Results 111 to 120 of about 189,353 (349)

Nitrate Protocol [PDF]

open access: yes, 2003
The purpose of this resource is to measure the nitrate-nitrogen of water. Students will use a nitrate kit to measure the nitrate-nitrogen in the water at their hydrology site.
The GLOBE Program, UCAR (University Corporation for Atmospheric Research)
core  

Magnetic Field‐Driven Spin State Transformation in Promoting the Catalytic Activity of Doped Single‐Atom for Hydrogen Evolution Reaction

open access: yesAdvanced Materials, EarlyView.
A ferromagnetic RuSAs/Ni2P@Fe3O4 material is designed via a synergistic strategy of single‐atom doping and magnetic field‐driven spin‐state transformation. This strategy introduces new Ru single‐atom active sites for the hydrogen evolution reaction and facilitates the transition of Fe3+ (3d t2g) low‐spin electrons to a high‐spin state (3d eg ...
Chenjing Wang   +9 more
wiley   +1 more source

Colloidal Heterostructures Enable Interfacial Transport of Immiscible Molecules in Printable Organohydrogels

open access: yesAdvanced Materials, EarlyView.
Multiphase printable organohydrogels with tunable microstructures are developed to control molecular transport pathways for immiscible cargo. The tortuosity and domain size of the colloidal phases are tuned by adjusting temperature and shear during processing, which enables the tailoring of diffusion kinetics due to different transport pathways.
Riley E. Dowdy‐Green   +4 more
wiley   +1 more source

Phase‐Change Solvents for Thermally Switchable Ion Conduction in Organogels

open access: yesAdvanced Materials, EarlyView.
Organogels containing salts dissolved in phase‐change solvents exhibit thermally switchable ion conduction. The organogels, which display an over 10 000‐fold on‐off ratio and high cycling stability, can be synthesized with a wide range of salts and customizable conductivity/temperature relations for applications in ionotronics and energy storage ...
Yi‐ming Yuan, Thomas B. H. Schroeder
wiley   +1 more source

Detection of blood coagulation in an extracorporeal circuit using magnetic and absorbance properties

open access: yesAIP Advances
In extracorporeal circulation, intra-circuit blood coagulation can lead to serious problems. However, intra-circuit coagulation cannot be monitored in real-time and is only intermittently monitored by measuring the activated clotting time (ACT). As blood
Hideo Sakamoto   +4 more
doaj   +1 more source

The hydrolysis of N-benzoyl-L-argininamide by crystalline trypsin [PDF]

open access: yes, 1949
A reinvestigation of the kinetics of hydrolysis of N-benzoyl-n-argininamide by crystalline trypsin has led to the conclusion that the hydrolysis products enter into the over-all reaction as ...
Harmon, Kent M., Niemann, Carl
core  

Massive migration from the steppe is a source for Indo-European languages in Europe

open access: yes, 2015
We generated genome-wide data from 69 Europeans who lived between 8,000-3,000 years ago by enriching ancient DNA libraries for a target set of almost four hundred thousand polymorphisms. Enrichment of these positions decreases the sequencing required for
A Keller   +81 more
core   +2 more sources

Home - About - Disclaimer - Privacy