Deep level donor＇s ionization behavior of passive film formed on the surface of stainless steel was investigated by Mott-Schottky plots. It is indicated that transformation process of deep level donors＇ ionization b...Deep level donor＇s ionization behavior of passive film formed on the surface of stainless steel was investigated by Mott-Schottky plots. It is indicated that transformation process of deep level donors＇ ionization behavior of passive film on surface of stainless steel can be divided into 4 stages with rising immersion time. At the initial immersion stage （10 min）, Fe（II） located in the octahedral sites of the unit cell is not ionized and the deep level does not appear in Mott-Schottky plots. At the second stage （9-38 h）, Fe（II） located in the octahedral sites starts to be ionized, which results in deep level donors＇ generation and density of deep level donors almost is constant with augmenting immersion time but the thickness of space charge layer is more and more thicker with rising immersion time. At the third stage （48 h-12 d）, density of deep level donors rises with increasing immersion time and the thickness of passive films space charge layer decreases. At last stage （above 23 d）, both the space charge layer＇s thickness and density of deep level donors are no longer changed with increasing immersion time. In the overall immersion stage, the shallow level donors＇ density is invariable all the time. The mechanism of deep level donor＇s ionization can be the generation of metal vacancies, which results in crystal lattice＇s aberration and the aberration energy urges the ionization of Fe（ II ） in octahedral sites.展开更多
Two polymer donor materials,namely pBDT-BTI-EH and pBDT-BTI-ME,were synthesized by copoly-merizing benzodithiophene(BDT)unit with bithiophene imide(BTI)unit containing 2-ethylhexyl and methyl alkyl side chains,respect...Two polymer donor materials,namely pBDT-BTI-EH and pBDT-BTI-ME,were synthesized by copoly-merizing benzodithiophene(BDT)unit with bithiophene imide(BTI)unit containing 2-ethylhexyl and methyl alkyl side chains,respectively.Compared to pBDT-BTI-EH∶Y6 based organic solar cells(OSCs),the pBDT-BTI-ME∶Y6-based device exhibited higher charge mobilities,reduced charge recombination,more efficient exciton dissociation,and favorable film morphology,which leaded to increased short current density(Jsc),fill factor(FF)and thus a significant improvement in power conversion efficiency(PCE)from 9.31%to 15.69%.展开更多
OBJECTIVE To investigate the regulation of {O^2(2,4-dinitrophenyl)1-[(4-ethoxycarbonyl)piperazin-1-yl]diazen-1-ium-1,2-diolate}(JS-K),anitric oxide donor,on tumor energy metabolism in H22 tumor-bearing mice.METHODS Th...OBJECTIVE To investigate the regulation of {O^2(2,4-dinitrophenyl)1-[(4-ethoxycarbonyl)piperazin-1-yl]diazen-1-ium-1,2-diolate}(JS-K),anitric oxide donor,on tumor energy metabolism in H22 tumor-bearing mice.METHODS The hepatoma animal model in BALB/c mice was established with H22 cell line.The JS-K group and model group were received JS-K(0.75 and 1.5 mg?kg^(-1)) and saline via tail intravenous once every 3 d for 14 d,received 5 injections,respectively.The positive group was received 5-FU 20 mg·kg^(-1) by intraperitoneal injection once a day for 14 d.On the 15 th day mice were sacrificed.The tumor growth inhibition rate were calculated.The activities of hexokinase(HK),phosphofructo kinase(PFK),pyruvate kinase(PK),succinate dehydrogenase(SDH),adenosine triphosphatase(ATPase),and the levels of lactic acid(LD) and adenosine triphosphate(ATP) in tumor tissues were