This paper evaluates and discusses ways to use five energy resources more efficiently for generating electric power. An analysis of five different 10 MW powerplants was made</span></span><span style=&qu...This paper evaluates and discusses ways to use five energy resources more efficiently for generating electric power. An analysis of five different 10 MW powerplants was made</span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;">:</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;"> a photovoltaic system, a concentrated solar power system, wind turbines, a natural gas combined cycle and an integrated solar combined cycle. Also, each power plant’s operating principle, thermodynamic analysis, economic analysis, and simulation evaluation w</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;">ere</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;"> made using the System Advisor Model (SAM), Engineering Equation Solver (EES), and the Thermoflow Power Plant Simulation program. From the analysis, the power plant capacity factor, grid availability, levelized cost of electricity, and annual energy production are compared and analyzed to determine a suitable power plant for a given location.展开更多
Complex concentrated alloys(CCAs)containing the L2_(1)phase are recognized for their exceptional strength and thermal stability,positioning them as strong candidates for transformative applications in aerospace,energy...Complex concentrated alloys(CCAs)containing the L2_(1)phase are recognized for their exceptional strength and thermal stability,positioning them as strong candidates for transformative applications in aerospace,energy,and structural sectors.This investigation delves into the AlFexNiTiV_(40-x)(x=0,10,20,30,35,40;at%)CCAs,aiming to unlock the synergistic potential of BCC and L2_(1)phases.By conducting an in-depth analysis of microstructure,phase behavior,and mechanical properties,the intricate relationships between chemistry,structure,and properties are illuminated within this alloy system.The Al_(15)Fe_(35)Ni_(3)0Ti_(15)V_(5)alloy demonstrates remarkable mechanical properties,achieving a yield strength of 2140.9 MPa and ultimate compressive strength of 2699.7 MPa,primarily through solid solution strengthening and precipitation hardening.Notably,its low lattice mismatches and nanoprecipitate strengthening yield an impressive specific yield strength at 600℃(245.2 MPa(g·cm^(-3))^(-1)).Phase modulation achieves the synergistic optimization of specific strengths at both room and high temperatures in CCAs containing the L2_(1)phase,opening new avenues for designing advanced lightweight and high strength alloys for elevated-temperature applications.展开更多
BACKGROUND Compared to standard hospital meals,nutritional intervention using recovery K5(RK5),a concentrated liquid diet,offers a comprehensive immunonutritional profile,suggesting its potential effectiveness in prev...BACKGROUND Compared to standard hospital meals,nutritional intervention using recovery K5(RK5),a concentrated liquid diet,offers a comprehensive immunonutritional profile,suggesting its potential effectiveness in preventing surgical site infections(SSIs)after gastrointestinal surgery.AIM To investigate the usefulness of RK5 in patients undergoing elective colorectal cancer surgery,focusing on postoperative infections and nutritional status.METHODS This single-center,open-label,randomized,parallel-group comparative trial was conducted at Department of Gastrointestinal Surgery,Nippon Medical School Hospital,between February 2023 and August 2024.Forty patients with colorectal cancer were randomly assigned in a 1:1 ratio to either the nutritional intervention or the control group.The intervention group received 800 kcal/day of RK5 administered orally instead of breakfast and dinner(400 kcal per serving)2 days prior to surgery,whereas the control group received only standard meals.Postoperative infection,nutritional status,and bowel habits were assessed.RESULTS No cases of remote infection were observed.SSIs occurred in one of the 17 patients(5.9%)in the intervention group and six of the 18 patients(33.3%)in the control group,with an odds ratio of 0.125(95%confidence interval:0.013-1.181,P=0.0695).Energy intake and percentage of target energy intake were significantly higher in the intervention group.No significant differences were observed betShinji S et al.RK5 in colorectal cancer surgery WJGS https://www.wjgnet.com 2 November 27,2025 Volume 17 Issue 11 ween the two groups regarding nutritional status,bowel movement frequency,or the incidence of diarrhea.CONCLUSION Supplemental nutrition using RK5 may help prevent SSIs in patients undergoing elective colorectal cancer surgery and should be considered as a potential option for perioperative nutritional management.展开更多
