gebhart/patrepeval huggingface dataset:
Vibration based structural health monitoring: Wavelet packet transform based solution (2006)

One prominent problem for vibration-based structural health monitoring is to extract condition indices which are sensitive to damage and yet insensitive to measurement noise. In this paper, a condition index extraction method based on the wavelet packet transform (WPT) is proposed. This transform leads to the formulation of a novel condition index: wavelet packet signature (WPS). The sensitivity of the WPS to the change of structural parameters is derived and validated on a five-degrees-of-freedom spring-mass system. Results show that the WPS is significantly more sensitive to the stiffness change than the natural frequencies and the mode shapes. Its sensitivity is slightly better or comparable to that of the modal flexibility matrices depending on the location of damage. A variability analysis is also performed to study the effect of measurement noise on the proposed WPS. Results show that the WPS does not show any significant variation even under the presence of 10 dB noise. To illustrate the potential of the WPS, a damage indicator is formulated and used to monitor the health condition of the structural system. An experimental study on a three-storey frame shows that when incorporated with a statistical process control approach, the WPS-based damage indicator can distinctly identify the presence of damage in the system.
Incoherent spin pumping from YIG single crystals (2019)

Ferromagnetic resonance (FMR) in yttrium iron garnet (YIG)/Pt with a suitable YIG thickness in the submillimeter range show pure spin current contributions from the uniform FMR (UFMR) mode and various spin-wave resonance (SWR) modes, each with a different absorption intensity, inverse spin Hall voltage, and temperature dependence. The higher order mode of SWR with nonzero moment transferring along the thickness direction induces a maximum dc voltage among all modes. The spin current driven by UFMR and SWR has a linear $T$ and power-law $T$ dependence, respectively. In addition, the mixing conductance is derived for both modes, indicative of power-law $T$ dependences. There is an absence of evidence for coherent spin pumping in YIG/Pt.
A kinetic study of the catalytic oxidation of carbon monoxide over Nafion-supported rhodium, ruthenium and platinum (1986)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA kinetic study of the catalytic oxidation of carbon monoxide over Nafion-supported rhodium, ruthenium and platinumVincent D. Mattera Jr., Denise M. Barnes, Sanwat Noor Chaudhuri, William M. Risen Jr., and Richard D. GonzalezCite this: J. Phys. Chem. 1986, 90, 20, 4819–4824Publication Date (Print):September 1, 1986Publication History Published online1 May 2002Published inissue 1 September 1986https://pubs.acs.org/doi/10.1021/j100411a021https://doi.org/10.1021/j100411a021research-articleACS PublicationsRequest reuse permissionsArticle Views90Altmetric-Citations19LEARN 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 options Get e-Alerts
Activation of CD4<sup>+</sup> T cells by delivery of the B7 costimulatory signal on bystander antigen‐presenting cells (trans‐costimulation) (1994)

Increasing evidence in both murine and human systems suggests that the interaction of the T cell surface antigens CD28/CTLA4 with their ligand B7 on the antigen-presenting cells (APC) is the critical costimulatory pathway involved in the induction of maximal T cell activation and the prevention of induction of anergy. It has also been demonstrated that efficient induction of clonal expansion of normal CD4+ T cells requires the delivery of the T cell receptor (TCR) ligand and costimulation by the same APC. We demonstrate here that normal murine CD4+ T cells can be efficiently activated by soluble anti-CD3 cross-linked by fixed macrophages and by a costimulatory signal delivered by a bystander APC, B7-transfected L cells. The major factor which determined the ability of an APC to provide costimulation in "trans" was the level of cell surface B7 expression. The requirement for B7 costimulation appears to be at initial stage of TCR engagement since optimal T cell activation was only observed when TCR triggering and B7 costimulatory activity were delivered at same time by different APC. Induction of maximal proliferation of both naive CD45RBhi and memory CD45RBlo CD4+ T cells was B7 dependent and both populations of cells responded equally well to the B7 costimulation delivered in "trans". Furthermore, trans-costimulation provided by B7 transfected L cells efficiently prevented the induction of anergy in normal murine CD4+ T cells induced by anti-CD3 cross-linked by fixed-resting macrophages. Addition of exogenous interleukin-2 (IL-2) and IL-7 to the primary culture in the absence of B7-transfected L cells or addition of IL-2 to the culture containing the B7 transfectant and CTLA4Ig completely prevented the induction of hyporesponsiveness. These findings raise the possibility that in certain pathological states, CD4+ T cells in vivo may be activated by costimulation delivered by bystander APC.
Coated-wire lithium ion-selective electrodes based on polyalkoxylate complexes (1985)

