Harvey J. Clewell III Articles | Environmental XPRT

Protecting the environment with help from CCOHS

Winnipeg, MB.: Environment Canada’s mandate is to preserve and enhance the quality of the natural environment, including water, air and soil quality. Its vision is to see a Canada where responsible decisions about the environment are made for the benefit of present and future generations. Harvey Pukin is Technical Advisor for Health and Safety for the Meteorological Service of Canada, ...

Nov. 2, 2007

By Canadian Centre for Occupational Health and Safety (CCOHS)

Intraspecific Genetic Diversity of Undaria pinnatifida in Japan, based on the Mitochondrial cox3 Gene and the ITS1 of nrDNA

The intraspecific genetic diversity of the kelp Undaria pinnatifida (Harvey) Suringar (Laminariales, Phaeophyceae) was investigated using DNA sequences of the mitochondrial cytochrome oxidase subunit 3 (cox3) gene and internal transcribed spacer 1 (ITS1) of nuclear ribosomal DNA in plants collected from 21 localities along the Japanese coast between 2001 and 2003. Morphological variation was also ...

Jan. 1, 2006

By Springer-Verlag GmbH

OTT HydroMet sensors for measuring water level in creeks and bayous, played a critical role during Hurricane Harvey

Hurricane Harvey, and the subsequent flooding, was an unprecedented and devastating event in eastern Texas. Harvey produced an average of 33.7 inches of rainfall over the 1,777 square miles of Harris County over a 4 day period which equates to 1 trillion gallons of water and is also 68% of the yearly annual rainfall. Of the 22 watersheds across Harris County, 13 established new record water ...

Sep. 26, 2017

By OTT HydroMet

YMCA, Columbus, Ohio - Case Study

Project Name: YMCA Product: Grasspave2 permeable fire lane Application: Fire Lane City: Columbus State/Province: Ohio Install Date: November 2005 Install Size: 240 m2 (2600 sq ft) Address: 900 Harvey CT, Columbus, OH Client: YMCA Improvement Designer: NA Contractor: The Nadalin Company, Inc. Directions: 900 Harvey Ct, Columbus, OH Location: North and west sides of building. ...

Jan. 26, 2011

By Invisible Structures, Inc.

Critical valve partial stroke testing using SVM

In this article, Richard Harvey (Rotork Fluid Systems) explains the increasing scope for critical duty valve testing provided by innovative partial stroke ...

Jul. 1, 2009

By Rotork plc

Groundwater Flow in Arsenic-Contaminated Aquifer, Mekong Delta, Cambodia

ABSTRACT To advance understanding of hydrologies I influences on As concentrations within groundwaters of Southeast Asia, the flow system of an As-rich aquifer on the Mekong Delta in Cambodia where flow patterns have not been disturbed by irrigation well pumping was examined. Monitoring of water levels in a network of installed wells, extending over a 50knr area, indicates that groundwater flow ...

Jan. 1, 2008

By In-Situ, Inc.

MJB&A Evaluates opportunities for natural gas in the marine sector case study

On behalf of the American Clean Skies Foundation, MJB&A prepared a comprehensive assessment of the opportunities for natural gas to power U.S. marine vessels, including tugs, barges, ferries, and Great Lakes bulk carriers. Most marine vessels today operate on liquid petroleum fuel – either marine distillate or marine residual oil. Worldwide there are fewer than 50 vessels in-service or ...

Oct. 31, 2013

By M.J. Bradley & Associates LLC

Prevalence and genetic diversity of bartonella species isolated from wild rodents in Japan

Here, we describe for the first time the prevalence and genetic properties of Bartonella organisms in wild rodents in Japan. We captured 685 wild rodents throughout Japan (in 12 prefectures) and successfully isolated Bartonella organisms from 176 of the 685 rodents (isolation rate, 25.7%). Those Bartonella isolates were all obtained from the rodents captured in suburban areas (rate, 51.8%), but ...

Aug. 1, 2008

By American Society for Microbiology (ASM)

Inspection Manual: Federal Equipment Leak Regulations for the Chemical Manufacturing Industry

Untitled Document Abstract The purpose of this manual is to enhance an inspector's ability to conduct more complete and effective inspections at facilities in the chemical industry that are subject to Federal equipment leak regulations. Equipment leak standards are designed to reduce or eliminate emissions of volatile organic compounds (VOCs), volatile hazardous air pollutants ...

Jan. 1, 1998

By US EPA - Environmental Protection Agency

Hurricanes Harvey and Irma highlight need for regulating developments

There’s a lingering image of the American Frontier where a calm breeze blows through endless prairies of tall grass, and “the skies are not cloudy all day.” As the prairies become more populated, they get paved over to make way for roads and westward expansion. The tall grass that once ran 14 feet deep is replaced with impermeable asphalt, and the calm quiet is replaced with ...

