Governance Practices of Dust in Feeder of Coal Handling System on Mine's Ground

2012 ◽  
Vol 524-527 ◽  
pp. 906-909
Author(s):  
Shao Cheng Ge ◽  
Tong Yang ◽  
De Ji Jing
Keyword(s):  
Inner Mongolia ◽  
Coal Dust ◽  
Climatic Conditions ◽  
Dust Pollution ◽  
Mining Company ◽  
Site Specific ◽  
Handling System ◽  
Effective Governance ◽  
Governance Practices ◽  
Underground Passage

It concerns about issues of dust pollution of three feeder which in the underground passage under the storage warehouse of Inner Mongolia Datang International Xilinhaotes Mining Company Limited.By inspections and investigations in the field,according to site-specific circumstances and local climatic conditions,we had implemented comprehensive renovation project of coal dust of feeder in underground passage,and achieved remarkable and effective governance results.

scholarly journals Effect of Climatic Factors on Stem Biomass and Carbon Stock of Larix gmelinii and Betula platyphylla in Daxing’anling Mountain of Inner Mongolia, China

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Dilawar Khan ◽  
Muhammad Atif Muneer ◽  
Zaib-Un- Nisa ◽  
Sher Shah ◽  
Muhammad Amir ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Negative Impact ◽  
Climatic Factors ◽  
High Temperature Stress ◽  
Climatic Conditions ◽  
Larix Gmelinii ◽  
Maximum Temperature ◽  
Betula Platyphylla ◽  
Stem Biomass ◽  
Annual Minimum Temperature

Climate change has become a global concern for scientists as it is affecting almost every ecosystem. Larix gmelinii and Betula platyphylla are native and dominant forest species in the Daxing’anling Mountains of Inner Mongolia, playing a major role in carbon sequestration of this region. This study was carried out to assess the effect of climate variables including precipitation and temperature on the biomass of Larix gmelinii and Betula platyphylla forests. For this purpose, we used the climate-sensitive stem biomass allometric model for both species separately to find out accurate stem biomass along with climatic factors from 1950 to 2016. A total of 66 random plots were taken to attain the data from this study area. Larix gmelinii and Betula platyphylla stem biomass have a strong correlation with annual precipitation (R2 = 0.86, R2 = 0.71, R2 = 0.79, and R2 = 0.59) and maximum temperature (R2 = 0.76, R2 = 0.64, R2 = 0.67, and R2 = 0.52). However, annual minimum temperature (R2 = 0.58, R2 = 0.43, R2 = 0.55, and R2 = 0.46) and annual mean temperature (R2 = 0.40, R2 = 0.22, R2 = 0.36, and R2 = 0.19) have a relatively negative impact on tree biomass. Therefore, we suggest that both species have a very strong adaptive nature with climatic variation and hence can survive under drought and high-temperature stress climatic conditions.

Sustainable water resources management in the Long Bien district of Hanoi, Vietnam

2012 ◽  
Vol 12 (6) ◽  
pp. 737-746 ◽  
Author(s):  
C. Stefan ◽  
T. Fröhlich ◽  
L. Fuchs ◽  
R. Junghanns ◽  
H. M. Phan ◽  
...  
Keyword(s):  
Artificial Recharge ◽  
Positive Impact ◽  
Groundwater Resources ◽  
Climatic Conditions ◽  
Site Specific ◽  
Resources Management ◽  
Groundwater Levels ◽  
Sustainable Water Resources Management ◽  
High Population Growth ◽  
Local Water

The accelerated industrialization of Hanoi, Vietnam, coupled with a high population growth rate and changing climatic conditions create increasing pressure on the local water balance. Despite abundant precipitations, overexploitation endangers the groundwater resources, which are not able to sustain an adequate water supply. The present paper presents a sustainable approach for balancing the lowering of groundwater levels by increasing the rainwater percolation rates through enhanced infiltration. The efficiency of the method was assessed by a scenario analysis based on hydrological and hydrogeological models. Multi-criteria simulations revealed the optimum infiltration sites by considering technical and site-specific aspects and the positive impact of artificial recharge on seasonal groundwater budget.

