检索结果-南通市图书馆

Toxic activity of a protein complex purified from Xenorhabdus nematophila HB310 to Plutella xylostella larvae

在线全文

学校读者我要写书评

暂无评论

Insect Science 2012年第3期19卷 329-336页

作者： qin-ying wang Zi-Yan Nangong Jun Yang Ping Song Yi wang Liwang Cui Long Cui College of Plant Protection Agricultural University of HebeiBaodingHebei ProvinceChina Department of Entomology Rutgers UniversityNew BrunswickN J Department of Entomology the Pennsylvania State UniversityUniversity ParkPAUSA

Xenorhabdus nematophila, a Gram-negative proteobacterium belonging to the family Enterobacteriaceae and associated symbiotically with soil entomopathogenic nematodes, Steinernema carpocapsae, is pathogenic to a wide range of insects. A protein complex with insecticidal activity was isolated from the cells ofX. nematophila HB310 strain using methods of salting out and native polyacrylamide gel electrophoresis （PAGE）. Seven polypeptides ranging 50~250 kDa were well separated from the protein complex （named Xnpt） by sodium dodecyl sulfate （SDS）-PAGE, five of which are identified as XptA2, xptC 1, XptB 1, GroEL and hypothetical protein by matrix-assisted laser desorption- time-of-flight mass spectrometry （MALDI-TOFMS）. Xnpt showed high oral virulence to larvae of diamondback moth （DBM）, Plutella xylostella L. （Lepidoptera, Plutellidae） as its median lethal concentration （LC50） against second and third instar larvae were 331.45 ng/mL and 553.59 ng/mL at 72 h, respectively. The histological analysis of Xnptfed DBM larvae showed extensive histopathological effects on the midgut. Biochemical analysis indicated that Xnpt markedly inhibited the activities of three important enzymes in the midgut. Overall, our data showed that the protein complex isolated from X. nematophila HB310 induced the antifeedant and death of insects by destroying midgut tissues and inhibiting midgut proteases activities.

关键词： insecticidal toxin midgut Plutella xylostella proteases Xenorhabdus nematophila

Laryngo-tracheobronchial Amyloidosis:a Case Report and Review of Literature

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Medical Sciences Journal 2014年第1期29卷 48-50页

作者： Jing-xia wang Shan Yang Hai-hong Chen qin-ying wang Yu-yu Lu Li-li Jiang Department of Head-neck Otolaryngology The First Affiliated HospitalCollege of MedicineZhejiang University

AMYLOIDOSIS is a benign process which can have systemic involvement. Though larynx is the common site of localized amyloidosis in the head and neck region,I it was seldom reported with heterochronous implication of bilateral ventricles. Here we report a case of laryngeal amyloidosis heterochronously localized at bilateral ventricles with tracheobronchial involvement. Combined with our experience we reviewed the literature, and discuss the pertinent managements of this condition.

关键词： larynx tracheobronchus amyloidosis

Transnasal endoscopic repair of acquired posterior choanal stenosis and atresia

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2008年第12期121卷 1101-1104页

作者： wang qin-ying wang Shen-qing LIN Shan CHEN Hai-hong LU Yu-yu Department of Otolaryngology First Affiliated Hospital College of Medicine Zhejiang University Hangzhou Zhejiang 310003 China

Background There are congenital and acquired choanal atresias and many approaches have been used for their repair. We assessed the clinical effect of power instrument, endoscopic repair of acquired choanal stenosis and atresia. Methods Nineteen patients, aged from 32 to 61 years, with acquired choanal stenosis and atresia （from trauma in 5 cases and from radiotherapy after nasopharyngeal carcinoma in 14; 6 bilateral and 13 unilateral cases）, underwent transnasal endoscopic repair of choanal stenosis and atresia. No patient had stenting. Antibiotic and local glucocorticoid were administered postoperatively.Results Eighteen patients remained free of symptoms for 12-40 months after the surgery, and the diameter of the neochoana was more than 1 cm after the procedure. One patient required revision surgery and recovered completely with no restenosis at 12 months after the second surgery. There were no postoperative complications. Histology of the resected tissue revealed respiratory epithelial-lined stromal tissue with chronic inflammation, edema and fibrosis, but no tumor cells.Conclusions Transnasal endoscopic approach is a useful procedure for the repair of acquired choanal stenosis and atresia： it is highly successful, safe and effective with swift recovery and short time of hospitalization. It is very important in postoperative care to remove any granulation or polyps at the site of the neochoana at that time.

关键词： choanal atresia endoscope surgery

Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng wang Zhou ying Mo Biao Zheng Miaomiao Han qin Zhong Wenwen Yang Peng Gao Lezhi Yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

Palatine tonsillar metastasis of small cell neuroendocrine carcinoma from lung detected by FDG-PET/CT

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Palatine tonsillar metastasis of small cell neuroendocrine c...

Palatine tonsillar metastasis of small cell neuroendocrine carcinoma from lung detected by FDG-PET/CT

全国耳鼻咽喉头颈外科中青年学术会议

作者： Shui-Hong Zhou qin-ying wang Kui Zhao The First Affiliated Hospital College of MedicineZhejiang University

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Palatine tonsillar metastasis of small cell neuroendocrine c...

