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金虎杂交斑三倍体、二倍体生长、发育比较及形态性状差异分析

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海洋与湖沼 2024年第5期55卷 1302-1311页

作者：邓远苏金枝李振通黎琳琳邱弈树丁小雨段鹏飞王心怡王林娜刘阳马文辉赵侠李胜忠田永胜海水养殖生物育种与可持续产出全国重点实验室中国水产科学研究院黄海水产研究所山东青岛266071 新疆农业大学生命科学学院新疆乌鲁木齐830052 中国水产科学研究院海南创新研究院海南三亚572000 莱州明波水产有限公司山东莱州261400

为了解金虎杂交斑三倍体的生长与形态特征,利用金虎杂交斑三倍体(JH-3N)和二倍体群体(JH-2N),通过对比养殖试验分析了两种不同倍性杂交石斑鱼的生长性能,同时采用多元统计分析方法对JH-3N、JH-2N及母本棕点石斑鱼(EF)和父本蓝身大斑石斑... 详细信息

为了解金虎杂交斑三倍体的生长与形态特征,利用金虎杂交斑三倍体(JH-3N)和二倍体群体(JH-2N),通过对比养殖试验分析了两种不同倍性杂交石斑鱼的生长性能,同时采用多元统计分析方法对JH-3N、JH-2N及母本棕点石斑鱼(EF)和父本蓝身大斑石斑鱼(ET)的形态特征进行统计分析。结果显示,经90 d对比养殖后,JH-3N的终末体质量较JH-2N提高9.59%。性腺组织学观察表明,JH-3N卵巢与同期JH-2N相比发育明显滞后。经卡方检验显示,JH-3N与JH-2N、父本和母本的7个可数性状都没有显著性差异。单因素方差分析显示,4个石斑鱼群体除M_(14)(臀鳍前端基部至尾鳍长)外,其他18个比例性状差异显著(P<0.05)。聚类分析显示,JH-3N为单独一支,与其他3个群体分离。主成分分析共得到累计贡献率达63.273%的3个主成分,差异主要体现在鱼体的背腹轴方向。判别分析显示,4个石斑鱼群体的判别准确率达100%,综合判别率为100%。研究结果表明,JH-3N具有生长速度更快、性腺发育滞后的优良性状,表型性状与JH-2N相比具有显著性差异,具备在生产上推广应用的前景,研究结果为金虎杂交斑倍性育种及种群鉴定提供了丰富的生物学基础数据。

关键词：金虎杂交斑三倍体生长速度形态特征多元统计

金虎杂交斑三倍体血细胞特征及染色体核型分析

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海洋与湖沼 2024年第2期55卷 509-516页

作者：邓远李振通苏金枝黎琳琳邱弈树丁小雨段鹏飞王心怡王林娜刘阳马文辉赵侠李胜忠田永胜新疆农业大学生命科学学院新疆乌鲁木齐830052 农业农村部海洋渔业可持续发展重点实验室、中国水产科学研究院黄海水产研究所山东青岛266071 中国水产科学研究院海南创新研究院海南三亚572000 莱州明波水产有限公司山东莱州261400

为了解三倍体金虎杂交斑(棕点石斑鱼Epinephelus fuscoguttatus♀×蓝身大斑石斑鱼***♂)的细胞遗传特性。以静水压休克诱导的三倍体金虎杂交斑为研究对象,通过细胞Dna含量测定鉴定出三倍体金虎杂交斑、对三倍体金虎杂交斑进行红细胞大... 详细信息

为了解三倍体金虎杂交斑(棕点石斑鱼Epinephelus fuscoguttatus♀×蓝身大斑石斑鱼***♂)的细胞遗传特性。以静水压休克诱导的三倍体金虎杂交斑为研究对象,通过细胞Dna含量测定鉴定出三倍体金虎杂交斑、对三倍体金虎杂交斑进行红细胞大小、形态的比较及染色体核型分析。结果显示,三倍体金虎杂交斑的Dna含量与二倍体金虎杂交斑的Dna含量的比值为1.45︰1。三倍体金虎杂交斑血细胞长轴、短轴分别为二倍体的1.34、1.14倍(P<0.01)。三倍体金虎杂交斑血细胞体积、表面积分别为二倍体的2.07和1.54倍(P<0.01),三倍体金虎杂交斑血细胞核长轴、短轴、核表面积、核体积分别为二倍体的1.22、1.05、1.29、1.57倍(P<0.01)。通过头肾-秋水仙素注射法进行染色体核型分析结果显示,二倍体金虎杂交斑的染色体数目为48,核型为2n=48=2sm+46t,NF=50,三倍体金虎杂交斑的染色体数目为72,核型为3n=72=1m+2sm+69t,NF=75,未发现有性染色体。实验结果为石斑鱼杂交种多倍体育种提供了丰富生物学基础数据。

关键词：金虎杂交斑红细胞形态流式细胞术三倍体二倍体染色体核型

Microstructure and room temperature fracture toughness of Nb-Si-based alloys with Sr addition

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Rare Metals 2024年第8期43卷 3904-3912页

