HDTenEightyP/NetNews huggingface dataset:
From: fhapgood@world.std.com (Fred Hapgood)
Subject: subterranean zero g
Organization: The World Public Access UNIX, Brookline, MA
Date: Wed, 30 Dec 1992 22:37:16 GMT


Recently Scientific American ran a short article on 'evacuated
maglev', or 'e-mag', which means putting trains in a tube,
evacuating the tube, and then using magnetic levitation to propel
them.

As rocket pioneer Robert Goddard pointed out in 1909, also in
Scientific American, the lack of both aerodynamic and mechanical
friction allows even small rates of acceleration to accumulate to
very substantial speeds.  This makes e-mag the ideal system
for long-range transportation.

For example, an automobile accelerating at 1 ft/sec/sec would
require 40 seconds to reach 60 mph.  Not many owners would
tolerate an acceleration this sluggish, but if the car could keep
going at that rate it would be travelling at 180 mph after three
minutes, and at 3600 m/h after an hour.  A train travelling at
this acceleration would cover 1 mile in 100 seconds; a hundred
miles in seventeen minutes; and ten thousand miles in just under
three hours.  It would circle the globe in 4.5 hours.  Of course
faster accelerations are available -- a powerful car accelerates
at 6 ft/sec^2 -- but there hardly seems to be any point.

An e-mag train would never spend any time running at a constant
speed -- it would always be either accelerating or decelerating.
The limits are set by passenger comfort, which presumably are
symmetrical with regards to forward and backward acceleration, so
that a train would spend the same amount of time in positive and
negative acceleration.  Since the distance between two ends of a
terrestrial diameter, as measured on the surface, is about 12,400
miles, the longest point-to-point run any e-mag train is likely
to have is 6,200 miles.  (It would take 2 hours and fifteen
minutes to reach this point and pass it at a speed of 5500 m/h.)
In theory these trains could go a lot faster, but they seem to
have run out of places to go.

However, given a great circle tube, the train could run around
the globe repeatedly, building up speed to even higher levels.
As it approached orbital velocity the passengers would feel
lighter and lighter, until, after 7.3 hours of steady 1 f/s^2
acceleration and 67,000 miles of travel the train would attain
orbital speed -- 18,000 mph.  At this point the passengers and
contents of the train would be in free fail.

In other words, it is perfectly possible in theory to build a
gravity free environment underground. One can imagine free fall
theme parks, health spas, movie sets, manufacturing facilities,
hospital units, and the like.  The problem is the upfront costs.
I guessestimate building a great circle e-mag with contemporary
technology might cost a trillion dollars.  Even if technological
improvements and advantages of scale bring that cost down by
*two* orders of magnitude, it is hard to see the facility
competing with NASA, unless the upfront costs can be offloaded
onto some other function, like defense.

Free associations invited.
From: csteele@cybernet.cse.fau.edu (Charles Steele)
Newsgroups: sci.misc
Subject: mouse traps
Date: 26 Dec 92 03:30:31 GMT
Organization: Cybernet BBS, Boca Raton, Florida

Does any know where I can find any information on making mousetrap cars?
Newsgroups: sci.misc,sci.astro,sci.geo.meteorology,sci.physics,alt.sci.planetary,sci.skeptic
From: tlode@nyx.cs.du.edu (trygve lode)
Subject: Re: Cosmos Without Gravitation
Organization: Nyx, Public Access Unix @ U. of Denver Math/CS dept.
Date: Wed, 23 Dec 92 22:16:55 GMT

In article <1h67f4INN9ks@gap.caltech.edu> carl@SOL1.GPS.CALTECH.EDU writes:
>In article <1992Dec21.195029.5158@linus.mitre.org>, m23364@mwunix (James Meritt) writes:
>
>=>17.  The pressure of light emanating from the sun should slowly change the orbits of the
>=>satellites...but this change fails to materialize; a regulating force seems to overcome
>=>this unequal light pressure on primaries and secondaries.
>=
>=I may be incorrect, but photonic/solar wind pressure seems several orders of magnitude
>=for this to have an observable effect.
>
>Even it that weren't the case, the moron has missed an important point:  Light
>pressure on the Earth in January is equal and opposite to light pressure in
>June.  The net effect of this light pressure is to increase the diameter of the
>Earth's orbit.

