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Wang, Yanting,Hodas, Nathan O.,Jung, Yousung,Marcus, R. A. Royal Society of Chemistry 2011 Physical chemistry chemical physics Vol.13 No.12
<P>The air/water interface was simulated and the mode amplitudes and their ratios of the effective nonlinear sum-frequency generation (SFG) susceptibilities (<I>A</I><SUB>eff</SUB>'s) were calculated for the <I>ssp</I>, <I>ppp</I>, and <I>sps</I> polarization combinations and compared with experiments. By designating “surface-sensitive” free OH bonds on the water surface, many aspects of the SFG measurements were calculated and compared with those inferred from experiment. We calculate an average tilt angle close to the SFG observed value of 35, an average surface density of free OH bonds close to the experimental value of about 2.8 × 10<SUP>18</SUP> m<SUP>−2</SUP>, computed ratios of <I>A</I><SUB>eff</SUB>'s that are very similar to those from the SFG experiment, and their absolute values that are in reasonable agreement with experiment. A one-parameter model was used to calculate these properties. The method utilizes results available from independent IR and Raman experiments to obtain some of the needed quantities, rather than calculating them <I>ab initio</I>. The present results provide microscopic information on water structure useful to applications such as in our recent theory of on-water heterogeneous catalysis.</P> <P>Graphic Abstract</P><P>Developed equations for SFG in a form that permits direct comparison of theory with quantities extracted from the experiments. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c0cp02745f'> </P>
Characterization of the Salmonella typhi Outer Membrane Protein C
( Toobak Hoda1 ),( Iraj Rasooli ),( Seyed Latif Mousavi Gargari ),( Abolfazl Jahangiri ),( Mohammadreza Jalali Nadoushan ),( Parviz Owlia ),( Shakiba Darvish Alipour Astaneh ) 한국미생물생명공학회(구 한국산업미생물학회) 2013 한국미생물·생명공학회지 Vol.41 No.1
Salmonella enterica serovar typhi, a Gram-negative food-borne pathogen, causes typhoid fever in humans. OmpC is an outer membrane porin of S. typhi expressed throughout the infection period. OmpC is potentially an attractive antigen for multivalent vaccines and diagnostic kit designs. In this study we combined in silico, in vitro and in vivo approaches to analyze various aspects of OmpC`s antigenic properties. The conserved region, in addition to secondary and tertiary structures, and linear B cell epitopes, were predicted. A number of results obtained from in silico analyses were validated by experimental studies. OmpC was amplified, cloned and then expressed, with the recombinant protein then being purified. BALB/c mice were immunized by purified denatured OmpC. The titer of antibody was raised. Results of challenges with the pathogen revealed that the immunity is non-protective. Most of the theoretical and experimental results were in consensus. Introduced linear B cell epitopes can be employed for the design of diagnostic kits based on antigen-antibody interactions.
The Effect of Financial Liberalization on Economic Growth: The Case of Egypt and Saudi Arabia
Hoda MANSOUR,Soliman HASSAN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.11
Theoretically, economic growth necessitates financial liberalization. Thus, the current research examines the effect of financial liberalization on economic growth in emerging nations, with a particular focus on Egypt and Saudi Arabia. To determine this effect, the study employs a model that uses Gross Domestic Product growth as the dependent variable and the following macroeconomic variables as financial liberalization indices: Broad money as a percentage of GDP, Domestic bank credit to the private sector as a percentage of GDP, Monetary sector credit to the private sector as a percentage of GDP, Net inflows of foreign direct investment as a percentage of GDP. All data is annual data of Egypt and the Kingdom of Saudi Arabia for the period 1970–2018 obtained from the World Bank open data website. The empirical investigation employs the Autoregressive Distributed Lag (ARDL) approach. The findings indicate that, after more than three decades of implementation, both countries’ financial and external liberalization policies do not have a favorable effect on their economies’ growth rates. Additionally, this study has led us to conclude that any financial liberalization policy in both countries must be preceded by the strengthening of these countries’ financial development and institutional frameworks, as well as the achievement of macroeconomic stability.
