HDTenEightyP/NetNews huggingface dataset:
From: rowe@pender.ee.upenn.edu (Mickey Rowe)
Newsgroups: sci.bio
Subject: Dreams (was Re: "Falling" Asleep)
Date: 25 Jan 93 14:55:04 GMT
Organization: University of Pennsylvania

In article <106373@netnews.upenn.edu> rowe@pender.ee.upenn.edu 
     (Mickey Rowe) writes:

>In any case, Seligman and Yager surveyed a bunch of undergraduates
>here at Penn about the content of their dreams.

Whoops!  I just want to post a correction since I remembered last
night that Marty's co-author's name on that paper was Amy Yellen.
Since I'm already posting a correction, I figured I might as well try
to dig up the whole reference.  Here it is:

Seligman, M. and Yellen, A. (1987). "What is a Dream?", _Behavior
     Research and Therapy", 25(1):1-24.

The Abstract of the paper reads:

ABSTRACT:       Describes a dream theory that suggests that dreaming consists
                   of 3 elements. The theory predicts that there are 2 kinds of
                   visual imagery in dreams: one vivid, detailed, colorful,
                   large, and in the center of the visual field; and the other
                   less vivid, less detailed, less colorful, smaller, and in
                   the periphery. It is consistent with the incongruence of
                   events in dreaming, the transmogrification of images and
                   setting, and the incorporation of external intrusions. The
                   theory suggests why causality is linear in dreaming, specifies
                   the psychological differences between dreaming and waking,
                   and between REM and nonrapid eye movement (NREM) sleep, and
                   comments on the notion of ""scene'' and the ability to
                   ""control'' dream content. The theory also suggests that the
                   cognitive synthesis is the most likely place to find the
                   ""meaning'' of dream. Evidence supporting the theory is
                   presented in 2 experiments, using approximately 80
                   undergraduates who reported their dreams.


>Mickey Rowe     (rowe@pender.ee.upenn.edu)

Ibid
From: robison1@husc10.harvard.edu (Keith Robison)
Newsgroups: sci.bio
Subject: Re: rRNA (was Re: MRNA)
Date: 25 Jan 93 14:17:24 GMT
Article-I.D.: husc.robison1.727971444

rowe@pender.ee.upenn.edu (Mickey Rowe) writes:


>Does anybody know if all of these copies are *really* identical?
>Given that (in my understanding anyways) new genes arise largely from
>copies of previously existing genes, how is it that the sequences of
>the copies of the rRNA genes in _X. laevis_ don't mutate
>independently?  (I'm still close to the beginning of Futuyma's book,
>so please feel free to respond by telling me to keep reading :-)

>Mickey Rowe     (rowe@pender.ee.upenn.edu)


It's called concerted evolution.  Mechanistically, it occurs
through gene conversion.

Here's how it goes.  When chromatids pair during meiosis, recombination
normally occurs by an _exchange_ of part of the paired region.  So,
if you have:


	a-b-c-d  paired with
        e-f-g-h

you might get something out like:

       a-f-g-d   and
       e-b-c-h

But sometimes, instead of an exchange the information on one strand
displaces the information on the other (by mechanism which are still
under argument, I believe [corrections welcome]).  Thus, you
could end up with:

      a-b-c-d   and
      e-b-c-h


Because rRNA's are generally present as long tandem arrays, they
have many chances to recombine/convert, because pairing can occur
between ANY two members of the array.  Since this multiplies the
number of opportunities for conversion, conversion is observed
at a high frequency and, viola!*, all the rRNA's of a species
appear to evolve "in concert".


