电感耦合等离子体原子发射光谱法测定石英岩中杂质元素

采用氢氟酸-硝酸溶解试样,电感耦合等离子体原子发射光谱法测定石英岩中铝、钙、铁、钾、镁、锰、钠、磷、钛等常见杂质元素。方法回收率95%~105%,相对标准偏差（RSD,n=9）小于5%,经石英岩国家标准物质验证,测定值与认定值无明显差异。方法简单、快速、准确,可用于大批量石英岩试样的测定。     

低温等离子体技术及其环境工程应用

介绍了低温等离子体的产生方法,阐述了该技术在环境工程中的应用现状,并指出今后的低温等离子体发展的方向．     

Tear osmolarity is sensitive to exercise-induced fluid loss but is not associated with common hydration measures in a field setting

This investigation (i) examined changes in tear osmolarity in response to fluid loss that occurs with exercise in a field setting, and (ii) compared tear osmolarity with common field and laboratory hydration measures. Sixty-three participants [age 27.8 ± 8.4 years, body mass 72.15 ± 10.61 kg] completed a self-paced 10 km run outside on a predetermined course. Body mass, tear fluid, venous blood and urine samples were collected immediately before and after exercise. Significant (p < 0.001) reductions in body mass (1.71 ± 0.44%) and increases in tear osmolarity (8 ± 15 mOsm.L^?1), plasma osmolality (7 ± 8 mOsm.kg^?1), and urine specific gravity (0.0014 ± 0.0042 g.mL^?1; p = 0.008) were observed following exercise. Pre- to post-exercise change in tear osmolarity was not significantly correlated (all p > 0.05) with plasma osmolality (r_s = 0.24), urine osmolality (r_s = 0.14), urine specific gravity (r_s = 0.13) or relative body mass loss (r = 0.20). Tear osmolarity is responsive to exercise-induced fluid loss but does not correlate with the changes observed using other common measures of hydration status in the field setting. Practitioners shouldn’t directly compare or replace other common hydration measures with tear osmolarity in the field.

Abbreviations: BML: Body Mass Loss; CV: Coefficient of Variation; P_osm: Plasma osmolality; SD: Standard Deviation; T_osm: Tear Osmolarity; U_osm: Urine Osmolality; USG: Urine Specific Gravity; WBGT: Wet bulb globe thermometer     

冷上清在治疗TTP患者中的作用

分别对无偿自愿献血者的新鲜血浆及冷上清进行留样,并检测其中凝血因子FVIII、FIX、FV、FVII、Fbg及总蛋白含量.检测结果进行统计学分析（t检验）.冷上清中FVIII含量为（0.35±0.13）IU/mL;FIX含量为（0.61±0.15）IU/mL;FV含量为（0.93±0.18）IU/mL;FVII含量为（1.06±0.35）IU/mL;Fbg含量为（142.41±37.77）mg/dL;TP含量为（62.90±5.01）g/L.新鲜冰冻血浆中FVIII、FV、Fbg含量与冷上清中FVIII、FV、Fbg含量相比较,均为P〈0.01,有极显著差异.新鲜冰冻血浆中FIX、FVII、TP含量与冷上清中FIX、FVII、TP含量相比较,均为P〉0.05,无显著差异.结果表明,冷上清中含不稳定因子FV、FVIII,但其含量与新鲜冰冻血浆相比较低.用冷上清对TTP患者行血浆置换后,可使患者凝血系统恢复正常,病情明显好转.     

保卫细胞质膜转运蛋白与气孔运动关系研究

近些年研究表明，保卫细胞质膜上存在多种转运蛋白，这些特殊结构是保卫细胞离子出入，信号导等生理过程的重要调控机构。研究保卫细胞质膜转运蛋白特性、功能与气孔运动的关系对于认识气孔运动机理，调控气孔运动等有重要意义。     

烟气中SO_2,NO_x脱除的新技术——膜、电化学及高能辐射等技术

综述了近年发展起来的脱除烟道气中SO_2及NO_x的新技术,包括典型膜技术、电化学技术和结合化学反应的高能辐射技术(电子束照射、等离子体电晕放电等),经过不断改进,已有些达到小型工厂阶段,有非常诱人的前景。     

A direct measurement method of quantum relaxation time

The quantum relaxation time of electrons in condensed matters is an important physical property, but its direct measurement has been elusive for a century. Here, we report a breakthrough that allows direct determination of quantum relaxation time at zero and non-zero frequencies using optical measurement. Through dielectric loss function, we connect bound electron effects to the physical parameters of plasma resonance and find an extra term of quantum relaxation time from inelastic scattering between bound electrons and conduction electrons at non-zero frequencies. We demonstrate here that the frequency-dependent inelastic polarization effect of bound electrons is the dominant contribution to quantum relaxation time of conduction electrons at optical frequencies, and the elastic polarization effect of bound electrons also dramatically changes the plasma resonance frequency through effective screening to charge carriers.     

金刚石膜的制备方法及应用

简单介绍了金刚石膜的化学气相沉积的主要方法、应用及其最新进展,并对各种方法的优缺点作了简要说明。     

微波消解氢化物发生-ICP-AES测定广豆根中砷锑铋锡

建立了微波消解-氢化物发生-电感耦合等离子体发射光谱联用技术测定中药广豆根中砷、锑、铋和锡的方法,对微波消解、氢化物发生条件、电感耦合等离子体原子发射光谱工作条件进行了优化,预还原剂L-半胱胺酸浓度进行了选择。在最佳工作条件下,砷、锑、铋和锡的检出限分别为0.0055μg.g-1、0.0088μg.g-1、0.0026μg.g-1和0.005 4μg.g-1;相对标准偏差分别为5.6%、2.0%、2.9%和2.6%(n=11);加标回收率分别为100%、90%、90%和110%。     

低温等离子体处理对高吸水性树脂吸水特性的影响

对高吸水树脂（SAP）在真空状态下（〈1 mmHg）进行了低温等离子体处理,分析结果表明,经过处理的树脂吸水率在较短时间处理时有所下降,但吸液率上升,在较长时间处理时,吸水率和吸液率均有不同程度的增加。在一定时间范围内,开放环境中的保水力有所增加。低温等离子体处理后,对甘草种子的毒性减少。