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Intensified Impact of Northern Tropical Atlantic SST on Tropical Cyclogenesis Frequency over the Western North Pacific after the Late 1980s

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Advances in Atmospheric Sciences 2016年第8期33卷 919-930页

作者： xi cao Shangfeng CHEN Guanghua CHEN Renguang WU Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric Physics Chinese Academy of Sciences

Previous studies suggest that spring SST anomalies over the northern tropical Atlantic（NTA） affect the tropical cyclone（TC） activity over the western North Pacific（WNP） in the following summer and fall. The present study reveals that the connection between spring NTA SST and following summer–fall WNP TC genesis frequency is not stationary. The influence of spring NTA SST on following summer–fall WNP TC genesis frequency is weak and insignificant before, but strong and significant after, the late 1980 s. Before the late 1980 s, the NTA SST anomaly-induced SST anomalies in the tropical central Pacific are weak, and the response of atmospheric circulation over the WNP is not strong. As a result, the connection between spring NTA SST and following summer–fall WNP TC genesis frequency is insignificant in the former period. In contrast,after the late 1980 s, NTA SST anomalies induce pronounced tropical central Pacific SST anomalies through an Atlantic–Pacific teleconnection. Tropical central Pacific SST anomalies further induce favorable conditions for WNP TC genesis,including vertical motion, mid-level relative humidity, and vertical zonal wind shear. Hence, the connection between NTA SST and WNP TC genesis frequency is significant in the recent period. Further analysis shows that the interdecadal change in the connection between spring NTA SST and following summer–fall WNP TC genesis frequency may be related to the climatological SST change over the NTA region.

关键词： northern tropical Atlantic SST tropical cyclone western North Pacific

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Optimization of Air Route Network Nodes to Avoid ″Three Areas″ Based on An Adaptive Ant Colony Algorithm

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Transactions of Nanjing University of Aeronautics and Astronautics 2016年第4期33卷 469-478页

作者： Wang Shijin Li Qingyun cao xi Li Haiyun College of Civil Aviation Nanjing University of Aeronautics and Astronautics

Air route network(ARN)planning is an efficient way to alleviate civil aviation flight delays caused by increasing development and pressure for safe ***,the ARN shortest path was taken as the objective function,and an air route network node(ARNN)optimization model was developed to circumvent the restrictions imposed by″three areas″,also known as prohibited areas,restricted areas,and dangerous areas(PRDs),by creating agrid *** finally the objective function was solved by means of an adaptive ant colony algorithm(AACA).The A593,A470,B221,and G204 air routes in the busy ZSHA flight information region,where the airspace includes areas with different levels of PRDs,were taken as an *** on current flight patterns,a layout optimization of the ARNN was computed using this model and algorithm and successfully avoided *** optimized result reduced the total length of routes by 2.14% and the total cost by 9.875%.

关键词： air route network planning three area avoidance optimization of air route network node adaptive ant colony algorithm grid environment

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HAPE3D—a new constructive algorithm for the 3D irregular packing problem

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Frontiers of Information Technology & Electronic Engineering 2015年第5期16卷 380-390页

作者： xiao LIU Jia-min LIU An-xi cao Zhuang-le YAO School of Civil and Transportation Engineering South China University of Technology School of Information Science and Engineering Shenyang University of Technology College of Ocean Science and Engineer Shanghai Maritime University

We propose a new constructive algorithm, called HAPE3 D, which is a heuristic algorithm based on the principle of minimum total potential energy for the 3D irregular packing problem, involving packing a set of irregularly shaped polyhedrons into a box-shaped container with fixed width and length but unconstrained height. The objective is to allocate all the polyhedrons in the container, and thus minimize the waste or maximize profit. HAPE3 D can deal with arbitrarily shaped polyhedrons, which can be rotated around each coordinate axis at different angles. The most outstanding merit is that HAPE3 D does not need to calculate no-fit polyhedron(NFP), which is a huge obstacle for the 3D packing problem. HAPE3 D can also be hybridized with a meta-heuristic algorithm such as simulated annealing. Two groups of computational experiments demonstrate the good performance of HAPE3 D and prove that it can be hybridized quite well with a meta-heuristic algorithm to further improve the packing quality.

