Results 51 to 60 of about 9,326 (201)

Synthesis, Characterization, Magnetic Properties, and DFT Investigations of Heterobimetallic Nickel–Lanthanide LNiIILnIII (Ln = Ce, Gd, Tb, Dy) Complexes Supported by Schiff Base Ligands

open access: yesEuropean Journal of Inorganic Chemistry, Volume 28, Issue 23, August 26, 2025.
Four 3d4f heterobimetallic Schiff base complexes are designed from the ditopic N,N’‐bis(3‐methoxysalicylaldiimine)‐1,3‐propylene‐2‐ol ligand. Experimental dc magnetic measurements and density functional theory computational investigations converge to antiferromagnetic exchange interaction between Ni(II) and Ce(III) ions while ferromagnetic interaction ...
Fatma Darkebira   +7 more
wiley   +1 more source

Deformation by cocycles of pointed Hopf algebras over non-abelian groups [PDF]

open access: yes, 2013
We introduce a method to construct explicitly multiplicative 2-cocycles for bosonizations of Nichols algebras B(V) over Hopf algebras H. These cocycles arise as liftings of H-invariant linear functionals on V tensor V and give a close formula to deform ...
Garcia, Gaston Andres, Mastnak, Mitja
core   +3 more sources

Association between hypertensive disorders of pregnancy and placenta accreta spectrum

open access: yesPregnancy, Volume 1, Issue 3, May 2025.
Abstract Introduction Placenta accreta spectrum and hypertensive disorders of pregnancy are two significant contributors to severe maternal morbidity and fetal prematurity that may have related but opposite uteroplacental vascular origins. However, the relationship between these conditions is uncertain.
Matthew Givens   +6 more
wiley   +1 more source

Does green finance really deliver what is expected? An empirical perspective

open access: yesBorsa Istanbul Review, 2022
Coupled with adopting the United Nations Sustainable Development Goals and the Paris Climate Agreement, the Asian Development Bank (ADB) role may not be overlooked.
Muhammad Asif Khan   +3 more
doaj   +1 more source

Matrix model holography [PDF]

open access: yes, 2014
We set up the formalism of holographic renormalization for the matter-coupled two-dimensional maximal supergravity that captures the low-lying fluctuations around the non-conformal D0-brane near-horizon geometry.
Ortiz, Thomas   +2 more
core   +3 more sources

XMM-Newton Observations Reveal Very High X-ray Luminosity from the Carbon-rich Wolf-Rayet Star WR 48a

open access: yes, 2010
We present XMM-Newton observations of the dusty Wolf-Rayet star WR 48a. This is the first detection of this object in X-rays. The XMM-Newton EPIC spectra are heavily absorbed and the presence of numerous strong emission lines indicates a thermal origin ...
Arnaud   +25 more
core   +1 more source

Estimating causes of maternal death in data‐sparse contexts

open access: yesStatistics in Medicine, Volume 43, Issue 24, Page 4702-4735, 30 October 2024.
Understanding the underlying causes of maternal death across all regions of the world is essential to inform policies and resource allocation to reduce the mortality burden. However, in many countries there exists very little data on the causes of maternal death, and data that do exist do not capture the entire population at risk.
Michael Y. C. Chong   +2 more
wiley   +1 more source

Environmental pollution and economic growth in the European Union countries: A systematic literature review

open access: yesEconomics and Business Review
This study presents a comprehensive analysis of the relationship between economic growth and CO₂ emissions in the European Union, with a particular focus on the Environmental Kuznets Curve (EKC) hypothesis.
Suproń Błażej
doaj   +1 more source

How does heterogeneous green technology innovation affect air quality and economic development in Chinese cities? Spatial and nonlinear perspective analysis

open access: yesJournal of Innovation & Knowledge, 2023
This study considers spatial and nonlinear perspectives to examine the heterogeneous role of green technology innovation in the economic development and air quality of Chinese cities.
Zhongqingyang Zhang   +3 more
doaj   +1 more source

Perturbatively improving renormalization constants [PDF]

open access: yes, 2013
Renormalization factors relate the observables obtained on the lattice to their measured counterparts in the continuum in a suitable renormalization scheme.
Constantinou, M.   +8 more
core  

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