检索结果-南通市图书馆

原子核物理评论 2009年第S1期26卷 153-157页

作者： s.Kubono T.Teranishi M.notani H.Baba s.nishimura J.Y.Moon M.nishimura s.Michimasa H.Iwasaki Y.Yanagisawa n.Hokoiwa M.Kibe J.H.Lee s.Kato Y.Gono C.s.Lee Center for nuclear study University of Tokyo(CNS) Department of Physics Kyushu University RIKEn(The Institute of Physical and Chemical Research) Department of Physics Chung-Ang University Department of Physics Yamagata University

Proton resonant states in 22Mg have been investigated by the resonant elastic scattering of 21na+p. The 21na beam with a mean energy of 4.00 MeV/u was separated by the Cns radioactive ion beam separator(CRIB) and bombarded a thick(CH2)n target. The energy spectra of recoiled protons were measured at scattering angles of θcm ≈172° and 146°,respectively. A new state at 7.06 MeV has been observed clearly and another new one at 7.28 MeV is tentatively identified due to its low statistics. The proton resonant parameters were deduced from an R-matrix analysis of the differential cross section data. The astrophysical resonant reaction rate for the 18ne(α,p)21na reaction has been estimated,and it is about five times larger than that assumed before.

关键词： nuclear astrophysics reaction rate nuclear structure and property

Microbiota-host interplay at the gut epithelial level,health and nutrition

在线全文

学校读者我要写书评

暂无评论

Journal of Animal science and Biotechnology 2017年第2期8卷 327-334页

作者： Jean-Paul Lallès Division of Human nutrition Division INRA Clermont-Ferrand France Human nutrition Research Center-West Nantes France

Growing evidence suggests the implication of the gut microbiota in various facets of health and disease. In this review, the focus is put on microbiota-host molecular cross-talk at the gut epithelial level with special emphasis on two defense systems： intestinal alkaline phosphatase（IAP） and inducible heat shock proteins（iHsPs）. Both IAP and iHsPs are induced by various microbial structural components（e.g. lipopolysaccharide, flagellin, CpG DnA motifs）,metabolites（e.g. n-butyrate） or secreted signal molecules（e.g., toxins, various peptides, polyphosphate）. IAP is produced in the small intestine and secreted into the lumen and in the interior milieu. It detoxifies microbial components by dephosphorylation and, therefore, down-regulates microbe-induced inflammation mainly by inhibiting nF-κB pro-inflammatory pathway in enterocytes. IAP gene expression and enzyme activity are influenced by the gut microbiota. Conversely, IAP controls gut microbiota composition both directly, and indirectly though the detoxification of pro-inflammatory free luminal adenosine triphosphate and inflammation inhibition. Inducible HsPs are expressed by gut epithelial cells in proportion to the microbial load along the gastro-intestinal tract. They are also induced by various microbial components, metabolites and secreted molecules. Whether iHsPs contribute to shape the gut microbiota is presently unknown. Both systems display strong anti-inflammatory and anti-oxidant properties that are protective to the gut and the host. Importantly, epithelial gene expressions and protein concentrations of IAP and iHsPs can be stimulated by probiotics, prebiotics and a large variety of dietary components, including macronutrients（protein and amino acids, especially L-glutamine, fat, fiber）, and specific minerals（e.g. calcium）and vitamins（e.g. vitamins K1 and K2）. some food components（e.g. lectins, soybean proteins, various polyphenols） may inhibit or disturb these systems. The general cel ular and molecula

关键词： Diet Gut Inducible heat shock protein Inflammation Intestinal alkaline phosphatase Microbiota

Fibroblasts upregulate expression of adhesion molecules and promote lymphocyte retention in 3D fibroin/gelatin scaffolds

在线全文

学校读者我要写书评

暂无评论

Bioactive Materials 2021年第10期6卷 3449-3460页

作者： Maxim A.nosenko Anastasia M.Moysenovich Anastasia Y.Arkhipova Kamar-sulu n.Atretkhany sergei A.nedospasov Marina s.Drutskaya Mikhail M.Moisenovich Center for Precision Genome Editing and Genetic Technologies for Biomedicine Engelhardt Institute of Molecular BiologyRussian Academy of SciencesMoscow119991Russia Biological Faculty Lomonosov Moscow State UniversityMoscow119991Russia Biological Faculty Shenzhen MSU-BIT UniversityShenzhen518172China sirius University of science and Technology Federal Territory SiriusKrasnodarsky Krai354340Russia

