16 research outputs found
Integrating Artificial Intelligence and Social Media for English as a Foreign Language (EFL) Learning: A Study on Meta-AI’s Influence on Reading Comprehension
No full textThis study explores the integration of Artificial Intelligence (AI) and social media, particularly Meta-AI-enhanced WhatsApp, in enhancing reading comprehension among English as a Foreign Language (EFL) learners. Despite the growing use of AI and social media in education, there is a notable lack of empirical research examining their combined effect on language learning. To address this gap, a systematic review was conducted following the PRISMA 2020 framework. A total of 850 studies were initially identified from databases such as PubMed, Scopus, Web of Science, and Google Scholar. After applying strict inclusion and exclusion criteria, 140 studies were included in the review, with 20 selected for in-depth analysis. The findings reveal that Meta-AI-supported platforms provide personalized learning paths, adaptive feedback, and enhanced engagement, contributing significantly to the improvement of reading skills. However, challenges such as ethical concerns, reduced human interaction, and technology accessibility were also noted. This study offers valuable insights for educators and policymakers on effectively integrating AI and social media tools into EFL instruction, suggesting that technology-enhanced environments can surpass traditional methods in promoting reading comprehension and learner motivation
Toxicity of Phosphine and Chloroform alone and as Mixture to Tribolium Castaneum: Effect on Oxidative Balance.
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
Characterization of a β-D-mannosidase from a marine gastropod, Aplysia kurodai
No full textA β-D-mannosidase (EC 3.2.1.25) with a molecular mass of approximately 100 kDa was purified from the digestive fluid of a marine gastropod Aplysia kurodai by ammonium sulfate fractionation followed by column chromatographies on TOYOPEARL Butyl-650 M, TOYOPEARL DEAE-650 M, and Superdex 200 10/300 GL. This enzyme, named AkMnsd in the present study, showed optimal activities at pH 4.5 and 40℃ and was stable at the acidic pH range from 2.0 to 6.7 and the temperature below 38℃. The Km and Vmax values for AkMnsd determined at pH 6.0 and 30℃ with p-nitrophenyl β-D-mannopyranoside were 0.10 mM and 3.75 μmol/min/mg, respectively. AkMnsd degraded various polymer mannans as well as mannooligosaccharides liberating mannose as a major degradation product. Linear mannan from green alga Codium fragile was completely depolymerized by AkMnsd in the presence of AkMan, an endolytic β-mannanase, which we previously isolated from the same animal (Zahura et al., Comp. Biochem. Physiol. B 157, 137-148 (2010)). A cDNA encoding AkMnsd was amplified from the Aplysia hepatopancreas cDNA by the PCR using degenerated primers designed on the basis of N-terminal and internal amino-acid sequences of AkMnsd. The cloned AkMnsd cDNA consisted of 2985 bp and encoded an amino-acid sequence of 931 residues with the calculated molecular mass of 101970 Da. The deduced sequence of AkMnsd showed 20-43% amino-acid identity to those of glycoside-hydrolase-family 2 (GHF2) β-mannosidases. The catalytically important amino-acid residues determined in GHF2 enzymes were completely conserved in AkMnsd. Thus, AkMnsd is regarded as a new member of GHF2 mannosidase from marine gastropod
Identities involving 3-variable Hermite polynomials arising from umbral method
No full textIn this paper, we employ an umbral method to reformulate the 3-variable Hermite polynomials and introduce the 4-parameter 3-variable Hermite polynomials. We also obtain some new properties for these polynomials. Moreover, some special cases are discussed and some concluding remarks are also given. © 2020, The Author(s)
An endo-β-1,4-mannanase, AkMan, from the common sea hare Aplysia kurodai
No full textA mannan-degrading enzyme was isolated from the digestive fluid of the common sea hare Aplysia kurodai by ammonium sulfate fractionation followed by conventional column chromatography. The purified enzyme, named AkMan in the present paper, showed a single band with an approximate molecular mass of 40,000 Da on SDS-PAGE and preferably degraded a linear β-1,4-mannan from green algae Codium fragile producing triand disaccharides. The optimal temperature of AkMan was 55 °C at pH 7.0 and temperature that caused 50% inactivation of AkMan during a 20-min incubation was 52 °C. AkMan retained high activity at pH 4.0–7.5 and was not inactivated in such acidic pH range by the incubation at 40 °C for 20 min. AkMan could degrade glucomannan from konjak root and galactomannan (tara gum and guar gum) as well as the linear β-1,4- mannan, while not carboxymethyl cellulose, agarose, dextran and xylan. These results indicate that AkMan is a typical endo-β-1,4-mannanase (EC 3.2.1.78) splitting internal β-1,4-mannosyl linkages of mannan. The Nterminal and internal amino-acid sequences of AkMan shared ∼55% amino-acid identity to the corresponding sequences of an abalone β-1,4-mannanase, HdMan, which belongs to glycosyl hydrolase family 5 (GHF5). Thus, AkMan was also regarded as a member of GHF5 β-1,4-mannanases
cDNA cloning and bacterial expression of an endo-β-1,4-mannanase, AkMan, from Aplysia kurodai
