News tagged with complex
International scientists set boundaries for survival
Sep 23, 2009 |
3.7 / 5 (28) |
16
Human activities have already pushed the Earth system beyond three of the planet's biophysical thresholds, with consequences that are detrimental or even catastrophic for large parts of the world; six others ...
Echoes of phlogiston in stem cell biology
Sep 21, 2009 |
5 / 5 (1) |
0
Before it was learned that matter burns by taking up oxygen, most chemists sought to explain combustion as the release of a mysterious substance, which they named "phlogiston". Phlogiston theory was a conceptual breakthrough ...
Polymorphisms of the interleukin-1 gene complex may influence alcohol dependence
Sep 18, 2009 |
not rated yet |
0
Cytokines are small proteins secreted by cells that serve as molecular messengers between cells. Pro-inflammatory cytokines - which function in the immune system - may be involved in alcohol dependence (AD). A study of ...
Truth Is Stranger Than Science: Discovering true properties of metal oxides
Sep 17, 2009 |
5 / 5 (4) |
2
(PhysOrg.com) -- To successfully compete in a global marketplace, manufacturers continually search for better materials: faster drying and less hazardous paint, longer-lasting sunscreen, and faster computers. ...
Landmark study sheds new light on human chromosomal birth defects
Sep 16, 2009 |
4.8 / 5 (4) |
0
Using yeast genetics and a novel scheme to selectively remove a single protein from the cell division process called meiosis, a cell biologist at The Florida State University found that when a key molecular ...
Web page ranking algorithm detects critical species in ecosystems
Sep 04, 2009 |
4.5 / 5 (4) |
0
Google's algorithm for ranking web-pages can be used to determine which species are critical for sustaining ecosystems. Drs. Stefano Allesina and Mercedes Pascual find that "PageRank" can be applied to the study of food webs, ...
Solving the Nuclear Pore Puzzle
Aug 19, 2009 |
not rated yet |
0
(PhysOrg.com) -- Computational biochemist Frank Alber compares determining the architecture of a macromolecular machine to solving a jigsaw puzzle.
New research supports model for nuclear pore complex
Aug 18, 2009 |
not rated yet |
0
(PhysOrg.com) -- To protect their DNA, cells in higher organisms are very choosy about what they allow in and out of their nuclei, where the genes reside. Guarding access is the job of transport machines called nuclear pore ...
Scientists find universal rules for food-web stability
Aug 06, 2009 |
5 / 5 (2) |
0
The findings, published in this week's issue of Science, conclude that food-web stability is enhanced when many diverse predator-prey links connect high and intermediate trophic levels. The computations also reveal that s ...
NYU physicists make room for oddballs
Aug 03, 2009 |
5 / 5 (2) |
0
(PhysOrg.com) -- Here's a question. How many gumballs of different sizes can fit in one of those containers at the mall so as to reward a well-spent quarter? It's hard to believe that most people never consider ...
In a Chemical Library, Yale Researchers Finds Keys to Cell Movement
Aug 03, 2009 |
5 / 5 (1) |
0
(PhysOrg.com) -- Rummaging through a biotechnology company’s chemical closet, Yale University researchers found two molecules that will allow scientists to better study how cells move.
Software development: speeding from sketchpad to smooth code
Jul 30, 2009 |
4 / 5 (2) |
1
(PhysOrg.com) -- Creating error-free software remains time consuming and labour intensive. A major European research effort has developed a system that speeds software development from the drawing board to high-quality, platform-independent ...
Physicists show way to count sweets in a jar -- from inside the jar
Jul 29, 2009 |
4.2 / 5 (12) |
0
(PhysOrg.com) -- How many sweets fit into a jar? This question depends on the shapes and sizes of the sweets, the size of the jar, and how it is filled. Surprisingly, this ancient question remains unanswered because of the ...
Game utilizes human intuition to help computers solve complex problems
Technology / Computer Sciences
Jul 27, 2009 |
3.7 / 5 (3) |
1
(PhysOrg.com) -- A new computer game prototype combines work and play to help solve a fundamental problem underlying many computer hardware design tasks.
Social scientist suggests new research framework to study complex systems
Other Sciences / Social Sciences
Jul 23, 2009 |
3.7 / 5 (3) |
0
The often-used one-size-fits-all approach to policies aimed at achieving sustainable social-ecological systems needs to be updated with a diagnostic tool to help scholars from multiple disciplines better frame the question ...
