Arterial blood gases and electrolytes were determined in 159 cases of adult respirato-ry distress syndrome(ARDS).It was found that disordered acid-base balance was a commonfinding in various kinds of ARDS.In mild ARDS...Arterial blood gases and electrolytes were determined in 159 cases of adult respirato-ry distress syndrome(ARDS).It was found that disordered acid-base balance was a commonfinding in various kinds of ARDS.In mild ARDS,respiratory alkalosis and the combination ofrespiratory alkalosis plus metabolic alkalosis or metabolic acidosis were usually encounted,whilein moderate and severe cases of ARDS,triple acid-base disorders,respiratory acidosis,and thecombination of respiratory acidosis plus metabolic acidosis were commonly seen.Severe alkalosiswas one of the factors to result in death.展开更多
Ethanol is a considerable platform molecule in biomass conversion,which could be acquired in quantity through acetone-butanol-ethanol(ABE)fermentation.People have been working on the upgrading of ethanol to value adde...Ethanol is a considerable platform molecule in biomass conversion,which could be acquired in quantity through acetone-butanol-ethanol(ABE)fermentation.People have been working on the upgrading of ethanol to value added chemicals for decades.In the meantime,1-butanol and a series of value added products have been selectively generated through C–C bond coupling.In this mini-review,we focus on the recent advances in selective C–C bond formation over balanced Lewis acid-base catalysts such as modified metal oxide,mixed metal oxide,hydroxyapatite and zeolite confined transition metal oxide catalysts.Among them,Pd-MgAlO_x and Sr-based hydroxyapatite exhibit>70%1-butanol selectivity,while Zn——xZr_yO_z and Ta-Si BEA zeolite achieve>80%of isobutene and butadiene selectivity respectively.The mechanism and reaction pathway of C–C bond formation in each reaction system are described in detail.The correlation between C–C bond coupling and the acidity/basicity of the Lewis acid-base pairs from the surface of the catalysts are also discussed.展开更多
文摘Arterial blood gases and electrolytes were determined in 159 cases of adult respirato-ry distress syndrome(ARDS).It was found that disordered acid-base balance was a commonfinding in various kinds of ARDS.In mild ARDS,respiratory alkalosis and the combination ofrespiratory alkalosis plus metabolic alkalosis or metabolic acidosis were usually encounted,whilein moderate and severe cases of ARDS,triple acid-base disorders,respiratory acidosis,and thecombination of respiratory acidosis plus metabolic acidosis were commonly seen.Severe alkalosiswas one of the factors to result in death.
基金supported by the “111 Project” of China (B18030) and Nankai University
文摘Ethanol is a considerable platform molecule in biomass conversion,which could be acquired in quantity through acetone-butanol-ethanol(ABE)fermentation.People have been working on the upgrading of ethanol to value added chemicals for decades.In the meantime,1-butanol and a series of value added products have been selectively generated through C–C bond coupling.In this mini-review,we focus on the recent advances in selective C–C bond formation over balanced Lewis acid-base catalysts such as modified metal oxide,mixed metal oxide,hydroxyapatite and zeolite confined transition metal oxide catalysts.Among them,Pd-MgAlO_x and Sr-based hydroxyapatite exhibit>70%1-butanol selectivity,while Zn——xZr_yO_z and Ta-Si BEA zeolite achieve>80%of isobutene and butadiene selectivity respectively.The mechanism and reaction pathway of C–C bond formation in each reaction system are described in detail.The correlation between C–C bond coupling and the acidity/basicity of the Lewis acid-base pairs from the surface of the catalysts are also discussed.
