6The Daily Tar HeelThursday, September 22, 1988
A little culture:
Arts
Series to be
Performing
gin
The
Seashells may aid medical, electronic technology
Editor's note: This is the first of
a new DTH feature focusing on
scientific trends that will appear on
Thursdays.
By ANDREW THOMPSON
Science Writer
Knowledge of how seashells are
formed may help in the treatment of
bone damage and in the production
of specialized crystals in the electronic
industry.
The incorporation of inert minerals
into living tissues to form a tougher
material is an impressive feat of
nature. In humans, this process of
biomineralization is used to build
bones and teeth. Bones are formed
when soft and flexible cartilage and
collagen tissue is impregnated with
the mineral calcium phosphate.
However, details of the process
remain obscure because calcium
phosphate has too complex a meta-
Health conscious? Area businesses cater to natural food needs
By KATHY PETERS
Staff Writer
College students who prefer
miso to McDonald's and
fresh fruit to french fries can
feel right at home in Chapel Hill.
Health food resources may not be
as plentiful as fast food joints, but
several area restaurants and grocery
stores cater to the natural taste.
One of the newest is Weaver
Street Market, which opened June
21 to please what manager Ruffin
Slater calls an "underserved
market." Its shelves in Carr Mill
Mall are stocked with goat's milk,
yogurt, WASA bread, sugarless
candy bars and leeks.
Near the leeks are organically
grown grapes, with a sign above
them telling customers the products
are organically grown and that the
store supports the boycott on Cali
fornia grapes, which often contain
herbicides and pesticides.
The all-natural food store is the
only full-fledged health food store in
Chapel Hill. Wellspring Grocery in
Durham and Sunrise Grocery, eight
miles away from Chapel Hill on
N.C. 86, are the closest similar
stores.
Set up as a supermarket, Weaver
Street has a seafood section, bakery,
beauty product section, a whole
shelf of vitamins and a deli that sells
fish and organic chicken. The
market will sell magazines, books
and newspapers soon, Slater says. It
also has a large variety of imported
beers and beer-brewing equipment
that its customers can rent.
Slater estimates that students
comprise 20 percent of Weaver
Street's clientele. "A lot of students
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Science Report
bolism to be studied easily.
Scientists have turned to how
seashells such as mussels are formed,
which is an analogous, though more
accessible, process. Seashells are
made from calcium carbonate, or
chalk, and it is the unique structure
of these crystals in a living animal
that is of special interest to the
scientists.
Stephen Mann and his colleagues
at the University of Bath, England,
have set up an artificial equivalent of
the initial stages of seashell biomiri- '
eralization (as reported in last week's
issue of Nature magazine).
They investigated the formation of
calcium carbonate crystals in the
presence of stearic acid. Stearic acid,
who live in dorms probably eat in
the campus dining halls," Slater
says. "Whether a student shops here
has more to do with if a student
shops for groceries."
Southern Season, in Eastgate
Shopping Center, caters to both
health food buffs and gourmets. It
carries grain and fiber products,
cheese, coffee, chocolate, wine and
other groceries. It also has a lun
cheon cafe that can serve 60 people.
Well-known by health-conscious
students are Pyewacket Restaurant,
at 431 W. Franklin St., and the Sun
shine Cafe, across the street at 454.
. Both restaurants' menus are mainly
vegetarian. 1
league
Glenn Stuart, who was moved
from Teague by the decision, called
the change inevitable but said he
preferred Teague as an all-male
residence hall. .
"If I still lived there and it was coed,
I wouldn't want to stay," he said.
Some female Teague residents said
many Teague alumni are surprised by
the coed status of the hall when they
visit UNC. But the female students
said they enjoy living in Teague, and
some have expressed a desire to stay
in the hall next year.
"The reputation of Teague has
probably calmed down a bit," Jene
Cox said. "It still feels like a big family
here, though."