Zinc perchlorate(Zn(ClO_(4))_(2))electrolytes have demonstrated favorable low-temperature performance in aqueous zinc-ion batteries(AZIBs).However,the Zn anode encounters serious dendrite formation and parasitic react...Zinc perchlorate(Zn(ClO_(4))_(2))electrolytes have demonstrated favorable low-temperature performance in aqueous zinc-ion batteries(AZIBs).However,the Zn anode encounters serious dendrite formation and parasitic reactions in zinc perchlorate electrolytes,which is caused by the fast corrosive kinetics at room temperature.Herein,a concentrated perchlorate-based electrolyte consisting of 4.0 M Zn(ClO_(4))_(2)and saturated NaClO_(4)solution is developed to achieve dendrite-free and stable AZIBs at room temperature.The ClO_(4)−participates in the primary solvation sheath of Zn^(2+),facilitating the in situ formation of Zn_(5)(OH)_(8)Cl_(2)·H_(2)O-rich solid electrolyte interphase(SEI)to suppress the corrosion effect of ClO_(4)^(−).The Zn anode protected by the SEI achieves stable Zn plating/stripping over 3000 h.Furthermore,the MnO_(2)||Zn full cells manifest a stable specific capacity of 200 mAh·g^(−1)at 28℃and 101 mAh·g^(−1)at−20℃.This work introduces a promising approach for boosting the room-temperature performance of perchlorate-based electrolytes for AZIBs.展开更多
Concentrating Solar Power(CSP)is one of the most promising solar technologies for sustainable power generation in countrieswith high solar potential,likeChad.Identifying suitable sites is of great importance for deplo...Concentrating Solar Power(CSP)is one of the most promising solar technologies for sustainable power generation in countrieswith high solar potential,likeChad.Identifying suitable sites is of great importance for deploying solar power plants.This work focuses on the identification of potential sites for the installation of solar power plants in Chad as well as a comparative analysis using the Analytical Hierarchy Process(AHP),Fuzzy Analytical Hierarchy Process(FAHP),and Full Consistency Method(FUCOM).The results show that 35%of the Chadian territory,i.e.,an area of 449,400 km2,is compatible with the implementation of Concentrating Solar Power.The North,North,East,Southeast,and East zones are the most suitable.The main criteria for influence are direct normal irradiation,the soil slope,and the water resource.FUCOM gave a weight of 41.9%for Direct Normal Irradiation(DNI)compared to 32.71%and 31.81%for AHP and FAHP.This method can be applied to other renewable energy technologies such as photovoltaics,wind power,and biomass.Combining its different analyses will be a valuable tool for planning any renewable energy project in Chad.This work should also facilitate the techno-economic analysis of future CSP plants in Chad.展开更多
针对传统机组运行约束挤压风电并网空间及固体废弃物堆存量激增造成的环境污染问题,配置光热电站与电加热联合运行促进风电消纳,引入垃圾焚烧电厂与电转气联合运行实现CO_(2)再利用,提出一种含光热电站(concentrating solar power plant...针对传统机组运行约束挤压风电并网空间及固体废弃物堆存量激增造成的环境污染问题,配置光热电站与电加热联合运行促进风电消纳,引入垃圾焚烧电厂与电转气联合运行实现CO_(2)再利用,提出一种含光热电站(concentrating solar power plant,CSP)及垃圾焚烧电厂(waste to energy plant,WTE)的虚拟电厂低碳优化调度模型。基于非参数核密度估计和Frank-Copula函数构建风电和光热电站出力联合分布模型,并利用蜉蝣优化K-means聚类算法得到典型场景;构建电加热与光热电站联合运行模型,并在垃圾焚烧-电转气精细化碳利用模型的基础上,引入阶梯碳交易机制进一步约束系统碳排放;以虚拟电厂总运行成本最低为目标,提出一种基于混合策略改进的水循环算法进行求解。仿真结果表明,所建立模型能够有效促进风电消纳并降低系统碳排放。展开更多
文摘This paper evaluates and discusses ways to use five energy resources more efficiently for generating electric power. An analysis of five different 10 MW powerplants was made</span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;">:</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;"> a photovoltaic system, a concentrated solar power system, wind turbines, a natural gas combined cycle and an integrated solar combined cycle. Also, each power plant’s operating principle, thermodynamic analysis, economic analysis, and simulation evaluation w</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;">ere</span></span></span><span style="font-size:12px;font-family:Verdana;"><span style="font-size:12px;font-family:Verdana;"><span style="font-family:Verdana;font-size:12px;"> made using the System Advisor Model (SAM), Engineering Equation Solver (EES), and the Thermoflow Power Plant Simulation program. From the analysis, the power plant capacity factor, grid availability, levelized cost of electricity, and annual energy production are compared and analyzed to determine a suitable power plant for a given location.
