HDTenEightyP/NetNews huggingface dataset:
From: ewstroup@cc.utah.edu (ERIC W. STROUP)
Subject: Re: Wanted, physical constants of Si3N4
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: University of Utah Computer Center
Date: 11 Nov 1992 09:51 MST  

In article <1992Nov10.210417.21065@bnr.ca>, miking@bnr.ca writes...
{Could anyone supply me with physical constants of silicon nitride? The usual
{standard references (Wolfe, INSPEC, CRC) don't seem to have much related to
{this material. Thanks in advance. Mike King

Silicon nitride      Density    Elasitc Modulus  Poisson's ratio
		     3.44       304 GPa		    0.24

		     Koop Hardness    Modulus of Rupture  
		       2200		414-580 MPa

		     Electrical Resistivity    Thermal Conductivity
			>10^12  Ohm-meter	  16-33 W/m-K

		     Coefficient of Thermal Expansion    Melting Temperature
			  3.6 (C)^-1 x10^6		     ~1900 C

-Eric
****************************************************************************
Eric W. Stroup                  		Department of Bioengineering
ewstroup@cc.utah.edu                            2480 MEB, University of Utah
c-sew@math.utah.edu                             Salt Lake City, UT  84112
****************************************************************************
From: Chris Hanson <chanson@igc.apc.org>
Newsgroups: sci.materials
Date: 07 Nov 92 22:20 PST
Subject: Scandium and Osmium end-users
Nf-ID: #N:cdp:1620300001:000:327
Nf-From: cdp.UUCP!chanson    Nov  7 22:20:00 1992



I am doing some research into current uses of Scandium 
and Osmium 187.  Does anyone have information on
how these substances are used in industry and
manufacturing?  I am especially interested in
identifying end-users.

Thanks for your help.

Chris Hanson
E-mail:  chanson@igc.org
Telephone:  415-988-1155
Fax:  415-988-9209
From: ktas@finsun.csc.fi (Kimmo Taskinen)
Subject: Re: Heterojunction bandstructure calculations
Organization: Electron Physics Laboratory, Helsinki University of Technology
Date: Tue, 10 Nov 1992 07:37:53 GMT

In article <83220@ut-emx.uucp> vcm@ccwf.cc.utexas.edu (V. Chandramouli) writes:

>In article <1992Nov5.081229.2190@nntp.hut.fi> you write:
>>
>>  Howdy,
>>
>>  Does anybody know where to get simulation programs to do bandstructure
>>and carrier density calculations for hetrostructures, preferably for ones
>>containing several stacked quantum wells ? We have one written here in HUT, 
>>but it only handles one half-well, not a set of complete wells ( a super-
>>lattice) or eg. two interacting wells.
>>
>>  Thanks,
>>           Mikko Kiviranta
>>

>I am interested in your model -- can I have a copy of it ?

>For stacked quantum wells, I am aware of several papers in the 
>literature that describes how to calculate the band structure.
>If you are interested in heterostructure device simulation you should
>consult the software from Purdue University (Mark Lundstrom's group)
>called PUPHS.  This program can (I think) calculate carrier
>densities in a heterostructure.   If you need more information on 
>the contact e-mail address and bibliography please send me an
>e-mail (mouli@emx.cc.utexas.edu).

>Chandramouli.                                 mouli@emx.cc.utexas.edu
>---------------------------------------------------------------------
>Microelectronics Research Center in the University of Texas at Austin
>---------------------------------------------------------------------

If Mikko is talking about a simulation program I wrote (or anyway), I must 
say that itcan calculate structures of several heterojunctions. But in order 
to do thatyou have to recompile the program for each specific structure (and 
convergence is not obvious). 

Other facts about my program:

- It is an interactive simulation program for the conventional HEMT- or
  MODFET-structures (AlGaAs). You get the sheet carrier concentration in the 
  channel as a function of the gate voltage.

- It solves the Schroedinger's and the Poisson's equations self-
  consistently using the finite difference method described in 'Numerical 
  Recipes in C'. 

