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不同缓释肥料用量及运筹方式对杂交晚稻农艺性状及产量的影响

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浙江农业科学 2024年第1期65卷 37-40页

作者：何跃华薛占奎徐晶晶施佳炜金丽刘慧芳金华市汤溪镇农业技术推广站浙江金华321000 金华市农业技术推广站浙江金华321000 金华市厚大粮蔬专业合作社浙江金华321000

为筛选出适合晚稻生产的肥料运筹方式,减少肥料成本、增加经济效益,以籼粳杂交晚稻甬优7850为试验材料,研究不同缓释肥料用量及运筹方式对产量、农艺性状及氮素效率的影响。结果表明,等养分处理下,有机无机缓释肥有利于提高有效穗、每... 详细信息

为筛选出适合晚稻生产的肥料运筹方式,减少肥料成本、增加经济效益,以籼粳杂交晚稻甬优7850为试验材料,研究不同缓释肥料用量及运筹方式对产量、农艺性状及氮素效率的影响。结果表明,等养分处理下,有机无机缓释肥有利于提高有效穗、每穗粒数,667 m^(2)基肥使用30 kg加适量分蘖肥较常规施肥增产4.80%,氮肥农学效率最高;等成本情况下,缓释肥处理氮素减少,产量仍较常规施肥增加1.53%,且氮肥农学效率明显高于常规施肥。双季晚稻有机无机缓释肥以667 m^(2)基肥用量30 kg、总氮量在10.7~12.0 kg为宜。

关键词：甬优7850 缓释肥农艺性状氮肥农学效率产量

Collaborative multi-lane on-ramp merging strategy for connected and automated vehicles using dynamic conflict graph

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Journal of Intelligent and Connected Vehicles

Journal of Intelligent and Connected Vehicles 2024年第1期7卷 38-51页

作者： Jia shi Yugong Luo Pengfei Li jiawei Wang Keqiang Li School of Vehicle and Mobility Tsinghua UniversityBeijing 100084China Department of Civil and Environmental Engineering University of MichiganAnn ArborMI 48109USA

The on-ramp merging in multi-lane highway scenarios presents challenges due to the complexity of coordinating vehicles’merging and lane-changing behaviors,while ensuring safety and optimizing traffic ***,there are few studies that have addressed the merging problem of ramp vehicles and the cooperative lane-change problem of mainline vehicles within a unified framework and proposed corresponding optimization *** tackle this issue,this study adopts a cyber-physical integration perspective and proposes a graph-based solution ***,the information of vehicle groups in the physical plane is mapped to the cyber plane,and a dynamic conflict graph is introduced in the cyber space to describe the conflict relationships among vehicle ***,graph decomposition and search strategies are employed to obtain the optimal solution,including the set of mainline vehicles changing lanes,passing sequences for each route,and corresponding ***,the proposed dynamic conflict graph-based algorithm is validated through simulations in continuous traffic with various densities,and its performance is compared with the default algorithm in *** results demonstrate the effectiveness of the proposed approach in improving vehicle safety and traffic efficiency,particularly in high traffic density scenarios,providing valuable insights for future research in multi-lane merging strategies.

关键词： cooperative merging multi-lane graph theory cyber-physical integration system

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带电作业负载断路及启动工具连接器的研制

农村电气化 2024年第2期 58-60页

作者：王淦张明徐孟霞储贻鑫陈勇敢石嘉伟国网安徽岳西县供电公司安徽岳西246600

目前国家电网公司大力推进配电网智能化改造,传统的真空开关已无法满足配电网智能化要求,须全面更换新型带电压互感器的智能真空开关;而采取带电直接安装电压互感器引线会产生充电电流的安全问题,违反了配电安全规程。国网安徽岳西县供... 详细信息

目前国家电网公司大力推进配电网智能化改造,传统的真空开关已无法满足配电网智能化要求,须全面更换新型带电压互感器的智能真空开关;而采取带电直接安装电压互感器引线会产生充电电流的安全问题,违反了配电安全规程。国网安徽岳西县供电公司运用旁路带电作业法,创新设计一种带电作业负载断路及启动工具连接器,构建“二次旁路”,使得电压互感器带电后再行安装引线。解决了带电安装柱上智能真空开关和电压互感器引线过程中产生充电电流的安全问题,同时也提高了带电作业效率,取得了良好的应用效果。

