gebhart/patrepeval huggingface dataset:
Effect of disposable infection control barriers on light output from dental curing lights. (2004)

Two of the 3 disposable barriers produced a significant reduction in power density from the curing light. This drop in power was small and would probably not adversely affect the curing of composite resin. None of the barriers acted as light filters.
A case-based framework for self-healing paralysed components in Distributed Software applications (2014)

Self-healing is the ability of the software to detect faulty modules at execution time and replace or recover those without affecting other components. This paper proposes a framework for self-healing of Distributed Software System (DSS). Monitoring component is used to detect and record failures of DSS. Healing system will replace the paralysed components with healthy ones which will be initiated from the information given by Monitoring system to the proposed Reviver process. A failed case table is required to match the real life failures with it for identification of the solution. Distance between the failed case table and the recorded failures need to be calculated using exclusive OR since the solution closest to the fail can then be determined. Afterwards, the minimum distance between those is used to resolve the failure. This recovery is achieved through replacement of the faulty modules with redundant components in the DSS. Performance evaluation shows a desirable time consumption of less than the standard 0.7 seconds for component replacement in all the experimental iterations.
Preparation and CO2 adsorption of amine modified Mg–Al LDH via exfoliation route (2011)

In response to the recent focus on reducing carbon dioxide emission, the preparation and characterization of organically functionalized materials for use in carbon capture have received considerable attention. In this paper the synthesis of amine modified layered double hydroxides (LDHs) via an exfoliation and grafting synthetic route is reported. The materials were characterized by elemental analysis (EA), powder x-ray diffraction (PXRD), diffuse reflectance infrared Fourier transform spectrometer (DRIFTS) and thermogravimetric analysis (TGA). Adsorption of carbon dioxide on modified layered double hydroxides was investigated by TGA at 25–80 °C. 3-[2-(2-Aminoethylamino) ethylamino]propyl-trimethoxysilane modified MgAl LDH showed a maximum CO2 adsorption capacity of 1.76 mmol g−1 at 80 °C. The influence of primary and secondary amines on carbon dioxide adsorption is discussed. The carbon dioxide adsorption isotherms presented were closely fitted to the Avrami kinetic model.
Application of <i>Lactobacillus johnsonii</i> expressing phage endolysin for control of <i>Clostridium perfringens</i> (2014)

Clostridium perfringens is frequently found in food and the environment and produces potent toxins that have a negative impact on both human and animal health and particularly on the poultry industry. Lactobacillus johnsonii FI9785, isolated from the chicken gastrointestinal tract, has been demonstrated to exclude Cl. perfringens in poultry. We have investigated the interaction of wild-type Lact. johnsonii FI9785 or an engineered strain expressing a cell wall-hydrolysing endolysin with Cl. perfringens in vitro, using a batch culture designed to simulate human gastrointestinal tract conditions. Co-culture experiments indicated that acid production by Lact. johnsonii is important in pathogen control. The co-culture of the endolysin-secreting Lact. johnsonii with Cl. perfringens showed that the engineered strain had the potential to control the pathogen, but the ability to reduce Cl. perfringens numbers was not consistent. Results obtained indicate that survival of high numbers of Lact. johnsonii will be essential for effective pathogen control. Significance and impact of the study: The bacterium Lactobacillus johnsonii FI9785 reduces numbers of the pathogen Clostridium perfringens in vitro. Biocontrol was improved by engineering the strain to produce and export a cell wall-hydrolysing endolysin, but good survival of the producer strain is essential. The production of bacteriophage endolysins by commensal bacteria has the potential to improve competitive exclusion of pathogens in the gastrointestinal tract.
Electrospun Chitosan‐Coated Fibers of Poly(<scp>L</scp>‐lactide) and Poly(<scp>L</scp>‐lactide)/Poly(ethylene glycol): Preparation and Characterization (2007)

