共查询到20条相似文献,搜索用时 78 毫秒
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焦克芳 《军事医学科学院院刊》1992,16(4):306-308
本文综述了作者及其合作者应用计算机在药物合成、构效关系分析、新药物设计、光谱解析、立体化学、有机反应机理的探讨及优化反应条件等方面的研究工作。 相似文献
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医院制剂及其开发工作是把医院药剂科科技生产力转化为直接生产力的过程.也是结合临床进行有关药物的性质、剂型、药检、药理、药品质量、配伍禁忌等研究和开展临床药学研究,提高医院药学整体水平的途径之一.因此,发挥好医院制剂灵活多变的生产模式和自身优势,提高在为病人服务的医疗工作中的技术性服务含量,必将促进药剂科由传统的保障供应型逐步实现向技术服务型的转变. 相似文献
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药学信息技术在新的药学服务模式中的拓展应用 总被引:1,自引:0,他引:1
20世纪90年代由Hepler等提出的药学服务(Pharmaceutical care)已成为医院药学的又一崭新工作模式,目前在我国正处于初步建设和普及推广阶段。该模式中强调的“向包括医生、护士、患者以及普通民众的广大人群提供及时、准确、全面的药物相关信息,即实行药学信息服务(Pharmceutical information service)”是该药学服务模式所有工作的中心和基础,这一切又都离不开以计算机网络为标志的现代药学信息技术的拓展和完善。本文拟对药学信息技术在新的药学服务模式中的拓展应用作些初步探讨。 相似文献
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本文报告用改进的高效液相色谱法测定7名肝功损害患者自身交叉口服布洛芬混悬液及布洛芬控速──缓释制剂后的血药浓度,并计算药动学参数和相对生物利用度。布洛芬控速──缓释制剂体内表现为一级吸收的二室开放模型,其主要药动学参数为:a=0.67±0.11hr-1,β=0.091±0.01hr-1,k21=0.34±0.09hr-1,K10=0.18±0.03hr-1,K12=0.23±0.05hr-1,t1/2(α)=1.06±0.17hr,t1/2(β)=7.74±0.7hr,Vβ=23.8±4.0L,AUC=190.6±24.9ug·himl-1相对生物利用度F=0.97。 相似文献
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新生血管生成是前列腺癌发生、发展及转移的重要因素之一,动态增强MRI(DCE-MRI)通过采集对比剂注入前、中、后的组织影像信息,可获得时间-信号强度曲线、半定量及定量灌注参数,反映肿瘤组织的微循环及血流灌注变化,以实现对前列腺癌的定量分析。就DCE-MRI在前列腺癌定性诊断、半定量及定量分析、分期诊断及疗效评估方面的价值及研究进展予以综述。 相似文献
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Ruowen Zong Youran Zhi Bin Yao Jiaxin Gao Anna A. Stec 《The Australian journal of forensic sciences》2013,45(2):224-233
Identification of soot sources is significant in fire investigation and forensic science. In this paper, principal component analysis (PCA) and a back-propagation (BP) neural network model have been used to classify and identify the soot samples from three different kinds of combustible material. Diesel, polystyrene and acrylonitrile butadiene styrene were burnt under the controlled combustion conditions in small-scale burn tests. Based on the matrix data from the GC-MS analysis data, two principal components have been obtained from PCA analysis with the cumulative energy content of 90.21%. Three different kinds of soot sample can be classified with 100% accuracy. A BP neural network model for predicting and identifying the soot source has been further developed. Accurate identification of the unknown samples has been achieved with this trained BP model. This pilot study indicates that PCA and BP neural network methods have potential in the analysis of soot to identify its principle pre-combustion source material. 相似文献
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Application of three-dimensional orthogonal neural network to craniomaxillary reconstruction 总被引:1,自引:0,他引:1
The purpose of this investigation is to establish a practical method to predict and create surface a profile of bone defects by a well-trained 3-D orthogonal neural network. First, the coordinates of the skeletal positions around the boundary of bone defects are input into the 3-D orthogonal neural network to train it to learn the scattering characteristic. The 3-D orthogonal neural network avoids local minima and converges rapidly. After the neural network has been well trained, the mathematic model of the bone defect surface is generated, and the pixel positions are derived. Herein, to verify its performance the proposed method is applied on a patient with a craniofacial defect. 相似文献
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Prediction of volume fractions in three-phase flows using nuclear technique and artificial neural network 总被引:1,自引:0,他引:1
Csar Marques Salgado Luis E.B. Brando Roberto Schirru Cludio M.N.A. Pereira Ademir Xavier da Silva Robson Ramos 《Applied radiation and isotopes》2009,67(10):1812-1818
This work presents methodology based on nuclear technique and artificial neural network for volume fraction predictions in annular, stratified and homogeneous oil–water–gas regimes. Using principles of gamma-ray absorption and scattering together with an appropriate geometry, comprised of three detectors and a dual-energy gamma-ray source, it was possible to obtain data, which could be adequately correlated to the volume fractions of each phase by means of neural network. The MCNP-X code was used in order to provide the training data for the network. 相似文献
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Electropherograms are produced in great numbers in forensic DNA laboratories as part of everyday criminal casework. Before the results of these electropherograms can be used they must be scrutinised by analysts to determine what the identified data tells them about the underlying DNA sequences and what is purely an artefact of the DNA profiling process. This process of interpreting the electropherograms can be time consuming and is prone to subjective differences between analysts. Recently it was demonstrated that artificial neural networks could be used to classify information within an electropherogram as allelic (i.e. representative of a DNA fragment present in the DNA extract) or as one of several different categories of artefactual fluorescence that arise as a result of generating an electropherogram. We extend that work here to demonstrate a series of algorithms and artificial neural networks that can be used to identify peaks on an electropherogram and classify them. We demonstrate the functioning of the system on several profiles and compare the results to a leading commercial DNA profile reading system. 相似文献
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目的:利用超声结合人工神经网络技术预测血清促黄体激素(luteinizing hormone,LH)基础值。方法:选用71例性早熟女童进行常规超声检查子宫、卵巢,以其中61个病例的子宫体积、卵巢体积以及双侧卵巢最大卵泡内径为输入变量,以LH基础值为输出变量,建立BP神经网络,并用另10个病例作为测试检验,将预测结果与实际值作统计分析。结果:BP网络预测的结果与实际值作线性回归,得到回归直线的斜率为1.0088,回归直线的相关系数为0.977。结论:性早熟女童超声检查结合BP神经网络技术可以预测LH基础值。 相似文献