Tungsten telluride thin films were successfully prepared on monocrystal sapphire substrates by using atomic layer de-position and chemical vapor deposition technology,and the effects of different tellurization tempera...Tungsten telluride thin films were successfully prepared on monocrystal sapphire substrates by using atomic layer de-position and chemical vapor deposition technology,and the effects of different tellurization temperatures on the properties of tungsten telluride films were investigated.The growth rate,crystal structure and composition of the film samples were character-ized and analyzed by using scanning electron microscope,Raman spectroscopy and X-ray photoelectron spectroscopy.The res-ults showed that tungsten telluride thin films with good crystal orientation in(001)were obtained at telluride temperature of 550℃.When the telluride temperature reached 570℃,the tungsten telluride began to decompose and unsaturated mag-netoresistance was found.展开更多
Background:Current practice uses the latest measure of glycated hemoglobin(HbAlc)to facilitate clinical decision-making.Studies have demonstrated that HbAlc variability links the risk of death and complications of dia...Background:Current practice uses the latest measure of glycated hemoglobin(HbAlc)to facilitate clinical decision-making.Studies have demonstrated that HbAlc variability links the risk of death and complications of diabetes.However,the role of HbAlc variability is unclear in clinical practice.This systematic review summarized the evidence of visit-to-visit HbAlc variability regarding different metrics in micro-and macro-vascular complications and death in people with type 2 diabetes.Methods:We searched PubMed,EMBASE(via OVID),and Cochrane Central Register(CENTRAL,via OVID)for studies investigating the association between HbAlc variability and adverse outcomes in patients with type 2 diabetes and performed random-effects meta-analysis stratified by HbAlc variability metrics in terms of standard deviation(SD),coefficient of variation(CV),and HbAlc variability score(HVS).Results:In people with type 2 diabetes,the highest quantile of all three HbAlc variability metrics(HbAlc-standard deviation[HbAlc-SD],HbAlc-coefficient of variance[HbAlc-CV],and HVS)is associated with increased risks of all-cause mortality,cardiovascular events,progression to chronic kidney disease,amputation,and peripheral neuropathy.For example,the hazard ratio of HbAlc-SD on all-cause mortality was 1.89 with 95%confidence interval(95%CI)1.46–2.45(HbAlc-CV 1.47,95%CI 1.26-1.72;HVS 1.67,95%CI 1.34–2.09).Conclusions:High HbAlc variability leads to micro-and macro-vascular complications of type 2 diabetes and related death.People with type 2 diabetes and high HbAlc variability need additional attention and care for the potential adverse outcomes.展开更多
Dear Editor,Recently,the World Health Organization(WHO)declared monkeypox as a Public Health Emergency of International Concern(PHEIC),another one after the last PHEIC of COVID-19 announced in early 2020.1 Unlike the ...Dear Editor,Recently,the World Health Organization(WHO)declared monkeypox as a Public Health Emergency of International Concern(PHEIC),another one after the last PHEIC of COVID-19 announced in early 2020.1 Unlike the new SARS-CoV-2 virus that has multiple variants,monkeypox virus is a DNA virus first identified in 1958 with no evidence of significant mutation of its sequence.展开更多
基金supported by the National Key Research and Development Program of China(No.2018YFA0704804)Chinese Academy of Sciences Research Instruments and Equipment Development Project(No.ZDKYYQ20220001)。
文摘Tungsten telluride thin films were successfully prepared on monocrystal sapphire substrates by using atomic layer de-position and chemical vapor deposition technology,and the effects of different tellurization temperatures on the properties of tungsten telluride films were investigated.The growth rate,crystal structure and composition of the film samples were character-ized and analyzed by using scanning electron microscope,Raman spectroscopy and X-ray photoelectron spectroscopy.The res-ults showed that tungsten telluride thin films with good crystal orientation in(001)were obtained at telluride temperature of 550℃.When the telluride temperature reached 570℃,the tungsten telluride began to decompose and unsaturated mag-netoresistance was found.
基金National Key R&D Program of China(No.2018YFC2SSlSSX)the 1.3.5 Project for Disciplines of Excellence,West China Hospital,Sichuan University(Nos.ZYGD18022 and 20HXFH011)。
文摘Background:Current practice uses the latest measure of glycated hemoglobin(HbAlc)to facilitate clinical decision-making.Studies have demonstrated that HbAlc variability links the risk of death and complications of diabetes.However,the role of HbAlc variability is unclear in clinical practice.This systematic review summarized the evidence of visit-to-visit HbAlc variability regarding different metrics in micro-and macro-vascular complications and death in people with type 2 diabetes.Methods:We searched PubMed,EMBASE(via OVID),and Cochrane Central Register(CENTRAL,via OVID)for studies investigating the association between HbAlc variability and adverse outcomes in patients with type 2 diabetes and performed random-effects meta-analysis stratified by HbAlc variability metrics in terms of standard deviation(SD),coefficient of variation(CV),and HbAlc variability score(HVS).Results:In people with type 2 diabetes,the highest quantile of all three HbAlc variability metrics(HbAlc-standard deviation[HbAlc-SD],HbAlc-coefficient of variance[HbAlc-CV],and HVS)is associated with increased risks of all-cause mortality,cardiovascular events,progression to chronic kidney disease,amputation,and peripheral neuropathy.For example,the hazard ratio of HbAlc-SD on all-cause mortality was 1.89 with 95%confidence interval(95%CI)1.46–2.45(HbAlc-CV 1.47,95%CI 1.26-1.72;HVS 1.67,95%CI 1.34–2.09).Conclusions:High HbAlc variability leads to micro-and macro-vascular complications of type 2 diabetes and related death.People with type 2 diabetes and high HbAlc variability need additional attention and care for the potential adverse outcomes.
文摘Dear Editor,Recently,the World Health Organization(WHO)declared monkeypox as a Public Health Emergency of International Concern(PHEIC),another one after the last PHEIC of COVID-19 announced in early 2020.1 Unlike the new SARS-CoV-2 virus that has multiple variants,monkeypox virus is a DNA virus first identified in 1958 with no evidence of significant mutation of its sequence.
