a loudspeaker's IR are examined. The frequency-domain method is less robust than the time-domain method and regularization and complex smoothing help in improving the subjective performance of the inverse filter. The amount of regularization required is dependent on the IR that is to be inverted, and hence require hand-tuning for optimizing the subjective performance. The complex smoothing of the impulse response with a third octave smoother improves the subjective performance of the inverse filter and does not broaden the main pulse of the corrected IR.
Relationship between sperm concentration and the incidence of polyspermy in mouse embryos fertilized <i>in vitro</i> (1978)

Summary. A dose–response relationship between the incidence of polyspermy and sperm concentration was found by analysing chromosome preparations of first-cleavage mouse embryos derived from fertilizations in vitro with 3 concentrations of mouse spermatozoa (2 × 104, 2 × 10 6 and 1 × 107/ml).
The B Cell Response to Foot-and-Mouth Disease Virus in Cattle following Sequential Vaccination with Multiple Serotypes (2017)

Foot-and-mouth disease virus (FMDV) is a highly contagious viral disease. Antibodies are pivotal in providing protection against FMDV infection. Serological protection against one FMDV serotype does not confer interserotype protection. However, some historical data have shown that interserotype protection can be induced following sequential FMDV challenge with multiple FMDV serotypes. In this study, we have investigated the kinetics of the FMDV-specific antibody-secreting cell (ASC) response following homologous and heterologous inactivated FMDV vaccination regimes. We have demonstrated that the kinetics of the B cell response are similar for all four FMDV serotypes tested following a homologous FMDV vaccination regime. When a heterologous vaccination regime was used with the sequential inoculation of three different inactivated FMDV serotypes (O, A, and Asia1 serotypes) a B cell response to FMDV SAT1 and serotype C was induced. The studies also revealed that the local lymphoid tissue had detectable FMDV-specific ASCs in the absence of circulating FMDV-specific ASCs, indicating the presence of short-lived ASCs, a hallmark of a T-independent 2 (TI-2) antigenic response to inactivated FMDV capsid.<b>IMPORTANCE</b> We have demonstrated the development of intraserotype response following a sequential vaccination regime of four different FMDV serotypes. We have found indication of short-lived ASCs in the local lymphoid tissue, further evidence of a TI-2 response to FMDV.
Nuclear hormone receptors (2015)

AccessScience is an authoritative and dynamic online resource that contains incisively written, high-quality educational material covering all major scientific disciplines. An acclaimed gateway to scientific knowledge, AccessScience is continually expanding the ways it can demonstrate and explain core, trustworthy scientific information that inspires and guides users to deeper knowledge.
A Mercury-Catalyzed, High-Yield System for the Oxidation of Methane to Methanol (1993)

A homogeneous system for the selective, catalytic oxidation of methane to methanol via methyl bisulfate is reported. The net reaction catalyzed by mercuric ions, Hg(II), is the oxidation of methane by concentrated sulfuric acid to produce methyl bisulfate, water, and sulfur dioxide. The reaction is efficient. At a methane conversion of 50 percent, 85 percent selectivity to methyl bisulfate ( approximately 43 percent yield; the major side product is carbon dioxide) was achieved at a molar productivity of 10(-7) mole per cubic centimeter per second and Hg(II) turnover frequency of 10(-3) per second. Separate hydrolysis of methyl bisulfate and reoxidation of the sulfur dioxide with air provides a potentially practical scheme for the oxidation of methane to methanol with molecular oxygen. The primary steps of the Hg(II)-catalyzed reaction were individually examined and the essential elements of the mechanism were identified. The Hg(II) ion reacts with methane by an electrophilic displacement mechanism to produce an observable species, CH(3)HgOSO(3)H, 1. Under the reaction conditions, 1 readily decomposes to CH(3)OSO(3)H and the reduced mercurous species, Hg(2)(2+) The catalytic cycle is completed by the reoxidation of Hg(2)(2+) with H(2)SO(4) to regenerate Hg(II) and byproducts SO(2) and H(2)O. Thallium(III), palladium(II), and the cations of platinum and gold also oxidize methane to methyl bisulfate in sulfuric acid.
Carboxyethynyl Anchoring Ligands: A Means to Improving the Efficiency of Phthalocyanine‐Sensitized Solar Cells (2012)

Starre π-konjugierte Brücken wie die Ethinylgruppe sind geeignet, um das π-System eines Phthalocyanins effektiv an das Leitungsband von TiO2 zu koppeln. Eine Reihe von Zinkphthalocyanin-Photosensibilisatoren mit Carboxyethinyl-Ankergruppen wurde synthetisiert. Solarzellen, die mit der gezeigten Verbindung sensibilisiert wurden, zeigten Wirkungsgrade von 5.5 % und 6.1 % unter 100 (1 sun) bzw. 9.5 mW cm−2.
Dry-matter Production and Photosynthesis in Pine Seedlings (1966)

Growth analysis and photosynthesis measurements were carried out on first-year seedlings of Pinus radiata, P. contorta, and P. nigra. P. sylvestris was also included in two growth-analysis experiments. There appeared to be no difference in relative growth-rate (RGR) between the species mentioned, except between P. radiata and P. nigra. It was found that when the level of mineral nutrition was high, P. radiata had a higher RGR than P. nigra and that the reverse was true at low mineral nutrient levels. There was no difference in net assimilation rate (NAR) between the species, but NAR appeared to increase and decrease with mineral nutrient supply. Net photosynthesis per unit of leaf was somewhat higher in P. radiata than in P. contorta; P. nigra had a lower photosynthetic rate than either P. radiata or P. contorta.
MEMS endomicroscope for simultaneous bright-field microscopy and optical coherence tomography (2015)

