Good morning/afternoon invited teacher and students. The expressive poem ‘Clancy of the Overflow’ written by the prominent poet Andrew Barton Paterson illustrates the country life of a drover as the ideal lifestyle as it is the beauty and nature of mankind. This poem is extremely critical of city life and seems to only convey the negative aspects that are involved. During this analysis various poetic techniques as well as aesthetic features will be used including suggestive language, alliteration
Buffer Solutions Preparation and testing the properties of buffer solutions 1. To prepare two buffer solutions of pH values of 5.2 and 8.8 2. To check the pH and buffer action of the prepared buffers 3. To examine the effect of dilution of the prepared buffers on their pH and buffering capacity Introduction ------------ A buffer is a physical area or object protecting something. A chemical "buffer" is a mixture of two compounds that protects the pH of a solution from undergoing
3) LITERATURE REVIEW Aceclofenac • Aceclofenac is official in IP & BP but not official in USP. • Official methods: Sr. No. Title Description Ref. No. 1. Estimation of Aceclofenac and re-leated substances. (IP 2010) • Liquid chromatographic sys-tem: • Column: a stainless steel col-umn 25 cm x 4.6 mm packed with spherical end-capped octadecylsilane bonded to porous silica (5µm), with a pore size of 10 µm and carbon loading of 19 per cent • Mobile phase: A. a 0.112 per cent w/v
Immunosensors make use of antigen-antibody interactions [1, 2] to detect a wide range of analytes which are of great interest in medical diagnostics, environmental analysis, and forensic medicine [3, 4], including pathogens [5], drugs [6], bacteria [7], toxins [8], and biomarkers [9]. Overall, immunosensors employ the same chemical approach of earliest immunoassays, but offer quicker and simpler analytical procedures that may be conducted at the point-of-care [10]. Immunosensors use an antibody immobilized
Aluminum induces cross‑resistance of potato to Phytophthora Infestans This article is about an experiment done to try to see if Aluminum can cause resistance in potatoes to a disease. Aluminum is commonly found in arid soils which accounts for 35% of all farmable on earth. The aluminum (specifically Al3+) targets the roots of the plants and causes stunted plant growth and abnormal root formation. THis causes stresses in the plant which could lead to cross resistance. This immunity has led to some
which can make the mixture lose it’s ability the catalyze reaction. This experiment is designed to investigate and compare, how the enzyme catecholase from potato extract reacts and shows different absorbency when mixed with catechol, and different pH buffer to when it just has the catecholse present in it. If our hypothesis is supported, then the tubes with the darkest color will have more absorbency. Background information about terms used in the experiment. Enzymes are macromolecules that helps speed
INTRODUCTION We encounter acids and bases on our daily lives. Acids are substances that have a pH of less than 7. On the other hand, bases have pH of greater than 7. They both react to each other to form salt. Acids and bases also exhibit some characteristics like acids are sour and bases are bitter in taste. Acids are also rough in texture while bases are slippery. But you can’t just touch or taste acids and bases as some strong acids and strong bases are dangerous. They contain chemicals that are
Isolation and Characterization of Eugenol from Cloves Jean Theresse Perez Human Biology 22 De La Salle University-Dasmariñas Dasmariñas City, Cavite, Philippines ABSTRACT Eugenol was extracted from cloves through the process called steam distillation. A total of 50ml of distillate were collected with temperature monitoring for every 5.0ml of collected liquid. The distillation curve showed that the temperature of volatilization of eugenol is from 98°C to 99°C which is way below its boiling point
Abstract Diffusion and osmosis in living cells are greatly effected by factors such as solution concentration, temperature, and surface area of the cell. This was studied using agar cubes of different sizes, dialysis tubing, and potato cores to demonstrate how the different factors affect cells. The process of cellular respiration can be altered due to temperature differences. Enzymes also greatly affect the molecular processes that occur. Enzymes are denatured at variety of pH and causes inactivity
solution mixture is added drop-wise into a Vitamin C solution. Continuous stirring is required. The conditions like low temperature and moisture content can be achieved. The organic solvent is then evaporated and by maintaining pH at 7.4 of the phosphate buffer solution (PBS), the solvent traces are removed. The Liposome dispersion is then stored under vacuum overnight. The liposome size can be downsized by sonication. Liposome characterisation i.e. size and surface structure can be observed using cryo-transmission
