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Sicard, Yves The Korean Vacuum Society 2010 Applied Science and Convergence Technology Vol.19 No.6
나노물질의 위험성에 관한 지식과 규제가 부족하지만, 지속가능하고 책임있는 나노기술의 발전을 위해서는 나노물질의 잠재적인 위험을 언급해야 한다. 이 논문에서는 이러한 문제를 해결할 수 있는, 웹에 기반한 교육 및 소통 도구인 '나노스마일'을 소개한다. 원래 프랑스 원자력청 내부 교육을 위해 개발된 '나노스마일'은 2006년 유럽 과제인 '나노세이2'에 포함되면서 그 대상을 일반 대중까지 포함하고 서로 작용하는 웹사이트로 발전되었다. 웹사이트 운용 중 수집된 훈련과정에서의 반향과 웹사이트의 전망 및 한계도 서술되어 있다. For sustainable and responsible development of nanotechnology, the risk issues in nanomaterials must be properly addressed despite the lack of relevant knowledge and regulations. In this paper, 'Nanosmile' as an example of web-based tool for education and dialogue for the risk issues, is introduced. First developed at Atomic Energy Commissary (CEA) for in-house training, Nanosmile was integrated to European project NanoSafe2 in 2006 and evolved into an interactive website opening to the public at large. The feedback during the training process, perspectives and limitations of the website are also presented.
Yves Sicard 한국진공학회 2010 Applied Science and Convergence Technology Vol.19 No.6
For sustainable and responsible development of nanotechnology, the risk issues in nanomaterials must be properly addressed despite the lack of relevant knowledge and regulations. In this paper, ‘Nanosmile’ as an example of web-based tool for education and dialogue for the risk issues, is introduced. First developed at Atomic Energy Commissary (CEA) for in-house training, Nanosmile was integrated to European project NanoSafe2 in 2006 and evolved into an interactive website opening to the public at large. The feedback during the training process, perspectives and limitations of the website are also presented.
Li, J H,Sicard, F,Salam, M A,Baek, M,LePrince, J,Vaudry, H,Kim, K,Kwon, H B,Seong, J Y Journal of Endocrinology (Ltd. by Guarantee) 2005 Journal of molecular endocrinology Vol.34 No.3
<P>Neurotensin (NT) is a tridecapeptide that functions as a neurotransmitter and neuromodulator in the nervous system. To date, three different types of NT receptor (NTR), NTR1, NTR2 and NTR3, have been identified only in mammalian species. In the present study we isolated the cDNAs for an NTR1 and a novel NTR in the bullfrog brain, designated bfNTR1 and bfNTR4 respectively. bfNTR1 and bfNTR4 encode 422- and 399-amino acid residue proteins respectively. bfNTR1 has a 64% amino acid identity with mammalian NTR1, and 34-37% identity with mammalian NTR2. bfNTR4 exhibits 43% and 45-47% identity with mammalian NTR1 and NTR2 respectively. Both receptors are mainly expressed in the brain and pituitary. bfNTR1 triggers both CRE-luc, a protein kinase A (PKA)-specific reporter, and c-fos-luc, a PKC-specific reporter, activities, indicating that bfNTR1 can activate PKA- and PKC-linked signaling pathways. However, bfNTR4 appears to be preferentially coupled to the PKA-linked pathway as it induces a higher CRE-luc activity than c-fos-luc activity. bfNTRs exhibit different pharmacological properties as compared with mammalian NTRs. Mammalian NTR1 but not NTR2 responds to NT, whereas both bfNTR1 and bfNTR4 show a high sensitivity to NT. SR 48692 and SR 142948A, antagonists for mammalian NTR1 but agonists for mammalian NTR2, function as antagonists for both bfNTR1 and bfNTR4. In conclusion, this report provides the first molecular, pharmacological and functional characterization of two NTRs in a non-mammalian vertebrate. These data should help to elucidate the phylogenetic history of the G protein-coupled NTRs in the vertebrate lineage as well as the structural features that determine their pharmacological properties.</P>
Matrix stiffness-modulated proliferation and secretory function of the airway smooth muscle cells.
