Results 21 to 30 of about 272,656 (304)

Frost Crack Impact on European Beech (Fagus sylvatica L.) Wood Quality

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2015
Frost crack represents one of the main defects which affect European beech wood quality. Therefore, the purpose of this paper is to improve the knowledge regarding both the impact of frost crack on European beech wood quality and the frost crack ...
Vasile R. CÂMPU, Radu DUMITRACHE
doaj   +1 more source

Stratification mechanisms in slope deposits in high subequatorial mountains [PDF]

open access: yes, 1990
An analysis of the processes active in the frost environment of high subequatorial mountains makes it possible to propose a model for the stratification of slope deposits.
Francou, Bernard
core   +1 more source

Experimental Research on Frost Heave Characteristics of Gravel Soil and Multifactor Regression Prediction

open access: yesAdvances in Materials Science and Engineering, 2018
Gravel soil is usually considered to be insensitive to frost heave. However, many frost heave deformations of foundation in seasonal frozen region indicate that gravel soil may also produce frost heave under certain special conditions. In order to gain a
Xiaoyong Long   +3 more
doaj   +1 more source

Investigation on thermal-hydraulic performance of outdoor heat exchanger in air sources heat pump [PDF]

open access: yes, 2017
A plethora of findings exists on the decreasing heat transfer performance of ASHP under frosting condition. This study investigates, using field and laboratory experiments, the frosting behavior and heat transfer performance of fin-tube exchangers ...
Chen, Y   +4 more
core   +2 more sources

Experimental study on water transfer of soil-rock mixtures under freezing action

open access: yesYantu gongcheng xuebao
The frost-heaving failure of earth-rock dam slopes is mainly caused by the combined action of sand and gravel cushion, frost heaving of dam fills and water migration.
LI Zhuo 1, 2, JIANG Xin 3, ZHANG Jixun 3, ZHAO Yu 3, WANG Yuqing 3, LU Yang 3
doaj   +1 more source

Abundance and Identification of the Leafmining Guild on Apple in the Mid-Atlantic States [PDF]

open access: yes, 2017
The leafmining guild on apple in the northeastern United States was studied from 1983 to 1988. Ten species of leafminers, all Lepidoptera, were encountered during the sampling. Phyllonorycter spp. (P. blancardella and P.
Brown, M. W
core   +2 more sources

Climate change at the ecosystem scale: a 50-year record in New Hampshire [PDF]

open access: yes, 2012
Observing the full range of climate change impacts at the local scale is difficult. Predicted rates of change are often small relative to interannual variability, and few locations have sufficiently comprehensive long-term records of environmental ...
Bailey, Amey S.   +3 more
core   +2 more sources

Review on Spring Frost Disaster for Tea Plant in China

open access: yes应用气象学报, 2021
As a main economic crop in China, tea plant is prone to frost disaster when it germinates in early spring. The research progress and main achievements of tea plant spring frost disaster are systematically summarized.
Wang Peijuan   +4 more
doaj   +1 more source

Numerical Analysis of the Influence of Frost Layers on the Heat Transfer Characteristics of Cryogenic Valves for Polar LNG Ships

open access: yesEnergies
To investigate the impact of frost-layer formation on the heat transfer characteristics of cryogenic valves in LNG vessels, this study derived the temporal variation in the valve’s temperature field based on the thermodynamic characteristic parameters of
Shengpeng Li   +5 more
doaj   +1 more source

On water migration and frost heaving characteristics of sand under water vapor recharge

open access: yesRock and Soil Mechanics, 2022
The influences of different initial water contents, cold end temperatures and dry densities on water migration in sand were studied using the self-developed water migration and frost heaving testing equipment.
LEI Hua-yang   +3 more
doaj   +1 more source

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