Fibrous poly(L-lactide) (PLLA) and bicomponent PLLA/poly(ethylene glycol) mats were prepared by electrospinning and then were coated with chitosan. The presence of chitosan coating was proved by scanning electron microscopy and by fluorescence microscopy. On contact with blood, the chitosan coating led to changes in erythrocyte shape and in their aggregation. The haemostatic activity of the mats increased with increasing chitosan content. Microbiological studies against Staphylococcus aureus revealed that the chitosan coating imparts antibacterial activity to the hybrid mats. The combined haemostatic and antibacterial activities render these novel materials suitable for wound-healing applications.
Adsorption and Oxidation of <i>n</i>-Butane on the Stoichiometric RuO<sub>2</sub>(110) Surface (2016)

We investigated the adsorption and oxidation of n-butane on a stoichiometric RuO2(110) surface using temperature-programmed reaction spectroscopy (TPRS) and density functional theory (DFT) calculations. At low coverage, molecularly adsorbed n-butane achieves a binding energy of ∼100 kJ/mol on RuO2(110), consistent with a strongly bound σ-complex that forms through dative bonding interactions between the n-butane molecule and coordinatively unsaturated (cus) Ru atoms. We find that a fraction of the n-butane reacts with the RuO2 surface during TPRS to produce CO, CO2, and H2O that desorb above ∼400 K and present evidence that adsorbed σ-complexes serve as precursors to the initial C–H bond cleavage and ultimately the oxidation of n-butane on RuO2(110). From measurements of the product yields as a function of surface temperature we estimate that the initial reaction probability of n-butane on RuO2(110) decreases from 9% to ∼4% with increasing surface temperature from 280 to 300 K and show that this temperature dependence is accurately described by a precursor-mediated mechanism. From kinetic analysis of the data we estimate a negative, apparent activation energy of −35.1 kJ/mol for n-butane dissociation on RuO2(110) and an apparent reaction prefactor of 6 × 10–8. The low value of the apparent reaction prefactor suggests that motions of the adsorbed n-butane precursor are highly restricted on the RuO2(110) surface. DFT calculations confirm that n-butane forms strongly bound σ-complexes on RuO2(110) and predict that C–H bond cleavage is strongly favored energetically. The n-butane binding energies and energy barrier for C–H bond cleavage predicted by DFT agree quantitatively with our experimental estimates.
A micromachined unit for tunnel current control (2002)

Tunneling current which passes through a small gap, in the order of 1 nm, between a sample and a sharpened metallic tip is extremely sensitive to the length of the gap. This phenomenon has been utilized for a scanning tunneling microscope (STM) which takes a topographic image of a sample surface, by using the variation of the tunneling current with atomic scale resolution. While controlled in the scale of atoms, a conventional STM has a scale of several centimeters. This paper deals with the development of an ultimately small tunneling unit using micromachining. Since the present unit has one degree-of-freedom, it cannot be used as an STM as itself but can be used as a displacement detector of a microstructure such as an AFM (Atomic Force Microscope) probe. The design, fabrication and performance of the micromachined tunneling unit is reported.
An IoT-Based Smart Utility Meter (2018)

Empowered by the Internet of Things (IoT) technology, the consumption of electricity, water, and gas by appliances in residential units can be collected more frequently nowadays. However, these meters are still discrete and placed in different locations in apartments or houses. This paper proposes the design, development, and testing of an integrated IoT-based smart utility meter that monitors the consumption of electricity, water, and gas. The meter has a unique network address and can be programmed remotely to read the three utility consumptions at any desired frequency that can be set by the utility service providers. End consumers can access the meter through a personal computer or a mobile handset. Google Map markers are used to the display the status of the meter showing the consumption of each utility and whether the meter is connected or disconnected.
Accuracy and Precision of Head Motion Information in Multi-Channel Free Induction Decay Navigators for Magnetic Resonance Imaging (2015)

