hole in the head is one of the important diseases of cichlid fishes that caused by heximita or spironucleus infections. in december 2007, a diseased oscar was referred to the veterinary hospital, shahid chamran university, ahvaz, iran. infected fish showed an initial loss of appetite, exophthalmia, darkness of skin followed by holes appearing on the head surface and a complete refusal to feed. ...

In order to evaluate the efficiency of biocontrol agents of corn stem borer ,Ostrinia nubilalis, experiment was conducted in a randomized complete block by five treatments and four replication, including, Indoxacarb (Avant)®, Trichogrammawasps, Bacillus thuringiensis var: kurstaki, integration of Trichogramma sp. and Bt., and cont...

In order to evaluate the efficiency of biocontrol agents of corn stem borer ,Ostrinia nubilalis, experiment was conducted in a randomized complete block by five treatments and four replication, including, Indoxacarb (Avant)®, Trichogrammawasps, Bacillus thuringiensis var: kurstaki, integration of Trichogramma sp. and Bt., and cont...

We discuss stringy ${\alpha'}$ corrections to the gravitational wave signal generated in merging of two black holes. model with BPS compact massive objects heterotic string, described by standard vertex operators or coherent states. Despite expected cubic suppression w.r.t. General Relativity result, at tree level string seem leave a footprint memory on signals within sensitivity region aLIGO/V...

Primordial stars are likely to be very massive ≥ 30 M⊙, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range 10 − 10 M⊙. Such early black holes, at redshifts z∼ 10, could be the seed black holes for the many supermassive black holes found in galaxies in the local universe. If they exist, their mergers with nearby super...

In this article, by using the method of finite difference time domain (FDTD) and PML boundary conditions, we have studied the photonic band gaps for TE and TM modes in square and triangular lattices consisting of air holes in dielectric medium and compared the results. In addition, the effect of nonlinearity of the photonic crystal background on the photonic band gaps and comparison with the re...

We use the AdS/CFT correspondence to argue that large rotating black holes in global AdSD spaces are dual to stationary solutions of the relativistic NavierStokes equations on SD−2. Reading off the equation of state of this fluid from the thermodynamics of non-rotating black holes, we proceed to construct the nonlinear spinning solutions of fluid mechanics that are dual to rotating black holes....

We revisit the geometry representing l collinear Schwarzschild black holes. It is seen that the black holes’ horizons are deformed by their mutual gravitational attraction. The geometry has a string like conical singularity that connects the holes but has nevertheless a well defined action. Using standard gravitational thermodynamics techniques we determine the Free energy for two black holes a...

Woodpecker (Picidae spp.) damage to houses and buildings is a widespread and locally severe problem, yet the probability and type of damage has never been quantifi ed and related to home characteristics. Woodpeckers excavate holes in homes for a several reasons, mainly for building nest and roost cavities, drumming, and foraging for insects. We examined the external characteristics of houses th...