HDTenEightyP/NetNews huggingface dataset:
From: sm@cel.co.uk (salim mehta)
Newsgroups: sci.engr
Subject: Re: halogen lamps for heating
Date: 18 Nov 92 17:39:45 GMT
Organization: Crosfield Electronics Ltd.
In-reply-to: dt89csc@brunel.ac.uk's message of 16 Nov 92 12:09:35 GMT

In article <Bxt5s0.M8@brunel.ac.uk> dt89csc@brunel.ac.uk (C S Codrington) wrote:
> 
> Does anyone out there know anything about the use of Halogen lamps for
> heating food. I want to use a Halogen lamp in a kettle instead of a
> heating element. 
> 
> Is this feasible?

Well an electric kettle uses a heating element rated at about 2KW. A halogen
lamp - or any lamp - rated at about the same power will generate exactly the
same heat. Remember that a lamp *is* a heating element - infact it gets so hot
that it glows!!

Now the bad news. Most lamps will not take kindly to operating immersed in
water, the lamp may explode, or it may just electrocute you.

Ofcourse you may be thinking of indirect heating (IR radiation) as employed
by many hotplates. This works best if the IR heats a collector surface in
contact with the object to be heated. You can't just point a lamp at a beaker
of water and expect it to boil.

> Is it cheaper?

Than what? It *is* cheaper than burning used banknotes to boil water : )
seriously though the only way to heat a given amount of water at a certain
rate is by pumping in energy. If that energy is also used to heat a kettle,
the room etc. it is not very efficient. Electric heating elements *are* very
efficient (~100%) at converting electrical energy into heat energy. A lamp
is very inefficient (~2%) at converting electrical energy into light energy.
All of the rest turns into heat.

So using IR is not going to be a good way to heat the water. A microwave is
probably the best way to heat water. The advantage here is that you don't
need to heat the vessel in which the water is contained.

--
-------------------------------------------------------------------------
Salim Mehta                             Phone :  +44 442 230000  x3450
Crosfield Electronics Ltd               Fax   :  +44 442 232301
Hemel Hempstead  HERTS HP2 7RH  UK      Email :  sm@crosfield.co.uk
-------------------------------------------------------------------------
     Alt email :  sm@cel.uucp     ...!{mcsun,uknet,uunet}!cel!sm
-------------------------------------------------------------------------
Newsgroups: sci.engr,sci.physics
From: ajackson@ernie.Princeton.EDU (Andrew William Jackson)
Subject: Re: Do scientists or engineers need this sort of program? (force lines)
Originator: news@nimaster
Organization: Princeton University
Distribution: usa
Date: Thu, 19 Nov 1992 18:50:34 GMT

In article <1992Nov18.172004.17579@husc3.harvard.edu> mlevin@husc8.harvard.edu (Michael Levin) writes:
>
>    I am wondering if scientists or engineers have any need for the
>following computer program. Suppose you wanted to figure out what
>distribution of point sources of some force (electric, magnetic,
>whatever) produce a field of a particular geometry. You would draw the
>field configuration that you wanted, give it to the program, and the
>program would tell you where (and how strong) the point sources needed
>to be in order to produce a field of that shape. This would work for
>any force type, not just the square-of-distance type of gravity and
>electromagnetic - you could enter the description of the force's
>activity with distance, so the program would be general in that sense.
>So, do engineers or physicists ever do this sort of thing? Would there
>be any use for such a program? Please reply to
>mlevin@husc8.harvard.edu.
>
>Mike Levin

Sounds like a very difficult program to write.  What happens if you
specify a field distribution that does not correspond to a possible
charge configuration?  This would be a useful program, but I do not
think it is possible to write, unless it can only compute point
charge distributions of fields produced by only a few particles.

ajackson@ernie.princeton.edu

Newsgroups: sci.engr.chem
From: alongley@cape.UWaterloo.ca (Allan Longley)
Subject: Re: Planning of Experiments
Organization: University of Waterloo
Date: Thu, 19 Nov 1992 17:39:35 GMT

In article <1992Nov18.084045.10871@abo.fi> SASPLUND@finabo.abo.fi (Staffan Asplund AT) writes:

>I tried to ask the mathematicians in sci.math.stat about experimental 
>planning, but I did get answers on a *very* theoretical level.