关键词：带电作业旁路带电作业法启动工具连接器

ABHD17C represses apoptosis and pyroptosis in hepatocellular carcinoma cells

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BIOCELL 2024年第9期48卷 1299-1310页

作者： LINPEI WANG jiawei WANG CHUNFENG shi WEI WANG JIAN WU Division of Hepatobiliary and Pancreatic Surgery Department of SurgeryThe First Affiliated HospitalZhejiang University School of MedicineHangzhou310030China Department of Hepatobiliary and Pancreatic Surgery The Second Affiliated Hospital of Fujian Medical UniversityQuanzhou362000China

Background:Alpha/beta hydrolase domain-containing protein 17C(ABHD17C)is a depalmitoylation enzyme that removes the S-palmitoylation of targeted *** hepatocellular carcinoma(HCC)cells SNU449 and Hep3B use ABHD17C as an oncogene;however,the exact mechanism of this action is yet ***:The expression of ABHD17C in liver cancer tissues was analyzed by bioinformatics,and the expression of ABHD17C in clinical liver cancer tissues and adjacent normal tissues was ***,the proliferative viability of HCC cells after overexpression or knockdown of ABHD17C was examined,and pyroptosis and apoptosis proteins were ***:ABHD17C was overexpressed in human HCC tissues as well as numerous HCC cell *** of ABHD17C caused reduced viability,cell cycle arrest,and defective invasion and migration in HCC cells,while overexpression of ABHD17C exhibited the opposite ***,we discovered that the knockdown of ABHD17C resulted in enhanced apoptotic and pyroptotic phenotypes of HCC cells,whereas overexpression of ABHD17C attenuated such ***:It suggests that ABHD17C contributes to HCC carcinogenesis,making it a promising target for medication treatment.

关键词： ABHD17C Hepatocellular carcinoma Apoptosis Pyroptosis

一株鸡源唾液乳杆菌的分离鉴定及其对育雏早期蛋鸡肠道健康的影响

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畜牧兽医学报 2024年第9期55卷 4161-4171页

作者：于秀菊胡燕姣刘佳悦王海东朱芷葳范阔海王蓉蓉段承昊石佳炜杨丽华山西农业大学动物医学学院太谷030801 山西农业大学生命科学学院太谷030801

旨在从健康海兰褐鸡肠道中分离鉴定乳酸菌,并研究其对育雏早期蛋鸡肠道健康的影响。本研究采用细菌培养技术、16S rRNA测序和牛津杯扩散法,分离、筛选、鉴定可产细菌素的乳酸菌菌株,检测其对高温、pH和胆盐的耐受性;动物试验选取240只1... 详细信息

旨在从健康海兰褐鸡肠道中分离鉴定乳酸菌,并研究其对育雏早期蛋鸡肠道健康的影响。本研究采用细菌培养技术、16S rRNA测序和牛津杯扩散法,分离、筛选、鉴定可产细菌素的乳酸菌菌株,检测其对高温、pH和胆盐的耐受性;动物试验选取240只1日龄健康、体重相近的海兰褐鸡,随机分为4组,每组60只鸡,包括对照组(C)、低剂量唾液乳杆菌CL09组(L)、中剂量唾液乳杆菌CL09组(M)和高剂量唾液乳杆菌CL09组(H),研究该乳酸菌菌株对育雏早期蛋鸡生长性能、免疫器官指数及肠道健康相关指标的影响。试验周期为21 d。结果表明:分离菌为可产细菌素的革兰阳性菌,结合16S rRNA鉴定结果将其命名为唾液乳杆菌CL09,该菌的无细胞上清液可抑制大肠杆菌、沙门菌、金黄色葡萄球菌和李斯特菌的生长。该菌的耐受温度为60℃,具有耐酸、耐胆盐的特性。动物试验结果显示:与对照组相比,灌服唾液乳杆菌CL09可以增加雏鸡体重和免疫器官重量;H组十二指肠、空肠的隐窝深度变化最为显著,L和M组十二指肠绒毛高度显著增加,且H组十二指肠绒毛呈“波浪形”;M和H组肠道干细胞标记基因Lgr 5和Bmi1表达水平升高极显著(P<0.001);H组的黏膜屏障基因Zo-1和Ocln的mRNA表达水平升高极显著(P<0.01);M组潘氏细胞标记性基因Lyz的mRNA表达水平最高。L、M和H组的杯状细胞标记基因Muc的mRNA表达水平均升高,且差异极显著(P<0.01)。综上所述,源自健康海兰褐鸡肠道的唾液乳杆菌CL09,通过促进雏鸡肠道干细胞分化为潘氏细胞和杯状细胞,增加绒毛高度,降低隐窝深度,从而增大肠道的黏膜面积。该菌具有调节育雏早期鸡肠道健康的良好特性,可作为益生菌的备选菌株。

