gebhart/patrepeval huggingface dataset:
Bi2O3and BiOCl electrospun nanosheets and morphology-dependent photocatalytic properties (2014)

BiOCl and Bi2O3 nanosheet like structures were produced by electrospinning. The morphological changes were observed by changing precursor (BiOCl3 and Bi(NO3)3·5H2O) concentrations. These nanosheets were analyzed by XRD, which reveals that the crystal structures of BiOCl and Bi2O3 belonged to tetragonal and beta-phase systems respectively. Both nanostructures were employed for the photodegradation of Alizarin Red S (ARS) dye under UV light (<390 nm) irradiation. BiOCl nanosheet like structures exhibited superior photocatalytic activity (PCA) for the degradation of ARS dye and their half-life was estimated from the kinetic plots of PCA. A plausible reaction mechanism is proposed for the PCA and discussed in detail.
A Study on the Process and Performance of Shared Value Creation based on Collaborative Consumption in Fashion Streaming Service (2023)

본 연구는 패션 스트리밍 서비스 특성(서비스 자원, 서비스 능력)과 공유가치창출 과정(사회적 가치일치, 정보가치공유, 협력소비 가치) 및 성과(지속적 활용의도) 간의 영향관계를 구조적으로 파악하였다. 이를 위해 패션 스트리밍 서비스 플랫폼을 활용하여 해당 서비스의 정기 이용권을 구매하고 패션 상품이용(렌탈, 구독, 공유, 큐레이션)을 진행한 경험자를 500명을 표본으로 선정하여 자료를 수집하였다. 측정 자료를 SPSS, AMOS 통계 툴을 이용하여 빈도분석, 신뢰도/타당도 검증, 측정모형분석, 그리고 변수 간의 영향 검증을 위한 경로분석을 수행하였다. 이상으로 나타난 경로분석 결과는 다음과 같다. 첫째, 패션 스트리밍 서비스 자원속성의 상품자원, 서비스자원, 관계자원은 사회적 가치일치에 모두 유의한 영향을 미쳤다. 그리고 관계자원 만이 정보가치공유에 유의한 영향을 미쳤다. 둘째, 패션 스트리밍 서비스 능력속성의 자원보유능력, 자원유지능력, 자원활용능력은 사회적 가치일치에 모두 유의한 영향을 미쳤다. 그리고 자원유지능력, 자원활용능력이 정보가치공유에 유의한 영향을 미쳤다. 셋째, 패션 스트리밍 서비스에서의 공유가치창출 과정 요인들과 성과간의 관계에서 사회적 가치일치는 정보가치공유 및 협력소비 참여가치에, 정보가치공유는 협력소비 참여가치에, 그리고 협력소비 참여가치는 지속적 활용의도에 유의한 영향을 미쳤다.
Ultra-pure digital sideband separation at sub-millimeter wavelengths (2015)

Context. Deep spectral-line surveys in the mm and sub-mm range can detect thousands of lines per band uncovering the rich chemistry of molecular clouds, star forming regions and circumstellar envelopes, among others objects. The ability to study the faintest features of spectroscopic observation is, nevertheless, limited by a number of factors. The most important are the source complexity (line density), limited spectral resolution and insufficient sideband (image) rejection (SRR). Dual sideband (2SB) millimeter receivers separate upper and lower sideband rejecting the unwanted image by about 15 dB, but they are difficult to build and, until now, only feasible up to about 500 GHz (equivalent to ALMA Band 8). For example ALMA Bands 9 (602–720 GHz) and 10 (787–950 GHz) are currently double sideband (DSB) receivers.
A novel device for the calibration of sonic and ultrasonic recording transducers (2020)

Recently, there has been an increase in the analysis of animal vocalizations in behavioral neuroscience as a social cue or indicator of neurological integrity. Despite the multitude of researchers examining vocalizations in a variety of species, no inexpensive, tunable devices currently exist to calibrate the amplification applied to such vocalizations before data are collected. Many commercially available recording systems have analogue adjustments for gain, but such methods are notoriously unreliable and highly variable. Without a consistent level of gain, the amplitudes of recorded acoustic signals cannot be reliably compared. Here, we describe an apparatus designed to fulfill this need, which we have labeled the Calibration Unit for Recording Transducers (CURT). To maximize application to various fields, its emitted frequency and amplitude are tunable to output frequencies in both human-sonic (20 Hz – 20 kHz) and human-ultrasonic ranges (20–100 kHz). Additionally, it is a portable (weighing approximately 180 g), customizable, stand-alone unit, and fits a variety of microphone connector types. The CURT is also relatively low cost to build (under 250.00 USD), thereby making such a device available to as many researchers as possible in animal behavior and neuroscience.
Boron nitride nanosheet coatings with controllable water repellency (2011)

