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Comparative analysis of mitochondrial genome of a deepsea crab Chaceon granulates reveals positive selection and novel genetic features

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Journal of Oceanology and Limnology 2020年第2期38卷 427-437页

作者： ZHANG Bo WU Yingying WANG Xin JIANG Wei YIN Jianping lin qiang Key Laboratory of Tropical Marine Bio-Resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510275China Institution of South China Sea Ecology and Environmental Engineering Chinese Academy of SciencesGuangzhou 510275China University of Chinese Academy of Sciences Beijing 100049China Beijing Advanced Sciences and Innovation Center of Chinese Academy of Sciences Beijing 100049China Institute of Oceanology Chinese Academy of SciencesQingdao 266071China

Deep-sea organisms survive in an extremely harsh *** must be some genetic adaptation mechanisms for *** systematically characterized and compared the complete mitochondrial genome(mitogenome)of a deep-sea crab(Chaceon granulates)with those of shallow *** mitogenome of the crab was 16126 bp in length,and encoded 37 genes as most of a metazoan mitogenome,including 13 protein-coding genes(PCGs),22 transfer RNA(tRNA)genes,and 2 ribosomal RNA(rRNA)*** gene arrangement and orientation was conserved in the ***,a unique mitogenome element regulator,the origin of light-strand replication(O L),was firstly predicted in the present crab *** addition,further positive selection analysis showed that two residues(33 S in ND3 and 502 I in ND5)in *** mitogenome were positively selected,indicated the selective evolution of the deep-sea ***,the mitogenome of deep-sea *** showed a unique OL element and positive *** special features would influence the mitochondrial energy metabolism,and be involved in the adaptation of deepsea environment,such as oxygen deficits and low temperatures.

关键词： deep-sea organisms mitochondrial genome adaptation Chaceon granulates

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虚实结合的高分子化学实验课程教学改革探索

化工高等教育 2024年第4期41卷 142-149页

作者：张夏兰吕秋丰靳艳巧林起浪福州大学材料科学与工程学院福建福州350108

为培养适应社会发展需要的应用型创新人才,文章针对高分子化学实验课程传统教学存在的问题,提出了一种虚拟仿真实验教学与传统实验教学相结合的实验教学模式。该教学模式的实施,有助于弥补传统实验教学的不足,激发学生的学习兴趣,锻炼... 详细信息

为培养适应社会发展需要的应用型创新人才,文章针对高分子化学实验课程传统教学存在的问题,提出了一种虚拟仿真实验教学与传统实验教学相结合的实验教学模式。该教学模式的实施,有助于弥补传统实验教学的不足,激发学生的学习兴趣,锻炼学生的实践能力和创新思维,提高教学质量和效率,促进应用型创新人才的培养。

关键词：高分子化学实验虚拟仿真虚实结合实验教学

鱼类产卵行为与生态水文指标响应关系研究——以长江四大家鱼为例

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水生态学杂志 2024年第1期45卷 67-74页

作者：班学君樊博刘瀚俞立雄林俊强夏继红张迪中国水利水电科学研究院北京100038 河海大学农业与科学工程学院江苏南京211100 水利部科技推广中心北京100038 中国水产科学研究院长江水产研究所湖北武汉430223

四大家鱼作为我国重要淡水经济鱼类,近年来产卵规模大幅衰减,水文条件作为影响家鱼自然繁殖的重要因素,确定四大家鱼产卵行为与生态水文指标的关系对保护四大家鱼早期资源具有重要意义。以长江中游宜昌段为研究区域,采用ROC曲线、分类... 详细信息

四大家鱼作为我国重要淡水经济鱼类,近年来产卵规模大幅衰减,水文条件作为影响家鱼自然繁殖的重要因素,确定四大家鱼产卵行为与生态水文指标的关系对保护四大家鱼早期资源具有重要意义。以长江中游宜昌段为研究区域,采用ROC曲线、分类回归树、Logistic回归等方法将生态水文指标对家鱼产卵刺激划分为“无效、低效、高效”多分类问题,分析家鱼产卵行为与生态水文指标间的响应关系,并对比研究不同方法间的性能与优缺点。结果显示,ROC曲线判别准确率、预测准确率、模型鲁棒性均最优,是判定生态水文指标对四大家鱼产卵规模影响的最优方法;当流量日增量大于1370 m^(3)/s且两次洪峰间隔时间大于7.5 d时可以引起四大家鱼高效产卵响应。辨识出高效刺激家鱼产卵的生态水文指标及其阈值,对生态调度的优化改进具有重要的现实意义。

