检索结果-南通市图书馆

A thermodynamic view on the in-situ carbon dioxide reduction by biomass-derived hydrogen during calcium carbonate decomposition

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2024年第4期68卷 231-240页

作者： Peng Jiang hao Zhang Guanhan Zhao Lin Li Tuo Ji Liwen Mu Xiaohua Lu jiahua Zhu State Key Laboratory of Materials-oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

In the carbonate industry,deep decarbonization strategies are necessary to effectively remediate CO_(2).These strategies mainly include both sustainable energy supplies and the conversion of CO_(2)in downstream *** study developed a coupled process of biomass chemical looping H2 production and reductive calcination of CaCO_(3).Firstly,a mass and energy balance of the coupled process was established in Aspen *** this,process optimization and energy integration were implemented to provide optimized operation ***,a life cycle assessment was carried out to assess the carbon footprint of the coupled *** reveal that the decomposition temperature of CaCO_(3)in an H_(2)atmosphere can be reduced to 780℃(generally around 900℃),and the conversion of CO_(2)from CaCO_(3)decomposition reached 81.33%with an H2:CO ratio of 2.49 in gaseous *** optimizing systemic energy through heat integration,an energy efficiency of 86.30%was ***,the carbon footprint analysis revealed that the process with energy integration had a low global warming potential(GWP)of-2.624 kg·kg^(-1)(CO_(2)/CaO).Conclusively,this work performed a systematic analysis of introducing biomass-derived H_(2)into CaCO_(3)calcination and demonstrated the positive role of reductive calcination using green H_(2)in mitigating CO_(2)emissions within the carbonate industry.

关键词： Biomass CaCO_(3)reductive calcination Chemical looping Hydrogen production Carbon footprint Thermodynamics process

双瓣替换术中保留二尖瓣全瓣下结构对左心功能的影响

在线全文

学校读者我要写书评

暂无评论

第二军医大学学报 1998年第6期19卷 566-568页

作者：梅举朱家麟张宝仁郝家骅第二军医大学长海医院心胸外科

目的：评价保留二尖瓣全瓣下结构对双瓣替换者术后左心功能的影响。方法：１９例风心病患者行二尖瓣及主动脉瓣双瓣替换术时保留二尖瓣全瓣下结构（Ａ组），同期３７例作常规双瓣替换术（Ｂ组），监测Ａ、Ｂ两组术后血流动力学及左心功... 详细信息

目的：评价保留二尖瓣全瓣下结构对双瓣替换者术后左心功能的影响。方法：１９例风心病患者行二尖瓣及主动脉瓣双瓣替换术时保留二尖瓣全瓣下结构（Ａ组），同期３７例作常规双瓣替换术（Ｂ组），监测Ａ、Ｂ两组术后血流动力学及左心功能指标。结果：Ａ组术后心排指数、每搏指数和左室收缩功指数显著优于Ｂ组（Ｐ＜０．０５）。术后超声心动图显示Ａ组左室内径、左室功能较Ｂ组改善显著（Ｐ＜０．０５）。

关键词：心脏瓣膜替换左心功能血流动力学二尖瓣

Surgical Treatment of Late Functional Tricuspid Regurgitation after Mitral Valve Replacement

在线全文

学校读者我要写书评

暂无评论

Surgical Treatment of Late Functional Tricuspid Regurgitatio...

Quantitative evaluation of various NIR-to-red upconversion mechanisms in NaYF_(4):20%Yb^(3+),2%Er^(3+)nanoparticles

The Fifth China International Congress on Thoracic and Cardiovasculal Surgery

作者： Mei Ju Zhang Baoren hao jiahua et al Department of Cardiothoracic Surgery Changhai Hospital2nd Military Medical University Shanghai 200433 China

＜正＞ Objective:To report the role of surgical treatment of late functional tricuspid regurgitation（TR）after mitral valve replacement（MVR）.Methods:There were thirty-seven patients with moderate tosevere functional TR late after *** MVR was performed with mechanical valve in 24 casesand biological valve in 13.11 patients received medical therapy and 26 surgical *** typesof surgery included MVR and tricuspid valve replacement in 2 cases,MVR and tricuspid valve annulo-plasty in 11,tricuspid valve replacement in 3 and tricuspid valve annuloplasty in *** differentmethods of tricuspid valve annuloplasty were used for correction of TR,which included modified Kayannuloplasty in 12 cases and modified De Vega annuloplasty in 7 and tricuspid valve ring annuloplastyin ***:Six of 11 patients who received medical therapy died within 7 months to 7.5 years and179

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Science China Materials 2024年第10期67卷 3115-3123页

作者： hao Wu Lin Yang Liangliang Zhang Huajun Wu Guohui Pan Yongshi Luo Ligong Zhang Feng Liu jiahua Zhang Key Laboratory of Luminescence Science and Technology Chinese Academy of Sciences&State Key Laboratory of Luminescence and ApplicationsChangchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education Northeast Normal UniversityChangchun 130024China College of Intelligent Systems Science and Engineering Hubei Minzu UniversityEnshi 445000China

