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Jasna Canadanovic-Brunet,Gordana Cetkovic,Sonja Djilas,Vesna Tumbas,Gordana Bogdanovi?,Anamarija Mandi?,Sinisa Markov,Dragoljub Cvetkovi?,Vladimir Canadanovi? 한국식품영양과학회 2008 Journal of medicinal food Vol.11 No.1
The aromatic herb Melissa officinalisL. can be used as an easily accessible source of natural antioxidants andas a possible food supplement and as a phytochemical. Radical scavenging, antibacterial, and antiproliferative activities of pe-troleum ether, chloroform, ethyl acetate, n-butanol, and water extracts of M. officinalis L. extracts were investigated. The re-sults of antioxidative activity, obtained by electron spin resonance spectroscopy, confirmed that investigated extracts sup-pressed the formation of 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, and lipid peroxyl radicals in all investigated systemsin a dose-dependent manner. The maximum DPPH and hydroxyl radical scavenging activities (SADPPH. SAOH . 100%)were achieved in the presence of n-butanol extract at concentrations of 0.4 mg/mL and 0.5 mg/mL, respectively. The highestlipid peroxyl scavenging activity (93.20%) was observed at a higher concentration (5 mg/mL) ofn-butanol extract in the lipidperoxidation system. The most effective antibacterial activities were expressed by petroleum ether and ethyl acetate extractson Sarcina lutea. Chloroform extract showed the strongest antiproliferative effect with 50% inhibitory concentration valuesof 0.09 mg/mL and 0.10 mg/mL for HeLa and MCF-7 cell lines, respectively. The present study demonstrated the high phe-nolic content and radical scavenging, antibacterial, and antiproliferative activities of extracts of M. officinalisL. originatingfrom Serbia.
UV Disinfection of Wastewater : Key Factors for Effective System Design
Wright, H.,Brunet, R.,Sakamoto, G.,Cairns, W. 영남대학교 환경문제연구소 2000 環境硏究 Vol.19 No.2
UV disinfection causes cross-linking of the DNA of micro-organisms, preventing their replication. The UV dose determines the level of disinfection, and is the product of UV germicidal intensity and reactor retention time. Reactors size depends on the flow and required dose for the water quality to be treated. Water quality is a function of the upstream treatment process, as shown through lab and pilot scale analysis of the UV dose response of effluent from primary, secondary, and tertiary plants. The most important water quality parameters are the ultraviolet transmittance (UVT) of the wastewater, and both the size and number of particles produced. As the level of treatment increases, the total suspended solids (TSS) generally decrease and UVT improves, reducing the reactor size. The use of ferric based flocculating agents decreases UVT and negatively impacts disinfection performance as compared with alum. Fouling of the quartz sleeves is increased with ferric flocculants.
Massimo Canale,Simone Casale-Brunet 제어·로봇·시스템학회 2014 International Journal of Control, Automation, and Vol.12 No.5
This work introduces an educational framework based on the Lego Mindstorms NXT robotic platform used to outline both the theoretical and practical aspects of the Model Predictive Control (MPC) theory. The framework has been developed in the widely used MatLab/Simulink environment. A two-wheeled inverted pendulum is considered as hands-on experimental scenario. For such a system, starting from its mathematical modeling, an established design methodology is presented aiming to outline step-by-step the predictive controller implementation on a low power architecture. This methodology stress the design of a non-linear MPC controller on a low power embedded system, pruning the designer to deal with hard real time constraints without impacting the overall design requirements. The effectiveness of this multidisciplinary approach is shown through this presentation and demonstrated with experimental results.
