Статті в журналах з теми "Otac"
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1
Si, Peidong, Gang Wang, Wenqing Wu, Sarfaraz Hussain, Ling Guo, Wei Wu, Qingli Yang, and Fuguo Xing. "SakA Regulates Morphological Development, Ochratoxin A Biosynthesis and Pathogenicity of Aspergillus westerdijkiae and the Response to Different Environmental Stresses." Toxins 15, no. 4 (April 17, 2023): 292. http://dx.doi.org/10.3390/toxins15040292.
Повний текст джерелаАнотація:
Ochratoxin A (OTA), as a common mycotoxin, has seriously harmful effects on agricultural products, livestock and humans. There are reports on the regulation of SakA in the MAPK pathway, which regulates the production of mycotoxins. However, the role of SakA in the regulation of Aspergillus westerdijkiae and OTA production is not clear. In this study, a SakA deletion mutant (ΔAwSakA) was constructed. The effects of different concentrations of D-sorbitol, NaCl, Congo red and H2O2 on the mycelia growth, conidia production and biosynthesis of OTA were investigated in A. westerdijkiae WT and ΔAwSakA. The results showed that 100 g/L NaCl and 3.6 M D-sorbitol significantly inhibited mycelium growth and that a concentration of 0.1% Congo red was sufficient to inhibit the mycelium growth. A reduction in mycelium development was observed in ΔAwSakA, especially in high concentrations of osmotic stress. A lack of AwSakA dramatically reduced OTA production by downregulating the expression of the biosynthetic genes otaA, otaY, otaB and otaD. However, otaC and the transcription factor otaR1 were slightly upregulated by 80 g/L NaCl and 2.4 M D-sorbitol, whereas they were downregulated by 0.1% Congo red and 2 mM H2O2. Furthermore, ΔAwSakA showed degenerative infection ability toward pears and grapes. These results suggest that AwSakA is involved in the regulation of fungal growth, OTA biosynthesis and the pathogenicity of A. westerdijkiae and could be influenced by specific environmental stresses.
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Aguirre-Ortega, Emily, Mónica Henao-López, Jolián A. Vargas-Alzate, Katherin Castro Rios, and Claudia N. Montoya-Estrada. "Identification of Aspergillus westerdijkiae and its potential risk of Ochratoxin A synthesis in Cannabis inflorescences." Scientia Agropecuaria 15, no. 1 (February 5, 2024): 45–54. http://dx.doi.org/10.17268/sci.agropecu.2024.004.
Повний текст джерелаАнотація:
Nowadays, fungal contamination of medical Cannabis inflorescences during postharvest has become an increasingly frequent and worrisome problem for consumers and the industry in general. This is because some of these microorganisms can produce secondary metabolites, such as mycotoxins, which can be toxic to humans. To assess the risk posed by fungal contamination and evaluate the potential for fungal isolates to produce mycotoxins, samples of medicinal Cannabis were tested for the presence of mycotoxin-forming fungi. Inflorescences were isolated on PDA agar at 23 ± 2 °C for ten days, and the microorganisms were identified. The strain with morphological characteristics compatible with the genus Aspergillus spp. was selected as the fungus with the highest risk of forming hazardous mycotoxins. This isolate was characterized conventionally and by molecular identification using primers for the internal transcribed spacer region (ITS) of ribosomal DNA and different coding genes and was identified as Aspergillus westerdijkiae. To determine mycotoxin formation, the genome of A. westerdijkiae was sequenced using the Illumina Novaseq platform in South Korea. The antiSMASH tool was used to search for gene clusters associated with producing secondary metabolites, and genes related to toxins were manually curated. Regions where the cluster of genes directly involved in OTA biosynthesis (otaA, otaB, otaC, otaR and otaD) were found, suggesting a potential risk of synthesis of this toxin.
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Lv, Shiyi, Qiaona Liu, Sanbao Dong, Jinling Li, Jie Zhang, Manxue Wang, and Gang Chen. "Preparation and the foaming activity of hydroxymethyl octadecyltrimethyl ammonium chloride." Tenside Surfactants Detergents 60, no. 2 (March 1, 2023): 182–89. http://dx.doi.org/10.1515/tsd-2020-2259.
Повний текст джерелаАнотація:
Abstract In this work, hydroxymethyl octadecyltrimethyl ammonium chloride (HM-OTAC) was obtained from the reaction between octadecyltrimethyl ammonium chloride (OTAC) and formaldehyde in different molar ratios. The effects of the reaction conditions (different molar ratios) on the properties of the product (surface tension, foaming, high temperature resistance, methanol resistance and salt resistance) were investigated. The results showed that the HM-OTAC produced under different molar ratios could lower the surface tension of water solutions more than the surfactant OTAC. The HM-OTAC (1:2) reduced the surface tension to 28.29 mN m−1. The HM-OTAC produced under other molar ratios gave higher interfacial tensions than HM-OTAC (1:2). With increasing surfactant concentration, the foam volume first increased and then gradually decreased. At a concentration of 0.3 wt.%, the highest foam volume (460 mL) was produced with HM-OTAC (1:3). Compared to OTAC, the foams produced by each HM-OTAC surfactant exhibited higher temperature stability. In the presence of 30 mL methanol, the initial foam volume of all HM-OTAC surfactants (0.3 wt.%) was generally higher than that of OTAC. With 300 mL HM-OTAC (1:4) solution, the highest foam volume of 20.2 mL could be produced. HM-OTAC (1:3) showed the highest salt resistance.
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Ferrara, Massimo, Antonia Gallo, Carla Cervini, Lucia Gambacorta, Michele Solfrizzo, Scott E. Baker, and Giancarlo Perrone. "Evidence of the Involvement of a Cyclase Gene in the Biosynthesis of Ochratoxin A in Aspergillus carbonarius." Toxins 13, no. 12 (December 13, 2021): 892. http://dx.doi.org/10.3390/toxins13120892.
Повний текст джерелаАнотація:
Ochratoxin A (OTA) is a well-known mycotoxin with wide distribution in food and feed. Fungal genome sequencing has great utility for identifying secondary metabolites gene clusters for known and novel compounds. A comparative analysis of the OTA-biosynthetic cluster in A. steynii, A. westerdijkiae, A. niger, A. carbonarius, and P. nordicum has revealed a high synteny in OTA cluster organization in five structural genes (otaA, otaB, ota, otaR1, and otaD). Moreover, a recent detailed comparative genome analysis of Aspergilli OTA producers led to the identification of a cyclase gene, otaY, located in the OTA cluster between the otaA and otaB genes, encoding for a predicted protein with high similarity to SnoaLs domain. These proteins have been shown to catalyze ring closure steps in the biosynthesis of polyketide antibiotics produced in Streptomyces. In the present study, we demonstrated an upregulation of the cyclase gene in A. carbonarius under OTA permissive conditions, consistent with the expression trends of the other OTA cluster genes and their role in OTA biosynthesis by complete gene deletion. Our results pointed out the involvement of a cyclase gene in OTA biosynthetic pathway for the first time. They represent a step forward in the understanding of the molecular basis of OTA biosynthesis in A. carbonarius.
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Fatović-Ferenčić, Stella, and Jasenka Ferber Bogdan. "Otac i sinovi." Acta medico-historica Adriatica 16, no. 1 (2018): 49–74. http://dx.doi.org/10.31952/amha.16.1.2.
Повний текст джерелаАнотація:
This paper presents the role of Eugen Viktor Feller, a pharmacist and factory owner, with an emphasis on his marketing strategy in advertising his pharmacy specialty Elsa. Various types of contemporary press and advertising leaflets and packaging were used as a starting point for analysis. The abundance of the collected material provided an insight into Feller’s communication strategy of the approach to consumers, comparing advertising in different media and time spans. Following the appearance and elaboration of visual communication phenomena as part of family interest, approaches and advances in the development of advertising in the projects of Feller’s sons Miroslav and Ferdinand were presented. Upgrading to the father’s positive marketing experience they begin a more contemplative advertising campaign. Ferdinand Feller introduces the concept of collective pharmaceutical propaganda into pharmaceutical marketing, while Miroslav Feller becomes one of the leaders in the development of institutionalization and professionalization of commercial graphic design. Thus, marketing development was demonstrated through marketing approaches and innovative ideas of the three members of Feller family, illustrating the shift in approaches that marked the beginning of a different management within an industrial society, where advertising became an indispensable part and a promoter of market relationships.<span class="_wysihtml5-temp-placeholder"> <span class="_wysihtml5-temp-placeholder">
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Ma, Kang, Bei Chen Lan, and Zhen Hua Guo. "Preparation and Characterization of Organically Modified Sepiolite by Octadearyl Dimethyl Ammonium Chloride." Advanced Materials Research 684 (April 2013): 182–85. http://dx.doi.org/10.4028/www.scientific.net/amr.684.182.
Повний текст джерелаАнотація:
To improve the compatibility and dispersion of the sepiolite in polymers, a surfactant of octadearyl dimethyl ammonium chloride（OTAC）was used to modify sepiolite. The experiment was used to analyze the effects of OTAC dosage, reaction temperature and reaction time on the wettability of organically-modified sepiolite. The effects on the structure performance of sepiolite were investigated by XRD, SEM and contact angle measurements. The orthogonal experimental esults show that the optimum amount of OTAC, reaction temperature and reaction time are 400 mmol/kg, 90 °C and 120 min, respectively.
