M. Ilangkumaran Articles | Environmental XPRT

A1(M) Structure Drainage

Welwyn still requiring improvement to be brought up to motorway standard was the section between Rocstock and Stanborough. The aim here was to find an acceptable solution to a difficult problem, which would overcome the conflicting demands of highway, environment and local needs. The scheme chosen included, on environmental grounds, a 1150 metre long tunnel and in so doing created a ...

Jan. 24, 2000

By Terram - a Berry Plastics Company

Air Sentry Breathers - M series

M-Series breathers are designed from heavy-duty materials capable of handling the requirements of the most severe environments. They replace the standard breather cap or vent tube on fuel tanks and fluid reservoirs. Pipe threads on the bottom standpipe make the units easy to install in moments. All M-Series designs have 2 micron pleated filters and silica gel bags that are ...

Mar. 17, 2017

By Enluse B.V.

Project - M/Y Belle Aimee

The M/Y Belle Aimée is a 52m (171 ft) luxury motor yacht that charters in French Polynesia. Built in 2010 by prestigious Dutch builder Amels, the Belle Aimée acquired its VideoRay Pro 4 as part of an interior and AV upgrade in 2013. Equipped with an HD camera, fiber optic tether, and manipulator arm, the Pro 4 is part of the Belle Aimée’s state-of-the-art dive center ...

Jul. 15, 2020

By VideoRay LLC

Micro Pulse LiDAR: A Critical Tool for Emissions Source Detection

Micro Pulse LiDAR remote sensing data are used to calculate a highly accurate Planetary Boundary Layer (PBL) height to improve plume models that help assess emissions sources. Poor air quality is a growing health issue that has a negative impact on the quality of life for millions of people. To help alleviate this serious problem, scientists at Bubbleology Research International (BRI) have ...

Mar. 22, 2019

By Micro Pulse LiDAR, part of Hexagon

Impact of hydraulic loading rate and media type on removal of bulk organic matter and nitrogen from primary effluent in a laboratory-scale soil aquifer treatment system

The effect of hydraulic loading rate (HLR) and media type on the removal of bulk organic matter and nitrogen from primary effluent during soil aquifer treatment was investigated by conducting laboratory-scale soil column studies. Two soil columns packed with silica sand were operated at HLRs of 0.625 and 1.25 m/d, while a third column was packed with dune filtering material and operated at HLR ...

Jul. 4, 2013

By IWA Publishing

Soil erosion impact on soil organic carbon spatial variability on steep tropical slopes

The main objectives of this study were to evaluate soil organic C (SOC) variability in a representative hillslope of Laos and to quantify the impact of some environmental factors. We collected 2348 soil samples from 581 georeferenced soil pits within a hillslope of northern Laos under traditional shifting cultivation at 0- to 0.05-m depth and then every 0.1 m to 0.35-m depth. The SOC stocks at 0- ...

Mar. 11, 2009

By Soil Science Society of America (SSSA)

Patterns of plant species richness along the drawdown zone of the Three Gorges Reservoir 5 years after submergence

This study was conducted to understand the patterns of plant species richness in the Three Gorges Reservoir after 5 years after 175 m submergence. We hypothesized that hygrophyte and xerophyte species would show different species richness patterns, which was tested by collecting species composition and environmental variable data in 50 m long and 5 m wide transects in the drawdown zone from ...

Feb. 27, 2017

By IWA Publishing

The cytotoxic and genotoxic effects of metalaxy‐M on earthworms (Eisenia fetida)

As the main optical isomer of metalaxyl, metalaxyl‐M has been widely used worldwide in recent years due to its notable effect on the prevention and control of crop‐diseases. Together with the toxicity and degradation of metalaxyl‐M, the chemical has attracted the attention of researchers. The present study examined the toxic effects of metalaxyl‐M on earthworms at 0, 0.1, 1 and 3 mg kg−1 on ...

Jul. 15, 2014

By John Wiley & Sons, Ltd.

Molecular characterisation of clinical and environmental isolates of Mycobacterium kansasii isolates from South African gold mines

Mycobacterium kansasii (M. kansasii) is a major cause of non-tuberculous mycobacterial pulmonary disease in the South African gold-mining workforce, but the source of infection and molecular epidemiology are unknown. This study investigated the presence of M. kansasii in gold and coal mine and associated hostel water supplies and compared the genetic diversity of clinical and environmental ...

Feb. 27, 2015

By IWA Publishing

Floodplain hydraulics in a glaciated bedrock river valley

Data and one dimensional, unsteady theory document the average, seasonal, and diurnal hydraulics of an unconfined aquifer in the surficial floodplain deposit of the Neponset River, which flows through a glaciated bedrock valley in eastern Massachusetts. The 20 m thick silty sand deposit has a permeability of 1.4 × 10−11 m2, a porosity of 0.37, a 600 m halfwidth, and an ...

