4种药物多输入多输出滴注用模糊逻辑系统的决策制定

目的 研究多年来老年心脏病手术及手术后监护时，4种药物多输入多输出滴注用模糊逻辑系统的决策制定的原理及方法。方法 从模糊逻辑原理起到4种药物对老年心脏病6种症状的病理状态及治疗策略加以研究。结果 求得典型的模糊逻辑用语言结构，表层结构及电脑用的深度结构。结论 在模糊逻辑理论的概念基础上，可算得模糊化输出，代入病人症状的主要生理参数MAP，MPAD和CO检测值。应用模糊匹配及准则计算的结果就是4种药物多输入多输出滴注时的决策制定成功。以一种狗实验的结论证明此种模糊决策制定模块确能成功应用于临床。     

Calendering as a direct shaping tool for the continuous production of fixed-dose combination products via co-extrusion

In this study calendering is used as a downstream technique to shape monolithic co-extruded fixed-dose combination products in a continuous way. Co-extrudates with a metoprolol tartrate-loaded sustained-release core and a hydrochlorothiazide-loaded immediate-release coat were produced and immediately shaped into a monolithic drug delivery system via calendering, using chilled rolls with tablet-shaped cavities. In vitro metoprolol tartrate release from the ethylcellulose core of the calendered tablets was prolonged in comparison with the sustained release of a multiparticulate dosage form, prepared manually by cutting co-extrudates into mini-matrices. Analysis of the dosage forms using X-ray micro-computed tomography only detected small differences between the pore structure of the core of the calendered tablet and the mini-matrices. Diffusion path length was shown to be the main mechanism behind the release kinetics. Terahertz pulsed imaging visualized that adhesion between the core and coat of the calendered tablet was not complete and a gradient in coat thickness (varying from 200 to 600 μm) was observed. Modulated differential scanning calorimetry and X-ray diffraction indicated that the solid-state properties of both drugs were not affected by the calendering procedure.     

美国临床药物治疗学中营养模块对我国本科该教学内容设计的启示

美国药物治疗学中具有较完备的营养管理内容：其中理论教学的内容包括营养风险筛查和评估,肠内营养（EN）和肠外营养（PN）的配伍及适应症,制定营养方案,营养途径选择,营养监护要点,营养并发症的预防和处理;案例教学包括营养相关问题的设计,问题讨论。建议学习上述经验,在本科药学治疗学中纳入营养内容,以适应临床工作的需要     

Modularity of stress response evolution

Responses to extracellular stress directly confer survival fitness by means of complex regulatory networks. Despite their complexity, the networks must be evolvable because of changing ecological and environmental pressures. Although the regulatory networks underlying stress responses are characterized extensively, their mechanism of evolution remains poorly understood. Here, we examine the evolution of three candidate stress response networks (chemotaxis, competence for DNA uptake, and endospore formation) by analyzing their phylogenetic distribution across several hundred diverse bacterial and archaeal lineages. We report that genes in the chemotaxis and sporulation networks group into well defined evolutionary modules with distinct functions, phenotypes, and substitution rates as compared with control sets of randomly chosen genes. The evolutionary modules vary in both number and cohesiveness among the three pathways. Chemotaxis has five coherent modules whose distribution among species shows a clear pattern of interdependence and rewiring. Sporulation, by contrast, is nearly monolithic and seems to be inherited vertically, with three weak modules constituting early and late stages of the pathway. Competence does not seem to exhibit well defined modules either at or below the pathway level. Many of the detected modules are better understood in engineering terms than in protein functional terms, as we demonstrate using a control-based ontology that classifies gene function according to roles such as "sensor," "regulator," and "actuator." Moreover, we show that combinations of the modules predict phenotype, yet surprisingly do not necessarily correlate with phylogenetic inheritance. The architectures of these three pathways are therefore emblematic of different modes and constraints on evolution.     

Research on Microstructure and Mechanical Properties of Rheological Die Forging Parts of Al-6.54Zn-2.40Cu-2.35Mg-0.10Zr(-Sc) Alloy

High-strength aluminum alloy (mainly refers to the 7xxx series) is the optimum material for lightweight military equipment. However, this type of aluminum alloy is a wrought aluminum alloy. If it is directly formed by traditional casting methods, there will inevitably be problems such as coarseness, unevenness, looseness, and hot cracking in the structure, which will greatly affect the final performance of the part. Based on the internal cooling with annular electromagnetic stirring (IC-AEMS) method, a new technology of rheological die forging is developed in this paper, and the scale-reduced parts of a brake hub of Al-6.54Zn-2.40Cu-2.35Mg-0.10Zr aluminum alloy were prepared. The influence of IC-AEMS and the addition of rare element Sc on the structure and mechanical properties of the parts was studied. An optical microscope and scanning electron microscope (SEM) were used to observe the microstructure evolution, energy dispersive spectroscopy (EDS) was used to analyze the phase distribution and composition, and the mechanical properties of the parts were tested by uniaxial tensile tests. The results show that the addition of Sc element can effectively refine the grains and improve the strength and elongation of the material; the application of IC-AEMS improves the cooling rate of the melt, increases the effective nucleation rate, and the grains are further refined. Through process optimization, scale-reduced parts of a brake hub with good formability and mechanical properties can be obtained, the ultimate tensile strength is 597.2 ± 3.1 MPa, the yield strength is 517.8 ± 4.3 MPa, and the elongation is 13.7 ± 1.3%.     

胃大部切除术后3年胃癌患者生活质量的EORTC QLQ-C30与QLQ-STO22联合评价

目的:采用欧洲癌症研究与治疗组织(EORTC)生活质量核心30问卷调查(QLQ-C30)和QLQ-STO22评价胃癌术后3年患者的生活质量(QOL).方法:对96名胃大部切除术后3年的胃癌患者和90名年龄和性别相匹配的门诊体检健康者进行研究.胃癌患者和健康者平均年龄分别为53.2岁±8.1岁和54.8岁±7.9岁.88.5%患者为I期胃癌术后.患者自行完成QLQ-C30量表和QLQ-STO22量表,对各评分进行统计分析.结果:胃癌患者和健康者EORTC QLQ-C30整体健康状况和QOL评分无显著差异.胃癌患者的认知功能、情绪功能和疲劳要优于对照健康者.但胃癌患者恶心和呕吐评分、经济困难、反流、进食受限和体型评分较健康者差.其他评分未见显著差异.结论:胃癌术后3年,患者的QOL整体评分基本恢复至正常水平,但在某些方面,特别是与上消化道相关的症状(如恶心呕吐、反流、进食受限等)与健康者存在差距.有必要基于这些差异采取针对性的措施进行治疗和护理.