Results 31 to 40 of about 8,086,892 (266)

Spectroscopic-network-assisted precision spectroscopy and its application to water

open access: yesNature Communications, 2020
Precision-spectroscopy techniques can accurately measure lines in constrained frequency and intensity ranges. The authors propose a spectroscopic-network-assisted precision spectroscopy method by which transitions measured in a narrow range provide ...
Roland Tóbiás   +8 more
doaj   +1 more source

Simulation Study of Aluminum Alloy Ribbed Member Spinning with Ultrasonic Vibration

open access: yesShanghai Jiaotong Daxue xuebao, 2021
Flow spinning process is beneficial to realizing the integral forming of the ribbed members, but the height of the inner rib that can be formed is limited. Therefore, an ultrasonic assisted method was introduced into the flow spinning process to increase
LI Xiaokai, ZHAO Yixi, YU Zhongqi, ZHU Baohang, CUI Junhui
doaj   +1 more source

Complex Dirac Structures: Invariants and Local Structure

open access: yesCommunications in Mathematical Physics, 2022
AbstractWe study complex Dirac structures, that is, Dirac structures in the complexified generalized tangent bundle. These include presymplectic foliations, transverse holomorphic structures, CR-related geometries and generalized complex structures. We introduce two invariants, the order and the (normalized) type.
Dan Aguero, Roberto Rubio
openaire   +4 more sources

Formation Law of Surface Defects in Stretch-Bending Formamtion of Aluminum Trim Strip for Automobile Body

open access: yesShanghai Jiaotong Daxue xuebao, 2022
Surface defects refer to the local undulation of the parts in the forming process. The variable cross-section and variable-curvature aluminum trim parts are prone to local surface defects during the stretch-bending process, which has a great impact on ...
ZHENG Gaoyuan, ZHAO Yixi, CUI Junhui
doaj   +1 more source

Monetite vs. Brushite: Different Influences on Bone Cell Response Modulated by Strontium Functionalization

open access: yesJournal of Functional Biomaterials, 2022
Monetite and brushite are regarded with increasing interest for the preparation of biomaterials for applications in the musculoskeletal system. Herein, we investigated the influence of strontium substitution in the structures of these two phosphates on ...
Elisa Boanini   +5 more
doaj   +1 more source

Structure of shells in complex networks

open access: yes, 2009
In a network, we define shell $\ell$ as the set of nodes at distance $\ell$ with respect to a given node and define $r_\ell$ as the fraction of nodes outside shell $\ell$. In a transport process, information or disease usually diffuses from a random node
B. Bollobás   +12 more
core   +1 more source

The geometry of wrapped M5-branes in Calabi-Yau 2-folds [PDF]

open access: yes, 2005
We study the geometry of M5-branes wrapping a 2-cycle which is Special Lagrangian with respect to a specific complex structure in a Calabi-Yau two-fold.
Fayyazuddin, Ansar   +2 more
core   +1 more source

Anti-Oxidant Multi-Functionalized Materials: Strontium-Substituted Monetite and Brushite as Delivery Systems for Curcumin

open access: yesPharmaceutics, 2023
Curcumin has numerous biological activities and pharmaceutical applications related to its ability to inhibit reactive oxygen species. Herein, strontium-substituted monetite (SrDCPA) and strontium-substituted brushite (SrDCPD) were synthesized and ...
Francesca Silingardi   +5 more
doaj   +1 more source

The complex channel networks of bone structure

open access: yes, 2004
Bone structure in mammals involves a complex network of channels (Havers and Volkmann channels) required to nourish the bone marrow cells. This work describes how three-dimensional reconstructions of such systems can be obtained and represented in terms ...
Costa L. F.   +5 more
core   +1 more source

Energy-Complexity Relations by Structural Complexity Methods [PDF]

open access: yesAIP Conference Proceedings, 2011
In this paper we shall review some of the most recent developments and results on work on energy‐complexity relations and, if time will allow it, we shall provide an analytical proof of eq. (3) below, a fundamental relation between energy and complexity established by numerical experiments.
Renzo L. Ricca   +4 more
openaire   +1 more source

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