The RHA reports no further
protests by students concerning the
decision, which inconvenienced them
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as part of the Performing Arts Series
also fount? in soap, is a long-chain
carbon molecule that, in this exper
iment, represented the wall of an
animal cell. Without the stearic acid,
a solution of calcium carbonate will
form cuboidal crystals known as
calcite. However, in the presence of
stearic acid the calcium carbonate
forms a differently structured crystal,
vaterite. The scientists found this was
due to the shape . of the sterate
molecule vis-a-vis the carbonate ion.
By manipulating the structure and the
properties of the stearic acid, they
could change the structure of the
crystals. In a similar fashion, mussels
determine the structure of th.e crystals
in their shells.
"This is very exciting work," said
UNC professor Miles Crenshaw, who
pioneered this type of research in
1972. "After many years of stagnation
the field has suddenly taken off."
Crenshaw, joint professor in the
Pyewacket caters to the health
conscious with foods that are low in
salt, contain no preservatives and
are made of fresh ingredients. Chefs
make the pasta and use soy oil to fry
most of the fried entrees. Most of
the entrees are vegetables; fresh sea
food dishes are the only exception.
According to manager Pam Pat
terson, one-fourth to one-third of
Pyewacket's clientele is students.
"We're just getting the students back
(for the fall semester), so it's hard to
tell," Patterson says.
Senior Carrie Serwetnyk, a
member of the women's soccer
team, is a self-proclaimed health
in a number of ways, Randolph said.
The most common protest about
the decision was over the lack of
student involvement. Teague leaders
were requested to investigate the
incidents, but when no one was found
responsible, the housing department
made the decision independently, he
said.
Although the Division of Student
Affairs plans to evaluate the new
Adler
opment Center, is acting director of
the UNC center. She is promoting the
implementation of the program
through publications, training and
research.
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departments of Dentistry and Marine
Sciences, did have some reservations
about Mann's latest work. "The basic
question is that in the initial stages
the tendency of these (super-saturated
calcium carbonate) solutions is for
them to form vaterite anyway."
If this is the case, the presence of
the sterate molecule may be less
essential than Mann reports.
Despite this criticism, Crenshaw is
optimistic about the medical and
technological applications of this
research. In fact, it is likely that
Mann's study will dovetail with
Crenshaw's own work.
This work, still at an early stage,
is an investigation of how the process
of healing damaged bone can be
promoted by artificial intervention.
The crushed bone, say from a skull
injury, will first be cut out. Then
sheets of hydrogel, an artificial
food addict. Although she eats at
Pyewacket often, she says many
other restaurants in Chapel Hill are
becoming aware of health-conscious
students.
"Even the little places like the
Hardback Cafe and the Looking
Glass Cafe have healthy food," she
says.
Serwetnyk is not a strict vegetar
ian, but she rarely eats any meat.
Dispelling the popular belief that
vegetarians and other health-food
eaters have a tough time finding
their greens, Serwetnyk says her
culinary choices aren't too limited in
Chapel Hill.
"It's just a choice. There are a lot
from page 1
status of Teague and reserves the right
to change it, Randolph said he is
worried the Teague decision set a
precedent that could result in similar
rulings in other situations.
"I hope it emphasizes one more
time the importance of getting stu
dent input before the policies are
made, making us a part of that
process," he said.
from page 1
The Principals' Executive Program
has also been training principals to
use the Paideia method since 1984,
said Robert Phay, head of the
program.
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By NANCY SZAKACS
Staff Writer
The 1988-89 Performing Arts
Series promises to offer events that
the Carolina Union describes as an
international "cultural feast."
The Ohio Ballet opens the series
Oct. 13, directed by Heinz Poll. The
focus of the group, according to Poll,
is to combine strong classical tech
nique with contemporary style.
The Broadway comedy and screen
hit, "Little Shop of Horrors," comes
Nov. 9. This wacky musical provides
ingenious plot twists and inventive
surprises with the man-eating plant
known as Audrey II. It is being staged
by Daedalus Productions.
The Chicago-based Hubbard
Street Dance Company arrives Jan.
20 for a performance that incorpo
rates the grace of ballet and the
explosive energy of jazz and rhythmic
tap.
