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RISS 인기검색어
- 검색키워드
- 저자 : Asadpour, Akram (검색결과 4 건)
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Effect of Nitrogen and Boron Localization on the Electrical Properties of Porous Graphene
Mahmoud Jafari,Shima Nazifi,Mohamad Asadpour 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2017 NANO Vol.12 No.9
The electrical properties of porous graphene (PG) are investigated by using the density functional theory (DFT) with the generalized gradient approximation (GGA). The addition of Boron and nitrogen impurities could change the semiconductor into the n or p-type. Results showed that PG had pseudo-metal properties and a direct band gap. Furthermore, adding two impurities resulted in a greater decrease in the energy of the band gap as compared to the other states. In particular, when two impurities were of the boron type, the reduction was more tangible. Moreover, the addition of impurity could also increase the conductivity and pushed the electrical properties toward being a metal.
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ZMP Analysis for Dynamic Walking of a Passivity-based Biped Robot with Flat Feet
Nima Fatehi,Adel Akbarimajd,Masoud Asadpour 제어로봇시스템학회 2010 제어로봇시스템학회 국제학술대회 논문집 Vol.2010 No.10
Zero moment point has been usually employed for balance keeping and walking analysis of active biped robots with bent knees, while balance and walking stability analysis of passive robots has been done using cyclic analysis approaches. While the problem in general is common, the two approaches have been separated in the literature for two different classes of passivity-based and ZMP-based robots. In this paper we have made a ZMP analysis for a passivity-based biped robot. The robot has been simulated using MSC Adams and Matlab/Simulink and a stable walking is achieved for a defined walking policy which is based on passivity-based walking with hips and ankles actuated and knee joints considered passive. The trajectory of ZMP is extracted and discussed during a stable walking. The role of Achill"s spring on ZMP is discussed and the overall profile of ZMP trajectory and its changes at specific crucial events, like knee strike and heel strike, is analyzed.
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The Effect of Acupuncture on Relieving Pain after Inguinal Surgeries
Taghavi, Rahim,Tabasi, Kamyar Tavakoli,Mogharabian, Nasser,Asadpour, Akram,Golchian, Amir,Mohamadi, Shabnam,Kabiri, Azade Ataran The Korean Pain Society 2013 The Korean Journal of Pain Vol.26 No.1
Background: Postoperative pain is one of the most prevalent and bothersome issues found in the surgical department. Nowadays, there are various methods of acupuncture used for relieving pain without the complications found in some routine postoperative analgesics. These methods could be especially useful for high risk patients prone to complications from analgesics, such as transplantation recipients. The aim of this study was to evaluate the efficacy of electro-acupuncture on postoperative pain control after inguinal surgeries. Methods: Ninety male patients, who were referred to our department with indications of inguinal surgery, were included in the study and randomly divided into two groups, such as acupuncture and control. We used electro-acupuncture for the acupuncture group and no actual acupuncture (but placed needle electrodes similar to the acupuncture group) for the control group. Postoperative pain was quantified by a blind observer in both groups using a visual analogue scale (VAS) standard score before being compared. Results: Pain intensity and analgesic use were significantly higher in the control group (P < 0.05). In the acupuncture group, the VAS pain scores were significantly lower than the control group at 0.5, 1 and 2 hours post operation. When the opioid related side effects were compared for each group, the results showed that the number of subjects who experienced dizziness in the acupuncture group was significantly lower than the control group (P < 0.05). Conclusions: Acupuncture in patients, after inguinal surgery, can reduce the need of analgesics, which also directly reduces the complications that may occur when analgesics are used in relieving pain postoperatively.
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The Effect of Acupuncture on Relieving Pain after Inguinal Surgeries
( Rahim Taghavi ),( Kamyar Tavakoli Tabasi ),( Nasser Mogharabian ),( Akram Asadpour ),( Amir Golchian ),( Shabnam Mohamadi ),( Azade Ataran Kabiri ) 대한통증학회 2013 The Korean Journal of Pain Vol.26 No.1
Background: Postoperative pain is one of the most prevalent and bothersome issues found in the surgical department. Nowadays, there are various methods of acupuncture used for relieving pain without the complications found in some routine postoperative analgesics. These methods could be especially useful for high risk patients prone to complications from analgesics, such as transplantation recipients. The aim of this study was to evaluate the efficacy of electro-acupuncture on postoperative pain control after inguinal surgeries. Methods: Ninety male patients, who were referred to our department with indications of inguinal surgery, were included in the study and randomly divided into two groups, such as acupuncture and control. We used electro- acupuncture for the acupuncture group and no actual acupuncture (but placed needle electrodes similar to the acupuncture group) for the control group. Postoperative pain was quantified by a blind observer in both groups using a visual analogue scale (VAS) standard score before being compared. Results: Pain intensity and analgesic use were significantly higher in the control group (P < 0.05). In the acupuncture group, the VAS pain scores were significantly lower than the control group at 0.5, 1 and 2 hours post operation. When the opioid related side effects were compared for each group, the results showed that the number of subjects who experienced dizziness in the acupuncture group was significantly lower than the control group (P < 0.05). Conclusions: Acupuncture in patients, after inguinal surgery, can reduce the need of analgesics, which also directly reduces the complications that may occur when analgesics are used in relieving pain postoperatively. (Korean J Pain 2013; 26: 46-50)
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