关键词： 3D packing problem Layout design Simulation Optimization Constructive algorithm Meta-heuristics

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基于红茶工艺的显齿蛇葡萄叶发酵条件研究

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粮食与食品工业 2024年第5期31卷 20-26,34页

作者：娄晨晨曹熙覃正远杨大伟湖南农业大学食品科学技术学院长沙410128 张家界公昭乡村旅游开发有限责任公司张家界427000

本试验采用红茶工艺发酵显齿蛇葡萄叶,以感官品质、多酚与黄酮含量为考察指标,在初始茶坯含水量、发酵温度及发酵时间等单因素试验基础上,进行响应面试验并进行优化。结果表明:在显齿蛇葡萄茶发酵温度26℃、初始茶坯含水量66%、发酵时间... 详细信息

本试验采用红茶工艺发酵显齿蛇葡萄叶,以感官品质、多酚与黄酮含量为考察指标,在初始茶坯含水量、发酵温度及发酵时间等单因素试验基础上,进行响应面试验并进行优化。结果表明:在显齿蛇葡萄茶发酵温度26℃、初始茶坯含水量66%、发酵时间5.5 h时,发酵茶感官评分为91.22分。产品紧结乌润,茶汤橙黄明亮,口感醇厚回甘,且有效保留此茶中黄酮、多酚等有效成分,其中黄酮含量为179.143 mg/g、多酚含量为248.893 mg/g。研究结果可为显齿蛇葡萄叶红茶加工提供理论与实践依据。

关键词：红茶显齿蛇葡萄叶发酵响应面

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大孔柚子型微结构光纤探针的表面增强拉曼散射性能研究

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光谱学与光谱分析 2024年第2期44卷 527-533页

作者：李佳轩付子珍曹茜清胡志国付兴虎付广伟金娃毕卫红燕山大学信息科学与工程学院河北省特种光纤与光纤传感重点实验室河北秦皇岛066004

随着光纤制备工艺以及纳米材料制备技术的发展,光纤探针已成为一种新型的表面增强拉曼散射(SERS)基底,通过在普通单模光纤或多模光纤上制备不同的结构并修饰相应的纳米材料,可以得到多种类型的光纤表面增强拉曼散射探针,并实现较好的检... 详细信息

随着光纤制备工艺以及纳米材料制备技术的发展,光纤探针已成为一种新型的表面增强拉曼散射(SERS)基底,通过在普通单模光纤或多模光纤上制备不同的结构并修饰相应的纳米材料,可以得到多种类型的光纤表面增强拉曼散射探针,并实现较好的检测效果。但受限于光纤本身的结构,普通光纤仅能利用端面或侧表面提供拉曼检测的“热点”区域,限制了其SERS性能的进一步提高。因此制备了大孔柚子型微结构光纤(MSF)表面增强拉曼散射(SERS)探针,其中大孔柚子型MSF SERS探针结构通过一段阶跃多模光纤与柚子型微结构光纤熔接制得。实验分别对自制的纳米银溶胶基底以及大孔柚子型MSF SERS探针的SERS性能进行检测。采用溶胶自组装法制备负载银纳米颗粒的MSF SERS探针,通过控制自组装时间制备不同光纤SERS探针(Ag/MSF-x,其中x为自组装时间,分别为15、30、45、60 min)。采用溶液检测方法,利用Ag/MSF-x探针对10^(-3) mol·L^(-1)的亚甲基蓝(MB)探针分子进行检测,通过比较相同条件下的增强效果筛选得到Ag/MSF-45探针。为进一步检测Ag/MSF-45探针的SERS性能,制备不同浓度的MB溶液,分别利用纳米银溶胶基底和Ag/MSF-45探针对其进行检测。实验结果表明,纳米银溶胶基底对MB的检测限(LOD)为10^(-6) mol·L^(-1),Ag/MSF-45探针对MB的检测限(LOD)为10^(-7) mol·L^(-1);拉曼信号的再现性结果表明纳米银溶胶基底以及Ag/MSF-45探针在各个特征峰处的RSD值均在合理范围内;在1619 cm^(-1)拉曼位移处对纳米银溶胶基底以及Ag/MSF-45探针检测MB的拉曼强度和浓度进行对数转换拟合,纳米银溶胶基底的拟合优度R2达0.91628,Ag/MSF-45探针的拟合优度R2达0.98848;纳米银溶胶基底和Ag/MSF-45探针的再现性结果表明,其在各个特征峰处的RSD值均处于合理范围,但Ag/MSF-45探针的各特征峰RSD值均小于纳米银溶胶基底,最大为13.89%;利用10^(-6) mol·L^(-1)的MB对Ag/MSF-45探针的增强因子(AEF)进行计算,Ag/MSF-45探针的AEF达到6.09×10^(6),表现出良好的增强效果。因此,基于大孔柚子型MSF SERS探针凭借独特的空气孔结构使其具有较高的灵敏度以及良好的再现性,且其SERS性能均优于纳米银溶胶基底,在农业、化学分析、生物检测等领域及大分子物质检测等方面应用前景广泛。

