Autor: Lotfi, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimal conditions for levan biopolymer production and its use in the synthesis of bactericidal levan-ZnO nanocomposite
Autorzy:: Taran, M.
Lotfi, M.
Safaei, M.
Powiązania:: https://bibliotekanauki.pl/articles/80561.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: biopolymer
levan biopolymer
zinc oxide
nanocomposite
Taguchi method
antibacterial activity
Zymomonas mobilis
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 4
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Nonlocal analysis of single and double-layered graphene cylindrical panels and nano-tubes under internal and external pressures considering thermal effects
Autorzy:: Dastjerdi, S.
Lotfi, M.
Jabbarzadeh, M.
Powiązania:: https://bibliotekanauki.pl/articles/281706.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: cylindrical graphene panels
nano-tube
nonlocal elasticity theory
first-order shear deformation theory
Opis:: Mechanical behavior of a bilayer graphene cylindrical panel and nano-tube is studied based on nonlocal continuum mechanics with regard to this aim, von-Karman assumptions and nonlocal theory of Eringen are considered. Then, the governing equations and boundary conditions have been derived applying energy method. While analyzing the bilayer cylindrical panel, the van der Waals interaction between the layers is considered in calculations. The constitutive equations are developed for nano-tubes under internal and external pressures. In order to solve the governing equations, the semi-analytical polynomial method (SAPM), which was presented by the authors before, is utilized and bending behavior of bilayer cylindrical panels and nano-tubes is investigated. Finally, the effects of temperature, boundary conditions, elastic foundation, loading, van der Waals interaction between the layers and single layer to bilayer analyses are studied for graphene cylindrical panels and nano-tubes.
Źródło:: Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 883-896
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigation of copper and gold prospects using index overlay integration method and multifractal modeling in Saveh 1:100,000 sheet, Central Iran
Perspektywy poszukiwań miedzi i złota metodą wskaźnika integracji i modelowania multifraktalnego w Saveh, skala 1:100 000, Centralny Iran
Autorzy:: Rezaei, S.
Lotfi, M.
Afzal, P.
Jafari, M. R.
Meigoony, M. S.
Khalajmasoumi, M.
Powiązania:: https://bibliotekanauki.pl/articles/215934.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:: geographic information system (GIS)
index overlay integration method
concentration area (C-A)
fractal model
Urumieh Dokhtar magmatic belt
Saveh 1:100,000 sheet
system informacji geograficznej
wskaźnik integracji
strefa złoża (C-A)
model fraktali
pas magmowy Urumieh Dokhtar
arkusz Saveh 1:100 000
Opis:: This study aims at prospecting copper and gold promising areas in Saveh 1:100,000 sheet, situated in Urumieh-Dokhtar magmatic belt (Central Iran). Geographic information system (GIS) is effective in recognition of probable mineral resources by collecting, processing, exploration layer weighting and integrating thematic maps. As there is no certainty in different geological phenomena, modeling and integrating information layers are used to obtain suitable results for determining potential areas. In this study, index overlay method, which is a combination of software processing and expertise knowledge, was used. The survey layers consist of the lithologic units, geophysical data, mineralization, faults and structures and alteration. [...]
Badanie to ma na celu poszukiwanie miedzi i złota z perspektywicznych obszarów w Saveh na arkuszu 1:100 000, położonego w pasie magmowym w Urumieh-Dokhtar (Centralny Iran). System informacji geograficznej (GIS) jest skuteczny w rozpoznaniu przypuszczalnych zasobów surowców mineralnych poprzez gromadzenie, przetwarzanie warstwy ważenia poszukiwań i integracji map tematycznych. W celu uzyskania właściwych wyników dla potrzeb określenia potencjalnych obszarów do eksploatacji, użyto techniki modelowania i zintegrowanej informacji o warstwach geologicznych. W tym badaniu została użyta metoda wskaźnikowa, która jest kombinacją komputerowego sposobu przetwarzania danych i wiedzy eksperckiej. Badane warstwy geologiczne opisane są pojęciami litologicznymi, danymi geofizycznymi, stopniem mineralizacji oraz zaburzeniami tektonicznymi. [...]
Źródło:: Gospodarka Surowcami Mineralnymi; 2015, 31, 4; 51-73
0860-0953
Pojawia się w:: Gospodarka Surowcami Mineralnymi
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: In vitro shoot proliferation of Passiflora caerulea L. via cotyledonary node and shoot tip explants
Autorzy:: Jafari, M.
Daneshvar, M.H.
Lotfi, A.
Powiązania:: https://bibliotekanauki.pl/articles/80666.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Passiflora caerulea
shoot proliferation
in vitro
acclimatization
plant growth regulator
regeneration
rooting
shoot explant
shoot multiplication
indole butyric acid
thidiazuron
cytokinin
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2017, 98, 2
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Fatigue behavior of hot mix asphalt modified with nano AL2O3 – an experimental study
Autorzy:: Lotfi-Eghlim, A.
