目的:研究经纳米微针导入0.5%氨甲环酸溶液对中国女性面部皮肤暗沉的疗效及安全性。方法:募集60名无基础病的健康临床受试者,随机分为两组,每组30名。生理盐水组:受试者全面部使用纳米微针导入生理盐水;0.5%氨甲环酸溶液组:受试者全面...目的:研究经纳米微针导入0.5%氨甲环酸溶液对中国女性面部皮肤暗沉的疗效及安全性。方法:募集60名无基础病的健康临床受试者,随机分为两组,每组30名。生理盐水组:受试者全面部使用纳米微针导入生理盐水;0.5%氨甲环酸溶液组:受试者全面部使用纳米微针导入0.5%氨甲环酸溶液。两组受试者均每周接受1次治疗,共治疗2个月,每周两组受试者接受治疗前及治疗后72h都检测经皮水分丢失(trans-epidermal water loss,TEWL)、角质层含水量、红斑量、黑素及皮肤弹性,拍摄每组受试者治疗前后面部照片。通过皮肤状态问卷调查受试者满意度及不良反应,治疗结束后1个月、2个月复测TEWL、角质层含水量、红斑量、黑素及皮肤弹性。结果:生理盐水组治疗后72h经皮水分丢失、角质层含水量、红斑量、皮肤弹性与0.5%氨甲环酸溶液组无显著性差异;生理盐水组治疗后黑素数值显著高于0.5%氨甲环酸溶液组;生理盐水组受试者面部照片治疗前后无显著性差异,0.5%氨甲环酸溶液组治疗后面部照片明显比治疗前肤色白皙;生理盐水组受试者及医生满意度显著低于0.5%氨甲环酸溶液组;生理盐水组及0.5%氨甲环酸溶液组皆无不良反应;0.5%氨甲环酸溶液组治疗后1个月的黑素值与初次治疗前的黑素值有显著性差异(P<0.05),治疗后2个月的黑素值与初次治疗前测得的黑素值无统计学差异。结论:纳米微针导入0.5%氨甲环酸溶液可明显改善中国女性面部皮肤暗沉。展开更多
The stiffened cylindrical shell is commonly used for the pressure hull of submersibles and the legs of offshore platforms. There are various failure modes because of uncertainty with the structural size and material p...The stiffened cylindrical shell is commonly used for the pressure hull of submersibles and the legs of offshore platforms. There are various failure modes because of uncertainty with the structural size and material properties, uncertainty of the calculation model and machining errors. Correlations among failure modes must be considered with the structural reliability of stiffened cylindrical shells. However, the traditional method cannot consider the correlations effectively. The aim of this study is to present a method of reliability analysis for stiffened cylindrical shells which considers the correlations among failure modes. Firstly, the joint failure probability calculation formula of two related failure modes is derived through use of the 2D joint probability density function. Secondly, the full probability formula of the tandem structural system is given with consideration to the correlations among failure modes. At last, the accuracy of the system reliability calculation is verified through use of the Monte Carlo simulation. Result of the analysis shows the failure probability of stiffened cylindrical shells can be gained through adding the failure probability of each mode.展开更多
Objective:To analyze the efficacy and safety o f apatinib in the treatment of stage IV osteogenic sarcoma after chemotherapy failure through a single-arm,prospective,and open clinical phase II study.Methods:Informatio...Objective:To analyze the efficacy and safety o f apatinib in the treatment of stage IV osteogenic sarcoma after chemotherapy failure through a single-arm,prospective,and open clinical phase II study.Methods:Information on 34 patients with stage IV osteogenic sarcoma treated with apatinib after failure o f chemotherapy in Tianjin Medical University Cancer Institute and Hospital between September 2015 and December 2019 was collected and analyzed.The participants included 23 males and 11 females,with an average age of 35.24 years(11-73 years).The objective response rate(ORR),disease control rate(DCR),progression-free survival(PFS),PFS rate(PFR),and overall survival(OS)were evaluated.The treatmentrelated adverse events(AEs)and safety of apatinib were also evaluated.Results:O f the 34 patients,33 were able to be evaluated for efficacy.One patient received apatinib treatment for less than one cycle;therefore,only safety analysis was performed.The 12-week clinical evaluation showed that 2 patients had a partial response(PR),24 patients had stable disease(SD),and 7 patients had progressive disease(PD).The ORR,DCR,and PFR at 12 weeks were 6.06%(2/33),78.79%(26/33),and 82%,respectively.By the end of the follow-up,6 patients had SD(18.18%,6/33),27 patients had PD(81.82%,27/33),and 15 patients died because of disease progression(45.45%,15/33).The ORR was 0(0/33),the DCR was 18.18%(6/33),and the median PFS(mPFS)was 7.89 months(95%Cl:4.56-11.21).The median OS(mOS)was 17.61 months(95%Cl:10.85-24.37).The most common treatment-related AEs were hand-foot syndrome(35.29%,12/34),proteinuria(32.35%,11/34),and hypertension(32.35%,11/34).展开更多
