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Hand-assisted laparoscopic surgery of abdominal large visceral organs

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World Journal of Gastroenterology 2006年第29期12卷 4736-4740页

作者： Li-Hua Dai Bo xu guang-hui Zhu Department of Surgery The First Hospital of Guangzhou Guangzhou 510180 Guangdong Province China

AIM： To design a hand-assisted laparoscopic approach in an attempt to provide an option for laparoscopic resection of abdominal large viscera. METHODS： A 5-6 cm incision （for HandPort） and 2 trocars were employed. The main vessel of the target organ was taken as a ＂core＂, and all tissues around the core were taken as peripheral structures. The peripheral structures were dissected first, and the core vessels were treated last. Twenty-six patients underwent laparoscopic deroofing of the hepatic huge cysts, resection of the segments lying at the outer edge of the liver （segments 2 to 6）, splenectomy, hemicolectomy, ileocecectomy and subtotal gastrectomy with HandPort device, harmonic scalpel, or Ligasure. RESULTS： The duration of the procedure was within 2 hours. Blood loss amounted to 8-120 mL. The conversion rate was 3.8% （1/26）. All patients had uneventful postoperative courses with less pain, earlier oral intake, and faster recovery, compared with conventional surgery. CONCLUSION： This method combines the advantages of both open and laparoscopic techniques, achieving better hemostasis effect, shortening the operative time, and is beneficial to the patients.

关键词： Minimally invasive surgery, Hand-assistedlaparoscopic surgery Hepatic segmentectomy,Hemicolectomy Subtotal gastrectomy

Panxianichthys imparilis gen. et sp. nov., a new ionoscopiform （Halecomorphi） from the Middle Triassic of Guizhou, China

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古脊椎动物学报 2015年第1期53卷 1-15页

作者： xu guang-hui SHEN Chen-Chen Key Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences Institute of Vertebrate Paleontology andPaleoanthropology Chinese Academy of Sciences Beijing 100044 xuguanghui@*** State Key Laboratory of Palaeobiology and Stratigraphy (Nanjing Institute of Geology and Palaeontology CAS) Nanjing 210008

The Ionoscopiformes are a fossil lineage of halecomorphs known only from the Mesozoic marine deposits. Because of their close relationships with the Amiiformes, the Ionoscopiformes are phylogenetically important in investigating the early evolution and biogeography of the Halecomorphi. However, fossil evidence of early ionoscopiforms was scarce; until recently, Robustichthys from the Middle Triassic Luoping Biota, eastern Yunnan, China, represents the oldest and only known ionoscopiform in the Triassic. Here we report the discovery of a new ionoscopiform, Panxianichthys imparilis gen. et sp. nov., on the basis of two well preserved specimens from the Middle Triassic Panxian Biota, western Guizhou, China. The discovery documents the second ionoscopiform in the Middle Triassic; although Panxianichthys is slightly younger than Robustichthys, it is significantly older than other members of this group from the Late Jurassic of Europe, and Early Cretaceous of North and South America. Panxianichthys possesses an important synapomorphy of the Ionoscopiformes: a sensory canal in the maxilla, but retains some primitive characters unknown in other ionoscopiforms. Results of our phylogenetic analysis recover Panxianichthys as the most primitive ionoscopiform, and provide new insight on the early evolution of this clade. The interrelationships of the Ionoscopidae have been reassessed; Quetzalichthys is regarded more closely related to Ionoscopus than to Oshunia. In addition, our analysis supports the reassessment of Furo muensteri as an ophiopsid ionoscopiform. The successive discoveries of Robustichthys and Panxianichthys from China indicate that the early diversification of the Ionoscopiformes is more rapid than previously thought.