One minor quibble, and one that doesn't detract from your point at all, is
that the light pressure (and, for that matter, the solar wind) exerts a
force on the earth that is equal and opposite in June and January, but 
this force is not entirely radial and acts to reduce the angular momentum of
earth slightly throughout its orbit.  Thus, instantaneously, the orbit is 
minutely larger than it would be without the solar radiation, but over 
time it acts to reduce the size of the orbit (also minutely). 
Newsgroups: sci.misc,sci.astro,sci.geo.geology,sci.geo.meteorlogy,sci.physics,alt.sci.planetary
From: toms@fcs260c2.ncifcrf.gov (Tom Schneider)
Subject: Re: subterranean zero g
Organization: Frederick Cancer Research and Development Center
Date: Wed, 30 Dec 1992 23:39:23 GMT

In article <C03G65.L68@world.std.com> fhapgood@world.std.com (Fred Hapgood) writes:
>Recently Scientific American ran a short article on 'evacuated
>maglev', or 'e-mag', which means putting trains in a tube,
>evacuating the tube, and then using magnetic levitation to propel
>them.
(followed by interesting posting)

There was a movie made on this theme at least 10 years ago.  The US transport
system was by emag, and after a war (?) people were rediscovering the
connections.  Also perhaps a story by Clark?  One idea is to have the tube
drop, so that the train falls down deep into the earth and comes back up at the
destination.  Only a little extra shove would be needed to assure that it got
to the same level, more if the destination is at higher potential.  It would be
pretty bad if something went wrong, and one fell back and kept swinging
though... :-)

The nice thing about your proposed weightless facility is that it would be more
accessable than orbit.  Also, you could have any mass (whole cities??) in the
orbit.

  Tom Schneider
  National Cancer Institute
  Laboratory of Mathematical Biology
  Frederick, Maryland  21702-1201
  toms@ncifcrf.gov
Newsgroups: sci.chem
From: buxton@whitewater.chem.wisc.edu (buxton)
Subject: Home Solvent for Silly Putty
Organization: Physical Sciences Lab, UW-Madison
Date: Wed, 30 Dec 92 00:58:05 GMT

My niece managed to rub quite a bit of silly putty into our carpeting this  
Christmas, and I was wondering if anyone had any experience with removing  
this stuff from carpeting. 
Eric
Xref: sparky sci.chem:5619 rec.models.scale:721
From: amillar@netcom.com (Alan Millar)
Newsgroups: sci.chem,rec.models.scale
Subject: Recommendations on glue for PETE plastic?
Date: 1 Jan 93 23:16:25 GMT
Organization: The Bolis Group, San Jose, CA

I am making a model, and I would like to use the plastic from the
common U.S. 2-liter soft drink bottles.  I chose this plastic because 
it is so freely available.  The label identifies the plastic as "PETE".

Can anyone tell me what this plastic is, and what a good glue for it
would be?  Typical model cement for polystyrene plastic doesn't stick
to it and just peels off.  Other glues I've tried, including epoxy, do
mostly the same.  Any suggestions?  Thanks.

- Alan
-- 
----                                                     ,,,,  
Alan Millar       amillar@bolis.SF-Bay.org            __oo  \  
                                                        =___/  
But Moses said "Oh, Lord, please send someone else to do it." -Exo. 4:13
Newsgroups: sci.chem.organomet,sci.chem
From: saj@chinet.chi.il.us (Stephen Jacobs)
Subject: Re: simple way to measure reducing agent strength?
Summary: Mild oxidants are good for titrating reductants
Keywords: iodine
Organization: Chinet - Public Access UNIX
Date: Mon, 21 Dec 1992 15:05:59 GMT

Iodine is a good mild oxidant for titrating reducing solutions to see if they
are up to strength (a bit of soluble starch can be used as an indicator).
Another approach would be to add an excess of a mild oxidant (perhaps
dipyridyl disulfide--that's pretty mild) and back-titrate.

