检索结果-南通市图书馆

Colorectal cancer in Guangdong Province of China:A demographic and anatomic survey

World Journal of Gastroenterology 2010年第8期16卷 960-965页

作者： xu, An-Gao Yu, Zhi-Jin Jiang, Bo Wang, Xin-Ying zhong, xu-hui Liu, Ji-Hong Lou, Qiu-Yun Gan, Ai-Hua huizhou Municipal Cent Hosp Dept Gastroenterol Huizhou 516001 Guangdong Peoples R China So Med Univ Nanfang Hosp Dept Gastroenterol Guangzhou 510515 Guangdong Peoples R China

AIM:To determine the basic demographic features of colorectal cancer (CRC) in five hospitals located in four different areas of Guangdong Province,***:A review of patient records from 1986 to 2006 from five hospitals was conducted. Patient data was obtained,including age,gender,location of le-sions,staging and histological type of CRC. The Chi-square test was used to assess differences in rates and a significance level of 0.05 was used. Univariate com-parisons were made via Fisher's exact ***:Analysis was carried out on 8172 CRC patents,6.1% (499/8172) of the patients were aged ≤ 30 years. The peak incidence was between the ages 61-70 years (27.8%). The mean age at CRC diagnosis increased from 52 years (1986-1988) to 60 years(2004-2006) and the proportion of young CRC patients decreased from 8.0% to 5.9% over the same period. Of 8172 lesions,4434 (54.3%) were located in rectum and 3738 (45.7%) in colon. The incidence of rectal cancer decreased significantly from 59.4% (1989-1991) to 51.8% (2004-2006) and right sided colon cancer increased from 40.6% to 48.2%. The mean age,ana-tomic distribution,histological type and differentiation degree were significantly different among the four geographical areas (P < 0.05).CONCLUSION:The hospitalization rate for CRC has increased in Guangdong in recent years. The characteristics of CRC from the five hospitals located in the four different areas of Guangdong Province are also different. Further studies are needed to assess more recent trend in the incidence and prevalence of CRC as well as the respective roles of genetic and environ-mental factors in CRC.

关键词： Colorectal cancer Survey Characteristics Differentiation

来源：

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

Insufficiency of Mrpl40 disrupts testicular structure and semen parameters in a murine model

引用

Asian Journal of Andrology 2023年第5期25卷 627-631页

作者： Ying Liu Long-Long Fu hui-zhong xu Yi-Ming Zheng Wei-Xi Li Guang-hui Qian Wen-Hong Lu Hai-Tao Lv Institute of Pediatric Research Children's Hospital of Soochow UniversitySuzhou 215025China National Health Commission Key Laboratory of Male Reproductive Health National Research Institute for Family PlanningBeijing 100081China Institute for Advanced Study and School of Physical Science and Technology Soochow UniversitySuzhou 215006China

Approximately 31%of patients with 22q11.2 deletion syndrome(22q11.2DS)have genitourinary system disorders and 6%of them have undescended *** of genes on chromosome 22q11.2 might contribute to the risk of *** this study,we used mice with single-allele deletion in mitochondrial ribosomal protein L4o(Mrpl40-)as models to investigate the function of Mrpl40 in testes and spermatozoa *** penetrance of cryptorchidism in Mrpl40+-mice was found to be higher than that in wild-type(WT)*** the weight of testes was not significantly different between the WT and Mrpl40+-mice,the structure of seminiferous tubules and mitochondrial morphology was altered in the Mrpl40+-***,the concentration and motility of spermatozoa were significantly decreased in the Mrpl4O+-*** addition,data-independent acquisition mass spectrometry indicated that the expression of genes associated with male infertility was altered in Mrpl40+-*** study demonstrated the important role of Mrpl40 in testicular structure and spermatozoa motility and *** findings suggest that Mrpl4o is potentially a novel therapeutic target for cryptorchidism and decreased motility and count of spermatozoa.

关键词： cryptorchidism DiGeorge syndrome semen analysis spermatozoa

来源：

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

Isolation and Characterization of a Dichlorvos-Degrading Strain DDV-1 of Ochrobactrum sp.

