National Engineering Research Center Research Articles

Comparison of 4 agar gel immunodiffusion kits for serologic detection of equine infectious anemia virus antibodies.

Using 85 sera collected from horses that had been experimentally infected with equine infectious anemia virus (EIAV) and 200 field sera collected from racehorses in Japan, we compared 4 agar gel immunodiffusion (AGID) kits for serologic detection of EIAV antibodies from Idexx, VMRD, IDvet, and the National Engineering Research Center of Veterinary Biologics, China (NECVB). The positive control lines were sufficiently clear in all kits for evaluation to be made, with slight differences in sharpness: NECVB was the sharpest, followed by VMRD, IDvet, and Idexx. The test results for all 285 samples agreed among the 4 kits, with 62 positives and 223 negatives. The sensitivities and specificities of VMRD, IDvet, and NECVB compared with the Idexx kit were 100%, and the kappa coefficient values between the kits were 1.0 for all combinations. We concluded that the testing capacity of these 4 kits was virtually identical.

Erratum to: Experimental Study on the Wavelengths of Two-Dimensional and Three-Dimensional Freak Waves

In the original publication of the article (Cui and Pan, 2023), the organization “National Engineering Research Center for Port Hydraulic Construction Technology, M.O.T., Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China” should be corrected as: “National Engineering Research Center of Port Hydraulic Construction Technology, Tianjin Research Institute for Water Transport Engineering, M.O.T., Tianjin 300456, China”.

Facile Synthesis and High‐Value Utilization of Ammonia

Comprehensive SummaryAmmonia is a key component in fertilizer and the carbon‐free hydrogen carrier. Catalytic ammonia synthesis and utilization have played a central role in the development of chemical engineering. The industrial production of ammonia remains dependent on the energy‐ and carbon‐intensive Haber–Bosch process. A major effort has been devoted to developing robust and efficient catalysts, as well as alternative benign processes. Herein, we detail our endeavors that develop the ammonia synthesis and decomposition catalysts, and utilize the ammonia energy. We firstly discuss the catalysts for ammonia synthesis via dissociative and associative process, and the regulation of catalysts’ properties. Then, we review the burgeoning electrocatalytic nitrogen reduction process, focusing on the enhanced catalytic performances by the regulation of the catalysts and the electrode. Additionally, we provide a novel high‐value utilization of ammonia to achieve the “zero‐carbon” circular economy. The promising catalysts, reactors, and ammonia energy systems have been discussed in detail. We end this Account that offers future research directions and prospects of ammonia. What is the most favorite and original chemistry developed in your research group?Ammonia synthesis catalysts and ammonia energy.How do you get into this specific field? Could you please share some experiences with our readers?I have received my B.S. in 1997. After graduation from college, I have joined Prof. Kemei Wei's group at the National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University. Since 1972, our group has dedicated to the efficient industrial synthesis and high‐value utilization of ammonia. So, I have done much work in this field. I think that the research work should match with the major national demands and global challenges. The researcher should focus on cutting‐edge discoveries and creative work.How do you supervise your students?When the students come in our group, I teach them the norms andstandards of academic research and writing. After that, I would formulate the research project based on their motivations, aspirations, and academic background. If they have any problems during the project, I will help them overcome. We discuss termly on their research methods and evaluate their research results. I also encourage the students to prepare in advance for the next steps in their career or further study.What is the most important personality for scientific research?Research integrity.What are your hobbies? What's your favorite book(s)?I like playing badminton and table tennis. My favorite books are history and industry development plan.How do you keep the balance between research and family?The understanding and support from the family are very important. I have increased my efficiency and productivity, and tried alternative schedules.

Distributed optimization for discrete-time multiagent systems with nonconvex control input constraints and switching topologies* *Projectsupported by the National Engineering Research Center of Rail TransportationOperation and Control System, Beijing Jiaotong University (GrantNo. NERC2019K002).

