oceanographic research Articles
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Cape Cod Times article on McLane’s Global Footprint
The Cape Cod Times has published an article on McLane’s exports of its profilers, samplers, and flotation around the world. Recently, the Small Business Administration (SBA) had selected McLane Research Laboratories, Inc. as 2017 Exporter of the Year for the Commonwealth of Massachusetts. The article included a video of a McLane Moored Profiler descending our 50 ft test tank. Sean F. ...
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What are Core Samplers?
A core, in marine research, is a cylindrical section taken from sediments underlying a water body. Core samplers, the instruments used to obtain cores, range from the simple to the complex. The variety of corer types reflect the breadth and variety of marine research. For example, the simplest corers are hand-operated types used in shallow waters to collect sediment cores containing fauna. ...
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Climatic identity assessment of the climate change
In the last few decades, due to the potentially serious impacts upon the atmosphere, earth, and ocean the climate change issue become internationally disputable subject among many scientists including various specialists such as climatologists, atmospheric researchers, oceanographers, hydro–meteorologists, agriculturalists, in particular, local administrators in addition to politicians, as ...
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Gas Detection and Monitoring Systems
In greenhouse applications, the accurate measurement of a number of environmental parameters such as carbon dioxide concentration, temperature, light intensity, water, humidity, pH and nutrient levels using sophisticated sensors is used to create a controlled environment for optimising plant growth rates while minimising energy usage. Carbon dioxide concentration is also one of the best ...
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Exploring Stratified Density Gradients with Dr. Michael Burin
In a video interview with PME, Dr. Michael Burin from California State University, San Marcos explains how he used PME’s MSCTI PN probe in a laboratory experiment. The goal of the experiment was to study stratified density gradients in a controlled environment. Warmer water with a higher salt concentration was added to a tank of cooler water with a very low salt concentration. The resulting ...
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RainWise WindLOG is Key in Patagonia Research - Case Study
Gaspar Soria is a researcher for the Patagonian National Centre (CENPAT), a multidisciplinary scientific research center for the National Scientific and Technical Research Council of Argentina. Along with fellow researchers, Pedro Fiorda and Oscar Frumento, Gaspar is conducting field research in the marine protected area of Peninsula Valdes, Northern Patagonia, Argentina. Península ...
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RainWise WindLOG is Key in Patagonia Research - Case Study
Gaspar Soria is a researcher for the Patagonian National Centre (CENPAT), a multidisciplinary scientific research center for the National Scientific and Technical Research Council of Argentina. Along with fellow researchers, Pedro Fiorda and Oscar Frumento, Gaspar is conducting field research in the marine protected area of Peninsula Valdes, Northern Patagonia, Argentina. Península ...
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Visualization of Transparent Exopolymer Particles (TEP) in various source waters.
Transparent Exopolymer Particles (TEP) have been implicated as an important factor in the development of aquatic biofilm on membranes and other surfaces. We have recorded TEP and associated bacteria from four different kinds of source water (coastal seawater, freshwater lake, secondary treated wastewater and saline, high sulfide content groundwater from a deep well) as visualized by light and ...
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Transparent exopolymer particles: Potential agents for organic fouling and biofilm formation in desalination and water treatment plants
Transparent exopolymer particles (TEP) are ubiquitous in marine and freshwaters, and have been subject to intensive study by oceanographers and limnologists over the past 15 years. These microscopic organic particles (visualized by Alcian Blue staining for acid polysaccharides) may be considered a planktonic form of exopolymeric substances (EPS). Two aspects relating to the potential involvement ...
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Don`t fall foul of biofilm through high TEP levels
Biological fouling caused by the growth of biofilm on Reverse Osmosis (RO) and nanofiltration (NF) membranes can be amajor problem in desalination and water purification plants. Biofilm development lowers filtration efficiency and eventually the membranes must be replaced. Biofilm is usually made up of layers of assorted microbial populations, mostly bacteria,held together in a sticky matrix of ...