Karimi, M. S.
Powiązania:: https://bibliotekanauki.pl/articles/102975.pdf
Data publikacji:: 2016
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: asphalt mixture
nano-Al2O3
fatigue life
final strains
Opis:: Nanotechnology is one of the most important research areas and is presented in the vast fields of knowledge such as road construction industry has been surrounded. This paper has focused on the potential benefits of nano particles for modification of asphalt mixtures. Nano Al2O3 due to its unique properties can improve the dynamic characteristics of hot mix asphalt. Fatigue life of asphaltic samples is determined with indirect tensile fatigue tests by using of UTM. The results show that fatigue life of modified asphalt mixtures in compare with conventional mix is significantly increased. Beside, based on experimental results and numerical analyses, a new model is presented for prediction the fatigue behavior of asphalt mixtures modified with nano Al2O3. This model can completely characterized the fatigue performance of modified asphalt under dynamic loading conditions and different temperatures.
Źródło:: Advances in Science and Technology. Research Journal; 2016, 10, 31; 58-63
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Software Systems Clustering Using Estimation of Distribution Approach
Autorzy:: Tajgardan, M.
Izadkhah, H.
Lotfi, S.
Powiązania:: https://bibliotekanauki.pl/articles/108635.pdf
Data publikacji:: 2016
Wydawca:: Społeczna Akademia Nauk w Łodzi
Tematy:: Software System
Clustering, Genetic Algorithm
Estimation of Distribution Algorithm (EDA)
Probability Model
Opis:: Software clustering is usually used for program understanding. Since the software clustering is a NP-complete problem, a number of Genetic Algorithms (GAs) are proposed for solving this problem. In literature, there are two wellknown GAs for software clustering, namely, Bunch and DAGC, that use the genetic operators such as crossover and mutation to better search the solution space and generating better solutions during genetic algorithm evolutionary process. The major drawbacks of these operators are (1) the difficulty of defining operators, (2) the difficulty of determining the probability rate of these operators, and (3) do not guarantee to maintain building blocks. Estimation of Distribution (EDA) based approaches, by removing crossover and mutation operators and maintaining building blocks, can be used to solve the problems of genetic algorithms. This approach creates the probabilistic models from individuals to generate new population during evolutionary process, aiming to achieve more success in solving the problems. The aim of this paper is to recast EDA for software clustering problems, which can overcome the existing genetic operators’ limitations. For achieving this aim, we propose a new distribution probability function and a new EDA based algorithm for software clustering. To the best knowledge of the authors, EDA has not been investigated to solve the software clustering problem. The proposed EDA has been compared with two well-known genetic algorithms on twelve benchmarks. Experimental results show that the proposed approach provides more accurate results, improves the speed of convergence and provides better stability when compared against existing genetic algorithms such as Bunch and DAGC.
Źródło:: Journal of Applied Computer Science Methods; 2016, 8 No. 2; 99-113
1689-9636
Pojawia się w:: Journal of Applied Computer Science Methods
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Comparative Investigation of River Water Quality by OWQI, NSFWQI and Wilcox Indexes (Case study: the Talar River – IRAN)
Autorzy:: Darvishi, G.
Kootenaei, F. G.
Ramezani, M.
Lotfi, E.
Asgharnia, H.
Powiązania:: https://bibliotekanauki.pl/articles/205410.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Talar River
water quality
Oregon water quality index
OWQI
national sanitation foundation water quality index
NSFWQI
Wilcox
Opis:: Rivers are considered as one of the main resources of water supply for various applications such as agricultural, drinking and industrial purposes. Also, these resources are used as a place for discharge of sewages, industrial wastewater and agricultural drainage. Regarding the fact that each river has a certain capacity for acceptance of pollutants, nowadays qualitative and environmental investigations of these resources are proposed. In this study, qualitative investigation of the Talar river was done according to Oregon Water Quality Index (OWQI), National Sanitation Foundation Water Quality Index (NSFWQI) and Wilcox indicators during 2011–2012 years at upstream, midstream and downstream of the river in two periods of wet and dry seasons. According to the results of OWQI, all of the values at 3 stations and both periods are placed at very bad quality category and the water is not acceptable for drinking purposes. According to NSFWQI, the best condition was related to the upstream station at wet season period (58, medium quality) and the worst condition was related to the downstream in wet season period (46, very bad quality). Also the results of Wilcox showed that in both periods of wet season and dry season, the water quality is getting better from upstream station to the downstream station, and according to the index classification, the downstream water quality has shown good quality and it is suitable for agriculture.
Źródło:: Archives of Environmental Protection; 2016, 42, 1; 41-48
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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