检索结果-南通市图书馆

Advances in Applied mathematics and mechanics 2013年第3期5卷 269-308页

作者： m.Aminbaghai m.Dorn J.Eberhardsteiner B.Pichler Institute for mechanics of materials and Structures Vienna University of Technology(TU Wien)Karlsplatz 13/202A-1040 ViennaAustria Linnaeus University Department of Building and Energy TechnologyL¨uckligs Plats 1S-35195 V¨axj¨oSweden

many problems in engineering sciences can be described by linear,inhomogeneous,m-th order ordinary differential equations(ODEs)with variable *** this wide class of problems,we here present a new,simple,flexible,and robust solution method,based on piecewise exact integration of local approximation polynomials as well as on averaging local *** method is designed for modern mathematical software providing efficient environments for numerical matrix-vector operation-based *** on cubic approximation polynomials,the presented method can be expected to perform(i)similar to the Runge-Kutta method,when applied to stiff initial value problems,and(ii)significantly better than the finite difference method,when applied to boundary value ***,we use the presented method for the analysis of engineering problems including the oscillation of a modulated torsional spring pendulum,steady-state heat transfer through a cooling web,and the structural analysis of a slender tower based on second-order beam *** convergence studies provide insight into the satisfying characteristics of the proposed solution scheme.

关键词： Numerical integration polynomial approximation ODE variable coefficients initial conditions boundary conditions stiff equation

Assessment of lnc RNA GAS5, lnc RNA HEIH, lnc RNA BISPR and its m RNA BST2 as serum innovative non-invasive biomarkers: Recent insights into Egyptian patients with hepatitis C virus type 4

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2020年第2期26卷 168-183页

作者： Nourhan m El Samaloty marwa I Shabayek Ramy S Ghait Shohda A El-maraghy Sherine m Rizk maha m El-Sawalhi Biochemistry Section PharmacologyToxicology and Biochemistry DepartmentFaculty of Pharmaceutical Sciences and Pharmaceutical IndustriesFuture UniversityCairo 11795Egypt Internal medicine Gastroenterology and Hepatology DepartmentFaculty of MedicineAin Shams UniversityCairo 11566Egypt Biochemistry Department Faculty of PharmacyCairo UniversityCairo 11562Egypt

BACKGROUND Hepatitis C virus(HCV)infection and its consequent complications are undeniably a public health burden worldwide,particularly in *** evidence suggests that many lncRNAs have relevant roles in viral infections and antiviral *** To investigate the expression profiles of circulating lncRNAGAS5,lncRNAHEIH,lncRNABISPR and mRNABST2 in naïve,treated and relapsed HCV Egyptian patients,to elucidate relation to HCV infection and their efficacy as innovative biomarkers for the diagnosis and prognosis of HCV *** One hundred and thirty HCV-infected Egyptian patients and 20 healthy controls were included in this *** lncRNAs and mRNABST2 were measured using quantitative real-time polymerase chain reaction(qRT-PCR).RESULTS Our results indicated that serum lncRNAGAS5 and LncRNABISPR were upregulated,whereas mRNA BST2 and LncRNA HEIH were downregulated in naïve *** contrast,HCV patients treated with sofosbuvir and simeprevir;with sofosbuvir and daclatasvir;or with sofosbuvir,daclatasvir and ribavirin exhibited lower levels of lncRNAGAS5 and lncRNABISPR with higher mRNABST2 compared to naïve ***,patients relapsed from sofosbuvir and simeprevir showed higher levels of these lncRNAs with lower mRNABST2 compared to treated ***5 and lncRNABISPR were positively correlated with viral load and ALT at PmRNABST2 was negatively correlated with viral load at Pment in HCV pathogenesis or antiviral response and highlights their promising roles in diagnosis and prognosis of HCV.