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Wang, Bao-tian, Can-hong Zhang, Xue-lian Qiu, En-yue Ji, and Wen-hui Zhang. "Research on Wetting-Drying Cycles’ Effect on the Physical and Mechanical Properties of Expansive Soil Improved by OTAC-KCl." Advances in Materials Science and Engineering 2015 (2015): 1–7. http://dx.doi.org/10.1155/2015/304276.
Повний текст джерелаАнотація:
Expansive soil experiences periodic swelling and shrinkage during the alternate wet and dry environments, which will result in severe damage to the slope stability. In this study, a promising modifier OTAC-KCl is introduced, which has a good diffusivity and is soluble in water or other solvents easily. Firstly, a reasonable combination of ameliorant 0.3% STAC and 3% KCl is chosen referring to the free swell test. Then, the best curing period, 14 days, is gotten from UCS tests. The effect of wetting and drying cycles on engineering properties of expansive soil improved by OTAC-KCl admixtures after 14-day curing is also studied accordingly. Both treated and untreated expansive soil samples are prepared for the cyclic wetting-drying tests which mainly include cyclic swelling potential and cyclic strength tests. Experimental results show that the swelling potential of expansive soil samples stabilized with OTAC-KCl is suppressed efficiently, and the untreated soil specimens will collapse when immersed in water while the treated specimens keep in good conditions. Moreover, expansive soil samples modified with 0.3% OTAC + 3% KCl show enough durability on the swelling ability, shear strength, and unconfined compressive strength, which means, that both the physical and the mechanical properties of stabilized expansive soil have been improved effectively.
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Feng, Yangyang, Yunxiao Feng, Xiaojie Zhou, Qihui Wang, and Yunli Cao. "Single and Double Alkyl Chain Quaternary Ammonium Salts as Environment-Friendly Corrosion Inhibitors for a Q235 Steel in 0.5 mol/L H2SO4 Solution." Coatings 13, no. 11 (October 27, 2023): 1847. http://dx.doi.org/10.3390/coatings13111847.
Повний текст джерелаАнотація:
In this work, the corrosion inhibition effects of octadecyl trimethyl ammonium chloride (OTAC) and dioctadecyl dimethyl ammonium chloride (DDAC) on Q235 steel in a 0.5 mol/L H2SO4 solution are studied. The results of the electrochemical experiment, contact angle measurement, and scanning electron microscopy indicate that the two ionic liquids belong to mixed-type corrosion inhibitors with good anti-corrosion performance. Additionally, OTAC has a better anti-corrosion ability than DDAC, implying that the steric hindrance effect of the double alkyl chain is not conducive to the adsorption of DDAC on the electrode surface.
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Qian, Yan, Zeen Huang, Guantao Zhou, Chenan Chen, Yuhang Sang, Zuolong Yu, Legao Jiang, Yuning Mei, and Yunxiao Wei. "Preparation and Properties of Organically Modified Na-Montmorillonite." Materials 16, no. 8 (April 18, 2023): 3184. http://dx.doi.org/10.3390/ma16083184.
Повний текст джерелаАнотація:
This study investigates the montmorillonite (MMT) content, rotational viscosity, and colloidal index of sodium montmorillonite (Na-MMT) as a function of the sodium agent dosage, reaction time, reaction temperature, and stirring time. Na-MMT was modified using different octadecyl trimethyl ammonium chloride (OTAC) dosages under optimal sodification conditions. The organically modified MMT products were characterized via infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. The results show that the Na-MMT with good properties (i.e., the maximum rotational viscosity and highest Na-MMT content with no decrease in the colloid index) was obtained at a 2.8% sodium carbonate dosage (measured based on the MMT mass), a temperature of 25 °C, and a reaction time of two hours. Upon organic modification of the optimized Na-MMT, OTAC entered the NA-MMT interlayer, and the contact angle was increased from 20.0° to 61.4°, the layer spacing was increased from 1.58 to 2.47 nm, and the thermal stability was conspicuously increased. Thus, MMT and Na-MMT were modified by the OTAC modifier.
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Roeßler, M., K. Pflüger, H. Flach, T. Lienard, G. Gottschalk, and V. Müller. "Identification of a Salt-Induced Primary Transporter for Glycine Betaine in the Methanogen Methanosarcina mazei Gö1." Applied and Environmental Microbiology 68, no. 5 (May 2002): 2133–39. http://dx.doi.org/10.1128/aem.68.5.2133-2139.2002.
Повний текст джерелаАнотація:
ABSTRACT The salt adaptation of the methanogenic archaeon Methanosarcina mazei Gö1 was studied at the physiological and molecular levels. The freshwater organism M. mazei Gö1 was able to adapt to salt concentrations up to 1 M, and the addition of the compatible solute glycine betaine to the growth medium facilitated adaptation to higher salt concentrations. Transport studies with cell suspensions revealed a salt-induced glycine betaine uptake activity in M. mazei Gö1, and inhibitor studies argue for a primary transport device. Analysis of the genome of M. mazei Gö1 identified a homolog of known primary glycine betaine transporters. This gene cluster was designated Ota (osmoprotectant transporter A). Its sequence and gene organization are very similar to those of the glycine betaine transporter OpuA of Bacillus subtilis. Northern blot analysis of otaC revealed a salt-dependent transcription of this gene. Ota is the first identified salt-induced transporter for compatible solutes in Archaea.
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Vučak, Ivica, and Ana Bakija-Konsuo. "Baldo i Ante Bibica, otac i sin – dva dubrovačka liječnika." Acta medico-historica Adriatica 18, no. 1 (2020): 149–64. http://dx.doi.org/10.31952/amha.18.1.9.
Повний текст джерелаАнотація:
Zdravstvo i liječnici koji su djelovali u Dubrovniku u posljedna dva stoljeća, nakon što je Napoleonova armija srušila Dubrovačku Republiku, manje su do sada privlačili pozornost medikohistoričara. U ovom su članku na temelju podataka iz onodobnih časopisa i novina te privatnih arhiva članova obitelji rekonstruirani životi i djelovanje dvojice dubrovačkih liječnika, oca i sina, Balda i Ante Bibice koji su živjeli potkraj 19. i u prvoj polovici 20. stoljeća. Baldo Bibica medicinu je završio u Beču i čitavog je života bio općinski liječnik, najprije u mjestima u okolici Dubrovnika, a od 1903. u Gružu. Ante Bibica studirao je medicinu u Gracu i Zagrebu i bio prvi Dubrovčanin koji je diplomu liječnika dobio na Medicinskom fakultetu zagrebačkog Sveučilišta. Specijalizirao je dermatovenerologiju u Beču i radio kao specijalist u Dubrovniku. Obojica su bili članovi liječničkih udruženja (na lokalnoj i na nacionalnoj razini), a bili su utjecajni i u društvenom životu grada.
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Bai, Bingbing, Qingchen Wang, Yan Sun, Rui Zhou, Gang Chen, and Ying Tang. "Synthesis of Porous MgAl-LDH on a Micelle Template and Its Application for Efficient Treatment of Oilfield Wastewater." Molecules 28, no. 18 (September 15, 2023): 6638. http://dx.doi.org/10.3390/molecules28186638.
Повний текст джерелаАнотація:
In this paper, a series of porous hierarchical Mg/Al layered double hydroxides (named as LDH, TTAC-MgAl-LDH, CTAC-MgAl-LDH, and OTAC-MgAl-LDH) was synthesized by a simple green hydrothermal method using wormlike micelles formed by salicylic acid and surfactants with different carbon chain lengths (0, 14, 16, and 18) as soft templates. BET, XRD, FTIR, TG, and SEM characterizations were carried out in order to investigate the structure and properties of the prepared materials. The results showed that the porous hierarchical CTAC-MgAl-LDH had a large specific surface area and multiple pore size distributions which could effectively increase the reaction area and allow better absorption capability. Benefiting from the unique architecture, CTAC-MgAl-LDH exhibited a large adsorption capacity for sulfonated lignite (231.70 mg/g) at 25 °C and a pH of 7, which outperformed the traditional LDH (86.05 mg/g), TTAC-MgAl-LDH (108.15 mg/g), and OTAC-MgAl-LDH (110.51 mg/g). The adsorption process of sulfonated lignite followed the pseudo-second-order kinetics model and conformed the Freundlich isotherm model with spontaneous heat absorption, which revealed that electrostatic adsorption and ion exchange were the main mechanisms of action for the adsorption. In addition, CTAC-MgAl-LDH showed a satisfactory long-time stability and its adsorption capacities were still as high as 198.64 mg/g after two adsorption cycles.
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Kiš Žuvela, Sanja, та Maura Filippi. "„Brzo al ne prevećˮ". Rasprave Instituta za hrvatski jezik i jezikoslovlje 44, № 2 (2018): 503–15. http://dx.doi.org/10.31724/rihjj.44.2.11.
Повний текст джерелаАнотація:
Prevodeći Lobeov Katekizam glazbe, otac hrvatske glazbene terminologije Franjo Kuhač jasno je zauzeo stav da praktični glazbenik mora poznavati izvorne talijanske glazbene nazive kako bi mogao muzicirati diljem svijeta (1875: X). Međutim, i sâm se ipak okušao u prevođenju (ne samo) talijanskih naziva kako bi čitatelju, odnosno učeniku omogućio njihovo razumijevanje, a njegov su uzor slijedili i drugi autori instruktivne literature. Analizom specijaliziranoga korpusa s područja glazbene umjetnosti autorice su odredile neke posebnosti prijevoda talijanskih oznaka za način izvođenja glazbe na hrvatski jezik, značenjskih aspekata tih prijevoda te posljedica odstupanja od izvornika na razumijevanje glazbe.