Free induction decay (FID) navigators were found to qualitatively detect rigid-body head movements, yet it is unknown to what extent they can provide quantitative motion estimates. Here, we acquired FID navigators at different sampling rates and simultaneously measured head movements using a highly accurate optical motion tracking system. This strategy allowed us to estimate the accuracy and precision of FID navigators for quantification of rigid-body head movements. Five subjects were scanned with a 32-channel head coil array on a clinical 3T MR scanner during several resting and guided head movement periods. For each subject we trained a linear regression model based on FID navigator and optical motion tracking signals. FID-based motion model accuracy and precision was evaluated using cross-validation. FID-based prediction of rigid-body head motion was found to be with a mean translational and rotational error of 0.14±0.21 mm and 0.08±0.13°, respectively. Robust model training with sub-millimeter and sub-degree accuracy could be achieved using 100 data points with motion magnitudes of ±2 mm and ±1° for translation and rotation. The obtained linear models appeared to be subject-specific as inter-subject application of a "universal" FID-based motion model resulted in poor prediction accuracy. The results show that substantial rigid-body motion information is encoded in FID navigator signal time courses. Although, the applied method currently requires the simultaneous acquisition of FID signals and optical tracking data, the findings suggest that multi-channel FID navigators have a potential to complement existing tracking technologies for accurate rigid-body motion detection and correction in MRI.
InGaAs/InP double channel HEMT on InP (2003)

The authors discuss a novel HEMT (high electron mobility transistor) channel structure, consisting of InGaAs and InP, which can utilize both the high electron mobility of InGaAs at low electric field and InP's high drift velocity at high electric field. HEMTs with 0.6- mu m gates, a double channel, and a planar doped carrier supply layer show an extremely high transconductance of 1290 mS/mm. Such a device with a 0.7- mu m gate has a cutoff frequency of 68.7 GHz, which exceeds that of conventional InGaAs HEMTs by a factor of 1.3. It is shown that these characteristics may be related to an increase of the effective saturation velocity of electrons in the channel from 2.7*10/sup 7/ cm/s to 4.2*10/sup 7/ cm/s. Moreover, it is found that there is no kink in the I-V characteristics of double channel devices. These results indicate that InGaAs/In double-channel HEMTs have great potential for application in high-speed and high-power devices.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Improved procedure for the purification of thromboplastin apoprotein from porcine brain (1988)

Conference Article| August 01 1988 Improved procedure for the purification of thromboplastin apoprotein from porcine brain ROSS WILLIAMS; ROSS WILLIAMS 1Department of Biochemistry, Kings College London, Campden Hill Road, London W8 7AH, U.K. Search for other works by this author on: This Site PubMed Google Scholar ROY M. HOWELL ROY M. HOWELL 1Department of Biochemistry, Kings College London, Campden Hill Road, London W8 7AH, U.K. Search for other works by this author on: This Site PubMed Google Scholar Author and article information Publisher: Portland Press Ltd Received: November 27 1987 Online ISSN: 1470-8752 Print ISSN: 0300-5127 © 1988 Biochemical Society1988 Biochem Soc Trans (1988) 16 (4): 570–571. https://doi.org/10.1042/bst0160570 Article history Received: November 27 1987 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Facebook Twitter LinkedIn Email Cite Icon Cite Get Permissions Citation ROSS WILLIAMS, ROY M. HOWELL; Improved procedure for the purification of thromboplastin apoprotein from porcine brain. Biochem Soc Trans 1 August 1988; 16 (4): 570–571. doi: https://doi.org/10.1042/bst0160570 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 ContentAll JournalsBiochemical Society Transactions Search Advanced Search This content is only available as a PDF. © 1988 Biochemical Society1988 Article PDF first page preview Close Modal You do not currently have access to this content.
Establishment and characterization of a cloned line of C3H mouse embryo cells sensitive to postconfluence inhibition of division. (1973)

A line of C3H mouse embryo cells highly sensitive to postconfluence inhibition of cell division, designated C3H/10T1/2, has been established, and a clone from this line (clone 8) has been characterized at early and late passages (200 to 450 days in culture). The cells of clone 8 are approximately 1730 cu µm in volume, their plating efficiency is 12 to 30%, their average generation time is 15.5 hr, and their saturation density is 2.9 to 3.8 × 104 cells/sq cm. The cell survival is 30% after freezing in 10% dimethyl sulfoxide and storage in liquid nitrogen. The cells of this clone are negative with respect to the spontaneous expression of C-type RNA murine viruses and viral antigens. Tests for mycoplasma contamination are negative. All the cells of this line are aneuploid with a stable mode of 81 chromosomes (40 to 60% of cells). Tests for tumorigenicity at all passages were negative. No spontaneous transformation in vitro has been observed in the stock cultures transferred on a regular schedule.
Etude physiologique et taxonomique du genre <i>Alcaligenes</i>: <i>A</i>. <i>denitrificans</i>, <i>A</i>. <i>odorans</i> et <i>A</i>. <i>faecalis</i> (1978)