The growth, structure, and properties of two-dimensional boron nitride (BN) nanostructures synthesized by a thermal chemical vapor deposition method have been systematically investigated. Most of the BN nanosheets (BNNSs) were less than 5 nm in thickness, and their purity was confirmed by X-ray energy dispersive spectroscopy, X-ray photoelectron spectroscopy, electron energy loss spectroscopy, and Raman spectroscopy. The effects of the process variables on the morphology and roughness of the coatings were studied using atomic force microscopy and scanning electron microscopy. A smooth BN coating was obtained at 900 °C, while compact BNNS coatings composed of partially vertically aligned nanosheets could be achieved at 1000 °C and higher temperatures. These nanosheets were mostly separated and exhibited high surface area especially at higher synthesis temperatures. The nonwetting properties of the BNNS coatings were independent of the water pH and were examined by contact angle goniometry. The present results enable a convenient growth of pure BNNS coatings with controllable levels of water repellency, ranging from partial hydrophilicity to superhydrophobicity with contact angles exceeding 150°.
A broadly applicable continuous spectrophotometric assay for measuring aminoacyl-tRNA synthetase activity (1995)

We describe a convenient, simple and novel continuous spectrophotometric method for the determination of aminoacyl-tRNA synthetase activity. The assay relies upon the measurement of inorganic pyrophosphate generated in the first step of the aminoacylation of a tRNA. Pyrophosphate release is coupled to inorganic pyrophosphatase, to generate phosphate, which in turn is used as the substrate of purine nucleoside phosphorylase to catalyze the N-glycosidic cleavage of 2-amino 6-mercapto 7-methylpurine ribonucleoside. Of the reaction products, ribose 1-phosphate and 2-amino 6-mercapto 7-methylpurine, the latter has a high absorbance at 360 nm relative to the nucleoside and hence provides a spectrophotometric signal that can be continuously followed. The non-destructive nature of the spectrophotometric assay allowed the re-use of the tRNAs in question in successive experiments. The usefulness of this method was demonstrated for glutaminyl-tRNA synthetase (GlnRS) and tryptophanyl-tRNA synthetase. Initial velocities measured using this assay correlate closely with those assayed by quantitation of [3H]Gln-tRNA or [14C]Trp-tRNA formation respectively. In both cases amino acid transfer from the aminoacyl adenylate to the tRNA represents the rate determining step. In addition, aminoacyl adenylate formation by aspartyl-tRNA synthetase was followed and provided a more sensitive means of active site titration than existing techniques. Finally, this novel method was used to provide direct evidence for the cooperativity of tRNA and ATP binding to GlnRS.
ChemInform Abstract: Fluoroapatite/Sodium Nitrate as a Solid Support for the Knoevenagel Reaction. (2001)

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.
Using Ballistocardiography to Evaluate Cardiac Performance in Trained Male Ice Hockey Players (2011)

A Thesis Submitted to the Faculty of Graduate Studies and Research In Partial Fulfillment of the Requirements for the Degree of Master of Science in Kinesiology & Health Studies, University of Regina. xiii, 104 p.
ON THE ANTI‐INFLAMMATORY ACTIVITY OF SOME SUBSTITUTED PHENOLIC COMPOUNDS (1964)

Some substituted dihydroxybenzenes have been examined for suppression of the yeast-induced inflammatory reaction in the rat paw. This anti-inflammatory activity is greatest in those compounds derived from resorcinol and in particular the halogenated 5-methylresorcinols. The significance of the internuclear distance between the hydroxyl groups in the meta-position to each other in resorcinol and the importance of the enhanced activity due to the halogen atom(s) is discussed. In this series the toxicity and activity could not be divorced.
Admission Body Temperature Predicts Long-Term Mortality After Acute Stroke (2002)

Low body temperature on admission is considered to be an independent predictor of good short-term outcome. The present study suggests that admission body temperature seems to be a major determinant even for long-term mortality after stroke. Hypothermic therapy in the early stage in which body temperature is kept low for a longer period after ictus could be a long-lasting neuroprotective measure.
Adaptive Gaussian Search : A Novel Non-linear Minimization Technique [Presidential Award Proceedings] (2023)

