检索结果-南通市图书馆

Critical Behaviour of the Gaussian Model on Sierpinski Carpets

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2001年第7期18卷 882-884页

作者： LIN Zhen-Quan kong Xiang-mu Department of Physics Wenzhou Normal CollegeWenzhou 325027 Department of Physics Qufu Normal UniversityQufu 273165

The Gaussian model on Sierpinski carpets with two types of nearest neighbour interactions K and Kw and two corresponding types of the *** constants b and bw is constructed by generalizing that on translationally invariant square *** critical behaviours are studied by the renormalization-group approach and spin rescaling *** are found to be quite different from that on translationally invariant square *** are two critical points at(K^(*)=b,K^(*)_(w)=0)and(K^(*)=0,K^(*)_(w)=bw),and the correlation length critical exponents are calculated.

关键词： method critical invariant

Kinetic Behavior of Exchange-Driven Growth with Catalyzed-Birth Processes

维普期刊数据库评论

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 2006年第6X期46卷 1113-1120页

作者： WANG Hai-Feng LIN Zhen-Quan kong Xiang-mu Department of Physics Wenzhou University Wenzhou 325027 China Department of Physics Qufu Normal University Qufu 273165 China

Two catalyzed-birth models of n-species （n ≥ 2） aggregates with exchange-driven growth processes are proposed and compared. In the first one, the exchange reaction occurs between any two aggregates Ak^m and Af^m of the same species with the rate kernels Km（k,j）= Kmkj （m = 1, 2,... ,n, n ≥ 2）, and aggregates of A^n species catalyze a monomer-birth of A^l species （l = 1, 2 , n - 1） with the catalysis rate kernel Jl（k,j） -Jlkj^v. The kinetic behaviors are investigated by means of the mean-field theory. We find that the evolution behavior of aggregate-size distribution ak^l（t） of A^l species depends crucially on the value of the catalysis rate parameter v：（i） ak^l（t） obeys the conventional scaling law in the case of v ≤ 0, （ii） ak^l（t） satisfies a modified scaling form in the case of v 〉 0. In the second model, the mechanism of monomer-birth of An-species catalyzed by A^l species is added on the basis of the first model, that is, the aggregates of A^l and A^n species catalyze each other to cause monomer-birth. The kinetic behaviors of A^l and A^n species are found to fall into two categories for the different v：（i） growth obeying conventional scaling form with v ≤ 0, （ii） gelling at finite time with v 〉 0.

关键词： behavior exchange-driven growth catalyzed-birth scaling law rate equations

A Solvable Decorated Ising Lattice Model

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2006年第3期45卷 555-557页

作者： SUN Chun-Feng kong Xiang-mu YIN Xun-Chang Department of Physics Xiaogan University Xiaogan 432100 China Department of Physics Qufu Normal University Qufu 273165 China Interdisciplinary Center of Theoretical Studies the Chinese Academy of Sciences Beijing 100080 China

A decorated lattice is suggested and the Ising model on it with three kinds of interactions K1, K2, and K3 is studied. Using an equivalent transformation, the square decorated Ising lattice is transformed into a regular square Ising lattice with nearest-neighbor, next-nearest-nelghbor, and four-spin interactions, and the critical fixed point is found at K1 = 0.5769, K2= -0.0671, and K3 = 0.3428, which determines the critical temperature of the system. It is also found that this system and the regular square Ising lattice, and the eight-vertex model belong to the same universality class.

关键词： Ising model square decorated lattice critical point universality class

Discovery of Wolitu Pb-Zn deposit through geochemical prospecting under loess cover in Inner Mongolia, China

在线全文

学校读者我要写书评

暂无评论

Geoscience Frontiers 2017年第5期8卷 951-960页

作者： Fan Yang mu kong Huazhong Liu Jinsong Yu Shaoping Yang Zhihong Hao Dehui Zhang Kuang Cen School of Earth Sciences and Resources China University of Geosciences (Beijing) Beijing 100083 China Institute of Geophysical and Geochemical Exploration Chinese Academy of Geological Sciences Langfang 065000 Hebei China UNESCO International Centre on Global-Scale Geochemistry Langfang 065000 Hebei China Key Laboratory of Geochemical Exploration Ministry of Land and Resources China Langfang 065000 Hebei China

