搜索结果: 16-30 共查到“理学 maintenance”相关记录32条 . 查询时间(0.078 秒)
On the Maintenance of the Subtropical Front and its Associated Countercurrent
Subtropical Front wind-driven circulation thermally driven flow
2009/1/20
In the North Pacific and Atlantic Oceans, the Subtropical Countercurrent is an eastward flow across the Subtropical Gyre at a latitude where a classical wind-driven circulation theory would predict a ...
A Simple Model of the Formation and Maintenance of the Shelf/Slope Front in the Middle Atlantic Bight
Shelf/Slope Front Middle Atlantic Bight
2009/1/12
The strong salinity and temperature gradients across the shelf/slope front in the Middle Atlantic Bight often compensate such that the cross-front density gradient is nearly eliminated. The suggests t...
On the Potential Vorticity Structure of Weakly Ventialted Isopycnals：A Theory of Subtropical Mode Water Maintenance
Potential Vorticity Structure Weakly Ventialted Isopycnals Subtropical Mode Water Maintenance
2009/1/12
A two-layer model of the general circulation including wind and thermal forcing is discussed. The flow in each layer is geostrophic, hydrostatic and obeys linear potential vorticity constraints. The e...
The Formation and Maintenance of Density Fronts on the U.S. Southeastern Continental Shelf during Winter
Density Fronts U.S. Southeastern Continental Shelf Winter
2009/1/12
Density fronts on the U.S. southeastern continental shelf, during winter, am formed by (i) breakdown of the shelf-break front by Gulf Stream meanders or strong southward winds or both, (ii) shoreward ...
Joint optimization of capacity expansion, production and maintenance in stochastic manufacturing systems
Optimal Control Numerical Methods Production Planning
2010/9/10
This paper presents an analytical model for the joint determination of optimal production, corrective maintenance and capacity expansion policies for a repairable production system subject to random f...
Formation and Maintenance of Shelfbreak Fronts in an Unstratified Flow
Shelfbreak Fronts Unstratified Flow passive tracer front
2008/12/24
A depth-averaged model with no density variations was used by Chapman to describe the formation of a passive tracer front at a shelfbreak. The relevance of this frontogenesis mechanism to cases that a...
The Role of Stratification in the Formation and Maintenance of Shelf-Break Fronts
Shelf-Break Fronts continental shelf stratified fluid
2008/12/22
A mechanism is described for the formation or a front at the edge of a continental shelf in an initially linearly stratified fluid lacking horizontal density gradients. A primitive equation numerical ...
Maintenance of polar stratospheric clouds in a moist stratosphere
Maintenance polar stratospheric clouds moist stratosphere
2008/10/29
Previous work has shown that polar stratospheric clouds (PSCs) could have acted to substantially warm high latitude regions during past warm climates such as the Eocene (55 Ma). Using a simple model o...
Eddy Maintenance and Attrition in a Vertically Sheared Current under Arctic Ice
Eddy Maintenance Attrition Vertically Sheared Current Arctic Ice
2008/10/23
Steady drift of an ice cover produces a vertically sheared current in the upper ocean of the Arctic. Under the ice cover, mesoscale shallow brine and freshening sources generate submerged anticyclones...
Formation and Maintenance of a Polynya in the Weddell Sea
Formation Maintenance Polynya Weddell Sea
2008/7/11
A dynamic–thermodynamic sea ice–mixed layer model for the Weddell Sea is complemented by a simple, diagnostic model to account for local sea ice–atmosphere interaction. To consider the atmospheric inf...
Efficient Derivation and Long Term Maintenance of Pluripotent Porcine Embryonic Stem-like Cells
Porcine Embryonic Stem Cells Pluripotent IVF Basic Fibroblast Growth Factor
2016/4/28
Porcine embryonic stem (ES) cells have a great potential as tools for transgenic animal production and studies of regulation of differentiation genes. Although several studies showed successful deriva...
Maintenance of Sperm Characteristics and In vitro Developmental Rate of Embryos against Oxidative Stress through Antioxidants in Pig
Reactive Oxygen Species (ROS) Boar Semen Taurine Embryo Antioxidant Sperm Characteristic
2016/4/27
Oxidative stress is one of the major causes of failure of in vitro storage of boar semen. Reactive oxygen species (ROS) are one of the important mediators of oxidative stress during in vitro storage o...
In this paper, we study the stochastic comparisons of minimal repair replacement policies in repairable case. We give some results on comparisons of the same unit for different policies and on compari...
Convergences and divergences and thin layer formation and maintenance
Convergences divergences thin layer formation maintenance
2014/4/22
The formation and maintenance of thin layers in the presence of turbulent diffusion is considered through the development of a formal framework that evaluates the balance between convergence mechanism...
Evolutionary stoichiometry: The role of food quality for clonal differentiation and hybrid maintenance in a Daphnia species complex
Evolutionary stoichiometry The role of food quality for clonal differentiation hybrid maintenance Daphnia species complex
2014/4/22
Interspecific hybridization is a common phenomenon among Daphnia species (Crustacea: Anomopoda); interspecific hybrids and parental species have been shown to be ecologically differentiated and often ...