Results 61 to 70 of about 168,359,556 (259)

Multichannel surface wave analysis in the context of shallow geophysical investigations

Academia Engineering
The application of multichannel surface wave analysis (MASW) has proven to be an effective method for non-invasive investigation of shallow geological structures, especially under complex conditions with heterogeneous layers and the presence of groundwater.
Ekrem Bektašević, Stjepan Strelec, Noris Sakić, Kemal Gutić   +3 more
openaire   +2 more sources

Nonlinear Site Response Analysis in District XIII, Budapest

Slovak Journal of Civil Engineering
Urban seismic hazard assessments must account for local soil conditions that can significantly alter ground motion characteristics. This study presents a nonlinear one-dimensional (1D) site response analysis for four locations within Budapest’s District ...
Al-Azazmeh Ahmad, Mahler András
doaj   +1 more source

Influences of variations in the sledgehammer trajectory and collinearity of the geophone array in an MASW survey on the shear-wave velocity profile

International Journal of Geo-Engineering, 2020
In professional activities aimed at seismic site classification, geophysical methods based on measurements of surface waves are often used to measure the shear-wave velocity (Vs), with the MASW survey being one of the most common techniques employed for ...
Edgar Giovanny Diaz-Segura
doaj   +1 more source

3D Printed Photon Shield Assembly for Low‐Noise Visual Stimulation During Two‐Photon Imaging in Mice

Advanced Materials Technologies, EarlyView.
We present the Photon Shield, an open‐hardware system for low‐noise two‐photon calcium imaging during visual stimulation in mice. Combining a 3D‐printed headplate and rail‐mounted shield substantially reduces stray‐light contamination, as quantitatively verified. Functional validation confirms reliable cortical responses. Open design files enable broad
Gergely Katona, Andrea Slézia, András Dávid, Ábel Petik, Dániel Hillier, István Ulbert, Attila Kaszás   +6 more
wiley   +1 more source

On‐Chip Photonic Neural Network Architectures

Advanced Optical Materials, EarlyView.
This review presents a comprehensive overview of on‐chip photonic neural network architectures, covering key photonic building blocks, representative network types, and emerging applications. Recent advances, implementation challenges, and future directions are examined, highlighting the potential of integrated photonics to enable ultrafast, energy ...
Seokjin Hong, Berkay Neseli, Seungyeon Cho, Seungsoo Lee, Yeonjun Kim, Seungyoon Choi, Hyo‐Hoon Park, Hamza Kurt   +7 more
wiley   +1 more source

Prospects of transition to European standards – features of Eurocode 8

Геофизический журнал
This paper analyzes the features of Eurocode-8, the European standard for earthquake-resistant construction, regarding seismic microzonation and seismic hazard assessment. The standard is compared to the methodology of similar studies in Ukraine.
I.A. Viktosenko, M.M. Dovbnich, M. Mazanec   +2 more
doaj   +1 more source

Estimation of bedrock depth for a part of Garhwal Himalayas using two different geophysical techniques

Geoscience Letters, 2018
It has now been well established that the depth of bedrock is a key parameter in assessing the impact of local site conditions on seismic hazard analysis.
Ritu Raj Nath, Gautam Kumar, M. L. Sharma, S. C. Gupta   +3 more
doaj   +1 more source

Donor‐Strength‐Driven Evolution From Charge‐Transfer to Polymethine Excited States in CurcBF2 Derivatives

Advanced Optical Materials, EarlyView.
Donor strength governs the excited‐state character and TADF behavior of donor‐acceptor‐donor borondifluoride curcuminoid derivatives. Increasing donor strength drives a transition from charge‐transfer TADF to a zwitterionic polymethine structure with predominantly local excited‐state emission and suppressed TADF.
Anthony D'Aléo, Guillaume Michaluszko, Amandine Coron, Dae‐Hyeon Kim, Alban de Gary, Danillo Valverde, Elena Zaborova, Emilie Couzigné, Lorry Engel, Loïc Mager, Gabriel Canard, Chihaya Adachi, Yoann Olivier, Jean‐Charles Ribierre   +13 more
wiley   +1 more source

Methodological procedure for applying geophysics to geotechnical studies in Luanda City, Angola

Minería y Geología, 2018
The use of the surface wave’s analysis in its passive and active variants was jointly assessed by the shallow seismic refraction. It allows determining dynamic parameters from the longitudinal and transverse velocities, obtained from seismic methods. For
Maria A. Pereira de Barros da Silva, Héctor M. Fernández-Núñez, João Júnior-Baptista, Gabriela J. Pereira-Teixeira Pires   +3 more
doaj  

Comparing the low-frequency content of exploration seismic source - receiver combinations using surface waves: a field study in Hussar, Alberta

Frontiers in Earth Science
The low-frequency content of seismic waves in exploration is of substantial value as it can benefit imaging and inversion by providing deeper penetration, broader-band energy, and wavelet stability. However, characterizing the factors contributing to low
Yu-Tai Wu, Robert R. Stewart
doaj   +1 more source