Results 111 to 120 of about 130,112 (316)

Double‐Sided Control of Product Type Preference in the Visible‐Light Initiated Reaction of 1,3‐Dicarbonyl Compounds with Alkenes

Advanced Synthesis &Catalysis, EarlyView.
Abstract The demonstrated light‐initiated addition of radicals formed on an active methylene group to styrene derivatives exhibits a product selectivity influenced by the presence of a protic solvent. Under protic conditions, the predominant products are branched compounds with the alkene moiety attached to the methylene group.
Małgorzata Pałyga, Jan Rzepiela, Sebastian Baś   +2 more
wiley   +1 more source

Electrical Resistivity Tomography Investigation of Permafrost Conditions in a Thermokarst Site in Fairbanks, Alaska

AIMS Geosciences
The degradation of permafrost poses severe environmental threats to communities in cold regions. As near-surface permafrost warms, extensive topographic variability is prevalent in the Arctic and Sub-Arctic communities.
Abdallah Basiru, Shishay T Kidanu , Sergei Rybakov , Nicholas Hasson, Moustapha Kebe, Emmanuel Osei Acheampong   +5 more
doaj   +1 more source

Fineness of gold from Alaska placers [PDF]

, 1941
P.S. Smith
openalex   +1 more source

Machine Learning‐Driven Multi‐Objective Optimization of Microchannel Reactors for CO₂ Conversion

Advanced Sustainable Systems, EarlyView.
This study introduces a novel method that combines CFD, RSM, and ML to improve a microreactor's performance utilizing the Sabatier reaction. A range of ML models is assessed, and the best one is selected to predict optimal reactor conditions. ML shows the ability to predict performance in just milliseconds, leading to a decrease in computational time ...
Sandeep Kumar, Parmod Kumar, Kuljeet Singh Grewal   +2 more
wiley   +1 more source

Past lode-gold production from Alaska [PDF]

, 1941
P.S. Smith
openalex   +1 more source

Real‐Time Wireless Detection of Heavy Metal Ions Using a Self‐Powered Triboelectric Nanosensor Integrated with an Autonomous Thermoelectric Generator‐Powered Robotic System

Advanced Science, EarlyView.
This study introduces a self‐powered environmental monitoring system that integrates a triboelectric nanosensor (TENS) with a robotic hand, controlled remotely by an exo‐hand and powered by a thermoelectric generator (TEG). The fully autonomous system detects Pb2⁺, Cr⁶⁺, and As3⁺ ions in real‐time and operates without external power, ideal for remote ...
Yan‐Tsz Huang, Arshad Khan, Anindita Ganguly, Kuldeep Kaswan, Sreerag Suresh, Yu‐Ying Cheng, Kuan‐Ming Lee, Jui‐Han Yu, Zong‐Hong Lin   +8 more
wiley   +1 more source

Mineral resources of Alaska, report on progress of investigations in 1914--Mineral resources of the Lake Clark-Iditarod region [PDF]

, 1915
P.S. Smith
openalex   +1 more source

High‐Speed 3D Printing Coupled with Machine Learning to Accelerate Alloy Development for Additive Manufacturing

Advanced Science, EarlyView.
This work shows combining high‐throughput experiments of metal 3D printing with data science‐driven prediction leads to faster alloy development. Researchers develop steel alloy specimens specifically for 3D printing by adjusting aluminum content (0–10 wt.%) and energy input during printing.
Avinash Hariharan, Marc Ackermann, Stephan Koss, Ali Khosravani, Johannes Henrich Schleifenbaum, Patrick Köhnen, Surya R. Kalidindi, Christian Haase   +7 more
wiley   +1 more source

Mineral resources of Alaska, report on progress of investigations in 1924. Summary of recent surveys in northern Alaska [PDF]

, 1926
P.S. Smith, J. B. Mertie, William T. Foran   +2 more
openalex   +1 more source

Upwarped Mountains in Alaska [PDF]

Science, 1907
n ...
openaire   +2 more sources