Results 121 to 130 of about 602 (238)
[Determination of glutathione in cells by capillary electrophoresis-laser induced fluorescence]. [PDF]
Se Pu, 2023 Men X, Wu C, Chen M, Wang J.
europepmc +1 more source
, 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 ...
许光文 +6 more
core
Near‐Field Electrospinning Micro‐Printhead Achieves Precise Control of Nanofiber Deposition
Advanced Engineering Materials, EarlyView.A micro‐printhead for near‐field electrospinning enables reproducible deposition of polymer nanofibers with diameters below 50 nm. Systematic parameter studies uncover the mechanisms linking operating conditions to fiber morphology, paving the way for precise and low‐cost nanoscale 3D manufacturing.As a high‐resolution, cost‐effective, and rapid ...
Han Xu, Dario Mager, Jan G. Korvink
wiley +1 more source
离子交换-ICP发射光谱法测定水中微量Cr(Ⅵ)和Cr(Ⅲ)
Gongye shui chuli, 1987 本文研究了用国产树脂分离富集水中微量Cr(Ⅵ)和Cr(Ⅲ)，并用ICP发射光谱法直接测定洗脱液中Cr(Ⅵ)和Cr(Ⅲ)的方法。文中用正交试验法选择离子交换条件，方法快速、准确。本方法可将0.05PPm数量级的Cr(Ⅵ)和Cr(Ⅲ)进行较完全的分离和有效的富集。适于环境监测工作中对有害铬的测定。
邓名馨, 尹世荣
doaj
Advanced Engineering Materials, EarlyView.A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm +3 more
wiley +1 more source
Gongye shui chuli, 2011 采用氢氧化钠-异丙醇对松树叶进行化学改性,同时将改性松树叶用于对Cr(Ⅵ)的吸附实验。通过单因素实验,考察了处理条件对Cr(Ⅵ)吸附效果的影响。结果表明,对50 mL质量浓度为10.0 mg/L的Cr(Ⅵ)溶液,在溶液pH=3.0,投加改性松树叶0.2 g,温度30℃,接触时间90 min的条件下,Cr(Ⅵ)的去除率可达82%以上。改性松树叶在20～30℃对Cr(Ⅵ)的吸附是吸热过程,以离子交换吸附为主,吸附过程遵循Freundlich吸附等温线。
杜婷 +4 more
doaj
, 2014 首次利用乳液交联法制备了耐酸性磁性壳聚糖(Fe_3O_4@SiO_2@Chilosan)微球。然后利用红外光谱作为主要手段,指导材料的进一步功能化修饰,制备了聚乙烯亚胺(PEI)和环氧丙基三甲基氯化铵(GT MAC)改性磁性壳聚糖微球(Fe_3O_4@SiO_2@Chitosan PEI/-GTMAC。并将所制备磁性壳聚糖微球作为一种的新型生物吸附剂用于处理酸性含Cr(Ⅵ)废水。吸附实验结果表明Fe_3O_4@SiO_2@Chitosan PEI/-GTMAC的最大吸附量分别为236.4与233.1 ...
孙西同, 杨良嵘, 刘会洲
core
Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys
Advanced Engineering Materials, EarlyView.This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa +9 more
wiley +1 more source
Gongye shui chuli, 2018 以鸡粪和玉米芯的混合物为原料，制备热解生物炭前驱体（BPC），并用尿素对其水热改性，得到水热改性热解生物炭（HMPC），研究了HMPC对废水中Cr（Ⅵ）和甲基橙（MO）的吸附性能。结果表明，在温度为25℃，Cr（Ⅵ）、MO溶液初始pH分别为2.0、6.5，搅拌速率为150 r/min，HMPC投加量为1 g/L的条件下，对初始质量浓度为100 mg/L的Cr（Ⅵ）、MO的吸附量分别为56.26、73.31 mg/g。HMPC对Cr（Ⅵ）和MO的吸附较好地遵循准二级动力学模型 ...
余剑刚 +4 more
doaj
Advanced Engineering Materials, EarlyView.This study demonstrates how optimizing laser power, scanning speed, and hatching distance in laser powder bed fusion can boost the productivity of Inconel 718 manufacturing by up to 29% while maintaining mechanical integrity. The work delivers a validated process window and cost–time analysis, offering industry‐ready guidelines for efficient additive ...
Amir Behjat +7 more
wiley +1 more source