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Training Generative Adversarial Networks with Adaptive Composite Gradient

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Data Intelligence 2024年第1期6卷 120-157页

作者： Huiqing Qi Fang li shengli Tan Xiangyun Zhang School of Mathematical Sciences East China Normal UniversityShanghai 200241China

The wide applications of Generative adversarial networks benefit from the successful training methods,guaranteeing that an object function converges to the local ***,designing an efficient and competitive training method is still a challenging task due to the cyclic behaviors of some gradient-based ways and the expensive computational cost of acquiring the Hessian *** address this problem,we proposed the Adaptive Composite Gradients(ACG)method,linearly convergent in bilinear games under suitable *** analysis and toy-function experiments both suggest that our approach alleviates the cyclic behaviors and converges faster than recently proposed SOTA *** convergence speed of the ACG is improved by 33%than other *** ACG method is a novel Semi-Gradient-Free algorithm that can reduce the computational cost of gradient and Hessian by utilizing the predictive information in future *** mixture of Gaussians experiments and real-world digital image generative experiments show that our ACG method outperforms several existing technologies,illustrating the superiority and efficacy of our method.

关键词： Generative adversarial networks adaptive composite gradient semi-gradient free game theory bilinear game

Tributyrin administration improves intestinal development and health in pre-weaned dairy calves fed milk replacer

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Animal Nutrition 2022年第3期10卷 399-411页

作者： Shuai liu Junda Wu Zhaohai Wu Gibson Maswayi Alugongo Muhammad Zahoor Khan Jinghui li Jianxin Xiao Zhiyuan He Yulin Ma shengli li Zhijun Cao State Key Laboratory of Animal Nutrition College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Institute of Animal Husbandry and Veterinary Guizhou Academy of Agricultural SciencesGuizhou 550005China State Key Laboratory of Animal Nutrition Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China Department of Animal Science University of CaliforniaDavisCA 95616USA Faculty of Veterinary and Animal Sciences University of AgricultureDera Ismail Khan29220Pakistan

Butyrate and its derivatives possess various nutritional and biological benefits for mammals,whereas its effects on dairy calves have not been well *** study evaluated the effects of tributyrin administration on blood immune,intestinal immune and barrier functions,and microbial composition of pre-weaned dairy *** newborn Holstein bull calves were randomly assigned into a control group(no tributyrin supplementation,CON;n=10)or a treatment group(supplemented with tributyrin at 2 g/L of milk,TRB;n=10).The results showed that diarrhea frequency was decreased significantly by tributyrin administration from d 29 to 56(Plites,tributyrin administration significantly reduced the concentration of interleukin-1b(IL-1b)on d 28(P=0.001)and tended to reduce the concentration of serum amyloid A on d 56(P=0.079),whereas serum oxidative status parameters were not *** intestinal development,tributyrin administration increased the villus height(Plike receptor 2(TRL2,P=0.045)and IL-1b(P=0.088)gene expressions were downregulated,while claudin-4(P=0.022)gene expression was upregulated in the jejunum following tributyrin *** the ileum,claudin-4(P=0.029)and G-protein coupled receptor 41(P=0.019)gene expressions were upregulated in the TRB group compared to *** significantly higher abundances of microbiota were found in the jejunum or ileum of calves in the CON *** the TRB group,supplementing tributyrin significantly increased the abundance of shortchain fatty acid(SCFA)-producing bacteria,including Ruminococcaceae,Lachnospiraceae,Prevotella and Rikenellaceae(LDA>3.5,P<0.05),which was negatively associated with inflammatory gene expression(TLR2 and IL-1b)but positively associ

关键词： Dairy calves Tributyrin Gut microbiota Inflammation Barrier function

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不同浓度调环酸钙对大葱幼苗生长的影响

中国蔬菜 2024年第4期 106-114页

作者：王婧马付生胡鹏昊徐有权崔丹丹宋向达耿永琪何雪颖李胜利河南农业大学园艺学院河南郑州450046

以东森寒葱2号为试验材料,通过测定大葱苗期喷施调环酸钙(200、400、600、800 mg·L^(-1))处理的形态指标、叶绿素和根系活力等指标,探究不同浓度调环酸钙对大葱种苗质量的影响。结果表明,调环酸钙能有效增加大葱幼苗的假茎粗、假茎长... 详细信息