- Initial guess is very important for convergence. When program is 
  executed it fetches the initial guess from a file. Later the result of 
  previous calculation is always used as an initial guess.

- Setting parameters are: gate voltage, thickness and donor density of doped 
  AlGaAs layer, thickness of the spacer (undoped AlGaAs) layer, 
  acceptor density in substrate (GaAs) and temperature. 

- Only the two lowest subbands are considered.

- Program menus are unfortunately written in finnish.


If you are still interested, email me. I can translate the menus in english 
if you wish.


 ---------------------------------
|                   Kimmo Taskinen|
|           ktaskine@finsun.csc.fi|
|      Electron Physics Laboratory|
|Helsinki University of Technology|
|                      Otakaari 7A|
|                   SF-02150 Espoo|
|                          FINLAND|
 ---------------------------------
From: spe_pa@physik.uni-paderborn.de (Peter Alteheld)
Newsgroups: sci.materials
Subject: Schottky contacts on p-silicon ?
Date: 6 Nov 1992 15:11:41 GMT
Organization: Universitaet Paderborn
NNTP-Posting-Host: physik2.uni-paderborn.de

Some time ago, there was a discussion in this 
newsgroup about ohmic contacts on silicon.
Now I would to know the best ways to prepare 
a Schottky contact on p-type silicon (especially for 
the use deep level tansient spectroscopy).
So, is there anybody out there who has experience in 
preparing this kind of contacts ?
 			
Newsgroups: sci.materials
From: mkim@wpi.WPI.EDU (Mansig Kim)
Newsgroups: sci.materials
Subject: Re: Properties of titanium nitride
Date: 13 Nov 92 15:55:12 GMT
Distribution: sci
Organization: Worcester Polytechnic Institute
NNTP-Posting-Host: wpi.wpi.edu

In article <JAKE.92Nov11155601@nucst6.neep.wisc.edu> jake@nucst6.neep.wisc.edu (james blanchard) writes:
>
>Since there was some response to a recent request for the properties
>of silicon nitride, I thought I'd post a similar request.  Does anyone
>have any information on the properties of titanium nitride?  I'm
>particularly interested in the strength of the material (yield
>strength, rupture strength, etc.).  Any numbers and or references
>would be helpful.
>
>   Thanks,
>--
>
>   jake blanchard -- university of wisconsin - madison
>   blanchard@engr.wisc.edu  OR   jake@nucst6.neep.wisc.edu


Since we have many requests about materials properties, do we have 
ftp site or free access site that provides properties information?

I also need many materials properties. If I post news to get property
information everytime I need, it will consume lots of news resources.


Regards,

Mansig
Newsgroups: sci.materials
From: Mike King
Subject: Wanted, physical constants of Si3N4
Reply-To: miking@bnr.ca
Organization: Bell-Northern Research
Date: Tue, 10 Nov 1992 21:04:17 GMT

Could anyone supply me with physical constants of silicon nitride? The usual
standard references (Wolfe, INSPEC, CRC) don't seem to have much related to
this material. Thanks in advance. Mike King
From: cpastore@unity.ncsu.edu (Chris Pastore)
Newsgroups: sci.materials
Subject: Re: Scandium and Osmium end-users
Date: 8 Nov 92 17:13:56 GMT
Article-I.D.: ncsu.1992Nov8.171356.8073
Organization: North Carolina State University Computing Center

In article <1620300001@igc.apc.org> Chris Hanson <chanson@igc.apc.org> writes:
>
>I am doing some research into current uses of Scandium 
>and Osmium 187.  Does anyone have information on
>how these substances are used in industry and
>manufacturing?  I am especially interested in
>identifying end-users.


I am also extremely interesting uses of Sc in particular.

I have seen some evidence that even small amounts of Sc as an alloying
agent can produce very marked changes in crystal structures and
performance characteristics.

I also have seen that Sc2O3 is being used in CRT's.

