The prognosis of heart failure （HF） patients has significantly improved in the last 20 years, given the advent of therapies such as angiotensin-converting enzyme （ACE） inhibitors/angiotensin receptor blockers （A...The prognosis of heart failure （HF） patients has significantly improved in the last 20 years, given the advent of therapies such as angiotensin-converting enzyme （ACE） inhibitors/angiotensin receptor blockers （ARBs）, beta-block- ers, and implantable cardioverter-defibrillator （ICD）/cardiac resynchronization therapy devices （CRT）. In addition to these promising therapies, proper nursing-care is also important. Here we summarize recent progress of nursing-care strategies in older HF patients, including routine nursing care, transitional care model, self-care, and role of exercise training in old patients with HF.展开更多
A method to upgrade the iron grade in copper slag was proposed using lime to decompose Al_(2)O_(3)-containing fayalite melt(AFMT).Thermodynamic calculations indicated that adjusting the CaO/AFMT ratio can yield a resi...A method to upgrade the iron grade in copper slag was proposed using lime to decompose Al_(2)O_(3)-containing fayalite melt(AFMT).Thermodynamic calculations indicated that adjusting the CaO/AFMT ratio can yield a residual melt with a FeO concentration of 75−88 wt.%and produce Ca_(2)SiO_(4).In-situ observations suggested that the reaction was impeded in some way.Quenching experiments revealed that the initial reaction products consisted of calcium ferrite compounds and FeO−CaO melt.At the FeO−CaO melt/AFMT interface,Ca_(2)SiO_(4) particles precipitated,forming a dense Ca_(2)SiO_(4) film that significantly impeded mass transfer.Although trace amounts of Al_(2)O_(3) in AFMT temporarily enhanced mass transfer,they were insufficient to overcome this retardation effect.The decomposition reaction was far from achieving equilibrium,demonstrating a self-retardation effect.Measures must be implemented to eliminate this self-retardation effect and enhance the efficiency of reaction kinetics.展开更多
文摘The prognosis of heart failure （HF） patients has significantly improved in the last 20 years, given the advent of therapies such as angiotensin-converting enzyme （ACE） inhibitors/angiotensin receptor blockers （ARBs）, beta-block- ers, and implantable cardioverter-defibrillator （ICD）/cardiac resynchronization therapy devices （CRT）. In addition to these promising therapies, proper nursing-care is also important. Here we summarize recent progress of nursing-care strategies in older HF patients, including routine nursing care, transitional care model, self-care, and role of exercise training in old patients with HF.
基金supported by the National Natural Science Foundation of China (No.52121004)the National Science Fund for Distinguished Young Scholars (No.51825403)+2 种基金the Science and Technology Innovation Program of Hunan Province,China (No.2021RC3013)National Key R&D Program of China (No.2022YFC3901602)the Major Science and Technology Project of Gansu Province,China (No.21ZD4GD033)。
文摘A method to upgrade the iron grade in copper slag was proposed using lime to decompose Al_(2)O_(3)-containing fayalite melt(AFMT).Thermodynamic calculations indicated that adjusting the CaO/AFMT ratio can yield a residual melt with a FeO concentration of 75−88 wt.%and produce Ca_(2)SiO_(4).In-situ observations suggested that the reaction was impeded in some way.Quenching experiments revealed that the initial reaction products consisted of calcium ferrite compounds and FeO−CaO melt.At the FeO−CaO melt/AFMT interface,Ca_(2)SiO_(4) particles precipitated,forming a dense Ca_(2)SiO_(4) film that significantly impeded mass transfer.Although trace amounts of Al_(2)O_(3) in AFMT temporarily enhanced mass transfer,they were insufficient to overcome this retardation effect.The decomposition reaction was far from achieving equilibrium,demonstrating a self-retardation effect.Measures must be implemented to eliminate this self-retardation effect and enhance the efficiency of reaction kinetics.
