gebhart/patrepeval huggingface dataset:
2.5 GHz-range SAW propagation and reflection characteristics and application to passive electronic tag and matched filter (1993)

Surface acoustic waves have been applied in various electronic devices. A signal processing device using SAW is one of the important applications. The devices operating at higher frequencies should be developed. In this paper, 2.5 GHz-range SAW excitation, propagation and reflection characteristics are experimentally investigated. The attenuation of SAW on 128° Y-X LiNbO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> is 0.0035 dB/λ and 0.026 dB/λ (with distributed reflector electrodes) at 2.5 GHz. SAW reflection coefficients of various types of electrode (conventional short and open type, IDT type, positive and negative reflection type and double IDT type operating at 3rd harmonics, etc.) are examined. The characteristics of the coded signal for the passive electronic tag using the distributed reflection electrodes show the good results. Time domain characteristics from frequency domain characteristics are experimentally and theoretically studied using inverse-Fourier transformation. The code signal intensities at time domain show around 50 dB insertion loss without matching condition. Also, matched filter devices using the above devices are obtained
Building an electronic scientific community (2002)

The Community Systems project is building an electronic scientific community, by collecting 'all' the knowledge of a scientific community into a digital library and developing the systems technology to transparently manipulate this library over nationwide networks. The community members are scientists studying the nematode worm C. elegans, a model organism in molecular biology. The community system will encode their knowledge into an information space, with the goal of supporting retrieval and annotation of formal and informal data and information for any biologist with a personal computer and a NREN connection. The paper introduces community systems, the worm community and its knowledge, technology and sociology solutions, and an evolving prototype with plans for its propagation.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Design &amp; implementation of ARM based data acquisition system (2011)

The Rapid development of technologies in the field of electronics has brought tremendous changes in every walk of human life without being limited to any particular field. Starting with many transistors and other electronic components to embedding of large number of transistors along with in numerable other electronic components in a single chip, that too in a compact single chip, with the properties of diverse/ different functions. And these developments in electronics have also entered the ever growing field of industrial processes, viz., optimization of production, safety related aspects etc. The Design & Implementation of ARM Based Data Acquisition System presented here is an intelligent remote unit based on embedded technology for data acquisition, monitoring and output control. This system is very much compact in design, as it uses a highly integrated 32-bit RISC microcontroller along with serial A/D and D/A converters. This Device has high performance and offers the widest range of features viz., flexibility, reliability, durability, when compared with conventional and old solutions to control and data acquisition. The capabilities of input and output are expandable to maximize the functions of the system and also can be used for different applications in real time environment to control and data acquisition. Besides being a single stand-alone system, the tasks like the control, supervision, data acquisition can even be accomplished through Ethernet within the local area network (LAN) of an industrial area.
Identification and Characterization of Pharmacological Chaperones to Correct Enzyme Deficiencies in Lysosomal Storage Disorders (2011)

Many human diseases result from mutations in specific genes. Once translated, the resulting aberrant proteins may be functionally competent and produced at near-normal levels. However, because of the mutations, the proteins are recognized by the quality control system of the endoplasmic reticulum and are not processed or trafficked correctly, ultimately leading to cellular dysfunction and disease. Pharmacological chaperones (PCs) are small molecules designed to mitigate this problem by selectively binding and stabilizing their target protein, thus reducing premature degradation, facilitating intracellular trafficking, and increasing cellular activity. Partial or complete restoration of normal function by PCs has been shown for numerous types of mutant proteins, including secreted proteins, transcription factors, ion channels, G protein-coupled receptors, and, importantly, lysosomal enzymes. Collectively, lysosomal storage disorders (LSDs) result from genetic mutations in the genes that encode specific lysosomal enzymes, leading to a deficiency in essential enzymatic activity and cellular accumulation of the respective substrate. To date, over 50 different LSDs have been identified, several of which are treated clinically with enzyme replacement therapy or substrate reduction therapy, although insufficiently in some cases. Importantly, a wide range of in vitro assays are now available to measure mutant lysosomal enzyme interaction with and stabilization by PCs, as well as subsequent increases in cellular enzyme levels and function. The application of these assays to the identification and characterization of candidate PCs for mutant lysosomal enzymes will be discussed in this review. In addition, considerations for the successful in vivo use and development of PCs to treat LSDs will be discussed.
Molecular Mechanism of Type I Collagen Homotrimer Resistance to Mammalian Collagenases (2010)

