Environmental Impacts of Lead Ore Mining and Smelting

2014 ◽  
Vol 878 ◽  
pp. 338-347 ◽  
Author(s):  
Narendra Singh ◽  
Jin Hui Li
Keyword(s):  
Health Effects ◽  
Anthropogenic Lead ◽  
Particulate Matter Emissions ◽  
Correct Determination ◽  
Lead Metal ◽  
Lead Levels ◽  
The Impact ◽  
Mining And Smelting ◽  
Lead Mining

Present day lead pollution is an environmental hazard of global proportions. A correct determination of natural lead levels is very important in order to evaluate anthropogenic lead contributions. In this paper, the impact of mining and smelting of lead metal ores on environmental quality is described. Globally mines produce large amounts of waste because the ore is only a small fraction of the total volume of the mined material. In the metal industry, production of lead, causes the greatest degradation of the environment. Lead smelters release large quantities of Cd and Pb into the environment as well as smelting and refining produce gaseous (CO2, SO2, NOx, etc.) and particulate matter emissions, sewage waters, and solid wastes; however, these pollutants take a lead to effects human health. A quantitative evaluation of the environmental health effects of lead mining and smelting is difficult because of the complexity of factors involved and lack of consistent methodology. Nevertheless, the investigation indicates that negative health effects could arise from lead mining and smelting.

scholarly journals Impact of the Winding Angle of the Auger Blade on the Loading Process With Milling Auger Drums

2020 ◽  
Vol 3 (1) ◽  
pp. 241-250
Author(s):  
Tomasz Wydro
Keyword(s):  
Milling Process ◽  
Design Parameters ◽  
Mining Machine ◽  
Loading Process ◽  
Auxiliary Process ◽  
Correct Determination ◽  
The Individual ◽  
The Impact ◽  
Winding Angle

AbstractThis publication addresses the impact of selected design parameters of milling auger cutting drums on the loading process, and above all the winding angle of the auger blade. The loading process is often referred to as an auxiliary process because the milling process is considered to be the dominant throughout the work of the cutting drum. The correct determination of the relationship between the mining process and the loading process allows to understand how the individual design and kinematic parameters of the mining drums and the mining machine on which they are installed affect each other. The publication discusses the problem of loading with milling cutting drums and ways to increase its efficiency. The research results of the loading process have been presented, affecting the efficiency of this process in the aspect of various angles of inclination of the auger blades. Based on the tests, conclusions have been formulated that allow for the possible selection of an appropriate winding angle for the auger blade, depending on the granulation of spoil.

scholarly journals Town-planning value of territory as the basis of the evaluation of zoning when conducting cadastral valuation of real estate

2019 ◽  
Vol 110 ◽  
pp. 02121
Author(s):  
Anna Osennyaya ◽  
Bella Khakhuk ◽  
Yuliya Sokolova ◽  
Nafset Husht
Keyword(s):  
Real Estate ◽  
Urban Policy ◽  
Negative Impact ◽  
Sustainable Growth ◽  
Town Planning ◽  
Scientific Methods ◽  
Economic Relations ◽  
Correct Determination ◽  
The Impact

In modern Russian conditions, the correct determination of cadastral value is one of the most important tasks that stimulate the functioning, sustainable growth and development of the country’s economy. Science-based mechanism of cadastral valuation will contribute to the building of stable economic relations between the state and society. Unjustified changes in cadastral value may have a negative impact on the budget of the municipality and the interests of the owners. In this connection, the determination of cadastral value on the basis of science-based methods and approaches is a priority; allowing revealing the potential and reserves of settlements, to carry out urban policy aimed at increasing the urban value of the territories. The available methodological basis does not fully explain the essence of price zoning, a number of significant factors of urban value of the territory, such as infrastructure and existing buildings, and, as a consequence, their impact on the algorithm for determining the cadastral value are missed. The use of General scientific methods, theoretical, economic and statistical analysis and modeling allowed clarifying the methodology of cadastral evaluation, taking into account the impact of zoning and urban value of the territories on the result of cadastral evaluation. The proposed model for calculating the urban value of the territory is based on the computer program developed by the authors, the use of which allows scientifically correct cadastral value of the estimated real estate and will contribute to a socially fair and “transparent” mechanism of taxation of real estate.

