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Journal articles on the topic 'Structured derivates'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

LÓPEZ LÓPEZ, Lluvia Itzel, Sendar Daniel NERY FLORES, Sonia Yesenia SILVA BELMARES, and Aidé SÁENZ GALINDO. "Naphthoquinones: biological properties and synthesis of lawsone and derivates - a structured review." Vitae 21, no. 3 (2014): 248–58. http://dx.doi.org/10.17533/udea.vitae.17322.

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Background: Naphthoquinones are natural pigments that are widely distributed in nature and have important biological activities. Lawsone (2-hydroxy-1,4-naphthoquinone) and its synthetic derivatives, and especially those containing nitrogen, have promising potential for the treatment of different diseases due to their antibacterial, antifungal, antiviral, antitumor and antiparasitic effects, and for pest control via their molluscicidal and insecticidal activities. Their pharmacological activities and mechanisms of action are related to their oxide/reduction and acid/base properties, and can be

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Mircheva, Elka. "On the meanings of the verbs oblagati/oblozhiti and their derivatives in the Old Slavic literature (towards the question of the development of the semantic structure of the word in the history of the Bulgarian language)." Papers of the Institute for Bulgarian Language “Prof. Lyubomir Andreychin”, no. XXXVI (August 2023): 185–204. http://dx.doi.org/10.47810/pibl.xxxvi.23.06.

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The study reveals the historical changes in the semantics of the verbs облагати / обложити and their derivates облогъ, обложениѥ, обложник. Material from lexicographical works, electronic corpora of medieval texts, manuscripts is used. The obtained data have been structured in view of the semantic changes that have occurred. Some interesting cases of homonymy are traced. Errors in existing dictionaries are also analyzed. Conclusions are drawn about the main changes in the semantics of Old Bulgarian verbs and their derivatives in the millennial development of the Bulgarian language. Attention i

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Grygiel, Marcin. "The Cognitive Motivation Behind the Semantics of Hungarian Co-Verbial Constructions with Össze and Szét." Studies in Logic, Grammar and Rhetoric 61, no. 1 (2020): 31–47. http://dx.doi.org/10.2478/slgr-2020-0002.

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AbstractThe use of an elaborate system of co-verbial constructions is the hallmark of the Hungarian language and one of the biggest challenges a translator or a learner of this language has to face. Co-verbial constructions consist of verbs, or their derivates, accompanied by a limited number of prefixes or particles that modify their meanings. They not only perform numerous syntactic and lexical functions, which is important in terms of language production, but also are able to change the meaning of the verb completely. The aim of this study is to trace the cognitive motivation behind the use

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Montagni, Tatiana, Mauricio Ávila, Sofía Fernández, Sylvia Bonilla, and María Fernanda Cerdá. "Cyanobacterial Pigments as Natural Photosensitizers for Dye-Sensitized Solar Cells." Photochem 4, no. 3 (2024): 388–403. http://dx.doi.org/10.3390/photochem4030024.

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Three filamentous freshwater cyanobacterial strains were grown at high light intensity to produce lipidic dyes composed of xanthophylls, carotenes, and chlorophyll a. The properties of the pigments were evaluated as suitable natural compounds to be applied in dye-sensitized solar cells (DSSC). The assembled DSSC were characterized using the density current vs. potential profiles and electrochemical impedance spectroscopy. With an efficiency of 0.127%, our results are higher than those previously reported using similarly structured compounds from natural sources such as algae and cyanobacteria,

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COSTEA NOUR, Iuliana Florina, Florentina ȘORCARU, and Geta CÂRÂC. "Investigation of Structural Characteristics by FTIR Spectroscopy of Chitosan Derivative with N Heterocyclic Compound." Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science 45, no. 4 (2022): 46–52. http://dx.doi.org/10.35219/mms.2022.4.08.

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Chitosan and chitosan derivatives are biomaterials of great scientific interest for biomedical applications although some of the properties are limited as their solubility in the aqueous medium. N-heterocyclic compounds are of interest for chitosan alkylation and new derivatives can be obtained by modification of his structure resulting thus new structures of biomedical interest Chitosan samples from two sources were analysed, in which the dissociation is favoured in the aqueous medium by the presence of a bipyridine salt, N,N'-bis(phenacyl)-4,4'-bipyridinium dibromide. The synthesis of chitos

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Nabi, Sahila, Mudasir Majeed, Nazia Zahoor, and S. M. Salim Khan. "Awareness towards Drug Abuse and its Associated Factors in Young Adults of Kashmir, North India: A Cross Sectional Study." Healthline 14, no. 2 (2023): 157–61. http://dx.doi.org/10.51957/healthline_508_2023.

