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The elements
\"A spectacular visual guide to the more than 100 elements that make up you and everything around you\"--P. [4] of cover.
Book
Exploring the mysteries of the elements
Every element is featured, their vital statistics given, their main compounds and uses explored, and their fascinating histories told.
Book
Nitrogen, phosphorus, and potassium fertilization to achieve expected yield and improve yield components of mung bean
Mung bean (Vigna radiata L.) is an important edible bean in the human diet worldwide. However, its growth, development, and yield may be restricted or limited by insufficient or unbalanced nitrogen (N), phosphorus (P), and potassium (K) fertilization. Despite this, there are few long-term studies of the effects of varying levels of N, P, and K combined fertilizers and the optimal fertilization for improving mung bean yield and quality. This study was conducted to optimize the fertilization strategies for high yield and to improve yield components (pods per plant, seeds per pod, and 100-seed weight) in the Bailv9 mung bean cultivar, 23 treatments were tested in 2013-2015, using a three-factor (N, P, and K fertilizers), five-level quadratic orthogonal rotation combination design. Our studies showed that, the N, P, and K fertilizers significantly influenced the pods per plant and yield, which increased and then decreased with the increasing N, P, and K fertilizers. The 100-seed weight was significantly affected by the N and P fertilization, and it was increased consistently with the increasing N fertilizer, and decreased significantly with the increasing P fertilizer. Whereas, the seeds per pod significantly decreased with the increasing N and K fertilizers, and the P fertilizer had no significant effect on it. The NP interaction had a significant effect on yield and pods per plant at high N levels, while the NK interaction had a significant but opposite effect on yield at low N levels. The optimal fertilization conditions to obtain yield >2,141.69 kg ha-1 were 34.38-42.62 kg ha-1 N, 17.55-21.70 kg ha-1 P2O5, and 53.23-67.29 kg ha-1 K2O. Moreover, the optimal N, P, and K fertilization interval to achieve pods per plant > 23.41 and the optimal N fertilization to achieve a 100-seed weight > 6.58 g intersected with the interval for yield, but the seeds per pod did not. The fertilizer ratio for the maximum yield was N:P2O5:K2O = 1:0.5:1.59. Following three years experimentation, the optimal fertilization measures were validated in 2016-2017, the results indicated that yield increased by 19.6% than that obtained using conventional fertilization. The results of this study provide a theoretical basis and technical guidance for high-yield mung bean cultivation using the optimal fertilization measures.
Journal Article
The elements : a visual exploration of every known atom in the universe
The elements are what we - and everything around us - are made of. But how many elements have you seen in their pure, raw, uncombined form? This book presents photographic representations of the 118 elements in the period table, along with facts, figures and stories about each one.
Book
WHO handbook on indoor radon : a public health perspective
\"The WHO Handbook on Indoor Radon\" is a key product of the WHO International Radon Project, which was launched in 2005. The \"Handbook\" focuses on residential radon exposure from a public health point of view and provides detailed recommendations on reducing health risks from radon and sound policy options for preventing and mitigating radon exposure. The material in the \"Handbook\" reflects the epidemiological evidence that indoor radon exposure is responsible for a substantial number of lung cancers in the general population. The material is organized into six chapters, each introduced by key messages. Usually, technical terms are defined the first time they are used, and a glossary is also included. Information is provided on the selection of devices to measure radon levels and on procedures for the reliable measurement of these levels. Discussed also are control options for radon in new dwellings, radon reduction in existing dwellings as well as assessment of the costs and benefits of different radon prevention and remedial actions. Also covered are radon risk communication strategies and organization of national radon programs.This publication is intended for countries planning to develop their national radon programs or extend such activities, as well as for stakeholders involved in radon control such as the construction industry and building professionals.The overall goal of this \"Handbook\" is to provide an up-to-date overview of the major aspects of radon and health. It does not aim to replace existing radiation protection standards, rather it emphasizes issues relevant to the comprehensive planning, implementation and evaluation of national radon programs.
eBook
Elements
\"Elements create everything around us, from the air we breathe to our very bodies. Some elements are abundant, such as hydrogen and carbon, while others are rare or only created in laboratories! How elements join to create compounds--and the matter around us--is an amazing discovery that scientists are still investigating. Readers will appreciate the accessible look at elements in this intriguing book, which includes comprehensible fact boxes, helpful diagrams, and essential elementary chemistry facts.\"-- Provided by publisher.
Book
On the Possibility of Implementing CCS Projects in the Carbonate Reservoirs of the Siberian Platform
Relevance
: Carbon capture and storage technology involving geological storage of carbon dioxide in deep aquifers is widely used in the world as this technology is aimed at reducing the emission of greenhouse gases into the Earth’s atmosphere and minimizing the influence of these gases on global climate change.
Objective:
To carry out preliminary investigation of the features of water–rock–carbon-dioxide interactions in application to carbonate reservoirs, which are widespread in hydrogeological basins over the territory of the Russian Federation and are potentially suitable as carbon dioxide storage facilities. These processes are considered on the example of the ancient Siberian Platform, where industrial production of hydrocarbons is currently increasing and a series of large-scale projects in the area of petroleum and gas chemistry are underway.
Methods:
Mathematical physical and chemical modeling is applied to solve the problem. The calculations are implemented by the HydroGeo software package, in which the achievement of chemical equilibria for the “water–rock” system is implemented on the basis of the method of equilibrium constants.
Results:
The obtained results allow us to evaluate the directions of geochemical processes in the reservoirs under consideration and to provide qualitative estimation of changes in the pore space under the conditions of its saturation with carbon dioxide, with respect to different saturation degrees. It is established that solution acidification is observed as a result of its saturation with CO
2
, with the transition of chemical elements to the prevailing forms of complex ions bound with hydrocarbonate and chloride ions (Mn, Na, K). At the same time, saturation with carbon dioxide does not have such a substantial effect on the forms of Ca and Fe migration. Special attention is paid to Al, which is transformed almost completely from complex forms into Al
3+
in the presence of carbon dioxide. In the studied reference samples, rather intense transformation of the reservoir rocks with redistribution of elements between the primary and secondary mineral phases is observed (both rock dissolution and precipitation up to several hundred g/dm
3
) with comparatively small absolute changes in open porosity. In a number of the considered objects, the dissolution of calcite and dolomite proceeds due to a decrease in pH. The directions of the transformations, as well as the trend of changes in the filtration-capacity properties, are determined by the specific mineralogical combination of the reservoir rocks and the brine present in them, as well as by the stage of evolution of the system under consideration (the first part of the considered combinations is initially far from equilibrium and continues interacting, while the second part is close to equilibrium and is transformed into the non-equilibrium state due to saturation with carbon dioxide).
Journal Article