منابع مشابه
simulation and experimental studies for prediction mineral scale formation in oil field during mixing of injection and formation water
abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...
postnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Herbarium turns a new leaf
Steven Dakin and colleagues present a detailed analysis of the stimuli used in our study [1] revealing that our method of interpolation is associated with certain changes in the statistical properties of interpolated images. They argue that these changes might represent a possible source of the BOLD signal non-monotonicity that we observed in the primary visual cortex (V1). This finding is inte...
متن کاملHerbarium-based studies on taxonomy, biogeography and ecology of Psilochilus (Orchidaceae)
BACKGROUND Psilochilus is a poorly studied orchid genus distributed from southern Mexico to south-eastern Brazil. A taxonomic revision of this Neotropical endemic based on morphological data is presented. MATERIAL AND METHODS Over 170 dried herbarium specimens and flowers preserved in liquid of Psilochilus were analyzed. Morphological variation among examined taxa was described based on multi...
متن کاملOptical and Dielectric studies in zirconium(IV) tungstate nanoparticles prepared by chemical coprecipitation method
Nanoparticles of zirconium(IV) tungstate are prepared by chemical co-precipitation method. Thecharacterizations have been carried out by TG/DTA, DSC, AFM, XRD, FTIR and UV-Vis spectrum. PLspectrum shows two emission bands at 350 nm and at 477 nm. The effects of frequency on the dielectricbehavior and ac electrical conductivity have been studied. The dielectric constant is found to be 119.43 at1...
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ژورنال
عنوان ژورنال: Annals of the Missouri Botanical Garden
سال: 1936
ISSN: 0026-6493
DOI: 10.2307/2394163