Keith Robison
Harvard University
Department of Cellular & Developmental Biology
Department of Genetics / HHMI

robison@biosun.harvard.edu 


* - pun not originally intended.  Too bad!
From: kw0426@shire.ac.arknet.edu
Newsgroups: sci.bio
Subject: plant tissue culture
Date: 25 Jan 1993 19:28:05 -0600
Organization: UTexas Mail-to-News Gateway
NNTP-Posting-Host: cs.utexas.edu

Hello!
This is:  kw0426@shire.ac.arknet.edu
I'm looking for fairly specific information on any recipes available
for agar suitable for plant tissue culture.  I have access to various
components, but am unsure how to combine them, or if they are suitable.
I am also open to suggestions for commecial prepared agar ideas, if someone
has had a good experience with one.
Please send any information you think might help me, or any ideas for 
where to look for information.
Thanks so much--
--Ken
From: anadeem@ampere.sci.bio (Ahmed Nadeem)
Newsgroups: sci.bio
Subject: MRI And CT-SCAN Images Of Dogs?
Date: 27 Jan 93 08:25:57 GMT
Article-I.D.: ampere.ANADEEM.93Jan27012557
Distribution: sci.bio
Organization: /home/ampere1/anadeem/.organization

Netters,
      I am currently working on a research project that involves construction 
of realistic, solid or geometric models for dogs.
      Does anyone know where I can get serial section images( MRI, CT-SCAN, 
etc ) for dogs?
                                                       Thanks,
                                                              Ahmed Nadeem
From: connolly@rabbit.cs.umass.edu (Christopher Ian Connolly)
Newsgroups: sci.bio
Subject: Re: MRNA
Date: 25 Jan 93 18:27:28 GMT
Organization: University of Massachusetts, Amherst

In article <106214@netnews.upenn.edu> barkdoll@lepomis.psych.upenn.edu (Edwin Barkdoll) writes:
>	Perhaps Chris is making a distinction (or asking for a
>distinction) between computational speed (throughput, total "bytes" of
>information...) and diversity.  Consider a cell which produces tons of
>carbonic anhydrase, which if not the fastest enzyme known certainly
>in the top 10, versus a cell which produces a highly diverse set of
>enzymes which are very slow.

Right - Or even the fact that reaction rates are temperature-dependent.

>What if many redundant copies are produced such that the total number
>of "bytes" far exceeds that in some other more diverse but pokey cell?
>What's the information being measured?

I had a problem with the word "bandwidth", which has a precise meaning
in the context of signal processing, but seems vague when applied to
DNA.  The only thing that comes to my mind as a clearly quantifiable
"bandwidth" is the rate at which purines and pyrimidines pass out of a
nucleus.  It doesn't seem like a terribly interesting quantity.  It
also ignores environmental factors.
-- 
	-	-	-	-	-	-	-
Christopher Ian Connolly			connolly@cs.umass.edu
Laboratory for Perceptual Robotics		wa2ifi
University of Massachusetts at Amherst		Amherst, MA 01003
Newsgroups: sci.bio
Subject: Re: Seeking predator-prey interaction models
From: robison1@husc9.harvard.edu (Keith Robison)
Date: 28 Jan 93 18:12:58 GMT

wij@world.std.com (William I Johnston) writes:

>I am working on high school mathematics textbooks and would
>like to learn about mathematical models for studying predator-
>prey interactions.

>Does anyone know references to books or articles that include
>such modeling, or people I might consult?

>I am searching for relatively simple equations or matrices,
>or models whose complexity can be simplified for high school
>students. It would be great if the populations studied are
>of interest to high-school aged students.

>wij@world.std.com
>William I Johnston


The Computer Recreations column in Scientific American would be a 
good place to start.  There was an article on predator-prey modeling
sometime prior to my college freshman year (1988), as I used it
for a project.  


Keith Robison
Harvard University
Department of Cellular & Developmental Biology
Department of Genetics / HHMI

robison@biosun.harvard.edu 


Newsgroups: sci.bio
From: 90dobias@cc.ensmp.fr (Philippe DOBIAS <90dobias@cc.ensmp.fr>)
Subject: Re: AI SIMPIFICATION
Organization: Ecole des Mines de Paris
Date: Thu, 21 Jan 93 17:52:45 GMT

For the last time, I'm willing to say something on the subject,
but I swear, it's the last time (oups, should I really ?)

