gebhart/patrepeval huggingface dataset:
A 128-Stage Analog Accumulator for CMOS <newline/>TDI Image Sensor (2014)

The impacts of parasitic phenomenon on the performance of the analog accumulator in CMOS TDI image sensor are analyzed in this paper, and a modified accumulator with decoupling capacitor Cd to combat the parasitic phenomenon is also proposed. A 128-stage modified accumulator is designed and simulated. A prototype 1024 × 128 CMOS TDI image sensor with the 128-stage modified accumulator is fabricated in 0.18- μm one-poly four-metal 1.8 V/3.3 V CMOS technology. With a line rate of 3875 lines/s, at 128 stages the measured sensitivity and SNR improvement of the fabricated sensor are 617.1 V/lux·s and 16.6 dB respectively. The simulation and experiment results have proved the effectiveness of the decoupling capacitor C <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">d</sub> when combating the parasitic phenomenon in the analog accumulator. The proposed modified accumulator is suitable for application in CMOS TDI image sensor with high stages.
Wireless power transfer with metamaterials (2011)

In this paper, wireless power transfer based on resonant coupling with metamaterials is studied. We show with numerical studies that the coupling between transmitter and receiver can be enhanced, and the power transfer efficiency can be improved by metamaterials. A prototype wireless power transfer system and a metamaterial is designed and built. Experiment results prove the efficiency improvement with the fabricated metamaterial. The system with metamaterial is capable of transferring power wirelessly at roughly double the efficiency of the same system without a metamaterial.
Properties of Novel Selective Ion Exchangers for Nuclear Plant Applications (1987)

AbstractA new family of ion exchange and sorption media has been developed and applied for the removal of radioactive contaminants from aqueous streams in nuclear power plant operations. The general principle in the development of these materials is optimization of their selectivity for species that significantly contribute to the radioactivity of these streams (e.g., cesium, iodine, and cobalt) in the presence of a large excess of other ions (e.g., sodium, potassium, magnesium, calcium, chlorine, and SO4). This results in improved effective capacity and service lifetime of these new materials compared with the performance of conventional broad-spectrum ion exchange resins. Other advantages include higher decontamination factors, shorter contact times, greater stability, and convenience of disposals. Examples of the new materials include Durasil™ 10, a high-capacity ion exchange medium for cesium and strontium, and Durasil™ 60 and 70, which are highly effective in the removal of iodine and cobalt, respectively. The performance of these new media has been characterized in laboratory studies, engineering-scale demonstration tests, and 1 to 2 yr of experience with the Durasil™ media in routine waste-water treatment in several nuclear power plants.
Mid-Infrared Waveguides for Volatile Organic Compounds Detection (2019)

Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text T. Jin, J. Zhou, and P. T. Lin, "Mid-Infrared Waveguides for Volatile Organic Compounds Detection," in Optical Sensors and Sensing Congress (ES, FTS, HISE, Sensors), OSA Technical Digest (Optica Publishing Group, 2019), paper EW2A.2. Export Citation BibTex Endnote (RIS) HTML Plain Text Citation alert Save article
High-Density Linkage Maps and Sex-Linked Markers for the Black Tiger Shrimp (<i>Penaeus monodon</i>) (2008)

We report on the construction of sex-specific high-density linkage maps and identification of sex-linked markers for the black tiger shrimp (Penaeus monodon). Overall, we identified 44 male and 43 female linkage groups (2n = 88) from the analysis of 2,306 AFLP markers segregating in three full-sib families, covering 2,378 and 2,362 cM, respectively. Twenty-one putatively homologous linkage groups, including the sex-linkage groups, were identified between the female and male linkage maps. Six sex-linked AFLP marker alleles were inherited from female parents in the three families, suggesting that the P. monodon adopts a WZ-ZZ sex-determining system. Two sex-linked AFLP markers, one of which we converted into an allele-specific assay, confirmed their association with sex in a panel of 52 genetically unrelated animals.
ChemInform Abstract: SYNTHESIS OF 3‐(4‐ACYLAMINOPIPERAZIN‐1‐YLALKYL)INDOLES AS POTENTIAL ANTIHYPERTENSIVE AGENTS (1978)

