Flue gas desulfurization gypsum and clover planting alleviated the soil salinization stress.Soil pH and total phosphorus affected the bacterial communi-ties.Total phosphorus affected the fungal communities.Flue gas de...Flue gas desulfurization gypsum and clover planting alleviated the soil salinization stress.Soil pH and total phosphorus affected the bacterial communi-ties.Total phosphorus affected the fungal communities.Flue gas desulfurization gypsum and clover planting improved jujube quality.The coastal area of Shandong Province,characterized by coastal saline tidal soil,is one of the main production areas of winter jujube in China.However,the low soil fertility and poor soil structure in jujube orchard restricted the development of the jujube industry.The objectives of this study were to 1)evaluate the effect of application of flue gas desulfurization(FGD)gypsum and clover planting on soil quality improvement and soil microbial community structure of jujube orchard;2)investigate the effects of two measures on the nutrition and quality of winter jujube.The results showed that FGD gypsum reduced the soil total salt content by 65.6%,and clover planting increased the soil organic matter content by 30.7%,which effectively alleviated the soil salinization stress and improved the soil structure.Soil pH and total phosphorus(TP)were the main determinants influencing bacterial community composition,and TP was the dominant factor of the fungal community composition in the saline-alkali soils.Meanwhile,FGD gypsum addition and clover planting significantly increased the sugar degree and Vc content of winter jujube,thus improved jujube quality,and further contributed to the ecological sustainable development of winter jujube industry.展开更多
Industrial-use VOx-based catalysts usually have a higher active temperature window (>250-300℃),which becomes a“bottleneck”for the practical application of PCDD/Fs catalytic degradation technology.In this work,VO...Industrial-use VOx-based catalysts usually have a higher active temperature window (>250-300℃),which becomes a“bottleneck”for the practical application of PCDD/Fs catalytic degradation technology.In this work,VO_(x)-FeO_(x)/TiO_(2) catalyst prepared via mechanochemically method was investigated for the catalytic removal of PCDD/Fs.The removal efficiency of 1,2-DCBz,pure PCDD/Fs gas generated in the lab,PCDD/Fs from actual fue gas,long-term were studied,and the degradation mechanism was explored using FTIR and TOFMS.The degradation efficiency of 1,2-DCBz and PCDD/Fs on VO_(x)-FeO_(x)/TiO_(2) were higher than that of VO_(x)/TiO_(2)catalyst,and the optimal FeOx addition ratio was 3 wt.%.The characterization results show that the addition of FeOx can effectively improve the pore structure,surface acidity,and VOx dispersion of the catalyst,thus contributing to increasing the V^(5+)content and surface-active oxygen,which is conducive to the improvement of adsorption and redox performance of the catalyst.Under the actual MSWI (municipal solid waste incineration)fue gas,the PCDD/Fs removal efficiency over VTi-3Fe-MC maintained long-term stability,higher than 85%for 240 min.This result was not significantly reduced compared with the data obtained in the laboratory.According to the analysis results of intermediate products by FTIR and GC-TOFMS,it can be inferred that the epoxidation fracture of benzene ring is the rate-limiting step of dioxin catalytic degradation reaction.This work gives an in-depth view into the PCDD/Fs removal over VO_(x)-FeO_(x)/TiO_(2) catalysts and could provide guidelines for the rational design of reliable catalysts for industrial applications.展开更多
Photocatalytic splitting of water was carried out in a two-phase system. Nanocrystalline titanium dioxide was used as photocatalyst and potassium hexacyanoferrate(III)/(II) as electron transporter. Generated hydrogen ...Photocatalytic splitting of water was carried out in a two-phase system. Nanocrystalline titanium dioxide was used as photocatalyst and potassium hexacyanoferrate(III)/(II) as electron transporter. Generated hydrogen was chemically stored by use of a 1,4-benzoquinone/1,4-hydroquinone system, which was used as a recyclable fuel in a commercialised direct methanol fuel cell (DMFC). The electrical output of the cell was about half compared to methanol. The conversion process for water splitting and recombination in a fuel cell was monitored by UV-Vis spectroscopy and compared to a simulated spectrum. Products of side reactions, which lead to a decrease of the overall efficiency, were identified based on UV-Vis investigations. A proof of principle for the use of quinoide systems as a recyclable hydrogen storage system in a photocatalytic water splitting and fuel cell cyclic process was given.展开更多
