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Tag: "force" at biology news

Mice with glowing hearts shed light on how hearts develop

...evels, and the sensor shows the patterns, rate and force of heart contractions. Since the mouse heart beats approximately 6 to 10 times per second, imaging requires a special high-speed camera that is cooled to minus 90 degrees Celsius (minus 128 Fahrenheit), reducing "noise" for a sharper image. Co-autho...

Major WHO study concludes calcium supplements can reduce complications during pregnancy

...for the current drugs to function, since they must force the flaps to close and remain closed in order to prevent the enzyme from working. It probably takes more energy for the drugs to close the more mobile flaps of the mutant. Perryman and his colleagues also observed that the flaps opened in a seesaw m...

Computer simulation hints at new HIV drug target

...for the current drugs to function, since they must force the flaps to close and remain closed in order to prevent the enzyme from working. It probably takes more energy for the drugs to close the more mobile flaps of the mutant. Perryman and his colleagues also observed that the flaps opened in a seesaw m...

A new way of looking at molecular motors

...ors enabled toxoplasmosis and malaria parasites to force their way into human cells. The researchers say that although their research is theoretical and a long way from clinical applications, the new classification system will help other researchers address important biomedical puzzles more precisely. ...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

...ert in dinosaur and crocodilian dentition, or bite force –?has helped to generate interest in the sciences among young children, typically fascinated by animals such as dinosaurs and crocodiles. He is an assistant professor of anatomy and vertebrate paleobiology at FSU; curator of the Florida State Univers...

Research details how a virus hijacks cell signals to cause infection

..., and how viruses may evolve unexpected methods to force themselves into cells." ...

MiRNA fingerprint identified in platelet formation

...as only recently been acknowledged as an important force in biology. For decades, scientific dogma has held that messenger RNA (mRNA) was responsible for carrying out DNA instructions, or code, for protein production in the cell. Little was known, however, about how cells actually regulated that process. ...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

... are propelled by the motion of their feet and the force of gravity," suggests Dr. Troje, Canada Research Chair in Vision and Behavioural Sciences. Conducted with Dr. Cord Westhoff from the Ruhr-Universität Bochum in Germany, the study was funded by the Canada Foundation for Innovation and the German Vo...

Protein 'nanosprings' most resilient found in nature

...riginal shape in real time, but they also generate force in the process of this rapid refolding ?something ...ke properties, the researchers said. Using atomic force microscopy (AFM) to view individual molecules in the current study, Marszalek and Pratt research ass...

On a fly's wing, scientists tally evolution's winners and losses

...hat rearrangement in the genome is the predominant force in the evolution of genomes," said Lupski. That is particularly evident in this report that allows carefully comparison of the mouse and human chromosomes. "Perhaps one way to evolve faster is not by making changes in base pairs (the chemicals that ...

Mouse to man: The story of chromosomes

...hat rearrangement in the genome is the predominant force in the evolution of genomes," said Lupski. That is particularly evident in this report that allows carefully comparison of the mouse and human chromosomes. "Perhaps one way to evolve faster is not by making changes in base pairs (the chemicals that ...

Mayo Clinic collaboration discovers protein amplifies DNA injury signals

... gene unstable. Genomic instability is the driving force in tumor formation, which is why cancer researchers around the world are focusing on understanding the DNA damage response pathway. Knowing how the cell communicates DNA injury to alert the repair system is an important first step to designing new th...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...predicted just by selection alone because a random force puts a new direction into play ?that's where the genetic revolution comes from." Templeton spoke Feb. 18 at the annual meeting of the American Association for the Advancement science, held Feb. 16-20 in St. Louis. He dedicated his talk to the late...

Antibacterial coatings cut infection rates

...ve but when they group together, can be a powerful force that creates havoc of disastrous proportions. It's the furanones that come to the rescue by irreversibly switching off the bacterial signalling mechanism. Without the signal, the bacteria think that they are alone; they don't start producing the bi...

Getting old? Slowing down? Blame inefficient mitochondria

...ds up a pressure of hydrogen ions (protons). These force through molecular turbines and enable the cell to generate ATP, an energy unit that can be used throughout the cell. Just as you can work out a power station's efficiency by seeing how much electricity it produces for each unit of oxygen and fuel it...

New, unique microscope for nanotech

...y, opened this fall, is a combination of an atomic force microscope and a laser scanning confocal microscop... first commercial machine of its kind. The atomic force microscope was built by Asylum Research of Santa Barbara and the confocal microscope system by Olymp...

Similar Stem Cells In Insect And Human Gut

...s used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engi...oneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny p...

Are U.S. Flu Death Figures More PR Than Science?

...s used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engi...oneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny p...

Nano springs eternal; Protozoan 'engine' posts nano records

...s used modern microscopes and tools to measure the force and speed of the spring. This is one powerful engi...oneme's contraction is measured in nano-newtons of force and centimeters/second of speed in a biological world where the ruler markings are usually in tiny p...

Changes to embryos can elicit change in adult fish

...hat dwell in Africa's Lake Malawi. One species had force modified jaws that are more adept at biting prey; ... mechanical advantage and the jaw can produce more force for biting. When the out-lever is long, that results in a lower mechanical advantage and a better de...

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