Abstract Aus den Indolen (I) erhält man mit Oxalylchlorid die 3‐Substitutionsprodukte (II), die mit N‐Nitroso‐piperazin zu (III) substituiert werden.
Using Crosswell Data To Enhance History Matching (2014)

Abstract One of the most challenging tasks in the oil industry is the production of reliable reservoir forecast models. Due to different sources of uncertainties in the numerical models and inputs, reservoir simulations are often only crude approximations of the reality. This problem is mitigated by conditioning the model with data through data assimilation, a process known in the oil industry as history matching. Several recent advances are being used to improve history matching reliability, notably the use of time-lapse data and advanced data assimilation techniques. One of the most promising data assimilation techniques employed in the industry is the ensemble Kalman filter (EnKF) because of its ability to deal with non-linear models at reasonable computational cost. In this paper we study the use of crosswell seismic data as an alternative to 4D seismic surveys in areas where it is not possible to re-shoot seismic. A synthetic reservoir model is used in a history matching study designed better estimate porosity and permeability distributions and improve the quality of the model to predict future field performance. This study is divided in three parts: First, the use of production data only is evaluated (baseline for benchmark). Second, the benefits of using production and 4D seismic data are assessed. Finally, a new conceptual idea is proposed to obtain time-lapse information for history matching. The use of crosswell time-lapse seismic tomography to map velocities in the interwell region is demonstrated as a potential tool to ensure survey reproducibility and low acquisition cost when compared with full-scale surface surveys. Our numerical simulations show that the proposed method provides promising history matching results leading to similar estimation error reductions when compared with conventional history matched surface seismic data.
Molecular Cloning and Characterization of a Tobacco MAP Kinase Kinase That Interacts with SIPK (2000)

A tobacco MAP kinase termed SIPK (Salicylic acid-Induced Protein Kinase) is activated in response to a variety of stress signals, including pathogen attack and wounding (S. Zhang and D.F. Klessig, Proc. Natl. Acad. Sci. USA 95:7225-7230, 1998; S. Zhang and D.F. Klessig, Proc. Natl. Acad. Sci. USA 95:7433-7438, 1998). Using the yeast two-hybrid system, we have identified a gene encoding a protein that interacts with SIPK but not the wounding induced protein kinase (WIPK), which is another tobacco MAP kinase. Sequence analysis indicated that this SIPK-interacting protein is a member of the MAP kinase kinase family; thus, it was named SIPK kinase (SIPKK). Co-immunoprecipitation experiments demonstrated that SIPKK and SIPK interact in vitro. Consistent with its putative function as a kinase, SIPKK phosphorylated myelin basic protein in vitro. Interestingly, SIPKK was induced at the mRNA level after Tobacco mosaic virus (TMV) infection or wounding, albeit with kinetics that are too slow to account for the activation of SIPK following these stimuli.
<title>4X4 Electro-Optical Matrix Switch For Fiber Optic Networks</title> (1982)

A new optical switching component for multimode fiber-optic networks has been developed. This voltage-controlled switch is an 8-port device coupled by GRINrod lenses to four input fibers and to four output fibers (graded index, 50-μm core diameter). The matrix switches light from any input to any output, and four simultaneous input-output connections are made. There are 24 such states. Switching is done via controlled reflection from two layers of nematic liquid crystal. This switch is the first multimode, electro-ontic, fiber-optic matrix. Construction is simple and compact, using only four glass prisms and two liquid crystal layers. The matrix architecture is based on a new dual-switching-array concept that provides very low levels of optical crosstalk, more than 53 dB below the optical input level. The 5-ms on/off response time is faster than that of electro--mechanical matrices, although the 40 Vrms addressing voltage is higher. The optical insertion loss had a minimum value of 6 dB and an average value of 15 dB. The latter is due to misalignment of fibers during attachment to the switch, which can be remedied. Because the present switch does not use moving parts, it is quite reliable.
Fire-retardant covering for small containers (1979)

Flexible intumescent sheets of exceptionally uniform thickness may be used to protect containers and other small objects less than 25.4 cm in diameter from fire hazards.
Novel Synthesis of Orthopaedic Implant Materials (2002)

