Review
Plant Sciences
Jiaming Wang, Neil C. Turner, Hao Feng, Miles Dyck, Hailong He
Summary: Accurate measurement of plant transpiration is crucial for understanding plant water use and its impact on regional and global climate. Heat tracer-based sap flow (HTSF) techniques are widely used for estimating plant transpiration at the individual plant level. However, there is a lack of comprehensive analysis on HTSF methods. This study reviews the theories and categories of various HTSF methods and conducts a bibliometric analysis to explore the use of HTSF methods in measuring plant transpiration.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Construction & Building Technology
M. Malagoli, S. Gallego, V. Proquez, S. Ginestet, G. Escadeillas
Summary: This study presents a perforated heat flux plate for building use and compares its performance with traditional full surface plates. Laboratory calibration tests showed that the new perforated CAPTEC (R) plate performed comparably to a solid, standard plate. However, in-situ tests with surface-mounted sensors revealed that the CAPTEC (R) plates had poor thermal contact and edge effects in the perforations, leading to an offset factor for the output voltage. The presence of perforations did not significantly improve evaporation or condensation on the wall. A basic simulation demonstrated the edge effects caused by the perforations, and an experimental correction factor for field measurements was proposed.
ENERGY AND BUILDINGS
(2023)
Article
Engineering, Civil
Nataline Simon, Olivier Bour, Nicolas Lavenant, Gilles Porel, Benoit Nauleau, Maria Klepikova
Summary: This study investigates the feasibility of using active-Distributed Temperature Sensing (DTS) measurements to monitor and quantify groundwater flux variations over time. The results show that temperature elevation is sensitive to flow conditions and can be used to characterize groundwater flux variations. The approach offers the possibility of continuously monitoring flux variations under certain flow conditions.
JOURNAL OF HYDROLOGY
(2023)
Article
Thermodynamics
L. Evangelisti, C. Guattari, E. De Lieto Vollaro, F. Asdrubali
Summary: The thermal performance of building components is important and can be measured on-site. The commonly used HeatFlow Meter (HFM) method has been widely applied, but few studies have examined the convergence criteria suggested by the ISO 9869-1. This study evaluated the convergence criteria using the progressive average method in a case study of a small-scale building near Rome, Italy.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Ali M. Radwan, Sayed Bedair, Khamis Mansour, Kamal Abdelrahman, Mohamed Rashwan, Federica Sparacino, Mohammed S. Fnais
Summary: The study conducted extensive geophysical and geodetic measurements to evaluate groundwater aquifers, trace basement relief, and detect igneous intrusions and structural elements affecting groundwater occurrence. The findings revealed main faults, igneous rock intrusions, and variations in basement rock depths. High horizontal movements and shear strain rates were concentrated at the southeast, with stress accumulation along observed faults and groundwater aquifers. The results confirmed the presence of two aquifers and the Nubian sandstone aquifer as the main water source in the region, affecting groundwater availability.
JOURNAL OF KING SAUD UNIVERSITY SCIENCE
(2021)
Article
Construction & Building Technology
Luca Evangelisti, Claudia Guattari, Lucia Fontana, Roberto De Lieto Vollaro, Francesco Asdrubali
Summary: The Heat flow Meter (HFM) method is a non-destructive technique used to evaluate thermal transmittance. Aging and weathering effects in old buildings can influence thermal performance, altering the thermophysical properties of materials. Architectural elements apparently identical may be different from a thermal point of view.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Water Resources
A. A. Alabi, S. A. Ganiyu, O. A. Idowu, A. F. Ogabi, O. Popoola
Summary: The study aimed to delineate aquifer regions and provide information on the subsurface lithology of Moloko-Asipa in southwestern Nigeria. The results revealed poor groundwater exploration potential and aquifer protective capacity in the study area.
APPLIED WATER SCIENCE
(2021)
Article
Construction & Building Technology
Francesco Nicoletti, Mario Antonio Cucumo, Natale Arcuri
Summary: This paper aims to compare the accuracy and test duration of different methods for in-situ measurement of wall thermal conductance. The study reveals that the commonly used method (HFM) yields high errors when the heat flow meter is on the surface opposite the insulation. The dynamic method described in the UNI ISO 9869-1 standard is inadequate for abrupt temperature changes.