More information is desired!



-- 
Chris Pastore 	       |"What have you done there?"
NC State Univ.         |G'd(w)^n never gave you a straight answer.
919 515 6572           |"An outside with an inside in it."
chris_pastore@ncsu.edu |
Newsgroups: sci.materials
From: john@aquarius.unm.edu (John Prentice)
Subject: Looking for scientific contacts in Argentina
Date: Sun, 08 Nov 92 22:06:42 GMT
Organization: Dept. of Physics & Astro, University of New Mexico, Albuquerque

I will be visiting Argentina from about 10 Jan to 10 Feb, primarily for
the purpose of climibing Aconcagua.  However, I am anticipating having
one or two weeks free after the climb, during which I hope to tour the
country a bit.  I would very much like to visit one or more universities
during that time, find out what research is going on, and make some
friends.  I don't have any contacts in Argentina however, so if you have
any suggestions for people to talk to, I would much appreciate it.  If
anyone in Argentina would be interested in helping arrange a visit to
a university, I would also much appreciate that! 

My scientific interests are fairly broad, I am currently doing research in 
quantum mechanical scattering from surfaces, computational solid mechanics, 
and constitutive modeling of solids.  I am also doing some work with the
use of symbolic algebra packages for automatic code generation and do
alot of work in supercomputing, both vector and parallel.  I would 
certainly be interested in meeting scientists working in related fields, 
but I would also be extremely interested in meeting and talking to scientists
working in other disciplines.  I am extremely curious about what research
is being carried out in Argentina and South America in general.

John
-- 
Dr. John K. Prentice                      
Quetzal Computational Associates    
3200 Carlisle N.E., Albuquerque, NM   87110-1664  USA
Phone: 505-889-4543  E-mail: quetzal@pinet.aip.org -or- jkprent@cs.sandia.gov
From: hnr@ecs.soton.ac.uk (Harvey Rutt)
Newsgroups: sci.materials
Subject: Re: JCPDS files..
Date: 11 Nov 92 17:02:14 GMT

In <1992Nov5.092446.3933@wvnvms.wvnet.edu> un025720@wvnvms.wvnet.edu writes:


>   Could someone tell me if there is a data base/ftp site available to
>access x-ray powder diffraction files?
>Thanks.
>Manjula Ibrahim

Daresbury Laboratory UK run such a database for the UK Science and
Engineering Res. Council.
There must be some US equivalent surely!
Harvey Rutt Soutrhampton UK
From: sodani@sol1.lrsm.upenn.edu (Yasuhiro Sodani -Vitek)
Newsgroups: sci.materials
Subject: Re: fatigue of materials
Date: 10 Nov 92 21:47:07 GMT
Organization: Laboratory for Research on the Structure of Matter, University of Pennsylvania
From: bart@netcom.com (Harry Bartholomew)
Subject: Re: Wanted, physical constants of Si3N4
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
X-Newsreader: Tin 1.1 PL5
Date: Wed, 11 Nov 1992 11:33:14 GMT

Except for the high temperature pyrolytic forms, the properties of
silicon nitride are extremely variable dependent on the contents of
hydrogen, oxygen, carbon (usually).
-- 
"Partly it may be due to a phenomenon known since the very dawn of spaceflight
in connection with certain pharmaceutical drugs. They induced adverse
psychological effects, including radical changes of mood and personality.
However the fact that they were prescribed by a physician militated
against the patient's chance of deducing that they were the proximate cause
of his suffering; indeed, he would be more inclined to ask for further drugs
to counteract the first, and since the whole process was extremely profitable
for all concerned save the ultimate consumer, they would be provided.
				John Brunner in "A Maze of Stars"
Newsgroups: sci.crypt
From: marc@tanda.isis.org (Marc Thibault)
Newsgroups: sci.crypt
Subject: MicroEmacs CRYPT
Date: 6 Nov 92 16:35:13 GMT
Reply-To: marc@tanda.isis.org
Organization: Thibault & Friends


        Is anyone out there familiar with MicroEmacs' CRYPT feature?
        Specifically, how secure is it? Does it use a recogniseably
        robust algorithm?