关键词：表面增强拉曼散射柚子型微结构光纤光纤探针纳米银溶胶亚甲基蓝

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儿童创伤性癫痫进展为药物难治性癫痫的危险因素分析

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中华神经外科杂志 2024年第9期40卷 897-901页

作者：曹西霍坤良陈靓李佳宇杨子茵高安亮成都医学院第二附属医院·核工业四一六医院神经外科成都610000

目的探讨儿童创伤性癫痫(PTE)从早期药物可控进展为药物难治性癫痫(DRE)的相关危险因素。方法回顾性分析2013年1月至2023年6月于成都医学院第二附属医院·核工业四一六医院神经外科就诊的232例PTE患儿的临床资料,年龄均≤14岁,随访时间... 详细信息

目的探讨儿童创伤性癫痫(PTE)从早期药物可控进展为药物难治性癫痫(DRE)的相关危险因素。方法回顾性分析2013年1月至2023年6月于成都医学院第二附属医院·核工业四一六医院神经外科就诊的232例PTE患儿的临床资料,年龄均≤14岁,随访时间均>2年。其中54例为DRE组,178例为非DRE组。比较两组临床资料的差异,筛选影响PTE进展为DRE的相关因素;将两组差异有统计学意义的指标纳入多因素logistic回归模型中进行分析,筛选影响儿童PTE进展为DRE的独立危险因素。结果与非DRE组比较,DRE组受伤年龄≤7岁、颅脑损伤部位为颞叶、脑挫裂伤、伤后24 h内未手术、脑电图显示癫痫波及服药依从性差的患儿占比高,差异均有统计学意义(均P0.05)。多因素logistic回归分析显示,年龄≤7岁(OR=7.27,95%CI:2.59~20.40)、颅脑损伤部位为颞叶(OR=13.06,95%CI:3.41~49.97)、脑挫裂伤(OR=5.36,95%CI:1.18~24.41)与PTE进展为DRE相关(均P<0.05)。结论受伤年龄≤7岁、颞叶受损、脑挫裂伤是PTE患儿进展为DRE的独立危险因素。

关键词：颅脑损伤癫痫,创伤后儿童危险因素药物难治性癫痫

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Effect of volume fraction and mechanical stability of austenite on ductility of medium Mn steel

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Journal of Iron and Steel Research International 2019年第11期26卷 1209-1218页

作者： Si-lian Che Zhao-xi cao Chang Wang Chong-xiang Huang Dirk Ponge Wen-quan cao Central Iron and Steel Research Institute(CISRI) Beijing 100081China Science Faculty University of SydneySydney NSW 2006Australia School of Aeronautics and Astronautics Sichuan UniversityChengdu 610065SichuanChina Max-Planck-Institute for Iron Research Duesseldorf 40237Germany

