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航空第二动力系统技术综述

航空动力学报 2024年第8期39卷 327-343页

作者：周洲刘闯朱学忠朱姝姝南京航空航天大学自动化学院南京211106

第二动力系统(SPS)是承担关键任务的复杂机载系统。以美军装备为例分别介绍了典型的机械传动SPS、气压传动SPS和电气传动SPS并对三者的优缺点进行了总结,回顾了美军与国防承包商的SPS研发历程并分析了它们的技术特点,总结了先进SPS的四... 详细信息

第二动力系统(SPS)是承担关键任务的复杂机载系统。以美军装备为例分别介绍了典型的机械传动SPS、气压传动SPS和电气传动SPS并对三者的优缺点进行了总结,回顾了美军与国防承包商的SPS研发历程并分析了它们的技术特点,总结了先进SPS的四项关键技术,简要介绍了SPS的应用拓展并对SPS的发展趋势进行了展望。指出了未来先进SPS的四大主要技术特点:多电化架构、高功能集成度、能量综合、优化利用能力以及与主发动机的协同增效。

关键词：第二动力系统辅助动力装置多电技术起动/发电技术热管理技术

Role of Cluster Geometry in Evolution of Electronic Structures of Small Aluminum Clusters

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Chinese Physics Letters 1997年第12期14卷 897-900页

作者： ZHAI Hua-jin ZHAO Ji-jun NI Guo-quan zhou Ru-fang WANG Guang-hou WANG Yu-zhu Laboratory for Quantum Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800 Department of Physics and National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093

The electronic structures of small aluminum clusters,Al_(n)(n=5-24),are investigated by a localized-orbital theory based on the tight-binding ***-numbered clusters each exhibit a HOMO-LUMO gap maximum,and simultaneously an s-p gap minimum,but not necessarily an ionization potential maximum,where HOMO-LUMO gap denotes the energy gap between the highest occupied orbital and the lowest unoccupied orbital of the *** revealed is an irregular odd-even alternation in HOMO-LUMO gaps for Al_(n)(n=7-24).Cluster geometry either contributes to or dominates these findings.

关键词： cluster orbital occupied

一种基于Clothoid曲线的无人机路径规划算法

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西北工业大学学报 2012年第6期30卷 874-878页

作者：王怿祝小平周洲西北工业大学无人机特种技术重点实验室陕西西安710065 西北工业大学无人机研究所陕西西安710065

提出了一种新的基于Clothoid曲线的无人机复合路径规划算法。该算法考虑了无人机在起点和目标点的方向以及无人机转弯半径的约束,能够在任意起止点位置和方向下得到更短的曲率连续的便于无人机飞行控制跟踪实现的Clothoid复合路径。与... 详细信息

提出了一种新的基于Clothoid曲线的无人机复合路径规划算法。该算法考虑了无人机在起点和目标点的方向以及无人机转弯半径的约束,能够在任意起止点位置和方向下得到更短的曲率连续的便于无人机飞行控制跟踪实现的Clothoid复合路径。与现有的基于微分几何的迭代算法相比,该算法迭代简单在给定范围内选择迭代初值,可以得到惟一解。

关键词：路径规划 Clothoid曲线复合路径 Dubins路径微分几何

Simultaneous silencing of Two Target Genes Using Virus-Induced Gene Silencing Technology

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Simultaneous silencing of Two Target Genes Using Virus-Induc...

Ultrahigh strength and improved electrical conductivity in an aging strengthened copper alloy processed by combination of equal channel angular pressing and thermomechanical treatment

中国植物病理学会2016年学术年会

作者： zhu Feng zhou Yang-kai College of Horticulture and Plant Protection Yangzhou University

Virus-induced gene silencing（VIGS） is an effective strategy for rapid gene function analysis during plant growth and *** the last decade,VIGS has been successfully used to knock down the expression of a single gene in various plant ***,simultaneous silencing of two target genes using VIGS in plants has been rarely *** is well established that the NAC（NAM,ATAF,and CUC） transcription factor and salicylic acid（SA） signal transduction pathway play essential roles in response to biotic ***,in this report,we performed VIGS to silence simultaneously the salicylic acid-binding protein 2（NbSABP2） and NbNAC1 in Nicotiana benthamiana to investigate the gene silencing efficiency of simultaneous silencing of two *** extension PCR analysis showed that the combination of NbSABP2 and NbNAC1 was successfully *** liquid PCR confirmed that the combination of NbSABP2 and NbNAC1 was successfully inserted into the TRV *** real-time PCR results showed that the expression of NbSABP2 and NbNAC1 were significantly reduced in 12 days post silenced plants after TRV infiltration compared with the control（TRV:00） ***,our results suggest that VIGS can be used to silence simultaneously two target genes only one time infiltration.

