Results 21 to 30 of about 404 (279)
Stable Isotope Ratios δ18O, δ13C in Petroleum Geology Application
Isotopic studies are currently among the most prioritized methods for addressing critical challenges in petroleum geology, particularly in determining the nature and sources of organic matter. This paper briefly presents the results of utilizing isotopic
E. A. Krasnova +5 more
doaj +2 more sources
Soil-epikarst thickness and near surface characteristics are important components in understanding surface and groundwater interactions in karst environments.
Weiwei Jiang +5 more
doaj +2 more sources
Abstract End‐ischemic viability testing by normothermic machine perfusion (NMP) represents an effective strategy to recover liver grafts having initially been discarded for liver transplantation (LT). However, its results in the setting of significant (≥30%) macrovesicular steatosis (MaS) have not been specifically assessed.
Damiano Patrono +8 more
wiley +1 more source
Introduction of breeding samples of meadow clover according to economically valuable characteristics using modern breeding methods [PDF]
The paper presents the results of research on the formation of complex hybrid populations, an assessment of the collection samples of clover on a complex of economically valuable traits for the creation of forage varieties.
Gasiev V.I., Lushchenko G.V.
doaj +1 more source
VERTICAL MINERAL ZONALITY OF THE SAN FERNANDO VOLCANOGENIC MASSIVE SULPHIDE DEPOSIT, CUBA
From ten to fifteen percent of the global supply of copper, zinc and lead, as well as a significant amount of silver, gold, cadmium, selenium, tin, bismuth and barium are mined from massive sulphide deposits.
D. De La Nuez Colon
doaj +1 more source
A zoogeographical analysis of the vertical structure of the North Tian-Shanian butterfly fauna (Lepidoptera: Rhopalocera) and the questions of the faunagenesis in Central Asia [PDF]
A zoogeographical analysis performed for vertical structures of the butterfly fauna of North TianShan. The arealogical structure of this fauna includes 46 types of areals, grouped in 3 complexes (226 species).
S.K. Korb
doaj +1 more source
The gynoecium comparative morphology of some representatives of Ornithogaloideae (Hyacinthaceae)
The gynoecium micromorphology of Dipcadi brevifolium (Dipcadieae, Ornithogaloideae), Ornithogalum fimbriatum, Ornithogalum dubium, Ornithogalum orthophyllum subsp. kochii (Ornithogaleae, Ornithogaloideae) was studied. Three main parts of the ovary of the
O .O. Dyka
doaj +1 more source
Soil bioavailable micronutrients have a significant impact on soil fertility, soil quality, maize production, and even environmental quality. However, minimal research has been conducted to characterize the spatial patterns of soil bioavailable ...
Hongfen Zhu +3 more
doaj +1 more source
In ten Sansevieria and two Dracaena species the vertical zonality of the gynoecium after W. Leinfellner (1950), as well as the structure of the septal nectary after the concept of its vertical zonality were studied. It was revealed four vertical zones in
Odintsova A., Fishchuk O.
core +2 more sources
The article presents data obtained by studying the influence of vertical zonality on changes in ecological niches of aphids and discussing in this regard the problems of ecological niches of ...
Alizhon Khusanov
core +1 more source

