Unlike the well-understood cold limit of trees,the causes of the dry trailing edge of trees await explanation.Here we ai......

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　　Chemistry of hydroxy-hydrated borates in nature is surprisingly intricate.It is known that polyborates exist within ......

研究了由FeSO4制备聚合硫酸铁过程中,钛对聚铁聚合态分布和稳定性的影响,并进一步考察了含钛聚合硫酸铁的絮凝性能.应用络合比色法......

目的 了解医院临床分离病原菌及其耐药情况,为临床合理使用抗菌药物提供依据.方法 采用细菌分离鉴定技术和药敏试验方法,对某医院......