We report the finding of the Wolitu Pb-Zn deposit in Inner Mongolia, China, through a series of geochemical surveys. The Wolitu area, located in the loess-cover area in the Hure Banner, Tongliao City,Inner Mongolia, and neighboring the Horqin Sandy Land to the north, had no previous history of Pb-Zn mining or record of Pb-Zn mineralization. Our study identified a large Pb-Zn anomaly with potential zones of mineralization by stream sediment survey. Random rock sampling reveals limonitization at sporadic outcrops in the gullies. The high concentrations of Pb in the residual debris provided guidelines to fix the position for exploratory trench. Oxidized concealed orebodies were identified by *** orebodies in veins hosted within the structural zone between slates and marbles of the upper Carboniferous Shizuizi Formation and the Permian granite were discovered by drilling. It is computed that the ore reserve may reach up to 540,000 tones with Pb grade of 1.27% and Zn of 1.9%. This case study is an excellent example for identifying potential polymetallic deposits in loess covered terrains using geochemical exploration.

关键词： Geochemical exploration Loess-covered area Pb-Zn deposit Resource reserve Inner Mongolia

Two cardenolide glycosides from the seed fairs of Asclepias curassavica and their cytotoxic activities

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Natural Medicines 2022年第3期20卷 202-209页

作者： JI Ai-Jia MA Qing kong mu-Yan LI Le-Yan CHEN Xin-Lian LIU Zhong-Qiu WU Jin-Jun ZHANG Rong-Rong Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People’s Republic of China School of Pharmaceutical SciencesGuangzhou University of Chinese MedicineGuangzhou 510006China China Resources Sanjiu Medical&Pharmaceutical Co. Ltd.Shenzhen 518110China School of Pharmaceutical Sciences Sun Yat-Sen UniversityGuangzhou 510006China

Two cardenolide glycosides,corotoxigenin 3-0-[β-D-glucopyranosyl-(l→4)-6-deoxy-β-D-glucopyranoside](1)and coroglaucigenin 3-0-[β-D-glucopyranosyl-(l→4)-6-deoxy-β-D-glucopyranoside](2),were isolated from the seed fairs of Asclepias *** structures of 1-2 were determined based on the combination of the analysis of their MS,NMR spectroscopic data and acid *** inhibitory effects of compounds 1 and 2 on human colorectal carcinoma cells(HCT116),non-small cell lung carcinoma cells(A549)and hepatic cancer cells(SMMC-7721)were *** results showed that both compounds 1 and 2 significantly inhibited the viability,proliferation,and migration of A549,HCT116 and SMMC-7721 cells,suggesting that compounds 1 and 2 can be applied in the treatment of lung,colon and liver cancers in clinical *** study may not only provide a scientific basis for clarifying the active ingredients in ***,but also help to understand its antitumor activity,which can promote the application of *** in clinical treatment of various cancers.

关键词： Asclepias curassavica Cardenolide glycosides Structure identification Cytotoxic activity

Factors associated with improvement in waist-to-height ratio among newly diagnosed type 2 diabetes patients treated with acarbose or metformin:A randomized clinical trial study

在线全文

学校读者我要写书评

暂无评论

World Journal of Diabetes 2020年第11期11卷 514-526页

作者： Lu-Lu Song Xin Wang Zhao-Jun Yang Xiao-mu kong Xiao-Ping Chen Bo Zhang Wen-Ying Yang Department of Endocrinology China-Japan Friendship HospitalBeijing 100029China