关键词：蛋鸡唾液乳杆菌肠道健康绒毛高度隐窝深度

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基于传统性状的不同生产方式白术品质评价

中国实验方剂学杂志 2024年第1期30卷 43-52页

作者：钱锦秀王艺涵王亚鹏俞国良潘秋祥石佳伟陈美萍刘洋清鲁轮刘燕萌南铁贵康利平詹志来中国中医科学院中药资源中心北京100700 新昌县沙溪镇一滴水家庭农场浙江绍兴312500 新昌县农业局种植业推广中心浙江绍兴312500 新昌县沙溪镇事业综合服务中心浙江绍兴312570 磐安县中药产业发展促进中心浙江金华322305 康美(亳州)华佗国际中药城商业有限公司安徽亳州236800 河南中医药大学郑州450046

目的:基于传统品质评价经验,对种子直播、育苗后移栽、打顶与不打顶、生长年限差异等不同生产方式的白术进行品质比较研究。方法:使用游标卡尺测量不同生产方式白术的性状数据;采用番红固绿染色法制作不同生产方式白术的石蜡切片并观察... 详细信息

目的:基于传统品质评价经验,对种子直播、育苗后移栽、打顶与不打顶、生长年限差异等不同生产方式的白术进行品质比较研究。方法:使用游标卡尺测量不同生产方式白术的性状数据;采用番红固绿染色法制作不同生产方式白术的石蜡切片并观察显微结构;采用2020年版《中华人民共和国药典》浸出物测定法检测不同生产方式白术中水溶性及醇溶性浸出物的含量;采用硫酸-蒽酮法检测不同生产方式白术中水溶性总多糖含量;使用纤维分析仪检测不同生产方式白术中纤维类成分含量;采用超高效液相色谱法(UPLC)检测不同生产方式白术中单糖、低聚糖及部分次生代谢产物的含量,并结合主成分分析(PCA)及偏最小二乘法判别分析(PLS-DA)等多元统计分析方法,比较化学成分差异。结果:性状方面,直播不打顶3年生白术与古代本草所载“凤头鹤颈、甜味重、气清香”的优质白术接近,移栽后打顶3年生白术次之,而今市场流通率高的移栽打顶2年生白术普遍较肥壮,气味淡;显微方面,3年生的样品中木质部导管及纤维束排布形成2个明显的环状,与亳州及浙江主流栽培2年生白术比较,直播不打顶3年生及移栽后打顶3年生的白术样品中木纤维较多;化学成分方面,直播不打顶3年生白术中70%乙醇浸出物、果糖、葡萄糖、蔗糖、蔗果三糖、白术内酯Ⅰ、绿原酸、新绿原酸、隐绿原酸等成分的含量明显高于其他3种白术(P<0.05),移栽后打顶3年生白术中的纤维素类成分、70%乙醇浸出物、蔗糖、白术内酯Ⅰ、苍术酮等成分的含量明显高于当前主流的移栽打顶2年生白术(P<0.05),而直播不打顶3年生及移栽后打顶3年生的白术中水溶性浸出物、水溶性总多糖含量则显著低于主流移栽打顶2年生白术(P<0.05)。结论:当前主流生产方式下,人工干预过多使得白术大量富集多糖,产量提高,但甜味物质、清香型物质、纤维类物质的积累不足,影响了白术的品质。现行白术质量标准在引导白术高品质生产方面存在不足,建议修订白术质量标准,增补次生代谢产物定量分析,同时应加强仿野生白术的生产。

关键词：白术生产方式产地性状显微化学成分品质评价

Breathing dissipative soliton explosions in a bidirectional ultrafast fiber laser

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Photonics Research 2020年第10期8卷 1566-1572页

作者： YI ZHOU YU-XUAN REN jiawei shi KENNETH K.Y.WONG Department of Eectrical and Electronic Engineering The University of Rong KongHong KongChina

