gebhart/patrepeval huggingface dataset:
Desferrioxamine E produced by Streptomyces griseus stimulates growth and development of Streptomyces tanashiensis (2005)

The authors previously reported that interspecific stimulatory events between Streptomyces species for antibiotic production and/or morphological differentiation mediated by putative diffusible metabolites take place at a high frequency. This paper reports the isolation and characterization of a substance produced by Streptomyces griseus that stimulates the growth and development of Streptomyces tanashiensis. The substance was purified from the culture supernatant of S. griseus by using anion-exchange chromatography, gel filtration chromatography and reverse-phase HPLC. FAB-MS and NMR analyses of the purified preparation indicated the substance to be desferrioxamine E (synonym: nocardamine), a siderophore that is widely produced by Streptomyces species and related organisms. Similar stimulatory effects on the growth and development of S. tanashiensis were exerted by desferrioxamine E produced by another actinomycete strain, but not by other siderophores tested, including ferrichrome and nocobactin and free ferric ion. An exogenous supply of desferrioxamine E stimulated secondary metabolite formation and/or morphological differentiation in various actinomycete strains. Disruption of the desferrioxamine biosynthesis gene cluster in Streptomyces coelicolor A3(2) abolished the production of desferrioxamine E and the activity to stimulate the growth and differentiation of S. tanashiensis. The S. coelicolor mutant showed impaired growth and development on Bennett's/glucose agar medium, but it was rescued by the exogenous supply of desferrioxamine E. These results indicate that desferrioxamines play an important role in streptomycete physiology. Similar to several pathogenic bacteria and fungi, S. tanashiensis may be defective in the production of siderophores; however, it can utilize the siderophores excreted by other organisms.
Research on Multidomain Authentication of IoT Based on Cross-Chain Technology (2020)

Blockchain is an innovated and revolutionized technology, which has attracted wide attention from academia and industry. At present, blockchain has been widely used in certificate management and credential delivery in network access authentication. In a large-scale multidomain Internet of Things (IoT) environment, one of the important issues is cross-domain key sharing and secure data exchange between different IoT. In this paper, aiming at the multidomain authentication requirements of the IoT, this paper introduces the blockchain cross-chain technology into the cross-domain authentication process of the IoT and proposes an effective cross-domain authentication scheme of the IoT based on the improved PBFT algorithm. First, an architecture of blockchain-based cross-domain authentication is proposed. Then, the block data structure is designed in order to enhance the function of access authentication. Third, the authentication process is realized by intelligent contract. The authentication information is encrypted and distributed by a key sharing method to ensure the security of authentication data. Simulation results show that the proposed scheme has significant advantages in security and availability.
Enhanced Hole Mobility in Regioregular Polythiophene Infiltrated in Straight Nanopores (2005)

Abstract We demonstrate that the hole mobility in regioregular poly(3‐hexylthiophene) can be enhanced by a factor of 20 by infiltrating it into straight nanopores of anodic alumina. Optical characterization shows that the polymer chains are partially aligned in the charge‐transport direction.
Nutritional and health benefits of pulses (2014)

Pulses (beans, peas, and lentils) have been consumed for at least 10 000 years and are among the most extensively used foods in the world. A wide variety of pulses can be grown globally, making them important both economically as well as nutritionally. Pulses provide protein and fibre, as well as a significant source of vitamins and minerals, such as iron, zinc, folate, and magnesium, and consuming half a cup of beans or peas per day can enhance diet quality by increasing intakes of these nutrients. In addition, the phytochemicals, saponins, and tannins found in pulses possess antioxidant and anti-carcinogenic effects, indicating that pulses may have significant anti-cancer effects. Pulse consumption also improves serum lipid profiles and positively affects several other cardiovascular disease risk factors, such as blood pressure, platelet activity, and inflammation. Pulses are high in fibre and have a low glycemic index, making them particularly beneficial to people with diabetes by assisting in maintaining healthy blood glucose and insulin levels. Emerging research examining the effect of pulse components on HIV and consumption patterns with aging populations indicates that pulses may have further effects on health. In conclusion, including pulses in the diet is a healthy way to meet dietary recommendations and is associated with reduced risk of several chronic diseases. Long-term randomized controlled trials are needed to demonstrate the direct effects of pulses on these diseases.
Investigation of instabilities of photomultiplier tubes for multi-element detector systems (2018)