Type I collagen cleavage is crucial for tissue remodeling, but its homotrimeric isoform is resistant to all collagenases. The homotrimers occur in fetal tissues, fibrosis, and cancer, where their collagenase resistance may play an important physiological role. To understand the mechanism of this resistance, we studied interactions of alpha1(I)(3) homotrimers and normal alpha1(I)(2)alpha2(I) heterotrimers with fibroblast collagenase (MMP-1). Similar MMP-1 binding to the two isoforms and similar cleavage efficiency of unwound alpha1(I) and alpha2(I) chains suggested increased stability and less efficient unwinding of the homotrimer triple helix at the collagenase cleavage site. The unwinding, necessary for placing individual chains inside the catalytic cleft of the enzyme, was the rate-limiting cleavage step for both collagen isoforms. Comparative analysis of the homo- and heterotrimer cleavage kinetics revealed that MMP-1 binding promotes stochastic helix unwinding, resolving the controversy between different models of collagenase action.
Functional characteristics of tumor vessels: selective increase in tumor blood flow. (1989)

This experiment was carried out to elucidate how tumor microcirculation differs from that of normal tissues. Pressure-flow relationship was examined in normal rat tissues, uninvolved tissues in tumor-bearing rats, transplanted AH109A solid tumors, and primary tumors induced by 3-methylcholanthrene. Tumor blood flow was measured by the hydrogen clearance technique. The blood pressure was elevated by continuous iv infusion of angiotensin II. Elevation of blood pressure produced a several-fold increase in tumor blood flow without increasing blood flow in normal tissue and uninvolved tissue in tumor-bearing rats. The increase was selective to tumor tissues as long as the mean arterial blood pressure remained under about 150 mmHg. The lower the resting tumor blood flow, the greater the increase in the flow was at induced hypertension. There were no significant differences in the resting blood flow and in the rate of flow change at induced hypertension between the intramuscularly transplanted tumor, the intrahepatically transplanted tumor, and the sc transplanted tumor. These results indicate that the delivery of systemically administered anticancer drugs could be selectively enhanced in tumor tissues by induced hypertension.
Interface morphology studies of (110) and (111) Ge-GaAs grown by molecular beam epitaxy (1982)

Interface morphologies of (110) and (111) Ge-GaAs grown by molecular beam epitaxy (MBE) have been studied using reflection high energy electron diffraction (RHEED). For the (110) Ge- GaAs, planar growths of both GaAs on Ge and Ge on GaAs are observed. The (111) Ge-GaAs, on the other hand, shows a rough growth of GaAs on Ge, and a planar one of Ge on GaAs, similar to those of (100) Ge-GaAs. The (110) and (111) results are discussed in terms of the orientation effect on the MBE growth of compound semiconductors and are consistent with that on (100) Ge-GaAs.
Genetic aspects of embryonic eye development in vertebrates (1996)

