HDTenEightyP/NetNews huggingface dataset:
From: pgravel@nap.amoco.com (Philip L. Gravel)
Subject: Re: Wanted: SCADA info.
Reply-To: pgravel@nap.amoco.com (Philip L. Gravel)
Organization: Amoco Corporation
Date: Tue, 6 Oct 1992 19:21:35 GMT

In article <1992Oct5.144239.25522@julian.uwo.ca>, mlesch@syslab.csd.uwo.ca 
(Mike Esch) writes:
 
> I am trying to locate information on a communications protocol
> named SCADA.  The exact wording of the fax is "...requirements
> of the C2068 SCADA communications protocol...".

SCADA means Supervisory Control And Data Aquisition

> I am posting to this group because I believe it to be a protocol
> used by chemical companies for data exchange from the field to
> the host computer.

I would suggest that you contact either the host computer or field instrument 
vendor(s).  They ought to be able to help.

Phil

-----
Philip L. Gravel                      Internet: pgravel@nap.amoco.com
Amoco Corporation, Chicago, IL        Phone:    (312)856-3553
----------
These opinions aren't worth the paper they're written on and
certainly don't reflect those of my employer.
Newsgroups: sci.chem
From: breiner@zardoz.chem.appstate.edu (Steven Jay Breiner)
Subject: Methane production query - small scale
Organization: Appalachian State University
Date: Mon, 28 Sep 1992 09:09:14 GMT

Hello all. I am writing in search of a method for producing small amounts of
relatively pure (99% or better) methane, preferably free of water. The
methods of which I am currently aware of include,

a) Hydrolysis of a Grignard reagent (methylmagnesium halide)

b) Hydrolysis of Al C
                   4 3
c) Direct hydrogenation of carbon with a nickel catalyst at 250C

Is anyone aware of other (simpler) methods or can anyone offer specifics as
to set up, safety precautions, etc. for any (preferably (c)) of the methods
above. I'm sure I could try various things, but why reinvent the wheel? Eh?

Anyway, response by Email is preferred, but I do read this newsgroup, so
if you think this is of general interest, a post might be appropriate.

Thanks for any and all help.
					Steve Breiner

*****************************************************************************
Steve Breiner				Office Phone:	(704) 262-2964
Appalachian State University			 FAX:	(704) 262-2127
Department of Chemistry			INTERNET email:	breiner@appstate.edu
Boone, NC  28608
*****************************************************************************
-- 
*****************************************************************************
Steve Breiner				Office Phone:	(704) 262-2964
Appalachian State University			 FAX:	(704) 262-2127
Department of Chemistry			INTERNET email:	breiner@appstate.edu
From: uchpcjv@Msu.oscs.montana.edu
Newsgroups: sci.chem
Subject: Re: adiabatic e- transfer: definition?
Date: 29 Sep 92 06:28:11 GMT
Article-I.D.: Msu.0096150E.201E9900
Reply-To: uchpcjv@Msu.oscs.montana.edu
Organization: Montana State University

In article <1686E10A4D.FLANAGA@RICEVM1.RICE.EDU>, FLANAGA@RICEVM1.RICE.EDU (Scott Flanagan) writes:
>Does anyone know the definition of adiabatic electron transfer?  I know
>it is not the same as the thermodynamic definition of adiabicity.  If
>anyone could supply me with an explanation and/or a good introductory
>reference, I would be much obliged.
>       Scott Flanagan 

It probably means an electron transfer reaction on a single potential energy
surface.  However, due to (annoying) colloquialisms, it may have other 
meanings.  If two surfaces are EXACTLY degenerate out in "Asymptopia",
what might be termed "near-resonant charge transfer" could just as well
be called "adiabatic charge transfer".

Confused enough?  Okay;  check out J.N. Murrell, Chemical Physics Letters,
vol. 93, #6, (1982) p.521  "Adiabatic Charge Transfer".  Also, look for Casey
Hynes (i.e. J.T. Hynes) papers -- I think he does some work on these
problems.

