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A comparative study on chaoticity of equatorial/low latitude ionosphere over Indian subcontinent during geomagnetically quiet and disturbed periods

K. Unnikrishnan • Nonlinear Processes in Geophysics (2010)

In the present study, the latitudinal aspect of chaotic behaviour of ionosphere during quiet and storm periods are analyzed and compared by using GPS TEC time series measured at equatorial trough, crest and outside crest stations over India...

DOAJ Open Access (DOAJ) DOI: 10.5194/npg-17-765-2010

Interplanetary external driven quasidynamo as the origin of geomagnetic jerks correlated with length of day and gravity anomaly

Mohsen LUTEPHY • Contributions to Geophysics and Geodesy (2018)

We report phenomenological inevitable correlation between the Sun’s magnetic field oscillation through the Earth and the Jupiter, with sinusoidal geomagnetic jerks observed at the Earth, additionally aligned with the gravity and length of d...

DOAJ Open Access (DOAJ) DOI: 10.2478/congeo-2018-0002

Vulsino volcanic aquifer in Umbria Region : Hydrogeological survey for the characterization of the presence of arsenic and aluminium and the correct use of groundwater

Stefano Fratini, Fabrizio Maria Francesconi, Roberto Checcucci, Francesco Frondini et al. • Acque Sotterranee (2013)

In December 2009 and the first months of 2010, a large water crisis took place in the Orvieto area, because of sudden high concentration of aluminum (Al) in the groundwater of the vulsino aquifer. This represents a supply for Orvieto’s popu...

DOAJ Open Access (DOAJ) DOI: 10.7343/as-048-13-0075

Geochemical balance of the mineral fraction and statistical analyzes of the Ebolowa municipal lake’s sediments (central Africa): Implication for early diagenesis process

Akono Daniel Florent, Bokanda Ekoko Eric, Bisse Salomon Bertrant, Belinga Belinga Cedric et al. • Heliyon (2023)

The Ebolowa Municipal Lake (EML) (South Cameroon) in order to identify the early diagenesis processes taking place in the lake and the factors influencing them. To this end, 21 samples were collected. In situ, hydrogen potential, redox pote...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2023.e17617

Air distribution to reduce nitrogen oxide emissions in the furnace of a boiler with tangential combustion scheme

Andrey V. Gil, Kirill I. Maltsev, Nikita V. Abramov, Stanislav A. Puzyrev et al. • Известия Томского политехнического университета: Инжиниринг георесурсов (2024)

Relevance. Determined by the importance of analyzing the combustion characteristics and factors affecting the emission of nitrogen oxides (NOx) in the furnace chamber of pulverized coal-fired power boiler unit when installing tertiary air n...

DOAJ Open Access (DOAJ) DOI: 10.18799/24131830/2024/12/4883

Metallogenic potential and prospecting of orogenic gold deposits in the Shuihouling area of the Dabie Orogenic Belt: A geochemical evidence from stream sediment anomalies

Xiandong Luo, Lei Chen, Jinlai Tang, Xiaoyong Yang • Solid Earth Sciences (2026)

The Shuihouling ductile shear zone, located in the core of the Dabie Orogenic Belt spanning Anhui and Hubei provinces, is a key structural unit with notable mineral potential. Situated within the Wudang-Tongbai-Dabie Mo-REE-Au-Ag-Pb-Zn poly...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.sesci.2025.100278

Stress-dilatancy properties for fiber-reinforced sand

KONG Yu-xia , SHENG Fei-fan , WANG Hui-juan • Yantu gongcheng xuebao (2018)

It is observed that randomly distributed polypropylene fibers act to interlock particles and thus improve the mechanical behavior of the reinforced soils. The polypropylene fiber inclusion clearly increases the shear strength of soils, and ...

DOAJ Open Access (DOAJ) DOI: 10.11779/CJGE201812012

Sources of Contaminants of Emerging Concern in Groundwater of Barcelona Urban Area

D. Schmidlin, L. Scheiber, M. Teixidó, E. Vázquez et al. • Advances in Geosciences (2023)

Groundwater is a vital resource for the development of urban areas, where the problem focuses on the quantity and on the quality of this freshwater resource. Barcelona is a good example as because currently groundwater is used for irrigatio...

