Characterization of Fluorescence in the Marine Environment

2007 ◽  
Author(s):  
Charles H. Mazel
Keyword(s):  
Marine Environment

scholarly journals Enhanced production, purification and biochemical characterization of therapeutic potential fibrinolytic enzyme from a new Bacillus flexus from marine environment

2020 ◽  
Vol 32 (7) ◽  
pp. 3174-3180
Author(s):  
Dunia A. Al Farraj ◽  
T. Sujin Jeba Kumar ◽  
Ponnuswamy Vijayaraghavan ◽  
Mohamed Soliman Elshikh ◽  
Roua M. Alkufeidy ◽  
...  
Keyword(s):  
Marine Environment ◽  
Biochemical Characterization ◽  
Therapeutic Potential ◽  
Fibrinolytic Enzyme ◽  
Enhanced Production ◽  
Bacillus Flexus

scholarly journals Characterization of Slag Reprocessing Tailings-Based Geopolymers in Marine Environment

Minerals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 832 ◽  
Author(s):  
Jie Wu ◽  
Jing Li ◽  
Feng Rao ◽  
Wanzhong Yin
Keyword(s):  
Compressive Strength ◽  
Marine Environment ◽  
Copper Slag ◽  
X Ray Diffraction ◽  
Strength Measurement ◽  
X Ray ◽  
Sodium Aluminosilicate ◽  
Marine Concrete ◽  
Sodium Aluminosilicate Hydrate

In this study, copper slag reprocessing tailings (CSRT) were synthesized into geopolymers with 40%, 50% and 60% metakaolin. The evolution of compressive strength and microstructures of CSRT-based geopolymers in a marine environment was investigated. Except for compressive strength measurement, the characterizations of X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR) and scanning electron microscopy (SEM) were included. It was found that marine conditions changed the Si/Al ratio in the sodium-aluminosilicate-hydrate (N-A-S-H) gel backbone, promoted the geopolymerization process, led to more Q4(3Al), Q4(2Al) and Q4(1Al) gel formation and a higher compressive strength of the geopolymers. This provided a basis for the preparation of CSRT-based geopolymers into marine concrete.

ISOLATION AND CHARACTERIZATION OF BIOTECHNOLOGY RELEVANT BACTERIA FROM MARINE ENVIRONMENT

2015 ◽  
Vol 77 (31) ◽  
Author(s):  
Suganthi Thevarajoo ◽  
Chitra Selvaratnam ◽  
Kian Mau Goh ◽  
Fazilah Abd. Manan ◽  
Zaharah Ibrahim ◽  
...  
Keyword(s):  
16S Rrna ◽  
Marine Environment ◽  
Antibiotic Sensitivity ◽  
Marine Microorganisms ◽  
Bacterial Strains ◽  
Biochemical Tests ◽  
16S Rrna Sequence ◽  
Gram Staining ◽  
Isolation And Characterization

Marine environment remained as largely unexplored source for researchers to discover marine microorganisms with novel properties. This study aims to isolate marine bacteria from the seashore of Desaru, Malaysia. Totally, six bacterial strains were successfully obtained and were identified by complete 16S rRNA sequencing. The characterizations of bacterial strains were performed based on morphological tests, Gram-staining, biochemical tests, and antibiotic sensitivity. The 16S rRNA sequence of D-2, D-4, D-7, D-15, D-31, and D-33 revealed a high identity of 97 to 99% with taxa belong to genera of Pseudomonas, Marinomonas, Exiquobacterium, Micrococcus, Pseudoalteromonas, and Shewanella respectively. Strain D-31 exhibited higher tolerance towards antibiotics kanamycin, ampicillin, and erythromycin while the growth of other strains were retarded by at least two of these antibiotics. We further characterized strain D-4 and D-31 that belonged to Marinomonas sp. and Pseudoalteromonas sp.. Both genera are interesting as earlier researchers have discovered new antibacterial substances, industrial enzymes and unique secondary metabolites.

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