Hope that helps.
Jim Vivian
Bozeman
From: elete@vaxc.cc.monash.edu.au
Newsgroups: sci.chem
Subject: REQ: transmission factor calculations
Date: 29 Sep 92 12:29:50 +1000
X-From: elete@vaxc.cc.monash.edu.au
X-Newsgroups: sci.physics
Followup-To: sci.chem,sci.physics

X-Date: 29 Sep 92 12:26:49 +1000
X-Organization: Computer Centre, Monash University, Australia

g'day,

i'm having trouble working out the transmission factors (or absorption or 
attenuation) for a rectangular crystal of length 4 cm, width 2.6 cm and 
thickness 1 cm, exposed to a neutron beam with incidence angles varying
from 0 to 100 degrees.

i have worked out the transmission eqaution for an infinite slab but with this
there is the problem of the transmission going to infinity when the incident
angle approaches 90 degrees.

i would appreciate any help from anyone out there who has worked out
transmission factors for a FINITE slab.
thanks in advance,

tunay
From: billw@regal.cisco.com (William )
Newsgroups: sci.chem
Subject: Re: Colloids
Date: 5 Oct 92 00:31:38
Organization: cisco Systems, Inc.
NNTP-Posting-Host: regal.cisco.com
In-reply-to: frost@qut.edu.au's message of 2 Oct 92 09:49:00 EST


    There is a problem in colloid science that puzzles me. Upon
    heating a hydrophobic sol (i.e. TiO2 in water) turns into the
    gel.  Here we have a solution turning into a solid on heating
    isn't this against the second and third laws of thermodynamics?

I don't think that it is a generic property of hydrophobic sols to
turn into a gel on heating, and I'd be real surprised if TiO2 was
one of the ones that did so.  Most gels tend to be considered
hydrophilic colloids anyway, so you are just talking about a
change of the suspended solid, not the overall substance.  I
don't think thermodynamics gets involved at all.

There are plenty of examples in cooking, especially sauces...

BillW
Newsgroups: sci.chem
From: bogdald@hubcap.clemson.edu (dariusz bogdal)
Subject: Re: organic chemistry
Organization: Clemson University
Date: Mon, 28 Sep 1992 04:31:49 GMT

dsmith@uoft02.utoledo.edu writes:

>In article <1992Sep27.185402.9516@unixg.ubc.ca>, wade@ucs.ubc.ca (Doug Wade) writes:
>> Way back in the early 70's I went to 3 national/international science fairs
>> with organic chemistry projects. Since then I have had nothing to do with
>> chemistry and only recently pulled down from the attic my piles of texts and such.
>> Looking through it brought back a bunch of memories. One thing I noticed is that
>> nomenclature seems to have changed quite a bit. My final project had to
>> do with polymerization and one of the components used was called
>> "bis-phenol A". Tried looking that up in recent books but couldn't find it.
>> What is it known as now?
>>  

Bisphenol-A is a popular compound for synthesis epoxide resins.
How to find it? I would try:

2,2-Bis(4-hydroxyphenyl)propane    or

4,4'-Isopropylidenediphenol.

Dariusz Bogdal
P
Postdoc Research Associate
Clemson University
bogdald@hubcap.clemson.edu

eR
From: bg055@cleveland.Freenet.Edu (Stewart Rowe)
Newsgroups: sci.chem
Subject: Re: alkalis, acids and chemical drain openers damage to pipes
Date: 1 Oct 1992 21:32:22 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Crystal Drano is a mixture of caustic soda and aluminum chips.
When water is added the caustic attacks the aluminum abd generates
a gas (or should I say the aluminum attacks the caustic and water)
which agitates the mixture. This is believed to improve the action.
 
