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Optimization and evaluation of microencapsulated artificial diet for mass rearing the predatory ladybird Propylea japonica （Coleoptera： Coccinellidae）

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Insect Science 2015年第1期22卷 111-120页

作者： xiao-Ling tan Jing Zhao Su Wang Fan Zhang Institute of Plant and Environment Protection Beijing Academy of Agriculture and Forestry Sciences Beijing College of Plant Protection Northwest A & F University Yangling Shaanxi Weifang Institute of Science and Technology Weifang Shandong China

Artificial diet optimization is a key aspect in mass rearing of natural enemies since it influences the quality and feeding effectiveness, and thus the success of the biological control program. Here, we introduced the microencapsulation method to package liquid artificial diet for feeding of the ladybird Propyleajaponica. An orthogonal test of the quality of microencapsulated artificial diets （ADMs） was performed on key variables in production; Ca-alginate concentration, chitosan concentration and weight ratio of wall material to inner diet. We compared the development and reproduction of P. japonica fed on the ADMs under different cold-stored periods with those fed on fresh aphids and liquid artificial diets, in addition to a comparison of respiration, locomotion and predation. Our results indicated that chitosan concentration and ratio of shell to core significantly influence the quality of ADMs. The optimal recipe is 1.0% Ca-alginate, 1.6% chitosan and shell ： core = 1 ： 2. Insects reared on fresh optimized ADMs were similar to those fed on fresh prey in all developmental and reproductive characteristics except for survival ratio and female fertility. ADMs appeared more beneficial than using a liquid artificial diet, although this may decrease with the prolonging of the cold-storage period. *** fed either on fresh ADMs or fresh prey showed improved respiration and predation abilities compared to where liquid artificial diet was used. Our study indicates advantages of microencapsulation in the production of artificial diet for predatory ladybird rearing. A microencapsulated diet can directly increase the efficiency and stability of mass rearing .

关键词： alginate chitson development locomotion predation quality evaluation reproduction respiration

Some Results on Special Stable Vector Bundles of Rank 3 on Algebraic Curves

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Acta Mathematica Sinica,English Series 2008年第3期24卷 417-430页

作者： Bo Han FANGi xiao Jiang tan Wei Yi ZHANG School of Mathematical Sciences Peking University Beijing 100871 P. R. China The research is supported by President Foundation of Peking University

The authors discuss the existence and classification of stable vector bundles of rank 3, with 2 3 or 4 linearly independent holomorphic sections. The sets of all such bundles are denoted by ω3^2,d and w3 respectively. Our argument leads to sufficient and necessary conditions for the existence of both kinds of bundles. The conclusion is very interesting because of its contradiction to the conjectured dimension formula of stable bundles. Finally, we give a preliminary classification of ω3^2,4 and a complete discussion on the structure of ω3^3,2/3g＋2.

关键词： algebraic curves stable vector bundles sheaf conjectured dimension formula

Attitude Stabilization Control for Rigid Spacecraft with Actuator Misalignment and Saturation

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Attitude Stabilization Control for Rigid Spacecraft with Act...

Numerical simulation on solidification behavior and structure of 38CrMoAl large round bloom using CAFE model

第36届中国控制会议

作者： xiao tan Qinglei Hu Lei Guo School of Automation Science and Electrical Engineering Beihang University

ISBN: (纸本)9781538629185

A novel control scheme is presented in this work to address the attitude stabilization problem in the presence of actuator saturation,misalignment and lack of inertia *** a hyperbolic tangent function in its formulation,the control signal explicitly obeys a known maximum-torque *** the possible actuator misalignment,a dynamic attitude gain is introduced to accommodate the unknown but bounded configuration *** configuration uncertainty assumption is this work is a relatively mild *** saturated controller can be viewed as smooth nonlinear proportional-derivative control *** convergence of the closed-loop attitude system is guaranteed *** have been carried out to demonstrate the effectiveness of the proposed strategy.

关键词： Attitude control Actuator saturation Actuator misalignment

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Journal of Iron and Steel Research International 2023年第6期30卷 1222-1233页

作者： Rui-song tan Wei Liu Bo Song Shu-feng Yang Yong-feng Chen xiao-tan Zuo Yan Huang School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Wuhu Xinxing Ductile Pipe Co. Ltd.Wuhu 241002AnhuiChina