This paper addresses the distributed optimization problem of discrete-time multiagent systems with nonconvex control input constraints and switching topologies. We introduce a novel distributed optimization algorithm with a switching mechanism to guarantee that all agents eventually converge to an optimal solution point, while their control inputs are constrained in their own nonconvex region. It is worth noting that the mechanism is performed to tackle the coexistence of the nonconvex constraint operator and the optimization gradient term. Based on the dynamic transformation technique, the original nonlinear dynamic system is transformed into an equivalent one with a nonlinear error term. By utilizing the nonnegative matrix theory, it is shown that the optimization problem can be solved when the union of switching communication graphs is jointly strongly connected. Finally, a numerical simulation example is used to demonstrate the acquired theoretical results.

Stimuli‐Responsive Nanotheranostics

Stimuli‐Responsive Nanotheranostics

Preface

It is our great pleasure to welcome you to the 2021 5th International Workshop on Advanced Algorithms and Control Engineering (IWAACE 2021) on February 26-28, 2021, which is planned to held in Zhuhai, China. However, due to the spread of COVID-19, many countries have strict restrictions to travel aboard. Meanwhile, the safety of the participants is always the priority. We made a hard decision to hold the conference online.IWAACE 2021 is to bring together innovative academics and industrial experts in the field of Advanced Algorithms and Control Engineering to a common forum. The primary goal of the conference is to promote research and developmental activities in Advanced Algorithms and Control Engineering and another goal is to promote scientific information interchange between researchers, developers, engineers, students, and practitioners working all around the world. The conference will be held every year to make it an ideal platform for people to share views and experiences in Algorithms and Control Engineering and related areas.This scientific event brings together more than 120 national and international researchers. During the conference, the conference model was divided into three sessions, including oral presentations, keynote speeches, and online Q&A discussion. In the first part, some scholars, whose submissions were selected as the excellent papers, were given about 5-10 minutes to perform their oral presentations one by one. Then in the second part, keynote speakers were each allocated 30-45 minutes to hold their speeches.In the second part, we invited four professors as our keynote speakers. Prof. Xinguo Yu, the dean and Professor of CCNU Wollongong Joint Institute and Professor of National Engineering Research Center for E-Learning Adjunct professor of University of Wollongong, Australia, performed a speech: Automatic Problem Solving for Basic Education. And then we had Assoc. Prof. Xiang Zhou from School of Data Science, City University of Hong Kong, China. He presented a talk: Machine Learning and Control Theory. He introduced the recent ongoing joint work with Alain Bensoussan and Phillip Yam about a new numerical method for computing the gradient of the value function. Dr. Deepak Kumar Jain, School of Automation, Chongqing University of Posts and Telecomunications, Chongqing, China as our third keynote speakers. Our finale keynote speakers, Dr. Badrul Hisham bin Ahmad, Universiti Teknikal Malaysia Melaka / Faculty of Electronics and Computer Engineering, Malaysia was invited to present his talk Design and Development of VHF FRONT-END for lightning interferometer system. Their insightful speeches had triggered heated discussion in the third session of the conference. Every participant praised this conference for disseminating useful and insightful knowledge.The proceedings are a compilation of the accepted papers and represent an interesting outcome of the conference. Topics include but are not limited to the following areas: Communication Technology and Applications, Computer Engineering, Network Engineering and Application Technology, Intelligent System, Electronics and Electrical Engineering and more related topics. All the papers have been through rigorous review and process to meet the requirements of International publication standard.We would like to acknowledge all of those who supported IWAACE 2021. The help and contribution of each individual and institution was instrumental in the success of the conference. In particular, we would like to thank the organizing committee for its valuable inputs in shaping the conference program and reviewing the submitted papers.The Committee of IWAACE 2021List of Committee member is available in this pdf.

What is the Advantage for Bacteria to Use Polycyclic Aromatic Hydrocarbons as Carbon Source under Aerobic Condition?

