Zhendong Ceshi yu Zhenduan为实现不平衡扰动下转子裂纹故障的及时监测、避免安全事故与经济损失，有必要对含有不平衡量的裂纹转子振动特性开展研究。为此，搭建了转子振动特性试验台，对不平衡裂纹转子的振动响应进行测试；试验过程中，以多盘转子为研究对象，采用直径为0.07 mm的精密切割线在转轴处预制横向裂纹，并在转子质量盘处施加不平衡质量。结果表明：在不平衡扰动下，裂纹转子在其临界转速附近出现明显的涡动效应；该涡动效应的产生与消失与不平衡量大小密切相关，无法将其简单归结为单一裂纹因素；在诊断裂纹故障时 ...
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Zn（BF4）2·6H2O:Co2+晶体自旋哈密顿参量的理论研究
四川大学学报. 自然科学版, 2006 用基于基团途径(或半经验的分子轨道法)的微扰公式计算了Co2+离子在Zn(BF4)2.6H2O晶体中的三角对称Zn2+位置的自旋哈密顿参量(g因子和超精细结构常数).通过计算,我们发现Co2+杂质中心的八面体是三角伸长的,且常数为负值.对上述结果的合理性进行了讨论.
冯文林, 刘虹刚
doaj
Linchuang shenzangbing zazhi, 2014 目的 根据中医组方配伍雷公藤多苷（GTW）组成雷至胶囊及桑椹液,旨在对抗GTW的生殖毒性。方法 4周龄Wistar大鼠分7组,正常对照组（自由进食水）,雷公藤多苷高剂量组(20mg·kg-1·d-1),雷公藤多苷低剂量组(10 mg·kg-1·d-1),雷至灌胃液高剂量组(RZ液,雷公藤多苷20 ng·kg-1·d-1+稀释后RZ液2 ml/只),雷至灌胃液低剂量组(RZ液,雷公藤多苷10 mg·kg-1·d-1+稀释后RZ液2 ml/只),桑椹液高剂量(雷公藤多苷20 mg·kg-1·d-1 ...
李春庆
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[Application of Artificial Intelligence in Sperm Quality Analysis and Sperm Screening]. [PDF]
Sichuan Da Xue Xue Bao Yi Xue BanPang J, Hou W, Nong Y, Bian A, Xu W.
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[Simultaneous determination of three tryptamines in foods by ultra performance liquid chromatography-tandem mass spectrometry coupled with hydrophilic column separation]. [PDF]
Se PuLiao XL +7 more
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Se PuLi ZX +7 more
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Se PuChen Q, Ma ZC, Li YN.
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Gongye shui chuli采用硫酸吸收荒煤气中氨气生产硫酸铵过程中，随着硫酸铵母液的循环使用，母液中的金属离子、有机物、氯离子等杂质不断累积，为避免影响硫酸铵产品质量和设备的稳定运行，通常需要置换出部分硫酸铵母液来降低杂质含量。由于被排出的废硫酸铵母液中氨氮、COD、氯离子及金属离子浓度极高，不满足直接排入焦化废水处理系统的水质要求。针对某煤精厂高盐高有机物废硫酸铵母液，采用氨气将硫酸铵母液pH调节至7.5~9.0，使母液中粗吡啶析出后溢流去除，使金属离子形成的氢氧化物沉淀，通过板框压滤机过滤去除 ...
刘士强, 王传荟, 施亮
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[Determination of 15 fentanyl analogs and amphetamine-type stimulants in hair by liquid chromatography-tandem mass spectrometry and gas chromatography-mass spectrometry]. [PDF]
Se PuWei Q, Su FH, Zhu X.
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[Pathogenic mechanisms and advances in the diagnosis and treatment of co-occurring psychiatric and psychological symptoms in patients with liver cirrhosis]. [PDF]
Zhonghua Gan Zang Bing Za ZhiGong H +6 more
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