搜索结果: 1-15 共查到“理学 Freezing”相关记录35条 . 查询时间(0.06 秒)
Comparative studies on tolerance of Medicago truncatula and Medicago falcata to freezing
Cold acclimation CRT binding factor (CBF) Medicago truncatula Medicago falcata Freezing tolerance Soluble sugars
2015/2/5
Medicago falcata is a legume species that exhibits great capacity of tolerance to abiotic stresses. To elucidate the mechanism underlying tolerance of M. Falcata to freezing, we compared the character...
Antifreeze proteins in Antarctic fish prevent both freezing and melting
Antifreeze proteins freezing melting
2014/10/9
Antarctic fish that manufacture their own "antifreeze" proteins to survive in the icy Southern Ocean also suffer an unfortunate side effect, researchers funded by the National Science Foundation (NSF)...
Random Symmetry Breaking and Freezing in Chaotic Networks
Random Symmetry Breaking Freezing Chaotic Networks
2012/4/26
Parameter space of a driven damped oscillator in a double well potential presents either a chaotic trajectory with sign oscillating amplitude or a non-chaotic trajectory with a fixed sign amplitude. A...
Enhanced runout and erosion by overland flow at low pressure and sub-freezing conditions: Experiments and application to Mars
Mars, Surface Geological processes Experimental techniques
2014/4/8
We present the results of laboratory experiments to study the sediment transport and erosional capacity of water at current martian temperature and pressure. We have performed laboratory simulation ex...
Magnetic order, metamagnetic transitions, and low-temperature spin freezing in Ca2Co2O6: an NMR study
Magnetic order metamagnetic transitions low-temperature spin
2010/11/18
We report on a 59Co NMR investigation of the trigonal cobaltate Ca3Co2O6 carried out on a single crystal, providing precise determinations of the electric field gradient and chemical shift tensors, an...
Zero-Temperature Freezing in Three-Dimensional Kinetic Ising Model
Zero-Temperature Freezing Three-Dimensional Kinetic Ising Model
2010/11/22
We investigate the long-time properties of the Ising-Glauber model on a periodic cubic lattice
after a quench to zero temperature. In contrast to the conventional picture from phase-ordering
kinetic...
Volume nucleation rates for homogeneous freezing in supercooled water microdroplets: results from a combined experimental and modelling approach
Volume nucleation rates supercooled water microdroplets a combined experimental and modelling approach
2010/9/1
Temperature-dependent volume nucleation rate coefficients for supercooled water droplets, JV(T), are derived from infrared extinction measurements in a cryogenic laminar aerosol flow tube using a micr...
Introducing the bromide/alkalinity ratio for a follow-up discussion on "Precipitation of salts in freezing seawater and ozone depletion events: a status report", by Morin et al., published in Atmos. Chem. Phys., 8, 7317–7324, 2008
the bromide/alkalinity ratio freezing seawater ozone depletion events salts
2010/8/25
Sander et al. (2006) proposed that CaCO3 precipitation can be an important factor in triggering tropospheric ozone depletion events. Recently, Morin et al. (2008b) presented calculations with the FREZ...
Heterogeneous freezing of droplets with immersed mineral dust particles – measurements and parameterization
droplets immersed mineral dust particles measurements parameterization
2010/8/12
During the measurement campaign FROST (FReezing Of duST), LACIS (Leipzig Aerosol Cloud Interaction Simulator) was used to investigate the immersion freezing behavior of size selected, coated and uncoa...
Snowpack Liquid Water Determinations Using Freezing Calorimetry
Snowpack Liquid Water Determinations Freezing Calorimetry
2009/10/28
Liquid water in a snowpack has been recognized for some time as a quantifiable
variable of hydrologic significance. It is also important in the interpretation
of snowpack microwave remote sensing da...
Numerical Modelling of Phase Change in Freezing and Thawing Unsaturated Soil
Numerical Modelling Phase Change Unsaturated Soil
2009/10/26
This paper presents a new method for handling the phase change process in
numerical simultations of freezing and thawing soils. Moisture and heat transfer
in soils subjected to both freezing and tha...
Frost Heave due to Ice Lens Formation in Freezing Soils 2.Field Application
Frost Heave Ice Lens Formation Freezing Soils Field Application
2009/10/26
An operational model for estimation of frost heave in field where stratified soil
profile appears is presented. The model is developed from the research model
described in part B. Soil layers are fi...
Frost Heave due to Ice Lens Formation in Freezing Soils 1.Theory and Verification
Frost Heave Ice Lens Formation Freezing Soils Theory and Verification
2009/10/26
A frost heave model which simulates formation of ice lenses is developed for
saturated salt-free soils. Quasi-steady state heat and mass flow is considered.
Special attention is paid to the transmit...
Parameterizing the competition between homogeneous and heterogeneous freezing in ice cloud formation – polydisperse ice nuclei
heterogeneous freezing ice cloud formation polydisperse ice nuclei
2009/8/25
This study presents a comprehensive ice cloud formation parameterization that computes the ice crystal number, size distribution, and maximum supersaturation from precursor aerosol and ice nuclei. The...
Freezing of water droplets colliding with kaolinite particles
water droplets colliding kaolinite particles
2009/7/15
Contact freezing of single supercooled water droplets colliding with kaolinite dust particles has been investigated. The experiments were performed with droplets levitated in an electrodynamic balance...