scholarly journals AN ALTERNATIVE APPROACH TO REDUCING AGING OF INNOVATIVE INDUSTRIAL PRODUCTS IN TERMS OF INDUSTRY 4.0

2021 ◽  
Vol 3 ◽  
pp. 274-280
Author(s):  
Desislava Petrova
Keyword(s):  
Production Systems ◽  
Rapid Progress ◽  
Information Communication ◽  
Industrial Products ◽  
Distinctive Features ◽  
Technological Structure ◽  
Alternative Approach ◽  
Correct Determination ◽  
The Impact

The rapid progress in the field of industrial and information-communication techno-logies and their impact on production systems are putting increasing pressure on the engineering structure. That is why modern technological deve-lopment has created conditions in which innova-tive obsolescence already takes precedence over physical. A particularly important point in this direction is the correct determination of the degree of influence of innovative aging on products and processes in order to establish its impact on the technical, economic and social results of industrial activity. In addition, the impact of this process is globalizing, resulting in innovative obsolescence of technology and lagging behind the level of advan-ced technologies from modern ones world-wide. The further use of innovatively obsolete equipment and technological processes leads to certain losses, the amount of which will depend on the degree of this lag. This report proposes an alternative approach to reducing the innovative obsolescence of industrial products by modernizing and creating sustainability in the engineering space. At the same time, innovative progress in the future will put increasing pressure on the technological structure and on the distinctive features of this process. A theoretical attempt has been made to calculate mathematically innovative aging, and the impact of destructive innovations is difficult to capture with this model.

Assessment of sensitivity of the efficiency of regional tax spending towards investment attractiveness of the types of economic activity carried out by the residents of advanced development territory

2020 ◽  
pp. 98-110
Author(s):  
Evgeniya Mikhailovna Popova ◽  
Guzel Mukhtarovna Guseinova ◽  
Sergei Borisovich Milov
Keyword(s):  
Economic Activity ◽  
Socioeconomic Development ◽  
Federal District ◽  
Tax Incentives ◽  
Capital Investments ◽  
The Subject ◽  
Investment Process ◽  
The Impact ◽  
Advanced Development

The deficit of subnational budgets and deceleration capital investments in multiple Russian regions increase the relevance of research aimed at improvement of tax incentivizing practice of the regional investment process. The studies focused on determination of the impact of socioeconomic and institutional factors upon the efficiency of investment tax expenses obtained wide circulation within the foreign scientific literature. The subject of this article is the assessment of sensitivity of the efficiency of regional tax expanses towards investment attractiveness of the types of economic activity carried out by the residents of territories of advanced socioeconomic development, created in the subjects of Far Easter Federal District. The scientific novelty and practical values of this research consists in substantiation of the reasonableness of assessment of investment attractiveness of the types of economic activity that are stimulated by tax incentives. Methodology for assessing investment attractiveness is proposed and tested. The conclusion is made that in case of low investment attractiveness of the type of economic activity, which was planned to support by tax incentives, it is required to conduct and additional analysis to avoid unjustified tax expanses.

Method development for the determination of textural properties of sugar beet roots

2019 ◽  
pp. 392-400 ◽  
Author(s):  
Gunnar Kleuker ◽  
Christa M. Hoffmann
Keyword(s):  
Sugar Beet ◽  
Compression Test ◽  
Storage Period ◽  
Textural Properties ◽  
Small Sample ◽  
Root Tip ◽  
Flexural Test ◽  
Sample Distribution ◽  
The Impact

The harvest of sugar beet leads to root tip breakage and surface damage through mechanical impacts, which increase storage losses. For the determination of textural properties of sugar beet roots with a texture analyzer a reliable method description is missing. This study aimed to evaluate the impact of washing, soil tare, storage period from washing until measurement, sample distribution and number of roots on puncture and compression measurements. For this purpose, in 2017 comprehensive tests were conducted with sugar beet roots grown in a greenhouse. In a second step these tests were carried out with different Beta varieties from a field trial, and in addition, a flexural test was included. Results show that the storage period after washing and the sample distribution had an influence on the puncture and compression strength. It is suggested to wash the roots by hand before the measurement and to determine the strength no later than 48 h after washing. For reliable and comparable results a radial distribution of measurement points around the widest circumference of the root is recommended for the puncture test. The sample position of the compression test had an influence on the compressive strength and therefore, needs to be clearly defined. For the puncture and the compression test it was possible to achieve stable results with a small sample size, but with increasing heterogeneity of the plant stand a higher number of roots is required. The flexural test showed a high variability and is, therefore, not recommended for the analysis of sugar beet textural properties.