No full textPreviously we isolated an endo-β-1,4-mannanase (EC 3.2.1.78), AkMan, from the digestive fluid of a common sea hare Aplysia kurodai and demonstrated that this enzyme had a broad pH optimum spanning 4.0 to 7.5 and an appreciably high heat stability in this pH range (Zahura et al., Comp. Biochem. Physiol., B157, 137-148 (2010)). In the present study, we cloned the cDNA encoding AkMan and constructed a bacterial expression system for this enzyme to enrich information about the primary structure and the characteristic properties of this enzyme. cDNA fragments encoding AkMan were amplified by PCR followed by 5'- and 3'-RACE PCRs from the A. kurodai hepatopancreas cDNA using degenerated primers designed on the basis of partial amino-acid sequences of AkMan. The cDNA including entire translational region of AkMan consisted of 1,392 bp and encoded 369 amino-acid residues. The N-terminal region of 17 residues of the deduced sequence except for the initiation Met was regarded as the signal peptide of AkMan and the mature enzyme region was considered to comprise 351 residues with a calculated molecular mass of 39961.96 Da. Comparison of the primary structure of AkMan with other β-1,4-mannanases indicated that AkMan belongs to the subfamily 10 of glycosyl-hydrolase-family-5 (GHF5). Phylogenetic analysis for the GHF5 β-1,4-mannanases indicated that AkMan together with other molluscan β-1,4-mannanases formed an independent clade of the subfamily 10 in the phylogenetic tree. The recombinant AkMan (recAkMan) was expressed with an Escherichia coli BL21(DE3)-pCold1 expression system as an N-terminal hexahistidine-tagged protein and purified by Ni-NTA affinity chromatography. The recAkMan showed the broad pH optimum in acidic pH range as did native AkMan; however, heat stability of recAkMan was considerably lower than that of native enzyme. This may indicate that the stability of AkMan is derived from an appropriate folding and/or some posttranslational modifications in Aplysia cells
Effects of seasonal weathering on dewatering and strength of an oil sands tailings deposit
No full textConsiderable research has been conducted over the past decade by oil sands mining companies to improve the dewatering and strength properties of fluid fine tailings deposits in an effort to meet the regulatory and closure requirements. Commercially employed dewatering treatment technologies (inline flocculation, thickening, and centrifugation) may not be sufficient to develop the strength for the creation of trafficable landscape without the use of soft soil capping technologies. These treated tailings are continuously deposited creating soft and saturated deep deposits. Seasonal weathering may be an additional promising technology to further dewater the treated tailings and promote the development of shear strength at the surface. The effects of seasonal weathering on dewatering and strength were investigated in this paper by performing multiple cycles of freeze-thaw and alternate drying-wetting cycles on two types of treated tailings deposit. The results indicate that multiple cycles of seasonal weathering significantly increased the dewatering and strength properties. However, different parameters such as freezing gradient, number of seasonal cycles, and pore water chemistry play an influential role in changing the magnitude of the strength. The results also suggest that a minimum threshold strength value is required where the effects of rainfall rewetting had a minimal impact on strength reduction (the strength corresponding to the moisture content approaching the plastic limit).The presentation of the authors' names and (or) special characters in the title of the pdf file of the accepted manuscript may differ slightly from what is displayed on the item page. The information in the pdf file of the accepted manuscript reflects the original submission by the author
The „Constitution of Medina“
No full textČlanek prinaša uvod, prevod in komentar k dokumentu, ki je postal znan kot „Medinska konstitucija“. Ta dokument je poleg Korana najzgodnejši avtentični vir o življenju prve muslimanske skupnosti, saj je nastal kmalu po Mohamedovem prihodu v Medino. V članku je najprej podan zgodovinski uvod v kontekst, v katerem je dokument nastal. Avtor članka z branjem islamskih historiografskih virov in poročil o najdbah inskripicij na arabskem polotoku orisuje osnovne značilnosti medinskih plemen ter njihove medsebojne odnose pred prihodom Mohameda. Drugo poglavje vsebuje prvi slovenski prevod „Medinske konstitucije“, ki mu je vzporedno dodan tudi vokaliziran arabski izvirnik iz Sīre Ibn Hišāma. V komentarju avtor našteva nekatere najbolj pereče izzive, povezane z besedilom „Medinske konstitucije“. Avtor zagovarja tezo, da so ummo v času, ko je nastala „Medinska konstitucija“, sestavljali verniki/muslimani, judje in politeisti. Čeprav so bili politeisti in judje tudi člani umme, jih „Medinska konstitucija“ nikjer ne imenuje ‚verniki‘ – kakor so to za jude trdili nekateri sodobni raziskovalci zgodovine zgodnjega islama.This paper provides an introduction, translation, and commentary of the document most widely known as the “Constitution of Medina.” This document is, besides the Qurʾān, the earliest authentic written source about the life of the Muslim community after Muḥammad’s arrival in Medina. In the first chapter, the paper introduces the historical context in which the document emerged. Through a critical reading of Islamic historiographical sources and inscriptions from the Ḥiǧāz area, the author sketches the essential characteristics of the Medinese tribes on the eve of Muḥammad’s arrival to Medina. The second chapter of the paper contains the first Slovenian translation of the “Constitution of Medina,” which is accompanied by the Arabic original from Sīrat Rasūl Allāh of Ibn Hišām. In the commentary, the author discusses some of the most debated issued of the Constitution of Medina. The author argues that when the “Constitution of Medina” was written, the umma consisted of the Believers/Muslims, Jews, and idolators. Although the Jews and the idolaters were part of the umma, the “Constitution of Medina” never calls them “Believers.