关键词： lncRNA GAS5 lncRNA BISPR mRNA BST2 lncRNA HEIH Hepatitis C Biomarkers

The Dual Spaces of Sets of Difference Sequences of Order m and matrix Transformations

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta mathematica Sinica,English Series 2007年第3期23卷 521-532页

作者： Eberhard mALKOWSKY m.mURSALEEN Suthep SUANTAI Department of mathematics University of GiessenArndtstrasse 2D-35392 GiessenGermany and Department of MathematicsFaculty of Sciences and MathematicsUniversity of NiViegradska 3318000 NiSerbia and Montenegro Department of mathematics Aligarh Muslim UniversityAligarh 202002India and Department of MathematicsFaculty of Science Department of mathematics Chiang Mai UniversityChiang MaiThailand

Let p = （pk）k=0^∞ be a bounded sequence of positive reals, m C N and u be s sequence of nonzero terms. If x = （xk）k=0^∞ is any sequence of complex numbers we write Δ（m）x for the sequence of the m th order differences of x and Δu^（m）X = {x=（x）k=0^∞ uΔ（m）x ∈ X} for any set X of sequences. We determine the α-, β- and γ-duals of the sets Δμ^（m）X for X=co（p）,c（p）,l∞（p） and characterize some matrix transformations between these spaces Δ^（m）X.

关键词： difference sequences dual spaces matrix transformations

message from Deputy Editor-in-Chief Gabriel m Leung—International Trade and Global Health Protection

在线全文

学校读者我要写书评

暂无评论

China CDC weekly 2019年第4期1卷 45-46页

作者： Gabriel m Leung China CDC Weekly Dean of medicine The University of Hong KongHong Kong SARChina

It was external trade that first prompted the collection and reporting of surveillance data at the foreign ports from which the US imported *** established Bulletin of the Public Health—the first precursor to the US ... 详细信息

关键词： Trade prompt Health

Some novel integration techniques to explore the conformable m-fractional Schrödinger-Hirota equation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Ocean Engineering and Science 2022年第4期7卷 337-344页

作者： Asim Zafar m.Raheel m.Asif Kamyar Hosseini mohammad mirzazadeh Lanre Akinyemi Department of mathematics COMSATS University IslamabadVehari CampusPakistan Department of mathematics and Statistics ISP MultanPakistan Department of mathematics Rasht BranchIslamic Azad UniversityRashtIran Department of Engineering Sciences Faculty of Technology and EngineeringEast of GuilanUniversity of GuilanVajargah P.C.44891-63157RudsarIran Department of mathematics Lafayette CollegeEastonPAUSA

The current study deals with exact soliton solutions for Schrödinger-Hirota(SH)equation via two modi-fied integration *** methods are known as the improved(G/G)-expansion method and the Kudryashov *** model is a generalized version of the nonlinear Schrödinger(NLS)equation with higher order dispersion and cubic *** can be considered as a more accurate approximation than the NLS equation in explaining wave propagation in the ocean and optical fibers.A novel deriva-tive operator named as the conformable truncated m-fractional is used to study the above mentioned *** obtained results can be used in describing the Schrödinger-Hirota equation in some better *** the obtained results are verified through symbolic computational ***,the ob-tained results show that the suggested approaches have broaden capacity to secure some new soliton type solutions for the fractional differential equations in an effective *** the end,the results are also explained through their graphical representations.

关键词： Shrödinger-Hirota equation Truncated m-fractional derivative Soliton solutions

Rice plant growth and yield: foliar application of plasma activated water

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plasma Science and Technology 2021年第7期23卷 134-143页

作者： m m RASHID mamunur RASHID m m HASAN m R TALUKDER Plasma Science and Technology Lab Department of Electrical and Electronic EngineeringUniversity of RajshahiRajshahi 6205Bangladesh Plant Pathology and mycology Lab Department of BotanyUniversity of RajshahiRajshahi 6205Bangladesh Plant Pathology Lab Department of Agronomy and Agricultural ExtensionUniversity of RajshahiRajshahi 6205Bangladesh

Plasma activated water(PAW)was prepared for 10 min to be applied one toﬁve times as a foliar spray to rice plants,to investigate plant growth,yield and the concentrations of total soluble protein and sugar in the rice grains *** results reveal that(1)the plant height,stem diameter,dry weight,chlorophyll and total carotene concentrations were improved by∼15%,∼25%,∼24%,∼47%and∼45%,respectively,with respect to control,(2)defense mechanisms of the plants treated with PAW were improved,(3)concentrations of total soluble protein and sugar were enhanced in the rice grains of PAW treated plants and(4)yield was increased by∼14%.

