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网络直播犯罪的侦查治理研究

江西警察学院学报 2024年第3期 47-55页

作者：郑海王慧如李愫西南政法大学重庆401120

网络直播已经成为满足民众精神文化需求的重要渠道。但是伴随出现的网络直播犯罪严重危害直播行业的健康发展。作为网络犯罪的重要形式,其呈现出数罪合流形成复杂聚合力、多目的驱使下的人际掩护、合法直播光环下的犯罪植入、打破时空... 详细信息

网络直播已经成为满足民众精神文化需求的重要渠道。但是伴随出现的网络直播犯罪严重危害直播行业的健康发展。作为网络犯罪的重要形式,其呈现出数罪合流形成复杂聚合力、多目的驱使下的人际掩护、合法直播光环下的犯罪植入、打破时空限制的多点扩散和商业化运作下的犯罪组织架构等行为特征,使得侦查工作陷入犯罪发现难,侦查取证难以及侦查成本高的现实困境。为此,应以网络直播犯罪的侦查治理为切入点,提高其侦查效能。

关键词：网络直播犯罪侦查治理大数据侦查

三七总皂苷抑制小鼠星形胶质细胞活化缓解完全弗氏佐剂所致炎性痛

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解剖学报 2024年第1期55卷 25-31页

作者：袁蕾杨智伟杨惠刘政海何洁万炜海南省热带脑科学研究与转化重点实验室海口571199 赣州市人民医院病理科江西赣州341000 南华大学衡阳医学院应用解剖学与生殖医学研究所湖南衡阳421001 海南医学院病理学教研室海口571199

目的探讨三七总皂苷(PNS)对完全弗氏佐剂(CFA)所致慢性炎性疼痛小鼠模型的镇痛作用及可能机制。方法48只C57BL/6J雄性小鼠随机分成生理盐水对照组(Ctrl)、CFA组(CFA)、CFA+PNS组、CFA+地塞米松(DEX)组(CFA+DEX)。采用Von Frey纤维丝检... 详细信息

目的探讨三七总皂苷(PNS)对完全弗氏佐剂(CFA)所致慢性炎性疼痛小鼠模型的镇痛作用及可能机制。方法48只C57BL/6J雄性小鼠随机分成生理盐水对照组(Ctrl)、CFA组(CFA)、CFA+PNS组、CFA+地塞米松(DEX)组(CFA+DEX)。采用Von Frey纤维丝检测小鼠机械疼痛;采用免疫组织化学法检测脊髓后角胶质纤维酸性蛋白(GFAP)阳性星形胶质细胞数目和形态结构变化;采用Western blotting检测各组小鼠相应节段脊髓GFAP、核苷酸结合寡聚化结构域(NOD)样受体热蛋白结构域相关蛋白3(NLRP3)、凋亡相关斑点样蛋白(ASC)、Caspase-1、白细胞介素(IL)-1β和IL-18的表达。结果与Ctrl组相比,CFA组小鼠机械痛阈值在第1、3、5、7、14天明显下降,小鼠脊髓NLRP3、ASC、Caspase-1、IL-1β和IL-18的表达均显著增加。PNS干预可缓解模型小鼠机械痛觉,下调小鼠脊髓NLRP3、ASC、Caspase-1、IL-1β和IL-18的表达,且与CFA+DEX组表达差异无显著性。免疫组织化学结果显示,与Ctrl组相比,CFA组小鼠脊髓后角GFAP阳性细胞数目显著增多;PNS干预后CFA+PNS组小鼠脊髓后角GFAP阳性细胞数目减少;DEX干预后对小鼠脊髓后角GFAP阳性细胞数目没有明显影响。Western blotting结果显示,与Ctrl组相比,CFA组小鼠脊髓GFAP表达明显增加;PNS干预后CFA+PNS组小鼠脊髓GFAP表达明显减少,DEX干预后对小鼠脊髓后角GFAP表达没有明显影响。结论PNS对炎性痛具有较好的缓解作用,其机制可能与抑制星形胶质细胞活化以及减少NLRP3炎性小体激活有关。

关键词：三七总皂苷星形胶质细胞炎性痛核苷酸结合寡聚化结构域样受体热蛋白结构域相关蛋白3 免疫组织化学免疫印迹法小鼠

A review on liquid sloshing hydrodynamics

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Journal of Hydrodynamics 2021年第6期33卷 1089-1104页

作者： Jin-hai zheng Mi-An Xue Peng Dou Yu-meng He Key Laboratory of Coastal Disaster and Protection of Ministry of Education Hohai UniversityNanjing 210024China College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210024China

