CHARACTERISATION AND SORPTION PROPERTIES TO HEAVY METALS (Cu2+, Pb2+) OF CHITOSAN COMPLEXES EXTRACTED FROM COCKROACHES OF RWANDA

ABSTRACT
Cockroaches of Rwanda are one of the most important sources of chitosan. In chitosan extraction from Cockroaches, conditions for deproteinization were: 8% NaOH at 95 ºC for 1 h and demineralization involved treatment with 6.7 % HCl at room temperature. Yield of extract products was ..... Chitin-glucan insoluble complexes in the extracted products were identified by FTIR specus ....etc

[:=Read Full Message Here=:]

This article is presented by:
Suryanarayana K.Y
Sharik Khan
Vinyas Rai M.V
Amit J Rao
Visvesvaraya Technological University
BELGAUM - 590 018


DESIGN AND FABRICATION OF PLASTIC COATING MACHINE

Introduction

Plastic products play a very important role in the modern world. The uses of plastic coated products are increasing day by day. Polyethylene, polystyrene, poly vinyl chloride are largely used in the manufac ....etc

[:=Read Full Message Here=:]

ABSTRACT
Fuel in any engine is burnt with air. Air is a mixture of gases and it contains approximately 78% nitrogen and 21% oxygen. Some of the oxygen is used to burn the fuel during the combustion process and the rest is supposed to just pass through unreacted. But when the peak temperatures are high enough for long periods of time, the nitrogen and oxygen combine to form a class of compounds called nitrogen oxides, collectively referred to as NOx. These compounds are one of the chie ....etc

[:=Read Full Message Here=:]

Submitted By:
PATEL RITESH R


1. Introduction
The production of flavor and aroma chemicals by microorganism has been recognized for over 60 years. Flavor is usually the result of the presence, within complex matrices, of many volatile and nonvolatile components Flavor is usually the result of the presence, within complex matrices, of many volatile and nonvolatile components possessing diverse chemical and physicochemical properties. Whereas the nonvolatile compounds contribute mainly to the taste the volatile ....etc

[:=Read Full Message Here=:]

1.Which one of the following drugs has little effect on beta adrenoreceptors?
(A)Epinephrine
(B)Fenoterol
(C )Isoproterenol
(D)Dopamine

2.Which one of the following drug is not useful in treating cardiac arrhythmia ?
(A)Quinidine
(B)Propranolol
(C )Digoxin
(D)Timolol

3.Which drug is used in treating acute gout ?
(A)Reserpine
(B)Ergotamine
(C )Colchicine
(D)Cocaine

4.What are the drugs used in myocardial infarctions ?
(A)Propranolol
(B)Aspirin
(C )Budesonide
(D)Both (A) and (B)

5.Which is the most ....etc

[:=Read Full Message Here=:]

A.W. BRYSON and K.A. DARDIS


Abstract

Excessive concentrations of metals in industrial effluents may adversely affect the performance of sewage purification works. Although there is existing technology for treating these effluents, it has not found wide application due to costly equipment and chemicals and the absence of sufficient space on most plants. In this paper the feasibility of removing these metals from dilute solutions by electrolytic precipitation using a particulate electrode is investiga ....etc

[:=Read Full Message Here=:]

Crystalline silicon solar cell manufacturing requires vacuum-based processing tools for many critical steps, from mono- to polycrystalline silicon growth to thin-film depositions on silicon wafers. Manufacturing efficiencies can be optimized by considering cost-of-ownership (CoO) parameters for vacuum subsystems based on dry pumps. Careful attention to vacuum systems can make a significant contribution to reduced costs, ultimately permitting profitable production of solar cells that will encourage widespread market growth.

Solar energy is r ....etc

[:=Read Full Message Here=:]

98/2014
Maximum : 100 marks
Time : 1 hour and 15 minutes

1. The microscopy of the seeds of Nux-vomica shows :
(A) Plasmodesma
(B)Calcium oxalate crystals
(C ) Starch
(D)Medullary rays

2.Anti-mitotic alkaloidal drug is :
(A) Reserpine
(B)Colchicine
(C ) Picrotoxin
(D)Quinine

3.Nitrates act as vasodilator by :
(A)Activating vascularguanylyl cyclases
(B)Activating vascularcyclic AMP
(C )Inhibiting Tyrosinekinase
(D)Acting as calcium channel blockers

4.The vaccine which contain inactivated viruses :
( ....etc

[:=Read Full Message Here=:]

Abstract
Homogeneous charge compression ignition (HCCI) is a form of internal combustion in which well-mixed fuel and oxidizer (typically air) are compressed to the point of auto-ignition. Homogeneous charge compression ignition (HCCI) engines have
the potential for high efficiencies and low pollutant emissions.By comparison with spark ignition (SI) engines, for example,HCCI engines can yield a 15-20% increase in fuel economy while emitting lower levels of oxides of nitrogen (NOx).HCCI engines can also achieve thermal eff ....etc

[:=Read Full Message Here=:]

paper battery
A paper battery is a flexible, ultra-thin energy storage and production device formed by combining carbon nanotube s with a conventional sheet of cellulose-based paper. A paper battery acts as both a high-energy battery and supercapacitor , combining two components that are separate in traditional electronics . This combination allows the battery to provide both long-term, steady power production and bursts of energy. Non-toxic, flexible paper batteries have the potential to power the next generation of elect ....etc

[:=Read Full Message Here=:]

As a chemical engineer in which method we can produce detergent powder from paddy husk............please help me


from pallavi
chemical engineer
B-tech final year student ....etc

[:=Read Full Message Here=:]