http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
( Khaleghi M. ),( R. Kasra Kermanshahi ),( S. H. Zarkesh Esfahani ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.8
Evidence shows that probiotic bacteria can undergo substantial structural and morphological changes in response to environmental stresses, including antibiotics. Therefore, this study investigated the effects of penicillin G (0.015, 0.03, and 0.06 mg/l) on the morphology and adhesion of Lactobacillus acidophilus ATCC 4356, including the colony morphotype, biofilm production, hydrophobicity, H₂O₂ formation, S-layer structure, and slpA gene expression. Whereas only smooth colonies grew in the presence of penicillin, rough and smooth colony types were observed in the control group. L. acidophilus ATCC 4356 was found to be hydrophobic under normal conditions, yet its hydrophobicity decreased in the presence of the antibiotic. No biofilm was produced by the bacterium, despite testing a variety of different culture conditions; however, treatment with penicillin G (0.015-0.06 mg/l) significantly decreased its production of H₂O₂ formation and altered the S-layer protein structure and slpA gene expression. The S-protein expression decreased with 0.015 mg/l penicillin G, yet increased with 0.03 and 0.06 mg/l penicillin G. In addition, the slpA gene expression decreased in the presence of 0.015 mg/l of the antibiotic. In conclusion, penicillin G was able to alter the S-layer protein production, slpA gene expression, and certain physicochemical properties of Lactobacillus acidophilus ATCC 4356.
Carbon and graphite coating on Cu(OH)2 nanowires as high-performance supercapacitor electrode
Khaleghi Amir Hossein,Tahmasebi Kazem,Irannejad Ahmad 한국세라믹학회 2022 한국세라믹학회지 Vol.59 No.1
Copper hydroxide nanowires (CHNWs) prepared by chemical etching process, were covered by graphite and carbon coat- ing, to form hybrid supercapacitor electrodes. The carbon coating deposited by coconut soot, and the graphite coating was employed using the electrophoresis deposition method with no interaction steps . The results show that the specifi c capacitance of CHNWs is 40.2 F/cm 3 , which has an energy and power density of 3.6 Wh/cm 2 and 80.9 W/cm 2 , respectively. Cover- ing the surface of CHNWs by carbon increased the capacitance of the electrode to 114.7 F/cm 2 while the graphite coating enhanced the capacitance to 96.7 F/cm 2 . According to the FE-SEM observations, carbon uniformly covered the nanowires surface and a higher capacity is achieved in this sample. This sample showed energy density and power density of 10.2 Wh/cm2 and 162.9 W/cm 2 , respectively.
Computational Neuroscience Approach to Psychiatry: A Review on Theory-driven Approaches
Ali Khaleghi,Mohammad Reza Mohammadi,Kian Shahi,Ali Motie Nasrabadi 대한정신약물학회 2022 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.20 No.1
Translating progress in neuroscience into clinical benefits for patients with psychiatric disorders is challenging because it involves the brain as the most complex organ and its interaction with a complex environment and condition. Dealing with such complexity requires powerful techniques. Computational neuroscience approach to psychiatry integrates multiple levels and types of simulation, analysis and computation according to the different types of computational models to enhance comprehending, prediction and treatment of psychiatric disorder. This approach comprises two approaches: theory-driven and data-driven. In this review, we focus on recent advances in theory-driven approaches that mathematically and mechanistically examine the relationships between disorder-related changes and behavior at different level of brain organization. We discuss recent progresses in computational neuroscience models that relate to psychiatry and show how principles of neural computational modeling can be employed to explain psychopathology.
Mahnaz Khaleghi,Farkhonde Amin Shokravi,Nooshin Peyman,Maryam Moridi 대한가정의학회 2019 Korean Journal of Family Medicine Vol.40 No.3
Background: Studies have shown the health literacy effects on the general state of health and its related factors, as well as health outcomes, physical and mental health, and health-related quality of life. This study aimed to investi-gate the effect of training based on health literacy through social networking strategies to promote health-related quality of life among students of Islamic Azad University, Shahr Rey Branch, Iran.Methods: This randomized controlled trial was conducted on 120 students with poor or average quality of life score. Participants were randomly assigned into experimental and control groups (60 participants each). Health lit-eracy and quality of life data were collected at baseline, immediately after, and 3 months after intervention. The ed-ucational intervention was conducted online using social networking services. Data were analyzed using SPSS ver. 16.0 (SPSS Inc., Chicago, IL, USA).Results: The results showed no significant differences between the two groups in terms of health literacy and quali-ty of life at baseline (P=0.979 and 0.269, respectively). The mean score of health literacy and quality of life in the ex-perimental group, compared with the control group, significantly increased immediately after and 3 months after the intervention (P<0.001).Conclusion: The educational intervention administered by applying health literacy strategies online, through so-cial networking services, can be effective in improving the quality of life of students.
