this research set out to evaluate the effect of combined biological and chemical nitrogen fertilizers on some corn hybrids. to this end an experiment was conducted as split plot on the basis of randomized complete block design with four replications. main plots were included: use of chemical and biological fertilizers in four levels: 100% chemical fertilizer, 75% chemical fertilizer + 100% bio-...

in order to study the effect of chemical and biological fertilizers on silage corn under different plant densities, a split plot experiment was carried out in a randomized completely block design with three replicates in south western iran. the main plot included nitrogen fertilizer treatment at three levels (n1: with out chemical and organic fertilizers, n2: 75% chemical fertilizer + 100% orga...

IMPLICATIONS Sire selection should focus on that which is economical. This requires a true accounting of the traits that generate revenue or incur a cost within a specific beef cattle enterprise. Once the drivers of profit have been identified, sire selection should focus on the suite of traits that impact profitability. The use of bio-economic selection indices can dramatically reduce the comp...

As a teenager in a South Dakota hamlet (Pierpont, population 326 in the 1940 census) I had no idea that I would become a scientist. The only formal science course my tiny high school (40 students in four grades, taught by three teachers) offered was physics, taught by the sports coach (a history major) and featuring the ‘‘dissection’’ of a 1928 Overland (teacher: ‘‘I have been told that the mod...

The paper focuses on bio®lms subject to turbulent ̄ow and high liquid velocity (of the order of 1 m s) which can be found in heat exchangers, water distribution systems and in some wastewater reactors. An overall model describing bio®lm development is presented, which includes the effects of biomass detachment due to the hydrodynamic forces. A methodology for estimating substrate consumption fr...

COURSE DESCRIPTION: The course is designed for graduate students in biology wanting to aquire a more detailed working knowledge and appreciation of mammalian diversity in structure, function, ethology, and ecology. Knowledge and skills aquired in this course will be useful to field and laboratory studies in ecology, evolution, animal behavior, biogeography, wildlife management, and related disc...

Due to environmental pressure and the prevailing political economic situation in world, alternatives traditional fossil fuels are being sought. The use of bio-derived may reduce emission pollutants present jet engine exhausts. presented research investigates possibility replacing conventional fuel, which is kerosene, with plant-derived from marine algae jatropha. During analysis, based on avail...

Unit of Otolaryngology University Campus Bio-Medico, Rome, Italy Unit of Cardiovascular Science, University Campus Bio-Medico, Rome, Italy Unit of Cardiovascular Science, University Campus Bio-Medico, Rome, Italy Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy Unit of Otolaryngology, University Campus Bio-Medico, Rome, Italy Unit of Otolaryngology, University Campus Bio-Medico...

background: several grafting materials have been used for alveolar ridge augmentation. the literature lacks researches to compare cenobone to other grafting materials. the aim of this study was to compare cenobone/cenomembrane complex to bio-oss/bio-gide complex in lateral alveolar bone augmentation in terms of radiographic, histologic, and histomorphometric parameters. materials and methods: i...