In the phenomenological description of the nuclear interaction a crucial role is traditionally played by the exchange of a scalar I=0 meson, the sigma, of mass 500-600 MeV, which however is not seen clearly in the particle spectrum and which has a very ambiguous status in QCD. I show that a remarkably simple and reasonably controlled combination of ingredients can reproduce the features of this...

The nuclear force acting between protons and neutrons is studied in the Monte Carlo simulations of the fundamental theory of the strong interaction, the quantum chromodynamics defined on the hypercubic space-time lattice. After a brief summary of the empirical nucleon-nucleon (NN) potentials which can fit the NN scattering experiments in high precision, we outline the basic formulation to deriv...

Cells constantly sense and respond to mechanical signals by reorganizing their actin cytoskeleton. Although a number of studies have explored the effects of mechanical stimuli on actin dynamics, the immediate response of actin after force application has not been studied. We designed a method to monitor the spatiotemporal reorganization of actin after cell stimulation by local force application...

2008;51;368-374 J. Am. Coll. Cardiol. Frans J. Th. Wackers, and Kim Allan Williams Manuel D. Cerqueira, Daniel S. Berman, Marcelo F. Di Carli, Heinrich R. Schelbert, Society of Nuclear Cardiology Task Force 5: Training in Nuclear Cardiology: Endorsed by the American This information is current as of October 16, 2008 http://content.onlinejacc.org/cgi/content/full/51/3/368 located on the World Wi...

Public reporting burden for this collection of information is estimated to avemge 1 hour per response, including the time for reviewing inslructions, searching data sources, • . gathering and maintaining the data needed, and completing and reviewing the collection of in!onnation. Send comments regarding this burden estimate or any other aspect of th1s collectJOn or information, including sugges...

The attempts to find the right (underlying) theory for the nuclear force have a long and stimulating history. Already in 1953, Hans Bethe stated that ”more man-hours have been given to this problem than to any other scientific question in the history of mankind”. In search for the nature of the nuclear force, the idea of sub-nuclear particles was created which, eventually, generated the field o...

Two different approaches to the creation of “rigid” (gel-like) DNA particles (or DNA nanoconstructions) are considered. The physicochemical approach is based on the formation of nanobridges between double-stranded DNA molecules ordered in quasinematic layers of cholesteric liquid-crystalline dispersion (CLCD) particles or their salting-out. This approach represents by itself a “chemical gelatio...

Kelvin probe force microscopy (KPFM) adapts an atomic force microscope to measure electric potential on surfaces at nanometer length scales. Here we demonstrate that Heterodyne-KPFM enables scan rates of several frames per minute in air, and concurrently maintains spatial resolution and voltage sensitivity comparable to frequency-modulation KPFM, the current spatial resolution standard. Two com...

We developed an in-plane Atomic Force Microscope (AFM) probe that is specifically tailored to the needs of biological applications. It features a variable stiffness, which makes the stiffness of the probe adjustable to the surface hardness of the sample [1]. The inherent capability of the in-plane AFM probe for building a massively parallel array is also an important feature that greatly affect...

in asymmetric conflicts, great powers often adopt coercive strategies toward weak states. this strategy is a combination of threat, and limited and warning use of force if necessary to impact the opposite's strategy choice. given that the threats of the most powerful states are more effective because the penalty for target disobedience will be more intensive, it seems that the weak states ...