Callbration of air sampling pump Lab Report Example | Topics and Well Written Essays - 750 words

Callbration of air sampling pump - Lab Report Example The volume flow rate, in this case, was a concept introduced to determine the volume of a fluid flowing past a given cross sectional area per second. In which case, the air sample is collected with a vacuum pump thereby allowing for determination rate of flow and time. The product of the sampling rate and sampling time gives the volume of air sampled. This hints on the importance of determining the volume rate at which the air pump is sampling air. The formula normally used for determining the volume flow rate is as follows: The concept of volume flow rate of air formed the basis for this lab, whereby an air sampling pump used. Soap solution is used and the time it takes a soap bubble to rise in the air sampling pump is recorded. Finally, the volume of the air is divided by the time taken to give the flow rate. An air sampling pump was obtained from the lab technician. The air sampling pump was calibrated against a 250 ml calibrator. Clamp and stand was set and burette fixed in place. 250 Ml burette was then obtained and filled with soap solution. A soap solution was prepared in a petri dish and then 250 ml of the solution was transferred into the burrete. With the 250 ml calibrator, the rise of the bubble through the 250 ml volume was timed using the stop watch. The time was recorded for trial 1. The whole procedure was repeated 4 more times with consistency for trial 2 to trial 5. The average for the consistent times was then computed and the result converted to liters per minute. The experiment was successful in achieving the objective previously stated thereby proving the validity of calibration of air sampling pump. The calibration process, during the experiment, paved way for obtaining the variables required in calculating the volume rate of air. The volume of the sample air was determined and the rise of the bubble timed. From the calibration, the experiment was

Analyze papers Essay Example | Topics and Well Written Essays - 1000 words

Analyze papers - Essay Example The colleges are cheaper and high school pay an average of $ 2,544 per year. The colleges attain high enrollment despite the harsh economic conditions in the society (Boggs p 3). Thesis: American colleges are democratic, diverse and offer equal opportunities in access of quality education American colleges are democratic since citizens have equal access regardless of age, gender, race or ethnic background. The education is accessible, quality and ensures a learning lifeline for the rural communities. The community colleges offer critical workforce for the nation since a majority of the first responders including firefighters, police officers and paramedics have postsecondary credentials (Boggs p 3). The education provide local economies with required skills such as the Alabama Southern Community College that offers paper technology programs to the pulp industries and Gulf Coast colleges that offer petrochemical technical programs. The colleges are inclusive and diverse in terms of na tionality, ethnicity, social economic status and disability composition of the student population (Boggs 4). All American politicians and educationists agree that education guarantees American competitiveness and productivity (Delbanco p 1). American colleges keep pace with knowledge economy through providing the required skills and expertise in the industries. Although education has existed since Ancient Greece and Rome, American colleges have gone further to formalize the education system by grant of the teaching license and modern colleges with library facilities. American colleges have specialized education and strive to reach many people as possible including women. Inclusion of need-based policies ensures equal access of education among social classes without any regard to social status or birth status of the individual. Interestingly, students from affluent families have chances of gaining admission to nonprofit colleges and gain knowledge on American and international cultur es (Delbanco 3). Unlike other college systems that aim at attaining higher employment rates like Chinese, American college system aim at enabling the multi-cultural student population to learn from each other. Indeed, a landmark case of Regents of the University of California v. Bakke (1978) demonstrated that inter-racial student population enables interchange of ideas and interaction of consciences. American colleges have utilized technology to ensure higher access and reduce costs associated with small classes per faculty. The hybrid model allow for electronic instruction and assessment. However, the standardized testing system of other countries such as China and Belgium is slowly gaining inroads in US decentralized system with the No Child Left behind Program assessment program proposed by President Barrack Obama. The standardized system will undermine liberal education ideologies, but will cater for the cost, use of technology and increase the transition from the school to coll ege. However, some qualities such as creativity, humility and insight in to ethical behaviors are immeasurable using standardized testing. American college system is under revolution due to increase in the use of information technology, globalization, inadequacy of secondary education and high debate on skills needed in the economy. Accordingly, older students are faced with challenges such as family demands,