Results 51 to 60 of about 968 (208)

Mechanical behavior of granite residual soil during wetting considering effects of initial unloading

Yantu gongcheng xuebao, 2022
The unloading caused by slope excavation may affect soil behavior during the subsequent rainfall-induced wetting. However, the previous wetting tests do not greatly consider this fact.
SHU Rong-jun 1, 2, KONG Ling-wei 1, 2, WANG Jun-tao 1, 2, JIAN Tao 1, 2, ZHOU Zhen-hua 1, 2
doaj   +1 more source

Sinningia pampeana sp. nov. (Gesneriaceae) from the Pampa's rocky outcrops in southern Brazil and Uruguay

Nordic Journal of Botany, EarlyView.
Sinningia pampeana is a new rupicolous species from the rocky outcrops of the Pampa biome in southern Brazil and Uruguay. Morphological analyses based on herbarium material, field observations, and detailed illustrations support its recognition as a distinct species from Sinningia sellovii.
Gabriel Emiliano Ferreira, Daniel Alves Spiazzi, Pedro Henrique Sonsim Barbieri, Alain Chautems, Andréa Onofre Araújo   +4 more
wiley   +1 more source

A proposed method to determine in-situ shear modulus and shear strain decay curves in different structured soil [PDF]

E3S Web of Conferences, 2019
This paper illustrates the application of the self-boring pressuremeter test and the seismic dilatometer test to acquire the in-situ decay curves of stiffness with shear strain level (G-γ decay curves) of three types of structural soil, which are granite
An Ran, Kong Lingwei, Guo Aiguo, Zhang Xianwei   +3 more
doaj   +1 more source

Prediction of Matrix Suction of Unsaturated Granite Residual Soil Slope Based on Electrical Conductivity

Frontiers in Earth Science, 2022
To study the relationship between matrix suction and conductivity in unsaturated granite residual soil and realize the matrix suction prediction of soil slope based on conductivity, laboratory and field tests are carried out on undisturbed soil at ...
Ruimin Chen, Yunzhao Lin, Qingling Liu, Hongqiang Dou, Luis F. Robledo, Wenbin Jian, Wenbin Jian   +6 more
doaj   +1 more source

Influence of structure in the soil-water characteristic curves of two residual soils of granite [PDF]

E3S Web of Conferences, 2016
Cet article traite de l'influence de la structure dans les courbes caractéristiques sol-eau (SWCC) de deux sols résiduels de granit formés dans un environnement subtropical. Un sol a un caractère saprolitique (nommé GrSp) et l'autre présente un comportement latéritique (nommé GrLt).
Marcelo Heidemann, Luiz Antônio Bressani, Wai Ying Yuk Gehling, Juan Altamirano Flores, Mattheus Porto   +4 more
openaire   +2 more sources

Eriope barrinhae (Lamiaceae, Hyptidinae), a new montane species from northern Minas Gerais, Brazil

Nordic Journal of Botany, EarlyView.
In northern Minas Gerais, in the Monte Azul region, the Pico da Formosa mountain remains poorly explored botanically despite recent discoveries of new taxa. During fieldwork at the summit of this mountain, we discovered a distinctive population of Eriope that differs from all known species by a unique combination of morphological characters.
Danilo Alvarenga Zavatin, Luísa Azevedo, Renato Ramos, Jefferson Prado, Arthur de Souza Soares   +4 more
wiley   +1 more source

Effect of rainfall intensity on failure mode of granite residual soil slope under dry-wet cycle

Shuiwen dizhi gongcheng dizhi
Granite residual soil is widely distributed in the southeast of China, where slopes composed of this material are prone to instability and failure under alternating rainfall and drying conditions.
Qiang MAO, Guangning XIAO, Kai GUO, Jiangwei ZHANG, Xiaohui CHENG, Hongxian GUO   +5 more
doaj   +1 more source

Internal Permafrost Structure of Geomorphologically Distinct Palsas in Northern Sweden Revealed by Quasi‐3D ERT

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Permafrost in northern peatlands occurs within individual palsas or extensive peat plateaus and controls local carbon storage. These permafrost landforms are complex, and their internal structure remains poorly understood. We used quasi‐3D electrical resistivity tomography (ERT) measurements, supported by UAV‐LiDAR topography, frost probing ...
Cas Renette, Mirko Pavoni, Mauricio Fuentes, Erik Sturkell, Mats Olvmo, Heather Reese   +5 more
wiley   +1 more source

Structural characteristics and dynamic mechanical properties of granite residual soil based on dynamic triaxial tests

Yantu gongcheng xuebao
The granite residual soil is a typical soil widely distributed in the coastal areas of South China and other rainy regions. Due to its unique geological formation, it exhibits both high strength and large porosity, making it widely used in underground ...
HE Bin 1 , ZHOU Xiaowen 2, 3, LI Zejian 2
doaj   +1 more source

Engineering properties of the Bukit Timah Granitic residual soil in Singapore

Underground Space, 2019
Extensive site investigations were conducted prior to the construction of a Mass Rapid Transit project in Singapore that was predominantly in the Bukit Timah Granite (BTG) formation residual soil.
W.G. Zhang, R.H. Zhang, L. Han, A.T.C. Goh   +3 more
doaj   +1 more source