Force in Biological News

1-finger exercise reveals unexpected limits to dexterity

... says the report, "that maximal voluntary downward force would scale with movement speed. Surprisingly, maximal force was independent of movement speed." The ... and Physical Therapy, in many tasks muscle force is affected by physiological "force-velocity" ...

Lenfest forage fish task force launched

... marine food webs. The Lenfest Forage Fish Task force ( ... Supported by the Lenfest Ocean Program, the task force will examine the roles of forage fish within food ... needs of dependant oceanic predators. The task force will recommend specific fishery management ...

Demonstration Features Commercial Technology for Combating Terrorism

... been encouraged to register and attend the 2009 force Protection Equipment Demonstration (FPED VII). ... is not open to the general public. The force Protection Demonstrations were initiated by the ... leaders responsible for physical security and force protection can stay abreast of evolving and ...

Demonstration Features Commercial Technology for Combating Terrorism

... been encouraged to register and attend the 2009 force Protection Equipment Demonstration (FPED VII). ... is not open to the general public. The force Protection Demonstrations were initiated by the ... leaders responsible for physical security and force protection can stay abreast of evolving and ...

Combating Terrorism with Commercial Technology: 2009 Force Protection Equipment Demonstration

... terrorism will be displayed during the 2009 force Protection Equipment Demonstration (FPED VII) at ... for use in combating terrorism through enhanced force protection. The FPED was initiated by the ... for immediate purchase and employment. The force Protection Equipment Demonstrations respond to ...

Home tooth bleaching slightly reduces enamel strength

... The scientists used a specialized tool to apply force to test the enamel hardness and stiffness (the surface ability to bounce back), and an atomic force microscope to observe the tiny nanometer-scale ... The surface ability to bounce back from applied force was reduced by an average of between 6 percent ...

Making a point: Picoscale stability in a room-temperature AFM

... directly off the needle point of an atomic force microscope probe, and in so doing has ... be made at room temperature in liquids. Atomic force microscopes (AFMs) are one of the workhorse tools ... cantilever, researchers can sense changes in the force and build up a nanoscale topographic image of the ...

Demonstration Targets Terrorism

... States are being encouraged to attend the 2009 force Protection Equipment Demonstration (FPED VII) in ... leaders responsible for physical security and force protection could stay abreast of evolving and ... The U.S. Army Product Manager, force Production Systems, will conduct FPED VII under ...

Microbot motors fit to swim human arteries

... are harnessing piezoelectricity, the energy force most commonly used to trigger-start a gas stove, ... piezoelectricity was the most suitable energy force for micro-motors because the engines can be ... often kinds of crystal, which translates the force of the ball into more than 10,000 volts of ...

CACI Awarded a Prime Position on $500 Million, Multiple-Award Program with Biometrics Operations and Support Services

... Services to Support U.S. Army's Biometrics Task force Worldwide ARLINGTON, Va., Jan. 12 ... core competency. The Biometrics Task force leads Department of Defense (DoD) activities to ... DoD's authoritative biometric database. The Task force supports warfighters as they face new challenges ...

Describing soils: Calibration tool for teaching soil rupture resistance

... classes are assigned based on the rupture force exerted between thumb and forefinger. "The ... spring between two door-pulls (knobs) where the force exerted is calibrated using a top loading ... the door-pulls are adjusted so that the desired force is exerted just as the cap screws touch. The cap ...

Vidalia onions: Alternative to hand-transplanting proven effective

... transplanting relies heavily on a migrant labor force and is significantly more expensive than machine ... about the possibility of a dwindling labor force in the future. George E. Boyhan, an Extension ... method can save growers money. If the labor force necessary for hand harvesting becomes scarce, ...

Trees won't stop tsunamis, scientists warn

... variables were at work in determining how the force of the water affected people and structures on ... absolutely no protection at all against the force of the ocean, and this led us to investigate the ... out of all the factors which may act on the force of the waves driving inland. These include the ...

