Low cost adaptive underwater acoustic modem for the Black Sea environment

2012 ◽  
Author(s):  
George Zӑrnescu
Keyword(s):  
Black Sea ◽  
Low Cost ◽  
The Black Sea ◽  
Underwater Acoustic ◽  
Acoustic Modem

scholarly journals Design of a low-cost, underwater acoustic modem for short-range sensor networks

2010 ◽  
Author(s):  
B. Benson ◽  
Y. Li ◽  
R. Kastner ◽  
B. Faunce ◽  
K. Domond ◽  
...  
Keyword(s):  
Sensor Networks ◽  
Short Range ◽  
Low Cost ◽  
Underwater Acoustic ◽  
Range Sensor ◽  
Acoustic Modem

scholarly journals Design of a Low-Cost Underwater Acoustic Modem

2010 ◽  
Vol 2 (3) ◽  
pp. 58-61 ◽  
Author(s):  
Bridget Benson ◽  
Ying Li ◽  
Brian Faunce ◽  
Kenneth Domond ◽  
Don Kimball ◽  
...  
Keyword(s):  
Low Cost ◽  
Underwater Acoustic ◽  
Acoustic Modem

Sample application of a low-cost X-band monitoring system of surface currents at the Black Sea shore

2011 ◽  
Vol 12 (2) ◽  
pp. 1-8 ◽  
Author(s):  
D. V. Ivonin ◽  
V. A. Telegin ◽  
V. V. Bakhanov ◽  
A. V. Ermoshkin ◽  
A. I. Azarov
Keyword(s):  
Monitoring System ◽  
Black Sea ◽  
Low Cost ◽  
The Black Sea ◽  
Surface Currents ◽  
X Band ◽  
Sample Application

scholarly journals Cellulose fibers extraction from Ulva lactuca from the Black Sea

2020 ◽  
Vol 31 (2) ◽  
pp. 158-162
Author(s):  
Doiniţa-Roxana Cioroiu Tirpan ◽  
Claudia Irina Koncsag ◽  
Tănase Dobre
Keyword(s):  
Black Sea ◽  
Chemical Treatment ◽  
Low Cost ◽  
Fine Powder ◽  
Insoluble Fraction ◽  
Ulva Lactuca ◽  
The Black Sea ◽  
Cellulose Fibres ◽  
Soxhlet Apparatus ◽  
Medical Materials

Abstract Cellulose fibres are known for their good mechanical properties, therefore they are used as fillers in structural composite materials, including as nanofibrils in nanomaterials. Also, they are biocompatible, non-toxic and biodegradable, reason for their use in the food industry as packaging materials or in obtaining medical materials. One source of cheap, easy- to- extract cellulose is the algal mass of Ulva lactuca, one of the most frequent species found in the Black Sea. In this study, cellulose extraction from Ulva lactuca was achieved by a simple low cost physical-chemical treatment. Freshly harvested seaweed was dried at 45 °C for 48 hours, transformed into a fine powder in order to increase the contact surface between the solvents and the alga. Extraction of lipids and chlorophyll took place in Soxhlet apparatus with ethanol. Successive steps of chemical treatment, having in view removal of hydrosoluble ulvans, pigments and hemicellulose lead to a yield of 15.36% in dry matter (DM) of cellulose-rich insoluble fraction proving that Ulva Lactuca species is a viable alternative resource in cellulose production.

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