Results 31 to 40 of about 4,880 (164)

Rhizosphere-Scale Quantification of Hydraulic and Mechanical Properties of Soil Impacted by Root and Seed Exudates

Vadose Zone Journal, 2018
Using rhizosphere-scale physical measurements, we tested the hypothesis that plant exudates gel together soil particles and, on drying, enhance soil water repellency. Barley ( L. cv. Optic) and maize ( L. cv. Freya) root exudates were compared with chia (
M. Naveed, L.K. Brown, A.C. Raffan, T.S. George, A.G. Bengough, T. Roose, I. Sinclair, N. Koebernick, L. Cooper, P.D. Hallett   +9 more
doaj   +1 more source

Discordancy of two common methods of measuring feather hydrophobicity

Journal of Avian Biology
Feather structure contributes greatly to a birds' ability to repel water, which is essential for thermoregulation and energy use. Water repellency of feathers has traditionally been inferred by measuring a structural index based on the distance between ...
Sarah C. Deckel, Chad L. Seewagen
doaj   +1 more source

Persistence of water repellency in coarse-textured soils under various types of forests in NW Spain

Journal of Hydrology and Hydromechanics, 2019
The primary purpose of this work was to assess the persistence of water repellency in the surface horizon of coarse-textured soils under natural Quercus robur ecosystems, and Pinus pinaster and Eucalyptus globulus plantations, in the northwest of the ...
Benito Elena, Varela Eufemia, Rodríguez-Alleres María   +2 more
doaj   +1 more source

Fractal parameters of soil particle size distribution in karst area, and implications of soil water repellency by plantations

Soil and Water Research
As a critical and universal soil physical property, soil water repellency significantly affects soil and water erosion and vegetation restoration, particularly in the karst region.
Zhuo Tian, Haitao Deng, Shuaipu Zhang, Qinxue Xu, Xin Jin   +4 more
doaj   +1 more source

What do we really know about the water repellency of feathers?

Journal of Avian Biology
Feathers are complex integument structures that provide birds with many functions. They are vital to a bird's survival, fundamental to their visual displays, and responsible for the evolutionary radiation of the avian class. Feathers provide a protective
Frank M. S. Muzio, Margaret A. Rubega
doaj   +1 more source

Designing bioinspired superoleophobic surfaces

APL Materials, 2016
Nature provides a range of functional surfaces, for example, water-repellent or superhydrophobic surfaces, most common among them the lotus leaf. While water-repellency is widespread in nature, oil-repellency is typically limited to surfaces submerged in
Philip S. Brown, Bharat Bhushan
doaj   +1 more source

Effect of Biochar Application on Physicochemical and Hydraulic Properties of Loess

Advances in Civil Engineering, 2020
Biochar is important for optimizing soil physical structure and improving soil water retention. The saturated water capacity test, water repellency test, and permeability coefficient test were used to study the effects of biochar additive amount (0, 2, 5,
Xiujuan Yang, Henghui Fan, Yuhang Du, Lu Zhang   +3 more
doaj   +1 more source

Development of a universal microinfiltrometer to estimate extent and persistence of soil water repellency as a function of capillary pressure and interface chemical composition

Journal of Hydrology and Hydromechanics, 2020
Microinfiltrometers to assess soil water repellency (SWR) are limited to small tension ranges and have different technical setups, hindering a comparison between results from different laboratories.
Sepehrnia Nasrollah, Woche Susanne K., Goebel Marc-O., Bachmann Jörg   +3 more
doaj   +1 more source

Use of a highly dispersed chalk additive for the production of concrete for transport structures

MATEC Web of Conferences, 2018
The concretes used for transport infrastructure facilities are exposed to the active impact of corrosive environment; therefore, such concretes face raised demands as for water repellency, frost resistance and corrosion resistance.
Borziak Olga, Chepurna Svitlana, Zidkova Tatyana, Zhyhlo Anna, Ismagilov Andrii   +4 more
doaj   +1 more source

Impacts of grass removal on wetting and actual water repellency in a sandy soil

Journal of Hydrology and Hydromechanics, 2017
Soil water content and actual water repellency were assessed for soil profiles at two sites in a bare and grasscovered plot of a sand pasture, to investigate the impact of the grass removal on both properties.
Oostindie Klaas, Dekker Louis W., Wesseling Jan G., Geissen Violette, Ritsema Coen J.   +4 more
doaj   +1 more source