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我国住房保障政策公平性的缺失

城市问题 2007年第11期 67-70页

作者：梁绍连杜德斌华东师范大学城市与区域经济系

研究了我国住房保障政策的公平性问题。认为目前实施的住房保障政策存在政策覆盖面公平性缺失、政策目标对象偏离和扩大贫富差距等问题。在此基础上,从政策设计、住房建设、资格审核和住房管理等方面对公平性问题的产生原因进行了深入探... 详细信息

研究了我国住房保障政策的公平性问题。认为目前实施的住房保障政策存在政策覆盖面公平性缺失、政策目标对象偏离和扩大贫富差距等问题。在此基础上,从政策设计、住房建设、资格审核和住房管理等方面对公平性问题的产生原因进行了深入探讨,并提出了保障公平的政策建议。

关键词：经济适用房廉租房住房保障

Highly efficient expression of human extracellular superoxide dismutase(rhEcSOD)with ultraviolet-B-induced damage-resistance activity in transgenic silkworm cocoons

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Insect Science 2024年第4期31卷 1150-1164页

作者： Feng Wang Ri-Yuan Wang de-bin Zhong Ping Zhao Qing-You Xia Integrative Science Center of Germplasm Creation in Western China(CHONGQING)Science City Biological Science Research CenterSouthwest UniversityChongqingChina Century Legend Biotechnology Research Institute(Chongqing)Co. Ltd.ChongqingChina

Extracellular superoxide dismutase(EcSOD)protects tissues from oxidative stress,and thus is considered as a therapeutic agent for many diseases such as atherosclerosis,hypertension,and ***,cost-effective production of bioactive recombinant human EcSOD(rhEcSOD)remains a ***,we developed an efficient strategy for producing active rhEcSOD by transgenic *** was successfully synthesized as homodimers and homotetramers in the middle silk gland and spun into the cocoons with a concentration of 9.48±0.21 mg/*** of rhEcSOD from the cocoons could be conveniently achieved with a purity of 99.50%and a yield of 3.5±0.5 mg/***,N-glycosylation at the only site of N89 in rhEcSOD with 10 types were *** purified rhEcSOD gained the potent enzymatic activity of 4162±293 U/mg after Cu/Zn ions *** importantly,rhEcSOD was capable of penetrating and accumulating in the nuclei of cells to maintain cell morphology and attenuate ultraviolet B-induced cell apoptosis by eliminating reactive oxygen species and inhibiting the C-Jun N-terminal kinase signaling *** results demonstrated that the transgenic silkworm could successfully produce rhEcSOD with enzymatic and biological activities for biomedical applications.

关键词： antioxidant human extracellular superoxide dismutase recombinant expression silkworm silk gland

在华跨国公司研发投资的区位决定——基于省市数据的空间计量经济分析

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软科学 2010年第6期24卷 27-30,35页

作者：杜德斌张战仁华东师范大学中国现代城市研究中心上海200062

以省市为空间样本,采用空间计量经济学的方法,研究了跨国公司研发投资(RDI)的区位决定。结果发现,市场规模、市场竞争度、人才与研发基础设施以及跨国公司FDI流向、政策因素对RDI流入具有显著的正面影响。中国RDI区域分布具有空间依赖性... 详细信息

以省市为空间样本,采用空间计量经济学的方法,研究了跨国公司研发投资(RDI)的区位决定。结果发现,市场规模、市场竞争度、人才与研发基础设施以及跨国公司FDI流向、政策因素对RDI流入具有显著的正面影响。中国RDI区域分布具有空间依赖性,在省域空间尺度下,RDI的地理溢出对我国RDI区域分布严重不均衡的现象有影响,地方政府在制定改善我国引资结构的政策过程中,必须考虑到空间作用机制对跨国公司研发投资的异化影响。

关键词：研发投资跨国公司区位因素空间计量经济模型

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在华美、日跨国公司R&D投资区位的比较

人文地理 2007年第2期22卷 1-5页

作者：王承云杜德斌上海师范大学地理系上海200234 华东师范大学城市与区域经济系上海200062

美、日跨国公司从全球竞争战略出发,持续保持对中国的投资热,并一直高居我国第二和第三投资大国的地位。最近几年,为了充分利用我国现有的科技资源、降低新产品研发过程中的成本和风险,美、日跨国公司已经在中国有组织地安排科研机构。... 详细信息

