Beat The Heat With Rebates From Carrier Cool Cash Receive rebates of up to 1550 on qualifying system purchases Learn More. The changes in C and N in the upper 10 cm soil layer served as a good sign for identification of water and salt influences on soil microbial activity during freezing/thawing. Davidsons Plumbing, Heating & Air Conditioning, Air Conditioner & Furnace Repair & Service San Bernardino, CA 92408. Nitrogen in soil tended to be more mobile with water during freezing and thawing than organic C, and the groundwater table also served as a water source for consecutive upward transport of dissolved N and C. In addition, Lima and Rêgo 31 have applied the GITT approach to investigate the MHD ow and heat transfer in the entrance region of a channel. Such contribu-tions illustrate the accuracy and robustness of the GITT approach in dealing with natural convection problems.

Salt accumulation in the upper layer during freezing and thawing of soil affected microbial activity by lowering osmotic potential, resulting in lower C/N ratio. differentially heated and isothermal cavity walls. Water and salt showed direct influences on soil C and N dynamics by transporting them to upper layer and changing soil microbial activity. Accumulation of soil organic C and total N during freezing periods was strongly related to water and salt accumulation under temperature and water potential gradients. Changes in soil organic C and total N in multiple layers during various periods, as well as their relationships with soil water, salt, and heat dynamics were analyzed. To investigate carbon (C) and nitrogen (N) dynamics in seasonally frozen soils under saline and shallow groundwater supply conditions, in-situ lysimeter experiments with different groundwater table depths (WTD = 1.8 and 2.2 m) were conducted in Inner Mongolia, China during the wintertime of 2012–2013.

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