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Importance of b value in diffusion weighted imaging for the diagnosis of pancreatic cancer

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World Journal of Gastroenterology 2013年第39期19卷 6651-6655页

作者： Jin-Gang Hao jia-ping wang Ya-Lv Gu Ming-Liang Lu Department of Radiology the Second Affiliated Hospital of Kunming Medical University Department of Gastroenterology the Second Affiliated Hospital of Kunming Medical University

AIM:To investigate the use of multi-b-value diffusionweighted imaging in diagnosing pancreatic ***:We retrospectively analyzed 33 cases of pancreatic cancer and 12 cases of benign pancreatic tumors at the Second Affiliated Hospital of Kunming Medical University from December 2008 to *** demographic characteristics,clinical presentation,routine magnetic resonance imaging and diffusion weighted imaging(DWI)features with different b values were *** data were expressed as mean±*** between pancreatic cancer and benign pancreatic tumors were performed using the Student’s t test.A probability of P<0.05 was considered statistically ***:Thirty-three patients with pancreatic cancer were *** mean age at diagnosis was 60±5.6 *** male:female ratio was 21:*** cases were confirmed by surgical resection and 13 by biopsy of metastases.T1 weighted images demonstrated a pancreatic head mass in 16 patients,a pancreatic body mass in 10 cases,and a pancreatic tail mass with pancreatic atrophy in 7 *** patients had hepatic metastases,13 had invasion or envelopment of mesenteric vessels,4 had bone metastases,and 8had lymph node *** demonstrated an irregular intense mass with unclear *** tissue demonstrated an uneven low signal.A b of 1100s/mm2was associated with a high intensity signal with poor anatomical delineation.A b of 700 s/mm2was associated with apparent diffusion coefficients(ADCs)that were useful in distinguishing benign and malignant pancreatic tumors(P<0.05).b values of 50,350,400,450 and 1100 s/mm2were associated with ADCs that did not differentiate the two ***:Low b value images demonstrated superior anatomical details when compared to high b value *** tissue definition was high and contrast with the surrounding tissues was *** was useful in diagnosing pancreatic cancer.

关键词： Pancreatic cancer Magnetic resonance imaging b value Apparent diffusion coefficient Diffusion weighted imaging

Next-generation sequencing technology for diagnosis and efficacy evaluation of a patient with visceral leishmaniasis: A case report

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World Journal of Clinical Cases 2021年第32期9卷 9903-9910页

作者： Zhou-Ning Lin Yong-Cheng Sun jia-ping wang Yan-Li Lai Li-Xia Sheng Internal Medicine School of Medicine Ningbo UniversityNingbo 315000Zhejiang ProvinceChina Department of Hematology Ningbo First HospitalNingbo 315000Zhejiang ProvinceChina

BACKGROUND Visceral leishmaniasis(VL)is a parasitic disease caused by Leishmania and transmitted by infected sand *** has a low incidence in China,and its clinical presentation is complex and *** disease is easily misdiagnosed and can become life-threatening within a short period of ***,early,rapid and accurate diagnosis and treatment of the disease are *** SUMMARY A 25-year-old male patient presented with the clinical manifestations of irregular fever,hepatosplenomegaly,increased polyclonal globulin,and *** first bone marrow puncture biopsy did not provide a clear *** order to relieve the pressure and discomfort of the organs caused by the enlarged spleen and to confirm the diagnosis,splenectomy was performed,and hemophagocytic syndrome was diagnosed by pathological examination of the spleen *** bone marrow and spleen pathological re-diagnosis and metagenomic next-generation sequencing(mNGS)technology detection,the patient was finally diagnosed with *** treatment with liposomal amphotericin B,the body temperature quickly returned to normal and the hemocytes recovered ***-treatment re-examination of the bone marrow puncture and mNGS data showed that Leishmania was not *** As a fast and accurate detection method,mNGS can diagnose and evaluate the efficacy of treatment in suspicious cases of leishmaniasis.

