gebhart/patrepeval huggingface dataset:
Methylamine stimulates the action of ricin toxin but inhibits that of diphtheria toxin. (1981)

The action of ricin toxin was stimulated by addition of methylamine or some other amines, as shown by measuring the inhibition of protein synthesis of cultured cells by the toxin. Under the same conditions, however, the action of diphtheria toxin was completely inhibited by the amines. In a cell-free protein-synthesizing system, methylamine had no effect on the action of the A chain of ricin toxin and fragment A of diphtheria toxin. Studies on the interactions of 125I-labeled toxins with cells revealed that methylamine did not alter toxin-receptor bindings, but affected the entry of the toxins into the cells. Studies were also made on the effects of methylamine on the actions of two hybrid toxins, formed from a subunit of Wistaria floribunda lectin and fragment A of diphtheria toxin and the A chain of ricin toxin, respectively. Results suggested that the processes of entry of ricin toxin and diphtheria toxin, or at least parts of these processes, are different.
Multiple antenna channels with partial feedback (2004)

We consider flat-fading multiple antenna channels with t transmit and r receive antennas, which is modeled by an r /spl times/ t complex matrix H. The first n eigenvectors of H/sup /spl dagger//H, where 0/spl les/n/spl les/min(t,r) are assumed to be available at the transmitter as partial spatial information of channel. A transmission method was proposed which enables better use of the multiple-input multiple output (MIMO) channels. By using the transmission scheme, the MIMO channel can be decomposed into two parts: n parallel channels and a new small coupled MIMO channel. One reasonable coding strategy is to employ conventional time-domain only code for each of the parallel channels and a space-time code for the small MIMO channel. This paper focuses on deriving the channel capacity of the multiple antenna channels employing such a coding strategy. The results show that the proposed methods lead to systems wherein the amount of feedback information can be significantly reduced with a minor sacrifice of achievable transmission rate.
Rare-earth-doped chalcogenide glass for mid- and long-wave IR fiber lasers (2003)

Rare earth doped chalcogenide glass fibers have been developed at NRL. Spectroscopic investigation of these glasses and fibers show that they possess strong and efficient mid-IR and long-wave IR emissions suitable for fiber lasers in these wavelength regions. Small fiber sources based on these emission lines have been developed and can be used as bright IR sources for characterizing focal planes.
Decentralized learning for wireless communications and networking (2015)

This chapter deals with decentralized learning algorithms for in-network processing of graph-valued data. A generic learning problem is formulated and recast into a separable form, which is iteratively minimized using the alternating-direction method of multipliers (ADMM) so as to gain the desired degree of parallelization. Without exchanging elements from the distributed training sets and keeping inter-node communications at affordable levels, the local (per-node) learners consent to the desired quantity inferred globally, meaning the one obtained if the entire training data set were centrally available. Impact of the decentralized learning framework to contemporary wireless communications and networking tasks is illustrated through case studies including target tracking using wireless sensor networks, unveiling Internet traffic anomalies, power system state estimation, as well as spectrum cartography for wireless cognitive radio networks.
Inverse Molecular Dynamics Modeling Performance on GPU Architectures for a Problem of Fracture (2010)

The recent growth of General Purpose Graphic Processor Units (GPGPUs) technologies as well as the ongoing need for linking usability performance with structural materials processing and design across many length and time scales have motivated the present work. The inverse problem of determining the Lennard-Jones potential governing the fracture dynamics of atoms comprising a sheet of metal under tension, is used to examine the feasibility of utilizing efficiently GPGPU architectures. The implementation of this inverse problem under a molecular dynamics framework verifies the ability of this methodology to deliver the intended results. Subsequently, a sensitivity analysis is performed on GPGPU-enabled hardware to examine the effect of the size of the problem under consideration on the efficiency of various combinations of GPGPU and Central Processing Unit (CPU) cores. Speedup factors are determined relative to a single core CPU of a quad core processor.
Design, fabrication, and testing of SMA-enabled adaptive chevrons for jet noise reduction (2004)

