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专项护理干预在重症肺炎合并呼吸衰竭患者中的应用效果

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保健医学研究与实践 2024年第1期21卷 90-94页

作者：张庆陶彭丹孟凡星张婷陈亚利甄鹏首都医科大学附属北京潞河医院感染科北京101149

目的探讨专项护理干预在重症肺炎合并呼吸衰竭患者中的应用效果。方法选取2020年2月—2022年11月首都医科大学附属北京潞河医院收治的75例重症肺炎合并呼吸衰竭患者为研究对象,根据护理干预方法不同分为观察组(n=39)和对照组(n=36)。对... 详细信息

目的探讨专项护理干预在重症肺炎合并呼吸衰竭患者中的应用效果。方法选取2020年2月—2022年11月首都医科大学附属北京潞河医院收治的75例重症肺炎合并呼吸衰竭患者为研究对象,根据护理干预方法不同分为观察组(n=39)和对照组(n=36)。对照组采用常规护理干预,观察组患者在对照组基础上采用专项护理干预。比较2组患者干预前后汉密尔顿焦虑量表(HAMA)和汉密尔顿抑郁量表(HAMD)评分、匹兹堡睡眠质量指数(PSQI)量表评分、世界卫生组织生存质量测定简表(WHOQOL-BREF)评分及干预期间并发症发生情况。结果2组患者干预前HAMA及HAMD评分比较,差异均无统计学意义(P>0.05);2组患者干预后HAMA及HAMD评分均低于干预前,且观察组患者均低于对照组,差异均有统计学意义(P0.05);2组患者干预后PSQI量表的睡眠持续时间、睡眠效率、入睡所需时间、睡眠质量、促睡眠药物、睡眠障碍、日间功能障碍7个维度评分及总分均低于干预前,且观察组患者均低于对照组,差异均有统计学意义(P0.05);2组患者干预后WHOQOL-BREF量表的生理功能、心理状态、躯体健康、社会功能4个维度评分均高于干预前,且观察组患者均高于对照组,差异均有统计学意义(P<0.05)。观察组患者并发症发生率为7.69%(3/39),低于对照组的27.78%(10/36),差异有统计学意义(χ^(2)=5.271,P=0.022)。结论将专项护理干预应用于重症肺炎合并呼吸衰竭患者的护理中,能有效改善患者的心理状况及睡眠质量,提高患者生活质量,降低并发症的发生风险。

关键词：重症肺炎呼吸衰竭专项护理干预生活质量睡眠质量心理状态

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2020—2022北京东部地区发热呼吸道症候群病例病原学检测结果分析

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华南预防医学 2024年第2期50卷 148-152页

作者：张庆陶胡明孟凡星李洪军王燕荣田丹首都医科大学附属北京潞河医院北京010149 北京市通州区于家务社区卫生服务中心北京市通州区中西医结合医院

目的分析2020—2022年北京东部地区发热呼吸道症候群病例病原谱情况,为发热呼吸道症候群的防控提供参考依据。方法选择北京东部通州地区3所医院2020年1月至2022年12月报告的发热呼吸道症候群病例的上、下呼吸道样本进行采集,采用微生... 详细信息

目的分析2020—2022年北京东部地区发热呼吸道症候群病例病原谱情况,为发热呼吸道症候群的防控提供参考依据。方法选择北京东部通州地区3所医院2020年1月至2022年12月报告的发热呼吸道症候群病例的上、下呼吸道样本进行采集,采用微生物全自动鉴定仪检测细菌,多重实时荧光PCR对发热呼吸道症候群常见病毒检测。结果 2 208例发热呼吸道症候群病例任一细菌阳性检出率为79.39%(1 753/2 208);检出最高的细菌是铜绿假单胞菌,其次是流感嗜血杆菌,检出率分别是23.19%、19.84%。任一病毒阳性检出率为40.17%(887/2 208);检出最高的病毒是人呼吸道合胞病毒(HRSV),其次是人鼻病毒(HRV),检出率分别是12.09%、10.14%。梨园镇细菌阳性检出率最高(25.86%),检出最高的细菌是铜绿假单胞菌(3.62%);中仓街病毒阳性检出率最高(7.20%),检出最高的病毒是HRSV(1.76%)。夏季至冬季检出最高的细菌均以铜绿假单胞菌(4.76%、4.53%、9.42%)为主。春、冬季检出最高的病毒均以HRSV(3.12%、5.79%)为主,夏季检出最高的病毒以HRV(2.22%)为主。1月龄~10岁人群细菌阳性检出最高(17.39%),检出最高的细菌是铜绿假单胞菌(5.53%);1月龄~10岁人群病毒阳性检出率最高(8.24%),检出最高的病毒是HRSV(2.85%)。结论 2020—2022年北京东部通州地区发热呼吸道症候群病例病原构成以细菌为主,病毒需重视HRSV,其次是HRV,春季和冬季细菌、病毒检出率高,儿童以及老年人群是需重点关注的高危人群,故应针对上述情况加强防控工作。

