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氧气源纤支镜引导胃管插入在昏迷患者中的应用 被引量:2
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作者 刘爱梅 王萍 +1 位作者 欧阳红 李鹰 《齐鲁护理杂志》 2017年第16期40-41,共2页
目的:探讨氧气源纤支镜引导胃管插入在昏迷患者中的临床应用效果。方法:将60例昏迷患者随机分为传统组、对照组及观察组各20例。传统组采用常规插管,对照组采用橡皮球手动挤压注气纤支镜胃管插入,观察组采用氧气源纤支镜引导胃管插入。... 目的:探讨氧气源纤支镜引导胃管插入在昏迷患者中的临床应用效果。方法:将60例昏迷患者随机分为传统组、对照组及观察组各20例。传统组采用常规插管,对照组采用橡皮球手动挤压注气纤支镜胃管插入,观察组采用氧气源纤支镜引导胃管插入。比较三组一次插入成功率、插管所需时间及并发症发生情况。结果:观察组一次插管成功率高于对照组和传统组(P<0.05);插管所需时间短于对照组和传统组(P<0.05);恶心呕吐、呼吸困难、肺部感染、胃黏膜损伤等并发症发生率低于传统组和对照组(P<0.05)。结论:氧气源纤支镜引导胃管插入在昏迷患者中具有较好临床应用效果。 展开更多
关键词 氧气源 纤支镜 胃管插入 昏迷患者
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医用氧气供应源选择要素的研究 被引量:2
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作者 谭西平 张宏伟 +3 位作者 彭建 喻波 陈海勇 黄世清 《中国医学装备》 2017年第3期118-121,共4页
目的:对选择医用氧气供应源需考虑的因素进行对比分析研究,总结出选择医用氧气供应源的要素。方法:对医用液氧供应源、医用氧气汇流排供应源和医用分子筛制氧机供应源3种常用氧气供应源分别执行的国家标准和各氧气供应源的特点进行分析... 目的:对选择医用氧气供应源需考虑的因素进行对比分析研究,总结出选择医用氧气供应源的要素。方法:对医用液氧供应源、医用氧气汇流排供应源和医用分子筛制氧机供应源3种常用氧气供应源分别执行的国家标准和各氧气供应源的特点进行分析,归纳出选择氧气供应源的要素。结果:依据政策法规标准要求、站房场地条件和经济条件是医用氧气供应源选择的主要因素。结论:在充分了解国家和当地相关法律法规的基础上,根据建设项目的场地条件,结合地区技术水平和经济水平进行综合分析比较,方可做出医用氧气供应源科学合理的选择。 展开更多
关键词 医用气体 氧气 氧气供应 主气
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医院项目氧气气源方案的比对分析 被引量:2
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作者 刘建 陈兴忠 《工程建设与设计》 2017年第19期62-65,共4页
针对医院氧气气源的常规设置方案,在技术、经济、运营维护方面做细致的比对分析,给医院建设方解决氧气源问题提供参考,并为医疗建筑设计师提供技术参考和数据支撑。
关键词 医院 氧气源 液氧站 制氧机房
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RN-FD型固体氡气源的稳定性及应用分析 被引量:5
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作者 李朝明 杨志坚 +1 位作者 褚金学 吴谋 《震灾防御技术》 CSCD 北大核心 2018年第1期114-124,共11页
对测氡仪器进行精确校准是氡测量工作中的重要环节,固体氡气源的稳定性、可靠性在校准中则显得至关重要。本文通过分析RN-FD型固体氡气源对闪烁室K值的稳定性实验结果,认为:RN-FD型固体氡气源标称的浓度值与实际浓度值不一致,标称浓度... 对测氡仪器进行精确校准是氡测量工作中的重要环节,固体氡气源的稳定性、可靠性在校准中则显得至关重要。本文通过分析RN-FD型固体氡气源对闪烁室K值的稳定性实验结果,认为:RN-FD型固体氡气源标称的浓度值与实际浓度值不一致,标称浓度值只是理论浓度值而不是实际浓度值,需重新刻度才能使用;RN-FD型固体氡气源抽气循环时间不同则浓度不同,但抽气循环时间固定,观测结果比较稳定;对于没有α检查源的台站,RN-FD型固体氡气源可用于氡观测仪器坪区检查。 展开更多
关键词 氡观测 固体氧气源测氡仪校准标称浓度稳定性
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KSDL-3000型自动定硫仪的气源改进
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作者 张兰君 《煤质技术》 2002年第5期37-39,共3页
利用 KSDL- 30 0 0自动定硫仪 ,以空气代替氧气 ,并运用统计学原理检验两种气体对测硫结果有无显著性差异 ,从而简化程序 。
关键词 KSDL-3000自动定硫仪 电磁抽气泵 氧气源 空气 T检验 显著性差异 煤炭
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增氧机在对虾养殖中的应用
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作者 周浩郎 《科学养鱼》 1999年第6期11-12,共2页
在集约化和半集约化的对虾养殖中,欲取得高的收益,增氧机是必不可少的。没有养殖池水的增氧和流动,就无法应付必须的高投饵和高放苗密度所带来的问题。集约化对虾养殖必须增氧的认识,已普遍为业界所接受。一、虾塘水体中氧气的来源与消... 在集约化和半集约化的对虾养殖中,欲取得高的收益,增氧机是必不可少的。没有养殖池水的增氧和流动,就无法应付必须的高投饵和高放苗密度所带来的问题。集约化对虾养殖必须增氧的认识,已普遍为业界所接受。一、虾塘水体中氧气的来源与消耗虾塘水体中氧气的来源主要有:1氧?.. 展开更多
关键词 对虾养殖 增氧机 氧气源 类型 氧气消耗
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国产最大的臭氧系统——120kg/h大型臭氧系统开始调试
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《水工业市场》 2006年第6期71-71,共1页
自2004年青岛国林实业有限公司20kg/h氧气源臭氧发生器研制成功并通过建设部组织的专家鉴定,该设备在四川西普化工已稳定运行近两年的时间,性能得到了有效验证。国林公司两年来又对该型号设备进一步提高和改进,设备档次、性能、自动化... 自2004年青岛国林实业有限公司20kg/h氧气源臭氧发生器研制成功并通过建设部组织的专家鉴定,该设备在四川西普化工已稳定运行近两年的时间,性能得到了有效验证。国林公司两年来又对该型号设备进一步提高和改进,设备档次、性能、自动化程度已可以与国外同类产品相媲美。 展开更多
关键词 臭氧发生器 调试 系统 同类产品 国产 大型 有限公司 氧气源 设备 香料香精
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住房和城乡建设部50kg/h臭氧发生器研发项目鉴定会在青岛举行
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《水工业市场》 2008年第11期63-63,共1页
10月24日,由青岛国林实业有限责任公司承担完成的《氧气源50kg/h大型臭氧发生器的研制开发项目》科技成果评估鉴定会在青岛隆重举行。会议由住房和城乡建设部科技发展促进中心评估推广处高立新处长主持。
