检索结果-南通市图书馆

Cell Iines from diamondback moth exhibiting differential susceptibility to baculovirus infection and expressing midgut genes

引用

Insect Science 2019年第2期26卷 251-262页

作者： Xiao-Li Ma wei-Yi He ping Wang Min-sheng You State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Fujian Agriculture and Forestry University Fuzhou China Fujian -Taiwan Joint Centre for Ecological Control of Crop Pests Fujian Agriculture and Forestry University Fuzhou China Key Laboratory of Integrated Pest Management for Fujian-Taiwan Crops Ministry of Agriculture Fujian Agriculture and Forestry University Fuzhou China Institute of Applied Ecology Fujian Agriculture and Forestry University Fuzhou China Department of Entomology Cornell University Geneva NY USA

Abstract Six new cell lines were established from embryonic tissues of the diamondback moth, Plutella xylostella (L.). The cell lines showed differential characteristics, including growth in attachment or in suspension, susceptibility to a baculovirus infection and expression of genes involved in the glucosinolate detoxification pathway in R xylostella larvae. Five of the cell lines grew attached to the culture flask and one cell line grew unattached as a suspension cell line. The cell lines had population doubling times ranging from IS to 23 h. Among five of the P. xylostella cell lines examined for infection of a nucleopolyhe. drovirus from Autographa californica, AcMNPV four cell lines were highly susceptible to AcMNPV infection, but one was only semi-permissive to AcMNPV infection. The production of two recombinant proteins, a β-galactosidase of bacterial origin and a secreted alkaline phosphatase of eukaryotic origin, in the R xylostella cell lines was examined in comparison with that in the cell line Sf9 which is commonly used for recombinant protein production. In the P. xylostella cell lines, expression of three important midgut genes involved in the glucosinolate detoxification pathway, including the glucosinolate sulfatase genes GSS1 and GSS2 and the sulfatase modifying factor gene SUMF1、was detected. The R xylostella cell lines developed in this study could be useful in in vitro research systems for studying insec-virus interactions and complex molecular mechanisms in glucosinolate detoxification and insect-plant interactions.

关键词： AcMNPV cell lines glucosinolate sulfatase (GSS) Plutella xylostella PxGV sulfatase modifying factor 1 (SUMF1)

来源：

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

An efficient data layout scheme for better I/O balancing in RAID-6 storage systems

引用

Frontiers of Information Technology & Electronic Engineering 2015年第5期16卷 335-345页

作者： ping XIE Jian-zhong HUANG Er-wei DAI Qiang CAO Chang-sheng XIE Wuhan National Laboratory for Opto Electronics Huazhong University of Science & Technology Computer College Qinghai Normal University

Among redundant arrays of independent disks(RAID)-6 codes, maximum distance separable(MDS)based RAID-6 codes are popular because they have the optimal storage efficiency. Although vertical MDS codes exhibit better load balancing compared to horizontal MDS codes in partial stripes, an I/O unbalancing problem still exists in some vertical codes. To address this issue, we propose a novel efficient data layout, uniform P-code(UPC), to support highly balanced I/Os among P-coded disk arrays(i.e., PC). In UPC, the nonuniformly distributed information symbols in each parity chain of P-code are moved along their columns to other rows, thus enabling the parity chain to keep original parity relationships and tolerate double disk failures. The UPC scheme not only achieves optimal storage efficiency, computational complexity, and update complexity, but also supports better I/O balancing in the context of large-scale storage systems. We also conduct a performance study on reconstruction algorithms using an analytical model. Besides extensive theoretical analysis, comparative performance experiments are conducted by replaying real-world workloads under various configurations. Experimental results illustrate that our UPC scheme significantly outperforms the PC scheme in terms of average user response time. In particular, in the case of a 12-disk array, the UPC scheme can improve the access performance of the RAID-6 storage system by29.9% compared to the PC scheme.

关键词： RAID-6 Data availability High performance I/O balancing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Natural resource dependence, public education investment,and human capital accumulation

引用

Petroleum Science 2018年第3期15卷 657-665页

作者： Hua-ping Sun wei-Feng Sun Yong Geng Yu-sheng Kong Institute of Industrial Economics Jiangsu University School of Environmental Science and Engineering Shanghai Jiao Tong University Department of Economics and Management Yuncheng University

This paper examines the relationships between natural resource dependence, public education investment, and human capital accumulation. It addresses why the “blessing” of abundant natural resources often turns into a “curse” in many countries and regions, focusing on the crowding-out effect of natural resources on human capital. According to our empirical analysis of provincial panel data from China, natural resource dependence is significantly and negatively correlated with human capital accumulation. The crowding-out effect of natural resources on human capital exists only in the central and western regions of China. Our introduction of an interaction term for natural resource dependence and public education investment underscores the possibility of investing in public education to reduce the crowding-out effect of natural resource dependence on human capital. The government should utilize the income of the natural resource sector to increase investment in education to enhance local human capital.