CEO overpayment and underpayment: executives, governance and institutions

2018 ◽  
Vol 16 (1) ◽  
pp. 38-46
Author(s):  
Michael Hitt ◽  
Katalin Takacs Haynes
Keyword(s):  
Design Methodology ◽  
Organizational Context ◽  
Future Research ◽  
Hiring Decisions ◽  
Content Type ◽  
Compensation Plans ◽  
Effective Governance ◽  
Inadequate Information ◽  
Governance Practices ◽  
The Board Of Directors

Purpose Based on the findings of Aguinis et al. (2018) that only a few executives are properly compensated, the purpose of this paper is to examine potential causes and consequences of CEO overpayment and underpayment. Ineffective compensation of the CEO represents a governance failure by the board of directors. Better understanding the reasons for such failures may help boards to correct their processes and to enact more effective governance. Boards must look beyond the normally constrained focus of agency theory to examine executive characteristics and motivation. Thus, tailoring compensation plans and governance to the executive and organizational context requires attention to a broader set of theoretical notions. Design/methodology/approach Using the Aguinis et al. (2018) work, this paper conceptually identifies and explains the causes and consequences of CEO overpayment and underpayment along with their implications for governance and future research. Findings This paper identifies potential reasons for CEO overpayment and underpayment. For example, in addition to poor hiring decisions and inadequately designed compensation plans, CEO overpayment can occur because of executive hubris and greed. Alternatively, CEO underpayment may occur because of a poorly designed plan, inadequate information about the external labor market and the executive’s interests in non-pecuniary benefits (e.g. socio-emotional wealth, altruism). Without proper monitoring and oversight by the board, firm performance commonly suffers. Originality/value This work extends our understanding of why CEOs may be overpaid (e.g. hubris, greed) and why some executives may accept underpayment (e.g. desire for non-pecuniary benefits from SEW or altruism). This paper explains the consequences of ineffective corporate governance practices that allow inefficient CEO compensation. Finally, this paper explores several contingencies that can affect the governance practices and research needed to enhance our knowledge of this important area.

The Application of Particle Motion Equation in Coal Handling System of Dissipation Dust Law

2013 ◽  
Vol 313-314 ◽  
pp. 702-705
Author(s):  
Shao Cheng Ge ◽  
Yao Xuan Feng ◽  
De Ji Jing
Keyword(s):  
Numerical Simulation ◽  
Field Test ◽  
Particle Motion ◽  
Theoretical Basis ◽  
Coal Dust ◽  
Motion Equation ◽  
Dust Concentration ◽  
Dust Particles ◽  
Space Application ◽  
Handling System

For getting the effectiveof application in dissipation dust law with particle motion equation atcoal handling system of belt machine tail, must be to proceed related numerical simulation in the way of dust particles motion incoal handling system of belt machine tail and dust concentration of diffusion inoperation space. Application particlemotion equation theory for numerical simulation to coal dustparticles, obtained dust coal dissipation law in coal handling system, at thesame time combine with the data of the field test of dust concentration andfallout dispersion for analyzing and comparing. The results of comparison showthat: the data of numerical simulation with particle motion equationin coal dust dissipation law is coincide with reality dissipation law. Accordingto the conclusion of this research, it is provides theoretical basis forprevention and treatment in coal mine of coal handling system of dustdissipation.

scholarly journals Intra-annual patterns of tracheid size in the Mediterranean tree Juniperus thurifera as an indicator of seasonal water stress

2011 ◽  
Vol 41 (6) ◽  
pp. 1280-1294 ◽  
Author(s):  
Lucía DeSoto ◽  
Marcelino De la Cruz ◽  
Patrick Fonti
Keyword(s):  
Water Stress ◽  
Cell Size ◽  
Climatic Conditions ◽  
Juniperus Thurifera ◽  
Site Specific ◽  
Anatomical Features ◽  
The Mediterranean ◽  
Climatic Information ◽  
Extract Information ◽  
Annual Patterns

