In vivo Effects of Di-n-butyl Phthalate and Di-2-ehthyhexyl Phthalate on the Nonspecific Defense Mechanism of the Bagrid Catfish, Pseudobagrus fulvidraco

Fatima,강주찬,금유화,지정훈 한국수산과학회 2006 Fisheries and Aquatic Sciences Vol.9 No.1

The Nexus between Capital Structure and Firm Value by Profitability Moderation: Evidence from Saudi Arabia

Nadeem FATIMA(Nadeem FATIMA ),Abdul Rahman SHAIK(Abdul Rahman SHAIK ) 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.9

The current study examines the nexus between the capital structure (debt-equity) and firm value (Tobin’s Q) by including profitability (alternatively Return on Assets (ROA) and Return on Equity (ROE)) as a moderator in the companies of Saudi Arabia. The study sample consists of 102 companies listed on Tadawul (the Saudi Arabian stock exchange) from different sectors of Saudi Arabia during the period 2013 to 2020. The study estimates pooled regression, panel regression with fixed and random effects, and dynamic panel regression models to report the results. The study results report that there is a negative and significant association between capital structure and firm value in model 1, while in models 2 and 3 there is a more negative and significant impact between the two study variables compared to model 1 after the inclusion of interaction variable, i.e. profitability in terms of ROA and ROE. The comparative result shows that the companies of Saudi Arabia hold more debt in their capital structure mix, hence evidencing a decrease in the firm value. The reported results also show that models 2 and 3 are better in explaining the impact of capital structure on firm value due to the interaction of profitability compared to model 1.

Molecular Approach to Allergy Diagnosis and Therapy

Fatima Ferreira,Martin Wolf,Michael Wallner 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.4

Presently, allergy diagnosis and therapy procedures are undergoing a transition phase in which allergen extracts are being step-by-step replaced by molecule-based products. The new developments will allow clinicians to obtain detailed informationon sensitization patterns, more accurate interpretation of allergic symptoms,and thus improved patients’ management. In this respect, recombinant technology has been applied to develop this new generation of molecule-based allergyproducts. The use of recombinant allergens allows full validation of identity, quantity, homogeneity, structure, aggregation, solubility, stability, IgE-binding and the biologic potency of the products. In contrast, such parameters are extremely difficult to assay and standardize for extract-based products. In addition to the possibilityof bulk production of wild type molecules for diagnostic purposes, recombinanttechnology opened the possibility of developing safer and more efficacious products for allergy therapy. A number of molecule-based hypoallergenic preparationshave already been successfully evaluated in clinical trials, bringing forward the next generation of allergy vaccines. In this contribution, we review the latest developments in allergen characterization, molecule-based allergy diagnosis, and the application of recombinant allergens in therapeutic setups. A comprehensive overview of clinical trials using recombinant allergens as well as synthetic peptidesis presented.

Antimicrobial activity and toxicity of Quisqualis indica

Fatima N Jahan,Mohammad S Rahman,Mahboob Hossain,Mohammad A Rashid 경희대학교 융합한의과학연구소 2008 Oriental Pharmacy and Experimental Medicine Vol.8 No.1

The plant Quisqualis indica (Compositae) has ehnopharmcological reputation of being used as a healing agent in Bangladesh. In this study, preliminary screenings were conducted to look at the antimicrobial susceptibility and cytotoxicity of the plant extract. The extractives of the plant were subjected to screening for inhibition of microbial growth by the disc diffusion method. The zones of inhibition demonstrated by the n-hexane, carbon tetrachloride, chloroform and aqueous soluble partitionates of the methanolic extract ranged from 8 - 15 mm, 8 - 18 mm, 12 - 20 mm and 10 - 16 mm, respectively at a concentration of 400 μg/disc. All the extractives were also subjected to brine shrimp lethality bioassay for primary cytotoxicity evaluation. Here, the carbon tetrachloride soluble materials demonstrated the highest cytotoxicity with LC50 of 0.826 μg/ml, while n-hexane, chloroform and aqueous soluble partitionates of the methanolic extract revealed the LC50 of 1.254, 3.866 and 5.366 μg/ml, respectively. This is the first report of the antimicrobial activity and cytotoxicity Q. indica. The plant Quisqualis indica (Compositae) has ehnopharmcological reputation of being used as a healing agent in Bangladesh. In this study, preliminary screenings were conducted to look at the antimicrobial susceptibility and cytotoxicity of the plant extract. The extractives of the plant were subjected to screening for inhibition of microbial growth by the disc diffusion method. The zones of inhibition demonstrated by the n-hexane, carbon tetrachloride, chloroform and aqueous soluble partitionates of the methanolic extract ranged from 8 - 15 mm, 8 - 18 mm, 12 - 20 mm and 10 - 16 mm, respectively at a concentration of 400 μg/disc. All the extractives were also subjected to brine shrimp lethality bioassay for primary cytotoxicity evaluation. Here, the carbon tetrachloride soluble materials demonstrated the highest cytotoxicity with LC50 of 0.826 μg/ml, while n-hexane, chloroform and aqueous soluble partitionates of the methanolic extract revealed the LC50 of 1.254, 3.866 and 5.366 μg/ml, respectively. This is the first report of the antimicrobial activity and cytotoxicity Q. indica.

