Oricalco - thermal shape memory fabric
The first orthogonal weaving example of Nitinol. The 'Thermal Shape Memory Alloy' is characterized by its extraordinary ability to recover any shape, pre-programmed, upon heating. Until today this light weight alloy with about 50% Titanium inside has been used in advanced sectors like space and recently in medical applications. Moreover this fabric is the first for which the shape memory alloy, named Nitinol, was weaved orthogonally that is to say that Oricalco is the first fabric with shape mem
Mitochondrial DNA Launois-Bensaude's Lipomatosis
Even though Brodie is said to have first described diffuse symmetrical lipomatosis with predilection for the neck already in the 1846 (Clinical Lectures on Surgery, Delivered at St. George's Hospital Philadelphia: Lea and Blanchard pub. Pp 201-201. Brodie, B.C.) the pathogenesis of Launois Bensaude' Lipomatosis is still unknown.
Obtaining SNPs from UCSC Table Browser
A quick tip of the week on how to obtain a list of SNPs and data for a gene of interest quickly from the UCSC Table Browser
Preservation of adaptive plasticity across scales of biological organization: from molecules to soci
This webcast outlines why and how adaptive plasticity is maintained at each and every scale of biological organization
Potatoes vs. Late Blight: Plants at War and Peace
Plant genome research is already revolutionizing the field of biology. Currently, scientists are unlocking the secrets of some of the most important plants in our lives, including corn, cotton and potatoes. Secrets of Plant Genomes: Revealed! takes viewers on a lively, upbeat journey that explores how these plants got to be the way they are and investigates how we can make better use of them in the future. Plant scientists are hard at work--in the lab, in the field and at the computer--to increa
"On the Night When the Levee Broke": William Cobb Remembers the 1927 Mississippi Flood
In spring 1927 it started raining in the Upper Midwest and, according to one observer, "it just never did stop." Torrential rains quickly filled the Mississippi's dozens of tributaries. On April 21, the supposedly impregnable levee system, maintained since 1879 by the Mississippi River Commission, sprang two leaks, or "crevasses" as they are known. Within days the Mississippi River levee system sustained forty more major crevasses in Arkansas, Mississippi, and Louisiana, unleashing a natural dis
3.4.4 Stress concentration at joint Although it is known that a round hole in a flat sample will theoretically produce a stress concentration of about 3, the issue was decided experimentally. A tensile test at 25 °C was undertaken on an intact eye-bar-pin assembly from the bridge, being some 8 m long and from a lower part of the chain. It yielded at about 7 MN, and fractured in the shank at a stress of about 770 MPa. The yield stress in the shank was about 520 MPa, and the failed eye bar showed ductile behaviour with a reducti
Although it is known that a round hole in a flat sample will theoretically produce a stress concentration of about 3, the issue was decided experimentally. A tensile test at 25 °C was undertaken on an intact eye-bar-pin assembly from the bridge, being some 8 m long and from a lower part of the chain. It yielded at about 7 MN, and fractured in the shank at a stress of about 770 MPa. The yield stress in the shank was about 520 MPa, and the failed eye bar showed ductile behaviour with a reducti
"Human Rights are Women's Rights and Workers' Rights are Women's Rights:" May Chen on the United Nat
The United Nations Fourth World Conference on Women was held in Beijing, China during September 1995. The conference, which called for gender equality, development, and peace, grew out of the international women's movement and marked the end of the official United Nations decade of Women. For women like May Chen, Vice President of the Union of Needletrades, Industrial, and Textile Employees (UNITE), the conference was an opportunity to share their activist experiences and learn about issues conf
Perspectives for Universities in the Global South: A Brazilian Point of View
In this presentation the following aspects will be addressed: an overview of academic and scientific institutions in Brazil, the academic and scientific status of Brazil today, main characteristics of the Federal University of Bahia, historical aspects of international academic cooperation in Brazil, a brief review on the main types of international academic cooperation, political aspects related to international academic cooperation, main characteristics of the exchange of knowledge betw
Biology of Flagellates and Amoebas
Introduction to the biology of flagellates and amoebas.
