scholarly journals The potency of mulch and paclobutrazol treatments to increase potato (Solanum tuberosum L.) tuber production in a high-temperature area

2021 ◽  
Vol 724 (1) ◽  
pp. 012079
Author(s):  
M D Pertiwi ◽  
E Sulistyaningsih ◽  
R H Murti ◽  
B H Purwanto
Keyword(s):  
Solanum Tuberosum ◽  
High Temperature ◽  
Solanum Tuberosum L ◽  
Tuber Production ◽  
High Temperature Area ◽  
Temperature Area

Numerical Simulation of Interior Flow in Evaporation Droplet

2014 ◽  
Author(s):  
Qingming Dong ◽  
Zhentao Wang ◽  
Yonghui Zhang ◽  
Junfeng Wang
Keyword(s):  
Numerical Simulation ◽  
High Temperature ◽  
Internal Flow ◽  
Surface Force ◽  
Droplet Surface ◽  
Force Model ◽  
Marangoni Flow ◽  
High Temperature Area ◽  
Interior Flow ◽  
Temperature Area

In this present study, the VOF (Volume of Fluid) approach is adopted to capture the interface, and CSF (Continuum Surface Force) model to calculate the surface tension, and the governing equations are founded in numerical simulation of evaporating droplets. In this work, a water droplet is assumed to be suspending in high temperature air, and the gravity of a droplet is ignored. During evaporating process of the droplet, the internal circulation flow will be induced due to the gradient of temperature at the droplet surface. The interface flows from high temperature area to low temperature area, which pulls the liquid to produce convective flow inside the droplet called as Marangoni flow. Marangoni flow makes the temperature distribution tend to uniformity, which enhances heat transfer but weakens Marangoni flow in turn. So, during droplet evaporation, the internal flow is not steady.

Study of phase transformation temperatures of alloys based on Fe–C–Cr in high-temperature area

2018 ◽  
Vol 133 (1) ◽  
pp. 41-48 ◽  
Author(s):  
Ľubomíra Drozdová ◽  
Bedřich Smetana ◽  
Simona Zlá ◽  
Vlastimil Novák ◽  
Monika Kawuloková ◽  
...  
Keyword(s):  
Phase Transformation ◽  
High Temperature ◽  
Transformation Temperatures ◽  
High Temperature Area ◽  
Temperature Area

Contour Extraction for Images of High Temperature Long Shaft Heavy Forgings

2012 ◽  
Vol 562-564 ◽  
pp. 1655-1659
Author(s):  
Qin Xiang Xia ◽  
Zhe Lin Li ◽  
Wei Qi Zong ◽  
He Qing Xie
Keyword(s):  
High Temperature ◽  
Hot Forging ◽  
Ccd Camera ◽  
Measuring Method ◽  
Contour Extraction ◽  
B Spline ◽  
High Temperature Area ◽  
The Mean ◽  
Temperature Area

Non-contact measuring method based on CCD camera is desirable for product quality of high temperature long-shaft heavy forgings. In the light of the characteristics of RGB primary color and halation in forging image, the mean red gray value in the high temperature area is proposed as the dynamic threshold to acquire external contours. Internal edges in the image of the hot forging are blurry and discontinuous. For these characteristics, a method based on quadratic B-spline curve is employed to extract and fit the internal contours. Experiments show that this method can effectively remove pseudo features and extract accurate internal and external contours for images of high temperature squaring and chamfering forgings of 900 0C to 1050 0C.

Compared Analysis of Embankment Thermal Stabilities in High Temperature Permafrost Regions with and without Climatic Warming

2012 ◽  
Vol 204-208 ◽  
pp. 1822-1829
Author(s):  
Dong Qing Li ◽  
Xing Huang ◽  
Jian Hong Fang
Keyword(s):  
Climate Change ◽  
High Temperature ◽  
Climate Warming ◽  
Eastern Tibetan Plateau ◽  
Cement Concrete ◽  
Thermal Stabilities ◽  
Stable Conditions ◽  
High Temperature Area ◽  
Permafrost Regions ◽  
Temperature Area

The heat stabilities of embankment on the high temperature permafrost regions in the eastern Tibetan Plateau without climate warming and with air temperature rising speed of 0.04°C/a were modeled, and the heights of embankment were discussed and figured out, comparatively and respectively for asphalt-paved, concrete and gravel road surface, according to the natural geographic and geologic conditions in the high temperature permafrost regions in the district. The different confined conditions about embankment critical heights with climate warming and without climate warming were discussed in the paper. Finally, the result had been obtained by numerical calculation: in the high temperature area, for the two types of laying of cement concrete and gravel surface road, the two critical heights of the thermal stable conditions were (road operation for 30 years), respectively, do not consider climate change as 2.5 m and 2.0 m, consideration of climate change were 3.5 m and 3.0 m.

Effective molecular weights of the components in solution for the system anorthite-åermanite

1971 ◽  
Vol 38 (295) ◽  
pp. 353-357
Author(s):  
E. Christiaan de Wys ◽  
Cawas Kapadia
Keyword(s):  
Molecular Weight ◽  
High Temperature ◽  
Silicate Melts ◽  
Apparent Difference ◽  
Primary Field ◽  
Melt Structure ◽  
Molecular Weights ◽  
Weight Value ◽  
High Temperature Area ◽  
Temperature Area

SummaryFrom thermodynamic considerations of the system anorthite-åkermanite it appears that the effective molecular weights of the ‘molecules’ in the melts of this system are 0·5 the molecular weights of anorthite as well as that of åkermanite.The effective molecular weight value of 0·5 anorthite is in significant contrast to that of 1 anorthite obtained by Adams and Cohen (1966) from a similar analysis of the system anorthite-diopside (Bowen, 1915, and Osborn, 1942). The analysis by Adam and Cohen would lead to a non-ionic silicate melt structure in the system anorthite-diopside in contrast to the accepted electrolytic view of silicate melts. It is suspected that the reason for this apparent difference lies in the published liquidus morphology of the anorthite primary fields of the system anorthite-diopside. This same liquidus morphology is also responsible for the distortions in the isofracts and isotherms in the high-temperature area of the primary field of anorthite of the system anorthite-åkermanite-diopside (de Wys and Foster, 1958).

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