Because climate can affect xylem cell anatomy, series of intra-annual cell anatomical features have the potential to retrospectively supply seasonal climatic information. In this study, we explored the ability to extract information about water stress conditions from tracheid features of the Mediterranean conifer Juniperus thurifera L. Tracheidograms of four climatic years from two drought-sensitive sites in Spain were compared to evaluate whether it is possible to link intra-annual cell size patterns to seasonal climatic conditions. Results indicated site-specific anatomical adjustment such as smaller and thicker tracheids at the dryer site but also showed a strong climatic imprint on the intra-annual pattern of tracheid size. Site differences in cell size reflected expected structural adjustments against cavitation failures. Differences between intra-annual patterns, however, indicated a response to seasonal changes in water availability whereby cells formed under drought conditions were smaller and thicker, and vice versa. This relationship was more manifest and stable at the dryer site.

scholarly journals NUMERICAL SIMULATION OF DUST POLLUTION OF WORKING PLACE NEAR COAL DUMP

2021 ◽  
Vol 1 (4(68)) ◽  
pp. 40-45
Author(s):  
M. Biliaiev ◽  
V. Biliaieva ◽  
O. Berlov ◽  
V. Kozachyna
Keyword(s):  
Stokes Equations ◽  
Coal Dust ◽  
Computer Code ◽  
Navier Stokes ◽  
Finite Difference Schemes ◽  
Cfd Model ◽  
Surface Wetting ◽  
Dust Pollution ◽  
Mass Transfer Equation ◽  
Navier Stokes Equations

The problem of estimating the level of air pollution in the working areas near the coal pile is considered. The task is to develop a CFD model that allows to predict the level of air dust pollution, taking into account the process of wetting the surface of the coal pile. To model the process of coal dust transfer in the air, a twodimensional mass transfer equation is used, which takes into account coal dust transfer due to convection and diffusion. The Navier-Stokes equations are used to calculate the air flow field near the coal pile. Finite-difference schemes of splitting are used for numerical integration of modeling equations. Computer code is developed on the basis of created CFD model. The developed code can be used to analyze the effectiveness of the coal surface wetting to reduce dust pollution of work areas near coal piles. The results of a computational experiment are presented.

scholarly journals Research on Active Dustproof of Coal Handling System

2021 ◽  
Author(s):  
Man Yi Zhou
Keyword(s):  
Power Plant ◽  
Thermal Power Plant ◽  
Coal Dust ◽  
Thermal Power ◽  
Site Investigation ◽  
Point Of View ◽  
Dust Control ◽  
Gradual Improvement ◽  
Handling System ◽  
National Environmental

Abstract Coal handling system of Power plant(CHP) is easy to produce dust, which is the most serious place of coal dust pollution in thermal power plant. With the gradual improvement of national environmental protection requirements, the control of coal dust becomes more and more important. The author believes that we should not wait for the pollution caused by coal dust to be treated, but should take the initiative to attack, and should take the initiative to prevent dust, starting from the source of coal transportation. In the process of designing coal conveying of thermal power plant for many years, the author has carried out on-site investigation on many coal handling systems, summarized experience and obtained relevant data. Through further analysis, the main causes of coal dust are mastered, and the relevant measures of active dust control are put forward from the technical point of view, in order to provide help for the comprehensive control of coal dust in power industry.

