gebhart/patrepeval huggingface dataset:
Iron Corrosion Induced by Nonhydrogenotrophic Nitrate-Reducing Prolixibacter sp. Strain MIC1-1 (2014)

Microbiologically influenced corrosion (MIC) of metallic materials imposes a heavy economic burden. The mechanism of MIC of metallic iron (Fe(0)) under anaerobic conditions is usually explained as the consumption of cathodic hydrogen by hydrogenotrophic microorganisms that accelerates anodic Fe(0) oxidation. In this study, we describe Fe(0) corrosion induced by a nonhydrogenotrophic nitrate-reducing bacterium called MIC1-1, which was isolated from a crude-oil sample collected at an oil well in Akita, Japan. This strain requires specific electron donor-acceptor combinations and an organic carbon source to grow. For example, the strain grew anaerobically on nitrate as a sole electron acceptor with pyruvate as a carbon source and Fe(0) as the sole electron donor. In addition, ferrous ion and l-cysteine served as electron donors, whereas molecular hydrogen did not. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain MIC1-1 was a member of the genus Prolixibacter in the order Bacteroidales. Thus, Prolixibacter sp. strain MIC1-1 is the first Fe(0)-corroding representative belonging to the phylum Bacteroidetes. Under anaerobic conditions, Prolixibacter sp. MIC1-1 corroded Fe(0) concomitantly with nitrate reduction, and the amount of iron dissolved by the strain was six times higher than that in an aseptic control. Scanning electron microscopy analyses revealed that microscopic crystals of FePO4 developed on the surface of the Fe(0) foils, and a layer of FeCO3 covered the FePO4 crystals. We propose that cells of Prolixibacter sp. MIC1-1 accept electrons directly from Fe(0) to reduce nitrate.
Comments on ``NMR Fluorine-Fluorine Coupling Constants in Saturated Organic Compounds'' (1962)

First Page
Dynamic thermal rating of power lines in raining conditions - model and measurements (2016)

In recent years there has been increased interest in dynamic assessment of transfer capability of transmission lines in power systems based on real-time measurements of atmospheric data. The dynamic transfer capability enables the transmission system operators to utilize existing power lines more effectively and more safely with regards to critical power line temperatures and to enforce safety measures during potentially dangerous events. A new dynamic thermal rating model for power lines, based on existing CIGRE assumptions, is presented, which is upgraded to maintain also rainy conditions that are not considered in CIGRE. The results of presented model are compared and validated with measurements from a testing site.
13C-NMR spectroscopy of human atherosclerotic lesions. Relation between fatty acid saturation, cholesteryl ester content, and luminal obstruction. (1994)

Previous investigations have used 13C-nuclear magnetic resonance (NMR) spectroscopy to demonstrate the similarities between lipoproteins and the mobile lipids of atheroma. In this study, we tested the hypothesis that 13C-NMR changes are related to indices of histological severity. We classified 20 human arteries according to their obstruction ratio (OR), defined as the ratio of the plaque area to the area delimited by the external elastic lamina. In group A, OR was < 40%, and in group B, OR was > 40%. We analyzed at 9.4 T the resonances of unsaturated (UFA) and polyunsaturated (PUFA) carbons, the resonances of the carbons 19 and 21 (C19, C21) of cholesteryl esters (CE), the methine carbon peak of fatty acids (CH2)n, the choline peak from phospholipids (PL), and the glycerol peak from triglyceride (TG). The UFA/PUFA, UFA/(CH2)n, and PUFA/(CH2)n ratios are markers of fatty acid saturation. (C19, C21)/(CH2)n, choline/(CH2)n, and glycerol/(CH2)n are indices of CE, PL, and TG content, respectively. UFA/PUFA in group A is 1.15 +/- 0.34 versus 1.63 +/- 0.32 in group B (P = .005). PUFA/(CH2)n is 0.26 +/- 0.10 in group A versus 0.16 +/- 0.04 in group B (P = .049). C19, C21/(CH2)n in group A is 0.32 +/- 0.15 versus 0.63 +/- 0.23 for group B (P = .003). No significant difference was found in UFA/(CH2)n or in the TG or PL ratios. 13C spectral examination of human atherosclerosis demonstrates decreased resonances for polyunsaturated fatty acyl chains and cholesteryl esters with increasing obstruction.
Development and Stability of Human Faecal Flora in the Intestine of Ex-germ-free Mice (1991)