                                 Steve
Newsgroups: sci.chem.organomet,sci.chem
From: ns14@crux3.crux2.cit.cornell.edu (Nathan Otto Siemers)
Subject: Re: simple way to measure reducing agent strength?
Organization: Department of Chemistry, Cornell Univ.
Date: 22 Dec 92 16:26:47

>>>>> On Mon, 21 Dec 1992 15:05:59 GMT, saj@chinet.chi.il.us (Stephen Jacobs) said:

 Stephen> Iodine is a good mild oxidant for titrating reducing
 Stephen> solutions to see if they are up to strength (a bit of
 Stephen> soluble starch can be used as an indicator).  Another
 Stephen> approach would be to add an excess of a mild oxidant
 Stephen> (perhaps dipyridyl disulfide--that's pretty mild) and


	ucky poo


--
--
/  | / /__|  /  /---/ /__| /  | /    nathan@chemres.tn.cornell.edu
Newsgroups: sci.chem.organomet
From: kafc6@syma.sussex.ac.uk (Kenneth Seddon)
Subject: Cross-postings
Organization: University of Sussex
X-Newsreader: Tin 1.1 PL5
Date: Wed, 30 Dec 1992 21:24:59 GMT

Just a general point; there is little or no point
in having a specialized newsgroup in organometallics
if specialized questions are cross-posted to sci.chem!

So, as a general request, please DO NOT cross-post unless
the query is of the most general nature.

Newsgroups: sci.chem.organomet
From: ns14@crux3.crux2.cit.cornell.edu (Nathan Otto Siemers)
Subject: Re: Methylenate Ester carbonyl?
Organization: Department of Chemistry, Cornell Univ.
Date: 1 Jan 93 10:02:22

>>>>> On 31 Dec 92 14:29:03 GMT, gcook@horus.cem.msu.EDU (Greg
 Greg> Cook|xxxxxx) said: NNTP-Posting-Host: horus.cem.msu.edu

 Greg> I think I saw somewhere an organometallic reagent that will
 Greg> methylenate the carbonyl of an ester but I don't remember what
 Greg> it is.  Does Tebbe's reagent do this or is it limited to
 Greg> aldehydes and ketones?  What reagent does?

 Greg> R - C - OMe -------> R - C - OMe || ?  || O CH2

 Greg> Does it work for amide carbonyls as well?


	Tebbe's works for esters.  Don't know about amides.

	There is a  witch's brew call the Lombardo reagent that does
similar chemistry.  Actually discovered by a Japanese guy who got
jilted by history (I don't even remember his name!  :( )


	Nathan Siemers

--
--
/  | / /__|  /  /---/ /__| /  | /    nathan@chemres.tn.cornell.edu
From: gcook@horus.cem.msu.EDU (Greg Cook|xxxxxx)
Newsgroups: sci.chem.organomet
Subject: Methylenate Ester carbonyl?
Date: 31 Dec 92 14:29:03 GMT
Organization: Michigan State University
NNTP-Posting-Host: horus.cem.msu.edu

I think I saw somewhere an organometallic reagent that will methylenate the
carbonyl of an ester but I don't remember what it is.  Does Tebbe's reagent
do this or is it limited to aldehydes and ketones?  What reagent does?

      R - C - OMe     ------->     R - C - OMe
          ||             ?             ||
          O                            CH2

Does it work for amide carbonyls as well?

Thanks for your help!

     Gregory R. Cook         |  INTERNET:    gcook@horus.cem.msu.edu
 Department of Chemistry     |               cookgreg@student.msu.edu
Michigan State University    |  BITNET:      cook@msucem.BITNET
 East Lansing, MI  48824     |  COMPUSERVE:  74170,3010
Newsgroups: sci.chem.organomet
From: djs1539@cc.utah.edu (SEGAL, DAVID JAY)
Subject: Seeking psoralen tethered oligos
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: University of Utah Computer Center
Date: 24 Dec 1992 16:07 MST  

I am seeking a phosphoramidite derivative of psoralen which can be 
coupled to an oligo during synthesis.  I would appreciate any info
anyone could give me on such a beast, journal references, lab names,
companies which might sell it, etc...

Please E-MAIL your reply.

Thanks, and have a Happy Holiday!

