Category: Sciences 2502

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 &…

Breathing is one of the essential processes of the body that sustains life along with the cardiovascular and neural activities. More specifically, it is responsible for the intake and absorption of the oxygen, which, in turn, is supplied into the rest of the organs through blood. When it comes to the respiratory system of the…

Phototrophs Organisms are usually classified based on their nutritional need, and according to this criterion, there are two distinct groups, the phototrophs and the chemotrophs. Phototrophs rely on energy from the sun to manufacture their food in the form of ATP (Parker et al., 2017). The sunlight oxidizes organic molecules to produce energy, which is…

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).…

In mathematics, numbers can be represented in whole, integer, fractional, and decimal forms. Depending on the form, the mechanics of arithmetic operations to add, subtract, multiply, and divide them change. For example, regular recalculation adds and subtracts whole numbers, as shown in equations 1 and 2. Integer numbers are added and subtracted by considering the…

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…

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…

The olfactory system contains four major components that form the olfactory path. The first component, the olfactory receptor, also called the smell receptor, consists of millions of cluster receptor cells called the olfactory epithelium situated at the back of the nasal cavity. The olfactory sensory neurons provide a connection of information from the olfactory epithelium…

Chapter four of Peter Singer and Jim Mason’s book, The Ethics of What We Eat: Why Our Food Choices Matter, is aptly titled “Meat and Milk Factories”. The chapter provides the reader with a detailed gaze into the insider activities of America’s commercial beef, dairy, and pork producers. Singer and Mason draw on their visits…