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Chinese Chemical Letters 2008年第9期19卷 1035-1038页

作者： Qing han Li zhi gang Zhao College of Chemistry and Environmental Protection Engineering Southwest University for Nationalities Chengdu 610041 China

Six new N4-[bi-（4-fluorophenyl）-methyl]-piperazine thiosemicarbazones 3a-f have been prepared starting from [bi-（4-fluorophenyl）-methyl]-piperazine in solvent-free condition under microwave irradiation with excell... 详细信息

关键词： bi-(4-Fluorophenyl)-methyl]-piperazine Thiosemicarbazones Microwave irradiation Solvent-free Organic synthese

An integrated approach to modeling and adaptive control

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Frontiers of Electrical and Electronic Engineering in China 2006年第2期1卷 228-233页

作者： han zhi-gang Faculty of Electronic-Engineering Heilongjiang UniversityHarbin 150080China

In the book(Adaptive Identification,Prediction and Control-Multi Level Recursive Approach),the concept of dynamical linearization of nonlinear systems has been *** dynamical linearization is formal only,not a real *** the linearization procedure,we can find a new approach of system identification,which is on-line real-time modeling and real-time feedback control *** modeling and real-time feedback control have been integrated in the identification approach,with the parameter adaptation model being *** structure adaptation of control systems has been achieved,which avoids the complex modeling *** objective of this paper is to introduce the approach of integrated modeling and control.

关键词： Real time identification Feedback control Structure adaptive

A Neural Network Based Single Footprint Temperature Retrieval for Atmospheric Infrared Sounder Measurements and Its Application to Study on Stratospheric Gravity Wave

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Journal of Tropical Meteorology 2022年第1期28卷 82-94页

作者： YAO zhi-gang HONG Jun CUI Xing-dong ZHAO Zeng-liang han zhi-gang Beijing Institute of Applied Meteorology Beijing 100029 China LAGEO Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029 China PLA University of Science and Technology Nanjing 211101 China

Satellite hyperspectral infrared sounder measurements have better horizontal resolution than other sounding techniques as it boasts the stratospheric gravity wave(GW)*** accurately and efficiently derive the three-dimensional structure of the stratospheric GWs from the single-field-of-view(SFOV)Atmospheric Infra Red Sounder(AIRS)observations,this paper firstly focuses on the retrieval of the atmospheric temperature profiles in the altitude range of 20-60 km with an artificial neural network approach(ANN).The simulation experiments show that the retrieval bias is less than 0.5 K,and the root mean square error(RMSE)ranges from 1.8 to 4 ***,the retrieval results from 20 granules of the AIRS observations with the trained neural network(AIRS_SFOV)and the corresponding operational AIRS products(AIRS_L2)as well as the dual-regression results from the Cooperative Institute for Meteorological Satellite Studies(CIMSS)(AIRS_DR)are compared respectively with ECMWF T799 *** comparison indicates that the standard deviation of the ANN retrieval errors is significantly less than that of the AIRS_***,the analysis of the typical GW events induced by the mountain Andes and the typhoon"Soulik"using different data indicates that the AIRS_SFOV results capture more details of the stratospheric gravity waves in the perturbation amplitude and pattern than the operational AIRS products do.

关键词： stratosphere gravity wave temperature retrieval hyperspectral infrared sounder

Immediate Surgical Intervention for Penile Fracture: a Case Report and Literature Review

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Chinese Medical Sciences Journal 2011年第2期26卷 132-134页

作者： Jin Wen han-zhong Li zhi-gang Ji Hong-jun Li Department of Urology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

PENILE fracture is a critical urological emergency, which is caused by the rupture of the tunica albuginea of the corpus cavernosum following blunt trauma to the erect penis. Traumatic injuries of the penis often occur in the erected state.1 Due to the possible embarrassment, this condition has been under- reported. Typically, the patient reports a snap or cracking sound accompanied by sharp pain and rapid penile detu- mescence, followed by immediate development of swelling and angulation.2 The common causes include direct injuries, forceful masturbation, or vigorous sexual intercourse.3 Most injuries to the penis need immediate surgical treatment. Here we report a case of penile fracture caused by traumatic injury.