Development of the faecal flora of ex-germ-free BALB/c mice inoculated with faecal dilutions of two healthy human adults was examined. Although the numbers of Enterobacteriaceae in the developing flora were high, compared with those in the faeces used for inoculation, during the first 2 d, they decreased markedly from the third day. Conversely, anaerobic bacteria were present in low concentrations on day 1 and increased thereafter. On day 3, anaerobic bacteria which were dominant in the human faeces became dominant in the ex-germ-free mice. The development of the faecal flora of these mice resembled that of neonatal animals and humans. Interestingly, bifidobacteria were eliminated from the ex-germ-free mice inoculated with faeces from one of the donors within 2–8 wk, while other bacteria remained constant. The elimination of bifidobacteria seemed to be dependent on the composition of flora of the inoculated sample. Ex-germ-free mice with a Bifidobacterium-free human faecal flora may provide a suitable animal model for studying their role in human health.
Improving Throughput and Fairness in WLANs through Dynamically Optimizing Backoff (2005)

Given the limited channel capacity in wireless LANs, it is important to achieve high throughput and good fairness through medium access control (MAC) schemes. Although many schemes have been proposed to enhance throughput or fairness of the original IEEE 802.11 standard, they either fail to consider both throughput and fairness, or to do so with complicated algorithms. In this paper, we propose a new MAC scheme that dynamically optimizes each active node's backoff process. The key idea is to enable each node to adjust its Contention Window (CW) to approach the optimal one that will maximize the throughput. Meanwhile, when the network enters into steady state in saturated case, i.e., under heavy traffic load, all the nodes will maintain approximately identical CWs, which guarantees fair share of the channel among all nodes. A distinguishing feature of this scheme is the use of an index called average channel idle interval for optimizing the backoff process without estimating the number of active nodes in networks. We show through theoretical analysis that the average channel ideal interval can represent current network traffic load and indicate the optimal CW. Moreover, since it can be obtained through direct measurement, our scheme eliminates the need for complicated estimation of the number of active nodes as required in previous schemes, which makes our schemes simpler and more reliable when network traffic changes frequently. Through simulation comparison with previous schemes, we show that our scheme can greatly improve the throughput no matter the network is in saturated or non-saturated case, while maintaining good fairness.
3D Printing Ionogel Auxetic Frameworks for Stretchable Sensors (2019)

Abstract Ionogels are an emerging class of soft materials that exhibit ionic conductivity and thermal stability without the need to replenish ions or the addition of conductive particle fillers. An ionogel ink is reported for direct‐write 3D printing to fabricate conductive structures that can vary in the printed object geometries. This approach relies on a shear‐thinning ionogel ink that can be extruded to afford self‐supporting constructs. After a brief UV cure, the printed construct is transformed into a mechanically tough, transparent structure that is ionically conductive. Upon application of stretching and twisting loads, the 3D‐printed objects exhibit detectable changes in conductivity. To demonstrate the versatility of rapid prototyping with the ionogel inks, an auxetic structure is 3D printed and tested as a strain sensor. The printed auxetic structure exhibits an electrical response to strain, but also demonstrates increased extensibility and operational range in comparison to a casted bulk film with the same outer dimensions.
Isolation of Uridine 5'-Diphosphate L-Rhamnose from Salmonella typhimurium (1966)

Abstract A nucleotide isolated from a rough mutant of Salmonella typhimurium LT2 has been identified as uridine 5'-diphosphate L-rhamnose on the basis of chemical, enzymatic, and chromatographic analysis. Other nucleotide-linked sugars were isolated from this organism and tentatively identified as cytidine diphosphate abequose, cytidine diphosphate glucose, uridine diphosphate glucose, uridine diphosphate galactose, deoxythymidine diphosphate rhamnose, adenosine diphosphate hexose, and guanosine diphosphate mannose.
Use of a Covered Stent Modification to Produce a Transcatheter Valve: Laboratory and Animal Testing (2005)

