Category: Sciences 2502

Puerto Rico, formally known as the Commonwealth of Puerto Rico, is a Caribbean Island with a population of 3,142,779 people as of July 2021 (Central Intelligence Agency, n.d.). Puerto Rico has a rich culture that includes Spanish, American, and Afro-Caribbean influences (Greiner, 2018). Tropical rainforests cover part of the island’s landscape, while mountain ranges, including…

To acquire knowledge about a place, a person needs time and local expertise. Books, maps, and the scientific background will not help much. The knowledge, however, can be obtained from men and women residing near this place. They can tell about what they feel about this site, how they express their attitude to it. What…

Introduction Polyunsaturated fatty acids (PUFAs) are important biomolecules in maintaining the health of living organisms. Therefore, they are known as essential fatty acids. However, animals cannot produce PUFAs because they lack some of the enzymes required for their biosynthesis. As a result, there is an increased interest in PUFA production in microorganisms (Elrazak, Ward &…

Table of Contents Hypothesis Testing and Inferential Analysis Errors When Carrying Out a Test of Significance Counselling Scenarios Involving Variables References Hypothesis Testing and Inferential Analysis There are a number of procedures during the research process that are important to take into account. The two particularly significant ones are hypothesis testing and inferential analysis. Both…

Introduction Estimation of oil reserves is important to the oil industry. It allows for future planning for fields, companies and countries. All these levels require a basis for assessing the value of a production through development of standards for determining volumes of reserves. By using probable, possible and proved reserve categories of probabilistic methods to…

Table of Contents Introduction Properties of Li Development and Application of Li Properties of PTFE Development and Application of PTFE Conclusion References Introduction It is safe to say that people have found a use for all the chemical elements of the periodic table. Synthetic elements are also used in various fields of industry and science.…

Introduction The protein evolution rate and mechanisms are one of the crucial questions in evolutionary biology. It was estimated that this rate depends on the protein’s functional constraints. Modern methods of investigation, in particular, amino acid sequence, provide an opportunity to examine the dependence of protein functions on its primary structure (Zhang & Yang, 2015).…

Statistics in today’s world is one of the fundamental disciplines since the world population makes decisions based on the available information. The today’s review subject will be the hypothesis testing, analyzed in Part 8 of our textbook. In this review, I will present you with the ‘middle-quality’ type of source, which is considered to be…

The choice of the research approach is an important decision because it determines further validity and reliability of the study results. The selected approach, qualitative or quantitative, defines the research design, methods of data analysis, and generalizability of the results. Quantitative research is usually more formal, objective, and applies a deductive approach, while qualitative research…

Table of Contents Probability Sampling Non-Probability Sampling Stratified Sampling Reference Probability Sampling Probability sampling is the method that is based on the premise that all the members of the population have an equal possibility of being chosen for study or observation. It usually includes such main sampling types as simple random, systematic, stratified, and cluster…