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日本囊对虾(Marsupenaeus japonicus)秋繁仔虾形态表型对氨氮耐受性能的影响效应

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海洋与湖沼 2017年第5期48卷 1092-1099页

作者：王志铮张思铭蒋宏雷申屠基康刘伟健任夙艺张晓霞 Msumenji Phiri Donatha Kajuna 浙江海洋大学水产学院舟山316022 宁波市海洋与渔业研究院宁波315000

以体长7.643±0.639mm的日本囊对虾秋繁同生群仔虾为实验对象,以氨氮为胁迫因子,在水温18.0±1.0oC、盐度20、p H 8.1±0.2的条件下,经确认其96h成活率略低于5%的氨氮攻毒质量浓度为52.37mg/L后,以此为氨氮急性攻毒实验质量浓度,借助显... 详细信息

以体长7.643±0.639mm的日本囊对虾秋繁同生群仔虾为实验对象,以氨氮为胁迫因子,在水温18.0±1.0oC、盐度20、p H 8.1±0.2的条件下,经确认其96h成活率略低于5%的氨氮攻毒质量浓度为52.37mg/L后,以此为氨氮急性攻毒实验质量浓度,借助显微扫描像素测量技术和多元分析方法定量研究了A、B、C、D、E实验群体(依次为氨氮攻毒0—24h、24—48h、48—72h、72—96 h时段内的死亡群体和氨氮攻毒96 h时的存活群体)间形态表型特征的差异。结果表明:(1)在所涉15项形态性状中,各实验群体间均无显著差异(P>0.05)的性状仅为总长和第四腹节长;(2)在所涉17项形态比例指标中,各实验群体间均无显著差异(P>0.05)的指标共计3项,依次为第五腹节长/总长、额剑长/头胸甲长和尾节高/尾节长,各实验群体间的欧氏距离均达到显著水平(P<0.01),且均有随耐氨氮性能差异的增大而呈显著增大的趋势;(3)经主成分分析,提取到的5个特征值均大于1的主成分,累计贡献率达85.940%,其中第1主成分的贡献率高达46.121%,其载荷绝对值大于0.5的主要影响变量占形态比例指标总数的64.706%;(4)将氨氮急性攻毒处理所获E实验群体定义为选留群,其余实验群体统归为淘汰群,经判别分析,所建的Fisher分类函数方程组可较清晰地区分淘汰群和选留群个体,其中选留群和淘汰群个体的判别准确率P1分别为99%和86.75%,P2分别为88.20%和98.86%,两者综合判别准确率为92.88%。

关键词：日本囊对虾秋繁仔虾同生群形态表型氨氮急性攻毒多元分析

Factors affecting the pilot trading market of carbon emissions in China

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Petroleum Science 2018年第2期15卷 412-420页

作者： Yong jiang Ya-Lin lei Yong-Zhi Yang Fang Wang School of Humanities and Economic Management China University of GeosciencesBeijing 10083China Key Laboratory of Carrying Capacity Assessment for Resources and Environment Ministry of Land and ResourcesBeijing 100083China Petrochina Research Institute of Petroleum Exploration and Development Beijing 100083China

Climate change and carbon emissions are major problems which are attracting worldwide attention. China has had its pilot carbon emission trading markets in seven regions for more than 3 years. What affects carbon emission trading market in China is a big question. More attention is paid to how China promotes the carbon emission trading schemes in the whole country. This paper addresses concerns about the functioning of carbon emission trading schemes in seven pilot regions and takes the weekly data from November 25, 2013, to March 19, 2017. We employ a vector autoregressive model to study how coal price, oil price and stock index have affected the carbon price in China. The results indicate that carbon price is mainly affected by its own historical price; coal price and stock index have negative effects on carbon price, while oil price has a negative effect on carbon price during the first 3 weeks and then has a positive effect on carbon price. More regulatory attention and economic measures are needed to improve market efficiency, and the mechanisms of carbon emission trading schemes should be improved.

关键词： Carbon emission trading market Carbon price VAR model China

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汽车翼子板三工序冲压工艺方案及成形仿真

应用科技 2021年第6期48卷 70-78页

作者：蒋磊王龙谢蛟龙陈一哲马培兵刘建东风本田汽车有限公司新车型中心湖北武汉430056 武汉理工大学现代汽车零部件技术湖北省重点实验室湖北武汉430070

为了降低汽车翼子板冲压模具成本,以某车型翼子板为研究对象,分析了产品结构特点和冲压工艺性。通过将侧修边与侧冲孔、侧整形与侧冲孔复合,以及采用“一次拉延成形”工艺代替“过拉延+整形”工艺,实现了翼子板冲压工艺方案的三工序化... 详细信息