The staticians at this university are debating whether they are actually
engineers instead of mathematicians -- oh boy!  :-/

>1. References or comments on giving low covariance between independent 
>   variables in a testplan high priority ?

Check;  Box, Hunter and Hunter, Statistics for Experimenters, Wiley (1978)

-----------------------------------------------------------------------------
Allan Longley, University of Waterloo, Department of Chemical Engineering
e-mail: alongley@cape.uwaterloo.ca
voice: (519) 885-1211			They say ... who's they?
home: (519) 746-1498
-----------------------------------------------------------------------------

Xref: sparky sci.engr.chem:584 sci.materials:906 sci.chem:4696
From: mjohnson@cco.caltech.edu (Mary L. Johnson)
Newsgroups: sci.engr.chem,sci.materials,sci.chem
Subject: Re: Buckminster Fullerenes
Date: 18 Nov 1992 18:32:23 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: alumni.caltech.edu
Summary: Crystals

 sundermm@columbia.dsu.edu (MARC SUNDERMEYER) writes:
>
>	I have always heard of and seen the chemical structures of the new 
>Buckminster Fullerenes, but hat does the actual substance look like if you 
>were to have a handfull of it?  (Any of the types, not just C60.)

There's an article on C60 crystals in the latest Journal of Crystal
Growth (Agafonov et al, volume 123, pages 366-372):  C60 grown
from n-hexane forms decagonal (10-sided) columns with hollow centers.

-- Dr. Mary L. Johnson
mjohnson@alumni.cco.caltech.edu
Newsgroups: sci.engr.chem,sci.materials,sci.chem
From: tyadav@athena.mit.edu (Tapesh Yadav)
Subject: Re: Buckminster Fullerenes
Organization: Massachvsetts Institvte of Technology
Date: Sun, 15 Nov 1992 16:39:55 GMT

===========================
 sundermm@columbia.dsu.edu (MARC SUNDERMEYER) writes:
>
>	I have always heard of and seen the chemical structures of the new 
>Buckminster Fullerenes, but hat does the actual substance look like if you 
>were to have a handfull of it?  (Any of the types, not just C60.)

 Fullerenes have very interesting (crystal) structures.

 Buckminsterfullerene (C60) looks yellow as a film. In solution it 
 is lilac (beautiful to watch :) ). Different temperature/pressure
 treatments make the appearance of solid C60 change. 
 I have not seen a big C60 crystal, first hand. But, I am told that
 small crystals, made using sublimation and annealing, show hexagonal
 faces; but not the truncated icosahedron.

 Other fullerenes have been difficult to prepare in large quantities.
 C70 can be made in large quantities - atleast here at MIT. It appears
 (dark) red in solution. The solid film is redish pink (a friend of
 mine says - com'on, its pink, can't you see; well, pink is her favorite
 color.) The solid seems to form amorphous form much more easily. There 
 are reports of crystalline forms.

 Bucky tubes, as synthesized, look like broken tree stem. With hard/dark 
 bark outside and tubes packed in - not much orientation tho.

 Latest are bucky onions. See latest Nature for more.

T.Y.
----
tyadav@athena.mit.edu
Newsgroups: sci.engr.chem
From: SASPLUND@finabo.abo.fi (Staffan Asplund AT)
Subject: Planning of Experiments
Organization: Abo Akademi University, Finland
Date: Wed, 18 Nov 1992 08:40:45 GMT
X-News-Reader: VMS NEWS 1.23


Crossposted to sci.engr.chem  and sci.engr.control


Hello Engineers,

I tried to ask the mathematicians in sci.math.stat about experimental 
planning, but I did get answers on a *very* theoretical level.

I would like to use a test plan optimized so that the covariance 
between the variables is as low as possible, becouse I have no 
information about the nonlinear modelstructure  that will describe
the system in the best way.  What do You think about that choise?