Liquid sloshing in tanks is a very complex nonlinear free surface fluid flow problem,which must be considered in most of the marine engineering problems such as naval architecture,offshore engineering and so *** liquid sloshing in large containers can damage the tank structure due to the direct liquid impacting *** also affects the capsizing process of the liquid cargo *** works on mitigating sloshing by using all kinds of the baffles were thus followed with *** layers with thinner thickness were shown to reduce the sloshing load of water in *** sloshing characteristics in tanks with different sizes were different,therefore,scaling effect of sloshing should also be *** in a tank can also be used as tuned liquid dampers(TLDs)to dampen wind,wave and flow-induced motions of floating or fixed marine *** paper present an overview on recent advances of liquid sloshing hydrodynamics including sloshing mitigation by using anti-sloshing baffle,layered fluids sloshing,scaling effect of sloshing and TLDs.

关键词： Sloshing mitigation layered fluids sloshing scaling effect of sloshing tuned liquid damper

Electron Communication Between Electrode and Dye-Linked L-Proline Dehydrogenase in Organized Layer-by-Layer Multilayer Film

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Chemical Research in Chinese Universities 2009年第4期25卷 550-555页

作者： zheng hai-tao DONG Li-ping LIU hai-hui JIA hai-lian SUYE Shin-ichiro School of Material Science and Chemical Engineering Tianjin Polytechnic University Tianjin 300160 P. R. China Department of Applied Chemistry and Biotechnology Graduate School of Engineering University of Fukui Fukui 910-8507 Japan

Multilayer film was fabricated on an electrode surface by alternate layer-by-layer（LBL） adsorption of polycationic redox polymer（PEI-Fc） and dye-linked L-proline dehydrogenase（L-proDH）.The electrochemistry of the PEI-Fc/L-proDH multilayer modified electrode was investigated by cyclic voltammetry,and the enzyme catalysis mediated by the redox polymer was studied in a solution containing *** was observed that electron communication between L-proDH and the electrode was achieved with the help of PEI-Fc.A mathematical expression for the current response was evaluated based on the Michaelis-Menten kinetics mode,and the calculated currents fitted well with the experimental *** kinetic analysis indicates that only a small fraction of the immobilized enzyme was efficiently electrically wired by the redox polymer.

关键词： Electron communication Dye-linked L-proline dehydrogenase Layer-by-layer adsorption Electrode kinetic

Message redundancy removal of multi-copy routing in delay tolerant MANET

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The Journal of China Universities of Posts and Telecommunications 2011年第1期18卷 42-48页

作者： YU hai-zheng MA Jian-feng BIAN Hong Key Laboratory of Computer Network and Information Security Xidian University Xi'an 710071 China College of Mathematics and System Sciences Xinjiang University Urumqi 830046 China School of Mathematical Sciences Xinjiang Normal University Urumqi 830054 China

This article puts forward a new scheme to control message redundancy efficiently in delay tolerant mobile Ad-hoc networks （MANET）. The class of networks generally lacks end-to-end connectivity. In order to improve the efficiency that messages are delivered successfully, multiple message copies routing protocols are usually used, but the network load is increased due to a large number of message redundancies. In the study, by using counter method, every node adds an encounter counter based on epidemic routing scheme. The counter records the number which the node encounters other nodes with the same message copy. If the counter of a node reaches tbe installed threshold, the node removes the copy. Theoretical analysis gives a lower bound of threshold in delay tolerant MANET. According to the lower bound of threshold, a rational threshold is installed in real environment. With proposed scheme message copies decrease obviously and are removed completely finally. The successful delivery efficiency is still the same as epidemic routing and the redundant copies are efficiently controlled to a relatively low level Computer simulations give the variation of message copies concerning different thresholds in fast and slow mobility scenes.

关键词： delay tolerant networks mobile Ad-hoc networks message routing redundancy removal

异育银鲫'中科5号'产消化酶益生菌的筛选、鉴定及生物学特性研究

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农业生物技术学报 2024年第8期32卷 1878-1889页

作者：于鹏马晶晶成钰张成硕王凯周正海江苏沿海地区农业科学研究所江苏正源创辉农业科技发展有限公司

鱼类对饲料的低消化吸收率是造成饲料成本高昂、养殖利润低下的重要原因。异育银鲫（Carassius auratus gibelio）是我国当前最主要的鲫鱼养殖品种，本研究旨在从异育银鲫'中科5号'（CASⅤ）健康养殖体系中筛选出安全高效的产消化酶益... 详细信息

