Results 81 to 90 of about 6,829 (292)

Paradoxical Topological Soliton Lattice in Anisotropic Frustrated Chiral Magnets

open access: yesAdvanced Science, EarlyView.
The article describes the discovery of a stable skyrmion‐antiskyrmion lattice (S‐AL) in anisotropic frustrated chiral magnets. This lattice has a net‐zero topological charge due to a balanced population of skyrmions and antiskyrmions. This is a paradoxical finding since these particles normally annihilate each other.
Sayan Banik   +2 more
wiley   +1 more source

A Trypsin‐Like Serine Protease ZmNAL1a Fine‐Tunes Maize Floral Transition and Flowering Time

open access: yesAdvanced Science, EarlyView.
This study identifies a trypsin‐like serine protease, ZmNAL1a, that moves from leaves to the shoot apical meristem. ZmNAL1a promotes the floral transition by degrading TOPLESS‐like corepressor REL2, which thereby enhances the expression of key flowering genes through elevating histone acetylation and relieving REL2–ZmEREBP147‐mediated transcriptional ...
Nan Li   +15 more
wiley   +1 more source

A Closed‐Loop Hybrid Discovery System of Type I Photosensitizers for Hypoxic Tumor Therapy

open access: yesAdvanced Science, EarlyView.
The work developed a closed‐loop hybrid discovery system to rationally design and predict high‐performance Type I PSs for hypoxic tumor therapy. 664 Potential candidates are identified from a dataset through a support vector machine (SVM) classification model, and two candidates are experimentally verified as Type I PSs, which highlighted the potential
Xia Ling   +9 more
wiley   +1 more source

Positive Definite Norm Dependent Matrices In Stochastic Modeling

open access: yesDemonstratio Mathematica, 2014
Positive definite norm dependent matrices are of interest in stochastic modeling of distance/norm dependent phenomena in nature. An example is the application of geostatistics in geographic information systems or mathematical analysis of varied spatial ...
Kuniewski Sebastian P.   +1 more
doaj   +1 more source

Manipulating Spin States by Metal Axial Coordination of Active Sites for Generating Valuable CH4 in CO2 Reduction

open access: yesAdvanced Science, EarlyView.
By encapsulating Ni atoms into Mn zeolitic imidazolate framework‐8, the spin‐state transition of Mn 3d3 from low‐spin to high‐spin was facilitated upon Ni axial coordination via Mn 3d orbital splitting. This facilitates the electronic donation and induces the closing of Mn d‐band center toward Fermi level to strengthen *CO adsorption, thereby ...
Min Zhang   +5 more
wiley   +1 more source

Infinitely divisible positive definite sequences [PDF]

open access: yesTransactions of the American Mathematical Society, 1969
Introduction. Sequences of complex numbers which generate positive semidefinite Toeplitz or Hankel matrices occur naturally in many areas of mathematics and are usually called positive definite sequences. It is well known that a sequence formed from a positive integer power of the terms of a positive definite sequence is always itself a positive ...
openaire   +2 more sources

Manipulation of Emergent Collective Excitations via Composition Control in Mixed MPX3 Correlated 2D Antiferromagnets

open access: yesAdvanced Science, EarlyView.
Transition metal and chalcogen substituents are introduced into 2D antiferromagnet, NiPS3, and comprehensive photoluminescence and Raman spectroscopy studies are conducted to investigate how spin orbit entangled exciton and two magnon scattering evolve as functions of substituent concentration.
Cong Tai Trinh   +12 more
wiley   +1 more source

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