关键词：动物学古脊椎动物学研究发展

First passage times for multidimensional denumerable state Markov processes

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Chinese Science Bulletin 1999年第11期44卷 970-980页

作者： xu guanghui(HSU guang-hui) and xu DejuInstitute of Applied Mathematics , Chinese Academy of Sciences , Beijing 100080, China Asian-Pacific Operations Research Center within CAS and APORS , Beijing 100080, China Institue of Applied Mathemics Chinese Academy of Sciences Beijing China Asian-Pacific Operations Research Center within CAS and APORS Beijing China

For a general multidimensional denumerable state Markov process with any initial state probability vector, the probability density function and its LS transform of the first passage time to a certain given state set are obtained and the algorithms for them are derived. It is proved that the resulting errors of the algorithms are both uniform in their respective *** numerical results are presented.

关键词： multidimensional denumerable state Markov process first passage time uniformization uniform error.

Late Paleozoic to early Mesozoic volcanic-sedimentary history of the southeastern margin of the Central Asian Orogenic Belt: Timing of uplift of the Inner Mongolia paleo-uplift

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Science China Earth Sciences 2025年第1期68卷 297-309页

作者： Wenxing HAO Jin-hui YANG guang ZHU State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences School of Resource and Environmental Engineering Hefei University of Technology

The Kulun region is located in the eastern Bainaimiao arc belt on the southeastern margin of the Central Asian Orogenic Belt(CAOB), adjacent to the North China Craton(NCC) to the south. This region records the closure of the PaleoAsian Ocean during the Paleozoic to early Mesozoic and is key to study the tectonic evolution of the northern margin of the *** conducted zircon U-Pb geochronology and Hf isotope analysis of volcanic-sedimentary and intrusive rocks in the Kulun region. The volcanic-sedimentary rocks were previously assigned an early Carboniferous age, but include volcanic rocks with ages of 267–266 Ma and sedimentary rocks with youngest detrital zircon age peaks of 265–244 Ma, which were intruded by a granite with an age of 242 Ma. This indicates that these rocks are actually middle Permian to Middle Triassic in age(267–242Ma) and correspond to the Qingfengshan and Liujiagou formations. Moreover, two volcanic rock samples have high εHf(t) values(+1.6 to +16.1) and relatively young two-stage Hf model ages(1095–327 Ma), indicating their sources associated with the CAOB. The age spectra and Hf isotopic characteristics of detrital zircons from the sedimentary rocks suggest that, during the middle Permian to Middle Triassic, the sedimentary provenance in the Kulun region was mainly the CAOB. However, by the Early Jurassic, the provenance changed to the NCC(i.e., the Inner Mongolia Paleo-uplift, IMPU). This result, combined with the development of a series of conglomerates on the northern margin of the NCC in the Late Triassic(i.e., Xingshikou, Xiaoyingzi,and Xiaohekou formations), indicates the Kulun region experienced an abrupt change in paleogeography during the Late Triassic, with the IMPU undergoing significant uplift and thus becoming the main sediment source in the Kulun region. Based on the Late Triassic alkaline igneous belt(235–215 Ma) in the IMPU, we speculate that this uplift was caused by detachment of the southward-subducting Paleo-Asian oceanic

关键词： Central Asian Orogenic Belt the North China Craton Zircon geochronology Hf isotopes Inner Mongolia Paleo-uplift

Cost-effectiveness Analysis of Two Therapeutic Regimens for Newly Diagnosed Smear-negative Pulmonary Tuberculosis

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Biomedical and Environmental Sciences 2018年第8期31卷 623-626页

作者： CHEN Liang MEI Jin Zhou CHEN xun xun FENG hui Ying WANG Jia Wen LI Hai Cheng xu guang hui XIAO Ling Wen HUANG Yi Xiang ZHOU Lin Center for Tuberculosis Control of guangdong Province Guangzhou 510430GuangdongChina Bao'an ChronicDisease Prevent and Cure Hospital Shenzheng 518020GuangdongChina Institute for Tuberculosis Control of Jiangmen Jiangmen 529000GuangdongChina Baiyun Center for Chronic Disease Control Guangzhou 510430GuangdongChina School of Public Health Sun Yet-sen UniversityGuangzhou 510080GuangdongChina

Tuberculosis （TB） has a severe effect on human health and causes a huge economic burden;.Previous studies have demonstrated that patients with smear-negative pulmonary TB accounted for approximately 60%-70% of the total pulmonary TB cases;. Therefore, it is extremely important to formulate safe, effective, and economic therapeutic regimens for patients with smear-negative pulmonary TB;.

