小米醋博物馆

正地点:中国山东省淄博市王村原有建筑面积:667平方米加建改造后面积:835.65平方米竣工日期:2018年10月20日王村小米醋博物馆位于山东省淄博市周村区王村镇,是在山东华王酿造有限公司厂区原有建筑基础上进行改扩建而成。由于年代久远,加工厂现状已破旧不堪,急需进行改扩建,展现小米醋悠久的历史,铸造醋文化的品牌。     

Reduced texaphyrin: A ratiometric optical sensor for heavy metals in aqueous solution

We report here a water-soluble metal cation sensor system based on the as-prepared or reduced form of an expanded porphyrin, texaphyrin. Upon metal complexation, a change in the redox state of the ligand occurs that is accompanied by a color change from red to green. Although long employed for synthesis in organic media, we have now found that this complexation-driven redox behavior may be used to achieve the naked eye detectable colorimetric sensing of several number of less-common metal ions in aqueous media. Exposure to In(III), Hg(II), Cd(II), Mn(II), Bi(III), Co(II), and Pb(II) cations leads to a colorimetric response within 10 min. This process is selective for Hg(II) under conditions of competitive analysis. Furthermore, among the subset of response-producing cations, In(III) proved unique in giving rise to a ratiometric change in the ligand-based fluorescence features, including an overall increase in intensity. The cation selectivity observed in aqueous media stands in contrast to what is seen in organic solvents, where a wide range of texaphyrin metal complexes may be prepared. The formation of metal cation complexes under the present aqueous conditions was confirmed by reversed phase high-performance liquid chromatography, ultra-violet-visible absorption and fluorescence spectroscopies, and high-resolution mass spectrometry.     

浅谈轨道巷施测中导线精度的提高

井下导线测量不可避免地存在各种误差,文章结合实例,通过对煤峪口矿14号煤层410轨道巷的实测,提出了相应的技术措施,以提高导线测量精度。     

A boronic acid-based fluorescent hydrogel for monosaccharide detection

A boronic acid-based anthracene fluorescent probe was functionalised with an acrylamide unit to incorporate into a hydrogel system for monosaccharide detection. In solution, the fluorescent probe displayed a strong fluorescence turn-on response upon exposure to fructose, and an expected trend in apparent binding constants, as judged by a fluorescence response where D-fructose>D-galactose>D-mannose>D-glucose. The hydrogel incorporating the boronic acid monomer demonstrated the ability to detect monosaccharides by fluorescence with the same overall trend as the monomer in solution with the addition of D-fructose resulting in a 10-fold enhancement (≤0.25 mol/L).     

《柴油机设计与制造》征稿启事

《柴油机设计与制造》创刊于1979年,是一本由上海汽车工业(集团)总公司主管,上海柴油机股份有限公司主办的学术性、技术性、实用性较强的科技期刊。本刊国内外公开发行,在发动机行业中有一定的影响力。《柴油机设计与制造》是《中国期刊学术期刊(光盘版)》(中国知网)全文收录期刊,是《中国核心期刊(遴选)数据库》(万方数据)、《中文科技期刊数据库》(重庆维普)及《中国期刊综合评价数据库》数据库刊源期刊。