In article <9301201813.AA05004@TIS.COM>, richard@TIS.COM (Richard Clark) writes:

[stuff deleted]

|> 	AI is the concept of allowing the program to infer its own set of
|> conclusions based on both input and output data along with its current
|> set of "rules" which it may then decide to modify, allowing it to then
|> reach a different conclusion, which then may cause further modification
|> of its "rules", etc, etc, etc... In other words; self-modifying code.

[stuff deleted]

|> 	There is *MUCH* more to it... and I've left out 99.9999% of it
|> for simplicity's sake... but I hope you get the general idea... 

Sorry, I can't say I find AI really different from Expert System. Well, if you
want, it's rather working on itself than on outer data. But then ? It cannot
really do things it wasn't meant to do: you have to grogram it to change itself
according to data. Sorry, but I don't feel I can get too enthousiastic about it,
really. Or it would sound just like an old Star Trek movie, really too old to
run for any modern movie award.

Besides, many modern Expert Systems want to learn (fix their own rules first)
before practise. It's not let to evolve all the time because programmers think
their might, were they always encounter the same errors, end up being biased
towards errors, and not acomplish their jobs properly. Much like an old dog
recovering from its training and attacking its masters.

To change one's rules is to change one altogether.

All right, this was my contribution everybody. I quit now.

-- 

	Philippe Dobias

	Ecole Nationale Supe'rieure des Mines de Paris.
	60, Boulevard St Michel
	75006 Paris, France.
From: sfm@manduca.neurobio.arizona.edu (Stephen Matheson)
Newsgroups: sci.bio
Subject: Re: Bio-electricity of the Brain
Date: 27 Jan 93 05:56:46 GMT
Organization: University of Arizona UNIX Users Group

From article <1993Jan26.215036.19365@dale.ksc.nasa.gov>,
by rramser@dale.ksc.nasa.gov (Rusty Ramser):

> (I'm assuming that by the name of this newsgroup, you
>  all are a medical and/or biology-based discussion group.
>  This looked like the most appropriate newsgroup to post
>  this question because of that.)

Oh no!  I've been sucked in!  Well, while I'm here...

> I am reading a type of sci-fi book that describes a
> certain type of psychic attack in the following way:
>   "It is a massive assault upon all neurons in
>    the brain, attempting to destroy all by a
>    massive overload of signals."

> What does this sound like to you medically-oriented
> people?

Sounds like one mean case of epilepsy.

> Would this type of attack cause any real
> physical damage to the brain or other parts of the
> body?  Would there be psychological or serious
> brain damage?

Yes.  Yes.  In some cases, anyway.  "A massive assault
upon all the neurons of the brain" sounds like a pretty
damaging seizure.

--

Steve Matheson   Program in Neuroscience   University of Arizona
sfm@neurobio.arizona.edu
From: xh841@ac.dal.ca
Newsgroups: sci.bio
Subject: help: phosphorylation site in tubulin
Date: 21 Jan 93 15:24:00 -0400
Organization: Dalhousie University, Halifax, Nova Scotia, Canada

Our lab wants to generate an antibody against phosphorylated tubulin. Does any-
one know something about the phosphorylation site(s) in tubulin? Please e-mail 
to: xh841@ac.dal.ca    or call: Hui at 902-494-6525. Thanks.

Newsgroups: sci.bio
From: Graydon H <coventry@zooid.guild.org>
Subject: adaptation of chlamydomonas D.
Organization: The Zoo of Ids
Date: Tue, 26 Jan 1993 00:48:59 GMT

hi all. I'm looking for someone who has some experience with growing algae
cultures, specifically chlamydomonas D (asexual).
I'm trying to set up a culture which will eventually adapt to a marginally
chlorinated water supply, and I'm wondering if anyone has a suggestion for the
water circulation system and/or addition of chlorine rate.
thanks so much.
 