BACKGROUND The waist-to-height ratio(WHtR)is a promising anthropometric measure used to evaluate cardiovascular risk in diabetes and metabolic syndrome *** metformin and acarbose in Chinese as the initial hypoglycaemic treatment trial demonstrated that acarbose and metformin reduced the WHtR after 24 wk of *** To investigate the factors associated with a decrease in the WHtR in newly diagnosed Chinese type 2 diabetes patients receiving acarbose or metformin *** At 24 wk,343 patients in the acarbose treatment and 333 patients in the metformin treatment were included in this *** the basis of the reduction in the WHtR,these participants were divided into the following two groups:LowΔWHtR group and highΔWHtR *** and related parameters associated with a highΔWHtR were investigated using univariate and multivariate logistic regression *** A significant decrease in the WHtR was observed in both treatment groups(acarbose:-0.015,95%confidence interval[CI]:-0.018 to-0.012,P<0.001;metformin:-0.013,95%CI:-0.016 to-0.010,P<0.001).In both the acarbose and metformin groups,the WHtR of the women was more likely to be reduced than that of the *** the acarbose group,a lower baseline area under the curve of glucagon-like peptide 1(AUCGLP-1)was associated with a highΔWHtR(odds ratio[OR]=0.796,P<0.001),while a higher baseline AUCGLP-1 was associated with a highΔWHtR in the patients treated with metformin(OR=1.133,P=0.025).Regarding the changes from baseline,an increase in AUCGLP-1 was associated with a highΔWHtR in the acarbose(OR=1.121,P=0.016)but not metformin group.A higher reduction in high-density lipoprotein cholesterol/non-highdensity lipoprotein cholesterol was also associated with a highΔWHtR in the acarbose arm(OR=20.735,P=0.001).In the metformin arm,a higher reduction in fasting plasma glucose(OR=0.843,P=0.039)and total cholesterol was associated with a highΔWHtR(OR=0.743,P=0.013).CONCLUSION A lower glucag

关键词： Waist-to-height ratio Abdominal obesity Type 2 diabetes Association Acarbose Metformin

无标度立体Koch网络的建立及其结构性质研究

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

物理学报 2010年第4期59卷 2244-2249页

作者：刘甲雪孔祥木曲阜师范大学物理工程学院曲阜273165

根据经典Koch曲线的构造,利用四面体作为迭代基元构造了一种立体Koch网络并对其结构性质做了研究,给出了该网络的度分布函数,计算了该网络的团簇系数、平均最短路径长度以及度关联函数.结果表明,所构建的网络是无标度网络,度分布临界指... 详细信息

根据经典Koch曲线的构造,利用四面体作为迭代基元构造了一种立体Koch网络并对其结构性质做了研究,给出了该网络的度分布函数,计算了该网络的团簇系数、平均最短路径长度以及度关联函数.结果表明,所构建的网络是无标度网络,度分布临界指数γ≈3.32;其团簇系数趋向于常数值0.870435;平均路径长度与网络尺寸的对数呈正比关系,说明该网络具有小世界网络特性.另外,计算结果表明knn(k)随k的变化而变化,说明该Koch网络具有一定的度关联性.

关键词：复杂网络无标度度关联 Koch网络

The efficacy and safety of Vortioxetine in patients with major depressive disorder:a systematic review and meta-analysis

在线全文

学校读者我要写书评

暂无评论

The efficacy and safety of Vortioxetine in patients with maj...

中国解剖学会2015年年会

作者： Guo Baolin Luo Shicheng kong mu Yan Yudong Wang Yayun Department of Anatomy K.K.Leung Brain Research Centrethe Fourth Military Medical University

＜正＞Collaborative Innovation Center for Brain Science,Fudan *** trials on vortioxetine have yielded conflicting evidence concerning its overall efficacy for the treatment of major depressive disorder（MDD）at varying *** assess the efficacy and safety of vortioxetine on MDD,we conducted a meta-analysis of six randomized controlled trials（RCTs）,

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

长程作用下Gauss系统的临界温度

物理学报 2005年第9期54卷 4365-4369页

作者：王春阳孔祥木曲阜师范大学物理系曲阜273165

利用傅里叶变换的方法,严格求解了d维(d=1,2和3)超立方晶格和二维三角晶格上具有长程相互作用的Gauss模型(这里考虑的长程作用有幂指数、指数和对数三种形式).得到了这些情况下系统的临界点(温度),并对不同形式的长程作用对临界点的影... 详细信息

利用傅里叶变换的方法,严格求解了d维(d=1,2和3)超立方晶格和二维三角晶格上具有长程相互作用的Gauss模型(这里考虑的长程作用有幂指数、指数和对数三种形式).得到了这些情况下系统的临界点(温度),并对不同形式的长程作用对临界点的影响进行了比较.结果表明,长程相互作用的存在,使得系统的临界温度有了一定程度的升高,它们对系统临界温度的影响与其衰减的快慢有关.

关键词： Gauss模型临界点超立方晶格三角晶格临界温度长程作用系统长程相互作用傅里叶变换立方晶格