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基于数值模拟的轴对称矢量喷管内流特性研究

航空动力学报 2008年第5期23卷 822-829页

作者：邵万仁北京航空航天大学能源与动力工程学院

采用三维有粘定常程序计算了轴对称矢量喷管的内流特性,研究了尺寸缩比、冷热态的影响,并与冷态缩比模型矢量特性试验结果进行了对比;给出了设计工况的内流特性,讨论了几何矢量角、喷管落压比对内流特性的影响.研究结果表明,尺寸缩比、... 详细信息

采用三维有粘定常程序计算了轴对称矢量喷管的内流特性,研究了尺寸缩比、冷热态的影响,并与冷态缩比模型矢量特性试验结果进行了对比;给出了设计工况的内流特性,讨论了几何矢量角、喷管落压比对内流特性的影响.研究结果表明,尺寸缩比、冷热态对内流特性的影响均很小,冷态缩比模型试验结果可以真实地反映设计工况的内流特性,轴对称矢量喷管在设计工况下具有良好的内流特性,并且几何矢量角、喷管落压比对内流特性均有影响.

关键词：航空、航天推进系统轴对称矢量喷管内流特性数值模拟

Long-term outcome of infliximab combined with surgery for perianal fistulizing Crohn's disease

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World Journal of Gastroenterology 2015年第8期21卷 2475-2482页

作者： Bo-Lin Yang Yu-Gen Chen Yun-Fei Gu Hong-Jin Chen Gui-Dong Sun Ping Zhu wan-Jin shao Department of Colorectal Surgery the Affiliated Hospital of Nanjing University of Chinese Medicine

AIM:To evaluate the efficacy and long-term outcome of infliximab combined with surgery to treat perianal fistulizing Crohn’s disease(CD).METHODS:The work was performed as a prospective *** patients received infliximab combined withsurgery to treat perianal fistulizing CD,which was followed by an immunosuppressive agent as maintenance ***:A total of 28 patients with perianal fistulizing CD were *** week 30,89.3%(25/28)of the patients were clinically cured with an average healing time of 31.4 *** CD activity index decreased to70.07±77.54 from 205.47±111.13(P<0.01)after infliximab *** perianal CD activity index was decreased to 0.93±2.08 from 8.54±4.89(P<0.01).C-reactive protein,erythrocyte sedimentation rate,platelets,and neutrophils all decreased significantly compared with the pretreatment levels(P<0.01).Magnetic resonance imaging results for 16 patients after therapy showed that one patient had a persistent presacral-rectal fistula and another still had a cavity without clinical symptoms at *** a median follow-up of 26.4 mo(range:14-41 mo),96.4%(27/28)of the patients had a clinical ***:Infliximab combined with surgery is effective and safe in the treatment of perianal fistulizing CD,and this treatment was associated with better longterm outcomes.

关键词： Infliximab Surgery Crohn’s disease Anal fistula

Large cystic-solid pulmonary hamartoma:A case report

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World Journal of Clinical Cases 2022年第8期10卷 2650-2656页

作者： Xiao-wan Guo Xu-Dong Jia A-Dan Ji Dan-Qing Zhang De-Zhao Jia Qi Zhang Qiu shao Yang Liu Department of Radiology Hebei General HospitalShijiazhuang 050000Hebei ProvinceChina Departments of Urology The Second Hospital of Hebei Medical UniversityShijiazhuang 050005Hebei ProvinceChina Department of Medical Record Statistics Hebei General HospitalShijiazhuang 050000Hebei ProvinceChina Department of Pathology Hebei General HospitalShijiazhuang 050000Hebei ProvinceChina

BACKGROUND It now seems that all pulmonary hamartomas(PHs)are large cystic-solid lesions that are difficult to ***,few cases of large cystic-solid PHs have been *** present case report presents a large cystic-solid PH and provides a literature review of the imaging features,formation mechanism and histopathological basis of *** SUMMARY A 53-year-old woman with no clinical symptoms underwent a chest computed tomography(CT)examination at our *** CT images revealed a large,flat tumor with multiple air-containing cysts in the left thoracic cavity and a cystic part confined to the medial side of the tumor;the solid part of the tumor showed abundant fat and lamellar soft tissue *** small blood vessels were detected in the solid part of the tumor on contrast-enhanced CT *** the large size of the lesion,the patient elected to undergo *** examination revealed PH.A detailed review of the patient’s CT imaging showed that the lesion had a small vascular pedicle to the left lower lobe,which was a clue to its lung tissue histological *** to immunohistochemical staining,the confined multiple air-containing cysts were caused by the entrapment of respiratory/alveolar *** This case shows the imaging manifestations of a large *** awareness of its formation mechanism and histopathological basis may alert radiologists to consider this diagnosis in their daily workflow.