Some liquid drain cleaners contain chlorinated solvents (such as
perchlor) which help dissolve grease. Not sure about liguid Drano.
Read the labels - they may give you a clue.
From: saj@chinet.chi.il.us (Stephen Jacobs)
Newsgroups: sci.chem
Subject: Re: Beeswax Synthesis
Summary: Depends what you mean
Date: 28 Sep 92 01:41:39 GMT
Organization: Chinet - Public Access UNIX

In article <1992Sep25.121017.5301@lonex.rl.af.mil> pronif@lonex.rl.af.mil (Frederick P. Proni) writes:
>Does anyone know if beeswax can be synthesized by other means than honey
>bee metabolic processes?  I've been told it can not.  
>
Well, if I made it, then it wouldn't be beeswax then, would it?
(I work with flavors, and we get real sensitized to definitions of 'natural')

Seriously, the way I remember it, beeswax is a mixture of a few high molecular
weight esters, and could be approximated as closely as you wanted, if you 
cared enough.

                                Steve        saj@chinet.chi.il.us
Organization: Chemistry, Carnegie Mellon, Pittsburgh, PA
Newsgroups: sci.chem
Date: Fri,  2 Oct 1992 09:41:40 -0400 
From: Paul Karol <pk03+@andrew.cmu.edu>
Subject: Re: natural and synthetic elem

In arguing that perhaps muonium is the lightest unstable element
(positively charged mu-meson, mass ~200 electron masses plus an
electron), it's surprising that a muonium advocate would overlook the
existence of positronium, which is unstable and 200 times lighter still.
 However, an element is supposed to be characterized by the number of
unit charges in its nucleus; an atomic nucleus is defined as being
composed of Z protons and N neutrons, collectively A nucleons.  The
neutron has Z=0 and N=1.  The muon is nothing but a heavy electron, and
the positron in positronium is an antielectron.  They should not be
referred to as atoms in the usual sense.  Muons and electrons are
leptons, not nucleons:  neutrons and protons are baryons.  Different
particle classifications.

Incidentally, chemistry of positronium has been studied since the late
1940s and positronium's lifetime during reactions is about 1000 times
shorter still than muonium's, yet the measurements use standard
fast-electronics techniques.

Paul J. Karol
Nuclear Chemist
From: schmidtg@iccgcc.decnet.ab.com
Newsgroups: sci.chem
Subject: Followup: Health Hazards from oil based paints?
Date: 30 Sep 92 00:52:19 EST



I would like to thank all those who have replied to my recent post
"Health Hazards from oil based paints?".  The symptoms I described
finally began to fade away approximately 8 days following the exposure.
Via an article in the June 24th 1991 issue of Chemical and Engineeering
News titled "Multiple Chemical Sensitivity", I found a book on the subject
titled "Chemical Exposures Low Levels and High Stakes" by Nicholas A.
Ashford and Claudia S. Miller.  I don't believe that much is known yet
about these effects.  My sensitivity to the naptha solvent must be
greater than the norm.  I spoke to someone in the technical center
at the paint company and they claimed that they have never had anyone
complain of this before.  I requested the material safety data sheet
which unfortunately had little to say about chronic hazards other
than "Intentional misuse by deliberately ingesting, concentrating
or inhaling contents may cause permanent harm or be fatal".  The symptoms
of exposure listed as "headache, drowsiness, dizziness" were consistent
with mine.  I also contacted the local poison control center.  They
had no information on long term effects as they specialize in the treatment
of acute symptoms immediately following an exposure.


Regards,


-- Greg Schmidt		schmidtg@iccgcc.decnet.ab.com
From: herbela@prism.CS.ORST.EDU (Armando Herbelin)
Newsgroups: sci.chem
Subject: Graduate Schools in Analytical/Environmental Chemistry
Date: 4 Oct 92 20:07:55 GMT
Article-I.D.: CS.1992Oct04.200755.8491
Distribution: usa
Organization: Oregon State University, Computer Science Dept.


	I am a senior chemistry student in and its about time to
	apply to graduate schools.  As the subject says, I'm interested
	in analytical or environmental-analytical chemistry.

	I have been involved in research since my sophomore year so I
	am quite sure about the my field of interest.