coventry@zooid.guild.org
toronto, ON CA
(416) 461-4726
From: mt90dac@brunel.ac.uk (Del Cotter)
Newsgroups: sci.bio
Subject: What did 'Soapy Sam' Wilberforce say?
Date: 21 Jan 93 17:30:59 GMT
Organization: Brunel University, West London, UK

I have been reading accounts of Thomas Huxley's famous 1860 encounter with 
Samuel Wilberforce, but none of them say *exactly* what it was Wilberforce
said about Huxley's descent from an ape.  Anybody know?
-- 
 ',' ' ',','  |                                                  |  ',' ' ',','
   ', ,','    |       Del Cotter       mt90dac@brunel.ac.uk      |    ', ,','  
     ','      |                                                  |      ','    
Xref: sparky sci.bio:4988 sci.research:1473 sci.research.careers:1796 rec.aquaria:10425
From: will@wixer.cactus.org (Bill Staniewicz)
Newsgroups: sci.bio,sci.research,sci.research.careers,rec.aquaria
Subject: Wanted:Principal Investigator,aquatic toxicology(WA state)
Date: 26 Jan 93 17:49:25 GMT
Organization: Real/Time Communications

I would like to correspond with an individual who
would be interested in serving as a Principal Investigator
on a project based in the Washington state area. It involves
the evaluation of various toxic and carcinogenic chemicals
in aquatic animals.

This person would have a Doctorate, or equivalent relevant
experience in a key scientific discipline for toxicology/
carcinogenesis testing (e.g. toxicology, pathology, veterinary
medicine, biochemistry, chemistry).

Also, significant experience in managing large-scale aquatic
animal toxicology programs requiring all disciplines.

Please reply to me immediately via email.
-- 
Bill
will@wixer.cactus.org
From: carlson@cs.umass.edu (Adam Carlson)
Newsgroups: sci.bio
Subject: Looking for Forest Succession Models
Keywords: Model Forest
Date: 22 Jan 93 02:07:21 GMT
Followup-To: poster
Organization: University of Massachusetts, Amherst

I have 100 to 200 years worth of forest data on species composition,
tree diameter, height, etc. for a small plot of hemlock-northern
hardwood forest in western Massachusetts.  I'd like to test a forest
succession model by comparing the model's predictions with this data.
I have run across a couple of model's that may be appropriate in the
literature, however, if anyone knows of a particularly interesting
model or if one is available on the net, please return a message.


(I'm posting for a friend who is looking for forest succession models.  In particular, does anyone know of ftp sites or other electronic archives where such information might be stored?  Please respond via email, as I don't read this group regularly.)

Adam Carlson
carlson@cs.umass.edu
From: mcg2@ns1.cc.lehigh.edu (Marc Gabriel)
Newsgroups: sci.bio
Subject: LymeNet subscriptions
Date: 25 Jan 93 22:04:31 GMT
Organization: Lehigh University


   I submitted the following announcement a few days ago to this board.
Unfortunately, due to technical difficulties, some subscription requests
submitted on Sat. (1-23) and Sun. (1-24) were not processed.  If you
subscribed and did *not* receive confirmation of your subscription from the
list server, please re-subscribe.
   Sorry for the problems.
   The first issue of the LymeNet Newsletter will appear later this week.
   Here is the original announcement...
-----------------------------------------------------------------------------
Introducing...

******************************************************************************
*                The Lyme Disease Electronic Mail Network                    *
*                               LymeNet                                      *
******************************************************************************

Lyme Disease is now the fastest growing infectious disease in the United
States.  In 10 short years, this little known bacterial infection has claimed
half a million victims and the number of new patients continues to spiral
upward with no relief in sight.  It is estimated that in 1991, 100,000
Americans contracted this dangerous disease.  If left untreated, LD can cause
permanent nerve, musculoskeletal and cardiac damage.

Unfortunately, many in the medical and political arenas have not given this
epidemic much thought.  Self appointed experts in the academic community have
declared that LD can always be cured with short courses of simple antibiotics.
However, as the number of cases rise, doctors on the front lines are
discovering that LD is more serious that previously suspected, requiring longer
treatment therapies and more complex combinations of medicines.  The battle
lines have been drawn.

