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Статті в журналах з теми "[656.71"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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1

Khan, Momin, Ghulam Ahad, Ajmal Khan, et al. "Antiglycation Activity of N, N-Diethylthiobarbiturates Derivatives." Letters in Drug Design & Discovery 17, no. 4 (2020): 411–17. http://dx.doi.org/10.2174/1570180816666190516111516.

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Background: Previous identification of N,N-diethylthiobarbiturates as potential α-glucosidase inhibitory potential prompted us to investigate the antiglycation activity of these synthetic compounds (1-25) in order to identify the lead candidates for their possible antidiabetic potential. Methods: Synthetic compounds (1-25) were evaluated for their antiglycation activity using Bovine Serum Albumin assay (BSA). Results: Compounds exhibited varying degree of inhibition in the range of IC50 = 61.16 ± 2.3 - 656.71 ± 2.5 µM as compared to the standard rutin (IC50 = 294.5 ± 1.50 µM). Among the twenty

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2

Shifarew, Tesfaye, Tsegaye Girma Asere, Menberu Yitibarek, and Abebe Diro. "Proximate analysis and mineral contents of atella from traditional tella brewers in Jimma City, Ethiopia." Bulletin of the Chemical Society of Ethiopia 38, no. 4 (2024): 825–37. http://dx.doi.org/10.4314/bcse.v38i4.1.

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Atella is a by-product of Tella, a local brewed beverage. It is used as a food source to promote weight gain, development, and milk yield in cattle and sheep. The aim of this study was to analyze the physicochemical properties, nutritional composition, and mineral content of Atella. The samples of Atella were purposively collected from 25 Tella vendors in Jimma City, Ethiopia. The physicochemical properties and proximate analyses were performed using the AOAC method. The mineral contents of the samples were measured using flame atomic absorption spectrometry (FAAS). The results showed that the

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3

Kumar, Sumant, A. P. Singh, S. S. Solankey, et al. "Effect of Different Levels of Nitrogen and Potassium on Yield and Quality of Potato." Journal of Experimental Agriculture International 46, no. 11 (2024): 274–82. http://dx.doi.org/10.9734/jeai/2024/v46i113051.

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The research experiment was carried out at Nalanda College of Horticulture, Noorsarai during 2021-22 to find out the effect of different levels of nitrogen and potassium on the growth and yield of potatoes. Findings of research showed that among the individual nitrogen and potassium levels, N5 and K4 performed better in respect of, the number of tubers per plant (7.85 and 6.80), average tuber weight (62.28 g and 67.27 g), tuber weight per plant (656.71 g and 473.45 g), tuber yield (270.95 q/ha and 216.73 q/ha), the diameter of tuber (5.21 cm and 3.98 cm), vitamin C content in tuber (14.15 mg/1

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4

Myers, Charles W., and Taran Grant. "Anomaloglossus confusus, a New Ecuadorian Frog Formerly Masquerading as ''Colostethus'' chocoensis (Dendrobatoidea: Aromobatidae)." American Museum Novitates 3659 (August 28, 2009): 1–12. https://doi.org/10.1206/656.1.

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Myers, Charles W., Grant, Taran (2009): Anomaloglossus confusus, a New Ecuadorian Frog Formerly Masquerading as ''Colostethus'' chocoensis (Dendrobatoidea: Aromobatidae). American Museum Novitates 3659: 1-12, DOI: 10.1206/656.1, URL: http://www.bioone.org/doi/abs/10.1206/656.1

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5

Croat, Thomas B., Marco Cedeño-Fonseca, and Orlando O. Ortiz. "Revision of Monstera (Araceae: Monsteroideae) of Central America." Phytotaxa 656, no. 1 (2024): 1–197. https://doi.org/10.11646/phytotaxa.656.1.1.

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Croat, Thomas B., Cedeño-Fonseca, Marco, Ortiz, Orlando O. (2024): Revision of Monstera (Araceae: Monsteroideae) of Central America. Phytotaxa 656 (1): 1-197, DOI: 10.11646/phytotaxa.656.1.1, URL: http://dx.doi.org/10.11646/phytotaxa.656.1.1

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6

Smith, GideonF, Estrela Figueiredo, and Gerry Moore. "Increasing nomenclatural stability by preventing the introduction of long-forgotten names that will compete with ones in use: A solution must be found, and soon." Taxon 65, no. 6 (2016): 1385–90. http://dx.doi.org/10.12705/656.11.

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7

Flagg, RaymondO, GeraldL Smith, MarkA Garland, and KanchiN Gandhi. "(2481) Proposal to conserve the name Amaryllis atamasco (Zephyranthes atamasco) with that spelling (Amaryllidaceae)." Taxon 65, no. 6 (2016): 1425–26. http://dx.doi.org/10.12705/656.17.

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8

Rodda, Michele. "(2485) Proposal to reject the name Stapelia cochinchinensis (Hoya cochinchinensis) (Apocynaceae)." Taxon 65, no. 6 (2016): 1430. http://dx.doi.org/10.12705/656.21.

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9

Smith, GideonF, Estrela Figueiredo, and Gerry Moore. "(397) Proposal to introduce an Article that will limit the principle of priority by preventing the acceptance of overlooked or unrecorded names." Taxon 65, no. 6 (2016): 1442. http://dx.doi.org/10.12705/656.31.

