Parables of Sun Light

1990 ◽  
Author(s):  
Rudolf Arnheim
Keyword(s):  
Sun Light

Examination for Degradation Paths of Butyltin Compounds in Natural Waters

1992 ◽  
Vol 25 (11) ◽  
pp. 117-124 ◽  
Author(s):  
N. Watanabe ◽  
S. Sakai ◽  
H. Takatsuki
Keyword(s):  
Glass Fiber ◽  
Half Life ◽  
Natural Waters ◽  
Sea Water ◽  
Degradation Process ◽  
Distilled Water ◽  
Degradation Rates ◽  
Clean Area ◽  
Butyltin Compounds ◽  
Sun Light

Examination of individual degradation paths (biodegradation and photolysis) of butyltin compounds (especially tributyltin: TBT) in natural waters was performed. Biodegradation of TBT and dibutyltin (DBT) in an unfiltered sea water in summer is rather fast; their half life is about a week. But pretreatment with glass fiber filter makes the half life of TBT much longer (about 80 days). Photolysis of TBT in sea water by sun light is rapid (half life is about 0.5 days), and faster than in distilled water or in fresh water. Degradation rates of each process for TBT are calculated in various conditions of sea water, and contribution rates are compared. Biodegradation will be the main degradation process in an “SS-rich” area such as a marina, but photolysis will exceed that in a “clean” area. Over all half lives of TBT in sea water vary from 6 days to 127 days considering seasons and presence of SS.

Enhanced Simulated Sun Light Photocatalytic Activity of α-Fe2O3 Modified g-C3N4 prepared In-situ

2016 ◽  
Vol 19 (1) ◽  
Author(s):  
Xinlu Liu ◽  
Junbo Zhong ◽  
Jianzhang Li ◽  
Wei Hu ◽  
Qizhao Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Sun Light

AbstractIn this paper, α-Fe

EFFECT OF TAPPING DIRECTION IN RELATION TO SUN LIGHT ON GUM ARABICACACIA SENEGAL(L.) WILLD. YIELDS IN NORTH KORDOFAN STATE, SUDAN

2009 ◽  
Vol 19 (2) ◽  
pp. 185-191 ◽  
Author(s):  
IDRIS MUSA ADAM ◽  
MOHAMED EL MUKHTAR BALLAL ◽  
KAMAL E.M. FADL
Keyword(s):  
Sun Light

Materials and structures engineering of sun-light absorbers for efficient direct solar steam generation

Solar Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 747-772
Author(s):  
Sogol Karami ◽  
Farzaneh Arabpour Roghabadi ◽  
Mahmoud Maleki ◽  
Vahid Ahmadi ◽  
Seyed Mojtaba Sadrameli
Keyword(s):  
Steam Generation ◽  
Light Absorbers ◽  
Solar Steam Generation ◽  
Sun Light

Photocatalytic Degradation of Tartrazine Dyes Using TiO2–Chitosan Beads under Sun Light Irradiation

2021 ◽  
Vol 95 (5) ◽  
pp. 1069-1076
Author(s):  
L. Aoudjit ◽  
D. Zioui ◽  
F. Touahra ◽  
S. Mahidine ◽  
K. Bachari
Keyword(s):  
Photocatalytic Degradation ◽  
Light Irradiation ◽  
Chitosan Beads ◽  
Sun Light

scholarly journals Performance Of Bilati Dhonia (Eryngium Foetidum L.) Under The Canopy Of Different Tree Species

1970 ◽  
Vol 36 (2) ◽  
pp. 255-262
Author(s):  
M Moniruzzaman ◽  
AKM Qamruzzaman
Keyword(s):  
Tree Species ◽  
Agricultural Research ◽  
Leaf Length ◽  
Research Station ◽  
Direct Sunlight ◽  
Hill District ◽  
Eryngium Foetidum ◽  
Number Of Leaves ◽  
Sun Light ◽  
Growth Characters

Performance of ‘Bilati Dhonia’ (Eryngium foetidum L.) grown under the shades of different tree species, namely guava, jackfruit, mango, jujube, and farmers’ practice (grown under artificial shade) was evaluated at the Agricultural Research Station, Raikhali, Rangainati Hill District during two consecutive years of 2004-05 and 2005-06. The results revealed that plant height, leaf length, number of leaves per plant and fresh weight per plant were significantly higher under the canopies of various trees and farmers’ practice than those grown under direct sun light. Different growth characters were better under the shades of jackfruit and guava trees than those of other species. Periods to first and 50% flowering under tree species were longer than that under direct sunlight. The highest fresh yield (mean of two years) of ‘Bilati Dhonia’ was found in the farmers’ practice (27.58 t/ha), which was similar to those under guava (27.31 t/ha) and jackfruit trees (27.51 t/ha). Keywords: Bilati Dhonia (Eryngium foetidum L.); tree shades; hilly area. DOI: http://dx.doi.org/10.3329/bjar.v36i2.9252 BJAR 2011; 36(2): 255-262

scholarly journals Design of an IoT based Real Time Environment Monitoring System using Legacy Sensors

2018 ◽  
Vol 210 ◽  
pp. 03008
Author(s):  
Aparajita Das ◽  
Manash Pratim Sarma ◽  
Kandarpa Kumar Sarma ◽  
Nikos Mastorakis
Keyword(s):  
Air Pollution ◽  
Light Intensity ◽  
Real Time ◽  
Environmental Conditions ◽  
Low Cost ◽  
Environment Monitoring ◽  
Time Data ◽  
Graphical Information ◽  
Real Time Data ◽  
Sun Light

This paper describes the design of an operative prototype based on Internet of Things (IoT) concepts for real time monitoring of various environmental conditions using certain commonly available and low cost sensors. The various environmental conditions such as temperature, humidity, air pollution, sun light intensity and rain are continuously monitored, processed and controlled by an Arduino Uno microcontroller board with the help of several sensors. Captured data are broadcasted through internet with an ESP8266 Wi-Fi module. The projected system delivers sensors data to an API called ThingSpeak over an HTTP protocol and allows storing of data. The proposed system works well and it shows reliability. The prototype has been used to monitor and analyse real time data using graphical information of the environment.

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