Shaomin Yan and Guang Wu* Author Affiliations National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Biomass Engineering Technology Research Center, Guangxi Key Laboratory of Bio-refinery, Guangxi Academy of Sciences, China Received: August 31, 2020 | Published: September 15, 2020 Corresponding author: Guang Wu, National Engineering Research Center for Non-Food Biorefinery, State Key Laboratory of Non-Food Biomass and Enzyme Technology, Guangxi Biomass Engineering Technology Research Center, Guangxi Key Laboratory of Bio-refinery, Guangxi Academy of Sciences, 98 Daling Road, Nanning, 530007, China DOI: 10.26717/BJSTR.2020.30.004951

Establishment and Application of a Predictive Model for Gefitinib-Induced Severe Rash Based on Pharmacometabolomic Profiling and Polymorphisms of Transporters in Non-Small Cell Lung Cancer

Background: Gefitinib-induced rash is a sign of favorable outcomes for patients with non-small cell lung cancer (NSCLC). However, whether patients with more severe rash, the more survival benefits obtained from gefitinib is still unknown, and as for the severe rash a risk factor prediction model is needed. Method: A total of 346 patients were enrolled in this study. Gefitinib/metabolites and 9 gene polymorphisms, were determined by pharmacometabolomic and pharmacogenomics methods in an exploratory cohort. External cohort patients were enrolled to validate this model. Findings: The survival for patients with rash were significantly higher than patients without rash (p=0.0002, p= 0.0089)，but no difference was found between grade 1/2 or grade 3/4. Only the concentration of gefitinib, but not its metabolites, was associated with severe rash, and the cutoff value of gefitinib was 204.6 ng/mL conducted by ROC curve (AUC=0.685). A predictive model for severe rash was established: gefitinib concentration (OR = 11.523, 95%CI=2.898-64.016, p = 0.0016), SLC22A8 rs4149179(CT vs CC, OR = 3.156, 95%CI = 0.958-11.164, p = 0.0629), SLC22A1 rs4709400(CG vs CC, OR = 10.267, 95%CI = 2.067-72.465, p = 0.0087; GG vs CC, OR=5.103, 95%CI=1.032-33.938, p=0.061). This model was confirmed in validation cohort with an excellent predictive ability (AUC = 0.749, 95%CI = 0.710-0.951). Interpretation: Our finding demonstrated that patients developed any grade rash predicted improved survival, the gefitinib concentration and polymorphisms of SLC22A8 and SLC22A1 were recommended to manage severe rash. However, our model would require further validation in a biomarker-led trial. Trial Registration: This study was registered at ClinicalTrials.gov (NCT01994057). Funding Statement: This study was funded by the National Natural Science Foundation of China (Grant Nos. 81730103, 81320108027, 81573507, 81473283, 81173131 and 81973398), The National Key Research and Development Program (Grant Nos. 2017YFC0909303 and 2016YFC0905001), Guangdong Provincial Key Laboratory of Construction Foundation (Grant No. 2017B030314030), Science and Technology Program of Guangzhou（201607020031）, National Engineering and Technology Research Center for New drug Druggability Evaluation (Seed Program of Guangdong Province (No. 2017B090903004) and the 111 project (Grant: B16047). Declaration of Interests: The authors declare no conflict of interest. Ethics Approval Statement: The study was approved by Human Ethics of Sun Yat-sen University Cancer Center (B2013-038-1) and conducted in accordance with the principles of the Declaration of Helsinki and the Good Clinical Practice Guidelines of the International Conference on Harmonization.

Experimental and CFD Investigations of Biomass Thermochemical Conversion: Fundamental Mechanisms, Practical Application, and Advanced Design

AbstractNo abstract.

Aptamer-Anchored Rubrene-Loaded Organic Nanoprobes for Cancer Cell Targeting and Imaging

Aptamer-Anchored Rubrene-Loaded Organic Nanoprobes for Cancer Cell Targeting and Imaging

Angiopoietin-2 Induces Angiogenesis <i>via</i> Exosomes in Human Hepatocellular Carcinoma

