Results 21 to 30 of about 6,801,451 (249)

Determination of groundwater solute transport parameters in finite element modelling using tracer injection and withdrawal testing data

open access: yesJournal of Groundwater Science and Engineering, 2021
The groundwater tracer injection and withdrawal tests are often carried out for the determination of aquifer solute transport parameters. However, the parameter analyses encounter a great difficulty due to the radial flow nature and the variability of ...
Van Hoang Nguyen
doaj   +1 more source

Perfluoro(Methylcyclohexane) Tracer Tagging Test and Demonstration [PDF]

open access: yes, 2000
On February 14 and 15, 2000, a demonstration of current perfluorocarbon tagging technology and the future potential of these methods was held at Oak Ridge National Laboratory (ORNL). The demonstration consisted of a brief technical discussion followed by
Sigman, M.E.
core   +1 more source

Analysis and prospects for the development of indicator (tracer) methods for studying oil and gas reservoirs

open access: yesИзвестия Томского политехнического университета: Инжиниринг георесурсов
Relevance. Rapid development of the methodology for conducting and interpreting the results of tracer studies, which requires systematization of data.
Vyacheslav V. Verzhbitsky   +4 more
doaj   +1 more source

Computing Localized Breakthrough Curves and Velocities of Saline Tracer from Ground Penetrating Radar Monitoring Experiments in Fractured Rock

open access: yesEnergies, 2021
Solute tracer tests are an established method for the characterization of flow and transport processes in fractured rock. Such tests are often monitored with borehole sensors which offer high temporal sampling and signal to noise ratio, but only limited ...
Peter-Lasse Giertzuch   +5 more
doaj   +1 more source

Exploration of suspected poorly sealed borehole based on comprehensive analysis method

open access: yesMeikuang Anquan, 2021
A comprehensive analysis method combining pumping test and tracer test is adopted to investigate whether 73159 suspected poorly sealed borehole as artificial water conducting channel between Quaternary aquifer and mined-out area in Laogongyingzi mine ...
JI Yadong
doaj   +1 more source

Site tracing experiment on the diffusion range of regional grouting renovation under the coal seam floor aquifer

open access: yesMeitan xuebao
In recent years, to liberate coal resources from high pressure limestone water on the coal seam floor, North China Coalfields have generally adopted surface directional drilling technology to carry out regional grouting reinforcement and transformation ...
Yan GUO   +12 more
doaj   +1 more source

Samples Preparation of Breath Test 14C Tracer for Accelerator Mass Spectrometry

open access: yesJournal of Isotopes, 2017
Carbon plays an important role in the metabolism of plants and human. Radiocarbon (14C) is an ideal tracer for vivo human metabolism, disease diagnosis and organ function assessment studies.
ZHANG Hui1,2;WANG Xiao-ming1;PANG Yi-jun1;ZHAO Qing-zhang1;CHEN Juan1;CHEN Bao-jun1;YANG Xian-lin1;HE Ming1;JIANG Shan
doaj   +1 more source

Experimental Study on Solute Transport Characteristics of Filling Fracture Based on Self-potential

open access: yes工程科学与技术, 2020
In order to describe the solute transport process and characteristics in the filling fracture, the solute transport test model of filling fracture was designed and manufactured.
Chunlu JIANG   +4 more
doaj  

Evidence‐Informed Multidisciplinary Consensus Guidance for the Psychosocial Care of Adolescents With High‐Risk Cancer: Recommendations From the Italian Association of Pediatric Hematology and Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Adolescents with high‐risk cancer face complex developmental, psychosocial, and ethical challenges that extend beyond disease‐directed treatment. Although international recommendations exist for communication, psychosocial care, pediatric palliative care, survivorship, and shared decision‐making, these have largely evolved within ...
Johanna M. C. Blom   +15 more
wiley   +1 more source

Research progress on temperature field evolution of hot reservoirs under low-temperature tailwater reinjection

open access: yesJournal of Groundwater Science and Engineering
This paper focuses on the study of the evolutionary mechanism governing the temperature field of geothermal reservoir under low-temperature tailwater reinjection conditions, which is crucial for the sustainable geothermal energy management.
Xin Wang   +5 more
doaj   +1 more source

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