美、日跨国公司从全球竞争战略出发,持续保持对中国的投资热,并一直高居我国第二和第三投资大国的地位。最近几年,为了充分利用我国现有的科技资源、降低新产品研发过程中的成本和风险,美、日跨国公司已经在中国有组织地安排科研机构。两国在中国R&D投资区位选择上既有明显的共性,但在微区位选择、投资行为上又存在明显的差异。本文通过对美、日跨国公司在中国R&D的投资区位的比较,提出我国应对海外R&D投资战略的建议和策略。

关键词：在华美日跨国公司 R&D投资比较

长三角科技资源配置能力与城市化进程的协调耦合关系研究

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统计与信息论坛 2013年第7期28卷 69-75页

作者：范斐杜德斌盛垒华东师范大学科技创新与发展战略研究中心上海200241 上海社会科学院港澳研究中心上海200020

科技资源配置能力已成为长江地区城市化进程的重要推力。因此,在构建科技资源与城市化耦合系统评价指标体系的基础上,利用耦合协调度模型综合评价长江区域科技资源配置与城市化的交互耦合关系。结果显示:从时间维度看,研究期内长三角科... 详细信息

科技资源配置能力已成为长江地区城市化进程的重要推力。因此,在构建科技资源与城市化耦合系统评价指标体系的基础上,利用耦合协调度模型综合评价长江区域科技资源配置与城市化的交互耦合关系。结果显示:从时间维度看,研究期内长三角科技资源配置能力与城市化进程之间的耦合关系基本上处于磨合阶段,耦合协调度以低度协调耦合状态为主并逐步过渡到中度协调耦合状态;从空间维度看,长三角各城市的科技资源配置与城市化耦合协调度在极度协调耦合、高度协调耦合、中度协调耦合、低度协调耦合四个阶段均有分布,层级分明且大部分城市尚处于低度协调耦合状态。

关键词：长三角科技资源配置城市化耦合协调度

Texture and Geochemistry of Multi-stage Hydrothermal Scheelite in the Mamupu Cu-Au-Mo(-W)deposit,Eastern Tibet:Implications for Tungsten Mineralization in the Yulong Belt

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 701-716页

作者： ZHANG Xiaoxu TANG Juxing LIN bin WANG Qin HE Liang YAN Gang SHAO Rui WU Qiang du Qiu ZHAXI Pingcuo Chengdu Center China Geological Survey(Geosciences Innovation Center of Southwest China)Chengdu 610081China MNR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China SinoProbe Laboratory Chinese Academy of Geological SciencesBeijing 100094China Earth Sciences College Chengdu University of TechnologyChengdu 610059China No.6 Geological Party Tibetan Bureau of Geology and Mineral Exploration and DevelopmentLhasa 851400China Tibet Shengyuan Mining Group Co. Ltd.Lhasa 851400China

Multistage tungsten mineralization was recently discovered in the Mamupu copper-polymetallic deposit in the southern Yulong porphyry copper belt(YPCB),*** study reports the results of cathodoluminescence,trace element and Sr isotope analyses of Mamupu scheelite samples,undertaken in order to better constrain the mechanism of W mineralization and the sources of the ore-forming *** different types of scheelite are identified in the Mamupu deposit:scheelite A(Sch A)mainly occurs in breccias during the prograde stage,scheelite B(Sch B)forms in the chlorite-epidote alteration zone in the retrograde stage,while scheelite C(Sch C)occurs in distal quartz sulfide *** extremely high Mo content and negative Eu anomaly in Sch A represent high oxygen fugacity in the prograde *** with ore-related porphyries,Sch A has a similar REE pattern,but with higher ΣREE,more depleted HREE and slightly lower(^(87)Sr/^(86)Sr)i *** features suggest that Sch A is genetically related to ore-related porphyries,but extensive interaction with carbonate surrounding rocks affects the final REE and Sr isotopic *** B shows dark(Sch B-I)and light(Sch B-II)domains under CL *** Sch B-I to Sch B-II,LREEs are gradually depleted,with MREEs being gradually *** C has the highest LREE/HREE ratio,which indicates that it inherited the geochemical characteristics of fluids after the precipitation of HREE-rich minerals,such as diopside and garnet,in the early prograde *** Mo content in Sch B and Sch C gradually decreased,indicating that the oxygen fugacity of the fluids changed from oxidative in the early stages to reductive in the later,the turbulent Eu anomaly in Sch B and Sch C indicating that the Eu anomaly in the Mamupu scheelite is not solely controlled by oxygen *** extensive interaction of magmatic-hydrothermal fluids and carbonate provides the necessary Ca^(2+)for the precipitation of scheelite in the Mamupu deposit.