关键词： TB

Algorithms for Markov stochastic models

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Chinese Science Bulletin 1999年第2期44卷 97-100页

作者： xu guanghui (HSU guang-hui)Institute of Applied Mathematics, Chinese Academy of Sciences, Asian-Pacific Operations Research Center Within CAS and APORS, Beijing 100080, China Institute of Applied Mathematics Chinese Academy of Sciences Asian-Pacific Operations Research Center Within CAS and APORS Beijing China

A survey of the main results of algorithmic studies of Markov processes and related stochastic models is shown. It consists of stationary solutions, transient solutions, first passage times, and multidimensional denum... 详细信息

关键词： Markov process stochastic model algorithm stationary solutions transient solutions first passage time uniform error.

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800kV隔离开关屏蔽环设计

高压电器 2006年第5期42卷 337-339页

作者：徐光辉河南平高电气股份有限公司河南平顶山467001

800kV隔离开关是我国西北电网建设750kV线路的重要开关设备之一。通过计算和试验研究找到了降低800kV特高压交流隔离开关的无线电干扰水平的途径,对屏蔽环的设计计算作了详细的阐述。

关键词： 800kV 隔离开关无线电干扰水平屏蔽环

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路基压实质量连续动态监控技术

中国公路学报 2007年第3期20卷 17-22页

作者：徐光辉高辉王哲人西南交通大学土木工程学院四川成都610031 哈尔滨工业大学交通科学与工程学院黑龙江哈尔滨150090

为了解决粗粒土路基压实质量较难控制的问题,在分析了已有连续压实质量控制方法的基础上,提出了以连续测试路基结构抗力变化信息为特色的动力学监控方法。根据压实机具与路基结构相互作用的动力学分析,以振动压路机为测试对象,采用系统... 详细信息

为了解决粗粒土路基压实质量较难控制的问题,在分析了已有连续压实质量控制方法的基础上,提出了以连续测试路基结构抗力变化信息为特色的动力学监控方法。根据压实机具与路基结构相互作用的动力学分析,以振动压路机为测试对象,采用系统识别原理和动态测试技术,通过对压实机具与路基结构相互作用的连续测试,得到了能反映结构压实状态变化的抗力信息。以路基结构在形成过程中抗力的变化来评价压实状态的变化,实现了在压实过程中连续实时的质量监控。该方法不同于国外流行的压实计谐波比的评价方法,适用范围更广,现场操作方便,更适用于粗粒土的压实质量监控。

关键词：道路工程路基压实质量动力学分析连续动态监控抗力指标

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基于奇异值分解的非线性滤波算法

上海交通大学学报 2005年第4期39卷 626-628页

作者：许光辉胡光锐宋阳上海交通大学电子工程系上海200030

为了克服强单音干扰条件下传统的线性预测滤波方法抗干扰性能不佳的问题,提出了一种联合奇异值分解(SVD)和非线性滤波抑制直接序列扩频通信(DS/SS)中单音干扰的方法,建立了相应的系统模型,并与传统的线性和非线性滤波器的误码率进行了比... 详细信息

为了克服强单音干扰条件下传统的线性预测滤波方法抗干扰性能不佳的问题,提出了一种联合奇异值分解(SVD)和非线性滤波抑制直接序列扩频通信(DS/SS)中单音干扰的方法,建立了相应的系统模型,并与传统的线性和非线性滤波器的误码率进行了比较.仿真结果表明,基于SVD的非线性滤波算法对干扰有很强的抑制能力,较好地改善了系统的性能.

关键词：奇异值分解非线性滤波扩频通信最小均方