关键词 臭氧发生器 建设部 青岛 有限责任公司 开发项目 科技成果 住房 科技发展 评估鉴定 氧气源
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烟气脱硝装置在环保改造项目中的应用分析
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作者 梁国俊 《电子乐园》 2019年第10期359-359,共1页
本文探讨了上海梅山钢铁股份有限公司的烟气脱硝装置在环保改造项目中的应用,对烟气脱硝的臭氧氧化脱硝系统进行了设计 和实现,优化了氧气源供应系统、冷却水系统及喷射系统、电气系统及仪控系统的设计,基于现有的臭氧脱硝装置进行升级... 本文探讨了上海梅山钢铁股份有限公司的烟气脱硝装置在环保改造项目中的应用,对烟气脱硝的臭氧氧化脱硝系统进行了设计 和实现,优化了氧气源供应系统、冷却水系统及喷射系统、电气系统及仪控系统的设计,基于现有的臭氧脱硝装置进行升级,实现了对烟 气排放的提标改造,具有深刻的环保意义和社会价值。 展开更多
关键词 烟气脱硝装置 氧气源供应 冷却系统 电气系统
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Water, CO_2 and Energy Exchange at Vegetation-air Interface
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作者 肖丽 《Agricultural Science & Technology》 CAS 2012年第9期1908-1914,共7页
[Objective] The aim was to analyze water and heat fluxes, CO2 fluxes and energy balance in wheat ecosystem in Luancheng County of Hebei Province. [Method] Based on data of water and heat flux, and CO2 fluxes, routine ... [Objective] The aim was to analyze water and heat fluxes, CO2 fluxes and energy balance in wheat ecosystem in Luancheng County of Hebei Province. [Method] Based on data of water and heat flux, and CO2 fluxes, routine meteorological and biomass data in Luancheng in 2008, water and heat fluxes, CO2 fluxes and energy balance in wheat ecosystem were explored. [Result] The results showed that latent and sensible heat and CO2 fluxes were of obvious daily and seasonal changes; latent and sensible heat fluxes shaped an inverted U in daily change, and CO2 fluxes were of a U-shape; daily flux peak differed significantly. Furthermore, the change of latent heat, sensible heat and CO2 fluxes were closely related to environ- mental factors. Detailedly, the three were sensitive to light intensity and net radiation, and correlation coefficients were 0.92, 0.66, 0.65 and 0.90, 0.69, 0.74, respectively. Besides, the fluxes, sensitive to temperature, proved better in sunny day, especially for latent flux which is more sensitive to water in soils after precipitation. In addition, closure degree of energy balance in wheat fields was 0.91 and non-closure, caused by measurement error and neglection of heat storage, was observed, too. What's more. closure degree differed in months and time periods within a day. [Conclusion] The research concluded water and heat fluxes, CO2 fluxes, transport mechanisms and concerning factors, providing scientific reference for revealing mechanism of evapo- ration and heat dissipation of canopy, relationship between photosynthesis and water use efficiencyand energy distribution mechanism. 展开更多
关键词 Latent heat flux Sensible heat flux CO2 flux Energy balance Environ-mental factors
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A Technological Overview of Biogas Production from Biowaste 被引量:9
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作者 Spyridon Achinas Vasileios Achinas Gerrit Jan Willem Euverink 《Engineering》 SCIE EI 2017年第3期299-307,共9页
