The research, presented this week at the national meeting of the American Chemical Society*, was conducted to better understand the environmental impact of pharmaceuticals in waste water.
public_affairs/techbeat/tb2005_1222.htm#drugs), raising concerns about potential health impacts for both humans and animals from low-level but continuous exposure to the chemicals. NIST and NCSU researchers at the Hollings Marine Laboratory (Charleston, S.C.) examined the effect of fluoxetine, a selective serotonin reuptake inhibitor (SSRI) on a native freshwater mussel (Elliptio complanata). Fluoxetine, sold under the trade name ProzacTM, is one of the most heavily prescribed antidepressants in the United States. In humans, it acts to increase the levels of serotonin at nerve synapses, relieving depression and associated illnesses. But for a number of aquatic species, serotonin moderates the reproductive system--and has been used to artificially induce spawning in bivalves.
At laboratory test concentrations, they found, fluoxetine caused female mussels carrying larvae to release them prematurely, and often, before they were viable, disrupting their reproductive cycle. Approximately 70 percent of the almost 300 species of North American freshwater mussels are considered vulnerable to extinction or already extinct.
The finding also raises questions about the effect of fluoxetine on other aquatic species that share similar endocrine mechanisms. The research team currently is gathering environmental samples from local waters and sediments to compare environmental concentrations with their findings.
Michael Baum | EurekAlert!
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In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
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