- Dave Segal
- Biochemistry, U. of Utah
- (801) 581-3848
- CarrollLab@medschool.med.utah.edu or
  dave.segal@m.cc.utah.edu
From: karri@ee.tut.fi (Karri Tapani Palovuori)
Newsgroups: sci.chem
Subject: Re: Home Solvent for Silly Putty
Date: 30 Dec 1992 12:12:34 GMT
Organization: Tampere University of Technology
Distribution: world
NNTP-Posting-Host: sinisorsa.ee.tut.fi

In article <1992Dec30.073849.1934@mr.med.ge.com> hinz@picard.med.ge.com (David Hinz Mfg 4-6987 ~BHOSVWZ#097) writes:
>
>Oh, the liquid nitrogen should keep pretty well in the thermos bottle, if it's
>a good one, for a while anyway.  And be careful not to freeze your fingers!

And whatever you do,


                       DON'T CLOSE THE THERMOS!!!



Karri

P.S. It's quite possible that the carpet will shatter with the putty, 
     so I'd think twice before attempting... but it _might_ work, too.


Newsgroups: sci.chem
From: johnu@syma.sussex.ac.uk (John E. Upham)
Subject: RHF, UHF and ROHF: which is appropriate ?
Keywords: HF, SCF, ab initio
Organization: University of Sussex
Date: Sun, 20 Dec 1992 21:20:31 GMT

Dear All,
        Are there any rough guides (in written form or otherwise) as to
which invocation of HF SCF methods above is suitable for a particular
problem. I'm sure (well not that sure !) that given enough time I could
understand all the maths and physics required to make wise choices
myself. I would imagine there is more to it than simply
considering 'open shell'
or 'closed shell' systems. Can anyone throw any light on this please ?
My partucular interest is transition metal complexes.

 john upham


-- 
John Upham, Dept. of Chemistry, University of Reading, Berks., RG6 2AD, UK.
Email: scsupham%susssys1.rdg.ac.uk@uk.ac (BITnet), scsupham@rdg.susssys1 (Janet)
Voice:   +44 734 875123 x7441 (day), Fax: +44 734 311610
From: nick@gepard.msk.su (Ovcharenko Nickolay Yurievich)
Newsgroups: sci.chem
Subject: BEE VENOM:Who might need it in pharmacology?
Date: 23 Dec 92 18:26:42 GMT
Reply-To: nick@gepard.msk.su
Organization: GEPARD, Ltd

Dear gentlemen!
Here in Russia we are going to produce bee venom. Would you help us in finding
medical or pharmacological centers interested in long-time cooperation. If
scientists or other specialists will contact with us, it will be great.
     Sincerely  Nickolay Ovcharenko
     nick@gepard.msk.su
     fax (095)-135-70-30
From: nick@gepard.msk.su (Ovcharenko Nickolay Yurievich)
Newsgroups: sci.chem
Subject: BEE VEDOM: Use in pharmacology? Information needed.
Date: Mon, 21 Dec 92 15:36:46 +0200
Distribution: world
Organization: GEPARD, Ltd
Reply-To: nick@gepard.msk.su

Dear gentlemen!
Here in Russia we are going to produce bee vedom. Would you help us in finding
medical or pharmacological centers interested in long-time cooperation. If
scientists or other specialists will contact with us, it will be great.
     Sincerely  Nickolay Ovcharenko
     nick@gepard.msk.su
     fax (095)-135-70-30


Newsgroups: sci.chem
From: minsky@media.mit.edu (Marvin Minsky)
Subject: Re: Potassium Chloride uses?
Organization: MIT Media Laboratory
Date: Fri, 1 Jan 1993 02:19:11 GMT

In article <19473.2b430f45@ecs.umass.edu> rrooks@ecs.umass.edu (Raymond Rooks) writes:
>
>   Some strange woman came by the lab today and said that she was wanting to
>know if we had some KCl.  I am wondering why she might have wanted this salt.
>
>   She didn't look like she would have any class related reason for it,
>espically since classes are over.  Can someone enlighten me as to what she
>may have needed it for?
>
>Ray

Perhaps she is hypertensive, and heard that KCL is a good salt substitute.

Newsgroups: sci.chem
From: Norbert Mueller <K360171@alijku11.edvz.uni-linz.ac.at>
Subject: 3D file formats
X-Xxmessage-Id: <A75BD1D469016205@nmueller.chemie.uni-linz.ac.at>
X-Xxdate: Mon, 21 Dec 92 18:56:04 GMT
Organization: Johannes Kepler Univ., Inst. of Chemistry
X-Useragent: Nuntius v1.1.1d12
Date: Mon, 21 Dec 1992 18:58:45 GMT

A while ago MDL (Molecular Design) placed their MOLFILE format for
3D structures in the public domain. Can someone please refer me to
a document that explicitly states this and where the precise speci-
fications can be found ?
I also heard there is some format called CONCORD or similar which
is an upcoming standard to be used by CAS online services, based on
the MOLFILE format - does anyone have more precise information on 
that matter ?

