Pine bark removes pharmaceutical residues from wastewater—an affordable way to keep antibiotics out of nature

Researchers at the University of Oulu, Finland, have developed a pine-bark–based water-treatment medium that efficiently removes antibiotics as well as residues of blood-pressure and antidepressant ...
GBH

Polyester clothing has been causing a stir online. But how valid are the concerns?

There has been a lot of conversation on social media about the downsides of polyester. But are those downsides as bad as they ...
SciELO

1,3-thiazolium-5-thiolates mesoionic compounds: semiempirical evaluation of their first static hyperpolarizabilities and synthesis of new examples

Semiempirical AM1-TDHF calculations of the static first hyperpolarizabilities, β(0), of 1,3-thiazolium-5-thiolate mesoionic derivatives were performed. Guided by these results, two new mesoionic ...
IEEE

Mathematical Modeling of Organic Compounds on the Example of the Cyclic Compound Cyclobutanecarbonitrile

Abstract: This paper describes software for designing homodesmic reactions using the example of a cyclic compound of cyclobutanecarbonitrile. The homodesmic method showed high reliability of the ...
Science Daily

Don’t toss cannabis leaves. Scientists just found rare compounds inside

Scientists at Stellenbosch University have uncovered a rare class of plant compounds, flavoalkaloids, in Cannabis leaves for the first time. Using advanced two-dimensional chromatography and mass ...
Frontiers

Comparing verbal and visual representations of grade-9 natural sciences concepts, constructs, and principles of matter and materials in three textbooks and the CAPS policy document

Mathematics Natural Science and Technology Education, University of the Free State, Bloemfontein, South Africa Due to the freedom afforded natural sciences textbook authors globally and in South ...
Carnegie Institution for Science

Dinitrogen as a Universal Electron Acceptor in Solid-State Chemistry: An Example of Uncommon Metallic Compounds Na-3(N-2)(4) and NaN2

With the exception of lithium, alkali metals do not react with elemental nitrogen either at ambient conditions or at elevated temperatures, requiring the search for alternative synthetic routes to ...
Scientific Research Publishing

Macheix, J., Fleuriet, A. and Jay-Allemand, C. (2005) Phenolic Compounds of Plants: An Example of Secondary Metabolites of Economic Importance. Ed. Polytechnic and University ...

ABSTRACT: The fight against bacterial infections is essentially based on the use of antibiotics. Unfortunately, bacteria have developed resistance mechanisms against antibiotics, particularly those of ...
C&EN

Uncovering compounds that tame the heat of chili peppers

When biting into a chili pepper, you expect a fiery sensation on your tongue. This spiciness is detected because of capsaicinoid compounds. But for some peppers, despite high levels of capsaicinoids, ...
C&EN

Chemists create chiral molecules using cobalt catalysts and a zap of electricity

Metals like rhodium and palladium are C–H activation aces, but these metals are rare and expensive. For several years, chemists led by Lutz Ackermann at the Georg August University Göttingen have been ...