This study presents the status and results from an effort to design, fabricate, and test an adaptive jet engine chevron concept based upon embedding shape memory alloy (SMA) actuators in a composite laminate, termed a SMA hybrid composite (SMAHC). The approach for fabricating the adaptive SMAHC chevrons involves embedding prestrained Nitinol actuators on one side of the mid-plane of the composite laminate such that thermal excitation generates a thermal moment and deflects the structure. A glass-epoxy pre-preg/Nitinol ribbon material system and a vacuum hot press consolidation approach are employed. A versatile test system for control and measurement of the chevron deflection performance is described. Projection moire interferometry (PMI) is used for global deformation measurement and infrared (IR) thermography is used for 2-D temperature measurement and feedback control. A recently commercialized constitutive model for SMA and SMAHC materials is used in the finite element code ABAQUS to perform nonlinear static analysis of the chevron prototypes. Excellent agreement is achieved between the predicted and measured chevron deflection performance, thereby validating the design tool. Although the performance results presented in this paper fall short of the requirement, the concept is proven and an approach for achieving the performance objectives is evident.
Three‐Sodium Ion Activity of a Hollow Spherical Na3V2(PO4)2F3 Cathode: Demonstrating High Capacity and Stability (2019)

Abstract Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) is a promising cathode material for sodium ion batteries, owing to its high voltage and promising cycling profile. Nevertheless, most previous reports demonstrated only approximately 100 mAh g −1 at limited operating voltage. Using a solvothermal synthesis route, we synthesized the NVPF cathode with a controlled architecture and spherical morphology. We used this electrode as the cathode for a sodium‐ion battery and managed to intercalate/deintercalate the third Na + ion from the structure, demonstrating a high specific capacity (197 mAh g −1 ). Long‐term stability challenges of these electrodes under a wide potential regime are also presented here in.
Molecular and crystal structure of an open cyclamphosphorane adduct: cyclamphosphane-bis(borane) (1984)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMolecular and crystal structure of an open cyclamphosphorane adduct: cyclamphosphane-bis(borane)Jean Marc Dupart, Andre Grand, Simonne Pace, and Jean G. RiessCite this: Inorg. Chem. 1984, 23, 23, 3776–3779Publication Date (Print):November 1, 1984Publication History Published online1 May 2002Published inissue 1 November 1984https://pubs.acs.org/doi/10.1021/ic00191a022https://doi.org/10.1021/ic00191a022research-articleACS PublicationsRequest reuse permissionsArticle Views50Altmetric-Citations11LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access optionsGet e-AlertscloseSupporting Info (1)»Supporting Information Supporting Information Get e-Alerts
Downlink eigenbeamformer with combining of eigenbeams (2002)

For W-CDMA several closed-loop Tx diversity concepts employing 4 antenna elements at the base station (BS) are currently discussed to be included in 3GPP release 5. Among these, the downlink eigenbeamformer effectively uses long-term as well as short-term channel properties. More specifically, it is based on an eigenanalysis of the long-term spatial covariance matrix at the mobile station (MS). The eigenvectors (vector of complex weighting factors for all antenna elements) with the largest eigenvalues (largest average signal power) are determined and fed back step by step to the BS. This process takes place on the same time scale as the MS physical movement. Accordingly, required operations in the MS for eigenanalysis as well as required long-term feedback bits for representation of eigenvectors are distributed over a very large number of transmission slots. As an extension of simple switching between eigenbeams a linear combination of several eigenbeams is considered. This combining is performed using constellation rotation and progressive refinement techniques applied to the eigenbeam space. Performance of combining methods is compared with an upper bound (beamforming based on perfect short-term knowledge of the downlink channel) and uplink based beamforming methods where only the long-term spatial covariance matrix is known at the BS. Although combining methods require more short-term feedback information then simple switching and thus are more sensitive to feedback delay and restricted feedback rate, they prove to be beneficial up to a vehicle speed of 40 km/h.
Memristor-based relaxation oscillators using digital gates (2012)

