A method for the rapid detection of the zopiclone degradation product 2-amino-5-chloropyridine

Zopiclone (Zimovane) is a cyclopyrrolone compound which exhibits hypnotic and sedative effects while also exhibiting anticonvulsant and muscle relaxant activities. The detection and quantification of zopiclone is difficult. It has a high molecular weight compared to most other commonly used drugs, therapeutic levels are not high, and it is unstable in nucleophilic solvents. A degradation product of zopiclone, 2-amino-5-chloropyridine (ACP) together with a method for its detection using high-performance liquid chromatography with diode array detection has been described previously. An account is presented of a simple method for the detection of ACP using gas chromatography with mass selective detection (GC/MS) which will facilitate detection of zopiclone use as part of a routine screen.     

犬细小病毒血凝抑制抗体和中和抗体的关系

对8份犬细小病毒免疫的犬血清同时进行中和(SN)抗体和血凝抑制(HI)抗体检测.结果,SN抗体和HI抗体具有正比线性关系,SN抗体近似于6倍HI抗体.其中HI抗体检测可在3 h内获得结果,操作简便,通过测定HI抗体效价即可推算出SN抗体的效价.     

正交试验法优选黄精加压酒蒸工艺研究

目的 优选黄精加压酒蒸的最佳工艺。方法 以外观性状和黄精多糖为指标,采用正交试验法考察蒸制时间、蒸制温度、加酒量、蒸制次数4个因素,优选黄精的炮制工艺。结果 黄精加压酒蒸最佳工艺为黄精100 g,10%黄酒闷润,120 ℃高压蒸60 min,取出,切3 mm厚片,干燥。结论 优选得到的黄精炮制工艺稳定,可为黄精饮片的工业化生产提供参考依据     

一种改良酸性磷酸酶试验鉴定精斑的方法

本文报道了一种改良的酸性磷酸酶试验方法。用该法鉴定精斑，可克服非特异性反应，排除其它体液和植物汁液的影响。     

脑卒中后单侧空间忽略的诊疗思路

单侧空间忽略是脑卒中后常见的认知功能障碍,快速诊治对恢复患者运动功能和日常生活能力具有重要意义.应将中医基础理论和现代康复理念结合,采用中医临床诊断和行为注意障碍评测、凯瑟林-波哥量表评定结合的方式进行诊断.运用针刺联合康复训练的方式分期治疗,以达到标本兼治的目的,提高临床疗效.此外,应在治疗的过程中不断进行疗效反馈,...     

HaeⅢ和HinfⅠ酶解DNA指纹图的比较——一例乱伦案的亲子鉴定

<正> DNA指纹技术已经在法医生物物证鉴定中被日益广泛地应用。从理论上说,两种不同的限制性内切酶酶解同一个体DNA产生完全不同的指纹图,虽有这方面的一般性报道,但无进一步的研究。作者用α—珠蛋白-3’HVR探针比较了HinfI和HaeⅢ酶解的DNA指纹图,并将此结果应用于案例鉴定,报道如下。     

运用神经行为测试系统评价酒后行为功能的可行性研究

目的研究运用神经行为测试系统评价酒后行为功能的可行性。方法采用汉化第三版计算机化神经行为评价系统(NES-C3),通过自身对照的方式,对49名饮酒者进行神经行为功能的测试,并与步行回转试验进行比较。结果心算、视觉保留、线条判断和数字筛选均在酒后0.5￣2.5h的时间点上能力指数有所下降,视简单反应时能力指数下降则延续至酒后5.5h;步行回转在酒后0.5￣2.5h间有阳性案例。血中酒精质量浓度在0.50mg/mL以上,视觉保留、线条判断及视简单反应时的能力指数有明显下降;血中酒精质量浓度在0.80mg/mL以上,心算和数字筛选的能力指数有明显下降。步行回转实验的阳性人数在血中酒精质量浓度0.50mg/mL以上有明显增加。结论计算机化神经行为评价系统作为一个定量指标,可反应酒精质量浓度与神经行为功能的关系,且比步行回转试验更客观、更灵敏。     

化学显色法快速筛选饮料及尿液中γ-羟基丁酸和γ-丁内酯

目的建立化学显色法快速筛选饮料及尿液中γ-羟基丁酸(GHB)及其前体γ-丁内酯(GBL)的方法。方法在酸性条件下GHB转化为GBL,GBL和盐酸羟胺在碱性条件下生成γ-羟基丁酰羟胺,γ-羟基丁酰羟胺在酸性条件下和三氯化铁反应,生成紫红色的络合物。结果饮料中GHB最低检出浓度为0.5～2mg/mL,低于常见滥用质量浓度。该方法也可以用于尿液分析,最低检出质量浓度为0.5mg/mL。考察了常见有机溶剂和麻醉镇静药物的干扰。结论该方法简单、安全、快速,为临床和法庭科学实验室快速筛选GHB和GBL提供了便利。     

Injury Pattern as an Indication of Seat Belt Failure in Ejected Vehicle Occupants

Prior authors have suggested that when occupant ejection occurs in association with a seat belt failure, entanglement of the outboard upper extremity (OUE) with the retracting shoulder belt will invariably occur, leaving injury pattern evidence of belt use. In the present investigation, the authors assessed this theory using data accessed from the NASS‐CDS for ejected front seat occupants of passenger vehicles. Logistic regression models were used to assess the associations between seat belt failure status and injuries. Injury types associated with seat belt failure were significant OUE and head injuries (OR = 3.87, [95% CI 1.2, 13.0] and 3.1, [95% CI 1.0, 9.7], respectively). The two injury types were found to be a predictor of seat belt use and subsequent failure only if combined with a high (≥0.8) precrash probability of belt use. The injury pattern associated with a seat belt failure‐related ejection has limited use in the forensic investigation of crash‐related ejections.     

建设桂林国家级信息化和工业化融合试验区之路

我国目前拥有16个国家级信息化和工业化融合试验区。桂林作为一个工业并不发达的旅游城市能够列入其中,确是非同寻常之事。为此,我们应该充分认识桂林的有利条件和不利因素,找到一条适应桂林＂两化融合＂健康发展的道路。