关键词： Natural resource dependence Public education investment Human capital accumulation Resource curse

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of increasing service life of epoxy zinc-rich coating on 3 wt.%Ni-advanced low-alloy steel in marine atmospheric environment

引用

Journal of Iron and Steel Research International 2022年第4期29卷 698-706页

作者： sheng-rong Wang Jian-wei Yang Jian-ping Cao Shan Jiang Fei-fan Xu Shougang Research Institute of Technology of Shougang Group Co. Ltd.Beijing 100043China Beijing Key Laboratory of Green Recyclable Process for Iron&Steel Production Technology Beijing 100043China

The addition of Ni element into steel to prolong the service life of coated steel was investigated in marine atmospheric environment by laboratory simulated accelerated *** scanning electron microscope and electron probe microanalysis combined with electrochemical impedance spectroscopy were used to characterize coated steel properties and examined the anti-corrosion *** results showed that 3 wt.%Ni-advanced steel(3Ni steel)substrate obviously delayed the failure time of coating compared to carbon steel,therefore prolonging the service life of coating on the steel.X-ray diffraction patterns for the corrosion products under the scratched coating on 3Ni steel exhibited that FeNi_(2)O_(4) and Fe_(2)O_(3) occurred in the corrosion product of 3Ni *** was also found that Ni element enriched in the product layer through analyzing the appearance and composition of corrosion products by electron probe *** ions were blocked out of product by the enrichment of Ni element in rust layer.

关键词： 3wt.% Ni-advanced low-alloy steel Coating failure Service life Corrosion product Marine atmosphere

来源：

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

A Focus on Interfaces

引用

Engineering 2021年第5期7卷 552-553页

作者： ping sheng Department of Physics The Hong Kong University of Science and TechnologyHong Kong 999077China

Interfaces define the *** is widely known that many interesting phenomena occur at the interfaces separating two homogeneous phases of *** this opinion piece,I wish to call attention to two recent developments that involve at least one *** first development is in desalination-a topic of practical importance in view of the steadily eroding global freshwater *** second development involves the use of hydrodynamic eigenmodes to not only determine the position of the hydrodynamic boundary in channel flows-a somewhat surprising proposition,since that position does not coincide with the solid/liquid interface-but also obtain an alternative perspective on thermal fluctuations and their linkage to hydrodynamic boundary conditions in a mesoscopic channel.

关键词： boundary linkage separating

来源：

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

Relationship between circulating irisin levels and overweight/obesity: A meta-analysis

引用

World Journal of Clinical Cases 2019年第12期7卷 1444-1455页

作者： Jue Jia Fan Yu wei-ping wei ping Yang Ren Zhang Yue sheng Yong-Qin Shi Affiliated Hospital of Jiangsu University Zhenjiang 212001 Jiangsu Province China Department of Library of Jiangsu University Zhenjiang 212001 Jiangsu Province China

BACKGROUND Currently, the findings about irisin as a novel myokine related to obesity are inconsistent in overweight/obese people. To our knowledge, no systematic analysis has been conducted to evaluate the relationship between irisin levels and overweight/obesity. AIM To evaluate the association between circulating irisin levels and overweight/obesity. METHODS The Cochrane Library, MEDLINE, SCOPUS, and the ISI Web of Science were searched to retrieve all of the studies associated with circulating irisin levels and overweight/obesity. Standard mean difference values and 95% confidence intervals (CI) were estimated and pooled using meta-analysis methodology. RESULTS A total of 18 studies were included in our meta-analysis containing 1005 cases and 1242 controls. Our analysis showed that the circulating irisin level in overweight/obese people was higher than that in overall healthy controls (random effects MD = 0.63;95%CI: 0.22-1.05;P = 0.003). In the subgroup analysis by ethnicity, the irisin level was higher in overweight/obesity people than that in controls in Africa (random effects MD = 3.41;95%CI: 1.23-5.59;P weight/obesity in predicting overweight/obesity.

关键词： Irisin Overweight/obesity Myokines Body mass index

来源：

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

Synthesis and electrochemical properties of spherically shaped LiVPO_(4)F/C cathode material by a spray drying-roasting method

引用

Rare Metals 2021年第1期40卷 72-77页

作者： Yu-Lei Sui Ling Wu wei Hong Jie-Qun Liu Xiao-ping Zhang wei Li sheng-Kui Zhong School of Iron and Steel Soochow University.Suzhou 215000China Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials Guilin University of TechnologyGuilin 541004China

LiVPO_(4) F has attracted increasing research interest in the field of Li-ion batteries due to its high working voltage platform and high theoretical energy ***,the construction of stable LiVPO_(4) F cathode material with excellent electrochemical properties is still a major ***,we successfully synthesized spherically shaped LiVPO_(4) F/C via a spray dryingroasting method.X-ray diffraction(XRD)and scanning electron microscopy(SEM)results indicate that the well crystallized LiVPO_(4) F/C with triclinic structure shows spherical morphology with an average diameter of 1-3μ*** spherically shaped LiVPO_(4) F/C delivers a discharge capacity of 137.9 mAh·g^(-1) at 0.1 C rate in the range of3.0-4.5 V and remains 91.4%capacity retention of its initial discharge capacity after 50 *** results reveal that spray drying-roasting method is a promising approach to synthesize spherically shaped LiVPO_(4) F/C cathode material with stable crystal structure and excellent performance.