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Nikolić, Marija, and Ksenija Krstić. "Identification of the key characteristics of daughter-father avoidant attachment." Psiholoska istrazivanja 26, no. 2 (2023): 299–322. http://dx.doi.org/10.5937/psistra26-46419.
Повний текст джерелаАнотація:
The paper deals with the daughter-father avoidant attachment. The purpose of the study is to identify the characteristics, relationships and behaviour of fathers that are perceived by the daughters as the key ones for the formation of avoidant attachment with fathers. Bearing this in mind, the study focuses on youth who have a combination of two patterns, secure attachment to the mother and avoidant attachment to the father. The research was designed as a mixed-method study. In the first phase, 233 young people aged 15 to 35 (73.1% women) were included and the Experience in Close Relationships Scale was administered. From this sample, we then selected the participants (N=49, 73.6% women, Mage=20.9) who had a combination of secure attachment to the mother and avoidant attachment to the father. The final sample in the second, qualitative phase of the research consisted of nine girls who accepted to be interviewed. The data were collected through a semi-structured interview based on the AAI and analysed through Interpretative Phenomenological Analysis. The results point to three identified topics common to experiences of all nine participants. The topics relate to the consequences of fathers' physical absence during the period of growing up of their daughters, the consequences of the lack of two-way communication within the father-daughter interaction, as well as to the daughters' feeling that the father is a person in whose presence they cannot act freely and naturally in the way they can act in the presence of the mother, to whom they are securely attached. Research findings are discussed in the context of specific fathers' parenting characteristics, significant for the attachment development.
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Leš, Marinko, and Damir Demonja. "Prikazi demencija u recentnim filmskim ekranizacijama kao način društvenog osvještavanja." Nova prisutnost XX, no. 2 (July 15, 2022): 335–45. http://dx.doi.org/10.31192/np.20.2.7.
Повний текст джерелаАнотація:
Na globalni javnozdravstveni problem, porast broja oboljelih od demencija, naročito Alzheimerova tipa, osviješteno progovara i filmska umjetnost. S obzirom na široku vidljivost i pristupačnost svim skupinama, film ima značajnu ulogu u približavanju i upućivanju na, prema stručnjacima, vodeću bolest današnjice koja zahvaća stanice moždane kore i okolnih struktura, ponajprije hipokampalne regije, uslijed koje bolesnici gube psihičke, fizičke i mentalne sposobnosti. Dramski tekst »Otac« (»Le Père«), francuskog dramatičara Floriana Zellera, u kojem pratimo kako protagonista razara demencija, doživio je globalnu prepoznatljivost istoimenom filmskom ekranizacijom, koju je režirao upravo Zeller. Kao okosnica, ili glavni pokretač radnje ovoga filma, demencija se prikazuje drukčije nego što je uobičajeno, promijenjen je »kut snimanja«, jer se okrutnost ove bolesti promatra »iznutra». Osim ovoga primjera, u ovom znanstvenom radu predstavljeni su i filmovi Zauvijek Alice (Still Alice) i Supernova koji, također, obrađuju demencije, ali ponešto drukčijim filmskim postupcima. Premda se u filmu Otac (The Father) nigdje i nikada izrijekom ne spominje Alzheimerova bolest, poznato je da Zeller u obiteljskoj anamnezi ima slučaj te bolesti, a i prikaz kliničke slike ukazuje na simptome koji bi odgovarali tom obliku demencije. Zauvijek Alice gotovo dokumentaristički slijedi razvoj bolesti, dok u Supernovi pratimo početna obilježja frontotemporalne demencije. Slijedom toga, u ovome radu će se analizirati i protumačiti glumački i filmski postupci prikaza demencija. Cilj je ovoga rada analiziranjem triju odabranih filmskih primjera istaknuti važnost i nužnost društvene upućenosti i osviještenosti na bolesti koje uzrokuju demenciju, budući da se procjenjuje da će se učestalost Alzheimerove bolesti do 2050. godine učetverostručiti.
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Mršić Felbar, Iva, and Filip Šešek. "Proegzistencija kao bitno obilježje osobe Isusa Krista i poziv na nasljedovanje." Crkva u svijetu 58, no. 2 (June 21, 2023): 221–36. http://dx.doi.org/10.34075/cs.58.2.4.
Повний текст джерелаАнотація:
Članak istražuje pojam proegzistencije, poglavito kroz prizmu novozavjetnih svjedočanstava o Isusovu životu i djelovanju, te hyper (ὑπὲρ) formula. Proegzistenciju također promatra kao bitno obilježje Isusove osobe, koje se očituje kroz različita otajstva njegova povijesnog života, pri čemu je najistaknutiji aspekt služenja kao bitnog sadržaja proegzistencije. U radu se, nadalje, pokazuje na glavni izvor i smjer Isusove proegzistencije, a to je Bog Otac. Time je proegzistencija označena kao ontološko i teološko, a ne samo humanističko obilježje Isusa iz Nazareta, Krista.Konačno, članak ističe da je nasljedovanje Kristove proegzistencije konkretan poziv prema kojemu je čovjek pozvan živjeti i na njega odgovoriti.
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Terzić, Izet. "PUTEVI I STRANPUTICE U RAZUMIJEVANJU VJERE." Zbornik radova Islamskog pedagoškog fakulteta u Bihaću 3, no. 3 (June 15, 2010): 99–119. http://dx.doi.org/10.52535/27441695.2010.3.99-119.
Повний текст джерелаАнотація:
Biti u pravu uvijek i u svemu je jedna od najjačih egoističkih osobina kod čovjeka. Mnogi ljudi ne mogu podnijeti da i neki drugi mogu biti u pravu, pa čak i onda kada je to ljudskoj logici neobično. Veoma zanimljiv je odnos na relaciji otac i sin, kako ga Kur'an, a.š., navodi između Ibrahima a. s., i njegovoga oca. Ta ljubav i pažnja prema roditelju od strane djeteta nikada ne smije biti prekinuta, kao ni taj emotivni odnos, bez obzira na eventualne nesuglasice i nerazumijevanja. Međutim, jedina nit koja se morala prekinuti, jeste nit na ideološkom planu, kada sin (Ibrahim, a. s.,) zadržava svoj čisti tevhid, monoteizam, dok otac (Azer) ostaje privržen politeizmu - širku. I pored toga što nisu "na istome pravcu", dijete uvijek ostaje u obavezi da ispunjava svoje dužnosti prema roditeljima:''Po dunjalučkim pitanjima budi dobar prema njima". (Kur'an)وصاحبهما فى الدنيا معروفاًDrugi važan pogled na naslovljenu problematiku ukazuje na mogućnost ispravnih stavova dvaju (eventualno) suprotstavljenih strana, a obje mogu biti ispravne. (slučaj h. Omera, r. a. u tekstu) Učenje je Kur'ana na različite načine bogatstvo u formalnoj različitosti, gdje je suština ostala ista. Nijanse ne smiju biti uzrokom međusobnoga sukobljavanja. Pozivanje na Pravi put, put islama je prikazano kroz nekoliko primjera i na način koji nikako nije iz kolekcije mudrosti na koju Stvoritelj posebno ukazuje. Ponuđeni primjeri u tekstu ukazuju, nažalost, i na jedan dio mladalačke populacije koja je puna isključivosti - nespremne da prihvati i razumije duboku poruku Kur'ana i sunneta oko pitanja da'vetskog angažmana. Čitaocu navedenog rada ostaje, da se i sam zapita koliko smo u društvenim i međusobnim odnosima spremni voditi razuman dijalog sa drugima ili drugačijima od nas.Molimo Allaha, dž. š., da nam prosvijetli umove i ojača srca na putu Jedinog i Mudrog Allaha, dž.š. Amin!
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Gajić, Vladimir, Aleksandar Rašković, and Dragan Milojević. "Paracelsus a pioneer of emergency medicine and surgery, the father of toxicology and pharmacology, the precursor of homeopathy and chemotherapy." ABC - casopis urgentne medicine 22, no. 3 (2022): 14–20. http://dx.doi.org/10.5937/abc2203014g.
Повний текст джерелаАнотація:
In the entire constellation of doctors, pharmacists, physicists, alchemists, anatomists, pioneers of medicine, there are few who have left as much controversy behind as Paracelsus did. Paracelsus' real name was Theophrastus Philippus Aureolus Bombastus von Hohenheim and he was essentially an alchemist, physicist, astrologer and practiced the occult. His medical practice introduced numerous revolutionary treatments for that time, although many contemporaries considered his works to be a collection of superstitious and repulsive folk remedies. He wrote: "If you prevent the infection, nature will heal the wound on its own." This treatment brought him fame in the circles of Western medicine. He was also the first to introduce the use of various chemicals and minerals in treatment o illnes, the first to give the name zinc and introduced tin powder as an anthelmintic. In long ago 1530 Paracelsus wrote a clinical description of syphilis, in which he claimed that the disease could be successfully treated with orally, carefully measured doses of mercury compounds. During his stay in the mines holles, he wrote that the "miner's disease" (silicosis) was caused by inhaling metal fumes and that it was not a punishment for the sin used by mountain spirits. The first stated that, if given in small doses, "what makes a person sick also cures him" - expectation of the modern practice of homeopathy. It was written that Paracelsus cured many plague-stricken people in the city of Stertzing in the summer of 1534 by giving an oral tablet made of bread and secretion from the pustule. Paracelsus is often referred to as the father of toxicology. In that sense, his sentence is especially significant: "All things are poisonous and nothing is without poison; it's just the dose that makes a thing not poison." This remains the basic principle of toxicology to these days. Although he is often called a quack doctor, he is rightly among the 100 most influential scientists in all of human history.