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Introduction: Drug abuse has been defined as an extreme desire to obtain and use increasing amounts of one or more substances. The risk factors for developing drug abuse problems include peer pressure, curiosity, and conflict in personal relations. Objective: 1. To assess awareness of young adults of Kashmir towards drug abuse. 2. To assess the perspectives of the participants regarding factors responsible for drug abuse. Method: An online cross-sectional study was conducted among 300 young adults of Kashmir, North India in month of September 2022.Details regarding the socio-demographic charac

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7

Wünsch, L. "Checklist for the Structural Description of the Deep Phenotype in Disorders of Sexual Development." International Journal of Endocrinology 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/816365.

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This paper addresses the question, how the variations of the deep phenotype in disorders of sex development (DSD) are appropriately described. This is a relevant question, because extensive phenotypic variability occurs in gonads and sex ducts. With the advance of video endoscopy and laparoscopy, fresh insight in gonadal and sex duct anatomy is emerging. So far, an attempt to standardize the diagnostic approach and, in particular, how to document these findings has not been published. We propose a standardized examination schedule for these procedures. It consists of 5 pictures of relevant ana

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Alhadi, Othman, Mohiuddin Mohiuddin, Islam Mohammed, and Jamaluddin Talha. "Measuring Customer Satisfaction with Mobile Banking Applications in Sudan." International Journal for Scientific Research 4, no. 6 (2025): 141–64. https://doi.org/10.59992/ijsr.2025.v4n6p7.

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In light of the rapid digital transformation in the banking sector, this study aimed to measure and analyse the level of customer satisfaction with mobile banking applications in Sudan by examining the impact of several technical and service-related factors, including: usability, security and privacy, quality of banking services and modern technologies, technical stability, and customer support. The research problem derivates from the observed variation in user satisfaction despite the growing adoption of digital platforms by Sudanese banks. The study utilized a descriptive analytical quantita

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Kostryba, Olha V. "COGNITIVE SEMANTICS OF NOUNS IN DENUMERATIVE WORD FORMATION (BASED ON UKRAINIAN LANGUAGE)." Alfred Nobel University Journal of Philology 1, no. 29 (2025): 328–48. https://doi.org/10.32342/3041-217x-2025-1-29-19.

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Revival of interest in the linguistic-cognitive interpretation of the deep level of language, as a means of facilitating the computerization of the semantic continuum of derived words, is driven by the schemati- zation of both implicit and explicit data concerning these words. The mental interpretation of word-forma- tive semantics, framed by the word-formative nest as a structured framework of knowledge, underscores the significance of this scientific inquiry. The goal of the work is to model natural language through the propositional semantics of derived words, which are expressions of seman

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Iswanto, Ponco, Irvan Maulana Firdaus, Ahmad Fawwaz Dafaulhaq, Ahmad Ghifari Ramadhani, Maylani Permata Saputri, and Heny Ekowati. "Quantitative Structure-Activity Relationship of 3-Thiocyanate-1H-Indoles Derived Compounds as Antileukemia by AM1, PM3, and RM1 Methods." Jurnal Kimia Sains dan Aplikasi 26, no. 3 (2023): 109–17. http://dx.doi.org/10.14710/jksa.26.3.109-117.

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Cancer is a disease with fatal consequences; thus, searching for innovative compounds with anticancer properties remains an active pursuit. One of the highly promising candidates is a compound derived from 3-thiocyanato-1H-indoles. However, the number of derivative compounds is currently limited. A quantitative structure and activity relationship (QSAR) study was conducted on derivate compounds 3-thiocyanato-1H-indoles to establish equations that predict the anticancer activity of more effective derivatives. This study aims to compare the effectiveness of the AM1 (Austin Model 1), PM3 (Paramet

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J. Ekowati, D. Pebrianti, G. C. Ananda, D. R. Ramadhan, R. Widyowati, and K. A. Nofianti. "DESIGN AND SYNTHESIS NOVEL COMPOUNDS OF ORTHOCOUMARIC ACID DERIVATES AS ANTI-THROMBOTIC CANDIDATE." RASAYAN Journal of Chemistry 17, no. 03 (2024): 1387–94. http://dx.doi.org/10.31788/rjc.2024.1738657.

