Results 31 to 40 of about 4,627 (181)

Occurrence of Harmful Algal Blooms in Freshwater Sources of Mindu and Nyumba ya Mungu Dams, Tanzania

Journal of Toxicology, 2023
Harmful algal blooms (HABs) pose a significant threat to aquatic ecosystems and human health due to the production of toxins. The identification and quantification of these toxins are crucial for water quality management decisions.
Josephine J. Gobry, Hilda S. Bachwenkizi, Offoro N. Kimambo, Faustin N. Ngassapa, Kessy F. Kilulya   +4 more
doaj   +1 more source

Highly plastic genome of Microcystis aeruginosa PCC 7806, a ubiquitous toxic freshwater cyanobacterium

BMC Genomics, 2008
Background The colonial cyanobacterium Microcystis proliferates in a wide range of freshwater ecosystems and is exposed to changing environmental factors during its life cycle.
Latifi Amel, Talla Emmanuel, Becker Sven, Ziemert Nadine, Zilliges Yvonne, Kehr Jan-Christoph, Gribaldo Simonetta, Zhang Cheng-Cai, Tolonen Andrew, Cortez Diego, Matthijs Hans CP, Humbert Jean-François, Castets Anne-Marie, Quillardet Philippe, Frangeul Lionel, Billault Alain, Lepelletier Anthony, Dittmann Elke, Bouchier Christiane, Tandeau de Marsac Nicole   +19 more
doaj   +1 more source

Ultrasound-enhanced coagulation for Microcystis aeruginosa removal

Ultrasonics Sonochemistry, 2009
Source water eutrophication has caused serious problems in drinking water supplies, with enhanced coagulation widely used to remove the resulting algae. This paper investigates the use of sonication to improve the removal by coagulation of Microcystis aeruginosa, a common species of toxic algae.
Guangming, Zhang, Panyue, Zhang, Maohong, Fan   +2 more
openaire   +2 more sources

Ultrasonic frequency effects on the removal of Microcystis aeruginosa

Ultrasonics Sonochemistry, 2006
Algae bloom in source water causes high chemical consumption and deteriorates water quality in waterworks. This paper studied the ultrasonic removal of Microcystis aeruginosa. The results showed that algae cells could be effectively removed by sonication and gas vesicle collapse was the main mechanism.
Guangming, Zhang, Panyue, Zhang, Bo, Wang, Hong, Liu   +3 more
openaire   +2 more sources

The occurrence of positive selection on BicA transporter of Microcystis aeruginosa

Ecotoxicology and Environmental Safety
The rapid growth of cyanobacteria, particularly Microcystis aeruginosa, poses a significant threat to global water security. The proliferation of toxic Microcystis aeruginosa raises concerns due to its potential harm to human health and socioeconomic ...
Eun-Jeong Kim, Huijeong Doh, Jihye Yang, Seong-il Eyun   +3 more
doaj   +1 more source

Quantification of the ultrasound induced sedimentation of Microcystis aeruginosa

Ultrasonics Sonochemistry, 2014
It has been known for more than 40 years that vacuolate organisms can be induced to sediment with ultrasound. However, robust indicators are still needed to compare the efficacy of different treatments. A repeatable index is proposed that makes it possible to quantify the ultrasonic induced sedimentation.
Rodriguez-Molares, A., Dickson, S., Hobson, P., Howard, C., Zander, A., Burch, M.   +5 more
openaire   +3 more sources

Bioalcohol Production with Microalgae, Microcystis aeruginosa [PDF]

KSBB Journal, 2012
The microalgae, Microcystis aeruginosa are able to proliferate in a wide range of freshwater ecosystem. M. aeruginosa was cultivated in 25 L and 240 L race-way reactor containing modified medium with added urea 0.2 g/L, increased Fe +2 , and decreased Ca +2 ion compared to BG11 medium. Sugar contents of M.
Jong Deog Kim, Go Woon Chae, Hyo Jin Seo, Narendra Chaudhary, Yang Ho Yoon, Tai Sun Shin, Min Yong Kim   +6 more
openaire   +1 more source

Rapid flotation of Microcystis wesenbergii mediated by high light exposure: implications for surface scum formation and cyanobacterial species succession

Frontiers in Plant Science
Increasing occurrences of Microcystis surface scum have been observed in the context of global climate change and the increase in anthropogenic pollution, causing deteriorating water quality in aquatic ecosystems.
Tiantian Yang, Tiantian Yang, Jiaxin Pan, Jiaxin Pan, Huaming Wu, Cuicui Tian, Cuicui Tian, Chunbo Wang, Chunbo Wang, Bangding Xiao, Bangding Xiao, Min Pan, Xingqiang Wu, Xingqiang Wu   +13 more
doaj   +1 more source

Toxicological effects of ciprofloxacin and chlorhexidine on growth and chlorophyll a synthesis of freshwater cyanobacteria

Brazilian Journal of Pharmaceutical Sciences, 2019
Cyanobacteria are phytoplanktonic microorganisms that are susceptible to the deleterious effects of pharmaceutical residues in the aquatic environment, which poses a challenge to the environment exposed to diverse pharmaceutical products and their ...
Fernanda Cristina Rezende Azevedo, Izabela Cristina Dias Vaz, Francisco Antônio Rodrigues Barbosa, Sérgia Maria Starling Magalhães   +3 more
doaj   +1 more source

Reprogramming tumor immune microenvironment by ultrasound‐responsive nanoplatforms for enhanced cancer immunotherapy

BMEMat, EarlyView.
Ultrasound‐responsive nanoplatforms reprogram the tumor immune microenvironment by targeting tumor cells, immune cells, and non‐immune stromal cells to enhance the efficacy of cancer immunotherapy. Abstract Cancer immunotherapy represents a significant advancement in cancer treatment by enhancing the specific recognition and elimination of cancer cells.
Shilong Zhao, Rui Qu, Zan Dai, Xiqun Jiang, Xu Zhen   +4 more
wiley   +1 more source