zayanderoud basin is one of the important agricultural areas in country level because of climatic variety and resuscitative water of zayanderoud river. since frost phenomenon especially late spring frost incurs great damages on fruit trees and agricultural products of this region, it is necfessary to study frost in this basin.in this research, the intensity of frost during cold period and sprin...

In this paper, a low voltage bandgap reference circuit has been proposed. The introduction of modified beta multiplier bias decreased the mismatch caused by PMOS transistors opamp contribution. By shifting fixed resistors to NMOSs drain side, minimised threshold between two NMOS transistors. A 200-point MC simulation showed 0.9 mV standard deviation, with 0.34% accuracy. simulated temperature c...

Para definir su capacidad de producción grano e introducir al amaranto (Amaranthus spp.) como cultivo para el ciclo agrícola Otoño–Invierno (OI) en noreste México, Campo Experimental la Facultad Agronomía Universidad Autónoma Nuevo León, Marín N. L., se condujo un experimento bajo diseño bloques completos azar con arreglo parcelas divididas y dos repeticiones. Se probaron cuatro genotipos Amara...

The responses of rectal temperature (RT), respiratory rate (RR) and heart rate (HR) of ostrich (struthio camelus) chicks during road transportation were investigated using standard recording procedures. The RT and RR of the ostriches increased significantly (P<0.05) from 39.5 ± 0.1 0C and 12.2 ± 2.0 breaths per minute (bpm), respectively, before transportation, to 40.2 ± 0.3 0C and 50.7 ± 9.1 b...

Three ceramic compounds, LuFeO3, LuFe0.95Ir0.05O3, and LuFe0.90Ir0.10O3, were fabricated via using solid-state reaction technique. Scanning electron microscopy (SEM) analyses have shown the porous nature of samples. The loss-tan(δ) Ir substituted compounds are less than undoped sample at frequencies &amp;gt; 105 Hz. impedance study has revealed samples higher values. Z″ M″ vs frequency plots un...

The study is an investigation into the effects of CDA and Ca (OH)2 on geotechnical properties expansive (Sample A) loose soil B). experiments were designed to adding in various percentages by weight (5%, 15% 15%) dry with 5% constant (OH)2, which produces pozzolanic reactions samples. Sample A was collected at Moniya, Ibadan, B from polytechnic, Ibadan and, cow dung obtained a farm settlement I...

Background: In-situ preservation of cauda epididymal spermatozoa at -10 degree centigrade with electrolyte free media for obtaining maximum functional gametes than preservation at 5 degree centigrade. Materials and Methods: Electrolyte free media prepared with soybean lecithin-glycerol, Coenzyme Q10 - glycerol and soybean lecithin - Coenzyme Q10- glycerol were inoculated separately into ligated...

Nanoporous silicon powder was produced via efficient magnesiothermic reduction. In this work, the thermal effect and reduction process time were investigated on the porous silicon structure. The nanoporous silicon powders were characterized by  X-ray diffraction analysis and field emission scanning electron microscopy. The results demonstrate that porous structure was changed to homogeneous and...

Pyrolitic conversion of lignocellulosic biomass, such as switchgrass and other agricultural residues, to bio-fuels is being considered for national energy security and for environmental advantages. Bio-oil, syngas and bio-char were produced and characterized from switchgrass at 400, 500 and 600 0C by pyrolysis. Bio-oil yield increased from 22 to 37%, syn-gas yield increased from 8 to 26%, and b...