Results 51 to 60 of about 115,113 (271)

The revival-collapse phenomenon in the quadrature field components of the two-mode multiphoton Jaynes-Cummings model

open access: yes, 2009
In this paper we consider a system consisting of a two-level atom in an excited state interacting with two modes of a radiation field prepared initially in $l$-photon coherent states.
Allen L   +26 more
core   +2 more sources

Counting valence quarks at RHIC and LHC [PDF]

open access: yes, 2006
We consider the Nuclear Modification Ratios in heavy ion collisions, R_CP and R_AA, in the region of intermediate transverse momentum, and study the dependency upon the constituent quark composition of the observed hadron.
A.D. Polosa   +62 more
core   +1 more source

Triblock Polymer Engineering Enables Hydration‐Rich, High‐Performance, Fouling‐Resistant Interfaces

open access: yesAdvanced Functional Materials, EarlyView.
A molecularly engineered triblock polymer (PHZ) rapidly reorganizes into a hydration‐rich interfacial layer on diverse surfaces, strongly suppressing hydrophobic attraction and fouling. The triblock polymer provides robust energy and steric barriers to oily foulants, enabling high‐performance antifouling at ultralow dosage.
Chenyu Qiao   +6 more
wiley   +1 more source

ارزیابی راهکارهای سازگار شدن گیاه ذرت در شرایط اقلیم آینده ایران با استفاده از مدل SSM-iCrop2 [PDF]

open access: yesتولید گیاهان زراعی
سابقه و هدف: تغییر اقلیم یا همان تغییرات آب‌وهوایی یکی از مهم‌ترین تهدیدهای عمده و حیاتی است که امروزه بشر با آن مواجه می‌باشد و عملکرد بسیاری از گیاهان از جمله ذرت (Zea mays L.)؛ را تحت تاثیر خود قرار می‌دهد.ذرت از نظر تولید جهانی بعد از گندم (.Triticum
فهیمه علیزاده   +3 more
doaj   +1 more source

Trend Analysis of CMIP5 Ensemble of Climate Indices over Southeast Europe with Focus on Agricultural Impacts

open access: yesCybernetics and Information Technologies, 2020
Nowadays there is a strong degree of agreement that the climate change is the defining challenge of our time, which will exert influence on the ecosystems, on all branches of the international economy and on the quality of life.
Chervenkov Hristo   +3 more
doaj   +1 more source

A first-order phase transition at the random close packing of hard spheres

open access: yes, 2016
Randomly packing spheres of equal size into a container consistently results in a static configuration with a density of ~64%. The ubiquity of random close packing (RCP) rather than the optimal crystalline array at 74% begs the question of the physical ...
Alder   +50 more
core   +1 more source

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

Superquantization rule for multistability in driven-dissipative quantum systems

open access: yesNew Journal of Physics
We present a superquantization rule which indicates the possible robust stationary states of a generic driven-dissipative quantum system. Multistability in a driven cavity mode interacting with a qudit is revealed hence within a simple intuitive picture.
Nikolett Német   +3 more
doaj   +1 more source

Magneto-caloric effect in the pseudo-binary intermetallic YPrFe17 compound [PDF]

open access: yes, 2011
We have synthesized the intermetallic YPrFe17 compound by arc-melting. X-ray and neutron powder diffraction show that the crystal structure is rhombohedral with View the MathML source space group (Th2Zn17-type). The investigated compound exhibits a broad
Alvarez   +47 more
core   +2 more sources

Chiral Acoustic Phonon and Conservation of Pseudoangular Momentum in α‐Quartz

open access: yesAdvanced Materials, EarlyView.
Chiral acoustic phonons in α‐quartz are probed via Brillouin light scattering, exploiting the photon's helicity and the crystal's handedness. The interaction obeys a selection rule arising from pseudoangular momentum conservation, enabling direct optical access to phonon chirality in nonsymmorphic crystals.
Changsoo Kim   +8 more
wiley   +1 more source

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