Crop rotations are an important factor for the design and implementation of sustainable agricultural systems. Integrated agricultural land use models increasingly acknowledge the role of crop rotations by assessing economic and environmental impacts of agricultural production systems. However, insufficient data on crop rotations often challenge their implementation. In this article, we present ...

Evidence from fMRI, ERPs, and intracranial recordings suggests the existence of face-specific mechanisms in the primate occipitotemporal cortex. The present study used a 64-channel MEG system to monitor neural activity while normal subjects viewed a sequence of grayscale photographs of a variety of unfamiliar faces and non-face stimuli. In fourteen out of fifteen subjects, face stimuli evoked a...

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......... 582 ALKALI-CATION SELECTIVITY IN NONLIVING SySTEMS..... . . . . . . . . . . . . . . .. 583 ALKALI-CATION SELECTIVITY IN BIOLOGICAL SYSTEMS. . . . . . . . . . . . . . . . . . .. 587 THE ORIGIN OF ALKALI-CATION EQUILIBRIUM SELECTIVITY .. .. . .. . .... . " 589 ANION SELECTIVITY. . . • . . . . . ....

low molecular weight organic acids are most predominant in apple juice among these components fumaric acid was not exceed more than 5 ppm. it was thought that the hplc is the best method of the determination of organic acids in the apple juice. in this study, chromatographic separation of organic acids of apple juice was obtained by preparing a sample and by applying them to acid phase for extr...

background: the abortifacient claim of senna alata (s. alata) was scientifically validated recently with alkaloids speculated to be the bioactive agent. this speculation is yet to be substantiated or refuted by scientific evidence. the present study was aimed to investigate the pregnancy terminating effects of the alkaloids from s. alata leaves. methods: twenty four pregnant rats (143.99±1.21 g...

To gain perspective on alfalfa-annual crop rotations in the upper Midwest, USDA-National Agricultural Statistics Service cropland data layers and Soil Survey Geographic Database layers were combined for six states (North Dakota, South Dakota, Nebraska, Minnesota, Iowa, and Wisconsin) and seven years (2006-2012). Soil texture and geographic location both significantly affected the length of the ...

In order to simulate growth and yield of crop in field scale, crop simulation models always require a lot of initial parameters. WebGIS is a powerful tool for obtaining, managing and analyzing spatial data on the Web. With the support of WebGIS, crop models based on web services can be easily run on the web by remote client and provide decision information and measures for crop production. In t...