The effect was investigated of sucrose concentration on sucrose metabolism and on the formation of exopolysaccharide (EPS) by Lactobacillus sanfranciscensis LTH2590 in pH-controlled fermentations with sucrose concentrations ranging from 20 to 160 g liter(-1). The EPS production increased and the relative sucrose hydrolysis activity decreased by increasing the sucrose concentration in the medium...

Effect of surface roughness on corrosion behavior for carbon steel was coated by metallic layers Cu- Ni Reinforced with Gr layers. Surface finishing P320, P600 and P1200 mesh used until a mirror shiny before at consecrations 0.25, 0.5, 1and 2 g/l Gr. First, X-ray diffraction), electron microscopy associated & Microscopic test specimens. The techniques were performed to study the effect sali...

This study was carried out in order to determine the effects of boron and cold stress on pollen germination of almond hybrids in vitro culture, two different media including the absence and presence of boron (0 mg/l, and 100 mg/l) in 10% sucrose and 1% agar medium at 24°C in dark conditions. The results showed that different treatments had a significant effect on the germination percentage. The...

effect of different co2 concentrations on sucrose metabolizing enzymes and on carbohydrate metabolism was studied for eight blackgram (vigna mungo l. hepper) genotypes grown in open top chambers under ambient (380 µmol mol-1) vs. elevated co2 (550 and 700 µmol mol-1) levels. the higher acid invertase activity over neutral invertase indicated the major role of acid invertase in sucrose breakdown...

In this study, we show that female African malaria mosquitoes Anopheles gambiae starved for 3-5 h start to engorge on sucrose at concentrations between 50 and 75 mmol l(-1). Half of the feeding response (ED50) is reached at 111 mmol l(-1) and the maximum response (0.4 mg) occurs at 250 mmol l(-1). Two receptor cells in a trichoid sensillum of the labellum, called the 'sucrose' and 'water' neuro...

We consider groups as algebras of type (2, 1, 0). A hypersubstitution of type (2, 1, 0) is a mapping σ from the set of the operation symbols {·,−1 , e} into the set of terms of type (2, 1, 0) preserving the arity. For a monoid M of hypersubstitutions of type (2, 1, 0) a variety V is called M -solid if for each group (G; ·,−1 , e) ∈ V the derived group (G; σ(·), σ(−1), σ(e)) also belongs to V fo...

the aim of this research was to improve quality and vase life of cut gladiolus flowers. the investigation was done with the effects of different concentrations of essential oil of thymol and zataria oil (50 and 100 mg l-1) and silver nanoparticles (3 and 5 mg l-1) and 8-hydroxyquinolin sulfate (300 and 400 mg l-1) with sucrose 3%. in addition, distilled water, ethanol 500 mgl-1 and sucrose 3% w...

BACKGROUND This study was performed to investigate expression and distribution of glucocorticoid receptor (GR) in the rat adrenal cortex, acute effect of ethanol on its expression and possible role of endogenous nitric oxide (NO) in this phenomenon. METHODS Adult female Wistar rats showing diestrus day 1 were treated with: a) ethanol (2 or 4 g/kg body weight (b.w.), ip), b) N(ω)-nitro-L-argin...

plantlets grown in conventional tissue culture systems usually encounter physiological and anatomical abnormalities including inability to photosynthesize, low chlorophyll content, open stomata, lack of a cuticle layer in the leaf, abnormal xylem parenchyma etc. photoautotrophic and photomixotrophic systems could diminish these problems. the purpose of this study was to increase the chlorophyll...