Investigation Challenges And Guidelines Development Rural Tourism (Case Study:

Sayyed khalil Sayyed Ali pour 세계문화관광학회 2010 Conference Proceedings Vol.11 No.0

As one of the economic success factors in any country, tourism is an important income source for many countries. rural Residential areas, specially in developing countries where a number of people live face such hardships as immigration to cities, low employment, low agricultural productivity level, land or absence of infrastructures for entertainment and services. A great number of rural residential areas in Semnan Province have many tourist attraction potentials for their geographical advantages of landscapes, ancient buildings, climates variety, and traditions. Being an undeniable economic and social fact, it can satisfy the need for relaxation, getting acquainted with cultures, and enjoying natural beauties specially in the intact rural places. Semnan Province has a diversity of rural residential areas and tourist attraction sites, and the most attractive sites which enjoy a higher potential for tourism enter this study. Here we have conducted field and library research using two types of questionnaires distributed to rural residents and organizations responsible for tourism. The data was analyzed through the statistical software of SPSS.

Experimental study of the radiation shielding characteristics of new PbO– Na2O–B2O3–BaO glasses

Sayyed M.I.,Rilwan U.,Mahmoud K.A.,Elsafi Mohamed 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.7

This work synthesized four glass samples with a fixed ratio of PbO to Na2O and a variable ratio of BaO to B2O3. The linear attenuation coefficient (LAC) (μ, cm 1) and additional attenuator parameters were determined experimentally using a semiconductor detector and different gamma sources. The comparison was carried out between the experimental and the XCOM calculated results, with good agreement emerging between the two results. The impacts of the BaO substituting for the B2O3 on fabricated PNBB glasses’ radiation shielding properties were discussed. By increasing the BaO substitution concentration between 10 and 25 mol.%, the LAC μ values (cm 1) increased by 76.60 %, 13.81 %, 12.56 %, and 12.52 % for the respective γ-ray energies of 0.059, 0.662, 1.173, and 1.332 MeV. The μ value reduction with raised gamma energy values increased the values of the calculated half-value thickness (Δ0.5) as a result of the μ and Δ0.5 values’ reverse proportionality. Other shielding parameters such as the lead equivalent thickness (Δeq) and radiation protection efficiency were also determined for the present PNBB glass samples.

Research Paper : Influence of corn density and planting pattern on the growth of common Lambsquarters (Chenopodium album L.)

( Sayyed F. Saberali ),( Mohammand A. Baghestani ),( Eskandar Zand ) 한국잡초학회 2008 Weed Biology and Management Vol.8 No.1

Incorporation of Hydroxyapatite/Doxorubicin into the Chitosan/Polyvinyl Alcohol/Polyurethane Nanofibers for Controlled Release of Doxurubicin and Its Anticancer Property

Sayyed Sadroddin Qavamnia,Leila Roshanfekr Rad,Mohammad Irani 한국섬유공학회 2020 Fibers and polymers Vol.21 No.8

In the present study, the doxorubicin-hydroxyapatite (DOX-HAp) has been loaded into the chitosan/PVA/PUsingle layer and core-shell nanofibers. The potential of synthesized nanofibers was evaluated for controlled release of DOXand bone cancer treatment in vitro. The synthesized DOX-HAp nanohybrid was characterized using XRD, SEM, and UV-Visanalysis. The morphology of synthesized nanofibers was examined by SEM and TEM analysis. For single layer nanofibers,some DOX-HAp nanohybrids were observed on the nanofibers surface. The fiber diameter was increased by increasing shellflow rate and no DOX-HAp nanohybrids were detected on the core-shell fibers surface. The DOX encapsulation efficiency ofsingle layer and core-shell layer fibers was higher than 90 %. The initial burst release from single layer fiber at initial hoursand the continuous release of DOX was observed from single layer nanofibers during 7 and 10 days under acidic andphysiological pH. The sustained release of DOX was obtained within 10 and 14 days, 15 and 18 days, 21 and 25 days fromcore-shell fibers with flow rates of 0.3, 0.5 and 0.8 ml/h under acidic and physiological pH. The non-Fickian diffusion andFickian diffusion were achieved from single layer and core-shell nanofibers. The cell attachment and cell death resultsindicated the high potential of DOX loaded-core-shell fibers for bone cancer treatment.

A Novel Risk Evaluation Procedure Using a Kriging-Based Surrogate Modeling for Offshore Structures

Sayyed Mohsen Vazirizade,Achintya Haldar 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.7

An innovative reliability estimation procedure for Jacket-type offshore platforms is proposed. The information on risk is extracted using multiple deterministic analyses using advanced mathematical theories resulting in compounding beneficial effects. The platforms are modeled by finite elements. Nonlinearity and major sources of uncertainty are incorporated. The wave loading model is realistically developed to satisfy the underlying physics. It is applied in three-dimension in time domain incorporating the uncertainties in the parameters. Implicit performance functions are expressed explicitly using several advanced factorial schemes and significantly improved response surface method. The efficiency and accuracy of the method are improved using a comprehensively improved Kriging-based surrogate modeling technique. The risk is evaluated for the serviceability and strength limit state functions for a jacket-type offshore platform using about two hundred nonlinear finite element analyses. The procedure was verified using simulation techniques. The concept can be considered an alternative to the conventional random vibration techniques and the standard Monte Carlo simulation procedure.