For classical music-minded indi
viduals, the Budapest Symphony
Orchestra with Leonard Pennario
performs Feb. 13. This program
provides an evening that includes
such pieces as Khatchaturian's Con
certo for piano and orchestra, Tchai
kovsky's Symphony No. 5 in E minor
and Mendelssohn's Symphony No. 4
in A major.
Also in February, the Music The
atre Associates production of "My
One and Only" will be shown the
27th. The Chicago Tribune notes that
molecule-containing carbon ("like
jello, only stronger," Crenshaw says)
will be placed over the injury.
The hydrogel will act as a "seed"
that then can be naturally mineralized
by the calcium phosphate in the
surrounding fluid. Not only will this
quicken the healing process, but it will
also make it possible to direct where
the bone grows.
Although Crenshaw to date has
only worked in artificial conditions,
he is quick to pay homage to the sea
animals who helped. "Progress in the
field has not been made with bones
and teeth but by looking at the
process of shell formation."
Apart from the medical applica
tions, the study of biomineralization
may have an impact on the engineer
ing of specialized electronic crystals.
Because all the layers of these
crystals are oriented in a single
of opportunities in Chapel Hill to
find health foods."
She does have difficulties finding
what she wants at local grocery
stores, but now sees Weaver Street
Market as a new option.
And although Serwetnyk isn't as
strict with her diet as some, she has
fewer problems finding health foods
than she did a few years ago.
"It's a lot easier now because this
new mind-set is hurrying across
America," Serwetnyk says.
Jo Johnson, customer service
representative at American Natural
Foods Inc. on Estes Drive, has seen
that trend. "The market is growing
in that a lot of the traditional natu
ral foods are being marketed toward
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these Gershwin songs, along with the
direction and choreography of
Tommy Tune, make this perfor
mance "la creme de la creme" of music
and dancing.
"The sound of the Tokyo String
Quartet is like fine Japanese silk made
audible," is what Newsweek magazine
said about the ensemble that will
perform chamber music on March 5.
As an added bonus, Ntosake
Shang's "For Colored Girls Who
Have Considered Suicide When the
Rainbow is Enuf," a celebration of
being a black woman, will be per
formed Jan. 2 1 . The New York Times
has described the show as "extraor
dinary and wonderful."
The series of performances will be
held in Memorial Hall and season
passes for the shows are on sale.-
Season tickets for the six-show
series are $65 for UNC students, $75
for senior citizens and Union Priv
ilege card holders, and $80 for general
public admission.
Season ticket holders can purchase
seats for the bonus performance "For
Colored Girls. . ."'at $5 for UNC
students and $7 for the general public
and senior citizens. Individual tickets
for the show are $10.
For more information on cultural
festivities of the performing arts, call
the Carolina Union Box Office at 962
1449 weekdays between noon and 2
p.m.
direction, they generate a small
electrical current when pressure is
applied. The crystals are used in many
technological devices. Electroactive
sensors, which measure the stress in
constructions, use the crystals to
detect any undue change in pressure.
Similarly, a record player has a
crystal in its stylus. The crystal varies
its electrical current as it rides over
the bumps and ridges of the record
groove.
The most efficient way of produc
ing these crystals will be by mimicking
biomineralization. Unlike the older
methods, such as vapor deposition,
it will now be pbssible to produce-
larger crystals, as. well as a greater
variety of types. v :
Some science writers have even
speculated that it will be possible to
develop mussels that will make the
crystals for us.
the gourmet customer," she says.
American Natural Foods supplies
stores and restaurants with specialty
condiments made with the Japanese
high-protein food paste called miso.
Slater, at Weaver Street Market, .
sees the local market also broaden
ing to include older people under '
doctor's orders and people who are
limiting their salt intake.
Serwetnyk attributes this broad
ening to the fitness craze of a few
years ago.
"Even fast food is adapting to this
consciousness," she says. "Some of
the fast food chains are seeing that
there is a market for this salad thing.
Salad and hamburgers are both -trendy."
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