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Journal of Central South University 2024年第6期31卷 1823-1837页

作者： WANG Xu LI zhou MENG Xiang-peng XIAO zhu School of Materials Science and Engineering Central South UniversityChangsha 410083China Ningbo Boway Alloy Material Co. Ltd.Ningbo 315135China Key Laboratory of Non-ferrous Metal Materials Science and Engineering(Ministry of Education) Changsha 410083China

In this paper,equal channel angular pressing and thermomechanical treatment was employed to improve the strength and electrical conductivity of an aging strengthened Cu-Ti-Cr-Mg alloy,and the microstructure and properties of the alloy were investigated in *** results showed that the samples deformed by the combination of cryogenic equal channel angular pressing(ECAP)and rolling had good comprehensive properties after aging at 400℃.The tensile strength of the peak-aged and over-aged samples was 1120 MPa and 940 MPa,with their corresponding electrical conductivity of 14.7%IACS and 22.1%IACS,*** and cryogenic rolling introduced high density dislocations,leading to the inhibition of the softening effects and refinement of the *** a long time aging at 400℃,the alloy exhibited ultra-high strength with obvious increasing electrical *** high strength was attributed to the synergistic effect of work hardening,grain refinement strengthening and precipitation *** precipitation of a large amount of Ti atoms from the matrix led to the high electrical conductivity of the over-aged sample.

关键词： Cu-Ti alloy equal channel angular pressing rolling aging treatment high strength

Bile acids and their receptors: Potential therapeutic targets in inflammatory bowel disease

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World Journal of Gastroenterology 2023年第27期29卷 4252-4270页

作者： Xiong-Quan Long Ming-zhu Liu Zi-Hao Liu Lv-zhou Xia Shi-Peng Lu Xiao-Ping Xu Ming-Hao Wu Department of Gastroenterology The First Affiliated Hospital of Hunan Normal University(Hunan Provincial People's Hospital)Changsha 410005Hunan ProvinceChina

Chronic and recurrent inflammatory disorders of the gastrointestinal tract caused by a complex interplay between genetics and intestinal dysbiosis are called inflammatory bowel *** a result of the interaction between the liver and the gut microbiota,bile acids are an atypical class of steroids produced in mammals and traditionally known for their function in food *** the development of genomics and metabolomics,more and more data suggest that the pathophysiological mechanisms of inflammatory bowel disease are regulated by bile acids and their *** acids operate as signalling molecules by activating a variety of bile acid receptors that impact intestinal flora,epithelial barrier function,and intestinal *** bowel disease can be treated in new ways by using these potential *** paper mainly discusses the increasing function of bile acids and their receptors in inflammatory bowel disease and their prospective therapeutic *** addition,we explore bile acid metabolism and the interaction of bile acids and the gut microbiota.

关键词： Bile acids Inflammatory bowel disease Intestinal immunology Bile acid receptors Bile acid metabolism Gut microbiota

Species diversity,taxonomy and phylogeny of Polyporaceae(Basidiomycota)in China

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Fungal Diversity 2019年第4期97卷 137-392页

作者： Bao-Kai Cui Hai-Jiao Li Xing Ji Jun-Liang zhou Jie Song Jing Si zhu-Liang Yang Yu-Cheng Dai Institute of Microbiology Beijing Forestry UniversityBeijing 100083China Beijing advanced Innovation Center for Tree Breeding by Molecular Design Beijing Forestry UniversityBeijing 100083China National Institute of Occupational Health and Poison Control Chinese Center for Disease Control and PreventionBeijing 100050China Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesHeilongtanKunming 650201China

Polyporaceae is one of the most important families of *** on the species diversity,taxonomy and phylogeny of Polyporaceae in China are carried *** far 217 species belonging to 42 genera are reported from *** new genera:Amylosporia *** Murinicarpus ***.,twelve new species:Coriolopsis dendriformis ***.,*** ***.,Funalia cystidiata ***.,Haploporus microsporus ***.,Perenniporia citrinoalba ***.,*** ***.,Picipes hainanensis ***.,*** ***.,*** ***.,Trametes duplexa ***.,*** *** *** ***.,and six new combinations,Amylosporia hattorii ***.,Hornodermoporus latissimus ***.,Murinicarpus subadustus ***.,Picipes pumilus ***.,Vanderbylia delavayi *** Vanderbylia robiniophila ***.,are *** the species are described based on the Chinese *** to genera of Polyporaceae occurring in China and keys to species of each genus are *** monograph provides a revised classification of Polyporaceae in China according to the modern *** phylogeny of Polyporaceae from China are reconstructed based on DNA sequences of multiple loci including the internal transcribed spacer(ITS)regions,the large subunit nuclear ribosomal RNA gene(nLSU),the small subunit nuclear ribosomal RNA gene(nSSU),the small subunit mitochondrial rRNA gene sequences(mtSSU),the translation elongation factor 1-αgene(TEF1),theβ-tubulin gene(TBB1),the RNA polymerase II largest subunit(RPB1)and second largest subunit(RPB2)*** addition,full morphological descriptions,illustrations,color photographs,taxonomic notes,ecology and all the available sequences of Polyporaceae species found from China are provided.

