垂体促甲状腺激素瘤的临床特点分析和治疗

目的探讨垂体促甲状腺激素瘤(垂体TSH瘤)导致中枢性甲亢的临床特点及治疗,为临床治疗提供参考。方法回顾性分析5例垂体TSH瘤患者的临床和实验室检查资料,5例均有不同程度的高代谢症状伴或不伴鞍区占位效应,且血清FT4、FT3水平升高,TSH升高或正常,均经垂体磁共振(平扫+增强)检查为大腺瘤。结果 4例行经鼻蝶神经内镜鞍区占位切除术,1例行开颅垂体瘤切除术,术后病理证实均为垂体腺瘤,免疫组化TSH阳性。结论甲亢患者血清TSH不被抑制时要警惕有无垂体TSH瘤的可能,需及时行垂体磁共振检查,若发现垂体腺瘤尽早手术治疗

Study on production of liquid hydrocarbon fuels from sorbitol and mannitol

在温和条件下研究了氢碘酸还原生物质基多元醇制备液体燃料的过程,使用气相色谱质谱仪(GC-MS)和红外光谱仪(FT-IR)分析了产物组成。结果表明,山梨醇和甘露醇为原料制备的液体产物中主要成分是C_(12)H_(16)、C_(12)H_(18)、C_(12)H_(20)、C_(12)H_(22)和C_(18)H_(26)等烃类物质。通过与碱的醇溶液反应将副产物碘代烷转化为烃,经旋转蒸发和减压蒸馏获得纯净的高碳烃产品。山梨醇、甘露醇以及二者混合物制备出的高碳烃的产率分别是81.1%、73.2%和77.3%。本研究获得的高碳烃产品是一种有前景的液体燃料,其含水量为0.1%,密度为0.83~0.84 g·mL~(-1),含氧量为2.0%~2.2%,热值均高于42 MJ·kg~(-1)。This paper describes the process of sorbitol and mannitol conversion to liquid heavier hydrocarbons via reduction with hydroiodic acid under mild reaction conditions. The compositions of the obtained products were analyzed using gas chromatography mass spectrometer( GC-MS) and Fourier transform infrared spectrometer( FT-IR). It is found that the products obtained from C6 polyols were mainly C_(12)H_(16),C_(12)H_(18),C_(12)H_(20),C_(12)H_(22) and C_(18)H_(26). The yields of heavier hydrocarbons from sorbitol,mannitol,and the mixture of sorbitol and mannitol were 81. 1%,73. 2%,and 77. 3%,respectively.To obtain pure hydrocarbon fuels,the obtained crude oil was treated with potassium hydroxide in an alcohol solution followed by rotary evaporation and vacuum distillation. The final liquid hydrocarbons obtained have a water content of 0. 1%,densities of 0. 83 ~ 0. 84 g·mL~(-1),oxygen content of 2. 0% ~2. 2%,and heating values > 42 MJ·kg~(-1) at room temperature,which is potentially a good transportation fuel for diesel replacement.国家自然科学基金项目(21276214