ENERGY AND BUILDINGS
(2023)
Article
Construction & Building Technology
Benat Arregi, Roberto Garay-Martinez, Juan Carlos Ramos
Summary: There is a growing interest in characterizing the thermal performance of building envelopes under realistic weather and indoor conditions. This study analyzes data from a full-scale test of four uninsulated concrete panels using different models. The results show that the distributed capacitance model provides consistent estimates for thermal capacity, while steady-state and lumped capacitance models suit different temperature differences and stability conditions. This research can provide guidance for using dynamic methods with physical interpretation and serve as a basis for further research on more complex walls and design scenarios involving thermal insulation.
ENERGY AND BUILDINGS
(2023)
Review
Water Resources
Wilfred Nwabueze Igboama, Olaide S. Hammed, Julius O. Fatoba, Morufu T. Aroyehun, John C. Ehiabhili
Summary: This study reviews the impact of groundwater contamination due to dumpsites using geophysical and physiochemical methods. The geophysical methods used include Electrical Resistivity, Electromagnetic Induction, and Seismic Refraction. The results show zones of low resistivity as leachate plume and fractured subsurface as contaminant pathways. Physiochemical analyses indicate severe contamination of groundwater due to organics, salts, and heavy metals. The age of the dumpsite and migration distance of the leachate are important factors to consider.
APPLIED WATER SCIENCE
(2022)
Article
Chemistry, Physical
Aleksandr Vasilev, Tommy Lorenz, Vikram G. Kamble, Sven Wiessner, Cornelia Breitkopf
Summary: Thermal conductivities of polybutadiene rubbers crosslinked by 2.4 and 2.8 phr of sulfur were found to be functions of temperature through molecular dynamics simulations, showing good agreement with literature and experimental data. Heat transport in rubbers was revealed to be governed by deformations of polymeric chains, as analyzed from the heat flux autocorrelation functions.
Article
Geosciences, Multidisciplinary
Nataline Simon, Olivier Bour
Summary: Active distributed temperature sensing (ADTS) experiments are useful for estimating thermal conductivities of the subsurface and groundwater flows. However, data interpretation can be challenging due to the large amount of data and lack of automated analysis tools. To address this, we developed the ADTS Toolbox, which contains MATLAB codes for automated interpretation and calculation of ADTS measurements.
Article
Geography, Physical
Mirko Pavoni, Jacopo Boaga, Alberto Carrera, Giulia Zuecco, Luca Carturan, Matteo Zumiani
Summary: Frozen layers within rock glaciers are typically considered as impermeable layers. Previous studies have mainly relied on analyzing the geochemical characteristics of spring waters to define this behavior. This study experimentally confirmed this assumption for the first time by conducting an infiltration test in a rock glacier in the Southern Alps, Italy. Time-lapse electrical resistivity tomography (ERT) technique was used to monitor the infiltration of 800 L of saltwater released on the surface, and the 24-hour ERT monitoring revealed that the injected water was unable to infiltrate into the underlying frozen layer.
Article
Health Care Sciences & Services
Panagiotis Sakkatos, Andrew Williams
Summary: This study compared a new digital peak flow meter (SPF) with a lab spirometer and found good agreement between the two devices. Due to a small sample size, firm conclusions about the accuracy of SPF could not be drawn, but the promising results encourage further testing in the future.
Article
Thermodynamics
Ismael Sanchez-Calderon, Beatriz Merillas, Victoria Bernardo, Miguel Angel Rodriguez-Perez
Summary: Developing advanced, highly insulating materials for reducing heat losses in buildings is crucial. A new methodology for measuring the thermal conductivity of small prototypes of thermal insulating materials has been developed and validated in this study. The results demonstrate the accuracy of the self-developed method in determining the thermal conductivity of samples with small dimensions using a steady-state condition.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Yue Liu, Chenming Zhang, Xiaocheng Liu, Congrui Li, Alexander Sheuermann, Pei Xin, Ling Li, David A. Lockington
Summary: The movement and discharge of salts in tidal wetland ecosystems play a crucial role in maintaining their ecological balance. This study found that hypersaline porewater plumes form in the upper intertidal zone of the wetland, while fresher porewater zones with salinity close to seawater exist near the creek and in the supratidal zone. The discharge of hypersaline porewater occurs predominantly at the creek bank, and salt discharge is driven by density gradients and tidal-induced porewater circulation. This mechanism helps remove salts accumulated in the wetland due to evaporation and prevents salt flat formation and marsh plants dieback.
