体内无线式内窥镜胶囊视频图像采集系统的设计

提出了一种新的数字无线式内窥镜胶囊视频图像采集系统。在对系统工作原理及其特点介绍的基础上,对微型成像系统中的图像采集和数据转换传输部分和无线发射部分进行了设计与改进,从而降低发射功耗,并减小电路尺寸。对所设计线路的实验测试表明:方案中的各系统部件调试工作正常,满足设计要求。     

射干止咳胶囊抗炎作用初探

目的 探讨射干(Belamcanda chinense)止咳胶囊抗炎作用及相关机制.方法 采用小鼠耳肿胀实验和大鼠肉芽肿实验,观察射干止咳胶囊的抗炎作用,并通过检测经脂多糖(LPS)诱导的肺损伤小鼠血清中白介素6(IL-6)及肿瘤坏死因子 α(TNF-α)水平,推测其可能的抗炎作用机制.结果 与空白对照组比较,射干止咳...     

分布式虚拟现实系统中多播通信的研究与应用

通过对分布式多用户虚拟现实系统多播通信模型的研究，对现有多播通信协议作了进一步改进，使之能动态地解决用户的加入与离开，能快速地构建分配树，很好地满足系统的实时性和扩展性。     

妇斑消胶囊的质量标准研究

利用薄层色谱法对妇斑消胶囊中人参 ,当归进行了定性鉴别 ,并用薄层扫描法对人参中人参皂苷Rg1行了含量测定。结果表明 ,在TLC色谱中能检出当归 ,人参 ;人参皂苷Rg1在 1.0 5 .0 μg范围内线性关系良好 ,妇斑消胶囊中人参皂苷Rg1含量在 0 .0 2 5 %左右 ,平均回收率为 97.7%。本实验研究为妇斑消胶囊质量标准制定提供了依据。     

采用图像处理的胶囊尺寸缺陷检测方法

针对透明胶囊的成像特点,提出一种实时性好、健壮性较强的结合阈值分割、腐蚀、轮廓提取及区域填充的图像提取算法.利用旋转和一阶差分分割胶囊本体,通过最小包围矩形测量胶囊的尺寸,并与公认标准进行对比,从而判别胶囊是否存在尺寸缺陷.实验结果表明:胶囊图像提取和尺寸缺陷识别算法的平均漏检率为6.38%,平均误检率为4.13%.     

基于BP神经网络和AHP的软胶囊滴丸产品质量软测量建模

为了解决软胶囊滴丸产品质量控制系统的建模问题,文中提出了一种基于BP神经网络和层次分析法（AHP）的二级软测量建模方法．首先详细分析了软胶囊滴丸生产过程质量控制的性能要求和影响产品生产过程质量的因素,给出软胶囊滴丸产品的二级层次结构质量指标体系和操作变量;在此基础上,利用BP神经网络进行建模,获得以工艺参数为输入,以各二级质量指标为输出的软胶囊滴丸生产过程质量子模型;然后,用AHP确定各二级指标的权重,最终建立软胶囊滴九生产过程质量控制的二级软测量模型．仿真实验结果表明了该方法的有效性．     

安宫牛黄胶囊中麝香酮含量测定

采用气相色谱法对安宫牛黄胶囊中的麝香酮含量进行了分离测定,在0.002～4.0 g/L范围内线性关系良好,线性相关系数为0.999 4.样品中麝香酮含量为0.096%～0.100%,平均回收率为95.1%～100.6%.方法可用于制剂的质量控制.     

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）.     

Changes in body temperature and circulating levels of interleukin-6 after intra-arterial injections or infusions of tumor necrosis factor α in guinea pigs

Tumor necrosis factor (TNF) is released systematically during the early phase of endotoxin induced fever. To study the effects of this cytokine in guinea pigs, 2 g TNF were intra-arterially injected as a bolus or slowly infused within 60 min. Both modes of administration induced a biphasic elevation of the animals' abdominal temperature lasting 6 h and stimulated the release of endogenous interleukin-6 (IL-6)-like activity. The second phase of the thermal response and the release of endogenous IL-6-like activity were significantly higher, when TNF was slowly infused into the animals' circulation, in spite of a transiently higher TNF-like activity after the bolus injection of TNF. Both TNF and IL-6 may therefore be regarded as candidates to trigger the febrile response in guinea pigs.     

颈椎1号胶囊中岩白菜素的质量比测定

建立颈椎1号胶囊中岩白菜素质量比的测定方法.采用HPLC法测定岩白菜素质量比,在使用Hypersil ODS2(4.6 mm×200 mm,5μm)色谱柱,流动相为甲醇-水(20∶80),流速1 m L/min,柱温25℃,检测波长275 nm的条件下测定.经方法学考察,稳定性试验、精密度试验、重现性试验及加样回收率试验均符合要求.本方法准确、简便,可用于颈椎1号胶囊中岩白菜素的质量比测定.