为了降低汽车翼子板冲压模具成本,以某车型翼子板为研究对象,分析了产品结构特点和冲压工艺性。通过将侧修边与侧冲孔、侧整形与侧冲孔复合,以及采用“一次拉延成形”工艺代替“过拉延+整形”工艺,实现了翼子板冲压工艺方案的三工序化。利用有限元分析软件对翼子板全工序成形和真实回弹进行了数值模拟,验证了三工序冲压工艺方案的可行性,并根据仿真结果对翼子板工艺模面进行了工艺造型优化和回弹补偿设计。将优化后的工艺模面用于冲压模具制造调试,获得了成形质量良好、回弹量在±0.5mm以内的合格零件。实践证明,三工序冲压工艺方案可有效缩短冲压模具工序数量,并能节约冲压模具以及零件生产成本。

关键词：翼子板三工序冲压工艺有限元分析回弹补偿冲压模具成本

Power transmission risk assessment considering component condition

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Journal of Modern Power Systems and Clean Energy 2014年第1期2卷 50-58页

作者： lei GUO Qiwei QIU Jian LIU Yu ZHOU Linglei jiang North Subsection of State Grid Corporation of China Beijing 100053China Shanghai Electric Power Company Shanghai 201400China Maintenance Company of Shanghai Electric Power Company Shanghai 200000China

This paper proposes a new method for power transmission risk assessment considering historical failure statistics of transmission systems and operation failure risks of system *** failure risks are integrated into the new method based on operational condition assessment of components using the support vector data description(SVDD)*** traditional outage probability model of transmission lines has been modified to build a new framework for power transmission system risk *** proposed SVDD approach can provide a suitable mechanism to map component assessment grades to failure risks based on probabilistic behaviors of power system *** the new method,both up-todate component failure risks and traditional system risk indices can be processed with the proposed outage *** a result,component failure probabilities are not only related to historical statistic data but also operational data of components,and derived risk indices can reflect current operational conditions of *** simulation studies,the SVDD approach is employed to evaluate component conditions and link such conditions to failure rates using up-to-date component operational data,including both on-line and off-line data of *** IEEE 24-bus RTS-1979 system is used to demonstrate that component operational conditions can greatly affect the overall transmission system failure risks.

关键词： Risk assessment Component failure risk Outage probability Condition assessment Support vector data description

Blockchain Privacy Protection Based on Post Quantum Threshold Algorithm

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Computers, Materials & Continua 2023年第7期76卷 957-973页

作者： Faguo Wu Bo Zhou Jie jiang Tianyu lei Jiale Song Institute of Artificial Intelligence Beihang UniversityBeijing100191China Zhongguancun Laboratory Beijing100094China Key Laboratory of Mathematics Informatics and Behavioral Semantics(LMIB)Beihang UniversityBeijing100191China Bejing Advanced Innovation Center for Future Blockchain and Privacy Computing Beihang UniversityBeijing100191China LMIB and School of Mathematical Sciences Beihang UniversityBeijing100191China

With the rapid increase in demand for data trustworthiness and data security,distributed data storage technology represented by blockchain has received unprecedented *** technologies have been suggested for various uses because of their remarkable ability to offer decentralization,high autonomy,full process traceability,and tamper *** enables the exchange of information and value in an untrusted *** has been a significant increase in attention to the confidentiality and privacy preservation of blockchain *** data privacy is a critical concern in cryptography,and one of the most important protocols used to achieve this is the secret-sharing *** dividing the secret into shares and distributing them among multiple parties,no one can access the secret without the cooperation of the other ***,Attackers with quantum computers in the future can execute Grover’s and Shor’s algorithms on quantum computers that can break or reduce the currently widely used ***,centralized management of keys increases the risk of key *** paper proposed a post-quantum threshold algo-rithm to reduce the risk of data privacy leakage in blockchain *** algorithm uses distributed key management technology to reduce the risk of individual node private key leakage and provide post-quantum *** proposed privacy-preserving cryptographic algorithm provides a post-quantum threshold architecture for managing data,which involves defining users and interaction processes within the *** paper applies a linear secret-sharing solution to partition the private key of the Number Theory Research Unit(NTRU)algorithm into n *** constructs a t–n threshold that allows recovery of the plaintext only when more than t nodes participate in *** characteristic of a threshold makes the scheme resistant to collusion attacks from members whose combined credibility is less than the

关键词： Blockchain post-quantum cryptography threshold cryptography privacy protection

Reaction mechanism of arsenic capture by a calcium-based sorbent during the combustion of arsenic-contaminated biomass: A pilot-scale experience

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Frontiers of Environmental Science & Engineering 2019年第2期13卷 105-113页

作者： Mei lei Ziping Dong Ying jiang Philip Longhurst Xiaoming Wan Guangdong Zhou Center for Environmental Remediation Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of Water Energyand EnvironmentCranfield UniversityMK43 0ALCranfieldUK

Large quantities of contaminated biomass due to phytoremediation were disposed through combustion in low-income rural regions of *** process provided a solution to reduce waste volume and disposal ***-scale combustion trials were conducted for in site disposal at phytoremediation *** reaction mechanism of arsenic capture during pilot-scale combustion should be determined to control the arsenic emission in flue *** study investigated three Pteris vittata *** with a disposal capacity of 600 kg/d and different arsenic concentrations from three sites in *** arsenic concentration in flue gas was greater than that of the national standard in the trial with no emission control,and the arsenic concentration in biomass was 486 mg/*** addition notably reduced arsenic emission in flue gas,and absorption was efficient when CaO was mixed with biomass at 10% of the total *** the trial with 10% CaO addition,arsenic recovery from ash reached 76%,which is an ~8-fold increase compared with the *** radiation analysis confirmed that calcium arsenate is the dominant reaction product.