determined by colorimetric method.RESULTS Compared with model group,the tumor mass of JS-K0.75 and 1.5 mg·kg^(-1) group was significantly reduced(P<0.01),and the tumor growth inhibition rate was 23.9% and 50.3%,respectively.The activity of HK,PFK,PK,SDH and ATPase of tumor tissue in model group was(22.6±3.7,14.4±2.6,12.9±3.2 and 10.5±2.6)U·g^(-1) protein and(0.70±0.10)μmol Pi·mg^(-1) protein per hour,respectively;which in JS-K 1.5 mg?kg^(-1) group was dropped by 42.0%,26.6%,22.7%,23.3% and 21.7%(P<0.01,P<0.05).Compared with the model group,the level of ATP and LD in JS-K group was dropped(P<0.01).CONCLUSION JS-K can inhibit the growth of tumor in H22 tumor-bearing mice and its mechanism may be related to regulating the tumor energy metabolism with inhibition of glycolysis and aerobic oxidation.展开更多
Ternary strategy has demonstrated great potential in promoting the power conversion efficiency(PCE)of bulk heterojunction organic solar cells(BHJ OSCs).Two new polymer donors,TPQ-2 F-2 Cl and TPQ-2 F-4 F,were synthesi...Ternary strategy has demonstrated great potential in promoting the power conversion efficiency(PCE)of bulk heterojunction organic solar cells(BHJ OSCs).Two new polymer donors,TPQ-2 F-2 Cl and TPQ-2 F-4 F,were synthesized with chlorinated and fluorinated aromatic side chains,respectively,which contributed to distinct noncovalent interactions.Compared with the PM 6:L 8-BO host system,the TPQ-2 F-2 Cl based ternary OSCs obtained enhanced exciton dissociation and more balanced carrier mobility.Moreover,benefiting from the favorable miscibility of the PM 6:L 8-BO:TPQ-2 F-2 Cl blend,the ternary blending film featured a well-defined fibrillar morphology and improved molecular ordering.Consequently,the optimal PM 6:L 8-BO:TPQ-2 F-2 Cl device achieved a more outstanding PCE of 18.2%,a higher open circuit voltage(V_(oc)),and a better fill factor(FF)in comparison with the binary device(PCE=17.7%).In contrast,the addition of TPQ-2 F-4 F would generate excessive aggregation of blend,thereby reducing the PCE of ternary OSCs(16.0%).This work shows a promising idea for designing efficient third component donor polymers.展开更多
目的分析亲体肝移植治疗儿童遗传代谢病(inborn errors of metabolism,IEM)的临床效果。方法回顾性分析新疆医科大学第一附属医院2021年1月至2024年7月间18例行亲体肝移植手术的遗传代谢病患儿(为遗传代谢病组)临床资料,分析其治疗效果...目的分析亲体肝移植治疗儿童遗传代谢病(inborn errors of metabolism,IEM)的临床效果。方法回顾性分析新疆医科大学第一附属医院2021年1月至2024年7月间18例行亲体肝移植手术的遗传代谢病患儿(为遗传代谢病组)临床资料,分析其治疗效果及并发症情况,并与本中心同期21例行亲体肝移植的非遗传代谢病患儿(为非遗传代谢病组)进行术前资料与累计生存率的比较,同时比较遗传代谢病组患儿术前、术后6个月的体重Z评分、身高Z评分。结果18例遗传代谢病患儿原发病包括:肝豆状核变性8例、酪氨酸血症2例、先天性肝纤维化4例、枫糖尿病1例、Caroli病1例、糖原累积症Ⅰ型1例、Alagille综合征1例。遗传代谢病组患儿与非遗传代谢病组患儿移植月龄分别为114.00(96.00,132.00)个月、6.57(5.68,77.00)个月,身高Z评分分别为(-0.77±1.62)分、(-1.91±2.30)分;差异均有统计学意义(P<0.05)。遗传代谢病组中术后有7例出现不同程度并发症,经对症治疗后治愈;1例围手术期因弥散性血管内凝血死亡。两组中位随访时间19.75个月,遗传代谢病组与非遗传代谢病组患儿术后累计生存率分别为87.5%和84.6%,差异无统计学意义(P>0.05);遗传代谢病组术前和术后6个月身高、体重Z评分分别为(-0.77±1.62)分和(-1.22±2.26)分、(-0.27±1.29)分和(0.03±0.92)分,差异均具有统计学意义(P<0.05)。结论亲体肝移植可以有效治疗部分遗传代谢病,改善患儿生长发育迟缓,提高患儿的生存率和生活质量。展开更多
基金Foundation item: Projects(50571059, 50615024 ) supported by the National Natural Science Foundation of ChinaProject(NCET-07-0536) supported by Program for New Century Excellent Talents in UniversityProject(IRT0739) supported by Program for Innovative Research Team in University
