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离心超重力油水分离器流场特性的数值模拟研究

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石油机械 2024年第2期52卷 107-114页

作者：栾智勇安申法高生伟王阳朱秀娟于春辉于滨中国石化胜利油田分公司石油工程技术研究院中国石化胜利油田分公司孤岛采油厂

随着油田开采逐渐进入高含水期,对油水分离器的性能要求也愈发严格,现有油水分离器已很难达到分离要求,油水分离领域亟需新的研究进展。通过数值模拟的方法对一种新型离心超重力油水分离器流场特性进行了研究。从流动参数、结构参数以... 详细信息

随着油田开采逐渐进入高含水期,对油水分离器的性能要求也愈发严格,现有油水分离器已很难达到分离要求,油水分离领域亟需新的研究进展。通过数值模拟的方法对一种新型离心超重力油水分离器流场特性进行了研究。从流动参数、结构参数以及物性参数3个方面探究不同参数对分离器分离性能及流场特性的影响规律。研究结果表明:各含水体积分数情况下该分离器分离效果都较好,油出口分离效率随着含水体积分数上升而减小,且含水体积分数较高时水出口的含油量较低;随着入口流量的增大,水出口含油量不断增大,油出口分离效率先减小后基本不变;随着电机转速的增大油出口分离效率先增大后基本不变,电机转速为500 r/min时,油出口分离效率为82%,电机转速为1500 r/min时,油出口分离效率增大至97%;在模拟范围内叶片数量与分离效果呈正相关;油密度和油黏度与分离器分离效果均呈负相关,其值越大分离效果越差。研究结果可为离心超重力油水分离器的实际应用提供理论指导。

关键词：油水分离器离心超重力流场特性分离性能含水体积分数电机转速

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AN ADAPTIVE-WEIGHTED TWO-DIMENSIONAL DATA AGGREGATION ALGORITHM FOR CLUSTERED WIRELESS SENSOR NETWORKS

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Journal of Electronics(China) 2013年第6期30卷 525-537页

作者： Zhang Junhu zhu xiujuan Peng Hui School of Information Science & Technology Qingdao University of Science & Technology College of Computer Engineering Qingdao Technological University School of Information Renmin University of China

In this paper,an Adaptive-Weighted Time-Dimensional and Space-Dimensional(AWTDSD) data aggregation algorithm for a clustered sensor network is proposed for prolonging the lifetime of the network as well as improving the accuracy of the data gathered in the *** contains three phases:(1) the time-dimensional aggregation phase for eliminating the data redundancy;(2) the adaptive-weighted aggregation phase for further aggregating the data as well as improving the accuracy of the aggregated data; and(3) the space-dimensional aggregation phase for reducing the size and the amount of the data transmission to the base *** utilizes the correlations between the sensed data for reducing the data transmission and increasing the data accuracy as *** result shows that AWTDSD can not only save almost a half of the total energy consumption but also greatly increase the accuracy of the data monitored by the sensors in the clustered network.

关键词： Data aggregation Adaptive-weighted aggregation Clustered Wireless Sensor Networks(WSNs) Linear regression Data accuracy Energy consumption Lempel-Ziv-Welch (LZW)

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不同水肥处理对武都花椒抗寒性的影响

耕作与栽培 2024年第4期44卷 25-31页

作者：张晓娜马瑞真朱秀娟王林林陇南师范高等专科学校农林技术学院甘肃陇南742500

为揭示不同水肥管理下武都花椒幼苗的抗寒性差异,以武都花椒为试验材料,采用土壤水分和施肥量四因素四水平试验设计,土壤田间持水量(FWC)设置为25%、45%、65%、85%,肥料采用氮磷钾配施,施肥水平设置为氮肥(0、90、180、360 kg/hm~2),磷... 详细信息

