All the materials were purchased from Sigma-Aldrich and used as received unless otherwise stated. Reaction (1) How to make Sodium Azo-Tetrazolate--Pentahydrate (SAT) Approximately 2.15 g of Aminotetrazolate monohydrate was added to approximately 62.5 ml of 2 M sodium hydroxide. While being stirred, the solution was heated, increasing its temperature up 10 degrees Celsius, up to 60 degrees Celsius. Over a one hour time period, potassium…
Introduction Early man relied on fire for the luxuries of light, heat and cooking. Today, all these luxuries are taken for granted. At the flick of a switch, a push of a button or the turn of a knob, instant power is delivered to us. Mother Nature produces the natural renewable resources that can used to generate electricity and heat such as ocean tides, natural winds and the sun. A variety of these resources are finite including fossil fuels such as coal and oil. For the 21st century, coal, gas…
her sweet grin. “Wonderful!” She rises from her chair and grabs a spherical green object from a nearby shelf. She sets it on the table with a thump. “Is that a crystal ball?” Will asks. The sound of his voice sends my heart into a downward spiral. Heat rises up my spine. Whatever is in the air in this place, it’s making my emotions go haywire. The crystal ball suddenly sparks into a cloud of green, producing sparkles within it. The woman laughs at the sight. “So much attraction! I’ve never…
On day 10, the 75o Control plants grew an average of 4.55 cm. This shows that room temperature is good for plant growth. The 100 Watt (110o) plants all died by day 7 showing that extreme heat stress is very bad for plant growth. Some of the plants died on day 5 and one never sprouted at all, but all were dead by day 7. The 50 Watt plants all died on day 6, which means that 85o is worse for plants than 1100 because they survived for a shorter…
Where M.R is the moisture loss ratio, M_0 is the initial moisture content, M_t is the moisture content at time t, M_e is the equilibrium moisture content, t is time (minutes), and a, b, c, and k are constants. For the effectiveness of diffusivity, Fick’s equation was used (5) to estimate the dehydration kinetic of different osmotic conditions. M.R=((M_t-M_e)/(M_0-M_e ))=〖8/π^2 e〗^((-(π^2 Dt)/(4L^2 )) ) …(5) Where D is the effective diffusivity, and L is the length of the (cubical) sample.…
In Greek, this is an onomatopoetic word. This means it’s a word that imitates the sounds associated with the objects or actions it refers to (like the word buzz in English sounds like the sound a bee makes when he is flying around). The word zeloo imitates the sound of boiling water, and it literally means to bubble over because it’s so hot! In a positive sense, zeloo is to be zealous in the pursuit of good, to desire earnestly, to strive after, to pursue, to be eager to possess. In the…
Q1) State the normal values for the partial pressure of O2 at sea level (with barometric pressure of 760 mmHg) in the following a. Inspired air b. Alveolar air c. Arterial blood d. Venous blood 1a- 149mmHg 1b-100-104 PaO2(mmHg) 1c-95-100mmHg 1d-40-50 mmHg Q2) Interpret the probable underlying cause when a person becomes unconscious and dies on exposure to an atmospheric pressure of 200 mmHg. When the human body is suddenly exposed to this pressure…
Fig.7, shows that, the insulator behavior of the PVA for pure PVA. But, with increasing the time of reaction there is an improvement in the electrical conductivity of the PVA-Ag nanocomposite films. Fig.7 shows that, the (I–V) characteristic of the samples, and the inset of Fig. 7 shows the relation between the conductivity and time of reaction. Then, the dc conductivity was calculated at the (voltage = 10 V) using the relation. (S/cm) Where (d) is the sample thickness, (A) is the area of…
Two computation cases were introduced, one with a polyurethane graft and another with a silicon rubber graft. The computations were done under a pulsatile flow. Both cases were computed under maximum peak pressure as mentioned in the method section. The flow volume rate is expressed by integrating on surface as followed: Q=∬_A^ ▒v.dA (5) By integrating flow volume rate in time…
The sun was up to death. It was really hot. I felt as if the only to survive such a day was to sweat a lot. Of course, I was sweating. A lot. My stomach was aching. I have not eaten since that morning. I have spent almost two days just eating some bread with butter. Just a day before like this, I was notified by the U.S. Embassy Brazzaville that I failed my TOEFL test. The Fulbright Fellowship was no longer within my reach. The burden of the pain was still running all over my body. My dream was…