scholarly journals Growth and Yield of Rice in Andosol by Dry Direct Seeding Cultivation using Plowing and Compaction in a Cold Climate Region of Japan

2021 ◽  
Vol 90 (3) ◽  
pp. 343-351
Author(s):  
Yoshiya Shinoto ◽  
Ryuji Otani ◽  
Toshinori Matsunami
Keyword(s):  
Cold Climate ◽  
Direct Seeding ◽  
Growth And Yield ◽  
Climate Region

scholarly journals A Trial of No-tillage Direct Seeding of Rice (Oryza sativa L.) at Early Spring in Cold Climate Region in Japan.

1999 ◽  
Vol 68 (1) ◽  
pp. 146-150 ◽  
Author(s):  
Takashi TASHIRO ◽  
Masahiko SAIGUSA ◽  
Kyoichi SHIBUYA
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Early Spring ◽  
Cold Climate ◽  
Direct Seeding ◽  
No Tillage ◽  
Climate Region

scholarly journals Effects of Direct Seeding of Iron-Oxide-Coated Seeds on Dry-Matter Production and Yield of Paddy Rice in Cold Climate Area

2012 ◽  
Vol 81 (1) ◽  
pp. 33-38
Author(s):  
Masami Furuhata ◽  
Tadashi Chosa ◽  
Akihiro Ohsumi ◽  
Osamu Matsumura
Keyword(s):  
Iron Oxide ◽  
Dry Matter ◽  
Paddy Rice ◽  
Cold Climate ◽  
Direct Seeding ◽  
Dry Matter Production ◽  
Matter Production

Impacts of Cold Climate Environmental Conditions on a Riser System Design and Installation

2015 ◽  
Author(s):  
Adekunle Peter Orimolade ◽  
Ove Tobias Gudmestad
Keyword(s):  
Environmental Conditions ◽  
Oil And Gas ◽  
Barents Sea ◽  
Research Work ◽  
Cold Climate ◽  
Field Development ◽  
Climate Region ◽  
Probability Of Occurrence ◽  
The Barents Sea ◽  
Development Concept

Interests in exploration and production of oil and gas in cold climate areas has increased in recent times. This can be attributed to the continual depletion of reserves in mature fields, and recent discoveries of large quantities of oil and gas in the cold climate region, including the more recent discovery of the Alta Reservoir, in the Barents Sea. However, marine operations in this region are faced with challenges resulting from its arctic conditions. Knowledge of the physical environment is important in designing offshore structures, and in planning, and executing marine operations. Selection of a suitable field development concept may be influenced by the probability of occurrence of rare events, such as drifting icebergs. Furthermore, occurrence of mesoscale phenomenon such as polar low pressures may adversely affect planned marine operations. In addition, uncertainties in weather forecasting will reflect on the available weather window to perform installation and interventions works. This paper presents some of the challenges in designing and planning for marine operations in the cold climate region. A possible field development concept for the open water areas of the Norwegian sector of the Barents Sea is discussed. The current research work considers the need for further assessment of the probability of occurrence of drifting icebergs as of importance when selecting field development concept. The Floating Production Storage and Offloading (FPSO) is proposed, and this should be designed with an internal turret system that can be disconnected and reconnected. Some of the challenges associated with riser systems design when considering a turret system with the capability to disconnect and reconnect are discussed. This paper also propose the use of ensemble forecasts as an alternative to the use of alpha factors to estimate operational weather window when planning for marine operations in the Barents Sea. The unpredictability nature of the environmental conditions, especially in the early winter is considered a challenge to marine operations.

scholarly journals An Approach to Improve Energy and Cost Performance of a Social Housing Archetype in Cold Climate Region

2019 ◽  
Vol 111 ◽  
pp. 03065
Author(s):  
Yiğit Yılmaz ◽  
Burcu Çiğdem Yılmaz
Keyword(s):  
Life Cycle ◽  
Physical Properties ◽  
Social Housing ◽  
Life Cycle Cost ◽  
Energy Performance ◽  
Cold Climate ◽  
Temperate Climate ◽  
Base Case ◽  
Climate Region ◽  
Thermo Physical Properties

The importance of building energy performance has been substantially increasing in the last decades due to the global warming. Therefore, buildings within the existing stock and the new buildings are encouraged to achieve the energy performance restrictions and efficiency levels. In this context, a social housing archetype (Harct), which is constructed in each climate region of Turkey with a common design approach for temperate climate region, is evaluated as a base case to improve the energy performance for the cold climate region by the optimization of the life cycle cost (LCC). It is, namely, aimed to not only improve the energy performance of the archetype but also to ensure optimal cost efficiency as significant criterion. It is focused to optimize the façades of the Harct in terms of window width, and optic and thermo-physical properties of the façade with determining the efficient insulation thickness level for exterior walls and efficient glazing types for windows. Firstly, façade design is analysed to find out the minimum and maximum windows’ widths to achieve the optimal window sizes. Secondly, optic and thermo-physical properties and cost data of the opaque and transparent façade elements have been designated among the market products in accordance with the current regulations. Energy model of the building has been run by Energy Plus simulation tool, in order to integrate it with GenOpt for optimization. Optimization was performed to carry out efficient frontier cases. The results were evaluated from life cycle cost (LCC) and energy efficiency point of view to highlight the cost optimal point

Growth and Yield Influenced by Seeding date in Rice Wet Hill Direct Seeding in Honam Double Cropping Area

2014 ◽  
Vol 26 (3) ◽  
pp. 251-257
Author(s):  
Shin-Gu Kang ◽  
◽  
Min-Kyu Choi ◽  
Bon-Il Ku ◽  
Wan-Gyu Sang ◽  
...  
Keyword(s):  
Direct Seeding ◽  
Growth And Yield ◽  
Double Cropping ◽  
Seeding Date

scholarly journals Sensitive Analysis for the Efficiency of a Parabolic Trough Solar Collector Based on Orthogonal Experiment

2015 ◽  
Vol 2015 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaoyan Liu ◽  
Jing Huang ◽  
Qianjun Mao
Keyword(s):  
Thermal Efficiency ◽  
Solar Collector ◽  
Orthogonal Experiment ◽  
Cold Climate ◽  
Inlet Temperature ◽  
Outlet Temperature ◽  
Parabolic Trough ◽  
Pipe Length ◽  
Climate Region ◽  
Parabolic Trough Solar Collector

A multitude of the researches focus on the factors of the thermal efficiency of a parabolic trough solar collector, that is, the optical-thermal efficiency. However, it is limited to a single or double factors for available system. The aim of this paper is to investigate the multifactors effect on the system’s efficiency in cold climate region. Taking climatic performance into account, an average outlet temperature of LS-2 collector has been simulated successfully by coupling SolTrace software with CFD software. Effects of different factors on instantaneous efficiency have been determined by orthogonal experiment and single factor experiment. After that, the influence degree of different factors on the collector instantaneous efficiency is obtained clearly. The results show that the order of effect extent for average maximal deviation of each factor is inlet temperature, solar radiation intensity, diameter, flow rate, condensation area, pipe length, and ambient temperature. The encouraging results will provide a reference for the exploitation and utilization of parabolic trough solar collector in cold climate region.

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