Conventional processing algorithms for acoustic logging data, based on propagation analysis of guided modes, have sufficient limitations when underground formation is anisotropic or borehole cross-section is essentially non-circular, as there is no analytical estimates ...

The huge performance enhancements of the organometal halide perovskite solar cells (OHPSCs) have appealed enormous attention within recent ten years. Although the rapid growth of the device power conversion efficiency (PCE) has attained over 25%, the contamination of he...

Knowledge of reservoir rock wettability is crucial for the understanding of fluid displacement mechanisms and for adopting feasible solutions to enhance oil recovery. Highly sensitive to the strength of fluid–rock interactions, nuclear magnetic resonance (NMR) measureme...

The Tibetan Plateau and its surroundings contain the largest number of glaciers outside the polar regions. In the past 100 years, the glaciers on the Tibetan Plateau and its surrounding areas have been retreating slowly. Since the 1990s, however, the state of glaciers h...

Abstract Efficient charge separation and rapid interfacial reaction kinetics are crucial factors that determine the efficiency of photocatalytic hydrogen evolution. Herein, a fascinating 2D heterojunction photocatalyst with superior photocatalytic hydrogen evolution per...

Liquid nitrogen freeze–thaw has been used in oil, shale gas and coalbed methane exploitation as an efficient fracturing technology. This paper aimed to study the effect of different coal ranks and liquid nitrogen soaking times on the temperature distribution of coal sam...

In the study of mine GIS index optimization of mining decision support system, in order to reduce the overlap between the index nodes, in this paper we propose the intensity of polygon to ensure the index nodes have good geometry. In this paper, we also put forward arti...

The accretionary prism in the subduction zone, which consists of thick low-velocity oceanic sediments, significantly affects the propagation of seismic waves for shallow, offshore earthquakes, including large interplate earthquakes. In order to simulate long-period (> 5...

Medical magnetic nanomaterials refer to magnetic nanomaterials owning specific biological effects and therapeutic functions which are promising in clinical medicine. A good case in this point is the iron-based magnetic nanomaterials. As the only inorganic nanomaterials ...

A new efficient technique has been developed to interpret self-potential data from different mineralized sources (horizontal cylinder, vertical cylinder, sphere, and 2-D inclined sheet). This technique is based on the first horizontal gradient filter and particle swarm ...

Machine learning using convolutional neural networks (CNNs) is investigated for the imaging of sparsely sampled seismic reflection data. A limitation of traditional imaging methods is that they often require seismic data with sufficient spatial sampling. Using CNNs for ...

Abstract The pyrolysis of zeolitic imidazolate frameworks (ZIFs) is becoming a popular approach for the synthesis of catalysts comprising porphyrin-like metal single atom catalysts (SACs) on N-doped carbons (M-N-C). Understanding the structural evolution of M-N-C as a f...

We would like to make some comments on the paper by Hamidatou et al. (2019). Initially, these comments are motivated to reveal that, previous results on probabilistic seismic hazard analyses, some of them computed and published by our research group, are wrongly quoted ...

Abstract Hippocampal morphological change is one of the main hallmarks of Alzheimer's disease (AD). However, whether hippocampal radiomic features are robust as predictors of progression from mild cognitive impairment (MCI) to AD dementia and whether these features prov...

The factors affecting permeability change under repeated mining of coal seams are important study aspects that need to be explored. This study combined various stress variation characteristics of protective seam mining and simplified the stress path of repeated mining i...

There have been many studies to improve visibility forecast skills using numerical models, but their performance still remains behind the forecast skills for other meteorological phenomena. This study attempted to improve visibility forecasts using a newly established a...

Urban lakes have become increasingly important in the planning of urban ecology, green infrastructure and green areas in European cities. This paper describes the chemical, isotope and microbial features of Lake Bullicante, a small artificial lake located within the urb...

AbstractAugust–July precipitation has been reconstructed back to AD 1724 for the Mohe region in the northern Greater Higgnan Mountains, China, usingPinus sylvestrisvar. mongolica tree-ring width. The reconstruction explains 39% of the variance in the precipitation obser...

Abstract The globally increasing demands for polymer materials stimulate the significantly intense attention focused on the Lewis pair polymerization (LPP) of various polar vinyl monomers catalyzed by Lewis pairs (LPs) composed of Lewis acid (LA) and Lewis base (LB). Ac...

Abstract Complex geology, post-depositional alteration, and physicochemical features of sediments and pore fluids often pose problems to reservoir development planning. Meanwhile, lapse-time (4D) shallow resistivity surveys may be a good tool to monitor waterflooding us...