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It has been reported that aspirin and P2Y inhibitors have emerged as the preferred therapeutic agents for managing vaso-occlusive illness due to their anti-thrombotic properties. However, complaints about the side effects of these drugs are still being reported. Ongoing research is being conducted on the design and development of novel antithrombotic agents to obtain good health and well-being. ortho-Coumaric acid derivates were designed using the ChemDraw program, while a physicochemical prediction study was carried out by the Swiss ADME program, and the MOE platform was operated to predict t

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Wei, C., A. R. Mohd. Ali, S. H. Goh, and T. C. W. Mak. "Structures of novel dehydroxycycloleuconolam alkaloid derivates." Acta Crystallographica Section C Crystal Structure Communications 42, no. 11 (1986): 1554–56. http://dx.doi.org/10.1107/s0108270186091497.

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13

Groth, Moritz, Kate Ponto, and Michael Shulman. "The additivity of traces in monoidal derivators." Journal of K-theory 14, no. 3 (2014): 422–94. http://dx.doi.org/10.1017/is014005011jkt262.

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AbstractMotivated by traces of matrices and Euler characteristics of topological spaces, we expect abstract traces in a symmetric monoidal category to be “additive”. When the category is “stable” in some sense, additivity along cofiber sequences is a question about the interaction of stability and the monoidal structure.May proved such an additivity theorem when the stable structure is a triangulation, based on new axioms for monoidal triangulated categories. in this paper we use stable derivators instead, which are a different model for “stable homotopy theories”. We define and study monoidal

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14

Hoerder, Gregor J., Simon Peschke, Klaus Wurst, et al. "Polymorphs and derivates of Sr2LiAlO4:Eu2+." Zeitschrift für Naturforschung B 74, no. 10 (2019): 765–72. http://dx.doi.org/10.1515/znb-2019-0133.

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AbstractRecently, Wang et al. (Z. Wang, J. Ha, Y. H. Kim, W. B. Im, J. McKittrick, S. P. Ong, Joule2018, 2, 914–926) predicted and discovered Sr2LiAlO4, a quaternary compound with a layered structure crystallizing in the monoclinic space group P21/m, and they refined the structure from PXRD data. Upon partially substituting strontium with europium, the substance exhibits a yellow broadband luminescence consisting of two overlapping emission bands. In this paper, the crystal structure of Sr2LiAlO4 is confirmed by additional SC-XRD measurements and a newly discovered polymorph of Sr2LiAlO4 is pr

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Freiherr von Richthofen, Carl-Georg, Bastian Feldscher, Kai-Alexander Lippert, Anja Stammler, Hartmut Bögge, and Thorsten Glaser. "Electronic and Molecular Structures of Heteroradialenes: A Combined Synthetic, Computational, Spectroscopic, and Structural Study Identifying IR Spectroscopy as a Simple but Powerful Experimental Probe." Zeitschrift für Naturforschung B 68, no. 1 (2013): 64–86. http://dx.doi.org/10.5560/znb.2013-2241.

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The vicinity of a hydrogen bond donor (O-H) and a hydrogen bond acceptor (C=O or C=N- R) in salicylaldehydes and ortho-Schiff bases results in significant structural variations compared to the monosubstituted derivatives that are reflected in the electronic structure and thus in the spectroscopic properties. This interplay between intramolecular hydrogen bonding and multicenter p- electron delocalization is the origin of the concept of resonance-assisted hydrogen bonding (RAHB). Herein, the complexity is extended from one hydrogen bond donor-acceptor pair in salicylaldehyde and ortho-Schiff ba

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Sibiryakov, Boris, Lourenildo W. B. Leite, and Wildney W. S. Vieira. "MODEL OF THE STRUCTURED CONTINUUM, AND THE RELATION BETWEEN SPECIFIC SURFACE AREA, POROSITY AND PERMEABILITY." Revista Brasileira de Geofísica 31, no. 4 (2013): 559. http://dx.doi.org/10.22564/rbgf.v31i4.337.

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ABSTRACT. Contrary to the Cauchy and Poisson classical seismic theory of the continuum, the new theory for structured (also called porous, fractured, or blocked) media must contain several degrees of freedom. This fact is evident because elementary blocks (grains) may transfer the motion by contact interaction, by rotation, and by group of particles. Therefore, the energy content is not only contained within the first spatial derivatives (strains), but the potential energy content is within the second (curvatures) and other higher order spatial derivatives. Thus, the equation of motion of poro

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17

Minasyan, Alla. "Pragmatic Aspects of Derivatives Functioning in Fiction." Armenian Folia Anglistika 8, no. 1-2 (10) (2012): 85–90. http://dx.doi.org/10.46991/afa/2012.8.1-2.085.

