氧力宝杀菌效果及稳定性与腐蚀性的检测

氧力宝为一种二氧化氯消毒剂 ,为了解其杀菌效果及稳定性与腐蚀性 ,在实验室内对其进行了杀菌效果及稳定性与金属腐蚀性检测。结果 ,以含二氧化氯 15 mg/L溶液对悬液中大肠杆菌作用 8min,对悬液中的金黄色葡萄球菌以含 2 0 mg/L溶液作用 8min,杀灭率均为 10 0 %。未加酸活化的该剂于 5 4℃放置 14 d,二氧化氯含量下降率为 6 .3%。该剂含二氧化氯 15 0 mg/L 溶液对不锈钢、铜、碳钢、铝的腐蚀速率分别为 0 .0 12 3,0 .0 2 2 7,0 .0 2 97,0 .0 15 3mm/a。该消毒剂为杀菌效果、稳定性较好 ,对金属有轻度腐蚀作用的消毒剂     

博谱洁净消毒液性能试验结果分析

目的 :观察博谱洁净消毒液灭菌效果与储存稳定性等。方法 :用不同浓度消毒液作用于选定菌种及试验物进行试验。结果 :含有效 1 0 0 0mg/L ,对枯草杆菌黑色变种芽胞的杀灭率达 1 0 0 .0 0 % ;作用2 0min可完全破坏HBsAg抗原性 ;对不锈钢片无腐蚀作用 ,对铝、铜、碳钢均有不同程度的腐蚀性 ;含有效氯 30 0mg/L ,作用 5min ,模拟现场食 (饮 )具有大肠杆菌杀灭 1 0 0 .0 0 % ;含有效氯 2 5mg/L ,对金黄色葡萄球菌、大肠杆菌杀灭率达 99.90 %以上 ;原液在 5 4℃、RH >75 % ,放置 1 4d ,有效氯下降率为 2 7.64%。结论 :博谱洁净消毒液杀菌效果好 ,使用浓度低 ,作用时间短 ,优于戊二醛、过氧乙酸等消毒剂     

十二烷基二甲基苄基氯化铵性能的试验观察

目的 :十二烷基二甲基苄基氯化铵为无色透明液体 ,原液 p H6 .6 5。为了解其杀灭微生物效果及影响因素、稳定性与腐蚀性 ,进行了载体定量杀菌试验、热稳定性试验及金属腐蚀性试验。结果 :在 19～ 2 1℃ ,以含十二烷基二甲基苄基氯化铵 2 0 0 0 m g/L 稀释液对布片上金黄色葡萄球菌和大肠杆菌分别作用 4min,以含十二烷基二甲基苄基氯化铵 5 0 0 0 mg/L 稀释液对布片上白色念珠菌作用 8m in,杀灭率均达 99.90 %以上。杀菌效果因作用温度降低而下降 ,在溶液 p H为 4.11～ 8.10时无明显变化。该样品于 5 4℃恒温箱中放置 14d,下降率为 1.12 4%。含十二烷基二甲基苄基氯化铵 10 0 0 0 mg/L 的稀释液对不锈钢、铜和铝基本无腐蚀 ,对碳钢有轻度腐蚀。结论 :该消毒剂为杀菌效果较好、性质稳定、对金属腐蚀性较小的消毒剂。     

一种二氧化氯消毒剂性能的实验观察

以悬液定量杀菌试验法对一种二氧化氯消毒剂的杀菌效果进行了试验观察。以含300mg/L二氧化氯溶液对枯草杆菌黑色变种芽胞作用15min或400mg/L作用10min杀灭率为100%;50%小牛血清对其杀菌作用有明显的影响;该消毒剂(原液)置 54~57℃下14d,二氧化氯含量下降率为2.59%;对金属腐蚀性试验以含400mg/L二氧化氯浸泡72h,除对不锈钢无腐蚀作用外,对碳钢有重度腐蚀作用,对铜、铝有中度腐蚀作用。     

稳定性二氧化氯杀菌效果的实验观察

目的 了解稳定性二氧化氯消毒剂杀菌效果。方法 应用悬液定量杀灭微生物试验。结果 以含二氧化氯15mg／L溶液对大肠杆菌作用5分钟、50mg／L对白色念珠菌作用3分钟、200mg/L对枯草杆菌黑色变种芽孢作用10分钟的杀灭率均达100％。结论 该消毒剂对实验菌有杀灭效果，杀菌效果随二氧化氯浓度增加、作用时间延长而增强。     

