Low oxygen and low pH levels may have helped preserve the soft tissue, the team reports in a paper published this week in the Journal of Crustacean Biology.

低氧低酸碱度的环境可能对软组织的留存有所帮助，研究组在这周的《甲壳生物》里这样报道。

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The effects of iron level in diatomite and pH value of beer on antioxidative activity of beer is studied in this paper by DPPH-spectroscopy.

本文采用DPPH 分光光度法，研究了硅藻土的铁离子含量和啤酒pH 值在过滤阶段对啤酒抗氧化力的影响。

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This paper present a sufficient and necessary condition of constructing quintic PH curves and analyze the geometric meaning of the control polygon.

本文给出了构成五次PH曲线的充要条件，分析了其控制多边形的几何意义。

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Editorial writer Rapheal Reece-Harrel(ph) has used his column in the free paper Metro to exhort Mexicans to participate in response to widespread marches in the United States.

NPR: Immigration Activists Target U.S. Businesses in Mexico

Mr. ROLAND MARTIN (Executive Editor, Chicago Defender): Well, I mean, first of all, John Shinstack(ph), when he died, left the paper to the trust and--for them to do as they so wished.

NPR: Roundtable: Voting Rights Act, NABJ Conference