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This book contains excellent written text for the students of B.Pharm. 1st Year. It covers whole syllabus prescribed by the AICTE all over the India, and new syllabus prescribed by the GBTU (Lucknow) and MMTU (Noida). This is the first book which is written according to it. It contains all the important questions of each chapter, along with important objective questions, which helps students to revise their knowledge in the subject. This book contains a complete and comprehensive material on various topics of pharmaceutical chemistry. The topics have been explained in such a simple way that students need not study any other book for this subject. Various tables are provided for important topics, apart from that flow charts are used in simple language, which looks like simplified notes.

Interactive Science Simulations Fun, interactive, research-based simulations of physical phenomena from the PhET project at the University of Colorado.

Our genetic code is translated by two super-families of modern-day enzymes. Carter's research team created and superimposed digital three-dimensional versions of the two super-families to see how their structures aligned. Carter found that all the enzymes have virtually identical cores that can be extracted to produce "molecular fossils" he calls Urzymes-Ur meaning earliest or original. The other parts, he said, are variations that were introduced later, as evolution unfolded. These two Urzymes are as close as scientists have gotten to the actual ancient enzymes that would have populated the Earth billions of years ago.

Entertaining classroom demonstration

Researchers attempting to create something reminiscent the earliest life, based on RNA instead of DNA, achieve a success.

Chris Walker looks at some of the uses of a novel amorphous diamond material.

Difference between vapor and gas The term gas refers to a substance that is in its gaseous form or a substance that has a single defined thermodynamic state at room temperature whereas a vapor refers to a substance that is a equilibrium between two phases at room temperature, namely gaseous and liquid phase. All matter on earth exists in any of the three states: solid, liquid or gaseous. 'Gas' refers to a substance in the gaseous state. Gases do not have either shape or volume. However, the term 'vapor' or 'vapour' refers to a substance in equilibrium between two phases, usually liquid and gaseous. Vapor is not a state of matter but is a specific type of gas. Gases are in a gaseous state at room temperature. The molecules in a gas can expand to occupy any available volume as there is very little inter molecular attraction. On the other hand, the molecules of a vapor gain energy and vaporize from a substance which is either a solid or liquid at room temperature. For example, steam is a water vapor that turns into water at room temperature. Oxygen, which is a gas, will still be a gas at room temperature. Gas is a state of matter. Vapor is not, it is constantly in transition. An easy way to distinguish between vapor and gas is that vapor is something that can be seen or smelled or something that settles down on the ground, while one cannot see a gas but can only smell it. However, there are some exceptions to this classification, for example, water vapor. Water vapor cannot be smelt and it does not settle down on the ground.

4 science lessons that could get a teacher fired instantly. "However, distilled water has no such minerals, and if you put it in a relatively smooth container and stick it in the microwave, the water can be heated beyond the normal boiling point and will remain perfectly still. Then, you toss in an object in and watch it explode"

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Chemistry labs with capable chemistry laboratory apparatus by A-grade Chemistry Lab Equipment Manufacturers broaden the horizons of experiential learning.