This paper presents two memristor-based relaxation oscillators. The proposed oscillators are designed without the need of any reactive elements, i.e., capacitor or inductor. As the "resistance storage" property of the memristor can be exploited to generate the oscillation. The proposed oscillators have the advantage that they can be fully integrated on-chip giving an area-efficient solution. Furthermore, these oscillators give higher frequency other than the existing reactance-less oscillator and provide a wider range of the resistance. The concept of operation and the mathematical analysis for the proposed oscillators are explained and verified with circuit simulations showing an excellent agreement.
Photo-induced reduction of CO2using a magnetically separable Ru-CoPc@TiO2@SiO2@Fe3O4catalyst under visible light irradiation (2015)

An efficient photo-induced reduction of CO2 using magnetically separable Ru-CoPc@TiO2@SiO2@Fe3O4 as a heterogeneous catalyst in which CoPc and Ru(bpy)2phene complexes were attached to a solid support via covalent attachment under visible light is described. The as-synthesized catalyst was characterized by a series of techniques including FTIR, UV-Vis, XRD, SEM, TEM, etc. and subsequently tested for the photocatalytic reduction of carbon dioxide using triethylamine as a sacrificial donor and water as a reaction medium. The developed photocatalyst exhibited a significantly higher catalytic activity to give a methanol yield of 2570.78 μmol per g cat after 48 h.
Switching Lemma for Bilinear Tests and Constant-size NIZK Proofs for Linear Subspaces. (2013)

We state a switching lemma for tests on adversarial inputs involving bilinear pairings in hard groups, where the tester can effectively switch the randomness used in the test from being given to the adversary to being chosen after the adversary commits its input. The switching lemma can be based on any k-linear hardness assumptions on one of the groups. In particular, this enables convenient information theoretic arguments in the construction of sequence of games proving security of cryptographic schemes, paralleling proofs and constructions in the random oracle model. As an immediate application, we show that the quasi-adaptive NIZK proofs of Jutla and Roy [JR13] for linear subspaces can be further shortened to constant-size proofs, independent of the number of witnesses and equations. In particular, under the SXDH assumption, a length n vector of group elements can be proven to belong to a subspace of rank t with a quasi-adaptive NIZK proof of just a single group element. Similar quasi-adaptive aggregation of proofs is also shown for Groth-Sahai NIZK proofs of linear multi-scalar multiplication equations, as well as linear pairing-product equations (equations without any quadratic terms).
Internal multiple prediction in the offset-time domain: Response to irregular spatial sampling (2018)

The prediction and attenuation of internal multiples in seismic data is a complex step in the processing sequence. This complexity is partially due to problem of discriminating primary and multiple energy and the subtraction of the prediction. The technique examined here to predict internal multiples uses the inverse scattering series, where only the data and a search limiting parameter are required inputs to the algorithm. The domain of computation of the prediction has recently been argued to have important consequences for the fidelity of the results; here we focus on prediction in the offset-time domain. The impact of random spatial sampling on internal multiple prediction is tested in this domain. This study is carried out on both a two-interface synthetic model and a physical modeling dataset recorded in the CREWES Physical Modeling Facility. We find that the 1.5D version of the method can accurately predict internal multiples with some significant degree of sampling irregularity. With the algorithm applied to the physical modeling data, artifacts appear when the variation in sampling grows. Presentation Date: Monday, October 15, 2018 Start Time: 1:50:00 PM Location: 211A (Anaheim Convention Center) Presentation Type: Oral
Crystallographic and mutational studies on the tRNA thiouridine synthetase TtuA (2013)

