Results 81 to 90 of about 136,791 (265)

Analysis of stock market behavior of the major financial exchanges worldwide using multivariate analysis (principal component analysis PCA) for the period 2011 to 2014

Revista CEA, 2015
The objective of this research is to analyze the stock performance of 27 stock markets around the world, using Principal Components Analysis (PCA). This method allows grouping the correlated variables together, obtaining an orthogonal basis where the
Christian Arturo Quiroga Juárez, Aglaé Villalobos Escobedo   +1 more
doaj   +1 more source

Advanced Electron Microscopy and Microcomputed Tomography Analysis of Single‐Crystal Ni‐Base Superalloys After Short‐Term Multiaxial Creep

Advanced Engineering Materials, EarlyView.
This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome, Lijie Cao, Christoph Somsen, Johannes Boes, René Hesse, Werner Theisen, Gunther Eggeler   +6 more
wiley   +1 more source

Comparative Analysis of the Volatile Components of Agrimonia eupatoria from Leaves and Roots by Gas Chromatography-Mass Spectrometry and Multivariate Curve Resolution

Journal of Analytical Methods in Chemistry, 2013
Gas chromatography-mass spectrometry and multivariate curve resolution were applied to the differential analysis of the volatile components in Agrimonia eupatoria specimens from different plant parts.
Xiao-Liang Feng, Yun-biao He, Yi-Zeng Liang, Yu-Lin Wang, Lan-Fang Huang, Jian-Wei Xie   +5 more
doaj   +1 more source

Ferroelectricity in Antiferromagnetic Wurtzite Nitrides

Advanced Functional Materials, EarlyView.
We establish MnSiN2${\rm MnSiN}_2$ and MnGeN2${\rm MnGeN}_2$ as aristotypes of a new multiferroic wurtzite family that simultaneously exhibits ferroelectricity and antiferromagnetism with altermagnetic spin splitting. By strategically substituting alkaline‐earth metals, we predict new materials with coexisting switchable polarization, spin texture, and
Steven M. Baksa, Lin‐Ding Yuan, Stephen D. Wilson, James M. Rondinelli   +3 more
wiley   +1 more source

Towards designer organelles by subverting the peroxisomal import pathway

Nature Communications, 2017
Designer organelles could allow the isolation of synthetic biological pathways from endogenous components of the host cell. Here the authors engineer a peroxisomal protein import pathway orthogonal to the naturally occurring system.
Laura L. Cross, Rupesh Paudyal, Yasuko Kamisugi, Alan Berry, Andrew C. Cuming, Alison Baker, Stuart L. Warriner   +6 more
doaj   +1 more source

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

Polarization and DOA Estimation Based on Dual-Polarized Conformal Array

International Journal of Antennas and Propagation, 2019
A dual-polarized multiple signal classification (DP-MUSIC) algorithm is presented to estimate the arrival directions and polarizations for a dual-polarized conformal array.
Chao Liu, Shuai Xiang, Liangfeng Xu, Zhengfei Fang   +3 more
doaj   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source

Optimization of fermentation conditions of surfactin by Bacillus pumilus BA06

四川大学学报. 自然科学版, 2016
Surfactin is a kind of lipopetide surfactant with capacity of reducing interfacial tension, which makes it to be great potential in various applications of biotechnology and environmental protection.
JI Yang, FENG Hong
doaj  

Selective Assignment of Energy Transfer and Charge Separation Pathways in Reaction Centers by Pulse Polarized 2-D Photon Echo Spectroscopy

EPJ Web of Conferences, 2013
We present theoretical modelling of the nonlinear optical response of the bacterial reaction center incorporating electron and energy transfer on equal footing. Orthogonal polarized pulse sequences allow to dissect kinetic components in real space.
Roslyak Oleksiy, Bennett Kochise, Fingerhut Benjamin P., Mukamel Shaul   +3 more
doaj   +1 more source