AGE-DEPENDENCE

作品数：8被引量：17H指数：1
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OVERTAKING OPTIMAL HARVESTING FOR AN AGE-DEPENDENT n-DIMENSIONAL FOOD CHAIN MODEL
《International Journal of Biomathematics》2013年第4期73-97,共25页ZHIXUE LUO HUI ZHANG YONGCHENG ZHANG 
Acknowledgments This work is supported by the Nature Science Foundation of China （11061017） and the Nature Science Foundation of Gansu Province of China （1010RJZA075）.
This paper is concerned with an optimal harvesting problem over an infinite horizon for age-dependent n-dimensional food chain model and the analysis of long-term behaviors of the optimal-controlled system. The existe...
关键词：Food chain model overtaking optimal harvesting AGE-DEPENDENCE infinite horizon the maximum principle turnpike property. 
Limb Muscle Hemodynamics and Arterial Distensibility Depend on Atmospheric Pressure in Hypertensive Men
《Biomedical and Environmental Sciences》2013年第4期284-294,共11页Vladimir N.MELNIKOV Sergey G.KRIVOSCHEKOV Tamara G.KOMLYAGINA Svetlana Y.RECHKINA Nathan S.CONSEDINE 
Objective To verify whether peripheral blood circulation and arterial wall distensibility are influenced by atmospheric pressure （AtPr） and to examine if their association is dependent on age and/or sex. Methods Ass...
关键词：Atmospheric pressure Arterial stiffness Compliance Venous circulation AGE-DEPENDENCE Sex difference Season 
OPTIMAL CONTROL PROBLEM FOR A PERIODIC PREDATOR-PREY MODEL WITH AGE-DEPENDENCE
《Annals of Differential Equations》2012年第3期313-319,共7页Zhixue Luo ,Zhenggang Ba,Xiaodi Yu(Dept.of Math.,Lanzhou Jiaotong University,Lanzhou 730070) 
supported by the National Natural Science Foundation of China(11061017);the Natural Science Foundation of Gansu Province(1010RJZA075)
In this paper,we investigate optimal policy for periodic predator-prey system with age-dependence.Namely,we consider the model with periodic vital rates and initial distribution.The existence of optimal control strate...
关键词：PERIODIC PREDATOR-PREY AGE-DEPENDENCE optimal harvesting control the maximum principle 
OPTIMAL CONTROL FOR A NONLINEAR n-DIMENSIONAL COMPETING SYSTEM WITH AGE-STRUCTURE被引量：1
《International Journal of Biomathematics》2012年第3期133-144,共12页ZHI-XUE LUO JIAN-YU YANG YA-JUAN LUO 
This paper is concerned with optimal harvesting control of a first order partial differential equation system representing a nonlinear n-dimensional competitive population model with age-structure. By the Ekeland＇s v...
关键词：Optimal control AGE-DEPENDENCE COMPETITION the maximum principle. 
Age-dependent expression of forkhead box O proteins in the duodenum of rats
《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》2011年第9期730-735,共6页Pan HUANG Zhen-qi ZHOU Rui-hua HUANG Bo ZHOU Quan-wei WEI Fang-xiong SHI 
Project supported by the National Natural Science Foundation of China (No. 30771553);the Basic Research Foundation for Science and Technology of Nanjing Agricultural University,China
The O subfamily of forkhead box(FoxO) proteins is the downstream effector of the insulin-like growth factor-1/phosphoinositide 3-kinase/protein kinase B(IGF-1/PI3K/PKB) signal pathway.The objective of the present stud...
关键词：O subfamily of forkhead box（FoxO） AGE-DEPENDENCE DUODENUM Rat 
Optimal harvesting for an age-dependent n-dimensional food chain model被引量：1
《Applied Mathematics and Mechanics(English Edition)》2008年第5期683-695,共13页雒志学 杜明银 
the National Natural Science Foundation of China(No.10771048);‘Qing Lan’Talent Engineering Funds of Lanzhou Jiaotong University(No.QL-05-18A)
This paper is concerned with optimal harvesting policy for an age-dependent n-dimensional food chain model. The existence and uniqueness of non-negative solution of the system are proved using the fixed point theorem....
关键词：food chain AGE-DEPENDENCE optimal control the maximum principle 
OPTIMAL BIRTH CONTROL FOR AN AGE-DEPENDENT COMPETITION SYSTEM OF N SPECIES被引量：1
《Journal of Systems Science & Complexity》2007年第3期403-415,共13页Zhixue LUO 
The work is supported by‘Qing Lan’Talent Engineering Funds(QL-05-1SA) by Lanzhou Jiaotong University;the National Natural Science Foundation of China under Grant No.604730304.
In this paper, we investigate optimal policies for an age-dependent n-dimensional competition system, which is controlled by fertility. By using Dubovitskii-Milyutin＇s general theory, the maximum principles are obtai...
关键词：um Age-dependence optimal control population model system of partial differential equations the maximum principle. 
Epstein-Barr virus-associated gastric carcinoma: Evidence of age-dependence among a Mexican population被引量：14
《World Journal of Gastroenterology》2005年第39期6096-6103,共8页Roberto Herrera-Goepfert Suminori Akiba Chihaya Koriyama Shan Ding Edgardo Reyes Tetsuhiko Itoh Yoshie Minakami Yoshito Eizuru 
Supported by a Grant No. 12218231 from Grants-in-Aid for Scientific Research of the Ministry of Education, Science, Sports,and Culture of Japan
AIM： To investigate features of Epstein-Barr virus （EBV）associated gastric carcinoma （EBVaGC） among a Mexican population. METHODS： Cases of primary gastric adenocarcinoma were retrieved from the files of the Dep...
关键词：Epstein-Barr virus STOMACH Lymphoepibheliornalike carcinoma Gastric carcinoma EBV-A EBER-1 LMP-1 
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