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Fu, Ying Huan, Cheng Lin Lin, Li Feng Chen, Yu Song, and Hong Chao Ma. "Preparation of Cationic Rice Husk Flocculant and its Flocculating Characteristics." Advanced Materials Research 415-417 (December 2011): 1667–70. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.1667.
Повний текст джерелаАнотація:
Natural polymer cationic flocculant was prepared by introducing quaternary ammonium group into the rice husk molecules, using potassium permanganate as initiator. The influence of synthetic conditions affecting flocculation was studied, such as reaction temperature, reaction time, dosage of initiator, concentration of sulfuric acid and material ratio. The flocculent experiment of diatomite was chosen to evaluate the capability of flocculant. The results show that the flocculant has good flocculent capacity, the removal of turbidity can reach above 90% for simulated wastewater under the optimistic conditions of synthetic process as follows: etherification temperature, 50°C; etherification time, 3h; initiator concentration, 3 mmol/L; sulfuric acid concentration, 1.8 mmol/L; ratio of rice husk to OTAC, 2: 3.
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Filić, Andrea. "Promišljanja o kristološkom utemeljenju međuljudskoga milosrđa na tragu izabranih crkvenih otaca." Nova prisutnost XVI, no. 1 (March 22, 2018): 39–57. http://dx.doi.org/10.31192/np.16.1.3.
Повний текст джерелаАнотація:
U članku se, na tragu promišljanja izabranih crkvenih otaca, obrađuje tema kristološkog utemeljenja međuljudskog milosrđa. U uvodnom se dijelu naznačuju opasnosti koje mogu pratiti međuljudsko milosrđe ukoliko ga se reducira samo na tjelesno ili duhovno djelo milosrđa, tj. samo na čin. U nastavku se, kroz dva poglavlja, ukazuje na bitne teološke sadržaje koji osvjetljuju milosrđe kao otajstveni osobni odnos između Boga i čovjeka te ljudi međusobno. U prvom se poglavlju obrađuju otački naglasci o Božjem milosrđu iskazanu kroz čudesnu razmjenu u kojoj je Bog postao čovjekom da bi čovjeka učinio dionikom svoje božanske naravi. Činjenica da je to dioništvo već djelomice ostvareno po Sinovljevu utjelovljenju, muci i smrti prva je pretpostavka koja čovjeku omogućuje nasljedovanje Isusova poziva da bude milosrdan kao Otac (usp. Lk 6, 36). Drugo je poglavlje usmjereno govoru o međuljudskom milosrđu. Ondje se prvo ukazuje na otačke tekstove koji, polazeći od mističkog tumačenja Mt 25, 40 (»Što god učiniste jednom od moje najmanje braće, meni učiniste«), prema kojem se Isus Krist kao proslavljeni poistovjećuje sa svakim čovjekom, ističu da je milosrđe učinjeno čovjeku učinjeno i Kristu. Potom se obrađuju tekstovi iz kojih je razvidno da je međuljudsko milosrđe nemoguće bez trajne Božje pomoći te, na koncu, oni koji jasno daju do znanja da je milosrđe među ljudima istodobno i očitovanje već dogođenog pobožanstvenjenja i put prema njegovu konačnom ispunjenju. U zaključku se konstatira da međuljudsko milosrđe svoj puni smisao i snagu zadobiva iz činjenice duboke i trajne ontološke povezanosti Boga i čovjeka.
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Radic Bojanic, Biljana. "Metaphoricity of Lexemes from the Lexical Field Family in English and Porodica in Serbian." Филолог – часопис за језик књижевност и културу 22, no. 22 (December 30, 2020): 52–67. http://dx.doi.org/10.21618/fil2022052r.
Повний текст джерелаАнотація:
Relying on the theory of conceptual metaphor, this paper contrastively analyses lexemes from the lexical field family in English (family, father, mother, son, daughter, sister, brother) and porodica in Serbian (porodica, otac, majka, sin, kći, sestra, brat). The aim of the paper is to establish similarities and differences between metaphorical meanings of these lexemes and, on the basis of that, to determine the cross-linguistic and cross-cultural similarities and differences between these two languages. The analysis is based on the material excerpted from monolingual dictionaries of English and Serbian. Numerous similarities have been established between the lexemes from this lexical field, which is probably a consequence of the common European cultural space and the Christian foundation upon which it rests.
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Liu, Si Man, Bin Ba Yan, and Pin Wang. "Studied on Preparation Montmorillonite Modified by CTAMB and Adsorption Performance on Nitrobenzene." Advanced Materials Research 557-559 (July 2012): 996–1004. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.996.
Повний текст джерелаАнотація:
Na-montmorillonite was modified by CTAMB through the intercalation. The effects of amount, temperature, time on microstructure were characterized by X-ray diffraction; Fourier transforms infrared spectrometer, and N2adsorption isotherms. At same time, the adsorption performance on the nitrobenzene was compared by UV-visible absorption spectra. The results show that: CTAMB can effectively increase the crystal spacing of sodium montmorillonite. The reaction time and reaction temperature has little effect on the reaction process. The modified montmorillonite by CTAMB can adsorption nitrobenzene, and its adsorption properties relate with the crystal spacing. At the same time pore volume of modified montmorillonite can be increased, it is beneficial to the adsorption of nitrobenzene. Compare with OTAC, the pore radius of montmorillonite modified by CTAMB is smaller.
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Samardžić, Đurđina. "SINESTETIČKI REGISTAR – UMETNIČKO DELO SCENSKOG DIZAJNA." Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 37, no. 03 (March 6, 2022): 508–11. http://dx.doi.org/10.24867/16qo01samardzic.
Повний текст джерелаАнотація:
„Sinestetički registar – umetničko delo scenskog dizajna“, ukršta teorijsko i umetničko istraživanje o primalnom bolu i neurotičnoj – psihofizičkoj manifestaciji u izostanku zadovoljenja potreba. Biopolitičkom umetničkom praksom, rekonstruišem doživljaj sopstva, emotivna – telesna opažanja, lična – intimna sećanja i umetničke prakse – inicijacije, u cilju mapiranja simboličkih ponašanja kao rezultata emotivnih povreda. Razlažem tezu baveći se doživljajem ličnog deformiteta - rascepa, kroz fenomen poremećenih objektnih odnosa dete – roditelj i trijade otac – majka – dete. Ishod istraživanja predstavlja sinestetički registar kao privatni performans kroz iskustvo primala i svest o dominantnoj emotivnoj praznini, konstruisanoj pozitivnim i negativnim sen- zacijama začetih u vremenskim okvirima: prenatalni život- rođenje – rano detinjstvo. Rezultat rada je audio – vizuelni sadržaj u prostoru doma, sinestetički događaj ili radikalno – empirijsko iskustvo posmatranja materijalizovanog, emocionalnog procesa, koji je ujedno proces i metodologija lične umetničke prakse.
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Koziel, Slawomir. "NOISE ANALYSIS AND OPTIMIZATION OF GENERAL OTA-C FILTERS." SYNCHROINFO JOURNAL 8, no. 1 (2022): 7–12. http://dx.doi.org/10.36724/2664-066x-2022-8-1-7-12.
Повний текст джерелаАнотація:
In the paper, a general approach to noise analysis in continuous-time OTA-C filters is presented. Recently an increasing interest in the design of continuous-time filters based on the transconductance capacitor (OTA-C) technique has been observed. The operational transconductance amplifiers (OTAs) offer a higher bandwidth than their voltage-mode counterparts, can be easily tuned electronically, and have a better suitability for operating in reduced supply environment. Due to this, high frequency integrated filters are mostly realized as the OTA-C ones. Based on a matrix description of a general OTC filter topology, a universal formulas for evaluating the noise in any OTC filter are derived. The presented formulas can be easily implemented and used in computer-aided analysis/optimization software. The accuracy of the proposed method is confirmed by comparison with SPICE simulation. The example of application for finding the minimum-noise 5th order multiple-loop feedback filters implementing Butterworth and Bessel transfer functions is given.
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Rahman, S. M. Tawhidur, Md Nashif Iftekhar, Rashedul Alam, S. M. Raihan Gafur, and Dip Nandi. "Secured Question Paper Management System." AIUB Journal of Science and Engineering (AJSE) 20, no. 1 (April 15, 2021): 25–32. http://dx.doi.org/10.53799/ajse.v20i1.121.
Повний текст джерелаАнотація:
The examination is one of the essential parts of the student’s life. After learning from an institution, the students must attend and pass various types of examinations to get their certificates. In this process, sometimes students try to pass the examination by answering the leaked questions. From the beginning of making the question papers to delivering them to the students is now at stake in the existing question management system due to question leakage. So, the traditional way of managing the question papers needs to be changed so that it can stop the leakage of question papers. To secure the question papers and making a trustworthy, physical existence free, and affordable a system is proposed in this paper. To design this model, we have used the concept of Blockchain, Digital Signature, Randomization, OTAC.
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Qiu, J., D. Liu, G. Chen, Y. Wang, S. Jiang, P. Wu, G. Wang, and X. Lyu. "Microscopic Distribution of Chemical Constituents in the Interlayer Space of OTAC Intercalated Montmorillonite Complex:Molecular Simulation Study." ChemistrySelect 5, no. 27 (July 15, 2020): 8142–50. http://dx.doi.org/10.1002/slct.202001819.
