采用肝素钠抗凝血浆测定电解质可行性分析

目的:比较用电极直接法测定血清和肝素钠抗凝血浆电解质浓度的差异,探讨肝素钠抗凝血浆代替血清检测电解质的可行性。方法:用深圳航创9886型电解质分析仪测定患者血清和肝素钠抗凝血浆的电解质浓度并进行统计分析。结果:血浆与血清钾、钠测定结果差异具有统计学意义,血浆与血清氯测定结果差异无统计学意义,但血浆与血清钾、钠、氯的测定结果具的很好的相关性,相关性系数(r)均≥0.975,且两种标本钾、钠、氯测定值平均偏倚均没有超出1/2 CLIA’88允许误差。结论:行肝素钠抗凝血浆代替血清测定钾、钠、氯是可行的,但应建立相应的换算体系。     

The Plasma DNA Concentration as a Potential Breast Cancer Screening Marker

Increased levels of plasma DNA have frequently been noticed in the blood plasma of cancer patients. The possibility of using plasma DNA level as the indicator of tumor stage in breast cancer was investigated in plasma samples obtained from 100 breast cancer patients and 100 healthy women who were included as controls. Circulatory plasma free DNA was extracted from plasma samples and quantified by fluorometer. The median concentration of plasma DNA in the plasma samples from breast cancer patients classified by TNM staging system as stage I, II, III, IV and breast surgical patients were 0.5, 235, 422, 1,280 and 0.5 ng/ml, respectively. The level of plasma DNA in the stage II- IV group was significantly higher than those in the surgical group with breast cancer and control group (P value < 0.001). The plasma DNA concentration in stage II, III and IV of breast cancer were higher when compared with healthy group. These tumor size, TNM stage and metastasis were significantly correlated with plasma DNA. The cut point of 120 ng/ml was early screening and treatment follow up breast cancer.     

彩色海芋在上海地区引种栽培技术初探

春季种植时间越晚,彩色海芋的生育期越短,易使其品质下降。用适当的栽培基质可以生产出品质优良的切花和观赏价值高的盆花。合理密植可提高单位面积的切花产量而不会影响质量。合理应用生长延缓剂可使植株矮化,延长现蕾至开花的天数,提高盆花的观赏价值。细菌性软腐病是彩色海芋的主要病害,选用抗性强的品种、严格控制土壤条件、结合药剂防治等策略可以减少其发生。     

等离子体浸没N^＋离子注入豌豆种子的生理效应

报道了等离子体浸没Ｎ~＋注入豌豆种子后,引起幼苗过氧化物酶同工酶和酯酶同工酶的酶带数量和活性均起变化;过氧化物酶的变化与离子注入剂量有关．３５分钟处理的两种酶的同工酶酶谱变化最大．且种子萌发率明显下降．     

化学气相沉积法制备（类）金刚石薄膜专利技术分析

本文主要对化学气相沉积法制备(类)金刚石薄膜专利申请中专利申请的年度变化趋势、专利申请国家/地区布局、制备方法、申请人类型、专利技术改进方向、国内外主要申请人技术演进和发展等方面进行分析。研究表明,日本、美国等在该领域处于绝对领先地位,近年来国内的研究已取得了重大的进展,正在逐渐缩小与国外技术差距,切削加工和耐磨部件等应用领域是申请热点。     

亚波长金属光栅光刻条纹分布

亚波长金属光栅表面等离激元( SPP)具有光场局域增强、异常透射等现象,被广泛用于光刻。利用FDTD Solutions软件,改变金属光栅材料、周期、厚度等因素,通过有限时域差分方法探究表面等离共振光刻条纹分布特点。仿真结果表明,亚波长金属光栅光刻条纹分布周期是光栅的周期一半,光刻条纹强度在表面等离共振波长作用下也会大于入射光强度。该研究为微纳米光学器件的设计提供了依据。     

图书馆密集书库建设模式研究与实践--以柳州城市职业学院为例

图书馆飞速发展后,面临着有限空间无法存放无限图书的问题,建设密集书库可暂时解决此问题。密集书库的建设主要解决藏书量和图书定位问题,当前密集书库建设的模式有密集书架＋RFID、密集书架＋排架法（流水号排架、箱式排架、分类排架）、普通书架＋RFID、普通书架＋排架法（流水号排架、箱式排架、分类排架）,文章对不同的密集书库建设模式进行比较分析,并以柳州城市职业学院为例,对利用负一楼空间来建设密集书库进行了实践。     

Post prandial plasma glucose level less than the fasting level in otherwise healthy individuals during routine screening

During routine screening, some otherwise healthy individuals who showed remarkably lower post prandial (at 2 hour) plasma glucose without any symptom were subjected to extended glucose tolerance test and a few of them to extended post meal tolerance test as well. It was observed that post prandial (at 2 hour) plasma glucose after glucose administration was significantly lower than the fasting level (p<0.05−p<0.001). However, post prandial plasma glucose at 2 hour after their usual meal exhibited a significantly higher level than the fasting and post glucose level (p<0.05−p<0.001). Glucose appears to be a stronger agent than the more natural mixed meal in these individuals in causing post prandial lowering of plasma glucose. Hence, these individuals are to be evaluated with their usual meals before considering further investigations. Like upper limit, there is the need to have a consensus lower limit of reference interval of blood glucose level.     

正常淋浆对大鼠重症休克的干预作用

目的：探讨正常淋浆对肠系膜上动脉闭塞性（SMAO）休克及重症失血性休克的干预作用。方法：雄性Wistar大鼠90只均分为6组，夹闭肠系膜上动脉1h再灌注及颈动脉放血至40mmHg 1h复制SMAO休克和失血性休克模型，分别以小量淋浆及血浆治疗，模型组以等量生理盐水（NS）作对照，观察其血压及存活时间。结果：1．对SMAO休克的影响：淋浆组在休克70～120min血压显著高于模型组（P〈0．05）、在110～120min显著高于血浆组（P〈0．05）．而血浆组与模型组血压未见差异（P〉0．05）；淋浆组3h存活率显著高于其它两组（P〈0．05）。2．对失血性休克的影响：淋浆组输淋浆、输血后期直至停止输液后，血压始终保持在较高水平，且显著高于模型组（P〈0．05～0．01），输NS及停止输液后，血压显著高于血浆组（P〈0．05～0．01）；而血浆组血压仅于输血浆后5～10min高于模型组（P〈0．05）。淋浆组存活时间显著优于其它两组。结论：正常淋浆对SMAO休克及重症失血性休克均具有提升血压及延长存活时间的作用。