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长江下游地区味优高产协同粳稻的品种特性

中国农业科学 2024年第4期57卷 820-830页

作者：朱天赐马天封柯健朱铁忠何海兵尤翠翠吴晨阳王冠军武立权安徽农业大学农学院庐江县农业技术推广中心颍上县农业绿色发展推进中心

【目的】探明长江下游地区味优高产协同粳稻品种共性农艺与生理特征，为实现区域稻米产量和品质协同提升提供理论依据和技术支撑。【方法】于2018年和2022年，分别采用14个和13个常规粳稻品种开展品种筛选试验，系统比较不同品种的产量... 详细信息

【目的】探明长江下游地区味优高产协同粳稻品种共性农艺与生理特征，为实现区域稻米产量和品质协同提升提供理论依据和技术支撑。【方法】于2018年和2022年，分别采用14个和13个常规粳稻品种开展品种筛选试验，系统比较不同品种的产量及构成、食味品质及质构特性，以及生物量、茎鞘非结构性碳水化合物(NSC)、群体光合势(LAD)等农艺与生理指标的差异。【结果】品种间的食味值和产量具有较大变幅，为此，按食味值和产量进行聚类，将不同水稻品种分为味中低产(ML)、味中高产(MH)和味优高产(GH)3种类型。GH类型品种2年的平均食味值和产量分别为68.5和10.2 t·hm-2，较MH和ML综合提高食味值6.8%、产量14.6%。从产量和品质性状的表现来看，与MH和ML相比，GH类型品种表现最高的结实率和口感得分。从生物量积累的过程来看，GH类型品种增加了灌浆初期的干物质积累比例，表现最高的抽穗-抽穗后15d的干物质积累。进一步分析此阶段干物质积累成因发现，GH类型品种在稳定增加LAD的同时，显著增加了茎鞘中NSC的转运率。相关性分析表明，水稻结实率与口感得分、抽穗-抽穗后15 d的干物质积累和LAD及NSC转运率均呈极显著正相关关系。【结论】在保持较高的抽穗-抽穗后15 d LAD(100.4 m2·m-2·d)的同时，进一步提高灌浆期茎鞘NSC的转运率(79.9%)促进灌浆启动，增加抽穗-抽穗后15 d干物质积累(3.6 t·hm-2)，提高水稻结实率(95.4%)和口感(9.6)，是该区域味优高产协同水稻品种的共性特征。此外，研发以提高灌浆期NSC转运量和抽穗期植株茎鞘NSC积累为目标的水肥管理技术，有望进一步发挥上述味优高产协同品种的产量和食味品质潜力。

关键词：长江下游地区粳稻味优高产结实率茎鞘非结构性碳水化合物转运

Enhancing milk quality and modulating rectal microbiota of dairy goats in starch‑rich diet:the role of bile acid supplementation

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Journal of Animal Science and Biotechnology 2024年第2期15卷 862-877页

作者： Qingyan Yin Junjian Yu Jiaxiao Li tianci Zhang Tianyu Wang Yufei zhu Jun Zhang Junhu Yao College of Animal Science and Technology Northwest A&F UniversityYangling 712100ShaanxiP.R.China Key Laboratory of Livestock Biology Northwest A&F UniversityYangling 712100ShaanxiP.R.China DAYU Bioengineering(Xi’an)Industrial Development Research Institute Xi’an 710000ShaanxiP.R.China

Background Diets rich in starch have been shown to increase a risk of reducing milk fat content in dairy *** bile acids(BAs)have been used as a lipid emulsifier in monogastric and aquatic animals,their effect on ruminants is not well *** study aimed to investigate the impact of BAs supplementation on various aspects of dairy goat physiology,including milk composition,rumen fermentation,gut microbiota,and BA *** We randomly divided eighteen healthy primiparity lactating dairy goats(days in milk=100±6 d)into two groups and supplemented them with 0 or 4 g/d of BAs undergoing 5 weeks of feeding on a starch-rich *** results showed that BAs supplementation positively influenced milk yield and improved the quality of fatty acids in goat *** supplementation led to a reduction in saturated fatty acids(C16:0)and an increase in monounsaturated fatty acids(cis-9 C18:1),resulting in a healthier milk fatty acid *** observed a significant increase in plasma total bile acid concentration while the proportion of rumen short-chain fatty acids was not ***,BAs supplementation induced significant changes in the composition of the gut microbiota,favoring the enrichment of specific bacterial groups and altering the balance of microbial *** analysis revealed associations between specific bacterial groups(Bacillus and Christensenellaceae R-7 group)and BA types,suggesting a role for the gut microbiota in BA *** prediction analysis revealed notable changes in pathways associated with lipid metabolism,suggesting that BAs supplementation has the potential to modulate lipid-related *** These findings highlight the potential benefits of BAs supplementation in enhancing milk production,improving milk quality,and influencing metabolic pathways in dairy *** research is warranted to elucidate the underlying mechanisms and explore the broader implications of these findi