Stent-based transcatheter valves continue to require large sheaths inappropriate for deployment in children. Low-profile covered stent valves (CSVs) were constructed by removing triangular sections from two sides of partially expanded Palmaz P308 stents before covering the stents with 0.1 mm polytetrafluoroethylene. Valves were carefully crimped onto balloon catheters and deployed in a pulsatile flow loop. With fixed afterload and pump output, flow, degree of stenosis, effect on pulse pressure, and ease of deployment were determined for each valve. In vivo transcatheter feasibility studies were then performed by disabling the aortic valve of two 25-kg pigs, and deploying transcatheter CSVs into their descending aorta. All transcatheter valves deployed consistently via sheaths three French sizes larger than the recommended sheath for their balloon and none created significant obstruction. With the bicuspid and supravalvar CSVs, the flow was 64% and 79% (respectively) of a commercially available valve. Angiograms revealed excellent acute CSV function after deployment with only mild regurgitation and without significant obstruction to systolic flow. Although long-term testing is required, a modified CSV design may have utility in low-profile pediatric transcatheter valve replacement.
Inhibition of quorum-sensing-mediated biofilm formation in Cronobacter sakazakii strains (2016)

The present study investigated plant extracts for their anti-quorum-sensing (QS) potential to inhibit the biofilm formation in Cronobacter sakazakii strains. The bioassay based on loss of pigment production by Chromobacterium violaceum 026 and Agrobacterium tumefaciens NTL4(pZLR4) was used for initial screening of the extracts. Further, the effect of extracts on the inhibition of QS-mediated biofilm in C. sakazakii isolates was evaluated using standard crystal violet assay. The effect on biofilm texture was studied using SYTO9 staining and light and scanning electron microscopy. Among the tested extracts, Piper nigrum and Cinnamomum verum at 100 ppm resulted in 78 and 68 % reduction in the production of violacein as well as blue-green colour in both biosensor strains. A higher inhibitory activity (>50 %) on biofilm formation in C. sakazakii was observed for Pip. nigrum and Cin. verum, whereas the other extracts possessed moderate (25-50 %) and minimal (<25 %) inhibitory activities. Further, the fluorescent and scanning electron microscopic images indicated a major disruption in the architecture of biofilms of tested strains by Pip. nigrum. This study points to the possibility of using Pip. nigrum and Cin. verum as inhibitor of QS-mediated biofilm formation by C. sakazakii that could be further explored for novel bioactive molecules to limit the emerging infections of C. sakazakii.
Verapamil eluting stents as a possible treatment for vasospasm after subarachnoid hemorrhage (2016)

Development of verapamil eluting stents that elute drug over the time course typical of cerebral vasospasm, and for either immediate or prophylactic treatment, is technically feasible. Further in vitro and in vivo studies are required to determine whether this can improve the outcome of patients after subarachnoid hemorrhage.
Why Human TNF is Not Tumour Necrosis Factor (2020)

Abraham Karpas* Author Affiliations Emeritus Assistant Director of Research, Department of Haematology, Cambridge University Clinical School, United Kingdom Received: October 30, 2020 | Published: November 16, 2020 Corresponding author: Abraham Karpas, Emeritus Assistant Director of Research, Department of Haematology, Cambridge University Clinical School, United Kingdom DOI: 10.26717/BJSTR.2020.31.005177
Towards junking the PBX (2001)

We describe the architecture and implementation of our Internet teleph ony test-bed intended to replace the departmental PBX (telephone switch). It interworks with the traditional telephone networks via a PSTN/IP gateway. It also serves as a corporate or campus infrastructure for existing and future services like web, email, video and streaming media. Initially intended for a few users, it will eventually replace the plain old telephones from our offices, due to the cost benefit and new services it offers. We also discuss common inter-operability problems between the PBX and the gateway.
Risk and characteristics of gastric carcinoma in the chow chow dog. (2020)

