塑料大棚栽培蔬菜容易发病,特别是固定的大棚结构,长期连作后,更容易引起发病。为了减轻或防止病害的发生,除采用移动式或半固定式的大棚结构外,应重视对土壤进行消毒。一般
Hydroxyethylidene diphosphonate(HEDP) was prepared and labeled with rhenium-188. Its lyophilized kit was developed for instant preparing of188Re-HEDP.188Re-HEDP
1临床资料患者女性,6岁,右小腿畸形6年,否认外伤史,查体：右小腿前凸,有包块,较硬,皮肤无破损,肤色正常,患者智力,身高正常,行走破行。常规检查方法：右胫骨正侧位,包括右膝关节（
1 病例资料男，55岁。因反复左腰腹痛2月加重2h，CT提示左肾轻度积水、肾周及腹膜后间隙炎症改变，为进一步明确诊断作静脉肾盂造影检查，碘过敏试验阴性后泛影葡胺注射液40ml静脉推
The extraction algorithms for pulse amplitude and smoothing of energy spectrum have a great influence on energy spectrum of γ-rays during the digital detection
A nuclear spectrum generator for semiconductor X-ray detectors is designed in this paper. It outputs step ramp signals with random distribution in amplitude and
在实验室规模的流动床结晶罐中，４０℃下，测定蔗糖晶体的速度，有助于预测工业结晶罐中蔗糖晶的生长速度，作为研究方案的一个部分。