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The characteristics of the formation of derivatives, the compound nature of their structure provide ample opportunities for the realization of its purposes. Various transformations can take place inside derivates – dissolution of constituents and re-arrangement, fusions, use of a morpheme as an independent word, violation of the standards of the combinability of morphemes, repetition of the morphemes in derivatives, etc. These transformations take place in linguistic units that create word-forming stylistic devices beyond their traditional area of application.

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Mysik, S. V. "Kinetic and Activation Characteristics of Structure Rearrangement Processes in Ethoxylated Isononylphenol Derivates." Radio Engineering, no. 1 (March 5, 2020): 17–30. http://dx.doi.org/10.36027/rdeng.0120.0000160.

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The paper presents the calculation results of the kinetic and activation characteristics of fast and ultrafast structure rearrangement processes in liquid hydroxyethylated derivates of isononylphenol (ОНФn). Parameters were calculated using the relaxation theory of acoustic spectroscopy of liquids based on the analysis of the acoustic spectra of speed and sound absorption of the hydroxyethylated derivates of isononylphenol. The paper shows that two simple regions of acoustic dispersion can describe the acoustic spectra in the frequency range from 12 MHz to 2 GHz and the temperature range from

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19

Malu, Pooja, Shivani Singh, Sonal Vahanwala, Kaustubh Sansare, and Neha Chaudhari. "Colour Doppler Imaging in Benign Malformation of Buccal MucosaA Case Report." Nair Hospital Dental College Journal of Contemporary Dentistry 2 (December 6, 2022): 54–59. http://dx.doi.org/10.56136/nhdcjcd/2022_00033.

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Hamartomas, occurring in oral and maxillofacial region are basically indigenous tissue malformations that arise from epithelial derivatives, mesenchymal derivatives and odontogenic derivates. Vascular anomaly, is a mesenchymal hamartomatous condition- a broader term describing condition of blood vessels including abnormal number, structure and position imparting blue/purple colour to oral mucosa. Such anomalies are broadly classified into two basic types like vascular tumours and vascular malformations. A clinician should possess skills and knowledge for identifying such lesions and be aware o

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20

Awad, Mohamed K., Saida A. El-Enien, and Mohammed H. Rizk. "Quantitative Structure-Trypanocidal Activity Relationship Analysis of Phenothiazine Derivatives." Indian Journal of Applied Research 3, no. 9 (2011): 65–68. http://dx.doi.org/10.15373/2249555x/sept2013/20.

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21

Darji. "CONTINUOUS EXTENSIONS WHICH PRESERVE DERIVATE STRUCTURES." Real Analysis Exchange 22, no. 1 (1996): 43. http://dx.doi.org/10.2307/44152711.

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22

Andreozzi, R., R. Cesaro, A. Gonnella, R. Marotta, and F. Pirozzi. "Estimation of biodegradation kinetic constants for aromatic derivates through aerobic batch experiments." Water Science and Technology 52, no. 8 (2005): 257–64. http://dx.doi.org/10.2166/wst.2005.0271.

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The kinetics of aerobic biodegradation were studied for 20 aromatic species by using sludges taken from a municipal sewage treatment plant. The reproducibility of the results is tested with respect to the period of collection of the sludges and the wastewater treatment plant where they were taken. The comparison of kinetic constants estimated for investigated chemicals allows evaluation of the effect on the reactivity due to the presence of single groups (i.e. −OH, −CH3, −Cl, −NO2) into the aromatic structures. The search for easy structure–reactivity relations is also attempted by using some

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23

Kovács-Szamosi, Rita, Gábor Kondor, and József Varga. "Derivatív-ügyletek az Iszlám Bankrendszerben : Derivatives in Islamic Bank System." Köz-gazdaság 16, no. 4 (2021): 203–22. http://dx.doi.org/10.14267/retp2021.04.12.