	The point of this posting is to get input about which schools
	would be good choices for graduate school in this field to
	supplement the information I have already gathered from 
	advertisements and the directory of graduate research.  Ideal
	responses would not only list the schools but give reasons for
	the person's choice of the schools.

	Please send responses by email to minimize use of the readnews
	bandwidth.  If people are interested in the information, I will
	try to submit a summary (I have a hard time with this unix thing).

	Armando Herbelin
	herbela@prism.cs.orst.edu
	Undergraduate Student and Research Assistant in Chemistry
Newsgroups: sci.chem
From: saj@chinet.chi.il.us (Stephen Jacobs)
Newsgroups: sci.chem
Subject: Re: Corn Oil
Date: 5 Oct 92 03:16:38 GMT
Organization: Chinet - Public Access UNIX

In article <semkx2600WB2Moz1Nu@andrew.cmu.edu> lc2b+@andrew.cmu.edu (Lawrence Curcio) writes:
>The USDA used to define grade A corn oil (I'm parphrasing by memory) as
>golden in color, and clear - without sediment. Real corn oil develops a
>sedinment on exposure to air and light. The leading brands of corn oil
>do not.
>
>Now the problem: None of the leading brands list any additives anymore.
>How do they prevent sedimentation without additives? Perhaps this is a
>change in regulations, which permits manufacturers to omit certain
>additives from corn oil lables?
>
>Any food chemists out there? Just curious.
>

I'm an organic chemist working as a troubleshooter at a food company.  I
think there are 2 things that have changed from the old days.  They center
on what's 'real' corn oil, and on exposure to air.

Any vegetable oil you see in the supermarket has been, at the very least,
filtered while cold and sparged with a relatively inert gas.  It has probably
also been treated with an acid to precipitate gummy materials.  There are
essentially no residues from these processes in the oil.  Is this 'real' oil?
I think so, but my employer pays me to keep an open mind.  If the Federal
Register says it should have a funny label tomorrow, I'll go along.

It's quite likely that the 'air' above the oil in that bottle on the shelf
is an inert gas.  Sensible precaution: who wants to buy rancid oil?  And
with the gummy materials removed and no oxygen, light won't do much to the
oil.
                                      Steve      saj@chinet.chi.il.us
and believe me, nobody else at my company authorized me to say ANYTHING, so
it really doesn't matter who I work for.
From: sabat@iccgcc.decnet.ab.com
Newsgroups: sci.chem
Subject: Testing for lead
Date: 6 Oct 92 14:25:55 EST

Is there a simple inexpensive way I could test for lead in some paint chips
from my house myself or do I need to take a sample to some paint testing
laboratory?  Thanks for your help.


Ted Sabat		sabat@iccgcc.decnet.ab.com
From: jlangfor@alsvid.une.edu.au (Joseph Langford)
Newsgroups: sci.chem
Subject: Re: Iron Pots
Date: 28 Sep 92 07:48:15 GMT
Organization: University of New England - Northern Rivers (Lismore)

From article <6ca5qB1w165w@sound.cts.com>, by markr@sound.cts.com (Mark B. Reinhold):
> I have a friend who has a bunch of pots. These are cast iron,
> and they have a bunch of black spots on them.
> 
> I thoght that these would be oxidized spots and that some sort
> of weak or strong acid would resolve this problem.
> 
> Well, it has not, and I am now looking for any or all help
 >

 
> Thanks
> Mark
 
Could this be pitting corrosion caused by bacteria??????
-- 
Joseph Langford  Internet:  jlangfor@loki.une.edu.au   Phone:  +61 66 ????????
    University of New England, Northern Rivers (Lismore) NSW Australia
Newsgroups: sci.chem
From: lachlan@dmp.csiro.au (Lachlan Cranswick)
Subject: Re: Questiona about Ammonia
Organization: CSIRO Division of Mineral Products, Melbourne, AUSTRALIA
Date: Sat, 26 Sep 1992 05:32:36 GMT


