Dynamic soil

Xem 1-20 trên 21 kết quả Dynamic soil
  • Soil is a biogeochemically dynamic natural resource that supports all critical components that comprise terrestrial ecosystems. It has been called Earth’s living skin. On its June 11, 2004, cover, Science declared soils to be “the final frontier.” The growing awareness that soil provides a variety of ecosystem services beyond food production has attracted interest in soil from nonsoil scientists.

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  • Water chemistry and mineral solubility, soil minerals and surface chemical properties, electrochemistry and kinetics, soil dynamics and agriculturai, organic chemicals,... As the main contents of the teex book "Environmental Soil and Water Chemistry". Invite you to consult.

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  • The utility of primer pairs in SCoTs was advocated by Gorji et al. (2011). SCoT markers are generally reproducible, and it is suggested that primer length and annealing temperature are not the sole factors determining reproducibility (Gorji et al., 2011). They are dominant markers, however, while a number of co-dominant markers are also generated during amplification, and thus they could be used for genetic diversity analysis (Collard & Mackill, 2009b). This has been validated through study of genetic diversity among rice varieties (Collard & Mackill, 2009b).

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  • This book is idented for three groups: students and professors of structural and ocean engineering, engineers and scientists in academic institutions, goverment laboratories, and inductries involved in research on offshore installations , espetically fluid structure soil interaction, and practicing professional engineers who considers conceptual design and need to employ dynamic analysis to evaluate facilities contructed offshore

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  • Tham khảo sách 'seismic waves, research and analysis_1', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Soil loss for erosion is a natural phenomenon in soil dynamics, influenced by climate, soil intrinsic properties, and morphology, that can both trigger and enhance the process. Anthropic activities, like inappropriate agricultural practices, deforestation, overgrazing, forest fires and construction activities, may exert a remarkable impact on erosion processes or, on the other hand, contribute to soil erosion mitigation through a sustainable management of natural resources.

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  • Large herbivores are, and have for a long time been, among the major drivers for forming the shape and function of terrestrial ecosystems. These animals may modify primary production, nutrient cycles, soil properties, fire regimes as well as other biota. Some large herbivore species/populations are at the edge of extinction and great effort is being made to save them. Other species/populations are under discussion for reintroduction. Still other species occur in dense populations and cause conflicts with other land use interests.

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  • The second cluster of chapters focuses on factors that facilitate the adoption or nonadoption of agroforestry systems. The authors of the last three chapters argue that increasing the scale of adoption and the impact of agroforestry innovations requires actions that are based on an understanding of the dynamics of adoption and the critical factors that determine whether farmers accept, do not accept, or partially accept, innovations. Place et al.

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  • We propose a new design for highly concurrent Internet services, which we call the staged event-driven architecture (SEDA). SEDA is intended to support massive concurrency demands and simplify the construction of well-conditioned services. In SEDA, applications consist of a network of event-driven stages connected by explicit queues. This architecture allows services to be well-conditioned to load, preventing resources from being overcommitted when demand exceeds service capacity.

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  • Our methodology is based on a dynamic stochastic general equilibrium (DSGE) calibrated model augmented with endogenous market structures in line with recent developments in the macroeconomic literature (see Etro, 2009, for a survey). This model is perturbed with a realistic structural change to the cost structure, with the purpose to study the short and long term reactions of the economy. Therefore, our methodology is based on a solid theoretical framework and provides results that can be easily replicated by economists. However, it has some limitations that we need to point out.

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  • Traditional estimates that often find minimum wage disemployment effects include controls for state unemployment rates and state- and year-fixed effects. Using CPS data on teens for the period 1990–2009, we show that such estimates fail to account for heterogeneous employment patterns that are correlated with selectivity among states with minimum wages. As a result, the estimates are often biased and not robust to the source of identifying variation.

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  • Permanent grass cover crop is a technique used in the vineyards of Villa Bel-Air. As a result, the grass absorbs the water and the nutrients from the top layer of the soil, and forces the vine roots to go deeper and deeper to find nourishment. Throughout the year, de-budding, leaf-thinning and crop thinning are performed by the technical team. All of these manual operations ensure the perfect health and maturity of each bunch. The harvested grapes are then transferred onto a modern sorting table to remove all remaining vegetal matter.

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  • Like job flows, the net jobs from continuing firms (firms that existed before and survived the period of analysis) overwhelm new and closing firms’ employment impact. Quarterly data from the Bureau of Labor Statistics’ Business Employment Dynamics (BED) show that continuing establishments accounted for 69 percent of the net new jobs from 1993 to mid-2008, and the other 31 percent reflected net new jobs from establishment births minus those lost in deaths (Figure 3).

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  • Stakeholder and biodiversity at the local level is a three-year collaboration between the Center for International Forestry Research (CIFOR) and the Swiss Development Cooperation (SDC). Tropenbos International-Vietnam (TBI-V) has been a very helpful collaborator for coordinating the project activities. The project goal is to contribute to the enhancement of the livelihoods of local forest dependent communities and sustainable forest management.

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  • Wetlands are the ecotonal or transitional zones between terrestrial and aquatic ecosystems where the water table is usually at or near the surface of the land, which is covered by the shallow water (Mitsch & Gosselink, 1986). Due to these characteristics, wetlands provide opportunities for adaptations to different plant and animal species with high diversity of life-forms. Thus wetlands are among the most biologically diverse and productive ecosystems on earth.

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  • Low-frequency acoustic energy released within the Earth's crust and mantle mostly propagates - depending on the density and elasticity of the medium - through several types of seismic waves categorized as body waves (longitudinal P and transverse S) or surface waves (long L and ground roll R). The importance of seismic wave research lies not only in our ability to understand and predict earthquakes and tsunamis, it also reveals information on the Earth's composition and features in much the same way as it led to the discovery of Mohorovicic's discontinuity....

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  • A further look at soil remineralization and its tremendous positive potentials will be of value here. Due to long-time general neglect of the need for balanced remineralization, these potentials are scarcely known, both by practitioners of the widespread “soil mining” chemical agriculture, and by the “organic,” “bio-dynamic,” and “eco-agriculture” practitioners.

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  • The scope of the series covers the entire spectrum of solid mechanics. Thus it includes the foundation of mechanics; variational formulations; computational mechanics; statics, kinematics and dynamics of rigid and elastic bodies; vibrations of solids and structures; dynamical systems and chaos; the theories of elasticity, plasticity and viscoelasticity; composite materials; rods, beams, shells and membranes; structural control and stability; soils, rocks and geomechanics; fracture; tribology; experimental mechanics; biomechanics and machine design.

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  • Seismic Design Practice in Japan 44.1 44.2 44.3 44.

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  • Chapter 8 Woody Detritus Mass and its Contribution to Carbon Dynamics of Old-Growth Forests: the Temporal Context Mark E. Harmon Woody detritus is an important component of forested ecosystems. It can reduce erosion and affects soil development, stores nutrients and water

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