Determination of Lead in Soils Surrounding a Lead-Acid Battery Manufacturer

1995 ◽  
Vol 30 (2) ◽  
pp. 299-304 ◽  
Author(s):  
Cameron D. Skinner ◽  
Eric D. Salin
Keyword(s):  
Lead Concentration ◽  
Depth Range ◽  
Lead Acid Battery ◽  
Soil Lead ◽  
Lead Levels ◽  
Factory Site ◽  
Lead Acid

Abstract Soil lead levels were determined on and around a former battery manufacturing site. Lead concentrations ranging from 120 ppm to 5.1’ were found. The highest concentrations were found close to the factory site. When it was possible to obtain samples over a continuous depth range, it was found that lead concentration decreased with depth and that it increased above underground foundations.

Development and Validation of an LC-MS/MS Method for Simultaneous Determination of Canagliflozin and Metformin HCl in Rat Plasma and its Application

2020 ◽  
Vol 16 (6) ◽  
pp. 752-762
Author(s):  
Vivek Nalawade ◽  
Vaibhav A. Dixit ◽  
Amisha Vora ◽  
Himashu Zade
Keyword(s):  
Internal Standard ◽  
Rat Plasma ◽  
Precipitation Method ◽  
Herbal Extracts ◽  
One Step ◽  
Precision And Accuracy ◽  
Development And Validation ◽  
The Impact ◽  
Metformin Hcl

Background: Food and herbal extracts rich in Quercetin (QRT) are often self-medicated by diabetics and can potentially alter the pharmacokinetics (PK) of Metformin HCl (MET) and Canagliflozin (CNG) leading to food or herb-drug interactions and reduced therapeutic efficacy. However, the impact of these flavonoids on the pharmacokinetic behaviour of MET and CNG is mostly unknown. Methods: A simple one-step protein precipitation method was developed for the determination of MET and CNG from rat plasma. The mobile phase chosen was MeOH 65% and 35% water containing 0.1% formic acid at a flow rate of 1mL/min. Results: The retention time of MET, internal standard (Valsartan) and CNG was 1.83, 6.2 and 8.2 min, respectively. The method was found to be linear in the range of 200 - 8000 ng/mL for CNG and 100 = 4000 ng/ml for MET. Precision and accuracy of the method were below 20% at LLOQ and below 15% for LQC, MQC, and HQC. Conclusion: The method was successfully applied for the determination of PK of MET and CNG by using 100 μL of rat plasma. QRT co-administration affects the PK parameters of MET and CNG. This alteration in PK parameters might be of significant use for clinicians and patients.

The Microeconomics of Product Innovation

2018 ◽  
Author(s):  
Paul Stoneman ◽  
Eleonora Bartoloni ◽  
Maurizio Baussola
Keyword(s):  
Product Innovation ◽  
New Products ◽  
Goods And Services ◽  
Product Innovations ◽  
Microeconomic Analysis ◽  
Prime Objective ◽  
Price Measurement ◽  
The Impact

The prime objective of this book is the use microeconomic analysis to guide and provide insight into the generation and adoption of new products. Taking an approach that uses minimal formal mathematics, the volume initially addresses questions of definitions, sources, and extent of product innovation, differentiating between goods and services; hard and soft innovations; horizontal and vertical innovations; original, new to market, and new to firm innovations. The sources of product innovations (e.g. R&D, design, and creativity) are explored empirically, and the extent of such innovations is then pursued using survey and other data. Three chapters are devoted to the theoretical analysis of the demand for and supply of new products and to the determination of firms’ decisions to undertake product innovation. Later chapters encompass empirical evidence on the determination of the extent of product innovation, the diffusion of such innovation, the impact of product innovation on firm performance, price measurement, and welfare, while the final chapter addresses policy issues.

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