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Chinese Journal of Mechanical Engineering 2020年第6期33卷 205-217页

作者： Yanquan Wu Chunbo Zhang Jun Zhou Wu liang yunlei li Research and Development Center Harbin Welding Institute Limited CompanyHarbin150028China China Academy of Machinery Science and Technology Group Co. LtdBeijing100044China

The current research of titanium alloy on friction welding process in the field of aero-engines mainly focuses on the linear friction *** to the linear friction welding,inertial friction welding of titanium alloy still has important application position in the welding of aero-engine rotating ***,up to now,few reports on inertial friction welding of titanium alloy are *** this paper,the near-alpha TA19 titanium alloy welded joint was successfully obtained by inertial friction welding(IFW)*** microstructures and mechanical properties were investigated *** showed that the refined grains within 15‒20μm and weak texture were found in the weld zone due to dynamic recrystallization caused by high temperature and plastic *** weld zone consisted of acicularα′martensite phase,αp phase and metastableβ*** lath-shapedαs andβphase in base metal were transformed into acicular martensiteα′phase and metastableβphase in thermo-mechanically affected zone and heat affected *** a result,the microhardness of welded joint gradually decreased from the weld zone to the base *** specimens in room temperature and high temperature of 480℃ were all fractured in base metal illustrating that the inertia friction welded TA19 titanium alloy joint owned higher tensile strength compared to the base metal.

关键词： Inertia friction welding TA19 Micostructure Mechanical property Texture

Poultry genetic heritage cryopreservation and reconstruction:advancement and future challenges

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Journal of Animal Science and Biotechnology 2023年第1期14卷 15-32页

作者： Yanyan Sun yunlei li Yunhe Zong Gamal M.K.Mehaisen Jilan Chen Key Laboratory of Animal(Poultry)Genetics Breeding and Reproduction Ministry of Agriculture and Rural AffairsInstitute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193China. Department of Animal Production Faculty of AgricultureCairo UniversityGiza 12613Egypt.

Poultry genetics resources,including commercial selected lines,indigenous breeds,and experimental lines,are now being irreversibly lost at an alarming rate due to multiple reasons,which further threats the future livelihood and academic *** of germplasm may reduce the risk of catastrophic loss of genetic diversity by guaranteeing that a pool of genetic variability is available to ensure the reintroduction and replenishment of the genetic *** setting up of biobanks for poultry is challenging because the high sensitiveness of spermatozoa to freezing–thawing process,inability to cryopreserve the egg or embryo,coupled with the females being heterogametic *** progress in cryobiology and biotechnologies have made possible the extension of the range of germplasm for poultry species available in cryobanks,including semen,primordial germ cells,somatic cells and *** this review,we introduce the state-of-the-art technologies for avian genetic resource conservation and breed reconstruction,and discuss the potential challenges for future study and further extending of these technologies to ongoing and future conservation efforts.

关键词： Breed reconstruction Cryopreservation Germplasm Gonad PGC Poultry Semen Somatic cell

Flexible Strain Sensors with Ultra‑High Sensitivity and Wide Range Enabled by Crack‑Modulated Electrical Pathways

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Nano-Micro Letters 2025年第3期17卷 246-264页

作者： Yunzhao Bai yunlei Zhou Xuanyu Wu Mengfei Yin liting Yin Shiyuan Qu Fan Zhang Kan li YongAn Huang State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Flexible Electronics Research Center Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200People’s Republic of China School of Mechano‑Electronic Engineering Xidian UniversityXi’an 710071People’s Republic of China Department of Aerospace and Mechanical Engineering University of Southern CaliforniaLos AngelesCA 90089USA

This study presents a breakthrough in flexible strain sensor technology with the development of an ultrahigh sensitivity and wide-range sensor,addressing the critical challenge of reconciling sensitivity with measurement *** by the structure of bamboo slips,we introduce a novel approach that utilises liquid metal to modulate the electrical pathways within a cracked platinum fabric *** resulting sensor demonstrates a gauge factor greater than 108 and a strain measurement capability exceeding 100%.The integration of patterned liquid metal enables customisable tuning of the sensor’s response,while the porous fabric structure ensures superior comfort and air permeability for the *** design not only optimises the sensor’s performance but also enhances the electrical stability that is essential for practical *** systematic investigation,we reveal the intrinsic mechanisms governing the sensor’s response,offering valuable insights for the design of wearable strain *** sensor’s exceptional performance across a spectrum of applications,from micro-strain to large-strain detection,highlights its potential for a wide range of real-world uses,demonstrating a significant advancement in the field of flexible electronics.

