induced polarization Articles

  • Case Study - Mapping Gold Deposits with Induced Polarization Surveys, Yukon, Canada

    Site:  Rockhaven Resources Ltd. Klaza property in Yukon Territory, Canada Equipment:  SuperStingR8 with AGI 84 electrode passive electrical imaging cable, 5 meter electrode spacing, inverse schlumberger array, boost mode(200W output), Direct Samples:  Reverse circulation drilling and geochemical analysis of core samples. Results:  SuperStingR8 induced ...


    By Advanced Geosciences, Inc.

  • Combined and interactive effects of global climate change and toxicants on populations and communities

    Increased temperature and other environmental effects of global climate change (GCC) have documented impacts on many species (e.g., polar bears, amphibians, coral reefs) as well as on ecosystem processes and species interactions (e.g., the timing of predator–prey interactions). A challenge for ecotoxicologists is to predict how joint effects of climatic stress and toxicants measured at the ...


    By John Wiley & Sons, Ltd.

  • Climate change has a big impact on low-diversity ecosystems

    New research suggests that climate change-induced species decline, in low-diversity ecosystems, could be more detrimental to ecosystem functioning than species decline in temperate regions, where diversity levels are high. Low-diversity ecosystems, such as deserts, cover large areas of Earth’s surface, however, few biodiversity studies have examined the impacts of climate change in these areas. ...

  • Determination of oil and grease in water with a mid-infrared spectrometer

    The concentration of dispersed oil and grease (OG) is an important parameter for water quality and safety. OG in water can cause surface films and shoreline deposits leading to environmental degradation, and can induce human health risks when discharged in surface or ground waters. Additionally, OG may interfere with aerobic and anaerobic biological processes and lead to decreased wastewater ...


    By PerkinElmer, Inc.

  • Structural aspects of transition-metal nanoparticles in imidazolium ionic liquids

    Imidazolium-based ionic liquids (ILs) display a pronounced self-organisation in the solid, liquid and even in the gas phase. These pre-organised structures are formed mainly through hydrogen bonds between the cations and anions that induce structural directionality. This structural organisation of ILs can be used as 'entropic drivers' for spontaneous, well-defined, and extended ordering of ...


    By Inderscience Publishers

  • Managing multimedia pollution for a multimedia world

    Due to climate-change-induced melting of essential sea ice habitat and a lack of effective regulatory mechanisms to mitigate further losses, the U.S. Fish and Wildlife Service is now considering the polar bear for listing as a threatened species. If we could place ourselves for a moment in one potential future of the polar bear, similarly stranded in the Arctic Ocean on the last tenuous piece of ...

  • Extraterrestrial hydrogeology

    Subsurface water processes are common for planetary bodies in the solar system and are highly probable for exoplanets (planets outside the solar system). For many solar system objects, the subsurface water exists as ice. For Earth and Mars, subsurface saturated zones have occurred throughout their planetary histories. Earth is mostly clement with the recharge of most groundwater reservoirs from ...


    By Springer

  • Electrokinetic Separation

    Introduction The principle of electrokinetic remediation relies upon application of a low-intensity direct current through the soil between ceramic electrodes that are divided into a cathode array and an anode array. This mobilizes charged species, causing ions and water to move toward the electrodes. Metal ions, ammonium ions, and positively charged organic compounds move toward the cathode. ...

  • The crucial role of the pls1 tetraspanin during ascospore germination in podospora anserina provides an example of the convergent evolution of morphogenetic processes in fungal plant pathogens and saprobes{triangledown}

    Pls1 tetraspanins were shown for some pathogenic fungi to be essential for appressorium-mediated penetration into their host plants. We show here that Podospora anserina, a saprobic fungus lacking appressorium, contains PaPls1, a gene orthologous to known PLS1 genes. Inactivation of PaPls1 demonstrates that this gene is specifically required for the germination of ascospores in P. anserina. ...

  • IP resistivity

    This is a collection of various cases where the 2D resistivity imaging method pioneered by Advanced Geosciences Inc have been successfully applied. Click on a section below and you will be shown a full 2D resistivity imaging ...


