Afterwards record the volume. Extract the aluminum block from the cylinder and dispose of the remaining water and clean the cylinder before storing it away. For the second half of the experiment retrieve a single piece of aluminum foil and cut out a 15cm x 15cm square. Then calculate the width and length of the foil and record the data in the table. Finally determine the mass of the piece of aluminum foil and record it.
Then get the Acetic acid and pour exactly 100mL of it into the graduated cylinder (This should almost fill it up). When that is completed repeat steps 1 and 2 four more times, which would mean five graduated cylinders of 100mL of Acetic acid. Part 3: Carrying out the reaction Wash the 250mL-beaker and dry it with paper towels. Add one of the 4.2 grams of catalyst (Sodium Hydrogen Carbonate) that has been obtained in step one into the beaker. Making sure that the beaker is dry before hand.
This weight was recorded to four significant figures. After this, piece of magnesium was wrapped around the tip of copper wire. Following this, the buret was filled with about 10.0 mL of concentrated HCL and water was added until the buret was full. The copper wire with the magnesium was then putted into the buret and held in place with the rubber-stopper to make sure the copper wire wouldn't fall to the bottom. Distilled water was pure into the rubber-stopper to make sure the buret was completely filled and to make sure there wouldn't be any bubble.
The mechanical properties of concrete determined in the laboratory include compression strength, splitting tensile strength and flexural tensile strength. The influence of partial replacement of fine aggregates by copper slag on the compressive strength, split tensile strength on cylinders and flexural strength of prisms has been evaluated. The test results showed that there is a possibility of use of copper slag as fine aggregate in
Approximately 2 gm, nearest to 0.1 mg, oven dried cornhusk fibres, were weighed out accurately in weighing bottle and transferred to a 100 ml beaker. 40 ml of cold (10-15˚C) 72% sulphuric acid was added gradually to the fibres in small increments while stirring the mixture and macerating the fibres with a small glass rod. The beaker was kept in a bath at 2 ± 1˚C for dispersion of material. After the specimen was dispersed, beaker was covered with a watch glass and kept in a bath at 20 ± 1˚C for 2 hours. Mixture was stirred frequently to ensure complete
Three alloys were prepared having 2.5, 3.0 and 3.5 weight percent silver designated as hypo-eutectic, eutectic and hyper-eutectic alloys, respectively. To replenish indium losses during alloy making, a 1.5% allowance was added for charge calculations. The alloy making sequence was as follows: first pre-weighed indium shots were placed in an alumina crucible and heated to 165 °C. After complete melting of indium, pre-weighed silver filings were added in the melt and stirred with stainless steel spatula. The temperature of the melt was raised to 185 °C and the melt was kept on stirring for 10 minutes.
B.Glycosylated haemoglobin (GHb) separation : 1-Remove cap from the ion – exchange resin tubes and label as test . 2-Add 0.1ml of the haemolysate from step A in to the appropriately labeled ion exchange resin tubes . 3-Insert a resin separator in to each tube so that the ubber sleeve is approximately 1cm above the liquid level c the resin suspension . 4-Mix the tubes on a rocker , rotator or a vortex mixer continuously for 5
200ml of water was then added to the filtrate in a 500ml beaker with constant stirring. White solid was formed in the process of addition and the solution was then left undisturbed in an ice bath for 10minutes. Once most of the solids had settled at the base of the beaker, the solution was decanted. 10ml of ethanol was added to the remaining suspension and was transferred in a clean centrifuge and centrifuged for 2minutes at 6000rpm. After the first centrifugation, the supernatant was discarded and the residue was washed by adding 14ml of ethanol.
Quickly the serum was acclimated to 0.75m Sodium sulfate and 3 volumes of Affi-T gel was included under tender shaking at 200c. following 1 hour the gel was washed three times with three volumes of 0.75m Ammonium sulfate precipitation and the ensuing arrangement was conformed to the first volume as depicted above (Honge et.al., 1994). 2.18.2 Non-Chromatographic
was used on all sides of the confined concrete column. Eight ASTM A706 Grade 60 #7 deformed steel bars were used for the longitudinal mild steel reinforcement bars inside the confined concrete of the column. The selection of ASTM A706 reinforcement bars were based on the recommendations of ACI 318-11 Code Section 18.104.22.168. The longitudinal mild steel reinforcement bars were extended in the entire column height (i.e., 104 in.). The longitudinal mild steel reinforcement bars
32 100 μL of afore-prepared sample solution and the mixed reference standard were diluted 100 times with ethyl acetate. 50 μL of these dilution solutions were separated on the TLC plate coated with SNISG. The plate was developed with petroleum ether: ethyl acetate (4:1) and the movement of solvent was usually controlled at 1 cm from the upper edge. After completion, the plate was dried until no solvent smell remained. It was sprayed with an ethanol solution containing 10% sulfuric acid, and heated at an infra-red drier until obvious color came up, as shown in Fig.2 (B.ab).