关键词： Flexible strain sensor Fabric Crack Response regulation Epidermal device

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“新农保”对农村老年人生活质量的影响

湖南师范大学社会科学学报 2018年第2期47卷 112-120页

作者：李云蕾中国社会科学院研究生院人口与劳动经济系劳动经济学专业北京102488

新农保改善参保老人的生理健康,但使心理健康恶化,且影响具有时滞性;新农保对老人获得的代际转移具有挤出效应,但增加了其获得日常照料和精神慰藉的概率;新农保提高了老人的医疗服务利用率;新农保改善参保老人的生活方式,增加了参加社... 详细信息

新农保改善参保老人的生理健康,但使心理健康恶化,且影响具有时滞性;新农保对老人获得的代际转移具有挤出效应,但增加了其获得日常照料和精神慰藉的概率;新农保提高了老人的医疗服务利用率;新农保改善参保老人的生活方式,增加了参加社会活动和锻炼的概率;新农保养老金额的不断上调,对上述几个方面亦具有改善作用。因此,要继续提高新农保的保障范围和水平,尽可能满足老人在心理层面的诉求,不断改善农村老人的生活质量。

关键词：新农保农村老年人生活质量

Monochromatic green light stimulation during incubation shortened the hatching time via pineal function in White Leghorn eggs

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Journal of Animal Science and Biotechnology 2021年第3期12卷 1226-1235页

作者： Panlin Wang Yanyan Sun yunlei li Jing Fan Yunhe Zong Adamu Mani Isa Lei Shi Yuanmei Wang Aixin Ni Pingzhuang Ge linlin Jiang Shixiong Bian Hui Ma Zhengdong Yuan Xiaolin liu Jilan Chen Institute of Animal Sciences Chinese Academy of Agricultural SciencesKey Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsBeijing 100193China College of Animal Science and Technology Northwest A&F UniversityYangling 712100China Beijing DQY Agricultural Science and Technology Co. Ltd.Beijing 100094China

Background:Effect of monochromatic green light illumination on embryo development has been reported in *** avian pineal gland is an important photo-endocrine organ formed by a mediodorsal protrusion during embryonic ***,the involvement of pineal gland in the light transduction process remains to be *** the present study,we investigated the influence of monochromatic green light on hatching time and explored the possible mechanism via pineal ***:A total of 600 eggs of White Leghorn(Shaver strain)were incubated under photoperiods of either 12 h of light and 12 h of darkness using monochromatic green light(12L:12D group)or 24 h of darkness(0L:24D group)for 18 *** to 0L:24D group,the green light stimulation shortened the hatching time without extending the hatch window or impairing *** liver of embryos incubated in the 12L:12D light condition was heavier than those of the 0L:24D group on d 21 post incubation which may be linked to the observed increase in the serum concentration of insulin-like growth factor 1(IGF-1);primary secretion of the *** structure analysis of pineal gland demonstrated that the light stimulation increased follicle area,wall thickness and lumen area on d 10 and d 12 post *** function analysis demonstrated that three clock related genes(brain and muscle ARNT-like-1,BMAL1;circadian locomotor output cycles kaput,CLOCK;and cryptochrome-1,CRY1)and a melatonin rate-limiting enzyme related gene(arylalkylamine N-acetyltransferase,AANAT)were rhythmically expressed in the pineal gland of the 12L:12D group,but not in the 0L:24D ***,the light stimulation also increased the concentration of melatonin(MT),which was linked to hepatocyte proliferation and IGF-1 secretion in previous ***:The 12L:12D monochromatic green light stimulation during incubation shortened hatching time without impairing hatching *** gland’s ear

关键词： Circadian rhythm Hatching time Insulin-like growth factor 1 Melatonin Monochromatic green light Pineal gland

艺术中的“真实”、时间与风景——《艳阳天》再解读

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当代作家评论 2020年第4期 57-67页

作者：李云雷《文艺报》新闻部

浩然是新中国成立后成长起来的作家,他的创作从20世纪50年代一直延续到90年代,其间有过成功与辉煌,也有过落寞与争论。在"十七年""文革""新时期"等不同时段,浩然都写出了重要的作品,《艳阳天》《金光大道》《苍生》都是一个时代的代表... 详细信息

浩然是新中国成立后成长起来的作家,他的创作从20世纪50年代一直延续到90年代,其间有过成功与辉煌,也有过落寞与争论。在"十七年""文革""新时期"等不同时段,浩然都写出了重要的作品,《艳阳天》《金光大道》《苍生》都是一个时代的代表性作品。《艳阳天》是浩然最著名、影响最大的小说之一,但迄今为止,学界对这一作品的评价却陷入简单的二分法,即一方面肯定其"生活气息浓厚",另一方面认为阶级斗争理论对小说整体造成了伤害。在本文中,笔者试图对这一思路做出超越,即一方面具体分析历史真实在文本中是如何生成了艺术真实,又如何与意识形态的要求相混杂,产生了特定时期的代表性文本;另一方面通过对小说时间处理、结构方式、风景描写的分析,探讨其作为一部艺术作品的创造性与独特性,恢复其文学经典的定位,并进一步分析这种创作方式可能具有的启发性意义。

