نتایج جستجو برای: algae

تعداد نتایج: 19083  

Journal: :The Journal of antibiotics 2001
N Imamura I Motoike N Shimada M Nishikori H Morisaki H Fukami

To improve the efficiency of screening for anti-Microcystis compounds, we planned to use algae-lysing bacteria that kill the organisms of water blooms. A two step-screening process was carried out, i.e., the screening of algae-lysing bacteria and the selection of anti-Microcystis producers from the bacteria. Sources for the isolation of the bacteria were a co-cultivated fluid of a water sample ...

2013
Ali Parsaeimehr Feng Chen

Algae are described as heterogeneous group of organisms with considerable metabolic diversities. Currently, various bioactive compounds are discovered, isolated and used from different classes of algae to develop novel pharmaceuticals. Detectable substances such as, sterols and stanols, isoprenoide, terpenoids, steroid, phenolic compounds, fatty acids, acrylic acid and alkaloids in their extrac...

ژورنال: سلامت و محیط زیست 2019

Background and Objective: Nutrient-rich effluents (mainly nitrogen and phosphorus) may lead to algae blooms and many harmful effects in aquatic environments. Micro-algae have been more effective among the various methods used for the removing of nutrients from wastewater. Microalgae Chlorella vulgaris has specific characteristics such as rapid growth, resistant to systems manipulation, simple a...

2017
Ligia Collado-Vides Valentina G. Caccia Joseph N. Boyer James W. Fourqurean

Tropical coastal marine ecosystems including mangroves, seagrass beds and coral reef communities are undergoing intense degradation in response to natural and human disturbances, therefore, understanding the causes and mechanisms present challenges for scientist and managers. In order to protect our marine resources, determining the effects of nutrient loads on these coastal systems has become ...

Journal: :دیرینه شناسی 0
رضا حنیف زاده کوروش رشیدی مهنازالسادات امیرشاهکرمی

a detailed study of the lower cretaceous dasyclad algae of the shahkuh formation was done in the chahpalang stratigraphic section (its name comes from the mountain in studied area). according to the study of the 101 thin sections, for the first time, we recognized 7 genus and 8 species of dasyclad algae from shah kuh formation in chah palang section including angioporella cf. fouryae, griphopor...

2011

 Algae can provide a variety of fuels for transport, heating or electricity generation, including biodiesel, aviation fuel and biogas.  Algal biofuels are at an experimental stage and are more expensive than fossil fuels.  Algal biofuels could be made more costeffective by extracting other valuable products from algae or incorporating their production into waste water treatment.  Commercial...

2012
Bo Wang Jiangxin Wang Weiwen Zhang Deirdre R. Meldrum

Cyanobacteria and algae are becoming increasingly attractive cell factories for producing renewable biofuels and chemicals due to their ability to capture solar energy and CO(2) and their relatively simple genetic background for genetic manipulation. Increasing research efforts from the synthetic biology approach have been made in recent years to modify cyanobacteria and algae for various biote...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2012
Joel M Hyman Erika I Geihe Brian M Trantow Bahram Parvin Paul A Wender

Interest in algae has significantly accelerated with the increasing recognition of their potentially unique role in medical, materials, energy, bioremediation, and synthetic biological research. However, the introduction of tools to study, control, or expand the inner-workings of algae has lagged behind. Here we describe a general molecular method based on guanidinium-rich molecular transporter...

M. Piri V. Ördog

The toxic effects of herbicides (Machete, Saturn) and pesticides (Diazinon and Malathion) on green algae, Scenedesmus obtusiusculus, and cyanobacteria, Anabaena flos aquae, were studied. The results indicated that Machete and Saturn, in comparison to Diazinon and Malathion, were more toxic. On the other hand it was revealed that green algae was more sensitive to the pesticides than the cyanobac...

Nowadays, organic fertilizers play an important role in agriculture. They are progressively substituting chemical fertilizers to prevent their harmful impact on human health and the environment. They provide high yield, better quality products and a shorter period of harvesting crops. In this study, the mineral elements: primary macronutrient (N, PO3- and K+), secondary macronutrient: (Ca2+, Mg...

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