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I am not a technical high school student. I am an ordinary middle school student attending a combined junior and senior high school. Even so, the term "5S" has been on my mind lately. When you hear "chemistry experiment," Test tubes.
Nature (2026) Cite this article The Original Article was published on 15 July 2026 In the version of the article initially published, the Competing interests statement was incorrect and has now been amended in the HTML and PDF versions of the article. Advanced…
RAPID CITY, S.D. (KOTA) - South Dakota Mines is celebrating National Chemistry Week by giving middle school students a hands-on look at the science of matter. Eighth grade students from the region tried the flame test, where different metals are burned to…
Apatite rare-earth-element (REE) compositions can discriminate igneous host-rock types, but systematic comparisons of deep-learning models and alternative REE representations remain limited, while analyses from shared publications or geological bodies complicate estimates of generalization. We evaluated four-class classification in a cohort…
A steel tank can be stripped of its old coating and still need further preparation before a new lining goes on. On a commercial roof, clearing the stone exposes the membrane; it does not establish whether that membrane is ready…
Robert Wethman, Associate Scientific Director, has spent more than two decades at Bristol Myers Squibb working at the intersection of analytical science and manufacturing, where the discipline plays both a foundational and increasingly strategic role in pharmaceutical development. A career…
AOAC. (1995). Official Methods of Analysis of AOAC International (16th ed.). AOAC International. Asnawi, S., Abd. Aziz, A., Abd. Aziz, R., & Khamis, A. K. (2008). Formulation of geranium oil loaded solid lipid nanoparticles for mosquito repellent application. Journal of Chemical & Natural Resources Engineering, 2, 90–99. OECD. (1984). OECD Guideline for Testing…
The researchers first synthesized zirconium- and hafnium-based UiO-66 metal-organic frameworks through solvothermal reactions involving zirconium chloride or hafnium chloride, H2BDC, N,N-dimethylformamide and hydrochloric acid. Glacial acetic acid was then added to encourage gelation. Three precursor concentrations were examined for each…
a Ring closure of the linear precursor. b–e Ring expansion polymerization. f Living ring expansion polymerization of palladacycle for the synthesis of well-defined cyclic poly(aryl isocyanide). R, R’, R1, R2 = Substituents, L = Ligand, n = Number of ligands attached to the metal…
Technology Networks Tiny magnetic probes can be used to investigate the chemical forces at work inside the pores of molecular framework compounds Until now, this had only been possible to a limited degree Developed by a team at Martin Luther…