关键词： penile fracture surgical intervention

Diagnosis and Treatment of Primary Adult Renal Sarcoma

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Chinese Medical Sciences Journal 2011年第3期26卷 172-174页

作者： Zhong-ming Huang han-zhong Li zhi-gang Ji Bing-bing Shi Department of Urology Peking Union Medical College HospitalChinese Academy of Medical Sciences ＆ Peking Union Medical CollegeBeijing 100730China

Objective To investigate the clinical characteristics of primary adult renal *** A total of 1654 cases with adult renal tumors were treated during 1985 to 2009 in Peking Union Medical College *** all,17 cases were diagnosed as primary renal sarcoma and underwent radical *** clinical features of 17 such patients were retrospectively *** The first symptom of 10(59%) cases in all renal sarcomas was abdominal *** pathological diagnosis was leiomyosarcoma(7 cases),rhabdomyosarcoma(2 cases),malignant fibrous histiocytoma(2 cases),low-differentiated sarcoma(2 cases),chromophobe renal cell carcinoma coexisting with liposarcoma(1 case),fibrosarcoma(1 case),embryonic sarcoma(1 case) and leiomyosarcoma(1 case).One patient died of tumor thrombus of the inferior vena cava during ***,15 cases were regularly followed up for 4 to 60 *** now,1 had tumor-free survival for 9 months,and the other 14 cases died 2-38 months after the operation with a median survival time of 18(range,5-60) *** median survival time of leiomyosarcoma group was 28(range,11-60) months,and 2 cases of malignant fibrous histiocytoma died 4 and 8 months after the operation *** The primary renal sarcoma has the clinical symptom similar with advanced renal cell carcinoma and has poor *** might have relative good prognosis.

关键词： renal sarcoma adult pathology

A Case of Large “Silent” Extra-adrenal Retroperitoneal Paraganglioma Resected Laparoscopically

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Chinese Medical Sciences Journal 2010年第1期25卷 61-64页

作者： Jin Wen han-Zhong Li, zhi-gang Ji Quan-zhong Mao Bing-bing Shi Wei-gang Yan Department of Urology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

SILENT extra-adrenal retroperitoneal paragangliomas (PGLs) arise from dispersed paraganglias which tend to be symmetrically distributed in close relation to the aorta and sympatheticnervous system. They are rarely enc... 详细信息

关键词： extra-adrenal paraganglioma retroperitoneal tumor diagnosis treatment

An Improved Atmospheric Vector Radiative Transfer Model Incorporating Rough Ocean Boundaries

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Atmospheric and Oceanic Science Letters 2010年第3期3卷 139-144页

作者： Fan Xue-Hua Chen Hong-Bin han zhi-gang Lin Long-Fu Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Beijing Institute of Applied Meteorology Beijing 100029 China

The radiative transfer model (RT3), a vector radiative transfer (VRT) scheme in a plane-parallel atmosphere, was bounded by a rough ocean surface in this study. The boundary problem was solved using a Fourier series decomposition of the radiation field as a function of the azimuth. For the case of a rough ocean surface, the decomposition was obtained by developing both the Fresnel reflection matrix and the probability distribution of the water facet orientation as Fourier series. The effect of shadowing by ocean surface waves was also considered in the boundary condition. The VRT model can compute the intensity and degree of polarization of the light at the top of the atmosphere (TOA), the ocean surface, and any level of the atmosphere in the ocean-atmosphere system. The results obtained by our model are in good agreement with those computed by Ahmad’s model. The simulated results showed that the shadow effects of wave facets on the intensity and the degree of polarization are negligible except at the ocean surface near the grazing angle, possibly because we did not consider the effect of white caps.

关键词： vector radiative transfer rough ocean fresnel reflection matrix wave facet distribution function

乳腺癌患者MRI特征及与癌组织PR、ER、CerbB-2表达的关系研究

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中国CT和MRI杂志 2024年第7期22卷 105-107页

作者：马利芹刘丽韩志刚采丽陈龙舟扬州大学附属淮安市妇幼保健院放射科江苏淮安223002 新疆兵团第七师医院放射科新疆奎屯833299 扬州大学附属淮安市妇幼保健院病理科江苏淮安223002 扬州大学附属淮安市妇幼保健院乳腺科江苏淮安223002

目的探讨乳腺癌患者磁共振成像(MRI)特征及与癌组织孕激素受体(PR)、雌激素受体(ER)、原癌基因(CerbB-2)表达的关系。方法收集2021年5月~2023年5月在我院治疗的86例乳腺癌患者的临床资料,所有患者均于术前进行MRI检查,并于术后对病理学... 详细信息

