نتایج جستجو برای: double sand lenses

تعداد نتایج: 282103  

Journal: :Iraqi geological journal 2023

One of the challenges 3D geological modelling is spatial representation heterogeneous sedimentary rocks. The R’Mel coastal basin located in northwestern Morocco a very suitable area for rock formations. This part external Pre-Rif and composed rocks Miocene to Quaternary age (principally sand, marl, sandstone, silt, alluvia). Due impact climate change, any increase abstraction groundwater can ac...

Journal: :Water 2023

Lateral subsurface flow (LSF) is a phenomenon that widely occurring including the hummocky ground moraine landscape. Due to heterogeneous structure of subsurface, transport times pesticides and nutrients from agricultural areas adjacent water bodies are difficult assess. Here, LSF at Luvisol Regosol plots an experimental field were studied by applying potassium bromide along 10 m trench below p...

Journal: :Frontiers in Earth Science 2023

Introduction: Most of the sand fixation technologies utilized locally and internationally are static or dynamic, making it challenging for a single mode to function in harsh environment. Therefore, development that combines resistance consolidation has emerged as trending topic control research. Our team developed wing bag barrier, which is dynamic combination mode. Methods: In this study, we e...

2013
Aniruddha Ghosh

Unlike green sand, chemically bonded sand cannot be used again and again without reclamation because in this system, the mixed sand gets it`s strength through chemical reaction which is irreversible in nature. Each sand particle is coated with this reacted chemical, which behaves like an inert element after usage once. This inert coating also called “Dead” binder needs to be removed from the us...

2015
Michael Johnson Robert D. Rosebrugh

As part of an ongoing project to unify the treatment of symmetric lenses (of various kinds) as equivalence classes of spans of asymmetric lenses (of corresponding kinds) we relate the symmetric delta lenses of Diskin et al, with spans of asymmetric delta lenses. Because delta lenses are based on state spaces which are categories rather than sets there is further structure that needs to be accou...

Journal: :Ground water 2016
David L Hochstetler Warren Barrash Carsten Leven Michael Cardiff Francesco Chidichimo Peter K Kitanidis

Hydraulic tomography is an emerging field and modeling method that provides a continuous hydraulic conductivity (K) distribution for an investigated region. Characterization approaches that rely on interpolation between one-dimensional (1D) profiles have limited ability to accurately identify high-K channels, juxtapositions of lenses with high K contrast, and breaches in layers or channels betw...

2014
Sai-Keung Wong Ting-Yu Chen

We present an interactive sand art drawing system using one RGB-D sensor, such as Kinect. Our system supports the common sand drawing functions, such as sand erosion, sand spilling, and sand leaking. To use hands to draw virtual sand on a drawing plane, we design four key gestures which enable drawing manipulation actions for sand. The basic idea is that the gesture of one hand controls the dra...

Journal: :Optics express 2012
Changbao Ma Zhaowei Liu

Optical lenses are pervasive in various areas of sciences and technologies. It is well known that conventional lenses have symmetrical imaging properties along forward and backward directions. In this letter, we show that hyperbolic plasmonic metamaterial based negative refraction lenses perform as either converging lenses or diverging lenses depending on the illumination directions. New imagin...

Journal: :Investigative ophthalmology & visual science 2003
Steven A Koopmans Thom Terwee Jan Barkhof Henk J Haitjema Aart C Kooijman

PURPOSE Because presbyopia is thought to be accompanied by increased lens sclerosis this study was conducted to investigate whether refilling the capsule of the presbyopic human lens with a soft polymer would restore the ability of the lens to undergo accommodative changes. METHODS Accommodative forces were applied to natural and refilled lenses by circumferential stretching through the cilia...

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