external fluted feed rolls are commonly used in grain drills. the fluted feed roll meters a volume of seeds and does not singulate the seeds as do the precision planters; therefore, there will be inherent variation in the number of seeds delivered per unit of time. this research was conducted to investigate the effect of seed meter drive shaft and ground speeds and outlet positions in a grain d...

poor stand establishment of canola (brassica napus l.) under flatland mechanized planting and crust-forming soil is a major problem for farmers in central iran. previous research there showed that irrigated cotton emergence on crust-forming soils under flatland planting can be significantly improved using a double-disk planter with zero-pressure press wheel tires and no crust-breaking. in that ...

Aim: The aim of this investigation was to analyze the physical, gravimetric, frictional, aerodynamic, and mechanical characteristics cotton seeds at three different moisture content levels, ranging from 8% 14% on a dry basis develop power tiller-operated pneumatic planter.
 Study Design: Completely Randomized Design Tukey pairwise test in done SAS On Demand for Academic platform used study...

Green infrastructure, that is, wet weather management approaches and technologies that infiltrate, evapotranspire, capture, and reuse stormwater to maintain or restore natural hydrologies, can affect temperature in different aspects of the urban environment. Restoration of natural landscape features and local installations of rain gardens, green roofs, green walls, infiltration planters, permea...

In presenting some thoughts on perspectives in global epidemiology, I want to emphasize that we are dealing with a moving picture that changes not only from place to place, but also in time over the centuries, year by year, and even day by day. Imagine the evolution of the world, speeded up so that years pass in seconds, and centuries in minutes. Far back in history there were small foci of hum...

The American South before the Civil War was distinguished by a rural agricultural economy based on chattel slavery and in many places a moist warm climate favourable to infectious and parasitic diseases. These conditions led southerners to claim that the ante-bellum South was medically and scientifically distinctive, a viewpoint that is examined critically in this collection of essays. Accordin...

InnovatIvE DayDrEamIng Neuroscientists have been studying what the brain does when it isn’t doing anything in particular.1 Neuroimaging studies have found that the brain is surprisingly busy. In addition, the body is putting quite a bit of effort into that activity, as measured by a drop in blood flow of just 5–10 percent during periods of “rest.” Functional magnetic resonance imaging suggests ...

This dissertation pursues a twofold proposition: writers of the long eighteenth century widely presumed that poetry influenced the “common weal” (the common wellbeing, conceived as a national community); and this expectation guided poetic composition even at the level of strategy or “design.” I demonstrate this claim in a series of three case studies, each of which delineates an elaborate, inte...

SUMMARY This report reviews the current state of mechanization of operations, from establishment through harvesting and transportation, for short-rotation hardwood plantations. Given that essentially all of the high production plantations in the U.S. are intended for pulp production, with residues for energy as a secondary product, the report focuses mainly on approaches for producing trees gre...

OF PAPERS TWENTY-SECOND ANNUAL SUMMARY OF CHEMICAL LABORATORY REPORTS South African Sugar Factories, Season 1946-47~ By H. H. DODDS and J. L. DU Torr. For the third successive year rainfall, 32.02 inches, and humidity have been very low, though the rainfall was not quite so unfavourably distributed as in the two preceding years. The mean annual temperature, 69.4°F., was considerably above the a...