Heterologous Expression of Laccase1 Gene from the Chestnut Blight Fungus Cryphonectria parasitica in Saccharomyces cerevisiae

Fatima HERNANDEZ,Seung-Moon PARK,Beom-Tae KIM,Tae-Geum KIM,Dae-Hyuk KIM 한국생물공학회 2023 한국생물공학회 학술대회 Vol.2023 No.4

Conception and Manufacturing of a Planar Inductance on NiFe Substrate

Fatima Zohra Medjaoui,Azzedine Hamid,Yacine Guettaf,Pierre Spiteri,Vincent Bley 한국전기전자재료학회 2019 Transactions on Electrical and Electronic Material Vol.20 No.2

The present paper presents the study, realization and characterization of a micro-coil sandwiched using a relatively thick layer of magnetic material. The integration of this micro-coil with as a starting point a set of specifi cations, requires the following steps: Identifi cation and validation of geometric parameters for the calculation of electrical parameters. Losses dissipated as heat in these electronic systems are becoming a major concern for designers. This prompted to take into account the thermal design. The results obtained have allowed to realize a micro-coil micro square planar coil sandwiched shaped between two magnetic materials. Several carried measures focused on the inductance and resistance which are related to the frequency f , the module and phase of the impedance, and the gap g . The operation of these data is used to trace the evolution of theinductance value L s , the quality factor Q and the resistor R s as a function of frequency.

ASYMPTOTICS OF ORTHOGONAL POLYNOMIALS CORRESPONDING TO POLYNOMIAL SZEGŐ MEASURE WITH AN INFINITE DISCRETE PART

Fatima Zohra Benghia,Youcef Belabbaci 충청수학회 2021 충청수학회지 Vol.34 No.3

The asymptotics behavior orthogonal polynomials have been in the spotlight since the result of G. Szegő in 1921. In this paper we study the pointwise asymptotics inside the unit disk for orthogonal polynomials with respect to a polynomial Szegő measure with an infinite masses points.

Synthesis and Characterization of Zn(1-x)NixAl2O4 Spinels as a New Heterogeneous Catalyst of Biginelli’s Reaction

Fatima-Zohra Akika,Nadjib Kihal,Tahir Habila,Ivalina Avramova,Smail Khelili,Bernard Pirotte,Sçefik Suzer 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.5

Zn(1-x)NixAl2O4 (x = 0.0-1.0) spinels were prepared at 800 °C by co-precipitation method and characterized by infrared spectroscopy, X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The specific surface area was determined by BET. SEM image showed nano sized spherical particles. XPS confirmed the valence states of the metals, showing moderate Lewis character for the surface of materials. The powders were successfully used as new heterogeneous catalysts of Biginelli’s reaction, a one-pot threecomponent reaction, leading to some dihydropyrimidinones (DHPMs). These new catalysts that produced good yields of DHPMs, were easily recovered by simple filtration and subsequently reused with persistent activity, and they are non-toxic and environmentally friendly. The optimum amount of catalyst is 20% by weight of benzaldehyde derivatives, while the doping amount has been found optimal for x = 0.1.

Effect of Light-Ions Implantation on Resistivity of GaN Thin Film

Fatima Tuz Johra,정우광 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.4

GaN is a very well-known semiconductor because of its properties, making it useful in different types of electronic devices. In electronics applications, the resistivity of the starting materials is very important. In this study, the resistivity of GaN thin films has been investigated upon its modification with ion implantation using both n-type and p-type GaN. Ionic implantation was performed with H, He, and Ar ions. The ion beam energy (60 and 120 keV) and flux (1.0 × 1012 and 1.0 × 1015 cm−2·s−1), as well as post-implantation annealing temperature (100°C - 500°C), were varied to analyze their influence on GaN resistivity. It was observed that the resistivity changed in all samples with the change in ion beam flux and energy. At room temperature, the resistivity of ntype GaN increased from 1.9 × 10−2 to 17.7 × 10−2 Ω·cm. Among all modified samples, He-ion-implanted samples show higher resistivity. During the post-annealing treatment, n-type GaN implanted with He showed more consistency compared to p-type GaN. On the contrary, p-type showed some anomalous character upon postannealing.

Plurals as an example of teaching the basics of Arabic syntax for beginners

Fatima Omary 한국아랍어아랍문학회 2016 아랍어와 아랍문학 Vol.20 No.2

There is no doubt that syntax is the foundation, ingress, route as well as the measure of the Arabic Language. Indeed, it is essential to present syntax to Arab and non-Arab learners of Arabic. An argument persists however as to what syntax do we present and how do we present it, and at what point in time do we do so? A further argument ensues on what facets of syntax do present to our students before other. This research seeks to provide a functional vision for teaching grammatical material; material that is necessary for beginner learners, and attempts to the following three questions: 1. What facets of syntax do we present? 2. How do we present the syntactic material? 3. When do we present the syntactic material? Our argument is based on the premise that language is a gift that is based on a set of principles, standards, and rules through which native speakers learn the language without necessarily being aware of. Also, the fact that the syntactic material which has to be taught to non- native Arabic speakers is the general standards that helps such learners to avoid making mistakes and necessarily the special standards adopted by grammarians and scholars of Arabic. Essentially, what we are saying is that learners’ primary concern is with the function rather than the concepts or the definition. This study is the result of an extensive in depth research in the original syntactical resources and what ancient scholars had produced in this field. This, in addition to new Arabic and foreign resources on this subject. All of that is supported by addressing the current state of affairs in the field of teaching Arabic syntax for non-native speakers using several specialized curricula, and through the work of beginners of non- native Arabic speakers. The study produces an example of the functional vision that it adopts through a new vision to teach the three types of plural in Arabic for beginners. ممّا لا شكّ فيه أنّ النّحو أُسُّ العربيّة وبابها وسبيلها وقياسها، وأنّه لابد من تقديم المادّة النّحويّة للطلبة الذين يتعلّمون العربيّة من أبنائها ومن غيرهم. إلا أنّ الخلاف حول الذي نُقدّمه من أبواب النّحو، وكيفية تقديمه، واختيار الوقت الملائم، في ضوء تقديم تعليم بعض أبواب النّحو على أبوابه الأخرى يظلُّ مجالاً للبحث والنّقاش.