This paper presents an investigation into response of instabilities of EJ-309 liquid scintillator detectors. A brief review of common instabilities associated with the photomultiplier tubes (PMTs) is presented. The energy response, energy linearity and warm-up duration of sixteen EJ-309 detectors coupled to PMTs tested is presented. A single-channel mixed-field analyser digitiser system was used for data acquisition. Furthermore, timing information of the common instability behaviours is presented alongside suggestions on how to correct for such instabilities. The results show that a single-energy energy calibration is sufficient to ensure energy linearity; the detectors must be warmed-up by ∼45 minutes before stable response is achieved; the re-warm-up duration depends on the duration of the high voltage supplied to the PMT being switched off. The results indicate that the PMTs take approximately 2 hours to reach "cold" state, where a full warm-up duration must be applied. The reported instability effects will be taken into account when developing a sophisticated auto-calibration methodology for a multi-element scintillator detector system.
RC1339/APRc from Rickettsia conorii Is a Novel Aspartic Protease with Properties of Retropepsin-Like Enzymes (2014)

Members of the species Rickettsia are obligate intracellular, gram-negative, arthropod-borne pathogens of humans and other mammals. The life-threatening character of diseases caused by many Rickettsia species and the lack of reliable protective vaccine against rickettsioses strengthens the importance of identifying new protein factors for the potential development of innovative therapeutic tools. Herein, we report the identification and characterization of a novel membrane-embedded retropepsin-like homologue, highly conserved in 55 Rickettsia genomes. Using R. conorii gene homologue RC1339 as our working model, we demonstrate that, despite the low overall sequence similarity to retropepsins, the gene product of rc1339 APRc (for Aspartic Protease from Rickettsia conorii) is an active enzyme with features highly reminiscent of this family of aspartic proteases, such as autolytic activity impaired by mutation of the catalytic aspartate, accumulation in the dimeric form, optimal activity at pH 6, and inhibition by specific HIV-1 protease inhibitors. Moreover, specificity preferences determined by a high-throughput profiling approach confirmed common preferences between this novel rickettsial enzyme and other aspartic proteases, both retropepsins and pepsin-like. This is the first report on a retropepsin-like protease in gram-negative intracellular bacteria such as Rickettsia, contributing to the analysis of the evolutionary relationships between the two types of aspartic proteases. Additionally, we have also shown that APRc is transcribed and translated in R. conorii and R. rickettsii and is integrated into the outer membrane of both species. Finally, we demonstrated that APRc is sufficient to catalyze the in vitro processing of two conserved high molecular weight autotransporter adhesin/invasion proteins, Sca5/OmpB and Sca0/OmpA, thereby suggesting the participation of this enzyme in a relevant proteolytic pathway in rickettsial life-cycle. As a novel bona fide member of the retropepsin family of aspartic proteases, APRc emerges as an intriguing target for therapeutic intervention against fatal rickettsioses.
Data debugging with continuous testing (2013)

Today, systems rely as heavily on data as on the software that manipulates those data. Errors in these systems are incredibly costly, annually resulting in multi-billion dollar losses, and, on multiple occasions, in death. While software debugging and testing have received heavy research attention, less effort has been devoted to data debugging: discovering system errors caused by well-formed but incorrect data. In this paper, we propose continuous data testing: using otherwise-idle CPU cycles to run test queries, in the background, as a user or database administrator modifies a database. This technique notifies the user or administrator about a data bug as quickly as possible after that bug is introduced, leading to at least three benefits: (1) The bug is discovered quickly and can be fixed before it is likely to cause a problem. (2) The bug is discovered while the relevant change is fresh in the user's or administrator's mind, increasing the chance that the underlying cause of the bug, as opposed to only the discovered side-effect, is fixed. (3) When poor documentation or company policies contribute to bugs, discovering the bug quickly is likely to identify these contributing factors, facilitating updating documentation and policies to prevent similar bugs in the future. We describe the problem space and potential benefits of continuous data testing, our vision for the technique, challenges we encountered, and our prototype implementation for PostgreSQL. The prototype's low overhead shows promise that continuous data testing can address the important problem of data debugging.
Shortcircuit analysisshipboard electrical power system (2004)

