Freeze-thawing erosion is mainly distributed in the tundra, which one of main factors affecting soil and conservation affects economic development relevant countries regions. The study area was selected to north Tanggula Mountain south Bayankera Mountain, east Qinghai-Tibet Plateau, as headwaters Yangtze River lancang River. topography climate were particularly prone freeze-thawing erosion, eco...

The third instar larvae of Gepus invisus and Solter liber are comparatively described and illustrated for the first time with a particular emphasis on genus level characters. Larval morphology confirms a close relationship between these genera as they differ only in minor characters.

Žydelis et al. (2009 [this issue]) is a direct critique of 2 recent papers we published on the use of biodiversity offsets in managing fisheries bycatch (Wilcox & Donlan 2007; Donlan & Wilcox 2008). The authors misrepresent the use of biodiversity offsets as we presented them, misunderstand the policy objectives of fisheries (and bycatch) management, present a flawed analysis of the appropriate...

The stabilities of eight strains of respiratory syncytial virus were compared after the strains were freeze-dried in the presence and absence of the stabilizer SPGA, which contains 218 mM sucrose, 7.1 mM dipotassium hydrogen phosphate, 3.76 mM potassium dihydrogen phosphate, 4.9 mM sodium glutamate, and 1% (wt/vol) bovine albumin. Strains freeze-dried in the presence of SPGA showed only small-t...

Natural and artificial materials including rocks and cement-based materials such as concrete and cement mortar are affected both physically and chemically by various natural factors known as weathering factors. The freeze-thaw process, as a weathering factor, considerably affects the properties of rocks and concrete. Therefore, the effect of the freeze-thaw process on the physical and mechanica...

Epilepsy was induced by making freeze lesions bilaterally in the mesencephalic reticular formation of cats. The convulsive activity was an equivalent of the generalized status epilepticus, devaloping 15-20 min after the freeze lesions had been made. The animals died in this state 16-20 h after it had developed. The generalized seizure activity may have spread to rostra1 structures from the lesi...

We investigate the effect of chemical freeze-out on identified particle spectra at 200AGeV Au-Au Collisions at RHIC, by utilizing a full three-dimensional hydrodynamical calculation. The hydrodynamical code SPheRIO we employed is based on the smoothed particle hydrodynamic algorithm. In order to describe the spectra of strange hadrons, the code has been further improved by explicitly incorporat...

The aim of study was to evaluate the effects of insulin-like growth factor I (IGF-I) on canine sperm function during cooled and freeze-thaw storage. Extenders supplemented with different IGF-I concentrations (0, 100 and 200 ng/ml) were added to canine spermatozoa, and the sperm samples were stored at 4°C for 48 hr or freeze-thawed. Sperm motility, morphology, plasma-membrane integrity (PMI) and...

Relationships between abiotic (soil temperature and number of freeze-thaw cycles) or biotic factors (chemical elements, microbial biomass, extracellular enzymes, and decomposer communities in litter) and litter decomposition rates were investigated over two years in subalpine forests close to the Qinghai-Tibet Plateau in China. Litterbags with senescent birch, fir, and spruce leaves were placed...

The Arrhenius activation energy for water permeability, (DeltaE(a,H(2)O)) through stem cortical tissue of red osier dogwood (Cornus sericea L.) was determined after treatments which cause membrane rupture as well as after a lethal slow freeze and subsequent slow rewarming. The latter value was higher than the former, but was indistinguishable from the DeltaE(a,H(2)O) found for healthy tissue. I...