An increase in intracellular Ca2+ concentration ([Ca2+]) and morphological were simultaneously observed by epifluorescence and differential interference contrast (DIC) microscopy during fertilization of the sand dollar, Clypeaster japonicus. [Ca2+], which was detected by a Ca2+ indicator, Fluo-3, initially increased just beneath the sperm-attached site on the egg surface 8.6 sec after attachmen...

We summarize information concerning Recent and Pleistocene-Holocene Uruguayan sand dollars (Mellitidae), as well as Miocene taxa (Monophorasteridae). Recent and Pleistocene-Holocene species (Encope emarginata, Mellita quinquiesperforata, and Leodia sexisperforata) are at their southernmost limits of distribution, with only E. emarginata recorded further south than Uruguay. Lower temperatures to...

Many larvae and other plankton have complex and variable morphologies of unknown functional significance. We experimentally and theoretically investigated the functional consequences of the complex morphologies of larval sand dollars, Dendraster excentricus (Eschscholtz), for hydrodynamic interactions between swimming and turbulent water motion. Vertical shearing flows (horizontal gradients of ...

BACKGROUND To compare the efficacy of oral and intravenous administration of iron supplements for treating postpartum anemia. METHODS One hundred and four anemic postpartum women were studied prospectively. The criteria for the diagnosis of anemia were Hb<8 gr/dl and ferritine<10 microg/dl. They were randomised into two groups. Group A consisted of 78 women who received i.v. a total amount of...

Abstract This study aims to determine the characteristics of sediments found in Jeneberang River specifically upstream part. The data required includes results sieve analysis, grain diameter sediment and density sediment. was conducted by taking samples from segments around Sabo 7-1. obtained indicate that gradation particles consists fine sand, medium coarse gravel with a median (D50) 0.5-13.1...

Genes are regulated at the single-cell level. Here, we performed RNA FISH of thousands of cells by flow cytometry (flow-RNA FISH) to gain insight into transcriptional variability between individual cells. These experiments utilized the murine adenocarcinoma 3134 cell line with 200 copies of the MMTV-Ras reporter integrated at a single genomic locus. The MMTV array contains approximately 800-120...

Sand dripping in 1 dimensional Sand Pile Model is rst studied. Patterns and signals appear. Their behaviors and interactions are explained and asymptotic approximations are made. The total collapsing time of a single stack of sand is linear in function of the number of grains.

Abstract. A type of lightweight concrete called cellular (CLC) has a lower volume weight than ordinary and is made cement, sand, water, foaming agent. In this investigation, CLC was utilized as brick. The purpose study to ascertain how the compressive strength bricks would change if stone dust were used in place fine aggregate. Making with substitutions 0%, 50%, 100% aggregate experimental proc...

Cotton (Gossypium hirsutum L.) seedlings are considered to be sensitive to temperature stress. The exposure of plants to high and low temperatures can result in the production of reactive oxygen species that contribute to diminished plant performance. Plants have mechanisms that metabolize oxidants into less harmful chemicals, and enhancement of antioxidant metabolism has been shown to be benef...