1. INTRODUCTION A solar cell is a device that converts the energy of sunlight directly into electricity by the photovoltaic effect. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight‚ while the term photovoltaic cell is used when the light source is unspecified.”Photovoltaics” the field of technology and research related to the application of solar cells in producing electricity for practical use.
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The Comparative Analysis of Simple Staining and Gram Staining Techniques by observing E. Coli and S. Pyogenes under the Compound Light Microscope INTRODUCTION: A German bacteriologist‚ Dr. Theodore von Escherich‚ was the first man in 1885 who discovered the bacterium named Escherichia coli‚ which are gram negative and appears in rod shaped. Most kind of bacteria E. Coli does not cause diseases and some strains indeed are beneficial in helping the process of food breaking down in the intestines
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plant biology‚ aiding this study are the fundamentals of histology and techniques in histochemistry. This experiment involved exercising free-hand sectioning techniques‚ learning maceration procedures and application of staining techniques. Sudan dye for Lipids and IKI test for starch were applied on section stem‚ root and leaf parts of Tridax procumbens. Stem cross-section of T. procumbens showed distinct ground tissues and fourteen to sixteen vascular bundles organized into a ring. The root
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gram-negative bacteria. Gram-positive bacteria has a thicker double layer of cell wall peptidoglycan molecules‚ and Gram-negative bacteria have a cell wall with only a thin layer of peptidoglycan molecules. Therefore‚ gram stain differential stain uses two dyes to differentiate between the two basic cell wall types. The differential stain has four components; a primary stain‚ a mordant that sets the stain‚ a decolorizing agent to remove the primary stain‚ and a counter stain used to color the cells that lost
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alter the arrangement of the phospholipids in the membrane allowing substances to leak out of the cell. Temperature also affects the membrane. As membranes relay on protein molecules to allow molecules to enter and leave the cell through facilitated diffusion the temperature must not exceed the approximate temperature of 50°C as at roughly this temperature proteins are denatured. This is due to an increase in kinetic energy making atoms in the protein to vibrate more; this breaks hydrogen and ionic bonds
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B.Sc. First Year Semester – I Paper I .Fundamentals of Microbiology Credit - 1 1 Scope & relevance of Microbiology i) ii) iii) Definition & concepts Types of microorganism Distribution of microorganisms in nature 2. Development of Microbiology as a Scientific Discipline 1.1 History i) ii) iii) iv) v) vi) Credit – 2 Early observation of microorganisms Spontaneous generation conflict : Contribution of scientists Recognition of the microbial role in diseases. Koch’s postulates Recognition of microbial
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DIFFUSION= The movement of atoms or molecules from an area of higher concentration to an area of lower concentration. Atoms and small molecules can move across a cell membrane by diffusion. OSMOSIS= Diffusion of fluid through a semipermeable membrane from a solution with a low solute concentration to a solution with a higher solute concentration until there is an equal concentration of fluid on both sides of the membrane. SELECTIVE PERMEABLE MEMBRANE=a membrane (as a cell membrane) that allows
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Coaster Marbles: How much Height to Loop the Loop? 7. Surface Tensions of Water 8. Effect of Propeller Size on Thrust Produced 9. How the Bernoulli’s Principle Works for Different Shapes 10. Orange Ripening and Vitamin C 11. Diffusion and Osmosis in Animal Cells 12. The Most Affective Antacid 13. The Antigravity Lifter 14. The Effectiveness of Garlic on Fighting Bacteria 15. Can Lettuce Seeds be Used as a Bioassay for Testing Toxicity 16. Is Soil a type of Electrical
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A solar cell (also called photovoltaic cell or photoelectric cell) is a solid state electrical device that converts the energy of light directly into electricity by the photovoltaic effect. Assemblies of cells used to make solar modules which are used to capture energy from sunlight‚ are known as solar panels. The energy generated from these solar modules‚ referred to as solar power‚ is an example of solar energy. Photovoltaics is the field of technology and research related to the practical
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were lowered. The equilibrium sorption data was better explained by Langmuir isotherm model suggesting that the adsorption of metal cations observed monolayer sorption pattern. Pseudo-first-order model‚ pseudo-second-order model and intraparticle diffusion model were utilised to test the sorption kinetics involved in the process. It was observed that pseudo-first-order kinetic model could better describe the
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