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On the Space bv_p(F) of Sequences of p-bounded Variation of Fuzzy Numbers

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Acta Mathematica Sinica,English Series 2008年第7期24卷 1205-1212页

作者： zer TALO Feyzi BA■ar Fatih niversitesi Fen-Edebiyat FakltesiMatematik BlmBykekmece Kamps 34500-stanbulTrkiye

Recently, the space bvp of real or complex numbers consisting of all sequences whose differences are in the space lp has been studied by Basar, Altay [Ukrainian Math. j. 55（1）（2003）, 136-147], where 1 ≤ p ≤ ∞. The main purpose of the present paper is to introduce the space bvp（F） of sequences of p-bounded variation of fuzzy numbers. Moreover, it is proved that the space bvp（F） includes the space lp（F） and also shown that the spaces bvp（F） and lp（F） axe isomorphic for 1 ≤ p ≤∞. Furthermore, some inclusion relations have been given.

关键词： sequence of fuzzy numbers space of difference sequences isomorphic spaces and inclusion relations

A Crystallization Study of Nanocrystalline PZT 53/47 Granular arrays Using a Sol-Gel Based Precursor

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journal of Materials Science & Technology 2011年第6期27卷 489-496页

作者： A.Surez-Gómez j.M.Saniger-Blesa F.Calderón-Pinar CCADET-Universidad Nacional Autónoma de México Cd.UniversitariaCirc.Exterior s/nA.P.70-186Coyoacn 04510México D.F.México Laboratorio de Ingeniería Electroquímica Facultad de QuímicaUniversidad Nacional Autónoma de MéxicoCd.UniversitariaCoyoacn 04510México D.F.México Facultad de Física/IMRE San Lzaro y LUniversidad de la Habana

In this work,we intend to perform a detailed study on the crystallization process of PZT 53/47 nanostructured powders by starting out with an amorphous precursor synthesized by a sol-gel based *** interests also lie in the feasibility for controlling the average grain size of the final structure in the submicron range on an ab initio ***,Fourier transform infrared spectroscopy（FT-IR）,Raman（Stokes and Anti-Stokes）,X-ray diffraction（XRD） and scanning electron microscopy（SEM） are used to examine the microstructural characteristics based on previously reported differential thermal analysis/thermal gravimetric analysis（DTA/TGA） *** results show a crystallization temperature of 800℃ to attain pure perovskite phase with excellent morphological quality,average grain size 〈DG〉〈 300 nm and with average crystallite size 〈DC〉〈15 nm.

关键词： Powders-chemical preparation PZT synthesis Sol-gel precursors Microstructure- final Vibrational spectroscopies X-ray diffraction

Microstructure and Property Relationships in Resistance Spot Weld between 7114 Interstitial Free Steel and 304 Austenitic Stainless Steel

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journal of Materials Science & Technology 2006年第3期22卷 375-381页

作者： Ahmet Hasanba■o■lu Ramazan Kaar Department of Metal Education Karabük Technical Education Faculty Karabük 78100 Turkey

Due to the differences in physical, chemical and mechanical properties of the base metals, the resistance spot welding of dissimilar materials is generally more challenging than that of similar materials. The influence of the primary welding parameters affecting the heat input such as peak current on the morphology, microhardness, and tensile shear load bearing capacity of dissimilar welds between 304 grades austenitic and 7114 grade interstitial free steel has been investigated in this study. The optimum welding parameters producing maximum joint strength were established at a peak current of 9 kA, where the electrode force is kept 6×10^-5 Pa and weld time is kept constant 17 cycles, respectively. The primary cause of weakening the weldment is identified as the excessive grain growing region of heat affected zone （HAZ） in case of 7114 grade interstitial free steel.

关键词： Resistance spot weld Interstitial free steel Austenitic stainless steel

Does shifting to professional emergency department staffing affect the decision for chest radiography?