Повний текст джерела
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Petrov, Emanuel. "Evanđeoski pristup Ivana Pavla II. migracijama kao izvoru blagostanja." Crkva u svijetu 55, no. 3 (December 11, 2020): 596–620. http://dx.doi.org/10.34075/cs.55.3.9.
Повний текст джерелаАнотація:
Polazeći od temeljnog stava da Crkva postoji kako bi evangelizirala, Ivan Pavao II. u svjetlu evanđeoskog čovjekoljublja i solidarnosti trasira put Crkve u odnosu prema fenomenu selilaštva na početku trećeg tisućljeća. Riječ je o zalaganju za dostojanstvo svakog konkretnog čovjeka i njegove obitelji, koje izvire iz čovjekove bogolikosti. Takav stav Sveti Otac beskompromisno zastupa u svojim poslanicama za Svjetski dan selilaca. U skladu s tim Crkva i svi njezini članovi, žele li ostati vjerni Kristovom poslanju, ne smiju biti slijepi na vapaje i potrebe migranata i njihovih obitelji, nego su dužni autentično živjeti Kristovu istinu, tj. evanđeoski intervenirati i iskazati solidarnost, te tako u dijalogu svjedočiti i navijestiti puninu spasenja pridržanu Crkvi po Kristu. Selilaštvo u tom smislu nije prijetnja, nego prilika za napredak i rast blagostanja ljudske obitelji. Shodno tome nezaobilazan put Crkve trećeg tisućljeća jest kultura života, tj. kultura dobrodošlice, integracije obitelji te humanog pluralizma.
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Čoralić, Lovorka, and Nikola Markulin. "Kotorski plemić i zapovjednik mletačkih prekomorskih pješaka Stjepan Buća i sastav njegove pukovnije (prva polovica 18. stoljeća)." Povijesni prilozi 38, no. 56 (2019): 261–94. http://dx.doi.org/10.22586/pp.v56i1.9134.
Повний текст джерелаАнотація:
Ovaj rad proučava vojnu karijeru Stjepana Buće, kotorskoga plemića i časnika mletačke vojske u 18. stoljeću. Pripadnici ove ugledne kotorske plemićke obitelji generacijama su se isticali u obnašanju važnih službi Mletačke Republike. Posljednjih desetljeća 17. stoljeća, u vrijeme ratova protiv Osmanlija, Buće ulaze u vojnu službu Republike. Upravo Stjepan, njegov brat Franjo i njihov otac Jeronim ostvaruju vrlo zapaženu vojnu karijeru. Stoga se proučavanjem vojne karijere ovih časnika, a rad je usredotočen na Stjepanovu, jasno ocrtava obrazac integracije lokalnih elita istočnojadranskoga prostora u mletački pomorski imperij. Sadržaj rada počiva na proučavanju izvorne građe nastale djelovanjem mletačke vojne administracije, koja se danas nalazi pohranjena u Archivio di Stato di Venezia i Državnome arhivu u Zadru. Glavni dio rada usmjeren je na analizu pješačke pukovnije Oltramarina u razdoblju od 1715. do 1741. godine, kojom je zapovijedao pukovnik Stjepan Buća. U prilogu rada donose se prijepisi dokumenata izravno vezanih uz vojno djelovanje Stjepana Buće kao pukovnika mletačkih pješačkih postrojbi
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Dantoni, Patrícia, Ana Clara B. Rodrigues, Margareth Mie N. Matsuda, and Nina Coichev. "Effect of some surfactants on the chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate and bis(2-nitrophenyl)oxalate with hydrogen peroxide." Canadian Journal of Chemistry 90, no. 6 (June 2012): 534–41. http://dx.doi.org/10.1139/v2012-025.
Повний текст джерелаАнотація:
The chemiluminescent reactions of bis(2,4,6-trichlorophenyl)oxalate (TCPO) and bis(2-nitrophenyl)oxalate (2-NPO) with hydrogen peroxide in acetonitrile/water micellar systems (anionic, cationic, and non-ionic) and γ-cyclodextrin were studied in the presence of fluoranthene or 9,10-diphenylanthracene, imidazole, and two buffer solutions, HTRIS+/TRIS and H2PO4–/HPO42–. The relative chemiluminenscence (CL) intensity is higher in the presence of the cationic (DDAB, CTAC, DODAC, and OTAC), anionic (SDS), and non-ionic (Tween 80) surfactants. In the presence of some non-ionic surfactants (Brij 35, Brij 76, and Tween 20), the CL intensity was partially quenched compared with the reaction with no surfactant. The sensitivity for hydrogen peroxide determination in the range 0.01 × 10−4 to 1.0 × 10−4 mol L–1, considering the slope of the calibration curves (maximum peak height of CL vs. concentration), improved with the introduction of DDAH, CTAB, and SDS in HTRIS+/TRIS buffer.
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Begić Jarić, Majda, and Marta Budicin Munišević. "Susret s ocem op-arta Victorom Vasarelyjem, restauratorska i povijesno-umjetnička istraživanja te konzervatorsko-restauratorski radovi na kolažu Barson." Portal, no. 13 (December 30, 2022): 103–16. http://dx.doi.org/10.17018/portal.2022.6.
Повний текст джерелаАнотація:
Otac op-arta Victor Vasarely autor je kolaža od papira naziva Barson u vlasništvu Muzeja suvremene umjetnosti u Zagrebu što je jedini takav primjerak u hrvatskim javnim ustanovama u kulturi. Kolaž je nastao 1967. godine tehnikom sitotiska na papiru lijepljenom na papirnatu podlogu i potom na lesonit velikih dimenzija, a na njegov su nastanak utjecali onodobni vodeći objektivistički umjetnički i filozofski pravci i spoznaje pod čijim je utjecajem Vasarely stvarao svoja djela. Kolaž je zatečen vrlo prašnjav i s mnogim oštećenjima po cijeloj površini papirnatog nosioca, poput krakelira, rasušenih i odlijepljenih dijelova te tragova djelovanja insekata. Djela optičke umjetnosti podrazumijevaju neometanu percepciju umjetnine koja je u slučaju kolaža Barson, uslijed nastalih oštećenja, bila onemogućena. Stoga su izvedeni konzervatorsko-restauratorski radovi koji su obuhvatili opsežna istraživanja i brojne probe, a potom i suho čišćenje, podljepljivanje obaju slojeva papirnatog nosioca, odstranjivanje tragova insekata te nužni, minimalni retuš. Pripadajući drveni okvir očišćen je od sloja prašine, a manji, nedostajući dio rekonstruiran je istom vrstom drva te završno retuširan.
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Balog, Zdenko. "Rekonstrukcija obitelji u 18. stoljeću – metode, mogućnosti i teškoće." Zbornik Janković 5, no. 5-6 (August 30, 2022): 9–49. http://dx.doi.org/10.47325/zj.5.1.
Повний текст джерелаАнотація:
Rekonstrukcija obitelji preuzimanjem podataka iz sve tri standardne matične knjige prati pojedinu obitelj od vjenčanja kroz ciklus rađanja potomstva, kroz jedan ili više očevih brakova, do prestanka obitelji i do prelijevanja preživjelog potomstva u nove obitelji. Povezivanjem obitelji predaka i potomaka pratimo rodove, a krajnji ishod praćenja roda kroz više naraštaja je rodoslov (genealogija). Praćenjem obitelji i rodova, kao i praćenjem prezimena kroz naraštaje potomaka prikupljamo važne podatke za rekonstrukciju života zajednice. Nukleus zajednice je župa, koja najranije počinje prikupljati podatke o pojedincima, a očuvanost župskih knjiga i njihova dostupnost uvjet su za rekonstrukciju obitelji. Relativno dobro sačuvane, župske knjige hrvatsko-slavonskog područja, te njihova potpuna dostupnost, odlična su podloga za izučavanje podataka iz građe. Odabrane župe, Požega i Križevci, srednje su velike župe, s uglavnom sačuvanim župskim knjigama za predmetno razdoblje. Iako je premisa obitelji otac i oko njega okupljene supruge i potomci, te iz svakog izučavanja obitelji ispadaju illegitimi, u svojoj ćemo rekonstrukciji ponekad probiti ove okvire i dati primjere drugačijeg gledanja na obitelj.
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Liu, Yang. "Abrasive Slurry Jet Characteristics Study." Academic Journal of Science and Technology 9, no. 3 (March 12, 2024): 119–33. http://dx.doi.org/10.54097/8n20yx13.
Повний текст джерелаАнотація:
In this paper, a coupled computational fluid dynamics-discrete element (CFD-DEM) approach is used to investigate the performance of abrasive slurry jets. Firstly, the CFD method was used to simulate the VES slurry jet flow characteristics. Secondly, an orthogonal design method was used to analyse the sensitivity of the parameters of zero shear viscosity , relaxation time and flow index of the Cross fluid, in which zero shear viscosity had the most significant effect on the flow field. As the zero-shear viscosity increases, the velocity of the flow field gradually increases, but the core section of the jet becomes less concentrated and the core section of the jet decreases. Based on the VES fluid formulation used in this project, the optimum zero-shear viscosity, relaxation time and flow index were optimised to 2.5 Pa-s, -0.1s and 0.2 respectively. The results showed that the addition of VES surfactant enhanced the erosion rate of the specimens and that the erosion rate increased with increasing OTAC concentration.
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CHO, SUNG-HWAN, SEONG-KI HONG, SANG-HO CHOI, and M. ZAHEERUDDIN. "MEASURED ENERGY CONSUMPTION ANALYSIS OF A DISTRICT HEATING SYSTEM UNDER DIFFERENT TEMPERATURE CONTROL STRATEGIES." International Journal of Air-Conditioning and Refrigeration 22, no. 02 (April 29, 2014): 1450008. http://dx.doi.org/10.1142/s2010132514500084.