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Transparent exopolymer particles (TEP): A critical factor in aquatic biofilm initiation and fouling on filtration membranes
Transparent exopolymer particles (TEP) are sticky organic microgels, ubiquitous in natural waters, which have been implicated as a potentially important factor in the development of aquatic biofilm. An experimental cross-flow membrane array was used to investigate the relationship between the rate of membrane clogging and levels of TEP and other water quality variables in a lake water source. In ...
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Revised paradigm of aquatic biofilm formation facilitated by microgel transparent exopolymer particles
Transparent exopolymer particles (TEPs) are planktonic, organic microgels that are ubiquitous in aqueous environments. Increasing evidence indicates that TEPs play an active role in the process of aquatic biofilm formation. Frequently, TEPs are intensely colonized by bacteria and other microorganisms, thus serving as hot spots of intense microbial activity. We introduce the term ...
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Rapid sand filtration pretreatment for SWRO: microbial maturation dynamics and filtration efficiency of organic matter..Desalination 286 :120, 2012
Rapid sand filtration (RSF) is used today as an effective pretreatment procedure to enhance water quality prior to reverse osmosis (RO) membranes in desalination plants. RSF in newly operated desalination facilities requires a maturation period of about three months before the feedwater may be filtered efficiently. To date the desalination industry RSF has regarded RSF mainly as a physical ...
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MSC a biologically oriented approach
The effective filtration of source water is a prerequisite for water treatment in numerous industrial and agricultural applications. Obviously the purpose of filtration is to remove particles or “solids” from the inflowing water stream. Usually filtration efficiency is measured by various standard tests such as turbidity (NTU), total suspended solids (TSS), silt density index (SDI) and particle ...
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Two innovative devices for depth sampling in granular filtration systems. Desalination 286: 115–119, 2012.
Appropriate devices for obtaining either interstitial water or grain particle samples or for measuring dissolved oxygen (DO) at depth within the interior of large-scale, industrial granular bed filters are currently lacking. We developed two innovative samplers for studying a Rapid Sand Filter (RSF) at an operational SWRO plant: the first for water and granular material, the second for DO ...
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TEP-a major challenge for water filtration
The latest information about the role of TEP (Transparent exoploymer particles) and their role in biofilm formation in desalination and water treatment plants. Explains why filtration or other means of lowering the levels of TEP in source water are desireable but will not be easy to ...
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Transparent Exopolymer Particles (TEP): an overlooked factor in the process of BIOFILM FORMATION in aquatic environments
AbstractWe hypothesize that transparent exopolymer particles (TEP), present in high concentrations in most sea and freshwaters, are critical agents for biofilm initiation and development in many natural and anthropogenic aquatic environments. These gel-like particles appear in many forms, amorphous blobs, clouds, sheets, filaments or clumps ranging in size from ~2 to ~200 µm. TEP are mostly ...
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Revised Paradigm of Aquatic Biofilm Formation facilitated by microgel Transparent Exopolymer Particles
PAPER IN PNAS 109 (23) 9119-9124 , 2012 doi/10.1073/pnas.1203708109 ABSTRACT Transparent exopolymer particles (TEPs) are planktonic, organic microgels that are ubiquitous in aqueous environments. Increasing evidence indicates that TEPs play an active role in the process ofaquatic biofilm formation. Frequently, TEPs are intensely colonized by bacteria and other microorganisms, thus serving as ...
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Transparent exopolymer particles: Potential agents for organic fouling and
Transparent exopolymer particles (TEP) are ubiquitous in marine and freshwaters, and have been subject to intensive study by oceanographers and limnologists over the past 15 years. These microscopic organic particles (visualized by Alcian Blue staining for acid polysaccharides) may be considered a planktonic form of exopolymeric substances (EPS). Two aspects relating to the potential involvement ...
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Project - OceanCube Seafloor
OceanCube Observatories, composed of a group of researchers from Woods Hole Oceanographic Institution, are using PME’s T-Chain sensors as a part of their instrumentation package located on the sea floor off the coast of Japan. The OceanCubes are marine observatories located in areas where upwelling of cold, nutrient rich and hypoxic water is expected on a seasonal basis. PME’s T-Chain ...
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