We have studied 43 strains of the species Alcaligenes dentrificans, A. odorans, and A. faecalis. Twenty-five of them were isolated by enrichment culture on minimal medium containing an organic acid (L-malate, succinate, tartrate, adipate, or itaconate) and N2O as a respiratory electron acceptor. These constitute a single phenon with the A. dentrificans strain type and 9 other strains isolated from clinical specimens. However, strain 4 differs from the other 34 strains in 12 nutritional characters, in its ability to effect a meta cleavage of diphenols, and by the absence of tetrathionate reductase. The percentages of G + C are the following: strains isolated from soil, 66.4 +/- 1.1; collection strains, 67.0 +/- 1.3. The 5 strains of A. odorans differ from the 34 strains of A. denitrificans (not including strain 4) in their inability to denitrify nitrate and use D-saccharate, adipate, pimelate, suberate, beta-hydroxy-beta-methylglutarate meso-tartrate, azelate, and itaconate. Their percentage of G + C is much lower: 56.1 +/- 0.4. From the nutritional point of view the 3 strains of A. faecalis resemble A. dentrificans. However, they differ from the latter by their inability to grow anaerobically on NO3-, NO2-, N2O, and by a slightly lower percentage of G+ C: 64.3 +/- 0.0. The 43 strains synthesize poly-beta-hydroxybutyric acid. None of them is chemolithotrophic.
Effects of shear flow on phase nucleation and crystallization (2016)

Classical nucleation theory offers a good framework for understanding the common features of new phase formation processes in metastable homogeneous media at rest. However, nucleation processes in liquids are ubiquitously affected by hydrodynamic flow, and there is no satisfactory understanding of whether shear promotes or slows down the nucleation process. We developed a classical nucleation theory for sheared systems starting from the molecular level of the Becker-Doering master kinetic equation and we analytically derived a closed-form expression for the nucleation rate. The theory accounts for the effect of flow-mediated transport of molecules to the nucleus of the new phase, as well as for the mechanical deformation imparted to the nucleus by the flow field. The competition between flow-induced molecular transport, which accelerates nucleation, and flow-induced nucleus straining, which lowers the nucleation rate by increasing the nucleation energy barrier, gives rise to a marked nonmonotonic dependence of the nucleation rate on the shear rate. The theory predicts an optimal shear rate at which the nucleation rate is one order of magnitude larger than in the absence of flow.
Antitumor effects of Newcastle Disease Virus in vivo: Local versus systemic effects (2001)

Newcastle Disease Virus (NDV) has interesting anti-neoplastic and pleiotropic immune stimulatory properties. The virus preferentially replicates in and kills tumor cells and appears to be safe and to varying degrees effective in phase II-clinical studies in the US and in Europe. Here we have compared various lytic and non-lytic strains of NDV with regard to their antitumor effects after local or systemic application. As tumor models we used human metastatic melanoma xenotransplants in nude mice and murine metastatic colon carcinoma (CT26), renal carcinoma (Renca) and lymphoma (ESb) cell lines. Intra or peri-tumoral application of NDV or NDV infected tumor cells showed more pronounced antitumor activity than systemic application even when in the latter case much higher dose ranges were used. In the CT26 colon carcinoma model the non-lytic strain Ulster showed stronger antitumor activity than the lytic strain 73T. In the human MeWo melanoma xentransplant model strong antitumor bystander effects were observed by 20% admixture of melanoma cells pre-infected in vitro with NDV (either strain Ulster or Italien). Virus therapy of pre-established human melanomas by intra-tumoral injection of NDV was effective with the lytic strain Italien but not with the non-lytic strain Ulster. Systemic anti-metastatic effects were never observed with NDV alone in contrast to previous results obtained with NDV modified tumor vaccines.
Characterisation of <i>Lactobacillus fermentum</i> SM‐7 isolated from koumiss, a potential probiotic bacterium with cholesterol‐lowering effects (2010)