Our study interprets large-scale gravity data to delineate concealed banded iron formation (BIF) iron mineralization in India's Rajasthan province. The study area belongs to the Bharatpur, Dausa, and Karauli districts of Rajasthan. We measured 1462 gravity readings to u...

Carboxylate-based metal–organic frameworks (CMOFs) have received considerable attentions for their high stability, catalytic activity, and porosity. However, synthesis of CMOFs requires high temperature, pressure, and long reaction time. Here, we explored the activity o...

The impact of deploying a flow-dependent ensemble error covariance in Weather Research and Forecasting (WRF) three-dimensional variational (3DVAR) data assimilation (DA) system is examined for short-range rainfall forecasts during an Indian summer monsoon season. The fl...

People living standards have been improved as the service industry advancements, which has become an important part of national economy. Catering industry as one of the service industry has its unique service management model. With the development of economy, catering i...

w-Projection is a wide-field imaging technique that is widely used in radio synthesis arrays. Processing the wide-field big data generated by the future Square Kilometre Array (SKA) will require significant updates to current methods to significantly reduce the time con...

In this article, the Standardized Precipitation Index (SPI), at both the short- and long-time scale, has been evaluated to analyse drought in the Sardinia region (Italy). In fact, while the short-time scale SPI describes droughts that affect plant life and farming, the ...

This study investigates the potential for seismic seiches in Lake Tekapo, New Zealand, triggered by ground shaking from an Mw8.2 Alpine Fault earthquake. Synthetic ground motions are used as a forcing boundary to drive lake water motions by further developing a tsunami ...

Exploring the spatial relationships between various geological features and mineralization is not only conducive to understanding the genesis of ore deposits but can also help to guide mineral exploration by providing predictive mineral maps. However, most current metho...

The virus caused coronavirus disease 2019 (COVID-19 virus), also called severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the seventh coronavirus that can infect humans, and belongs to the genus β-coronavirus in the family Coronaviridae . As of 5 November...

Under the new business environment, getting electricity sheds light on how essential it is to measure customer connection, which is complicated by supply reliability, procurement practices, application time, technical standards, etc. In an effort to ensure this permanen...

A variety of factors contribute to the proper and efficient evaluation of geochemical programs including sampling medium, sample size and sample fraction, sampling density, digestion procedure, and analytical techniques. Among the aforementioned factors, sampling densit...

Oil shale impurities prevent its direct usage as a source of energy. Removing or reducing of these impurities before retorting can reduce the cost of oil shale processing. In that regard, pretreatment of oil shale by flotation represents one of the favorable solutions. ...

Metal-nitrogen doped carbon catalysts (M-N/C) with abundantly accessible M-Nx sites, particularly single metal atom M-N/C (SAM-N/C), have been developed as a substitute for expensive Pt-based catalysts. These catalysts are used to increase the efficiency of otherwise sl...

This work proposes a new approach, based on Bayesian updating and extreme value statistics to determine the maximum magnitudes for truncated magnitude-frequency distributions such as the Gutenberg Richter model in the framework of Probabilistic Seismic Hazard Analyses. ...

Purpose Velocity slipping model, based on the stratification theory (the film in inflatable support area of aerostatic guide way was divided into near wall layer, thin layer and continuous flow layer in the direction of height), was established, and the model was combi...

The Stylite Tower is part of the UNESCO archaeological site of Umm ar−Rasas (Jordan). It represents a unicum in its category and has a fundamental value for the Jordanian Cultural Heritage as a symbol and an emblem of Jordan’s history and culture. The monument has evide...

A dominant source of error in space-based geodesy is the tropospheric delay, which results in excess path length of the signal as it passes through the neutral atmosphere. Many studies have addressed the use of global weather models and local meteorological observations...

The region of Bohemian Paradise in NE Bohemia is the most varied sandstone landscape in the Bohemian Cretaceous Basin . This is caused by the complex stratigraphy of Cretaceous (Upper Turonian to Coniacian) sediments, abrupt lateral changes in the development of sandsto...

Abstract An accurate measurement of the refractive index is necessary for the optical design of both deep ultraviolet laser diodes and light-emitting diodes. Generally, the refractive indices along different crystallographic axes of anisotropic thin films are measured u...

During production from naturally fractured reservoirs, complex interactions exist between matrix blocks and gas-filled fractures in the gas invaded zone. Considerable efforts such as defining complicated transfer functions between matrix blocks and the fractured medium ...