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World journal of Emergency Medicine 2021年第2期12卷 87-92页

作者： Marin Pavlov Lucija Klobucar Iva Klobučar Kristinazgela Vesna Degoricija Department of Cardiology Sestre Milosrdnice University Hospital CentreZagreb 10000Croatia Institute of Emergency Medicine Osijek-Baranja CountyOsijek 31000Croatia University of Zagreb School of Medicine Zagreb 10000Croatia Department of Medicine Sestre milosrdnice University Hospital CentreZagreb 10000Croatia

BACKGROUND: The study aims to determine whether shifting to professional emergency department(ED) teams leads to a higher rate of radiologic ***: We retrospectively analyzed a total of 2,000 patients presenting to the ED of a tertiary teaching hospital in two time periods: group 1(G1) comprised 1,000 consecutive patients enrolled from December 21, 2012 to january 5, 2013(all patients were examined by an internal medicine specialist);group 2(G2) comprised 1,000 consecutive patients enrolled from December 21, 2018 to january 3, 2019(all patients were examined by an emergency physician).RESULTS: The chest X-ray(CXR) was performed in 40.6% of all patients. There was no difference in the frequency of CXR(38.9% in G1 vs. 42.3% in G2, P=0.152). More CXRs were performed in G2 patients older than 65 years, in female patients older than 65 years, in patients presenting during the evening and night shifts or off-hours, in patients with a history of malignancy, in patients with gastrointestinal bleeding, and in patients with bradycardia, but fewer in patients presenting with arrhythmia. No difference in the rates of pathological CXR was found(47.3% in G1 vs. 52.2% in G2, P=0.186). Compared with G2, higher sensitivity and specificity were obtained for the binary logistic regression model predicting pathological findings in ***: Shifting to professional ED teams does not increase radiologic workup. By implementing deliberate usage of ultrasound, some self-governing procedures, case-oriented investigations, and center-specific recommendations, unnecessary radiologic workup can be avoided. Professional ED teams could lead to a higher standard of emergency care.

关键词： Chest radiography Emergency department Emergency physicians Healthcare organization

Structural and optical properties of periodically ordered ZnO nanowires

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Science China(Technological Sciences) 2009年第2期52卷 313-317页

作者： j.B.CUI Department of Physics and Astronomy, University of arkansas at Little Rock, Little Rock, ar 72204, USA 1. Department of Physics and Astronomy University of Arkansas at Little Rock Little Rock AR 72204 USA

Periodically ordered ZnO nanowire arrays were fabricated by a combination of soft templates created by electron beam lithography and an electrochemical process. Individual ZnO nanowires were precisely placed in desired locations to form two-dimensional periodic structures with specific patterns. Scanning electron microscopy and light diffraction measurements confirmed the long-range ordered structures in the nanowire arrays. Variable temperature photoluminescence revealed both band edge and defect emissions. The obtained photonic structures may have potential applications in optical and optoelectronic devices.

关键词： Zinc oxide nanowires ordered structure optical property

Prevalence of Clostridium spp.,in Kashar cheese and efficiency of Lactiplantibacillus plantarum and Lactococcus lactis *** mix as a biocontrol agents for Clostridium spp.

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Food Bioscience 2022年第2期46卷 695-702页

作者： Fatmanur Demirbas¸ Enes Dertli Muhammet arıcı Department of Food Engineering Faculty of Chemical and Metallurgical EngineeringYıldız Technical University˙IstanbulTurkey

Clostridium sporogenes and Clostridium tepidium strains were detected in traditional Kashar cheese samples with late blowing *** control Clostridium spp.,in Kashar cheese,dairy originated Lactic Acid Bacteria(LAB)strains were tested under in vitro conditions and during Kashar *** strains,Lactiplantibacillus plantarum and Lactococcus lactis *** demonstrated anticlostridial activity in vitro and the co-inoculum of these two strains(107 cfu g^(-1))were tested during the challenge test on Kashar cheese production in which a contamination ratio of 10^(4) cfu g^(-1) with spores of *** were *** samples were stored at 4℃ and 25℃ during 40 days of storage period and microbiological and physicochemical properties of Kashar samples were determined during this period.A decrement of nearly 1 log cfu g^(-1) in *** numbers was observed in Kashar samples produced with co-inoculum of *** and *** *** stored at 4℃ but this was not the case for the Kashar samples stored at 25℃.This study revealed the potential of distinct LAB strains to control *** spores in semi-hard cheese samples as biocontrol agents at 4℃ storage.

