effect of controlled atmospheres (cas) at various concentrations of co2, n2 and o2 on the lethal times of tribolium castaneum and trogoderma granarium was investigated at 20 and 30 ºc. experiments were performed using a recirculatory multi-flask apparatus. the results revealed that, the shortest times (0.1, 0.3 and 0.9 day for adults, larvae and pupae, respectively) required to obtain 50% morta...

The method for quantitative determination of serum sodium as described by Vanatta and Cox (1) is adaptable to determination of urine sodium. However, wider variations in sodium and potassium concentrations, and the presence of ammonia and other interfering substances, necessitate certain modifications of the procedure. Apparatus and Reagents-The items of apparatus needed for the determination o...

Miller's 1950s experiments used, besides the apparatus known in textbooks, one that generated a hot water mist in the spark flask, simulating a water vapor-rich volcanic eruption. We found the original extracts of this experiment in Miller's material and reanalyzed them. The volcanic apparatus produced a wider variety of amino acids than the classic one. Release of reduced gases in volcanic eru...

The theoretical background and the experimental feasibility of an automatic control for the continuous trypsinization process are discussed. An automatic apparatus is described with experimental evidence that the optimal mean residence time of monkey kidney cells in the trypsinization flask is between 5 and 8 min, in a volume of fluid approximately ten times that of the tissue processed. A temp...

UNLABELLED PREMISE OF THE STUDY An efficient and inexpensive system was developed to produce smoke solutions from plant material to research the influence of water-soluble compounds from smoke on seed germination. • METHODS AND RESULTS Smoke solutions (300 mL per batch) were produced by burning small quantities (100-200 g) of dried plant material from a range of species in a bee smoker att...

Background: Variations in morphology and metrical values of Gall Bladder (GB) is quite common. These variationsare frequently observed during imaging procedures like laparoscopy cholecystectomy. The anatomicalvariation GB essential to clinician.Method: 48 adult cadavers were studied evaluate the morphometric study GB. size shape wereclassified with percentage. length breadth measured tailors ta...