褶合光谱法测定复方氧氟沙星滴耳液含量

目的：介绍疥灵霜的处方组成、配制方法和临床应用。方法：用疥灵霜治疗疥疮４４例,与应用２０％硫黄软膏对照。结果：有效率疥灵霜组９７７％,２０％硫黄软膏组８４％,两组差异显著（Ｐ＜０．０５）。结论：本品使用方便,疗效肯定,无毒副作用,有一定的临床应用价值。     

褶合光谱法同时测定抗敏Ⅰ号中双主药含量

本文应用计算机辅助褶合光谱分析法不经分离同时测定了抗敏Ｉ号中富马酸酮替芬和地塞米松磷酸钠的含量。平均回收率和ＲＳＤ分别为１０１．０１±０．７６％和９９．５１±１．６９％。结果显示,该法具简单、快速、准确等优点,较适合于医院制剂的常规分析。     

复方头孢氨苄胶囊的褶合光谱法测定

用褶合光谱法同时测定复方头孢氨苄胶囊中头孢氨苄和甲氧苄啶二组分的含量。头孢氨苄和甲氧苄啶的平均回收率分别为100．1％（RSD0．35％）和101．0％（RSD1．98％）。     

基于边界信息的医学图像三维插值

目的Cubic卷积插值是医学图像三维插值的常用方法,针对其插值处的结果边界模糊和精度不高的缺陷,建立一种精确度较高的插值方法。方法首先通过模糊对比度增强精确定位图像边界,再运用形态学运算确定出新插值图像边界,对于新插值图像边界点采用最佳匹配对应点插值;对于非边界点采用一种新的Cubic卷积插值方法确定其灰度值。结果本文方法的均方差、不符合像素点数和最大误差均小于传统插值方法。结论本文提出的方法具有较高的精确性。     

Off-resonance artifacts correction with convolution in k-space (ORACLE)

Off-resonance artifacts hinder the wider applicability of echo-planar imaging and non-Cartesian MRI methods such as radial and spiral. In this work, a general and rapid method is proposed for off-resonance artifacts correction based on data convolution in k-space. The acquired k-space is divided into multiple segments based on their acquisition times. Off-resonance-induced artifact within each segment is removed by applying a convolution kernel, which is the Fourier transform of an off-resonance correcting spatial phase modulation term. The field map is determined from the inverse Fourier transform of a basis kernel, which is calibrated from data fitting in k-space. The technique was demonstrated in phantom and in vivo studies for radial, spiral and echo-planar imaging datasets. For radial acquisitions, the proposed method allows the self-calibration of the field map from the imaging data, when an alternating view-angle ordering scheme is used. An additional advantage for off-resonance artifacts correction based on data convolution in k-space is the reusability of convolution kernels to images acquired with the same sequence but different contrasts.     

Application of Computer-Aided Convolution Curve Method to Spectrophotometric Analysis

Based on Glenn's orthogonal function treatment for thedetermination of multicomponents in mixtures, a computer-aidedconvolution curve method has been developed, with the elimination of itsinherent disadvantages, such as the strictness of selecting parameters, thetedious and timeconsuming calculations, and the restriction upon theabsorption shape of irrelevant absorption. Once data collection has beenmade the computer immediately provides the final answers concerning theconcentration of each component together with statistical information. Thedetermination of caffeine and sodium benzoate in injectio caffeini et natriibenzoatis was demonstrated with excellent results. The principle of themethod and the program for calculation were also briefly outlined.     

褶合光谱分析法测定盐酸苯海拉明糖浆的含量

本文采用褶合光谱分析法不经分离直接测定了盐酸苯海拉明的含量，具有操作简便，省时，结果准确等优点，适于制剂的质量控制。本实验平均回收率为100．00％，RSD为0．08％。     

Microdissection study of the length of different tubular segments of rat superficial nephrons

Summary Anatomical investigations have been carried out on rats of two different strains. The kidney weight was shown to be linearly dependent upon body weight. Microdissections of superficial nephrons revealed that there is a significant correlation between kidney weight and the length of the proximal convolution, loop of Henle and distal convolution. The mean length of the proximal convolution in a 1 g kidney was 5.91 mm, and of the loop of Henle (pars recta of the proximal tubule included) 6.50 mm. The bend of loops of Henle belonging to superficial nephrons was always situated in the outer medulla.

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Zusammenfassung An den Nieren von Ratten zweier unterschiedlicher Stämme wurde die Länge oberflächlich gelegener Nephrone mit der Mikrodissektionsmethode bestimmt. Dabei war eine direkte Korrelation zwischen dem Nierengewicht und den einzelnen Abschnitten des Nephrons (proximales Konvolut, Henlesche Schleife, distales Konvolut) nachweisbar. Die mittlere Länge des proximalen Konvoluts betrug für ein Nierengewicht von 1 g 5,91 mm und für die Henlesche Schleife einschließlich der pars recta des proximalen Tubulus 6,5 mm. Die Umbiegungsstelle von Schleifen oberflächlich gelegener Nephrone lag immer im äußeren Nierenmark. Diese Längenvariationen in Abhängigkeit vom Nierengewicht sind auch auf das Körpergewicht beziehbar, da sich eine annähernd lineare Beziehung zwischen Nierengewicht und Bruttokörpergewicht ergab.

     

结合迁移学习与深度卷积网络的心电分类研究

为解决一维深度卷积网络（1D-DCNN）在心电分类方面存在的多类疾病识别不准、难以提取最佳特征等问题,提出一种结合迁移学习与二维深度卷积网络（2D-DCNN）直接识别心电图像的方法。首先,截取R波前后75 ms内的心电信号,并将一维心电电压信号转化为二维灰度图像信号。接着,构建2D-DCNN对心电节拍样本进行分类训练,权值初始化采用在ImageNet大规模图像数据集上进行预训练的AlexNet参数值。本文提出方法在MIT-BIH心电数据库上进行性能验证,其准确率达到98%,并在不同信噪比下保持较高的准确率,证明了所述模型在心电分类上具有良好的鲁棒性。为了验证2D-DCNN的识别性能,实验部分与采用不同激活函数的1D-DCNN、近些年性能较好的深度学习方法进行比较。量化结果表明,结合迁移学习和2D-DCNN方法,比最优1D-DCNN算法,其准确率提升2%、敏感度提升0.6%、特异性提高4%;在二分类与多分类任务中,均好于现有的其他算法。     

利巴韦林注射液与其他4种注射液配伍稳定性研究

目的:考察室温8h内,利巴韦林注射液与4种不同药物(穿琥宁注射液、注射用头孢拉定、鱼腥草注射液、替硝唑氯化钠注射液)在5%葡萄糖溶液中的配伍稳定性。方法:采用褶合光谱法,结合外观和pH检查法,并以差谱值的形式予以定量表达。结果:在5%葡萄糖溶液中利巴韦林注射液与4种药物配伍,8h内外观均无变化,pH值基本不变,差谱值均小于10%。结论:室温8h内利巴韦林注射液与4药物在5%的葡萄糖中配伍均稳定。