动力髋螺钉手术治疗股骨粗隆间骨折的临床效果分析

目的探讨动力髋螺钉手术治疗股骨粗隆间骨折的临床效果。方法对我院95例股骨粗隆间骨折患者采用DHS治疗。结果本组患者手术时间90～240min,平均140min,出血量100～600mL,平均220mL。均获得随访,随访时间为6～40个月,平均12个月。93例骨折均愈合,2例延迟愈合,与过早负重有关,限制活动后骨折愈合。平均愈合时间为3个月。完全负重时间为5个月,无伤口感染、褥疮、无骨不愈合、髋内翻发生,无螺钉穿出股骨头、退出、钢板断裂及变形。本组优75例,良18例,差2例,优良率为97.9%。结论DHS是治疗股骨粗隆间骨折内固定器械中的首选,手术时间短,内固定牢靠,减少了卧床并发症及髋内翻发生,缩短了住院时间,疗效可靠,值得临床推广应用。     

富马海松酸环氧树脂的制备及漆膜性能

通过松香(RA)与富马酸(FA)高温下的Diels-Alder反应合成了富马海松酸(FPA),并利用碳谱(13CNMR)、电喷雾质谱(ESI-MS)、红外光谱(IR)对其进行了表征;通过FPA与丁二醇二缩水甘油醚(BDGE)、己二醇二缩水甘油醚(HDGE)的酯化反应合成了松香基环氧树脂预聚体(FB、FH),测试了预聚体与固化剂不同配比下固化物的漆膜性能;结果表明,当n(活性氢)/n(环氧基)在1.0、1.2时,漆膜的硬度大于HB,附着力小于2级,T-弯实验小于2 T,耐冲击强度大于9.8 J,耐化学性能良好。     

Anti-Kasha Behavior of 3-Hydroxyflavone and Its Derivatives

Excited state intramolecular proton transfer (ESIPT) in 3-hydroxyflavone (3HF) has been known for its dependence on excitation wavelength. Such a behavior violates Kasha’s rule, which states that the emission and photochemistry of a compound would only take place from its lowest excited state. The photochemistry of 3HF was studied using femtosecond transient absorption spectroscopy at a shorter wavelength excitation (266 nm), and these new experimental findings were interpreted with the aid of computational studies. These new results were compared with those from previous studies that were obtained with a longer wavelength excitation and show that there exists a pathway of proton transfer that bypasses the normal first excited state from the higher excited state to the tautomer from first excited state. The experimental data correlate with the electron density difference calculations such that the proton transfer process is faster on the longer excitation wavelength than compared to the shorter excitation wavelength.     

The microencapsulation of terbinafine via in situ polymerization of melamine‐formaldehyde and their application to cotton fabric

In this study an antifungal pharmaceutical agent, terbinafine, was microencapsulated by using in situ polymerization. The polymerization was carried out at four mole ratio level and preparations were applied to the 100% cotton fabric. X‐ray diffractometry, DSC, FTIR, BET, contact angle measurements, particle size distribution and imaging techniques were performed. Best results were obtained in the case of 8 : 1 mole ratio. Strength of microcapsule applied fabrics to washing and fungus were also determined. After 25 washing cycle, microcapsules were still in the fabric and had antifungal properties against A. niger. Antifungal strength against T. rubrum was observed up to 15 washing cycles. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

The effect of cooking on Brassica vegetables

Assessing antioxidant intake requires a food antioxidant database. However, cooking may affect antioxidant content due to antioxidant release, destruction or creation of redox-active metabolites. Here, effects of boiling, steaming and microwaving of broccoli, cauliflower, cabbage and choy-sum (Chinese cabbage) were explored by measuring antioxidant contents of raw and cooked vegetables. Cooking water was also tested. For all cooked vegetables, antioxidant content was highest in steamed > boiled > microwaved, and decreased with longer cooking time, regardless of method. All steamed vegetables had higher antioxidant contents than had matching raw vegetables. Effects were variable for boiling and microwaving. Microwaving caused greater antioxidant loss into cooking water than did boiling. Marked losses of anitoxidants occurred in microwaved cabbage and spinach. To assess food antioxidant content/intake accurately, cooking effects need detailed study. Steaming may be the cooking method of choice to release/conserve antioxidants. The cooking water is a potentially rich source of dietary antioxidants.     

浅谈洞巴水电站施工成本管理

洞巴水电站施工项目成本管理中,依靠健全的制度化管理,走技术经济相结合的道路,不断进行制度和管理创新,较好地完成施工成本控制目标,为企业创造经济效益.     

SWMM模型在南宁心圩江设计洪水中的应用研究

随着城市化的快速发展,导致城市防洪排涝等问题显得越来越突出,受到各级政府和科学技术研究工作者的高度重视。文章以SWMM模型为基础,结合南宁心圩江实际资料,率定各有关参数,利用暴雨推求城市设计洪水,试图寻求适合城市排水设计新方法。     

用新《移民安置条例》给水电资源开发业主定位

水利水电资源开发业主,必须在工程移民过程中,遵循以人为本、依法开发、依法移民的原则,准确把握自身的定位,在工程移民各个环节上,演好"参与"的角色,同时,还要依靠与地方政府间的移民搬迁安置补偿协议,能动地协调与地方政府、部门以及移民之间的关系,有效地督促相关部门解决具体问题,才能圆满完成项目开发,按期实现资源的效益转换,使企业在获得良性的发展与积累的同时,推动地方经济的可持续发展,最终实现企地双方共赢的目标。     

长洲水利枢纽三线四线船闸下游设计最低通航水位的研究

以长洲水利枢纽附近测站水文资料、枢纽运行记录和数学模型论证结果为基础,通过分析枢纽下游水位流量关系的变化以及各种潜在影响因素,最后得出长洲水利枢纽三线四线船闸下游设计最低通航水位。     

玛湖凹陷二叠系上乌尔禾组扇三角洲沉积特征及控制因素

近年来,准噶尔盆地玛湖凹陷上二叠统砂砾岩储集体中获得重大油气勘探突破.为研究玛湖凹陷上乌尔禾组扇三角洲沉积特征及控制因素,开展了岩相分析、偏光显微镜鉴定、物性分析及成岩作用研究.结果表明:①上乌尔禾组砂砾岩储层自下而上粒度逐渐变细,砾石含量逐渐减少,为典型湖侵退覆式沉积.②上乌尔禾组发育3类11种岩相类型,不同岩相在成...