Oct. 5, 2012

By IWA Publishing

Canarina DISPER Software · air dispersion · algorithms 1

Software · air dispersion · algorithms 1 Symbol / Definition A = Linear decay term for vertical dispersion in Schulman-Scire downwash (dimensionless) Ae= Effective area for open pit emissions (dimensionless) D = Exponential decay term for Gaussian plume equation (dimensionless) DB= Brownian diffusivity (cm/s) Dr= Relative pit depth (dimensionless) de= Effective pit ...

Nov. 9, 2011

By Canarina Environmental Software

Goodyear Streamlines Inbound MSDS Management: Advances Employee Safety; Reduces Costs

Established in 1898, The Goodyear Tire and Rubber Company is one the world’s largest producer of tires, hoses, belts and chemical and synthetic rubber. The company, which is headquartered in Akron, Ohio, has more than 80 manufacturing facilities in 28 countries. In addition to manufacturing, the company has more than 2,000 retail outlets allowing for global market penetration. As an industry ...

Feb. 12, 2007

By UL - The WERCS

Wastewater treatment plants for `Lindstrom` laundry in Logatec, Slovenia case study

Designing, production, installation, start-up and adjustment works of WWTP (flotation unit "Flotas", accumulation tank 50 m³, sludge tank 45 m³) for Lindstrom laundry in Logatec, Slovenia. Maximum flow rate per day is 210 m³/day and optimal flow rate per hour is 14 ...

Nov. 12, 2013

By UAB Traidenis

Blast-Induced Liquefaction of an Alluvial Sand Deposit

A series of six different explosive charges ranging from 0.0045 to 9.06 kg were detonated at a depth of 3 m below a sand island in the South Platte River, northeast Colorado. Pore pressure, particle velocity, and residual pore pressure were measured at several locations. Liquefaction was induced in the dense, saturated, coarse sand at a depth of 3.0 m when peak compressive strain exceeded 0.01%, ...

Mar. 1, 1992

By ASTM International

Canarina DISPER Software · air pollution · algorithms 2

Software · air pollution · algorithms 2 Symbol / Definition Ly= Initial plume length for Schulman-Scire downwash sources with enhanced lateral plume spread (m) Lb= Lesser of the building height and crosswind projected building width (m) _= Alongwind length of open pit source (m) P(x,y)= Profile adjustment factor (dimensionless) p= Wind speed power law profile exponent ...

Nov. 10, 2011

By Canarina Environmental Software

Trending strategies for PV O&M - White Paper

EPCs and developers placing more emphasis on operational assets in the wake of damaging cuts to FiT schemes, non-O&M companies developing new business lines to services the O&M markets, and the secondary market of new owners keen to achieve optimum performance, are driving a competitive O&M market. Energy output has never been more essential: “If you do energy trading and you ...

Jul. 27, 2015

By New Energy Update

Airborne endotoxin concentrations at a large open-lot dairy in Southern Idaho

Endotoxins are derived from gram-negative bacteria and are a potential respiratory health risk for animals and humans. To determine the potential for endotoxin transport from a large open-lot dairy, total airborne endotoxin concentrations were determined at an upwind location (background) and five downwind locations on three separate days. The downwind locations were situated at of the edge of ...

Dec. 5, 2008

By Soil Science Society of America (SSSA)

Rotating belt sieves for primary treatment, chemically enhanced primary treatment and secondary solids separation

Fine mesh rotating belt sieves (RBS) offer a very compact solution for removal of particles from wastewater. This paper shows examples from pilot-scale testing of primary treatment, chemically enhanced primary treatment (CEPT) and secondary solids separation of biofilm solids from moving bed biofilm reactors (MBBRs). Primary treatment using a 350 microns belt showed more than 40% removal of ...

Mar. 6, 2017

By IWA Publishing

Characterisation of ambient benzene, toluene, ethylbenzene and m-, p- and o-xylene in an urban traffic area in Bangkok, Thailand

Ambient Volatile Organic Compounds (VOCs) were examined in a heavy traffic urban area in Bangkok, Thailand, on focusing monoaromatic compounds of benzene, toluene, ethylbenzene, m-, p- and o-xylene (BTEX). Passive samplers were used to measure ambient BTEX concentrations in the environment close to very congested roads. Prior to the measurement, the validity of passive sampler performance was ...

Dec. 9, 2008

By Inderscience Publishers

Ceramic Membrane Machine Lab & Pilot

The membrane area of CMP pilot machine has the following types: 0.1 m², 0.2 m², 0.5 m², 1 m², 2 m², 3 m², 4.5 m², 5 m², 6 m², 6.5 m², 8 m², 9 m² FEATURES OF CMP PILOT MACHINE Due to higher membrane velocity, reduce the accumulation of pollutants in the membrane surface, increase membrane flux. Good chemical stability, strong acid, ...

Aug. 11, 2019

By Jiangsu Jiuwu Hi-tech Co

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