        Thanks,
                Marc

---
 Marc Thibault        |  Consulting Systems Analyst  |  The PC: Colt '45
 marc@tanda.isis.org  |  R.R.1, Oxford Mills,        |  of the information
 CIS:71441,2226       |  Ontario, Canada  K0G 1S0    |   frontier
 NC FreeNet: aa185    |                              |

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: 2.0

mQBNAiqxYTkAAAECALfeHYp0yC80s1ScFvJSpj5eSCAO+hihtneFrrn+vuEcSavh
AAUwpIUGyV2N8n+lFTPnnLc42Ms+c8PJUPYKVI8ABRG0I01hcmMgVGhpYmF1bHQg
PG1hcmNAdGFuZGEuaXNpcy5vcmc+
=HLnv
-----END PGP PUBLIC KEY BLOCK-----

                
Newsgroups: sci.crypt
From: slangley@constant.demon.co.uk (Simon Langley)
Subject: Re: Registering "Assault Keys"
Organization: Home
X-Newsreader: Tin 1.1 PL5
Distribution: inet
Date: Thu, 5 Nov 1992 00:34:58 GMT

C. D. Tavares (cdt@sw.stratus.com) wrote:
: 
: Just think of all the neat ways there are to "cook the books" to the world
: at large when it's officially illegal to publish news that embarrasses the 
: government...
This is very true.  I am glad we don't have your gun laws, but I do wish we
had your Freedom of Information Act.

-- 
   Simon Langley                   (preferred)   slangley@constant.demon.co.uk
   Hampstead, London
   pgp 2.0 public key available                  slangley@cix.compulink.co.uk
From: ritter@cactus.org (Terry Ritter)
Newsgroups: sci.crypt
Subject: Limits on the Use of Cryptography?
Date: 11 Nov 92 06:12:10 GMT
Article-I.D.: cactus.1992Nov11.061210.9933
Organization: Capital Area Central Texas UNIX Society, Austin, Tx


 Although the discussion of key registration has been interesting,
 it does seem a bit like shooting fish in a barrel.  Discussing the
 proposition on a computer network invokes an inherent bias in most
 readers.  So, suppose we give the issue a different environment:

    The police bust an alleged child molester, and take possession
    of his PC.  They believe that the hard drive contains a full
    database of young kids who have been *or may be* assaulted.
    That database is enciphered.

 Now, your mission, should you decide to accept it, is to defend
 cryptography to ordinary voters, congress people and newspaper
 reporters.  You also need to explain to a relative of one of those
 kids, someone who doesn't own or work with a computer, why the
 government should "allow" private cryptography which could hide
 this sort of information.

 You *could* say that cryptography does not molest children, that
 only molesters molest children.  Or you could say that if ciphers
 are outlawed, only outlaws will have ciphers, and that criminals
 would not register keys anyway.  But the district attorney might
 point out that, if the law required key registration (or even just
 the delivery of keys *after* a formal court hearing), the molester
 could at least be convicted on *that* charge, and would not be
 molesting anybody for a while.

 So what do *you* say?

 ---
 Terry Ritter   ritter@cactus.org
Newsgroups: sci.crypt
From: lwloen@rchland.vnet.ibm.com (Larry Loen)
Subject: Re: Limits on the Use of Cryptography?
Date: Thu, 12 Nov 1992 16:00:33 GMT
Reply-To: lwloen@vnet.ibm.com
Disclaimer: This posting represents the poster's views, not necessarily those of IBM
Organization: IBM Rochester

In article <1992Nov11.222615.26993@cactus.org> Terry Ritter writes:
> In <1992Nov11.152949.23374@rchland.ibm.com> lwloen@rchland.vnet.ibm.com
> (Larry Loen) writes:

>>I think if we consider the matter, legal scenarios involving
>>cryptography will fit the wall safe model rather well and we can
>>send people to jail, or torture them for their keys, or whatever the
>>social decision turns out to be without considering cryptography as
>>anything different in the decision.