以东森寒葱2号为试验材料,通过测定大葱苗期喷施调环酸钙(200、400、600、800 mg·L^(-1))处理的形态指标、叶绿素和根系活力等指标,探究不同浓度调环酸钙对大葱种苗质量的影响。结果表明,调环酸钙能有效增加大葱幼苗的假茎粗、假茎长度和叶片叶绿素含量,提高根系活力、促进根系生长,且其适宜浓度为600 mg·L^(-1)。处理后21 d,与清水对照相比,600 mg·L^(-1)调环酸钙处理的假茎粗、假茎长和根系活力分别提高了22.0%、66.9%和65.7%;根系、假茎、叶片和全株干质量分别增加38.5%、48.4%、34.6%和37.9%。与200 mg·L^(-1)矮壮素处理相比,600 mg·L^(-1)调环酸钙处理的根冠比、壮苗指数和总叶绿素含量分别上升23.0%、37.0%和19.4%。综上,叶面喷施600 mg·L^(-1)的调环酸钙能有效提高大葱种苗质量。

关键词：调环酸钙大葱幼苗壮苗指数

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内蒙古地区羊肉脂肪酸指纹特征初探

家畜生态学报 2024年第1期45卷 29-38页

作者：金鹿张春华张振华李胜利张崇志珊丹胡晓晓孙海洲内蒙古自治区农牧业科学院动物营养与饲料研究所/内蒙古自治区草食动物营养科学重点实验室/农业农村部草食家畜健康养殖与畜产品品质调控重点室内蒙古呼和浩特010031

为了建立一种饲养方式与肉品质和脂肪酸特征关联的评价方法,该试验从内蒙古中部和西部3个盟市7个旗县采集羊肉样品194份,对肉中的脂肪酸含量进行测定,同时进行主成分分析(principal component analysis,PCA)。结果表明:(1)从不同饲养方... 详细信息

为了建立一种饲养方式与肉品质和脂肪酸特征关联的评价方法,该试验从内蒙古中部和西部3个盟市7个旗县采集羊肉样品194份,对肉中的脂肪酸含量进行测定,同时进行主成分分析(principal component analysis,PCA)。结果表明:(1)从不同饲养方式的羊肉脂肪酸PCA结果来看,所有羊肉样品未见显著差异(P>0.05),山羊肉中放牧和舍饲2种饲养方式有显著分离。放牧羊肉中饱和脂肪酸(saturated fatty acids,SFA)、十六烷酸(C16:0)和十八烷酸(C18:0)的含量显著高于舍饲羊肉,单不饱和脂肪酸(monounsaturated fatty acids,MUFA)和顺-9-十八碳烯酸(C18:1n9c)的含量显著低于舍饲羊肉(P<0.05)。(2)由不同地区的脂肪酸PCA结果得出,锡林郭勒、阿拉善地区与鄂尔多斯地区有显著的分离。鄂尔多斯地区羊肉SFA、C16:0、十七烷酸(C17:0)和C18:0含量显著高于其它地区(P<0.05);锡林郭勒地区多不饱和脂肪酸(polyunsaturated fatty acids,PUFA)、n-3PUFA和n-6PUFA含量显著高于其它地区(P<0.05),是其余2个地区的2~3倍;阿拉善盟MUFA和总脂肪酸(total fatty acids,TFA)含量显著高于其它地区(P<0.05),其中TFA含量是其它地区的3~5倍。(3)不同品种的脂肪酸PCA结果表明,鄂尔多斯细毛羊和苏尼特羊肉样品与阿拉善白绒山羊、蒙古羊、阿尔巴斯白绒山羊有显著分离。绵羊肉SFA、PUFA和α-亚麻酸(C18:3n3)含量显著高于山羊(P<0.05),其中n-3PUFA和n-6PUFA含量可达山羊的1.5~2倍;山羊肉MUFA和C18:1n9c含量显著高于绵羊(P<0.05)。(4)不同部位的脂肪酸PCA结果得出,3个部位羊肉样品聚类重叠,未见显著分离。肋间脂肪中SFA、十四烷酸(C14:0)、C16:0、C17:0、C18:0和顺-9-十六碳烯酸(C16:1)含量显著高于其它部位(P<0.05);股二头肌中MUFA、TFA和C18:1n9c含量显著高于其它部位(P<0.05);背最长肌中PUFA、C18:3n3和顺-9,12-十八碳烯酸(C18:2n6c)含量显著高于其它部位(P<0.05)。由此可见,不同的饲养方式、品种、地区和部位对内蒙古地区羊肉的脂肪酸指纹特征有影响。

关键词：羊肉饲养方式脂肪酸特征主成分分析

应用微卫星位点分析3个封闭群比格犬群体遗传结构

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实验动物科学 2024年第2期41卷 6-14页

作者：蒋辉李银银李长龙霍学云郭萌陈振文李胜利吕建祎杜小燕首都医科大学基础医学院北京100069 首都医科大学实验动物部北京100069

目的采用比格犬微卫星位点对多地小型比格犬群体进行遗传检测和群体结构分析,并评价所选位点是否适用于封闭群比格犬遗传质量控制。方法选取前期验证的微卫星位点20个,采用其已优化的PCR条件,对来自3个公司(西安、北京和江苏)的小型比... 详细信息