“Direct” Mechanical Thrombectomy in Acute Ischemic Stroke during Percutaneous Coronary Intervention
Vasu Saini,Marie-Christine Brunet,Samir Sur,Amer M. Malik,Priyank Khandelwal,Shashvat Desai,Robert M. Starke,Eric C. Peterson,Ashutosh P. Jadhav,Mauricio G. Cohen,Dileep R. Yavagal 대한뇌졸중학회 2020 Journal of stroke Vol.22 No.2
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Dragana D. Četojević-Simin,Jasna M. C ˇ anadanovic´-Brunet,Gordana M. Bogdanovic,Sonja M. Djilas,Gordana S. C ´ etkovic,Vesna T. Tumbas,Bratislav T. Stojiljkovic 한국식품영양과학회 2010 Journal of medicinal food Vol.13 No.2
In this study we investigated antioxidative and antiproliferative activity of different horsetail (Equisetum arvense L.) extracts. The antioxidative activity was measured by the electron spin resonance (ESR) spectroscopy–spin trapping method. The influence of different horsetail extracts during lipid peroxidation of (1) sunflower oil induced by the lipophilic azo-initiator 4,4'-azobis(4-cyanovaleric acid) and (2) soybean phosphatidylcholine liposomes induced by the hydrophilic azo-initiator 2,2'-azobis(2-amidinopropane) dihydrochloride was studied. Antiproliferative activity was measured using the sulforhodamine B colorimetric assay on the human cancer cell lines HeLa, HT-29, and MCF7. The results of ESR analysis confirmed that the extracts investigated suppressed the formation of lipid peroxyl radicals in both systems investigated in a dose-dependent manner. The results indicate that n-butanol, methanol, ethyl acetate, and water extracts had significant peroxyl radical scavenging activity. Extracts inhibited cell growth that was dependent on cell line, type of extract, and extract concentration. Ethyl acetate extract exhibited the most prominent antiproliferative effect, without inducing any cell growth stimulation on human tumor cell lines. The results obtained suggest that the horsetail extracts could be used as an easily accessible source of natural antioxidants and as potential phytochemicals.
Michalec, Franç,ois-Gaë,l,Holzner, Markus,Barras, Alexandre,Lacoste, Anne-Sophie,Brunet, Loï,c,Lee, Jae-Seong,Slomianny, Christian,Boukherroub, Rabah,Souissi, Sami Elsevier 2017 Environmental pollution Vol.228 No.-
<P><B>Abstract</B></P> <P>Calanoid copepods play an important role in the functioning of marine and brackish ecosystems. Information is scarce on the behavioral toxicity of engineered nanoparticles to these abundant planktonic organisms. We assessed the effects of short-term exposure to nonfunctionalized gold nanoparticles on the swimming behavior of the widespread estuarine copepod <I>Eurytemora affinis</I>. By means of three-dimensional particle tracking velocimetry, we reconstructed the trajectories of males, ovigerous and non-ovigerous females. We quantified changes in their swimming activity and in the kinematics and geometrical properties of their motion, three important descriptors of the motility patterns of zooplankters. In females, exposure to gold nanoparticles in suspension (11.4 <I>μ</I>g L<SUP>−1</SUP>) for 30 min caused depressed activity and lower velocity and acceleration, whereas the same exposure caused minimal effects in males. This response differs clearly from the hyperactive behavior that is commonly observed in zooplankters exposed to pollutants, and from the generally lower sensitivity of female copepods to toxicants. Accumulation of gold nanoparticles on the external appendages was not observed, precluding mechanical effects. Only very few nanoparticles appeared sporadically in the inner part of the gut in some samples, either as aggregates or as isolated nanoparticles, which does not suggest systemic toxicity resulting from pronounced ingestion. Hence, the precise mechanisms underlying the behavioral toxicity observed here remain to be elucidated. These results demonstrate that gold nanoparticles can induce marked behavioral alterations at very low concentration and short exposure duration. They illustrate the applicability of swimming behavior as a suitable and sensitive endpoint for investigating the toxicity of nanomaterials present in estuarine and marine environments. Changes in swimming behavior may impair the ability of planktonic copepods to interact with their environment and with other organisms, with possible impacts on population dynamics and community structure.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We studied the motion of copepods exposed to non-functionalized gold nanoparticles. </LI> <LI> Exposure depressed swimming activity and velocity in females but not in males. </LI> <LI> This response differs from the hyperactivity commonly observed with pollutants. </LI> <LI> We observed accumulation neither in the digestive track nor on the appendages. </LI> <LI> Nanomaterials can induce marked behavioral toxicity at very low concentrations. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Evidence forνμ→ντappearance in the CNGS neutrino beam with the OPERA experiment
Agafonova, N.,Aleksandrov, A.,Anokhina, A.,Aoki, S.,Ariga, A.,Ariga, T.,Asada, T.,Autiero, D.,Ben Dhahbi, A.,Badertscher, A.,Bender, D.,Bertolin, A.,Bozza, C.,Brugnera, R.,Brunet, F.,Brunetti, G.,Buon American Physical Society 2014 PHYSICAL REVIEW D - Vol.89 No.5