通过对由医疗成像设备获取的二维灰度图像进行形状重建,得到的三维立体原型能帮助医学诊断人员确诊病情。介绍了Shape from Shading的实现原理和扫描电镜成像系统的简单构成,提出了一种基于线性逼近的用于解决SEM反射映射函数的实现方法...通过对由医疗成像设备获取的二维灰度图像进行形状重建,得到的三维立体原型能帮助医学诊断人员确诊病情。介绍了Shape from Shading的实现原理和扫描电镜成像系统的简单构成,提出了一种基于线性逼近的用于解决SEM反射映射函数的实现方法,并将之应用于红血细胞的三维图像重构,得到的细胞图形非常接近其真实形状。展开更多
The possibility of employing antagonistic bacteria for the control of tobacco brown spot was studied. Approximately 136 strains of bacteria were isolated from phyllospheres of tobacco and 9 of these possessed high lev...The possibility of employing antagonistic bacteria for the control of tobacco brown spot was studied. Approximately 136 strains of bacteria were isolated from phyllospheres of tobacco and 9 of these possessed high levels of antagonistic properties, They significantly reduced brown spot in detached tobacco leaves when artificially inoculated with Alternaria alternata. Culture filtrate of the most effective bacterial isolate which designated as Tpb88 was shown to be very efficient in inhibiting mycelial growth of A alternata in dual cultures. Culture filtrate of Tpb88 inhibited germination and germ tube elongation of A alternata. The results showed that the culture filtrate directly inhibited spore germination of A alternata, especially during the first hours of the paired cultivation. The rate of antagonistic activity of culture filtrate of Tpb88 depended on its concentration in the mixture. The greatest inhibition of spore germination was ob served at the highest concentration of filtrate （filtrate to fungal spores inocula mixed in proportion 1 ： 50）. These suggest that the hypothetic mechanism of Tpb88 against tobacco brown spot is to produce antagonistic substances.展开更多
Through field investigation,this paper discusses the social mobility of city wives from countryside and analyses the causes of the upward social mobility plight of this group in urban society.The author believes that ...Through field investigation,this paper discusses the social mobility of city wives from countryside and analyses the causes of the upward social mobility plight of this group in urban society.The author believes that city wives from countryside cannot continue to move upward in urban society because of their lack of culture capital and social capital.To break such plight of upward mobility for the group demands the system renovation.展开更多
Ninety wild strains of Agaricus collected in China,including 44 strains preliminarily identified as Agaricus bisporus by isozyme electrophoresis,were studied using SRAP and ISSR techniques.Eighteen specific SRAP bands...Ninety wild strains of Agaricus collected in China,including 44 strains preliminarily identified as Agaricus bisporus by isozyme electrophoresis,were studied using SRAP and ISSR techniques.Eighteen specific SRAP bands and 12 specific ISSR bands were scored,and a cluster dendrogram was constructed.The 90 wild strains of Agaricus were separated into two major groups,the first consisting of wild strains of A.bisporus and the second consisting of other Agaricus strains.Forty-one wild strains of A.bisporus collected in Sichuan and Tibet formed four groups according to the geographical location of the collection area.White A.bisporus strains from Xinjiang and Tibet(Xinjiang Wild,AgX04 and AgX042)exhibited unique band patterns resulting in lower similarity coefficient values(10%～13%)when compared with brown or light-brown A.bisporus strains.展开更多
