简介：AbstractMost of the medical and nonmedical research labs, all around the world, are racing against time to produce an effective vaccine or an antiviral medicine for coronavirus disease 2019 (COVID-19). Conventional medicines and novel nano-materials including chemical and herbal-based compounds are all into positive trials toward coronaviruses and other pandemic infections. Among them, natural immune boosters have attracted physicians because of their longevity and reliability for fewer side effects. This is a review article with a detailed picture of an unexplored antiviral source with maximum potency in curing viral infections. Cyanobacteriae have been known for centuries and are rich in secondary metabolites of proteins, biopeptides, and polysaccharides for prominent antiviral action against chest infections. But detailed exploratory research is required to purify, scale-up, and commercialize the pharmacologically active agents from these drug reserves.

简介：摘要：沥青混凝土心墙堆石坝为水电工程中常见坝型，在国内外均有广泛应用。沥青混凝土心墙作为大坝防渗建筑，其施工质量将直接影响到大坝坝体的防渗能力和使用寿命。然而，如何才能有效确保沥青混凝土心墙施工质量呢？本文通过巴基斯坦卡洛特水电站项目沥青混凝土心墙的实施案例，全面阐述了沥青混凝土心墙的施工过程，对类似项目在实施过程中的原料选用、工艺流程及技术参数等质量控制有较大的借鉴意义。