If the modelstructure is known a good criteria is the D-critera
( Some feedback from Don Ramirez Univ of Virginia:
>The D-optimality criterion is based on the product of the
>eigenvalues of (X'X)**(-1) and is small when only one of these
>eigenvalues are small.
>	A new criterion is based on the mean standard error of a random
>test of u'b; that is the expectation over the unit sphere of a random
>linear inference. This problem has been recently solved by Charles Dunkl
> and Don Ramirez of the University of Virginia and will appear in The
>Transactions of Mathematical Software ACM. 
)


MY QUESTIONS:

1. References or comments on giving low covariance between independent 
   variables in a testplan high priority ?

2. What's Your criteria when planning tests for unknown modelstructures? 



Post or mail, whatever You prefer.
I will summarize Your comments if they are many and 
not posted to the newsgroup.

All comments appreciated,
Staffan

        
 ----------------------------------------------------------------------------
 -               Project researcher / Environmental Engineering             -   
 ----------------------------------------------------------------------------
 -  Staffan Asplund                  -              email sasplund@abo.fi   -
 -  Process Design Lab.              -              phone +358-21-654552    -
 -  Abo Akademi University           -              ph. home  921-882744    -
 -  Finland                          -              fax   +358-21-654791    -
 ----------------------------------------------------------------------------
From: miles@emx.cc.utexas.edu (Miles Abernathy)
Newsgroups: sci.engr.chem
Subject: Re: Buckminster Fullerenes
Date: 18 Nov 92 22:52:19 GMT
Organization: University of Texas
X-UserAgent: Nuntius v1.1.1d10
X-XXMessage-ID: <A73023813C019F31@mac39.util.utexas.edu>
X-XXDate: Wed, 18 Nov 92 16:44:49 GMT

It seems like I read awhile back that a solution of BF's is yellowish,
that was how the experimenters figured out what they had.
= = = = = = = = = = = = = = = = = = = =
  _     Miles Abernathy, N5KOB        =
 | |__  miles@emx.cc.utexas.edu       =
_|    | POB 7580, Austin TX 78713     =
\  * /  University of Texas @ Austin  =
  \/    tel. (512) 471-6521           =
= = = = = = = = = = = = = = = = = = = =
Newsgroups: sci.engr.chem,sci.materials,sci.chem
From: ladasky@netcom.com (John J. Ladasky II)
Subject: Re: Buckminster Fullerenes
Organization: Netcom - Online Communication Services (408 241-9760 guest)
Date: Wed, 18 Nov 1992 22:11:27 GMT

dlmedli@snll-arpagw.llnl.gov (medlin douglas l) writes:
>[stuff deleted]
>Also at this talk Dr. Tendaloo presented some SEM pictures and electron
>diffraction patterns of crystals of what they called conical graphite-
>these were crystals that looked like little cones- and are formed
>by the graphite sheet having a defect of a pentagonal (rather than
>hexagonal) carbon ring that causes the graphite sheet to distort into
>a cone.

	Check out an article from one of the latest issues of _Nature_
(sorry, I can't tell you the exact issue - one of my fellow employees has
snagged it from the library).  Some recent studies suggest that those
pentagonal rings you called "defects" are in fact a necessary stabilizing
factor in carbon crystalization - when there are not other compounds
present to bind the "loose ends" of planar graphite sheets.

	Another netter just recently mentioned this same article.  It 
discusses the "bucky onions" which will probably be a hot topic soon.

>Doug Medlin
>dlmedli@snll-arpagw.llnl.gov 


-- 
== John J. Ladasky II ("ii") ========================= ladasky@netcom.COM ==
"Great composers do not borrow -	     "Talking about music is like
 they steal."  - John Ladasky	      ~ -     dancing about architecture."
(quote stolen from Stravinsky, who    o o     - Elvis Costello?  Laurie
 stole it from a statement made by     >        Anderson?  Frank Zappa?
 Pablo Picasso about painting, who    \_/    -------------------------------
 stole it from...)			     "Property is theft." - Groucho
============================================================================
Xref: sparky sci.engr.chem:586 sci.materials:908 sci.chem:4698
From: kniaz@sol1.lrsm.upenn.edu (Chris Kniaz -Fischer)
Newsgroups: sci.engr.chem,sci.materials,sci.chem
Subject: Re: Buckminster Fullerenes
Date: 18 Nov 92 20:49:26 GMT
Followup-To: sci.engr.chem
Organization: Laboratory for Research on the Structure of Matter, University of Pennsylvania

In article <351@snll-arpagw.llnl.gov> dlmedli@snll-arpagw.llnl.gov (medlin douglas l) writes:

>[...] and below 90K the
>symmetry changes to a rhombohedral structure.