关键词： scheelite geochemistry Mamupu Cu deposit Yulong porphyry copper belt eastern Tibet

Mitogenome-based phylogeny of mosquitoes(Diptera:Culicidae)

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Insect Science 2024年第2期31卷 599-612页

作者： de-Hong Chen Shu-Lin He Wen-Bo Fu Zhen-Tian Yan Yun-Jian Hu Huan Yuan Ming-bin Wang bin Chen Chongqing Key Laboratory of Vector Insects Institute of Entomology and Molecular BiologyChongqing Normal UniversityChongqingChina

Mosquitoes are of great medical significance as vectors of many deadly *** have been widely used in phylogenetic studies,but mitogenome knowledge within the family Culicidae is limited,and Culicidae phylogeny is far from *** this study,we surveyed the mitogenomes of 149 Culicidae species,including 7 newly sequenced *** analysis of 149 mosquito mitogenomes shows gene composition and order to be identical to that of an ancestral insect,and the AT bias,length variation,and codon usage are all consistent with that of other reported Dipteran *** analyses based on the DNA sequences of the 13 protein-coding genes from the 149 species robustly support the monophyly of the subfamily Anophelinae and the tribes Aedini,Culicini,Mansonini,Sabethini,and *** resolve ambiguous relationships between clades within the subfamily Culicinae,we performed topological tests and show that Aedini is a sister to Culicini and that Uranotaenini is a sister to(Mansonini)+(Toxorhynchitini+Sabethini).In addition,we estimated divergence times using a Bayesian relaxation clock based on the sequence data and 3 fossil calibration *** results show mosquitoes diverged during the Early Jurassic with massive Culicinae radiations during the Cretaceous,coincident with the emergence of angiosperms and the burst of mammals and ***,this study,which uses the largest number of Culicidae mitogenomes sequenced to date,comprehensively reveals the mitogenome characteristics and mitogenome-based phylogeny and divergence times of Culicidae,providing information for further studies on the mitogenome,phylogeny,evolution,and taxonomic revision of Culicidae.

关键词： characterization Culicidae evolution mitogenomes mosquitoes phylogeny

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跨国公司R&D全球化:地理学的视角

世界地理研究 2007年第4期16卷 106-114页

作者：杜德斌华东师范大学城市与区域经济系上海200062

近年来,跨国公司的R&D活动日益朝着国际化、全球化的方向发展,已成为学术界普遍关注的热点议题。本文总结了笔者近年来对跨国公司R&D全球化这一现象的研究成果及主要观点。这些研究主要集中在三个方面:跨国公司海外R&D机构的区位选择问... 详细信息

近年来,跨国公司的R&D活动日益朝着国际化、全球化的方向发展,已成为学术界普遍关注的热点议题。本文总结了笔者近年来对跨国公司R&D全球化这一现象的研究成果及主要观点。这些研究主要集中在三个方面:跨国公司海外R&D机构的区位选择问题、跨国公司R&D全球化的空间组织问题和跨国公司海外R&D活动的技术溢出问题。

关键词： R&D全球化跨国公司地理学

Complexity growth in a holographic QCD model

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Chinese Physics C 2024年第3期48卷 142-147页

作者：常文彬侯德富 Institute of Particle Physics and Key Laboratory of Quark and Lepton Physics(MOS) Central China Normal UniversityWuhan 430079China

In this study,we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical *** inserting a fundamental string as a probe,we investigated the properties of complexity growth in this Einstein-Maxwell-scalar gravity system,which is affected by the string velocity,chemical potential,and *** results show that the complexity growth is maximized when the probe string is stationary,and it decreases as the velocity of the string *** the string approaches relativistic velocities,the complexity growth always increases monotonically with respect to the chemical ***,we find that the complexity growth can be used to identify phase transitions and crossovers in the model.

关键词： AdS/CFT holographic QCD model complexity growth