Driven by the accelerating global aging population and increasing health consciousness, compression stocking market is experiencing rapid growth. According to the latest data from Grand View Research, the global compr...Driven by the accelerating global aging population and increasing health consciousness, compression stocking market is experiencing rapid growth. According to the latest data from Grand View Research, the global compression therapy market reached $4.25 billion in 2024, with medical compression stockings, as a core segment, boasting a compound annual growth rate(CAGR) of nearly 6%.展开更多
Three perovskite-type catalysts prepared by citric acid method are applied to remove phenol from gas streams with the total flow rate of 300 mL/min, corresponding to a GHSV of 10,000/hr. LaMnO3 catalyst is first prepa...Three perovskite-type catalysts prepared by citric acid method are applied to remove phenol from gas streams with the total flow rate of 300 mL/min, corresponding to a GHSV of 10,000/hr. LaMnO3 catalyst is first prepared and further partially substituted with Sr and Cu to prepare Lao.sSro.2MnO3 and Lao.sSro.2Mno.sCuo.203, and catalytic activities and fundamen- tal characteristics of these three catalysts are compared. The results show that phenol removal efficiency achieved with Lao.sSro.2Mno.sCuo.203 reaches 100% with the operating temperature of 200℃ and the rate of mineralization at 300℃ is up to 100%, while the phenol removal efficiencies achieved with Lao.sSro.2MnO3 and LaMnO3 are up to 100% with the operating temperature of 300℃ and 400℃, respectively. X-ray photoelectron spectroscopy （XPS） analysis shows that the addition of Sr and Cu increases the lattice oxygen of Lao.sSro.2Mno.sCuo.203, and further increases mobility or availability of lattice oxygen. The results indicate that Lao.sSro.2Mno.sCuo.203 has the best activity for phenol removal among three catalysts prepared and the catalytic activity of phenol oxidation is enhanced by the introduction of Sr and Cu into LaMnO3. Apparent activation energy of 48 kJ/mol is calculated by Mars-Van Krevelen Model for phenol oxidation with Lao.sSro.2Mno.sCuo.203 as catalyst.展开更多
The kinetics of ternary complex formation involving Cu(5-X-1, 10-phen) and threonine (CuAL, A=5-X-1, 10-phen; L=threonine or represented by O-N; X=NO_2, Cl, H, CH_3) has been studied by temperature-jump and stopped-fl...The kinetics of ternary complex formation involving Cu(5-X-1, 10-phen) and threonine (CuAL, A=5-X-1, 10-phen; L=threonine or represented by O-N; X=NO_2, Cl, H, CH_3) has been studied by temperature-jump and stopped-flow methods. The formation rate constants, k_f(M^(-1).s^(-1)), for the complexation reaction, CuA + LCuAL, are as follows; X=NO_2, 8.68×10~8; X=Cl, 7.13×10~8; X=H, 6.12×10~8; X=CH_3, 5.42×10~8. The rate constants for zwitterion attack are nil within experimental error. It has been found that a linear free energy relationship exists between the stability(logK_(CuAL)^(CuA) of the complexes CuAL and log kf as follows: IogK_(CuAL)^(CuA)=0.13 + 0.83 logk_f, r=0.99. It suggested that the formation rate governed the stability of the ternary complexes. The rates of formation of the ternary complexes increased with decreasing electron-donating property of the substituents. A linear relationship was found to exist as expressed by the following equation: log(k_f^R/k_F^O) = 0.097σ, r=0.96. A mechanism involves a rapid equilibrium between CuA and L followed by a slow ring closure of L.展开更多
Innovation Driving Transformation:The year 2024 marked a critical juncture for robotics,particularly in the realm of medical applications.As highlighted in this issue,innovations such as robot-assisted embolization te...Innovation Driving Transformation:The year 2024 marked a critical juncture for robotics,particularly in the realm of medical applications.As highlighted in this issue,innovations such as robot-assisted embolization technologies and bio-integrated microrobots(BIMs)[1]are transitioning from experimental prototypes to clinical solutions,promising to revolutionize minimally invasive procedures.The medical robotics market is projected to grow at a compound annual growth rate(CAGR)of 16.20%[2],underscoring the urgency for robust ethical frameworks and international standards.SmartBot is committed to addressing these challenges by fostering dialogue between researchers,policymakers,and industry leaders(Figure 1).展开更多
文摘Driven by the accelerating global aging population and increasing health consciousness, compression stocking market is experiencing rapid growth. According to the latest data from Grand View Research, the global compression therapy market reached $4.25 billion in 2024, with medical compression stockings, as a core segment, boasting a compound annual growth rate(CAGR) of nearly 6%.