目的采用比格犬微卫星位点对多地小型比格犬群体进行遗传检测和群体结构分析,并评价所选位点是否适用于封闭群比格犬遗传质量控制。方法选取前期验证的微卫星位点20个,采用其已优化的PCR条件,对来自3个公司(西安、北京和江苏)的小型比格犬群体进行PCR扩增和STR扫描,经基因分型后计算群体遗传参数并进行群体遗传结构分析。结果西安、北京和江苏三地小型比格犬群体在20个微卫星位点的平均有效等位基因数分别为5.45、6.80、6.10,平均杂合度为0.5852、0.6538、0.6631,香农指数为1.1774、1.3844、1.3498,多态性信息含量分别为0.5397、0.6147、0.6181,说明三群体遗传多态性信息丰富,群体遗传多样性高。所选20个微卫星位点既能反映群体多态性,又能体现各群体的特征。结论3个比格犬群体的多态性较高,达到了封闭群要求。所选20个微卫星位点比较适合用于比格犬遗传质量检测。

关键词：比格犬微卫星DNA 群体遗传结构遗传信息遗传检测

全株玉米青贮有氧稳定性对延缓全混合日粮夏季发热的影响

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中国饲料 2024年第14期 88-92页

作者：李胜利杨茁萌周娟李怀安王春江纪大永谢金梅王东海张效忠盛祥参中国农业大学动物科技学院北京100193 北京厚德瑞商贸有限公司北京100071 天津嘉立荷牧业有限公司天津300000 现代牧业(集团)有限公司内蒙古呼和浩特011500

本文通过研究不同有氧稳定性的全株玉米青贮对全混合日粮(TMR)在夏季发热的影响,以期探索防止TMR发热的新途径。本研究选择制作工艺和营养水平相似的3个青贮窖进行全株玉米青贮及其TMR有氧稳定性测定。制作全株玉米青贮时,青贮窖A喷洒... 详细信息

本文通过研究不同有氧稳定性的全株玉米青贮对全混合日粮(TMR)在夏季发热的影响,以期探索防止TMR发热的新途径。本研究选择制作工艺和营养水平相似的3个青贮窖进行全株玉米青贮及其TMR有氧稳定性测定。制作全株玉米青贮时,青贮窖A喷洒了乳酸菌发酵剂2,青贮窖B喷洒乳酸菌发酵剂1和有机酸盐保鲜剂,青贮窖C中全株玉米青贮喷洒了乳酸菌发酵剂1。同时测定,3种全株玉米青贮及其TMR的有氧稳定性。结果表明,青贮窖A、青贮窖B和青贮窖C的全株玉米青贮有氧稳定性分别为36 h、>85.8 h和>79.5 h。相对应的全株玉米青贮制作出的TMR有氧稳定性分别为9.5、31.5和29.5 h。由此可见,有氧稳定性好的全株玉米青贮可以延缓奶牛TMR的二次发酵,提高其有氧稳定性。

关键词：全株玉米青贮 TMR 有氧稳定性二次发酵

Microstructure and properties of as-cast Cu-Cr-Zr alloys with lanthanum addition

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Journal of Rare Earths 2018年第4期36卷 424-429页

作者： Jilin li lili Chang shengli li Xinde Zhu Zhongxin An Department of Material Science and Engineering Shandong UniversityJinan 250061China Zhengzhou Yutong Bus Co.Ltd. Zhengzhou 450061China

Cu-0.45 Cr-0.2 Zr-xLa（x = 0-0.48） alloys were prepared by vacuum casting. The effects of La addition and orientation on the microstructure and properties of the as-cast alloy were investigated by an optical microscope, a scanning electron microscope with an energy dispersive X-ray spectrometer, a tensile testing machine and an electrical conductivity tester. The result shows that the addition of La significantly refines the columnar grainsize and decreases the secondary dendrite arm spacing. Trace addition of La improves the room temperature ultimate tensile strength,elongation and electrical conductivity mainly by purifying during melting and casting. The ultimate tensile strength, elongation and electrical conductivity significantly decrease with the increase of La content due to formation of coarse particles and oxides, which severely harm the performance of the Cu-0.45 Cr-0.2 Zr-xLa alloys. The Cu-0.45 Cr-0.2 Zr-0.13 La alloy possesses a good combination of room temperature ultimate tensile strength, elongation and electrical conductivity. In addition, room temperature ultimate tensile strength and electrical conductivity along transverse direction of the ingot are higher than that along longitudinal direction,which is mainly ascribed to different distribution of grain boundary and grain orientation.

