This International Standard specifies the requirements for fine-tolerance hoist chains of grade VH for use as load chains in hand operated chain hoists for lifting purposes. They are round steel short link chains, electrically welded, heat treated, and tested; they comply with the general conditions of acceptance of ISO 1834. NOTE 1 The letter “V” expresses the grade in accordance with ISO 1834. NOTE 3 Resistance butt welding and flash welding are listed in ISO 4063. NOTE 2 The letter “H” expresses that these hoist chains are for hand operated hoists only. The range of nominal sizes covered by this International Standard is from 3 mm to 13 mm. Fine-tolerance hoist chains, according to this International Standard, are for use in the temperature range −10 °C to 150 °C.
ISO 16872:2015由国际标准化组织 IX-ISO 发布于 2015-01。
ISO 16872:2015在国际标准分类中归属于: 53.020.30 起重设备附件。
根据不同的引物得到重链的VH或VHCH1区,轻链的VL或VLCL区。VL和VH两个片段用一短肽作连接片段,形成单链可变区(single-chain fragment variable,scFv);VHCH1和VLCL两片段则形成Fab片段。另外,单独的VH和VL也能结合抗原,如果二者形成同源或异源二聚体(dAb),则稳定性和亲和性明显提高(图7—4)。...
每条多肽链都有氮基端和基端,氨基末端轻链的1/2和重链的1/4区域内氨基酸组成及排列顺序高度可变,称为可变区(V区),用VH和VL表示,能与抗原特异性结合。羧基末端轻链的1/2与重链的3/4区域内氨基酸的组成和排列比较恒定,称此区为恒定区,用CH 和CL.表示。位于重链恒定区之间的铰链区,含有大量的脯酸,富有弹性,可使免疫球蛋白由T型转变为Y型,暴露补体结合点,便于结合补体 。...
每条多肽链都有氮基端和基端,氨基末端轻链的1/2和重链的1/4区域内氨基酸组成及排列顺序高度可变,称为可变区(V区),用VH和VL表示,能与抗原特异性结合。羧基末端轻链的1/2与重链的3/4区域内氨基酸的组成和排列比较恒定,称此区为恒定区,用CH 和CL.表示。位于重链恒定区之间的铰链区,含有大量的脯酸,富有弹性,可使免疫球蛋白由T型转变为Y型,暴露补体结合点,便于结合补体 。...
除下列变更外,多数测试与本标准2016版中的测试相同:ASTM F 2417-17 用宗教/仪式用蜡烛代替之前的复活节/圣典礼仪用蜡烛增加泛用蜡烛的定义和燃烧测试,现在对该类型蜡烛的燃烧性能测试时间做出了新的规定....
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