A coupled cellular automaton-finite element model was developed to simulate the solidification behavior and structure of 38CrMoAl large round bloom,in which mold electromagnetic stirring+final electromagnetic stirring was taken into consideration,under different superheat,casting speeds,and secondary cooling water *** trials for infrared temperature measurement and macro etch experiments of the post-test round bloom samples were used to verify the simulated solidification structure and temperature *** simulation results show that superheat and secondary cooling water flow have little influence on the surface temperature,center temperature,and center solid fraction while casting speed has a more obvious influence on solidification *** the increase in the casting speed of 0.02 m min^(-1),the solidification position is prolonged by about 1.64 *** the increasing specific water ratio by 0.02 L kg^(-1) each,the surface temperature of the secondary cooling zones decreases by about 18℃,and the solidification position shortens by about 0.11 *** the superheat increases from 10 to 40℃,the ratio of the equiaxed crystal zone decreases from 35.98% to 23.98%.The casting speed and secondary cooling water flow increase the equiaxed crystal ratios of the large round bloom,but neither is significant,both being about 2%.

关键词： 38CrMoAl large round bloom CAFE model Solidification structure Superheat Casting speed Secondary cooling water flow

低压低氧环境暴露下睾丸单细胞转录组分析揭示生殖毒性机制

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协和医学杂志 2024年第3期15卷 587-597页

作者：吉运华王林猛姚振谭啸郭煦妍侯皓中张波空军军医大学附属唐都医院泌尿外科西安710032 陕西中医药大学陕西咸阳712000 空军军医大学附属西京医院泌尿外科西安710032

目的绘制低压低氧环境暴露下睾丸组织单细胞转录组图谱,并进行支持细胞多样性分析,以期为开展生殖毒性机制相关研究提供新思路。方法取健康雄性小鼠20只,采用随机数字表法分为对照组(n=10)和低压低氧组(n=10)。其中对照组于正常环境... 详细信息

目的绘制低压低氧环境暴露下睾丸组织单细胞转录组图谱,并进行支持细胞多样性分析,以期为开展生殖毒性机制相关研究提供新思路。方法取健康雄性小鼠20只,采用随机数字表法分为对照组(n=10)和低压低氧组(n=10)。其中对照组于正常环境下饲养,低压低氧组暴露于低压缺氧环境(压强=14 kPa,氧含量=14.5%)。6周后,取两组小鼠睾丸组织,采用Singleron Matrix^(TM)单细胞平台与Illumina NovaSeq二代测序技术获取转录组图谱并进行聚类、拟时序轨迹分析、功能分析、转录因子和细胞通讯研究。结果成功构建睾丸组织单细胞转录组图谱,其包含6个样本,总计约49 027个细胞,覆盖11种细胞类型。通过非负矩阵分解算法可将支持细胞聚类为4个亚群。其中亚群3可能对缺氧刺激更为敏感,通过影响PTN表达水平、调控精母细胞的细胞周期,以减少低压低氧所引发的生殖细胞功能损伤,PTN-PTPR通路可能为支持细胞对精原细胞发挥调控作用的一个重要调控节点;亚群4可通过KITLG-KIT信号通路在低压低氧环境暴露后调节精原细胞的细胞周期,影响精子发育。结论基于单细胞测序技术首次揭示了支持细胞在低压低氧暴露中的分子基础和调控讯号,从单细胞层面深入探究了低压低氧环境刺激所引发的生殖毒性机制,为后续开展相关临床研究提供了新视角。

关键词：低压低氧支持细胞精子形成细胞通讯单细胞转录测序

Target Tracking and Obstacle Avoidance for Multi-agent Networks with Input Constraints

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International Journal of Automation and computing 2011年第1期8卷 46-53页

作者： Jing Yan Xin-Ping Guan xiao-Yuan Luo Fu-xiao tan Department of Electrical Engineering Yanshan University Qinhuangdao 066004 PRC School of Electronic and Electric Engineering Shanghai Jiao Tong University Shanghai 200240 PRC School of Computer and Information Fuyang Teachers College Fuyang 236041 PRC

In this paper, the problems of target tracking and obstacle avoidance for multi-agent networks with input constraints are investigated. When there is a moving obstacle, the control objectives are to make the agents track a moving target and to avoid collisions among agents. First, without considering the input constraints, a novel distributed controller can be obtained based on the potential function. Second, at each sampling time, the control algorithm is optimized. Furthermore, to solve the problem that agents cannot effectively avoid the obstacles in dynamic environment where the obstacles are moving, a new velocity repulsive potential is designed. One advantage of the designed control algorithm is that each agent only requires local knowledge of its neighboring agents. Finally, simulation results are provided to verify the effectiveness of the proposed approach.

关键词： Target tracking obstacle avoidance multi-agent networks potential function optimal control.