关键词： Visceral leishmaniasis Kala-azar Next-generation sequencing Hemophagocytic lymphohistiocytosis Diagnosis Case report

New monoterpene phenyl ethers from Illicium micranthum

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Natural Products and Bioprospecting 2013年第2期3卷 43-47页

作者： Zheng-Ye GUAN Chuan-Fu DONG a Li GAO jia-ping wang Shi-De LUO Yi-Fen wang State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China

Seven new monoterpene phenyl ethers,namely micranthumnins A-G(1-7),were isolated from the stem bark of Illicium micranthum(Illiciaceae).Their structures were elucidated by comprehensive spectroscopic analyses includin... 详细信息

关键词： Illicium micranthum monoterpene phenyl ethers micranthumnins anti-AChE activities

Achieving ultralow leakage current in Schottky-MIS cascode anode lateral field-effect diode based on AlGaN/GaN HEMT

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Science China(Information Sciences) 2025年第1期68卷 379-385页

作者： Fangzhou wang Changhong GAO Guojian DING Cheng YU Zhuocheng wang Xiaohui wang Qi FENG ping YU Peng ZUO Wanjun CHEN Yang wang Haiqiang jia Hong CHEN Bo ZHANG Zeheng wang Songshan Lake Materials Laboratory School of Microelectronics Southern University of Science and Technology State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China Manufacturing Commonwealth Scientific and Industrial Research Organisation

In this paper,we design and fabricate a Schottky-metal-insulator-semiconductor（MIS） cascode anode GaN lateral field-effect diode（CA-LFED） to achieve ultralow reverse leakage current(ILEAK).The device based on AlGaN/GaN highelectron-mobility-transistor（HEMT） includes a normally-off MIS-controlled channel that is cascoded with a high barrier height Schottky *** reverse bias,the high electric-field is effectively prevented by the normally-off MIS-controlled channel *** with the high barrier height Schottky contact,this feature significantly suppresses the *** by the device fabrication,the CA-LFED with high breakdown voltage（BV）>600 V shows an ultralow ILEAKof 3.6×10-9A/mm as well as a low forward voltage drop（VF） of 2.2 *** performance suggests that the CA-LFED can be a promising candidate for ultralow ILEAKand better VF-ILEAKtrade-off GaN power diode applications.

关键词： Schottky-MIS cascode anode lateral field-effect diode (LFED) ultralow reverse leakage current ($I_{\rm{LEAK}}$) forward drop and reverse leakage trade-off AlGaN/GaN HEMTs

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Characteristics of Obesity and Its Related Disorders in China

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Biomedical and Environmental Sciences 2010年第1期23卷 4-11页

作者： WEI-ping jia ,CHEN wang,SHAN jiaNG,AND JIE-MIN PAN Department of Endocrinology and Metabolism,Shanghai jiao Tong University Affiliated Sixth People’s Hospital,Shanghai Diabetes Institute,Shanghai Clinical Center of Diabetes,Shanghai 200233,China Department of Endocrinology and Metabolism Shanghai Jiao Tong University Affiliated Sixth People's Hospital Shanghai Diabetes Institute Shanghai Clinical Center of Diabetes Shanghai 200233 China

Obesity is a medical condition with excess body fat accumulation to the extent which leads to serious health consequences. Abdominal obesity, also known as central obesity, refers to the presence of excess fat in the abdominal area. Obesity, especially abdominal obesity, contributes to many metabolic disorders including metabolic syndrome （MetS）, type 2 diabetes （T2DM） and cardiovascular diseases （CVD）. The incidence of obesity has increased dramaticaUy in recent yeats worldwide. In China, more than one-third of adults are overweight or obese and 10%-20% of all adults are affected by MetS. The pathogenesis underlying the abdominal obesity remains unclear. The ultimate health outcome of obesity and its related metabolic disorders have prompted physicians to take aggressive treatments （lifestyle changes, pharmacological interventions and surgical therapies） before a serious consequence becomes clinically apparent. In this review, we discuss the prevalence, pathogenesis and clinic features of obesity in China.