A hot-rolled medium Mn(0.2C5Mn)steel is annealed at 650℃ to produce an ultrafine-grained duplex microstructure with different austenite volume fractions by austenite reverted transformation(ART)annealing,and the orientation relationship strictly obeys K-S orientation relationship before *** tests are carried out in a temperature range from-196 to 400℃ to examine the effects of the austenite volume fraction and the deformation temperature on the tensile properties and the austenite *** observations reveal that the metastable austenite gradually transformed into a-martensite,which is controlled by the deformation strain,the temperature and the austenite volume *** strain hardening behavior and ductility of the studied steel are dependent on austenite volume fraction and deformation temperature *** stress-strain curves of ART-annealed 0.2C5Mn steel assume an S shape and a very large work hardening rate of about 10 GPa is obtained at liquid nitrogen deformation *** on the experimental data,a quantitative relation is proposed to describe the ductility dependence on both the austenite volume fraction and its mechanical stability.

关键词： TRIP effect Ductility Phase transformation Austenite volume fraction Mechanical stability

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Formation of the Fertilization Pore during Oogenesis of the Fern Ceratopteris thalictroides

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Journal of Integrative Plant Biology 2010年第6期52卷 518-527页

作者： Jian-Guo cao Quan-xi Wang Wen-Mei Bao College of Life and Environment Sciences Shanghai Normal University Shanghai 200234 China

The development of the fertilization pore during oogenesis of the fern Ceratopteris thalictroides was followed using transmission electron microscopy. The newly formed egg is appressed closely to the adjacent cells. There are well-developed plasmodesmata between the egg and the ventral canal cell, but none between the egg and the jacket cells of the archegonium. During maturation, a separation cavity is formed around the egg. However, a pore region persistently connects the egg and the ventral canal cell. The extra egg membrane is formed by deposition of sheets of endoplasmic reticulum （ER）, but no ER is deposited on the inner surface of the pore region. Thus, a fertilization pore, covered by a layer of plasmalemma, is formed. The ventral canal cell undoubtedly participates the formation of the fertilization pore, probably by absorbing the sheets of ER beneath the pore region. The functional significance of the ventral canal cell in formation of the fertilization pore is discussed. The features of the mature egg include that abundant concentric membranes and osmiophilic vesicles occur in the cytoplasm of the mature egg. The initial, round nucleus of the egg eventually becomes cup-shaped. This investigation gives some new insights about the cells participating oogenesis in ferns.

关键词： Oogenesis Ferns Cells Eggs Lymphocytes

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山西省女性宫颈癌防治知信行现状及影响因素研究

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中华疾病控制杂志 2024年第6期28卷 702-708,720页

作者：贺鹭秦梦霞李思甜李文爱蔡雨彤曹熙武大宏山西医科大学公共卫生学院社会医学教研室太原030001 农村健康与卫生发展研究中心太原030001 山西医科大学煤炭环境致病与防治教育部重点实验室太原030001 山西尚宁健康体检中心太原030001

目的了解山西省女性宫颈癌防治知信行现状及其影响因素,为促进女性参与宫颈癌筛查并重视农村女性的健康教育工作提供依据。方法采用线上线下相结合的方式对山西省3460名女性进行问卷调查,运用χ^(2)检验和二元logistic回归分析模型探讨... 详细信息