Shkumatov, Artem,Thompson, Michael,Choi, Kyoung M,Sicard, Delphine,Baek, Kwanghyun,Kim, Dong Hyun,Tschumperlin, Daniel J,Prakash, Y S,Kong, Hyunjoon American Physiological Society 2015 American journal of physiology. Lung cellular and Vol.308 No.11
<P>Multiple pulmonary conditions are characterized by an abnormal misbalance between various tissue components, for example, an increase in the fibrous connective tissue and loss/increase in extracellular matrix proteins (ECM). Such tissue remodeling may adversely impact physiological function of airway smooth muscle cells (ASMCs) responsible for contraction of airways and release of a variety of bioactive molecules. However, few efforts have been made to understand the potentially significant impact of tissue remodeling on ASMCs. Therefore, this study reports how ASMCs respond to a change in mechanical stiffness of a matrix, to which ASMCs adhere because mechanical stiffness of the remodeled airways is often different from the physiological stiffness. Accordingly, using atomic force microscopy (AFM) measurements, we found that the elastic modulus of the mouse bronchus has an arithmetic mean of 23.1 ± 14 kPa (SD) (median 18.6 kPa). By culturing ASMCs on collagen-conjugated polyacrylamide hydrogels with controlled elastic moduli, we found that gels designed to be softer than average airway tissue significantly increased cellular secretion of vascular endothelial growth factor (VEGF). Conversely, gels stiffer than average airways stimulated cell proliferation, while reducing VEGF secretion and agonist-induced calcium responses of ASMCs. These dependencies of cellular activities on elastic modulus of the gel were correlated with changes in the expression of integrin-관1 and integrin-linked kinase (ILK). Overall, the results of this study demonstrate that changes in matrix mechanics alter cell proliferation, calcium signaling, and proangiogenic functions in ASMCs.</P>
Speed Control of Linear Induction Motor using Sliding Mode Controller Considering the End Effects
Boucheta, A.,Bousserhane, I.K.,Hazzab, A.,Sicard, P.,Fellah, M.K. The Korean Institute of Electrical Engineers 2012 Journal of Electrical Engineering & Technology Vol.7 No.1
In the present paper, the mover speed control of a linear induction motor (LIM) using a sliding mode control design is proposed, considering the end effects. First, the indirect field-oriented control LIM is derived, considering the end effects. The sliding mode control design is then investigated to achieve speed- and flux-tracking under load thrust force disturbance. The numerical simulation results of the proposed scheme present good performances in comparison to that of the classical sliding mode control.
Fuzzy Logic Speed Control Stability Improvement of Lightweight Electric Vehicle Drive
Nasri, Abdelfatah,Hazzab, Abdeldjabar,Bousserhane, Ismail.K,Hadjeri, Samir,Sicard, Pierre The Korean Institute of Electrical Engineers 2010 Journal of Electrical Engineering & Technology Vol.5 No.1
To be satisfied with complex load condition of electric vehicle, fuzzy logic control (FLC) is applied to improve speed response and system robust performance of induction traction machine based on indirect rotor field orientation control. The proposed propulsion system consists of two induction motors (IM) that ensure the drive of the two back driving wheels of lightweight electric vehicle by means the vehicle used for passenger transportation. The electronic differential system ensures the robust control of the vehicle behavior on the road. It also allows controlling, independently, every driving wheel to turn at different speeds in any curve. Our electric vehicle fuzzy inference system control's simulated in Matlab SIMULINK environment, the results obtained present the efficiency and the robustness of the proposed control with good performances compared with the traditional PI speed control, the FLC induction traction machine presents not only good steady characteristic, but with no overshoot too.