文摘Deep level donor＇s ionization behavior of passive film formed on the surface of stainless steel was investigated by Mott-Schottky plots. It is indicated that transformation process of deep level donors＇ ionization behavior of passive film on surface of stainless steel can be divided into 4 stages with rising immersion time. At the initial immersion stage （10 min）, Fe（II） located in the octahedral sites of the unit cell is not ionized and the deep level does not appear in Mott-Schottky plots. At the second stage （9-38 h）, Fe（II） located in the octahedral sites starts to be ionized, which results in deep level donors＇ generation and density of deep level donors almost is constant with augmenting immersion time but the thickness of space charge layer is more and more thicker with rising immersion time. At the third stage （48 h-12 d）, density of deep level donors rises with increasing immersion time and the thickness of passive films space charge layer decreases. At last stage （above 23 d）, both the space charge layer＇s thickness and density of deep level donors are no longer changed with increasing immersion time. In the overall immersion stage, the shallow level donors＇ density is invariable all the time. The mechanism of deep level donor＇s ionization can be the generation of metal vacancies, which results in crystal lattice＇s aberration and the aberration energy urges the ionization of Fe（ II ） in octahedral sites.
文摘Two polymer donor materials,namely pBDT-BTI-EH and pBDT-BTI-ME,were synthesized by copoly-merizing benzodithiophene(BDT)unit with bithiophene imide(BTI)unit containing 2-ethylhexyl and methyl alkyl side chains,respectively.Compared to pBDT-BTI-EH∶Y6 based organic solar cells(OSCs),the pBDT-BTI-ME∶Y6-based device exhibited higher charge mobilities,reduced charge recombination,more efficient exciton dissociation,and favorable film morphology,which leaded to increased short current density(Jsc),fill factor(FF)and thus a significant improvement in power conversion efficiency(PCE)from 9.31%to 15.69%.
基金supported by National Natural Science Foundation of China(81502627)the Young Backbone Teachers Assistance Scheme of Henan Province Colleges and Universities(2016GGJS-065)
文摘OBJECTIVE To investigate the regulation of {O^2(2,4-dinitrophenyl)1-[(4-ethoxycarbonyl)piperazin-1-yl]diazen-1-ium-1,2-diolate}(JS-K),anitric oxide donor,on tumor energy metabolism in H22 tumor-bearing mice.METHODS The hepatoma animal model in BALB/c mice was established with H22 cell line.The JS-K group and model group were received JS-K(0.75 and 1.5 mg?kg^(-1)) and saline via tail intravenous once every 3 d for 14 d,received 5 injections,respectively.The positive group was received 5-FU 20 mg·kg^(-1) by intraperitoneal injection once a day for 14 d.On the 15 th day mice were sacrificed.The tumor growth inhibition rate were calculated.The activities of hexokinase(HK),phosphofructo kinase(PFK),pyruvate kinase(PK),succinate dehydrogenase(SDH),adenosine triphosphatase(ATPase),and the levels of lactic acid(LD) and adenosine triphosphate(ATP) in tumor tissues were determined by colorimetric method.RESULTS Compared with model group,the tumor mass of JS-K0.75 and 1.5 mg·kg^(-1) group was significantly reduced(P<0.01),and the tumor growth inhibition rate was 23.9% and 50.3%,respectively.The activity of HK,PFK,PK,SDH and ATPase of tumor tissue in model group was(22.6±3.7,14.4±2.6,12.9±3.2 and 10.5±2.6)U·g^(-1) protein and(0.70±0.10)μmol Pi·mg^(-1) protein per hour,respectively;which in JS-K 1.5 mg?kg^(-1) group was dropped by 42.0%,26.6%,22.7%,23.3% and 21.7%(P<0.01,P<0.05).Compared with the model group,the level of ATP and LD in JS-K group was dropped(P<0.01).CONCLUSION JS-K can inhibit the growth of tumor in H22 tumor-bearing mice and its mechanism may be related to regulating the tumor energy metabolism with inhibition of glycolysis and aerobic oxidation.
