一种新型脑棉片保存与清点袋的研制及应用于手术的效果评价

目的 探究了新型脑棉片保存与清点袋在神经外科手术的效果运用。方法 回顾和分析了我院2013年-2015年的神经外科手术60例,按随机数字表法分为实验组（30例）,对照组（30例）。实验组选用新型脑棉片保存与清点袋;对照组选用传统折叠式脑棉片保存包装。观察比较两组患者术中台面整理时间及脑棉片清点时间、手术台面污染情况及因清点不清暂停手术次数、估算术中出血量所用时间、脑棉片回收利用情况、护理人员工作满意度调查结果。结果 实验组在术中台面整理时间及脑棉片清点时间、手术台面污染情况及因清点不清暂停手术次数明显少于对照组。两组术中出血量平均估算值差别不大,但估算花费时间实验组少于对照组。在脑棉片回收利用情况中,脑棉片平均散落数、散落脑棉片平均变形数,实验组明显少于对照组,可消毒回收平均脑棉片数实验组大于对照组。实验组护理人员工作满意度明显优于对照组。结论 运用新型脑棉片保存与清点袋于神经外科手术中,可减少术中台面整理时间及脑棉片清点时间,改善手术台面污染情况,降低因清点不清暂停手术次数,便于估算出血量,在一定程度上提升了护理人员工作满意度,值得临床推广运用。     

FESS术后应用纳吸绵与膨胀海绵鼻腔填塞疗效比较

目的观察纳吸绵(NasoPore)和膨胀海绵(Merocel)在功能性鼻内窥镜(FESS)术后填塞的疗效对比。方法将92例功能性鼻窦内窥镜术后患者分为NasoPore组和Merocel组。术后分别置入鼻腔纳吸绵和膨胀海绵行填塞止血,观察两组患者术后疼痛率、出血率以及术腔恢复情况比较。结果 (1)NasoPore组疼痛率和出血率分别为80.43%和26.09%;Merocel组则为95.65%和66.30%;(2)在中鼻通粘连与筛窦内囊泡的方面,NasoPore组(23.91%)低于Merocel组(48.91%)。结论在FESS术中应用纳吸绵填塞能更有效的缓解患者术后疼痛、减少术区出血,因其可降解、无需抽取、减轻患者痛苦及减轻术区粘膜水肿,值得临床推广。     

自制洛美沙星滴耳液棉片贴补法治疗外伤性鼓膜穿孔的疗效

目的探讨用自制洛美沙星滴耳液棉片贴补法及微波理疗治疗外伤性鼓膜穿孔的疗效。方法选取2007年8月—2011年6月在昌黎县人民医院院就诊的162例外伤性鼓膜穿孔患者,按数字随机法分成A(81例)和B组(81例)。A组采用自制洛美沙星滴耳液棉片贴补法及微波理疗治疗,B组采用传统治疗方法,比较两组疗效。结果 A组治愈78例,治愈率96.3%;B组治愈64例,治愈率79.01%,两组差异具有统计学意义(P0.05)。结论采用自制洛美沙星滴耳液棉片贴补法及微波理疗治疗外伤性鼓膜穿孔,可以提高治愈率,疗效确切。     

Partitioned expression of duplicated genes during development and evolution of a single cell in a polyploid plant

Polyploidy is an important driver of eukaryotic evolution, evident in many animals, fungi, and plants. One consequence of polyploidy is subfunctionalization, in which the ancestral expression profile becomes partitioned among duplicated genes (termed homoeologs). Subfunctionalization appears to be a common phenomenon insofar as it has been studied, at the scale of organs. Here, we use a high-resolution methodology to investigate the expression of thousands of pairs of homoeologs during the development of a single plant cell, using as a model the seed trichomes ("cotton fiber") of allopolyploid (containing "A" and "D" genomes) cotton (Gossypium). We demonstrate that approximately 30% of the homoeologs are significantly A- or D-biased at each of three time points studied during fiber development. Genes differentially biased toward the A or D genome belong to different biological processes, illustrating the functional partitioning of genomic contributions during cellular development. Interestingly, expression of the biased genes was shifted strongly toward the agronomically inferior D genome. Analyses of homoeologous gene expression during development of this cell showed that one-fifth of the genes exhibit changes in A/D ratios, indicating that significant alteration in duplicated gene expression is fairly frequent even at the level of development and maturation of a single cell. Comparing changes in homoeolog expression in cultivated versus wild cotton showed that most homoeolog expression bias reflects polyploidy rather than domestication. Evidence suggests, however, that domestication may increase expression bias in fibers toward the D genome, potentially implicating D-genome recruitment under human selection during domestication.     