为揭示不同水肥管理下武都花椒幼苗的抗寒性差异,以武都花椒为试验材料,采用土壤水分和施肥量四因素四水平试验设计,土壤田间持水量(FWC)设置为25%、45%、65%、85%,肥料采用氮磷钾配施,施肥水平设置为氮肥(0、90、180、360 kg/hm~2),磷肥(0、50、100、200 kg/hm~2),钾肥(0、90、180、360 kg/hm~2),系统地观测了不同水肥组合下,武都花椒幼苗的抗寒性指标变化,并利用隶属函数法对各水肥处理下武都花椒幼苗的抗寒能力进行了排序。结果表明,H11(N_(180)P_(100)K_(180)+65%FWC)处理下,武都花椒幼苗的抗寒综合值最优,且施肥处理显著高于不施肥处理。说明适宜的土壤水分和施肥量配比能有效提高武都花椒幼苗的抗寒综合值。

关键词：花椒水肥处理功能指标抗寒性

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橄榄苦苷对LPS诱导小鼠视网膜损伤的保护作用

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中国兽医学报 2024年第5期44卷 1019-1025,1031页

作者：陈文东朱秀娟叶文斌王昱黄新异邸多隆徐永平陇南师范高等专科学校农林技术学院甘肃成县742500 中国科学院兰州化学物理研究所、中国科学院西北特色植物资源化学重点实验室和甘肃省天然药物重点实验室甘肃兰州730000 西北农林科技大学动物医学学院陕西杨凌712100

为研究橄榄苦苷(oleuropein, OP)对LPS诱导小鼠视网膜损伤的保护作用,将SPFKM小鼠随机分成5组,分别为LPS模型组(LPS)、对照组(Control)、OP高、中、低质量浓度(800、400、200 mg/kg)处理组,连续灌胃21 d,从第14天开始,各组小鼠灌胃30 mi... 详细信息

为研究橄榄苦苷(oleuropein, OP)对LPS诱导小鼠视网膜损伤的保护作用,将SPFKM小鼠随机分成5组,分别为LPS模型组(LPS)、对照组(Control)、OP高、中、低质量浓度(800、400、200 mg/kg)处理组,连续灌胃21 d,从第14天开始,各组小鼠灌胃30 min后,在异氟烷气体辅助麻醉下,小鼠腹腔注射2.0 mg/kg LPS,对照组小鼠腹腔注射2.0 mg/kg生理盐水,连续7 d,建模完成后,检测小鼠血清中超氧化物歧化酶(superoxide dismutase, SOD)、过氧化氢酶(catalase, CAT)、谷胱甘肽过氧化物酶(glutathione peroxidase, GSH-Px)活性及白细胞介素-1β(IL-1β)和肿瘤坏死因子-α (TNF-α)含量,采用免疫组化SP法检测甘油三脂脂肪酶(PNPLA2)在小鼠视网膜各层结构上的分布特点并观察视网膜组织形态学变化。结果显示,OP使小鼠血清中SOD、CAT和GHS-Px活性显著升高(P<0.01),IL-1β和TNF-α含量下降(P<0.05),视网膜中PNPLA2表达量升高(P<0.05,P<0.01);OP各剂量组均能提高SOD、CAT和GHS-Px活性,降低IL-1β和TNF-α含量,改善LPS对小鼠视网膜的病理损伤,提高视网膜中PNPLA2表达量,具有保护LPS诱导视网膜损伤的作用。

关键词：橄榄苦苷脂多糖视网膜小鼠

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陇南市花椒产业发展现状问题及对策

南方农业 2024年第5期18卷 163-166页

作者：张晓娜朱秀娟王林林马瑞真陇南师范高等专科学校农林技术学院甘肃陇南742500

花椒是原产于我国的木本油料树种之一,具有较高的经济价值,在食用、药用、保健等方面都具有十分显著的效果,自古以来深受人们的喜爱。甘肃陇南得天独厚的地形和气候条件,成为了花椒最佳适生区之一。陇南武都花椒栽培历史悠久,栽培范围广... 详细信息