To improve forecasting earthquakes, NJIT mathematician studies grains

... "Computational Homology, Jamming and force Chains in Dense Granular Flows," a four-year, ... like sand or salt, can lead to jamming, large force fluctuations and ultimately how they can ... The current project centers on so-called force chains, which are crucial for understanding ...

Registration Opens for 2009 Force Protection Equipment Demonstration

... -- Online registration has begun for the 2009 force Protection Equipment Demonstration (FPED VII). ... equipment solutions to current and evolving force protection and physical security challenges. The largest force protection event of its kind in the world, ...

Cost of hatchling turtles' dash for freedom

... with a lycra swim suit with a chord attached to a force transducer, before setting the youngster free in ... their large front flippers, pulling against the force transducer as if they were swimming out to sea. ... youngsters' progress was also reflected in the force with which they tugged on ...

The International Society for Stem Cell Research releases new guidelines

... Dr. Olle Lindvall, co-chair of the ISSCR task force that developed the guidelines and professor in ... the ISSCR convened an international task force of experts in stem cell science, clinical research and bioethics from 13 countries. The task force was led by Dr. Lindvall and Dr. Insoo Hyun, ISSCR ...

Dancing atoms now understood

... 'held tightly'and slowly dragged by a controlling force from one state to the next," said chemist Philip ... state while radio waves are the controlling force that drags the atoms from one state to the next. ... a 'perfect' adiabatic process, the controlling force is moved infinitely slowly with the system's ...

'Gray's Paradox' solved: Researchers discover secret of speedy dolphins

... developed a tool that conclusively measures the force a dolphin generates with its tail. Wei ... diagnostic technology by modifying and combining force measurement tools developed for aerospace ... researchers to calculate precisely how mush force the dolphin was producing. See a DPIV video ...

Gaps in adhesion

... 10% of the total. The researchers measured the force which allowed them to detach different polymer ... present on a fifth or a tenth of the links. The force required to pull a single polymer from the ... This is equivalent to a millionth of the weight force of a flea. ...

Advice to the new administration: UM foreign and domestic policy guide

... resort "speak softly but clearly first" and use force as a last resort. Return to JFK's principle: ... Generally they involve lower levels of force and focus on restoring order and security to the ... In the context of stability operations, military force tends to be successful when used in support of an ...

Research conference at UH to focus on US troops' needs, homeland security

... performance, advanced materials, and Navy and Air force research opportunities. Maj. Gen. Davin N. Senty, commander of the U.S. Air force Network Operations, will be the keynote speaker. ... said Col. Phil Bossert, commander of UH's Air force ROTC program. Registration and agenda ...

As sticky as a gecko... but 10 times stronger!

... surface the gecko is walking on by a molecular force called the Van der Waals force. This relatively weak force causes uncharged molecules to attract each other. ... is much easier--at this angle the sticking force is ten times weaker. In this way, the adhesive ...

Protein identified that plays role in blood flow

... for this phenomenon. Now, using atomic force microscopy - a microscope with very high ... blood vessels from the body and used atomic force microscopy to apply a controlled force to particular proteins located on the surface of ...

NIH EUREKA grant awarded to University of Miami scientist

... of Illinois yielded evidence that a mechanical force applied to nascent nerve synapses, or injured ... and repairs their connectivity. "This force (force orchestrated retrograde synaptic ... are able to prove the importance of mechanical force in re-growing connections between neurons, and if ...

2009 Force Protection Equipment Demonstration Set for Next May 19-21

... WASHINGTON, Sept. 8 /PRNewswire/ -- The 2009 force Protection Equipment Demonstration (FPED VII) ... equipment solutions to current and evolving force protection and physical security challenges. More ... opportunities to see currently available force protection equipment. ...

New 'nano-positioners' may have atomic-scale precision

... requires engineers to know precisely how much force is being applied to comb drive sensors and how ... to determine the precise displacement and force that's being applied to, or by, a comb drive. The Purdue researcher is able to measure this force by comparing changes in electrical properties ...