I already posted this question once but it apparently drowned in the
noise coming from the ill-configured news-server recently.

Thanks for your help!


Norbert Mueller
Institute of Chemistry
Johannes Kepler University
A-4040 Linz
Austria 
e-mail K360171@ALIJKU11.bitnet
       K360171@EDVZ.uni-linz.ac.at
       Norbert@soft.uni-linz.ac.at
Newsgroups: sci.chem,rec.pyrotechnics
From: tony2@prefect.cc.bellcore.com (gozdz,antoni s)
Subject: Re: Glow Sticks
Organization: Bellcore, Livingston, NJ
Date: Mon, 21 Dec 92 23:21:34 GMT
Keywords: Glow

In article <1992Dec21.211520.4682@samba.oit.unc.edu> cheech@med.unc.edu (cheech@ocean.med.unc.edu (Greg Young)) writes:
>
>>
>>So far as I know the only way to get the dyes needed is to synthesize them
>>yourself.  If anyone knows otherwise, please let me know!
>>
>>  -- 007
>
>A quick check of the Aldrich catalog shows:
>
>26,419-9    9,10-Bis(phenylethynyl)anthracene        100mg     17.10
>
>D20,500-1   9,10-Diphenylanthracene                   1g       17.70
>
>The prices are a little steep, but a lot of the fluorescent materials
>are effective at very low concentrations.  The diphenyl material looks
>like the thing to play with but, given the perversity of the universe,
>it probably has a tenth the fluoresence yield.
>
>Greg
>
>

Interestingly enough, nature is not THAT perverse.
Quoting after Hanhela[1], the former has a 
Q of 0.85+-0.05 (l(max)=477, 507 nm), 
the latter's Q is 0.91+-0.08, (l(max)=412, 430 nm).
The fluorescence of these compounds is not affected by oxygen.

Tony

[1] Hanhela and Paul, Austr. J. Chem. 1984, 37, 553-9.
Newsgroups: sci.chem,sci.chem.organomet
From: cabku01@mailserv.zdv.uni-tuebingen.de (Hartwig Kuehbauch)
Subject: Any experiences with Os(CO)4-Dianions?
Summary: Simple ways for making Na2(Os(CO)4) and similar
Keywords: chemistry,osmium,dianion,synthesis
Organization: Comp. Center (ZDV) U of Tuebingen, FRG
Date: Wed, 30 Dec 1992 10:18:12 GMT

Dear Chemists out there!

I'm working on metals of the iron-group, esp. osmium and ruthenium. 

Does anyone have experience with the synthesis of dianions like Os(CO)4 or
Ru(CO)4 ? Normally we use the old method with Sodium in liquid ammonia, but
now I try to find some other --- more simple --- ways, perhaps in THF at
room temperature. It seems that 'normal' methods, like sodium or potassium
won't work --- heaven knows why! 

Any help would be greatly appreciated!

Greetings, Hartwig.

--
=============================================================================
= Hartwig Kuehbauch - University of Tuebingen - Dep. of Inorg. Chemistry II =
= (cabku01@mailserv.zdv.uni-tuebingen.de)     - Germany -                   =
=============================================================================
Newsgroups: sci.chem,sci.math,sci.physics,sci.misc,sci.research,sci.comp-aided
From: drl@vaxb.acs.unt.edu
Subject: DOE/Ames Laboratory Graduate Fellowship 1993
Organization: University of North Texas
Date: Tue, 29 Dec 1992 23:01:17 GMT


I have an application packet for a 1993 Graduate Fellowship Program
in Computational Science, administered by the DOE and Ames Laboratory.
I'm considering applying for the fellowship, and I'd appreciate some
firsthand information from other grad students who have applied for
and/or been awarded this fellowship in previous years. Mainly I'd like
to know what percentage of applicants have been awarded in the past, 
lauds/complaints of the program, etc.