花椒是原产于我国的木本油料树种之一,具有较高的经济价值,在食用、药用、保健等方面都具有十分显著的效果,自古以来深受人们的喜爱。甘肃陇南得天独厚的地形和气候条件,成为了花椒最佳适生区之一。陇南武都花椒栽培历史悠久,栽培范围广,面积大,是当地主要的经济支柱产业之一,也是“中国国家地理标志产品”,获得了“甘肃省著名商标”称号,陇南武都花椒产业充分带动了当地的发展,并被认定为“第三批中国特色农产品优势区”。为了更加科学地规划武都花椒产业发展,为陇南武都花椒产业布局发展提供一定的参考依据,通过对陇南武都花椒产业发展现状、目前存在的主要问题及未来发展建议3个方面进行了总结分析,并在此基础上提出了促进甘肃陇南花椒产业发展的对策建议。

关键词：花椒发展现状存在问题发展建议甘肃省陇南市

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纳豆激酶粗提物泡腾片的制备及其质量评价

中国食品添加剂 2024年第3期35卷 206-212页

作者：孙娜何九军朱秀娟白艳艳马娟陇南师范高等专科学校农林技术学院陇南746005 陇南特色农业生物资源研究开发中心陇南746005

为开发功能性纳豆激酶粗提物泡腾片,本研究以感官评价为考察指标,采用单因素和Box-Behnken响应面试验对纳豆激酶粗提物泡腾片制备工艺进行了优化。结果表明:纳豆激酶粗提物泡腾片的最佳制备工艺为崩解剂比例(酸源碱源)1.2∶1、崩解剂... 详细信息

为开发功能性纳豆激酶粗提物泡腾片,本研究以感官评价为考察指标,采用单因素和Box-Behnken响应面试验对纳豆激酶粗提物泡腾片制备工艺进行了优化。结果表明:纳豆激酶粗提物泡腾片的最佳制备工艺为崩解剂比例(酸源碱源)1.2∶1、崩解剂添加量70%、纳豆激酶粗提物添加量15%、麦芽糊精添加量10%、甜菊糖苷添加量0.9%、聚乙烯吡咯烷酮添加量2.5%,聚乙二醇8000添加量2.5%。在此条件下,所制泡腾片片剂表面光滑、口感良好、具有纳豆激酶粗提物独特气味,感官评价分为92.5±0.012,纳豆激酶活力为(298.20±1.15)U/g,所有质量指标均符合中国药典规定。

关键词：纳豆激酶粗提物泡腾片制备响应面

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花椒水肥耦合效应研究现状及展望

防护林科技 2024年第2期 74-77,82页

作者：张晓娜朱秀娟王林林马瑞真陇南师范高等专科学校农林技术学院甘肃陇南742500

文章综述了花椒水肥耦合效应的研究现状,分析了水肥耦合对花椒植株功能性状的影响,探讨了土壤肥力与植物养分利用效率对水肥耦合的响应规律及对花椒产量和品质的影响。为提高我国花椒培育技术水平,集成基于水肥耦合的花椒高效水肥管理... 详细信息

文章综述了花椒水肥耦合效应的研究现状,分析了水肥耦合对花椒植株功能性状的影响,探讨了土壤肥力与植物养分利用效率对水肥耦合的响应规律及对花椒产量和品质的影响。为提高我国花椒培育技术水平,集成基于水肥耦合的花椒高效水肥管理经营技术体系,未来还需加强以下几个方面的研究:一是结合花椒不同发育阶段及物候期对水肥需求的规律进行深入研究;二是深化水肥耦合对花椒产量和质量提升的影响研究;三是揭示水肥耦合对花椒不同发育阶段的影响规律,合理规划不同阶段的水肥配比。

关键词：花椒水肥耦合功能性状产量

Early assessment of the safety and immunogenicity of a third dose(booster)of COVID-19 immunization in Chinese adults

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Frontiers of Medicine 2022年第1期16卷 93-101页