Sep. 30, 2017

By Hamilton Kent

The world`s largest stormwater alum treatment facility - in Florida

Stormwater in the Florida canal system is slow moving. The green, murky water in the lakes fed by the Apopka-Beauclair canal is caused by an overabundance of algae-feeding compounds, mainly phosphorus, resulting in chronic algal blooms. The Nutrient Reduction Facility (NuRF) project designed a system to inject aluminum sulface (alum) into the nutrient-laden water in direct proportion to the ...

Aug. 9, 2013

By SRS Crisafulli, Inc.

Removal of trace As(V) from aqueous solution by Fe(III)-loaded porous amidoximated polyacrylonitrile

A Fe(III)-loaded chelating resin named Fe(III) AO PAN was prepared by immobilizing Fe(III) onto porous amidoximated polyacrylonitrile (AO PAN) obtained by modification of hydroxylamine with polyacrylonitrile (PAN), which was synthesized by suspended emulsion polymerization. The structures of PAN, AO PAN, and Fe(III)-AO PAN were characterized by infrared spectrometry and scanning electron ...

May 18, 2016

By IWA Publishing

Funding a Job Guarantee

Adopting a conventional view of the need for governments to raise the funds they spend, I have argued that a well-designed Job Guarantee (JG) programme could be funded entirely from the savings and additional revenues it would generate (Harvey, 1989; 1995). In contrast, JG advocates working in the Post Keynesian tradition have grounded their proposal for funding such a programme on a more ...

Mar. 30, 2006

By Inderscience Publishers

Adsorptive removal of As(III) from aqueous solution by waste litchi pericarps

The present study investigated the removal of arsenite anions (AsO33−, referred to as As(III)) from aqueous solutions by waste litchi pericarps (LPs). Influential factors such as the adsorbent dose, contact time, solution pH, and initial As(III) concentration were investigated. The optimum conditions for As(III) adsorption by the LPs occurred at a contact time of 60 min, adsorbent dose of ...

Aug. 13, 2016

By IWA Publishing

Degradation of bisphenol A in water by Fe(III)/UVA and Fe(III)/polycarboxylate/UVA photocatalysis

The photodegradation of the endocrine disrupting chemical Bisphenol A (BPA) under UVA irradiation in the presence of Fe(III) or Fe(III)-polycarboxylate systems was studied. The effect of Fe(III) concentration, aqueous pH and the presence of four carboxylic acids (oxalic, malic, tartaric and citric) were investigated. The Fe(III)/UVA system was able to effectively degrade BPA at pH 3 but failed at ...

Aug. 1, 2010

By IWA Publishing

Effects of Fe(III) on biofilm and its extracellular polymeric substances (EPS) in fixed bed biofilm reactors

The effects of Fe(III) on the biofilm mass and activity, the biofilm micromorphology as well as the composition and functional groups characteristics of extracellular polymeric substances (EPS) in biofilm were investigated in laboratory-scale fixed bed biofilm reactors. The results showed that 2 mg/L of Fe(III) promoted the biofilm mass and improved the biofilm activity, but 16 mg/L of ...

Feb. 1, 2016

By IWA Publishing

Supported liquid membrane system for Cr(III) separation from Cr(III)/Cr(VI) mixtures

This paper presents the results of analyses of the chromium(III) transport process from mixtures of Cr(III)/Cr(VI) ions using supported liquid membranes (SLM), in which dinonylnaphthalene sulfonic acid (DNNSA) and di(2-ethylhexyl) phosphoric acid (D2EHPA) were used as carriers. In both cases the membrane worked as a selective barrier for Cr(VI) ions. The increase in both the time of Cr(VI) ...

Jun. 25, 2014

By IWA Publishing

Sampling compressed gas with the Lasair III particle counter

Abstract This document provides technical information and recommended methods for sampling compressed gas using the Lasair® III Particle Counter in combination with the High Pressure Diffuser III (HPD ...

May 18, 2019

By Particle Measuring Systems

Breakthrough studies with mono-, binary- and ternary-ion systems comprised of Fe(II), F<sup>−</sup> and As(III) using river sand packed columns for groundwater treatment

Breakthrough studies with mono-, binary- and ternary-ion systems comprised of Fe(II), F⁻ and As(III) using river sand packed columns for groundwater treatment

Groundwater in Assam, India, contains excessive amounts of arsenic (As(III)), fluoride (F−) and iron (Fe(II)). The rural and semi-urban population of Assam uses indigenous iron filters fabricated using processed sand (PS) as one of the chief constituents to reduce Fe(II) concentration; however, no efforts have been made to reduce As(III) or F− concentrations before use. The ...

May 24, 2013

By IWA Publishing

Removal of chromium(III) from water samples by a low-cost sorbent: application to a mixture of chromium(III) and chromium(VI)

Adsorption of Cr(III) and Cr(VI) ions from aqueous solutions and water samples has been investigated using Powdered Marble Waste (PMW). The effect of solution pH, initial metal concentration, sorbent dose, shaking time, temperature, and foreign ions on the adsorption of Cr(III) was studied. It was found that the sorption capacity increased with the increase of Cr(III) concentration and ...

Feb. 11, 2010

By Inderscience Publishers

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