Patterning and pattern selection in a surface layer: Feedback between point defects population and surface layer temperature variations

2016 ◽  
Vol 463 ◽  
pp. 152-162 ◽  
Author(s):  
Dmitrii O. Kharchenko ◽  
Vasyl O. Kharchenko ◽  
Anna I. Bashtova ◽  
Irina O. Lysenko
Keyword(s):  
Surface Layer ◽  
Point Defects ◽  
Pattern Selection ◽  
Temperature Variations ◽  
Surface Layer Temperature

Measuring the surface-layer temperature of rolling-mill rolls

1969 ◽  
Vol 12 (11) ◽  
pp. 1575-1576
Author(s):  
A. A. Zgura ◽  
V. F. Frolov ◽  
N. N. Oksamitnyi
Keyword(s):  
Surface Layer ◽  
Rolling Mill ◽  
Surface Layer Temperature

scholarly journals Surface layer temperature inversion in the Bay of Bengal: Main characteristics and related mechanisms

2016 ◽  
Vol 121 (8) ◽  
pp. 5682-5696 ◽  
Author(s):  
Pankajakshan Thadathil ◽  
I. Suresh ◽  
S. Gautham ◽  
S. Prasanna Kumar ◽  
Matthieu Lengaigne ◽  
...  
Keyword(s):  
Surface Layer ◽  
Bay Of Bengal ◽  
Temperature Inversion ◽  
Surface Layer Temperature

scholarly journals Peculiarities of surface layer response to local and global variations of temperature field at water-air boundary

2021 ◽  
Vol 1 (395) ◽  
pp. 155-161
Author(s):  
S. Zenchenko ◽  
Keyword(s):  
Surface Layer ◽  
Temperature Field ◽  
Water Surface ◽  
Thermal Conditions ◽  
Simulation Data ◽  
Temperature Variations ◽  
Low Intensity ◽  
Water Surface Temperature ◽  
Different Temperatures ◽  
Qualitative Changes

Object and purpose of research. This paper discusses surface layer at water-air boundary. The purpose of this work to investigate, in controllable conditions, the dynamics of surface layer properties depending on temperature variations. Materials and methods. Contact multi-channel tools for temperature and humidity control, as well as infrared tools for water surface temperature monitoring. Simulation of different thermal conditions at water-air boundary and low-intensity hydrophysical disturbances on the free surface. Main results. The study yielded simulation data and experimental confirmation of humidity fluctuations in the surface layer at different temperatures at water-air boundary in the conditions of low-intensity disturbances. Conclusion. This study yielded the data on qualitative changes in surface layer humidity based on the calculations as per simultaneously measured temperatures of water in the surface layer and near water-air boundary.

Surface layer temperature inversion in the Arabian Sea during winter

1992 ◽  
Vol 48 (3) ◽  
pp. 293-304 ◽  
Author(s):  
Pakajakshan Thadathil ◽  
Aravind K. Gosh
Keyword(s):  
Surface Layer ◽  
Arabian Sea ◽  
Temperature Inversion ◽  
Surface Layer Temperature

Modeling and Experimental Investigations of the Surface Layer Temperature of Titanium Alloys during AEDG Processing

2015 ◽  
Vol 365 ◽  
pp. 63-70 ◽  
Author(s):  
Andrzej Golabczak ◽  
Marcin Golabczak ◽  
Andrzej Konstantynowicz ◽  
Robert Swiecik ◽  
Marcin Galant
Keyword(s):  
Surface Layer ◽  
Titanium Alloys ◽  
Experimental Investigations ◽  
Energetic Efficiency ◽  
Internal Stresses ◽  
Grinding Wheel ◽  
Manufacturing Processes ◽  
Conventional Grinding ◽  
Titanium Alloy Ti6al4v ◽  
Surface Layer Temperature

Observing the latest manufacturing processes, the following tendencies can be noted: the gain of the energetic efficiency and shortening of the processing time with parallel preservation of the dimensions tolerance, shape tolerance and outer layer quality of the processed workpiece. Also the possibilities of gaining efficiency by rising criteria for process parameters are limited. It is mainly observed in the processing of hard machinable materials like titanium alloys or sintered carbides. Problems related to poor machinability were revealed during the final manufacturing processes using abrasive grinding [1,2]. In this work the results which have been presented are related to the influence by selected electrical parameters of the Abrasive Electrodischarge Grinding (AEDG) on the surface layer temperature of machined samples, in comparison to conventional grinding. Also the change in temperature during the AEDG has been depicted. The basis of this work is similar to the investigations of the deep grinding of surfaces of the titanium alloy Ti6Al4V using CBN and a diamond grinding wheel. For the comparative evaluation of the conventional grinding and AEDG, measurements of the specific grinding energy, energy of the spark discharge and internal stresses in the surface layer have been used.

