Results 111 to 120 of about 89,033 (293)

Alkylation or Silylation for Analysis of Amino and Non-Amino Organic Acids by GC-MS?

Metabolites, 2011
Gas chromatography–mass spectrometry (GC-MS) is a widely used analytical technique in metabolomics. GC provides the highest resolution of any standard chromatographic separation method, and with modern instrumentation, retention times are very consistent
Silas G. Villas-Bôas, Kathleen F. Smart, Subathira Sivakumaran, Geoffrey A. Lane   +3 more
doaj   +1 more source

The Gravo-Magneto Limit Cycle in Accretion Disks

, 2011
Previous theoretical studies have found that repeating outbursts can occur in certain regions of an accretion disk, due to sudden transitions in time from gravitationally produced turbulence to magnetically produced turbulence.
Bath, Faulkner, Fleming, Gammie, Glassgold, Lin, Matsumura, Paczynski, Pringle, Terquem, Turner, Zhu, Zhu   +12 more
core   +1 more source

In Situ Regenerative Adduct Assisted p‐Type Doping of Organic Semiconductor

Advanced Materials, EarlyView.
An in situ regenerative adduct‐assisted (IRAA) doping strategy is introduced for p‐type doping of organic semiconductors. A regenerating adduct serves as the dopant, enabling highly efficient doping with a choice of counterions. The generality of this approach provides a scalable route to dope a wide range of hole‐transport materials with high thermal ...
Brijesh K. Patel, Arya Vidhan, Shubham Gupta, Vaishali Arunachalam, Simantini Nayak, Neeraj Bhatt, Ravi Shankar Singh, Shaibal K. Sarkar, Pabitra K. Nayak   +8 more
wiley   +1 more source

The Unstable Chromosphere: Predicting Thermal Farley–Buneman Instability Growth Across a Broad Range of Solar Chromospheric Conditions

The Astrophysical Journal
In the coldest regions of the solar atmosphere, models struggle to match observations. Recent work suggests the Thermal Farley–Buneman Instability (TFBI) may play an important role.
Samuel Evans, Meers Oppenheim, Juan Martínez-Sykora, Yakov Dimant   +3 more
doaj   +1 more source

Rayleigh-Taylor instability in partially ionized compressible plasmas: one fluid approach

, 2014
We study the modification of the classical criterion for the linear onset and growth rate of the Rayleigh-Taylor instability (RTI) in a partially ionized (PI) plasma in the one-fluid description, considering a generalized induction equation.
Collados, M., Diaz, A. J., Khomenko, E.
core   +1 more source

Advances in Halide Perovskites for Photon Radiation Detectors

Advanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang, Jieqi Wang, Xiaojun Cui, Carsten Ronning   +3 more
wiley   +1 more source

Magnetorotational Instability in Collisional Weakly Ionized Plasma with Distinct Species Velocities

The Astrophysical Journal
In a differential rotating system, we use the incompressible multifluid model to investigate the dynamics of a weakly ionized plasma placed in a vertical background magnetic field with radial shearing. The equilibrium current is taken into account.
Chenghao Zhang, Haijun Ren
doaj   +1 more source

Mineral Processing by Short Circuits in Protoplanetary Disks

, 2013
Meteoritic chondrules were formed in the early solar system by brief heating of silicate dust to melting temperatures. Some highly refractory grains (Type B calcium-aluminum-rich inclusions, CAIs) also show signs of transient heating.
D'Alessio, Paola, Ebel, Denton S., Hubbard, Alexander, Mac Low, Mordecai-Mark, McNally, Colin P.   +4 more
core   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Transient Shock Formation of Pulsed Electrothermal Plasma Discharge Confined in an Extended Bore

Journal of Thermal Science and Technology, 2010
An electrothermal gun possesses a great potential to be an efficient source of pulsed plasma discharge for nanomaterials production or thermal plasma spray coatings.
Kyoungjin KIM, Ho Sang KWAK, Joong-Youn PARK   +2 more
doaj   +1 more source