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1.
首先采用自由基溶液聚合法,合成了甲基丙烯酸-甲基丙烯酸羟乙酯-烯丙基聚氧乙烯醚(MAA-HEMA-APEG)无规共聚物,然后以缩水甘油醚氧丙基三甲氧基硅烷(KH560)为交联剂,使共聚物与其进行交联反应得到防雾涂层。通过傅里叶红外光谱(FT-IR)、核磁共振氢谱(1H-NMR)和差示扫描量热法(DSC)对共聚物结构和热性能进行了表征,对防雾涂层的接触角、耐水性能、透光率和防雾性能进行了评价。结果表明,当n(MAA):n(HEMA):n(APEG)=2:8:0.1且KH560的质量分数为5% 时,涂层具有优异的亲水性和耐水溶胀性,且材料的透光率几乎不会受到影响。  相似文献   

2.
目的探讨碘伏擦拭法用于腹腔镜镜头防雾的效果。方法将80例腹腔镜手术患者随机分为两组。实验组40例为碘伏擦拭法组,洗手护士上台后,用碘伏纱布擦拭镜头来进行防雾。对照组40例为大网膜擦拭法组,腹腔镜镜头进入腹腔后,在大网膜上擦拭镜头。比较两组防雾效果及意外情况发生率的差异。结果两种防雾方法均有效,防雾措施在30 min内比在30 min后效果好,通过对照组和实验组意外发生情况的比较,术中出血导致镜头擦拭不净例数较多。反复擦拭不净延误手术进程。结论用碘伏擦拭法进行腹腔镜镜头防雾,其安全性、有效性较目前采用的其他方法效果更好。  相似文献   

3.
透明基材防雾涂膜的研究进展   总被引:1,自引:0,他引:1  
防雾涂膜广范适用于工农业生产和民用生活中,用于透明基材的防雾涂膜是当前研究的热点。国内外制备防雾涂膜的方法较多,如化学气相沉积法、液相沉积法和溶胶-凝胶法等。本文综述了防雾机理、防雾涂膜的制备方法、制备条件以及研究近况与发展前景。  相似文献   

4.
新型玻璃防雾剂的制备及性能   总被引:4,自引:0,他引:4  
目的 研制一种用于玻璃表面的新型防雾剂。方法 防雾剂由含金属含氧酸盐的基础液及含表面活性剂的添加剂混合而成。考察了其防雾效果及透光率,并与现有产品进行了比较。结果 本防雾剂防雾效果持久,不影响玻璃的透光率。结论 本防雾剂配方简单,容易生产,防雾性能优于其他产品。  相似文献   

5.
尹迎春 《中外医疗》2014,(29):31-32
目的探讨稀释络合碘防雾效果的可行性、最佳浓度及防雾成本效益。方法 2012年1月—2013年1月选择该院做鼻内镜手术的患者1 500例,随机按络合碘原液(天顶奇龙牌络合碘)、10%、20%、40%、80%络合浓度擦拭效果进行比较,各500例,再选用最佳稀释浓度络合碘与防雾油进行擦拭效果比较。结果 1浓度为40%的稀释络合碘对鼻内窥镜有良好的防雾效果。240%浓度的稀释络合碘与防雾油对鼻内窥镜的防雾效果差异无统计学意义。3稀释络合碘与防雾油在成本上差异有统计学意义。结论 40%浓度的稀释络合碘对鼻内窥镜有良好的防雾效果;与防雾油相比对鼻内窥镜的防雾效果差异无统计学意义,但稀释络合碘的成本远低于防雾油,因此值得推广应用。  相似文献   

6.
钟少敏  陈捷   《中国医学工程》2013,(2):30-30,32
目的探讨腹腔镜手术中镜面防雾的最佳方法。方法将120例腹腔镜手术患者镜面防雾随机分为碘伏组(n=60)和盐水加热组(n=60),比较2组维持镜头防雾时间。结果维持镜头防雾时间>30min:碘伏组为45例,盐水加热组23例,2组比较χ2值=16.4253,P<0.01,有统计学差异。结论碘伏液擦拭腹腔镜,不仅镜面防雾效果好,且取材及操作方便。  相似文献   

