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Materials & Chemical Engineering

- Properties of matter and its applications. Metal Production, Fabrication, Distillation, Corrosion
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Jan16-12 Greg Bernhardt
Illegal/Dangerous Activities: Explicit "how to" discussions of illegal and/or dangerous activities, or posts...
Jul31-07 05:01 PM
chemisttree
0 31,083
Hi, I am working with a scanning electron microscope with the SED and it works fine. I have tried on several...
Nov26-13 01:24 PM
nanopaxeko
2 1,870
Hi I am bit confused regarding the heating/calorific value of petrol (used for vehicle) extracted from crude oil...
Nov25-13 07:24 PM
etudiant
7 1,740
So the expression for Gibb's free energy is: dG = -SdT + VdP + μdN, Here, we see that the Gibb's free energy...
Nov24-13 04:22 PM
DrDu
4 2,440
Hi every one . I am trying to make nanocomposite and I need to solve nano Tio2 in water many paper said that it...
Nov20-13 02:48 PM
Alkim
4 1,708
I want to exchange my Au-citrate nanoparticle with two kinds of ligands :PEG-COOH and PEG-OH. Which one is suppose to...
Nov19-13 01:19 PM
Alkim
2 1,587
Does anyone know of where I can find any good free online video lectures of materials processing, environmental...
Nov16-13 02:51 PM
Barry Bonobo
0 1,447
Hi, I am trying to find out what material heat resistant washers are on a BBQ. that material looks like fiberglass and...
Nov15-13 02:37 PM
jedishrfu
2 1,855
In those days ice was transported from mountain regions to towns and cities, so that, for example, wealthy families...
Nov15-13 10:08 AM
rollingstein
15 2,482
Does any of you know about Lithium fluoride (LiF) etching/patterning? I'm wondering if I can pattern a slab of LiF...
Nov12-13 06:35 PM
etudiant
2 1,826
The chips used for surface plasmon resonance are fairly expensive. Does anyone know what nanofabrication techniques...
Nov12-13 04:02 PM
Alkim
3 1,577
Here's the thing. I want to measure the surface charge of the alginate beads synthesized in our lab. It's about 400μm...
Nov12-13 03:42 PM
Alkim
2 1,529
Is it true we don't understand well how it works (even in many system catalyst) or is it mapped to 100% accuracy...
Nov12-13 10:13 AM
kye
0 1,387
Hello to all, I am new here, with almost the same question like on this thread: ...
Nov7-13 12:19 PM
RocketSci5KN
6 1,965
Hi, I am new to the forum and would like your thoughts and idea on a project I am currently working on as a...
Nov6-13 08:03 AM
mfb
3 1,687
Hi, I'm new to this forum and I could use some help. I'm a freshman in highschool and for a school project, we have...
Nov4-13 09:02 PM
AlephZero
4 1,672
Hello, I was wondering, if you have a reactor with a recycle and purge stream, is it the case that a nonreactive...
Nov3-13 12:23 PM
Woopydalan
0 1,348
Do you know why it's important for rubber to be resilient? and does anybody have an example of an object that is made...
Nov3-13 08:29 AM
hancarruthers
2 1,444
Hello - fundamental thermo question which is puzzling me... It concerns a multiple effect evaporator with...
Oct31-13 04:05 PM
James MEng
0 1,439
how can we understand that in an isobaric system diffusion of one species can cause motion of the other...
Oct31-13 12:49 PM
mech-eng
0 1,231
how can we understand total molar concentration remains constant in a isobaric isothermal system? if it is from...
Oct31-13 10:37 AM
mech-eng
2 1,317
Other than molecular weight, what are the factors which affect the melt flow rate of thermoplastic?
Oct30-13 11:31 PM
Hyo X
1 1,486
Hello, I have two images taken of a metal sample that were snapped by a charpy impact test. The image with the...
Oct30-13 11:20 PM
Hyo X
4 2,178
Hi,all. a book(j.p holman,heat transfer 7e,chapter 11) gives C (subindex)A = (ro) subindex A= P subindex A x M...
Oct30-13 11:13 AM
Chestermiller
1 1,467
I placed some polystyrene dishes in an oven. Now, the melting temperature of this material is 240C. And I was at a...
Oct26-13 03:32 PM
UltrafastPED
1 1,379
I'm looking to replace a 6x6x12 pressure treated post with 4x4 steel tubing. I was looking at a steel handbook and...
Oct25-13 12:52 PM
nvn
16 2,415
Hello, If I have a shaft that has a section area of .0562 in. sq. and a material yield strength of 60KSI. And I...
Oct25-13 11:49 AM
nvn
12 1,990
So when osmosis between two solutions (separated by a semipermeable membrane),takes place, the solvent travels from...
Oct21-13 11:34 AM
Urmi Roy
4 1,253
Where can i get the theoretical value of MFI for common polymeric materials such as PP, PE, PS, PMMA...as reference?
Oct20-13 04:07 PM
Alkim
1 1,169
I have been looking for hours tring to find a material with these properties. Working Temperature up to 500 F Low...
Oct20-13 03:38 PM
Alkim
3 2,528
Read this quote on a major recycler's website: "During this processing, we separate ferrous materials from...
Oct19-13 12:51 PM
rollingstein
4 4,139
Hello, In my class we were talking about the design of an ammonia reactor, and there is a battle between arrhenius...
Oct18-13 03:37 PM
Borek
1 1,204
I'm doing an essay on imobilized enzymes. I need to evaluate some data i collected, to do that i need a graph that can...
Oct17-13 07:01 PM
gpmattos
0 1,421
I knew ice was slippery, but looking at a table of coefficents of friction today it seems that ice on ice yields a...
Oct17-13 12:59 PM
SongDog
3 2,231
This is more a thought experiment that I'm not completely sure I'm getting correctly... So here we go: Imagine we...
Oct16-13 04:36 AM
DrClaude
1 2,397
Can someone help me regarding a concept in gun mechanism?? In the current mechanism a part of the chemical energy of...
Oct15-13 01:40 PM
blkexp98
15 11,376
I need a recommendations on a glue to stick aluminium foil. Due to the size I need a product that can be brought in...
Oct14-13 11:25 AM
Notinuse
5 5,358
Hello, I am wondering conceptually why the maximum conversion of products is made at chemical equilibrium? I was...
Oct13-13 09:31 PM
UltrafastPED
3 2,370
I have to use this specific heat value to calculate the heat load for designing a machine as refrigerator. Could you...
Oct13-13 09:30 AM
Prin
4 1,934
Hey. I really want to know if it is possible in some way, to remove the fog created by a smoke machine. The fog...
Oct12-13 02:43 AM
Alkim
3 3,233
and if they are, to what extent?
Oct11-13 03:20 PM
Alkim
8 4,542

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