Results 31 to 40 of about 241,773 (303)

Lattice-form-dependent orbital shape and charge disproportionation in charge- and orbital-ordered manganites [PDF]

open access: yesPhysical Review B, 2009
The orbital shapes and charge disproportionations at nominal Mn$^{3+}$ and Mn$^{4+}$ sites for the charge- and orbital-ordered phases have been studied on half-doped manganites Pr(Sr$_{0.1}$Ca$_{0.9}$)$_2$Mn$_2$O$_7$ and Eu$_{0.5}$Ca$_{1.5}$MnO$_4$ with double-layer and single-layer Mn-O networks, respectively, by means of x-ray structural analyses, in
Okuyama, D.   +5 more
openaire   +2 more sources

The Effect of Thickness on Strength of Single Lap Orbital Riveted Aluminum/Composite Joints Used in Marine Environments

open access: yesMetals, 2022
In an innovative vision of manufacturing, orbital riveting is a joining technique characterized by high efficiency, energy saving, low costs and low noise.
Guido Di Bella   +3 more
doaj   +1 more source

Did Fomalhaut, HR 8799, and HL Tauri Form Planets via the Gravitational Instability? Placing Limits on the Required Disk Masses

open access: yes, 2009
Disk fragmentation resulting from the gravitational instability has been proposed as an efficient mechanism for forming giant planets. We use the planet Fomalhaut b, the triple-planetary system HR 8799, and the potential protoplanet associated with HL ...
Andrews   +15 more
core   +1 more source

Candidate Members and Age Estimate of the Family of Kuiper Belt Object 2003 EL61 [PDF]

open access: yes, 2007
The collisional family of Kuiper belt object (KBO) 2003 EL61 opens the possibility for many interesting new studies of processes important in the formation and evolution of the outer solar system. As the first family in the Kuiper belt, it can be studied
D. Ragozzine, M. E. Brown, Noll K.
core   +3 more sources

Orbits of Jacobi forms and theta relations

open access: yesScience China Mathematics
Comment: 17 pages, comments are very welcome!
Gritsenko, Valery, Wang, Haowu
openaire   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

open access: yesFEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel   +13 more
wiley   +1 more source

Fat-forming solitary fibrous tumor of the orbit with typical imaging findings

open access: yesAmerican Journal of Ophthalmology Case Reports
Purpose: We describe a case of fat-forming solitary fibrous tumor (SFT) of the orbit with typical findings on imaging that may improve the awareness of orbital fat-forming SFT.
Lan Yao, Xinji Yang, Wei Wu
doaj   +1 more source

A systematic review of the treatment of lower eyelid retraction and our attempt of a dermal-orbicularis oculi suspension flap

open access: yesChinese Journal of Plastic and Reconstructive Surgery, 2022
Lower eyelid retraction describes the inferior displacement of the lower eyelid with or without inversion or ectropion. Based on the causes of lower eyelid retraction, we divided the forming factors of lower eyelid retraction into three categories: (1 ...
Yi Ding   +6 more
doaj   +1 more source

Brown Dwarfs and the Cataclysmic Variable Period Minimum [PDF]

open access: yes, 1999
Using improved, up-to-date stellar input physics tested against observations of low-mass stars and brown dwarfs we calculate the secular evolution of low-mass donor cataclysmic variables (CVs), including those which form with a brown dwarf donor.
Allard F.   +50 more
core   +3 more sources

Values of harmonic weak Maass forms on Hecke orbits [PDF]

open access: yesJournal of Mathematical Analysis and Applications, 2019
Let $q:=e^{2 iz}$, where $z \in \mathbb{H}$. For an even integer $k$, let $f(z):=q^h\prod_{m=1}^{\infty}(1-q^m)^{c(m)}$ be a meromorphic modular form of weight $k$ on $ _0(N)$. For a positive integer $m$, let $T_m$ be the $m$th Hecke operator and $D$ be a divisor of a modular curve with level $N$.
Choi, Dohoon, Lee, Min, Lim, Subong
openaire   +4 more sources

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