Barium and lithium adducts of polyalkoxylates have been investigated as sensors in lithium ion-selective electrodes using a microconduit flow injection analysis system. Dioctyl phenylphosphonate (DOPP) and dioctyl 3-nitrophenylphosphonate (N-DOPP) were employed as solvent mediators. Selectivity coefficients, kpotLi,M, for the Ba(PPG 1025)0.69. (TPB)2-DOPP-based lithium electrode in 0.14 M sodium chloride solution are as follows: Na+ 3.7 × 10–2, K+ 4.4 × 10–3, Ca2+ 4.1 × 10–1 and Mg2+ 8.0 × 10–2. The selectivity coefficients are compared with those for two other previously reported lithium electrodes. The barium polyalkoxylate adduct is a better sensor for lithium than its lithium analogue.
Olfactory Response of Megachilid Bees, <I>Osmia lignaria</I>, <I>Megachile rotundata</I>, and <I>M. pugnata</I>, to Individual Cues from Old Nest Cavities (2007)

The megachilid bees Osmia lignaria Say, Megachile rotundata (F.), and M. pugnata Say were tested for attraction to various components associated with their old nest cavities, or chemical extracts of these components, using a Y-tube olfactory response bioassay. Female bees of these species are known to nest in or near old nest cavities, implying that remnant nest components are important cues for bees looking for nest cavities. Significant results show that female bees were attracted to components that may provide species-specific cues or indicate conspecific nesting activity. Specifically, O. lignaria females showed attraction only to the female cocoon. M. rotundata females were attracted to intact nest cells, the fecal material on the outside of a cocoon, leaf pieces used as nest cell lining, and the extract of leaf pieces. M. pugnata females were attracted to the whole nest cell, the paper straw nesting material with attached cocoon, and feces.
Aquaculture: The Farming and Husbandry of Freshwater and Marine Organisms (1972)

Aquaculture; the farming and husbandry of freshwater and marine organisms , Aquaculture; the farming and husbandry of freshwater and marine organisms , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
The sensitivity of c-Jun and c-Fos proteins to calpains depends on conformational determinants of the monomers and not on formation of dimers (2000)

Milli- and micro-calpains are ubiquitous cytoplasmic cysteine proteases activated by calcium. They display a relatively strict specificity for their substrates which they usually cleave at only a limited number of sites. Motifs responsible for recognition by calpains have not been characterized yet, and recently a role for PEST motifs in this process has been ruled out. c-Fos and c-Jun transcription factors are highly sensitive to calpains in vitro. They thus provide favourable protein contexts for studying the structural requirements for recognition and degradation by these proteases. Using in vitro degradation assays and site-directed mutagenesis, we report here that susceptibility to calpains is primarily determined by conformational determinants of the monomers and not by the quaternary structure of c-Fos and c-Jun proteins. The multiple cleavage sites borne by both proteins can be divided into at least two classes of sensitivity, the most sensitive ones being easily visualized in the presence of rate-limiting amounts of calpains. One site located at position 90-91 in c-Fos protein is extremely sensitive. However, efficient proteolysis did not have any strict dependence on the nature of the amino acids on either side of the scissile bond in the region extending from P2 to Pʹ2. The structural integrity of the monomers is not crucial for recognition by calpains. Rather, sensitive sites can be recognized independently and their recognition is dependent on the local conformation of peptide regions that may span several tens of amino acids and maybe more in the case of the identified c-Fos hypersensitive site.
Effect of the irreversible electroporation in a murine model of colorectal liver metastases (2017)