> OK.  So we have one vote for including wall safes in the bill to
> require users of cryptography to reveal information after due
> process.  The District Attorney will take you out to lunch if
> *that* gets passed.

> Are we really unable to convince an ordinary legislator that this
> would be a bad law?


No, you misunderstand me.  I think there is no need for a new law
at all.  I am not a legal expert, but I think that only information
in one's own brain is exempt from involuntary surrender.  Else, why
have search warrants in the first place?

But, whatever the state of the law actually is, I don't see any
reason that cryptography requires any _special_ treatment.  It just
isn't really different than a wall safe.

We can have a separate argument about whether we should allow
search warrants at all or require any cooperation whatsoever with
the authorities under the Fifth Amendment; my only real purpose was
to demonstrate cryptography has nothing to do with the argument.

-- 
   Larry W. Loen        |  My Opinions are decidedly my own, so please
                        |  do not attribute them to my employer
From: unruh@physics.ubc.ca (William Unruh)
Newsgroups: sci.crypt
Subject: Re: New Encryption Method - a Challenge!
Date: 11 Nov 1992 04:15:19 GMT
Organization: The University of British Columbia
Distribution: world
NNTP-Posting-Host: physics.ubc.ca

Erik.Lindano@ofa123.fidonet.org writes:
> 
> I realize that it must be a lot easier to just post theoretical 
> but I thought that the experts here were knowledgeable in a 
> real, practical sense, and capable of putting their obvious 
> knowledge to actual use, that's all.  Perhaps I was mistaken.

What is your area of expertise? ( None I presume) . Now whatever it is I
presume that this posting indicateds your willingness for free to give a
few days of your time to whoever askes you to donate it. I for example
have a yard that needs raking and cutting. You will be willing I presume
from this post to give me a few hours of your time to fly here ( you pay
of course) and do it for me. Most people have better things to do with
their time than to respond to juvenile challenges posed by each and
every person that wanders in. 
Of course if I have got you wrong and you had really been intending to
pay say $100/hr to have this done for you, I do appologise. If you had
only made that clear I am sure that you would have gotten a very
different response.
The internet is a wonderful place where you can often get increadibly
valuable information and advice and solutions to problems. To berate
people for not giving you free professional advice and work ( and
decrypting stuff even when it is straightforward is work) is childish,
inconsiderate and very rude.
(And no I am not a cryptographer- I couldnt decode a straight
transposition cipher even if I was told that's what it was.)
From: tkacik@hobbes.hobbes.cs.gmr.com (Tom Tkacik)
Newsgroups: sci.crypt
Subject: Re: Registered Keys - why the need?
Date: 9 Nov 92 14:20:11 GMT
Reply-To: tkacik@hobbes.hobbes.cs.gmr.com
Organization: GM Research Labs

In article 1692@guvax.acc.georgetown.edu, hruby@guvax.acc.georgetown.edu ( writes:
> In fact, I just heard on NPR this morning that Virginia is planing on 
> buying all cars in the state older than 1981 models so as to comply 
> with the Clean Air Act.  $700 each.  
> 
> I wonder where they'll get the list of who owns those cars ...
> :-)

People bring in there old junk cars for the $700.  These are voluntary
programs.


Tom Tkacik
GM Research Labs
tkacik@hobbes.cs.gmr.com
tkacik@kyzyl.mi.org

Xref: sparky sci.crypt:4735 alt.privacy:2240 comp.org.eff.talk:7007
From: spear@ucsu.Colorado.EDU (SPEAR WILLIAM AARON)
Subject: WordPerfect encryption
Organization: University of Colorado, Boulder
Distribution: usa
Date: Thu, 5 Nov 1992 17:42:23 GMT

Does anyone know how to get the password for an encrypted WordPerfect
file?


