Results 31 to 40 of about 95,244 (268)

A Regional Gravimetric and Hybrid Geoid Model in Northern Greece from Dedicated Gravity Campaigns

Remote Sensing
The determination of physical heights is of key importance for a wide spectrum of geoscientific applications and, in particular, for engineering projects.
Georgios S. Vergos, Dimitrios A. Natsiopoulos, Elisavet G. Mamagiannou, Eleni A. Tzanou, Anastasia I. Triantafyllou, Ilias N. Tziavos, Dimitrios Ramnalis, Vassilios Polychronos   +7 more
doaj   +1 more source

Evaluation of terrestrial and airborne gravity data over Antarctica – a generic approach

Journal of Geodetic Science, 2019
The AntGrav project, funded by the German Research Foundation (DFG) has the main objective to homogenize and optimize Antarctic gravity field information.
Zingerle P., Pail R., Scheinert M., Schaller T.   +3 more
doaj   +1 more source

The Gravity Force Generated by a Non-Rotating Level Ellipsoid of Revolution with Low Eccentricity as a Series of Spherical Harmonics

Mathematics, 2023
The gravity force of a gravity field generated by a non-rotating level ellipsoid of revolution enclosing mass M is given as a solution of a partial differential equation along with a boundary condition of Dirichlet type. The partial differential equation
Gerassimos Manoussakis
doaj   +1 more source

Measurement of Jupiter’s asymmetric gravity field [PDF]

Nature, 2018
The gravity harmonics of a fluid, rotating planet can be decomposed into static components arising from solid-body rotation and dynamic components arising from flows. In the absence of internal dynamics, the gravity field is axially and hemispherically symmetric and is dominated by even zonal gravity harmonics J2n that are approximately proportional to
Iess, L., Folkner, W., Durante, D., Parisi, M., Kaspi, Y., Galanti, E., Guillot, Tristan, Hubbard, W., Stevenson, D., Anderson, J., Buccino, D., Casajus, L. Gomez, Milani, A., Park, R., Racioppa, P., Serra, D., Tortora, P., Zannoni, M., Cao, H., Helled, R., Lunine, J., Miguel, Y., Militzer, B., Wahl, S., Connerney, J., Levin, S., Bolton, S.   +26 more
openaire   +8 more sources

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Method of discrete approximations of gravity field on delineation of promising sections

Геофизический журнал, 2014
The theme considered in the article is connected with the numerical solution of Laplas equation while solving the problem of gravimetry. It is shown, that the use of a method of discrete approximations reduces a problem of restoration of values of a ...
Z.Z. Arsanukayev
doaj   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Satellite Gravity Field Recovery Using Variance‐Covariance Information From Ocean Tide Models

Earth and Space Science, 2023
Monthly gravity field recovery using data from the GRACE and GRACE Follow‐On missions includes errors limiting the spatial and temporal resolution of the estimated gravity fields.
Markus Hauk, Josefine Wilms, Roman Sulzbach, Natalia Panafidina, Michael Hart‐Davis, Christoph Dahle, Vitali Müller, Michael Murböck, Frank Flechtner   +8 more
doaj   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Precise levelling data processing near terraced landforms

Geodesy and Cartography, 2014
Precise levelling results are affected by the Earth’s gravity field, especially in areas of abrupt changes of landscape, such as terraced landforms. To eliminate the effect of the gravity field gradient, corrections need to be used in precise levelling ...
Silja Talvik
doaj   +1 more source