biological parameter
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2020 ◽  
pp. 147715352095845
Author(s):  
Trinh Quang Vinh ◽  
Tran Nam Trung ◽  
Jens Balasus ◽  
Sulabha Sharma ◽  
Tim Hegemann ◽  
...  

To meet the increasing demand for mass-produced microalgae, production processes must be optimised and monitored. The herein described optical sensors provide an instantaneous and direct opportunity to monitor biological and biochemical information for microalgae cultivation. Combination of expertise in natural science and engineering, as well as the application of novel data acquisition and analysis methods, are required to develop an appropriate system for industrial purpose. Prior to this, the correlation between biological and physical parameters must be determined. In this work, we combined colour science with the experimentally determined dataset from the cultivation of Microchloropsis salina. Our results indicate a resilient correlation between algal biomass and its specific pigment concentration with the determined reflection spectrum. Data evaluation allowed us to establish identification models for contactless quantification of the respective biological parameter in large-scale automated bioreactors.


2020 ◽  
Vol 474 (1-2) ◽  
pp. 277-284
Author(s):  
Arun Meyyazhagan ◽  
Balamuralikrishnan Balasubramanian ◽  
Murugesh Easwaran ◽  
Karthick Kumar Alagamuthu ◽  
Sureshkumar Shanmugam ◽  
...  
Keyword(s):  

2019 ◽  
Author(s):  
NINDYA YUSNIARTANTI

Source of raw water in PDAM of Blitar City had taken away from groundwater (well drill). Especially for Gedog’s well drill, the quality of raw water for physical and biological parameter have fulfilled, but for chemical parameter not yet fulfilled. Iron concentration ( Fe2+) in raw water amount 0,536 mg / L. Research limited by making a unit of aeration process such as tray aerator on a laboratory scale. Research conducted by variation amount of tray (2 trays and 3 trays) and contact media type (charcoal and gravel). The highest result of these research for all parameter obtained from result of variation with the amount of 3 trays and media contact charcoal, with an efficiency of removal equal to 83,96% for the removal of Fe, 32,43% for the removal of Mn, and 21,43% for the removal of an organic matterKeywords: Gravel, Charcoal, Tray Aerator, Groundwater


2019 ◽  
Vol 57 (8) ◽  
pp. 6212-6225 ◽  
Author(s):  
Cheng Hu ◽  
Weidong Li ◽  
Rui Wang ◽  
Teng Long ◽  
Changjiang Liu ◽  
...  

2019 ◽  
Vol 1 (2) ◽  
pp. 9
Author(s):  
Yelfira Sari

Water quality can be determined by doing certain test. Common parameter for determination water quality was physical, chemical, and biological parameter. This research was determined physical parameter, such as water colour, temperature, and TDS. Water colour determination was using eyesight sense while for temperature and TDS using a tool, thermometer for temperature determination and TDS-meter for TDS determination. Samples were taken from 5 Kelurahan in Dumai Timur District, that is Kelurahan Bukit Batrem, Kelurahan Buluh Kasap, Kelurahan Jaya Mukti, Kelurahan Tanjung Palas, and Kelurahan Teluk Binjai. Samples was taken from citizen wells which was selected in random as many as 2 samples for each Kelurahan. Water quality from samples was measured based on Regulation of Minister for Public Health No:416/MEN.KES/PER/IX/1990. Result of this research showed that all of water sample from Dumai Timur District were improper in physical parameter because of the water were turbid.


2019 ◽  
Vol 11 (1) ◽  
pp. 170-173 ◽  
Author(s):  
Sitraka A Raharinavalona ◽  
Nicolas Chevalier ◽  
Claude Gruel ◽  
André‐Christian N'toutoum ◽  
Fritz‐Line Vélayoudom Céphise

Omni-Akuatika ◽  
2018 ◽  
Vol 14 (2) ◽  
Author(s):  
Herman Hamdani ◽  
Asep Sahidin ◽  
Taufiq Hidayat

The research about generation times of Daphnia sp. was carried out on Mei – June 2017 in Biology Laboratory, FPIK UNPAD. The objective of this research was to analyse the generation time of Daphnia sp. in different manure. The research used experimental  method Randomized Completely Block Design (RCBD) with four treatment and three replication. The variant of manure as treatment were chicken manure (A), quail manure (B), cow manure (C), and goat manure (D). The weight for each manure media as many as  2,4 g/l in 1 litre of glass media. The best performance of life table distribution showed from the cow manure, but quail manure treatment give the best of all biological factor, it mean that Daphnias were cultured with quail manure have good performance in biological parameter. 


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