作者： Yong-lin Huang Li-na Jia Bin Kong Yue-ling Guo na wang School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Nb-Si-based alloys show great potential to surpass the widely used Ni-based *** element Sr is widely applied in aluminum and magnesium alloys,but reports about the effects of Sr on Nb-Si-based alloys are quite ***,Nb-Si-based alloys with nominal compositions of Nb-15Si-24Ti-4Cr-2Al-2Hf-0/0.05/0.15Sr(at%)were prepared by directional solidification and heat *** microstructural characterization and room temperature fracture toughness of Nb-Si-based alloy were systematically *** show that all these alloys consist of Nb_5Si_3 phase embedded within Nb solid solution(Nb_(ss)) *** Nb_(5)Si_(3) phase becomes refined and more discontinuous after adding minor *** for the fracture toughness,0.05 at% and 0.15 at% Sr additions do not cause significant *** discontinuous and refining mechanism of Sr element was studied,and the analysis of toughness decreasing with Sr addition reveals that the size of Nb_(ss) phase plays a crucial role in determining the fracture toughness.

关键词： Nb-Si alloy Refinement Discontinuous Fracture toughness Nb_(ss)

Insights into sensitizing and eliciting capacity of gastric and gastrointestinal digestion products of shrimp(Penaeus vannamei)proteins in BALB/c mice

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Food Science and Human Wellness 2024年第1期13卷 339-348页

作者： Yao Liu Songyi lin Kexin Liu Shan wang wang Li na Sun national Engineering Research Center of Seafood School of Food Science and TechnologyDalian Polytechnic UniversityDalian 116034China Collaborative Innovation Center of Seafood Deep Processing Dalian Polytechnic UniversityDalian 116034China

Shrimp(Penaeus vannamei)proteins have been shown an allergenic potential;however,little information is available on the sensitizing and eliciting capacity of shrimp protein digestion *** this study,a BALB/c mice model was used to explore the allergenicity of shrimp protein sample(SPS)and their gastric and gastrointestinal digestion products(GDS/GIDS).As compared with the SPS groups,the GDS/GIDS groups caused lower specific immunoglobulins(Ig E/Ig G1)levels(Pnated and still cause systemic allergic reactions in *** study showed that the digestion products of shrimp still had high sensitizing and eliciting capacity.

关键词： Penaeus vannamei Allergenicity Digestion BALB/c mice model

Transverse mode-coupling instability with longitudinal impedance

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Nuclear Science and Techniques 2024年第6期35卷 40-53页

作者： Hai-Sheng Xu Chun-Tao lin na wang Jing-Ye Xu Yuan Zhang Key Laboratory of Particle Acceleration Physics and Technology Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Institute of Advanced Science Facilities Shenzhen 518107GuangdongChina

Transverse mode-coupling instability(TMCI)is a dangerous transverse single-bunch instability that can lead to severe par-ticle *** mechanism of TMCI can be explained by the coupling of transverse coherent oscillation modes owing to the transverse short-range wakefield(i.e.,the transverse broadband impedance).Recent studies on future circular colliders,e.g.,FCC-ee,showed that the threshold of TMCI decreased significantly when both longitudinal and transverse impedances were *** performed computations for the circular electron-positron collider(CEPC)and observed a similar *** studies on the influence of longitudinal impedance on the TMCI threshold were *** concluded that the imaginary part of the longitudinal impedance,which caused a reduction in the incoherent synchrotron tune,was the primary reason for the reduction in the TMCI ***,the real part of the longitudinal impedance assists in increasing the TMCI threshold.

关键词： Transverse mode-coupling instability Longitudinal impedance

Real-Time Co-optimization of Gear Shifting and Engine Torque for Predictive Cruise Control of Heavy-Duty Trucks

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Chinese Journal of Mechanical Engineering 2024年第2期37卷 294-317页

作者： Hongqing Chu Xiaoxiang na Huan Liu Yuhai wang Zhuo Yang lin Zhang Hong Chen School of Automotive Studies Tongji UniversityShanghaiChina Department of Engineering University of CambridgeCambridgeUK State Key Laboratory of Automotive Simulation and Control Jilin UniversityChangchunChina Qingdao Automotive Research Institute Jilin UniversityQingdaoChina Dongfeng Commercial Vehicle Technology Center Dongfeng Motor CorporationWuhanChina

Fuel consumption is one of the main concerns for heavy-duty *** cruise control(PCC)provides an intriguing opportunity to reduce fuel consumption by using the upcoming road *** this study,a real-time implementable PCC,which simultaneously optimizes engine torque and gear shifting,is proposed for heavy-duty *** minimize fuel consumption,the problem of the PCC is formulated as a nonlinear model predictive control(MPC),in which the upcoming road elevation information is *** the solution of the nonlinear MPC is time consuming;thus,a real-time implementable solver is developed based on Pontryagin’s maximum principle and indirect shooting *** programming(DP)algorithm,as a global optimization algorithm,is used as a performance benchmark for the proposed ***,hardware-in-the-loop and real-truck experiments are conducted to verify the performance of the proposed *** results demonstrate that the MPC-based solution performs nearly as well as the DP-based solution,with less than 1%deviation for testing ***,the proposed co-optimization controller is implementable in a real-truck,and the proposed MPC-based PCC algorithm achieves a fuel-saving rate of 7.9%without compromising the truck’s travel time.