关键词： plasma agriculture plasma activated water rice plant growth rice yield total soluble protein

Bilayer mSe_(2)(m=Zr,Hf,mo,W)performance as a hopeful thermoelectric materials

在线全文

学校读者我要写书评

暂无评论

Journal of Semiconductors 2023年第3期44卷 43-51页

作者： mahmood Radhi Jobayr Ebtisam m-T.Salman Department of Radiology Technology College of Health and Medical TechnologyMiddle Technical University(MTU)BaghdadIraq Department of Physics College of Education for Pure Science(Ibn-AL-Haitham)University of BaghdadBaghdadIraq

Significant advancements in nanoscale material efficiency optimization have made it feasible to substantially adjust the thermoelectric transport characteristics of *** by the prediction and enhanced understanding of the behavi-or of two-dimensional(2D)bilayers(BL)of zirconium diselenide(ZrSe_(2)),hafnium diselenide(HfSe_(2)),molybdenum diselenide(moSe_(2)),and tungsten diselenide(WSe_(2)),we investigated the thermoelectric transport properties using information generated from experimental measurements to provide inputs to work with the functions of these materials and to determine the critical factor in the trade-off between thermoelectric *** on the Boltzmann transport equation(BTE)and Barden-Shockley deformation potential(DP)theory,we carried out a series of investigative calculations related to the thermoelectric properties and characterization of these *** calculated dimensionless figure of merit(ZT)values of 2DBL-mSe_(2)(m=Zr,Hf,mo,W)at room temperature were 3.007,3.611,1.287,and 1.353,respectively,with convenient electronic *** ad-dition,the power factor is not critical in the trade-off between thermoelectric materials but it can indicate a good thermoelec-tric ***,the overall thermal conductivity and power factor must be considered to determine the preference of thermoelectric materials.

关键词： ZT thermoelectric property 2D-bilayer Boltzmann-transport equation TE power factor

Anti-müllerian hormone and antral follicle count predict ovarian response in women less than 45 years following GnRH antagonist multiple-dose protocol

在线全文

学校读者我要写书评

暂无评论

Asian pacific Journal of Reproduction 2022年第5期11卷 208-216页

作者： mohammed m.Laqqan maged m.Yassin Department of Laboratory medical Sciences Faculty of Health SciencesIslamic University of GazaP.O.Box 108GazaPalestine Department of Human Physiology Faculty of MedicineIslamic University of GazaP.O.Box 108GazaPalestine

Objective:To speculate which of the following parameters:antral follicle count(AFC),anti-müllerian hormone(AmH),follicle-stimulating hormone(FSH)and age can be used as a predictor of ovarian response to gonadotropin-releasing hormone(GnRH)antagonist stimulation multiple-dose protocol in women under 45 years,and to determine the cutoff value of these parameters and their correlations for predicting low and high ovarian ***:This prospective study included 462 women with the mean age of(29.3±6.5)*** women were subjected to the GnRH antagonist stimulation multiple-dose *** the second day of the menstrual cycle,ultrasonography was conducted to determine AFC in both *** blood samples were collected to evaluate the level of estradiol,FSH,luteinizing hormone,prolactin,thyroid-stimulating hormone,and *** women were divided into three groups:low response(AHHmL,n=173),normal response(AmH=1.0-3.5 ng/mL,n=175),and high response(AmH>3.5 ng/mL,n=114).Results:A significant decrease was found in the age and FSH level in the high response group compared to other groups(PmH,estradiol on human chorionic gonadotropin(hCG)day,AFC,mature oocytes,fertilized oocytes,and embryos transferred in the high response group compared to the other two groups(Pmonstrated that AFC and AmH had the highest accuracy,followed by basal FSH level and age in the prediction of low ovarian reserves(PmH,***,the ROC analysis showed that AFC had the highest accuracy,followed by AmH level and age in the prediction of high ovarian reserves with a cutoff value of≥14.50,≥3.63,and≤27.50 years,respectively(Pmen's age,estradiol level,and oocyte fertilization rate in pregnant women compared to non-pregnant women(P<0.001).Additionally,sign