Background: Hepatocellular carcinoma (HCC) is the most common primary liver cancer and is a highly vascularized solid tumor. Angiopoietin-2 (ANGPT2) has been described as an attractive target for antiangiogenic therapy. The expression of ANGPT2 in tumor-derived exosomes remains unknown. Methods: We detected the ANGPT2 expression in HCC-derived exosomes by the immunoblotting, enzyme-linked immunosorbent assay and immunogold labeling, then observed exosomal ANGPT2 internalization and recycling by the confocal laser scanning microscopy. We used two HCC cell lines (Hep3B and MHCC97H) to overexpress ANGPT2 by lentivirus infection or knockdown ANGPT2 by the CRISPR/Cas system, then isolated exosomes to coculture with human umbilical vein endothelial cells (HUVECs) and observed the angiogenesis by the Matrigel microtubule formation assay, transwell migration assay, wound healing assay, cell counting kit-8 assay, immunoblotting and in vivo tumorigenesis assay. Findings: We found that HCC-derived exosomes carried ANGPT2 and delivered it into HUVECs by exosome endocytosis, this delivery led to a notable increase in angiogenesis by a Tie2-independent pathway. Concomitantly, we observed that HCC cell-secreted exosomal ANGPT2 was recycled by recipient HUVECs and might be reused. In addition, the CRISPR-Cas systems to knock down ANGPT2 significantly inhibited the angiogenesis induced by HCC cell-secreted exosomal ANGPT2, and obviously suppressed the epithelial-mesenchymal transition activation in HCC. Interpretation: These results reveal a novel pathway of tumor angiogenesis induced by HCC cell-secreted exosomal ANGPT2 that is different from the classic ANGPT2/Tie2 pathway. This way may be a potential therapeutic target for antiangiogenic therapy. Funding Statement: National Natural Science Foundation of China (81672420, 81702406, 81673433); National Engineering and Technology Research Center for New drug Druggability Evaluation (Seed Program of Guangdong Province, 2017B090903004); Key Laboratory of Malignant Tumor Molecular Mechanism and Translational Medicine of Guangzhou Bureau of Science and Information Technology. Declaration of Interests: The authors declare that they have no competing interests. Ethics Approval Statement: Tissue and serum samples were collected from patients after obtaining informed consent in accordance with a protocol approved by the Ethics Committee of Sun Yat-sen Memorial Hospital (Guangzhou, China). All experimental procedures involving animals were performed according to the Guide for the Care and Use of Laboratory Animals (National Institutes of Health publication No. 85-23, revised 2011) and in accordance with the institutional ethical guidelines for animal experiments.

Research of Polymer Melt Stability by Vibrating Based on Synergetics

A self-developed experimental facility by the national engineering research center of novel equipment for polymer processing, named as a coaxial barrel dynamic rheometer, is used to test the Weissenberg number and the first and the second normal stress difference coefficient for polymer melt and the effect of vibration parameters on them in vibration shear field. At the same time, it can be used the synergetics analysis method into explain the effects of elasticity stability of polymer melts. The testing principle of the rheometer is to transform the shear power of a motor and extrusion pressure in shear field to melt viscosity. The shear field can simulate orthogonal superposed vibratory flow, boundary vibrating pressure flow, and their combined flow. By comparing equation predictions with experimental results, a satisfied-qualitatively and reasonable-quantitatively predictive ability is shown, which verifies the work of mathematical derivations.

Euphausia superba swarm characteristics in the South Orkney Islands by the echogram of acoustic survey