Fuzzy-Sliding Mode Speed Control for Two Wheels Electric Vehicle Drive
Nasri, Abdelfatah,Hazzab, Abdeldjabar,Bousserhane, Ismail Khalil,Hadjeri, Samir,Sicard, Pierre The Korean Institute of Electrical Engineers 2009 Journal of Electrical Engineering & Technology Vol.4 No.4
Electric vehicles (EV) are developing fast during this decade due to drastic issues on the protection of environment and the shortage of energy sources, so new technologies allow the development of electric vehicles (EV) by means of electric motors associated with static converters. The proposed propulsion system consists of two induction motors (IM) that ensure the drive of the two back driving wheels. The electronic differential system ensures the robust control of the vehicle behavior on the road. It also allows controlling, independently, every driving wheel to turn at different speeds in any curve. This paper presents the study of an hybrid Fuzzy-sliding mode control (SMC) strategy for the electric vehicle driving wheels, stability improvement, in which the fuzzy logic system replace the discontinuous control action of the classical SMC law. Our electric vehicle fuzzy-sliding mode control's simulated in Matlab SIMULINK environment, the results obtained present the efficiency of the proposed control with no overshoot, the rising time is perfected with good disturbances rejections comparing with the classical control law.
Speed Control of Linear Induction Motor using Sliding Mode Controller Considering the End Effects
A. Boucheta,I. K. Bousserhane,A. Hazzab,P. Sicard,M. K. Fellah 대한전기학회 2012 Journal of Electrical Engineering & Technology Vol.7 No.1
In the present paper, the mover speed control of a linear induction motor (LIM) using a sliding mode control design is proposed, considering the end effects. First, the indirect field-oriented control LIM is derived, considering the end effects. The sliding mode control design is then investigated to achieve speed- and flux-tracking under load thrust force disturbance. The numerical simulation results of the proposed scheme present good performances in comparison to that of the classical sliding mode control.
Backstepping Control for Multi-Machine Web Winding System
Bouchiba, Bousmaha,Hazzab, Abdeldjebar,Glaoui, Hachemi,Med-Karim, Fellah,Bousserhane, Ismail Khalil,Sicard, Pierre The Korean Institute of Electrical Engineers 2011 Journal of Electrical Engineering & Technology Vol.6 No.1
This work treat the modeling and simulation of non-linear dynamic behavior of a web winding process during traction. We designate by a winding process any system applying the cycles of unwinding, transport, treatment, and winding to various flat products. This system knows several constraints, such as the thermal effects caused by the frictions, and the mechanical effects provoked by metal elongation, that generates dysfunctions due to the influence of the process conditions. Several controllers are considered, including Proportional-integral (PI) and Backstepping control. This paper presents the study of Backstepping controls strategy of the winding system. Our winding system is simulated in MATLAB SIMULINK environment, the results obtained illustrate the efficiency of the proposed control with no overshoot, and the rising time is improved with good disturbances rejections comparing with the classical control law.
Fuzzy Logic Speed Control Stability Improvement of Lightweight Electric Vehicle Drive
Abdelfatah Nasri,Abdeldjabar Hazzab,Ismail.K Bousserhane,Samir Hadjeri,Pierre Sicard 대한전기학회 2010 Journal of Electrical Engineering & Technology Vol.5 No.1
To be satisfied with complex load condition of electric vehicle, fuzzy logic control (FLC) is applied to improve speed response and system robust performance of induction traction machine based on indirect rotor field orientation control. The proposed propulsion system consists of two induction motors (IM) that ensure the drive of the two back driving wheels of lightweight electric vehicle by means the vehicle used for passenger transportation. The electronic differential system ensures the robust control of the vehicle behavior on the road. It also allows controlling, independently, every driving wheel to turn at different speeds in any curve. Our electric vehicle fuzzy inference system control’s simulated in Matlab SIMULINK environment, the results obtained present the efficiency and the robustness of the proposed control with good performances compared with the traditional PI speed control, the FLC induction traction machine presents not only good steady characteristic, but with no overshoot too.