引用

Pedosphere 2006年第1期16卷 64-71页

作者： ZHANG Xiao-Hua ZHANG Guo-Shun ZHANG zhong-hui xu Jian-Hong LI Shun-Peng Key Lab of Microbiological Engineering of Agricultural Environment Ministry of Agriculture Nanjing Agricultural University Nanjing 210095 （China）. Jiangsu-Polytechnic College of Agriculture and Forestry Jurong 212400 （China）

The objective of this research was to isolate a dichlorvos (2,2-dichlorovinyl dimethyl phosphate)-degrading strain of Ochrobactrum sp., and determine its effectiveness in remediation of a dichlorvos-contaminated soil. A dichlorvos-degrading bacterium (strain DDV-1) was successfully isolated and identified as an Ochrobactrumsp. based on its 16S rDNA sequence analysis. Strain DDV-1 was able to utilize dichlorvos as a sole carbon source, and the optimal pH and temperature for its cell growth and degradation were 7.0 and 30 ℃, respectively. Also, the growth and degradation of strain DDV-1 showed the same response to dissolved oxygen. In addition, the soil degradation test indicated that in soil spiked with 100 mg L-1 or 500 mg L-1 dichlorvos and inoculated with 0.5% or 1.0% (v/v) strain DDV-1, complete degradation of dichlorvos could be achieved in 24 h. The present study showed that strain DDV-1 was a fast dichlorvos-degrading bacterium in soil. However, further research will be needed to clarify the degradation pathway and the properties of the key enzymes involved in its biodegradation.

关键词： degradation dichlorvos 16S rDNA soil test strain DDV-1

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Evaluation of renal artery stenosis using color Doppler sonography in young patients with multiple renal arteries

引用

Chinese Medical Journal 2011年第12期000卷 1824-1828页

作者： QIN Wei ZHANG Xin YANG Min zhong xu-hui ZHAO Ming-hui Department of Nephrology Peking University First Hospital Beijing100034 China Deoartment of Vascular intervention Peking University First Hospital Beijing100034 China Department of Pediatrics Peking University First Hospital Beijing100034 China Institute of Nephrology Peking University Key Laboratory ofRenal Disease Ministry of Health of China Beijing 100034 China

Background Some individuals have multiple renal arteries. Severe stenosis in one of the arteries may cause refractory hypertension. The detection of stenosis within one of the multiple renal arteries usually required invasive procedures, such as computed tomographic angiography （CTA） and magnetic resonance angiography （MRA）. This study reported the application of color Doppler sonography （CDS） in the detection of severe stenosis in one of the multiple arteries. Methods Patients with multiple renal arteries and one of the arteries with severe stenosis were retrospectively studied. Peak systolic velocities （PSV） of renal arteries and the intrarenal CDS patterns were collected and compared. The diagnosis was confirmed by digital subtraction angiography （DSA）. Results Four children with multiple renal arteries and one of the arteries with stenosis were investigated. They were admitted due to refractory hypertension. CDS screening identified two renal arteries in one kidney of each patient with one of the two renal arteries having stenosis 〉70%. The PSV of the stenosed arteries were much higher, and the intrarenal CDS patterns supplied by the stenosed arteries changed into T-P patterns. Conclusion Non-invasive CDS technology may be a useful method to identify severe stenosis in one of multiple renal arteries in younq patients.

关键词： renal artery abnormalities color Doppler sonography angiography

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Frequency-tunable single-photon router based on a microresonator containing a driven three-level emitter

引用

Chinese Physics B 2024年第6期33卷 377-381页

作者：黄劲松胡菁兰李艳玲徐中辉 School of Information Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Science Jiangxi University of Science and TechnologyGanzhou 341000China

We propose a frequency-tunable router of single photons with high routing efficiency, which is constructed by two waveguides mediately linked by a single-mode whispering gallery resonator with a driven three-level emitter. Quantum routing probability in the output port is obtained via the real-space Hamiltonian. By adjusting the resonator–emitter coupling and the drive, the desired continuous central frequencies for the resonance peaks of routing photons can be manipulated nearly linearly, with the assistance of Rabi splitting effect and optical Stark shift. The proposed routing system may provide potential applications in designing other frequency-modulation quantum optical devices, such as multiplexers,filters, and so on.

