280 research outputs found

    国内外水产加工研究动态

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    本文介绍了国内外水产品保鲜和保活技术研究、高新技术在水产加工业的应用、海洋生物活性物质的提取技术研究、海洋功能食品和海洋药物的开发研究动态

    乌市流动人口的素质下降问题及其对策研究

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    乌鲁木齐市作为新疆维吾尔自治区的首府城市,在“西部大开发战略”的指导下,发展势头十分迅猛。第二条亚欧大陆桥的开通,使乌

    Service Management System For Power and Automation Products Applications

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    售后服务管理系统是为企业提供从客户来电到客户档案查询、客户服务跟踪、维护维修记录、服务质量跟踪、内部工作协同的全程服务一体化管理系统。为企业提供一个高效统一的客户售后服务管理平台和内部服务质量跟踪的信息渠道。同时也能大力推动公司客户服务满意度,提高企业的服务水平和服务信息化综合管理水平。 本系统是生产电力和自动化方面产品、作为全球化运营的某公司,在当今竞争激烈的市场经济环境下,为了提升企业的竞争力,某公司在使用SAP(SystemsApplicationsandProductsinDataProcessing)和PDM(ProductDataManagement)等管理软件之后,又引进的针对...The after-sales service management system provides the management service for customer calling, customer file enquiry, customer service tracking, maintenance recording, service quality tracking, and internal department work coordination. It is also as an efficient customer after-sales service management platform and information channel for internal service quality tracking. It will improve the cus...学位:工程硕士院系专业:软件学院_工程硕士(软件工程)学号:X200623007

    移民如何运营老家?

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    A Study on the Trade Effect of the Implementation of CEPA

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    2004年1月1日,CEPA正式生效,标志着内地和香港两地的贸易发展进入了一个新阶段。作为中国入世后签署的第一份自由贸易法案,CEPA旨在减少或取消内地与香港间所有货物的关税和非关税壁垒,实现服务贸易自由化,促进投资便利化。CEPA的签署,标志着内地与香港的合作开始从以往的由民间推动,企业主导的松散型模式逐步向着由政府推动,双方协调发展的制度化建设模式转变,必然会对两地经济产生深远的影响。本文基于区域经济一体化理论,分析了香港和内地经贸现状,研究内地和香港两地的货物贸易和服务贸易的总体规模、贸易比重、贸易结构和贸易方式。本文从实证角度出发,运用巴拉萨模型,贸易开放度等工具,分析了CEPA自签署...On January 1, 2004, CEPA came into effect, marking the trade relationship between the Mainland and Hong Kong has entered a new stage. As China's first free trade bill after accession to the WTO, CEPA aims to reduce or cancel all the goods tariff and non-tariff barriers between the Mainland and Hong Kong, achieves liberalization of trade in services and promotes investment facilitation. The signing...学位:经济学硕士院系专业:经济学院国际贸易系_国际贸易学学号:2005130105

    东方管理思想适用性探析

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    东方管理学是以中华优秀传统管理文化为核心所创造的。它不仅造就已维持达两千多年之久的中华统一国家,而且对于现在,东方管理学作为一种高境界的管理智慧,对于改善组织的管理状况,提升组织的管理水平,也具有重要的实践意义

    Analyzing Energy-Labor substitution in Chinese Food Production_Based on Translog Production Function

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    摘要 粮食生产作为国民经济的基础,其安全保障问题直接关系到我国人民的正常生活和社会的稳定。然而随着我国工业化、城镇化进程的推进,在粮食生产过程中,数以亿计的农村劳动力正逐渐由农村向城镇转移,促使越来越多的农村劳动力流向非农业生产行业。“诱致性技术变迁”理论认为,相对丰富的生产要素将逐渐替代相对稀缺的生产要素,因此,农村劳动力的日益短缺或将引发其他生产要素替代。 为保障粮食生产的持续增长,一方面土地供给的无弹性缺陷可以由生物技术进步加以弥补,例如增加化肥、农药等要素投入;另一方面则可由机械技术进步加以解决,出现资本替代劳动的趋势,并推动农业机械化水平逐渐提高。然而无论是化肥农药还是机械农机,...ABSTRACT Agriculture is the basis of national economy and food production is the core of the basis, which means food security plays a significant role in people's life and social stability. However, as the accelerating process of industrialization and urbanization in China, millions of farmer workers migrated spontaneously from country to city, from agricultural section to non-agricultural sectio...学位:经济学硕士院系专业:经济学院_能源经济学学号:3132013115224