The vertebrate eye comprises tissues from different embryonic origins, e.g., iris and ciliary body are derived from the wall of the diencephalon via optic vesicle and optic cup. Lens and cornea, on the other hand, come from the overlying surface ectoderm. The timely action of transcription factors and inductive signals ensure the correct development of the different eye components. Establishing the genetic basis of eye defects has been an important tool for the detailed analysis of this complex process. One of the main control genes for eye development was discovered by the analysis of the allelic series of the Small eye mouse mutants and characterized as Pax6. It is involved in the interaction between the optic cup and the overlaying ectoderm. The central role for Pax6 in eye development is conserved throughout the animal kingdom as the murine Pax6 gene induces ectopic eyes in transgenic Drosophila despite the obvious diverse organization of the eye in the fruit fly compared to vertebrates. In human, mutations in the PAX6 gene are responsible for aniridia and Peter's anomaly. In addition to Pax6, other mutations affecting the interaction of the optic cup and the lens placode have been documented in the mouse. For the differentiation of the retina from the optic cup several genes are responsible: Mi leads to microphthalmia, if mutated, and encodes for a transcription factor, which is expressed in the melanocytes of the pigmented layer of the retina. In addition, further genes are implicated in the correct development of the retina, e.g., Chx10, Dlx1, GH6, Msx1 and -2, Otx1 and -2, or Wnt7b. Mutations within the retinoblastoma gene (RB1) are responsible for retinal tumors. Knock-out mutants of RB1 exhibit a block of lens differentiation prior to the retinal defect. Besides the influence of Rb1, the lens differentiates under the influence of growth factors (e.g., FGF, IGF, PDGF, TGF), and specific genes become activated encoding cytoskeletal proteins (e.g., filensin, phakinin, vimentin), structural proteins (e.g., crystallins) or membrane proteins (e.g., Mip). The optic nerve originates from the neural retina; ganglion cells grow to the optic stalk, forming the optic nerve. Its retrograde walk to the brain through the rudiment of the optic stalk depends on the correct Pax2 expression.
A high speed self-biased CMOS amplifier IP core (2005)

A novel high speed 0.25 /spl mu/m CMOS amplifier IP core is presented which use the complementary self-biasing differential amplifier technique. The proposed amplifier features a 418 MHz unity gain frequency and 375 V//spl mu/s slew rate with capacitive load 2pF. The output voltage of the proposed amplifier swings from Vgnd to Vdd and the static power less than 0.32 /spl mu/W. A Verilog-A behavioral model is presented for the amplifier IP core which contains the important non-idealities of the amplifier.
The superoxide generating system of B cell lines. Structural homology with the phagocytic oxidase and triggering via surface Ig. (1988)

EBV-transformed B lymphocyte cell lines (EBV-BLCL) produce superoxide after stimulation with phorbol ester, a capacity unique among nonmyeloid cells. The superoxide producing system of EBV-BLCL (B cell oxidase) was compared with the phagocytic NADPH-oxidase and the relationship of the capacity to produce superoxide to the presence of the EBV-genome was analyzed. The two EBV-transformed B cell lines F1 and HELL generated superoxide in response to PMA (2.3 nmol/10(6) F1 cells x 1 h and 6.27 nmol/10(6) HELL cells x 1 h with 1 microgram/ml of PMA), whereas no superoxide release was detected with the EBV-positive Burkitt lymphoma line WIL-2 and the EBV-negative plasmocytoma line U-266. Also, F1 and HELL showed lucigenin-dependent chemiluminescence (CL) after PMA-treatment, whereas no CL responses were detected from WIL-2 or U-266. Further, F1 and HELL cells contained a low potential cytochrome b-245 (10.9 and 61.0 pmol/mg protein, respectively) and also a 45 kDa diphenylene-iodonium (DPI)-binding peptide, both components of the phagocytic NADPH-oxidase. In contrast, neither the cytochrome b-245 nor the 45 kDa DPI-binding peptide were detected in WIL-2 and U-266. In addition, DPI inhibited O2- production by PMA-stimulated EBV-BLCL and polymorphonuclear granulocytes. Further, F1 line cells showed superoxide dismutase-inhibitable lucigenin-dependent CL when triggered by protein A-bearing staphylococci (Cowan strain I) or by a mAb directed against human IgG in the presence of solid-phase goat anti-mouse-Ig antibody. From a panel of eight EBV-BLCL, only five responded with CL when exposed to protein A-bearing staphylococci, whereas all showed CL when treated with phorbol ester. Inasmuch as all eight EBV-BLCL possessed surface Ig and a "functional" oxidase, their differential response to cross-linking of surface Ig may be determined by differences in signal transduction. Superoxide production by EBV-BLCL appears thus related to expression of an electron transport chain structurally homologous, if not identical, with the "phagocytic" NADPH-oxidase. Apparently, the presence of EBV-genome in B cell lines does not per se lead to expression of this oxidase. This suggests that nontransformed B cells may, at a certain differentiation stage, also express a superoxide-generating chain. From the finding of stimulation of superoxide production of EBV-BLCL via surface Ig it appears possible that also Ag may be able to trigger such B cells to production of superoxide which might have an important role in the physiology of B cells.
Letters from New York (1956)

