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Rumen-protected lysine supplementation improved amino acid balance,nitrogen utilization and altered hindgut microbiota of dairy cows

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Animal Nutrition 2023年第4期15卷 320-331页

作者： Xiaoshi Wei Hao Wu zixiang wang Jinpeng Zhu Weijie wang Junhong wang Yanming wang Chong wang College of Animal Science and Technology&College of Veterinary Medicine Zhejiang A&F UniversityHangzhouZhejiang 311300China College of Animal Science Zhejiang UniversityHangzhou 310058China Kemin(China)Technologies Co.Ltd. Zhuhai 519040China

This study was conducted to evaluate the effects of dietary crude protein(CP)and rumen-protected lysine(RPL)supplementation on lactation performance,amino acid(AA)balance,nitrogen(N)utilization and hindgut microbiota in dairy *** were in a 2×2 factorial arrangement,and the main effects were CP concentration(16%vs.18%)and RPL supplementation(with or without RPL at40 g/cow per day).Forty cows were randomly allocated to 4 groups:low-CP diet(LP),low-CP diet plus RPL(LPL),high-CP diet(HP),high-CP diet plus RPL(HPL).The experiment was conducted for 8 *** showed that RPL increased the dry matter intake(P<0.01),milk protein yield(P=0.04)and energy corrected milk(P=0.04),and tended to increase milk fat yield(P=0.06)and fat corrected milk(P=0.05).Cows in the HP group tended to have higher milk urea N(P=0.07).Plasma concentrations of Arg,Ile,Lys,Met,Pro,total essential AA and total nonessential AA were increased by RPL(P<0.05).The total essential AA,total nonessential AA and most AA(except Ile,Phe,Gly and Pro)were increased in the HP group(P<0.05).N excretion was increased in the HP group through an increase in urea N excretion(P<0.01)and an upward trend in plasma urea N(P=0.07).In addition,RPL tended to increase milk protein N secretion(P=0.08),milk N(P=0.07)and microbial protein synthesis(P=0.06),and decreased plasma urea N(P<0.001).In the hindgut,the bacterial community were different between the LP and LPL groups(P<0.01).The probiotic abundances of Christensenellaceae_R-7_group and Acinetobacter were increased by RPL(P=0.03 and 0.03,respectively).The pathogenic abundances of Clostridium_sensu_stricto_1(P<0.001)and Turicibacter(P<0.01)were decreased by *** conclusion,supplementing RPL with low dietary CP could balance AA supply and increase milk protein yield,resulting in an improvement in N utilization efficiency,and altered the composition of the hindgut microbiota to favor the lactation performance of dairy cows.

关键词： Rumen-protected lysine Milk protein N utilization Hindgut microbiota Dairy cow

Campus Intelligence Mental Health Searching System Based on Face Recognition Technology

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Journal of Electronic Research and Application 2020年第4期4卷 4-9页

作者： zixiang wang Dujiangyan Bayi Juyuan senior high school DujiangyanChengduSichuan ProvinceChina

The phenomenon of teenage campus suicide has become the focus of attention of parents,schools and the *** causes behind it are extremely complicated,and the root cause is psychological and spiritual ***,one’s negative psychology is often hidden,and it is difficult to detect and effectively intervene before the *** to effectively identify students with suicidal tendencies in order to prevent tragedies has aroused extensive research and discussion among the government,academia and the *** investigation and research,it is found that the current popular computer cutting-edge technologies such as artificial intelligence and computer vision can be well used for human emotion recognition and behavior prediction,and put into use in schools as a mental health auxiliary diagnosis and treatment system,thus effectively reducing the suicide rate on *** scenario assumes that machine learning can be used to deduce the risk of psychological problems in human samples by analyzing the frequency of negative emotions in facial *** on this,this paper proposes an effective solution for campus suicide prediction,and designs a set of auxiliary diagnosis and treatment system based on campus monitoring network system for suicide behavior prediction and student mental health *** preliminary experimental analysis and verification,the suicide psychological auxiliary diagnosis and treatment system has achieved good results in face recognition success rate,emotion recognition success rate and behavior prediction success *** the input of more experimental data and the increase of self-training time,the prediction system will perform better.