DOAJ Open Access (DOAJ) DOI: 10.5194/adgeo-59-59-2023

Compilation of Apatite Fission-Track Data from the Northeast Atlantic Realm: A Jigsaw Puzzle with Missing Pieces

Scott Jess, Heike Gröger, Bart Hendriks, Alexander Peace et al. • Lithosphere (2024)

The northeast (NE) Atlantic is one of the best-studied geological regions in the world, incorporating a wide array of geological phenomena including extensional tectonism, passive margin development, orogenesis, and breakup-related volcanis...

DOAJ Open Access (DOAJ) DOI: 10.2113/2023/lithosphere_2023_285

Mineralogy, geochemistry and fluid inclusion studies of Dagh-Dali Zn-Pb(±Au) Deposit, Northern Takab, Northwest Iran

Yousef Rahimsouri, Behzad Mehrabi, Shirin Alipour • پترولوژی (2018)

Dagh-Dali Zn-Pb deposit is located 40 km north of Takab city and it consist of Bekhair-Bolaghi and Baldirghani ore zones. Mineralization in Bekhair-Bolaghi is consist of galena, sphalerite, pyrite and chalcopyrite with disseminated texture ...

DOAJ Open Access (DOAJ) DOI: 10.22108/ijp.2019.114335.1110

Analytical solutions of steady-state temperature field for large-section freezing with rectangular layout of single-ring holes

HONG Zequn 1, SHI Rongjian 1, YUE Fengtian 1, HAN Lei 2 • Yantu gongcheng xuebao (2023)

The temperature field is the basis for assessing the mechanical state and water-sealing performance of the frozen wall, which is an important research direction of the artificial freezing theory. For the freezing pipes in the form of a clos...

DOAJ Open Access (DOAJ) DOI: 10.11779/CJGE20220700

Dynamic characteristics of unsaturated loess and their influences on ground vibration parameters of sites

WEI Lai 1, LU Yu-xia 1,2,3, ZHOU Zheng-hua 4, WANG Qian 1, 2, 3, YANG Bo 1, TANG Hong-min 1, LI Tong-lin 1 • Yantu gongcheng xuebao (2019)

The dynamic triaxial tests on the unsaturated loess in Xiji region of Ningxia under different water contents are carried out. Based on the analysis of the influences of water content on the dynamic characteristics of loess, the influences o...

DOAJ Open Access (DOAJ) DOI: 10.11779/CJGE2019S2037

Morphological Changes of the Lower Ping and Chao Phraya Rivers, North and Central Thailand: Flood and Coastal Equilibrium Analyses

Chaiwongsaen Nikhom, Nimnate Parisa, Choowong Montri • Open Geosciences (2019)

The Chao Phraya River flows in the largest river basin of Thailand and represents one of the important agricultural and industrial areas in Southeast Asia. The Ping River is one major upstream branch flowing down slope southwardly, joining ...

DOAJ Open Access (DOAJ) DOI: 10.1515/geo-2019-0013

Nature of Paleozoic Basement of the Catalan Coastal Ranges (Spain) and Tectonic Setting of the Priorat DOQ Wine Terroir: Evidence from Volcanic and Sedimentary Rocks

Pavel Kepezhinskas, Nikolai Berdnikov, Nikita Kepezhinskas, Natalia Konovalova et al. • Geosciences (2023)

The Paleozoic volcano-sedimentary rocks within the structural basement of the horst-and-graben system of the Catalan Coastal Ranges (CCR) are composed of black shale, volcaniclastic sediments, lava flows, sills and lithocrystalloclastic tuf...

DOAJ Open Access (DOAJ) DOI: 10.3390/geosciences13020031

Analyse des stratégies territoriales multi-niveaux au sein du « Collectif 5C », un réseau wallon de coopératives alimentaires

Florence Lanzi, Julien Noel, Kevin Maréchal • Belgeo (2021)

Our empirical study is based on the qualitative analysis of a Collective of cooperatives engaged in proximity-based food systems in Belgium. By comparing the territorial strategies of three member-cooperatives, we underline the diversity of...

DOAJ Open Access (DOAJ) DOI: 10.4000/belgeo.48963