Irreversible electroporation is a fast-growing liver ablation technique. Although safety has been well documented in small ablations, little is known about it safety when a large portion of liver is ablated neither its oncological long-term outcomes.
In this study a tumoral animal model (athymic-nude implanted with a tumor from the KM12C cell line) and a non-tumoral model C57-Bl6 mice were subjected to high voltage pulses directly delivered across parallel plate electrodes comprising 40% of mouse liver in order to create a massive ablation.
It was delivered two different field strengths (1000 V/cm, 2000 V/cm) and a subset of the animals received anti-hyperkalemia therapy. To determine the long-time survival of animals treated with a high dose of IRE tumors were allowed to continue to grow until the animals reached the end-point criteria.
Early mortality (less than 24 hours post-IRE) in the 2000 V/cm group was observed and revealed considerably higher mean potassium levels. In contrast, the animals subjected to a 2000 V/cm field treated with the anti-hyperkalemia therapy had higher survival rates (OR= 0.1, 95%CI=0.02-0.32, p<0.001). Early mortality also depended on the electric field magnitude of the IRE protocol, as mice given 1000 V/cm survived longer than those given 2000 V/cm (OR= 4.7, 95% CI=1.8-11.8, p=0.001). However, IRE treatment with the 2000V/cm protocol significantly prolonged median mouse survival from 74.3 ± 6.9 days in the sham group to 112.5 ± 15.2 days in 2000V/cm group. No differences were observed between the mean survival of the 1000V/cm and the sham group (83.2 ± 16.4 days, p = 0.62).
Histology revealed 63.05% ± 23.12 of tumor necrosis in animals of the 2000 V/cm group as compared to 17.50% ± 2.50 in the 1000 V/cm group and 25.6% ± 22.1 in the Sham group (p = 0.001). The highest IRE protocol is needed to achieve a prolonged survival und more grade of tumoral necrosis but it also arise concerns about safety.
Synthesis and Characterizations of Ternary InGaAs Nanowires by a Two-Step Growth Method for High-Performance Electronic Devices (2012)

InAs nanowires have been extensively studied for high-speed and high-frequency electronics due to the low effective electron mass and corresponding high carrier mobility. However, further applications still suffer from the significant leakage current in InAs nanowire devices arising from the small electronic band gap. Here, we demonstrate the successful synthesis of ternary InGaAs nanowires in order to tackle this leakage issue utilizing the larger band gap material but at the same time not sacrificing the high electron mobility. In this work, we adapt a two-step growth method on amorphous SiO(2)/Si substrates which significantly reduces the kinked morphology and surface coating along the nanowires. The grown nanowires exhibit excellent crystallinity and uniform stoichiometric composition along the entire length of the nanowires. More importantly, the electrical properties of those nanowires are found to be remarkably impressive with I(ON)/I(OFF) ratio >10(5), field-effect mobility of ∼2700 cm(2)/(V·s), and ON current density of ∼0.9 mA/μm. These nanowires are then employed in the contact printing and achieve large-scale assembly of nanowire parallel arrays which further illustrate the potential for utilizing these high-performance nanowires on substrates for the fabrication of future integrated circuits.
THE CHALLENGE OF A DESERT: REVEGETATION OF DISTURBED DESERT LANDS (1980)

(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Synthesis and Characterization of an RNA Dinucleotide Containing a 3‘-<i>S</i>-Phosphorothiolate Linkage (1996)

The synthesis of an RNA dinucleotide (IspU) containing a 3‘-S-phosphorothiolate linkage is described. The compound is prepared from 9-(3-deoxy-3-iodo-β-d-xylofuranosyl)hypoxanthine with installation of the phosphorothiolate group via an Arbusov reaction and protection of the ribose 2‘-hydroxyl as a silyl ether. IspU is found to be a substrate for several enzymes including T4 polynucleotide kinase, snake venom phosphodiesterase, and ribonuclease T2. Base-catalyzed cleavage of the dinucleotide is accelerated (∼2000-fold) relative to that of the phosphate-linked compound IpU. Product characterization and kinetic analysis show that IspU is cleaved through the same mechanism as IpU. The observed rate acceleration is argued to reflect stabilization of the anionic transition state by the polarizable sulfur atom.
Total Synthesis of the Nematicidal Cyclododecapeptide Omphalotin A by Using Racemization-Free Triphosgene-Mediated Couplings in the Solid Phase (2002)

