W/O/W型薄荷油复乳的制备及其性质初步研究

目的制备薄荷油W/O/W型复乳,并对其性质进行初步研究。方法采用二步法制备薄荷油W/O/W型复乳,对其物理性质如:外观、显微形态、乳剂类型、粘度、表面张力、相变温度、物理稳定性等方面进行初步研究。结果薄荷油W/O/W型复乳外观呈白色、外相能被曙红指示液染色、室温下的粘度为15.2 mPa.S,表面张力为30×10-3N.m-1,相变温度为84℃。结论二步法制备薄荷油W/O/W型复乳物理稳定性较好。     

The small molecular mass antifungal protein of Penicillium chrysogenum--a mechanism of action oriented review

The β-lactam producing filamentous fungus Penicillium chrysogenum secretes a 6.25 kDa small molecular mass antifungal protein, PAF, which has a highly stable, compact 3D structure and is effective against a wide spectrum of plant and zoo pathogenic fungi. Its precise physiological functions and mode of action need to be elucidated before considering possible biomedical, agricultural or food technological applications. According to some more recent experimental data, PAF plays an important role in the fine-tuning of conidiogenesis in Penicillium chrysogenum. PAF triggers apoptotic cell death in sensitive fungi, and cell death signaling may be transmitted through two-component systems, heterotrimeric G protein coupled signal transduction and regulatory networks as well as via alteration of the Ca(2+) -homeostasis of the cells. Possible biotechnological applications of PAF are also outlined in the review.     

History of lasers

The developments of laser technology from the cradle of modern physics in 1900 by Planck to its latest medical boundaries is an exciting example of how basic physics finds its way into clinical practice. This article merits the protagonists and their contribution to the steps in this development. The competition between the different research groups finally led to the award of the Nobel Prize to Townes, Basov and Prokhorov in 1964 for the scientific basis on quantum electronics, which led to the construction of oscillators and amplifiers based on the laser-maser principle. Forty-three years after Einstein’s first theories Maiman introduced the first ruby laser for commercial use. This marked the key step for the laser application and pioneered fruitful cooperations between basic and clinical science. The pioneers of lasers in clinical urology were Parsons in 1966 with studies in canine bladders and Mulvany 1968 with experiments in calculi fragmentation. The central technological component for the triumphal procession of lasers in urology is the endoscope. Therefore lasers are currently widely used, being the tool of choice in some areas, such as endoscopical lithotriptic stone treatment or endoluminal organ-preserving tumor ablation. Furthermore they show promising treatment alternatives for the treatment of benign prostate hyperplasia.     

Numerical Simulation of Thrombus Aspiration in Two Realistic Models of Catheter Tips

Thrombus aspiration catheters are devices used to remove a blood clot from a vessel, usually prior to angioplasty or stent implantation. However, in vitro results showed that the use of different commercial devices could produce very different thrombus removals, suggesting a primary dependence on the distal tip configuration of the catheter. A computational methodology based on realistic catheter tip modeling was developed to investigate the factors affecting the thrombus suction. Two different designs were considered, either with a single central lumen or a combination of central and side holes. First, steady‐state aspiration of distilled water from a reservoir was simulated and compared with experimental tests. Subsequently, the aspiration of a totally occlusive thrombus, modeled as a high viscous fluid, was simulated solving a complex two‐phase (blood and thrombus) problem. In particular, the benefit of additional openings was investigated. Good matching between the steady‐state experimental and numerically simulated hydraulic behaviors allowed a validation of the numerical models. Numerical results of thrombus aspiration showed that the catheter with central and side holes had a worse performance if compared with the single central lumen catheter. Indeed, the inlets in contact with both blood and thrombus preferentially aspirate blood due to its much lower viscosity. This effect hindered the aspiration of thrombus. The amount of aspirated thrombus highly depends on the complex, two‐phase fluid dynamics occurring across the catheter tips. Results suggested that location of additional holes is crucial in the catheter aspiration performance.     

西医降压降糖配合中医辨证治疗糖尿病合并高血压病随机对照临床研究

[目的]观察西医降压降糖配合中医辨证治疗糖尿病合并高血压病疗效。[方法]选取2009年1月至2011年1月我院收治的156例患者,按照随机数字表法,分为治疗组和对照组,每组78例。对照组接受基础治疗和西医降压降糖治疗,治疗组在此基础上接受中医辨证治疗。两组均连续治疗2个月判定疗效。[结果]治疗组总有效率为94.90%,对照组总有效率为79.50%,治疗组临床疗效优于对照组(P<0.05)。[结论]西医降压降糖配合中医辨证治疗糖尿病合并高血压病疗效满意。     

三维超声测量胆囊体积的探讨

目的　评价三维超声测量胆囊体积的准确性。方法　用二维、三维超声测量不同充盈度的离体猪胆囊和 80例成人脂餐前后胆囊的体积 ,比较二维、三维超声的准确性。结果　三维超声测量不规则形离体、成人胆囊体积的准确性分别为 10 4.7%和 97.9%。结论　三维超声测量不规则胆囊体积较二维超声准确