In thermophilic bacteria, specific 2-thiolation occurs on the conserved ribothymidine at position 54 (T54) in tRNAs, which is necessary for survival at high temperatures. T54 2-thiolation is achieved by the tRNA thiouridine synthetase TtuA and sulfur-carrier proteins. TtuA has five conserved CXXC/H motifs and the signature PP motif, and belongs to the TtcA family of tRNA 2-thiolation enzymes, for which there is currently no structural information. In this study, we determined the crystal structure of a TtuA homolog from the hyperthermophilic archeon Pyrococcus horikoshii at 2.1 Å resolution. The P. horikoshii TtuA forms a homodimer, and each subunit contains a catalytic domain and unique N- and C-terminal zinc fingers. The catalytic domain has much higher structural similarity to that of another tRNA modification enzyme, TilS (tRNA(Ile)₂ lysidine synthetase), than to the other type of tRNA 2-thiolation enzyme, MnmA. Three conserved cysteine residues are clustered in the putative catalytic site, which is not present in TilS. An in vivo mutational analysis in the bacterium Thermus thermophilus demonstrated that the three conserved cysteine residues and the putative ATP-binding residues in the catalytic domain are important for the TtuA activity. A positively charged surface that includes the catalytic site and the two zinc fingers is likely to provide the tRNA-binding site.
Peptide-based vaccine targeting IL17A attenuates experimental spondyloarthritis in HLA-B27 transgenic rats (2023)

IL17A peptide-based vaccine may be a therapeutic option for SpA treatment.
Data Adaptive Pathway Testing (2005)

A majority of diseases are caused by a combination of factors, for example, composite genetic mutation profiles have been found in many cases to predict a deleterious outcome. There are several statistical techniques that have been used to analyze these types of biological data. This article implements a general strategy which uses data adaptive regression methods to build a specific pathway model, thus predicting a disease outcome by a combination of biological factors and assesses the significance of this model, or pathway, by using a permutation based null distribution. We also provide several simulation comparisons with other techniques. In addition, this method is applied in several different ways to an HIV-1 dataset in order to assess the potential biological pathways in the data.
Crystallographically Oriented Thin-Film Nanocrystalline Cathode Layers Prepared Without Exceeding 300°C (2001)

The highest capacity rf sputtered cathode layers created for use in thin-film solid-state batteries have been found to require an annealing step with temperatures in excess of 700°C. Since this high-temperature process step is incompatible with silicon device technology and flexible polymer substrates, the development of a low-process temperature (less than or equal to 300°C) cathode layer has been undertaken. Thin-film cathode layers consisting of were deposited using planar magnetron rf sputtering and subsequently incorporated into thin-film solid-state cells comprised of a LiPON electrolyte and lithium metal anode. Film composition was examined using Rutherford backscattering spectrometry and inductively coupled plasma mass spectroscopy, while phase content and crystal structure were studied through X-ray diffraction experiments conducted at the Stanford Synchrotron Radiation Laboratory. Microstructure and morphology were examined using transmission and scanning electron microscopy. It was found that could be deposited at room temperature in a nanocrystalline state with a defined (104) out of plane texture and a high degree of lattice distortion. By heating these layers to 300°C, the average grain size was increased while lattice distortion was minimized. Electrochemical cycling data revealed that the low temperature annealing step increases cell capacity to near theoretical values while significantly improving both the rate capability and discharge voltage. Impedance analysis on test cells showed that the electronic resistance of the cells is decreased after heating to 300°C. © 2001 The Electrochemical Society. All rights reserved.
Summary Abstract: The chemisorption of organosulfur compounds on gold surfaces: Construction of well-defined organic solids (1987)

Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation L. H. Dubois, B. R. Zegarski, R. G. Nuzzo; Summary Abstract: The chemisorption of organosulfur compounds on gold surfaces: Construction of well‐defined organic solids. J. Vac. Sci. Technol. A 1 July 1987; 5 (4): 634–635. https://doi.org/10.1116/1.574652 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAVS: Science & Technology of Materials Interfaces and ProcessingJournal of Vacuum Science & Technology A Search Advanced Search |Citation Search
Label-free and reusable antibody-functionalized gold nanorod arrays for the rapid detection of Escherichia coli cells in a water dispersion (2022)