Racemization-free coupling of Fmoc-N-methyl amino acids on a solid support is quantitative with a new triphosgene-activation method. With this method, the total synthesis of the nematicidal cyclododecapeptide omphalotin A (see picture) was accomplished, which because of its high content of N-methyl amino acids had not yet been accessible.
S-Layer Proteins as Key Components of a Versatile Molecular Construction Kit for Biomedical Nanotechnology (2006)

Surface (S)-layer proteins and S-layer fusion proteins incorporating functional sequences, self-assemble into monomolecular lattices on solid supports and on various lipid structures. Based on these S-layer proteins, supramolecular assemblies can be constructed which are envisaged for label-free detection systems, as affinity matrix, as anti-allergic immuno-therapeutics, as membrane protein-based screening devices, and as drug targeting and delivery systems.
Motion-compensated lossless video coding in the calic framework (2006)

In this paper we consider the problem of lossless compression of video sequences exploiting the temporal redundancy between subsequent frames. More specifically, we present a lossless video coding technique which extends interframe-CALlC by employing multi-frame motion compensation to first temporally decorrelate the video material, followed by context-based arithmetic coding of the residual data. To avoid the well known context-dilution problem, we perform context quantization. The proposed technique, called motion-CALIC, is shown to outperform competing methods such as interframe-CALIC and LOPT-3D up to 22.93% in terms of bitrate savings, while still maintaining manageable complexity
[Regulation of c-myc expression in leukemic cell line Meg-01 by the death domain of Fas gene]. (2001)

To investigate the mechanism of disordered proliferation of leukemic cells and the proliferation inhibition by the Fas death domain (FASDD) in human leukemia cell line Meg-01.The chimerical receptors (Fas/190, Fas/130) were constructed by Fas cytoplasmic domain with the leukemic inhibitory factor (LIF) receptor subunits gp190 and gp130, another chimerical receptor was constructed by replacing the gp130 in Fas/130 with Fas death domain (FAS/130f). The chimerical receptors were separately expressed on the membrane of Meg-01, and activated with anti-Fas antibodies to induce the oligomerics of the cytoplasmic regions (190cyt-190cyt-190cyt, 130cyt-130cyt-130cyt or FASDD-FASDD-FASDD) for initiating the intracellular signal transduction. c-myc expression level was assayed by means of immunoblotting and immunobiochemistry.Increased c-myc expression and cell proliferation were observed in the group of Fas/130 as compared with the other two groups.The cytoplasmic domain of gp130 might involve the induction of c-myc expression and the cell proliferation of Meg-01 cell. The Fas death domain may be a medium in the apoptosis induction against the effect of gp130.
The guardian model for exception handling in distributed systems (2003)

We present an abstraction called guardian for exception handling in distributed systems. The guardian can solve several limitations with existing distributed exception handling techniques. To understand these limitations, we analyze distributed exception handling with respect to sequential exception handling and identify the significant differences between them. This leads to the fundamental problem with distributed exception handling, which is invoking the semantically correct exception handlers in all the distributed processes that are required to participate in the recovery. The guardian model addresses this problem. It introduces a set of programming primitives and a global exception handler. Finally, using a primary-backup example we illustrate how the guardian model is used for global exception handling in a distributed system.
Programmable routing of interrupts in a multiprocessor network (1982)

A method to select under program control the routing of interrupts in a multiprocessor network (a network of individual processors in a single processing system) is described.
Influence of microbial phytase on apparent ileal amino acid digestibility of feedstuffs for broilers (1999)