关键词：发热呼吸道症候群病毒细菌流行特征

Insight into the experiment and extraction mechanism for separating carbazole from anthracene oil with quaternary ammonium-based deep eutectic solvents

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Chinese Journal of Chemical Engineering 2024年第1期65卷 188-199页

作者： Xudong zhang Yanhua Liu Jun Shen Yugao Wang Gang Liu Yanxia Niu qingtao Sheng College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China

Carbazole is an irreplaceable basic organic chemical raw material and intermediate in *** separation of carbazole from anthracene oil by environmental benign solvents is important but still a challenge in chemical *** eutectic solvents (DESs) as a sustainable green separation solvent have been proposed for the separation of carbazole from model anthracene *** this research,three quaternary ammonium-based DESs were prepared using ethylene glycol (EG) as hydrogen bond donor and tetrabutylammonium chloride (TBAC),tetrabutylammonium bromide or choline chloride as hydrogen bond *** explore their extraction performance of carbazole,the conductor-like screening model for real solvents (COSMO-RS) model was used to predict the activity coefficient at infinite dilution (γ^(∞)) of carbazole in DESs,and the result indicated TBAC:EG (1:2) had the stronger extraction ability for carbazole due to the higher capacity at infinite dilution (C^(∞)) ***,the separation performance of these three DESs was evaluated by experiments,and the experimental results were in good agreement with the COSMO-RS prediction *** TBAC:EG (1:2) was determined as the most promising ***,the extraction conditions of TBAC:EG (1:2) were optimized,and the extraction efficiency,distribution coefficient and selectivity of carbazole could reach up to 85.74%,30.18 and 66.10%,***,the TBAC:EG (1:2) could be recycled by using environmentally friendly water as *** addition,the separation performance of TBAC:EG (1:2) was also evaluated by real crude anthracene,the carbazole was obtained with purity and yield of 85.32%,60.27%,***,the extraction mechanism was elucidated byσ-profiles and interaction energy *** calculation results showed that the main driving force for the extraction process was the hydrogen bonding ((N–H...Cl) and van der Waals interactions (C–H...O and C–H...π),which correspondin

关键词： Carbazole Model anthracene oil Deep eutectic solvents COSMO-RS Extraction mechanism

Experimental Study on Consolidation Properties of Hydrate-Bearing Fine-Grained Sediments Collected from the Shenhu Area of the Northern South China Sea

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Journal of Ocean University of China 2024年第4期23卷 981-990页

作者： WEI Ruchun LIU Lele JIA Chao DONG Xiao BU qingtao zhang Yongchao LIU Changling WU Nengyou School of Water Conservancy and Environment University of JinanJinan 250022China Shandong Engineering Research Center of Marine Exploration and Conservation Ocean University of ChinaQingdao 266100China Key Laboratory of Gas Hydrate Ministry of Natural ResourcesQingdao Institute of Marine GeologyQingdao 266237China Institute of Marine Science and Technology Shandong UniversityQingdao 266232China

Mechanical properties of hydrate-bearing fine-grained sediments are crucial to effectively mitigate environmental risks caused by artificial and natural decomposition of natural gas hydrates,and the decomposition can induce laterally confined *** explore the effect of natural gas hydrates on laterally confined compression properties,consolidation tests are conducted on remolded hydrate-free and hydrate-bearing samples by using natural fine-grained sediments collected from the northern South China Sea as the host sediments,and empirical equations are developed based on the analyses of consolidation *** results show that vertical loading induces a reduction in void ratio,and the reduction increases with decreasing hydrate saturation when samples are subjected to the same vertical stress *** compression index of samples is about 0.53 whether there is hydrate or not,but the yield stress of samples increases sharply with increasing hydrate saturation once beyond the critical *** coefficient of volume compression and the coefficient of consolidation of hydrate-bearing samples both increase firstly and then decrease to a relative stable level with increasing vertical stress,and the transition occurs at 200 *** average consolidation degree with elapsed time increases rapidly under low vertical stresses,slowly under median vertical stresses,and under high vertical stresses,the consolidation increases a little faster but still slower than those under low vertical stresses.

