Results 41 to 50 of about 779,144 (306)

On commutative polarizations

open access: yesJournal of Algebra, 2003
The purpose of this paper is to study finite-dimensional Lie algebras over a field k of characteristic zero which admit a commutative polarization (CP). Among the many results and examples, it is shown that, if k is algebraically closed, the nilradical N of a parabolic subalgebra in A_n and C_n has such a CP.
ELASHVILI, Alexander, OOMS, Alfons
openaire   +4 more sources

Growth and Property Investigations of Two Organic–Inorganic Hybrid Molecular Crystals with High Thermal Stability: 4-Iodoanilinium perchlorate 18-crown-6 and 4-Iodoanilinium Borofluorate 18-crown-6

open access: yesCrystals, 2019
Two new organic–inorganic hybrid molecular single crystals, 4-Iodoanilinium perchlorate 18-crown-6 (1) and 4-Iodoanilinium borofluorate 18-crown-6 (2), with large sizes and high thermal stability were successfully synthesized by solution method ...
Lihui Zhang   +5 more
doaj   +1 more source

Polarization and polar climate [PDF]

open access: yesEos, Transactions American Geophysical Union, 2012
International Polar Year 2012 Conference: From Knowledge to Action;Montreal, Quebec, Canada, 22–27 April 2012 As a follow‐ up to the 2007–2008 International Polar Year (IPY), more than 3000 international participants came together in April 2012 at a conference entitled “From Knowledge to Action.” The conference addressed a broad scope of topics beyond ...
James Overland, Peter Schweitzer
openaire   +1 more source

On the Measurement of Polarization [PDF]

open access: yesEconometrica, 1994
Summary: Suppose that a population of individuals may be grouped according to some vector of characteristics into ``clusters'', such that each cluster is very ``similar'' in terms of the attributes of its members, but different clusters have members with very ``dissimilar'' attributes. In that case we say that the society is polarized.
Esteban, Joan, Ray, Debraj
openaire   +1 more source

Liquid-Filled Hollow Core Bragg Fiber Sensors Using Different Bandgaps for High-Refractive-Index Sensing

open access: yesIEEE Photonics Journal, 2019
Liquid-filled hollow core Bragg fibers (HCBFs) provide an excellent platform for refractive index (RI) sensing. The capacity for high-RI sensing based on higher order bandgaps of an HCBF is explored for higher sensitivity.
Liang Shang, Sujuan Feng
doaj   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

open access: yesFEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai   +4 more
wiley   +1 more source

Polarization singularities in the clear sky

open access: yes, 2004
Ideas from singularity theory provide a simple account of the pattern of polarization directions in daylight. The singularities (two near the Sun and two near the anti-Sun) are points in the sky where the polarization line pattern has index +1/2 and the ...
R L Lee   +11 more
core   +1 more source

Correlation analysis and application investigation of multi-angle simultaneous polarization measurement data and concentration of suspended particulate matter in the atmosphere

open access: yesFrontiers in Environmental Science, 2022
Determining the composition, particle size distribution and concentration changes of suspended particulate matter in the atmosphere is important for evaluating the quality of air and its impact on public health.
Xuan Yuan   +6 more
doaj   +1 more source

Modelling stem cell differentiation related processes—A practical overview for biologists

open access: yesFEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar   +4 more
wiley   +1 more source

A Smartphone-Based Biosensor for Non-Invasive Monitoring of Total Hemoglobin Concentration in Humans with High Accuracy

open access: yesBiosensors, 2022
In this paper, we propose a smartphone-based biosensor for detecting human total hemoglobin concentration in vivo with high accuracy. Compared to the existing biosensors used to measure hemoglobin concentration, the smartphone-based sensor utilizes the ...
Zhipeng Fan   +4 more
doaj   +1 more source

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