PDF HTML阅读 XML下载 导出引用 引用提醒 基于声学映像的南奥克尼群岛海域南极磷虾集群特征 DOI: 作者: 作者单位: 1. 上海海洋大学海洋科学学院, 上海 201306;2. 上海海洋大学大洋渔业资源可持续开发教育部重点实验室, 上海 201306;3. 上海海洋大学国家远洋渔业工程技术研究中心, 上海 201306;4. 中国水产科学院南海水产研究所, 广东 广州, 510300 作者简介: 王腾(1989-),博士研究生,研究方向为渔业资源声学评估.E-mail:twangshanghao@163.com 通讯作者: 中图分类号: S931 基金项目: 国家自然科学基金项目（41776185，41606210）；国家重点研发计划项目（2018YFC1406801）；农业部南极海洋生物资源开发利用项目（D8002-18-0097）. Euphausia superba swarm characteristics in the South Orkney Islands by the echogram of acoustic survey Author: Affiliation: 1. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;2. The Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306, China;3. National Engineering Research Center for Oceanic Fisheries, Shanghai Ocean University, Shanghai 201306, China;4. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:为确定南奥克尼群岛海域南极磷虾（）集群特征，本研究根据2017年3-4月我国南极磷虾探捕项目采集的断面声学数据，使用通用声学数据后处理软件，研究了该海域的南极磷虾集群特征信息。本研究共检测并提取了2539个磷虾集群的高度、长度、分布深度、集群间距、集群面积及集群磷虾密度信息，其中白天集群1389个，夜晚集群1150个。通过集群特征值的统计，将该海域集群分为3类。聚类A的虾群密度最大[（19.24±27.00） ind/m3]，聚类B的虾群最深[（174.74±53.30） m]，聚类C的虾群面积最大[（2868.62±2149.75） m2]。聚类A和聚类B的集群长度无显著性差异（>0.05）。A类集群主要分布在南奥克尼群岛北部及西北部的深水区，水深>1000 m。B类和C类集群在整个调查海域均有分布，其中B类集群多分布在群岛大陆架海域，水深<200 m。不同区域的集群分布信息不同，离岛屿最远的东西两个断面集群较少，分布比较分散。本研究结果表明大部分的磷虾个体位于少数的大型集群中，集群磷虾密度和集群间距间存在正相关关系；未来通过磷虾集群与外界因子（环境因子，捕食者）相关性的研究，可以帮助我们更为准确地了解集群结构与形成机制，预测磷虾资源分布。 Abstract:Knowledge about swarm dynamics and underlying causes is essential to understand the ecology and distribution of . We examined swarms across the South Orkney Islands in March and April 2017 using the Simrad EK60 (38 and 120 kHz) echosounder, concurrent with net sampling. The acoustic data were analyzed by applying a swarm-identification algorithm, and then filtering out all non-krill targets. A total of 2539 krill swarms with swarm characters including swarm height and length, packing density, swimming depth, and inter-swarm distance were extracted, of which 1389 were daytime swarms and 1150 night swarms. Compared with those of the night swarms, krill aggregated in deep waters during the daytime with lower packing density and smaller inter-swarm distance. There were significant differences between day and night krill swarms. Through the multivariate analysis, the krill swarms were divided into three categories, which differed in both their dimensions and packing density. Group A presented the highest swarm density[(19.24±27.00) ind/m3], Group B swarms presented the deepest distribution depth[(174.74±53.30) m], Group C presented the largest swarm area[(2868.62±2149.75) m2] with the longest swarm length[(258.76±322.88) m]. There was no significant difference in swarm length between Groups A and B and no significant difference in swarm depth between Groups A and C. Group A swarms were mainly distributed in deep water areas in the north and northwest regions of the South Orkney Islands at a depth of >1000 m, and mainly occurred during daytime. Groups B and C swarms were distributed throughout the survey area; Group B swarms were aggregated in the continental shelf at a water depth of <200 m. The results suggest that the majority of krill were contained within a minor fraction of the total number of swarms, and there was a positive correlation between packing density and inter-swarm distance. The results also provide valuable information on the distribution of krill swarms in this area and basic data for the current feedback krill resource management of Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR). In the future, studies on the correlation between krill swarms and external factors, such as environmental factors and predators, can help understand the swarm structure and formation mechanism more accurately and predict the distribution of krill resources. 参考文献 相似文献 引证文献

Effects of coal rank on physicochemical properties of coal and on methane adsorption

For the thorough research on coal metamorphism impact on gas adsorption capacity, this paper collected and summarized parameters of experimental adsorption isotherms, coal maceral, proximate analysis and ultimate analysis obtained from National Engineering Research Center of Coal Gas Control and related literatures at home and abroad, systematically discussed the coal rank effect on its physicochemical properties and methane adsorption capacity, in which the coal rank was shown in Vitrinite reflectance, furthermore, obtained the Semi-quantitative relationship between physicochemical properties of coal and methane adsorption capacity.