关键词： quantum routing scattering theory optical waveguide microresonator

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Role of Contrast-enhanced Ultrasound in the Evaluation of Inflammatory Arthritis

引用

Chinese Medical Journal 2017年第14期130卷 1722-1730页

作者： Chen-Yang Zhao Yu-Xin Jiang Jian-Chu Li zhong-hui xu Qing Zhang Na So Meng Yang Department of Ultrasound Peking Union Medical College Hospital Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730 China

Objective：Contrast-enhanced ultrasound （CEUS） is a well-established imaging modality which has been put into clinical use in recent years with the development of second-generation contrast agent and imaging devices,and its applications in the assessment of inflammatory arthritis,such as rheumatoid arthritis,psoriatic arthritis,and ankylosing spondylitis,have provoked abundant discussion and researches among radiologists and *** summarize the achievements of clinical studies on CEUS in the application of arthritis,and to keep up with the latest progresses of the imaging technique,we reviewed the literature in recent years,hoping to establish the role of CEUS in joint *** Sources：PubMed and *** Selection：We searched the database with the conditions ＂contrast-enhanced ultrasound AND arthritis＂ with the time limitation of recent 10 *** studies applying CEUS in inflammatory arthritis and review articles about development of CEUS in joint diseases in English were ***：As it is proved by most studies in recent years,by delineating microvasculature within the inflamed joints,CEUS can indicate early arthritis with high sensitivity and ***,the imaging of CEUS has been proved to be consistent with histopathological changes of inflammatory *** analysis of CEUS permits further evaluation of disease *** also plays a significant role in the therapeutic monitoring of the disease,which has been backed up by a number of ***：CEUS may be a new choice for the rheumatologists to evaluate inflammatory arthritis,because of its low price,ability to provide dynamic pictures,and high sensitivity to *** can also be applied in disease classification and therapeutic *** studies about CEUS need to be done to set up the diagnostic standards.

关键词： Conlrast-enhanced Ultrasound hlflammatory Arthritis Rheumatoid Arthritis Ultrasound

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Single-photon scattering and quantum entanglement of two giant atoms with azimuthal angle differences in a waveguide system

引用

Chinese Physics B 2024年第5期33卷 337-342页

作者：黄劲松黄红武李艳玲徐中辉 School of Information Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Faculty of Science Jiangxi University of Science and TechnologyGanzhou 341000China

We theoretically investigate coherent scattering of single photons and quantum entanglement of two giant atoms with azimuthal angle differences in a waveguide *** the real-space Hamiltonian,analytical expressions are derived for the transport spectra scattered by these two giant atoms with four azimuthal ***-like resonance can be exhibited in the scattering spectra by adjusting the azimuthal angle *** concurrence of the entangled state for two atoms can be implemented in a wide angle-difference range,and the entanglement of the atomic states can be switched on/off by modulating the additional azimuthal angle differences from the giant *** suggests a novel handle to effectively control the single-photon scattering and quantum entanglement.

关键词： quantum transport quantum entanglement scattering theory optical waveguide

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

手绘效果图课程在环艺设计教学中的作用

引用

包装工程 2005年第4期26卷 185-187页

作者：钟旭晖徐蕾赣南师范学院赣州341000

作为一名优秀的环艺设计者,手绘效果图是他们用来表达艺术构思,方案不断完善的重要手段,是与业主承包商沟通设计意图的工程技术语言。本文着重从现代电子科技对手绘效果图的强烈冲击以及手绘效果图对环艺设计人员的重要性等几个方面进... 详细信息

作为一名优秀的环艺设计者,手绘效果图是他们用来表达艺术构思,方案不断完善的重要手段,是与业主承包商沟通设计意图的工程技术语言。本文着重从现代电子科技对手绘效果图的强烈冲击以及手绘效果图对环艺设计人员的重要性等几个方面进行论述,强调手绘效果图在环艺设计教学中的必然性和必要性。

关键词：手绘效果图电脑效果图构思草图形象思维形式美

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

广东地区3870例大肠癌的临床流行病学特征

引用

中华内科杂志 2006年第1期45卷 9-12页

作者：许岸高姜泊钟旭辉刘集鸿南方医科大学南方医院消化内科广州510515 广东惠州市中心人民医院消化内科

目的探讨广东地区大肠癌的临床特点和发病规律。方法总结分析广州南方医院和惠州市中心人民医院1985—2004年经病理确诊的3870例大肠癌的资料。结果3870例大肠癌患者中位年龄55．3岁。好发年龄为41～70岁。其中青年大肠癌（年龄≤30岁）... 详细信息