7.
目的在透明玻璃基板上通过直接火焰气溶胶沉积和原位退火快速合成水稳定性、透明防雾SiO2,TiO2,SiO2-TiO2涂层。方法联合使用火焰喷雾热分解反应器与基片支架合成和涂层沉积TiO2,SiO2-TiO2和SiO2纳米结构于7.5 cm×2.5 cm的玻璃基板上。结果在无预处理的情况下在玻璃基板用包含硅前体的HMDSO或TEOS等FSP溶液制备了直径为10~15 nm和长度为数十至数百纳米长的SiO2纳米纤维或纳米线。结论该制备工艺可行性好,质量控制方法简便、可靠。  相似文献   

8.
腹腔镜手术,保持术中视野的清晰是手术顺利开展的前提。而保证视野清晰,镜头的防雾处理是必不可少的。为使腹腔镜镜头防雾方法达到简便、安全、有效的目的,现将我们4588例腹腔镜手术的防雾处理方法总结报告如下。  相似文献   

9.
目的研制一种防雾时间长、透明无毒、无刺激性的鼻内窥镜防雾剂。方法采用正交试验制得27种配比不同的无色透明、无刺激性鼻内窥镜防雾剂,pH7~8。采用Storz00鼻内镜及显像系统按照鼻内窥镜手术时方式对受试者进行防雾剂防雾测试3次,取平均值即为防雾时间,对同一受试者同时将医用安尔碘、95%酒精作为鼻内镜防雾剂测试3次。结果所研制的鼻内镜防雾剂其最佳配比为:无水乙醇为20%,丙二醇为10%,月桂醇聚氧乙烯醚为20%,十二烷基硫酸钠4%,聚乙二醇4%,余为去离子水,其防雾时间为15 min,明显较医用安尔碘(4 min)、95%酒精(18 s)防雾时间长。结论研制的鼻内镜防雾剂透光度好,无色,安全,防雾时间长,其原因是防雾剂在鼻内窥镜镜头蓝宝石表面形成一层透明均匀的膜。  相似文献   

10.
目的 了解超疏水薄膜表面的防雾性能.方法 以玻璃为基底,采用溶胶凝胶法,以丙烯酸诱导正硅酸乙酯(TEOS)相分离并自组装硅烷偶联剂的方法制备透明超疏水薄膜,采用SEM、UV-Vis以及接触角测试对薄膜进行表征,并与清洁玻璃基片及涂疏水液的基片进行对照,比较该薄膜的防雾效果.结果 薄膜表面的微观结构呈弹坑状,水滴在此表面上的接触角为153°,具有超疏水特性;涂敷了超疏水薄膜的玻璃在可见光区间的透光度值约为60%~75%,超疏水薄膜的防雾性能要好于清洁玻璃基片及涂疏水液基片.结论 超疏水薄膜具有一定的防雾性能,接触角越大防雾性能越好.  相似文献   

11.
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P< 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P< 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.  相似文献   

12.
Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P < 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (>0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P <0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P < 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.  相似文献   

13.
Objective: To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods: SD rats served as both donors and recipients. 4℃ sodium lactate Ringer's was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava (IVC) inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results: Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion: This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.  相似文献   

14.
Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.  相似文献   

15.
Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.  相似文献   

16.
A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care(~'4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes.  相似文献   

17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.  相似文献   

18.
Journal of Nanjing Medical University (English Edition) JNMU, sponsored by Nanjing Medical University, was established in 1987. It is a bimonthly comprehensive English medical journal published locally and abroad.Since 2007, Journal of Nanjing Medical University (English Edition )was granted Elsevier the full publishing and distribution rights worldwide for the Electronic Edition, excluding the People's Republic of China.  相似文献   

19.
FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…  相似文献   

20.
目的:评价使用安心颗粒对急诊经皮冠状动脉介入术(PPCI)术后生活质量的影响.方法:将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组(术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次)和对照组(仅接受基础药物治疗).所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表(MIDAS)、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果:入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异(P>0.05);出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低(P<0.05);组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低(P<0.05).两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血(P>0.05).两组发生轻度血小板减少症的患者数比较无差异(P>0.05).结论:PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.  相似文献   

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