Results 41 to 50 of about 1,076 (175)

Influence of Microstructure on Mechanical Properties of Snow

Defence Science Journal, 1995
Snow, being composed of ice grains of varying shapes, sizes, orientations, etc., has been treated as a particulate material. The mechanical properties of snow have been described in terms of microstructural parameters. A set of variables, which characterise the microstructure of snow at the granular level, has been chosen and quantified following ...
K.C. Agrawal, R.K. Mittal
openaire   +1 more source

Estimating Snow Water Equivalent with Backscattering at X and Ku Band Based on Absorption Loss

Remote Sensing, 2016
Snow water equivalent (SWE) is a key parameter in the Earth’s energy budget and water cycle. It has been demonstrated that SWE can be retrieved using active microwave remote sensing from space. This necessitates the development of forward models that are
Yurong Cui, Chuan Xiong, Juha Lemmetyinen, Jiancheng Shi, Lingmei Jiang, Bin Peng, Huixuan Li, Tianjie Zhao, Dabin Ji, Tongxi Hu   +9 more
doaj   +1 more source

Numerical homogenization of the viscoplastic behavior of snow based on X-ray tomography images [PDF]

The Cryosphere, 2017
While the homogenization of snow elastic properties has been widely reported in the literature, homogeneous rate-dependent behavior responsible for the densification of the snowpack has hardly ever been upscaled from snow microstructure.
A. Wautier, A. Wautier, A. Wautier, A. Wautier, A. Wautier, C. Geindreau, F. Flin   +6 more
doaj   +1 more source

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Wear‐Activated Surface Engineering of Thermoplastic Polyurethane/Graphene Nanoplatelet Nanocomposites for Ice Friction Control

Polymer Composites, EarlyView.
Wear‐activated surface engineering of TPU/GNP nanocomposites through improved filler dispersion and interfacial anchoring of functionalized graphene nanoplatelets, leading to finer post‐abrasion textures and enhanced ice traction. ABSTRACT Graphene‐reinforced thermoplastic polyurethane (TPU) composites offer a promising route for developing ...
Sara Zahmatkesh, Siu‐Ning Leung, Reza Rizvi   +2 more
wiley   +1 more source

Biology, ecology, and conservation of the Italian hare Lepus corsicanus: a review

Wildlife Biology, EarlyView.
The Italian hare Lepus corsicanus, an endemic lagomorph of Italy, serves as a critical case study in evolutionary biology and conservation. Once taxonomically debated, modern genetic and morphological analyses confirm its status as a distinct Pleistocene lineage restricted to the central‐southern Italian Peninsula and Sicily.
Pierangelo Freschi, Valter Trocchi
wiley   +1 more source

Environmental and seasonal filtering of taxonomic, functional and phylogenetic diversity patterns of mountain butterflies in a prime butterfly area, Greece

Insect Conservation and Diversity, EarlyView.
Forest clearings support butterfly communities comparable to mountainous grasslands in alpha‐diversity and conservation value, yet remain compositionally distinct. Generalized linear models (GLMs) showed three key habitat predictors shaping multifaceted diversity and community composition: herb/grass height, flowerhead abundance and elevation.
Konstantina Nasiou, Konstantina Zografou, Andreja Radović, Apostolis Stefanidis, Vassiliki Kati   +4 more
wiley   +1 more source

A microstructural approach to model heat transfer in snow [PDF]

Geophysical Research Letters, 2005
The relation between heat flow through snow and microstructure is crucial for the comprehension and modeling of thermophysical, chemical, and mechanical properties of snow. This relationship was investigated using heat flux measurements combined with a microstructural numerical approach.
Kaempfer, T.U., Schneebeli, M., Sokratov, S.A.   +2 more
openaire   +2 more sources

Microstructure-based simulations of the viscous densification of snow and firn

The Cryosphere, 2023
Abstract. Accurate models for the viscous densification of snow and firn under mechanical stress are of primary importance for various applications, including avalanche prediction and the interpretation of ice cores. Formulations of snow and firn compaction in models are still largely empirical, instead of using microstructures from micro-computed ...
K. Fourteau, K. Fourteau, J. Freitag, M. Malinen, H. Löwe   +4 more
openaire   +5 more sources

Effects of Surface Abrasion With Airborne‐Particles and Surface Etching With Hydrofluoric Acid on Color Difference and Translucency of Nano‐Hybrid Ceramic

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate the effects of alumina airborne‐particle abrasion, glass‐bead airborne‐particle abrasion, and hydrofluoric acid etching of intaglio surfaces on the color difference and translucency of a nano‐hybrid ceramic after cementation to resin abutment specimens, and to analyze the relationships between surface roughness and these
Hyuk‐Joon Lee, Jin‐Won Jang, Zee‐Hoon Park, Ji‐Hwan Kim   +3 more
wiley   +1 more source