关键词： Heavy-duty truck Predictive cruise control Model predictive control Pontryagin’s maximum principle Real-truck implementation

Highly selective photocatalytic reduction of CO_(2) to CH_(4) on electron-rich Fe species cocatalyst under visible light irradiation

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Carbon Energy 2024年第1期6卷 255-266页

作者： Qianying lin Jiwu Zhao Pu Zhang Shuo wang Ying wang Zizhong Zhang na Wen Zhengxin Ding Rusheng Yuan Xuxu wang Jinlin Long State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhouChina

Efficient photocatalytic reduction of CO_(2) to high-calorific-value CH4,an ideal target product,is a blueprint for C_(1)industry relevance and carbon neutrality,but it also faces great ***,we demonstrate unprecedented hybrid SiC photocatalysts modified by Fe-based cocatalyst,which are prepared via a facile impregnation-reduction method,featuring an optimized local electronic *** exhibits a superior photocatalytic carbon-based products yield of 30.0μmol g^(−1) h^(−1) and achieves a record CH_(4) selectivity of up to 94.3%,which highlights the effectiveness of electron-rich Fe cocatalyst for boosting photocatalytic performance and ***,the synergistic effects of directional migration of photogenerated electrons and strongπ-back bonding on low-valence Fe effectively strengthen the adsorption and activation of reactants and intermediates in the CO_(2)→CH_(4) *** study inspires an effective strategy for enhancing the multielectron reduction capacity of semiconductor photocatalysts with low-cost Fe instead of noble metals as cocatalysts.

关键词： artificial synthesis of CH_(4) electronic structure optimization Fe species cocatalyst photocatalytic CO_(2) reduction SiC

Effect of microalloying on wettability and interface characteristics of Zr-based bulk metallic glasses with W substrate

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China Foundry 2024年第4期21卷 352-359页

作者： Zhen Zhang lin-na Feng Jin-he wang Zheng-kun Li Hua-meng Fu Hong Li Zheng-wang Zhu Hai-feng Zhang School of Materials Science and Engineering Shenyang University of TechnologyShenyang 110870China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China School of Metallurgy Northeastern UniversityShenyang 110004China

The infiltration casting method is widely employed for the preparation of ex-situ composite ***,the production of composite materials using this method must necessitates a comprehensive understanding of the wettability and interface characteristics between the reinforcing phase and the bulk metallic glasses(BMGs).This work optimized the composition of Zr-based BMGs through microalloying methods,resulting in a new set of Zr-based BMGs with excellent glass-forming *** experiments between the Zr-based BMGs melts and W substrates were conducted using the traditional sessile drop method,and the interfaces were characterized utilizing a scanning electron microscope(SEM)equipped with energy dispersive X-ray spectroscopy(EDS).The work demonstrates that the microalloying method substantially enhances the wettability of the Zr-based BMGs ***,the incorporation of Nb element impedes the formation of W-Zr phases,but the introduction of Nb element does not alter the extent of interdiffusion between the constituent elements of the amorphous matrix and W element,indicating that the influence of Nb element on the diffusion of individual elements is minute.

关键词： Zr-based BMGs infiltration casting method wettability interface characteristics W-Zr phases

Diphylleia Grayi-Inspired Intelligent Temperature-Responsive Transparent nanofiber Membranes

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nano-Micro Letters 2024年第4期16卷 67-78页

作者： Cengceng Zhao Gaohui Liu Yanyan lin Xueqin Li na Meng Xianfeng wang Shaoju Fu Jianyong Yu Bin Ding Shanghai Frontier Science Research Center of Advanced Textiles College of TextilesDonghua UniversityShanghai 201620People’s Republic of China

nanofiber membranes(NFMs) have become attractive candidates for next-generation flexible transparent materials due to their exceptional flexibility and breathability. However, improving the transmittance of NFMs is a great challenge due to the enormous reflection and incredibly poor transmission generated by the nanofiber-air interface. In this research, we report a general strategy for the preparation of flexible temperature-responsive transparent(TRT) membranes,which achieves a rapid transformation of NFMs from opaque to highly transparent under a narrow temperature window. In this process, the phase change material eicosane is coated on the surface of the polyurethane nanofibers by electrospray technology. When the temperature rises to 37 ℃, eicosane rapidly completes the phase transition and establishes the light transmission path between the nanofibers, preventing light loss from reflection at the nanofiber-air interface. The resulting TRT membrane exhibits high transmittance(> 90%), and fast response(5 s). This study achieves the first TRT transition of NFMs, offering a general strategy for building highly transparent nanofiber materials, shaping the future of next-generation intelligent temperature monitoring, anti-counterfeiting measures, and other high-performance devices.

关键词： Biomimetic Transparent nanofibrous membrane Temperature response Phase change materials