Article
Engineering, Geological
Enrico Paolucci, Anna Tanzini, Dario Albarello
Summary: The capability of the ambient vibration Horizontal to Vertical Spectral Ratios (HVSR) in identifying the main aspects characterizing the conventional 1D site response curve was explored by physical modelling. This approach avoids possible biases induced by data processing by focusing on the underlying physical phenomenon. The results indicate that HVSR peak frequency can reliably identify the 1D resonance frequency when the values of F-0 (the lowest resonance frequency) and F-d (the frequency associated with maximum peak amplitude) coincide. However, HVSR is less effective in identifying F-d when it is different from F-0 and is within the frequency range of 10-30 Hz.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Geochemistry & Geophysics
Tessa Williams, Norman Abrahamson
Summary: This article introduces a V-S profile correction method as an alternative to the traditional soil-over-rock approach for developing surface ground motions. The method involves performing two site response analyses and correcting the design spectrum based on the ratio of the results from the two analyses to address the limitations of the traditional approach.
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
(2021)
Article
Engineering, Civil
G. Tonuk, A. Ansal
Summary: The engineering purpose of a site-specific response analysis is to estimate the uniform hazard acceleration spectrum on the ground surface for a selected hazard level. The effects and differences in using two different scaling approaches are studied, and uncertainties related to site response analysis are considered as epistemic and aleatory uncertainties.
JOURNAL OF EARTHQUAKE ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Thanop Thitimakorn, Rungroj Arjwech, Sasikan Kupongsak
Summary: The shear-wave velocity (Vs) of soils in Nakhon Nayok City, Central Thailand were determined using the Multi-Channel Analysis of Surface Wave technique. The results showed that the city has NEHRP site classes C, D, and E, with soil class C found in the north and most of the residential area positioned on soil classes D and E. The amplification value of the soil in the study area ranged from 1.4 to 3.9, with higher values in the central and southwestern parts which consist of soft sediments.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Bikram Bhusal, Muhammad Aaqib, Satish Paudel, Hari Ram Parajuli
Summary: This study aims to estimate the seismic requirement for the monumental structure, Dharahara, in Kathmandu, Nepal. A probabilistic seismic hazard analysis was conducted to develop the elastic response spectrum. Both one-dimensional equivalent linear and non-linear ground response analyses were performed, considering the presence of soft soil in the region. Comparisons with existing seismic codes showed that the design response spectra fall within the range of similar soil classes.
GEOMATICS NATURAL HAZARDS & RISK
(2022)
Article
Environmental Sciences
Xueying Zhang, Allan C. Just, Hsiao-Hsien Leon Hsu, Itai Kloog, Matthew Woody, Zhongyuan Mi, Johnathan Rush, Panos Georgopoulos, Robert O. Wright, Annemarie Stroustrup
Summary: The study explores an integrated hybrid approach combining dispersion modeling and land use regression to predict daily NO2 concentrations with high spatial resolution in the New York tri-state area. The mixed model showed good prediction performance and R-LINE outputs significantly improved the CV R-2 in terms of overall, spatial, and temporal aspects. This hybrid approach allows for predicting daily NO2 at extremely high spatial resolution such as city blocks.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Civil
Chuanbin Zhu, Fabrice Cotton, Hiroshi Kawase, Annabel Haendel, Marco Pilz, Kenichi Nakano
Summary: This article tests and compares different estimation techniques in predicting the outcrop Fourier site responses, finding that the empirical correction method can better capture the characteristics of site responses.
EARTHQUAKE SPECTRA
(2022)
Article
Multidisciplinary Sciences
Jihye Seo, Deokhee Won
Summary: Recently, medium-sized earthquakes have occurred in Korea, leading to increased social concern. Due to its location not near the Ring of Fire, Koreans are not accustomed to earthquakes. However, research on seismic hazards in ports is incomplete, and it is important to actively study and improve understanding of seismic hazards in ports from various perspectives.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Geological
Gabriele Ameri, David Baumont, Hussein Shible, Frederic Ego, Isabelle Contrucci
Summary: This article focuses on the relationship between ground motions and different depths in the underground radioactive waste repository project in the eastern part of the Paris Basin. Through data collection and empirical modeling, it is found that the empirical transfer function is reliable for frequencies in the range of 0.5-10 Hz. Additionally, a range of site-specific parameters is proposed based on earthquake recordings, which can be used to improve the accuracy of seismic hazard assessment models.
BULLETIN OF EARTHQUAKE ENGINEERING
(2023)
Review
Chemistry, Multidisciplinary
Guangyu Qiu, Xiaole Zhang, Andrew J. deMello, Maosheng Yao, Junji Cao, Jing Wang
Summary: Airborne pathogens pose a significant threat to public health, and on-site airborne pathogen detection can be an effective non-pharmaceutical intervention strategy. However, there are still challenges that need to be addressed.
CHEMICAL SOCIETY REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Uma Shankar, Pawan Kumar Yadav, A. P. Singh, Arun Kumar Gupta
Summary: Microtremor measurements in and around Gorakhpur city reveal the presence of thick soft sediments with significant impedance contrasts and a predominant frequency of approximately 0.45 Hz at most sites. The ground vulnerability index values in the city are generally higher than 10.0, indicating a high earthquake risk.
JOURNAL OF EARTH SYSTEM SCIENCE
(2021)
Article
Chemistry, Analytical
Yan Zhang, Yun Han, Xiaoran Zou, Qinfeng Xu, Fei Ma, Chun-yang Zhang
Summary: A new fluorescent biosensor was successfully developed to efficiently and accurately detect 8-oxoG oxidative damage in DNA with high specificity and sensitivity. By combining single-molecule detection and hyperbranched signal amplification, the biosensor can accurately quantify the number of 8-oxoG damage bases in a single HeLa cell.
Article
Chemistry, Multidisciplinary
Xiao-Kun Zhang, Hong-Ming Yang, Meng-Ran Li, Xiao-Yi Gao, Xiao-Wei Sun, Xi-Feng Sun, Jin-Bao Tang
Summary: The study introduces a new method for orienting antibodies on the surface of liposomes, enhancing the detection efficiency of novel immunoliposomes with Fc region-specific and covalent conjugation for prostate-specific antigen. The immunoliposomes showed a significantly improved detection sensitivity, making them potential for sensitive detection of various biomarkers in complex serum samples.
Article
Geosciences, Multidisciplinary
Goutam Kashyap Boruah, Santanu Baruah, Sangeeta Sharma, Anurup Gohain Barua, Saurabh Baruah
Summary: An attempt has been made to estimate the site amplification factors of different geomorphological units in Shillong city, northeastern India, based on the distribution of peak ground acceleration (PGA) due to maximum credible earthquakes that originated in nearby major faults. The study found that the highly dissected land exhibited the maximum amplification, while the high plateau segment had the least amplification. Additionally, the effective ground motion on the surface increased with the magnitude of the earthquake.
JOURNAL OF EARTH SYSTEM SCIENCE
(2022)
Article
Engineering, Civil
Renmin Pretell, Norman A. Abrahamson, Katerina Ziotopoulou
Summary: This article aims to reduce the errors in one-dimensional site response analysis (1D SRA) by using small-strain damping profiles factored by a damping multiplier (D-mul) and randomized shear-wave velocity (V-S) profiles. The study classifies 534 downhole sites into either one-dimensional-like or three-dimensional-like based on observed transfer functions. The results show that conducting 1D SRAs with D-mul = 3 and s(ln V S) = 0.25 leads to more accurate site response estimates.
EARTHQUAKE SPECTRA
(2023)