关键词： Bile acids Dairy goats Lipid metabolism Gut microbiota

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Mass transfer process of peanut protein extracted by bis(2-ethylhexyl)sodium sulfosuccinate reverse micelles

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Grain & Oil Science and Technology 2024年第1期7卷 60-67页

作者： Chenxian Yang tianci Li Tingwei zhu Xiaojie Duan Yibao Chen Yandong Xu Fusheng Chen Kunlun Liu College of Food Science and Engineering Henan University of TechnologyZhengzhouHenan 450001China

The liquid-liquid extraction method using reverse micelles can simultaneously extract lipid and protein of oilseeds,which have become increasingly popular in recent ***,there are few studies on mass transfer processes and models,which are helpful to better control the extraction process of oils and *** this paper,mass transfer process of peanut protein extracted by bis(2-ethylhexyl)sodium sulfosuccinate(AOT)/isooctane reverse micelles was *** effects of stirring speed(0,70,140,and 210 r/min),temperature of extraction(30,35,40,45,and 50℃),peanut flour particle size(0.355,0.450,0.600,and 0.900 mm)and solidliquid ratio(0.010,0.0125,0.015,0.0175,and 0.020 g/mL)on extraction rate were *** results showed that extraction rate increased with temperature rising,particle size reduction as well as solid-liquid ratio increase respectively,while little effect of stirring speed(P>0.05)was *** apparent activation energy of extraction process was calculated as 10.02 kJ/mol and Arrhenius constant(A)was 1.91 by Arrhenius *** was a linear relationship between reaction rate constant and the square of the inverse of initial particle radius(1/r_(0)^(2))(P<0.05).This phenomenon and this shrinking core model were *** brief,the extraction process was controlled by the diffusion of protein from the virgin zone interface of particle through the reacted zone and it was in line with the first order *** transfer kinetics of peanut protein extracted by reverse micelles was established and it was verified by experimental *** results provide an important theoretical guidance for industrial production of peanut protein separation and purification.

关键词： AOT reverse micelles Peanut protein Kinetics Shrinking core model Mass transfer

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Evaluation method of underground water storage space and thermal reservoir model in abandoned mine

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Rock Mechanics Bulletin 2023年第2期2卷 84-97页

作者： Pingye Guo Meng Wang Guanjie Dang tianci zhu Jie Wang Manchao He State Key Laboratory for Geo-Mechanics and Deep Underground Engineering 100083BeijingChina School of Mechanics Architecture and Civil EngineeringChina University of Mining and Technology100083BeijingChina

A large number of mines are closed or abandoned every year in *** utilization is one of the important ways to efficiently reuse underground resources in abandoned *** to calculate the volume and distribution of underground water storage space is the key to accurately evaluate the sustainable geothermal production in abandoned *** this paper,according to the multi-scale characteristics of the underground space in abandoned mine,the flow and heat transfer equations in the multi-scale space are sorted out systematically,and the calculation methods of different secondary space volumes are derived in *** Jiahe abandoned mine as the background,the volume and distribution of underground secondary space are calculated,and three heat storage evaluation models considering different water storage spaces are established by using *** simulation results show that there are great differences among different models,and the results of the equivalent porous media model considering the multi-scale space are most consistent with the *** analyses of key parameters model results indicated that the heat production is closely related to not only the recharge flow rate but also the recharge temperature and operating ***,the energy saving and emission reduction benefits of geothermal utilization in abandoned mines are calculated,the results show that geothermal utilization of abandoned mines can effectively reduce energy consumption and CO_(2)emissions,and it has great economic benefits.

关键词： Abandoned mine Thermal reservoir model Underground water storage space Heat production Sustainability

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大数据思维下的广告创意传播误区探讨

艺术科技 2021年第11期34卷 8-9页

作者：朱天慈南京林业大学人文社会科学学院江苏南京210037

大数据概念的出现为广告传播赋能,精准推送技术使得广告主可以在海量的消费者中准确地选择出目标受众,广告的传播生态发生巨大变化。然而,广告主过分看中大数据、算法的力量,产生了“到达即有效”的思维误区,重投放、重到达、轻内容,导... 详细信息

大数据概念的出现为广告传播赋能,精准推送技术使得广告主可以在海量的消费者中准确地选择出目标受众,广告的传播生态发生巨大变化。然而,广告主过分看中大数据、算法的力量,产生了“到达即有效”的思维误区,重投放、重到达、轻内容,导致广告创意缺失、广告设计粗糙、广告传播暴力等问题增生。本文通过剖析广告生态在大数据算法下的变化,切实分析当下广告创意传播误区,从创意传播管理理论的角度为广告发展提出对策。

关键词：大数据广告生态靶子论创意传播 CCM理论

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网剧《赘婿》中的美学特征研究

艺术科技 2021年第10期34卷 69-70页

作者：朱天慈南京林业大学人文社会科学学院江苏南京210037

网剧《赘婿》一经开播便创下爱奇艺热度值最快破万的记录,这部剧通过“爽而不尬”的内容讲述了苏家赘婿宁毅在武朝闯荡出一片天地的故事。本文从网剧《赘婿》的故事内容和表现方式入手,从网剧体现出的古典与现代结合的混搭之美、沿用传... 详细信息