The influence of microbial phytase on the ileal amino acid digestibilities in three cereals (corn, sorghum, and wheat), four oilseed meals (soybean meal, canola meal, cottonseed meal, and sunflower meal) and two cereal by-products (wheat middlings and rice polishings) was determined using 5-wk-old broilers. Supplementation of microbial phytase (1,200 FTU/kg) improved (P < 0.001 to 0.10) the digestibilities of protein and amino acids in all feedstuffs, but the magnitude of response varied depending on the feedstuff and the amino acid considered. Mean digestibility of the 15 amino acids in the feedstuffs without and with phytase were: corn, 78.0 and 80.4%; sorghum, 74.7 and 79.4%; wheat, 77.7 and 84.6%; soybean meal, 82.2 and 85.5%; canola meal, 78.7 and 80.7%; cottonseed meal, 70.8 and 74.2%; sunflower meal, 76.7 and 80.2%; wheat middlings, 70.8 and 73.4%; and rice polishings 62.1 and 66.9%, respectively. When individual amino acids were considered, the increments in digestibility were relatively higher for threonine and valine. This effect was consistent across all feedstuffs. The observed variations in response among feedstuffs were influenced by the inherent protein digestibility, but not by dietary phytic acid concentration. No correlations were determined between the dietary concentrations of phytic acid and phytase responses in terms of protein digestibility (r = 0.20; P > 0.31) and mean amino acid digestibility (r = 0.12; P > 0.51); however a significant negative correlation was observed between inherent protein digestibility and phytase responses in protein digestibility (r = -0.42; P < 0.03). It appears that solubilities of phytate salts and protein, and their influence on the degree of phytate-protein complexing in different feedstuffs, may be more relevant than total phytic acid concentrations. Interestingly, dietary phytic acid concentrations were negatively correlated with inherent protein (r = -0.81; P < 0.001) and mean amino acid (r = -0.85; P < 0.001) digestibilities of the feedstuffs evaluated in this study.
Nitrogen-doped porous carbon prepared from a liquid carbon precursor for CO<sub>2</sub> adsorption (2015)

We report a new carbonaceous material derived from a liquid precursor, polyethylenimine (PEI) by chemical activation using KOH.
Serum Levels of Interleukin‐6 and C‐Reactive Protein Correlate With Body Mass Index Across the Broad Range of Obesity (2004)

The present results support evidence that obesity represents an inflammatory state. In morbid obesity, the correlation of only IL-6 and CRP with BMI, particularly in males, suggests that IL-6 may be secreted in an endocrine manner in proportion to the expansion of fat mass particularly in the abdominal region, with a corresponding increase in hepatic production of CRP.
Complementary code keying for RAKE-based indoor wireless communication (2003)

High data-rate wireless local-area-networks (WLAN) must operate in multipath environments such as inside office buildings and factories. Thus it is important that these WLAN's communicate using codes that perform well in these harsh conditions. This paper presents a new performance measure that quantifies the distance between codes in a multipath environment. This new measure indicates that complementary codes should perform well. We then propose a specific set of complementary codes known as complementary code keying (CCK) and show through the new distance measure and simulation that CCK codes do perform well in a multipath environment.
The biology and ecology of lotic Tardigrada (2000)

1 Tardigrades comprise a micrometazoan phylum that is a sister group of the arthropods. 2 They are components of the meiobenthos in lotic habitats, and ≈ 50–70 species have been reported in such habitats world-wide. Approximately 800 species have been identified from all marine, freshwater, and terrestrial habitats. 3 Taxonomy is based primarily on the morphology of the claws, buccal-pharyngeal apparatus, cuticle and eggs. 4 Reproductive modes include sexual reproduction (amphimixis) and parthenogenesis. The sexual condition of individuals may be either gonochorism, unisexuality, or hermaphroditism. Moulting occurs throughout the life of the tardigrade. 5 Latent states (cryptobiosis, including encystment, anoxybiosis, cryobiosis, osmobiosis and anhydrobiosis) enable tardigrades to withstand unfavourable environmental conditions. 6 Population densities, life histories, dissemination and biogeography of freshwater species are poorly known.