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降低钢包翻损工业实践
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作者 靳随城 罗开敏 覃媚 《宝钢技术》 CAS 2024年第2期61-64,共4页
结合350 t钢包浇注翻损实际情况,分析了工艺过程控制和钢包状态对翻损的影响。结果表明:炉内渣量越大,出钢下渣量越多,翻损量越高。随着转炉过吹比例上升,渣量增大,渣中TFe增加,会使连铸钢包下渣提前,翻损增加;钢渣中钙铝比越低,钢渣熔... 结合350 t钢包浇注翻损实际情况,分析了工艺过程控制和钢包状态对翻损的影响。结果表明:炉内渣量越大,出钢下渣量越多,翻损量越高。随着转炉过吹比例上升,渣量增大,渣中TFe增加,会使连铸钢包下渣提前,翻损增加;钢渣中钙铝比越低,钢渣熔点越高,钢包浇注后期越不容易下渣,翻损越小;钢包使用过程中水口周围形成的“堰塞湖”会阻碍钢水进入中间包,使得钢水浇注量减少,翻损增加。通过将炉内渣量控制在29 t以内,过吹比例低于7%,炉后渣改质石灰加入量控制为500~800 kg,适当降低钙铝比,同时翻损超8 t钢包返回后进行烧水口作业,可将连铸钢包翻损由6.8 t降低到5.9 t。 展开更多
关键词 钢包 钢渣 翻损
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Translation and piloting of the Chinese Mandarin version of an intensive care-specific pressure injury risk assessment tool(the COMHON Index) 被引量:2
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作者 Josephine Lovegrove Paul Fulbrook +4 位作者 Sandra JMiles Michael Steele Xian-Liang Liu Lin Zhang Angel Cobos Vargas 《International Journal of Nursing Sciences》 CSCD 2022年第2期169-178,I0004,共11页
Objective:To translate an intensive care-specific pressure injury risk assessment tool(the COMHON Index)from English into Chinese Mandarin.Methods:A four-step approach to instrument translation was utilised:1)English-... Objective:To translate an intensive care-specific pressure injury risk assessment tool(the COMHON Index)from English into Chinese Mandarin.Methods:A four-step approach to instrument translation was utilised:1)English-Mandarin forward-translation by three independent bilinguists;2)Mandarin-English back-translation by two other inde-pendent bilinguists;3)comparison of forward and back-translations,identification of discrepancies,with required amendments returned to step one;and 4)piloting of the translated instrument.The pilot study was undertaken in a Chinese surgical intensive care unit with a convenience sample of 20 nurses.A five-point ordinal scale(1=very difficult;5=very easy)was used to assess ease-of-use and understanding.Translations were retained where medians4 indicated use and understanding was easy to very easy.Results:Five iterations of steps 1 to 3,and two sets of amendments to the original English instrument,were required to achieve translation consensus prior to pilot testing.Subscale scoring,sum scoring,and risk categorisation were documented in most pilot assessments(≥80%),but three sum scores were incorrectly tallied.The overall tool and all subscales were easy to use and understand(medians≥4),and most assessments(16/20,80%)took5 min to complete.Thus,translations were retained,with minor amendments made to instrument instructions for scoring and risk categorisation.Conclusions:An easy-to-use Chinese Mandarin intensive care-specific pressure injury risk assessment tool has been introduced through cross-cultural translation.However,it requires further testing of interrater reliability and agreement.A rigorous translation and reporting exemplar is presented that provides guidance for future translations. 展开更多
关键词 Critical care Intensive care units Nursing care Pressure injury Pressure ulcer Risk assessment TRANSLATING
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Alcohol-induced protein hyperacetylation: Mechanisms and consequences 被引量:3
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作者 Blythe D Shepard Pamela L Tuma 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第10期1219-1230,共12页
Although the clinical manifestations of alcoholic liver disease are well-described, little is known about the molecular basis of liver injury. Recent studies have indicated that ethanol exposure induces global protein... Although the clinical manifestations of alcoholic liver disease are well-described, little is known about the molecular basis of liver injury. Recent studies have indicated that ethanol exposure induces global protein hyperacetylationo This reversible, post- translational modification on the E-amino groups of lysine residues has been shown to modulate multiple, diverse cellular processes ranging from transcriptional activation to microtubule stability. Thus, alcohol- induced protein hyperacetylation likely leads to major physiological consequences that contribute to alcohol-induced hepatotoxicity. Lysine acetylation is controlled by the activities of two opposing enzymes, histone acetyltransferases and histone deacetylases. Currently, efforts are aimed at determining which enzymes are responsible for the increased acetylation of specific substrates. However, the greater challenge will be to determine the physiological ramifications of protein hyperacetylation and how they might contribute to the progression of liver disease. In this review, we will first list and discuss the proteins known to be hyperacetylated in the presence of ethanol. We will then describe what is known about the mechanisms leading to increased protein acetylation and how hyperacetylation may perturb hepatic function. 展开更多
关键词 ETHANOL HEPATOTOXICITY ACETYLATION DEACETYLASES ACETYLTRANSFERASES
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Complete canine spinal cord transection model: a large animal model for the translational research of spinal cord regeneration 被引量:9
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作者 Sufang Han Xing Li +1 位作者 Zhifeng Xiao Jianwu Dai 《Science China(Life Sciences)》 SCIE CAS CSCD 2018年第1期115-117,共3页
Traumatic spinal cord injury (SCI) usually results in devastating neurologic deficits and disability. In the United States,approximately 12,500 new cases are reported each year, while an estimated 100,000–140,000 new... Traumatic spinal cord injury (SCI) usually results in devastating neurologic deficits and disability. In the United States,approximately 12,500 new cases are reported each year, while an estimated 100,000–140,000 new cases occur every year in China (National Spinal Cord Injury Statistical Center, 2016).Spinal cord injuries are highly disabling and primarily affect young adults, and therefore create great psychological and financial burden on the affected individuals and their families. 展开更多
关键词 In Complete canine spinal cord transection model SCI
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