Konrad Celtis, King Matthias, and the academic movement in Hungary

Kiss, Farkas Gábor

doi:10.1556/044.2018.32.1.3

Cited by 3 publications

(4 citation statements)

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“…The accuracy of the evaluation is greatly aided by laboratory determinations of the velocities of the P and S waves performed on the core samples because this is the only way to determine the exact acoustic velocity of each rock. The advantage of ultrasonic measurements in the laboratory is that the effects of individual physical conditions (such as pressure, temperature, pore-filling) can be modeled under controlled conditions, and the disadvantage is that the core samples represent only a very small representation of subsurface formations [30]. The information obtained from laboratory tests is essential for understanding the properties of subsurface formations.…”

Section: Figure 10 Stack Inlinementioning

confidence: 99%

Main Aspects of the Implementation of Seismic Projects

Turai-Vurom

2022

Geosciences and Engineering

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The paper presents the planning and workflow of field seismic explorations. Seismic data acquisition has developed significantly over the last 15 20 years; the paper covers the most important changes and developments of this period and goes step-by-step through the process of implementing a land 3-D seismic project. In order to increase efficiency, the different cost reduction technologies appeared on the vibroseis source side in 3-D seismic, and wireless field technology is becoming more and more accepted among the forms of seismic data acquisition. The advances in seismic acquisition, including simultaneous source acquisition, wireless channel systems, and exponential growth in seismic channel count, are revolutionizing surveys. Improved receiver sampling along with high productivity are the drivers for seismic technology today, which means smaller, lighter and less power-hungry equipment, while also increasing channel counts, minimizing system related remediation and HSE risk. A new era in land 3-D seismic surveys has arrived in Europe and in Hungary, too. The author used her experience in the implementation of many domestic and foreign 2-D and 3-D land seismic projects as an observer, shift leader, field manager, and then as a project leader in Europe. She combines these practical experiences with specific aspects of field project design and implementation. The aspects covered in this paper contribute to the professionally efficient and financially profitable implementation of field projects.

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Section: Figure 10 Stack Inlinementioning

confidence: 99%

Main Aspects of the Implementation of Seismic Projects

Turai-Vurom

2022

Geosciences and Engineering

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“…Farming activities mainly focus on the production of common carp (Cyprinus carpio), practiced in artificial, extensive pond systems. These systems usually consist of multiple, soil-based ponds with around 30-40 hectares and between 1 and 2 m deep [35]. Some bigger fishpond systems in Hungary have more than 2000 hectares.…”

Section: Characteristics Of Hungarian Aquaculturementioning

confidence: 99%

“…Together with common carp, additional fish species are also raised in polycultures, such as European catfish (Silurus glanis), silver carp (Hypophthalmichthys molitrix), grass carp (Ctenopharyngodon idella), zander (Sander lucioperca), and northern pike (Esox lucius) [36]. In 2018, Hungary had 26,500 hectares of fishponds that produced approximately 22,500 tons of fish, around 80% of which was common carp [35].…”

Section: Characteristics Of Hungarian Aquaculturementioning

confidence: 99%

Expert Knowledge and Perceptions about the Ecosystem Services and Natural Values of Hungarian Fishpond Systems

Palásti

Kiss

Gulyás

et al. 2020

Water

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In the past few decades, multiple theoretical studies have highlighted the diverse capabilities of freshwater fishpond systems in the provision of water-related ecosystem services (ESs). However, practical studies to confirm this statement are still lacking in the scientific literature compared to other ecosystems. In this paper, we reveal the ESs of three semi-intensively managed fishpond systems in Hungary and assess the knowledge and perceptions of local experts about them and their main interactions. Between 2017 and 2019, we performed participatory research on the fishpond systems of Biharugra, Akasztó, and Szeged, conducting a total of 22 structured interviews with experts from all related stakeholder groups. Based on the interviews, we identified 16 actively used ESs (4 provisioning, 7 regulating, and 5 cultural ESs) and also revealed 19 main forms of impacts (14 positive and 5 negative) related to them. Despite their different perceptions and demands associated with fish farms, almost every expert articulated the role of semi-intensive fish farming in the sustenance of water-related natural values and ecosystem services, endangered by the ongoing effects of global warming. Besides confirming the theoretical statements of previous studies, these findings could also provide information for subsequent land-use planning, with the aim of creating more sustainable, multifunctionally used fishpond systems.

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“…New petrophysical model was introduced (Dobróka and Somogyi Molnár, 2012). The new model has been used to describe both the pressure dependence of P waves (Somogyi Molnár et al, 2015) and that of S waves (Kiss, 2018). The new models were further developed for twocomponent (Somogyi Molnár et al, 2019) and multi-component (Dobróka et al, 2022) relaxation cases.…”

Section: Introductionmentioning

confidence: 99%

Determining the quality factor of sandstone using acoustic laboratory measurements

Turai-Vurom,

Dobróka

2023

MDT

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The paper presents the velocity-pressure and quality factor-pressure dependences of a sandstone sample, using the Fourier spectra of the complete waveforms of the P waves measured in laboratory. Measurements were performed on sandstone and (a reference) aluminum sample at 40 different pressures. The professional literature uses approximate methods to determine the value of the quality factor. The spectral ratio method was used to evaluate our measurements. The measured velocity and quality factor data were processed using inversion methods. The results showed that both the velocity-pressure and the quality factor pressure dependence can be well-described utilizing the double relaxation model in forward modeling.

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Konrad Celtis, King Matthias, and the academic movement in Hungary

Cited by 3 publications

References 0 publications

Main Aspects of the Implementation of Seismic Projects

Main Aspects of the Implementation of Seismic Projects

Expert Knowledge and Perceptions about the Ecosystem Services and Natural Values of Hungarian Fishpond Systems

Determining the quality factor of sandstone using acoustic laboratory measurements

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