Issue # 74 _ April 2002

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Cover

Circuits of Fear
Thematic project unveils functions of archaic brain structures, brought into action by a real or imagined danger signal By

S&T Policy

genetic

From Xylella to Alellyx

Five researchers create a biotechnological company in partnership with Votorantim Ventures

teaching

Good Job

Californian children write letters to Brazilian scientists

intellectual property

The power of the transnationals

An INPI study analyses sixty years of the history of patents in the chemical sector

computerization

On-line accounts

FAPESP widens the communication network with researchers

health

Combat front against tuberculosis

Network-TB brings together 170 specialists in search of new vaccines, medicines and tests for identifying the illness

Science

Genetics

Gene Hunters

Mastery of the DNA chip technique could facilitate the diagnosis of illnesses such as prostrate cancer

pharmacology

Wide spectrum

The Guaco, a plant native to the Atlantic Rain Forest, has more therapeutic properties than previously supposed

Biology

Reversing the game: plants against the sauba ant

Natural defenses, made from substances extracted from vegetal, kill off the leaf-cutting ants and the fungi that they grow to eat

environment

An alert on the pollution of the Amazon rivers

A survey on the largest hydrographic river basin in Rondônia confirms the impact of deforestation

astrophysics

The cosmic rays are arriving

Dozens of detectors come into operation at the Pierre Auger Observatory and collect the first pieces of information about the particles that travel 150 million light years before reaching the Earth

By

Technology

Optics

A laser gun against cancer

Researchers develop equipment and carry out a clinical study for the dissemination of Photo Dynamic Therapy (PDT)

By

materials engineering

More competitive plastics

Partnership between OPP and IPEN produces high resistance polypropylene and easy to recycle

Computing

Challenges for the future

IBM develops a chip that gives new life to the silicon chip and studies techniques that will allow computers to make decisions

By

Biomedical engineering

Proven efficiency

Equipment uses birds retina to test medicines with neurological action

chemistry

Less pollution

Nanocatalyst created in UFRGS eliminates aromatic compounds from petroleum

Electronic engineering

Innovative technical assistance

Equipment speedily detects problems and repairs modules in switching centers

engineering

Organic with a green seal

PITE project and Cena's new laboratory prepare studies for certification of foods produced without use of chemicals

Humanities

Visual Arts

University museum with a national stature

After renovation, USP's Contemporary Art Museum gains importance, visibility, and becomes a model to be followed

Education

From home, by computer

Research investigates distance learning to confirm results and disseminate its use

Scientific Literature

A skeptic causes polemics

Book that reassesses environmental problems arouses criticism from researchers

Homage

Brazil's centenary roots

Starting this month, seminars, debates, and exhibitions mark the celebration of the hundredth anniversary of the birth of Sérgio Buarque de Holanda