目的:探讨使用毛囊单位提取技术(FUE,follicular unit extraction)阴毛移植术治疗先天性阴毛稀疏和先天性无阴毛的围手术期护理效果。方法:对23例FUE阴毛移植患者,进行有效的围手术期个性护理。结果:全部患者均达到预期效果,未出现并发...目的:探讨使用毛囊单位提取技术(FUE,follicular unit extraction)阴毛移植术治疗先天性阴毛稀疏和先天性无阴毛的围手术期护理效果。方法:对23例FUE阴毛移植患者,进行有效的围手术期个性护理。结果:全部患者均达到预期效果,未出现并发症。结论:加强自体毛发移植的围手术期护理可以提高自体毛发移植的存活率及满意率。展开更多
目的探讨溶菌酶凝胶应用于毛发移植术后供区创面的临床效果。方法自2020年12月至2021年12月,南方医科大学南方医院整形外科将286例接受毛囊单位钻取(follicular unit extraction,FUE)毛发移植手术的患者随机分为观察组和对照组,每组143...目的探讨溶菌酶凝胶应用于毛发移植术后供区创面的临床效果。方法自2020年12月至2021年12月,南方医科大学南方医院整形外科将286例接受毛囊单位钻取(follicular unit extraction,FUE)毛发移植手术的患者随机分为观察组和对照组,每组143例,术后即刻于患者供区分别涂抹溶菌酶凝胶或莫匹罗星软膏,并于术后第3天再次涂抹。术后定期随访2个月,评价并比较两组间供区创面愈合和毛囊炎的发生情况。结果术后第3天,对照组创面愈合率为46.50%±1.01%,观察组创面愈合率为49.08%±0.96%,差异无统计学意义(P>0.05)。术后第5天,两组供区创面均已愈合,愈合时间及程度无显著差别。对照组供区毛囊炎发生率为12.59%,而观察组供区毛囊炎发生率为4.90%,差异具有统计学意义(P<0.05),且毛囊炎严重程度较轻;所有的毛囊炎经对症治疗7~10 d后痊愈。结论溶菌酶凝胶对毛发移植术后供区创面的愈合无影响;采用溶菌酶凝胶是改善毛发移植术后供区创面出现毛囊炎的较好的治疗方式,效果可靠,值得临床推广应用。展开更多
Background: Hair loss at the nape of the neck causes embarrassment and psychological stress in a number of patients due to a variety of causes including acne keloidalis nuchae and traction alopecia. Objectives: To rep...Background: Hair loss at the nape of the neck causes embarrassment and psychological stress in a number of patients due to a variety of causes including acne keloidalis nuchae and traction alopecia. Objectives: To report a case of hair transplantation into the nape of the neck as a treatment option for scarring resulting from acne keloidalis nuchae. Methods: 700 grafts where transplanted from the occipital donor area and transplanted by follicular unit extraction (FUE) into the nape area of a male patient with recurrent scarring folliculitis in that area. Results: Hair Restoration was successful with natural looking results. More tumescence than usual and skin traction was necessary to stabilize the skin during graft insertion due to soft skin in the nape area. Conclusions: Hair Restoration Surgery into the nape of the neck is an option for patients with hair loss in that area. FUE is the best method of hair transplantation allowing the selection of 1 and 2 hair FUE grafts in order to achieve a natural looking result in the nape area.展开更多
基金supported by the Forestry Science and Technology Innovation Project of Shandong Province(grant number 2019LY009)the National Key Basic Research Program of China(grant number2021YFD190090101).
文摘Flue gas desulfurization gypsum and clover planting alleviated the soil salinization stress.Soil pH and total phosphorus affected the bacterial communi-ties.Total phosphorus affected the fungal communities.Flue gas desulfurization gypsum and clover planting improved jujube quality.The coastal area of Shandong Province,characterized by coastal saline tidal soil,is one of the main production areas of winter jujube in China.However,the low soil fertility and poor soil structure in jujube orchard restricted the development of the jujube industry.The objectives of this study were to 1)evaluate the effect of application of flue gas desulfurization(FGD)gypsum and clover planting on soil quality improvement and soil microbial community structure of jujube orchard;2)investigate the effects of two measures on the nutrition and quality of winter jujube.The results showed that FGD gypsum reduced the soil total salt content by 65.6%,and clover planting increased the soil organic matter content by 30.7%,which effectively alleviated the soil salinization stress and improved the soil structure.Soil pH and total phosphorus(TP)were the main determinants influencing bacterial community composition,and TP was the dominant factor of the fungal community composition in the saline-alkali soils.Meanwhile,FGD gypsum addition and clover planting significantly increased the sugar degree and Vc content of winter jujube,thus improved jujube quality,and further contributed to the ecological sustainable development of winter jujube industry.
