Intake of animals grazing grass pasture is in part infl uenced by canopy density. Our objective was to determine the vertical distribution of dry matter and neutral detergent fi ber (NDF) within temperate perennial grass swards. The study was conducted in 2004 and 2005 on a Plano silt loam (fi ne-silty, mixed, superactive, mesic Typic Argiudolls). When leaf height of each grass reached 25 cm in...

The localization of membrane-associated specializations (basal lamina and cytoplasmic density) at sites of acetylcholine receptor (AChR) aggregation is consistent with an involvement of these structures in receptor stabilization. We investigated the occurrence of these specializations in association with AChR aggregates that develop at the cathode-facing edge of Xenopus muscle cells during expo...

A study of alternative chromium reduction methods was performed for wastewater or contaminated water. Two existing chromium reduction treatment methods were tested on the wastewater samples: treatment with (1) zero-valent iron, and (2) bacteria cultures. We found that both methods can reduce chrome. However, the chrome reduction process using bacteria is considerably slower than that using iron...

High density of herbivore populations can lead to intense foraging competition and depletion food consequently lowering diet quality population performance. We tested for the effects eastern black rhinoceros (Diceros bicornis michaeli) in nine situ 0.01–0.7 individuals per km2 range on their while controlling plant available moisture nutrients. used faecal calcium, phosphorus, copper zinc conce...

resources by placing highly erodible land into perennial vegetation for 10 yr. Similar programs have been used Management practices for conversion of land supporting perennial historically in the USA to control erosion (e.g., soil vegetation to crop production are needed. Effect of haying (hayed bank program) and influence grain supplies. Programs or not hayed), cropping (annual crop with no-ti...

Chi (2005) has proposed that students experience difficulty in learning about physics concepts such as light, heat, or electric current because they attribute these concepts with an inappropriate ontological status of material substances rather than the more veridical status of emergent processes. Conceptual change could thus be facilitated by training students in the appropriate ontology prior...

Wettability is a major factor in determining whether a material can be effectively and efficiently used as a component in greenhouse substrates. Poor wettability can lead to poor plant growth and development as well as water use inefficiency. This research was designed to test the wettability and hydration efficiency of both traditional and alternative components of substrates under different i...

The aim of present work is to develop colon specific matrix tablets of tramadol using natural almond gum as carrier. Matrix tablets of Tramadol HCl were prepared by using 30, 40, 50, 60 and 70% w/w of tablets of Almond gum as carrier by wet granulation technique. These tablets were compression coated with Eudragit S100 to prevent drug release in stomach. All formulations were evaluated for hard...

A broad range of plant selections across the orange subfamily Aurantioideae were screened in solution and soil culture for their tolerance to low iron (Fe) stress. Young seedlings grown in soil were transferred to tubs of +Fe nutrient solution, which was later replaced after a brief period with a –Fe solution. Over several trials, ’20 white root tips were harvested periodically from the plants ...