Controlled traffic farming (CTF) is a mechanisation system in which all machinery has the same (or modular) working and track width so that field can be confined to least possible area of permanent lanes. CTF enables productivity non-compacted crop beds optimised for given energy, fertiliser water (rainfall) inputs. This study investigated agronomic response economic return grain sorghum grown ...

A parallel implementation of a sparse approximate inverse (spai) preconditioner for distributed memory parallel processors (dmpp) is presented. The fundamental spai algorithm is known to be a useful tool for improving the convergence of iterative solvers for ill-conditioned linear systems. The parallel implementation (parspai) exploits the inherent parallelism in the spai algorithm and the data...

pounds administered into the caudal vesical arteries were investigated under blood perfusion at a constant rate. TEA, physostigmine, phenylephrine, 5hydroxytryptamine, angiotensin II, lys-vasopressin, oxytocin and ergotamine caused a contraction of the bladder and constriction of the vesical vascular bed. Acetylcholine, bethanechol, carbachol, TMA, lobeline, nicotine, DMPP, neostig mine, histam...

Increased vasomotor discharge induced by bleeding caused renal release of renin in anesthetized dogs whether or not there was measurable change in either arterial pressure or total renal blood flow. Release of renin was prevented by ganglion blockade or local anesthesia of the renal nerves. Hemorrhage-induced release of renin occurred more consistently in dogs fed a low-sodium diet than in thos...