And the battles continue at LD conferences, and in the various State
legislatures where insurance companies, terrified at the high cost of LD, are
attempting to short change patients.  Estimates show that the average cost of
treatment for chronic LD patients ranges from $60,000 to $100,000 per patient.

MAILING LIST:
To keep up with the latest developments, including new treatment protocols,
research news and political events, we introduce the Lyme Disease Electronic
Mail Network.  LymeNet, in association with the Lyme Disease Network of New
Jersey, Inc., with provide you with a periodic newsletter with the latest
information.  All you need is an Internet- accessible e-mail address.

INTERESTED INDIVIDUALS INCLUDE:
      * LD patients
      * Friends or family of LD patients, who may wish to forward the
        newsletter to an LD patient
      * Interested members of the medical community
      * Interested members of the press


To subscribe, send a memo to Internet address  listserv@Lehigh.EDU
In the body type:

subscribe LymeNet-L <Your Real Name>

Please send problem reports to mcg2@Lehigh.EDU.
From: sfm@manduca.neurobio.arizona.edu (Stephen Matheson)
Newsgroups: sci.bio
Subject: Re: Lorenz and Number Recognition in Birds
Date: 24 Jan 93 23:57:33 GMT
Organization: University of Arizona UNIX Users Group

From article <1ju46d$fc2@spool.mu.edu>, by johns@m.mscs.mu.edu (John Simms):

> Does anyone know where this story is?  I looked for it in "King
> Solomon's Ring" and in "On Aggression" and couldn't find it (I could
> have overlooked it).

> Also, what else is known about number recognition in animals?  How much
> "mathematics" can animals do, especially chimpanzees or gorillas?

You might look up Don Griffin and his books on animal cognition: the
most recent is _Animal Minds_ in bookstores everywhere...

--

Steve Matheson   Program in Neuroscience   University of Arizona
sfm@neurobio.arizona.edu
From: jmains@engr.latech.edu (John P. Mains)
Newsgroups: sci.bio.technology
Subject: PHOSPHENES AND MAGNETISM
Date: 24 Jan 1993 02:01:37 GMT
Organization: Louisiana Tech University
Distribution: usa
Reply-To: jmains@engr.latech.edu
NNTP-Posting-Host: vega.engr.latech.edu


Hello,

I am looking for any information linking phosphene release in the retinina to magnetic pulses.
Preferably any studies conducted on rats.
Please respond via email.

Thanx
John P. Mains
Louisiana Tech Biomedical Engineering
From: anadeem@ampere.sci.bio (Ahmed Nadeem)
Newsgroups: sci.bio.technology
Subject: Edge Detection And Segmentation Using Khoros And PV-WAVE
Date: 27 Jan 93 08:30:53 GMT
Article-I.D.: ampere.ANADEEM.93Jan27013053
Distribution: sci.bio.technology
Organization: /home/ampere1/anadeem/.organization

Netters,
        I am currently working on a research project that involves generating
solid or geometric models from MRI images. Part of the procedure will require 
me to possibly perform Thresholding & Edge Detection on my MRI images in order
to find out which pixels lie on boundaries between two different regions. 
Thus, I would like to have an Image Processing Software package that has good 
Edge Detection and Classification ( Segmentation ) modules/routines.  
        I have heard a lot about Khoros ( University Of New Mexico) and 
PV-WAVE (Precision Visuals) and was curious if other professionals or students
had any experience on how good they are for the above purposes. Suggestions 
on other software packages are also much welcome.
                                                       Thanks,
                                                              Ahmed Nadeem
From: anadeem@ampere.sci.bio (Ahmed Nadeem)
Newsgroups: sci.bio.technology
Subject: MRI And CT-SCAN Images For Dogs?
Date: 27 Jan 93 08:29:37 GMT
Article-I.D.: ampere.ANADEEM.93Jan27012937
Distribution: sci.bio.technology
Organization: /home/ampere1/anadeem/.organization