    Research and Implementation of the PHY Error Control Mechanism on Broadband Wireless Ad Hoc Network

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    无线自组织网是一组自治的无线节点相互协作而形成的独立于固定的基础设施并采用分布式管理的网络。由于它具有组网灵活、容易实现等优点,在军事通信、应急通信等方面有广阔的应用前景。宽带无线自组织网是一种无线通信和计算机网络相结合的网络,它的应用环境复杂,信道误码率高,数据传输速率高,实时性好,要求有较高的可靠性。因此相对于一般通信系统,有效的差错控制方案对于宽带无线自组织网而言显得更为重要。 CTC与Turbo码相比具有编码效率高,相同复杂度译码器下纠错性能好,译码迭代次数少,译码时延小等优点,同时消除了尾比特对译码性能的影响。文中通过仿真验证,得到译码迭代次数相同时,CTC的性能略优于Turbo码...Wireless Ad Hoc network is a kind of peer-to-peer network. With the advantages of network flexibility and easy realization, it has bright prospects in military communications, emergency communications, etc. Wireless Ad Hoc network incorporates wireless communications networks and computer networks. Compared with the general communication system, more effective error control scheme is required in b...学位:工学硕士院系专业:信息科学与技术学院通信工程系_通信与信息系统学号:2332007115218

    Study of small and medium-sized airport construction financing mode ——The case of Quanzhou airport Reconstruction and expansion financing mode

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    随着我国改革开放步伐的加快,社会经济的不断发展,人们对于乘坐交通工具方式的需求也在不断升级,民航飞机以安全性高、舒适性好、服务水平高、便捷性强等特点,使越来越多的人们开始选择民航飞机作为出行的方式,一般地,一个地方的经济越发达,其民航发展的速度也越快,泉州晋江机场近几年的发展得益于当地社会经济的快速发展,得益于航空市场的不断扩容,得益于各航空公司运力的不断投放增加了人们出行的选择性,然而随着时间的不断推移,泉州晋江机场的候机楼、停机坪、货运站、停车场均已出现或接近饱和,为此,泉州晋江机场已2007年就开始对机场的改扩建进行规划设计,争取在“十一五”期末,改扩建工程能够开工建设。根据《泉州晋江机...As the increasing speed of China's reform and opening-up, economic and social development, people are also escalating the demand of transportation mode. Civil aviation aircrafts are good at high safety, comfort, high service level, well convenience, and so on. Therefore, more and more people choose to travel with civil aviation aircrafts. Generally, if a place has good developed of economy, its de...学位:工商管理硕士院系专业:管理学院工商管理教育中心(MBA中心)_工商管理硕士(MBA)学号:x200615512

    pJAK2 polypeptide,an antagonist of suppressors of cytokine signaling-1,can enhance the antitumor effect of dendritic cells