We present the first silicon-based endomicroscope that combines wide field and confocal imaging modalities in a single device, whose functionality includes simultaneous operation of bright-field microscopy and optical coherence tomography (OCT). This highly-compact multi-modal probe is based on silicon bulk micromachining and has cross-sectional dimensions of 2×2.76mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . The achieved lateral resolutions are 6.2 μm and 17.8 μm for bright-field microscopy and OCT, respectively.
The Association Between ASA Status and Other Risk Stratification Models on Postoperative Intensive Care Unit Outcomes (2014)

Lupei, Monica I.*; Chipman, Jeffrey G.†; Beilman, Gregory J.†; Cristina Oancea, S.‡; Konia, Mojca R.§ Author Information
Imaging Carrier Inhomogeneities in Ambipolar Tellurene Field Effect Transistors (2019)

The development of van der Waals (vdW) homojunction devices requires materials with narrow bandgaps and simultaneously high hole and electron mobilities for bipolar transport, as well as methods to image and study spatial variations in carrier type and associated conductivity with nanometer spatial resolution. Here, we demonstrate the general capability of near-field scanning microwave microscopy (SMM) to image and study the local carrier type and associated conductivity in operando by studying ambiploar field-effect transistors (FETs) of the 1D vdW material tellurium in 2D form. To quantitatively understand electronic variations across the device, we produce nanometer-resolved maps of the local carrier equivalence backgate voltage. We show that the global device conductivity minimum determined from transport measurements does not arise from uniform carrier neutrality but rather from the continued coexistence of p-type regions at the device edge and n-type regions in the interior of our micrometer-scale devices. This work both underscores and addresses the need to image and understand spatial variations in the electronic properties of nanoscale devices.
The Effect of Repeated Controlled Ovarian Stimulation in Donors (2002)

At the authors' institution, most oocyte donors are healthy young women who agree to an anonymous and no-charge donation and who undergo controlled ovarian stimulation (COS) with fertility drugs with the goal of promotingmultiple follicle development. Some donors undergo consecutive COS cycles with differing intervals between stimulations. This retrospective study examined the effects of multiple COS on oocyte retrieval rates and oocyte quality (as reflected by the recipient's outcome). In a 6-year period, 284 donors had at least two cycles of COS. Their mean age was approximately 25 years. Nearly half the women were nulliparous. Donors were 18 to 35 years of age and had no personal or family history of congenital malformation or hereditary disease. The pituitary was desensitized by daily subcutaneous injections of 1 mg of leuprolide acetate, starting in the luteal phase. After menses the dose was halved until chorionic gonadotropin treatment, begun on day 3 after menses. Human menopausal gonadotropin and purified FSH were given if ultrasonography showed no follicle activity. The gonadotropin dosage was tailored to each patient's follicular response as assessed by ultrasonography and serum estradiol estimates. After two or more follicles reached 21 mm in maximum diameter, human chorionic gonadotropin was administered, and oocyte retrieval was scheduled 36 hours later. A total of 1684 oocyte donation cycles was completed in 1017 recipients. Embryo transfer was achieved in 87% of cases. Similar oocyte retrieval rates were maintained through consecutive cycles up to nine consecutive COS cycles in the same donor (Fig. 1). Among 43 donors with five stimulations, there were no differences in fertilization, implantation, or pregnancy rates according to the origin of the oocyte cycle (Fig. 2). Semen characteristics were equally distributed. No differences were found in oocytes retrieved or fertilization, implantation, or pregnancy rates according to the interval between consecutive COS cycles. Similar numbers of oocytes may be retrieved from healthy young volunteer donors during repeated cycles of COS. Oocyte quality is maintained through at least five repeated cycles. The interval between cycles does not affect the outcome of COS.
A Novel Synthetic Strategy for Pd3Sn Nanoparticles Loaded Reduced Graphene Oxide as Electrocatalyst for the Ethanol-Tolerant Oxygen Reduction Reaction (2015)

A novel, two-step chemical reduction route is suggested to synthesize highly active and well-dispersed Pd3Sn alloy nanoparticles supported on chemically reduced graphene oxide (rGO) for the alcohol-tolerant oxygen reduction reaction. In this work, molecular-level dispersions of individuals are easily obtained, and graphene oxide is served as the stablization agent for Pd3Sn nanoparticles, and as carbon support which is co-deposited with metal or alloy particles. Transmission electron microscopy, Raman and powder X-ray diffraction results show that Pd and Pd3Sn nanoparticles are finely-dispersed on multi-layer rGO with well-controlled particle sizes, dispersities and composition uniformities. Electrochemical measurements confirm that Pd3Sn/rGO exhibites higher oxygen reduction activity and alcohol-tolerant ability than the Pd/rGO thanks to the smaller sizes of Pd3Sn nanoparticles and the strong interaction between metal and rGO. This new strategy provides a facile route to synthesize multicomponent alloy loaded rGO composites for use in electro-catalysis.
ChemInform Abstract: Steric and Complexation Effects on the 1,4‐Addition Reaction of Lithium Dimethylcuprate with Rigid α,β‐Unsaturated Ketones. (1999)

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.
On practical setting of detection thresholds (1969)

In the practical setting of a threshold to implement the Neyman-Pearson criterion, the received noise power must be measured. The tradeoffs which take place between measurement accuracy, false-alarm probability, and detection probability are considered.
Diagnostic value of kidney biopsy in heterozygous Fabry's disease. (1985)

We studied a case of abnormal renal pathologic findings in a female patient that were suggestive of Fabry's disease. Except for corneal clouding, no other clinical findings were consistent with this diagnosis. The serum and urinary enzyme levels were all within normal limits; the ceramide trihexoside level was slightly increased in the urine. We examined the pathologic changes in the context of the present knowledge of renal lesions in storage diseases.