A novel minimization technique was developed. The proposed method is based on a Gaussian random search in the parameter space and it can handle a wide range of problems, including bi-exponential curve fitting, in a reasonable time. It uses only function values, and does not require gradients.
A novel signature for stratifying the molecular heterogeneity of the tissue-infiltrating T-cell receptor repertoire reflects gastric cancer prognosis (2017)

Many basic properties of the T-cell receptor (TCR) repertoire require clarification, and the changes occurring in the TCR repertoire during carcinogenesis, especially during precancerous stages, remain unclear. This study used deep sequencing analyses to examine 41 gastric tissue samples at different pathological stages, including low-grade intraepithelial neoplasia, high-grade intraepithelial neoplasia, early gastric cancer and matched adjacent tissues, to define the characteristics of the infiltrating TCRβ repertoire during gastric carcinogenesis. Moreover, to illustrate the relationship between the local molecular phenotype and TCR repertoire of the microenvironment, whole-genome gene expression microarray analysis of the corresponding gastric precancerous lesions and early gastric cancer tissues was conducted. Our results showed that the degree of variation in the TCR repertoire gradually increased during tumourigenesis. Integrative analysis of microarray data and the TCR repertoire variation index using the network-based Clique Percolation Method identified an 11-gene module related to the inflammatory response that can predict the overall survival of gastric cancer (GC) patients. In conclusion, our results revealed the multistage heterogeneity of tissue-infiltrating TCR repertoire during carcinogenesis. We report a novel way for identifying prognostic biomarkers for GC patients and improves our understanding of immune responses during gastric carcinogenesis.
Hydrostatic pressure-generated reactive oxygen species induce osteoarthritic conditions in cartilage pellet cultures (2018)

Osteoarthritis (OA) is one of the most common causes of disability and represents a major socio-economic burden. Despite intensive research, the molecular mechanisms responsible for the initiation and progression of OA remain inconclusive. In recent years experimental findings revealed elevated levels of reactive oxygen species (ROS) as a major factor contributing to the onset and progression of OA. Hence, we designed a hydrostatic pressure bioreactor system that is capable of stimulating cartilage cell cultures with elevated ROS levels. Increased ROS levels in the media did not only lead to an inhibition of glycosaminoglycans and collagen II formation but also to a reduction of already formed glycosaminoglycans and collagen II in chondrogenic mesenchymal stem cell pellet cultures. These effects were associated with the elevated activity of matrix metalloproteinases as well as the increased expression of several inflammatory cytokines. ROS activated different signaling pathways including PI3K/Akt and MAPK/ERK which are known to be involved in OA initiation and progression. Utilizing the presented bioreactor system, an OA in vitro model based on the generation of ROS was developed that enables the further investigation of ROS effects on cartilage degradation but can also be used as a versatile tool for anti-oxidative drug testing.
Multi-spectral photoplethysmography biosensor (2011)

A photoplethysmography (PPG) signal can provide very useful information about a subject's hemodynamic status in a hospital or home environment. A newly developed portable multi-spectral photoplethysmography device has been used for studies of 11 healthy subjects. The developed optical fiber biosensor comprises one multi-wavelength laser diode (405nm, 660nm and 780nm) and a single photodiode with multi-channel signal output processing and built in Li-ion accumulator; special software was created for visualization and measuring of the MS-PPG signals. ARM7TDMI-S LPC2148, NXP (founded by Philips) 32 bit processor with clock frequency of 60 MHz performs measurement and analysis of the signal.
Dinucleoside polyphosphates: strong endogenous agonists of the purinergic system (2009)

The purinergic system is composed of mononucleosides, mononucleoside polyphosphates and dinucleoside polyphosphates as agonists, as well as the respective purinergic receptors. Interest in the role of the purinergic system in cardiovascular physiology and pathophysiology is on the rise. This review focuses on the overall impact of dinucleoside polyphosphates in the purinergic system. Platelets, adrenal glands, endothelial cells, cardiomyocytes and tubular cells release dinucleoside polyphosphates. Plasma concentrations of dinucleoside polyphosphates are sufficient to cause direct vasoregulatory effects and to induce proliferative effects on vascular smooth muscle cells and mesangial cells. In addition, increased plasma concentrations of a dinucleoside polyphosphate were recently demonstrated in juvenile hypertensive patients. In conclusion, the current literature accentuates the strong physiological and pathophysiological impact of dinucleoside polyphosphates on the cardiovascular system.
Origine et devenir des gaz dissous dans le fromage (2020)

