Between the 1940s and the 1960s there was a significant lowering of the surface temperatures of the central North Pacific. This cool-down is discussed on the ba
A short phylogenetic marker previously used in the reconstruction of the Order Bacillales and the genus Bacillus was assessed here at a lower taxa level: specie
Municipal sludge was rich in organic matter, period of natural degradation was long and low efficiency, leachate would pollute underground water. In this paper,
博白县水稻病虫害发生随着外部环境的变化呈现新态势，如果能够分析其发病原因，就可以制定相应的防治措施，这对发展博白县水稻种植有重要现实意义。本文通过对博白县水稻病虫害发
提起圆葱,大家好像都不屑一顾,虽然它不算太好吃,但营养价值非常高,含有钙、磷、铁、维生素、碳水化合物,还有胡萝卜素,而且不含令人发胖的脂肪,能舒张血管,减少冠状动脉硬化
<正> 我厂是目前国内最大的电石生产厂家。电石产品的产量、质量、消耗等指标直接受到电石炉变压器的安全、可靠运行所制约。因此,如何快捷、准确的判定电石炉变压器运行状态
本文通过对核桃的生长发育周期所需要的基本生态条件与当地气象条件对比分析得知：沂水县的气候条件：年平均日照时数充足，热量条件能很好的满足核桃的生长，无霜期长，雨季降水丰富，非
To help swimmers improve, we have developed a computational swimming model using underwater manipulator dynamics. We formulate the equations of the underwater m
母猪繁殖障碍疾病是养猪业不容忽视的问题,由于饲养环境比较复杂,母猪容易患繁殖障碍疾病,导致怀孕母猪流产或产下死胎,给养殖户带来了巨大的经济损失。本文论述了影响母猪繁
章本文主要从电磁兼容的角度进行讨论和研究，根据当前地下建筑物自身的构架和结构自身的特点进行了充分的考虑，对于需求下的防雷区进行了构架和规划，同时对整个防雷设计的构架进