fem analysis of dissimilar metals on Nd:YAG laser welding ....etc

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BIOSORPTION OF METALS


SELECTION OF BIOMASS
While choosing the biomass for metal biosorption, its origin is a major factor .

Biomass can come from, activated sludge or fermentation waste from industries like those of food, diary and starch .

organisms coming from their natural habitats are good sources of biomass.

Fast growing organisms that are specifically cultivated for biosorption purposes


TYPES OF BIOMASS

Agricultural products

Seaweed ....etc

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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

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i am looking for biosorption heavy metals ppt download. ....etc

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CONDUCTIVITY σ ,FERMI LEVEL ,
MEAN FREE PATH &
RELAXATION TIME ť
FOR TYPICAL MONO-VALENT METALS
IS SHOWN IN TABLE

The conductivity σ may be obtained experimentally .
Further we can get ť by using eqn given below
σ = ( n*Qe2 *ť )/me ---------(1)
but ť obtained may not be accurate but we will get an idea of magnitude of ť . In a monovalent metal no of free e- /m3 is equals the no of atoms /m3 . From table we find that relaxation time T is of the order of 10-14 sec .Thus we can ....etc

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which two metal can not be welded and why they can not be welded and we need the reason for that? ....etc

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AN ORGANISATIONAL STUDY AT KERALA MINERALS AND METALS LTD.
SUBMITTED BY
REMYA.S
REG.NO:2887017


INDUSTRIAY PROFILE
Industries play a significant role in almost every economy but India context it is an important as oxygen for breathing. Industrial development has been accorded great importance in Indian planning. On account of industrial development there is increase in production, employment and national income.India is the second largest growing economy in the world. This is equally applicable to the Titanium Diox ....etc

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I would highly appreciate if Im allowed to become a member of your organization ....etc

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i want to know about laser beam welding. Please provide any ppt ....etc

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METAL JOINING TECHNIQUES
1. WELDING
2. BRAZING
3. SOLDERING

BRAZING
IT IS A GROUP OF WELDING PROCESSES IN WHICH COALESCENCE IS PRODUCED BY HEATING TO SUITABLE TEMPERATURE ABOVE 8000F BUT BELOW THAT OF BARE METALS
TYPES OF BRAZING
1. TORCH BRAZING
2. FURNACE BRAZING
3. INDUCTION BRAZING
4. RESISTANCE BRAZING
EXOTHERMIC BRAZING
PROCESS IN WHICH HEAT REQUIRED TO MELT AND FLOW A COMMERCIAL FILLER METAL ALLOY IS GENERATED BY A SOLID STATE EXOTHERMIC CHEMICAL REACTION.
EXOTHERMIC P ....etc

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