La dissolution des gaz atmosphériques (oxygène, dioxyde de carbone) dans les fromages sont responsables des modifications physiques et biochimiques (par exemple, évolution de texture ou de couleur) (...)
Oligonucleotide Analogues with Integrated Bases and Backbone. Part 28 (2011)

Abstract The protected hydrazide‐linked uracil‐ and adenine‐derived tetranucleoside analogues 17, 19 , and 21 were synthesized in solution by coupling the dimeric hydrazines 6 and 10 with the carboxylic acids 7, 11 , and 16 . These hydrazines and acids were obtained by partially deprotecting the hydrazines 5, 9 , and 15 , and these were prepared by coupling the hydrazines 3 and 14 with the carboxylic acids 4 and 8 . The crystal structure analysis of the fully protected UU dimer 5 showed the formation of an antiparallel cyclic duplex with the uracil units H‐bonded via HN(3) and OC(2). Stacking interactions were observed between the uracil units with a buckle twist of 30.9°, and between the uracil unit II and the fluoren‐9‐yl group of Fmoc (=9 H ‐fluoren‐9‐yl)methoxycarbonyl). The hydrazide HN(3′) and the CO group of Fmoc form an intramolecular H‐bond. The uracil‐ and adenine‐derived, water‐soluble hydrazide‐linked self‐complementary octamers 23 – 32 and the non‐self‐complementary uracil derived decamer 33 were obtained by coupling the carboxylic acids 4 and 8 on a solid support. 1 H‐NMR Analysis in CDCl 3 , mixtures of CDCl 3 and (D 6 )DMSO, and (D 8 )THF showed that the partially deprotected dimers 5, 6, 12 , and 13 form weakly associated linear duplexes. The partially deprotected tetramers 17 and 18 do not associate. The hydrazide‐linked octamers 23 – 32 do not stack in aqueous solution, and the non‐self‐complementary decamer 33 does not stack with the complementary strands of DNA 43 and RNA 42 . The Cbz‐protected amide‐linked octamers 51 – 56 derived from uracil, adenine, cytosine, and guanine were obtained as the main products by solid‐phase synthesis from the carboxylic acids 46 – 49 . The fully deprotected amide‐linked octamers proved insoluble, and could neither be purified nor analysed.
Soluble invasion plasmid antigen C (IpaC) from Shigella flexneri elicits epithelial cell responses related to pathogen invasion (1996)

Shigella flexneri invades colonic epithelial cells by pathogen-induced phagocytosis. The three proposed effectors of S. flexneri internalization are invasion plasmid antigens B (IpaB), IpaC, and IpaD, which are encoded on the pathogen's 230-kb virulence plasmid and translocated to the extracellular milieu via the Mxi-Spa translocon. To date, there are no definitive functional data for any purified Ipa protein. Here, we describe the first characterization of highly purified recombinant IpaC, which elicits numerous epithelial cell responses related to events that take place during pathogen invasion. 125I-labeled IpaC binds cultured Henle 407 intestinal cells with an apparent dissociation constant in the low micromolar range. Moreover, incubation of epithelial cells with IpaC results in general changes in cellular phosphoprotein content, demonstrating this protein's ability to influence cellular protein kinase activities. These results contrast dramatically with those seen for recombinant IpaD, which does not bind to or induce detectable changes in the normal activities of cultured epithelial cells. In addition to influencing host cell activities, preincubation of epithelial cells with purified IpaC enhances uptake of S. flexneri by host cells. A similar result is seen when the cells are preincubated with a highly concentrated water extract of virulent S. flexneri 2a (strain 2457T). Interestingly, soluble IpaC also appears to promote uptake of the noninvasive S. flexneri 2a strain BS103. Purified IpaD failed to enhance the uptake of virulent S. flexneri and did not facilitate uptake of BS103. Taken together, the data suggest that IpaC is a potential effector of the host cell biological activities and may be responsible for entry of S. flexneri into target cells.
Palladium-Catalyzed Carbonylative Coupling of Arylfluorosilanes with Aryl Iodides. A Convenient Synthesis of Diaryl Ketones (1989)

Abstract In the presence of 1 atm of carbon monoxide, arylfluorosilanes activated by potassium fluoride were found to participate in the Pd-catalyzed carbonylative coupling reaction of aryl iodides to give unsymmetrical diaryl ketones in good yields.
Enhancement of wear and erosion-corrosion resistance of Inconel 718 alloy by liquid nitriding (2020)