Biology of Chordates
Biology of chordates. Every chordate has four characteristic features. We all have something in common!
Vietnam: Journeys of Body, Mind, and Spirit
This Web site, created to complement the Vietnam: Journeys of Body, Mind, and Spirit exhibit, includes the following sections: Introduction is an overview of the incredible diversity of Vietnam's people and landscapes; Journeys Through Time and Space provides a look at Vietnam today and a time-line of this ancient country's history; Journeys of Gods, Families and Ancestors considers the importance of lunar New Year and the ancestral altar; Journeys of People and Goods examines how international
It Takes All Kinds to Make a World
This fun Web site is part of OLogy, where kids can collect virtual trading cards and create projects with them. Here, marine biologist Melanie Stiassny introduces kids to biodiversity in the ocean. The article contains three engaging, kid-friendly sections: Diversity of Life on Earth, which has an overview of six major groups of life on Earth and challenges kids to determine the correct group for nine different life forms, including blue-green alga, spiny lobster, red mangrove, and white marlin.
Milstein Hall of Ocean Life
This Web site, created to complement the Hall of Ocean Life, looks at the cradle of life for our planet, along with its key to our future. It includes the following sections: Dioramas is an in-depth look at the Hall of Ocean Life's dioramas. They are: Andros Coral Reef, Diving Birds, Diving for Pearls, Polar Bear, Sargasso Sea, Walrus, West Indian Manatee, Northern Elephant Seal, Northern Sea Lion, Harbor Seal, Dolphin and Tuna, Sea Otter, Tiger Shark, and Sperm Whale and Giant Squid. Ecosystems
Earth Rotation from Galileo Imagery: 3600 x Real-Time
This animation is one in a series created to show an accurate representation of the Earths rotation at different temporal resolutions. The animation is created from images taken by the Galileo spacecraft during a close pass of the Earth on December 11-12, 1990. The animations range from real-time, in which no rotation can be perceived, to 3600 times real-time, in which both the Earths rotation and cloud motion can bee seen. The series also includes an animation in which the Earths rotation has b
Molecular Classification - Prof. Chris Man (Part 2)
Recent advances in genomic and proteomic technologies have revolutionized our way of classifying diseases. These high-throughput technologies allow the development of powerful and multivariate classifiers to distinguish different diseases or tumors based on their molecular profiles. Molecular classification provides a new way to distinguish histologically similar but molecularly different types of tumors, and hence improves tumor diagnosis and prognosis. In this course, we introduce major concep
Multipolar representation of protein structure
Background That the structure determines the function of proteins is a central paradigm in biology. However, protein functions are more directly related to cooperative effects at the residue and multi-residue scales. As such, current representations based on atomic coordinates can be considered inadequate. Bridging the gap between atomic-level structure and overall protein-level functionality requires parameterizations of the protein structure (and other physicochemical properties) in a quasi-co
Methylphenidate Decreased the Amount of Glucose Needed by the Brain to Perform a Cognitive Task
The use of stimulants (methylphenidate and amphetamine) as cognitive enhancers by the general public is increasing and is controversial. It is still unclear how they work or why they improve performance in some individuals but impair it in others. To test the hypothesis that stimulants enhance signal to noise ratio of neuronal activity and thereby reduce cerebral activity by increasing efficiency, we measured the effects of methylphenidate on brain glucose utilization in healthy adults. We measu
Drawing Shadows to Stone: Photographing North Pacific Peoples
This Web site, created to complement an American Museum of Natural History exhibition, takes a look at an anthropological expedition to record the people and cultures of the North Pacific.
Paradise Redefined: Part 2
A journey to a coral reef chain hidden in the Central Pacific forces scientists to revisit the definition of a pristine environment. Part Two.