>Suresh Thennarangam - Research Scholar (suresh@argon.iss.nus.sg) wrote:
>: Is Ammonia inert at room temperature ? What is it's effect on the human ?
>: Is it poisonous or lethal ?
>: 
>: I poked a hole in my refridgerator and punctured the ammonia conduit ...
>: and now I have a slight headache. 
>: 

>  Come on....we chemistry students get to smell lots of
>ammonia during our lab sessions.
>  Of course lots of ammonia ( I'm talking about continuous 
>inhale of concentrated ammonia ) is harmful.  Otherwise,
>just a bit of ammonia should not be that bad. ( unless you are
>alergic to ammonia )


I got a good whiff of ammonia from a Magnesium complex
the other day.  Did make me a bit dizzy for a few
hours but it cleaned up my sinuses.

On the above however, Ammonia is highly toxic.
(refer Merck index)  Though if you still
alive to post a query on whether you will live or not,
I don't think you got a toxic dose.

The biochemistry of Ammonia toxicity is quite interesting.

Not everyting is known but it can penetrate the blood-brain barrier
and other  membranes to interfer with amino-acid synthesis and
other biochemical pathways.  One way it can effect the brain
and lead to possible brain damage is it reacts with a-ketoglutarate
to form glutamate.  This affects the citric acid cycle and lowers
the rate of the oxidation of glucose, the major fuel of
the brain.

I don't want to restart that UREA posting again, but it is so
toxic that the body has to go through a lot of hastle converting
it to urea so it can be safely excreted.  But about this
white stain on tiles caused by a rabbit, Lehninger - Principles
of Biochemisty (I'm not making this up) says that bird, snakes 
and lizard excrete their Nitrogen as Uric acid that forms solid
white cakes.  Though a rabbit should excrete nitrogen as urea.

If all "true" laboratory chemists breathe in ammonia as a
test of their manhood/womanhood, could this explain
why the phrase "Smart as a chemist" does not exist.
-- 
  Lachlan Cranswick  -  CSIRO             _--_|\  lachlan@dmp.CSIRO.AU
  Division of Mineral Products           /      \ tel +61 3 647 0367
  PO Box 124, Port Melbourne 3207        \_.--._/ fax +61 3 646 3223
  AUSTRALIA                                    v 
Newsgroups: sci.chem
From: feuille@sc2a.unige.ch
Subject: Infrared Signal Decomposition and Deconvolution
Organization: University of Geneva, Switzerland
Date: Mon, 5 Oct 1992 07:43:10 GMT

    I am looking for a software that woud decompose or deconvolution a
spectral signal made up by a sum of Gaussien and/or Lorentzien functions.

   Thanks in advance ......

Please Mail : 
Mr Levoir 
Institut de topologie et de dynamique des systeme (ITODYS)
University Paris 7 , France
E-Mail : levoir@jupiter.itodys.jussieu.fr
From: dadmun@maple.circa.ufl.edu
Newsgroups: sci.chem
Subject: Re: Smoke bomb
Date: 5 Oct 92 14:51:43 GMT
Reply-To: dadmun@maple.circa.ufl.edu
Organization: University of Florida - CIRCA

In article <BvD7Ew.CAJ@cmptrc.lonestar.org>, neal@cmptrc.lonestar.org (Neal Howard) writes:
>In article <1992Sep29.164843.28788@alf.uib.no> ttt@cmr.no (Tore Tjomsland) writes:
>>I want to make a small smoke bomb for outdoor
>>use. Could anyone help me, please ?
>>

Try using KNO3 + Sucrose in even proportions.  You can get KNO3 at most
drug stores or plant places.  It is a nitrogen source for plants and it
is also known as salt peter which is given to sailors or other people
who should not be sexually aroused.  Anyway, mix the salt and sugar 
together and stick a fuse in it (or something) and off it goes.  It is
kinda fun.  Start off with small portions and do it outside in an area
where you won't start the surroundings on fire.  It burns to completion.
Andy D.
From: moroney@ramblr.enet.dec.com
Newsgroups: sci.chem
Subject: Re: natural and synthetic elem
Date: 2 Oct 92 00:48:55 GMT
Organization: Digital Equipment Corporation

In article <1OCT199209283157@erich.triumf.ca>, ivan@erich.triumf.ca (Ivan D. Reid) writes...
>	Not sure I'd classify the neutron as an element.  The lightest true
>atom is muonium (Mu); with an average lifetime of 2.2 micro-seconds, it's
>pretty damn unstable too.  You can do some really neat chemistry with it :-).

