DCMSL （depolarization components of molecular scattering of light） have been studied within the wide spectral range （0-200 cm-1） and in the temperature intervals （20-200 ℃） in toluol （C6HsCH3） and aniline （C...DCMSL （depolarization components of molecular scattering of light） have been studied within the wide spectral range （0-200 cm-1） and in the temperature intervals （20-200 ℃） in toluol （C6HsCH3） and aniline （C6HsNH2）. It has been shown that when a liquid is heated and temperatures approach to critical ones, a significant contribution of DCMSL is made by vibration motion of molecules. The special properties of the temperature-frequency behavior of DCMSL spectra are discussed from the view point of hindered rotation of liquid molecules with consideration of intermolecular interaction.展开更多
The elderly population is increasing worldwide, with subjects 〉 65 years of age constituting the fastest-growing age group. Furthermore, the elderly face the greatest risk and burden of cardiovascular disease mortali...The elderly population is increasing worldwide, with subjects 〉 65 years of age constituting the fastest-growing age group. Furthermore, the elderly face the greatest risk and burden of cardiovascular disease mortality and morbidity. Although elderly patients, particularly those older 〉 75, have not been well represented in randomized clinical trials evaluating lipid-lowering therapy, the available evidence supporting the use of statin therapy in primary prevention in older individuals is derived mainly from subgroup analyses and post-hoc data. On the other hand, elderly patients often have multiple co-morbidities that require a high number of concurrent medications; this may increase the risk for drug-drug interactions, thereby reducing the potential benefits of statin therapy. The aim of this review was to present the relevant literature regarding statin use in the elderly for theft primary cardiovascular disease, with the associated risks and benefits of treatment.展开更多
Aqueous Na-ion batteries have been extensively studied for large-scale energy storage systems. However,their wide application is still limited by their inferior cycle stability(<3000 cycles) and poor temperature to...Aqueous Na-ion batteries have been extensively studied for large-scale energy storage systems. However,their wide application is still limited by their inferior cycle stability(<3000 cycles) and poor temperature tolerance. Furthermore, many of the reported high rate behaviors are achieved at a low mass loading(<3 mg cm^(-2)) of the electrodes. Herein, we propose an aqueous Na-ion battery which includes a Ni-based Prussian blue(NiHCF) cathode, a carbonyl-based organic compound, 5,7,12,14-pentacenetetrone(PT)anode and a “water-in-salt” electrolyte(17 mol kg^(-1)NaClO_(4)in water). Its operation involves the reversible coordination reaction of the PT anode and the extraction/insertion of Na;in the NiHCF cathode. It is demonstrated that the wide internal spaces of the PT anode and NiHCF cathode can not only buffer the volumetric change induced by Na;storage, but also enable fast kinetics. The full cell exhibits a supercapacitor-like rate performance of 50 A g^(-1)(corresponding to a discharge or charge within 6.3 s)and a super-long lifespan of 15,000 cycles. Moreover, the excellent rate performance can still be preserved even with a high mass loading of the electrodes(15 mgNiHCFcm^(-2)and 8 mgPTcm^(-2)).Especially, the cell can work well in a wide temperature range, from-40 to 100 °C, showing a typical all-climate operation.展开更多
文摘DCMSL （depolarization components of molecular scattering of light） have been studied within the wide spectral range （0-200 cm-1） and in the temperature intervals （20-200 ℃） in toluol （C6HsCH3） and aniline （C6HsNH2）. It has been shown that when a liquid is heated and temperatures approach to critical ones, a significant contribution of DCMSL is made by vibration motion of molecules. The special properties of the temperature-frequency behavior of DCMSL spectra are discussed from the view point of hindered rotation of liquid molecules with consideration of intermolecular interaction.
文摘The elderly population is increasing worldwide, with subjects 〉 65 years of age constituting the fastest-growing age group. Furthermore, the elderly face the greatest risk and burden of cardiovascular disease mortality and morbidity. Although elderly patients, particularly those older 〉 75, have not been well represented in randomized clinical trials evaluating lipid-lowering therapy, the available evidence supporting the use of statin therapy in primary prevention in older individuals is derived mainly from subgroup analyses and post-hoc data. On the other hand, elderly patients often have multiple co-morbidities that require a high number of concurrent medications; this may increase the risk for drug-drug interactions, thereby reducing the potential benefits of statin therapy. The aim of this review was to present the relevant literature regarding statin use in the elderly for theft primary cardiovascular disease, with the associated risks and benefits of treatment.
基金funding support from the National Key Research and Development Plan(2016YFA0203302 2018YFE0201702 and 2016YFB0901500)the National Natural Science Foundation of China(21975052 21935003 and 21875045)Chenguang Program supported by Shanghai Education Development Foundation and Shanghai Municipal Education Commission(19CG01)。
文摘Aqueous Na-ion batteries have been extensively studied for large-scale energy storage systems. However,their wide application is still limited by their inferior cycle stability(<3000 cycles) and poor temperature tolerance. Furthermore, many of the reported high rate behaviors are achieved at a low mass loading(<3 mg cm^(-2)) of the electrodes. Herein, we propose an aqueous Na-ion battery which includes a Ni-based Prussian blue(NiHCF) cathode, a carbonyl-based organic compound, 5,7,12,14-pentacenetetrone(PT)anode and a “water-in-salt” electrolyte(17 mol kg^(-1)NaClO_(4)in water). Its operation involves the reversible coordination reaction of the PT anode and the extraction/insertion of Na;in the NiHCF cathode. It is demonstrated that the wide internal spaces of the PT anode and NiHCF cathode can not only buffer the volumetric change induced by Na;storage, but also enable fast kinetics. The full cell exhibits a supercapacitor-like rate performance of 50 A g^(-1)(corresponding to a discharge or charge within 6.3 s)and a super-long lifespan of 15,000 cycles. Moreover, the excellent rate performance can still be preserved even with a high mass loading of the electrodes(15 mgNiHCFcm^(-2)and 8 mgPTcm^(-2)).Especially, the cell can work well in a wide temperature range, from-40 to 100 °C, showing a typical all-climate operation.