关键词： La Cu-Cr-Zr alloy Orientation Ultimate tensile strength Electrical conductivity Rare earths

Predicting nitrogen use efficiency,nitrogen loss and dry matter intake of individual dairy cows in late lactation by including mid‑infrared spectra of milk samples

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Journal of Animal Science and Biotechnology 2023年第3期14卷 1287-1299页

作者： Rui Shi Wenqi Lou Bart Ducro Aart van der linden Han A.Mulder Simon J.Oosting shengli li Yachun Wang Laboratory of Animal Genetics Breeding and ReproductionMinistry of Agriculture of ChinaNational Engineering Laboratory of Animal BreedingCollege of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China Wageningen University&Research Animal Breeding and Genomics P.O.Box 3386700 AH Wageningenthe Netherlands Animal Production System Group Wageningen University&ResearchP.O.Box 3386700 AH Wageningenthe Netherlands

Background Nitrate leaching to groundwater and surface water and ammonia volatilization from dairy farms have negative impacts on the ***,the increasing demand for dairy products will result in more pollution if N losses are not ***,a more efficient,and environmentally friendly production system is needed,in which nitrogen use efficiency(NUE)of dairy cows plays a key *** genetically improve NUE,extensively recorded and cost-effective proxies are essential,which can be obtained by including mid-infrared(MIR)spectra of milk in prediction models for *** study aimed to develop and validate the best prediction model of NUE,nitrogen loss(NL)and dry matter intake(DMI)for individual dairy cows in *** A total of 86 lactating Chinese Holstein cows were used in this *** data editing,704 records were obtained for calibration and *** prediction models with three different machine learning algorithms and three kinds of pre-processed MIR spectra were developed for each *** showed that the coefficient of determination(R2)of the best model in within-herd validation was 0.66 for NUE,0.58 for NL and 0.63 for *** external validation,reasonable prediction results were only observed for NUE,with R2 ranging from 0.58 to 0.63,while the R2 of the other two traits was below *** infrared waves from 973.54 to 988.46 cm−1 and daily milk yield were the most important variables for *** The results showed that individual NUE can be predicted with a moderate accuracy in both within-herd and external *** model of NUE could be used for the datasets that are similar to the calibration *** prediction models for NL and 3-day moving average of DMI(DMI_a)generated lower accuracies in within-herd *** also indicated that information of MIR spectra variables increased the predictive ability of ***,pre-processed MIR spectra do not result in higher acc

关键词： Dairy cow Environment Mid-infrared spectra Nitrogen use efficiency Prediction

Sedimentary Microfacies and Porosity Modeling of Deep-Water Sandy Debris Flows by Combining Sedimentary Patterns with Seismic Data： An Example from Unit I of Gas Field A, South China Sea

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 182-194页

作者： li shengli YU Xinghe JIN Jianli The Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism Ministry of EducationChinaSchool of Energy ResourcesChina University of Geosciences(Beijing)Beijing 100083China

Sandy debris flow deposits are present in Unit I during Miocene of Gas Field A in the Baiyun Depression of the South China Sea. The paucity of well data and the great variability of the sedimentary microfacies make it difficult to identify and predict the distribution patterns of the main gas reservoir, and have seriously hindered further exploration and development of the gas field. Therefore, making full use of the available seismic data is extremely important for predicting the spatial distribution of sedimentary microfacies when constructing three-dimensional reservoir models. A suitable reservoir modeling strategy or workflow controlled by sedimentary microfacies and seismic data has been developed. Five types of seismic attributes were selected to correlate with the sand percentage, and the root mean square （RMS） amplitude performed the best. The relation between the RMS amplitude and the sand percentage was used to construct a reservoir sand distribution map. Three types of main sedimentary microfacies were identified： debris channels, fan lobes, and natural levees. Using constraints from the sedimentary microfacies boundaries, a sedimentary microfacies model was constructed using the sequential indicator and assigned value simulation methods. Finally, reservoir models of physical properties for sandy debris flow deposits controlled by sedimentary microfacies and seismic inversion data were established. Property cutoff values were adopted because the sedimentary microfacies and the reservoir properties from well-logging interpretation are intrinsically different. Selection of appropriate reservoir property cutoffs is a key step in reservoir modeling when using simulation methods based on sedimentary microfacies control. When the abnormal data are truncated and the reservoir properties probability distribution fits a normal distribution, microfacies-controlled reservoir property models are more reliable than those obtained from the sequence Gauss simulation me

关键词： sandy debris flow deposit seismic attribute and inversion geological modeling controlled by micro-facies data truncated process