'Top Secret' Technology To Help U.S. Swimmers Trim Times at Beijing Olympics

... diagnostic technologies, modifying and combining force measurement tools developed for aerospace ... the flow, you need to know how much force the swimmer is producing, and how that force impacts the water." "Swimming research has ...

'Top secret' technology to help US swimmers trim times at Beijing Olympics

... diagnostic technologies, modifying and combining force measurement tools developed for aerospace ... affects the flow, you need to know how much force the swimmer is producing, and how that force impacts the water." "Swimming research has ...

Great white's mighty bite revealed

... they have also calculated that the bite force of the great white's extinct relative, the ... found that the largest great whites have a bite force of up to 1.8 tonnes. By comparison, a large African lion can produce around 560 kg of bite force and a human approximately 80 kg making the great ...

Fertility treatment in developing countries; a cycle of IVF for less than $200

... and those who can afford it. Now, a Special Task force of ESHRE has set about the immeasurable task of ... and non-governmental agencies. The Task force faces a huge challenge. According to a report ... one of the most important aims of this ESHRE Task force is to battle the silence that exists on the issue ...

University of Arizona scientist shares in discovery of microbe filaments' power

... bundle of Type IV pili retracts, it pulls with a force in the nanoNewton range, which is 10 times the force of a single retracting filament. The study ... forces in the 50 to 100 picoNewton range. This force allows the bacterium to move an object 10,000 ...

Fast AFM probes measure multiple properties of biomolecules or materials simultaneously

... membranes can replace conventional atomic force microscopy (AFM) cantilevers for applications ... and Computer Engineering. Details of the novel force sensing integrated readout and active tip (FIRAT) ... is generated only when there is an interaction force on the probe. In other words, transient ...

Engineers demonstrate a new type of optical tweezer

... the potential to make biological and microfluidic force measurements in integrated systems such as ... spherical chambers and could perform calibrated force measurements in a footprint of only 100x100µm. ... Additional applications include biological force measurements and sorting particles based on their ...

Stanford researchers make first direct observation of 3-D molecule folding in real time

... they are the first to use directly applied force to determine how a molecule makes a ... the beads apart, taking into account two factors: force and extension. By understanding how much force it takes to cause a certain amount of extension ...

Protein's strength lies in h-bond cooperation

... hydrogen bonds that work cooperatively to resist force and dissipate energy. This structure makes the ... stress. This allows the protein to withstand more force than if its beta strands had only one or two ... paper in Nano Letters describes how the external force changes the entropic energy in the system and ...

Biophysical Society announces winners of 2008 Student Travel Awards

... The Effect of Tether Length in Single Molecule force Spectroscopy. Ann C. Kimble-Hill, Indiana ... Peter A. Sims, Harvard University, force Measurements and Submillisecond Tracking of ... Enschede, The Netherlands, Quantitative Atomic force Microscopy Establishes Free Energy Parameters of ...

Media highlights in the Dec. 15 issue of Biophysical Journal

... leads to lung congestion and heart failure. The force of contraction is essentially determined by the ... already is used informally to calibrate atomic force microscopes. An official standard could, for the ... accepted units. DNA elasticity could provide a force standard from 0.1 -10 pico-Newtons (pN), where 1 ...

'Heftier' atoms reduce friction at the nanoscale, study led by Penn researcher reveals

... and the Argonne National Laboratory, used atomic force microscopy like an old-fashioned record needle, ... diamond and silicon surfaces to measure the force of friction. Before doing so, researchers coated ... kinetic energy from the tip of the atomic force microscope. The tips were less than 50nm in ...

US Army, US Navy, US Air Force, US Marines, US Department of Defense conference held at UH

... Col. Phil Bossert, USAF, the commander of Air force ROTC at UH. We are honored to be supporting this ... and literature from the Army ROTC, Air force ROTC, Air force Association, Navy ROTC, Bravo Zulu Services, UHs ...