نتایج جستجو برای: nuclear force
تعداد نتایج: 423037 فیلتر نتایج به سال:
The actin cytoskeleton helps maintain structural organization within living cells. In large X. laevis oocytes, gravity becomes a dominant force and is countered by a nuclear actin network that prevents liquid-like nuclear bodies from immediate sedimentation and coalescence. However, nuclear actin's mechanical properties, and how they facilitate the stabilization of nuclear bodies, remain unknow...
Nuclear scales are discussed from the nuclear physics viewpoint. The conventional nuclear potential is characterized as a black box that interpolates nucleon-nucleon (NN) data, while being constrained by the best possible theoretical input. The latter consists of the longer-range parts of the NN force (e.g., OPEP, TPEP, the π-γ force), which can be calculated using chiral perturbation theory an...
We demonstrate one-dimensional nuclear magnetic resonance imaging of the semiconductor GaAs with 170 nanometer slice separation and resolve two regions of reduced nuclear spin polarization density separated by only 500 nanometers. This is achieved by force detection of the magnetic resonance, Magnetic Resonance Force Microscopy (MRFM), in combination with optical pumping to increase the nuclear...
We show how the renormalization group is used to construct a lowmomentum nucleon-nucleon interaction Vlow k, which unifies all potential models used in nuclear structure calculations. Vlow k can be directly applied to the nuclear shell model or to nucleonic matter without a G matrix resummation. It is argued that Vlow k parameterizes a high-order chiral effective field theory two-nucleon force....
How does nature hold together protons and neutrons to form the wide variety of complex nuclei in the Universe? Describing many-nucleon systems from the fundamental theory of quantum chromodynamics has been the greatest challenge in answering this question. The chiral effective field theory description of the nuclear force now makes this possible but requires certain parameters that are not uniq...
In October 1934, at a meeting of the Osaka Branch of the PhysicoMathematical Society of Japan, Hideki Yukawa proposed a new theory of nuclear forces involving the exchange between neutron and proton of an electrically charged “heavy quantum”.l Yukawa’s theory is known today as the meson theory of nuclear forces and his “heavy quantum” is called the meson.2 The theory provided a fundamental expl...
17-4ph stainless steel is a martensitic precipitation hardening stainless steel that provides an outstandingcombination of high strength, good corrosion resistance, good mechanical properties, good toughness in both base metal and welds, and short time, low-temperature heat treatments that minimize warpage and scaling. this valuable alloy is widely used in the aerospace, nuclear, chemical, petr...
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