Alexander von Humboldt

n‐Type Mg3Sb2–Mg3Bi2 alloys are one of the most potent thermoelectric materials for low‐ (near room temperature) to mid‐temperature range because of their highly degenerate conduction band structure and extremely low phonon thermal conductivity. Since the discovery of n‐type Mg3Sb1.5Bi0.5 with zT of 1.6 at 700 K in 2016, extensive research…

Abstract In the present study reports 1,3‐dipolar cycloaddition reactions starting from easily accessible N‐cyano sulfoximines. In a straightforward manner, sulfoximines with N‐1,2,4‐triazolyl and N‐1,2,4‐oxadiazolyl substituents are prepared in good yields, While the former reactions require the presence of Yb(OTf)3 in catalytic amounts, the latter proceed metal‐free. Abstract Involving the cyano…

A common way of stabilizing silylium ions is by Lewis pair formation with σ‐basic molecules to yield onium ions.1 Under certain circumstances, that is with no such Lewis base present in the reaction medium, even an Si−H bond can lend stabilization to a silylium ion in the form of a…

Black holes are famous for being inescapable. Within the event horizon of these celestial objects, matter and even light enter and then disappear forever. However, beyond the event horizon, black holes are known to form accretion disks from which light can escape. In fact, this is how astronomers are able…

Charging/discharging metal ions is the key process for the storage of electric energy in the form of chemical energy in various metal‐ion batteries. This process is based on the redox reaction of electrode materials, accompanied by insertion and desertion of the metal cations, respectively.1 The reversibility of the reaction determines…

Introduction N‐Heterocyclic carbenes (NHCs) define a highly versatile field of chemistry. Significant portion of this knowledge and the corresponding applications grew out of a series of experiments at the end of the 19th century, in which Eijkman observed that rice husk prevents beriberi‐like symptoms of malnutritioned hens.1 In the following…

Introduction Laccases (p‐diphenol:dioxygen oxidoreductase, EC 1.10.3.2), a class of multicopper oxidase, are widely distributed among eukaryotes and prokaryotes.1 Most laccases contain four Cu atoms per laccase molecule, one Type 1 (T1) Cu and a trinuclear Cu cluster comprised of Type 2 and binuclear Type 3 (T2/T3) Cu atoms. These four Cu atoms participate…

Translational Cancer Mechanisms and Therapy Joan M. Romero, Barbara Grünwald, Gun-Ho Jang, Prashant P. Bavi, Aaditeya Jhaveri, Mehdi Masoomian, Sandra E. Fischer, Amy Zhang, Robert E. Denroche, Ilinca M. Lungu, Angela De Luca, John M.S. Bartlett, Jing Xu, Niandong Li, Sharon Dhaliwal, Sheng-Ben Liang, Dianne Chadwick, Foram Vyas, Peter Bronsert,…

Introduction The fungal endophyte Epichloë festucae forms symbiotic associations with temperate grasses of the Festuca, Lolium and Koeleria genera (Leuchtmann et al., 1994). Hyphae grow in the intercellular (apoplastic) spaces of aerial tissues, systemically colonizing the host leaf sheath, leaf blade, and inflorescences (May et al., 2008; Scott et al.,…

IMAGE: The proportion of total inequality that is between firms for the total (left), private (middle) and public sectors (right). The proportion of total inequality attributable to the between-workplace component has... view more  Credit: UMass Amherst/Tomaskovic-Devey AMHERST, Mass. - A new analysis of earnings inequalities by an international team of 27…