关键词： natural gas hydrate stiffness compression index hydraulic permeability geohazard

Research on the Mechanism of Penetration Increase by Flux in A-TIG Welding

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Journal of Materials Science & Technology 2003年第Z1期19卷 225-227页

作者： Chunli YANG Sanbao LIN Fengyao LIU Lin WU qingtao zhang State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Lab. of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

The mechanism of penetration depth increased by activating flux in activating tungsten inert gas (A-TIG) weldingwas studied by measuring the distribution of trace element Bi in the weld and monitoring the change of arc voltageduring A-TIG welding of stainless steel 0Crl8Ni9 with fluxes SiO2 and TiO2. The results show that the mechanismof penetration depth in A-TIG welding depends on the sort of flux used. The weld pool convection after coating theflux SiO2 and flux TiO2 is changed inversely compared with convectional TIG welding without flux. The arc voltageis increased by flux SiO2 whilst flux TiO2 does not have effect on the arc voltage. The reason of penetration depthincrease for SiO2 is due to the constriction of arc plasma and the change of surface tension gradient. The increaseof weld penetration depth with TiO2 only ascribes to the change of surface tension gradient.

关键词： TIG welding, Activating flux, Surface tension, Arc voltage

Hydrodechlorination of trifluoro-trichloroethane to chlorotrifluoroethylene:Revealing the deactivation mechanism and regeneration strategy of Pd-Cu/AC catalyst

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Chinese Journal of Chemical Engineering 2024年第6期70卷 261-268页

作者： Song Tian Yicheng Chen Xiaoyu Wen Bingcheng Li Jian Lu Zile Li Feng Feng qingtao Wang Qunfeng zhang Xiaonian Li State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology Institute of Industrial Catalysis of Zhejiang University of TechnologyHangzhou 310014China State Key Laboratory of Fluorine&Nitrogen Chemicals Xi'an Modern Chemistry Research InstituteXi'an 710065China

Chlorotrifluoroethylene(CTFE)is a vital fluorinated olefinic monomer produced through the catalytic hydrodechlorination of trichlorotrifluoroethane(CFC-113),an eco-friendly ***,hydrodechlorination catalysts for olefin production often suffer from poor *** Pd/AC catalyst and Pd-Cu/AC catalyst prepared by co-impregnation method exhibited poor stability,Pd-Cu/AC catalyst with CFC-113 conversion dropping to around 37%after 50 h of hydrodechlorination ***-Emmett-Teller,transmission electron microscopy,X-ray photoelectron spectroscopy,and X-ray diffraction of fresh and deactivated Pd/AC catalysts indicate that the deactivation of Pd/AC catalysts is due to high-temperature agglomeration of *** analysis of fresh and deactivated Pd-Cu/AC catalysts using Brunauer-Emmett-Teller,transmission electron microscopy,and thermogravimetric analysis techniques revealed decreased dispersion of active sites,reduced surface area,catalyst aggregation deactivation,and a significant decrease in Cu ***,the results of NH3-TPD revealed that the acid sites of the catalyst increased significantly.X-ray diffraction spectra indicated the formation of new species,basic copper chloride(Cu_(2)(OH)_(3)Cl),during the *** the reaction progressed,these new species agglomerated,leading to a gradual loss of catalyst ***,the deactivated catalyst was successfully reactivated using a simple alkaline washing method.

