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Perfect optical nonreciprocity in a double-cavity optomechanical system

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Frontiers of physics 2019年第5期14卷 105-110页

作者： xiao-bo yan He-Lin Lu Feng Gao Liu yang College of Electronic Science Northeast Petroleum UniversityDaqing 163318China Department of Physics Yunnan Minzu UniversityKunming 650500China College of Science Shenyang Aerospace UniversityShenyang 110136China College of Automation Harbin Engineering UniversityHarbin 150001China

Nonreciprocal devices are *** for building quantuin networks and ubiquitous in modern communication ***,we propose to take advantage of the interference between optome-chanical interaction and lincarly-couplcd interaction to realize optical nonreciprocal transmission in a double-cavity optomechanical ***,we have derived essential conditions for perfect optical nonrcciprocity ancl analysed properties of the optical nonreciprocal *** results can be used to control optical transmission in quantum information processing.

关键词： optoinechanics optical nonreciprocity nonreciprocal transmission

Residual stress characteristics of butt-welded flange by finite element analysis

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Frontiers of Materials Science 2011年第2期5卷 216-223页

作者： Yong-Lun SONG xiao-Hong yanG Guo-Wei RAN Tian-Jiao xiao Si-bo yan College of Mechanical Engineering and Applied Electronics Technology Beijing University of Technology Beijing 100124 China

Finite element simulation is utilized in an aluminum alloy 2014 butt-welded flange under AC Tungsten Inert Gas （AC-TIG） welding condition. The simulated results are in good agreement with the residual stress for the plate test using the actual welding parameters. Furthermore, characteristics of residual stress could be investigated in detail in several aspects, such as the welding structures, the welding sequences, the time intervals, preheating, and repair weld. The intermittent welding may be more convenient and advantageous for the practical applications to reduce the stress, and the local repair welding may cause more stress within the repairing region obviously.

关键词： finite element method high-strength aluminum alloy butt weld residual stressl weld processes

Optomechanically induced amplification and perfect transparency in double-cavity optomechanics

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Frontiers of physics 2015年第3期10卷 113-119页

作者： xiao-bo yan W. Z. Jia Yong Li Jin-Hui Wu College of Electronic Science Northeast Petroleum University Daqing 163318 China College of Physics Jilin University Changehun 130012 China Quantum Optoelectronics Laboratory School of Physical Science and TechnologySouthwest Jiaotong University Chengdu 610031 China Beijing Computational Science Research Center Beijing 100084 China

We study optomechanically induced amplification and perfect transparency in a double-cavity op- tomechanical system. We find that if two control lasers with appropriate amplitudes and detunings are applied to drive the system, optomechanically induced amplification of a probe laser can occur. In addition, perfect optomechanieally induced transparency, which is robust to mechanical dissipation, can be realized by the same type of driving. These results indicate important progress toward signal amplification, light storage, fast light, and slow light in quantum information processes.

关键词： optomechanics optomechanically induced amplification optomechanically induced transparency

Isolation and Expression Patterns of Rice WRKY82 Transcription Factor Gene Responsive to both Biotic and Abiotic Stresses

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Agricultural Sciences in China 2011年第6期10卷 893-901页

作者： PENG Xi-xu TANG Xin-ke ZHOU Ping-lan HU Yao-jun DENG xiao-bo HE yan WANG Hai-hua School of Life Sciences Hunan University of Science and Technology Xiangtan 411201 P.R.China

WRKY transcription factors are involved in the regulation of response to biotic and abiotic stresses in plants. A full-length cDNA clone of rice WRKY82 gene （OsWRKY82） was isolated from a cDNA library generated from leaves infected by Magnaporthe grisea. OsWRKY82 contained an entire open reading frame in length of 1 701 bp, and was predicted to encode a polypeptide of 566 amino acid residues consisting of two WRKY domains, each with a zinc finger motif of C2H2, belonging to the WRKY subgroup I. OsWRKY82 shared high identity at the amino acid level with those from Sorghum bicolor, Hordeum vulgare, and Zea mays. The transcript level of OsWRKY82 was relatively higher in stems, leaves, and flowers, and less abundant in grains. It was induced by inoculation with M. grisea and Rhizoctonia solani. However, the inducible expression in incompatible rice-M. grisea interactions was earlier and greater than that in compatible interactions. The expression of OsWRKY82 was up-regulated by methyl jasmonate and ethephon, whereas salicylic acid exerted no effects on its expression. Moreover, OsWRKY82 exhibited transcriptional activation ability in yeast. Additionally, OsWRKY82 transcripts could be induced by wounding and heat shocking, but not by abscisic acid, cold, high salinity and dehydration. By contrast, gibberellin suppressed the expression of OsWRKY82. These indicate that OsWRKY82 is a multiply stress-inducible gene responding to both biotic and abiotic stresses, and may be involved in the regulation of defense response to pathogens and tolerance against abiotic stresses by jasmonic acid/ethylene-dependent signaling pathway.