Newsgroups: sci.crypt
From: butzerd@columbia.eng.ohio-state.edu (Dane C. Butzer)
Subject: To Larry Loen...
Organization: The Ohio State University Dept of Electrical Engineering
Distribution: usa
Date: Thu, 12 Nov 1992 03:01:53 GMT

To Larry Loen,

I tried to e-mail you a reply/some comments to one of your posts, but my
mail got bounced.  Could you e-mail me your e-mail address? (sounds like
yuppie-speak: fax me a fax of your fax # so I can fax you... :-).  The
"From" address given in the post (lwloen@rchland.vnet.ibm.com) didn't work.

Thanks,
Dane Butzer
butzerd@ee.eng.ohio-state.edu 
Newsgroups: sci.crypt
From: zeke@fasttech.com (Bohdan Tashchuk)
Newsgroups: sci.crypt
Subject: Re: A Copper Balloon
Date: 11 Nov 92 06:59:44 GMT
Article-I.D.: fasttech.1992Nov11.065944.17325
Organization: Fast Technology

In <1992Nov10.165512.2568@csi.uottawa.ca> cbbrowne@csi.uottawa.ca (Christopher Browne) writes:
>Possession of cocaine is currently
>illegal, but that has NOT stopped people from using it.  Cocaine and
>crypto aren't terribly similar in either their nature, or their
>effects.  I'd prefer them to be dealt with differently by the law, as
>well.

Be careful. Once Big Brother outlaws the use of unregistered keys, crypto
junkies will be robbing convenience stores to get the cash to buy "clean",
"untraceable" keys from dealers on street corners.
Xref: sparky sci.crypt:4553 comp.org.eff.talk:6904 alt.privacy:2172 talk.politics.guns:23876
From: unruh@physics.ubc.ca (William Unruh)
Newsgroups: sci.crypt,comp.org.eff.talk,alt.privacy,talk.politics.guns
Subject: Re: Registering "Assault Keys"
Date: 10 Nov 1992 20:22:49 GMT
Organization: The University of British Columbia
Distribution: world
NNTP-Posting-Host: physics.ubc.ca

mjp@austin.ibm.com (Michael Phelps) writes:


>In article <1992Nov10.044148.22135@netcom.com>, gurgle@netcom.com (Pete Gontier) writes:
>|> pat@rwing.UUCP (Pat Myrto) writes:
>[lots deleted]
>|> 
>|> I understand that a ban on handguns would merely be a band-aid. That
>|> doesn't change my preference.

> I'm curious.  Why not?  

Clearly you are a believer in the maxim that if a solution is not final
and complete it is not worth implimenting at all. No sane person
believes that the registring/ banning / whatever of guns would sole all
problems. Neither does medicine solve the problem of death. But even
bandaids help ( or don't yo own any of those since they aren't the
complete solution)/


> If the goal is to make society safer, clearly the problem to be addressed is
>  violent crime, of all sorts.  Banning handguns isn't gonna solve it - but
>  you already know that!

Yes and controlling peoples ability to commit violent acts is part of
the solution- not all of it, part of it.
Many of the guns used in crimes are stolen- stolen from all those law
abiding citizens who never use them. And if there are more available to
steal they are easier to steal.


> If you simply don't like handguns, fine.  Don't own one.  

I don't know about the original poster but I don't like them in your, or
other peoples hands. Like you I feel that I am infinitely responsible
and would never never misuse any gun I owned Unfortunately I do not
have the same confidence in you, or others , and am willing to give up
my utterly responsile freedom in order to help protect me from other's
irresponsibility.

> If you feel that they are just too dangerous for people to own, consider the
>  numbers - there are about 200 million handguns in the US, and about 12000 
>  firearms homicides per year, and 1400 accidental firarms deaths.  That makes
>  firearms safer than automobiles.  
> 
 Uh, hardly. divide the number of deaths by the number of times they
are used, not by the number. There are "billions" of molecules of cyanide
in the universe. That does not make them any the less dangerous when
used.