关键词： CFC-113 Hydrodechlorination Chlorotrifluoroethylene Catalyst deactivation

PREPARATION OF PMNT NANO-POWDERS

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China Particuology 2006年第2期4卷 90-92页

作者： qingtao zhang Yanqiu Li Yonghong Shang Institute of Electrical Engineering Chinese Academy of Sciences Zhongguancun Beijing 100080 P. R. China Graduate School of the Chinese Academy of Sciences Beijing 100039 R R. China

Sol-gel-derived nano-powders of lead magnesium niobate and lead titanate solid solutions （PMN-PT or PMNT） were prepared from lead acetate trihydrate （Pb（CH3COO）2·3H2O）, magnesium acetate trihydrate （Mg（CH3COO）2·3H2O）, niobium ethoxide （Nb（OC2H5）5） and titanium isopropoxide （Ti（OCH（CH3）2）4）. The key steps in the preparation process were discussed, The crystalline phases in the powders were investigated using X-ray diffraction （XRD） analysis and the size of grains was observed by field-emission scanning electron microscopy （SEM）. These powders, with good dispersion characteristics and narrow grain size distribution （ranging from 50 nm to 200 nm）, may be used to prepare PMNT thick films and ceramics.

关键词： PMNT nano-powders relaxation ferroelectrics

基于CFD-DEM的水下切粒装置水室内颗粒流动过程数值模拟

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中国塑料 2022年第6期36卷 87-91页

作者：张庆弢毕超北京化工大学机电工程学院北京100029

基于CFD-DEM耦合方法,研究了颗粒在水室内的流动状态,分析了不同刀盘转速、粒子水通入量和水室出口角度对造粒过程的影响,发现提高刀盘转速、增加粒子水通入量和水室出口倾斜一定的角度都有利于水室内颗粒的排出。进一步研究了颗粒与碎... 详细信息

基于CFD-DEM耦合方法,研究了颗粒在水室内的流动状态,分析了不同刀盘转速、粒子水通入量和水室出口角度对造粒过程的影响,发现提高刀盘转速、增加粒子水通入量和水室出口倾斜一定的角度都有利于水室内颗粒的排出。进一步研究了颗粒与碎屑在水室内的流动,发现在水室出口处二者的流动基本呈现出一定的分离角度。

关键词：水下切粒 CFD-DEM耦合方法水室数值模拟颗粒流动

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超纤渗灌对绿色屋顶土壤水分和蒸散发的影响

农业工程学报 2022年第2期38卷 131-138页

作者：吴昕宇张清涛黄思宇王志强中山大学土木工程学院珠海519082 中山大学华南地区水循环与水安全广东省普通高校重点实验室广州510275 广东省海洋土木工程重点实验室珠海519082 中国农业大学水利与土木工程学院北京100083

为研究超纤渗灌对绿色屋顶土壤水分及蒸散发的影响,以金鱼草、七里香、罗汉松、太阳花、多肉及佛甲草为试验材料,观测有无超纤渗灌处理下的绿色屋顶土壤含水率,并通过三温模型及蒸渗仪法测算不同植物的蒸腾速率及蒸散量,评估超纤渗灌对... 详细信息

为研究超纤渗灌对绿色屋顶土壤水分及蒸散发的影响,以金鱼草、七里香、罗汉松、太阳花、多肉及佛甲草为试验材料,观测有无超纤渗灌处理下的绿色屋顶土壤含水率,并通过三温模型及蒸渗仪法测算不同植物的蒸腾速率及蒸散量,评估超纤渗灌对绿色屋顶蒸散发的影响。结果表明:超纤渗灌处理下的七里香、金鱼草及裸土种植盆内的平均土壤含水率分别比无超纤渗灌处理提高27%,18%及47%,超纤渗灌能增加土壤含水率,减少水分胁迫情况的发生。在夏季(雨季),超纤渗灌处理的植物蒸腾速率总体显著(P<0.01)大于无超纤渗灌处理,且气温越高,植物冠层温度与气温温差越大。在冬季(旱季),超纤渗灌能使屋顶基底温度平均高出0.25℃,减小温度变化振幅;超纤渗灌处理能使佛甲草夜间蒸散量增加0.14mm,但白天有超纤渗灌的蒸散量比无超纤渗灌低了0.57mm,总体减少了9.3%。超纤渗灌能提高绿色屋顶土壤含水率,在夏季增加植物蒸散量,在增加冬季夜间屋顶蒸散量的同时,也有利于绿色屋顶白天吸附空气水分,促进这一部分非降水资源的利用。

关键词：灌溉含水率屋顶绿化超纤渗灌蒸散发