Thanks in advance,
Dianna Laakso
drl@unt.edu

Newsgroups: sci.chem
From: ns14@crux3.crux2.cit.cornell.edu (Nathan Otto Siemers)
Subject: Re: Looking for AI organic synthesis program
Organization: Department of Chemistry, Cornell Univ.
	<1992Dec22.002829.10224@magnus.acs.ohio-state.edu>
Date: 22 Dec 92 16:25:25

>>>>> On Tue, 22 Dec 1992 00:28:29 GMT,
 Alan> aflorjan@magnus.acs.ohio-state.edu (Alan S Florjancic) said:
 Alan> Nntp-Posting-Host: top.magnus.acs.ohio-state.edu



 Alan> Kinda takes the fun out of an old fashioned lit. search....

 Alan> But seriously, I have not heard of a program like that,
 Alan> especially for a PC.  I could imagine such a program on a
 Alan> mainframe, but have never heard of one.  As a synthetic organic
 Alan> grad student, it sure would be helpful...




	E.J. Corey and co-workers design a program a loong time ago
now called lhasa.  (I believe the name is right).  A few months ago
someone asked about it and got a more authoritative reply.


nathan siemers

--
--
/  | / /__|  /  /---/ /__| /  | /    nathan@chemres.tn.cornell.edu
Newsgroups: sci.chem
From: aflorjan@magnus.acs.ohio-state.edu (Alan S Florjancic)
Subject: Re: Looking for AI organic synthesis program
Organization: The Ohio State University
Date: Tue, 22 Dec 1992 00:28:29 GMT



Kinda takes the fun out of an old fashioned lit. search....

But seriously, I have not heard of a program like that, especially for a PC.  I
could imagine such a program on a mainframe, but have never heard of one.  As a
synthetic organic grad student, it sure would be helpful...

Alan S. Florjancic
The Ohio State University
From: nick@gepard.msk.su (Ovcharenko Nickolay Yurievich)
Newsgroups: sci.chem
Subject: BEE VENOM:Who might need it in pharmacology
Date: Fri, 25 Dec 92 13:01:50 +0200
Distribution: world
Organization: GEPARD, Ltd
Reply-To: nick@gepard.msk.su

Dear gentlemen!
Here in Russia we are going to produce bee vedom. Would you help us in finding
medical or pharmacological centers interested in long-time cooperation. If
scientists or other specialists will contact with us, it will be great.
     Sincerely  Nickolay Ovcharenko
     nick@gepard.msk.su
     fax (095)-135-70-30


Newsgroups: sci.chem
From: cfthb@ux1.cts.eiu.edu (Howard Black)
Subject: Re: Organic Chem Experts, please help me with this!
Date: Tue, 29 Dec 1992 17:50:30 GMT
Organization: Eastern Illinois University

In article <NS14.92Dec28020829@crux2.crux2.cit.cornell.edu> ns14@crux2.crux2.cit.cornell.edu (Nathan Otto Siemers) writes:
>
>	These are esters of phthalic acid, which I think are benzene
>rings with two carboxylic acids attached to the ring.  They are often
>ortho, but need not be so.

    If they're not ortho, it's not phthalic acid.

-- 
   ******************************************************************
     Howard Black                             cfthb@ux1.cts.eiu.edu
     Department of Chemistry                  Eastern Illinois Univ. 
Newsgroups: sci.chem
From: djs1539@cc.utah.edu (SEGAL, DAVID JAY)
Subject: Seeking psoralen-oligos!
News-Software: VAX/VMS VNEWS 1.4-b1  
Organization: University of Utah Computer Center
Date:  1 Jan 1993 23:10 MST  

I posted this before in a different group, so sorry if you've seen it
before.

I am looking for a phosphoramidite derivative of psoralen, which can
be used to tether a psoralen to the end of an oligonucleotide.  If anyone
has ANY info (company names, citations in lit, labs, etc) about 
comercially available psoralen phosphoramidites, or people who have
used psoralen phosphoramidites, please E-MAIL me.

- Dave Segal
- Biochemistry, U. of Utah
dave.segal@m.cc.utah.edu
CarrollLab@medschool.med.utah.edu

PS: Or do you know how I could get more info on such a beast!

Xref: sparky sci.chem:5605 sci.bio:4724