But that's just essentially a funny hydrogen isotope, isn't it?

BTW, are you talking about a proton + mu-, a mu+ + e-, or mu+ + mu- ?
What kind of chemistry can you do in 2.2 uS?

-Mike
From: kr@cup.portal.com (Markus XXX Krummenacker)
Newsgroups: sci.chem
Subject: Re: 3D modelling software
Date: Sat, 26 Sep 92 00:13:09 PDT
Organization: The Portal System (TM)

On 9/21/92 hurst@hyper.hyper.com (Graham Hurst) has posted on sci.chem:

(excerpted:)

->I must say that this appraisal is at odds with what I have heard from
->others who have used it, other than the blanket complaint that
->computational chemistry is numerically demanding (and hence "slow").
->Are your judgements arrived at in comparision with other modelling
->software? I would be interested to know how you were evaluating it.
->Would you be kind enough to email details to me? (Post if you prefer,
->but that might generate more advertising! ;-)

Q.3 (9/26/92) Slower Energy Minimization
I am using the two programs HyperChem and PolyGraf on the same SGI workstation,
so I can compare their performance a little bit. Though I have not investigated
this by benchmarking, it seems to me that energy minimizations in HyperChem
regularly takes up a lot more time than on PolyGraf. Are there any efforts
at HyperChem to optimize the minimization-algorithms or is that rather low
on the priority list ?

Q.4 (9/26/92) Slower Rotation of Selection vs. Everything
Also, an intriguing phenomenon I have noticed is that in HyperChem the rotation
of the complete workspace is much smoother and more jerk-free than the rotation
of only a few (or one) selected molecule(s) while leaving the other molecules
stationary. What is the reason for this effect ? It seems to me that rotating
only a selection instead of everything should be faster and smoother, if
anything. This must be a mistake in the algorithms, because I can't see any
fundamental reason why such an effect would have to appear if there are no
programming errors.

Thank you for an answer.
Markus


------- End - of - Message -----------------------
(responsibility for my personal opinions is mine)

Richard Stallman : "The more society becomes
        information instead of material objects,
        this question of whether
        a person can copy things
        will make the difference between

        a world of universal prosperity
     or a world of constant rat race."
__________________________________________________
kr@cup.portal.com            IIIII  M   M  M   M
Markus Krummenacker            I    MM MM  MM MM
(working for                   I    M M M  M M M
 The Institute for             I    M   M  M   M
 Molecular Manufacturing)      I    M   M  M   M
                             IIIII  M   M  M   M
Newsgroups: sci.chem
From: pbays@bach.helios.nd.edu (phil bays)
Subject: Analytical Position
Organization: OUC, University of Notre Dame
Distribution: sci.chem
Date: Tue, 6 Oct 1992 13:48:57 GMT

Saint Mary's College seeks a Ph.D. analytical 
chemist at the assistant professor level.  
Responsibilities include the analytical and 
instrumental components of the curriculum as well as 
participation in the introductory courses.  Research 
with undergraduate students is encouraged; excellent 
facilities and equipment are available. The programs 
in chemistry and biological chemistry are ACS 
approved. Saint Mary's College is a Catholic college 
for women which emphasizes the liberal arts and 
seeks faculty supportive of its mission.   Applications 
from women and minority candidates are particularly 
encouraged. Saint Mary's College is an EOE.  Review 
of credentials will begin 11/15/92.  Send resume, 
transcripts, one page summaries of your teaching 
philosophy and research plans, and three letters of 
recommendation to  J. Philip Bays, Saint Mary's 
College, Notre Dame, IN  46556   
[pbays@saintmarys.edu]