This chapter contains sections titled: General Short-circuit calculation??-??modeling of components in electric power generation and distribution Short circuit current calculation (refer to US Navy Design Data Sheet 300-2 for details) IEEE Std 45-2002, 5.9.2, AC system (fault current) Typical short-circuit calculation examples Simplified wave forms (Figure 8-7 through Figure 8-12) Generator/breaker coordination Short circuit calculation related decremental factors K1 and K2 values (Table 8-1 )
High-field magnetic properties of the magnetic molecule{Cr10Cu2} (2009)

We present detailed magnetic measurements and the theoretical analysis of the recently synthesized magnetic molecule ${{\text{Cr}}_{10}{\text{Cu}}_{2}}$. Due to the heterometallic nature of this molecule, there are three distinct intramolecular interactions, which we describe using an isotropic Heisenberg model with three distinct exchange constants. The magnetic properties of the model are calculated using the quantum Monte Carlo method, including the low-field magnetic susceptibility $\ensuremath{\chi}(T)$ and the magnetization $M(H,T)$ versus magnetic field $H$ up to the saturation field $(\ensuremath{\approx}80\text{ }\text{T})$ for arbitrary temperature $T$. Of particular relevance to experiment, we have calculated the full set of ground-state level-crossing fields corresponding to peaks in $\ensuremath{\partial}M/\ensuremath{\partial}H$ versus $H$ for low $T$. A detailed search of the three-dimensional parameter space yields two well-separated sets of exchange constants, both of which give good agreement between the predictions of the model and the measured $\ensuremath{\chi}(T)$. The present low-temperature tunnel-diode resonator measurements provide values of ground-state level-crossing fields, as well as the level-crossing fields for certain low-lying excited states up to 16 T that are in good agreement with theory. The full set of theoretical crossing fields is very nearly equal for both sets of exchange constants. The theory also provides quantitative predictions for the site-dependent local magnetic moments of this molecule, which could perhaps be tested by future nuclear-magnetic-resonance measurements.
Stability of ascorbic acid in aqueous and aqueous-organic solutions for quantitative determination (2007)

The stability of ascorbic acid is studied in dependence on the pH of its aqueous solution. It is shown that itenhances in acidic and weakly alkaline media and upon the addition of acetonitrile. The stabilizing effect of ethanol is considerably lower. Processes occurring in aqueous and aqueous-organic solutions of ascorbic acid are considered and the results obtained are explained. These data are important for the development of analytical procedures and can be used in the chemical and pharmaceutical industries for improving the stability of preparations containing ascorbic acid.
Furosemide Administered before Noise Exposure can Protect the Ear (2010)

It appears that reversible hearing threshold elevation as a result of furosemide administration before noise exposure can reduce the TTS and PTS. This finding provides insight into the mechanism of noise-induced hearing loss.
Whole-body task planning for a humanoid robot: a way to integrate collision avoidance (2009)

This paper deals with motion planning for a humanoid robot under task constraints. It presents a novel random method, inspired by the RRT-connect algorithm, that uses a local task solver to generate statically stable collision-free configurations. It is able to plan motions for a large variety of tasks. In an experimental section, we compare in details this random strategy with a local collision avoidance method found in the literature.
Effect of an electric field on oxygen ordering and superconducting temperature ofYBa2Cu3O6+xthin films (1996)