Abstract Inconel 718 alloy is often used for the oil and gas industry, which usually failed due to the erosion-corrosion of multi-phase flow. In this study, we expect to enhance the wear and erosion-corrosion resistance of Inconel 718 alloy by liquid nitriding and a high-hardness nitrided layer with the thickness of about 9.5 μ m on the surface of Inconel 718 alloy was formed by liquid nitriding. Wear and erosion-corrosion tests were performed on untreated and nitrided Inconel 718 alloys. Results show that abrasive wear and adhesive wear occurred in both nitrided and untreated samples at different temperatures (25 °C, 100 °C and 200 °C). The width and depth of the wear track and the wear rate of the nitrided samples are all smaller than that of the untreated samples. Liquid nitriding significantly improves the wear resistance of Inconel 718 alloy because of the high-hardness nitrided layer. The nitrided Inconel 718 alloy exhibited an improvement of almost 80.3% in the erosion-corrosion resistance compared to their untreated counterparts. The weight loss rate of the erosion-only shows an obvious reduction after liquid nitriding. The surface nitrided layer with high hardness effectively protects the substrate, and prevents the material from the erosion-corrosion of multi-phase flow consisting of the SiO 2 particles and the acidic solution, so that the total weight loss of nitrided Inconel 718 alloy decreased evidently.
Ru-Catalyzed Regioselective Cascade Annulation of Acrylamides with 2-Alkynoates for the Synthesis of Various 6-Oxo Nicotinic Acid Esters (2019)

Ru-catalyzed regioselective cascade annulation of acrylamides with 2-alkynoates via aza-Michael/C-H activation sequence for the synthesis of various 6-oxo nicotinic acid esters is described. The regioselectivity of the protocol has been confirmed by performing silver mediated protodecarboxylation of the corresponding 6-oxo nicotinic acid to furnish 2-pyridone. The developed protocol is copper or silver salt-free and uses inexpensive, safe, and environmentally benign peroxide-based "oxone" as the sole oxidant. A redox-neutral version of the protocol is also demonstrated.
Theory and experiment of large numerical aperture objective Raman microscopy: application to the stress‐tensor determination in strained cubic materials (2008)

Abstract We present the theory underlying the large numerical aperture objective micro‐Raman backscattering experiment and apply it to the elaboration of a characterization methodology for the determination of the stress tensor in strained cubic semiconductor structures. The presented stress characterization technique consists in monitoring the variations of the stress‐sensitive optical phonon peak position and linewidth while rotating stepwise the sample about its normal. The practical application of the technique is illustrated on a silicon‐on‐insulator (SOI) microelectronic structure demonstrating a plane stress‐tensor determination. Copyright © 2008 John Wiley &amp; Sons, Ltd.
Development of a Standardized Set of Patient-centered Outcomes for Advanced Prostate Cancer: An International Effort for a Unified Approach (2015)

Our international group has recommended a standardized set of patient-centered outcomes to be followed during routine care for all men with advanced prostate cancer.
Polymerase chain reaction–based tests for pan‐species and species‐specific detection of human Plasmodium parasites (2012)

We have developed PCR tests with the highest reported sensitivity to date for pan-Plasmodium diagnosis and species-specific diagnosis and detected blood film-negative asymptomatic infections in individuals living in malaria-endemic countries.
Clonal growth of lymphoid cells in serum‐free media requires elimination of H2O2 toxicity (1983)

Abstract We have recently described the development of a serum‐free medium that contains casein, insulin, testosterone, transferrin, and linoleic acid and that supports the long‐term growth of a wide variety of lymphoid cells. A problem of culturing cells in this medium is the difficulty of cloning cells or growing cells at low density. We now describe the formulation of a chemically defined medium that supports the clonal growth of the murine S49 T lymphoma cell line. This medium contains catalase, insulin, transferrin, testosterone, Na 2 SeO 3 , and dilinoleoyl phosphatidylcholine and contains less than 50 μg/ml total protein. The two novel additions in this medium are catalase, which replaces casein and dilinoleoyl phosphatidylcholine, which substitutes for linoleic acid in this defined medium. In addition to S49 cells, the medium described above supports the long‐term growth of other lymphoid cells, including human and murine hybridomas. We propose that catalase functions to degrade H 2 O 2 that is present in the cultures and that casein, bovine serum albumin, and other proteins commonly included in media for cultured cells may also scavenge H 2 O 2 . Na 2 SeO 3 also partially protects against the death of cells at clonal density and this protection may, like catalase, be due to removal of H 2 O 2 . Our results suggest that H 2 O 2 is an important cytotoxic agent that prevents growth of lymphoid cells during culture in serum‐free media and perhaps in serum‐containing media as well.