关键词： Obesity Metabolic syndrome Type 2 diabetes Cardiovascular disease

Dihydroartemisinin induces apoptosis and down- regulates hypoxia inducible factor- 1 α in C6 glioma cells

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中国药理通讯 2006年第4期23卷 53-54页

作者： Ma Zhen - Qiu Huang Xiao - jia Zhang Wei - ping wang Meng - Ling Fang San - Hua Wei Er - Qing Department of Pharmacology School of Medicine Zhejiang University Hangzhou 310058

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太阳能电池板自动追光系统研究

仪表技术与传感器 2018年第5期 78-82页

作者：贾丹平王阳沈阳工业大学信息科学与工程学院辽宁沈阳110870

为提高太阳能的利用率,设计了一套以STC89C52单片机为控制核心的自动追光系统。系统采用光电追踪和视日运动轨迹追踪相结合的方法,通过阴晴检测电路判断晴天或阴天。晴天时利用光电传感器采集的光强偏差控制步进电机,实现光电追踪;阴天... 详细信息

为提高太阳能的利用率,设计了一套以STC89C52单片机为控制核心的自动追光系统。系统采用光电追踪和视日运动轨迹追踪相结合的方法,通过阴晴检测电路判断晴天或阴天。晴天时利用光电传感器采集的光强偏差控制步进电机,实现光电追踪;阴天时采集时钟芯片信息利用Spencer算法计算当时当地的太阳高度角和方位角,驱动步进电机,实现视日运动轨迹追踪。实验表明,该追光系统能在不同天气状况下对太阳进行较准确追踪,能量接收效率明显提高,达到了充分利用太阳能的目的。

关键词：光电追踪视日运动轨迹追踪阴晴检测电路步进电机 Spencer算法

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太阳辐照度绝对辐射计的光电不等效性修正

光学精密工程 2016年第10期24卷 2370-2376页

作者：唐潇贾平王凯宋宝奇方伟王玉鹏中国科学院长春光学精密机械与物理研究所吉林长春130033 中国科学院大学北京100049

针对绝对辐射计光电不等效性来源复杂、实验测量难度大的特点,提出了修正太阳辐照度绝对辐射计(SIAR)光电不等效性的有限元单元法。结合SIAR的测量方法,对真空中辐射计的腔温响应进行了实验测试。基于有限元单元法,建立了与实验腔温度... 详细信息

针对绝对辐射计光电不等效性来源复杂、实验测量难度大的特点,提出了修正太阳辐照度绝对辐射计(SIAR)光电不等效性的有限元单元法。结合SIAR的测量方法,对真空中辐射计的腔温响应进行了实验测试。基于有限元单元法,建立了与实验腔温度响应相对误差仅为0.14%的有限元模型,对接收腔的温度响应进行了实验测试。测试结果显示:入射光功率为73.8mW时,接收腔与热沉之间的温度差异约为0.85K,响应的时间常数为29.8s。运用建立的有限元模型对SIAR的光电不等效性进行了评估和修正。结果表明:太阳辐照度绝对辐射计的光电不等效性来源主要为不同加热途径和不同加热区域引起的偏差,SIAR的光电不等效性因子N为0.999 621±0.000 004。该修正模型完善了仪器的修正体系,提高了测量精度,为绝对辐射计的发展提供了可靠的数据来源。

关键词：太阳辐照度绝对辐射计有限元单元法光电不等效性温度响应

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信息化、居民消费与中国经济增长质量

经济经纬 2018年第3期35卷 137-143页

作者：张家平程名望潘烜同济大学经济与管理学院上海200092

基于信息化的视角,运用门槛回归模型检验了居民消费对中国经济增长质量的非线性影响。研究表明:居民消费对经济增长质量影响存在显著的信息化水平双门槛效应,随着门槛值提高居民消费对经济增长质量的积极作用增强;城镇居民消费对经济增... 详细信息

基于信息化的视角,运用门槛回归模型检验了居民消费对中国经济增长质量的非线性影响。研究表明:居民消费对经济增长质量影响存在显著的信息化水平双门槛效应,随着门槛值提高居民消费对经济增长质量的积极作用增强;城镇居民消费对经济增长质量的影响效应相对于农村居民更强,但是在不同门槛值上,农村居民消费对经济增长质量影响效应的跳越程度更大。这项研究为信息化在提升中国居民消费、促进经济增长质量方面的积极作用提供了一定的经验证据。

关键词：信息化居民消费经济增长质量门槛效应