Gastric carcinoma is not commonly reported in dogs. There is an increased risk, however, in certain breeds such as the Belgian Tervuren. Review of the Veterinary Medical Database (VMDB) established an increase in risk for gastric carcinoma in the chow chow breed. In 106 chow chow dogs signs commenced, on average, 3 weeks before definitive diagnosis. The most common clinical signs were vomiting, loss of appetite, diarrhea, and melena. Most affected dogs were euthanized, without treatment, within 2 weeks of diagnosis. Two dogs which were treated aggressively (surgery and chemotherapy) survived a considerably longer time (12 and 36 months). Histologically, these chow chow dogs comprised a similar histologic type as familial gastric carcinoma in humans; diffuse-type carcinoma that was enriched in the signet ring and mucinous variants. Understanding the pathogenesis of diffuse gastric carcinoma in the chow chow dog may provide insight into the biology of this aggressive cancer in humans.
Chloroplast DNA Dynamics: Copy Number, Quality Control and Degradation (2018)

Endosymbiotically originated chloroplast DNA (cpDNA) encodes part of the genetic information needed to fulfill chloroplast function, including fundamental processes such as photosynthesis. In the last two decades, advances in genome analysis led to the identification of a considerable number of cpDNA sequences from various species. While these data provided the consensus features of cpDNA organization and chloroplast evolution in plants, how cpDNA is maintained through development and is inherited remains to be fully understood. In particular, the fact that cpDNA exists as multiple copies despite its limited genetic capacity raises the important question of how copy number is maintained or whether cpDNA is subjected to quantitative fluctuation or even developmental degradation. For example, cpDNA is abundant in leaves, where it forms punctate structures called nucleoids, which seemingly alter their morphologies and numbers depending on the developmental status of the chloroplast. In this review, we summarize our current understanding of 'cpDNA dynamics', focusing on the changes in DNA abundance. A special focus is given to the cpDNA degradation mechanism, which appears to be mediated by Defective in Pollen organelle DNA degradation 1 (DPD1), a recently discovered organelle exonuclease. The physiological significance of cpDNA degradation in flowering plants is also discussed.
Playful Interactions with Body Channel Communication (2017)

Conquer it! is a lightweight proof-of-concept exertion game that demonstrates Body Channel Communication (BCC) in a smart environment. BCC employs the human body as communication medium to transfer digital data between physical objects by using electric fields that are coupled to the body. During the game participants are provided with BCC wearables, each of which represents a specific RGB color. When the user stands, walks on, or touches with a hand the BCC tiles, communication is automatically established: the corresponding sensor area decodes the message (RGB value) originating from the wearable and lights up according to that color for two seconds. The goal of the game is to try to light up as many tile cells simultaneously as possible. Participants can try to keep alive the colors by continuously moving around on the tiles. In the multiuser version, by stepping on or touching a blinking cell, users can immediately claim the area and overwrite the color of that subtile.
An equalization technique concatenated with channel estimation for ATSC 3DTV receivers (2015)

In August 2014, ATSC adapted 3DTV standard which is service compatible 3DTV using main and mobile hybrid delivery (SC-MMH), and the 3DTV standard uses the ATSC M/H transmission system. Because the M/H system transmits both main and mobile training sequences for equalization, ATSC 3DTV reception performance can be improved by using both training sequences. This paper introduces the LMS-DFE and proposes an equalizer concatenated with channel estimation. And the computer simulations were performed on Rician channel of K = 0 dB and Rayleigh channel in order to evaluate the performance of both equalizers. Simulation result shows that the proposed equalizer works well on both channels within the time of a half VSB frame.
Synthesis of (+)-lasalocid aldehyde (1989)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of (+)-lasalocid aldehydeDennis Lee and W. Clark StillCite this: J. Org. Chem. 1989, 54, 19, 4715–4717Publication Date (Print):September 1, 1989Publication History Published online1 May 2002Published inissue 1 September 1989https://pubs.acs.org/doi/10.1021/jo00280a054https://doi.org/10.1021/jo00280a054research-articleACS PublicationsRequest reuse permissionsArticle Views279Altmetric-Citations2LEARN 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
Hyaluronic-Acid–Hydroxyapatite Colloidal Gels Combined with Micronized Native ECM as Potential Bone Defect Fillers (2016)