关键词： Lung Lung benign lesion Hamartoma Computed tomography Case report

P-doped all-small-molecule organic solar cells with power conversion efficiency of 17.73%

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Science China Chemistry 2023年第8期66卷 2371-2379页

作者： wanying Feng Kangqiao Ma Guangkun Song Tianyin shao Huazhe Liang Shudi Lu Yu Chen Guankui Long Chenxi Li Xiangjian wan Zhaoyang Yao Bin Kan Yongsheng Chen State Key Laboratory and Institute of Element-Organic Chemistry The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin300071China School of Materials Science and Engineering National Institute for Advanced MaterialsNankai UniversityTianjin300350China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing100043China State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou510640China

All-small organic solar cells(ASM OSCs)inherit the advantages of the distinct merits of small molecules,such as well-defined structures and less batch-to-batch *** comparison with the rapid development of polymer-based OSCs,more efforts are needed to devote to improving the performance of ASM OSCs to close the performance gap between ASM and polymer-based ***,a well-known p-dopant named fluoro-7,7,8,8-tetracyano-p-quinodimethane(FTCNQ)was introduced to a highefficiency system of HD-1:BTP-e C9,and a high power conversion efficiency(PCE)of 17.15%was achieved due to the improved electrical properties as well as better morphology of the active layer,supported by the observed higher fill factor(FF)of 79.45%and suppressed non-radiative recombination ***,combining with the further morphology optimization from solvent additive of 1-iodonaphthalene(IN)in the blend film,the HD-1:BTP-e C9-based device with the synergistic effects of both FTCNQ and IN demonstrates a remarkable PCE of 17.73%(certified as 17.49%),representing the best result of binary ASM OSCs to date.

关键词： organic solar cells all-small-molecule power conversion efficiency p-dopant

Asymmetrical traumatic bilateral hip dislocations with hemodynamic instability and an unstable pelvic ring: Case report and review of literature

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World Journal of Clinical Cases 2018年第5期6卷 94-98页

作者： Kai Huang Grey Giddins Jian-Fang Zhang Jian-Wei Lu Jun-Ming wan Peng-Li Zhang shao-Yu Zhu Department of Orthopedics Tongde Hospital of Zhejiang Province Department of Orthopedics Royal United Hospital Bath

Simultaneous anterior and posterior traumatic dislocations of both hips are very rare. Only 33 cases have been previously reported in the English language literature. Although they were all due to high-energy injuries, they were hemodynamically stable and had a stable pelvic ring. We report a unique case of asymmetrical hip dislocations with an unstable pelvic ring and hemodynamic instability. A 40-year-old man was injured in a high-energy motor vehicle accident. He was hemodynamically unstable when he presented in the emergency department. Radiolographs showed asymmetrical dislocations of both hips with an unstable pelvic ring. Under general anesthesia, he had closed reduction of the dislocations of both hips, followed by temporary stabilization with an external fixator. Transcatheter arterial embolization was performed to stop active pelvic bleeding. Delayed open reduction and internal fixation was performed 12 d later with anterior and posterior plates. The patient recovered well with an uneventful post-operative course. Asymmetrical bilateral hip dislocations with pelvic ring instability caused by trauma, as presented in this case, is very rare and potentially life threatening. Prompt treatment can give a good outcome.

关键词： Asymmetrical bilateral hip dislocations Unstable pelvic ring Hemodynamic instability

Reducing maize yield gap by matching plant density and solar radiation

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Journal of Integrative Agriculture 2021年第2期20卷 363-370页

作者： LIU Guang-zhou LIU wan-mao HOU Peng MING Bo YANG Yun-shan GUO Xiao-xia XIE Ruizhi wanG Ke-ru LI shao-kun Key Laboratory of Crop Physiology and Ecology Ministry of Agriculture and Rural Affairs/lnstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081P.R.China The Key Laboratory of Oasis Eco-agriculture Xinjiang Production and Construction Corps/College of AgronomyShihezi UniverisyShihezi 832000P.R.China

Yield gap exists because the current attained actual grain yield cannot yet achieve the estimated yield potential. Chinese high yield maize belt has a wide span from east to west which results in different solar radiations between different regions and thus different grain yields. We used multi-site experimental data, surveyed farmer yield data, the highest recorded yield data in the literatures, and simulations with Hybrid-Maize Model to assess the yield gap and tried to reduce the yield gap by matching the solar radiation and plant density. The maize belt was divided into five regions from east to west according to distribution of accumulated solar radiation. The results showed that there were more than 5.8 Mg ha^(–1) yield gaps between surveyed farmer yield and the yield potential in different regions of China from east to west, which just achieved less than 65% of the yield potential. By analyzing the multi-site density experimental data, we found that the accumulated solar radiation was significantly correlated to optimum plant density which is the density with the highest yield in the multi-site density experiment(y=0.09895 x–32.49, P<0.01), according to which the optimum plant densities in different regions from east to west were calculated. It showed that the optimum plant density could be increased by 60.0, 55.2, 47.3, 84.8, and 59.6% compared to the actual density, the grain yield could be increased by 20.2, 18.3, 10.9, 18.1, and 15.3% through increasing plant density, which could reduce the yield gaps of 33.7, 23.0, 13.4, 17.3, and 10.4% in R(region)-1, R-2, R-3, R-4, and R-5, respectively. This study indicates that matching maize plant density and solar radiation is an effective approach to reduce yield gaps in different regions of China.

