Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network act...Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer deposition.This optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture capability.This approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.展开更多
目的探讨重组人促红细胞生成素(recombinant human erythropoietin,rHuEPO)联合铁剂纠正老年股骨转子间骨折患者围术期贫血的疗效。方法回顾分析2016年4月-2017年10月符合选择标准的71例老年股骨转子间骨折患者临床资料,均行闭合复位股...目的探讨重组人促红细胞生成素(recombinant human erythropoietin,rHuEPO)联合铁剂纠正老年股骨转子间骨折患者围术期贫血的疗效。方法回顾分析2016年4月-2017年10月符合选择标准的71例老年股骨转子间骨折患者临床资料,均行闭合复位股骨近端髓内钉固定治疗。其中31例术前应用rHuEPO联合铁剂纠正贫血(试验组),40例未使用rHuEPO及铁剂(对照组)。两组患者性别、年龄、体质量指数、致伤原因、骨折侧别及分型、美国麻醉医师协会(ASA)分级、合并内科疾病、骨折至入院时间、术前住院时间以及手术时间比较,差异均无统计学意义(P>0.05)。记录两组患者入院时及术后1、3、7 d血红蛋白水平,术后输血患者例数并计算输血率,术后输血量,术后并发症发生情况以及术后住院时间。结果术后试验组8例(25.8%)、对照组22例(55.0%)输血,试验组输血量为(1.96±0.85)U,明显低于对照组的(3.19±1.61)U;两组输血率及输血量比较差异均有统计学意义(P<0.05)。两组术前血红蛋白水平比较,差异无统计学意义(P>0.05);术后试验组均高于对照组,其中术后7 d差异有统计学意义(P<0.05)。试验组术后住院时间为(6.16±3.97)d,较对照组的(9.25±4.47)d明显缩短(P<0.05)。术后试验组8例(25.8%)、对照组14例(35.0%)发生肺部感染,试验组6例(19.4%)、对照组8例(20.0%)发生下肢深静脉血栓形成,并发症发生率差异均无统计学意义(P>0.05)。所有患者均正常出院,住院期间无死亡。结论老年股骨转子间骨折患者术前应用rHuEPO联合铁剂能快速提高术后血红蛋白水平,缩短住院时间,而且不增加术后下肢深静脉血栓形成发生风险。展开更多
Laser directed energy deposition(LDED)is an emerging branch of metal-based additive manufacturing(AM)processes,offering unprecedented capabilities for high-performance fabrication with complex geometries and near-net ...Laser directed energy deposition(LDED)is an emerging branch of metal-based additive manufacturing(AM)processes,offering unprecedented capabilities for high-performance fabrication with complex geometries and near-net shapes.This technology is gathering increasing attention from industries such as biomedical,automotive,and aerospace.However,achieving consistent part quality and desired material properties is challenging due to intricate processing parameters and potential process defects such as dynamic melt-pool behavior and localized heat accumulation.This paper reviews recent advances in on-line quality control,focusing on in-situ measurement and closed-loop control for efficient assurance of LDED-fabricated parts.The quality principles,encompassing accuracy and material performance,are summarized to lay a foundation for understanding the mechanisms of quality defects and influencing factors.This review explores and thoroughly compares advancements in indirect process measurements,such as optical,thermal,and acoustic monitoring with direct quality measurements,including laser-line scanning and operando synchrotron X-ray imaging.Depending on the sensing techniques,this paper highlights a hierarchical control strategy for adaptive parameter regulation on intra-layer and inter-layer scales.The requirements and performance of various state-of-the-art controllers are critically compared to indicate their suitable applications.The importance of machine learning in detecting process anomalies and predicting build quality based on sensory signals is also outlined.Future directions are proposed towards adaptive,automated,and intelligent quality control,with a focus on multi-modal monitoring,physics-informed neural networks for interpretable analysis,and multi-objective control applications.展开更多
Photocatalytic H_(2)production from water splitting is a promising candidate for solving the increasing energy crisis and environmental issues.Herein we report a novel g-C_(3)N_(4)/Ag In_(x)S_(y)S-scheme heterojunctio...Photocatalytic H_(2)production from water splitting is a promising candidate for solving the increasing energy crisis and environmental issues.Herein we report a novel g-C_(3)N_(4)/Ag In_(x)S_(y)S-scheme heterojunction photocatalyst for water splitting into stoichiometric H_(2)and H_(2)O_(2)under visible light.The catalyst was prepared by depositing 3D bimetallic sulfide(Ag In_(x)S_(y))nanotubes onto 2D g-C_(3)N_(4)nanosheets.Owing to the special 3D-on-2D configuration,the photogenerated carriers could be rapidly transferred and effectively separated through the abundant interfacial heterostructures to avoid recombination,and therefore excellent performance for visible light-driven water splitting could be obtained,with a 24-h H_(2)evolution rate up to 237μmol g^(-1)h^(-1).Furthermore,suitable band alignment enables simultaneous H_(2)and H_(2)O_(2)production in a 1:1 stoichiometric ratio.H_(2)and H_(2)O_(2)were evolved on the conduction band of g-C_(3)N_(4)and on the valance band of Ag In_(x)S_(y),respectively.The novel 3D-on-2D configuration for heterojunction construction proposed in this work provided alternative research ideas toward photocatalytic reaction.展开更多
基金Technology Development Program of Jilin Province(YDZJ202201ZYTS640)the National Key Research and Development Program of China(2022YFB4200400)funded by MOST+4 种基金the National Natural Science Foundation of China(52172048 and 52103221)Shandong Provincial Natural Science Foundation(ZR2021QB024 and ZR2021ZD06)Guangdong Basic and Applied Basic Research Foundation(2023A1515012323,2023A1515010943,and 2024A1515010023)the Qingdao New Energy Shandong Laboratory open Project(QNESL OP 202309)the Fundamental Research Funds of Shandong University.