Effect of enrichment of unicellular algae food on the nutritional quality of Acartia pacifica

PDF HTML阅读 XML下载 导出引用 引用提醒 单胞藻饵料强化对太平洋纺锤水蚤营养成分的影响 DOI: 作者: 作者单位: 1. 浙江海洋大学海洋科学学院, 国家海洋设施养殖工程技术研究中心, 浙江 舟山 316022;2. 浙江省海洋水产研究所, 浙江 舟山 316000 作者简介: 景斐(1992-),女,硕士研究生,专业方向为海洋生态学.E-mail:jingfei0201@163.com 通讯作者: 中图分类号: S92 基金项目: 国家海洋局公益性行业科研专项（201505025）；海洋科学浙江省重中之重学科开放课题（20140104）；浙江海洋学院重大项目（X12D01）. Effect of enrichment of unicellular algae food on the nutritional quality of Acartia pacifica Author: Affiliation: 1. Marine Science College of Zhejiang Ocean University;National Engineering Research Center of Marine Facilities Aquaculture, Zhoushan 316022, China;2. Marine Fishery Institute of Zhejiang Province, Zhoushan 316000, China Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:采用生化手段对舟山附近海域中浮游桡足类夏季优势种-太平洋纺锤水蚤（Phaeodactylum tricornutum）对其营养价值的影响。结果表明，太平洋纺锤水蚤在投喂三角褐指藻和投喂小球藻后，其体内粗蛋白湿重含量分别为（6.51±0.46）%和（5.21±0.98）%，比对照组（2.44±0.63）%显著上升（<0.05），投喂小球藻后粗脂肪湿重含量（0.15±0.03）%显著下降（>0.05）。本研究检测出太平洋纺锤水蚤体内共含17种氨基酸，其中鱼类必需氨基酸（EAA）9种，非必需氨基酸（NEAA）8种，对照组与投喂两种饵料后太平洋纺锤水蚤中EAA含量均较高，干重含量为（47.56±0.04）%~（49.84±0.07）%；检测出太平洋纺锤水蚤共含21种脂肪酸，投喂三角褐指藻后太平洋纺锤水蚤的DHA和EPA干重含量之和最高（28.00%），其次为投喂小球藻（21.51%），均高于对照组（9.77%），而对照组干重（9.77%）也仍高于强化后轮虫DHA和EPA干重含量（0.8%）和强化后卤虫DHA和EPA干重含量（8.40%）。通过本实验发现，自然状态下的太平洋纺锤水蚤DHA和EPA含量较高，营养价值高，而投喂后三角褐指藻后太平洋纺锤水蚤营养价值明显增加，表明人工培养条件下太平洋纺锤水蚤具有作为水产经济动物活体开口饵料的潜在开发价值。 Abstract:is the summer dominant species of planktonic copepod in Zhoushan waters. We evaluated the effects of two kinds of unicellular algae food- -on the nutritional value of using biochemical methods. The aim of this paper was to provide theoretical information to evaluate the nutritional value and large-scale cultivation of . The results indicated that the crude protein content (wet weight) of Chlorella sp. (5.21±0.98)% was significantly higher than that of the control group (2.44±0.63)% (<0.05). The lower crude protein content of the control group may have been due to the poorer growth conditions, less food availability, and higher energy consumption under natural conditions. After feeding on , the crude fat content (0.25±0.03)% (wet weight) increased significantly ( sp. (0.15±0.03)%, most likely as the fatty acid content of sp.. The content of crude protein and crude fat in sp.; therefore, it was possible that consumed protein to supplement the energy required for growth due to the inadequate fat content in this food. The changes in content (wet weight) of total sugar and ash were not significant. Nine essential amino acids (EAA) and 8 non-essential amino acids (NEAA) of were detected in this study. The content (dry weight) of EAA in was (47.56±0.04)% to (49.84±0.07)%, EAA:NEAA was approximately 5:5, higher than that of , which may be beneficial for the growth of this fish. Twenty-one kinds of fatty acids in were determined. The content (dry weight) of DHA and EPA in the control group (9.77%) was lower than the group that fed on sp. (21.51%), but higher than the group that fed on (8.40%). Therefore, the proportion of DHA and EPA in , and could better meet the needs of juvenile fish growth. Overall, the results indicated that the nutritional value of was higher under artificial cultivation conditions and had potential value for the live food economy. 参考文献 相似文献 引证文献

