Results 131 to 140 of about 373,057 (342)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

When are Fossils Data?

Philosophy, Theory, and Practice in Biology
Existing accounts of data are unclear about whether the epistemic role objects play makes them data, or whether data have to be produced by human interaction with the world – these two features can come apart.
Aja Watkins
doaj   +2 more sources

I.—A Collection of Egyptian Fossil Madreporaria [PDF]

, 1898
J. W. Greǵory
openalex   +1 more source

Bias‐Free Solar Upcycling of Nitrate and Glycerol with Highly Efficient and Durable Organic Semiconductor‐Based Photoelectrodes

Advanced Materials, EarlyView.
A bias‐free photoelectrochemical (PEC) upcycling system integrating bi‐functional nickel‐iron‐phosphorus (Ni‐Fe‐P) catalysts with organic semiconductor (OS)‐based dual photoelectrodes is reported. The system enables simultaneous solar‐driven conversion of nitrate to ammonia and glycerol to formic acid with high efficiency and stability.
Yejoon Kim, Jee Hyeon Kim, Enok Lee, Sanseong Lee, Yoonsung Jung, Yunseo Jang, Inhyeok Oh, Jun Beom Hwang, Jungdae Lee, Kwanghee Lee, Hyunseob Lim, Sanghan Lee   +11 more
wiley   +1 more source

I.—On some new fossil fish of the carboniferous period [PDF]

Frederick M‘Coy
openalex   +1 more source

XVII.—Fossil insects from the Miocene of Colorado [PDF]

, 1927
T. D. A. Cockerell
openalex   +1 more source

Elastic Energy Storage in Biological Materials: Internal Stresses and Their Functionality

Advanced Materials, EarlyView.
Harnessing and storing internally generated elastic energy is a clever strategy by biological materials to perform functions like shape transformation, movement, and predation. This review explores how biological systems manipulate mechanisms like atomic or protein integration into minerals, protein conformational shifts, phase transitions, and osmotic
Shahrouz Amini, Paul Zaslansky, Boaz Pokroy, Peter Fratzl   +3 more
wiley   +1 more source

XXXIV. On the affinity of some fossil scales of fish from the lancashire coal measures with those of the recent salmonidæ [PDF]

W. C. Williamson
openalex   +1 more source

Ce Single Atom‐Engineered Amorphous/Crystalline Nanosheets for Enhanced Alkaline Water Electrolysis

Advanced Materials, EarlyView.
We leveraged Ce single‐atom engineering to generate short‐range ordered crystalline nanodomains in amorphous RuOx for creating amorphous/crystalline nanojunctions, in an effort to regulate the water dissociation kinetics for enhanced HER. Specifically, the Ce‐doped crystalline nanodomains greatly reduce the energy barrier to water dissociation and ...
Xinyu Chen, Min Bi, Qingdian Yan, Deqi Fan, Biao Huang, Bianjing Sun, Chenchen Qin, Chuntao Chen, Dongping Sun, Qian He, Ming Zhao   +10 more
wiley   +1 more source

The Recent Discovery of Fossil Remains at Lake Calabonna, South Australia:1I. [PDF]

, 1894

openalex   +1 more source