复方三氯异氰尿酸消毒剂杀菌效果的检测

目的:探讨由三氯异氰尿酸及其分解剂、抗干扰剂等制成的白色泡腾片,含有效氯41.20%。方法:在实验室内对其水溶液进行了载体定量杀菌试验及擦拭消毒物体表面。结果:用其含有效氯100mg/L溶液对布片上大肠杆菌作用1min,以其含有效氯1000mg/L溶液对布片上枯草杆菌黑色变种芽孢作用15min,平均杀灭率均为99.99%;前者作用3min,后者作用30min,杀灭率均为100%,用其含有效氯100mg/L溶液擦拭桌面、台面、门把手后作用3min,可使自然菌减少≥90.00%。结论:复方三氯异氰尿酸消毒剂杀菌效果好。     

使用消毒剂对埃尔托弧菌杀灭效果及应用研究

目的:为了解8种消毒剂杀灭埃尔托(Eltor)弧菌效果和指导消毒实践,采用能量试验和模拟现场试 验,对8种消毒剂进行了实验室观察。结果,能量试验测出各种消毒剂最低有效杀菌浓度分别为:复方消毒剂溶液 体积分数37．5％、新洁灵300mg/L、次氯酸钠和次氯酸钙有效氯均为200mg/L、过氧乙酸100mg/L、腆伏有效 碘100mg/L。模拟现场试验结果,完全杀灭泥土载体中埃尔托弧菌所需各种消毒剂剂量分别为:TCIOI有效氯 300mg/L作用3min、消洗灵有效氯600mg/L作用5min、次氯酸钠有效氯500mg/L作用5min、过氧乙酸300mg/L 作用1min;完全杀灭田土载体中埃尔托弧菌所需各种消毒剂剂量均高于泥土中所需剂量;使用次氯酸钠杀灭河水 中埃尔托弧菌需用有效氯20mg/L作用60min;完全杀灭医院污水中埃尔托弧菌需用次氯酸钠有效氯100mg/L作 用60min。     

二氯一溴异氰尿酸杀菌效果的试验观察

对所研制的二氯一溴异氰尿酸进行了杀菌效果观察。结果表明,以二氯一溴异氰尿酸含20mg/L有效氯溶液对大肠杆菌作用10min。以含10mg/l有效氯溶液对金黄色葡萄球菌作用5min,以含100mg/L有效氯溶液对枯草杆菌黑色变种芽胞作用10min,杀灭率达100％。用含100mg/L有效氯溶液的棉球擦拭人民币表面并作用2min,对其自然菌杀灭率达97.78％。     

使用消毒剂对埃尔托弧菌杀灭效果及应用研究

目的:为了解8种消毒剂杀灭埃尔托(Eltor)弧菌效果和指导消毒实践,采用能量试验和模拟现场试验,对8种消毒剂进行了实验室观察。结果:能量试验测出各种消毒剂最低有效杀菌浓度分别为:复方消毒剂溶液体积分数37.5%、新洁灵300mg/L、次氯酸钠和次氯酸钙有效氯均为200mg/L、过氧乙酸lOOmg/L、腆伏有效碘100mg/L。模拟现场试验结果,完全杀灭泥土载体中埃尔托弧菌所需各种消毒剂剂量分别为:TClOl有效氯300mg/L作用3min、消洗灵有效氯600mg/L作用5min、次氯酸钠有效氯500mg/L作用5min、过氧乙酸300mg/L作用lmin;完全杀灭田土载体中埃尔托弧菌所需各种消毒剂剂量均高于泥土中所需剂量;使用次氯酸钠杀灭河水中埃尔托弧菌需用有效氯20mg/L作用60min;完全杀灭医院污水中埃尔托弧菌需用次氯酸钠有效氯100mg/L作用60min。     

三氯异氰尿酸对微生物杀灭效果的试验观察

对所研制的三氯异氰尿酸进行了杀菌效果观察。结果表明,以三氯异氰尿酸含25mg/L有效氯溶液对大肠杆菌作用15min,以含25mg/L有效氯溶液对金黄色葡萄球菌作用10min,以含250mg/L有效氯溶液对枯草杆菌黑色变种芽胞作用10min,杀灭率达100％。用含250mg/L有效氯溶液的棉球擦拭人工污染大肠杆菌的实验台面并作用2min,对大肠杆菌杀灭率达98.35%。     

Value of D-Dimers in patients with acute aortic dissection

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.     

Research of combined liver-kidney transplantation model in rats

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.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

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.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

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.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

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.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

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.