Повний текст джерелаАнотація:
In this study, the secondary side measured energy consumption of a district heating system (DHS) with different hot water supply temperature control methods was compared. Two control methods were evaluated: an outdoor temperature reset control (OTRC) and an outdoor temperature predictive control (OTPC). While the OTRC strategy has been widely used for energy savings in DHS, the results show that the OTPC strategy resulted in higher energy savings. In general, the OTPC strategy maintained lower supply water temperature, and thereby reduced standby losses and increased overall heat transfer rate to the heated spaces due to higher water mass flow rate to the spaces. During the actual energy consumption monitoring, the OTPC strategy saved about 6.6% more energy compared to that of OTRC strategy. Also, it was found that under partial load conditions, such as during the daytime, the fluctuations in hot water supply temperature with OTRC were more severe than OTPC strategy. Overall, the results showed that the OTPC strategy gave better control and was more stable under full load and partial load conditions.
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Franković, Sanja. "Fairytale and Mythical Elements in the Novel A Swallow of 1000 Years by Tonči Petrasov Marović." Croatica et Slavica Iadertina 15, no. 2 (March 12, 2020): 459–88. http://dx.doi.org/10.15291/csi.2985.
Повний текст джерелаАнотація:
Rad analizira roman Lastavica od 1000 ljeta Tončija Petrasova Marovića. Tema zanemarene djevojčice i bračnih problema njezinih roditelja prepleće se s mediteranskom bajkovitom i mitskom dimenzijom, s obzirom na to da djevojčici i njezinu ocu pomažu personificirani pomagači: lastavica, leptiri i stablo. Stvaran društveni kontekst nakon Drugoga svjetskoga rata također je ocrtan. Pripadnost pomagača zemaljskoj i nebeskoj dimenziji tvori sveobuhvatnost svijeta, koja se shvaća dječjom logikom. S druge strane, jezični sloj uvodi odraslu logiku. Pripovjedna struktura romana je složena: u okvirnoj priči pripovjedač čeka ozbiljnu operaciju i susreće djevojčicu čiji mu život pripovijeda stablo koje vidi kroz bolnički prozor. Kao glavni pripovjedni tijek, priča stabla uvodi nekoliko fokalizatora: djevojčicu, njezina pokojnoga oca, leptire i lastavicu koju je otac djevojčice spasio u svojem djetinjstvu. Roman zatvara okvirna priča: djevojčica ostavlja bezdušnu majku i očuha te odlazi s pripovjedačem u Dalmaciju, koja je bila i zavičaj njezina oca. Sretan ishod već je bio najavljen očevim snovima. U analizi pripovjedne strukture i stilskih obilježja romana rad razmatra funkciju bajkovitih i mitskih elemenata, koji prepleću dječju logiku s mudrošću zrele ljudske dobi.
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Bundalo, Sava. "Učenje Didima Slepog o jednosušnosti Svetoga Duha sa Ocem i Sinom." Sabornost, no. 14 (2020): 115–22. http://dx.doi.org/10.5937/sabornost2014115b.
Повний текст джерелаАнотація:
Didima Slepog, profesora i upravitelja aleksandrijske bogoslovske škole, možemo svrstati u red prvih bogoslova drevne Crkve koji bogoslovstvuju o Duhu Svetom. Kada govori o Svetom Duhu Didim usvaja kapadokijsku terminologiju. Na njegovu pnevmatologiju veliki uticaj imaju Atanasijeva Pisama Serapionu. Oslanjajući se na 146. i 147. paragraf Didimovog dela O Duhu Svetom autor pokušava da prikaže na koji način Didim Slepi uči o jednosušnosti Svetoga Duha sa prva dva lica Svete Trojice. Jedan od načina je i učenje o dejstvu Božijem, odnosno dejstvu Svete Trojice u kojoj učestvuju jednako Otac, Sin i Sveti Duh, zatim o milosrđu, o ljubavi, o zajedništvu u svetosti i mudrosti. Kao aleksandrijski bogoslov on svoje učenje zasniva na Svetom Pismu i svoje stavove potkrepljuje redovnim navođenjima svetopisamskih stihova. Srž Didimove pnevmatologije je izražena u 166. paragrafu njegovog dela: "Priroda Svetoga Duha je ista kao priroda Oca i Sina". Na osnovu ovoga vidimo da je Didimova pnevmatologija sledovala učenju nikejsko-carigradskog simvola vere koji kaže: "I u Duha Svetoga, Gospoda, Životvornog, Koji od Oca ishodi, Koji sa sa Ocem i Sinom zajedno poštuje i zajedno slavi".
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Letica, Marito Mihovil. "Znanstveno-tehnički dosezi Boškovićeva metafizičkog prirodoslovlja." Filozofska istraživanja 39, no. 3 (October 15, 2019): 575–603. http://dx.doi.org/10.21464/fi39302.
Повний текст джерелаАнотація:
U ovom se radu ističe i argumentira da je Boškovićeva prirodoznanstvena teorija toliko ukorijenjena u metafizici i njome prožeta da se može ustanoviti kako je posrijedi osobiti primjer oštroumnog, domišljenog i dalekosežnog metafizičkog prirodoslovlja. Kritički se osvrćući na neutemeljena osporavanja metafizike i višestoljetne pokušaje njezina nadvladavanja, autor pokazuje da je Bošković metafizičkim mišljenjem u 18. stoljeću dospio do svog pojma jedinstvene privlačnoodbojne sile te proniknuo u strukturu tvari, čime je anticipirao, uz ostalo, teoriju relativnosti i kvantnu fiziku. Premda se Bošković izdašno i uspješno služio kvantitativnim metodama pri rješavanju problemâ iz geodezije, astronomije, optike, građevinske statike, hidrotehnike itd. – najznačajniji dijelovi njegove prirodoznanstvene ostavštine, kojima se transponirao stoljeće ili dva ispred svojega vremena, podržani su geometrijskom intuicijom i provedeni poglavito kvalitativnom metodom, odnosno metafizičkom spekulacijom. Autor k tome objašnjava da se za nastanak i razvoj elektromagnetizma odlučujućim pokazalo opisivanje elektromagnetskih pojava s pomoću Boškovićeve jedinstvene sile i njegove teorije o građi tvari, što je u posve određenom smislu istaknuo ‘otac elektromagnetizma’ James Clerk Maxwell; a do tih prirodoznanstvenih ideja Bošković nije dospio utječući se egzaktnom znanstvenom pristupu, nego metafizički zasnovanom i vođenom ‘ispravnom razmišljanju’.
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Cvetnić, Željko. "Povijest tuberkuloze." Veterinarska stanica 52, no. 1 (December 17, 2020): 73–84. http://dx.doi.org/10.46419/vs.52.1.13.
Повний текст джерелаАнотація:
Tuberkuloza je imala velik utjecaj na povijest čovječanstva pa tako i na umjetnost. Što bi umjetnički geniji iz svijeta književnosti, glazbe i slikarstva stvorili da nisu umrli vrlo mladi? U radu je prikazan utjecaj tuberkuloze na stvaranje umjetnika koji su bolovali od tuberkuloze. Tijekom romantizma pojavilo se mišljenje da tuberkuloza u oboljelih povećava kreativne sposobnosti. Među piscima koji su oboljeli od tuberkuloze bili su poznati njemački pisci: Wolfgang von Goethe, Friedrich Schiller i Georg Philipp Friedrich von Hardenberg. Tuberkulozan je bio i pisao o tubekulozi Lord Gordon Byron, a i Edgar Allan Poe je još kao dijete ostao bez roditelja oboljenih od tubekuloze, a i sam je umro od te bolesti. John Keats, engleski pjesnik, a i cijela njegova obitelj umrli su od tuberkuloze; od tuberkuloze je umro i ruski književnik Anton Pavlovič Čehov. Obitelj Brontë jedna je od najtragičnijih, ali isto tako i najtalentiranijih književnih obitelji. Svi su kao vrlo mladi umrli od tuberkuloze. Antun Branko Šimić, jedan od najvećih hrvatskih pjesnika, umro je od tuberkuloze u 27. godini života. Iako nije dugo živio, A. B. Šimić ostavio je iznimno bogati knjiženi opus. Mnogobrojna obitelj, otac i braća Ive Andrića književnika i dobitnika Nobelove nagrade za kniževnost umrli su od tuberkuloze, a i sam Ivo Andrić je dugo bolovao od te bolesti. U operama “La Traviata” Giuseppea Verdija i “La bohème” Giacoma Puccinija tematizirana je bolest toga vremena. tuberkuloza. Frederic Chopin, utjelovljenje je romantičarskog umjetnika, ne samo zbog pripadnosti stilskom razdoblju romantizma, već i zbog svog života ispunjenog događajima, osobnih i društvenih patnji. Umro je u 39. godini od tuberkuloze i uz velike je počasti pokopan na groblju Père Lachasie u Parizu, a njegovo je srce, potajno, prenijeto u Varšavu, gdje je uzidano u jedan stup crkve Svetoga Križa. Tuberkuloza je bila zastupljena i u likovnoj umjetnosti. Talijanski slikar Amadeo Modigliani, u početku svog umjetničkog rada želio je postati kipar, ali tjelesni napor prilikom klesanja, prašina i kašalj odvratili su ga od klesanja i vratili slikarstvu. Umro je od tuberkuloze u 36. godini života. Ferdinandu Hodleru, švicarskom slikaru, otac, majka, braća i sestre umrli su od tuberkuloze. Ovo teško iskustvo bolesti i smrti odrazilo se na njegovo slikarstvo. Edvard Munch, samouki norveški slikar bio je duboko pogođen smrću voljenih članova obitelji. Mračna raspoloženja tjeskobe i očaja ogledavaju se na njegovim platnima. Opisani su i mnogi hrvatski slikari oboljeli ili umrli od tuberkuloze: (Slava Raškaj umrla je u 29. godini života, Miroslav Kraljević u 28., Milan Steiner u 25., Tomislav Kolombar u 21. godina života). Usprkos njihovim kratkim životima, svaki je od njih ostvario izniman, cjelovit i znatan umjetnički opus.