关键词： Late blowing Clostridium sporogenes Biocontrol Kashar cheese Lactiplantibacillus plantarum Lactococcus lactis subsp Lactis

Impact of the blockage ratio on the transport of sediment in the presence of a hydrokinetic turbine: Numerical modeling of the interaction sediment and turbine

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International journal of Sediment Research 2021年第6期36卷 696-710页

作者： Fatima Khaled Sylvain Guillou Yann Méar Ferhat Hadri University of Caen Normandy LISV University of Versailles Conservatoire National des arts et Métiers University of Caen Normandy

Interactions between hydrokinetic turbines and near scale and far scale bed sediment particles are considered a critical area of assessment; however, a limited number of research studies have been published to address this issue. The current paper explores the influence of the blockage ratio on the morphology evolution downstream from a hydrokinetic turbine. A modeling framework is derived to predict the significant transport induced by a turbine installed on the erodible fluvial sandy bed surface,such as the Eulerian multi-phase model for the sediment and the Blade Element Momentum Theory(BEMT) for the turbine, using the open source platform OpenFOAM. Two configurations of different blockage ratios are considered. The configurations show differences in the bed morphology and the sediment transport. It has been shown for both configurations that the scour capabilities are enhanced below the turbine due to the acceleration of the flow and increasing local shear stress on the sediment.

关键词： Environmental impact Blockage effects Euler-Euler multiphase Hydrokinetic turbine Numerical simulations OpenFOAM

Epigenetics in psychiatry:Beyond DNA methylation

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World journal of Psychiatry 2023年第6期13卷 319-330页

作者： Katarina Kouter IrisŠalamon arčan Alja VidetičPaska Faculty of Medicine Institute of Microbiology and ImmunologyUniversity of LjubljanaLjubljana 1000Slovenia Faculty of Medicine Institute of Biochemistry and Molecular GeneticsUniversity of LjubljanaLjubljana 1000Slovenia

The global burden of psychopathologies appears to be underestimated,since the global psychiatric disorder burden is exceeding other medical *** be able to address this problem more effectively,we need to better understand the etiology of psychiatric *** of the hallmarks of psychiatric disorders appears to be epigenetic *** some epigenetic modifications(such as DNA methylation)are well known and studied,the roles of others have been investigated much *** hydroxymethylation is a rarely studied epigenetic modification,which as well as being an intermediate stage in the DNA demethylation cycle is also an independent steady cell state involved in neurodevelopment and *** contrast to DNA methylation,DNA hydroxymethylation appears to be related to an increase in gene expression and subsequent protein *** no particular gene or genetic locus can be at this point linked to changes in DNA hydroxymethylation in psychiatric disorders,the epigenetic marks present good potential for biomarker identification because the epigenetic landscape is a result of the interplay between genes and environment,which both influence the development of psychiatric disorders,and because hydoxymethylation changes are particularly enriched in the brain and in synapse-related genes.

关键词： Mood disorders Suicide Schizophrenia Bipolar disorder Hydroxymethylation 5-hydroxymethycytosine Gene expression

Potential of RP-UHPLC-DAD-MS for the qualitative and quantitative analysis of sofosbuvir in film coated tablets and profiling degradants

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journal of Pharmaceutical Analysis 2017年第4期7卷 208-213页

作者： María del Mar Contreras aránzazu Morales-Soto Antonio Segura-Carretero javier Valverde Department of Analytical Chemistry Faculty of SciencesUniversity of GranadaAvenida Fuentenueva s/n18071 GranadaSpain Research and Development Functional Food Centre (CIDAF) Bioregión BuildingHealth Science Technological ParkAvda. Del Conocimiento s/n18016 GranadaSpain

Sofosbuvir is one of the new direct-acting antiviral drugs against hepatitis C virus(HCV) infection. This drug has recently been launched into the market, and generic versions of the medication are expected to be produced by local drug producers in some countries. Therefore, new methods are required to control sofosbuvir in pharmaceuticals. In the present study, a new method based on reversed phase(RP)-ultra-high performance liquid chromatography(UHPLC) coupled to diode array detection(DAD) and mass spectrometry(MS) was developed to facilitate the qualitative and quantitative analysis of sofosbuvir in film coated tablets. A wavelength of 260 nm was selected to perform a cost-effective quantification and the method showed adequate linearity,with an R^2 value of 0.9998, and acceptable values of accuracy(75%–102%) and precision(residual standard deviation armaceutical dosage forms, but also for potential degradants.

关键词： Film coated tablets Mass spectrometry RP-UHPLC Sofosbuvir