Surface layer temperature inversion in the Bay of Bengal

2002 ◽  
Vol 49 (10) ◽  
pp. 1801-1818 ◽  
Author(s):  
Pankajakshan Thadathil ◽  
V.V Gopalakrishna ◽  
P.M Muraleedharan ◽  
G.V Reddy ◽  
Nilesh Araligidad ◽  
...  
Keyword(s):  
Surface Layer ◽  
Bay Of Bengal ◽  
Temperature Inversion ◽  
Surface Layer Temperature

scholarly journals Zooplankton diversity and distribution in a deep and anoxic Mediterranean coastal lake

2013 ◽  
Vol 14 (1) ◽  
pp. 179 ◽  
Author(s):  
G. KEHAYIAS ◽  
A. RAMFOS ◽  
S. IOANNOU ◽  
P. BISOUKI ◽  
E. KYRTZOGLOU ◽  
...  
Keyword(s):  
Surface Layer ◽  
Size Fraction ◽  
Oxygen Depletion ◽  
Seasonal Cycles ◽  
Zooplankton Abundance ◽  
Calanoid Copepods ◽  
Coastal Lake ◽  
The Vertical Distribution ◽  
Western Greece ◽  
Surface Layer Temperature

The variation of the smaller size fraction of zooplankton was investigated during a two-year period in a brackish deep and anoxic coastal lake of western Greece (Aitoliko), along with the specific environmental characteristics of this ecosystem. The zooplanktonic community comprised a relatively small number of taxa and it was dominated by brackish-water calanoid copepods (Paracartia latisetosa, Calanipeda aquaedulcis) and in certain periods by rotifers and tintinnids. The zooplankton abundance showed an increase in the warmer period starting from late spring and reached maximum values in July. In the well oxygenated surface layer, temperature was the most important parameter influencing the seasonal cycles of all groups. In contrast, the oxygen depletion a few meters under the surface affected the vertical distribution of most of the zooplankton groups, which were found restricted in the surface layer especially from spring until autumn. Only the meroplanktonic larvae of polychaetes presented increased proportions in the deeper layers. Salinity has not significantly influenced the zooplanktonic assemblages. The results point out the degraded status of the Aitoliko basin where the hypoxic/anoxic layers resulted to a high portion of dead organic material identified as copepod carcasses, and underlines the necessity of monitoring of this ecosystem.

scholarly journals Study of Radiation Embitterment and Degradation Processes of Li2ZrO3 Ceramic under Irradiation with Swift Heavy Ions

Ceramics ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 13-23
Author(s):  
Baurzhan Abyshev ◽  
Artem L. Kozlovskiy ◽  
Kassym Sh Zhumadilov ◽  
Alex V. Trukhanov
Keyword(s):  
Surface Layer ◽  
Radiation Damage ◽  
Point Defects ◽  
Heavy Ions ◽  
Synthesis Method ◽  
Main Process ◽  
Swift Heavy Ions ◽  
Atomic Displacements ◽  
Subsequent Decrease ◽  
Accumulation Of Defects

The work is devoted to the study of radiation damage and subsequent swelling processes of the surface layer of Li2ZrO3 ceramics under irradiation with heavy Xe22+ ions, depending on the accumulation of the radiation dose. The samples under study were obtained using a mechanochemical synthesis method. The samples were irradiated with heavy Xe22+ ions with an energy of 230 MeV at irradiation fluences of 1011–1016 ion/cm2. The choice of ion types is due to the possibility of simulating the radiation damage accumulation processes as a result of the implantation of Xe22+ ions and subsequent atomic displacements. It was found that, at irradiation doses above 5 × 1014 ion/cm2, point defects accumulate, which leads to a disordering of the surface layer and a subsequent decrease in the strength and hardness of ceramics. At the same time, the main process influencing the decrease in resistance to radiation damage is the crystal structure swelling as a result of the accumulation of defects and disordering of the crystal lattice.

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