In the most popular NaYF_(4):Yb/Er upconversion nanoparticles(UCNPs),the red emission is attributed to four potential excitation routes encompassing two-and threephoton excitation ***,this red emission typically exhibits a super-quadratic dependency on near-infrared(NIR)excitation intensity,with the nonlinear order n being dependent on the individual contributions(Cis)of these four excitation ***,the Cis values are not constant but significantly impacted by the surface quenching of the UCNPs,leading to a decrease in the n ***,a quantitative assessment of these variable Cis has not been undertaken,hindering a comprehensive understanding of the quenching effect on the UC *** this work,we prepare four NaYF_(4):Yb/Er nanocrystal samples with varying degrees of surface quenching,achieving through the modulation of particle size and core-shell *** quantitatively evaluate the Cis values and identify the primary excitation route responsible for the red *** results reveal that the contribution of three-photon excitation increases from 7%in the 30 nm bare core to 74%in 90 nm core with shell at an excitation intensity of 200 mW cm^(−2).This observation highlights the impact of surface quenching ***,we discover that the quenching effect operates by reducing the lifetimes of the Yb^(3+)2F_(5/2)and Er^(3+)4S3/2 levels,while enhancing the NIR emission intensity ratio of the Er^(3+)4I_(13/2)→4I_(15/2)transition to the Yb^(3+)2F_(5/2)→2F_(7/2)*** findings provide physical insights into the excitation mechanisms underlying the red UC emission in NaYF_(4):Yb/Er UCNPs.

关键词： upconversion nanoparticles NaYF_(4):Yb/Er NIR-tored upconversion mechanisms

风心病二尖瓣狭窄合并肺动脉高压围术期血流动力学的变化

在线全文

学校读者我要写书评

暂无评论

第二军医大学学报 1999年第12期20卷 1000-1002页

作者：徐激斌张宝仁朱家麟郝家骅徐志云第二军医大学长海医院胸心外科上海200433

目的:观察风湿性心脏病(风心病)二尖瓣狭窄肺动脉高压围术期的转归规律。方法:风心病二尖瓣狭窄合并肺动脉高压患者37例(男11,女26),以平均肺动脉压5.33kPa为界分肺动脉高压(PH)组和严重肺动脉高压(SPH)组。应用Swan-Ganz导管和HP监护... 详细信息

目的:观察风湿性心脏病(风心病)二尖瓣狭窄肺动脉高压围术期的转归规律。方法:风心病二尖瓣狭窄合并肺动脉高压患者37例(男11,女26),以平均肺动脉压5.33kPa为界分肺动脉高压(PH)组和严重肺动脉高压(SPH)组。应用Swan-Ganz导管和HP监护系统测定围术期血流动力学的变化。结果:PH组术后即刻及术后48h心排血指数(CI)有明显增加,平均肺动脉压(PAPm)、肺血管阻力指数(PVRI)、肺动脉楔压(PAWP)均有明显下降;SPH组有与PH组相似的变化趋势,但程度小于PH组。结论:风心病二尖瓣狭窄合并肺动脉高压患者二尖瓣置换术后早期肺血流动力学即有明显的改善。

关键词：风湿性心脏病二尖瓣狭窄肺动脉高压转归

缺血预处理对大鼠心肌细胞超微结构的保护作用

在线全文

学校读者我要写书评

暂无评论

第二军医大学学报 1998年第2期19卷 159-161页

作者：乌立晖张宝仁朱家麟郝家骅杨勇骥第二军医大学长海医院胸心外科第二军医大学基础医学部中心实验室

目的：观察缺血预处理对大鼠心肌细胞抗缺血再灌注损伤的作用。方法：培养ＳＤ乳鼠心肌细胞，分别以模拟缺血溶液和模拟再灌注溶液先后置换培养基，制备模拟缺血再灌注模型。实验分为模拟缺血再灌注组，缺血预处理组，佛波酯、去甲肾上... 详细信息

目的：观察缺血预处理对大鼠心肌细胞抗缺血再灌注损伤的作用。方法：培养ＳＤ乳鼠心肌细胞，分别以模拟缺血溶液和模拟再灌注溶液先后置换培养基，制备模拟缺血再灌注模型。实验分为模拟缺血再灌注组，缺血预处理组，佛波酯、去甲肾上腺素、腺苷预处理组和１－（５－异喹啉硫酰）－２－甲基哌嗪（Ｈ７）＋缺血预处理组。模拟缺血再灌注后，用透射电镜观察各组心肌细胞的超微结构改变。结果：模拟缺血再灌注组心肌细胞超微结构损伤较重；缺血预处理组心肌细胞肌浆及线粒体水肿较轻，膜结构较好；其他药物预处理组细胞结构改变比缺血预处理组明显；加用Ｈ７组细胞结构改变与模拟缺血再灌注组近似。结论：缺血预处理对心肌细胞缺血再灌注损伤有一定的保护作用。