[Objectives]This study was conducted to investigate the effects of seeding rate and light on the seed yield and active ingredients of Vernonia anthelmintica.[Methods]With V.anthelmintica L.Willd as the research object...[Objectives]This study was conducted to investigate the effects of seeding rate and light on the seed yield and active ingredients of Vernonia anthelmintica.[Methods]With V.anthelmintica L.Willd as the research object,the seed yield was determined by staged harvesting combined with the actual cutting and measuring method;and the caffeoylquinic acids(CQA)were used as the characterization indexes,and high performance liquid chromatography was used to determine the contents of 3,4-CQA,3,5-CQA and 4,5-CQA of V.anthelmintica seeds under different seeding rate+light treatments,so as to compare the changes in seed yield and chemical composition of V.anthelmintica under different seeding rates and light factors.[Results]In Moyu County,Hetian and similar areas,the suitable planting rate of V.anthelmintica was in the range of 13.5-15.0 kg/hm^(2).For different harvesting purposes,the optimal seeding rate and light conditions of V.Anthelmintica were different.[Conclusions]The seeding rate and light conditions can be used to interfere with the seed yield and quality of V.anthelmintica.展开更多
文摘目的:研究经纳米微针导入0.5%氨甲环酸溶液对中国女性面部皮肤暗沉的疗效及安全性。方法:募集60名无基础病的健康临床受试者,随机分为两组,每组30名。生理盐水组:受试者全面部使用纳米微针导入生理盐水;0.5%氨甲环酸溶液组:受试者全面部使用纳米微针导入0.5%氨甲环酸溶液。两组受试者均每周接受1次治疗,共治疗2个月,每周两组受试者接受治疗前及治疗后72h都检测经皮水分丢失(trans-epidermal water loss,TEWL)、角质层含水量、红斑量、黑素及皮肤弹性,拍摄每组受试者治疗前后面部照片。通过皮肤状态问卷调查受试者满意度及不良反应,治疗结束后1个月、2个月复测TEWL、角质层含水量、红斑量、黑素及皮肤弹性。结果:生理盐水组治疗后72h经皮水分丢失、角质层含水量、红斑量、皮肤弹性与0.5%氨甲环酸溶液组无显著性差异;生理盐水组治疗后黑素数值显著高于0.5%氨甲环酸溶液组;生理盐水组受试者面部照片治疗前后无显著性差异,0.5%氨甲环酸溶液组治疗后面部照片明显比治疗前肤色白皙;生理盐水组受试者及医生满意度显著低于0.5%氨甲环酸溶液组;生理盐水组及0.5%氨甲环酸溶液组皆无不良反应;0.5%氨甲环酸溶液组治疗后1个月的黑素值与初次治疗前的黑素值有显著性差异(P<0.05),治疗后2个月的黑素值与初次治疗前测得的黑素值无统计学差异。结论:纳米微针导入0.5%氨甲环酸溶液可明显改善中国女性面部皮肤暗沉。
基金The Defence Advance Research Program of Science and Technology of Ship Industry(Grant No.11J1.3.1)
文摘The stiffened cylindrical shell is commonly used for the pressure hull of submersibles and the legs of offshore platforms. There are various failure modes because of uncertainty with the structural size and material properties, uncertainty of the calculation model and machining errors. Correlations among failure modes must be considered with the structural reliability of stiffened cylindrical shells. However, the traditional method cannot consider the correlations effectively. The aim of this study is to present a method of reliability analysis for stiffened cylindrical shells which considers the correlations among failure modes. Firstly, the joint failure probability calculation formula of two related failure modes is derived through use of the 2D joint probability density function. Secondly, the full probability formula of the tandem structural system is given with consideration to the correlations among failure modes. At last, the accuracy of the system reliability calculation is verified through use of the Monte Carlo simulation. Result of the analysis shows the failure probability of stiffened cylindrical shells can be gained through adding the failure probability of each mode.