Co and Ti based alloys, as well as stainless steels, are the major metallic materials used for orthopaedic products. Among these, CoCrMo alloys demonstrate perhaps the most useful balance of resistance to corrosion, fatigue and wear, along with strength and biocompatibility. Currently, these alloys are produced by conventional furnace technology. In the present work, the authors report a novel technique, low-pressure combustion synthesis, to obtain pore-free CoCrMo orthopaedic implants without applied force in a single step. The materials show unique microstructures and enhanced properties.
Investigation of Thermoacoustic Stability Limits of an Annular Gas Turbine Combustor Test-Rig With and Without Helmholtz-Resonators (2005)

Providing gas turbine combustion chambers with Helmholtz-resonators is a promising approach for extending the operating range of gas turbines towards higher thermal power input whilst minimizing the risk of thermoacoustic instabilities. The work currently being reported gives an overview of experimental and computational analyses carried out for a full annular combustor test-rig located at Gioia del Colle in Italy. The thermoacoustic stability characteristics of this test-rig were thoroughly analyzed both for a base configuration without Helmholtz-resonators and for an extended configuration with 14 Helmholtz-resonators. An increase of power input to the combustor by 8.5–20% can be realized when the test-rig is equipped with resonators. The experimental analyses are reproduced by a computational model.
Catalytic Nanoceria Are Preferentially Retained in the Rat Retina and Are Not Cytotoxic after Intravitreal Injection (2013)

Cerium oxide nanoparticles (nanoceria) possess catalytic and regenerative radical scavenging activities. The ability of nanoceria to maintain cellular redox balance makes them ideal candidates for treatment of retinal diseases whose development is tightly associated with oxidative damage. We have demonstrated that our stable water-dispersed nanoceria delay photoreceptor cell degeneration in rodent models and prevent pathological retinal neovascularization in vldlr mutant mice. The objectives of the current study were to determine the temporal and spatial distributions of nanoceria after a single intravitreal injection, and to determine if nanoceria had any toxic effects in healthy rat retinas. Using inductively-coupled plasma mass spectrometry (ICP-MS), we discovered that nanoceria were rapidly taken up by the retina and were preferentially retained in this tissue even after 120 days. We also did not observe any acute or long-term negative effects of nanoceria on retinal function or cytoarchitecture even after this long-term exposure. Because nanoceria are effective at low dosages, nontoxic and are retained in the retina for extended periods, we conclude that nanoceria are promising ophthalmic therapeutics for treating retinal diseases known to involve oxidative stress in their pathogeneses.
Viscoelastic parameter estimation based on spectral analysis (2008)

This paper introduces a new technique for the robust estimation of relaxation-time distribution in tissue. The main novelty is in the use of the phase of transfer functions calculated from a time series of strain measurements at multiple locations. Computer simulations with simulated measurement noise demonstrate the feasibility of the approach. An experimental apparatus and software were developed to confirm the simulations. The setup can be used both as a rheometer to characterize the overall mechanical properties of a material or as a vibro-elastography imaging device using an ultrasound system. The algorithms were tested on tissue mimicking phantoms specifically developed to exhibit contrast in elasticity and relaxation time. The phantoms were constructed using a combination of gelatin and a polyvinyl alcohol sponge to produce the desired viscoelastic properties. The tissue parameters were estimated and the elasticity and relaxation time of the materials have been used as complementary features to distinguish different materials. The estimation results are consistent with the rheometry, verifying that the relaxation time can be used as a complementary feature to elasticity to delineate the mechanical properties of the phantom.
Common frequency pattern for music preference identification using frontal EEG (2013)

