Results 91 to 100 of about 621,452 (179)
, 2007 采用ICP-OES,XRD,SEM,EDX和电导率在线监测等手段分析铬渣浸取前后的变化及各种元素浸出量随pH值的变化,考察了添加化学悬浮剂、浸取体系和超声处理对铬渣中Cr(Ⅵ)浸出行为的强化作用.结果表明,浸取过程基本不改变铬渣的结构;pH为5—7,使用合适的浸取介质有利于Cr(Ⅵ)的溶出,通过添加化学悬浮剂APG650可提高浸取效率3倍 ...
林晓 +4 more
core
“Low‐Positive” MOG‐IgG Cases Among Adults With a First Event Suggestive of Multiple Sclerosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To determine the prevalence and clinical characteristics of patients with “low‐positive” (LP) MOG‐IgG (titres 1:160–1:320) among adults with a first demyelinating event (FDE) suggestive of multiple sclerosis (MS). Methods From the Barcelona CIS inception cohort, we included adult patients with serum collected ≤ 6 months from the FDE.
Javier Villacieros‐Álvarez +29 more
wiley +1 more source
纳米多孔二氧化钛空心球的水热法制备及其对Cr(Ⅵ)的吸附特性
, 2011 利用水热法一步合成了TiO2.结构、形貌表征结果显示,所得产物为纯相锐钛矿型多孔空心结构,平均粒径为172nm.以此吸附剂对Cr(Ⅵ)的吸附实验结果表明,溶液pH对TiO2吸附性能影响显著,在pH为2.7时,产物最大吸附率为86%,随pH值升高,吸附率逐渐降低.其等温吸附行为很好地符合朗缪尔单分子层吸附模型,通过计算得到产物对Cr(Ⅵ)的理论最大单位吸附量为23mg/g.产物吸附Cr(Ⅵ)后,使用碱液可将吸附的Cr(Ⅵ)离子脱附,表现出了极好的重复使用性能.Cr(Ⅲ)共存对TiO2的Cr(Ⅵ ...
张星 +5 more
core
, 2011 In this study, removal of Cr(Ⅵ) from synthetic groundwater by adsorption onto commercial activated carbon (CAC) made up of coconut shell is investigated in batch studies.
Huan Zhen Zhang +2 more
core +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective To determine whether discontinuing anti‐CD20 therapy in people with relapsing‐onset MS aged over 50 is associated with an increased risk of relapse, inflammatory activity, confirmed disability accrual, and serious infection compared with continuing therapy.
Alexia Moukhine +40 more
wiley +1 more source
Gongye shui chuliCr（Ⅵ）-染料复合污染废水在印染、制革等工业生产活动中普遍存在。基于“以废治废”的理念，利用水体中的Cr（Ⅵ）活化工业废物亚硫酸盐〔Cr（Ⅵ）/S（Ⅳ）体系〕，探究其同步去除罗丹明B（RhB）和Cr（Ⅵ）的可行性，鉴别了反应体系中的活性物种，并考察了Na2SO3和Cr（Ⅵ）的初始浓度、反应溶液初始pH以及溶解氧对RhB和Cr（Ⅵ）降解效果的影响。结果表明：在pHini=3时，1.00 mmol/L Na2SO3和0.15 mmol/L Cr（Ⅵ）在60 min内可去除95.1%的RhB和87.4 ...
李天羽 +4 more
doaj +2 more sources
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective The aim of this study was to characterize intellectual and motor function, neurological features including epilepsy, treatment response, and adaptive behavior in patients with pyruvate dehydrogenase complex deficiency (PDCD) in Sweden.
Antri Savvidou +6 more
wiley +1 more source
Changes in Immune‐Inflammation Status and Prognosis in Pregnancy‐Related Cerebral Venous Thrombosis
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective Distinguishing pathological changes from physiological adaptations in pregnancy‐related cerebral venous thrombosis (CVT) is clinically challenging. This study aimed to characterize coagulation, immune‐inflammation, and dehydration status in these patients and assess their prognostic value.
Xiaoming Zhang +7 more
wiley +1 more source
Gongye shui chuli, 2017 为解决水体Cr（Ⅵ）污染，实现农业固废资源化利用，通过水热H3PO4改性制备了花生壳基吸附剂，并将其用于水中Cr（Ⅵ）的吸附。实验结果表明，在453 K下，与质量分数为15%的H3PO4水热反应10 h制备的改性花生壳性能最优；当吸附剂投加量为2 g/L，pH=2.0，Cr（Ⅵ）初始质量浓度为5 mg/L，吸附时间为120 min时，水中Cr（Ⅵ）去除率可达86.83%。改性花生壳对Cr（Ⅵ）的吸附过程符合伪二级动力学模型，属于Langmuir单分子层吸附。
孟祥霞, 邬欣慧, 马东, 吴娟
doaj +2 more sources
, 2018 以脱钠赤泥、粉状褐煤为原料,羧甲基纤维素钠为黏结剂,采用碳热还原法制备了可替代商业铁炭微电解填料的廉价铁炭材料,用于去除废水中的Cr(Ⅵ)。考察了不同的制备参数(炭化温度、炭化时间、赤泥/煤质量比)和吸附条件(溶液pH、浓度),以提升Cr(Ⅵ)去除效果。结果表明质量比(赤泥/煤)为1/3、800℃炭化1h的赤泥/煤基铁炭材料,可达到最大Cr(Ⅵ)吸附量(4.03 mg·g~(-1))、最低铁溶出量(
许光文 +6 more
core