RESUMO
Lithium (Li) metal batteries have attracted considerable research attention due to their exceptionally high theoretical capacity. However, the commercialization of Li metal batteries faces challenges, primarily attributed to uncontrolled growth of Li dendrites, which raises safety concerns and lowers coulombic efficiency. To mitigate Li dendrites growth and attain dense Li deposition, the hybrid SiO2-Cu2O lithiophilic film applied to a 3D copper foam current collector is developed to regulate the interfacial properties for achieving even and dense Li deposition. The SiO2-Cu2O possesses strong Li+ trapping capability through strong lithiophilicity from Cu2O. Additionally, the SiO2-Cu2O enables uniform ion diffusion through the domain-limiting effect of the holes in the SiO2 layer, inducing an even and dense Li plating/stripping behavior at a large capacity. Furthermore, the SiO2 layer promotes the formation of an initial high inorganic content Solid Electrolyte Interphase (SEI) through selective preferential binding with anion and solvent molecules. When the SiO2-Cu2O@Li anode is coupled with a LiFePO4 (LFP) cathode, the resulting full cell exhibits superior cycling stability and rate performance. These results provide a facile approach to construct a lithiophilic current collector for practical Li metal anodes.
RESUMO
Objective To explore the association between type 2 diabetes mellitus (T2DM)combined with non -alcoholic fatty liver disease (NAFLD)and serum adiponectin (APN)and its clinical significance.Methods A total of 76 patients who were initially diagnosed with T2DM or had been diagnosed with T2DM for less than three years and admitted to the endocrine department and its outpatient clinic of the Affiliated Hospital of Medical School of Ningbo University from August 2011 to July 2013 were selected as the subjects,and were assigned to group A or B,each consisting of 38 patients,based on the presence or absence of associated NAFLD.Another 30 healthy subjects receiving physical examination were assigned to the control group (NC group).The indicators including body mass index (BMI),blood lipids,blood glucose,liver function,insulin resistance index (HOMA -IR)and serum APN,were measured and compared among the groups. Results In group A ,the indicators including BMI,triglyceride (TG),total cholesterol (TC),low density lipoprotein -cholesterol (LDL -C),alanine aminotransferase (ALT),fasting insulin (FINS)and HOMA -IR were significantly higher than those in group B and NC group,and the APN level was significantly lower than that in group B and NC group (P <0.05).Pearson correlation analysis indicated that APN was negatively correlated with BMI,TG,high density lipoprotein -cholesterol(HDL -C),and HOMA -IR,and positively correlated with TC,LDL -C and ALT(P <0.05).Multiple linear regression analysis suggested that HDL -C and HOMA -IR was the independent influencing factors for APN (P <0.05).Conclusion Severe insulin resistance and glucose and lipid metabolic disorders are present in T2DM patients combined with NAFLD,and adiponectin level is of vital significance for the development and progression of NAFLD.
RESUMO
<p><b>BACKGROUND</b>Fractional flow reserve (FFR) has become an increasingly important index when making decisions with respect to revascularization of coronary artery stenosis. However, the pressure guidewire used in obtaining FFR measurements is difficult to control and manipulate in certain complex coronary artery lesions, resulting in increased fluoroscopy time and contrast dye usage. This study examined a novel (NOV) technique for obtaining FFR measurements in hope of easing the difficulties associated with evaluating and treating complex coronary artery lesions.</p><p><b>METHODS</b>Fifty-six patients with complex coronary artery lesions were assigned to a conventional (CON) FFR technique group or a NOV FFR technique group. The NOV technique involved the use of a balloon and wire exchange within the coronary artery. The fluoroscopy time, contrast dye usage, and FFR-related complications were assessed after completing the FFR measurement procedure for each patient.</p><p><b>RESULTS</b>The median time required for fluoroscopy in the NOV technique group was significantly less than that in the CON technique group; additionally, lesser amounts of contrast dye were used in the NOV technique group (both P < 0.05). The NOV technique was successfully performed in thirty patients, without any FFR-related complications. However, the CON technique failed in three patients, including two who experienced coronary artery spasms (P > 0.05).</p><p><b>CONCLUSIONS</b>Compared to the CON technique used for measuring FFR, the new technique reduced the fluoroscopy time and amount of contrast dye used when evaluating complex coronary artery lesions. The new technique did not increase the risk of operation or decrease the success rate.</p>