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海湾扇贝“中科红”品种与普通养殖群体不同温度下早期性状的比较

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水产学报 2008年第6期32卷 876-883页

作者：许飞郑怀平张海滨刘晓张国范中国科学院海洋研究所中国科学院研究生院

采用自交、杂交和混交等不同的交配方式分别获得海湾扇贝'中科红'品种和普通养殖群体(对照组)的受精卵和幼虫,在2.℃、2.0}和2.℃三个温度条件下培养,比较了两个群体在不同温度下的孵化率1、0日龄幼虫存活率、1日龄和10日龄幼虫壳长。... 详细信息

采用自交、杂交和混交等不同的交配方式分别获得海湾扇贝'中科红'品种和普通养殖群体(对照组)的受精卵和幼虫,在2.℃、2.0}和2.℃三个温度条件下培养,比较了两个群体在不同温度下的孵化率1、0日龄幼虫存活率、1日龄和10日龄幼虫壳长。实验结果表明:'中科红'海湾扇贝自交系、杂交系和混交系的孵化率均大于对照组。自交系10日龄幼虫存活率显著高于对照组(P0.05)。'中科红'海湾扇贝自交系(P2.℃)和高温(2.℃)的耐受性均高于对照组。

关键词：海湾扇贝 “中科红”品种幼虫交配方式早期性状温度

Transcellular Transport of Earthworm Proteases: Comparative Studies Using in vivo, in situ and in vitro Models

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Transcellular Transport of Earthworm Proteases: Comparative ...

第一届全国脑与认知科学学术研讨会

作者： Jing Zhao Rong Xiao Man He Ying Liu Qing-Wei Li Rong-Qiao He State Key Laboratory of Brain and Cognitive Science Institute of Biophysics graduate school Baiao Pharmaceuticals {2. C.L. The Chinese {3. of sciences 15 Da Tun Road Chao Yang District {2. 100101 China

＜正＞Earthworm has been used as a traditional medicine to treat clotting diseases in eastern countries for centuries. There are a group of fibrinolytic enzymes from the extract of an earthworm. EfP-Ⅲ-1 transporting through cellular membrane, we use the intestinal segments and found that about 10% EfP-Ⅲ-1 can transport through intestinal epithelium and remain some activity. Caco-2.monolayer cells model was employed to study the transport mechanism of EfP-Ⅲ-1. Results show that EfP-Ⅲ-1 can pass through the Caco-2.by the passive transcellular route. Measurements of transepithelial transport revealed an apparent

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A New Decomposition Algorithm for Training Bound-Constrained Support Vector Machines

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A New Decomposition Algorithm for Training Bound-Constrained...

第四届（2.09）中国管理学年会--系统管理与复杂性科学分会场

作者： Lingfeng NIU,Yong SHI CAS Research Center on Fictitious Economy & Data Science graduate school of Chinese {2. of Science

This work proposes a new decomposition algorithm for training bound-constrained Support Vector Machines. A new working set selection rule together with the global convergence based on this rule are given. In order to make the algorithm efficient in practice, projected gradient algorithm and interior point method are combined together to solve the quadratic subproblem. Numerical results on several public data sets validate the correctness and efficiency of the proposed algorithm.

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Accelerating column leaching trial on copper sulfide ore

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Rare Metals 2008年第1期27卷 95-100页

作者： WANG Hongjiang WU Aixiang ZHOU Xun WANG Shaoyong ZHANG Jie Civil and Environment Engineering school University of Science and Technology Beifing Beifing 100083 China school of Resource and Safety Engineering Central South University Changsha 410083 China

The main measures to accelerate leaching sulfide ore are large spraying intensity,manual oxygen supply,temperature control,and acclimated *** indoor experiment accelerating sulfide ore leaching detected the temperature during leaching process,dissolvability of oxygen,bacterial concentration,Cu concentration and slag *** the same time,this paper also analyzed the effect of four factors,which are bacterial diversity cultivation stage,spraying intensity,air supply,and whether to control temperature,on the leaching efficiency of *** results indicate that the oxygen content of leach solution has a close relationship with temperature but it is rarely affected by air *** bacterial concentration preserves from 106 to 107 mL^-1,and temperature has a great effect on the bacterial activity under the condition of proper temperature and oxygen supply,and the lack of nutrition prevents the bacterial concentration from rising in the late *** relationships of the copper leaching efficiency to temperature,air feed,and spraying intensity are directly *** leaching efficiencies of the cultivated bacteria and acclimation bacteria are 1.2.and 1.4 times as large as that of the original bacteria.

关键词： accelerating leaching spraying intensity manual air supply temperature control bacterial cultivation

Phytolith evidence for rice cultivation and spread in Mid-Late Neolithic archaeological sites in central North China

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Phytolith evidence for rice cultivation and spread in Mid-La...