关键词： Arsenic contamination Phytoremediation Emission control Calcium-based sorbent Biomass disposal Pilot-scale combustion

传统与数字化X线摄影检出肺部小结节的ROC曲线评价

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中国医学影像技术 2005年第5期21卷 729-731页

作者：蒋磊陈福康吴建彬黄海峡潘祖军黄吟华吴科峰陈斌华东疗养院放射科江苏无锡214065

目的对比传统和直接数字化X线摄影对肺部小结节(≤2 cm)检出的诊断价值.方法选取经证实的肺部非钙化结节和无肺部结节的健康体检病例各90例,分别摄取正位传统胸片和数字化胸片,由高低年资医生分别进行观察评分,结果用ROC曲线法分析.结... 详细信息

目的对比传统和直接数字化X线摄影对肺部小结节(≤2 cm)检出的诊断价值.方法选取经证实的肺部非钙化结节和无肺部结节的健康体检病例各90例,分别摄取正位传统胸片和数字化胸片,由高低年资医生分别进行观察评分,结果用ROC曲线法分析.结果总体数字化胸片组ROC曲线下面积(Az值)显著大于传统胸片组(t＝2.726,P＝0.034).隐蔽部位肺结节显示数字化胸片组Az值显著大于传统胸片组(t＝3.606,P＝0.011).6组不同大小病灶均显示数字化胸片组Az值大于传统胸片组,其中前三组(3～5 mm,6～8 mm,9～11 mm)有统计学显著性差异(P＜0.05).结论数字化胸片在发现肺部小结节病灶,尤其在检出肺隐蔽部位结节和肺微小结节方面,明显优于传统胸片.

关键词：肺肺结节数字化摄影 ROC曲线

Variation of toxic pollutants emission during a feeding cycle from an updraft fixed bed gasifier for disposing rural solid waste

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Chinese Journal of Chemical Engineering 2018年第3期26卷 608-613页

作者： Ming lei Jing Hai jiang Cheng Jiawei Lu Jieru Zhang Tao You School of Chemistry and Chemical Engineering South China University of Technology South China Institute of Environmental Sciences Ministry of Environmental Protection (MEP)

The variation of toxic pollutants emission during a feeding cycle was examined by field monitoring from a batch feeding updraft fixed bed gasifier for disposing rural domestic solid waste. Results showed that the content of oxygen in flue gas gradually increased, while SO_2 and HCl in flue gas decreased with time after feeding in a whole feeding cycle. Although large amount of CO was produced during the gasifying, low CO content in flue gas could be obtained after the heat treatment with an electric heating device. The distribution characteristics of dioxin congeners in flue gas indicted the re-synthesis of dioxins after flue gas heating, and the increase of oxygen promoted the synthesis of dioxins. The emission content of dioxins could meet the standard(0.1 ng I-TEQ·m^(-3),GB18458-2014) of China when the oxygen content was controlled below 8.3%. Hence, for a batch feeding gasifier,low oxygen condition should be offered by reducing air intake at the later stage of feeding cycle in order to decrease the re-synthesis of dioxins after the flue gas heating.

关键词： Updraft fixed bed gasifier Solid waste Pollutants Dioxins Emission Variation

Upregulation of Slc26a4 in the Early Development of Silicosis via GEO Database Analysis in vivo and in vitro

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Biomedical and Environmental Sciences 2019年第12期32卷 938-943页

作者： jiang Qing Tao HAN lei LIU Xin ZHU Bao Li Department of Medicine Jiangsu Health Vocational CollegeNanjing 211800JiangsuChina Institute of Occupational Disease Prevention Jiangsu Provincial Center for Disease Prevention and ControlNanjing 210028JiangsuChina

Silicosis is characterized by the development of progressive pulmonary fibrosis as a result of inhaling free *** is limited as to date only a limited number of effective therapies are *** fibrotic process usually takes between 15 and 20 years to develop and is dependent on the amount of SiO2 *** main symptoms are coughing,breathlessness,and general weakness,and diagnosisis primarily facilitated by chest *** tendto be diagnosed only in the late stages,when thelungs present considerable fibrotic nodules,andconsequently,an important loss of respiratoryfunction[1].Based on increasing evidenee fromepidemiological and experimental animal studies,the In ter national Agency for Research on Can cer(IARC)has classified crystalline silica as a Group 1carcinogen(1997),which could lead to lung cancer(LC)[2].

关键词： diagnosis lung primarily