In this paper, we investigate the use of 2-channel frontal EEG signal to classify two music preferences: like and dislike. The hypothesis for this investigation is that the frontal EEG signal contains sufficient information on the mental state of a subject for discriminating the preference of music of the subject. An experiment is performed to collect 2-channel frontal EEG data from 12 subjects by playing various types of music pieces and asking whether they like or dislike the music in order to obtain the true labels of their music preferences. We then propose a frequency band optimization method called common frequency pattern (CFP) for feature extraction and Linear SVM for classification to identify the music preference of the subjects from the 2-channel frontal EEG. The results of using the proposed method yield an average classification accuracy of 74.77% for a trial length of 30 s over the 12 subjects. Hence the experimental results show evidence that frontal EEG signal contains sufficient information to discriminate preference of music. Furthermore, the frequency band optimization results indicate that gamma band is essential for EEG-based music preference identification.
Photo-enhanced negative differential resistance and photo-accelerated time-dependent dielectric breakdown in thin nitride-oxide dielectric film (2001)

Photo-enhanced negative differential resistance (NDR) and photo-accelerated time-dependent dielectric breakdown (TDDB) were observed in thin nitride–oxide (N–O) dielectric film biased with gate negative under tungsten lamp illumination. The photo-induced leakage current and photo-accelerated TDDB show dramatic asymmetry under negative and positive gate bias with constant photo-illumination. Our experiments suggest a unique current conduction mechanism in this nitride thin film. A two-carrier conduction induced positive feedback transport process under negative gate bias, and a two-carrier conduction induced self-limiting transport process under positive gate bias are proposed to qualitatively explain the experimental data. The nitride thin film device possessing a light-enhanced NDR can be employed to develop Si-based optoelectronic devices such as switching and logic control.
Stable spaces for real-time clothing (2010)

We present a technique for learning clothing models that enables the simultaneous animation of thousands of detailed garments in real-time. This surprisingly simple conditional model learns and preserves the key dynamic properties of a cloth motion along with folding details. Our approach requires no a priori physical model, but rather treats training data as a "black box." We show that the models learned with our method are stable over large time-steps and can approximately resolve cloth-body collisions. We also show that within a class of methods, no simpler model covers the full range of cloth dynamics captured by ours. Our method bridges the current gap between skinning and physical simulation, combining benefits of speed from the former with dynamic effects from the latter. We demonstrate our approach on a variety of apparel worn by male and female human characters performing a varied set of motions typically used in video games ( e.g. , walking, running, jumping, etc. ).
Modeling and data analysis of a palladium membrane reactor for tritiated impurities cleanup (1995)

A Palladium Membrane Reactor (PMR) is under consideration for the tritium plant for the International Thermonuclear Experimental Reactor (ITER). The ITER reactor exhaust will contain tritiated impurities such as water and methane. Tritium will need to be recovered from these impurities for environmental and economic reasons. For this purpose a promising device, PMR, has been proposed. The PMR is a combined permeator and catalytic reactor. Shift catalysts are used to foster reactions such as water-gas shift, H{sub 2}O + CO {yields} H{sub 2} + CO{sub 2}, and methane steam reforming, CH{sub 4} + H{sub 2}O {yields} 3H{sub 2} + CO. Due to thermodynamic limitations these reactions only proceed to partial completion. Thus, a Pd/Ag membrane, which is exclusively permeable to hydrogen isotopes, is incorporated into the reactor. By maintaining a vacuum on the permeate, product hydrogen isotopes are removed, enabling the reactions to proceed to completion. A model has been developed to study the complex interactions in a PMR so that the optimal design can be determined. The model accounts for the coupled effects of transport-limited permeation of hydrogen isotopes and chemical reactions. The permeation model is an extension of previous models that include the effects of temperature, wall thickness, reaction-side pressure, and permeate-side pressure. Reaction rates for methane steam reforming and the water-gas shift reaction are incorporated into the model along with the respective reverse reactions. The model is compared to PMR data and used to investigate the concentration and pressure profiles in the reactor. Due to the interactions of permeation and reaction complex profiles can be produced in a PMR. For example, the water concentration often increases after the inlet to the PMR to a maximum value, and then decreases to the low values expected with a PMR. Detailed information like this is required for the design and optimization of PMRs for the ITER tritium plant.
Simple and robust image-based autofocusing for digital microscopy (2008)