基金supported by the National Natural Science Foundation of China(Nos.52301043 and 51871077)Guangdong Basic and Applied Basic Research Foundation(No.2021A1515012626),Shenzhen Knowledge Innovation Plan-Fundamental Research(Discipline Distribution)(No.JCYJ20180507184623297)+1 种基金Shenzhen Science and Technology Plan-Technology Innovation(No.KQJSCX20180328165656256)the Startup Foundation from Shenzhen(Nos.NA25501001,and NA11409005).
文摘Complex concentrated alloys(CCAs)containing the L2_(1)phase are recognized for their exceptional strength and thermal stability,positioning them as strong candidates for transformative applications in aerospace,energy,and structural sectors.This investigation delves into the AlFexNiTiV_(40-x)(x=0,10,20,30,35,40;at%)CCAs,aiming to unlock the synergistic potential of BCC and L2_(1)phases.By conducting an in-depth analysis of microstructure,phase behavior,and mechanical properties,the intricate relationships between chemistry,structure,and properties are illuminated within this alloy system.The Al_(15)Fe_(35)Ni_(3)0Ti_(15)V_(5)alloy demonstrates remarkable mechanical properties,achieving a yield strength of 2140.9 MPa and ultimate compressive strength of 2699.7 MPa,primarily through solid solution strengthening and precipitation hardening.Notably,its low lattice mismatches and nanoprecipitate strengthening yield an impressive specific yield strength at 600℃(245.2 MPa(g·cm^(-3))^(-1)).Phase modulation achieves the synergistic optimization of specific strengths at both room and high temperatures in CCAs containing the L2_(1)phase,opening new avenues for designing advanced lightweight and high strength alloys for elevated-temperature applications.
文摘BACKGROUND Compared to standard hospital meals,nutritional intervention using recovery K5(RK5),a concentrated liquid diet,offers a comprehensive immunonutritional profile,suggesting its potential effectiveness in preventing surgical site infections(SSIs)after gastrointestinal surgery.AIM To investigate the usefulness of RK5 in patients undergoing elective colorectal cancer surgery,focusing on postoperative infections and nutritional status.METHODS This single-center,open-label,randomized,parallel-group comparative trial was conducted at Department of Gastrointestinal Surgery,Nippon Medical School Hospital,between February 2023 and August 2024.Forty patients with colorectal cancer were randomly assigned in a 1:1 ratio to either the nutritional intervention or the control group.The intervention group received 800 kcal/day of RK5 administered orally instead of breakfast and dinner(400 kcal per serving)2 days prior to surgery,whereas the control group received only standard meals.Postoperative infection,nutritional status,and bowel habits were assessed.RESULTS No cases of remote infection were observed.SSIs occurred in one of the 17 patients(5.9%)in the intervention group and six of the 18 patients(33.3%)in the control group,with an odds ratio of 0.125(95%confidence interval:0.013-1.181,P=0.0695).Energy intake and percentage of target energy intake were significantly higher in the intervention group.No significant differences were observed betShinji S et al.RK5 in colorectal cancer surgery WJGS https://www.wjgnet.com 2 November 27,2025 Volume 17 Issue 11 ween the two groups regarding nutritional status,bowel movement frequency,or the incidence of diarrhea.CONCLUSION Supplemental nutrition using RK5 may help prevent SSIs in patients undergoing elective colorectal cancer surgery and should be considered as a potential option for perioperative nutritional management.