Fluvial activity in major river basins of the eastern United States during the Holocene

The Holocene ◽  
2020 ◽  
Vol 30 (9) ◽  
pp. 1279-1295
Author(s):  
Ray Lombardi ◽  
Lisa Davis ◽  
Gary E Stinchcomb ◽  
Samuel E Munoz ◽  
Lance Stewart ◽  
...  
Keyword(s):  
United States ◽  
Large Scale ◽  
Gulf Coast ◽  
Human Impacts ◽  
Climatic Conditions ◽  
Ice Age ◽  
Cyclic Behavior ◽  
Eastern United States ◽  
Site Specific ◽  
The Holocene

In the eastern United States, existing paleo-reconstructions in fluvial environments consist primarily of site-specific investigations of climate and human impacts on riverine processes. This paper presents the first meta-analysis of fluvial reconstructions focused on regional watersheds of the eastern United States, including the Lower Mississippi, Tennessee, South Atlantic–Gulf Coast, Ohio, Mid-Atlantic, and New England regional watersheds. Chronologies of fluvial activity (i.e. alluvial deposition) and stability (i.e. landscape stability) were developed by synthesizing data from existing, published, and site-specific fluvial reconstruction studies conducted across the eastern United States. Overall, regional watersheds show variable patterns of synchronicity across watersheds and did not demonstrate cyclic behavior through the Holocene. During the last millennium, only the Lower Mississippi and Ohio regional watersheds exhibit high rates of fluvial activity active during the ‘Medieval Climate Anomaly’ (650–1050 yr BP), while nearly all other regional watersheds in the eastern United States were active during the ‘Little Ice Age’ (100–500 yr BP). These findings imply that fluvial activity may be more spatially restricted during warmer/drier climatic conditions than during cooler/wetter periods. We find an increase in fluvial activity during the era of Euro-American colonization (400 yr BP to present) in the southeastern United States but not the northeastern United States, implying a heterogeneous response of fluvial systems to human activities in the eastern United States related to climatic, cultural, and/or physiographic variability. These new insights gained from fluvial chronologies in the eastern United States demonstrate the utility of regionally synthesized paleo-records to understand large-scale climate variation effect on rivers.

Estimation of Site-specific Crop Coefficients for Major Crops of Lalgudi Block in Tamil Nadu using Remote Sensing based Algorithms

2021 ◽  
Vol 58 (1) ◽  
pp. 62-72
Author(s):  
J Ramachandran ◽  
R Lalitha ◽  
S. Vallal Kannan
Keyword(s):  
Remote Sensing ◽  
Tamil Nadu ◽  
Crop Productivity ◽  
Irrigation Scheduling ◽  
Climatic Conditions ◽  
Growth Stages ◽  
Crop Canopy ◽  
Site Specific ◽  
Local Climate ◽  
Crop Coefficients

Crop coefficient (Kc ) is an important parameter in estimating the crop water requirements during different crop growth stages. The Kc values for a particular crop are highly site and region-specific and need to be precisely determined for each agro-climatic region for better irrigation scheduling and improved water and crop productivity. The site-specific crop coefficients for paddy, sugarcane, and banana cultivated in Lalgudi block, Tiruchirapalli District, Tamil Nadu, India, were estimated using two remote sensing-based methods viz. NDVI-Kc linear regression technique and SEBAL actual evapotranspiration to reference evapotranspiration ratio approach (SEBAL-Kc ). The Kc values obtained by remote sensing methods were compared with FAO-56 Adjusted Kc (ClimAdj-Kc ) for local climatic conditions and FAO-56 tabulated reference Kc values (FAOTab-Kc ). Regression analysis revealed a good agreement between NDVI-Kc and ClimAdj-Kc for paddy (R2 =0.95), banana (R2 =0.93), and sugarcane (R2 =0.79). Compared to FAO56-Kc, the derived Kc values using NDVI-Kc were higher, while the SEBAL-Kc values were lower for all growth stages of paddy. For sugarcane crops, the FAO-56 Kc, NDVI-Kc, and ClimAdj-Kc for local climate were almost similar in all stages. In the case of bananas, NDVI-Kc and SEBAL-Kc were higher as compared to the FAO-56-Kc and ClimAdj-Kc. SEBAL approach performs well as it accounted for local climatic conditions and crop canopy changes, whereas NDVI considered only crop canopy. However, the SEBAL method is computationally intensive as compared to the NDVI-Kc method. The Kc values estimated in this study can be important in quantifying the crop evapotranspiration at regional and field scales, leading to better decision-making in irrigation scheduling.

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