关键词： Lithium-ion batteries Cathode materials LiVPO_(4)F/C Spray drying-roasting Electrical properties

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

龙胆泻肝汤加减联合氟轻松软膏治疗急性期湿疹42例

引用

河南中医 2021年第10期41卷 1564-1568页

作者：诸婧张金华余杨张喜军盛平卫上海市金山中西医结合医院上海201501

目的:观察龙胆泻肝汤加减联合氟轻松软膏治疗急性期湿疹的临床疗效。方法:将87例急性期湿疹患者按照随机数字表法分为治疗组42例和对照组45例。治疗组给予龙胆泻肝汤加减口服联合氟轻松软膏外涂治疗,对照组口服盐酸左西替利嗪联合氟轻... 详细信息

目的:观察龙胆泻肝汤加减联合氟轻松软膏治疗急性期湿疹的临床疗效。方法:将87例急性期湿疹患者按照随机数字表法分为治疗组42例和对照组45例。治疗组给予龙胆泻肝汤加减口服联合氟轻松软膏外涂治疗,对照组口服盐酸左西替利嗪联合氟轻松软膏外涂治疗。比较两组患者的临床疗效及治疗前后瘙痒程度、皮损面积、皮损形态(红斑、丘疹、水疱、糜烂、渗出、结痂)评分变化情况。结果:对照组有效率为66.67%,治疗组有效率为78.57%,两组患者有效率比较,差异具有统计学意义(P0.05)。两组患者治疗后瘙痒程度评分、皮损面积评分低于本组治疗前,差异具有统计学意义(P0.05)。结论:龙胆泻肝汤加减联合氟轻松软膏治疗急性期湿疹,可改善患者临床症状,在改善患者红斑、丘疹、水疱评分、减少皮损面积等方面疗效与盐酸左西替利嗪联合氟轻松软膏相当。

关键词：急性期湿疹龙胆泻肝汤氟轻松软膏盐酸左西替利嗪中西医结合疗法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanochemical model for myosinⅡdimer that can explain the spontaneous oscillatory contraction of muscle

引用

Chinese Physics B 2018年第11期27卷 641-648页

作者： wei Sun Xiao-Yang Zhao Jun-ping Zhang Tala wei-sheng Guo School of Physical Science and Technology Inner Mongolia University Hohhot 010021 China Department of Resource Engineering Ordos Vocational College Ordos 017000 China Department of Statistics and Mathematics Inner Mongolia University of Finance and Economics Hohhot 010070 Inner Mongolia Vocational College of Chemical Engineering Hohhot 010070 China

The spontaneous oscillatory contraction（SPOC） of myofibrils is the essential property inherent to the contractile system of muscle. Muscle contraction results from cyclic interactions between actin filament and myosin II which is a dimeric motor protein with two heads. Taking the two heads of myosin II as an indivisible element and considering the effects of cooperative behavior between the two heads on rate constants in the mechanochemical cycle, the present work proposes the tenstate mechanochemical cycle model for myosin II dimer. The simulations of this model show that the proportion of myosin II in different states periodically changes with time, which results in the sustained oscillations of contractive tension, and serves as the primary factor for SPOC. The good fit of this model to experimental results suggests that the cooperative interaction between the two heads of myosin II dimer may be one of the underlying mechanisms for muscle contraction.

关键词： muscle contraction spontaneous oscillatory contraction (SPOC) mechanochemical cycle cooperative behavior

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of different portal vein branches on hepatic encephalopathy during intrahepatic portal shunt via jugular vein

引用

World Journal of Gastroenterology 2022年第31期28卷 4467-4470页

作者： Xin Yao sheng He Meng wei Jian-ping Qin Department of Gastroenterology General Hospital of Western Theater CommandChengdu 610083Sichuan ProvinceChina

This letter is regarding the study titled‘Targeted puncture of left branch of intrahepatic portal vein in transjugular intrahepatic portosystemic shunt(TIPS)to reduce hepatic encephalopathy’.Prior to the approval of TIPS dedicated stents(Viatorr stents)in China in October 2015,Fluency covered stents were typically *** Fluency covered stents have a strong support force and axial elastic tension,a‘cap’may form if the stent is located too low at the end of the hepatic vein or too short at the end of the portal vein during surgery,leading to stent *** the blood shunted by the stent is from the main trunk of the portal vein,the correlation between the incidence of postoperative hepatic encephalopathy and the location of the puncture target(left or right portal vein branch)is worth ***,no studies in China or foreign countries have proven the occurrence of left and right blood stratification after the accumulation of splenic vein and mesenteric blood flow in the main trunk of the portal vein in patients with cirrhotic portal hypertension.

关键词： Viatorr stent Portosystemic shunt Transjugular intrahepatic Hypertension portal Left and right portal vein branches

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：