关键词： Suicide prevention Machine learning Face recognition Human emotion recognition

掺杂不同粒度添加剂的Ag-SnO_2 触头材料的物理性能和电接触特性（英文）

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稀有金属材料与工程 2019年第2期48卷 458-462页

作者：王海涛王连峥王子相河北工业大学省部共建电工装备可靠性与智能化国家重点实验室河北省电磁场与电器可靠性重点实验室天津300130

通过粉末冶金法制备了Ag-SnO_2 触头材料。选择Bi_2O_3、TiO 2和CeO 2为添加剂,每种添加剂选取4种粒度,添加剂的比例通过润湿性试验获得。对掺杂不同种类不同粒度的Ag-SnO_2 触头材料的物理和电接触性能进行了研究。结果表明,3种添加剂(... 详细信息

通过粉末冶金法制备了Ag-SnO_2 触头材料。选择Bi_2O_3、TiO 2和CeO 2为添加剂,每种添加剂选取4种粒度,添加剂的比例通过润湿性试验获得。对掺杂不同种类不同粒度的Ag-SnO_2 触头材料的物理和电接触性能进行了研究。结果表明,3种添加剂(Bi_2O_3、TiO 2和CeO_2 )的粒度对触头材料性能的影响趋势是一致的,随着添加剂粒度的减小,Ag-SnO_2 触头材料的物理和电接触性能都得到了提高,并且添加剂的最佳粒径为200 nm。

关键词： Ag-SnO2触头材料润湿性添加剂粒度物理特性接触电阻

Paleovegetation inferred from the carbon isotope composition of long-chain nalkanes in lacustrine sediments from the Song-nen Plain,northeast China

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Paleovegetation inferred from the carbon isotope composition...

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Zhifu Wei Yongli wang Baoxiang Wu zixiang wang Gen wang Key Laboratory of Petroleum Resources Gansu Province/Key Laboratory of Petroleum Resources ResearchInstitute of Geology and GeophysicsChinese Academy of Sciences University of Chinese Academy of Sciences

Abundant n-alkanes were identified by GC/MS analysis in core sediments from Xianghai Lake and the Huola Basin,on the Song-nen Plain,northeast *** n-alkanes extracted from Xianghai Lake samples showed unimodal and bimodal *** main peaks of unimodal distribution were at n-C or n-C,and the mid-and long-chain nalkanes had odd-carbon-number predominance,suggesting they were derived mainly from terrestrial higher *** distributions of n-alkanes had maximum values centered at n-C and n-C in all *** short-chain n-alkanes with a maximum at n-C showed no odd–even predominance,however there was a strong odd-carbon-number predominance of long-chain n-alkanes,with a maximum at *** results suggest that organic matter in Xianghai Lake was derived from mixed sources,including bacteria,algae and terrestrial *** n-alkanesextracted from Huola Basin sediments were characterized by a unimodal distribution,with the maximum value at n-C,and the long-chain n-alkanes had an odd-carbon-number predominance,indicating that they were derived mainly from terrestrial higher *** addition,the compound-specific carbon isotope composition was determined for C27,C and Cn-alkanes in the core sediments,and the relative contributions of C and Cplants were estimated using a binary *** indicated that C plants were the dominant input during the late glacial and *** relative abundance of C and Cplants changed significantly through time,likely determined by cool versus warm climate conditions.

关键词： n-Alkanes d13C of long-chain nalkanes Paleovegetation C3 and C4 plants Northeast China

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计及稳定裕度约束的最优协调电压控制

电网技术 2013年第11期37卷 3159-3165页

作者：张岩王子翔张文电网智能化调度与控制教育部重点实验室(山东大学) 山东省济南市250061 山东建筑大学山东省济南市250011

为防止故障后系统电压崩溃并维持一定的稳定裕度,提出一种计及稳定裕度约束的协调电压控制策略。该策略基于模型预测控制和轨迹灵敏度方法建立电压协调控制模型。在每个控制周期初始时刻识别系统分岔方式,通过计算相应分岔方式下电压稳... 详细信息

为防止故障后系统电压崩溃并维持一定的稳定裕度,提出一种计及稳定裕度约束的协调电压控制策略。该策略基于模型预测控制和轨迹灵敏度方法建立电压协调控制模型。在每个控制周期初始时刻识别系统分岔方式,通过计算相应分岔方式下电压稳定裕度的灵敏度构建稳定裕度约束。若控制周期初始时刻存在稳定平衡点,则将稳定裕度约束加入优化模型,求解最优控制序列。新英格兰39节点系统和Nordic32 52节点系统的仿真结果表明,该方法在协调优化电压幅值的同时确保了系统的稳定裕度。