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Az iszlám terjedésével egyre nagyobb hangsúlyt kapnak az iszlám bankrendszer sajátosságai az európai pénzügyi szektor számára is. Népszerű tévhit az iszlám bankrendszerrel kapcsolatban, hogy a konvencionális bankrendszerben használt derivatív ügyletek nem jutnak szerephez benne. Ennek a cáfolására mutatjuk be, miként jelennek meg a derivatív ügyletek az iszlám bankrendszerben. Tanulmányunkban elsősorban az opciókra és a swap ügyletekre koncentrálunk. A tanulmány során arra is kitérünk, hogy az iszlám bankrendszerben ezek a megoldások milyen gyakorlati formában jelennek meg a pénzügyi közvetítő

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Visweswara, Rao Ch, Ramanaiah M., and Lakshman Shaik. "Effect of Palladium acetate as Catalyst on the Synthesis of Novel Isoxazole Derivatives incorporating Carbazole Moiety." Research Journal of Chemistry and Environment 27, no. 11 (2023): 24–34. http://dx.doi.org/10.25303/2711rjce024034.

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Isoxazole and carbazole derivatives have a wide range of biological activity and are of high interest to medicinal chemists. We report the synthesis and characterization of a series of novel isoxazole derivatives which were synthesized by linking the isoxazole moiety to the carbazole nucleus. The process of synthesis and the steps involved in the synthesis of these novel derivates are described in detail in this study. We confirmed the structures of the novel compounds by 1H NMR, 13C NMR, LCMS spectral data as well as by elemental analysis. The antimicrobial activity of newly synthesized compo

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Akune, Yoko, Risa Hirosawa, Atsushi Koseki, and Shinya Matsumoto. "Role of halogen substituents in a series of polymorphic 2,5-diamino-3,6-dicyanopyrazine derivatives with highly flexible groups." Zeitschrift für Kristallographie - Crystalline Materials 232, no. 5 (2017): 395–405. http://dx.doi.org/10.1515/zkri-2016-2007.

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AbstractThe crystal structures of the ortho-X-benzyl derivatives, where X=F, Cl, Br, I, and Me, of 2,5-bis(N,N-dibenzylamino)-3,6-dicyanopyrazine dyes (C34H24N6X4) were analysed to evaluate the effect of a systematic series of structures on the occurrence of polymorphism. Detailed crystal structure analysis indicated that the thermally stable forms of the polymorphic derivatives (Cl and Br derivatives) were close-packed, whereas those of the non-polymorphic derivatives (F and I derivatives) were stabilised by an intermolecular interaction involving the ortho-substituents. In the thermally meta

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Kohne, Bernd, Klaus Praefcke, and Werner Stephan. "Discogene Monothioscyllitol-Derivate." CHIMIA 40, no. 1 (1986): 14. https://doi.org/10.2533/chimia.1986.14.

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Two derivatives (3 and 4) of the hitherto unknown 1-deoxy- 1-mercapto-scyllo-inositol (monothioscyllitol), a sulfur analogue of the naturally occurring scyllo-inositol, have been prepared by nucleophilic substitution reaction from a hexaester of myo-inositol (2). They are the first thermotropic discotic liquid crystalline compounds with an alicyclic saturated «core» and a non-centrosymmetric structure exhibiting strong dipole moments in benzene solution and wide mesophase ranges.

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Bo Wang, Bo Wang, Zhi qiang Cai Zhi qiang Cai, Xiao yu Shi Xiao yu Shi, Xiang Li Xiang Li, Shuai Li Shuai Li, and and Ji xin Li and Ji xin Li. "Synthesis, Crystal Structure and Anticancer Activity of Substituted Quinazoline Derivatives." Journal of the chemical society of pakistan 43, no. 4 (2021): 466. http://dx.doi.org/10.52568/000583/jcsp/43.04.2021.

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News series of substituted quinazoline derivatives has been synthesized from 3,4-dihydro-7-methoxy-4-oxoquinazoline-6-yl acetate (1) by five-step procedures including chlorination, amination, hydrolysis and etherification. The structures of target compounds were confirmed by IR, 1H-NMR, element analysis and single-crystal X-ray diffraction. The results showed that the compound 8c exhibited remarkable inhibitory activity against MCF-7 cell lines with inhibition rate value of 38.45 %, which was comparable to that of the positive control Gefitinib (inhibition rate = 13.25 % for MCF-7). The initia

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Bo Wang, Bo Wang, Zhi qiang Cai Zhi qiang Cai, Xiao yu Shi Xiao yu Shi, Xiang Li Xiang Li, Shuai Li Shuai Li, and and Ji xin Li and Ji xin Li. "Synthesis, Crystal Structure and Anticancer Activity of Substituted Quinazoline Derivatives." Journal of the chemical society of pakistan 43, no. 4 (2021): 466. http://dx.doi.org/10.52568/000583.

