Remote sensing is increasingly used in studies of periodic changes of land use and landsurface temperature (LST) calculations. In this paper, the effect of change in the area ofMaharlu Lake on climatic elements, land surface temperature and vegetation cover in theareas surrounding the lake were studied. To this end, the ETM + & TM sensor data ofLANDSAT satellite on May 22, 1987, May 17, 2000, M...

The human race has made great strides in understanding the world around us, but the understanding of why it is we understand eludes us! We know that thought originates in the brain, we know that the brain is a network of billions of cells called neurons, we know that neurons transmit electric signals between one another and we even know how they transmit these signals, but we still do not know ...

This paper investigates the number of random edges required to add to an arbitrary dense graph in order to make the resulting graph hamiltonian with high probability. Adding (n) random edges is both necessary and sufficient to ensure this for all such dense graphs. If, however, the original graph contains no large independent set, then many fewer random edges are required. We prove a similar re...

I this issue of PNAS, Stoler and colleagues report that typical sporadic colorectal cancers on average contain at least 11,000 genomic alterations per cell (1). Furthermore, they report that the genomic instability responsible for generating this number of mutations starts very early in the neoplastic process and can be found in adenomatous polyps, which are known to be the precursors of cancer...

Many questions remain about the biosynthesis of cellulose, the major plant cell wall component, not least of which is why plants have so many genes for the cellulose synthase catalytic subunit. Perhaps multiple isoforms of cellulose synthase are needed in the same cell for the formation of functional dimeric complexes.

Parishan Lake has been selected by UNESCO as a biosphere reserve and was recorded as an international wetland in Ramsar convention in 1986. This region is located (29°31'N 51°48'E) at 820 m in Kazeroon, Fars province, south of Iran and is the largest freshwater lake in the country. Parishan Lake is extremely important for a wide variety of wintering waterfowl and also for breeding waterfowl, es...

Parishan Lake has been selected by UNESCO as a biosphere reserve and was recorded as an international wetland in Ramsar convention in 1986. This region is located (29°31'N 51°48'E) at 820 m in Kazeroon, Fars province, south of Iran and is the largest freshwater lake in the country. Parishan Lake is extremely important for a wide variety of wintering waterfowl and also for breeding waterfowl, es...