Single-Phase Fault Location in Four-Circuit Transmission Lines Based on Wavelet Analysis Using ANFIS
Ali Khaleghi,Mahmoud Oukati Sadegh 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.4
This paper presents an effi cient and eff ective method to determine the location of the single phase to ground fault in fourcircuit transmission lines. In the proposed method, wavelet analysis based on advanced signal processing techniques are used to extract important features and record the dynamic characteristics of the fault signal using current sampled data of one side of the line. In this regard, the ANFIS network is used to fi nd the relationship between the obtained characteristics from wavelet signal analysis of the fault signal and the changes in diff erent fault conditions. In proposed method, there is no need to know the type of the fault or line information. Also, determination of faulty circuit and the use of intelligent methods to reduce computations are among the advantages of the proposed method. Studies and simulations have been implemented on a four-circuit transmission line of 500 kV and 200 km in PSCAD software. The results of wavelet analysis have been applied as an input of ANFIS network in MATLAB software. The results of the simulations are based on the implementation of different fault conditions, including the faulty circuit, fault location, fault inception, and fault resistance. These results indicate the high accuracy of the proposed method.
Effects of Non-invasive Neurostimulation on Autism Spectrum Disorder: A Systematic Review
Ali Khaleghi,Hadi Zarafshan,Safa Rafieivand,Mohammad Reza Mohammadi 대한정신약물학회 2020 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.18 No.4
Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder characterized by major impairments in social communication, stereotyped and ritualistic behaviors and deficits in sensory reactivity. Recently, noninvasive brain stimulation (NIBS) methods, namely transcranial direct current stimulation (tDCS) and transcranial magnetic stimulation (TMS), have been examined as possible new therapeutic options for modifying the pathological neuroplasticity involved in neuropsychiatric disorders including ASD. Therefore, we conducted a systematic review on the therapeutic uses of tDCS and repetitive TMS (rTMS) in ASD patients. A systematic search was performed on Scopus, Web of Science, PubMed, Cochrane and Embase. Original articles reporting the use of tDCS or rTMS to treat ASD were screened and studied by two researchers independently based on PRISMA guidelines. We found 32 eligible studies including 8 tDCS reports, 23 rTMS reports and one report with both tDCS and rTMS. These studies comprised 6 case-reports, 9 non-controlled trials and 17 controlled trials which assessed NIBS effects on the three cognitive, behavioral and biological dimensions in ASD. Existing evidence demonstrates that NIBS methods could be helpful for treating some dimensions of ASD such as repetitive behavior, sociability or some aspects of executive and cognitive functions. However, such evidence should be regarded with care because of the quality of original researches and serious publication bias as well as the heterogeneity of data. Further randomized, double-blind, sham-controlled trials with appropriate follow-up periods should be designed to assess the efficacy of NIBS methods for ASD treatment.
Hossein Khaleghi,Hossein Esmaeili,Neamatollah Jaafarzadeh,Bahman Ramavandi 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.1
Activated carbon (AC) was produced from date seeds by a calcination process at 700 oС for 2 h and then its surface was improved with CaO and magnetic nanoparticles. AC/CaO/Fe3O4 nanocomposite was then employed to remove formaldehyde ions from aqueous media. The structural characteristics of the materials were completely studied through FT-IR, XRD, SEM, EDX, Map, VSM, BET and TEM analyses. The results showed that the nanocomposite has a mesoporous structure (average pore diameter~13 nm) with great sorption capability. Also, the utmost removal efficiency of formaldehyde using AC, AC/Fe3O4, CaO/Fe3O4 and AC/Fe3O4/CaO nanocomposite was 94.73, 95.67, 95.14 and 98.22%, respectively, indicating that the removal efficiency increases by improving the surface properties of the AC. Moreover, the uptake of formaldehyde using AC/Fe3O4/CaO nanocomposite follows the Freundlich isotherm and pseudo-2nd-order kinetic models. Furthermore, the highest sorption capacity of AC, AC/Fe3O4, CaO/Fe3O4 and AC/ Fe3O4/CaO nanocomposite using the Langmuir model was obtained 19.86, 24.21, 21.28 and 24.01mg/g, respectively. The thermodynamic study showed that formaldehyde sorption using all four adsorbents is exothermic and spontaneous. The reusability of the adsorbents was also evaluated after ten reuse cycles and the outcomes indicated that these four adsorbents have significant reusability. Moreover, the impact of interfering ions (e.g., carbonate, sulfate, phosphate, nitrate and chloride) showed that all of these compounds, except nitrate, had little competition with formaldehyde ions for adsorption on the nanocomposite surface.