文摘Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer deposition.This optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture capability.This approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.
文摘目的探讨重组人促红细胞生成素(recombinant human erythropoietin,rHuEPO)联合铁剂纠正老年股骨转子间骨折患者围术期贫血的疗效。方法回顾分析2016年4月-2017年10月符合选择标准的71例老年股骨转子间骨折患者临床资料,均行闭合复位股骨近端髓内钉固定治疗。其中31例术前应用rHuEPO联合铁剂纠正贫血(试验组),40例未使用rHuEPO及铁剂(对照组)。两组患者性别、年龄、体质量指数、致伤原因、骨折侧别及分型、美国麻醉医师协会(ASA)分级、合并内科疾病、骨折至入院时间、术前住院时间以及手术时间比较,差异均无统计学意义(P>0.05)。记录两组患者入院时及术后1、3、7 d血红蛋白水平,术后输血患者例数并计算输血率,术后输血量,术后并发症发生情况以及术后住院时间。结果术后试验组8例(25.8%)、对照组22例(55.0%)输血,试验组输血量为(1.96±0.85)U,明显低于对照组的(3.19±1.61)U;两组输血率及输血量比较差异均有统计学意义(P<0.05)。两组术前血红蛋白水平比较,差异无统计学意义(P>0.05);术后试验组均高于对照组,其中术后7 d差异有统计学意义(P<0.05)。试验组术后住院时间为(6.16±3.97)d,较对照组的(9.25±4.47)d明显缩短(P<0.05)。术后试验组8例(25.8%)、对照组14例(35.0%)发生肺部感染,试验组6例(19.4%)、对照组8例(20.0%)发生下肢深静脉血栓形成,并发症发生率差异均无统计学意义(P>0.05)。所有患者均正常出院,住院期间无死亡。结论老年股骨转子间骨折患者术前应用rHuEPO联合铁剂能快速提高术后血红蛋白水平,缩短住院时间,而且不增加术后下肢深静脉血栓形成发生风险。
基金supported by Royal Academy of Engineering(IF2223B-125)Royal Society(IECR3213107)。
文摘Laser directed energy deposition(LDED)is an emerging branch of metal-based additive manufacturing(AM)processes,offering unprecedented capabilities for high-performance fabrication with complex geometries and near-net shapes.This technology is gathering increasing attention from industries such as biomedical,automotive,and aerospace.However,achieving consistent part quality and desired material properties is challenging due to intricate processing parameters and potential process defects such as dynamic melt-pool behavior and localized heat accumulation.This paper reviews recent advances in on-line quality control,focusing on in-situ measurement and closed-loop control for efficient assurance of LDED-fabricated parts.The quality principles,encompassing accuracy and material performance,are summarized to lay a foundation for understanding the mechanisms of quality defects and influencing factors.This review explores and thoroughly compares advancements in indirect process measurements,such as optical,thermal,and acoustic monitoring with direct quality measurements,including laser-line scanning and operando synchrotron X-ray imaging.Depending on the sensing techniques,this paper highlights a hierarchical control strategy for adaptive parameter regulation on intra-layer and inter-layer scales.The requirements and performance of various state-of-the-art controllers are critically compared to indicate their suitable applications.The importance of machine learning in detecting process anomalies and predicting build quality based on sensory signals is also outlined.Future directions are proposed towards adaptive,automated,and intelligent quality control,with a focus on multi-modal monitoring,physics-informed neural networks for interpretable analysis,and multi-objective control applications.
基金financially supported by the National Natural Science Foundation of China(Nos.52362012,42077162,51978323)Natural Science Foundation of Jiangxi Province(No.2022ACB203014)+4 种基金Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province(Nos.20213BCJ22018,20232BCJ22048)Natural Science Project of the Educational Department in Jiangxi Province(No.GJJ2201121)Natural Science Foundation of Nanchang Hangkong University(No.EA202202256)Educational Reform Project of Jiangxi Province(No.JXYJG-2022-135)Nanchang Hangkong University Educational Reform Project(Nos.sz2214,sz2213,JY22017,KCPY1806)。
文摘Photocatalytic H_(2)production from water splitting is a promising candidate for solving the increasing energy crisis and environmental issues.Herein we report a novel g-C_(3)N_(4)/Ag In_(x)S_(y)S-scheme heterojunction photocatalyst for water splitting into stoichiometric H_(2)and H_(2)O_(2)under visible light.The catalyst was prepared by depositing 3D bimetallic sulfide(Ag In_(x)S_(y))nanotubes onto 2D g-C_(3)N_(4)nanosheets.Owing to the special 3D-on-2D configuration,the photogenerated carriers could be rapidly transferred and effectively separated through the abundant interfacial heterostructures to avoid recombination,and therefore excellent performance for visible light-driven water splitting could be obtained,with a 24-h H_(2)evolution rate up to 237μmol g^(-1)h^(-1).Furthermore,suitable band alignment enables simultaneous H_(2)and H_(2)O_(2)production in a 1:1 stoichiometric ratio.H_(2)and H_(2)O_(2)were evolved on the conduction band of g-C_(3)N_(4)and on the valance band of Ag In_(x)S_(y),respectively.The novel 3D-on-2D configuration for heterojunction construction proposed in this work provided alternative research ideas toward photocatalytic reaction.
