吸食大麻会降低生育能力

来源 :中国性科学 | 被引量 : 0次 | 上传用户:c1b2n3
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
<正> 据路透社报道:纽约州立大学布法罗分校是世界上第一所研究精子在吸食大麻男子体内移动规律的科研机构。此项研究的负责人博可门说,精子在吸食大麻男子体内移动的速度过快,并且在成熟早期便开始移动。在这些精子和卵子受精前,它们的移动速度近于疯狂,这样便打乱了人体的自然规律系统。
其他文献
We study in the framework of the Langevin model the influence of initial excitation energy(E*) of Hg compound nuclei(CNs) on the sensitivity of the excitation e
The position decoding accuracy and the spatial resolution of positron emission tomography detectors are greatly influenced by the performance of the two-dimensi
<正>E-beam degradation of bisphenol A(BPA) was carried out,under reductive condition of ethanol-water solution and oxidative condition of acetonitrile-water sol
<正>Some metal compounds called as Non-Evaporable-Getter have been widely used to improve vacuum system performance of accelerator facility.In this paper,a TiZr
A novel histidine derivative containing 4-nitroimidazole,(S)-2-(4-((4-nitro-1H-imidazol-1-yl) methyl) benzamido)-3-(1H-imidazol-4-yl)propanoic acid (His-NI),was
本文根据误差理论分析并比较了在近地面层内各种间接确定湍流通量方法的观测误差。空气动力学法由于采用不同的通用函数将造成很大的误差。H扣除法确定潜热通量,当Bowen比较
In this paper,an improved decision model is developed for its use as a tool to respond to emergencies at nuclear power plants.Given the complexity of multi-attr
<正>In this paper,a digitalizing board for readout of PMT signals in the prototype array of WCDA(water Cerenkov detector array)for LHAASO(Large high altitude ai
<正>In this paper,energy loss of alpha particles in different vacuum levels is studied experimentally and via theoretical analysis.A better understanding of ene