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    目的:探讨细胞因子信号转导抑制因子-1(SuPPrESSOrS Of CyTOkInE SIgnAlIng1,SOCS1)拮抗物PJAk2多肽(氨基酸序列号为1001-1013)参与树突状细胞(dEndrITIC CEllS,dCS)的体外诱导培养后对dCS抗肿瘤作用的影响。方法:采集健康人外周血,离心获得单个核细胞,用重组人粒细胞巨噬细胞集落刺激因子(rECOMbInAnT HuMAn grAnulOCyTE-MACrOPHAgE COlOny STIMulATIng fACTOr,rHgM-CSf)及重组人白细胞介素-4(rECOMbInAnT HuMAn InTErlEukIn-4,rHIl-4)诱导dCS,第5天分为4组:单纯dCS培养(对照)组、抗原负载(lySATE-dCS)组、多肽修饰(PJAk2-dCS)组和抗原与多肽共培养(lySATE+PJAk2-dCS)组,第6天各组加入肿瘤坏死因子-α(TuMOr nECrOSIS fACTOr-AlPHA,Tnf-α)促成熟。倒置显微镜下观察dCS形态;fCM法检测dCS表型;乳酸脱氢酶(lACTATE dEHydrOgEnASE,ldH)细胞毒实验检测各组细胞毒性T淋巴细胞(CyTOTOXIC T lyMPHOCyTE,CTl)对胃癌细胞bgC-823的靶向杀伤作用;ElISA法检测白细胞介素-12(InTErlEukIn-12,Il-12)和γ干扰素(InTErfErOn-γ,Ifn-γ)的水平。结果:与未加入诱导剂组相比,各组均成功诱导出成熟dCS,均高表达Cd80、Cd83、Cd86和人类白细胞dr抗原(HuMAn lEukOCyTE AnTIgEn dr,HlA-dr),但以lySATE+PJAk2-dCS组的表达水平最高。在10:1~30:1的效靶比范围内,CTl杀伤作用与效靶比呈正相关。当效靶比为30:1时,对照组的CTl杀伤率达(19.77±2.34)%,低于其他3组(P<0.01),而lySATE+PJAk2-dCS组较lySATE-dCS组及PJAk2-dCS组都高(P<0.05)。lySATE+PJAk2-dCS组培养上清液中Il-12及Ifn-γ的分泌水平明显高于对照组(P<0.01)。结论:SOCS1拮抗物PJAk2多肽(1001-1013)可增强dCS对胃癌细胞的抗原递呈及特异性抗肿瘤作用。Objective:To investigate the effect of pJAK2 polypeptide,an antagonist of SOCS1(suppressors of cytokine signaling 1),on antitumor effect of in vitro cultivation-induced DCs(dendritic cells).Methods:Peripheral blood was collected from the healthy volunteers,and the PBMCs(peripheral blood mononuclear cells)were isolated.DCs were induced by rhGM-CSF(recombinant human granulocyte-macrophage colony-stimulating factor)and rhIL-4(recombinant human interleukin-4).On the fifth day,DCs were divided into four groups:control group,Lysate-DCs group,pJAK2-DCs group,and Lysate + pJAK2 DCs group.On the sixth day,TNF-α(tumor necrosis factor-alpha)was added into each group.The morphological features of DCs were observed under an inverted microscope;the phenotypes were detected by FCM(flow cytometry);the killing effect of CTLs(cytotoxic T lymphocytes)on gastric cancer BGC-823 cells was evaluated by LDH(lactate dehydrogenase)cytotoxicity test;the concentrations of IL-12(interleukin-12)and IFN-γ(interferon-γ)were detected by ELISA(enzyme-linked immuno sorbent assay).Results:Mature DCs presented typically morphological and phenotypic features;the DCs in Lysate + pJAK2-DCs group had the highest expression levels of CD80,CD83,CD86 and HLA-DR(human leukocyte antigen DR).When the ratio of effectors to target cells ranged from 10:1 to 30:1,the killing activity of CTLs had a positive correlation with the ratio.When the ratio of effectors to target cells was 30:1,the killing activity of CTLs in the control group was(19.77±2.34)%,which was lowest as compared with the other groups(P < 0.01),meanwhile the killing activity of CTLs in Lysate + pJAK2-DCs group was higher than those in Lysate-DCs and pJAK2-DCs groups(P < 0.05).The levels of IL-12 and IFN-γ secretion in Lysate + pJAK2-DCs group were apparently higher than those in the control group(P < 0.01).Conclusion:An antagonist of SOCS1,pJAK2 polypeptide,can enhance the ability of antigen presentation and specific antitumor effect of DCs on gastric cancer cells.南京军区医学科技创新课题资助项目(编号:10MA068); 福建省自然科学基金面上项目(编号:2010D013); 厦门市科技计划创新项目(编号:3502z20104014
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