Smart Image Sensor with Integrated Low Complexity Image Processing for Wireless Endoscope Capsules

A smart image sensor was developed which integrates a digital pixel image sensor array with an image processor designed for wireless endoscope capsules. The camera-on-a-chip architecture and its on-chip functionality facilitate the design of the packaging and power consumption of the integrated capsule. The power reduction techniques were carried out at both the architectural and circuit level. Gray coding and power gating in the sensor array to eliminate almost 50% of the switch activity on the data bus and more than 99% of the power dissipation in each pixel at a transmitting rate of 2 frames per second. Filtering and compression in the processor reduces the data transmission by more than 2/3. A parallel fully pipelined architecture with a dedicated clock management scheme was implemented in the JPEG-LS engine to reduce the power consumption by 15.7%. The smart sensor has been implemented in 0.18 μm CMOS technology.     

手法配合痹祺胶囊治疗腰椎间盘突出症临床研究

为观察手法加痹祺胶囊治疗腰椎间盘突出症的临床疗效,对160例腰椎间盘突出症患者随机分为两组:治疗组病人80例,采用手法加痹祺胶囊治疗; 对照组病人80例, 只行痹祺胶囊治疗.经临床治疗显示: 治疗组总有效率为98.75%, 对照组为88.75%, 两组比较有显著性差异 (P＜0.05).临床治疗证明:手法配合痹祺胶囊治疗腰椎间盘突出症见效快,治愈率高.     

蓖麻蒴果剥壳力学特性的试验

为了实现蒴果壳与蓖麻籽成功剥离,载荷的大小以及载荷来自的方位相当重要.在蓖麻蒴果壳的物理特性测定分析基础上,运用接触力学对蓖麻蒴果脐部与顶部和腰部受到压载荷时,进行力学特性的试验分析与研究.结果显示蒴果在脐部与顶部受到压载荷作用时,果壳破裂的位置在蒴果顶部中缝处,中果皮内面产生裂纹而使蓖麻籽在果壳中脱出;蒴果在腰部受到压载荷作用时,果壳破裂的位置出现在蒴果中果皮中缝的两端,蒴果四周角靠近直线处也有裂纹而使蓖麻籽在果壳中脱出,蓖麻蒴果脐部与顶部受力大于腰部受力.     

潜空导弹运载器控制系统设计与仿真

变深度水平发射垂直出水是潜空导弹运载器的一项关键技术.针对垂直出水的弹道控制,建立了运载器仿真的数学模型;并在控制理论和经验数据的基础上,分析了潜空导弹运载器水弹道控制的特点,设计了PID控制器和模糊控制器.结果表明:设计的两种控制器,能够满足指标要求,模糊控制器具有更强的适应能力.     

脑栓通胶囊对动脉粥样硬化小鼠血脂水平的影响

目的 观察脑栓通胶囊对动脉粥样硬化小鼠血脂水平的影响,探讨脑栓通胶囊治疗脑卒中的机制。方法 6周龄雄性Apo E -/- 小鼠,采用高脂饮食法建立动脉粥样硬化模型,造模成功后随机分为模型组、脑栓通胶囊低剂量组、脑栓通胶囊高剂量组。低剂量组给予脑栓通胶囊0. 5 g/kg体质量,高剂量组给予脑栓通胶囊1. 0 g/kg体质量,对照组给予等量的蒸馏水。连续给药12周后腹主动脉取血,分离血清。酶偶联比色法测定血清总胆固醇（total cholesterol,TC）、甘油三酯（triglyceride,TG）、低密度脂蛋白胆固醇（low density lipoprotein-cholesterol,LDL-C）、高密度脂蛋白胆固醇（high density lipoprotein-cholesterol,HDL-C）水平。结果 与模型组相比,脑栓通胶囊低剂量组和高剂量组均显著降低血清中TC、TG和LDL-C的含量,但对HDL-C含量无影响。结论 脑栓通胶囊可以调节血脂水平,其治疗脑卒中的作用机制很可能与该途径有关。     