目的探讨乳腺癌患者磁共振成像(MRI)特征及与癌组织孕激素受体(PR)、雌激素受体(ER)、原癌基因(CerbB-2)表达的关系。方法收集2021年5月~2023年5月在我院治疗的86例乳腺癌患者的临床资料,所有患者均于术前进行MRI检查,并于术后对病理学标本进行免疫组化染色检测,计算入组患者癌组织PR、ER、CerbB-2阳性率,比较不同临床特征乳腺癌患者癌组织中PR、ER及CerbB-2阳性表达情况,不同MRI特征乳腺癌患者癌组织中PR、ER及CerbB-2阳性表达情况,Spearman相关性分析癌组织中PR、ER及CerbB-2阳性表达与MRI特征的关系。结果入组86例乳腺癌患者中,PR、ER、CerbB-2阳性率分别为63例(73.26%)、51例(59.30%)和56例(65.12%)。PR、ER及CerbB-2阳性表达率在肿瘤分化程度、肿瘤大小和TNM分期上差异有统计学意义(P0.05)。PR、ER及CerbB-2阳性表达率在不同肿瘤边缘、强化方式和动态增强方式上差异有统计学意义(P0.05)。Spearman相关性分析显示,癌组织中PR、ER及CerbB-2阳性表达与强化方式、动态增强方式呈正相关(P<0.05)。结论癌组织PR、ER、CerbB-2阳性表达与乳腺癌疾病进展程度有关,临床可以通过MRI特征评估肿瘤进展,指导临床治疗。

关键词：乳腺癌核磁共振成像孕激素受体雌激素受体原癌基因

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Mixed Dead-time Effect Suppression Strategy for Modular Multilevel Converters

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1075-1084页

作者： zhi Geng Minxiao han School of Electrical and Electronic Engineering North China Electric Power UniversityBeijing 102206China IEEE

Dead time is necessary for the coupled power switches to prevent shoot-through,especially in the modular multilevel converters(MMCs)with a large number of power *** paper proposes a dead-time effect suppression strategy for MMCs with nearest level *** operational principles of MMCs are first *** to the operational features of MMCs,the method that removes a switching signal from the coupled switches and the reduced switching frequency voltage balancing algorithms(RSFVBAs)are mixed in the proposed *** the intervals that are furthest away from the zerocrossing points(ZCP)of arm currents,the single switching signal method can completely eliminate the dead-time effect(DTE).Alternatively,the DTE is suppressed by the RSFVBA in intervals that are close to the *** the combination of the two methods,the dependence of the DTE suppression method on currents is reduced and the influences of ZCP are also released without degrading the normal operation performance of ***,the output performance of MMCs is improved and the voltage stress on the arm inductor dramatically ***,the validation of the method is verified by the simulation results with the professional tool Matlab/Simulink.

关键词： Dead-time effect modular multilevel converters switching frequency voltage balancing algorithm

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AIRS观测的东亚夏季平流层重力波特征

地球物理学报 2015年第4期58卷 1121-1134页

作者：姚志刚赵增亮韩志刚北京应用气象研究所北京100029

对流性重力波对中层大气环境有显著影响.重力波活动及重力波源的地理和季节性变化等信息是理解和模拟重力波效应的基础.卫星高光谱红外大气垂直探测器AIRS的4 μm和15 μm波段可用于识别30~40 km高度范围和41 km高度附近的重力波,其11 ... 详细信息

对流性重力波对中层大气环境有显著影响.重力波活动及重力波源的地理和季节性变化等信息是理解和模拟重力波效应的基础.卫星高光谱红外大气垂直探测器AIRS的4 μm和15 μm波段可用于识别30~40 km高度范围和41 km高度附近的重力波,其11 μm通道可同步观测对流层深对流.观测个例表明,海面和陆面上空的平流层扰动影响范围均可达1000 km,不同高度的扰动强度分布也存在差异.基于2007年6月至8月的AIRS观测资料,分析了东亚区域的对流层深对流活动和平流层的重力波,得到了深对流和重力波发生频率的水平分布.统计结果表明,东亚区域夏季夜间的深对流活动明显少于白天,但AIRS观测到的平流层重力波发生频率和扰动强度均显著大于白天,揭示了夜间对流层深对流诱发的平流层重力波在强度、范围等方面可能与白天存在显著差异.进一步对比分析表明,AIRS观测的平流层扰动高值区与深对流高值区明显不同.平流层重力波与对流层深对流之间的相关分析表明,在36°N以南的区域,41 km高度上AIRS观测的重力波中,深对流云诱发的重力波的比例约为30%~100%.在10°N至36°N区间,90%的深对流均可诱发平流层重力波.分析得到的30~40 km高度区间和41 km高度附近的重力波水平分布对比表明,后一高度上的扰动强度明显大于前一高度,且前一高度在东南亚区域存在强扰动中心而在后一高度则没有.最后,给出了AIRS观测的几种典型形态的东亚区域平流层波动,表明了该区域平流层环境波动形态的复杂性和多样性.

关键词：东亚平流层重力波高光谱红外