基金partly supported by the Natural Science Foundation of Tianjin(Grant Nos.16JCYBJC24100 and 18YFZCSY00550).
文摘Objective:To analyze the efficacy and safety o f apatinib in the treatment of stage IV osteogenic sarcoma after chemotherapy failure through a single-arm,prospective,and open clinical phase II study.Methods:Information on 34 patients with stage IV osteogenic sarcoma treated with apatinib after failure o f chemotherapy in Tianjin Medical University Cancer Institute and Hospital between September 2015 and December 2019 was collected and analyzed.The participants included 23 males and 11 females,with an average age of 35.24 years(11-73 years).The objective response rate(ORR),disease control rate(DCR),progression-free survival(PFS),PFS rate(PFR),and overall survival(OS)were evaluated.The treatmentrelated adverse events(AEs)and safety of apatinib were also evaluated.Results:O f the 34 patients,33 were able to be evaluated for efficacy.One patient received apatinib treatment for less than one cycle;therefore,only safety analysis was performed.The 12-week clinical evaluation showed that 2 patients had a partial response(PR),24 patients had stable disease(SD),and 7 patients had progressive disease(PD).The ORR,DCR,and PFR at 12 weeks were 6.06%(2/33),78.79%(26/33),and 82%,respectively.By the end of the follow-up,6 patients had SD(18.18%,6/33),27 patients had PD(81.82%,27/33),and 15 patients died because of disease progression(45.45%,15/33).The ORR was 0(0/33),the DCR was 18.18%(6/33),and the median PFS(mPFS)was 7.89 months(95%Cl:4.56-11.21).The median OS(mOS)was 17.61 months(95%Cl:10.85-24.37).The most common treatment-related AEs were hand-foot syndrome(35.29%,12/34),proteinuria(32.35%,11/34),and hypertension(32.35%,11/34).
基金Autonomous Region Science and Technology Supporting Xinjiang Project Plant Project(2016E02007)the West Light Foundation of The Chinese Academy of Sciences(2019-FPGGRC-004).
文摘[Objectives]This study was conducted to investigate the effects of seeding rate and light on the seed yield and active ingredients of Vernonia anthelmintica.[Methods]With V.anthelmintica L.Willd as the research object,the seed yield was determined by staged harvesting combined with the actual cutting and measuring method;and the caffeoylquinic acids(CQA)were used as the characterization indexes,and high performance liquid chromatography was used to determine the contents of 3,4-CQA,3,5-CQA and 4,5-CQA of V.anthelmintica seeds under different seeding rate+light treatments,so as to compare the changes in seed yield and chemical composition of V.anthelmintica under different seeding rates and light factors.[Results]In Moyu County,Hetian and similar areas,the suitable planting rate of V.anthelmintica was in the range of 13.5-15.0 kg/hm^(2).For different harvesting purposes,the optimal seeding rate and light conditions of V.Anthelmintica were different.[Conclusions]The seeding rate and light conditions can be used to interfere with the seed yield and quality of V.anthelmintica.