Low Stress Mechanical Properties of Plasma-Treated Cotton Fabric Subjected to Zinc Oxide-Anti-Microbial Treatment

Cotton fabrics are highly popular because of their excellent properties such as regeneration, bio-degradation, softness, affinity to skin and hygroscopic properties. When in contact with the human body, cotton fabrics offer an ideal environment for microbial growth due to their ability to retain oxygen, moisture and warmth, as well as nutrients from spillages and body sweat. Therefore, an anti-microbial coating formulation (Microfresh and Microban together with zinc oxide as catalyst) was developed for cotton fabrics to improve treatment effectiveness. In addition, plasma technology was employed in the study which roughened the surface of the materials, improving the loading of zinc oxides on the surface. In this study, the low stress mechanical properties of plasma pre-treated and/or anti-microbial-treated cotton fabric were studied. The overall results show that the specimens had improved bending properties when zinc oxides were added in the anti-microbial coating recipe. Also, without plasma pre-treatment, anti-microbial-treatment of cotton fabric had a positive effect only on tensile resilience, shear stress at 0.5° and compressional energy, while plasma-treated specimens had better overall tensile properties even after anti-microbial treatment.     

蜗牛酶在聚(N-异丙基丙烯酰胺)中的固定化及应用

将蜗牛酶固定到聚(N—异丙基丙烯酰胺)上得到一种热可逆的固定化酶。研究了固定化酶的性能和对几种不同底物的作用情况。结果表明蜗中酶对羧甲基纤维素钠、甲壳胺和可溶性棉花都有较好的降解活性。     

巯基棉富集—火焰原子吸收法测定饮用水中镉铜铅的研究

采用巯基棉富集—火焰原子吸收法测定饮用水中镉、铜和铅，就其富集酸度、洗脱液及其温度进行了探讨。此法简单，快速，线性范围镉和铜是０．００４～０．０４μｇ／ｍｌ，铅是０．１～１．０μｇ／ｍｌ；相关系数镉０．９９９１，铜０．９９９６，铅０．９９９９；回收率镉９６．９％～１０５．０％，铜９８．１％～１０１．３％，铅１００．０％～１０１．０％；变异系数镉３．５％，铜１．７６％，铅５．２５％。     

无毒棉籽液抗腹泻作用机理

小鼠灌胃给予无毒棉籽３，６ｇ／ｋｇ对蓖麻油、硫酸钠致腹泻有拮抗作用，对正常小鼠及生大黄泻下鼠的肠腔水分无影响；对新斯的明、酚妥拉明所致小肠运动亢进有明显抑制作用，对阿托品致小肠运动减弱有协同作用．无毒棉籽抗泻下的机制可能与抑制副交感神经的兴奋有关     

Endotoxins in cotton: Washing effects and size distribution

Endotoxin contamination was measured in washed and unwashed cottons from three distinct growing areas, California, Mississippi, and Texas. The data show differences in endotoxin contamination based upon the geographic source of the cotton. It is also shown that washing bulk cotton before the carding process results in lower endotoxin in the cotton dust. Washing conditions can affect the endotoxin levels, and all size fractions of the airborne dust contain quantifiable endotoxin contamination. Endotoxin analyses provide a simple and reliable method for monitoring the cleanliness of cotton or airborne cotton dusts.