Application of laser surface nanotexturing for the reduction of peri-implantitis on biomedical grade 5 Ti-6Al-4V dental abutments

2019 ◽  
Author(s):  
Eckart Uhlmann ◽  
Luiz Schweitzer ◽  
Alexandre Cunha ◽  
Julian Polte ◽  
Katrin Huth-Herms ◽  
...  
Keyword(s):  
Laser Surface ◽  
Grade 5 ◽  
Dental Abutments

Microstructures of Laser Processed Fe-Cr Surface Alloys

1981 ◽  
Vol 39 ◽  
pp. 328-329
Author(s):  
P. A. Molian ◽  
K. H. Khan ◽  
W. E. Wood
Keyword(s):  
Cooling Rate ◽  
Pure Iron ◽  
Continuous Wave ◽  
Laser Surface ◽  
Material Surface ◽  
Constitution Diagram ◽  
Incident Power ◽  
Surface Alloying ◽  
Laser Surface Alloying ◽  
Spot Diameter

In recent years, the effects of chromium on the transformation characteristics of pure iron and the structures produced thereby have been extensively studied as a function of cooling rate. In this paper, we present TEM observations made on specimens of Fe-10% Cr and Fe-20% Cr alloys produced through laser surface alloying process with an estimated cooling rate of 8.8 x 104°C/sec. These two chromium levels were selected in order to study their phase transformation characteristics which are dissimilar in the two cases as predicted by the constitution diagram. Pure iron (C<0.01%, Si<0.01%, Mn<0.01%, S=0.003%, P=0.008%) was electrodeposited with chromium to the thicknesses of 40 and 70μm and then vacuum degassed at 400°F to remove the hydrogen formed during electroplating. Laser surface alloying of chromium into the iron substrate was then performed employing a continuous wave CO2 laser operated at an incident power of 1200 watts. The laser beam, defocussed to a spot diameter of 0.25mm, scanned the material surface at a rate of 30mm/sec, (70 ipm).

Eye Movements of Children and Adults While Reading Television Subtitles

2007 ◽  
Vol 12 (3) ◽  
pp. 196-205 ◽  
Author(s):  
Géry d'Ydewalle ◽  
Wim De Bruycker
Keyword(s):  
Eye Movements ◽  
Foreign Language ◽  
Age Differences ◽  
Information Sources ◽  
Native Language ◽  
Verbal Information ◽  
Single Text ◽  
Grade 5 ◽  
Reading Patterns ◽  
Attentional System

Abstract. Eye movements of children (Grade 5-6) and adults were monitored while they were watching a foreign language movie with either standard (foreign language soundtrack and native language subtitling) or reversed (foreign language subtitles and native language soundtrack) subtitling. With standard subtitling, reading behavior in the subtitle was observed, but there was a difference between one- and two-line subtitles. As two lines of text contain verbal information that cannot easily be inferred from the pictures on the screen, more regular reading occurred; a single text line is often redundant to the information in the picture, and accordingly less reading of one-line text was apparent. Reversed subtitling showed even more irregular reading patterns (e.g., more subtitles skipped, fewer fixations, longer latencies). No substantial age differences emerged, except that children took longer to shift attention to the subtitle at its onset, and showed longer fixations and shorter saccades in the text. On the whole, the results demonstrated the flexibility of the attentional system and its tuning to the several information sources available (image, soundtrack, and subtitles).

Phonological activation of word meanings in grade 5 readers.

2016 ◽  
Vol 42 (4) ◽  
pp. 524-541 ◽  
Author(s):  
Debra Jared ◽  
Jane Ashby ◽  
Stephen J. Agauas ◽  
Betty Ann Levy
Keyword(s):  
Word Meanings ◽  
Grade 5 ◽  
Phonological Activation

RESONANT MULTIPHOTON PROCESSES IN LASER-SURFACE INTERACTION

1987 ◽  
Vol 48 (C7) ◽  
pp. C7-443-C7-446
Author(s):  
J. REIF ◽  
H. B. NIELSEN ◽  
O. SEMMLER ◽  
P. TEPPER ◽  
E. MATTHIAS ◽  
...  
Keyword(s):  
Surface Interaction ◽  
Laser Surface ◽  
Multiphoton Processes

MENINGKATKAN KEMAMPUAN KOMUNIKASI MELALUI PEMBELAJARAN KOOPERATIF TIPE TARI BAMBU

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Idham Kholid ◽  
Dede Rohaniawati
Keyword(s):  
Cooperative Learning ◽  
Primary School ◽  
Communication Skill ◽  
Learning Model ◽  
Skill Assessment ◽  
Fifth Grade Students ◽  
Grade 5 ◽  
Teachers And Students ◽  
And Performance ◽  
Research Students

This research was conducted with the aim to know the application of cooperative learning model of bamboo dance type in learning social studies in every cycle and to know the improvement of student communication skill in every cycle. The method used in this research is classroom action research. Students who made the object of this study is the fifth-grade students of Islamic primary school AlMuawwanah in Subang District West Java Indonesia, which amounted to 30 consisted of 21 men and 9 women. The data collection techniques using teacher and student observation sheets and performance assessment sheets. The results of this study showed that the application of cooperative learning model of bamboo dance type can improve students' communication skills. The result of precycle student communication skill assessment is 42,83%. In the first cycle increased by 56.83% and more increased in cycle II reached 66.67%. The highest achievement occurred in the third cycle of 86.17%. This study shows that communication skill of grade 5 students of Islamic primary school in Al-Muawwanah has increased during the implementation of cooperative learning model of bamboo dance type in each cycle. The activities of teachers and students in the learning process also increased in every cyle.

Tool steel laser surface modification with TiC

2008 ◽  
Author(s):  
M. A. Montealegre ◽  
G. Castro ◽  
J. L. Arias ◽  
A. Fernández-Vicente ◽  
J. Vázquez
Keyword(s):  
Surface Modification ◽  
Tool Steel ◽  
Laser Surface ◽  
Laser Surface Modification
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