目的探讨广东地区大肠癌的临床特点和发病规律。方法总结分析广州南方医院和惠州市中心人民医院1985—2004年经病理确诊的3870例大肠癌的资料。结果3870例大肠癌患者中位年龄55．3岁。好发年龄为41～70岁。其中青年大肠癌（年龄≤30岁）204例，占5．3％。随年龄增长，直肠癌逐渐减少，而右半结肠癌逐渐增加。男：女为1．42：1。3870例共检测出3958个病灶，其中单病灶3783例（97．8％），多病灶87例（2．2％）。3958个病灶部位分别位于直肠2243例（56．7％），左半结肠717例（18．1％），右半结肠998例（25．2％）。组织学分型为：管状腺癌2943例（76．0％），乳头状腺癌256例（6．6％），黏液癌425例（11．0％），其他246例（6．4％）。青年大肠癌分化不良者占38．2％，而中年和老年大肠癌只占29．9％和14．6％，差异有统计学意义（P〈0．01）。确诊时Dukes分期A、B、C和D期分别占234例（6．0％），1936例（50．0％），1310例（33．9％）和390例（10．1％），其中进展期癌（B、C、D期）共3636例，占94．0％。结论近20年问广东地区大肠癌的收治率逐渐增加，并随年龄增长，直肠癌比例逐渐减少，而右半结肠癌比例逐渐增加。半数大肠癌发生于直肠，其次为右半结肠和左半结肠。广东地区大肠癌已失去中国大肠癌既往的三大临床流行病学特点。

关键词：结肠直肠肿瘤流行病学研究腺癌

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ultrasonographic Characteristics of Intraductal Papillary Mucinous Neoplasm of the Pancreas

引用

Chinese Medical Sciences Journal 2010年第3期25卷 151-155页

作者： Ke Lu Qing Dai zhong-hui xu Yi-xiu Zhang Li Tan Yan Yuan Yu-xin Jiang Department of Ultrasound Peking Union Medical College Hospita Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 China

Objective To analyze the clinical and ultrasonographic imaging features of intraductal papillary mutinous neoplasm （1PMN） of the pancreas. Methods Twelve patients with IPMN underwent surgery between May 2005 and December 2008, including 4 （33.3%） with adenoma and 8 （66.7%） with adenocarcinoma. IPMN was classified preoperatively into 3 types based on sonographic findings of different sites： main duct, branch duct, and combined type. All clinical presentations and ultrasonographic findings of those paticnts were reviewed and the correlation be- tween ultrasonographic hndings and histopathological results was analyzed. Results There were 9 men and 3 women with a mean age of 60.1±9.6 years （range, 32-73）. OF all the 12 patients with IPMN, 9 （75.0%） had experienced some symptoms of epigastric discomfort and/or pain as cell as backache; 7 cases were with medical history of acute pancreatitis, 5 cases with diabetes, 4 cases with elevated CA19-9, and 2 cases with steatorrhea. All lesions of IPMN have been revealed by transabdominal ul- trasonography. The mean diameters of the lesions were 1.4±0.8 cm （range, 0.5-2.0） and 6.3±6.0 cm （range, 2.0-20.0） in adenomas and adenocarcinomas, respectively. And the mean diameters of the main duct in adelnomas and adenocarcinomas were 1.0±0.8 cm and 1.6±1.0 cm, respectively. Among the 4 adnomas, 3 （75.0%） cases were classified as branch type based on sonographic findings, and 2 were demonstrated as mural nodules in which no color signals was detected. Among the 8 adenocarcinomas, 5 （62.5%） cases were classifled as main duct type, and 3 （37.5%） as combined type. In 7 of the 8 adcnocarcinomas, mural nodules were detected within the dilated ducts or cysts of the lesions in which color flow signals were detected. Conclusions Transabdominal ultrasonography can reveal the pancreatic cystic lesions of IPMN as well as dilated pancreatic： ducts. Some characteristics should be noticed as suggesting the possibility of malignancy： clinical sympt

关键词： intraductal papillary mucinous neoplasm pancreas ultrasonography

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：