The effect of an external electric field on the superconducting temperature ${\mathit{T}}_{\mathit{c}}$ of ${\mathrm{YBa}}_{2}$${\mathrm{Cu}}_{3}$${\mathrm{O}}_{6+\mathit{x}}$ thin films is studied by the cluster-variation method. We present a model in which the field effect on ${\mathit{T}}_{\mathit{c}}$ is related to the oxygen ordering. Electric dipole moments of oxygen occur due to charge transfer from the O-Cu-O chains in the ${\mathrm{CuO}}_{\mathit{x}}$ layers to the ${\mathrm{CuO}}_{2}$ layers. The polarization in the external field is assumed to depend on the length of these chains. A notable enhancement of ${\mathit{T}}_{\mathrm{c}}$ is found at the border between the tetragonal (semiconducting) and orthorhombic (metallic) phases (0.3\ensuremath{\lesssim}x\ensuremath{\lesssim}0.4). It is also demonstrated that moderate external fields do not increase the length of the chains and do not affect ${\mathit{T}}_{\mathit{c}}$ at high values of the oxygen concentration x. \textcopyright{} 1996 The American Physical Society.
A new digital image correlation algorithm for whole-field displacement measurement (2003)

We have developed a new digital image correlation (DIC) algorithm for non-contact, two-dimensional, whole-field displacement and strain measurement. Relative to existing algorithms, our algorithm substantially reduces the calculation expense by using neighborhood information while processing the data to determine the displacement field in a sub-region of interest. The new algorithm also uses higher-order interpolations of the displacement field, allowing for better accuracy in estimating strain distributions when the deformation field is non-homogeneous. Numerically-generated digital images are used to show that the new algorithm accurately reproduces the imposed displacement fields. The algorithm is also tested on actual images from deformed specimens from a variety of experiments, and shown to perform satisfactorily.
Modeling Vehicle Suspension Structural Compliance at Ford Motor Company Using a Coupling of ADAMS™ and MSC/NASTRAN™ (1994)

&lt;div class="htmlview paragraph"&gt;The Core Development Technology group at the Ford Motor Company is actively involved in correlating analytical (ADAMS) vehicle models with objective (telemetric) data from instrumented vehicles. In the past, vehicle compliances were introduced into the ADAMS model by using the ADAMS elements; TIREs, nonlinear BUSHINGs and BEAMs. With the advent of ADAMS/FEA™ [&lt;span class="xref"&gt;1&lt;/span&gt;], a data translator which provides a two-way interface between ADAMS and MSC/NASTRAN, vehicle models may now include the effects of geometrically complex component stiffness and total body compliance in the ADAMS full vehicle simulation. This paper examines the effects of these added compliances on an ADAMS vehicle model by comparing the dynamic toe and camber angles of a vehicle with rigid upper and lower control arms to a vehicle with flexible upper and lower control arms built from MSC/NASTRAN data. The results demonstrate that complex problems can be very efficiently modeled and simulated by combining finite element analysis (MSC/NASTRAN [&lt;span class="xref"&gt;2&lt;/span&gt;]) and mechanical system simulation (ADAMS [&lt;span class="xref"&gt;3&lt;/span&gt;]) technologies.&lt;/div&gt;
ChemInform Abstract: On the Existence of Transition‐Metal Fullerides: Deposition and Characterization of TixC60. (1998)

Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Modulation of the ability of clozapine to facilitate NMDA‐ and electrically evoked responses in pyramidal cells of the rat medial prefrontal cortex by dopamine: pharmacological evidence (2003)

Previous studies have shown that dopamine (DA) may play an important role in mediating or modulating the facilitating action of clozapine in glutamatergic transmission. This possibility was tested further in the present study by pharmacological manipulation of the DA system. When rats were pretreated with reserpine (which blocks storage of biogenic amines) and alpha-methyl para-tyrosine (AMPT, which inhibits tyrosine hydroxylase, the rate-limiting enzyme for the DA synthesis), the ability of clozapine to augment glutamatergic transmission in pyramidal cells of the medial prefrontal cortex (mPFC) was totally abolished. Furthermore, the application of l-dihydroxyphenylalanine (L-DOPA, the immediate precursor of DA which bypasses the synthesis step inhibited by AMPT) reversed the effect produced by reserpine plus AMPT and reinstated the facilitating action of clozapine, whereas administration of 5-hydroxytryptophan (5-HTP), the immediate precursor of 5-HT, was ineffective. In addition, DA D1 receptor antagonist SCH 23390 also completely prevented clozapine-induced facilitating action in the mPFC pyramidal cells. The present results demonstrate that newly synthesized DA and DA D1 receptors are required for clozapine to elicit its facilitating action on glutamatergic neurotransmission in the mPFC.
Phase Change of Nanorod-Clustered MnO2by Hydrothermal Reaction Conditions and the Lithium-ion Battery Cathode Properties of LiMn2O4Prepared from the MnO2 (2011)