Bioengineered scaffolds are crucial components in artificial tissue *** general,these scaffolds provide inert three-dimensional(3D)surfaces supporting cell ***,some scaffolds can affect the phenotype of cultured cells,especially,adherent stromal cells,such as *** we report on unique properties of 3D fibroin/gelatin materials,which may rapidly induce expression of adhesion molecules,such as ICAM-1 and VCAM-1,in cultured primary murine embryonic fibroblasts(MEFs).In contrast,two-dimensional(2D)fibroin/gelatin films did not show significant effects on gene expression profiles in fibroblasts as compared to 3D culture ***,TnF expression was induced in MEFs cultured in 3D fibroin/gelatin scaffolds,while genetic or pharmacological TnF ablation resulted in diminished ICAM-1 and VCAM-1 expression by these *** selective MAPK inhibitors,we uncovered critical contribution of JnK to 3D-induced upregulation of these adhesion ***,we observed ICAM-1/VCAM-1-dependent adhesion of lymphocytes to fibroblasts cultured in 3D fibroin/gelatin scaffolds,but not on 2D fibroin/gelatin films,suggesting functional reprogramming in stromal cells,when exposed to 3D ***,we observed significant infiltration of lymphocytes into 3D fibroin/gelatin,but not into collagen scaffolds in vivo upon subcapsular kidney implantation in *** our data highlight the important features of fibroin/gelatin scaffolds,when they are produced as 3D sponges rather than 2D films,which should be considered when using these materials for tissue engineering.

关键词： Bioengineering Cell adhesion Artificial lymphoid tissue Mouse embryonic fibroblasts stromal cells TnF ICAM-1 VCAM-1 JnK Fibroin/gelatin 3D 2D

secure storage and accessing the data in cloud using optimized homomorphic encryption

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 Control and Decision 2023年第1期10卷 90-98页

作者： s.Gnana sophia K.K.Thanammal s.s.sujatha Department of Computer science and Application MS UniversityS.T.Hindu CollegeNagercoilIndia

Different efforts have been undertaken to customizing a security and privacy concern in clouddata access. Therefore, the security measures are reliable and the data access was verified as themajor problem in the cloud environment. To overcome this problem, we proposed an efficientdata access control using optimized homomorphic encryption (HE). Because users outsourcetheir sensitive information to cloud providers, data security and access control is one of themost difficult ongoing cloud computing research projects. Existing solutions that rely on cryptographictechnologies to address these security issues result in significant complexity for bothdata and cloud service providers. The experimental results show that the key generation is 7.6%decreased by HE and 14.14% less than the proposed method. The encryption time is 11.34% lessthan the optimized HE and 23.28% decreased by ECC. The decryption time is 13.18% and 24.07%when compared with HE and ECC respectively.

关键词： Homomorphic encryption(HE) elliptical curve cryptography(ECC) data security cloud computing data access

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

擦身而过

中国国家旅游 2015年第1期 18-25页

作者： Aaron ng

拍摄地点:内蒙古,锡林郭勒草原拍摄时间:9月28日InFO:佳能6D,F/6.3,1/800秒,IsO 200马群奔驰时踏起的水花,在阳光的照射下显得气势磅礴。当马蹄踏地的嘚嘚声越来越响,飘洒出来的水花越来越大时,我真的有点紧张。在镜头里看到马群越来越... 详细信息

拍摄地点:内蒙古,锡林郭勒草原拍摄时间:9月28日InFO:佳能6D,F/6.3,1/800秒,IsO 200马群奔驰时踏起的水花,在阳光的照射下显得气势磅礴。当马蹄踏地的嘚嘚声越来越响,飘洒出来的水花越来越大时,我真的有点紧张。在镜头里看到马群越来越近,知道它们已向我这边冲过来了,我本能地抱着相机往左边闪开。它们在离我不到1米的地方擦身而过,溅起的水花全洒落在我身上。我全身都湿透了,站在原地发了一阵呆。

关键词：水花水污染中国

EFFECTs OF RARE EARTH MIXTURE On MECHAnICAL PROPERTIEs OF CuZnAl sHAPE MEMORY ALLOYs

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 Metallurgica sinica(English Letters) 1999年第4期12卷 509-514页