An antibody-functionalized gold nanorod array enables the realization of a reusable early-warning system for detecting harmful pathogens dispersed in drinkable water.
Passive Badge Assessment for Long-Term, Low-level Air Monitoring on Submarines: Acrolein Badge Validation (2006)

Passive diffusion badges are being tested as a long-term, method of analyte-specific air analysis onboard U.S. Navy (USN) nuclear submarines. Passive badge monitors for acrolein detection were tested. Long-term sampling efficiency was evaluated for a 28-day period by comparing the response of the passive badge to an active tube sampling method. The badges and tubes were exposed to acrolein vapor at concentrations of 0.2 and 0.1 ppm, resulting in a time-weighted-average of exposure at 100% and 50% of the USN 90-day submarine-specific limit (0.01 ppm). The badges and tubes continued to accumulate the analyte for 21 days, with recovery of the analyte onto badges consistently about 30% lower than recovery onto tubes. The badges and tubes seemed to reach full capacity before the full 28 days of the validation expired. Volatility of the derivatizing agent may have resulted in premature saturation of the sampling substrate. Badge results appear to be stable for continuous, qualitative air monitoring for up to seven days and possibly for up to 14 days.
Paradoxical effects of tumour necrosis factor in experimental ovarian cancer (1989)

Recombinant human tumour necrosis factor (rhTNF) had anti-tumour activity against 2 of 3 human ovarian cancer xenografts growing intraperitoneally (i.p.) in nude mice, producing a moderate (2- to 3-fold) increase in mouse survival time. rhTNF therapy caused a marked influx of polymorphonuclear neutrophils into the peritoneal cavity during the first few days of daily therapy. This was accompanied by a decrease in the number of peritoneal macrophages and lymphocytes. rhTNF also caused an increase in peripheral blood neutrophils. With continuation of daily therapy, the peritoneal neutrophil influx diminished, with restoration of the macrophage and lymphocyte populations. After 2 to 3 weeks there was a small but significant increase in peritoneal Thy 1.2+ cells. In the peripheral blood, the neutrophilia was less marked than at the start of therapy. Mild myelosuppression was indicated by significant falls in haemoglobin and platelet counts. Within 24 hr of the start of therapy in the 2 responsive xenografts (HU and LA) tumour clumps in the peritoneum were surrounded by host inflammatory cells, and tumours fixed to the omentum were infiltrated by neutrophils and mononuclear cells. In both instances necrosis was evident by 4 to 7 days. The third xenograft (OS) grew although the rhTNF therapy induced the same inflammatory changes in the peritoneum. In contrast to its positive effect on the survival of tumour-bearing mice, rhTNF promoted the adhesion of tumour cells to the peritoneum and their establishment as tumour nodules below the mesothelial surface. This phenomenon was seen in all 3 xenografts including the OS xenograft which did not respond in any other way to rhTNF therapy.
A consistent implementation of point sources on finite-difference grids (2020)

SUMMARY We present a method to position point sources at arbitrary locations on finite-difference (FD) grids. We show that implementing point sources on single nodes can cause considerable errors when modelling with the FD method. In contrast, we propose to create a spatially distributed source (over multiple nodes) that nonetheless creates the desired point-source response. The spatial point source is formulated in the wavenumber domain and is based on the FD coefficients used for the wave propagation. Using this ‘FD-consistent source’ on 1-D and 2-D examples, we show that we can obtain superior fits to analytical solutions compared to single-node or sinc-function source implementations, and we show that sources can be offset to arbitrary locations from ‘on’ the grid to ‘off’ the grid, while resulting in solutions that are identical to within machine precision