基金supported by the Natural Science Foundation of Zhejiang Province (No. LY21E060007)the National Natural Science Foundation of China (No. 52006191)。
文摘Industrial-use VOx-based catalysts usually have a higher active temperature window (>250-300℃),which becomes a“bottleneck”for the practical application of PCDD/Fs catalytic degradation technology.In this work,VO_(x)-FeO_(x)/TiO_(2) catalyst prepared via mechanochemically method was investigated for the catalytic removal of PCDD/Fs.The removal efficiency of 1,2-DCBz,pure PCDD/Fs gas generated in the lab,PCDD/Fs from actual fue gas,long-term were studied,and the degradation mechanism was explored using FTIR and TOFMS.The degradation efficiency of 1,2-DCBz and PCDD/Fs on VO_(x)-FeO_(x)/TiO_(2) were higher than that of VO_(x)/TiO_(2)catalyst,and the optimal FeOx addition ratio was 3 wt.%.The characterization results show that the addition of FeOx can effectively improve the pore structure,surface acidity,and VOx dispersion of the catalyst,thus contributing to increasing the V^(5+)content and surface-active oxygen,which is conducive to the improvement of adsorption and redox performance of the catalyst.Under the actual MSWI (municipal solid waste incineration)fue gas,the PCDD/Fs removal efficiency over VTi-3Fe-MC maintained long-term stability,higher than 85%for 240 min.This result was not significantly reduced compared with the data obtained in the laboratory.According to the analysis results of intermediate products by FTIR and GC-TOFMS,it can be inferred that the epoxidation fracture of benzene ring is the rate-limiting step of dioxin catalytic degradation reaction.This work gives an in-depth view into the PCDD/Fs removal over VO_(x)-FeO_(x)/TiO_(2) catalysts and could provide guidelines for the rational design of reliable catalysts for industrial applications.
文摘Photocatalytic splitting of water was carried out in a two-phase system. Nanocrystalline titanium dioxide was used as photocatalyst and potassium hexacyanoferrate(III)/(II) as electron transporter. Generated hydrogen was chemically stored by use of a 1,4-benzoquinone/1,4-hydroquinone system, which was used as a recyclable fuel in a commercialised direct methanol fuel cell (DMFC). The electrical output of the cell was about half compared to methanol. The conversion process for water splitting and recombination in a fuel cell was monitored by UV-Vis spectroscopy and compared to a simulated spectrum. Products of side reactions, which lead to a decrease of the overall efficiency, were identified based on UV-Vis investigations. A proof of principle for the use of quinoide systems as a recyclable hydrogen storage system in a photocatalytic water splitting and fuel cell cyclic process was given.
文摘目的:探讨使用毛囊单位提取技术(FUE,follicular unit extraction)阴毛移植术治疗先天性阴毛稀疏和先天性无阴毛的围手术期护理效果。方法:对23例FUE阴毛移植患者,进行有效的围手术期个性护理。结果:全部患者均达到预期效果,未出现并发症。结论:加强自体毛发移植的围手术期护理可以提高自体毛发移植的存活率及满意率。
文摘目的探讨溶菌酶凝胶应用于毛发移植术后供区创面的临床效果。方法自2020年12月至2021年12月,南方医科大学南方医院整形外科将286例接受毛囊单位钻取(follicular unit extraction,FUE)毛发移植手术的患者随机分为观察组和对照组,每组143例,术后即刻于患者供区分别涂抹溶菌酶凝胶或莫匹罗星软膏,并于术后第3天再次涂抹。术后定期随访2个月,评价并比较两组间供区创面愈合和毛囊炎的发生情况。结果术后第3天,对照组创面愈合率为46.50%±1.01%,观察组创面愈合率为49.08%±0.96%,差异无统计学意义(P>0.05)。术后第5天,两组供区创面均已愈合,愈合时间及程度无显著差别。对照组供区毛囊炎发生率为12.59%,而观察组供区毛囊炎发生率为4.90%,差异具有统计学意义(P<0.05),且毛囊炎严重程度较轻;所有的毛囊炎经对症治疗7~10 d后痊愈。结论溶菌酶凝胶对毛发移植术后供区创面的愈合无影响;采用溶菌酶凝胶是改善毛发移植术后供区创面出现毛囊炎的较好的治疗方式,效果可靠,值得临床推广应用。
文摘Background: Hair loss at the nape of the neck causes embarrassment and psychological stress in a number of patients due to a variety of causes including acne keloidalis nuchae and traction alopecia. Objectives: To report a case of hair transplantation into the nape of the neck as a treatment option for scarring resulting from acne keloidalis nuchae. Methods: 700 grafts where transplanted from the occipital donor area and transplanted by follicular unit extraction (FUE) into the nape area of a male patient with recurrent scarring folliculitis in that area. Results: Hair Restoration was successful with natural looking results. More tumescence than usual and skin traction was necessary to stabilize the skin during graft insertion due to soft skin in the nape area. Conclusions: Hair Restoration Surgery into the nape of the neck is an option for patients with hair loss in that area. FUE is the best method of hair transplantation allowing the selection of 1 and 2 hair FUE grafts in order to achieve a natural looking result in the nape area.