关键词：四大家鱼生态水文指标 ROC曲线生态调度

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矿山生态修复工程及技术措施分析

世界有色金属 2024年第14期 214-216页

作者：王雯韩淑敏聂林强王英山东省煤田地质局第三勘探队山东泰安271000 山东省自然资源资料档案馆山东济南250000

随着矿产资源的开采和利用,矿山生态环境问题日益突出,严重制约了矿山的可持续发展。矿山生态修复工程作为改善矿山生态环境、保护生态平衡的重要举措,具有重要的现实意义和长远价值。基于此,本文对矿山生态修复工程及其技术措施进行深... 详细信息

随着矿产资源的开采和利用,矿山生态环境问题日益突出,严重制约了矿山的可持续发展。矿山生态修复工程作为改善矿山生态环境、保护生态平衡的重要举措,具有重要的现实意义和长远价值。基于此,本文对矿山生态修复工程及其技术措施进行深入分析,以期为矿山生态修复提供理论支持和实践指导。

关键词：矿山生态修复环境污染水土流失地貌破坏技术措施

基于TOPSIS的防空预警装备体系作战效能评估方法

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舰船电子对抗 2024年第2期47卷 28-35,41页

作者：严新宇林强胡冰喻勇施端阳空军预警学院湖北武汉430019 解放军95174部队湖北武汉430040

为了检验预警装备体系在特定条件下完成作战任务的效果和优选作战方案,对防空预警装备体系作战效能评估方法进行了研究。通过分析区域防空预警作战流程,构建了基于侦察预警能力、战场生存能力、指挥控制能力和综合保障能力的作战效能评... 详细信息

为了检验预警装备体系在特定条件下完成作战任务的效果和优选作战方案,对防空预警装备体系作战效能评估方法进行了研究。通过分析区域防空预警作战流程,构建了基于侦察预警能力、战场生存能力、指挥控制能力和综合保障能力的作战效能评估指标体系。针对单一赋权方法权值偏颇的不足,运用序关系分析法(G1法)和改进的标准间冲突性相关性(CRITIC)法确定指标综合权重,利用改进的逼近理想解排方法(TOPSIS)对防空预警装备体系作战效能进行定量评估。通过装备部署方案仿真试验,验证了该方法的可行性和科学性,对防空预警装备体系作战方案的设计和优化具有指导意义。

关键词：防空预警装备体系作战效能指标体系

A Computational Study of Radio Frequency Atmospheric Pressure Discharge in Nitrogen and Oxygen Mixture Gases

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Chinese Physics Letters 2013年第3期30卷 100-103页

作者： WANG Yi-Nan LIU Yue lin Guo-qiang Key Laboratory of Materials Modification by Laser Electronand Ion Beams(Ministry of Education)School of Physics and Optoelectronic TechnologyDalian University of TechnologyDalian 116024

The characteristics of radio frequency atmospheric pressure discharge in nitrogen and oxygen mixture gases are investigated by using a one-dimensional fluid *** model consists of equations of particle continuity,Poisson's equation,and the electron energy *** effect of the concentrations of O_(2) in N_(2) on the discharge characteristics is *** results show that when the concentration of O_(2) in N_(2) is less than 12%,as the amount of O_(2) grows,the electron density and the N4+ion density decrease;the main negative particles are *** the concentration of O_(2) in N_(2) is greater than 12%,the electron density and the N_(4)^(+) ion density increase with the increasing admixture of oxygen;the main negative particle is the O^(-) ***,the O^(-) ion density,the O_(2)^(+) ion density,the electron temperature and the mixture gases electronegativity increase with growth of O_(2) in the range from 4%to 20%and with density of O_(2) in N_(2).

关键词： equation. gases Oxygen

Characterisation and separation of infectious bursal disease virus-like particles using aqueous two-phase systems

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Chinese Journal of Chemical Engineering 2023年第5期57卷 72-78页

作者： Hui Yi Leong Xiao-Qian Fu Xiang-Yu Liu Shan-Jing Yao Dong-qiang lin Zhejiang Key Laboratory of Smart Biomaterials Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China Sinopharm Animal Health Corporation Ltd. Wuhan 430075China

Infectious bursal disease(IBD)causes considerable economic losses in the commercial poultry industry *** principal way to control IBD virus(IBDV),the causative agent of IBD,is still through vaccination ***-like particles(VLPs)are recognised as a safe and potent recombinant vaccine *** research work explores the characterisation and separation of infectious bursal disease virus-like particles(IBD-VLPs)from crude *** characteristics were studied with highperformance size-exclusion chromatography(HP-SEC),sodium dodecyl sulphate–polyacrylamide gel electrophoresis(SDS-PAGE)and transmission electron microscopy(TEM)***,the separation of IBD-VLPs using polyethylene glycol(PEG)/sodium citrate-based aqueous two-phase systems(ATPSs)was conducted and ***,a scale-up study of the best ATPS constituted of 15%PEG 6000,11%sodium citrate and 10%crude feedstock was performed to compare the separation performance of IBD-VLPs with and without *** results indicated that the optimised ATPS with centrifugation-assisted for both 5 g and 50 g systems showed good recovery of IBDVLPs of>97%in the interphase between the PEG-rich top and salt-rich bottom *** optimised systems also showed high removal efficiencies of impurities of>95%.The results demonstrated that aqueous two-phase extraction could be a promising technology for efficient VLPs separation.

