Photopic contrast sensitivity of air-breathing scuba divers was measured with a translucent test pattern at depths up to 40 m. The pattern was composed of sine wave gratings with spatial frequency and contrast changing logarithmically. The spatial transfer characteristics were measured at various depths under controlled optical conditions in seawater and in fresh water. Analysis indicates that ...

Vertical depth migrations into shallower waters at night by the chambered cephalopod Nautilus were first hypothesized early in the early 20(th) Century. Subsequent studies have supported the hypothesis that Nautilus spend daytime hours at depth and only ascend to around 200 m at night. Here we challenge this idea of a universal Nautilus behavior. Ultrasonic telemetry techniques were employed to...

PTH-085 Figure 1 BSG 2014 abstracts Gut 2014;63(Suppl 1):A1–A288 A247 group.bmj.com on September 7, 2017 Published by http://gut.bmj.com/ Downloaded from

A decade of moored measurements from the Arctic Ocean’s northwestern Beaufort Gyre (collected as a component of the Beaufort Gyre Exploration Project) are analyzed to examine the range of mesoscale eddies over the water column and the dynamical processes that set eddy vertical scales. A total of 58 eddies were identified in the moored record, all anticyclones with azimuthal velocities ranging f...

Young-Ran Kang, MD1, Young-Hoon Jeong, MD1, Jin-Sin Koh, MD1, Ho-Cheol Choi, MD2, Jong-Woo Kim, MD3, So-Ra Park, MD1, Jeong Rang Park, MD1, Yongwhi Park, MD1, Seok-Jae Hwang, MD1, Choong Hwan Kwak, MD1, and Jin-Yong Hwang, MD1 1Division of Cardiology, Departments of Internal Medicine, 2Radiology and 3Thoracic and Cardiaovascular Surgery, Gyeongsang National University College of Medicine, Jinju...

Current study was carried out with aim to evaluate the effect of pressurized irrigation methods and furrow irrigation method with municipal effluent on distribution of salinity and moisture in the soil profile. The experimental study was designed by split plot layout with three irrigation methods including furrow, surface drip (SD) irrigation and subsurface drip irrigation (SSD) and two water q...

current study was carried out with aim to evaluate the effect of pressurized irrigation methods and furrow irrigation method with municipal effluent on distribution of salinity and moisture in the soil profile. the experimental study was designed by split plot layout with three irrigation methods including furrow, surface drip (sd) irrigation and subsurface drip irrigation (ssd) and two water q...

Seasonal variations of zooplankton communities were studied in the southern Caspian Sea for 4 successive seasons and 8 transects with 5 stations from 5 to 100 m depths which sampled during 2009. The zooplankton population constituted of 73.33% copepods, 24.21% rotifers, 2.23% cladocerans and 0.23% protozoans. Copepods were dominant at all stations with a density between 1456±531 ind. m-3 (Trans...