CHEMISTRY
CHAPTER ONE INTRODUCTION 1.1 Background to the Study Science had been of great importance internationally for sustainable and socio-economic development as well as for technological advancement of nations. Knowledge of science and technology is therefore a requirement in all countries and needed by all people globally due to numerous challenges that are facing them. These […]
ABSTRACT Chemistry students’ perceptions of the chemistry laboratory learning environment were investigated in an Indonesian University. An already existing instrument Chemistry Laboratory Environment Inventory (CLEI) questionnaire was translated into Bahasa Indonesia and administered to 410 university students in three different years of chemistry study. Data analyses supported the validity and reliability of the instrument when
AVAILABILITY OF LABORATORY FACILITIES IN CHEMISTRY DEPARTMENT IN SCHOOLS Read More »
CHAPTER ONE 1.0 INTRODUCTION The global problem concerning contamination of the environment as a consequence of human activities is on the increase. Contamination has resulted from industrial activities, such as mining and smelting of metalliferous ores, electroplating, gas exhaust, energy and fuel production, fertilizer and pesticide application, and generation of municipal wastes (Kabata Pendias and
PHYTOEXTRACTION OF SOME HEAVY METALS FROM SELECTED METAL DUMPSITES IN ZARIA, NIGERIA Read More »
CHAPTER ONE 1.0 INTRODUCTION There is a growing demand for herbal remedies for the world market despite the growth of the synthetic medicine production. At the same time, in the last decades there has been a sharp increase in the collection of some rare and endangered herbs from wild populations in many regions of the world
CHAPTER ONE .0 INTRODUCTION 1.0.1 BACKGROUND OF THE STUDY Medicinal plants have always been associated with cultural behaviours and traditional knowledge. The renaissance of interest in plant products has been stimulated by the use of plant extracts in chronic conditions for which conventional drugs is perceived to offer very little specificity in its target (Rhiouani et al.,
CHAPTER ONE 1.0 INTRODUCTION Ever since ancient times, people looked for drugs in nature in search for cure for their diseases. In view of the fact that at that time there was no sufficient information either concerning the reasons for the illnesses or concerning which plant and how it could be utilized as a cure,
CHAPTER ONE 1.0 INTRODUCTION 1.1 PHYTOCHEMICALS Phytochemicals are chemical compounds that occur naturally in plants (phyto means “plant” in Greek). Some are responsible for color and other organoleptic properties, such as the deep purple of blueberries and the smell of garlic. The term is generally used to refer to those chemicals that may have biological significance,
CHAPTER ONE 1.0 INTRODUCTION A gum in general, is any water-soluble or water-swellable polysaccharide that is extractable from marine and land plants, or from microorganisms that possess the ability to contribute viscosity or gelling ability to their dispersions (Abu Baker et al., 2007). The most fundamental property of a gum therefore is its water solubility
CHAPTER ONE INTRODUCTION 1.1 Background Study Water is life and is known to be next to oxygen in the order of importance in the sustenance of life. In fact, about two-thirds of human body is made of water. This colourless, odourless and tasteless liquid is essential for all forms of growth and development and is the basic
CHAPTER ONE 1.0 INTRODUCTION Many of the developing countries including African countries like Nigeria practice traditional medicine as its main source of health care. This traditional medicine is normally gotten from plant origin [Rehan Ahmad et al, 2008, Stephen bent, 2008].Today nearly 88 percent of the global populations switch to plant derived medicines as their first line of