The current irrational use of fossil fuels and the impact of greenhouse gases on the environment are driving research into renewable energy production from organic resources and waste. The global energy demand is high... The current irrational use of fossil fuels and the impact of greenhouse gases on the environment are driving research into renewable energy production from organic resources and waste. The global energy demand is high, and most of this energy is produced from fossil resources. Recent studies report that anaerobic di- gestion (AD) is an efficient alternative technology that combines biofuel production with sustainable waste management, and various technological trends exist in the biogas industry that enhance the production and quality of biogas. Further investments in AD are expected to meet with increasing success due to the low cost of available feedstocks and the wide range of uses for biogas (i.e., for heating, electricity, and fuel). Bio- gas production is growing in the European energy market and offers an economical alternative for bioenergy production. The objective of this work is to provide an overview of biogas production from lignocellulosic waste, thus providing information toward crucial issues in the biogas economy. 展开更多
关键词 Anaerobic digestion BIOGAS Sustainable energy Lignocellulosic waste Microbial ecology
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Metal-organic frameworks for highly efficient oxygen electrocatalysis 被引量:3
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作者 Xiaobo He Fengxiang Yin +2 位作者 Hao Wang Biaohua Chen Guoru Li 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2018年第2期207-227,共21页
Metal‐organic frameworks(MOFs)are a series of highly porous crystalline materials,which are built from inorganic metal nodes and organic linkers through coordination bonds.Their unique porous structural features(such... Metal‐organic frameworks(MOFs)are a series of highly porous crystalline materials,which are built from inorganic metal nodes and organic linkers through coordination bonds.Their unique porous structural features(such as high porosity,high surface areas,and highly ordered nanoporous structures)and designable structures and compositions have facilitated their use in gas capture,separation,catalysis,and energy storage and conversion.Recently,the design and synthesis of pure MOFs and their derivatives have opened new routes to develop highly efficient electrocatalysts toward oxygen reduction reactions(ORR)and oxygen evolution reactions(OER),which are the core electrode reactions in many energy storage and conversion techniques,such as metal‐air batteries and fuel cells.This review first discusses recent progress in the synthesis and the electrocatalytic applications of pure MOF‐based electrocatalysts toward ORR or OER,including pure MOFs,MOFs decorated with active species,and MOFs incorporated with conductive materials.The following section focuses on the advancements of the design and preparation of various MOF‐derived materials-such as inorganic nano‐(or micro‐)structures/porous carbon composites,pure porous carbons,pure inorganic nano‐(or micro‐)structured materials,and single‐atom electrocatalysts-and their applications in oxygen electrocatalysis.Finally,we present a conclusion and an outlook for some general design strategies and future research directions of MOF‐based oxygen electrocatalysts. 展开更多
关键词 Metal‐organic frameworks Porous materials ELECTROCATALYSIS Oxygen reduction reaction Oxygen evolution reaction Energy storage and conversion
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Impacts of the atmospheric apparent heat source over the Tibetan Plateau on summertime ozone vertical distributions over Lhasa