作者： n.C.si and s.C.sun Departmentof Materials Engineering,Jiangsu University of science and Technology,zhenjiang 212013 , China

With thehelpofquantitative metallograph ,tensiletest,electron probeandscan electron mi croscope,theinfluencesof mixture rareearth ( RE) on the grain size, dynamics of grain growth and mechanicalpropertiesof CuZnAlshape memoryalloys wereinvestigated . Theex perimentalresultsshowsthat REcanrefinegrainsgreatly,improvethe mechanicalpropertiesremarkably andchangethetensilefracturefrom brittletypebordered grainstoplastictypeinthecondition of maintainingshape memory properties. Moreover microstructuresrevealthatREwhich accumulates on the grain boundariescan restrain grains’growing. In addition, the mechanismsofrefininggrainsizeandimproving mechanicalpropertiesarealsodiscussed.

关键词： rareearth CuZnAlalloy mechanicalproperty,shape memory alloys

On THE GLOBAL sTABILITY COnJECTURE OF THE GEnOTYPE sELECTIOn MODEL

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica scientia 2011年第2期31卷 512-528页

作者： s.H. saker Department of Mathematics King Saud University Department of Mathematics Faculty of Science Mansoura University

In 1994, Grove, Kocic, Ladas, and Levin conjectured that the local stability and global stability conditions of the fixed point -y= 1/2 in the genotype selection model should be equivalent. In this article, we give an affirmative answer to this conjecture and prove that local stability implies global stability. some illustrative examples are included to demonstrate the validity and applicability of the results.

关键词： Local stability global stability discrete genotype selection model

Overview of multiplex immunohistochemistry/immunofluorescence techniques in the era of cancer immunotherapy

在线全文

学校读者我要写书评

暂无评论

Cancer Communications 2020年第4期40卷 135-153页

作者： Wei Chang Colin Tan sanjna nilesh nerurkar Hai Yun Cai Harry Ho Man ng Duoduo Wu Yu Ting Felicia Wee Jeffrey Chun Tatt Lim Joe Yeong Tony Kiat Hon Lim Yong Loo Lin school of Medicine National University of SingaporeSingapore169856Singapore Department of Anatomical Pathology Singapore General HospitalSingapore169856Singapore Institute of Molecular Cell Biology(IMCB) Agency of ScienceTechnology and Research(A*STAR)Singapore169856Singapore singapore Immunology network Agency of Science(SIgN)Technology and Research(A*STAR)Singapore169856Singapore Duke-nUs Medical school Singapore169856Singapore

Conventional immunohistochemistry(IHC)is a widely used diagnostic technique in tissue ***,this technique is associated with a number of limitations,including high inter-observer variability and the capacity to label only one marker per tissue *** review details various highly multiplexed techniques that have emerged to circumvent these constraints,allowing simultaneous detection of multiple markers on a single tissue section and the comprehensive study of cell composition,cellular functional and cell-cell *** these techniques,multiplex Immunohistochemistry/Immunofluorescence(mIHC/IF)has emerged to be particularly ***/IF provides high-throughput multiplex staining and standardized quantitative analysis for highly reproducible,efficient and cost-effective tissue *** technique has immediate potential for translational research and clinical practice,particularly in the era of cancer immunotherapy.

关键词： immunofluorescence immunohistochemistry immunotherapy multiplex overview

A novel Approach with Time-splitting spectral Technique for the Coupled schrdinger–Boussinesq Equations Involving Riesz Fractional Derivative

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2017年第9期67卷 301-308页

作者： s.saha Ray Department of Mathematics National Institute Technology

In the present paper the Riesz fractional coupled schr6dinger-Boussinesq （s-B） equations have been solved by the time-splitting Fourier spectral （TsFs） method. This proposed technique is utilized for discretizing the schrodinger like equation and further, a pseudospectral discretization has been employed for the Boussinesq-like equation. Apart from that an implicit finite difference approach has also been proposed to compare the results with the solutions obtained from the time-splitting technique. Furthermore, the time-splitting method is proved to be unconditionally stable. The error norms along with the graphical solutions have also been presented here.

关键词： coupled schrsdinger-Boussinesq equations Riesz fractional derivative discrete fourier transform inverse discrete Fourier transform

在线全文

学校读者我要写书评

暂无评论

中小学理科教学指南

中小学理科教学指南