Results 71 to 80 of about 125,532 (350)

Estudio y evaluación de los modelos matemáticos para la estimación de la dilatancia

open access: yesRevista Fuentes El Reventón Energético, 2015
The article shows a literature review of the main models that exist for the calculation of dilatancy in the rock, which is a property that has an application in the study of the phenomenon of sanding in oil wells.
Miguel Angel Fuentes Bonilla   +2 more
doaj   +1 more source

Design and construction aspects of a geocomposite drainage system in a dam [PDF]

open access: yes, 2012
The drainage system of a dam depends mainly of the available granular material founded near the dam site and it’s quantities. In some cases, the use of natural granular materials can reach an impracticable cost considering the transportation and the ...
Gerheim Souza Dias, Tiago   +1 more
core   +1 more source

The Maize ZmbHLH118 Transcription Factor Regulates Vacuolar Nitrate Loading by the NO3− Transporter ZmCLCa

open access: yesAdvanced Science, EarlyView.
In maize, the bHLH transcription factor ZmbHLH118 directly binds to the promoter of ZmCLCa and inhibits its expression. Tonoplast‐localized ZmCLCa mediates NO3− influx into the vacuole to regulate intracellular NO3− homeostasis, modulating nitrate uptake and metabolism, plant growth, and grain yield.
Chaonan Zhang   +13 more
wiley   +1 more source

Influence of the Nature of Cement on the Physical and Mechanical Properties of Soil Concretes from Sandy Clay and Laterite

open access: yesCivilEng
Soil concrete is a material produced by mixing the soil at the site with a hydraulic binder. This paper aims to study the influence of the nature of binder on the physical and mechanical properties of soil concrete.
Alain Kamdem   +6 more
doaj   +1 more source

Active earth pressure model tests versus finite element analysis

open access: yesEPJ Web of Conferences, 2017
The purpose of the paper is to compare failure mechanisms observed in small scale model tests on granular sample in active state, and simulated by finite element method (FEM) using Plaxis 2D software. Small scale model tests were performed on rectangular
Pietrzak Magdalena
doaj   +1 more source

Applying GSH to a Wide Range of Experiments in Granular Media [PDF]

open access: yes, 2014
Granular solid hydrodynamics (GSH) is a continuum-mechanical theory for granular media, the range of which is shown in this paper. Simple, frequently analytic solutions are related to classic observations at different shear rates, including: (i)~static ...
Jiang, Yimin, Liu, Mario
core   +1 more source

Recent Advances in Laser‐Induced Graphene‐Based Gas Sensors: From Sensing Mechanisms to Biomedical Applications

open access: yesAdvanced Science, EarlyView.
Laser‐induced graphene (LIG) provides a scalable, laser‐direct‐written route to porous graphene architecture with tunable chemistry and defect density. Through heterojunction engineering, catalytic functionalization, and intrinsic self‐heating, LIG achieves highly sensitive and selective detection of NOX, NH3, H2, and humidity, supporting next ...
Md Abu Sayeed Biswas   +6 more
wiley   +1 more source

Physical Properties of Gypseous Soil after Gypsum Removal using EDTA Solution

open access: yesTikrit Journal of Engineering Sciences, 2018
The main structural problem in construction on gypseous soils is due to the melting of the gypsum when exposed to water. This may be creating voids in the soil leading to rearrangement of the soil structure and moving the soil particles to more stable ...
Farouk Majeed Muhauwiss
doaj   +3 more sources

DEM simulation of soil-tool interaction under extraterrestrial environmental effects [PDF]

open access: yes, 2017
In contrast to terrestrial environment, the harsh lunar environment conditions include lower gravity acceleration, ultra-high vacuum and high (low) temperature in the daytime (night-time).
Arroyo Alvarez de Toledo, Marcos   +3 more
core   +2 more sources

Smart Energy–Harvesting Coating for Moisture–Droplets Based on Ionic Diodes and Transistor–Like Structures

open access: yesAdvanced Science, EarlyView.
A smart power‐generating coating is developed to harvest energy from both ambient humidity and impacting liquid droplets. The integrated system delivers sustained open‐circuit voltages of 0.85 V from moisture and up to 36 V from droplets. Its scalable coating architecture enables a continuous power supply for low‐power electronic devices.
Liang Ma   +5 more
wiley   +1 more source

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