Letters written to her parents during the year when she had a Fullbright Scholarship and studied at the State University of New York 
Quantity: 1 folder(s). 
Physical Description: Holographs
Axiomatic attribution for multilinear functions (2011)

We study the attribution problem. That is, given a real-valued characteristic function f of n variables and initial and final values r and s for its independent variables, our objective is to divide the responsibility for the change f(s) - f(r) in the characteristic function among each of its independent variables. We call these assigned responsibilities attributions, and we would like the attributions to form a complete partition of the total change. When r=0, the attribution problem coincides with a standard cost sharing model from the social choice literature (cf. Moulin [2]), where the characteristic function is the cost function, the independent variables are the demands of the agents, and the attributions are cost shares for the agents. We follow the cost sharing literature in identifying good attribution methods axiomatically (for a classical example, see Friedman and Moulin [1]). We consider: Additivity -- attributions are additive in the characteristic function, Dummy -- if the characteristic function does not depend on a variable, then its attribution is zero, and Affine Scale Invariance -- attributions are invariant under simultaneous affine transformation of the characteristic function and the variables.
Effects of competitive carbon monoxide adsorption on the hydrogen response of metal–insulator–semiconductor sensors: the role of metal film morphology (2003)

We have investigated the effects of carbon monoxide coadsorption on the performance of hydrogen-sensitive palladium metal–insulator–semiconductor (MIS) sensors, and have found that device performance is highly dependent on the morphology of the metal film. On smooth, continuous films, experiments utilizing H2/CO mixtures show that CO induces a time-delayed increase in response to H2. Based on a kinetic model of CO and hydrogen adsorption on the Pd film, this increase is interpreted as being due to trapping of H atoms at the Pd–SiO2 interface by CO adsorbed on the metal surface. However, MIS sensors fabricated so that a large concentration of voids exist in the metal film respond in a markedly different fashion: on these devices, the addition of CO causes a time-delayed decrease in the sensor response. Possible explanations for this attenuating CO effect are discussed. The experimental and modeling results presented here suggest that sensor behavior in the presence of competitively adsorbing mixtures can be quite complex, with film imperfections playing an important role in determining the response.
Low-voltage operation of ferroelectric poly(vinylidene fluoride-trifluoroethylene) copolymer capacitors and metal-ferroelectric-insulator-semiconductor diodes (2007)

Exceptionally low-voltage operation of organic ferroelectric capacitors and diodes was demonstrated. Ferroelectric polyvinylidene fluoride-trifluoroethylene [P(VDF-TrFE)] thin films were prepared by the solvent-cast method. Metal-ferroelectric-metal capacitors with 60-nm-thick P(VDF-TrFE) films exhibited well-saturated hysteresis curves whose coercive voltage (Vc) and remanent polarization (Pr) were 2.0V and 11.9μC∕cm2, respectively. The authors also fabricated metal-ferroelectric-insulator-semiconductor diodes with 100-nm-thick P(VDF-TrFE) films. Rectangular-shaped capacitance-voltage (C-V) hysteresis loops were obtained with a voltage sweep range narrower than 5V. The maximum memory window of 4.7V was achieved.
Reductive evolution in Streptococcus agalactiae and the emergence of a host adapted lineage (2013)

Our results show that the early phase of genome reduction during host specialization mostly involves accumulation of small and likely reversible indels, followed by a second evolutionary step marked by a higher frequency of large deletions.
Forces Exerted During Spinal Manipulative Therapy (1993)