WATER RESOURCES RESEARCH
(2022)
Article
Environmental Sciences
Jipeng Shan, Zhenlei Yang, Xingxing Kuang, Ling Li, Junguo Liu
Summary: This study aims to investigate the performances of seven Weibull distribution models for predicting relative hydraulic conductivity (RHC). By comparing with other six models, it is found that the proposed model performs the best in RHC prediction, with a 16.1% improvement compared to existing models. The proposed model can be used for RHC parameterization in water flow modeling in the unsaturated zone.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Civil
Guangqiu Jin, Haiyu Yuan, Guangming Zhang, Zhongtian Zhang, Chen Chen, Hongwu Tang, Ling Li
Summary: This study investigates the factors influencing hyporheic exchange by altering the geometric characteristics of the streambed. The results show that hyporheic exchange is stronger in wave-like bedforms compared to triangular bedforms, and increasing the bed height accelerates hyporheic exchange processes. A linear relationship is also found between the depth and area of the hyporheic zone.
JOURNAL OF HYDRO-ENVIRONMENT RESEARCH
(2022)
Article
Environmental Sciences
Peiyuan Zhu, Xiaogang Chen, Yan Zhang, Qianyu Zhang, Xuan Wu, Huawen Zhao, Liang Qi, Xuexin Shao, Ling Li
Summary: This study estimated porewater exchange, carbon outwelling, and greenhouse gas emissions in a subtropical multi-species saltmarsh and found that porewater-derived dissolved inorganic carbon (DIC) outwelling is an important long-term carbon sink, providing a scientific basis for the protection and restoration of saltmarshes in the context of global climate change.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Geological
Guanxi Yan, Zi Li, Thierry Bore, Sergio Andres Galindo Torres, Alexander Scheuermann, Ling Li
Summary: This study applied the Shan-Chen multiphase multicomponent lattice Boltzmann method (SC-LBM) to investigate two-phase displacement in two-dimensional porous media. The simulation results revealed the dynamic nonequilibrium effects of multistep pressure boundary conditions, which could be alleviated and even eliminated through finer adjustments of pressure over more steps.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Environmental Sciences
Chengji Shen, Yu Fan, Xibin Wang, Wenjing Song, Ling Li, Chunhui Lu
Summary: Submarine groundwater discharge is a crucial pathway for land-derived chemicals to enter the oceans. This study investigates the effects of land reclamation on flow and mixing processes in a nearshore subterranean estuary through laboratory experiments and numerical simulations. The study finds that reclamation soil alters the tide-driven upper saline plume and affects the freshwater discharge zone and saltwater wedge.
WATER RESOURCES RESEARCH
(2022)
Article
Geochemistry & Geophysics
Guanxi Yan, Zhixin Cheng, Ye Ma, Alexander Scheuermann, Ling Li
Summary: The results show that salt and surfactant can minimize bubble size with increasing solute concentration, and the surfactant outperforms salt. The gas injection rate has minor effects on bubble size variation compared to solute concentration. Additionally, the concept of CCIR was proposed to describe how gas injection rate influences the standard deviation of BSD.