Sample size optimization for cluster design of bottom trawl fish surveys in the Yellow River estuary

PDF HTML阅读 XML下载 导出引用 引用提醒 黄河口鱼类底拖网调查采样断面数的优化 DOI: 作者: 作者单位: 1. 中国海洋大学 水产学院, 山东 青岛 266003;2. 上海海洋大学 海洋科学学院, 上海 201306;3. 国家远洋渔业工程技术研究中心, 上海 201306;4. 青岛海洋科学与技术国家实验室, 海洋渔业科学与食物产出过程功能实验室, 山东 青岛 266000 作者简介: 王晶(1990-),女,博士研究生,主要从事渔业资源与生态学研究.E-mail:wangjing9_1@sina.cn 通讯作者: 中图分类号: S932 基金项目: 公益性行业（农业）科研专项经费项目（201303050）. Sample size optimization for cluster design of bottom trawl fish surveys in the Yellow River estuary Author: Affiliation: 1. College of Fisheries, Ocean University of China, Qingdao 266003, China;2. College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, China;3. National Engineering Research Center for Oceanic Fisheries, Shanghai 201306, China;4. Laboratory for Marine Fisheries Science and Food Production Processes;Qingdao National Laboratory for Marine Science and Technology, Qingdao 266000, China Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:优化调查采样设计方案，利用有限的调查成本获取准确可靠的渔业资源数据，对于开展独立于渔业的科学调查十分重要。根据2013年8、10月和2014年2、5月在黄河口及其邻近水域进行的渔业资源底拖网调查数据，选取短吻红舌鳎（）作为目标鱼种，以其平均个体体长、平均个体体重为调查采样优化目标，利用计算机模拟方法对黄河口水域的渔业资源底拖网调查生物学数据进行再抽样，以平均体长、平均体重估计值的相对估计误差（REE）、相对偏差（RB）和变异系数（CV）作为优化评价指标，对基于整群抽样方法的黄河口及邻近海域的调查采样断面数进行优化。结果表明，对于目标鱼种的平均体长、平均体重指标，模拟估计值的REE、RB和CV均随着断面数的减少不断增加，调查断面数少于3时，各指标的变化幅度较大。断面数由5减少至3，REE值平均增加2%，RB值平均增加0.13%，CV值平均增加1.95%，同时渔获量降低近40%。因此，断面数为3可视为黄河口及邻近海域可接受的最优调查断面数。 Abstract:Fishery-independent surveys are essential for collecting high-quality data to support the stock assessments and management of regular fisheries. In general, such programs are more costly and time-consuming than commercial fishery-dependent programs. Thus, considerable interest exists in using computer simulations to optimize methods for obtaining high-quality data with limited sampling effort. Currently, high intensity fishery-independent bottom trawl surveys may negatively affect and disturb fish populations and the ecosystem of fragile estuarine habitats. These areas support many important fishery species; however, they are also among the most extensively affected and threatened aquatic environments due to fishing pressure and environmental stressors such as coastal development. In this study, we developed computer simulations to evaluate and optimize sampling of mean body length and weight of target fish species in a cluster sampling survey. For use in simulations, bottom trawl surveys were conducted in the Yellow River estuary and its adjacent waters during 2013 (August, October) and 2014 (February, May) to collect abundance and biological-trait data on red tongue sole (). The relative estimation error (REE), relative bias (RB), and coefficient of variation (CV) were used to measure the performance (accuracy, precision, and efficiency) of sampling schemes. These indices increased for simulated data when the number of sampling sections decreased. In the current survey design, a reduction in sampling-section number from five to three would reduce sampling effort by 40%, while increasing REE by only~2% in about 40% of the catches. Thus, three sections are acceptable for surveys designed to obtain size-based indicators. This study also showed that sampling-effort optimization may vary between different survey objectives. Therefore, a post-survey analysis will improve fishery-independent survey designs based on specific survey goals, thereby yielding more effective survey data. 参考文献 相似文献 引证文献

