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油料挤压提高出油率 被引量:4
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作者 萧涛 E.W.Lusas +1 位作者 L.R.Watkins m.a.williams 《中国油脂》 CAS CSCD 北大核心 1993年第4期50-54,共5页
油料加工工业正迅速采用油料预挤压的方法来提高溶剂浸出的出油率。此法用一个安装有剪切螺栓的单螺杆,间断螺旋的挤压机。在加工含油高于30%的油料时,在筒体上安装有一个出油榨笼。这种方法节约的原因由于:1、粕中含溶剂减少,回收溶... 油料加工工业正迅速采用油料预挤压的方法来提高溶剂浸出的出油率。此法用一个安装有剪切螺栓的单螺杆,间断螺旋的挤压机。在加工含油高于30%的油料时,在筒体上安装有一个出油榨笼。这种方法节约的原因由于:1、粕中含溶剂减少,回收溶剂费用降低;2、浸出器产量增加一倍;3、用成本低、耗能少的装置,代替预榨机的工作。加工每吨大豆或棉籽可节约3~5美元,设备投资可在6~12个月内收回。 展开更多
关键词 油料 挤压 出油率
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秘鲁妇女胎盘早剥的危险因素
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作者 Sanchez S.E. Pacora P.N. +2 位作者 Farfan J.H. m.a.williams 李奎 《世界核心医学期刊文摘(妇产科学分册)》 2006年第4期13-14,共2页
Objective: We examined the relation of maternal sociodemographic, medical, and behavioral characteristics with risk of abruptio placentae in Peruvian women. Study design: This case-control study included 255 abruptio ... Objective: We examined the relation of maternal sociodemographic, medical, and behavioral characteristics with risk of abruptio placentae in Peruvian women. Study design: This case-control study included 255 abruptio placentae cases and 258 pregnant controls. Multivariable logistic regression models were fit to calculate odds ratios (OR) and 95%CIs adjusted for putative abruptio placentae risk factors. Results: History of delivering a stillborn infant (OR 10.0; 95%CI 4.0-25.2)-, pregnancy complicated by preeclampsia/eclampsia (OR 3.7; 95%CI 2.2-6.3); and a lowr ate of pregnancy weight gain ( < 0.15 kg/wk) (OR 2.5; 95%CI 1.3-4.7), were associated with significantly increased risk of abruptio placentae. Advanced maternal age, low educational attainment, male infant gender, cigarette smoking, and grand multiparity were not risk factors of abruptio placentae in this population. Conclusion: At present, the constellation of abruptio placentae risk factors do not provide clinically meaningful opportunities for identifying high-risk patients. 展开更多
关键词 胎盘早剥 孕期体重 高龄孕妇 多胎妊娠 病例对照研究 回归模型 人口社会学 研究设计
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