The results suggested that L. fermentum SM-7 is a potential probiotic bacterium with cholesterol-lowering effects.
Imperfect voxelized shadow volumes (2013)

Voxelized shadow volumes [Wyman 2011] provide a discretized view-dependent representation of shadow volumes, but are limited to point or directional lights. We extend them to allow dynamic volumetric visibility from area light sources using imperfect shadow volumes. We show a coarser visibility sampling suffices for area lights. Combining this coarser resolution with a parallel shadow volume construction enables interactive rendering of dynamic volumetric shadows from area lights in homogeneous single-scattering media, at under 4x the cost of hard volumetric shadows.
Boron Carbide Hollow Microspheres Prepared by Polymer Derived Method (2017)

Polycarborane, as a kind of boron carbide polymeric precursor, was synthesized by hydroboration reaction with styrene, divinylbenzene as the carbon resource and borane as the boron resource in this work. The polymer precursor which had good solubility and film-forming ability was soluble in most organic solvents. Furthermore, polycarborane was used to fabricate hollow polymer microspheres by emulsion technique. The compact boron carbide ceramic hollow microspheres were prepared by ceramization of the polymer microspheres. Ceramic microspheres with diameters ranging from 1 to 1.5 mm and shell thicknesses from 15 to 30 μm were easily prepared by changing emulsion composition and curing conditions. Micrographs of SEM showed that the hollow microspheres had smooth surface and good sphericity. These boron carbide ceramic hollow microspheres are of significant importance for application in the field of neutron moderator in nuclear reactors, power generation in deep space flight, etc.
A COMPARATIVE STUDY ON N-USE EFFICIENCY OF CRIMSON SEEDLESS, SUPERIOR AND THOMPSON SEEDLESS GRAPEVINE VARIETIES (2007)

A pot experiment was carried out to evaluate the growth and N-use efficiency of three grapevine varieties (Crimson Seedless, Superior and Thompson seedless). Nitrogen was added at five rates: 0, 10, 40, 80 and 120 mg N kg-1 as ammonium nitrate (33.5 % N). Plant samples were collected after two and six weeks from the ending of nitrogen application treatments. The obtained results showed that, irrespective of varieties, increasing N-rates increased root, shoot growth and N-content but decreased N-use efficiency. However, Crimson recorded the highest values of all root, shoot growth parameters, N-content and N-use efficiency compared with the other two varieties. On the other hand, the interaction effect of N-rates and grapevine varieties showed that Crimson had the highest root length, root fineness values, root and shoot dry weight, shoot length, leaf area, N-content. Crimson recorded the highest nitrogen use efficiency at all N-rates compared with the two other grapevine varieties. Based on the result of the present study, Crimson variety can produce well under low N level and responded well to N-application.
Developmental arrest of the human malaria parasite <i>Plasmodium falciparum</i> within the mosquito midgut via <i>CTRP</i> gene disruption (2000)

Apicomplexan protozoa possess a family of micronemal and cell surface-associated proteins, each comprised a combination of cell-adhesive vertebrate von Willebrand factor (vWF)-like A domains and thrombospondin (TSP) type 1-like domains. The human malaria parasite Plasmodium falciparum has in the extracellular portion of the CS protein TRAP-related protein (CTRP) six tandemly arrayed A domains followed by seven TSP type 1-like domains, whereas a second member of this family, thrombospondin-related anonymous protein (TRAP), contains a single vWF-like A domain and a single TSP type 1-like domain. Here we show that CTRP transcripts are present within the infected mosquito midgut and that CTRP protein is expressed with a punctate distribution and a predominance at the apical end of mosquito midgut-stage ookinetes. This expression pattern is analogous to micronemal expression of TRAP in Plasmodium sporozoites. Disruption of the CTRP gene by homologous recombination in cultures of the human malaria parasite P. falciparum demonstrates that CTRP is essential for mosquito midgut development. Oocyst formation was never observed following membrane feeds of CTRP disruptant lines to Anopheline mosquitoes, despite the development of mature ookinetes. We propose that CTRP is involved in essential recognition or motility processes at the ookinete cell surface within the mosquito midgut.