Teaching reformation in biotechnological pharmaceutics based on "Excellent Engineer Education and Training Plan"

is an important course for pharmacy undergraduates, however there are many problems in current curriculum design and teaching methods. With the advantage of our platform National Engineering Research Center of Immunological Products, we tried to carry out the teaching reformation based on Excellent Engineer Education and Training Plan. We optimized the curriculum standards and teaching design, highlighted the combination of Biotechnological pharmaceutics and Engineering, strengthened the experiment teaching, tried the reformation of teaching method such as flipped classroom and PBL, strengthened the cultivation of innovative thinking and scientific research ability. Our teaching reformation is beneficial to cultivating the compound talents in the field of biotechnological pharmaceutics. Key words: Biotechnological pharmaceutics; Excellent Engineer Education and Training Plan; Research-based teaching; Compound talents

Comment on "Nanoparticle Enhanced Laser-Induced Breakdown Spectroscopy for Microdrop Analysis at subppm Level": Several Issues to Consider When Quantitatively Measuring Fluids Using Nanoparticle-Enhanced Laser-Induced Breakdown Spectroscopy.

ADVERTISEMENT RETURN TO ISSUEPREVCommentNEXTComment on “Nanoparticle Enhanced Laser-Induced Breakdown Spectroscopy for Microdrop Analysis at subppm Level”: Several Issues to Consider When Quantitatively Measuring Fluids Using Nanoparticle-Enhanced Laser-Induced Breakdown SpectroscopyChunjiang Zhao and Daming Dong*View Author Information National Engineering Research Center for Information Technology in Agriculture, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China*E-mail: [email protected]Cite this: Anal. Chem. 2016, 88, 19, 9869–9870Publication Date (Web):September 14, 2016Publication History Published online23 September 2016Published inissue 4 October 2016https://doi.org/10.1021/acs.analchem.6b02874Copyright © 2016 American Chemical SocietyRIGHTS & PERMISSIONSArticle Views821Altmetric-Citations10LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InReddit PDF (3 MB) Get e-AlertsSUBJECTS:Deposition,Elements,Gold,Liquids,Nanoparticles Get e-Alerts

Guest Editorial

Guest Editorial

Magnetic nanocomposites as MRI probes: Design and applications

Magnetic resonance imaging (MRI) probes are the important tools for discovering small pathological changes with functionality analysis. Probe structural design, functionality, multimodality, and applications will be covered in this talk. The focus of probe structural design is mainly aimed on how to improve the imaging sensitivity, including one important feature: the relaxivity of probes. Superparamagnetic nanoparticles are efficient proton enhancers. In our approach, magnetic nanoparticles are usually delivered by polymeric carriers with improved biocompatibility and sensitivity. Design of small moleucle paramagnetic probes and conjugation to polymeric carriers will also be discussed. Short BIOGRAPHY Hua Ai, PhD, Professor of Biomaterials, National Engineering Research Center for Biomaterials, Sichuan University. Dr. Ai is focusing on design and applications of nanobiomaterials for molecular imaging and drug delivery. He has developed ultrasensitive MRI probes based on self-assembly of amphiphilic polymers and magnetic nanocrystals. His work has been published on academic journals including Acc Chem Res, Adv Drug Deliv Rev, Adv Mater, Biomaterials, Nano Letters, Small, J Control Release, etc. Dr. Ai is in the editorial boards of Biomaterials, BioNanoScience, J Pharm Sci, and Pharmaceutical Nanotechnology. Dr. Ai is the current Secretary-General of Chinese Society for Biomaterials (www.csbm.org.cn).