Spinal manipulative therapy has been widely recognized in the medical fields as a conservative treatment modality for spinal dysfunction and pain. Spinal manipulative therapy consists of an application of a thrusting force on a specific part of the spine in a well-defined direction. The magnitude of this force has been associated with positive treatment effects, such as realigning vertebral bodies, mobilizing spinal joints, relaxing back musculature through reflex pathways, and producing a respiratory burst. However, direct force measurements during spinal manipulative therapy in a clinically relevant situation have not been performed to date. The purpose of this study was to measure the forces exerted onto patients during spinal manipulative therapy on various locations of the spinal column. Force measurements were obtained using a thin, flexible pressure mat. The results indicate that peak and preload forces are considerably smaller for spinal manipulative therapy performed on the cervical spine compared to corresponding values obtained on the thoracic spine and sacroiliac joint. Furthermore, for treatments on the thoracic spine and sacroiliac joint, a significant relation was found to exist between preload and peak forces.
Steric Rejection of Polymeric Solutes by Membranes with Uniform Pore Size Distribution (1981)

Abstract The analysis of steric rejection by membranes with uniform pore size distribution is described. The uncharged polymeric solutes (polyethylene oxides, dextrans) are modeled as hard spheres, and the rejection in capillaries is corrected for hydrodynamic lag. The experimental data obtained with Carbowax and Dextran T solutes and track-etched Nuclepore membranes support the general validity of this model. Both single solute rejection data as well as GPC-monitored rejection data obtained with blend solutions are in good agreement with the theory.
Structured low-density parity-check codes with bandwidth efficient modulation (2009)

In this work, we study the performance of structured Low-Density Parity-Check (LDPC) Codes together with bandwidth efficient modulations. We consider protograph-based LDPC codes that facilitate high-speed hardware implementations and have minimum distances that grow linearly with block sizes. We cover various higherorder modulations such as 8-PSK, 16-APSK, and 16-QAM. During demodulation, a demapper transforms the received in-phase and quadrature samples into reliability information that feeds the binary LDPC decoder. We will compare various low-complexity demappers and provide simulation results for assorted coded-modulation combinations on the additive white Gaussian noise and independent Rayleigh fading channels.
Constrained Optimization of Spatial Sampling using Continuous Simulated Annealing (1998)

Abstract Spatial sampling is an important issue in environmental studies because the sample configuration influences both costs and effectiveness of a survey. Practical sampling constraints and available preinformation can help to optimize the sampling scheme. In this paper, spatial simulated annealing (SSA) is presented as a method to optimize spatial environmental sampling schemes. Sampling schemes are optimized at the point‐level, taking into account sampling constraints and preliminary observations. Two optimization criteria have been used. The first optimizes even spreading of the points over a region, whereas the second optimizes variogram estimation using a proposed criterion from the literature. For several examples it is shown that SSA is superior to conventional methods of designing sampling schemes. Improvements up to 30% occur for the first criterion, and an almost complete solution is found for the second criterion. Spatial simulated annealing is especially useful in studies with many sampling constraints. It is flexible in implementing additional, quantitative criteria.
RETRACTED: Numerical modeling of hydraulic fracture propagation: Accounting for the effect of stresses on the interaction between hydraulic and parallel natural fractures (2013)

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of According to EGYJP committee’s decision and after precise investigation ,It is ultimately obvious that the article titled: “Numerical Modeling of Hydraulic Fracture Propagation: Accounting for the Effect of Stresses on The Interaction Between Hydraulic and Parallel Natural Fractures” by its auther Jaber Taheri Shakib is totally plagiarized from the thesis titled: “Analysis of hydraulic fracture propagation in fractured reservoirs: an improved model for the interaction between induced and natural fractures” by Arash Dahi Taleghani; http://hdl.handle.net/2152/18381; beginning from the abstract passing through chapter 3. Even the conclusion of chapter 3 is copied directly from the thesis: “Analysis of hydraulic fracture propagation in fractured reservoirs: an improved model for the interaction between induced and natural fractures” A matter which leads the committee to take its final decision of retracting the mentioned article from volume no. 22 issue 4 and blacklisting its author Dr. Jaber Taheri Shakib from our journal. Hoping that this decision is taken promptly from your honored side.