关键词：心肌细胞缺血预处理缺血再灌注损伤蛋白激酶C

在线全文

学校读者我要写书评

暂无评论

Ebstein心脏畸形的外科治疗

第二军医大学学报 1999年第12期20卷 1012-1014页

作者：邹良建汪曾炜张宝仁朱家麟郝家骅梅举第二军医大学长海医院胸心外科上海200433

目的:总结Ebstein心脏畸形(Ebsteinanomaly)手术治疗的经验,以提高临床治疗水平。方法:1990年5月至1998年10月外科治疗Ebstein心脏畸形27例,其中合并预激综合征6例。年龄4.5～43岁,平均26.5岁。按NYHA推荐标准分级,术前心功能级者2例,级... 详细信息

目的:总结Ebstein心脏畸形(Ebsteinanomaly)手术治疗的经验,以提高临床治疗水平。方法:1990年5月至1998年10月外科治疗Ebstein心脏畸形27例,其中合并预激综合征6例。年龄4.5～43岁,平均26.5岁。按NYHA推荐标准分级,术前心功能级者2例,级者12例,级者9例,级者4例。手术采用改良Danielson房化心室折叠术22例,三尖瓣置换术5例,其中6例合并预激综合征者行附加旁路切割术。结果:平均随访3年2个月,早期死亡1例,生存26例,无晚期死亡。术后心功能恢复至级者15例,级者9例,级者2例。合并预激综合征患者术后未再发生阵发性室上性心动过速。结论:掌握好手术指征和正确选择三尖瓣矫正方法有助于提高疗效,成形术者后瓣环缩后再加作后瓣环上提术尤为重要;加强术后处理,可明显降低术后早期并发症。

关键词： Ebstein 心脏畸形心脏外科手术

荧光粉/SiO_(2)荧光膜用于高显指激光照明

在线全文

学校读者我要写书评

暂无评论

硅酸盐学报 2024年第3期52卷 820-827页

作者：武华君潘国徽吴昊张亮亮张家骅中国科学院长春光学精密机械与物理研究所长春130033 中国科学院大学材料科学与光电工程中心北京100049

利用“蓝光激光+无机荧光体”的方式产生白光是当前激光照明的主流技术,具有结构简单、成本低等优势。但现有的无机荧光体光谱中缺乏青绿光和红光成分,导致激光照明的显色指数偏低。本工作通过引入电荷补偿剂Na^(+)的方式,制备出高效的... 详细信息

利用“蓝光激光+无机荧光体”的方式产生白光是当前激光照明的主流技术,具有结构简单、成本低等优势。但现有的无机荧光体光谱中缺乏青绿光和红光成分,导致激光照明的显色指数偏低。本工作通过引入电荷补偿剂Na^(+)的方式,制备出高效的蓝绿色Ca_(3)Sc_(2)Si_(3)O_(12):Ce^(3+),Na^(+)荧光粉,其内/外量子效率分别达到86%和55%;然后结合商用CaAlSiN_(3):Eu^(2+)红粉,以二氧化硅溶胶为无机黏结剂,在蓝宝石衬底上低温制备出高效的复合荧光膜。该荧光膜具有良好的热稳定性,200℃时其荧光强度仍保持在常温下的84%;荧光膜中绿光、黄光、红光成分均匀分布,其半高宽达176 nm;在蓝光激光激发下产生647 lm的白光,光效122 lm/W,光源的显色指数88。这些结果表明荧光粉/SiO_(2)复合荧光膜在高显色激光照明中有广阔的应用前景。

关键词：激光照明荧光转换体高显色石榴石硅酸钪钙

在线全文

学校读者我要写书评

暂无评论

老年房间隔缺损病人的手术治疗

上海医学 2001年第1期24卷 29-31页

作者：韩林张宝仁郝家骅朱家麟梅举邹良建第二军医大学长海医院胸心外科上海200433

目的　总结老年房间隔缺损病人手术治疗经验。方法　对 12例 6 0岁以上继发孔型房间隔缺损病人进行手术治疗 ,年龄为 6 0～ 6 6岁 ,平均 (6 2 .3± 2 .4)岁 ,全部合并三尖瓣关闭不全 ,其中还合并二尖瓣关闭不全 10例 ;房颤 9例 ,房扑 1... 详细信息

目的　总结老年房间隔缺损病人手术治疗经验。方法　对 12例 6 0岁以上继发孔型房间隔缺损病人进行手术治疗 ,年龄为 6 0～ 6 6岁 ,平均 (6 2 .3± 2 .4)岁 ,全部合并三尖瓣关闭不全 ,其中还合并二尖瓣关闭不全 10例 ;房颤 9例 ,房扑 1例 ;术前采用右心导管进行肺动脉测压 ,肺动脉平均压为 (5 .31± 3.12 )kPa ,最高为8.4kPa。本组房缺修补采用心包片或涤纶补片修补 ,同期行三尖瓣成形术 12例 ,其中 3例行Kay’s二叶瓣成形术 ,9例行Devage成形术 ;二尖瓣成形术 6例 ,二尖瓣置换术 2例 ,3例合并有房颤者同期行右房迷宫术。结果　 12例病人术后全部存活 ,心功能均有明显改善 ,但与其他年龄组手术病人比较 ,术后多巴胺使用时间和住院时间明显延长 ,6例发生胸腔积液 ,术后随访 3～ 6 0个月。

关键词：房间隔缺损三尖瓣关闭不全房颤老年人外科手术