It has shown some gradual increase in pharmaceutical purposes in Brazil. According to World Health Organization medicinal plants would be the best source to obtain a variety of drugs. About 80% of individuals from developed countries use traditional medicine‚ which has compounds derived from medicinal plants. Therefore such plants should be investigated to better understand their properties‚ safety and efficiency. In the last few years‚ studies have been conducted in different countries to prove
Premium Bacteria Agar Antimicrobial
EXPERIMENT NO-1 AIM- To determine the frequency of A. C. mains by using an electric vibrator. APPARATUS- Electric vibrator‚ table lamp‚ pulley‚ weight box‚ fishing cord‚ a. c. source. THEORY- when a cord of mass per unit length m is connected to the vibrating rod of the vibrator and stretched with a tension T‚ the cord vibrators in segments. If the length of the cord is then adjusted until the nodes are clearly marked‚ the frequency of the stretched string is the same as of the vibrating rod which
Premium
Calorimetry Experiment Purpose: The objective of this lab is to determine the enthalpy change for NaOH(aq) + HCl(aq) NaCl (aq) + H2O(l) Procedure: Before measuring the enthalpy of acid base neutralization‚ my partner Brian and I determined a calorimeter constant‚ using a homemade polystyrene calorimeter. With the following formula and data: qhot= cm (Tf-Ti) qcold=cm(Tf-Ti) SYSTEM DATA SURROUNDINGS DATA Water cold Mass: 50mL Water hot Mass: 50mL C=4.18 C=4.18 Ti=20 C Ti=31
Premium Sodium hydroxide Chlorine Calorimetry
Experiment Plan By: Ashley Project Question: What size of bouncy ball bounces the highest‚ small‚ medium‚ or large? * I predict the following will happen (my hypothesis): I predict that the smallest ball will bounce the highest since it is the lightest. | * Independent Variable: I will be changing the ball size. * Dependent Variable: The height of the bounce. * Controlled Variable: The height that I will drop the balls at. | The materials and amounts of each that is
Premium Balls Measurement Human height
Experiment 9 Thin Layer Chromatography Experiment: 9 Title: Thin Layer Chromatography Introduction: Chemical analysis is conducted on specific analytes (specific substance of interest in a mixture)‚ however it is often found that these analytes must be separated for the chemical analysis to conduct their analysis. Chromatography is a set up of laboratory a technique that is used to separate a chemical mixture. This technique is very useful as it allows us to follow the course of
Premium Thin layer chromatography Chromatography
------------------------------------------------- What were the grievances of the Third Estate in 1789? There were three national ‘estates’ in France‚ the First Estate made up of all clergy ranging from Archbishops to Priests and the Second Estate made up of nobility were the ‘estates’ that did not need to pay any tax at all. The Third Estate was defined negatively as everybody who did not belong to the first two estates including the bourgeoisie‚ the artisan workers and the peasants. With a
Free French Revolution Estates of the realm
What were the causes of WW1? In 1914‚ World War I broke out. It involved around 100 countries around the world. Between 1914 and 1918‚ over 59 million troops were used‚ over 8 million died and over 29 million were injured. This is the biggest war anyone has any witnessed yet; this is why WW1 is also known as the Great War. The main reasons why WW1 broke out were the Alliance System‚ Imperialism‚ the arms race‚ the Schlieffen Plan‚ and the trigger of this war was the assassination of Franz Ferdinand
Premium World War I World War II Archduke Franz Ferdinand of Austria
Tuskegee Experiment is one of the unethical Health Researches done in the United States. The way the research was conducted was against people’s civil rights. Totally secretive and without any objectives‚ procedures or guidance from any government agency. During the time that the project was launched there were very few laws that protected the public from medical malpractice or from plainly negligence. Also the Civil Rights act did not pass until the 1960’s. Before the Tuskegee Experiment in 1926
Premium Black people African American Race
think this experiment should be replicated today. The reason being is that the Generation we have today has a different mindset and that the experiment is unethical in my view. In 1961‚ Milgram was able to make the participants agree with the experiment. These results led to people trying out these trails because the participants knew the shock would be painful but not dangerous. With that being said‚ it shows you the mindset of the people during that time. People were laid back and were willing to
Premium Psychology Stanford prison experiment Ethics
EXPERIMENT 201: WORK‚ ENERGY AND POWER John Michael A. Ramos‚ Phy11l/A5 Abstract The essential conditions to be satisfied for work to be done are: Some force must act on the object. The point of application of force must move in the direction of force. W = F x s. SI unit of work is joule. Energy is the capacity to do work. The two types of mechanical energy are kinetic energy and potential energy. Kinetic energy is the energy possessed by an object by virtue of its motion. Potential energy is
Premium Potential energy Energy Force