目的了解山西省女性宫颈癌防治知信行现状及其影响因素,为促进女性参与宫颈癌筛查并重视农村女性的健康教育工作提供依据。方法采用线上线下相结合的方式对山西省3460名女性进行问卷调查,运用χ^(2)检验和二元logistic回归分析模型探讨山西省女性宫颈癌防治知信行的影响因素。结果山西省女性宫颈癌知识知晓率为51.3%;防治态度积极率为75.9%;宫颈癌筛查率42.6%;今后愿意接受宫颈癌筛查人数占比92.4%。年龄(OR=0.737,95%CI:0.681~0.799,P<0.001)、文化程度(OR=1.321,95%CI:1.219~1.431,P<0.001)、职业[以公职人员为对照,其他组OR分别为1.166(95%CI:0.953~1.429,P=0.136)、2.690(95%CI:2.143~3.377,P<0.001)、3.114(95%CI:2.323~4.174,P<0.001)、1.444(95%CI:1.051~1.984,P=0.023)]、家庭人均年收入(OR=1.103,95%CI:1.051~1.158,P<0.001)是女性宫颈癌防治知识的影响因素;年龄(OR=0.719,95%CI:0.660~0.785,P<0.001)、文化程度(OR=1.206,95%CI:1.108~1.313,P<0.001)、职业[以公职人员为对照,其他组OR分别为1.202(95%CI:0.956~1.512,P=0.116)、1.621(95%CI:1.241~2.118,P<0.001)、1.389(95%CI:0.984~1.962,P=0.062)、1.327(95%CI:0.958~1.840,P=0.089)]、家庭人均年收入(OR=1.085,95%CI:1.029~1.145,P=0.003)、吸烟(OR=0.666,95%CI:0.490~0.907,P=0.010)是女性宫颈癌防治态度的影响因素;年龄(OR=1.161,95%CI:1.051~1.284,P=0.003)、户籍(OR=1.474,95%CI:1.230~1.767,P<0.001)、职业[以公职人员为对照,其他组OR分别为1.019(95%CI:0.832~1.248,P=0.854)、1.840(95%CI:1.427~2.372,P<0.001)、0.758(95%CI:0.477~1.206,P=0.243)、0.626(95%CI:0.463~0.845,P=0.002)]、婚姻状态[以未婚为对照,其他组OR分别为8.306(95%CI:6.164~11.194,P<0.001)、10.480(95%CI:6.031~18.212,P<0.001)]、家庭人均年收入(OR=1.114,95%CI:1.058~1.174,P<0.001)、女性疾病患病情况(OR=1.322,95%CI:1.142~1.530,P<0.001)、早餐(OR=1.423,95%CI:1.178~1.720,P<0.001)、体育锻炼(OR=1.192,95%CI:1.061~1.340,P=0.003)、人工流产情况(OR=1.237,95%CI:1.119~1.367,P<0.001)是宫颈癌筛查行为的影响因素;年龄(OR=0.760,95%CI:0.683~0.845,P<0.001)、家庭人均年收入(OR=1.133,95%CI:1.050~1.223,P=0.001)、早餐(OR=1.390,95%CI:1.074~1.800,P=0.012)、吸烟(OR=0.441,95%CI:0.309~0.630,P<0.001)是宫颈癌筛查意愿的影响因素。结论山西省女性对宫颈癌防治知识知晓率和筛查行为表现较差,防治态度有待提高,筛查意愿较高,宫颈癌筛查率城乡差距较大,相关部门需通过多种途径促进女性参与宫颈癌筛查并重视农村女性的健康教育工作。

关键词：宫颈癌知信行影响因素女性筛查行为

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On the Weakened Relationship between Spring Arctic Oscillation and Following Summer Tropical Cyclone Frequency over the Western North Pacific:A Comparison between 1968–1986 and 1989–2007

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Advances in Atmospheric Sciences 2015年第10期32卷 1319-1328页

作者： cao xi CHEN Shangfeng CHEN Guanghua CHEN Wen WU Renguang Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of Sciences

This study documents a weakening of the relationship between the spring Arctic Oscillation （AO） and the following summer tropical cyclone （TC） formation frequency over the eastern part （150°-180°E） of the western North Pacific （WNP）. The relationship is strong and statistically significant during 1968-1986, but becomes weak during 1989-2007. The spring AO- related SST, atmospheric dynamic, and thermodynamic conditions are compared between the two epochs to understand the possible reasons for the change in the relationship. Results indicate that the spring AO leads to an E1 Nifio-like SST anomaly, lower-level anomalous cyclonic circulation, upper-level anomalous anticyclonic circulation, enhanced ascending motion, and a positive midlevel relative humidity anomaly in the tropical western-central Pacific during 1968-1986, whereas the AOrelated anomalies in the above quantities are weak during 1989-2007. Hence, the large-scale dynamic and thermodynamic anomalies are more favorable for TC formation over the eastern WNP during 1968-1986 than during 1989-2007.

关键词： spring Arctic Oscillation summer tropical cyclone western North Pacific SST

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