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News series of substituted quinazoline derivatives has been synthesized from 3,4-dihydro-7-methoxy-4-oxoquinazoline-6-yl acetate (1) by five-step procedures including chlorination, amination, hydrolysis and etherification. The structures of target compounds were confirmed by IR, 1H-NMR, element analysis and single-crystal X-ray diffraction. The results showed that the compound 8c exhibited remarkable inhibitory activity against MCF-7 cell lines with inhibition rate value of 38.45 %, which was comparable to that of the positive control Gefitinib (inhibition rate = 13.25 % for MCF-7). The initia

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Zapata-Galván, V., L. M. Torres-Martínez, and P. Quintana. "Síntesis y caracterización de nuevas soluciones sólidas de fluoruros con estructura tipo fluorita y derivadas." Boletín de la Sociedad Española de Cerámica y Vidrio 40, no. 4 (2001): 285–88. http://dx.doi.org/10.3989/cyv.2001.v40.i4.738.

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Ibrayev, M. K., S. B. Akhmetova, A. T. Takibayeva, M. B. Issabayeva, A. O. Nurkenov, and О. T. Seilkhanov. "Synthesis, structure and antimicrobial activity of substituted chalcones and their derivatives." Bulletin of the Karaganda University. "Chemistry" series 95, no. 3 (2019): 28–36. http://dx.doi.org/10.31489/2019ch3/28-36.

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Kohne, Bernd, Klaus Praefcke, Thomas Derz, Heinz Hoffmann, and Barbara Schwander. "Lyotrop flüssigkristalline Benzolhexamin-Derivate." CHIMIA 40, no. 5 (1986): 171. https://doi.org/10.2533/chimia.1986.171.

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Preliminary results of investigations on hexa-amides of benzenehexamine demonstrate that these disc-shaped compounds - as such already known since 1937 - exhibit very interesting lyotropic liquid crystalline properties in various lipophilic solvents. At lower concentrations (e.g. about 20 wt.%) a nematic phase with an extraordinary wide range of stability (at least 65 °C!) has been found, whereas at higher concentrations a second mesophase exists with hexagonal structure.

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Prelipceanu, Marius, and Adrian Graur. "Light-Emitting Devices Based on New Phenanthroline Derivates." ACTA Universitatis Cibiniensis 64, no. 1 (2014): 69–75. http://dx.doi.org/10.2478/aucts-2014-0013.

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Abstract An investigation of film forming properties, electrical characteristics, optical and electroluminescence properties of a recently synthesized pyrrolo[1,2-a][1,10]phenanthroline derivatives (RA) has been reported. The results indicate that these new materials can be used for manufacturing organic devices as lightemitting diodes. Various device structure and thickness have been considered in experiments. The poly(pphenylenevinylene)- PPV has been used as transporting layer while the RA as emitting layer. Good rectification behaviour with a switch-on voltage in range of 3 V and 7 V has b

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Talanov, M. V., V. B. Shirokov, and V. M. Talanov. "Anion order in perovskites: a group-theoretical analysis." Acta Crystallographica Section A Foundations and Advances 72, no. 2 (2016): 222–35. http://dx.doi.org/10.1107/s2053273315022147.

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Anion ordering in the structure of cubic perovskite has been investigated by the group-theoretical method. The possibility of the existence of 261 ordered low-symmetry structures, each with a unique space-group symmetry, is established. These results include five binary and 14 ternary anion superstructures. The 261 idealized anion-ordered perovskite structures are considered as aristotypes, giving rise to different derivatives. The structures of these derivatives are formed by tilting ofBO6octahedra, distortions caused by the cooperative Jahn–Teller effect and other physical effects. Some deri

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Wiggins, Russell, Jihoo Woo, and Shizue Mito. "Optimizing Niclosamide for Cancer Therapy: Improving Bioavailability via Structural Modification and Nanotechnology." Cancers 16, no. 20 (2024): 3548. http://dx.doi.org/10.3390/cancers16203548.

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Inhibition of multiple cancer-related pathways has made niclosamide a promising candidate for the treatment of various cancers. However, its clinical application has been significantly limited by poor bioavailability. This review will discuss current findings on improving niclosamide bioavailability through modification of its chemical structure and utilization of novel nanotechnologies, like electrospraying and supercritical fluids, to improve drug delivery. For example, niclosamide derivatives, such as o-alkylamino-tethered niclosamide derivates, niclosamide ethanolamine salt, and niclosamid

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Todosijević, Jovana, Alexander Scherbakov, Yulia Volkova, and Vladimir Jurišić. "Investigation of the effect of steroidal imidazoheterocycles hormone derivatives on JEG-3 trophoblast cells of choriocarcinoma." Kragujevac Journal of Science, no. 43 (2021): 99–107. http://dx.doi.org/10.5937/kgjsci2143099t.