鱼类对饲料的低消化吸收率是造成饲料成本高昂、养殖利润低下的重要原因。异育银鲫（Carassius auratus gibelio）是我国当前最主要的鲫鱼养殖品种，本研究旨在从异育银鲫'中科5号'（CASⅤ）健康养殖体系中筛选出安全高效的产消化酶益生菌，从而改善“中科5号”对饲料的消化吸收能力，降低饲料成本。采用点种法从'中科5号'幼体及养殖水体中分离筛选出10株具有蛋白酶、脂肪酶和淀粉酶活性的菌株。对该10株菌的产酶能力进一步分析，并综合安全性（溶血性,药敏性和腹腔注射感染）试验结果，获得2株高效、无溶血性、对多数抗生素敏感且无致病性的菌株ZKW7和ZKF17。经16S rDNA序列分析，该2株菌均与枯草芽胞杆菌（Bacillus subtilis）和耐盐芽胞杆菌（B. halotolerans）具有最高的相似性。生物学特性分析结果显示，菌株ZKW7和ZKF17对氨氮（NH4+）、亚硝酸氮（NO2-）和硝酸氮（NO3-）具有较强的降解活性；2株菌生长规律相似，6～16 h为对数生长期，菌株ZKW7的最适生长p H、盐度和金属离子分别是8、15和Fe2+，而菌株ZKF17在pH 7、盐度10～30以及Mg2+存在的条件下生长最好；此外，该2株菌均具有一定的耐酸性、耐胆盐、耐肠液和耐胃液的特点。本研究筛选获得的2株安全、高效的产酶芽胞杆菌，可以作为异育银鲫“中科5号”的潜在益生菌。

关键词：异育银鲫产酶菌安全性生物学特性

Fault-tolerant Concave Facility Location Problem with Uniform Requirements

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Acta Mathematicae Applicatae Sinica 2012年第3期28卷 475-484页

作者： Xing WANG Da-Chuan XU zheng-hai HUANG Department of Mathematics School of ScienceTianjin UniversityTianjin 300072China Department of Applied Mathematics Beijing University of TechnologyBeijing 100124China

In this paper, we consider the fault-tolerant concave facility location problem （FTCFL） with uniform requirements. By investigating the structure of the FTCFL, we obtain a modified dual-fitting bifactor approximation algorithm. Combining the scaling and greedy argumentation technique, the approximation factor is proved to be 1.52.

关键词： approximation algorithm facility location problem dual-fitting

A Fixed Point Method for the Linear Complementarity Problem Arising from American Option Pricing

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Acta Mathematicae Applicatae Sinica 2016年第4期32卷 921-932页

作者： Xian-Jun SHI Lei YANG zheng-hai HUANG Department of Mathematics School of ScienceTianjin University

For American option pricing, the Black-Scholes-Merton model can be discretized as a linear comple- mentarity problem （LCP） by using some finite difference schemes. It is well known that the Projected Successive Over Relaxation （PSOR） has been widely applied to solve the resulted LCP. In this paper, we propose a fixed point iterative method to solve this type of LCPs, where the splitting technique of the matrix is used. We show that the proposed method is globally convergent under mild assumptions. The preliminary numerical results are reported, which demonstrate that the proposed method is more accurate than the PSOR for the problems we tested.

关键词： American option pricing finite difference method fixed point method linear complementarityproblem

In Situ Observation of Gypsum-Anhydrite Transition at High Pressure and High Temperature

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Chinese Physics Letters 2012年第4期29卷 252-255页

作者： LIU Chuan-Jiang zheng hai-Fei Key Laboratory of Orogenic Belts and Crustal Evolution(Ministry of Education) Peking UniversityBeijing 100871 Institute of Geochemistry Peking UniversityBeijing 100871

An in-situ Raman spectroscopic study of gypsum-anhydrite transition under a saturated water condition at high pressure and high temperature is performed using a hydrothermal diamond anvil cell (HDAC).The experimental results show that gypsum dissolvs in water at ambient temperature and above 496 *** increasing temperature,the anhydrite (CaSO4) phase precipitates at 250 320℃ in the pressure range of 1.0 1.5 GPa,indicating that under a saturated water condition,both stable conditions of pressure and temperature and high levels of Ca and SO4 ion concentrations in aqueous solution are essential for the formation of anhydrite.A linear relationship between the pressure and temperature for the precipitation of anhydrite is established as P(GPa) =0.0068T - 0.7126 (250℃≤T≤320℃).Anhydrite remained stable during rapid cooling of the sample chamber,showing that the gypsum-anhydrite transition involving both dissolution and precipitation processes is irreversible at high pressure and high temperature.

关键词： saturated Transition Observation