One of the grand challenges in translational regenerative medicine is the surgical placement of biomaterials. For bone regeneration in particular, malleable and injectable colloidal gelsare frequently designed to exhibit self-assembling and shear-response behavior which facilitates biomaterial placement in tissue defects. The current study demonstrated that by combining native extracellular matrix (ECM) microparticles, i.e., demineralized bone matrix (DBM) and decellularized cartilage (DCC), with hyaluronic acid (HA) and hydroxyapatite (HAP) nanoparticles, a viscoelastic colloidal gel consisting exclusively of natural materials was achieved. Rheological testing of HA-ECM suspensions and HA-HAP-ECM colloidal gels concluded either equivalent or substantially higher storage moduli (G' ≈ 100-10 000 Pa), yield stresses (τ<sub>y</sub> ≈ 100-1000 Pa), and viscoelastic recoveries (G'<sub>recovery</sub> ≥ 87%) in comparison with controls formulated without ECM, which indicated a previously unexplored synergy in fluid properties between ECM microparticles and HA-HAP colloidal networks. Notable rheological differences were observed between respective DBM and DCC formulations, specifically in HA-HAP-DBM mixtures, which displayed a mean 3-fold increase in G' and a mean 4-fold increase in τ<sub>y</sub> from corresponding DCC mixtures. An initial in vitro assessment of these potential tissue fillers as substrates for cell growth revealed that all formulations of HA-ECM and HA-HAP-ECM showed no signs of cytotoxicity and appeared to promote cell viability. Both DBM and DCC colloidal gels represent promising platforms for future studies in bone and cartilage tissue engineering. Overall, the current study identified colloidal gels constructed exclusively of natural materials, with viscoelastic properties that may facilitate surgical placement for a wide variety of therapeutic applications.
Influence of Cardiopulmonary Bypass on Platelet and Neutrophil Accumulations in Internal Organs (1997)

The authors employed gamma scintigraphy to quantify the post bypass accumulations of platelets and neutrophils in the lung, liver, and heart of adult pigs subjected to a standard 90 min regimen of normothermic cardiopulmonary bypass (CPB). Coated and uncoated microporous polypropylene oxygenator circuits were studied for Cobe Duo (Arvada, CO) oxygenators (amphophilic silicone-caprolactone oligomer [SMA] coating, n = 8 each) and Medtronic Maxima (Irvine, CA) oxygenators (Carmeda heparin coating, n = 5 each). Images of cells in the organs (deposited + blood pool) were corrected for tissue absorption and other factors and compared for a 2 hr period post CPB, using repeat measures ANOVA and rank tests. Platelet accumulations in internal organs correlated positively with whole blood platelet counts and negatively with platelet deposits in oxygenators during CPB. In general, uncoated CPB circuits significantly reduced platelet and neutrophil accumulations in lung, liver, and heart versus preCPB controls for the post CPB interval, for both systems. The SMA treatment significantly increased platelet accumulations versus uncoated controls in lung, liver, and heart for the 2 hr period, including the majority of the post CPB sampling intervals; platelet densities did not reach preCPB levels. Neutrophil accumulations were unaffected by the SMA coating. Carmeda heparin treatment significantly increased platelet accumulations in the liver, but not lung or heart. Despite preservation of circulating neutrophils observed with the Carmeda heparin treatment, neutrophil accumulations in internal organs were not elevated post CPB.
Vortex-Induced Strumming Vibrations of Marine Cables With Attached Masses (1984)

Twenty full-scale test runs were conducted during the cable strumming experiments reported in this paper. These consisted of ten pairs of equivalent tests conducted in air and in water with a cable fitted with arrays of attached masses. The measured in-air natural frequencies are in good agreement with computed code predictions for the second and higher (up to n = 5) cable modes. The first mode frequency apparently was influenced by the sag of the cable. The measured mode shapes of the cable vibrations in water also are in agreement with the computed mode shapes. For the experiments in water the computed and measured natural frequencies are in good agreement. Drag coefficients in the range CD = 2.4 to 3.2 were commonly observed when the cable-attached mass system was strumming due to the water flow past it.