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This study aimed to examine the biological activities of unique steroid hormone derivatives-steroidal imidazoheterocycles. The activity synthesized steroidal compounds were tested for the viability of JEG-3 trophoblast cells of choriocarcinoma. The results of the MTT cytotoxicity test showed that most of the examined steroidal imidazoheterocycles act proliferatively on the JEG-3 cell line, except (E, F, and J). Antiproliferative activity of these derivates is probably influenced by different substituents at position 17-C atom in the chemical structure of the hormone and by different substituen

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Čuk, Marjeta, Matejka Bizjak, and Tanja Nuša Kočevar. "Influence of Simple and Double-Weave Structures on the Adhesive Properties of 3D Printed Fabrics." Polymers 14, no. 4 (2022): 755. http://dx.doi.org/10.3390/polym14040755.

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The double-weave structure of a fabric allows for the use of different materials and weave structures for the upper and lower layer, which can be advantageous in the functionalization of 3D printed textiles. Therefore, the aim of this research was to investigate the influence of simple and double-weave structures on the adhesion of 3D printed fabrics. From this perspective, we investigated the influence of different twill derivates and weft densities on the adhesion force. We produced fabrics specifically for this study and printed them with a polylactic acid filament using Fused Deposition Mo

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Zubyk, Halyna, Marta Plonska-Brzezinska, Olena Shyshchak, Olena Astakhova, and Michael Bratychak. "Study of Phenol-Formaldehyde Oligomers Derivatives Structure by IR- and NMR-Spectroscopy." Chemistry & Chemical Technology 9, no. 4 (2015): 435–43. http://dx.doi.org/10.23939/chcht09.04.435.

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Rivera, Jose L., Pedro Navarro-Santos, Roberto Guerra-Gonzalez, and Enrique Lima. "Interaction of Refractory Dibenzothiophenes and Polymerizable Structures." International Journal of Polymer Science 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/103945.

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We carried out first principles calculations to show that polymerizable structures containing hydroxyl (alcoholic chain) and amino groups are suitable to form stable complexes with dibenzothiophene (DBT) and its alkyl derivates. These sulfur pollutants are very difficult to eliminate through traditional catalytic processes. Spontaneous and exothermic interactions at 0 K primarily occur through the formation of stable complexes of organosulfur molecules with monomeric structures by hydrogen bonds. The bonds are formed between the sulfur atom and the hydrogen of the hydroxyl group; additional hy

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Syomin, B. V., N. A. Kazilo, O. G. Leonova, Yu L. Ivanova, Y. V. Ilyin, and V. I. Popenko. "Structures formed by the recombinant derivate of the gypsy retrovirus structural protein gag in bacterial cells." Doklady Biochemistry and Biophysics 417, no. 1 (2007): 331–33. http://dx.doi.org/10.1134/s1607672907060117.

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Socha, Pawel, Lukasz Dobrzycki, and Michal Ksawery Cyranski. "Designing two-dimensional organic–inorganic structures: piperidinium derivates of lead chlorides." Acta Crystallographica Section A Foundations and Advances 73, a2 (2017): C665. http://dx.doi.org/10.1107/s2053273317089082.

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Wu, Xinming. "Directional structure-tensor-based coherence to detect seismic faults and channels." GEOPHYSICS 82, no. 2 (2017): A13—A17. http://dx.doi.org/10.1190/geo2016-0473.1.

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Seismic coherence is widely used in seismic interpretation and reservoir characterization to highlight (with low values) faults and stratigraphic features from a seismic image. A coherence image can be computed from the eigenvalues of conventional structure tenors, which are outer products of gradients of a seismic image. I have developed a simple but effective method to improve such a coherence image by using directional structure tensors, which are different from the conventional structure tensors in only two aspects. First, instead of using image gradients with vertical and horizontal deriv

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Huang, Xiaobo, and Hui Xu. "Advances on the Bioactivities, Total Synthesis, Structural Modification, and Structure-Activity Relationships of Cytisine Derivatives." Mini-Reviews in Medicinal Chemistry 20, no. 5 (2020): 369–95. http://dx.doi.org/10.2174/1389557519666191104121821.