Soliton explosions,among the most exotic dynamics,have been extensively studied on parameter invariant stationary ***,the explosion dynamics are still largcly unexplored in breathing dissipative solitons as a dynamic solution to many nonlincar ***,we report on the first observation of a breathing dissipative soliton explosion in a nct-normal-dispersion bidirectional ultrafast fiber *** breathing soliton explos ionscould be stimulated by the soliton buildup process or alteration of polarization *** breathing soliton pairs with intensive repulsion that is sensitive to initial conditions can also be triggered by multiple soliton explosions in the soliton buildup process instead of being triggered by varying polarization *** high bchavior similarity also exists in the breathing soliton buildup and explosion process owing to the common gain and loss *** addition,dissipative rogue waves were detected in the breathing soliton explosion,and the collision of breathing soliton significantly enhanced the amplitude of rogue waves,which is characteristic of the breathing solitons in a bidirectional fiber *** results shed new insights into complex dissipative soliton dynamics.

关键词： dynamics. soliton dissipative

Hybrid optical parametrically-oscillating emitter at 1930 nm for volumetric photoacoustic imaging of water content

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eLight 2022年第1期2卷 68-74页

作者： jiawei shi Mingsheng Li Huajun Tang Jiqiang Kang Najia Sharmin Amir Rosenthal Kenneth K.Y.Wong Department of Electrical and Electronic Engineering The University of Hong Kong Pokfulam RoadHong KongChina.2 Department of Electrical EngineeringTechnion–Israel Institute of TechnologyTechnion City32000 HaifaIsrael Advanced Biomedical Instrumentation Centre Hong Kong Science ParkShatinNew TerritoriesHong KongChina

Water plays a vital role in biological metabolism and it would be essential to trace the water content non-invasively,such as leveraging the vibrational absorption peak of the O-H ***,due to the lack of an efficient laser source,it was challenging to image the water content in the deep tissue with micron-level spatial *** address this problem,we develop a high-power hybrid optical parametrically-oscillating emitter(HOPE)at 1930 nm,at which the vibrational absorption peak of the O-H bond *** maximum pulse energy is over 1.74μJ with a pulse repetition rate of 50 kHz and a pulse width of 15 *** employ this laser source in the optical-resolution photoacoustic microscopy(OR-PAM)system to image the water content in the phantom and the biological tissue in *** 1930-nm OR-PAM could map the water content in the complex tissue environment at high spatial resolution,deep penetration depth,improved sensitivity,and suppressed artifact signal of the lipid.

关键词： Fiber optical parametric oscillator Thulium-doped fiber laser Photoacoustic microscopy

A Novel Method to Improve the Physical Property and Biocompatibility of Decellularized Heart Valve Scaffold with Sericin and Polydopamine

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Journal of Bionic Engineering 2022年第4期19卷 1109-1123页

作者： Peng Bai Gangcheng Kong Weihua Qiao Yu Song Yixuan Wang jiawei shi Nan Zhang Chungeng Liu Chong Chu Tixiusi Xiong Ying Zhou Cuifen Lu Lin Wang Nianguo Dong Department of Cardiovascular Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430032China Department of Hepatobiliary and Pancreatic Surgery The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003China Research Center for Tissue Engineering and Regenerative Medicine Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Endocrinology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430032China Collaborative Innovation Center for Advanced Organic Chemical Materials Co-constructed by the Province and Ministry Hubei UniversityWuhan 430062China Department of Clinical Laboratory Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

Cardiac valve replacement is an effective method to treat valvular heart *** valves used routinely in clinic still have *** our study,we explored a novel method to modify the performance of Decellularized Heart Valve(DHV)*** decellularized porcine aortic valve was prepared using sequential hydrophile and lipophile solubilization *** sericin was extracted from silk fibroin-deficient silkworm cocoon by lithium bromide ***,DHV was immersed in sericin solution to produce the sericin–DHV composite ***,we modified the DHV by making a Polydopamine(PDA)coating on the DHV first and then binding the *** physical properties and biological compatibility of our composite scaffold were assessed in vitro and in *** were successfully prepared,combined to DHV and improved its *** coating further promoted the combination of sericin on DHV and improved the physical properties of *** decay rate of our modified valve scaffold was decreased in vivo and it showed good compatibility with *** conclusion,our modification improved the physical properties and biocompatibility of the valve *** combination of PDA and sericin promoted the recellularization of decellularized valves,showing great potential to be a novel artificial valve.

关键词： Decellularized heart valve Sericin Polydopamine Biocompatibility