This article examines the possibility of improved social welfare as a result of the entry of a new private firm, domestic or foreign, into the upstream industry, in a situation where the upstream industry had a monopoly structure with the existence of a single government firm.A public firm can be privately or publicly managed, that is to say that i
The asilid genus Laphyctis Loew, 1858 is revised.The genus is restricted to the Afrotropical Region where it has been confused with the more widely distributed Laphystia Loew, 1847, which currently has Tools no Afrotropical representatives.Three previously described species are recognised: Laphyctis gigantella (Loew, 1852), type of the genus, Laphy
A field trial was conducted at the Institute of Forage Crops (Pleven, Bulgaria) from 2015 to 2017.It studied the effects of natural products on Acyrthosiphon pisum density, as well as changes in the chemical composition, content of plant fibre components and enzyme degradability in forage pea.Treatments with the natural insecticides Madex and Agric
Abstract Background Male field crickets produce pure-tone calling songs to attract females.Receivers are expected to have evolved a "matched filter" in the form of a tuned sensitivity for this frequency.In addition, the peripheral directionality of field crickets is sharply tuned as a result of a pressure difference receiver.We studied both forms o
BackgroundMicronutrient deficiencies are common among household/family members due to shared lifestyle and dietary habits.The extent of biochemical abnormalities in household members of children presenting with symptomatic vitamin D deficiency remains unknown.AimInvestigate the prevalence of vitamin D deficiency and biochemical osteomalacia in the