In situ PKA activity assay by selective detection of its catalytic subunit using antibody arrays

Sayyed, D. R.,Jung, S. H.,Kim, M. S.,Han, E. T.,Park, W. S.,Hong, S. H.,Kim, Y. M.,Ha, K. S. Springer Science + Business Media 2017 BioChip Journal Vol.11 No.1

Numerical and experimental research on actuator forces in toggled active vibration control system (Part II: Experimental)

Sayyed Farhad Mirfakhraei,Hamid Reza Ahmadi,Ricky Chan 국제구조공학회 2021 Smart Structures and Systems, An International Jou Vol.28 No.5

In this research, new toggled actuator forces were proposed. For this purpose, numerical and experimental investigation of the installation of the actuator in a toggle configuration for the decreasing of active control forces in engineering structures has been carried out. In the first part, numerical studies were investigated. In addition to numerical research on the effects of the toggle configuration on actuator forces, an experimental investigation has been carried out by building a table model of the mentioned system. The algorithm of the system is LQR, and ATmega328 has been used as a control platform. Comparing results through the experimental and numerical processes express high matching that relies on mitigating control forces in the toggled active model. Based on the results, a significant reduction in actuator forces through using the proposed toggle configuration.

Economic Impact Evaluation of Tourism Development in Accordance With Sustainable Development, the Case

Sayyed Ali Badri,Mehdi Ramezanzadeh lasboyee 세계문화관광학회 2008 Conference Proceedings Vol.9 No.0

The identification and planning of tourism's actual and perceived economic impacts in rural areas as destination community in accordance with the sustainable tourism principles, has recently received significant attention. Thus, this study compares and analyzes the economic aspects of rural areas in accordance with the sustainable tourism principles before and after tourism development. The case study has been carried out on the rural areas of Dohezar district, Tonekabon Township, Iran. This area has eleven rural settlements and 216 households. Possessing beautiful natural landscapes, this area has been appealing to domestic tourists. The type of tourism in this area is nature-based tourism, reflected in the form of second homes. The methodology used in this study is descriptive-analytic, in which statistical test such as non-parametrical tests such as Wilcockson has been implemented with regard to the data type and the comparison before and after. The findings of this study indicate that the economic indicators of the villages under study have shown significant difference before and after the tourism development in accordance with the principles of sustainability and sustainable tourism; so much so that following the tourism development, positive economic impacts in these rural areas like the growth of employment in relation to the tourism sector and an increase of income as a result of tourism development were observed. But, in view of the fact that tourism development has occurred in the form of mass tourism, spontaneously and without any premeditated planning, it has brought about negative economic impacts such as increase in the price of goods and services, Economic seasonality, and excessive reliance of the rural areas upon the tourism sector, and unequal income distribution have been; something in conflict with the principles of sustainability and those of sustainable tourism.

MTB-DR-RIF 9G membrane: a platform for multiplex SNP detection of multidrug-resistant TB.

Sayyed, Danishmalik Rafiq,Nimse, Satish Balasaheb,Song, Keum-Soo,Sung, Nackmoon,Kim, Taisun Springer-Verlag 2015 Analytical and Bioanalytical Chemistry Vol.407 No.19

<P>The MTB-DR-RIF 9G membrane can detect by detecting multiple mutations in multiple codons. The MTB-DR-RIF 9G membrane possesses clinical applicability in point-of-care settings for the following reasons: (i) 100% similar results with that of the sequencing analysis for clinical samples, (ii) discrimination of the multiple mutations in multiple codons, (iii) a specific/non-specific hybridization ratio higher than 350:1, and (iv) the sensitivity was found to be 1-10 copies/test for detection and discrimination of the wild and mutant TB strains. Graphical abstract Schematic illustration of the effect of controller DNA on the hybridization of the immobilized probes (corresponding to the wild TB strain) with the PCR product of (a) wild TB strain and (b) mutant TB strain.</P>

A comprehensive evaluation of Mg-Ni based alloys radiation shielding features for nuclear protection applications

Sayyed M.I.,Mahmoud K.A.,Mohammed Faras Q.,Kaky Kawa M. 한국원자력학회 2024 Nuclear Engineering and Technology Vol.56 No.5

The current study aims to study the impacts of the substitution of magnesium with nickel concentrations on physical and γ-ray shielding capacity of magnesium alloys. The density of the magnesium alloys under study is varied from 3.677 g/cm3 to 5.652 g/cm3, with raising the nickel content from 26.7 wt% to 54.8 wt% and reducing the magnesium concentration from 72.6 wt% to 44.2 wt%, respectively. Additionally, the examination of the γ-ray shielding capacity using the Monte Carlo simulation code shows that the substitution of magnesium by nickel content in the magnesium alloys was associated with an enhancement in the γ-ray shielding capacity, where the linear attenuation coefficient for the studied alloys was enhanced by 53.22 %, 52.45 %, and 52.52 % at γ-ray energies of 0.662 MeV, 1.252 MeV, and 1.408 MeV, respectively, with raising the nickel concentration from 26.7 wt% to 54.8 wt%. Simultaneously, the half-value thickness for magnesium alloys was reduced from 2.47 cm to 1.62 cm (at gamma ray energy of 0.662 MeV), from 3.39 cm to 2.22 cm (at gamma ray energy of 1.252 MeV), and from 3.60 cm to 2.36 cm (at gamma ray energy of 1.408 MeV), raising the nickel concentration from 26.7 wt % to 54.8 wt%, respectively. The study shows that the substitution of magnesium for nickel greatly enhanced the radiation shielding capacity of the magnesium alloys.