关键词：《艳阳天》艺术真实《金光大道》文学经典阶级斗争理论二分法艺术作品风景描写

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《家山》:南方史诗与民族精神的重构

中国文学批评 2023年第4期 59-65,188页

作者：李云雷《小说选刊》杂志社北京100013

王跃文的《家山》是一部具有浓郁地方风情的史诗性作品。将其与《红旗谱》《创业史》等革命历史小说、《古船》《白鹿原》等家族史诗以及《红楼梦》《金瓶梅》等传统中国小说加以比较,可以看到这一作品在文学史视野中具有突出的艺术特... 详细信息

王跃文的《家山》是一部具有浓郁地方风情的史诗性作品。将其与《红旗谱》《创业史》等革命历史小说、《古船》《白鹿原》等家族史诗以及《红楼梦》《金瓶梅》等传统中国小说加以比较,可以看到这一作品在文学史视野中具有突出的艺术特色。其对南方史诗的描绘,及对民族美学的探索和民族精神的重构,值得重视与思考。

关键词：家族文化南方史诗民族精神民族美学

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2007:“底层文学”的理论与实践

文艺理论与批评 2008年第1期 22-29页

作者：李云雷中国艺术研究院

2007年,"底层文学"在理论与实践方面都取得了突出的进展,尽管大多数评论家仍持批评的态度,但即使对于这些评论家来说,"底层文学"也已经成为了一种不可忽视的存在,在他们的批评文章中,有的也采取了一种抽象肯定、具体否定,或者在否定之... 详细信息

2007年,"底层文学"在理论与实践方面都取得了突出的进展,尽管大多数评论家仍持批评的态度,但即使对于这些评论家来说,"底层文学"也已经成为了一种不可忽视的存在,在他们的批评文章中,有的也采取了一种抽象肯定、具体否定,或者在否定之前简单肯定的做法,这表明中国现实及"底层文学"的发展,已经使部分评论家发生了改变,尽管这一改变是有限的;而赞同"底层文学"的评论家,则提出了"新的人民性"、"底层文学的先锋性"、"新的美学原则"等新的命题,不断将关于底层文学的讨论引向深入.但就总体来说,"底层文学"的讨论还没有摆脱赞同或反对的态度之争,在理论上并没有更多新的建树,本文根据"底层文学"的创作实践,在理论上提出一些命题,希望能为这一讨论开拓出新的空间.

关键词：底层文学理论与实践评论家美学原则先锋性批评否定抽象

一个人的“金光大道”——关于浩然研究的几个问题

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文艺理论与批评 2008年第3期 60-65页

作者：李云雷中国艺术研究院

浩然先生去世之后,不少报刊发了文章,此外还有一些纪念性的散文等.但这些文章除了怀旧(怀念浩然,或者怀念他们阅读浩然作品的感受等),对浩然的评价基本上还停留在80年代初的水平上.一般会认为浩然是个好人,或者对《艳阳天》、《苍生》... 详细信息

浩然先生去世之后,不少报刊发了文章,此外还有一些纪念性的散文等.但这些文章除了怀旧(怀念浩然,或者怀念他们阅读浩然作品的感受等),对浩然的评价基本上还停留在80年代初的水平上.一般会认为浩然是个好人,或者对《艳阳天》、《苍生》有较高的评价.在肯定《艳阳天》时,一般会认为其中对农村日常生活的描绘艺术价值较高,而"阶级斗争"理论则对之造成了伤害,等等——这基本上是80年代以来的"定论"了.

关键词：浩然大道个人《艳阳天》 80年代《苍生》纪念性文章

《红楼梦》传统、生活史诗与“人类文明新形态”——罗伟章《谁在敲门》简论

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当代文坛 2022年第1期 73-79页

作者：李云雷《小说选刊》杂志社

罗伟章的《谁在敲门》对当代生活做出了整体性描绘,是近年来长篇小说最为重要的收获之一。作者借鉴《红楼梦》的传统与“奇书体”,寻找到独特的艺术形式和叙述方法——零度写作、网状叙事与漫谈的艺术,以耐心与细致的艺术方式,深入到当... 详细信息

罗伟章的《谁在敲门》对当代生活做出了整体性描绘,是近年来长篇小说最为重要的收获之一。作者借鉴《红楼梦》的传统与“奇书体”,寻找到独特的艺术形式和叙述方法——零度写作、网状叙事与漫谈的艺术,以耐心与细致的艺术方式,深入到当代中国乡村的内部皱褶和细微之处,在世道人心之变中书写时代之变与中国之变,为我们勾勒出了一幅整体的时代生活史诗,也呈现出了我们这个时代“人类文明新形态”的丰富性与新颖性。

关键词：《红楼梦》传统生活史诗网状叙事人类文明新形态

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