Results 1 to 10 of about 36,291 (90)
Successful surgical removal of a pheochromocytoma in a mare via trans‐costal approach
Equine Veterinary Journal, Volume 55, Issue 6, Page 1012-1020, November 2023., 2023 Abstract Background Pheochromocytomas have been previously reported in horses, but successful antemortem diagnosis and surgical removal without recurrence of clinical signs have not been described. Objective To report the clinical presentation, diagnostic evaluation, surgical technique, anaesthetic management and post‐operative care of a mare diagnosed
Thomas J. O'Brien +6 more
wiley +1 more source
Gongye shui chuli, 2021 电镀、金属加工、鞣制毛皮、冶炼金属、胶版印刷等工业生产过程中，会产生较高浓度的含铬废水。为解决高浓度含铬废水难处理问题，采用室内静态实验方法，研究了还原剂种类、反应时间、投加量、pH以及初始含铬废水浓度对Cr（Ⅵ）还原性能的影响，建立还原动力学方程，并进行了实际含铬废水处理实验。实验结果表明，多硫化钙（CaSx）还原性优于Na2SO3、Na2S2O4等其他硫系还原剂；CaSx最佳投药量为理论投加量的1.75倍，最佳反应时间为90 min，且偏酸性环境条件下处理效果更好；XRD分析表明，CaSx还原Cr ...
李喜林 +4 more
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Zhejiang Daxue xuebao. Lixue ban, 2007 用离子色谱和电感耦合等离子体质谱联用法同时测定样品中三价铬和六价铬.经ICS-AG 14 A(Dionex，USA）阴离子色谱柱分离，60 mmol/L HNO3淋洗液淋洗，用等离子体质谱仪(m/z 50，52和53）在线测定了Cr( Ⅲ)和Cr(Ⅵ), 并对影响测定的各种因素进行了研究，该方法可以在2 min内分离并测定Cr（ Ⅲ）和Cr( Ⅵ). Cr（ Ⅲ）和Cr(Ⅵ)的检出限（S/N=3，m/z 53）分别为0.05 µg/L和0.5 µg/L.线性范围(m/z 53)从0.5 µg/L到500
ZHUMin(朱敏) +4 more
doaj +1 more source
Gongye shui chuli, 2013 针对水源突发性铬(Ⅵ)污染风险,研究了不同反应条件下硫酸亚铁还原沉淀法对铬(Ⅵ)的去除效果。结果表明,硫酸亚铁还原沉淀法是可行的突发性铬(Ⅵ)污染应急处理方法,反应在较短的时间(10 min)内即可达到平衡;在不改变原水pH(7~8)条件下,当硫酸亚铁投加量为16 mg/L,铬(Ⅵ)污染强度为2.00 mg/L时,铬(Ⅵ)去除率达99.1%,出水铬(Ⅵ)与铁质量浓度分别为0.019、0.021 mg/L,满足《生活饮用水卫生标准》(GB 5749—2006)的要求。
韩晓刚, 黄廷林, 陈秀珍
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Gongye shui chuli, 2007 对采用钛-铁双阳极电絮凝技术去除电镀废水中铬(Ⅵ)进行了研究。以铬(Ⅵ)去除率为考察指标,利用单因素试验和正交试验,详细研究了不同阳极材料及组合方式、电流密度、电解时间、废水pH、电导率、静置时间等因素对其去除废水中铬(Ⅵ)效果的影响,经正交试验的极差分析和方差分析表明:对质量浓度为0.2g/L的含铬(Ⅵ)模拟废水,当电流密度控制在1.5A/dm2,电解时间为1.5h,电解质NaCl质量浓度为1.0g/L及废水pH=9时,铬(Ⅵ)的去除率最高,达96.57%。在此基础上应用于处理实际镀铬废水 ...
刘峥, 韩国成, 王永燎
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Rare Metals, Volume 45, Issue 6, June 2026.ABSTRACT Through grain boundary segregation engineering, a crack‐free high‐strength CoCrNi medium‐entropy alloy (MEA) can be successfully fabricated via laser powder bed fusion (PBF‐LB). The influence of micron‐sized TiC particles on microstructural evolution, grain boundary segregation behavior, and mechanical properties was systematically ...
Cunliang Pan +9 more
wiley +1 more source
Gongye shui chuli, 2011 在pH=5.0的NaAc-HAc缓冲介质中,铬(Ⅵ)能催化过氧化氢氧化茜素红的褪色反应。据此,建立了催化光度法测定环境中痕量铬(Ⅵ)的新方法。在优化条件下,于最大吸收波长422 nm处进行测定,铬(Ⅵ)浓度在3.0×10-7~1.0×10-5mol/L范围内呈现良好的线性关系;检出限为1.8×10-7mol/L(3σ);对1.0×10-6 mol/L的铬(Ⅵ)进行了平行测定(n=11),其相对标准偏差为0.5%;考察了多种共存离子的影响。将此法应用于废水中铬(Ⅵ)的测定,回收率在96.5%~97.7 ...
崔英, 张莉
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Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT Developing Cu‐based composites that simultaneously achieve ultra‐high strength, ductility, and electrical conductivity remains critical for advanced electrical contact applications. In this work, multiphase AlCrCuFeNi2.5 high‐entropy alloy (HEA) reinforcements are incorporated into CuCrZr matrix via spark plasma sintering (SPS) and annealing ...
Tao Hong +8 more
wiley +1 more source
The Microstructure Evolution and Mechanical Properties of (FeCoCrNi)100‐x(AlCu)x High‐Entropy Alloys
Rare Metals, Volume 45, Issue 3, March 2026.ABSTRACT This study systematically investigates the effects of AlCu addition on the microstructural evolution and mechanical properties of (FeCoCrNi)100‐x(AlCu)x (x = 0, 5, 10, 15, 20; at%) high‐entropy alloys (HEAs). The results reveal that the microstructure evolves from coarse equiaxed to refined equiaxed, dendritic, and ultimately dual‐phase ...
Shunfu Xie +7 more
wiley +1 more source
Gongye shui chuli, 2006 采用合适的固体助溶剂和固体酸，将二苯碳酰二肼分光光度法应用于水中铬(Ⅵ)的测定。络合物的最大吸收波长为540nm，表观摩尔吸光系数为4.06×104L/(mol.cm)，含铬(Ⅵ)质量浓度在0～0.5mg/L范围内符合比尔定律，常见的共存离子均不干扰测定。混合试剂保存期长，是一种准确、灵敏、快速、简便的铬(Ⅵ)的测定方法。
邓金花, 吴清平, 廖富迎
doaj +2 more sources