Results 11 to 20 of about 5,067 (147)

术中适时调温策略对膝关节清理术患者影响临床研究

open access: yesZhongguo shiyan zhenduanxue, 2022
目的 分析术中适时调温策略对膝关节清理术中体温的影响,为此类临床患者术中体温管理提供一些借鉴。方法 回顾性分析2018年12月-2019年12月间在成都医学院附属二院416医院进行膝关节清理术的60例患者,依据患者在术中不同的体温管理办法,对照组(30例)患者采用冲洗液加温和常规被动保温措施,观察组(30例)在对照组基础上采取术中适时调温的方法。分别记录两组患者进入手术室后、麻醉诱导后、手术开始时、术中40min、术中80min、术中120min、出手术室时的体温情况,以及患者麻醉苏醒时间。结果 ...
刘梅, 齐磊, 吴润梅
doaj  

The Intersexual Differences of Sexual Dimorphism,Feeding Habits and Locomotor Performance at Different Temperatures of Southern Grass Lizard(Takydromus sexlineatus) in Zhaoqing,China [PDF]

open access: yes, 2009
通过测量头、尾、体和胃检,研究肇庆南草蜥TAkydrOMuS SEXlInEATuS个体发育过程中两性异形和食性差异。南草蜥成体个体两性大小无显著差异,雄性头部显著大于雌性,两性头部大小异形可能是受到性选择压力的结果。雌雄个体食物生态位重叠度较高,两性生态位差异微弱,食性差异与两性头部异形无明显相关性。通过设计13种不同的环境温度,研究体温变化对南草蜥两性个体运动能力表现的影响。结果显示环境温度通过影响体温而影响南草蜥的运动表现,两性个体疾跑速均具有在低体温范围内随体温升高而加快 ...
徐大德   +4 more
core   +2 more sources

Study on isolation and culture of mesophyll protoplasts of Dendrobium officinale Kimura et Migo(铁皮石斛叶肉原生质体的分离与培养研究)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2004
对铁皮石斛无菌试管苗叶片原生质体的游离及培养条件进行了研究.结果表明原生质体分离的适宜酶液配比是0.5% Pectinase和1.0% Cellulase Onozuka R-10,渗透压调节剂的浓度为0. 5 mol/L,以蔗糖作为渗透压调节剂优于甘露醇和葡萄糖,质壁分离处理后的叶片原生质体产量提高了 16.6%,存活率提高了 14.2%.培养在1/10 MS附加2 mg/L NAA + 0. 5 mg/L 6-BA和多种有机成分培养基上的铁皮石斛无菌苗叶片原生质体,3〜5 d 后开始第一次分裂,30
ZHANZhong-gen(詹忠根)   +2 more
doaj   +1 more source

基于单片机的LED智能照明系统 [PDF]

open access: yes, 2017
本文在总结了前人LED的基础上,利用单片机智能控制的方法研究智能LED的设计和制备,利用色度学三基色配色原理,通过更改三基色LED的电流大小实现整体LED系统的调光和调色,系统可实现亮度20%-100%的调节,实现全彩调节,满足人们的多样化照明需求;同时可通过手机APP利用红外技术实现LED的无线遥控 ...
曹文越
core   +1 more source

高温与高原条件对炼钢工人机体的综合影响 [PDF]

open access: yes, 1980
炼钢车间高温条件对工人机体影响的问题,国内已有大量研究报告。有关部门据此提出了我国高温车间的卫生标准,以及相应的卫生保健措施,对于保护炼钢工人的健康,起了很好的作用。但是这些研究的对象主要是平原或丘陵地区的炼钢厂。其间影响工人的主要因素是高温与劳动强度。西宁钢厂地处青海高原,海拔高达2,300米左右,气压较低,氧分压亦相应下降,其劳动条件与平原地区不同。工人受着高温与劳动强度,以及低氧环境三者的综合作用。在此条件下,工人机体反应有何特点 ...
徐德本
core  

High‐Brightness Delayed Imaging Realized by Embedding Zinc Gallate Nanocrystals Into Glass

open access: yesRare Metals, EarlyView.
ABSTRACT X‐ray delayed imaging technology leverages an “irradiation‐storage‐thermally stimulated readout” mode, demonstrating unique advantages in intermittent monitoring scenarios such as high‐temperature/high‐radiation environments. This typically requires materials combining abundant carrier‐trapping energy levels with structural thermostability ...
Jun‐Xiao Wu   +6 more
wiley   +1 more source

Precise Tailoring of the Coordination Environment of Single‐Atom Cu(I) on Trifurcate AlL3 Supports for Click Chemistry

open access: yesRare Metals, EarlyView.
ABSTRACT Single‐atom catalysis hinges on fundamental challenges in precisely controlling metal‐support interactions and rationally regulating metal–adsorbate relationships. Herein, we report a universal strategy for constructing highly efficient and well‐defined Cu(I) single‐atom catalysts based on a trifurcate AlL3 molecular support.
Donghui Zhang   +9 more
wiley   +1 more source

对乙酰氨基酚中毒1例的抢救治疗和护理 [PDF]

open access: yes
Acetaminophen is commonly used for fever, joint pain, neuralgia, and migraine for its antipyretic and analgesic effects in clinical practice. While large dose of acetaminophen may result in toxic, which causes coma and respiratory failure, cardiac arrest
LI, Chao   +3 more
core   +2 more sources

How much biotic nativeness matters across human demographic groups

open access: yesConservation Biology, EarlyView.
Abstract Many central concepts of conservation biology—such as nativeness—are structured by ecological and social factors. However, the social consequences of using these concepts to make conservation decisions remain inadequately understood. Some researchers argue that nativeness, rather than acting as an objective proxy for important ecological ...
Harold N. Eyster, Rachelle K. Gould
wiley   +1 more source

低温胁迫下北方林蛙冷冻保护剂系统研究进展

open access: yes野生动物学报, 2021
林蛙属(Rana)物种是一类具有鼓膜和背侧褶皱,脚趾有蹼,颞面黑色,非繁殖期在山林生活的棕色蛙类。生活在北方(高纬度或高海拔)的林蛙具有耐冻性,能够忍受结冰环境而不死亡。研究表明:林蛙在低温胁迫下的存活得益于其冷冻保护系统,葡萄糖和尿素是2种主要的冷冻保护剂。进入秋季,林蛙通过蛋白质分解和脂质代谢增加体内糖原储备,遭遇低温后通过调节糖酵解和糖异生反应满足其生存的需要,尿素循环和转运相关蛋白也受到生化调节。
李玉莹金莉莉王秋雨
doaj  

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