关键词： Classification Multi-gene phylogeny Polypore Systematics White-rot fungi

Pediatric case of colonic perivascular epithelioid cell tumor complicated with intussusception and anal incarceration:A case report

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World Journal of Gastrointestinal Oncology 2022年第7期14卷 1348-1355页

作者： Luan Kou Wen-Wen Zheng Li Jia Xiao-Li Wang Ji-Hai zhou Jiao-Rong Hao zhu Liu Feng-Yu Gao Department of Gastroenterology Shandong Provincial Maternal and Child Health Care HospitalJinan 250014Shandong ProvinceChina

BACKGROUND Perivascular epithelioid cell tumor(PEComa)represents a group of rare mesenchymal *** can occur in many organs but is rare in the colorectum,especially in ***,PEComa is a rare cause of intussusception,the telescoping of a segment of the gastrointestinal tract into an adjacent *** describe a rare case of pediatric PEComa complicated with intussusception and anal incarceration,and conduct a review of the current *** SUMMARY A 12-year-old girl presented with abdominal pain and abdominal ultrasound suggested *** direct-vision intussusception treatment and colonoscopy was performed.A spherical tumor was discovered in the transverse colon and removed by *** pathologic analyses revealed that the tumor volume was 5.0 cm×4.5 cm×3.0 cm and the tumor tissue was located in the submucosa of the colon,arranged in an alveolar *** cell morphology was regular,no neoplastic necrosis was observed,and nuclear fission was *** immunohistochemical staining results were as follows:Human melanoma black 45(HMB 45)(+),cluster of differentiation 31(CD31)(+),cytokeratin(-),melanoma-associated antigen recognized by T cells(-),smooth muscle actin(-),molleya(-),desmin(-),S-100(-),CD117(-),and Ki67(positive rate in hot spot<5%).Combined with the results of pathology and immunohistochemistry,we diagnosed the tumor as *** recovery was good at the 4 mo *** The diagnosis of PEComa mainly depends on pathology and *** resection is the preferred treatment method.

关键词： Perivascular epithelioid cell tumor Colonic Intussusception Anal incarceration Endoscopic direct-vision intussusception treatment Case report

Intratracheal administration of umbilical cord-derived mesenchymal stem cells attenuates hyperoxia-induced multi-organ injury via heme oxygenase-1 and JAK/STAT pathways

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World Journal of Stem Cells 2022年第7期14卷 556-576页

作者： Na Dong Pan-Pan zhou Dong Li Hua-Su zhu Ling-Hong Liu Hui-Xian Ma Qing Shi Xiu-Li Ju Department of Pediatrics Qilu HospitalCheeloo College of MedicineShandong UniversityJinan 250012Shandong ProvinceChina Department of Pediatrics Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina Stem Cell and Regenerative Medicine Research Center Qilu Hospital of Shandong UniversityJinan 250012Shandong ProvinceChina

BACKGROUND Bronchopulmonary dysplasia(BPD)is not merely a chronic lung disease,but a systemic condition with multiple organs implications predominantly associated with hyperoxia *** advances in current management strategies,limited progress has been made in reducing the BPD-related systemic ***,although the protective effects of human umbilical cord-derived mesenchymal stem cells(hUC-MSCs)or their exosomes on hyperoxia-induced lung injury have been explored by many researchers,the underlying mechanism has not been addressed in detail,and few studies have focused on the therapeutic effect on systemic multiple organ *** To investigate whether hUC-MSC intratracheal administration could attenuate hyperoxia-induced lung,heart,and kidney injuries and the underlying regulatory *** Neonatal rats were exposed to hyperoxia(80%O_(2)),treated with hUC-MSCs intratracheal(iT)or intraperitoneal(iP)on postnatal day 7,and harvested on postnatal day *** tissue sections of the lung,heart,and kidney were analyzed *** contents of the bronchoalveolar lavage fluid(BALF),myeloper oxidase(MPO)expression,and malondialdehyde(MDA)levels were *** inflammatory cytokines were measured via enzyme-linked immunosorbent assay.A comparative transcriptomic analysis of differentially expressed genes(DEGs)in lung tissue was conducted via ***,we performed reverse transcription-quantitative polymerase chain reaction and western blot analysis to explore the expression of target mRNA and proteins related to inflammatory and oxidative *** iT hUC-MSCs administration improved pulmonary alveolarization and angiogenesis(P<0.01,P<0.01,P<0.001,and P<0.05 for mean linear intercept,septal counts,vascular medial thickness index,and microvessel density respectively).Meanwhile,treatment with hUC-MSCs iT ameliorated right ventricular hypertrophy(for Fulton’s index,P<0.01),and relieved reduced nephr

关键词： Mesenchymal stem cell Hyperoxia Multiple organ injury Bronchopulmonary dysplasia Heme oxygenase-1 JAK/STAT pathway