Van Tendaloo proposed a new structure for C60 , below 90K simple
cubic structure (Pa3 I believe) transforms into the rhombohedral str, with
the doubling of the unit cell. According to very extensive research
done at the University of Pennsylvania (using the Synchrotron Radiation
at the Brookhaven Nat. LAb, TGA-DSC, FTIR, 13C NMR and EPR) this second
phase transition is due to impurities picked up by the C60 - paper
will be published soon (sort of nail to the coffin).

>
>Apparently, the same type of transformations alsokjjoccur in C70
>as the "footballs" stop spinning: Descending frot high temperatures 
>there is a continuous transformation from FCC to rhombohedral; at
>337 K there is a shear transformation to HCP; at 276 K there is
>a transformation to another Hexagonal phase; and then at some
>lower temperature the balls stop rotating entirely and the
>structure distorts to a monoclinic phase.

Again shear tranformation rhombohedral->hcp is due to impurities.

Fullerenes , after the column are usually in form of the black (sometimes
shiny) powder. However, I saw a brown powder once!





-- 

Krzysztof Kniaz, Penn |If only God would give me some clear sign! 
LRSM ,                |Like making a large deposit in my name at a Swiss bank.
Phila, PA, 19104, USA |               Woody Allen
From: ojuarez@mtecv2.mty.itesm.mx (Octavio Juarez Espinosa)
Newsgroups: sci.engr.chem
Subject: looking info about plasticating extruders
Summary: Help
Keywords: Plasticating extruders
Date: 17 Nov 92 01:27:49 GMT
Organization: I.T.E.S.M. Campus Monterrey


Hi,

Iam very interested in to know references about palsticating extruders.
I'll appreciate if send me any info about mathemetical model of
extruders.

Thanks in advance.
Sincerely,

Octavio Juarez Espinosa

-- 
Octavio Juarez Espinosa
Gabriel Valerio 1134 
Saltillo, Coahuila    CP 25000
Mexico  email ojuarez@mtecv2.mty.itesm.mx
Xref: sparky sci.engr:2295 sci.physics:19189
From: mlevin@husc8.harvard.edu (Michael Levin)
Newsgroups: sci.engr,sci.physics
Subject: Do scientists or engineers need this sort of program? (force lines)
Date: 18 Nov 92 22:20:02 GMT
Distribution: usa
Organization: Harvard University Science Center


    I am wondering if scientists or engineers have any need for the
following computer program. Suppose you wanted to figure out what
distribution of point sources of some force (electric, magnetic,
whatever) produce a field of a particular geometry. You would draw the
field configuration that you wanted, give it to the program, and the
program would tell you where (and how strong) the point sources needed
to be in order to produce a field of that shape. This would work for
any force type, not just the square-of-distance type of gravity and
electromagnetic - you could enter the description of the force's
activity with distance, so the program would be general in that sense.
So, do engineers or physicists ever do this sort of thing? Would there
be any use for such a program? Please reply to
mlevin@husc8.harvard.edu.

Mike Levin
From: js06+@andrew.cmu.edu (Jason Lee Smith)
Newsgroups: sci.engr.mech
Subject: Mech E. Available
Date: 15 Nov 92 15:48:26 GMT
Organization: Senior, Mechanical Engineering, Carnegie Mellon, Pittsburgh, PA

I am going to be graduating from Carnegie Mellon University this spring
with a degree in Mechanical Engineering and am seeking employment. I
have a 3.0 average, and my interests include Computational Solid
Mechanics, Numerical Methods, Quality Control, and Design.