Netters,
      I am currently working on a research project that involves construction 
of realistic, solid or geometric models for dogs.
      Does anyone know where I can get serial section images( MRI, CT-SCAN, 
etc ) for dogs?
                                                       Thanks,
                                                              Ahmed Nadeem
From: crl%nbnet.donetsk.ua@relay.USSR.EU.net ("Zinkovich Igor I.")
Newsgroups: sci.bio.technology
Subject: (none)
Date: 21 Jan 93 13:51:41 GMT
Reply-To: Biotechnology Discussion List <BIOTECH%UMDD.BITNET@cmsa.Berkeley.EDU>
Distribution: inet
Organization: The Internet

----------------------------Original message----------------------------
          Dear Sir!
     I would be very grateful to You if You will post  me  the
following:
     - complete list of scientific sessions of the "FIRST  FORUM
OF YOUNG EUROPEAN RESEARCHERS"
     - instructions for preparation of abstracts
     - the other rules and regulations of your meeting
     - 5-6 application forms
     I would  be  very  thankful  if you will be able to post me
them.  We hope to get an invitation and to participate  in  your
forum.

     I look  forward  to  hearing  from  you.  Until then, my best
regards.

     Thanking You in anticipation !
     Yours sincerely,                      Jan 18, 1993
     Head of Central Research Lab
     Donetsk  Med. Inst.                Igor I. Zinkovitch
           16, Ilicha Street
           Donetsk, 340003
           Ukraine
           Tel.(0622) 951-077
           Fax (0622) 959-629
.
From: sfm@manduca.neurobio.arizona.edu (Stephen Matheson)
Newsgroups: sci.bio
Subject: Re: MRNA
Date: 21 Jan 93 04:10:55 GMT
Organization: University of Arizona UNIX Users Group

From article <105875@netnews.upenn.edu>,
by barkdoll@lepomis.psych.upenn.edu (spacesareforthefeebleminded):
> In article <1759@tdat.teradata.COM> swf@tools3teradata.com
> (Stan Friesen) writes:
>>In article <104941@netnews.upenn.edu>,
>>rowe@pender.ee.upenn.edu (Mickey Rowe) writes:

>>|> >The brain statement is based on the fact that neurons have less
>>|> >DNA per unit weight than other kinds of cells (eggs-cluding eggs
>>|> >and who knows what other special cases).  

>>|> I suspect that this is generally untrue.

>>Ah, but it is in fact exactly literally true!  All cells in a single
>>body have the *same* amount of DNA (with a few wierd exception like
>>the polytene chromosomes in the salivary glands of Drosophila).

> 	Ah, but it is in fact exactly literally false!  Class
> switching of B cells, antigen specificity selection of immunoglobulins
> and T cell receptor specifity all involve deletion and recombination
> of DNA.  Then of course most ("most" is just to hedge my bets) mature
> mammalian red blood cells have NO nuclear DNA.

First of all, I would argue that both your examples might be classified
as "weird exceptions".  More importantly, I am skeptical that the
DNA rearrangements you refer to could have any measureable effect on
the rather crude DNA-per-unit-weight measurement.

--

Steve Matheson   Program in Neuroscience   University of Arizona
sfm@neurobio.arizona.edu
Newsgroups: sci.bio
From: wij@world.std.com (William I Johnston)
Subject: Seeking predator-prey interaction models
Organization: The World Public Access UNIX, Brookline, MA
Date: Thu, 28 Jan 1993 05:11:24 GMT

I am working on high school mathematics textbooks and would
like to learn about mathematical models for studying predator-
prey interactions.

Does anyone know references to books or articles that include
such modeling, or people I might consult?

I am searching for relatively simple equations or matrices,
or models whose complexity can be simplified for high school
students. It would be great if the populations studied are
of interest to high-school aged students.

Thanks. Please email to wij@world.std.com.


-- 
wij@world.std.com
William I Johnston
P.O. Box 126
Boston MA 02117 USA