Investigating the Effectiveness of an Integrated Approach to Teaching Literature in an EFL Context
( Hoda Divsar ),( Abdorreza Tahriri ) 범태평양응용언어학회 2009 범태평양응용언어학회지 Vol.13 No.2
In the present paper, three models for teaching literature including language-based, literature as content or culture, and literature as personal growth or enrichment were evaluated. Based on these models, an integrated model was suggested. An experimental study was carried out in order to examine the effectiveness of the suggested approach compared to a conventional and instructor-led one. One-hundred and twenty BA students majoring in English Literature took part in a one-semester experiment. For the experimental group, the integrated approach was utilized whereas the method used for the control group was based on content-cultural model according to which the course instructor provided all the necessary information without focusing on the linguistic or stylistic considerations. The post-test consisted of three parts: linguistic, interpretive and cultural sections. The results of the study confirmed the plausibility of the use of the suggested eclectic approach to teaching literature. Several pedagogical implications were drawn.
Hoda M. Fathy,Mohamed I. Aboushoer,Azza Baraka,Maged S. Abdel-Kader,Abdallah A. Omar 한국생약학회 2009 Natural Product Sciences Vol.15 No.1
Phytochemical investigation of the roots of Echiochilon fruticosum resulted in the isolation of two naphthoquinone derivatives. Compound 1 was identified as anhydroalkanin while compound 2 was identified as a new derivative 5-hydroxy 8-methoxy 2-(4-methylpent-1,3-dienyl) naphthalene-1,4-dione named as echiochiloquinone. In addition, caffeic acid 3, caffeic acid methyl ester 4 were isolated. The structures were determined by physical, chemical and spectral methods. The anti-inflammatory activity of the root extracts and compound 2 was evaluated utilizing both cotton pellet-induced and carragenin-induced rat paw edema. The ulcerogenic effect was also studied.
( Hoda Shafaghat ),황유진,류수민,정재훈,박영권 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
리그닌 열분해 과정에서 리그닌의 구조적 특성에 의해 char의 melting 및 agglomeration에 의해 원활한 열분해 반응이 힘들어 연속적 반응 공정에 적용하기 어려움이 있다. 리그닌 열분해의 문제점을 해결하기 위해 리그닌에 다양한 첨가제를 추가하여 열분해 공정에 쓰는 등 다양한 연구들이 진행되고 있다. 한편, 조개 껍질류는 calcium을 다량 함유하고 있는 폐기물로 높은 온도에서 소성을 통해 calcium oxide로 전환 된다. 따라서 리그닌의 연속식 열분해 공정에서 조개 껍질류를 활용하면 char agglomeration 방지에 효과적일 것으로 기대된다. 이에 본 연구에서는 폐꼬막, 폐홍합의 껍질을 소성하여 리그닌과 함께 열분해 반응을 수행 하고 반응 후 생성물인 가스와 바이오 오일을 GC/TCD, FID 및 GC/MS로 분석하여 효과를 확인하였다. <sup>**</sup> 이 성과는 2017년도 정부(과학기술통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구임(No. 2017M1A2A2087674).
ARREST OF SHIPS : GATEWAY TO A SUCCESSFUL CLAIM
( Hoda Asgarian ) 고려대학교 법학연구원 2022 The Asian Business Lawyer Vol.29 No.-
When claiming against someone, the main concern is whether the claim can be secured and paid. It is the same in the field of the marine industry. In the marine industry, it is important to secure the claimant’s claims. One way to fulfill this is to arrest the ship, which enables the claimants to successfully reap the benefit of a claim. When an arrest warrant is issued, the vessel is detained to secure the maritime claim. There is always the question of jurisdiction and some countries are more favorable to the arrest than the others. Besides, as the ship is used for commercial usage, the unlawful detention may cause substantial financial loss to the owner; hence the claimant must be aware of the drawbacks, as he will be the one responsible for the impairment. Moreover, if the claimant agrees to the ship's release (either the shipowner secures the claim in other ways or agrees upon other terms) or the court decides so, the vessel remains under arrest. There are many issues raised by the arrest of the ship, and this essay will review the salient ones.
Hoda Ibrahim,Naglaa Ameen 한국전산응용수학회 2012 Journal of applied mathematics & informatics Vol.30 No.1
In this paper, we solve the three-dimensional biharmonic equation with Dirichlet boundary conditions of second kind using the full multigrid (FMG) algorithm. We derive a finite difference approximations for the biharmonic equation on a 18 point compact stencil. The unknown solution and its second derivatives are carried as unknowns at grid points. In the multigrid methods, we use a fourth order interpolation to producing a new intermediate unknown functions values on a finer grid, and the full weighting restriction operators to calculating the residuals at coarse grid points. A set of test problems gives excellent results.