中国科学院地质与地球物理研究所第十届(2.10年度)学术年会

作者： Jianping Zhang Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics,Chinese academy of sciences,P.O.Box 982.,{2. 10002.,China and {3. University of Chinese academy of sciences,{2. 100049,China Houyuan Lu,Naiqin Wu and Fengjiang Li,Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese academy of sciences,P.O.Box 982.,{2. 10002.,China Xiaoyan Yang,Institute of Geographic sciences and Natural Resources Research,Chinese academy of sciences,{2. 100101,China Weilin Wang and Mingzhi Ma,Shaanxi Provincial Institute of Archaeology,Xi’an 710001,China Xiaohu Zhang,College of Urban and Environmental sciences,Peking University,{2. 100871,China

The history of rice(Oryza sativa) cultivation in North China is ambiguous owing to a lack of evidence from rice remains with precise ages in archaeological *** this paper,we present rice phytolith evidence from six archaeological sites in the Guanzhong Basin,central North China,dating from c.5500 to 2.00 cal.a BP(calibrated/ calendar ages) based on 19 *** phytoliths found in the three archaeological sites located on the second river terrace(Quanhu,Yangguanzhai and Anban) include three types of phytoliths from rice,namely bulliform, parallel-bilobe and *** findings suggest that the earliest cultivated rice in central North China occurred not later than c.5690 cal.a *** c.5500 cal.a BP,the farming pattern in the Guanzhong Basin was characterized by dominant dry crops(***) and locally cultivated rice.A likely spread route of rice from the lower reaches of the Huanghe(Yellow) River towards the Guanzhong Basin in central North China is speculated to have happened at c.5690 cal.a *** findings of this study help us to understand the farming pattern in the area and how rice spread across the semi-arid regions of East Asia.

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The Isovector Channel of the Energy Density Functional

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The Isovector Channel of the Energy Density Functional

第十三届全国核结构研讨会暨第九次全国“核结构与量子力学”专题讨论会

作者： Xiaobao Wang~1 Chong Qi~2.Furong Xu~(1,3. 1 school of Physics,and State Key Laboratory of Nuclear Physics and Technology,Peking University,{2. 100871,China 2.KTH,Alba Nova University Center,SE-10691 Stockholm,Sweden. 3.Center for Theoretical Nuclear Physics,National Laboratory for Heavy Ion Physics,Lanzhou 73.000,China

Both relativistic and non-relativistic energy density functional models have been widely used in describing the nuclear many-body *** calculations show that both relativistic and non-relativistic models give quite similar results for the ground state properties and low-energy dynamics of stable ***,significant differences are found when calculations go to the extreme cases of high isospin and high *** origin of these differences is still not *** non-relativistic Skyrme-Hartree-Fock (SHF) model has been extensively employed in the investigation of nuclear structure since the first work of Vautherin and *** 1970s,almost at the same time as SHF,the Relativistic-Mean-Field(RMF) model was developed to give a competitive description of finite *** relativistic Quark-Meson-Coupling model(QMC) was proposed by ***,the Hartree approximation is usually used in both RMF and QMC *** real treatment of the Fock term remains *** comparisons between relativistic models within the non-relativistic Hartree-Fock approximation and the Skyrme model can be instructive in clearing the *** this work,we compare the non-relativistic approximations of the QMC and RMF models and SHF models,with focusing on possible *** list the QMC energy density functional within the Hartree-Fock approximation and make comparison with RMF and Skyrme *** find that the discrepancy of these models is mainly caused by the isovector channel of the energy density functional.A new Skyrme parametrization is obtained by the *** also give the calculation results of the new parametrization.

关键词： energy density functional non-relativistic approximation Skyrme parametrization

Targeted Thrombolytic Liposomes

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Journal of Chinese Pharmaceutical sciences 2003年第3期12卷 171-172页

作者： WANG Xiang tao, HOU Xin pu(Department of Pharmacy, school of Pharmaceutical sciences, Peking University, {2. 100083. China) Department of Pharmacy School of Pharmaceutical Sciences Peking University Beijing 100083 China

Because of various thrombolytic agents now available associated with low thrombolytic specificity, large dose required for clinical treatment, and perplexing side effect of hemorrhage, we studied the thrombus-targeted... 详细信息

关键词： thrombolysis thrombus targeted liposomes RGDS urokinase

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IP/WDM网络中的光突发交换技术

铁道学报 2002年第5期24卷 76-79页

作者：周虚孙强北京邮电大学电信工程学院北京100876 北方交通大学电子信息工程学院北京100044

对光突发交换(OBS)技术的一些基本概念作了简述,并对其在因特网主干部分中的应用作了详细描述,给出了可行的网络结构和核心节点的设计。

关键词： IP/WDM网络光突发交换技术因特网主干部分核心节点 OBS 数据通信

The Boiler Tube Wall Thickness Quantitative Evaluation Fusing the Magnetic and Ultrasonic Technique

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武汉理工大学学报 2006年第S3期28卷 800-804页

作者： SONG Xiaochun~(1,2. HUANG Songling~2.ZHAO Daxing~1 (1.school of Mechanical Engineering,Hubei University of Technology,Wuhan 43.068,China, 2.State Key Lab ef Power Systems,Department of Electrical Engineering,Tsinghua University,{2. 100084,China) school of Mechanical Engineering Hubei University of TechnologyWuhan 430068China State Key Lab of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China State Key Lab of Power Systems Department of Electrical EngineeringTsinghua UniversityBeijing 100084China school of Mechanical Engineering Hubei University of TechnologyWuhan 430068China

Wall thickness is always a key index for boiler tube inspection in power plant,in order to improve the inspection efficiency and accuracy,a new method fusing the magnetic and ultrasonic technique was *** magnetic technique was used to do full inspection and locate the flaws,and the ultrasonic was employed to implement further quantitative inspection accu- *** comparing the precision of the polynomial,exponential and logarithmic function,the polynomial model was selected to fit the relations between the wall thickness and the peak value of magnetic signals,and the data measured by ultrasonic thickness meter was used to calibrate the model parameters online,the defect depth can be sized *** experimental results demon- grate that the model used in this system has better accuracy than the statistics relation model clearly,and it is also suitable for defect evaluation ***,it is unnecessary to have much more experimental data for the curve fitting technology,so it has better practicability than the other methods.

关键词： boiler tube main magnetic flux ultrasonic non-destructive testing