The use of superabsorbent polymers or hydrogels could increase the water holding capacity (WHC) of sandy soil and reduce water loss by deep percolation.However,
阐述了制作电阻的原理，介绍了制作低值电阻的方法技巧，制作出了标称值为O．01000Ω的低值电阻，用开尔芬电桥对其进行了测量，给出了测量结果及其标准不确定度，并对该项创新性实验进行
患儿男,10岁。主诉：腹部包块并腹痛7天。查体：腹外形稍膨隆,腹肌软,于剑突下扪及包块,包块直径约5cm,质硬,无压痛,无波动感,与周围界限不清,不可推动。实验室检查：乙肝表面抗原
Ultisols,widely distributed in tropical and subtropical areas of south China,are suffering from serious water erosion,however,slope hydrological process for Ult
Rooftop rainwater harvesting (RRWH) systems can provide low-cost decentralized water to urban and rural households that have no access to treated water.These sy
目的探讨CT导向下癌组织内植入放射粒子125I联合支气管动脉灌注化疗治疗中晚期肺癌的临床价值。方法回顾分析经病理证实的中晚期中心型肺癌42例,先行CT引导下放射粒子125I植
肝体阴用阳,易动而难静.肝阴肝血一旦不足,肝气既可乘脾,亦可上而冲心,或上而侮肺,任其纵横,所以肝无单纯之虚证,以虚实兼夹为常见.<内经>治肝有三法,"肝欲酸"(<素问*五藏生
This study was conducted to assess agricultural practices for generating maximum maize productivity in drought prone agro-ecological zones. The experiment was c
中医已有2000多年的悠久历史,但自明、清以后,特别是近100年来,中医学受到西方医学前所未有的严峻挑战.笔者认为主要有下列三方面的原因.
本项目为全国首次提出采用直肠内外注射消痔灵液治疗直肠脱垂的方法.治疗效果确切,治愈率达93.33﹪,基本无并发症、后遗症.适应症广泛,治疗方法简单.