OMOM capsule endoscopy in diagnosis of small bowel disease

Objective： To assess the diagnostic efficiency of OMOM capsule endoscopy （CE） in a group of patients with different indications. Methods： Data from 89 consecutive patients （49 males, 40 females） with suspected small bowel disease who underwent OMOM CE （Jinshan Science and Technology Company, review. The patients＇ indications of the disease consisted of the Chongqing, China） examination were obtained by retrospective following： obscure gastrointestinal bleeding （OGIB）, abdominal pain or diarrhea, partial intestinal obstruction, suspected inflammatory bowel disease, tumor of unknown origin, hypoproteinemia, constipation, weight loss, and elevated tumor markers. Results： CE failed in one patient. Visualization of the entire small bowel was achieved in 75.0%. Capsules were naturally excreted by all patients. The detection rate of abnormalities was 70.5% for patients with suspected small bowel disease, and the diagnostic yield for patients with OGIB was higher than that for patients with abdominal pain or diarrhea （85.7% vs 53.3%, P〈0.005）. Angiodysplasia was the most common small bowel finding. Active bleeding sites were noted in the small intestine in 11 cases. Conclusion： OMOM CE is a useful diagnostic tool for the diagnosis of variably suspected small bowel disease, whose diagnostic efficiency is similar to that of the Pillcam SB （small bowel） CE （Given Imaging, Yoqneam, Israel）.     

返回舱动态稳定性分析及被动控制方法研究

耦合求解非定常可压缩Navier-Stokes方程和刚体运动方程,数值模拟返回舱跨声速俯仰自由振动过程,探讨返回舱前后体对动态稳定性的影响及其被动控制方法.研究结果表明：在俯仰振动过程中,返回舱前体对流场做正功,释放返回舱振动能量,抑制振幅增加;而返回舱后体对流场做负功,增加返回舱振动能量,导致振幅增加,当两者相等时,振动进入极限环状态.在上述物理机理分析基础上,本文给出六种不同的返回舱后体修改方案,并采用数值模拟方法研究不同的后体外形对返回舱俯仰自由振动幅度和频率特性参数的影响,研究结果可为返回舱设计及动态稳定性的控制方法提供依据.     

耳聋胶囊治疗纯音听阈呈感音神经性聋的分泌性中耳炎患者的临床疗效观察

目的:探讨耳聋胶囊对治疗纯音听阈呈感音神经性聋的分泌性中耳炎患者的作用。方法:将电测听表现为感音神经性聋的71例分泌性中耳炎患者分为耳聋胶囊治疗组(51例)及临床对照组(20例),耳聋胶囊治疗组在常规治疗的基础上加用耳聋胶囊口服,观察两组患者治疗前后纯音听阈的变化情况。结果:耳聋胶囊治疗组治疗效果优于临床对照组,差异(P<0.05)有统计学意义。结论:耳聋胶囊治疗对呈感音神经性聋的分泌性中耳炎有提高听力的治疗作用。     

非全浸式催化剂包效率因子的测定方法

设计一种测定非全浸式催化剂包的效率因子装置, 并用它测定了醋酸甲酯催化精馏中试塔所用催化剂包的效率因子     

HPLC-DAD法测定补肾壮骨胶囊中紫丁香苷的质量比

为控制补肾壮骨胶囊中紫丁香苷的质量比,采用反相高效液相色谱方法,以Symmetry C18为色谱柱,V甲醇：V0.2％冰醋酸水溶液=55：45为流动相,流速1mL／min,柱温：30℃,二极管阵列检测器,提取波长为265nm,测得补肾壮骨胶囊中紫丁香苷的质量比为1．46mg／g,平均回收率为98．25％,结果表明,该方法简便、准确、重现性好,适用于补肾壮骨胶囊的质量控制．