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Campbell-Daigle, Fiona, and Katherine Vandemheen. "P68 Design and implementation of a patient tracking system for the Ontario trial of active compression-decompression cardiopulmonary resuscitation (OTAC)." Controlled Clinical Trials 16, no. 3 (June 1995): 111S—112S. http://dx.doi.org/10.1016/0197-2456(95)90548-j.
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Loan, Sajad A., M. Nizamuddin, Abdul R. Alamoud, and Shuja A. Abbasi. "Design and Comparative Analysis of High Performance Carbon Nanotube-Based Operational Transconductance Amplifiers." Nano 10, no. 03 (April 2015): 1550039. http://dx.doi.org/10.1142/s1793292015500393.
Повний текст джерелаАнотація:
In this paper, novel carbon nanotube (CNT) based operational transconductance amplifiers (OTAs) have been designed and simulated. Three types of CNT-based OTAs have been designed at 45 nm technology node and have been compared with the conventional CMOS-based OTA. The comparative analysis of the key characteristics of all the devices has revealed that a significant improvement in performance is observed in the CNT-based OTAs, particularly in a pure CNT-OTA. In the pure CNT-OTA, DC gain has increased by 218%, slew rate has increased by 22.58%, the output resistance has increased by 55.2% and the power consumption is ∼ 193 times less in comparison to the conventional CMOS-OTA. Further, common mode rejection ratio (CMRR) and power supply rejection ratio positive (PSRR+) has increased by 31.87% and 136.3%, respectively in pure CNT-OTA. The performance of CNT-based OTAs has also been studied thoroughly by varying the number of CNTs (N), CNT pitch (S) and the diameter of CNTs (D CNT ) at 0.9 V. It has been observed that their performance can be improved further by using optimized values of CNT number; inter CNT-pitch and diameter. The stability analysis has shown that the pure CNT-OTA is highly stable. A 16.7% and 4% increase in phase and gain margins is achieved in the pure CNT-OTA in comparison to the bulk CMOS OTA. Finally, band and high pass filters have been realized by using the proposed CNT-based OTAs.
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Choi, Jaesuk, Soon-Jae Kweon, and Hyuntak Jeon. "Single-Stage CMOS Operational Transconductance Amplifiers (OTAs): A Design Tutorial." Electronics 12, no. 18 (September 10, 2023): 3833. http://dx.doi.org/10.3390/electronics12183833.
Повний текст джерелаАнотація:
This paper presents a comprehensive design tutorial for four types of single-stage operational transconductance amplifiers (OTAs): (1) five-transistor OTAs, (2) telescopic cascode OTAs, (3) folded cascode OTAs, and (4) current mirror OTAs. These OTAs serve as fundamental building blocks in analog circuits. The operational principles of each OTA are reviewed, and the key performance metrics are derived through a hand analysis. These performance metrics encompass most crucial parameters, including small-signal parameters, frequency response, input and output swing ranges, rising and falling slew rates, nonidealities, and bias circuit simplicity. All of these metrics are verified and compared using the simulation. Furthermore, the practical applications of each OTA are summarized, and a case study demonstrates the enhancement of a neural recording amplifier’s performance through appropriate OTA selection. A thorough review of the essential building blocks will become a stepping stone to design high-performance analog amplifiers across diverse applications.
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Isya', Ana Diyanti Khoirul, Bambang Suratno, and Abdullah Azzam. "Analysis of Travel Agent Online Marketing Strategies on Social Media Content Using Sentiment Analysis and Social Network Analysis." Journal of Information Systems and Informatics 5, no. 4 (December 31, 2023): 1764–78. http://dx.doi.org/10.51519/journalisi.v5i4.630.
Повний текст джерелаАнотація:
The growth and development of the internet users have given Indonesia an opportunity to develop internet-based services, such as online travel agents (OTA). Along with this OTA development, conventional travel agents were declining. Many conventional travel agents have decided to switch to online travel agents. The emergence of new OTAs has also made OTAs competition more challenging. Thus, a lesson learned from the market leader OTA is expected to help new OTAs surviving the competition. This research uses the sentiment analysis method to understand consumers' perceptions towards OTA and uses the social network analysis method to recognize actors who play significant roles in the travel agent business network. Lastly, the marketing strategies of the major and well-known OTAs perceived by online consumers was analyzed. Using the data collected from three major OTAs social media network (i.e., Traveloka, Tiket, and Booking), it was found that the general impression of consumers towards OTA is a positive sentiment. Furthermore, each key actor for each OTAs can be recognized. Lastly, marketing strategies can be proposed, namely by providing the complete product offerings, provide competitive price, creating special promos for consumers, promotion to be carried out on all social media using Bahasa Indonesia, and make the products offered available throughout Indonesia and can be used by everyone, especially travelers.
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Raab, Carola, Orie Berezan, Natasa Christodoulidou, Lan Jiang, and Stowe Shoemaker. "Creating strategic relationships with online travel agents to drive hotel room revenue." Journal of Hospitality and Tourism Technology 9, no. 1 (March 12, 2018): 125–40. http://dx.doi.org/10.1108/jhtt-10-2016-0069.
Повний текст джерелаАнотація:
Purpose Hoteliers are often frustrated by the significant fees charged for bookings by Online Travel Agents (OTAs), and they try to encourage more direct bookings that circumvent the OTA system. However, there are billions of dollars of room revenues generated by OTAs every year; and many companies in other industries sell their products through multiple channels. The purpose of this study is to investigate how hotel revenue managers can collaborate successfully with OTAs. Design/methodology/approach Qualitative methods are applied in this study, specifically focus groups and in-person interviews with market managers of a leading OTA. Content analysis is performed, using ATLASti 5, to discover emerging themes and categories from the transcripts. Findings This study highlights several OTA value propositions and how hotels can benefit from them. Additionally, the findings of this study reveal that effective two-way communication between OTAs and revenue managers is the key to success. An “optimization loop” is established, which specifies that partnership and collaboration between OTAs and hotels must occur in a circular sequence of communication, engagement, collaboration and strategy. Research limitations/implications A major limitation for this study is that interviews were conducted only with market managers, limiting the perspective to that of OTAs. Originality/value There is a paucity of research and dialogue discussing productive relationships between OTAs and hotel firms. Through in-depth in-person interviews with a diverse set of market managers from a leading OTA, this study brings to light an array of perspectives of what is required to optimize the OTA/hotelier relationship.
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Starrels, MD, MS, Joanna L., Bryan Wu, MS, Deena Peyser, BA, Aaron D. Fox, MD, MS, Abigail Batchelder, MA, MPH, Frances K. Barg, PhD, MEd, Julia H. Arnsten, MD, MPH, and Chinazo O. Cunningham, MD, MS. "It made my life a little easier: Primary care providers’ beliefs and attitudes about using opioid treatment agreements." Journal of Opioid Management 10, no. 2 (March 1, 2014): 95. http://dx.doi.org/10.5055/jom.2014.0198.
Повний текст джерелаАнотація:
Objective: To understand primary care providers (PCPs)’ experiences, beliefs, and attitudes about using opioid treatment agreements (OTAs) for patients with chronic pain.Design: Qualitative research study. Participants: Twenty-eight internists and family medicine physicians at two health centers.Approach: Semistructured telephone interviews, informed by the Integrative Model of Behavioral Prediction. Themes were analyzed using a Grounded Theory approach, and similarities and differences in themes were examined among OTA adopters, nonadopters, and selective adopters.Results: Participants were 64 percent female and 68 percent white, and practiced for a mean of 9.5 years. Adoption of OTAs varied: seven were adopters, five were nonadopters, and 16 were selective adopters. OTA adoption reflected PCPs’ beliefs and attitudes in the following three thematic categories: 1) perceived effect of OTA use on the therapeutic alliance, 2) beliefs about the utility of OTAs for patients or providers, and 3) perception of patients’ risk for opioid misuse. PCPs commonly believed that OTAs were useful for physician self-protection, but few believed that they prevent opioid misuse. Selective adopters expressed ambivalent beliefs and made decisions about OTA use for individual patients based on both observed data and a subjective sense of each patient’s risk for misuse.Conclusions: Substantial variability in PCP use of OTAs reflects differences in PCP beliefs and attitudes. Research to understand the impact of OTA use on providers, patients, and the therapeutic alliance is urgently needed to guide best practices.
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Guo, Qiang, Chris K. Anderson, Junfeng Dong, Pengfei Zhao, and Qingkai Ji. "Coordination Contracts for Hotels and Online Travel Agents." Sustainability 12, no. 8 (April 20, 2020): 3355. http://dx.doi.org/10.3390/su12083355.
