Search

Copyright of Pearl River is the property of Pearl River Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Rural Water & Hydropower is the property of China Rural Water & Hydropower Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

镇痛和镇静是儿科重症监护病房(PICU)治疗中必不可少的环节,其目的是减少疼痛、焦虑,防止意外拔管,提高 患儿与机械通气的同步性,遗忘不愉快的回忆。目前,最常用的镇痛药物仍是阿片类药物,常用的镇静药物有苯二氮类、苯巴比 妥、异丙酚及右美托咪定。同时,选择合适的评估量表监测PICU 患儿镇痛镇静状态,可减少不良反应的发生,降低对患儿精神和 心理伤害,缩短住院时间。 [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to solve pitch curves of N-Lobed non-circular bevel gear being discontinuous, a novel pitch curve design method for non-circular bevel gear( NCBG) was presented to simplify design of NCBG, the intersection curve equations between pitch cone surface of non-circular gear and spherical surface were derived, and the intersection curve was taken as pitch curve of NCBGs. Bevel gear with spherical involute was considered as generating cutter of NCBGs tooth profile, and mathematical models between pitch surface of bevel gear cutter and that of NCBGs were established. Based on this model, a machining simulation algorithm was developed. Based on simulation to enveloping motion on pitch curves of non-circular bevel gear, the process of the non-circular bevel gear can be achieved. The results indicate that by designing Pascal curves of bevel gear, the design method is extensive applicable value, and algorithm is practical for improving processing efficiency of non-circular bevel gear, while generating curves of tooth profile can be taken by using machining simulation algorithm. [ABSTRACT FROM AUTHOR]