关键词： maize yield gap yield potential matching density and radiation

Diagnosis of coronary artery disease using targeted post-mortem computed tomography coronary angiography:a case report

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Forensic Sciences Research 2017年第2期2卷 107-111页

作者： Lei wan Yu shao Donghua Zou Ping Huang Zhengdong Li Maowen wang Yijiu Chen Shanghai Key Laboratory of Forensic Science Shanghai Forensic Service PlatformDepartment of Forensic PathologyInstitute of Forensic ScienceMinistry of JusticeShanghaiChina

Targeted post-mortem computed tomography(PMCT)combined with coronary angiography has the potential to play a significant role in the investigation of sudden cardiac *** authors utilized a targeted PMCT coronary angiography in a case involving a 53-year-old man who died from acute myocardial ischemia and cardiac decompensation which may result from coronary artery disease(CAD).The victim collapsed suddenly at work and died soon after arrival to *** body was examined using PMCT and targeted PMCT coronary *** left anterior descending coronary artery exhibited 75%-100%stenosis in the middle segment;however,the distal segment could not be clearly *** addition,the left circumflex and right coronary artery exhibited calcification,atherosclerosis and an area of 50% *** of cardiogenic pulmonary oedema were also *** imaging results suggested that this individual had coronary atherosclerosis and probably died from *** autopsy and histological examination revealed acute myocardial ischemia and myocardial scarring,confirming the cause of death while excluding other *** summary,targeted post-mortem computed tomography angiography(PMCTA)can visualize the arteries and estimate the degree of principal pathological *** method is a simple,reliable and sensitive technique for identifying the presence of coronary *** is a valuable post-mortem forensic imaging method and should be recommended in the investigation of suspicious cardiac deaths.

关键词： Forensic science forensic pathology post-mortem forensic imaging PMCT PMCTA targeted coronary angiography coronary atherosclerosis

Design and Fabrication of a Monolithic Optoelectronic Integrated Circuit Chip Based on CMOS Compatible Technology

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Chinese Physics Letters 2012年第4期29卷 100-103页

作者： GUO Wei-Feng ZHAO Yong wanG wan-Jun shao Hai-Feng YANG Jian-Yi JIANG Xiao-Qing Department of Information Science and Electronics Engineering Zhejiang UniversityHangzhou 310027

A monolithic optoelectronic integrated circuit chip on a silicon-on-insulator is designed and fabricated based on complementary metal oxide semiconductor compatible *** chip integrates an optical Mach-Zehnder modulator (MZM) and a CMOS driving circuit with the amplification *** results show that the extinction ratio of the MZM is close to 20dB and the small-signal gain of the CMOS driving circuit is about 26.9dB.A 50m V 10 MHz sine wave signal is amplified by the driving circuit,and then drives the MZM successfully.

关键词： function modulator optoelectronic

Strain heterogeneity,cooccurrence network,taxonomic composition and functional profile of the healthy ocular surface microbiome

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Eye and Vision 2021年第1期8卷 47-58页

作者： Yutong Kang Shudan Lin Xueli Ma Yanlin Che Yiju Chen Tian wan Die Zhang Jiao shao Jie Xu Yi Xu Yongliang Lou Meiqin Zheng Eye Hospital and School of Ophthalmology and Optometry Wenzhou Medical UniversityWenzhouZhejiangChina National Clinical Research Center for Ocular Diseases WenzhouZhejiangChina Wenzhou Key Laboratory of Sanitary Microbiology Key Laboratory of Laboratory MedicineMinistry of EducationSchool of Laboratory Medicine and Life SciencesWenzhou Medical UniversityWenzhouZhejiang 325035China

Background:There is growing evidence indicating that the microbial communities that dwell on the human ocular surface are crucially important for ocular surface health and *** is known about interspecies interactions,functional profiles,and strain heterogeneity across individuals in healthy ocular surface ***:To comprehensively characterize the strain heterogeneity,cooccurrence network,taxonomic composition and functional profile of the healthy ocular surface microbiome,we performed shotgun metagenomics sequencing on ocular surface mucosal membrane swabs of 17 healthy ***:The healthy ocular surface microbiome was classified into 12 phyla,70 genera,and 140 *** number of species in each healthy ocular surface microbiome ranged from 6 to 47,indicating differences in microbial diversity among *** species with high relative abundances and high positivity rates were Streptococcus pyogenes,Staphylococcus epidermidis,Propionibacterium acnes,Corynebacterium accolens,and Enhydrobacter aerosaccus.A correlation network analysis revealed a competitive interaction of Staphylococcus epidermidis with Streptococcus pyogenes in ocular surface microbial *** epidermidis and Streptococcus pyogenes revealed phylogenetic diversity among different *** the functional level,the pathways related to transcription were the most *** also found that there were abundant lipid and amino acid metabolism pathways in the healthy ocular surface ***:This study explored the strain heterogeneity,cooccurrence network,taxonomic composition,and functional profile of the healthy ocular surface *** findings have important significance for the future development of probiotic-based eye therapeutic drugs.

关键词： Healthy ocular surface microbiome Cooccurrence network Functional composition Strain level