**Set theory is the ultimate branch of Mathematics**

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Mohammad Al - Amin

Set theory is a branch of mathematical logic that studies sets, which informally are collections of objects. Mathematical logic is a subfield of mathematics exploring the applications of formal logic to mathematics. It bears close connections to meet mathematics, the foundations of mathematics, and theoretical computer science. The unifying themes in mathematical logic include the study of the expressive power of formal systems and the deductive power of formal proof systems. Although any type of object can be collected into a set, set theory is applied most often to objects that are relevant to mathematics. The language of set theory can be used in the definitions of nearly all mathematical objects. The study investigates various types of set theory and their applications in solving real time problems. The main intent of the study is to explore different types of set theory and their dynamic usage in the different areas of problems. So the study highlights the dynamic ways in which different set theory are used. To do so, an exploratory research approach has been applied.

**A STUDY OF CONSUMERS’ EXPERIENCE ON ONLINE SHOPPING IN NIGERIA**

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Abdullahi Ayegba, Abubakar Abdullahi Ochiba, Omale Alhassan Dominic, and Onoja Abubakar Danladi

Online shopping is defined is the act of buying goods and/or services using the internet as a medium. This process removes stresses and risks in embarking on long distance journey as well as removing the barriers of buying an item from any part of the world no matter the distance. This work has the objectives of assessing the major mode of payment for online shopping, assessing the extent of delay experienced in the delivery of online goods if any, and assessing how satisfactory online shoppers are with the delivered goods or services.

**WATER LOSE TRENDS IN SOIL**

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CHERUIYOT .S.K, Prof Wilson Ng’etich and Dr. Joel Tonui

Water in soil are lost mainly through evaporation over the surface of the soil. In a research conducted at University of Eldoret in 2013, it was found that gravimetric water content Ɵ(Kg/Kg) drop with time (t) such that the two variables trace a predictable curve trend of the form.

**Stress and Coping Mechanisms among Hemodialysis Patients in the Gulf and Neighboring Countries: A Systematic Review**

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Jeffrey Navarro Rojas

Chronic kidney disease is a major health problem due to the significant financial burden for the healthcare system and like-wise for the patient who needs the treatment. The patient’s whole life situation is turned upside down with chronic kidney disease when they are confronted with the forced change to start treatment with hemodialysis. Patients undergoing hemodialysis require direct and continuous care. Identifying the stress and coping mechanisms used by the hemodialysis patients could make other people understand what these daily stressors mean to the patients and how they impact the daily lives of patients on hemodialysis are important to healthcare professionals who provide direct care for patients on hemodialysis. Thus, this study will add to existing nursing science knowledge of the person as a focal point of health care development.

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