Step changes in air temperature(±20oC) or velocity (±0.8 and ±1.5m/s) were introduced in an air drying process, in relation to standard drying conditions of 70oC and 1.5m/s of air temperature and velocity, respectively. Compared to the standard, the variable conditions caused a clear difference of the moisture content of the dried material and the drying curves deviated significantly after the ...

In the present study, the oleaginous fungus Mortierella alpina CBS 754.68 was screened for arachidonic acidproduction using inexpensive agricultural by-products as substrate. Four oilcakes were analysed to choose the best substrate among them. Sunflower oilcake was the most effective substrate for ARA production followed by soybean, colza and olive oilcakes. In the next step, seven variables in...

The kinetics of protochlorophyllide phototransformation and of the subsequent blue shift were studied in homogenates prepared from etiolated wheat leaves using fluorescence spectroscopy at high pressures. The pressure dependence of the processes was studied between 0.1 and 400 MPa. The activation volumes were calculated from the pressure dependence of the kinetical curves of the processes and w...

Cement manufacture has undergone extensive change in its attempts to rise to the successive challenges posed by society. The hydration of Portland cement is a complex phenomenon that depends on both reagent characteristics and reaction conditions. It is a well-known fact that the curing temperature plays an important role on the hydration kinetics. The present study is the first to be undertake...

Methods 148 consecutive patients with type A TAAD were operated on during 2010 2012 (122 (82,4%) males). Their age ranged 20 – 77 years, mean 49,3 ± 9,6. Acute (subacute) dissection was in 128 (86,5%), chronic – in 20 (13,5%). The causes of aneurysms forming were: arterial hypertension, atherosclerosis – in 91 (61,5%); BAV – 18 (12,2%); MS – 16 (9,8%); cystomedianecrosis – 16 (10,8%); blunt aor...

Bloom of Dunaliella salina was observed naturally in stagnant puddles of water off Kuwait's Bubiyan Island on 4 July 2004. In order to closely monitor this bloom, alga were collected and maintained as pure culture of the locally isolated D. salina. Set of experiments was conducted to study and evaluate the optimum culture conditions required for two samples of D. salina (one locally isolated an...