SURVEY ON NUTRITION AND HEALTH STATUS of URBAN RESIDENTS IN XIAMEN

目的了解厦门市城区居民营养与健康状况。方法根据全国营养调查方案,2010年10~12月对厦门市城区的6个社区居委会居民进行调查,采用连续3 d 24 H回顾法对其中的519人进行膳食调查,用称重法调查调味品的消耗,计算每标准人日各类营养素的摄入量;依据“中国居民膳食营养素参考摄入量drIS(2000)“对膳食营养状况进行评价。对775人进行了健康体检。结果本次调查的厦门市城区居民人群的蛋类食物摄入适宜,谷薯类、蔬菜、水果、奶类、豆类食物摄入偏低,禽畜类、食用油、盐摄入偏高;宏量营养素供能比例不合理,脂肪、钠摄入偏高,膳食维生素A、硫胺素、核黄素、维生素C、钙、锌摄入不足状况严重;被调查人群低体重率为3.2%,超重率为32.3%,肥胖率为8.6%,高血压患病率为12.7%,贫血患病率为7.0%,空腹血糖受损率9.4%,考虑糖尿病率为6.7%,血脂异常率高达55.7%。结论被调查人群膳食结构不合理,部分微量营养素摄入不足,脂肪、盐摄入偏高,慢性病患病状况比较严重,群体健康状况不容乐观。Objective To investigate the nutrition and health status of urban residents in Xiamen.Methods According to the National Nutrition Survey Program, six community's residents of Xiamen were selected for the survey from Oct to Dec, 2010.Total of 519 subjects were surveyed with continuous 3 days 24 hours recall method to acquire the food consumption data, and the weighing method was employed to record the consumption of condiment.Then, the average intakes of nutrients per day were calculated.The average intakes of seven main nutrients per day were evaluated based on the Chinese Dietary Reference Intakes(DRIs)(2000).The health examination were carried on in 775 persons.Results The intakes of egg was adequate; and the intakes of cereals, potatoes, vegetables, fruits, milk, and beans were inadequate.Intakes of meat and oil were slightly higher.The proportion contributed by macronutrients for energy was inadequate and the intakes of fat and sodium were higher than the recommended level.Dietary intakes of vitamin A, thiamine, riboflavin, vitamin C, calcium, and zinc were insufficient.The rate of average underweight, overweight, obesity, hypertension, anemia, impaired fasting glucose, suspected diabetes and dyslipidemia among the study population were 3.2%, 32.3%, 8.6%, 12.7%, 7.0%, 9.4%, 6.7% and 55.7% respectively.Conclusion Dietary pattern was not adequate among the surveyed population.Some micronutrients were insufficient.However, intakes of salt and fat were higher than the recommended level.Consequently, the prevalence of chronic diseases were elevated, and the health status seriously compromised

temporal logic based hypertext specification

将基于时序逻辑的多媒体脚本描述模型从线性顺序时空关系描述推广到非线性时空关系的超文本描述，提出了一种新的超文本模型．通过该模型可将超文本的结点、链和超文本结构的逐步求精过程在一个统一的框架内描述．使用该模型设计的一个超文本标注语言已经实现，并基于该语言开发了一个交互式超文本编著环境

a methodology for automatically constructing a multimedia synchronizer in xyz/re

XYZ系统是一个以增强软件可靠性和提高软件生产率为目的的程序开发支撑系统 .它由时序逻辑语言(temporal logic language,简称 TLL) XYZ/ E和以该语言为基础的一组软件工程工具组成 .为了研究 XYZ系统在多媒体领域中的应用问题 ,介绍了一种依据多媒体对象时序描述自动生成用 XYZ/ RE表示的播放同步器的方法 ,XYZ/ RE是时序逻辑语言族 XYZ/ E中表示实时系统的子语言 .与相关工作比较 ,该方法不仅可以处理简单的时序关系 ,而且可以处理嵌套的时序关系 ,所产生的同步器可以复用于不同的节目 .中国计算机学

基于取样光栅的可调谐激光器的设计与研究

针对可调谐激光器光栅加工灵活性低和成本昂贵的问题,文章研究并设计了一种基于取样光栅（SG）的新型可调谐分布式布拉格反射（DBR）激光器以降低可调谐激光器的制作成本。文章提出利用SG取代传统DBR激光器的均匀光栅,在采用与均匀光栅相同的双光束干涉曝光工艺的情况下,可以在单片集成芯片中低成本并灵活地实现不同DBR激光器调谐范围的调整。通过对该结构DBR激光器的模拟研究发现,该激光器在工作范围内可以实现>45 dB的边模抑制比（SMSR）,单个激光器可以实现10 nm以上的调谐,不同激光器调谐范围的取值可以实现40 nm以上的整体调整

He-CO散射截面的量子力学研究

采用精确度较高的密耦方法(Close-Coupling)计算了He-CO碰撞的散射截面,能量从5 meV~70meV,计算结果与M.Keil等的实验结果(64 meV)基本相符.研究表明:势能的零点能位置、势阱深度、势阱位置、排斥势强度以及势能在势阱附近的方向性都对散射截面有较大的影响