<TEX>$MnSO_45H_2O$</TEX>와 <TEX>$(NH_4)S_2O_8$</TEX>의 수열반응으로 1차원 나노로드들이 침상으로 클러스터화된 구조의 <TEX>$MnO_2$</TEX>를 제조하고 그 모폴로지와 결정성을 분석하였다. 수열반응의 조건에 따라 <TEX>${\alpha}$</TEX>-, <TEX>${\beta}$</TEX>-, <TEX>${\gamma}-MnO_2$</TEX> 등의 전구체가 제조될 수 있는데, 고농도 반응물 및 높은 수열합성 온도(<TEX>$150^{\circ}C$</TEX>)에서 전기화학적 활성이 우수한 나노로드 클러스터 <TEX>${\beta}-MnO_2$</TEX>의 생성을 확인하였다. 또한 리튬화제 <TEX>$LiC_3H_3O_2{\cdot}2H_2O$</TEX>의 농도와 열처리 온도를 변화시키면서 <TEX>$MnO_2$</TEX>를 리튬화하여 스피넬계 <TEX>$LiMn_2O_4$</TEX>를 제조하고 리튬이온전지 양전극으로서의 특성을 조사하였다. 결과적으로 나노로드 클러스터형 <TEX>${\beta}-MnO_2$</TEX>로부터 고농도 리튬화제와 <TEX>$800^{\circ}C$</TEX> 열처리를 통해 제조한 <TEX>$LiMn_2O_4$</TEX>가 정방형 스피넬에 가장 가까운 구조임을 확인하였으며, 120 mAh/g의 우수한 초기 방전용량을 나타내었다. Nanorod-clustered <TEX>$MnO_2$</TEX> precursors with <TEX>${\alpha}$</TEX>-, <TEX>${\beta}$</TEX>-, and <TEX>${\gamma}$</TEX>-phases are synthesized by hydrothermal reaction of <TEX>$MnSO_45H_2O$</TEX> and <TEX>$(NH_4)S_2O_8$</TEX>. The formation of nanorod-clustered <TEX>${\beta}-MnO_2$</TEX> is particularly confirmed under the conditions of high reactant concentration and hydrothermal reaction at <TEX>$150^{\circ}C$</TEX>. The spinel <TEX>$LiMn_2O_4$</TEX> nanorod-clusters are also prepared by lithiating the <TEX>$MnO_2$</TEX> precursors, varying the concentration of lithiating agent (<TEX>$LiC_3H_3O_2{\cdot}2H_2O$</TEX>) and heat treatment temperature, and characterized for use as cathode material of lithium-ion batteries. As a result, the nanorod-clustered <TEX>$LiMn_2O_4$</TEX> prepared from the <TEX>${\beta}-MnO_2$</TEX> at higher <TEX>$LiC_3H_3O_2{\cdot}2H_2O$</TEX> concentration and the annealing at <TEX>$800^{\circ}C$</TEX> is proven to show the cubic spinel structure and to achieve the high initial discharge capacity of 120 mAh/g.
HTS Josephson plasma oscillator (2000)

Recent observations on novel electromagnetic emissions from the microwave to THz range due to tunnel injection of quasiparticles into the c -axis direction of high-Tc superconductors are briefly reviewed. The results for YBa2 Cu3 O7-y , ErBa2 Cu3 O7-y and Bi2 Sr2 CaCu2 Oy (BSCCO) thin-film tunnel samples and BSCCO single crystals are reported. The observed emission phenomena are qualitatively different between the high-voltage injection regime (V >> /e , where is the gap or gap-sum parameter) and the low-voltage injection regime (V /e ). For V >> /e , to which regime most thin-film samples might belong, the nonequilibrium broadband emissions extending to the THz range due to the incoherent plasmon scattering are observable. For V /e , as realized in the case of a BSCCO crystal, in addition to the broadband emissions, a sharp microwave emission peak corresponding to the coherent Josephson plasma peak is observable.