Calibration

Following the correct guidelines for significant figures is crucial in reporting accurate data that is reflective of the accuracy of the means used to collect it. It follows that the answer to any calculation can be no more nor any less precise than the least precise piece of data involved in the calculation. In this course, we will follow a set of rules meant to a) provide consistency to our significant figures and rounding and b) provide answers that agree, in accuracy and precision, with our…

for PbS leaching FeCl3·6H2O (g) to be added is found by: The weight of FeCl3·6H2O (g) added in our experiment was slightly larger than the theoretical amount of FeCl3·6H2O needed, as can be seen from the example equation below: Atomic Absorption Calibration Data We were asked to prepare a 10 g/L HCl solution from a 200 g/L standard solution, and found the volume by: Thus, we add 5 mL of 200 g/L HCl to get 100 mL of our 10 g/L HCl solution.…

Somewhere in the management system, e.g. part of your documentation, these controls shall be defined. • There are now three notes. In Note 1, there has been an addition of “analysis and improvement,” and the word “should” has been deleted, making it mandatory for all of these types of processes to be included. Noted 2 and 3 are new. Note 1: Processes needed for the quality management system referred to above include processes for management activities, provision of resources, product…

Regulations and legislation CLEAPSS (Consortium of Local Education Authorities for the Provision of Science Services) - This is service that provides advice and support in science and technology for a group of local establishments and schools. These schools can range from nursery education to A- levels or the equivalent, including pupils with special needs. CLEAPSS ensures that standards are maintained in laboratories, schools and other scientific and technical establishments, by covering a…

‘Organizational culture and identity’ are vital in organizational identification (M. R. Mills & Bettis, 2006). Work is an essential human activity; psychologically, socially, physically, and economically (Vredenburgh & Shea-VanFossen, 2009). Organizational structure specifies the existence of various departments, job functions and, to a certain extent, the hierarchical status of a person by virtue of their position. Due to the differentiation in job functions and educational backgrounds, people…

throughout the colonies. Another famous historian Gordon Wood, describes how the colonies were infected by the radical idea that every (white) man should be equal in the eyes of the law. Suddenly, in the eyes of the revolutionaries, all the fine calibrations of rank and degrees of unfreedom of the traditional monarchical society became absurd and degrading. The Revolution became a full-scale assault on…

Today, we will be talking about bias and how to assess it to reduce distortion of information or of behavior; which could be positive or negative biases. Our last session, we talked about central tendency, we saw how the wrong measurement of central tendency could misrepresent the data by biasing it, or distorting systematically. For those who were not absent last time, I will do a small recap of the central tendency and then I will illustrate what a systematic error (bias) in action. The…

PART 2 Article 1: Researchers disguise drugs as platelets to target cancer 1) Describe the structure of the nanoparticle, including what it is composed of and what it contains inside and possesses on the outside. Inside there is a synthetic core nanogel. On the outside it possesses a platelet membrane shell. The TRAIL is attached on the surface of membrane and Dox is loaded in the core of nanogel. ( Hu, 2015 para. 1) 2) Explain the mechanism of how the nanoparticle system delivers the drug to…

Miss Hawthorne has presented her six year old domestic short hair cat for having difficulty seeing. Terra is frequently missing her jumps from one couch to another and also has decreased her time looking out the window. The owner states that Terra is an indoor cat, not spayed, and has not received any vaccines. Terra also receives a homemade diet that is vegetarian based. The homemade diet includes: Rice, green leafy vegetables, fruits, mashed beans, soy beans, and tofu. The owner states that…

The infrared (IR) spectra of PVA nanofibers are shown in figure 3-a. According to this figure, polyvinyl alcohol FTIR spectrum has peaks at 1655 cm-1 relating to the bending band of (HOH) peaks in 2910 cm-1 and 2940 cm-1 related to the stretching bands of (CH2) and Peaks at 1710 cm-1 and 1573 cm-1 are related to the carbonyl group. Also, the peak in 1142 cm-1 indicating the presence of oxygen atoms, the band at 1097 cm-1 is assigned to (C-O) stretching vibration of the ether group and peaks at…