作者： Yuntao Zhang Yunkai Yang Niu Qiao Xuewei Wang Ling Ding xiujuan zhu Yu Liang Zibo Han Feng Liu Xinxin Zhang Xiaoming Yang China National Biotec Group Company Limited Beijing 100024China Shanghai Institute of Hematology State Key Laboratory of Medical GenomicsNational Research Center for Translational Medicine at ShanghaiRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China Beijing Institute of Biological Products China National Biotec Group Company LimitedBeijing 100176China National Vaccine and Serum Institute China National Biotec Group Company LimitedBeijing 101111China Department of Infectious Diseases Research Laboratory of Clinical VirologyRuijin Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200025China

Inducing durable and effective immunity against severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)via vaccination is essential to combat the current pandemic of coronavirus disease 2019(COVID-19).It has been noticed that the strength of anti-COVID-19 vaccination-induced immunity fades over time,which calls for an additional vaccination regime,as known as booster immunization,to restore immunity among previously vaccinated *** we report a pilot open-label trial of a third dose of BBIBP-CorV,an inactivated SARS-CoV-2 vaccine(Vero cell),on 136 participants aged between 18 to 63 *** and immunogenicity in terms of neutralizing antibody titers and cytokine/chemokine responses were analyzed as the main endpoint until day *** systemic reactogenicity was either absent or mild,SARS-CoV-2-specific neutralizing antibody titers rapidly arose in all participants within 4 weeks,surpassing the peak antibody titers elicited by the initial two-dose immunization *** increases of cellular immunity-associated cytokines and chemokines were also detected in the majority of participants after the third ***,in an exploratory study,a newly developed recombinant protein vaccine,NVSI-06-08(CHO Cells),was found to be safe and even more effective than BBIBP-CorV in eliciting humoral immune responses in BBIBP-CorV-primed ***,these results indicate that a third immunization schedule with either homologous or heterologous vaccine showed favorable safety profiles and restored potent SARS-CoV-2-specific immunity,providing support for further trials of booster vaccination in larger populations.

关键词： COVID-19 SARS-CoV-2 vaccine immunization booster immunization

Data collection of wireless sensor network based on trajectory optimization of laser-charged UAV

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High-Confidence Computing

High-Confidence Computing 2024年第2期4卷 116-128页

作者： Chuanwen Luo Jian Zhang Jin Qian Yi Hong Zhibo Chen Yunan Hou xiujuan Zhang Yuqing zhu School of Information Science and Technology Beijing Forestry UniversityBeijing 100083China Engineering Research Center for Forestry-Oriented Intelligent Information Processing of National Forestry and Grassland Administration Beijing 100083China College of Information Engineering Taizhou UniversityTaizhou 225300China School of Computer Science Qufu Normal UniversityRizhao 276826China Research Center of Applied Mathematics and Machine Intelligence Zhejiang LabHangzhou 311121China Department of Computer Science California State UniversityCA 90032USA

Unmanned Aerial Vehicle(UAV)can be used as wireless aerial mobile base station for collecting data from sensors in UAV-based Wireless Sensor Networks(WSNs),which is crucial for providing seamless services and improving the performance in the next generation wireless ***,since the UAV are powered by batteries with limited energy capacity,the UAV cannot complete data collection tasks of all sensors without energy replenishment when a large number of sensors are deployed over large monitoring *** overcome this problem,we study the Real-time Data Collection with Lasercharging UAV(RDCL)problem,where the UAV is utilized to collect data from a specified WSN and is recharged using Laser Beam Directors(LBDs).This problem aims to collect all sensory data from the WSN and transport it to the base station by optimizing the flight trajectory of UAV such that realtime data performance is ensured It has been proven that the RDCL problem is *** address this,we initially focus on studying two sub-problems,the Trajectory Optimization of UAV for Data Collection(TODC)problem and the Charging Trajectory Optimization of UAV(CTO)problem,whose objectives are to find the optimal flight plans of UAV in the data collection areas and charging areas,*** we propose an approximation algorithm to solve each of them with the constant ***,we present an approximation algorithm that utilizes the solutions obtained from TODC and CTO problems to address the RDCL ***,the proposed algorithm is verified by extensive simulations.

关键词： Wireless sensor networks Laser-charged UAV Trajectory optimization Data collection