Correction to: Predicting the effectiveness of protected areas of Natura 2000 under climate change
No full textIn the original publication of this article (Nila & Hossain, 2019), co-authors ‘Carl Beierkuhnlein, Anja Jaeschke and Samuel Hoffmann’ need to be added to the author list
Contribución a los estudios aquitano-vascos
No full textThe author analyses the Basque-Aquitainian linguistic continuity theory in the light of information concerning the Armenian language and other languages which have disappeared from Near Asia, particularly Hurrian and Uratian. The study bases itself on the existence of a great many coincidences between Basque and Armenian, which are partially supported by entries in the Aquitainian onomasticon. Three types of Aquitanian-Basque-Armenian similarities are revealed in the study: phonetic matches, onomastic bases and grammatical forms. Among the first, the absence of the R- sound in an initial position, the rejection of consonant group accumulation, the lack of the f sound, the difficulty had with the pronunciation of mute + liquid (tl, pr, kl, etc.) consonant structures and the rarity of the –a in an end position are worth highlighting. Almost thirty onomastic root coincidences are given, such as: Aquit. Andere, Andos – Basq. andia “big” – Arm. andranik “first born, eldest”; Aquit. Erdenivs – Basq. erdi “half” – Arm. herdz-el “to cut, to dice”; Aquit. Ombecco – Basq. umme “child, offspring” – Arm. hambak “child”; Aquit. Sahar – Basq. zar, zahar “old” – Arm. tser “old”, etc. A number of grammatical matches are also analysed.El autor analiza la teoría de continuidad lingüística aquitano-vasca bajo la luz de los datos de la lengua armenia y otros idiomas desaparecidos del Asia Anterior, sobre todo, el hurrita y el urartuo. El estudio se basa en la existencia de muchísimas coincidencias entre el euskera y el armenio, que parcialmente están atestiguadas en la onomástica de Aquitania. En el trabajo se revelan tres clases de semejanzas aquitano-vasco-armenias: correspondencias fonéticas, bases onomásticas y formantes gramaticales. Entre las primeras destaca la ausencia del sonido R- en posición inicial, rechazo a la acumulación de grupos de consonantes, carencia del sonido f, la dificultad de pronunciar las estructuras consonánticas muta + liquida (tl, pr, kl, etc.), rareza de la vocal -a en posición final, etc. En raíces onomásticas se presentan casi tres decenas de coincidencias, tales como: aquit. Andere, Andos – vasc. andia “gran” – arm. andranik “primogénito, mayor”; aquit. Erdenivs – vasc. erdi “medio, mitad” – arm. herdz-el “cortar, picar”; aquit. Ombecco – vasc. umme “niño, cría” – arm. hambak “niño”; aquit. Sahar – vasc. zar, zahar “viejo” – arm. tser “viejo”, etc. Se analizan también algunas coincidencias gramaticales.Egileak eusko-akitaniar hizkuntza-jarraitasuna aztertzen du armenieraren nahiz Asia Aurrekoko beste hizkuntza desagertu batzuen (hurrita eta urartuo, batez ere) datuak kontuan hartuz. Ikerketa euskara eta armenieraren arteko berdintasunetan oinarritzen da, Akitaniako onomastika berdintasun horien lekuko, alde batez, delarik. Lanak hiru berdintasun-mota biltzen ditu euskara, akitaniera eta armenieraren artean: korrespondentzia fonetikoak, oinarri onomastikoak eta formante gramatikalak. Korrespondentzia fonetikoei dagokienez, ondokoak dira aipatzekoak: r- soinua ez izatea hitzaren hasieran, kontsonante-taldeak ez pilatzeko joera, f soinua ez izatea, mutua+urkaria (tl, pr,kl...) kontsonante-egiturak ahoskatzeko zailtasunak, -a bokala gutxitan egotea hitzaren amaieran... Oinarri onomastikoei dagokienez, aitzitik, ia hiru dozena berdintasun aurkezten dira: akit. Andere, Andos / eusk. Andia / arm. Andranik (lehen semea); aki. Erdenivs / eusk. Erdi / arm. Herdz- el (moztu); akt. Ombecco / eusk. Umme / arm. Hambak (haurra); akt. Sahar / eusk. Zar, Zahar / arm. Tser (zaharra). Hainbat berdintasun gramatikalak ere aztertzen dira.
 