If you are interested, please contact me either via E-mail, or at the
below address:

Jason L. Smith
Box 4712
5125 Margaret Morrison 
Pittsburgh, PA
15213

I am willing to relocate.

Thank you,

	Jason L. Smith
Newsgroups: sci.engr.mech
From: wjbaird@napier.uwaterloo.ca (Warren Baird)
Subject: Data Structures for CFD unstructured grid post-processors
Organization: University of Waterloo
Date: Sat, 21 Nov 1992 16:58:30 GMT

Hi, 

I'm looking for references talking about high-level data structures to
be used in a CFD post-processor that supports unstructured grids.

Ideally, I'd like a discussion that includes object-oriented (C++)
implementation issues, but any abstract data type would be useful.

Warren


Newsgroups: sci.engr.mech,misc.books.technical
From: samittal@magnus.acs.ohio-state.edu (Samir Mittal)
Subject: Needed: Info regarding mech. engg. book clubs
Keywords: mechanical, engineering, book-club
Organization: The Ohio State University
Distribution: usa
Date: Sat, 21 Nov 1992 13:15:32 GMT


Hi:

I am looking for book clubs in the area of mechanical 
engineering that can provide me with texts at reduced
prices. I know of the McGraw-Hill book club but could not
find any interesting books in the initial selection they
offered. Is it worthwhile joining the book club? I am basically
interested in areas relating to system dynamics and controls.

Please email to me. If necessary, I would sumarize and post on the
net.

Thanks

samir mittal
samittal@magnus.acs.ohio-state.edu
 


Newsgroups: sci.engr.mech
From: srabo@csws19.ic.sunysb.edu (Sebastian Rabo)
Subject: TEST!
Keywords: TEST
Organization: State University of New York at Stony Brook
Distribution: usa
Date: Wed, 18 Nov 1992 20:55:54 GMT


This is a test.

Newsgroups: sci.engr.mech
From: edmoore@vcd.hp.com (Ed Moore)
Subject: VSA tolerance analysis software
Date: Mon, 23 Nov 1992 21:36:37 GMT
Organization: Hewlett-Packard VCD
X-Newsreader: TIN [version 1.1.4 PL6]

I just finished a class on the use of VSA (Variation Simulation Analysis).
VSA, from Applied Computer Solutions, performs 3D statistical tolerance
analysis of mechanical assemblies.  I'd like to make contact with other VSA
users.

My impression of VSA: the technology seems like FEA as I knew it in 1972.  The
user interface seems like FEA in 1980.  But it's the only game in town (ie, the
only 3D statistical tolerance software we know of).

Ed Moore - edmoore@vcd.hp.com
Hewlett-Packard
Vancouver, WA
Newsgroups: sci.engr.mech,sci.comp-aided
From: bross@splatter.nas.nasa.gov (Wilson S. Ross)
Subject: Re: OPTIMIZATION SOFTWARE
Keywords: optimization, constrained, nonlinear
Organization: NAS Program, NASA Ames Research Center, Moffett Field, CA
Date: Wed, 18 Nov 92 02:07:30 GMT

pkbhatti@kopth004.delcoelect.com (Pardeep K. Bhatti) writes:
>I am looking for information on public domain or commercially
>available OPTIMIZATION software packages to solve constrained
>nonlinear problems? I am interested in those that use gradient
>based search techniques.


2 places to look (from other postings):

---

There is a repository containing a wide variety of algorithms called
netlib.  You can get information concerning netlib by  sending a
message to netlib@research.att.com with the subject, send index.

---

Welcome to statlib, a system for distribution of statistical software
by electronic mail.  This index is the reply you'll get to:
        mail statlib@lib.stat.cmu.edu
        send index

...
The software which makes Statlib work is a (minor) modification of the
netlib software.  Netlib (netlib@research.att.com) distributes a great
deal of quality mathematical software.  You might want to send mail to
netlib and ask for their index.
From: don@ocf.berkeley.edu (Don Bromley)
Newsgroups: sci.engr.mech
Subject: Summer Jobs in California
Followup-To: sci.engr.mech
Date: 22 Nov 1992 04:15:50 GMT
Organization: U.C. Berkeley Open Computing Facility
Distribution: usa
NNTP-Posting-Host: sandstorm.berkeley.edu
Summary: Jobs Wanted!