    By Advanced Geosciences, Inc.

  • White paper - RaMPS technology explained

    1. Introduction RaMPS, which stands for Resistivity Mono-pole Profiling and Sounding, is a unique and proprietary geophysical survey and exploratory methodology developed by Willowstick Technologies by combining traditional resistivity sounding and profiling techniques into an integrated surveying method. It is not only unique in the way the data is acquired, but unique in the way the ...


    By Willowstick Technologies LLC

  • Terrestrial sequestration

    Trees play a key role in the environment's natural landscape due to their ability to prevent erosion. The Spanish Government says it will plant 45 million trees over the next four years to counter desertification caused by global warming. The massive tree–planting scheme aims to reduce the amount of carbon dioxide (CO2) in the atmosphere, the cause of global warming. It estimates that in the long ...


    By Erosion Control Forum

  • ITRC technology overview of passive sampling technologies

    This document presents technical overviews of 12 passive sampling technologies. It describes each technology’s basis of operation, intended applications, advantages, limitations, and development status. Contacts for additional information are provided. This overview is an outgrowth of interest and information generated in preparation of the ITRC Technical and Regulatory Guidance for Using ...


    By EON Products Inc.

  • Influence of Operating Conditions on Fouling Behavior in Wastewater Membrane Bioreactor Process

    ABSTRACTMembrane fouling was studied using three pilot-scale submerged membrane bioreactors operated at a series of permeation and aeration conditions to treat municipal wastewater. The transmembrane pressure increases were used to calculate the fouling ratios to compare the relative fouling rates. The results showed that the trends of fouling resistances differed greatly, depending on the ...

  • Living within Earth`s “Planetary Boundaries”

    Borneo’s lowland rainforests are one of the most biodiverse regions on earth, home to unique habitats, thousands of species of plants, and animals like Proboscis monkeys, Sumatran rhinoceroses, and orangutans. Yet more than 75 percent of its forests have been destroyed in recent decades. “Now it looks like something out of Lord of the Rings, due to hardwood harvesting and huge palm ...

  • A Discussion on Ozone Chemistry

    MEMBRANE AND APPLICATION DEVELOPMENT 1.0 INTRODUCTION The ability of ozone to effectively treat wastewater is dependent on the nature of contaminant in question. For example, ozone will readily remove color from a dye solution, but has much more difficulty reducing the biochemical oxygen demand (BOD) of a sucrose stream. These differences in ozone effectiveness are ...

  • Climate Change Driving Weather off the Charts

    Meteorologists are calling the typhoon that slammed into the Philippines with 195-mile-an-hour winds on November 8, 2013, the most powerful tropical storm to make landfall on record. Super Typhoon Haiyan had gusts reaching 235 miles per hour and a storm surge swelling as high as 20 feet, so the destruction it left behind matched that of a tornado combined with a tsunami. Three days later, at the ...


    By Earth Policy Institute

  • 5 Tips for Handling Climate Skeptics in 2013

    While the New Year brings with it a sense of optimism, for those of us in the climate change business it means another year competing against any schnook with money and a billboard to address the American people (see the Heartland Institute). When it comes to the climate debate, ...


    By Climate Counts

  • USLC columns put the right tools in your LC method development toolbox

    Understanding Selectivity in Reversed Phase Separations – A Simplified Approach to HPLC and UHPLC Column Selection The most significant influence on chromatographic peak separation, or resolution, is column selectivity. Unfortunately, column selectivity is also the least understood and most underutilized parameter. To improve selectivity, method developers often concentrate on ...


    By Restek Corporation

  • 5 Growing Extreme Weather Threats to America’s Cities

    Weather events have been dominating the news recently thanks to the “polar vortex” that caused record cold temperatures across the nation. But just a few months ago, the news was filled with other events: record rain and flooding in Colorado; destructive tornadoes in Oklahoma; widespread drought in the Southwest; and the sluggish recovery from Superstorm Sandy in New Jersey. Unlike ...


    By GLOBE Foundation

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