目的:探讨在进行经尿道前列腺切除术(transurethral resection of the prostate,TURP)过程中,使用石墨烯保温腿套对老年患者围术期体温维持及麻醉苏醒质量的改善效果。方法:选择2024年1月至2025年5月在重庆市人民医院拟择期行全身麻醉下...目的:探讨在进行经尿道前列腺切除术(transurethral resection of the prostate,TURP)过程中,使用石墨烯保温腿套对老年患者围术期体温维持及麻醉苏醒质量的改善效果。方法:选择2024年1月至2025年5月在重庆市人民医院拟择期行全身麻醉下TURP的患者100例,采用随机数字表法分为对照组和试验组,每组50例。对照组采用传统盖被保温加上预热毯进行保温护理,试验组采用传统盖被保温加上石墨烯保温腿套行保温护理。比较2组患者入室时、手术开始时、手术结束时、全麻拔管时、出手术室时、术后24 h、术后48 h体温,以及麻醉时长、手术结束至拔管苏醒时长、拔管至回送病房时长等苏醒质量相关指标以及术中冲洗液量。结果:2组患者在入室时、手术开始时、术后24 h、术后48 h的体温,差异均无统计学意义(P>0.05);试验组的手术结束时体温[(36.36±0.09)℃vs.(36.16±0.23)℃,P<0.001]、术后全麻拔管时体温[(36.36±0.13)℃vs(.36.20±0.18)℃,P<0.001]、出手术室体温[(36.43±0.13)℃vs.(36.32±0.15)℃,P<0.001]均明显高于对照组。试验组麻醉时长短于对照组[(160.4±20.7)min vs.(174.0±34.7)min,P<0.05];试验组手术结束至拔管苏醒时长[(19.2±3.2)min vs.(24.6±6.4)min,P<0.001]、拔管至回送病房时长[(24.6±3.1)min vs.(29.2±4.8)min,P<0.001]均明显短于对照组。结论:石墨烯保温腿套能有效维持老年患者TURP全身麻醉术中核心体温,改善术后早期体温,缩短麻醉及苏醒时间,对提高患者麻醉苏醒质量具有积极作用,值得临床推广应用。展开更多
文摘通过对由医疗成像设备获取的二维灰度图像进行形状重建,得到的三维立体原型能帮助医学诊断人员确诊病情。介绍了Shape from Shading的实现原理和扫描电镜成像系统的简单构成,提出了一种基于线性逼近的用于解决SEM反射映射函数的实现方法,并将之应用于红血细胞的三维图像重构,得到的细胞图形非常接近其真实形状。
基金State Tobacco Monopoly Administration of China (110200201008)
文摘The possibility of employing antagonistic bacteria for the control of tobacco brown spot was studied. Approximately 136 strains of bacteria were isolated from phyllospheres of tobacco and 9 of these possessed high levels of antagonistic properties, They significantly reduced brown spot in detached tobacco leaves when artificially inoculated with Alternaria alternata. Culture filtrate of the most effective bacterial isolate which designated as Tpb88 was shown to be very efficient in inhibiting mycelial growth of A alternata in dual cultures. Culture filtrate of Tpb88 inhibited germination and germ tube elongation of A alternata. The results showed that the culture filtrate directly inhibited spore germination of A alternata, especially during the first hours of the paired cultivation. The rate of antagonistic activity of culture filtrate of Tpb88 depended on its concentration in the mixture. The greatest inhibition of spore germination was ob served at the highest concentration of filtrate （filtrate to fungal spores inocula mixed in proportion 1 ： 50）. These suggest that the hypothetic mechanism of Tpb88 against tobacco brown spot is to produce antagonistic substances.
基金MOE(Ministry of Education in China)Project of Humanities and Social Sciences“A Study of Special Women group-Rural Daughter-in-Law in City in Building a Harmonious Society”(Project No.10YJA840034)
文摘Through field investigation,this paper discusses the social mobility of city wives from countryside and analyses the causes of the upward social mobility plight of this group in urban society.The author believes that city wives from countryside cannot continue to move upward in urban society because of their lack of culture capital and social capital.To break such plight of upward mobility for the group demands the system renovation.
基金Supported by National Fund of Natural Sciences(No.30671456,30771503)Key Science & Technology Programsof Fujian Province(No.2006S1001)+1 种基金Fujian Fund of Natural Sciences(No.B0620004)Key S&T InnovationItems of Fujian Academy of Agricultural Sciences(2007)
文摘Ninety wild strains of Agaricus collected in China,including 44 strains preliminarily identified as Agaricus bisporus by isozyme electrophoresis,were studied using SRAP and ISSR techniques.Eighteen specific SRAP bands and 12 specific ISSR bands were scored,and a cluster dendrogram was constructed.The 90 wild strains of Agaricus were separated into two major groups,the first consisting of wild strains of A.bisporus and the second consisting of other Agaricus strains.Forty-one wild strains of A.bisporus collected in Sichuan and Tibet formed four groups according to the geographical location of the collection area.White A.bisporus strains from Xinjiang and Tibet(Xinjiang Wild,AgX04 and AgX042)exhibited unique band patterns resulting in lower similarity coefficient values(10%～13%)when compared with brown or light-brown A.bisporus strains.