I'm a sophomore at UC Berkeley majoring in mechanical engineering.  I'm
interested in getting a summer job/internship in the engineering field.
A job in California would be preferable, but I'd be interested in 
knowing about available jobs anywhere on the west coast.  If you know
of any employers who might be interested in hiring a student plese
let me know.  Thanks.

					-Don Bromley
					don@ocf.berkeley.edu

Newsgroups: sci.engr.mech
From: ayoub@globey.cs.wisc.edu (Nabil Ayoub)
Subject: Re: KIVA and KIVA-2 CFD software
Reply-To: ayoub@erctitan.me.wisc.edu
Organization: University of Wisconsin, Madison
Date: Thu, 19 Nov 1992 10:44:16 GMT

In article <1090@bdrc.bdrc.bd.com> ghandhi@bdrc.bd.com (Jamshed Ghandhi) writes:
>Kiva II and Kiva were written by Peter O'Rourke et al at Los Alamos NL. 
>They are the  ones distributing the source code  etc.
>
>jamshed b. ghandhi--

Indeed, KIVA is written at LANL. The authors are reachable by email too.

A. Amsden -----> aaa@lanl.gov
P. O'Rourke ---> pjor@lanl.gov
T. Butler -----> tdbutler@lanl.gov

Nabil

          .-------------------------------------------------------------.
         /  Nabil Ayoub                        ____/   __  /    ____/  /
        /  Engine Research Center             /       /   /    /      /
       /  Dept. of Mechanical Engineering    ___/    __  /    /      /
      /  University of Wisconsin-Madison    /       /   |    /      /
     /  Email:ayoub@erctitan.me.wisc.edu  _____/ __/   _|  _____/  /
    '-------------------------------------------------------------'
From: qliu@draco.rutgers.edu
Newsgroups: sci.engr.mech
Subject: If yuo know  ...
Date: 22 Nov 92 18:22:45 GMT
Organization: Rutgers University RUCS-Newark


   
   Hi!

       Does anybody know what book is about Harmonic Gear in

       the United States ?

       Tell me the Name of the books if you know.

       Thanx a lot.

       Email: qliu@draco.rutgers.edu
Newsgroups: sci.engr.mech
From: christin@cae.wisc.edu (Christine Haas)
Subject: BioMechanical Engineering/ Institutes
Organization: U of Wisconsin-Madison College of Engineering
Date: 20 Nov 92 18:51:25 CST

HI,

Does anyone know of any BioMechanical Institutes, organizations,
etc.?  How about where to find a list of companies who hire
BioMechanical Engineers - I love the field I'm in, but I'm 
having a hard time finding companies with which to get in touch
with.

Chris.
-- 


%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%-%

Newsgroups: sci.engr.mech
From: andy@skyhawk.jsc.nasa.gov (Dr. Andy)
Subject: email address of me dept at utah state univ
Organization: MDSSC
Date: Mon, 23 Nov 1992 19:08:41 GMT


i am looking for email address of mechanical engineering dept. at utah state university

andy
From: mbg@athena.mit.edu (Miguel G Barrientos)
Newsgroups: sci.engr.mech
Subject: Graduate school information
Date: 20 Nov 92 21:17:57 GMT
Organization: Massachusetts Institute of Technology

I am currently applying to graduate schools that offer a master of science degree
in mechanical engineering. Since my fields of interest are design, in general, and 
appropriate technology, in particular, I would really appreciate it if someone 
could e-mail me the following information:

1. Top ten U.S. schools in mechanical engineering design.
2. Schools which have an appropriate technology (AT) program.
3. Addresses of faculty who are engaged in AT research.

Thank you in advance. My address is:

Miguel Barrientos
362 Memorial Drive
Cambridge, MA 02139
Phone: (617) 225-7258
e-mail: mbg@athena.mit.edu