Review
Green & Sustainable Science & Technology
Yuxin Fang, Lingwei Kong, Pei Zhang, Lu Zhang, Huawen Zhao, Xiaoqin Xiang, Shuiping Cheng, Hangjun Zhang, Feng Ju, Ling Li
Summary: Clogging is a key problem in constructed wetland (CW) technology, but there is a lack of systematic research on its evolution, hot spots, frontiers, and classifications. This study conducted a comprehensive review using published references and analyses to bridge these research gaps. The findings provide insights into the hot directions and cutting-edge trends of CW clogging, as well as methods for monitoring and evaluating the problem.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Civil
Guanxi Yan, Thierry Bore, Stefan Schlaeger, Alexander Scheuermann, Ling Li
Summary: This study compared the soil water retention curves of different types of sands measured by different methods and found discrepancies between the methods with the help of spatial time domain reflectometry. The fineness and grading of the soil can affect the results of the soil water retention curve.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Civil
Xiaogang Chen, Peiyuan Zhu, Yan Zhang, Ling Li
Summary: Seasonal rainfall, known as plum rain, has the potential to influence greenhouse gas dynamics in saltmarshes. However, there have been no reported studies on its effects. This study quantified porewater exchange and greenhouse gas fluxes in a saltmarsh over a tidal cycle during the plum rain season. The results show that plum rain-derived porewater exchange significantly increased CO2 inventory and reduced pH, potentially contributing to coastal acidification.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Shengjie Hu, Zhenlei Yang, Sergio A. G. Torres, Zipeng Wang, Ling Li
Summary: Through a systematic investigation of 23,259 lakes in 11 hydroclimatic zones of China, it was found that there are differences in the fractal scaling relationships between the morphometric and hydrological parameters of lakes. While lake morphometric parameters follow a power law distribution, lake hydrological parameters do not show a power law relationship with lake area. The study also revealed that the applicability of the power law distribution for lake area varies across different regions and is significantly influenced by human activities.
Article
Environmental Sciences
Chengji Shen, Yu Fan, Yongqing Zou, Chunhui Lu, Jun Kong, Yue Liu, Ling Li, Chenming Zhang
Summary: Salt pans are important features in coastal marshes and their formation is influenced by factors such as evaporation rate, tidal amplitude, and marsh platform slope. This study found that salt pans tend to form in the lower supratidal zone due to sustained evaporation, while they can hardly grow in the intertidal zone due to regular tidal flushing. The decrease in potential evaporation rate, tidal amplitude, and/or marsh platform slope strengthens the hydraulic connection between the marsh surface and underlying watertable, resulting in thicker and wider salt pans. These findings contribute to a better understanding of marsh eco-hydrology and provide guidance for preventing their degradation.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Tingchang Yin, Teng Man, Ling Li, Sergio Andres Galindo-Torres
Summary: We propose a finite-size scaling hypothesis to predict the global permeability of fracture networks. To validate the hypothesis, we generate numerous discrete fracture networks and numerically calculate the permeability. Our results show that the dimensionless permeability, scaled by moments of local conductivity and fracture sizes and corrected by two stereological ratios, can capture variations in fracture attributes. The universal form obtained in this study can also explain contradictory observations regarding the permeability and domain size of fracture networks. We demonstrate how a clear transition point is obtained from this universal form, where the permeability remains constant with changing domain size. This study provides a solid theoretical foundation to understand the connection between fracture attributes and field-scale hydraulic properties.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Engineering, Civil
Zhenlei Yang, Zi Li, Xin Tong, Shengjie Hu, Jun Wang, Shuting Ji, Ling Li
Summary: Accurate descriptions of soil hydraulic properties require consideration of both capillary and noncapillary processes. This study extended the Weibull distribution models to complete dryness and compared their performance with the original models. The improved models effectively described the hydraulic properties from saturation to complete dryness. The physically-based approach developed in this study allows for reliable prediction of hydraulic conductivity without the need for fitted conductivity parameters.
JOURNAL OF HYDROLOGY
(2023)
Article
Limnology
Lucheng Zhan, Pei Xin, Jiansheng Chen, Xiaogang Chen, Ling Li
Summary: This study reveals the presence of numerous highly saline artesian springs in a salt marsh system in East China. Multiple methods were used to determine the origin and trajectory of these springs, suggesting that they represent a long-term redistribution process of ancient marine water trapped in the unconfined aquifer. This new pattern of groundwater flow has significant implications for studies on submarine groundwater discharge in similar coastal systems.
LIMNOLOGY AND OCEANOGRAPHY LETTERS
(2023)
