Melanin is a biopolymer implicated in the protection of cellular membranes and DNA produced by melanocytes. This pigment has a dual role and should be considere
[摘要]本文主要探讨体育经济的概念及其意义,并分析了发展体育经济的基本途径,阐明了当前发展体育经济面临的问题,以促进对体育经济的发展。 [关键词]体育经济 第三产业 途径
Marine algae have been used as food since ancient times and today are consumed as a regular part of the diet. In this study, we hypothesized that H. grandifoliu
4,4’-Methylenebis(2-chloroaniline) (MBOCA) is a probable human carcinogen. Few studies have been performed regarding the genotoxicity of MBCOA, and the MBOCA m
决策是管理者的一项重要职能,但是本文认为决策的根本问题是决策者与其所处的环境的协调问题。环境既是决策者与之发生联系和相互作用的对象,又是决策活动的结果。决策的成功
本文介绍的新型多孔砖DS_1和DS_2,孔洞率高达33%~36%,自重轻,强度高,热工性能好,是一种多功能砖型。除常用墙体厚度外,尚能组砌成315、440等厚度的墙体。便于设计、施工,且能与
1) In order to achieve the visibility of the chitosan macromolecule for the UV optical system of the analytical ultracentrifuge on investigation of the molecula