返乡女性、非物质文化遗产产业化与乡村振兴:基于贵州省台江县“妈妈制造”的实践

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长江师范学院学报 2024年第5期40卷 67-77页

作者：龚卿民谭晓霜邵利军贵州大学历史与民族文化学院贵州贵阳550025 西南政法大学经济学院重庆渝北401120

解决我国返乡女性的再就业是实施乡村振兴战略的基础,返乡女性的再就业既是回流地社会和谐发展的需要,也是促进回流地经济发展的需要。在梳理贵州省台江县非物质文化遗产产业化发展历程的基础上,对该地由公益项目“妈妈制造”支持且主... 详细信息

解决我国返乡女性的再就业是实施乡村振兴战略的基础,返乡女性的再就业既是回流地社会和谐发展的需要,也是促进回流地经济发展的需要。在梳理贵州省台江县非物质文化遗产产业化发展历程的基础上,对该地由公益项目“妈妈制造”支持且主要为返乡女性参与的苗绣产业进行实地调研,分析“妈妈制造”对返乡女性的收入获得、家庭照顾、文化自信、地方事务参与等方面的积极效应。同时厘清返乡女性与“妈妈制造”对推进乡村的社会经济文化发展所起作用,以期提供返乡女性群体与非物质文化遗产产业两者联结助力乡村振兴的可参考经验。

关键词：返乡女性非物质文化遗产乡村振兴文化产业化 “妈妈制造”

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蒙城野外站地电观测场地电性结构探测及解析

大地测量与地球动力学 2024年第6期44卷 591-594,610页

作者：曹志磊周琼徐顺强严吉李章谭笑周振贵黄山地震监测中心站安徽省黄山市245000 安徽省地震局合肥市230031 中国地震局地球物理勘探中心郑州市450000

利用高密度电阻率层析成像方法,在安徽蒙城地球物理国家野外科学观测研究站地电观测场地及周边进行地下介质电性结构探测,采用温纳装置连续滚动测量方式测得高精度视电阻率数据及测量电极高程信息。通过对探测数据进行正反演计算,获得... 详细信息

利用高密度电阻率层析成像方法,在安徽蒙城地球物理国家野外科学观测研究站地电观测场地及周边进行地下介质电性结构探测,采用温纳装置连续滚动测量方式测得高精度视电阻率数据及测量电极高程信息。通过对探测数据进行正反演计算,获得不同轴向、不同深度的电阻率分布特征及较为精细的研究区电性结构图像,同时结合历史探测资料和钻孔数据进行地质解释,为蒙城地电阻率观测资料的深入研究提供更为科学的背景依据。

关键词：电阻率层析成像电性结构正反演

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细支气管腺瘤25例临床及CT征象

中国胸心血管外科临床杂志 2024年第8期31卷 1127-1132页

作者：张明辉隋洺骅邱甜甜孙雪谭晓侯代伦临沂市人民医院影像科山东临沂276005 青岛大学附属烟台毓璜顶医院肿瘤科山东烟台264000 临沂市人民医院病理科山东临沂276005 首都医科大学附属北京胸科医院影像科北京101149

目的研究细支气管腺瘤的临床及胸部CT影像学表现。方法纳入2016—2021年临沂市人民医院及烟台毓璜顶医院经手术病理确诊为细支气管腺瘤的患者,回顾性分析其临床及CT影像学特征。结果纳入患者25例,其中男6例、女19例,年龄32~73(58.6±10... 详细信息

目的研究细支气管腺瘤的临床及胸部CT影像学表现。方法纳入2016—2021年临沂市人民医院及烟台毓璜顶医院经手术病理确诊为细支气管腺瘤的患者,回顾性分析其临床及CT影像学特征。结果纳入患者25例,其中男6例、女19例,年龄32~73(58.6±10.1)岁。所有病变免疫组织化学显示核增殖抗原Ki67(MIB1)均<5%。病变位于双肺上中叶9例,双肺下叶16例;位于肺外带22例,肺内中带3例;病变类圆形11例,不规则形14例;边界清楚22例;纯磨玻璃/混合磨玻璃结节6例,实性结节19例;有中心小空洞11例;有单支细支气管血管连接征18例;与邻近胸膜无粘连19例;无纵隔淋巴结肿大24例。结论细支气管腺瘤好发于中老年人,多发生于双肺下叶、外周肺野,患者多无任何临床症状,术后预后良好;CT上可表现较大结节或肿块、纯磨玻璃/混合磨玻璃结节、不规则实性小结节、中心小空洞。形态不规则的星芒样小结节、中心小空洞影、单支细支气管血管束与病变相连为细支气管腺瘤相对特异的影像学表现。

关键词：细支气管腺瘤良性肿瘤临床特征计算机断层扫描影像学特征