基金Projects(52125306,21875286)supported by the National Natural Science Foundation of China。
文摘Ternary strategy has demonstrated great potential in promoting the power conversion efficiency(PCE)of bulk heterojunction organic solar cells(BHJ OSCs).Two new polymer donors,TPQ-2 F-2 Cl and TPQ-2 F-4 F,were synthesized with chlorinated and fluorinated aromatic side chains,respectively,which contributed to distinct noncovalent interactions.Compared with the PM 6:L 8-BO host system,the TPQ-2 F-2 Cl based ternary OSCs obtained enhanced exciton dissociation and more balanced carrier mobility.Moreover,benefiting from the favorable miscibility of the PM 6:L 8-BO:TPQ-2 F-2 Cl blend,the ternary blending film featured a well-defined fibrillar morphology and improved molecular ordering.Consequently,the optimal PM 6:L 8-BO:TPQ-2 F-2 Cl device achieved a more outstanding PCE of 18.2%,a higher open circuit voltage(V_(oc)),and a better fill factor(FF)in comparison with the binary device(PCE=17.7%).In contrast,the addition of TPQ-2 F-4 F would generate excessive aggregation of blend,thereby reducing the PCE of ternary OSCs(16.0%).This work shows a promising idea for designing efficient third component donor polymers.
文摘目的分析亲体肝移植治疗儿童遗传代谢病(inborn errors of metabolism,IEM)的临床效果。方法回顾性分析新疆医科大学第一附属医院2021年1月至2024年7月间18例行亲体肝移植手术的遗传代谢病患儿(为遗传代谢病组)临床资料,分析其治疗效果及并发症情况,并与本中心同期21例行亲体肝移植的非遗传代谢病患儿(为非遗传代谢病组)进行术前资料与累计生存率的比较,同时比较遗传代谢病组患儿术前、术后6个月的体重Z评分、身高Z评分。结果18例遗传代谢病患儿原发病包括:肝豆状核变性8例、酪氨酸血症2例、先天性肝纤维化4例、枫糖尿病1例、Caroli病1例、糖原累积症Ⅰ型1例、Alagille综合征1例。遗传代谢病组患儿与非遗传代谢病组患儿移植月龄分别为114.00(96.00,132.00)个月、6.57(5.68,77.00)个月,身高Z评分分别为(-0.77±1.62)分、(-1.91±2.30)分;差异均有统计学意义(P<0.05)。遗传代谢病组中术后有7例出现不同程度并发症,经对症治疗后治愈;1例围手术期因弥散性血管内凝血死亡。两组中位随访时间19.75个月,遗传代谢病组与非遗传代谢病组患儿术后累计生存率分别为87.5%和84.6%,差异无统计学意义(P>0.05);遗传代谢病组术前和术后6个月身高、体重Z评分分别为(-0.77±1.62)分和(-1.22±2.26)分、(-0.27±1.29)分和(0.03±0.92)分,差异均具有统计学意义(P<0.05)。结论亲体肝移植可以有效治疗部分遗传代谢病,改善患儿生长发育迟缓,提高患儿的生存率和生活质量。