安徽枞阳出土西周至战国时期青铜器的矿料来源研究

2012年浙江省耳鼻咽喉科学学术年会

作者： Shui-Hong Zhou qin-ying wang Kui Zhao 浙江大学医学院附属第一医院耳鼻咽喉科

A 67-year-old female received right tonsillectomy due to enlargement of right tonsil with symptoms of sore *** postoperative pathological results showed that right tonsillar small cell neuroendocrine carcinoma (SCNC).FDG Positron emission tomography(PET)/computed tomography(CT) demonstrated that there was metabolically active in lower lobe of right *** addition,foci of hypermetabolism were noted in the lymph node of right neck and mediastium.A needle biopsy of pulmonary mass demonstrated *** patient received chemotherapy and died of multiple distant metastases after 6 *** is the first report of PET/CT evaluating tonsillar metastasis from lung SCNC.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

光谱学与光谱分析 2017年第11期37卷 3610-3615页

作者：魏国锋秦颍王乐群安徽大学历史系安徽合肥230039 中国科学技术大学科技史与科技考古系安徽合肥230026 枞阳县文物管理所安徽枞阳246700

采用激光剥蚀电感耦合等离子体质谱(LA-ICP-MS),对枞阳境内出土西周至战国时期青铜器和汤家墩遗址出土炼渣中的铜颗粒进行微量元素原位无损分析,以探讨枞阳县境内出土青铜器的铜矿来源。结果表明,枞阳汤家墩遗址冶炼铜金属颗粒中的Co,As... 详细信息

采用激光剥蚀电感耦合等离子体质谱(LA-ICP-MS),对枞阳境内出土西周至战国时期青铜器和汤家墩遗址出土炼渣中的铜颗粒进行微量元素原位无损分析,以探讨枞阳县境内出土青铜器的铜矿来源。结果表明,枞阳汤家墩遗址冶炼铜金属颗粒中的Co,As,Sb,Ag和Bi等元素含量较高,其微量元素特征不同于铜陵和铜绿山的冶炼金属铜;从西周至战国时期,枞阳青铜器所用铜矿来源比较稳定,主要来自汤家墩遗址周边的枞阳县境内,有少量器物的铜矿可能来自长江以南的铜陵地区;LA-ICP-MS可用于青铜器和古铜矿冶遗址炼渣中所夹杂铜颗粒的微量元素原位无损分析,从而为利用炼渣探讨古矿冶遗址冶炼金属产品的微量元素特征奠定了基础,对探讨三代青铜器的矿料来源研究具有重要的应用价值。

关键词：枞阳青铜器矿料来源激光剥蚀电感耦合等离子体质谱

Microstructure and mechanical properties of interface between laser cladded Hastelloy coating and steel substrate

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2017年第3期27卷 733-740页

作者： qin-ying wang Yu-chen XI Xiao-yu LIU Shuang LIU Shu-lin BAI Zong-de LIU School of Materials Science and Engineering Southwest Petroleum University Chengdu 610500 China Department of Materials Science and Engineering College of Engineering Peking University Beijing 100871 China Key Laboratory of Condition Monitoring and Control for Power Plant Equipment Ministry of Education North China Electric Power University Beijing 102206 China

In order to improve the corrosion resistance of carbon steel,Hastelloy coatings were prepared on E235steel substrate by ahigh power diode laser with laser scanning speeds of6and12mm/s,*** interface between the coating and substratewas firstly exposed by dissolving off the *** microstructure,composition and mechanical properties were ***“edges”along the grain boundary were found at coating/substrate ***“edges”consisted of intergranularcorrosion area and real grain *** interface of coating mainly displayed austenite structure ascribed to the rapidsolidification as well as the dilution of Ni during ***,Hastelloy coating and its interface prepared at the speedof12mm/s showed higher hardness than that prepared at the speed of6mm/*** boundaries had higher friction coefficient thangrains at both coating/substrate ***,the interface at higher laser scanning speed exhibited smaller grains,lowerdilution rates of Ni and Fe as well as a better tribological property.

关键词： Hastelloy coating laser cladding interface microstructure nano-scratch

The gut-eye axis:from brain neurodegenerative diseases to age-related macular degeneration

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第10期20卷 2741-2757页

作者： Qianzi Jin Suyu wang Yujia Yao qin Jiang Keran Li Department of Ophthalmology The Affiliated Eye Hospital of Nanjing Medical UniversityNanjingJiangsu ProvinceChina The Fourth School of Clinical Medicine Nanjing Medical UniversityNanjingJiangsu ProvinceChina

Age-related macular degeneration is a serious neurodegenerative disease of the retina that significantly impacts ***,the specific pathogenesis remains unclear,and effective early treatment options are consequently *** microbiome is defined as a large ecosystem of microorganisms living within and coexisting with a *** intestinal microbiome undergoes dynamic changes owing to age,diet,genetics,and other *** dysregulation of the intestinal flora can disrupt the microecological balance,resulting in immunological and metabolic dysfunction in the host,and affecting the development of many *** recent decades,significant evidence has indicated that the intestinal flora also influences systems outside of the digestive tract,including the ***,several studies have demonstrated the critical role of the gut-brain axis in the development of brain neurodegenerative diseases,including Alzheimer’s disease and Parkinson’s ***,the role of the“gut-eye axis”has been confirmed to play a role in the pathogenesis of many ocular ***,age-related macular degeneration and many brain neurodegenerative diseases have been shown to share several risk factors and to exhibit comparable *** such,the intestinal flora may play an important role in age-related macular *** the above context,the present review aims to clarify the gut-brain and gut-eye connections,assess the effect of intestinal flora and metabolites on age-related macular degeneration,and identify potential diagnostic markers and therapeutic ***,direct research on the role of intestinal flora in age-related macular degeneration is still relatively limited,while studies focusing solely on intestinal flora are insufficient to fully elucidate its functional role in age-related macular ***-on-a-chip technology has shown promise in clarifying the gut-eye interactions,while integrating analysis of the inte

关键词： age-related macular degeneration biological agents blinding eye disease dietary nutrition fecal microbial transplantation gut-eye axis intestinal flora metabolite microecology neurodegenerative disease