A simple image-based autofocusing scheme for digital microscopy is demonstrated that uses as few as two intermediate images to bring the sample into focus. The algorithm is adapted to a commercial inverted microscope and used to automate brightfield and fluorescence imaging of histopathology tissue sections.
Genome wide association study identifies novel single nucleotide polymorphic loci and candidate genes involved in soybean sudden death syndrome resistance (2019)

Fusarium virguliforme is a soil borne root pathogen that causes sudden death syndrome (SDS) in soybean [Glycine max (L.) Merrill]. Once the fungus invades the root xylem tissues, the pathogen secretes toxins that cause chlorosis and necrosis in foliar tissues leading to defoliation, flower and pod drop and eventually death of plants. Resistance to F. virguliforme in soybean is partial and governed by over 80 quantitative trait loci (QTL). We have conducted genome-wide association study (GWAS) for a group of 254 plant introductions lines using a panel of approximately 30,000 SNPs and identified 19 single nucleotide polymorphic loci (SNPL) that are associated with 14 genomic regions encoding foliar SDS and eight SNPL associated with seven genomic regions for root rot resistance. Of the identified 27 SNPL, six SNPL for foliar SDS resistance and two SNPL for root rot resistance co-mapped to previously identified QTL for SDS resistance. This study identified 13 SNPL associated with eight novel genomic regions containing foliar SDS resistance genes and six SNPL with five novel regions for root-rot resistance. This study identified five genes carrying nonsynonymous mutations: (i) three of which mapped to previously identified QTL for foliar SDS resistance and (ii) two mapped to two novel regions containing root rot resistance genes. Of the three genes mapped to QTL for foliar SDS resistance genes, two encode LRR-receptors and third one encodes a novel protein with unknown function. Of the two genes governing root rot resistance, Glyma.01g222900.1 encodes a soybean-specific LEA protein and Glyma.10g058700.1 encodes a heparan-alpha-glucosaminide N-acetyltransferase. In the LEA protein, a conserved serine residue was substituted with asparagine; and in the heparan-alpha-glucosaminide N-acetyltransferase, a conserved histidine residue was substituted with an arginine residue. Such changes are expected to alter functions of these two proteins regulated through phosphorylation. The five genes with nonsynonymous mutations could be considered candidate SDS resistance genes and should be suitable molecular markers for breeding SDS resistance in soybean. The study also reports desirable plant introduction lines and novel genomic regions for enhancing SDS resistance in soybean.
A Combinatorial Strategy for the Acquisition of Potent and Specific Protein Tyrosine Phosphatase Inhibitors (2012)

Protein tyrosine phosphatases (PTPs), a large family of signaling enzymes, regulate many cellular processes, such as proliferation, differentiation, migration, apoptosis, and immune responses. Small molecule inhibitors against PTPs are valuable both as powerful tools to study the functions of target PTPs and as lead compounds for pharmacological development. Here, we describe a novel combinatorial library approach to target simultaneously both the active site pocket and a peripheral secondary binding site for the acquisition of potent and specific PTP inhibitors. Fluorescence tagging during combinatorial library synthesis enables fluorescence polarization-based high-throughput screening of the resulting library, leading to identification of a TC-PTP inhibitor.
Optical waveguiding and morphology of chitosan thin films (1996)

An investigation was made of the optical and waveguiding properties of thin films fabricated from solutions of chitosan-acetic acid (chitosan/HAc) and chitosan/HAc doped with rare-earth metal ions (Er+++ or Nd+++). For all three films, the refractive indices were approximately 1.5 and there was nearly no absorption in the range of 300 to 2700 nm. The optical loss in a waveguides was less than 0.5 dB/cm. Morphological observations disclosed that all the films possessed a dense and homogeneous amorphous structure with smooth surfaces. Extrinsic scattering, especially the scattering caused by surface impurities, was the dominating factor affecting the optical loss value. It is also interesting to note that for all the films, doped with rare-earth metal ions or not, the morphological characteristics were alike and the optical properties were similar. Doping rare-earth metal ions into chitosan thin films did not seriously influence optical waveguiding. This paper reports, we believe, the first study of chitosan films for optical applications. The experimental results demonstrate that chitosan and its derivatives are potential candidates for optical materials. © 1996 John Wiley & Sons, Inc.