EHS for Construction Sites Articles
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Effect of low concentration 17β‐estradiol on the emissions of CH4 and CO2 in anaerobic sediments
17β‐estradiol (E2) is one of the most widely distributed natural estrogens. It is the most potent estrogen in the environment. E2 and methanogenic bacteria communities were chosen as the study objects to analyze the impacts of E2 on the production of methane and carbon dioxide. Microecological systems in anaerobic pore water were constructed in laboratory. Our results show that E2 played an ...
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Engineering exploration
Resistivity method uses in engineering usually involve mapping void for construction safety purpose. One survey ZZ did was to use crosshole resistivity method to verify the size and location of two karasts. Due to site limitation, only 32 and 20 electrodes were used. The inversion image found two low resistivity areas next to the borehole, which resemble the void. Latter drilling conferred with ...
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Void and cave detection case study
Case 3 A crosshole resistivity survey to find karst caves for deep foundation construction This survey is aimed to find voids for construction safety purpose, as figure below shows, 32 and 20 electrodes were placed into two boreholes respectively. Inversion image found low resistivity areas beside boreholes were likely to be karst caves. Later site investigation concurred with the ...
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Water supply structures of the Ottoman period in Istanbul (Asian side)
The city of Istanbul has land on both the Asian and European continents. On the European side, many waterways (culverts) were constructed to supply water to the old city; however, on the Asian (Anatolian) side, such water supply structures were limited in number and capacity. Therefore in order to meet the water demand of this side of the city, foundation waterways were built. This study ...
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Multi–physical field information comprehensive analysis and application of tunnel water–bearing structure
Water inrush and burst mud cause great hidden danger and economic loss, so it gradually became an important technical problem for tunnel construction. The prediction principle of seismic wave method, electromagnetic wave method, and electrical method were analysed. The merits and demerits of the three methods in the prediction of tunnel water–bearing structure were compared. The superiority of ...
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Decarbonated development of tourist attractions based on system dynamics
Transforming the development way of tourism industry from the extensive mode to intensive one towards low–carbon economy is coming in the context of a variety of global environmental problems. For tourist attractions, how to advocate and achieve decarbonated development based on system engineering is a new subject deserving to be discussed. This paper proposes system dynamics model of scenic area ...
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Are constructed treatment wetlands sustainable sanitation solutions?
The main objective of sanitation systems is to protect and promote human health by providing a clean environment and breaking the cycle of disease. In order to be sustainable, a sanitation system has to be not only economically viable, socially acceptable and technically and institutionally appropriate, but it should also protect the environment and the natural resources. ...
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Why Does You Need to Invest in Carpet Upholstery Cleaners?
Carpeted surfaces in high-traffic areas, such as restaurants and retail stores, tend to accumulate dust and dirt rather fast. In houses with small children, the carpeted areas in front of the TV are usually the dirtiest with bits of food, snacks, beverage spills, crayon marks, and ink spills. Very often, the upholstered furniture in these environments will also be subject to rough use and thus ...
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Make Sure Mobile Car Detailing Equipment Should be Easily Portable
You should never make the mistake of purchasing non-portable equipment, if you have a mobile car detailing business. Mobile car detailing requires traveling to client location for car washing. For mobile car detailing, you need equipment that are durable, light weight, and easy to carry on a trailer. Many contractors are required to travel long distances to the client location in order to ...
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Trust and Hospitality in the Chicorral Community, Ixtahuacán, Sololá, Guatemala
For those who have all the basic services, it may be hard to conceive of the extreme poverty faced by the indigenous K'iche communities. My first experience in the Bio-rights initiative was to visit Chicorral, the most remote and difficult to access community, and smallest with only 20 families. In the rainy season it takes over an hour of difficult walking, depending on the physical obstacles ...
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Spill Containment, Industrial & Environmental Solutions
ULTRA-EVER DRY is a superhydrophobic (water) and oleophobic (hydrocarbons) coating that will completely repel almost any liquid. Ultratech EverDry uses proprietary nanotechnology to coat an object and create a barrier of air on its surface. This barrier repels water, oil and other liquids unlike any coating seen before. Technical Information: MSDS | FAQ’s | Instructions Ultra-Ever Dry is ...
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Hydrological investigations and water resources management for wildlife sanctuary in central India
The important hydrological issues in Nauradehi Wildlife Sanctuary (NWLS) are development of water resources, development of flora and fauna, trouble–free water availability for wildlife and retention of soil moisture for maximum forest growth. In the present study, the surface and groundwater resources of the sanctuary were estimated using water balance method. The results show that the sanctuary ...
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Sustainable tall buildings: toward a comprehensive design approach
This paper presents a comprehensive design approach to sustainable tall buildings development. It argues that the true efficiency and success of tall buildings are heightened by their overall relationship with their urban setting and infrastructure. Tall and supertall buildings are mini–cities and their social, economic, and environmental impacts extend throughout the neighbourhood and the ...
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Case study: URS - Identifying remediation locations saved hundreds of thousands
One of the biggest threats to public health today is unsafe water. A billion people across the world don’t have access to clean drinking water, in part because many subsurface aquifers have been poisoned. Perhaps the most famous example of this was the Love Canal crisis of 1978. The Niagara Falls neighborhood experienced high rates of cancer, birth defects and other sicknesses due to ...
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Manifesto for a resource-efficient Europe
In a world with growing pressures on resources and the environment, the EU has no choice but to go for the transition to a resource-efficient and ultimately regenerative circular economy. Our future jobs and competitiveness, as a major importer of resources, are dependent on our ability to get more added value, and achieve overall decoupling, through a systemic change in the use and recovery of ...
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Essential Tips For Construction Equipment Cleaning
Construction equipment cleaning is one of the most underestimated jobs in the construction industry. Cleaning of the construction equipment does not receive the due attention it deserves. Successful construction companies, though, ensure that construction equipment are cleaned thoroughly and professionally. The managers of these companies know that efficient and long lasting machines are ...
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Unsealed tubewells lead to increased fecal contamination of drinking water
Bangladesh is underlain by shallow aquifers in which millions of drinking water wells are emplaced without annular seals. Fecal contamination has been widely detected in private tubewells. To evaluate the impact of well construction on microbial water quality 35 private tubewells (11 with intact cement platforms, 19 without) and 17 monitoring wells (11 with the annulus sealed with cement, six ...
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Cost and time overrun analysis for green construction projects
Green construction projects are initiated in complex and dynamic environments resulting in circumstances of high level of uncertainty with respect to cost and duration. This is attributed to the fact that construction of green buildings requires stricter norms in terms of environmental conservation, carbon emission, construction footprint, pollution, etc. which can cause an addition to 'cost and ...
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Safe water, household income and health challenges in Ugandan homes that harvest rainwater
Having access to a safe water supply is important to improve a person's quality of life. We examine the relationship between the influence of water availability on monthly household expenditures (the dependent variable) and independent variables such as household characteristics, tank size, usage instructions and post-construction guidance, including the management of water-related ...
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SISAR: a sustainable management model for small rural decentralized water and wastewater systems in developing countries
Investments for basic rural sanitation programs should not only focus on the construction of new installations, but also on the necessity of implementing proper management models that guarantee the operational and financial sustainability of the investments. The integrated rural sanitation system (SISAR) is based on the idea of creating a confederation of local user groups which come together ...
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