Повний текст джерелаАнотація:
Herein, we address a common problem of hotels in the current world of online selling, namely the management of relationships with third party resellers (also known as online travel agents (OTAs)). We highlight the role of OTAs in the current travel landscape, and we discuss the popular contracting forms between OTAs and hotels, which are the so-called merchant and retail (commission) models. We illustrate how these contracts fail to coordinate the hotel–OTA relationship, and then, we develop a new type of contract that can efficiently coordinate a supply chain consisting of the OTA and the individual hotels. We provide theoretical results and numerical examples for a one-to-one model with one OTA and one supplier and a more realistic setting with an OTA selling to consumers on behalf of numerous hotel partners.
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Held, Henrik-Riko. "In memoriam Marko Petrak (1972. – 2022.)." Zbornik Pravnog fakulteta u Zagrebu 72, no. 3 (June 30, 2022): 947–54. http://dx.doi.org/10.3935/zpfz.72.3.07.
Повний текст джерелаАнотація:
U ponedjeljak 17. siječnja 2022. godine, na tmuran i sumoran zimski dan, svega nekoliko mjeseci prije pedesetog rođendana, Marko Petrak napustio je ovaj svijet. Ovaj iznenadan i iznimno šokantan događaj snažno i bolno pogodio je mnoge – njegovu obitelj te zaista nebrojene prijatelje i kolege u cijeloj Hrvatskoj, od Zagreba do Konavala, ali i u cijeloj Europi i svijetu. U takvim trenucima riječi, zaista, kao ni tekstovi, ne mogu ni približno dočarati bol i težinu tog događaja za sve koji su ga poznavali i s njime živjeli ili surađivali. U korespondenciji koja je uslijedila neposredno nakon nemilog događaja s nekim njemu bliskim kolegama u inozemstvu mogu se istaknuti samo neki, možda teže prevodivi, izričaji koji su se koristili – am Boden zerstört ili perdita di equilibrio. No smrt je uvijek takva, a posebno kad nastupi, kako bi rekao otac Marka Petraka, veliki hrvatski pjesnik i akademik Nikica Petrak, koji nas je također nažalost napustio 2016. godine, “potpuno besmislena smrt iza ugla”. Naravno, kad umru veliki ljudi, velikani, kakav je nedvojbeno bio Marko Petrak, onda su bol i praznina na mnogim razinama utoliko veći. No Marko Petrak bio je mnogo više od velikog čovjeka. Naime, on je bio dobar čovjek. A dobri ljudi iza sebe ostavljaju dobra djela.
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Matić, Tomislav. "Žumberački uskoci i potraga Dušana Preradovića za obiteljskom prošlošću." Povijesni prilozi 41, no. 62 (July 15, 2022): 197–220. http://dx.doi.org/10.22586/pp.v41i62.18872.
Повний текст джерелаАнотація:
Rad istražuje isprave o obiteljima žumberačkih uskoka prezimena Preradović koje je pretraživanjem raznih arhiva pronašao Dušan Preradović, sin pjesnika Petra Preradovića, te pisma koja je slao povjesničaru Emiliju Laszowskom. Na temelju tih dokumenata rekonstruira se potraga Dušana Preradovića za poviješću njegove obitelji, kao i konstrukcija obiteljske tradicije i identiteta na temelju njegovih pronalazaka. Dušan arhive nije pretraživao osobno, nego je za to angažirao stručnjake poput Hermanna Ignaza Bidermanna i Emilija Laszowskog, a opterećivalo ga je i nedovoljno poznavanje historiografskoga rada. Vjerojatno ga je upravo ta potraga ponukala da poveća svoje poznavanje historiografije. Svoje je nalaze o obiteljskoj prošlosti objavio 1903. u časopisu Vitezović. Prilikom potrage naišao je na više obitelji prezimena Preradović, ali se fokusirao na onu žumberačkoga uskoka Ivana Preradovića jer je na temelju njegove grbovnice, izdane 1626., njegov otac, i on sâm, imao pravo na plemićki status. Pritom je bio svjestan da je njegova obiteljska veza s Ivanom nedovoljno dokazana, pa je nastojao pronaći još isprava, a potragu je proširio ispitivanjem osoba za koje je smatrao da bi mogle znati više o prošlosti Žumberka, poput grkokatoličkoga župnika Jovana Hranilovića. Iako nije uspio pronaći sigurne dokaze o obiteljskoj vezi s Ivanom Preradovićem, on i njegova obitelj smatrali su ga svojim pretkom.
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Berković, Danijel. "»Oci jedoše kiselo grožđe, a sinovima zubi trnu« (Jer 31,29)." Obnovljeni život 76, no. 2 (April 29, 2021): 171–84. http://dx.doi.org/10.31337/oz.76.2.2.
Повний текст джерелаАнотація:
Društveni procesi prepoznaju suštinsku razliku između pojmova temeljne i dominantne vrijednosti. Vrijednosti na kojima počiva sveukupni vrijednosni sustav neke zajednice smatraju se temeljnim i normativnim vrijednostima toga društva. Te temeljne vrijednosti katkad nisu i prevladavajuće (dominantne), što dovodi do neusklađenosti između temeljnih (deklariranih) i dominantnih (prevladavajućih) vrijednosti. One koje dominiraju mogu čak biti i u suprotnosti s temeljnim vrijednostima. Biblijski didaktički tekstovi mudrosnih tradicija (Knjiga o Jobu, Mudre izreke, Propovjednik) učestalo upućuju na neke odgojno–obrazovne temeljne vrijednosti izraelićanske zajednice. U tom roditelj, osobito otac, zauzima bitno mjesto. U stvarnosti se pak zamjećuje nesklad između tih temeljnih vrijednosti i vrijednosti koje dominiraju. Naime, s jedne je strane imamo, »Sine moj, čuj moju mudrost« (Izr 5,1), »Polušaj, sine moj, pouku oca svoga« (Izr 1,8) i personificirana mudrost koja »odgaja sinove svoje« (Sir 4,11). S druge strane biblijski narativ upućuje na ovo poslovično: »Oci jedoše kiselo grožđe, a sinovima zubi trnu« (Jer 31,29). Znatan je broj biblijskih narativa u kojima nailazimo tragove gdje su sinovi predstavljeni kao slab rezultat otčinskih propusta. U ovom se radu ispituju i preispituju razlozi i uzroci koji dovode do takvoga nesklada između temeljnih i prevladavajućih vrijednosti. Etiologija kao biblijski hermeneutski predložak, kojim se pojašnjavaju pravi uzroci pojedinih situacija, može biti jedno od pojašnjenja spomenute diskrepancije.
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LI, YONG-AN. "SYSTEMATIC SYNTHESIS OF OTA-BASED T-T FILTERS USING NAME METHOD." Journal of Circuits, Systems and Computers 22, no. 03 (March 2013): 1350002. http://dx.doi.org/10.1142/s0218126613500023.
Повний текст джерелаАнотація:
According to the terminal relations of the DO-OTA, eight nullor–mirror models for the DO-OTA are presented in this paper, Moreover, the NAME method for two different classes of T-T filters is considered. The class I filters, employing three SISO-OTAs, have 16 different forms, and the class II filters, employing one SISO-OTA and one DISO-OTA or one SIDO-OTA, have eight different forms. Due to use of canonic number of components, the circuits are easy to be integrated and their parameters can be tuned electronically through tuning bias currents of the OTAs. The MULTISIM simulation results have been included to verify the workability of the derived circuit.
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Mohammad Ehsan Aiman Wan Jusoh, Wan, and Siti Hawa Ruslan. "Design and analysis of current mirror OTA in 45 nm and 90 nm CMOS technology for bio-medical application." Bulletin of Electrical Engineering and Informatics 9, no. 1 (February 1, 2020): 221–28. http://dx.doi.org/10.11591/eei.v9i1.1860.
Повний текст джерелаАнотація:
This paper proposed a design and performance analysis of current mirror operational transconductance amplifier (OTA) in 45 nm and 90 nm complementary metal oxide semiconductor (CMOS) technology for bio-medical application. Both OTAs were designed and simulated using Synopsys tools and the simulation results were analysed thoroughly. The OTAs were designed to be implemented in bio-potential signals detection system where the input signals were amplified and filtered according to the specifications. From the comparative analysis of both OTAs, the 45 nm OTA managed to produce open loop gain of 45 dB, with common mode rejection ratio (CMRR) of 93.2 dB. The 45 nm OTA produced only 1.113 μV√Hz of input referred noise at 1 Hz. The 45 nm OTA also consumed only 28.21 nW of power from ± 0.5 V supply. The low-power consumption aspect displayed by 45 nm OTA made it suitable to be implemented in bio-medical application such as bio-potential signals detection system where it can be used to amplify and filter the electrocardiogram (ECG) signals.
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Huang, Hao, Yide Liu, and Dong Lu. "Proposing a model for evaluating market efficiency of OTAs: Theoretical approach." Tourism Economics 26, no. 6 (June 21, 2019): 958–75. http://dx.doi.org/10.1177/1354816619853114.
Повний текст джерелаАнотація:
As one of the most popular exchange intermediary for travel products, the online travel agencies (OTAs) compete fiercely. Previous studies on the OTA market efficiency focus on the travel product prices and distribution channels competition, but contradictions and paradoxes can be found between the theoretical explanations and empirical results. This article proposed a theoretical model by identifying two determinants of the OTA market efficiency: the matching ability and market size. The study shows that (1) the matching ability improves the market efficiency by enlarging the market size and increasing the effective range of competition; (2) the comparative advantage in matching ability of one OTA will lead to the efficiency occupation of other OTAs; and that (3) new OTAs or long tail travel products may reduce market efficiency, but it provides the opportunity to reconstruct the traditional industrial chain. This study enriches the economic theory of OTA and provides commercial guides for practice.