关键词： WRKY transcription factor biotic stress abiotic stress gene expression Oryza sativa

Effects of RNA interference-induced tryptase down-regulation in P815 cells on IL-6 and TNF-α release of endothelial cells

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2008年第8期9卷 656-661页

作者： Yi-feng JIANG Feng-di ZHAO xiao-bo LI yan-xia NING Xiu-ling ZHI Rui-zhe QIAN Lian-hua YIN Department of Physiology and Pathophysiology Shanghai Medical College Fudan University Shanghai 200032 China

Objective： To explore the effects of down-regulated tryptase expression in mast cells on the synthesis and release of interleukin-6 （IL-6） and tumor necrosis factor-alpha （TNF-α） of vascular endothelial cells. Methods： Tryptase-siRNA （small-interfering RNA） vector was constructed to inhibit tryptase expression in P815 cells. The medium of P815 cells treated by the tryptase-siRNA （RNAi-P815 group） or pure vector （P815 group） was collected and used to culture bEnd.3 cells. The messenger RNAs （mRNAs） of IL-6 and TNF-α in bEnd.3 cells and their protein levels in the medium were measured by reverse transcription polymerase chain reaction （RT-PCR） and enzyme-linked immunosorbent assay （ELISA）, respectively. Results： IL-6 and TNF-α mRNAs in bEnd.3 cells cultured in RNAi-P815-conditioned medium decreased significantly compared to those in P815-conditioned medium. Consistently, lL-6 and TNF-α protein levels in the medium of bEnd.3 of RNAi-P815 group were lower than those of P815 group. Conclusion： Reduced tryptase expression significantly inhibited the synthesis and release of IL-6 and TNF-α in vascular endothelial cells. RNA interference targeting tryptase expression may be a new anti-inflammatory strategy for vascular diseases.

关键词： Tryptase RNA interference lnterleukin-6 (IL-6) Tumor necrosis factor-alpha (TNF-α) Endothelial cells

社会创新视阈下的知识动员:一个理论分析框架

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科学学研究 2022年第5期40卷 787-795页

作者：肖彦博北京中医药大学北京100029

社会创新是解决贫困、环境污染、贫富分化加剧等社会问题的有效途径,社会创新与科技创新同等重要,但其成果转化和实践机制更为复杂,需知识生产者和知识使用者的交流与合作生产。知识动员能打通知识主体间的“藩篱”,有效对接知识生产者... 详细信息

社会创新是解决贫困、环境污染、贫富分化加剧等社会问题的有效途径,社会创新与科技创新同等重要,但其成果转化和实践机制更为复杂,需知识生产者和知识使用者的交流与合作生产。知识动员能打通知识主体间的“藩篱”,有效对接知识生产者和知识使用者,改变知识主体间“各自为政”的局面,提升社会创新水平。现有关于知识动员和社会创新的文献呈碎片化,分散在不同的研究领域。研究以2007年-2020年间的224篇文献为样本,系统梳理了知识动员的概念框架、运行机制、演进范式,并基于四螺旋理论,探讨了知识动员与社会创新的关系,构建了社会创新视阈下知识动员的理论分析框架,为弥合社会创新的理论与实践鸿沟、有效推动社会创新研究成果转化提供理论支撑。研究结果表明,知识动员不同于传统的知识单向转移和线性传播,而是知识生产者和使用者的双向互动与知识的共享。知识动员具有复杂性、回应性、情境性、系统性等特点,是由知识生产者、知识使用者、知识中介以及所在情境等要素组成的复杂系统。知识动员包含了生产者拉动、使用者推动、知识交流和知识合作生产四种模式,经历了从线性模型到循环迭代模型的演化发展历程,其运行机制是一个包括研究、传播、利用和影响等阶段在内的循环迭代过程。在这个过程中,社会公众被纳入社会创新系统,形成了包括政府、大学、企业、公众在内的创新生态系统,不同知识主体不断交流互动,推动知识共同生产,实现价值增盈。

