Results 81 to 90 of about 1,337 (262)

Some constancy results for harmonic maps from non-contractable domains into spheres

open access: yesElectronic Journal of Differential Equations, 2000
We use the Pohozaev identity on sub-domains of a Euclidean $r$-neighbourhood for a closed or broken curve to show that harmonic maps from such domains into spheres with constant boundary value remain constant.
Kewei Zhang
doaj  

Warm‐wet transition restructures arid lake microbiomes and functional potential

open access: yesiMetaOmics, EarlyView.
This study summarizes how a long‐term warm‐dry to warm‐wet transition restructures microbiomes and functional potential in Lake Bosten, an arid lake in northwestern China. Warm‐wet hydroclimatic change increased water level and hydrological connectivity, while decreasing salinity and total nitrogen.
Zhen Shen   +8 more
wiley   +1 more source

Traversable wormhole for string, but not for particle

open access: yesPhysics Letters B
We propose a Lorentzian wormhole geometry characterized by a closed string massless sector with nontrivial H-flux and a scalar dilaton. In the string frame, the dilaton exhibits a negative kinetic term, enabling the existence of the wormhole.
Hun Jang   +3 more
doaj   +1 more source

On Closed Geodesics on Ellipsoids

open access: yes, 2005
Closed geodesic lines on an ellipsoid in d-dimensional Euclidean space are considered. Explicit algebro-geometric condition for closedness of such a geodesic is given. The obtained condition is discussed in light of theta-functions theory and compared with some recent related results.
Dragovic, Vladimir, Radnovic, Milena
openaire   +2 more sources

Closed geodesics on Gödel-type backgrounds [PDF]

open access: yesJournal of High Energy Physics, 2003
latex, 15 pages, 1 figure.
openaire   +2 more sources

Intercomparison of a Regional Climate Model Ensemble for Selected European Catchments

open access: yesInternational Journal of Climatology, EarlyView.
This study analyzes a regional climate model ensemble for water cycle and water resource research with two models. Results show that ICON generally outperforms TSMP1 simulations, mainly with 2‐m temperature and precipitation. These findings serve as a baseline evaluation that shows how key structural differences influence the model skill.
Jane Leonor Roque   +10 more
wiley   +1 more source

Decoupling glacier retreat and surface stabilization on the Snežnik Plateau (Slovenia), insights from in situ cosmogenic 36Cl exposure and depth‐profile ages

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay   +6 more
wiley   +1 more source

Stringy Gravity: Solving the Dark Problems at ‘short’ distance

open access: yesEPJ Web of Conferences, 2018
Dictated by Symmetry Principle, string theory predicts not General Relativity but its own gravity which assumes the entire closed string massless sector to be geometric and thus gravitational. In terms of R/(MG), i.e.
Park Jeong-Hyuck
doaj   +1 more source

Lateral Carbon Transport Induced by Watershed Erosion: Driving Effects of Land Use, Rainfall, and Landscape Controls

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Lateral carbon transport induced by soil erosion is a key component of the global carbon cycle. Over the past 50 years, ecological restoration projects in the Loess Plateau of China have increased vegetation coverage. However, the effects of land use, precipitation variability, and landscape factors on lateral carbon transport remain unclear ...
Ganggang Ke   +6 more
wiley   +1 more source

Application of the Modulus of Continuity in Characterizing Geodesics

open access: yesپژوهش‌های ریاضی, 2020
Introduction This paper concerns an application of the modulus of continuity in characterizing geodesics. The modulus of continuity of a continuous function between metric spaces is a two variable function which assigns to each point and to each positive
Hojjat Farzadfard
doaj  

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