Results 1 to 10 of about 2,443,108 (120)

Cluster analysis of karyotype similarity coefficients in Epimedium (Berberidaceae): insights in the systematics and evolution [PDF]

open access: yesPhytoKeys, 2020
In order to evaluate the genome evolution and systematics, karyotype analysis of mitotic metaphase chromosomes in 51 taxa of Epimedium and two species of Vancouveria was conducted.
Lin-Jiao Wang   +3 more
doaj   +3 more sources

Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon

open access: yesEcological Indicators, 2023
Organic carbon occluded in phytoliths is extremely stable and plays important roles in long-term preservation of soil and stable carbon sequestration in terrestrial ecosystems.
Linjiao Wang, Ke Wang, Maoyin Sheng
doaj   +1 more source

Undergraduate basic sciences and engineering students’ understanding of the concept of derivative

open access: yesJournal of Research and Advances in Mathematics Education, 2021
Derivative is one of the most important topics in calculus that has many applications in various sciences. However, according to the research, students do not have a deep understanding of the concept of derivative and they often have misconceptions.
Saeid Haghjoo, Ebrahim Reyhani
doaj   +1 more source

The word pearl in Russian poetry and its Chinese roots

open access: yesНеофилология, 2021
The object of the analysis is the word pearl in the Russian language. The subject of the study is to consider the functioning of this lexeme in Russian poetry. The analysis uses descriptive, comparative, and stylistic methods. The word pearl was borrowed
Jiatong Weng
doaj   +1 more source

Aerodynamic characteristics and load of aerostats during flight [PDF]

open access: yesTehnika, 2015
Together with increased interest for aircraft type like aerostats, there is a specific need to study and describe the aerodynamics of the aerostat, experimentally as well as analytically and theoretically.
Janković Aleksandar M.   +2 more
doaj   +1 more source

Fractional Derivative as Fractional Power of Derivative [PDF]

open access: yes, 2007
Definitions of fractional derivatives as fractional powers of derivative operators are suggested. The Taylor series and Fourier series are used to define fractional power of self-adjoint derivative operator.
Berezin F. A.   +25 more
core   +1 more source

PECULIARITY OF CULTIVATION OF COULIFLOWER AND BROCCOLI IN EDAPHIC-CLIMATIC ZONE OF PLAIN, PIEDMONT, AND MOUNTAIN PROVINCES OF DAGESTAN

open access: yesОвощи России, 2015
Results of the study of possibility of cultivation of cauliflower and broccoli in the context of vertical zonality of Dagestan are presented. Physiological  characteristics, agriculture, and cultivation of early maturing varieties of cauliflower and ...
Ye. G. Gadjimustapaeva, G. G. Rabadanov
doaj   +1 more source

Perturbative reduction of derivative order in EFT [PDF]

open access: yes, 2017
Higher derivative corrections are ubiquitous in effective field theories, which seemingly introduces new degrees of freedom at successive order. This is actually an artefact of the implicit local derivative expansion defining effective field theories. We
Glavan, Dražen
core   +2 more sources

A Note on Supersymmetric WZW term in Four Dimensions [PDF]

open access: yes, 2001
We reconsider the supersymmetric Wess-Zumino-Witten (SWZW) term in four dimensions. It has been known that the manifestly supersymmetric form of the SWZW term includes derivative terms on auxiliary fields, the highest components of chiral superfields ...
Gates S. J., MUNETO NITTA, Witten E.
core   +4 more sources

The tests of the belonging of functions to the classes Fn(D) and Qn(D)

open access: yesLietuvos Matematikos Rinkinys, 2021
In the work with the aid of the divided and finite differences are introduced classes Fn(D) and Qn(D) of functions holomorphic in region D. Different properties of functions from these classes are studied, the tests of the belonging of functions to the ...
Jevgenijus Kirjatskis   +1 more
doaj   +1 more source

Home - About - Disclaimer - Privacy