关键词： Aqueous two-phase extraction Infectious bursal disease virus Polymers Salt Separation Virus-like particle

Enhanced photocatalytic activity of Gd3+ doped TiO2 and Gd2O3 modified TiO2 prepared via ball milling method

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Journal of Rare Earths 2019年第8期37卷 845-852,I0002页

作者： Di Wu Chen Li Dashuai Zhang Lili Wang Xiaopeng Zhang Zaifeng Shi qiang lin Key Laboratory of Water Pollution Treatment&Resource Reuse Hainan Normal UniversityHaikou 571158China College of Chemistry and Chemical Engineering Hainan Normal UniversityHaikou 571158China State Key Laboratory of Pollution Control and Resource Reuse Nanjing UniversityNanjing 210043China

Gd^3+/TiO2 and Gd2O3/TiO2 nanoparticles were prepared by ball milling *** effects of Gd^3+ion and Gd2O3 on the structure and optical property of TiO2 were studied by XRD and UV-vis *** surface area was determined by Brunauer-Emmett-Teller(BET)*** morphology and elemental composition were characterized by *** was used to determine the surface compositions and chemical character of *** sample sizes and microstructures were observed by *** photocatalytic activities of TiO2 nanoparticles modified with rare earth metal gadolinium(Gd^3+ion or Gd2O3)were evaluated by degradation of methylene blue(MB)under UV *** results indicate that 2,5 mol%Gd^3+/TiO2 shows the best photocatalytic activity compared with Gd2O3/TiO2 and pure *** existence of gadolinium can exhibit the aggregation and induce lattice distortion of TiO2 obtained from XRD,SEM and TEM *** band gap energy of 2.5 mol%Gd^3+/TiO2 decreases to3.07 eV and it leads to visible light absorption response which can be seen from UV-vis absorption *** surface area of 2.5 mol%Gd^3+/TiO2 equals to 85.8 m^2/g and average crystal size is 21.1 *** and XPS analyses reveal that gadolinium can be introduced either into TiO2 lattice or adsorbed on the surface of *** content of surface OH groups in 2.5 mol%Gd^3+/TiO2 is 50,88%(1.55 times higher than that of pure TiO2)and the content of lattice oxygen decreases to 11.26%.The MB(25 mg/L)degradation reaction rate constants of 2,5 mol%Gd^3+/TiO2,0.5 mol%Gd2O3/TiO2 and pure TiO2 were0.0713,0.0588 and 0.0263 min^-1,*** degradation rates of rhodamine B(30 mg/L)in 60 min are 97,9%,90.1%and 84.6%for 2,5 mol%Gd^3+/TiO2,0.5 mol%Gd2O3/TiO2 and pure TiO2,respectively.

关键词： Ball milling method Rare earth Gadolinium TiO2 Methylene blue

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基于自注意力和GRU的锂电池健康状态估计

计算机技术与发展 2024年第5期34卷 213-220页

作者：雷孟飞梁泉孙世豪林勇强福建理工大学计算机科学与数学学院福建福州350118

为了解决锂离子电池使用中特征提取数据不足和模型需要大量历史数据的问题,通过分析锂离子电池使用中的数据,提出了放电过程中基于Self-Attention-GRU的锂离子电池健康状态估计方法。在没有历史数据的锂电池上使用相同型号锂电池历史数... 详细信息

为了解决锂离子电池使用中特征提取数据不足和模型需要大量历史数据的问题,通过分析锂离子电池使用中的数据,提出了放电过程中基于Self-Attention-GRU的锂离子电池健康状态估计方法。在没有历史数据的锂电池上使用相同型号锂电池历史数据训练的模型估计电池健康状态;拥有一定量老化数据后,使用锂电池自身的老化数据训练模型估计电池健康状态。提取放电过程的等压降放电时间、电压均方根和放电功率作为健康因子,利用融合自注意力机制的门控循环单元建立健康因子和健康状态(SOH)之间的映射关系。使用4组CALCE电池老化数据进行实验验证。模型在20%老化数据作为训练集时MAE和RMSE分别达到1.03%和1.25%;在30%,40%老化数据和相同型号电池全部老化数据作为训练集时模型的MAE和RMSE都小于等于1%。说明该方法在估计锂离子电池健康状态估计方面具有较高的精确性和可靠性。

关键词：健康状态自注意力机制门控循环单元(GRU) 锂离子电池健康因子