New technique could boost researchers' view of Earth's core

New radiation therapy technique for breast cancer : should the IOERT boost be a standard technique ?

The standard treatment for early breast cancer comprises wide local excision, sentinel lymph node biopsy or axillary lymph node dissection and whole-breast radiotherapy (WBRT), including boost radiation if indicated, and adjuvant medical treatment. Multiple randomized clinical trials and meta-analyses demonstrated the effectiveness and safety of WBRT, and revealed that local control plays a cru...

A New Topology of Embedded Z-H Buck-Boost Converter

In this paper, a new embedded Z-H (EZ-H) buck-boost converter is proposed. In this topology, two identical dc voltage sources are embedded in a LC network in a series connection with the inductors. The proposed converter eliminates the shoot-through (ST) switching state and there is no need for a front-end diode. Other advantages of the proposed topology are having capability of buck and boost ...

CORE — A New Computational Technique for Lattice Systems * COLIN

The Contractor Renormalization group (CORE) method, a new approach to solving Hamiltonian lattice systems, is introduced. The method combines contraction and variational techniques with the real-space renormalization group approach. It applies to lattice systems of infinite extent and is ideal for studying phase structure and critical phenomena. The CORE approximation is systematically improvab...

First-principles calculations of properties of orthorhombic iron carbide Fe7C3 at the Earths core conditions

Core Concept: Could sterile neutrinos be the next new fundamental particle?

Neutrino experiments have always been a source of the unexpected. When physicist Ray Davis and astronomer John Bahcall set up an underground detector at the Homestake mine in South Dakota in 1964, they were trying to intercept the constant stream of tiny ghostly particles emanating from the sun (1). Although the experiment was a success, the scientists were left scratching their heads. They obs...