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Cytisine is a quinolizidine alkaloid isolated from various Leguminosae plants. Cytisine and its derivatives exhibit a broad range of biological properties, such as smoking cessation aid, antidepressant, neuroprotective, nootropic, anticancer, antiviral, antiparasitic, antidiabetic, insecticidal, and nematicidal activities. In this review, the progress of cytisine and its derivatives in regard to bioactivities, total synthesis, structural modifications focusing on their N-12 position and lactam ring is reported. Additionally, the structure-activity relationships of cytisine and its derivatives

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Mocanu, Anca Mihaela, Constantin Luca, and Alina Costina Luca. "Synthesis, Characterization and Thermal Degradation of Some New 3,5-dimethyl Pyrazole Derivatives." Revista de Chimie 68, no. 2 (2017): 317–22. http://dx.doi.org/10.37358/rc.17.2.5444.

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The purpose of this research is to synthetize, characterize and thermal degradation of new heterolytic derivates with potential biological properties. The derivates synthesis was done by obtaining new molecules with pyralozone structure which combine two pharmacophore entities: the amidosulfonyl-R1,R2 phenoxyacetil with the 3,5-dimethyl pyrazole which can have potential biological properties. The synthesis stages of the new products are presented as well as the elemental analysis data and IR, 1H-NMR spectral measurements made for elucidating the chemical structures and thermostability study wh

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Dai, J., and L. Wang. "Quantitative StructureToxicity Relationships for Derivates of Benzanilides to Daphnia magna." Bulletin of Environmental Contamination and Toxicology 65, no. 3 (2000): 366–74. http://dx.doi.org/10.1007/s001280000137.

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Dai, J., and L. Wang. "Quantitative Structure–Toxicity Relationships for Derivates of Benzanilides to Daphnia magna." Bulletin of Environmental Contamination and Toxicology 65, no. 3 (2000): 366–74. http://dx.doi.org/10.1007/s0012800137.

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Pelhate, M., and C. O. Mal�cot. "Structure-activity relationships of aminopyridines and derivates on axonal K+ conductance." Pfl�gers Archiv European Journal of Physiology 414, S1 (1989): S140—S141. http://dx.doi.org/10.1007/bf00582271.

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Dogari, Haniyeh, Reza Peymanfar, and Hossein Ghafuri. "Microwave absorbing characteristics of porphyrin derivates: a loop of conjugated structure." RSC Advances 13, no. 32 (2023): 22205–15. http://dx.doi.org/10.1039/d3ra03927g.

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do Carmo, Weberton, Gustavo de Carvalho, Juliana da Silva, Luciano Chagas, Alexandre Leitão, and Renata Diniz. "Investigation of layered double hydroxides type ZnMgAl-carbonate and derivates." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1100. http://dx.doi.org/10.1107/s2053273314088998.

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Layered double hydroxides (LDHs) or hydrotalite-like compounds belong to a class of synthetic two-dimensional inorganic materials with lamellar structures, where the hydroxyl-hydrated compounds are formed by chemical substitution of divalent ion of the brucite-like octahedral layers by trivalent ions [1]. The LDH are represented by the general formula, Figure a , where M2+, M3+ are divalent and trivalent cation and Am- is interlayer anion responsible by charge balancing, the range of divalent and trivalent ions (x) varies normally between 0.17 a 0.33. According Montanari and co-works [2] compo

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Masuno, Hiroyuki, Daisuke Morizono, Teikichi Ikura, et al. "2P032 Crystal structures of vitamin D receptor in complex with lithocholic acid derivatives(29. Protein structure and dynamics (II),Poster Session,Abstract,Meeting Program of EABS & BSJ 2006)." Seibutsu Butsuri 46, supplement2 (2006): S303. http://dx.doi.org/10.2142/biophys.46.s303_4.

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Ismailov, B. A., R. A. Sadykov, and O. V. Kim. "Hemostatic implant based on cellulose derivates." Experimental and Clinical Gastroenterology, no. 9 (March 24, 2020): 56–61. http://dx.doi.org/10.31146/1682-8658-ecg-169-9-56-61.

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Aim of research: to study the comparative effectiveness of new polycompositive of hemostatic implant on in vivo model of liver parenchymal bleeding.Material and methods. Experimental studies were performed using the developed polycompositive hemostatic implant (CPM) from cellulose derivatives. Main components of implant include: natrium carboxymethylcellulose, oxidized cellulose, nanocellulose and bonded calcium ions. In vivo experiments were conducted in both sexes white 24 utbred rats weighing 196.5 ± 2.8 grams. The animals were divided into two groups: the comparative group (n = 24) with an

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