Results 51 to 60 of about 56,488 (276)

Displacement Estimation of Structures With Flag‐Shaped Hysteresis Loops

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Time‐history analyses were conducted on single‐degree‐of‐freedom (SDOF) systems with flag‐shaped hysteresis loops using a far‐field ground motion suite to estimate peak displacements, Δp, and equivalent deformation cycles, Nc, associated with cumulative displacement demands.
Yudi Zhang   +5 more
wiley   +1 more source

Government affiliation and innovation in emerging market firms: The role of international diversification

open access: yesGlobal Strategy Journal, EarlyView.
Abstract Research Summary This study examines how international diversification interacts with government affiliation to shape innovation outcomes in emerging market firms. We reconceptualize government affiliation as a resource‐structuring mechanism that varies across hierarchical levels and influences the coherence of firms' dominant logics of ...
Danielle R. Combs   +3 more
wiley   +1 more source

Subsoil compaction on agricultural land by heavy construction machinery : soil physical aspects

open access: yes, 2000
Heavy equipment used for the construction of long distance gas pipelines may cause severe and persistent subsoil compaction of arable land. In this project, the effects of compaction on the flow paths of water in the soil were studied. Water stained by a
Flühler, H.   +4 more
core   +2 more sources

The material composition of reservoir rocks of the pre-Jurassic formations of the Shaimsky oil and gas region

open access: yesИзвестия высших учебных заведений: Нефть и газ
The Shaim oil and gas bearing region is situated in the central part of the Pre-Ural oil and gas province in the southwest of the Khanty-Mansi Autonomous Okrug and covers the Sovetsky and Kondinsky administrative districts.
M. L. Moroz, G. A. Chernova
doaj   +1 more source

Root Exudates Induce Soil Macroaggregation Facilitated by Fungi in Subsoil

open access: yesFrontiers in Environmental Science, 2018
Subsoils are known to harbor large amounts of soil organic carbon (SOC) and may represent key global carbon (C) sinks given appropriate management. Although rhizodeposition is a major input pathway of organic matter to subsoils, little knowledge exists ...
Vera L. Baumert   +5 more
semanticscholar   +1 more source

Long‐Term Analysis of Winter Wheat Yield and Climatic Influences in Ukraine

open access: yesInternational Journal of Climatology, EarlyView.
Long‐term field data (1968–2024) show that winter wheat yields in central Ukraine increased despite warming, but yield stability declined. Rising temperatures, more frequent soil moisture droughts and shortened winter calm increasingly limit productivity.
Tetiana Grabovska   +4 more
wiley   +1 more source

Geochemical Characteristics of Naphthides From the Vendian-Lower Cambrian Carbonate Deposits of the Central Part of the Nepsko-Botuobinskaya Oil and Gas Bearing Area

open access: yesGeoresursy
The paper discusses the peculiarities of group, molecular and elemental compositions of bitumens and oils of Usolskaya and Teter Formations of three fields of the central part of Nepsko-Botuobinskaya oil and gas bearing area.
E. A. Vtorushina   +6 more
doaj   +1 more source

Funding of geological exploration during transformation of the Russian economic system

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2023
Background. The mineral resource base is a strategic component of Russia’s economic security, being a critically important tool for strengthening the country’s position in the international arena.
S. M. Salmanov   +2 more
doaj   +1 more source

Continental-scale patterns of extracellular enzyme activity in the subsoil: an overlooked reservoir of microbial activity

open access: yesEnvironmental Research Letters, 2020
Chemical stabilization of microbial-derived products such as extracellular enzymes (EE) onto mineral surfaces has gained attention as a possibly important mechanism leading to the persistence of soil organic carbon (SOC).
Nicholas C. Dove   +17 more
semanticscholar   +1 more source

Wheat Wild Relatives and Modern Cultivars Differ for Salt Resistance in Terms of Morpho‐Physiological Traits

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
Wheat wild relatives are untapped genetic resources from salinity and drought hit areas. This study presents differential comparative morphophysiological responses of these species and modern wheat cultivars under saline conditions. Salt resistant species produce more shoot and root biomass under saline conditions through salt exclusion and/or tissue ...
Muhammad Saqib, Riya Raj, Michael Frei
wiley   +1 more source

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