experiment is usually between 2 and 7, if the time taken was under 2 minutes we would of needed to reduce the volume of the enzyme added and if the time taken was over 7 minutes we would of needed to increase the volume of the enzyme, and adjusting the buffer to make sure the volume in the tubes are 7mls for each experiment. As no modifications where made we can move on knowing our enzyme is the correct volume to conduct our
investigate how PH affects the ability of raw meat to absorb water. · Independent Variable The independent variable for this experiment is the PH of the solution the steak is marinated in. I will achieve a range of different PH values by using buffers set at PH 1, 3, 5, 7, 9. I predict that there will be an optimum PH where the steak will absorb the most water. The amount of water absorbed by the raw meat will increase as you increase the PH up to the optimum and then decrease the PH as the PH
Introduction Lanthanum (La) is a member of the rare earth elements (REEs), which consist of a group of 15 trivalent metallic elements with similar properties. Lanthanum is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolism, especially during long-term exposure. Lanthanum can also cause cancer with humans, as it enlarges the chances of lung cancer when it is inhaled. Finally, it can be a threat to the liver when
ABSTRACT The diffusion rates of potassium permanganate, KMnO4 (MW: 158 g/mole), potassium dichromate, K2Cr2O7 (MW: 294 g/mole), and methylene blue (MW: 379 g/mole) were compared and observed on an agar-water gel. An amount of each of the three substances was dropped on the wells of the gel. The diffusion rates were recorded by measuring the diameters of the substances at a regular three-minute interval for thirty minutes. Potassium permanganate had the biggest diameter after 30 minutes. Methylene
This pH homeostasis lab is used to show how acids and bases react when submerged into different solutions - water, a homogenate, and a buffer. A homogenate is blended up water and the cell tissue. They are used to show how much pH the cells have when adding an acid or base to it. A buffer is a solution that doesn’t change it’s pH level, even when acid or base is added to it. They are important to help all living things maintain homeostasis. Homeostasis is the internal chemical balance that occurs
adjusted at 37°C and the speed of paddles was constant at 50rpm.After that, each vessel of the dissolution apparatus was full with 1 liter of phosphate buffer. Subsequently, each tablet was placed into its individual vessel. The test was performed over 8 hours with extracting 10mL of each sample and replaced with the same amount of the phosphate buffer which was at the same temperature over the 8 hours as the following: half an hour, one hour, two hours, three hours, four hours, five hours, six hours
may be increased/quickened by using a stronger Buffer Solution; in this case pH 8.4. Increasing the concentration means keeping all of the other substances at a constant concentration. This means there are more particles of the Buffer Solution available in the reaction, and were altered to get a bunch of results. I am able to show this through the stronger and weaker Buffer Solutions on my table and graphs. 15ml of Buffer Solution at pH 8.4 produced the amount of oxygen
Effects of Modifying Concentration, pH , and Boiling on Activity of Peroxidase Abstract An enzyme is a catalysis and catalysis s substance that increases the rate of a chemical reaction without itself going through a permanent chemical change. In this lab we will discover exactly how the substrate connects with the active site. The main substance we use throughout this lab is peroxidase a eukaryotic organelle from plant tissues. Once there is a color change we test that using a spectrophotometer
We've all heard things about alkaline water and how it can do wonders for your body and our health. But the question is: what is alkaline water anyway? Alkaline in alkaline water refers to the water's pH level. The pH level, in turn, is a measure of how acidic or alkaline the water is. Typically, the measuring scale for the acidity or alkalinity of a substance is 0 to 14. If a substance has a pH level of 1, it is said to be very acidic and a substance that has a pH level of 13 would be considered
Syringe, Ÿ Stop clock, Ÿ PH Buffers, Ÿ Conical flask with Bung including opening for syringe and gas syringe. Plan: Add 5cm3 of yeast into the conical flask, as this gives an easily measurable volume with little room for error that would occur in larger volumes, we also only want to measure the decomposition with the amount of oxygen given off and therefore don't need to notice the visual changes present in larger experiments. Add 5cm3 of PH buffer into the conical; flask and mix