Cathode ray tube

Capacitance properties of electrodeposited polyaniline films on stainless steel substrate. A.A. Al-Owais1,I. S. El-Hallag2, M.A. Ghanem3 1,3Chemistry Department, Faculty of Science, King Saud University, Riyadh ,SA 2Chemistry Department, Faculty of Science, Tanta University, Tanta, 31527, Egypt Abstract. Polyaniline (PANI) thin films were successfully synthesized from a mixed solution of 1M aniline and two different concentration solutions of H2SO4 on a stainless steel substrate. The…

The carbon supported PtFeS catalysts were prepared by a modified polyol method. In brief, 0.3 g carbon (Ketjen-black heat-treated at 2250 °C, SE = 160 m2 g-1) was dispersed in 135 g ethylene glycol. 5.993 g of 8 wt% H2PtCl6 (Umicore; Pt content, 39.8 wt%), 1.874 g of 8 wt% FeCl3. 6H2O (Sigma-Aldrich), and 0.352 g of 8 wt% (NH2)2SC (Sigma-Aldrich) previously mixed in ethylene glycol were added to the dispersion. The pH of the stirred reaction mixture was adjusted to ∼11 using 1 M NaOH dissolved…

filled dialysis tubes fill with different percentages of solute and placed them in beakers full of a different solute. Through this experiment, I saw what happens when the solution becomes hypertonic, hypotonic, and isotonic. My hypothesis was that bag A would shrink because the water would leave the bag to go to the higher concentration. Bag B would stay the same because it would be isotonic. Bag C and D would swell because water would rush into the cell where…

I chose to do my project on the Pyro board which is an adaptation of the Rubens tube. The Pyro board uses fire to demonstrate sound waves. I chose this as my project because I find music and fire fascinating. Having them interact to demonstrate the physics side of sound helped me understand all the different aspects that can effect sound waves and alter the way we interpret them. Before I started to build my Pyro board I did research on how they worked why they worked and why the flames reacted…

is to outline the process of planning an activity in science understanding physical science for a 5 year old child with the expectation of learning the concept of motion, inertia, force, velocity, acceleration and gravity by using balls, blocks and tubes. The report will also outline the pedagogy approach adopted by educators to ascertain that the child will engage in a physical science activity, which will improve the child’s skills of problem solving, critical thinking and reasoning in…

of Toothpaste The cycle of energy that gets put into the simple product of a tube of toothpaste is a rather lengthy one. Most people simply think of the raw materials that are put into the toothpaste, but what about the tube itself? Most people just consider the resources that are put into the paste, but what about the energy used to transport those resources or to mix them together. Perhaps one has considered the tube and the energy that was put into making it, but how about the energy put…

be an error in the experiment conducted, which will be later discussed. In order to show what should have happened, the absolute value was taken of the answers using the numbers that were read from the spectrophotometer. For example, in the PTU test tube the amount after ten minutes subtracted from the amount after twenty minutes gave the answer of -0.023, but instead, and instructed by our teacher, we took the absolute value and said it was 0.023. The formula used to display this is: Total =…

separate tubes. Next, we used a sterile loop to transfer two to four larger bacteria colonies from an E.coli plate into each of the two tubes. The bacteria was observed under UV light to make initial observations. We pipetted 10 ul of pGLO plasmid (0.08 ug/ul) into one of the tubes. Both tubes were incubated on ice for ten minutes. After ten minutes of incubation, the tubes were heat shocked at 42°C for exactly 50 seconds and then returned to ice. After two minutes on ice, we removed the tubes,…

In these camps “the death rates were so high, from malnutrition, typhus and exhaustion that the disposal of corpses became a serious problem.” (THE CAMPS) The treatment in transporting and caring for the victims is probably one of the main factors in the dehumanization of people during Holocaust. The victims were treated inferior simply because of their nationality. The Nazi’s made it a point to degrade these people in every way possible by taking away their rights and free will.…

When we finally arrived at the water’s edge my brother John and I were so excited, we basically leapt out of the car before it came to a complete stop. Larry and my uncles unloaded the cars, while my Aunt Janet and Sister Lorena went to pick up the tubes. John and I decided to jump in the water to cool off while everybody else got everything ready for the trip down the river. We were all laughing and smiling all the while oblivious to the impending tragedy that lies ahead. The moment I jumped…