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作者 Wenjun Liang Zhen Yang +8 位作者 Jiali Luo Hongying Tian Zhixuan Bai Dan Li Qian Li Jinqiang Zhang Haoyue Wang Bian Ba Yang Yang 《Atmospheric and Oceanic Science Letters》 CSCD 2021年第3期66-71,共6页
The Tibetan Plateau(TP)is an area sensitive to climate change,where the ozone distribution affects the atmospheric environment of the TP and its surrounding regions.The relatively low total column ozone over the TP in... The Tibetan Plateau(TP)is an area sensitive to climate change,where the ozone distribution affects the atmospheric environment of the TP and its surrounding regions.The relatively low total column ozone over the TP in boreal summer and its spatiotemporal variations have received extensive attention.In this study,five-year balloon-borne measurements of ozone over Lhasa in boreal summer are used to investigate the influences of the apparent heat source(Q1)on the ozone vertical structure over the plateau.The mechanisms for the above processes are also explored.The results show that the tropospheric ozone mixing ratio over Lhasa decreases when the total atmospheric Q1 in the troposphere over the TP is relatively high.Strengthened ascending motions are accompanied by enhanced Q1 over the main TP region.Consequently,the tropospheric ozone mixing ratio over Lhasa decreases when Q1 is higher in summer,which is attributed to the upward transport of the ozone-poor surface air. 展开更多
关键词 OZONE Tibetan Plateau Atmospheric apparent heat source Ascending motion
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Preparation and Characterization of Nanosized Al-MCM-41 Using Different Silica Sources
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作者 I.A. Makhlid R.M. Mohamed +2 位作者 A.A. EI-Midany I.A. Ibrahim E.H. EI-Mossalamy 《Journal of Environmental Science and Engineering》 2010年第4期21-28,共8页
Silica sources influence different aspects of Al-MCM-41 product. The crystallinity of nanosized Al-MCM-41 zeolites prepared crystallization and lead to change in the properties of the final from precursors mixtures co... Silica sources influence different aspects of Al-MCM-41 product. The crystallinity of nanosized Al-MCM-41 zeolites prepared crystallization and lead to change in the properties of the final from precursors mixtures containing different silica sources, e.g. tetraethylorthosilicate (TEOS), colloidal silica (CS), silicic acid (SA) and fumed silica (FS) have been studied. The produced samples are investigated using XRD, SEM, FT-IR, pyridine adsorption and N2 physisorption. XRD results show that the products obtained from different silica sources are in Al-MCM-41 phase. SEM results show that silica sources influence the produced Al-MCM-41 shape. Using silicic acid leads to formation of spherical crystals, TEOS gives cubical crystals, colloidal silica forms spherical crystals with smaller aggregated, and fumed silica gives rounded crystals. N2 physisorption results show that silica sources influence pore-diameter and pore-volume of the produced Al-MCM-41 ; the pore diameter of the produced Al-MCM-41 in case of colloidal silica, TEOS, fumed silica, and silicic acid are 12, 20, 15, and 17A respectively. Also, the pore volume of the produced AI-MCM-41 in case of colloidal silica, TEOS, fumed silica and silicic acid are 0.78, 0.71, 0.76, and 0.8 cm^3/gm, respectively. 展开更多
关键词 AL-MCM-41 PREPARATION silica sources Physico-chemical properties.