网剧《赘婿》一经开播便创下爱奇艺热度值最快破万的记录,这部剧通过“爽而不尬”的内容讲述了苏家赘婿宁毅在武朝闯荡出一片天地的故事。本文从网剧《赘婿》的故事内容和表现方式入手,从网剧体现出的古典与现代结合的混搭之美、沿用传统相声创作思路的喜剧之美和不同个性角色呈现出的人性之美分析网剧《赘婿》的美学特征。

关键词：《赘婿》美学特征混搭之美喜剧之美人性之美

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席慕蓉诗歌中的美学特征研究

艺术科技 2021年第8期34卷 170-171页

作者：朱天慈南京林业大学人文社会科学学院江苏南京210037

席慕蓉诗歌具备的美学特征吸引着一代又一代的人为之着迷。本文从内容和形式的角度分析席慕蓉的诗歌,发现其偏好使用“月、渡口、花、树”等中国古典诗词中的常见意象,并在诗歌创作中遵循一定的用韵手法,通过赋予客观事物以主观情感来... 详细信息

席慕蓉诗歌具备的美学特征吸引着一代又一代的人为之着迷。本文从内容和形式的角度分析席慕蓉的诗歌,发现其偏好使用“月、渡口、花、树”等中国古典诗词中的常见意象,并在诗歌创作中遵循一定的用韵手法,通过赋予客观事物以主观情感来抒发对爱情、故乡、生命的体会,使诗歌呈现出意象之美、浪漫之美、古典之美和韵律之美。

关键词：席慕蓉诗歌美学特征

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水力压裂解析模型裂缝扩展参数敏感性分析

力学季刊 2021年第2期42卷 263-271页

作者：王永亮张辛朱天赐张晴中国矿业大学(北京)力学与建筑工程学院北京100083 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室北京100083

水力压裂形成复杂裂缝网络是致密储层油气开采的重要技术,掌握水压裂缝扩展机理是控制压裂行为和优化压裂效果的关键.水压裂缝动态扩展行为涉及储层岩体、注入压裂液、压裂实施工艺等方面,其中水力压裂扩展时间、压裂液流体动力粘度系... 详细信息

水力压裂形成复杂裂缝网络是致密储层油气开采的重要技术,掌握水压裂缝扩展机理是控制压裂行为和优化压裂效果的关键.水压裂缝动态扩展行为涉及储层岩体、注入压裂液、压裂实施工艺等方面,其中水力压裂扩展时间、压裂液流体动力粘度系数、压裂液流体注入流速、储层岩石剪切模量成为决定裂缝扩展长度和裂缝开度的重要因素.本研究采用KGD、PKN两类等高解析模型对主控因素的参数敏感性进行分析,直观、快速、可靠地获得水压裂缝扩展长度、张开度动态演化行为的量化数值.研究发现,压裂持续开展过程中水压裂缝扩展长度呈线性增长、开度逐渐趋于稳定,高流体动力粘度导致裂缝难扩展、形成较大裂缝开度,通过增加压裂液流体注入流速可同时增加裂缝扩展长度和开度,较高的岩石剪切模量将降低水压裂缝的开度.通过对比两类解析模型在不同参数下的水压裂缝扩展结果,分析压裂参数与裂缝扩展的相关性和敏感系数,讨论水力压裂解析模型的裂缝扩展参数敏感性.

关键词：水压裂缝等高裂缝解析模型裂缝长度与开度动力粘度系数注入流速剪切模量敏感系数

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Few-shot incremental radar target recognition framework based on scattering-topology properties

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Chinese Journal of Aeronautics 2024年第8期37卷 246-260页

作者： Chenxuan LI Weigang zhu Bakun zhu Yonggang LI Graduate School Space Engineering UniversityBeijing 101400China Department of Electronic and Optical Engineering Space Engineering UniversityBeijing 101400China

The continuous emergence of new targets in open scenarios leads to a substantial decrease in the performance of Inverse Synthetic Aperture Radar(ISAR)recognition ***,data scarcity further exacerbates the challenge of identifying new classes of ISAR *** this paper,a few-shot incremental target recognition framework based on Scattering-Topology Properties(STPIL)is ***,STPIL extracts scattering-topology properties of ISAR targets as recognition ***,the pseudo-incremental training strategy effectively alleviates the algorithm’s forgetting of old knowledge,and improves compatibility with new ***,a feature embedding network,with few parameters,is designed based on the graph neural *** embedding network is highly adaptable to changes in data ***,STPIL fully considers the joint distribution and marginal distribution in scattering features,and uses the Brownian distance metric module to make the scattering-topology features more *** results on both the simulation dataset and the public measured data indicate that STPIL can effectively balance new classes with old classes,and has superior performance to other advanced methods in the incremental recognition of targets.

关键词： Brownian distance metric Graph neural networks Incremental learning Inverse Synthetic Aperture Radar(ISAR) Scattering