基金Ministry of Science and Technology(MOST),R.O.C.(Grant No-MOST102-2221-E-008-003-MY3)National Central University(10221046)
文摘Three perovskite-type catalysts prepared by citric acid method are applied to remove phenol from gas streams with the total flow rate of 300 mL/min, corresponding to a GHSV of 10,000/hr. LaMnO3 catalyst is first prepared and further partially substituted with Sr and Cu to prepare Lao.sSro.2MnO3 and Lao.sSro.2Mno.sCuo.203, and catalytic activities and fundamen- tal characteristics of these three catalysts are compared. The results show that phenol removal efficiency achieved with Lao.sSro.2Mno.sCuo.203 reaches 100% with the operating temperature of 200℃ and the rate of mineralization at 300℃ is up to 100%, while the phenol removal efficiencies achieved with Lao.sSro.2MnO3 and LaMnO3 are up to 100% with the operating temperature of 300℃ and 400℃, respectively. X-ray photoelectron spectroscopy （XPS） analysis shows that the addition of Sr and Cu increases the lattice oxygen of Lao.sSro.2Mno.sCuo.203, and further increases mobility or availability of lattice oxygen. The results indicate that Lao.sSro.2Mno.sCuo.203 has the best activity for phenol removal among three catalysts prepared and the catalytic activity of phenol oxidation is enhanced by the introduction of Sr and Cu into LaMnO3. Apparent activation energy of 48 kJ/mol is calculated by Mars-Van Krevelen Model for phenol oxidation with Lao.sSro.2Mno.sCuo.203 as catalyst.
文摘The kinetics of ternary complex formation involving Cu(5-X-1, 10-phen) and threonine (CuAL, A=5-X-1, 10-phen; L=threonine or represented by O-N; X=NO_2, Cl, H, CH_3) has been studied by temperature-jump and stopped-flow methods. The formation rate constants, k_f(M^(-1).s^(-1)), for the complexation reaction, CuA + LCuAL, are as follows; X=NO_2, 8.68×10~8; X=Cl, 7.13×10~8; X=H, 6.12×10~8; X=CH_3, 5.42×10~8. The rate constants for zwitterion attack are nil within experimental error. It has been found that a linear free energy relationship exists between the stability(logK_(CuAL)^(CuA) of the complexes CuAL and log kf as follows: IogK_(CuAL)^(CuA)=0.13 + 0.83 logk_f, r=0.99. It suggested that the formation rate governed the stability of the ternary complexes. The rates of formation of the ternary complexes increased with decreasing electron-donating property of the substituents. A linear relationship was found to exist as expressed by the following equation: log(k_f^R/k_F^O) = 0.097σ, r=0.96. A mechanism involves a rapid equilibrium between CuA and L followed by a slow ring closure of L.
文摘Innovation Driving Transformation:The year 2024 marked a critical juncture for robotics,particularly in the realm of medical applications.As highlighted in this issue,innovations such as robot-assisted embolization technologies and bio-integrated microrobots(BIMs)[1]are transitioning from experimental prototypes to clinical solutions,promising to revolutionize minimally invasive procedures.The medical robotics market is projected to grow at a compound annual growth rate(CAGR)of 16.20%[2],underscoring the urgency for robust ethical frameworks and international standards.SmartBot is committed to addressing these challenges by fostering dialogue between researchers,policymakers,and industry leaders(Figure 1).
