10种果实类中药中脂肪酸的分离鉴定和含量测定

采用１００１型气相色谱仪对１０种果实类中药中的脂肪酸进行了测定。结果表明：１０种果实样品中含量均较高的脂肪酸为十六碳酸、十八碳酸、十八碳一烯酸、十八碳二烯酸、十八碳三烯酸，其余成分含量较低或未测得。     

On Integral Equation and Least Squares Methods for Scattering by Diffraction Gratings

In this paper we consider the scattering of a plane acoustic or electromagnetic wave by a one-dimensional, periodic rough surface. We restrict the discussion to the case when the boundary is sound soft in the acoustic case, perfectly reflecting with TE polarization in the EM case, so that the total field vanishes on the boundary. We propose a uniquely solvable first kind integral equation formulation of the problem, which amounts to a requirement that the normal derivative of the Green's representation formula for the total field vanish on a horizontal line below the scattering surface. We then discuss the numerical solution by Galerkin's method of this (ill-posed) integral equation. We point out that, with two particular choices of the trial and test spaces, we recover the so-called SC (spectral-coordinate) and SS (spectral-spectral) numerical schemes of DeSanto et al., Waves Random Media, 8, 315-414, 1998. We next propose a new Galerkin scheme, a modification of the SS method that we term the SS^∗ method, which is an instance of the well-known dual least squares Galerkin method. We show that the SS^∗ method is always well-defined and is optimally convergent as the size of the approximation space increases. Moreover, we make a connection with the classical least squares method, in which the coefficients in the Rayleigh expansion of the solution are determined by enforcing the boundary condition in a least squares sense, pointing out that the linear system to be solved in the SS^∗ method is identical to that in the least squares method. Using this connection we show that (reflecting the ill-posed nature of the integral equation solved) the condition number of the linear system in the SS^∗ and least squares methods approaches infinity as the approximation space increases in size. We also provide theoretical error bounds on the condition number and on the errors induced in the numerical solution computed as a result of ill-conditioning. Numerical results confirm the convergence of the SS^∗ method and illustrate the ill-conditioning that arises.     

驱蚊植物药理与作用研究概述

概述了驱蚊植物的种类、药理作用和驱避方式研究情况,介绍了几种常见的观赏性驱蚊植物的特点。     

g and Energy3-6

学院,中国石油大学信息与控制工程学院 山东东营257061,山东东营257061阴极防腐;;拓扑;;零电流开关;;状态轨迹;;开关电源提出一种适用于输油金属管线阴极防腐保护的新型DC/DC变换器,讨论其电路拓扑及工作原理,通过规范化状态轨迹图,对其工作过程进行定量分析与研究,得     

Stiles-Crawford effect of the first kind (SCE-I) in post-photorefractive keratectomy and anisometropic subjects

The Stiles-Crawford effect of the first kind (SCE-I) was measured on both post-photorefractive keratectomy (PRK) and anisometropic subjects at six different locations of retina. The eye that underwent the PRK procedure showed results that were typical of myopic eyes, although the vision in that eye has been maintained at 6/5 (or 20/15) since the operation. The anisometropic subject had one eye that was emmetropic and the other eye was myopic with a refractive error of -3.00 DS. The emmetropic eye showed the normal well-centered SCE-I functions across the retina, whereas the myopic eye of the same subject showed the nasal tilting of receptors in the nasal retina, which has been the typical finding among myopic subjects.     

锁骨颅骨发育不全综合征(CCD)1例报告

目的：分析1例锁骨颅骨发育不全综合征的典型病例。为临床正确诊断该类遗传性疾病提供临床依据。方法：对1例锁骨颅骨发育不全综合征患进行临床检查、染色体检查、并对其家族成员进行家系调查。结果：临床确诊锁骨颅骨发育不全综合征，主要临床表现为异常发育的锁骨，囟门的闭合不全，多生牙，身材矮小等一系列骨骼的改变。家系调查被诉怀疑有相关病患发生，染色体检查未见异常。结论：锁骨颅骨发育不全综合征是一种由于常染色体变异所造成的骨骼发育异常。及时正确地诊断该疾病，对于病患的进一步的正畸及修复治疗非常重要。     

去甲万古霉素改善化疗相关性腹泻患者生活质量的作用

目的:评估肠道细菌分布改变在肿瘤化疗相关性腹泻中的作用及去甲万古霉素的治疗价值,探讨此疗法对肿瘤患者生活质量的影响。方法:采用革兰氏染色,测定肿瘤化疗相关性腹泻患者及同期化疗无腹泻者的菌群分布情况,对腹泻者试验性应用去甲万古霉素治疗。结果:102例肿瘤化疗相关性腹泻患者中87例出现难辨梭状芽孢杆菌感染,83例出现菌群失调,36例出现肠道真菌感染;而对照组菌群分布正常。去甲万古霉素治疗该种腹泻有效率91.2%。与治疗前相比患者腹泻症状缓解、Karnofsky评分改善、体重增加,生活质量得到改善。结论:菌群失调,难辨梭状芽孢杆菌、真菌感染在化疗相关性腹泻中占重要地位。去甲万古霉素是治疗该种腹泻安全有效的措施并对患者生活质量有一定的作用。     

A CASE OF HUGE GASTRIC DISOPYROBEZOAR

PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are     

桂枝及其类方在早期类风湿关节炎中的运用

目的:探讨桂枝及其类方在早期类风湿关节炎的治疗作用和可行性。方法:从中医"治未病"的思想出发,以《黄帝内经》和《伤寒杂病论》对风湿痹病理法方药的论述,得出桂枝及其类方在早期类风湿关节炎中应用的可行性。结果:早期类风湿关节炎为营卫不和,风、寒、湿、热邪痹阻,对此形成的行痹、痛痹、着痹和热痹等,均可以桂枝及其类方化裁治疗。结论:桂枝及其类方可运用于早期类风湿关节炎。     

2004-2010年陕西省主要性病病种报告病例分析

目的分析陕西省2004-2010年梅毒、淋病、尖锐湿疣、生殖器疱疹病例报告构成及其原因,促进临床医生按照卫生部有关标准正确诊断报告病例。方法采用构成比分析中国疾病预防控制系统陕西省报告性病疫情资料。结果 2004-2010年梅毒正确报告(报告确诊病例即实验室诊断病例,下同)率为73.37%,淋病正确报告率为67.20%,生殖器疱疹和尖锐湿疣正确报告率分别为99.81%和99.84%,梅毒、淋病误报率较高。结论临床医生必须按照卫生部有关标准正确诊断和报告梅毒、淋病、尖锐湿疣、生殖器疱疹病例,以便疾病控制部门掌握其流行情况,为制定防治措施提供依据。