基金supported by Hainan Provincial Joint Project of Sanya Yazhou Bay Science and Technology City(No.2021JJLH0069)the Project of Sanya Yazhou Bay Science and Technology City(No.SCKJ-JYRC-2023-55)Hainan Provincial Natural Science Foundation of China(No.522CXTD516).
文摘Zinc perchlorate(Zn(ClO_(4))_(2))electrolytes have demonstrated favorable low-temperature performance in aqueous zinc-ion batteries(AZIBs).However,the Zn anode encounters serious dendrite formation and parasitic reactions in zinc perchlorate electrolytes,which is caused by the fast corrosive kinetics at room temperature.Herein,a concentrated perchlorate-based electrolyte consisting of 4.0 M Zn(ClO_(4))_(2)and saturated NaClO_(4)solution is developed to achieve dendrite-free and stable AZIBs at room temperature.The ClO_(4)−participates in the primary solvation sheath of Zn^(2+),facilitating the in situ formation of Zn_(5)(OH)_(8)Cl_(2)·H_(2)O-rich solid electrolyte interphase(SEI)to suppress the corrosion effect of ClO_(4)^(−).The Zn anode protected by the SEI achieves stable Zn plating/stripping over 3000 h.Furthermore,the MnO_(2)||Zn full cells manifest a stable specific capacity of 200 mAh·g^(−1)at 28℃and 101 mAh·g^(−1)at−20℃.This work introduces a promising approach for boosting the room-temperature performance of perchlorate-based electrolytes for AZIBs.
文摘Concentrating Solar Power(CSP)is one of the most promising solar technologies for sustainable power generation in countrieswith high solar potential,likeChad.Identifying suitable sites is of great importance for deploying solar power plants.This work focuses on the identification of potential sites for the installation of solar power plants in Chad as well as a comparative analysis using the Analytical Hierarchy Process(AHP),Fuzzy Analytical Hierarchy Process(FAHP),and Full Consistency Method(FUCOM).The results show that 35%of the Chadian territory,i.e.,an area of 449,400 km2,is compatible with the implementation of Concentrating Solar Power.The North,North,East,Southeast,and East zones are the most suitable.The main criteria for influence are direct normal irradiation,the soil slope,and the water resource.FUCOM gave a weight of 41.9%for Direct Normal Irradiation(DNI)compared to 32.71%and 31.81%for AHP and FAHP.This method can be applied to other renewable energy technologies such as photovoltaics,wind power,and biomass.Combining its different analyses will be a valuable tool for planning any renewable energy project in Chad.This work should also facilitate the techno-economic analysis of future CSP plants in Chad.
文摘针对传统机组运行约束挤压风电并网空间及固体废弃物堆存量激增造成的环境污染问题,配置光热电站与电加热联合运行促进风电消纳,引入垃圾焚烧电厂与电转气联合运行实现CO_(2)再利用,提出一种含光热电站(concentrating solar power plant,CSP)及垃圾焚烧电厂(waste to energy plant,WTE)的虚拟电厂低碳优化调度模型。基于非参数核密度估计和Frank-Copula函数构建风电和光热电站出力联合分布模型,并利用蜉蝣优化K-means聚类算法得到典型场景;构建电加热与光热电站联合运行模型,并在垃圾焚烧-电转气精细化碳利用模型的基础上,引入阶梯碳交易机制进一步约束系统碳排放;以虚拟电厂总运行成本最低为目标,提出一种基于混合策略改进的水循环算法进行求解。仿真结果表明,所建立模型能够有效促进风电消纳并降低系统碳排放。