关键词：知识动员社会创新理论框架合作生产

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水溶性离子液体对甲苯的吸收效果及影响因素

环境工程学报 2017年第3期11卷 1683-1690页

作者：张乐肖潇晏波肖贤明中国科学院广州地球化学研究所有机地球化学国家重点实验室与广东省环境资源利用与保护重点实验室广州510640 中国科学院大学北京100049

选择3种水溶性离子液体(十二烷基咪唑氯盐(DDMIM Cl)、十二烷基咪唑硝酸盐(DDMIM NO_3)、十二烷基咪唑双氰胺盐(DDMIM DCA))作为研究对象寸模拟曱苯废气进行吸收实验,研究了吸收液的吸收性能、甲苯浓度、吸收液浓度、进气气速以及盐度... 详细信息

选择3种水溶性离子液体(十二烷基咪唑氯盐(DDMIM Cl)、十二烷基咪唑硝酸盐(DDMIM NO_3)、十二烷基咪唑双氰胺盐(DDMIM DCA))作为研究对象寸模拟曱苯废气进行吸收实验,研究了吸收液的吸收性能、甲苯浓度、吸收液浓度、进气气速以及盐度等因素对吸收效果的影响以及加热蒸馏法对吸收液的再生与甲苯回收的可行性。结果表明:不同的离子液体对甲苯的吸收率不同J)DMIM DCA的吸收效果最好在质量分数为5%时,初始吸收率达到98%,饱和吸收量为53.39 mg·L^(-1),而DDMIM CKDDMIM NO_3对甲苯的初始吸收率在92%左右,饱和吸收量分别为33.60,37.01 mg·L^(-1);甲苯饱和吸收量与吸收液浓度、甲苯进气浓度呈正相关,与进气气速、含盐度呈负相关;传质系数与甲苯进气浓度、进气气速以及含盐度呈正相关,与吸收液浓度呈负相关;采用加热蒸馏法进行甲苯回收及吸收液再利用时用苯的回收效率达到85%~90%且甲苯的饱和吸收量随着重复利用次数的增加而基本保持不变。因此利用离子液体溶液处理甲苯废气理论上是可行的。

关键词：离子液体甲苯废气蒸馏再生回收

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高产玉米栽培中的氮肥分期优化技术研究

农业现代化研究 2005年第2期26卷 141-144页

作者：肖焱波苏凡段宗颜云南民族大学化学与生物技术学院云南昆明650031 云南省农业科学院农业环境资源研究所云南昆明650205

1999—2000年在云南省祥云县草甸土壤上进行移栽玉米的不同水平氮肥试验研究,对移栽玉米在产量、氮素吸收及不同氮肥处理下土壤剖面中硝酸盐残留进行了研究。研究中发现祥云坝区玉米种植中农民习惯施但量明显偏高,在目标产量为1032kg/hm... 详细信息

1999—2000年在云南省祥云县草甸土壤上进行移栽玉米的不同水平氮肥试验研究,对移栽玉米在产量、氮素吸收及不同氮肥处理下土壤剖面中硝酸盐残留进行了研究。研究中发现祥云坝区玉米种植中农民习惯施但量明显偏高,在目标产量为1032kg/hm2时最佳施氮量为250kg/hm2,仅相当于农民习惯施氮量的45%。合理施用氮肥,无论对减少农民的投入,还是降低氮肥潜在的环境污染,都有不可忽视的意义。

关键词：氮肥高产玉米施氮量移栽栽培目标产量合理施用农民玉米种植优化技术

滇中粮食高产区基于土壤N_(min)测试下小麦氮肥推荐的研究

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中国土壤与肥料 2006年第3期 21-23,30页

作者：肖焱波金航段宗颜苏凡云南民族大学化学与生物技术学院昆明650031 云南省农业科学院农业资源环境研究所昆明650205

通过两年在两个点的田间试验，研究了滇中粮食高产区基于土壤Nmax测试进行小麦氮肥推荐的可行性。结果表明0-30cm土壤层初始无机氮可较好地用于代表土壤氮的供应能力。达到99％小麦相对产量时所需的最佳供氮量，在祥云点和宜良点分别为... 详细信息

通过两年在两个点的田间试验，研究了滇中粮食高产区基于土壤Nmax测试进行小麦氮肥推荐的可行性。结果表明0-30cm土壤层初始无机氮可较好地用于代表土壤氮的供应能力。达到99％小麦相对产量时所需的最佳供氮量，在祥云点和宜良点分别为129、233kg·hm^-2，土壤剖面无机氮的不足部分应以氮肥加以补充，依此进行小麦氮肥推荐。

关键词：土壤层硝态氮小麦