Pressurized sand media filters are commonly used in drip irrigation systems to prevent emitter clogging. However, the performance of these may be improved with more information about retention solids at different bed depths under filter operation conditions and water sources. In this study, experiments a scaled were conducted clog two filtration velocities (30 60 m h−1) two-particle types (inor...

Colony-stimulating factors (CSF) active on five subgroups with different capacities to both human and murine bone marrow stimulate mouse granulocyte and macrocolony-forming units in culture (CFU-C) phage progenitors. CSF in these five peaks were found in the conditioned medium of were eluted from an Ultrogel AcA 44 gel Yoshida sarcoma cells (line YSSF-212T), filtration column withapparent molec...

Najafi-Ghiri M., Abtahi A. (2013): Potassium fixation in soil size fractions of arid soils. Soil & Water Res., 8: 49–55. Amounts of potassium (K) fixed in soil fractions of 10 calcareous soils of southern Iran were measured to evaluate the contributions of different soil size fractions to K fixation. Soil particles were fractionated after dispersion of the soils with an ultrasonic probe. Potass...

Local strain measurements opposite gravel contacts and around a single isolated perforation are reported for a high-density-polyethylene pipe (320 mm outside diameter, 32 mm thick) typical of that commonly used as part of the leachate collection system in municipal solid waste landfills. Emphasis is given to examining the localized effect of coarse gravel contacts on pipe strain and the strain ...

Wastewater reuse is essential for sustainable water management. However, it requires tertiary treatment within the plant to ensure suitable quality. This project aims investigate comparative performance of conventional (sand filtration) against membrane filtration technology demonstrate viability wastewater reuse. Sand along with two filtrations, Nano Filtration (NF) and Reverse Osmosis (RO), w...

The western sand darter Ammocrypta clara, and eastern sand darter Ammocrypta pellucida, are sand-dwelling fishes of conservation concern. Past research has emphasized the importance of studying individual populations of conservation concern, while recent research has revealed the importance of incorporating landscape scale processes that structure habitat mosaics and local populations. We exami...

Liquorpheresis (CSF filtration) comprises a therapeutical approach that has been proposed to treat several neurological conditions where antibodies, inflammatory mediators or abnormal peptides are the cause or play an important role in the pathogenesis of the disease. Continuous or intermittent CSF replacement may be an alternative approach not explored so far. Here, we review previous experien...

Colony-stimulating factors (CSF) active on both human and murine bone marrow colony-forming units in culture (CFU-C) were found in the conditioned medium of Yoshida sarcoma cells (line YSSF-212T), although the cells originated from rats. The CSF were inactivated by digestion with trypsin, alpha-chymotrypsin, and pronase. By chromatography on DEAE-cellulose, the CSF were separated into five subg...

BACKGROUND The aim of this study was to compare between slow and rapid sand filters for the removal of free-living amoebae during drinking water treatment production. METHODS Overall, 48 water samples were collected from two drinking water treatment plants having two different filtration systems (slow and rapid sand filters) and from inlet and outlet of each plant. Water samples were collecte...

Eight waterworks in The Netherlands, which use surface water as their raw water source, were sampled repeatedly between November 1978 and June 1981. At five waterworks , 30 of 45 samples of raw water contained viruses. Of 55 samples of partially purified water, 11 were virus positive, including 8 after coagulation, sedimentation, and rapid sand filtration, 2 after storage, coagulation, sediment...