关键词：电压稳定裕度鞍结点分岔极限诱导分岔轨迹灵敏度模型预测控制

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面向时变回诊患者需求的急诊周排班研究

上海交通大学学报 2022年第2期56卷 242-252页

作者：王子翔吴泽锐刘冉上海交通大学工业工程与管理系上海200240

针对急诊科医生的柔性排班问题,基于排队论和流平衡模型,提出一种已知医生排班情况下估计时变、带回流客流系统中患者等待队长的方法;考虑医生排班的实际约束,建立一个混合整数规划模型,并设计禁忌搜索算法求解该问题.数值实验显示,所... 详细信息

针对急诊科医生的柔性排班问题,基于排队论和流平衡模型,提出一种已知医生排班情况下估计时变、带回流客流系统中患者等待队长的方法;考虑医生排班的实际约束,建立一个混合整数规划模型,并设计禁忌搜索算法求解该问题.数值实验显示,所提评估方法能够有效近似患者队长,且所提算法求解得到的排班能够有效减少患者的总等待队长.

关键词：急诊科时变回诊患者需求柔性排班医生周排班问题排队论

汽车继电器用AgMeO触点材料不同配对方式时的性能

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材料科学与工艺 2019年第4期27卷 17-23页

作者：王海涛王连峥王子相省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学) 天津300130 河北省电磁场与电器可靠性重点实验室(河北工业大学) 天津330130

为了探究触点配对方式对汽车继电器电接触性能的影响,选取AgMeO型触头材料进行实验,采用粉末冶金法制备AgSnO2,AgCuO和AgZnO3种触头材料,并测量其物理性能,采用JF04C电接触触点材料测试系统,按5种不同触点配对方式进行电接触实验,并对... 详细信息

为了探究触点配对方式对汽车继电器电接触性能的影响,选取AgMeO型触头材料进行实验,采用粉末冶金法制备AgSnO2,AgCuO和AgZnO3种触头材料,并测量其物理性能,采用JF04C电接触触点材料测试系统,按5种不同触点配对方式进行电接触实验,并对实验前后的阴阳极触点进行称量,实验结果表明:触点配对方式对接触电阻,材料转移和损耗影响较大,对燃弧能量的影响较小,通过对触点进行不对称配对可以明显降低接触电阻和材料转移和损耗,明显改善汽车继电器的接触性能.

关键词： AgMeO触点材料配对方式粉末冶金法接触电阻燃弧能量材料转移及损耗

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用于成对PPI网络比对的分治与整合算法

智能系统学报 2022年第5期17卷 960-968页

作者：刘晓陈璟王子祥江南大学人工智能与计算机学院江苏无锡214122 江南大学江苏省模式识别与计算智能工程实验室江苏无锡214122

生物网络比对是分析不同生物间进化关系的重要手段,它可以揭示不同物种间的保守功能并为物种间的注释转移提供重要信息。网络比对与子图同构类似,是一个NP-hard问题。本文提出了一种新的分治与整合策略的生物网络比对算法。首先进行模... 详细信息

生物网络比对是分析不同生物间进化关系的重要手段,它可以揭示不同物种间的保守功能并为物种间的注释转移提供重要信息。网络比对与子图同构类似,是一个NP-hard问题。本文提出了一种新的分治与整合策略的生物网络比对算法。首先进行模块划分,并根据已有的比对信息计算模块相似性;然后根据模块间结点的子比对获取候选结果集,最终通过超图匹配获得比对结果。使用已有的比对信息的集体行为预估模块间的相似性,大大提高了模块匹配的效率。基于路径和结点的得分函数保证了模块内结点的相似性。对于不同网络间结点的相似性,分别从结点自身和结点间的差异进行相似性判断。与现有算法相比,本文算法在生物和拓扑指标上均表现最佳。

关键词：蛋白质相互作用网络网络比对分治模块化二分图特征向量中心性度中心性复杂网络

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Rapid Coal Quality Detection Based on Near-Infrared Diffuse Reflectance Spectroscopy

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Rapid Coal Quality Detection Based on Near-Infrared Diffuse ...