We define the notion of whiskered categories and groupoids and discuss potential applications and extensions, for example to a many object Lie theory, and to resolutions of monoids. This paper is more an outline of a possible programme or programmes than giving conclusive results.

We consider several Hamiltonian systems for which the existence of Arnold's mechanism for diiusion (whiskered tori, transition ladder, etc.) has been proven. By means of Mather theory we show that the diiusion time may be bounded by a power of the homoclinic splitting.

Six different composite packaging materials were tested with the trades’ practice of polythene bags in storing smoked catfish for a period of six months. The thickness of the packaging materials ranges from 0.23 to 046 mm with water and oil absorption rates of the packaging materials varies from 0.23 to 10.00 and 0.28 to 10.857 glcm2/mm respectively. The impact resistance weight also varies fro...

We used an intrinsic optical imaging technique to examine postnatal developmental changes in the rat barrel response to a single whisker movement. We compared the optical response patterns between control and de-whiskered rats, from which whiskers were removed except for the D1 whisker just after birth. Barrel responses were evoked by D1-whisker movement stimulation, and the intrinsic optical s...

Charlie is not your average catfish. A master of disguise, this fish in fact an unmanned underwater vehicle developed by the CIA's Office Advanced Technologies and Programs 1990s. Its mission: to collect water samples without being detected. Charlie's human handler, perhaps disguised as a humble fisherman, controlled robotic via line-of-sight radio handset. At 61 centimeters long, catfish would...

The double-crested cormorant, Phalacrocorax auritus, is considered the primary depredating bird species on commercially produced channel catfish, Ictalurus punctatus, in the southeastern USA. We simulated different levels of cormorant predation on losses at harvest and economic effects on channel catfish production in a multiple-batch cropping system. We observed significant (P< 0.05) declines ...

six different composite packaging materials were tested with the trades’ practice of polythene bags in storing smoked catfish for a period of six months. the thickness of the packaging materials ranges from 0.23 to 046 mm with water and oil absorption rates of the packaging materials varies from 0.23 to 10.00 and 0.28 to 10.857 glcm2/mm respectively. the impact resistance weight also varies fro...

—Blue catfish Ictalurus furcatus are a big river species, native to major rivers of the Mississippi River basin and Gulf Coast streams of the central and southern United States, south into Mexico, northern Guatemala, and Belize. Blue catfish are native in 20 states and have been introduced into nine others, mostly along the Gulf, Atlantic, and Pacific slopes. Blue catfish are largest of the ict...

Bacillus strains isolated from soil or channel catfish intestine were screened for their antagonism against Edwardsiella ictaluri and Aeromonas hydrophila, the causative agents of enteric septicemia of catfish (ESC) and motile aeromonad septicaemia (MAS), respectively. Twenty one strains were selected and their antagonistic activity against other aquatic pathogens was also tested. Each of the t...

UNLABELLED Since 2009, catfish farming in the southeastern United States has been severely impacted by a highly virulent and clonal population of Aeromonas hydrophila causing motile Aeromonas septicemia (MAS) in catfish. The possible origin of this newly emerged highly virulent A. hydrophila strain is unknown. In this study, we show using whole-genome sequencing and comparative genomics that A....