Results 151 to 160 of about 139,083 (290)
ABSTRACT Kalavan‐2, a high‐altitude (∼1640 m a.s.l.) open‐air site in Armenia, preserves stratified Middle Paleolithic occupations with a rich small‐vertebrate record. Luminescence dating has placed site formation between ~60 and 45 ka, but without independent chronological control of the microvertebrate accumulation.
Dominik L. Rogall +4 more
wiley +1 more source
Jacobi spectral collocation method for the approximate solution of multidimensional nonlinear Volterra integral equation [PDF]
Yunxia Wei +3 more
openalex +1 more source
Abstract Atmospheric gravity waves (GWs) are believed to transport energy and momentum between different regions of the atmosphere. Historically, observations of these waves from both ground and space have been relatively abundant at altitudes up to the lower thermosphere, and somewhat less abundant in the upper thermosphere and F‐region ionosphere ...
Scott L. England +3 more
wiley +1 more source
A SIMPLE AUGMENTED JACOBI METHOD FOR HERMITIAN AND SKEW-HERMITIAN MATRICES [PDF]
Chohong Min, Soo-Joon Lee, Se-Goo Kim
openalex +1 more source
Abstract Resuspension of fine‐grained bottom sediment under wind‐driven currents and waves is a key process in shaping nearshore environments. Commonly, resuspension is quantified for predicting the dispersion of contaminants and nutrients affecting water quality by numerical modeling and field measurements. Although a large body of research deals with
H. Eyal +5 more
wiley +1 more source
A reactor is described, whose modular design enables in situ X‐ray scattering and spectroscopy, infrared spectroscopy, gas and liquid injection under autoclave‐like conditions and magnetic stirring for solvothermal synthesis up to 200°C and 8 bar.Understanding the chemical processes that occur during the solvothermal synthesis of functional ...
Sani Y. Harouna-Mayer +16 more
wiley +1 more source
Unified Asymptotics for Investment Under Illiquidity: Transaction Costs and Search Frictions
ABSTRACT This paper investigates the optimal investment problem in a market with two types of illiquidity: transaction costs and search frictions. We analyze a power‐utility maximization problem where an investor encounters proportional transaction costs and trades only when a Poisson process triggers trading opportunities.
Tae Ung Gang, Jin Hyuk Choi
wiley +1 more source
Optical wave propagation in magneto-optic waveguides with generalized anti-cubic model. [PDF]
Baber MZ +4 more
europepmc +1 more source
Using an old method of Jacobi to derive Lagrangians: a nonlinear dynamical system with variable coefficients [PDF]
M. C. Nucci, K. M. Tamizhmani
openalex +1 more source
Phenolic compounds in species of the Blechnaceae
The occurrence of caffeic acid derivatives in 32 species of Blechnaceae revealed differences in the presence of rosmarinic acid and blechnic acid B, a novel compound in ferns. Abstract Rosmarinic acid and other caffeic and 4‐coumaric acid derivatives are widespread in land plants.
M. Ufland, M. Petersen
wiley +1 more source