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Methane-rich fluid inclusions and their hosting volcanic reservoir rocks of the Songliao Basin, NE China
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作者 WANGPu-Jun HOUQi-jun +3 位作者 CHENGRi-hui LIQuan-lin GUOZhen-hua HUANGYu-long 《Journal of Geoscientific Research in Northeast Asia》 2004年第2期136-142,共7页
Methane-rich fluids were recognized to be hosted in the reservoir volcanic rocks as primary inclusions. Samples were collected from core-drillings of volcanic gas reservoirs with reversed δ13C of alkane in the Xujiaw... Methane-rich fluids were recognized to be hosted in the reservoir volcanic rocks as primary inclusions. Samples were collected from core-drillings of volcanic gas reservoirs with reversed δ13C of alkane in the Xujiaweizi depression of the Songliao Basin. The volcanic rocks are rhyolite dominant being enriched in the more incompatible elements like Cs, Rb, Ba, Th, U and Th with relative high LREE, depleted HREE and negative anomalies of Ti and Nb, suggesting a melt involving both in mantle source and crustal assimilation. Primary fluids hosted in the volcanic rocks should have the same provenance with the magma. The authors concluded that the enclosed CH4 in the volcanics are mantle/magma-derived alkane and the reversed δ13C of alkane in the corresponding gas reservoirs is partly resulted from mixture between biogenic and abiogenic gases. 展开更多
关键词 Songliao Basin reservoir volcanic rocks primary fluid inclusion CH4 and CO2 abiogenic origin natural gas
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Energy Conservation Effect of Refrigerated Cabinets at Supermarket Utilizing the Exhaust Heat from Dispersed Power
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作者 Tatsuya Shikano Sang-Chul Bae +1 位作者 Masafumi Katsuta Tomohiro Anamizu 《Journal of Energy and Power Engineering》 2015年第4期317-325,共9页
Since the nuclear disaster occurred from huge earthquake in Japan 2011, Japanese energy generation system has been expected to prioritize safety and trustworthiness. To meet this requirement, distributed power supply ... Since the nuclear disaster occurred from huge earthquake in Japan 2011, Japanese energy generation system has been expected to prioritize safety and trustworthiness. To meet this requirement, distributed power supply systems are considered to be one of solutions. In this study, we aimed to conserve energy and reduce carbon dioxide emission of supermarket which installed a novel environment-friendly dispersed power. We focused the energy used by refrigerated cabinets. We built small scale model of supermarket which was equipped with dispersed power. From this scale model, the energy conservation effect of supercooling is from 10% to 25% during the summertime and intermediate time. At last, we found that when outside temperature is about 14 ℃ or more, supercooling was effective. In addition, since energy consumption of refrigerated cabinet is influenced by inside enthalpy, we controlled the inside air temperature and humidity by installing desiccant system and examined its effect. 展开更多
关键词 Dispersed power energy conservation SUPERMARKET refrigerated cabinets supercooling.
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Implications of 1.5 K climate warming on warm-season ozone exposure and atmospheric oxidation capacity in China
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作者 Zhihao Shi Lin Huang +5 位作者 Xiaodong Xie Momei Qin Jingyi Li Bingye Xu Lingling Jin Jianlin Hu 《Atmospheric and Oceanic Science Letters》 2024年第6期53-61,共9页
Surface ozone(O_(3))poses significant threats to public health,agricultural crops,and plants in natural ecosystems.Global warming is likely to increase future O_(3)mainly by altering atmospheric photochemical reaction... Surface ozone(O_(3))poses significant threats to public health,agricultural crops,and plants in natural ecosystems.Global warming is likely to increase future O_(3)mainly by altering atmospheric photochemical reactions and enhancing biogenic volatile organic compound(BVOC)emissions.To assess the impacts of the future 1.5 K climate target on O_(3)concentrations and ecological O_(3)exposure in China,numerical simulations were conducted using the CMAQ(Community Multiscale Air Quality)model during April-October 2018.Ecological O_(3)exposure was estimated using six indices(i.e.,M7,M24,N100,SUM60,W126,and AOT40f).The results show that the temperature rise increases the MDA8 O_(3)(maximum daily eight-hour average O_(3))concentrations by∼3 ppb and the number of O_(3)exceedance days by 10-20 days in the North China Plain(NCP),Yangtze River Delta(YRD),and Sichuan Basin(SCB)regions.All O_(3)exposure indices show substantial increases.M24 and M7 in eastern and southern China will rise by 1-3 ppb and 2-4 ppb,respectively.N100 increases by more than 120 h in the surrounding regions of Beijing.SUM60 increases by greater than 9 ppm h^(−1),W126 increases by greater than 15 ppm h^(−1)in Shaanxi and SCB,and AOT40f increases by 6 ppm h^(−1)in NCP and SCB.The temperature increase also promotes atmospheric oxidation capacity(AOC)levels,with the higher AOC contributed by OH radicals in southern China but by NO_(3)radicals in northern China.The change in the reaction rate caused by the temperature increase has a greater influence on O_(3)exposure and AOC than the change in BVOC emissions. 展开更多
关键词 Temperature increase Ozone exposure Biogenic emissions Atmospheric oxidation capacity
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