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RISS 인기검색어
- 검색키워드
- 저자 : Majdi Mohammad (검색결과 4 건)
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Effects of the Real Estate Transaction Tax on Saudi Arabia's Economic Cycles
Mohammad Majdi HARIRI 한국유통과학회 2022 Asian Journal of Business Environment (AJBE) Vol.12 No.1
Purpose: The purpose of this paper is to determine the effects of the Real Estate Transactions Tax (RETT) on the economic cycles of Saudi Arabia. A secondary purpose is to determine the effects of RETT on the construction and real estate sectors of Saudi Arabia. Research design, data and methodology: The data used is retrieved from the General Authority of Statistics, Saudi Central Bank and the World Bank Open Data. Econometric models of multiple linear regression with dummy variables have been conducted to achieve the objectives and to quantitatively verify the hypotheses. Results: With the VAT exemption in real estate transactions and its substitution with RETT, a positive effect on the economy and the real estate sector has been observed. However, this tax reform has not produced any significant effects in the construction sector. Conclusions: The main conclusion of the present research is that the real estate market has a major influence on economic cycles. After the tax reform, a reduction in the contribution of taxes on real estate transactions to GDP was detected. For the construction sector, after the tax reform, it is estimated that there will be an insignificant reduction in the contribution of the real estate price index, and of the taxes on real estate transactions, to GDP.
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Effects of the Real Estate Transaction Tax on Saudi Arabia's Economic Cycles
HARIRI, Mohammad Majdi Korea Distribution Science Association 2022 Asian journal of business environment Vol.12 No.1
Purpose: The purpose of this paper is to determine the effects of the Real Estate Transactions Tax (RETT) on the economic cycles of Saudi Arabia. A secondary purpose is to determine the effects of RETT on the construction and real estate sectors of Saudi Arabia. Research design, data and methodology: The data used is retrieved from the General Authority of Statistics, Saudi Central Bank and the World Bank Open Data. Econometric models of multiple linear regression with dummy variables have been conducted to achieve the objectives and to quantitatively verify the hypotheses. Results: With the VAT exemption in real estate transactions and its substitution with RETT, a positive effect on the economy and the real estate sector has been observed. However, this tax reform has not produced any significant effects in the construction sector. Conclusions: The main conclusion of the present research is that the real estate market has a major influence on economic cycles. After the tax reform, a reduction in the contribution of taxes on real estate transactions to GDP was detected. For the construction sector, after the tax reform, it is estimated that there will be an insignificant reduction in the contribution of the real estate price index, and of the taxes on real estate transactions, to GDP.
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Association of Nutrient Patterns with Metabolic Syndrome and Its Components in Iranian Adults
( Zahra Akbarzade ),( Mohammad Reza Amini ),( Farhang Djafari ),( Habib Yarizadeh ),( Fatemeh Mohtashaminia ),( Maryam Majdi ),( Elham Bazshahi ),( Kurosh Djafarian ),( Cain C. T. Clark ),( Sakineh Sh 한국임상영양학회 2020 Clinical Nutrition Research Vol.9 No.4
We aimed to examine the association between nutrient patterns and metabolic syndrome (MetS) in Iranian adults. In a cross-sectional study of 850 self-certified healthy women and men aged 20-59 years old, dietary data were assessed using three 24-hour recall. Anthropometric measures were done and blood samples were collected to measure serum fasting serum glucose and lipid profile. The MetS was defined using the International Diabetes Federation. Major nutrient patterns were identified using principle competent analysis. In the first nutrient pattern, the individuals in the fifth quintile had a higher intake of vitamins B1, B2, B3, B5, B6, B12, zinc, iron, saturated fatty acids (SFAs), and protein. In the second nutrient pattern, individuals in the first quintile had lower consumption of zinc, SFAs, vitamin E, α-tocopherol, oleic acid, polyunsaturated fatty acids, β-carotene, linolenic acid, and monounsaturated fatty acids, compared to the fifth quintile. Furthermore, in the third nutrient pattern, the individuals in the fifth quintile had a higher intake of potassium, magnesium, phosphorous, calcium, protein, carbohydrate, vitamin C, and folate compared to other quintiles. We identified the second pattern had an indirect association with systolic and diastolic blood pressure, triglycerides, fasting blood sugar (p < 0.001 for all), and total cholesterol (p = 0.04) when it was controlled for body weight. Our findings showed that nutrient patterns may have an association with MetS components with mediating body weight.
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Thymol production in hairy root culture of Sahendian savory (Satureja sahendica Bornm)
Bahmani Helia,Maroufi Asad,Majdi Mohammad,Fakheri Barat Ali 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.2
Sahendian savory (Satureja sahendica Bornm) is a medicinal plant species which produces valuable secondary metabolites including thymol, p-cymene and γ-terpinene. In this study, optimization of hairy roots culture in S. sahendica using Agrobac�terium rhizogenes was efciently established. High frequency of genetic transformation was obtained using node and inter�node explants and three bacterial strains (ATCC 15834, A4, and LBA 9402). However, leaf explants showed no susceptibility to induce hairy roots with the A. rhizogenes strains. The node explants and LBA 9402 strain were the best combination for root induction. Infection time of 20 min caused greater transformation occurrence compared to 10 and 30 min, respectively. Node explants infected with LBA 9402 were found to produce more transformants upon co-cultivation for 2 days. The maxi�mum induction of hairy roots was obtained from bacterial infection at a density of OD600=0.8. Polymerase chain reaction by gene-specifc primers from rol B gene confrmed the positive transformation events. S. sahendica efciently provided and produced a large number of hairy roots which could be used for the production of secondary metabolites or other molecular and biotechnological applications. Production of thymol an important secondary metabolite of S. sahendica from hairy root cultures was confrmed by TLC and GC analysis. Elicitor-treated hairy root cultures with methyl jasmonate and ammonium nitrate produced more amount of thymol compared to untreated roots. These results demonstrate that secondary metabolite production such as thymol in hairy root culture of Sahendian savory could be used to increase low secondary metabolite production in this valuable medicinal plant.
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