关键词： Antral follicle count Anti-müllerian hormone Antagonist Controlled ovarian stimulation GnRH multiple-dose Ovarian response

High prevalence of bla_(CTX-m) in Enterobactcriaceac isolates from the Kingdom of Bahrain

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical medicine 2011年第12期4卷 937-940页

作者： Khalid m Bindayna mariam murtadha Department of microbiology Immunology & Infectious DiseasesCollege of Medicine and Medical SciencesArabian Gulf UniversityKingdom of Bahrain Salmaniya medical Center Ministry of HealthKingdom of Bahrain

Objective:To determine the molecular epidemiology of extended-spectrumβ-lactamase （ESRL） by testing a cohort of clinical ESBL-producing bacterial isolates that were isolated in the Kingdom of ***:ESBL producing Enterabacleriaceae isolates（based on phenotypie tests） were collected from microbiology Laboratory ot the Salmaniya medical Complex,Bahrain between January-June *** susceptibility to a panel of antibiotics was performed and blaCTX-m genes were detected by multiplex ***:A total of 230 isolates（Escherichia coli.n=180:Klebsiella pneumoniae,n=50） were studied.98%were CTX-m *** Escherichia coli isolates.65（36.1%） harbored CTXm+TF.m combination and 68（37.8%） had CTX-m *** contrast,for Klebsiella pneumoniae isolates only 5（10.0%） harbored the CTX-m combination,and none had CTX-m *** blaCTX-m gene was found predominantly in urine isolates（n=145/230;63.0%）.Sensitivity to imipenem and nitrofurantoin was 100%and 60%.***-m carriage was associated with the resistance lo fluoroquinolones, trimethoprim-sulfamethoxazole and ***:Our study documentes high prevalence of CTX-m ESBL type among Escherichia call and Klebsiella from the Kingdom of *** apparent dissemination of CTX-m producers could represent a substantial barrier in the treatment of community-acquired *** use of extended-Spectrum cephalosporins. quinolones,and aminoglycosides is compromised,leaving carbapenems as the therapeutic option for severe infections caused by ESBL producers.

关键词： ESBL CTX-m Bahrain Escherichia coli Klebsiella pneumoniae

Hydrogen storage of mgi-xmxH2 （m--Ti, V, studied using first-principles calculations re）

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2012年第9期21卷 477-483页

作者： m.Bhihi m.Lakhal H.Labrim A. Benyoussefa A.EI Kenz O.mounkachi E.K.Hlil Laboratoire de magnetisme et de Physique des Hautes Energies associe au CNRST (URAC 12) Departement de PhysiqueB.P. 1014 Faculte des Sciences Universite Mohammed V-Agdal Rabat Morocco National Centre for Energy Sciences and Nuclear Techniques ONESTEN Morocco Institute of Nanomaterials and Nanotechnologies MACslR Rabat Morocco Hassan II Academy of Science and Technology Rabat Morocco Institut N6el CNRS-UJF 38042 Grenoble Cedex 9 France

In this work, the hydrogen storage properties of the mg-based hydrides, i.e., mgl-xmxH2 （m=Ti, V, Fe, 0≤ x ≤ 0.1）, are studied using the Korringa-Kohn-Rostoker （KKR） calculation with the coherent potential approximation （CPA） . In particular, the nature and concentrations of the alloying elements and their effects are studied. moreover, the material＇s stability and hydrogen storage thermodynamic properties are discussed. In particular, we find that the stability and the temperature of desorption decrease without significantly affecting the storage capacities.

关键词： first-principles calculation formation energy electronic structure hydrogen storage