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10

Hirai, ReginaY, Eric Schuettpelz, Layne Huiet, KathleenM Pryer, AlanR Smith, and Jefferson Prado. "Phylogeny and relationships of the neotropical Adiantum raddianum group (Pteridaceae)." Taxon 65, no. 6 (2016): 1225–35. http://dx.doi.org/10.12705/656.1.

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11

Denham, SilviaS, Lucio Zavala-Gallo, LeighA Johnson, and Ra�lE Pozner. "Insights into the phylogeny and evolutionary history of Calyceraceae." Taxon 65, no. 6 (2016): 1328–44. http://dx.doi.org/10.12705/656.7.

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12

Myers, Charles W., and Taran Grant. "Anomaloglossus confusus, a New Ecuadorian Frog Formerly Masquerading as “Colostethus” chocoensis (Dendrobatoidea: Aromobatidae)." American Museum Novitates 3659 (August 28, 2009): 1–12. http://dx.doi.org/10.1206/656.1.

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13

Hosten, Eric C., and Richard Betz. "The crystal structure of 3-ammonio-4-aminobenzoate, C7H8N2O2 – a second polymorph." Zeitschrift für Kristallographie - New Crystal Structures 236, no. 1 (2021): 187–88. http://dx.doi.org/10.1515/ncrs-2020-0510.

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14

Baril, Alain, Mélanie Whiteside, and Céline Boutin. "ANALYSIS OF A DATABASE OF PESTICIDE RESIDUES ON PLANTS FOR WILDLIFE RISK ASSESSMENT." Environmental Toxicology and Chemistry 24, no. 2 (2005): 360. http://dx.doi.org/10.1897/03-656.1.

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15

Kim, Soo-Yeon, Young-Chel Park, Kee-Joon Lee, et al. "Assessment of changes in the nasal airway after nonsurgical miniscrew-assisted rapid maxillary expansion in young adults." Angle Orthodontist 88, no. 4 (2018): 435–41. http://dx.doi.org/10.2319/092917-656.1.

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ABSTRACT Objectives: To evaluate changes in the volume and cross-sectional area of the nasal airway before and 1 year after nonsurgical miniscrew-assisted rapid maxillary expansion (MARME) in young adults. Materials and Methods: Fourteen patients (mean age, 22.7 years; 10 women, four men) with a transverse discrepancy who underwent cone beam computed tomography before (T0), immediately after (T1), and 1 year after (T2) expansion were retrospectively included in this study. The volume of the nasal cavity and nasopharynx and the cross-sectional area of the anterior, middle, and posterior segment

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16

Fu, Po-Sung, Jen-Chyan Wang, Yi-Min Wu, et al. "Impacted mandibular second molars." Angle Orthodontist 82, no. 4 (2012): 670–75. http://dx.doi.org/10.2319/102111-656.1.

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17

Ghislanzoni, Luis Tomas Huanca, Douglas Edward Toll, Efisio Defraia, Tiziano Baccetti, and Lorenzo Franchi. "Treatment and posttreatment outcomes induced by the Mandibular Advancement Repositioning Appliance; A controlled clinical study." Angle Orthodontist 81, no. 4 (2011): 684–91. http://dx.doi.org/10.2319/111010-656.1.

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18

Lohse, Konrad, Arnaud Gutierrez, and Oliver Kaltz. "EXPERIMENTAL EVOLUTION OF RESISTANCE IN PARAMECIUM CAUDATUM AGAINST THE BACTERIAL PARASITE HOLOSPORA UNDULATA." Evolution 60, no. 6 (2006): 1177. http://dx.doi.org/10.1554/05-656.1.

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19

Fathana, Adhitya, I. Nyoman Piarsa, and Putu Wira Buana. "Design of a Customer Service System Based on Video Conference Using WebRTC." Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi) 12, no. 3 (2024): 136. https://doi.org/10.24843/jim.2024.v12.i03.p01.

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Анотація:

Technological developments have changed the way customer service operates, from face-to-face interactions to more efficient digital platforms. WebRTC is emerging as a key technology in building video conferencing-based customer service systems for real-time communication and enhanced customer experience. This research focuses on developing a video conferencing system with WebRTC, through the stages of design, implementation, and testing. The results of this research show that testing on Microsoft Edge provides a total inspection time of 14,629 ms with 584.1 MB memory usage and 4.4% CPU. Meanwh

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20

Valdespino, IvánA, and Brigitte Zimmer. "Typification of selected Neotropical Selaginella (Lycopodiophyta: Selaginellaceae) taxon names and some nomenclatural innovations." Taxon 65, no. 6 (2016): 1391–408. http://dx.doi.org/10.12705/656.10.

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21

Guacchio, Emanuele Del, JohnC Manning, Bruno Menale, and Paolo Caputo. "A posy of neglected Tritonia species (Iridaceae) from the erstwhile Garden of Camaldoli (Naples, Italy)." Taxon 65, no. 6 (2016): 1409–14. http://dx.doi.org/10.12705/656.12.

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22

Katsuki, Toshio, and Hiroyuki Iketani. "Nomenclature of Tokyo cherry (Cerasus � yedoensis 'Somei-yoshino', Rosaceae) and allied interspecific hybrids based on recent advances in population genetics." Taxon 65, no. 6 (2016): 1415–19. http://dx.doi.org/10.12705/656.13.

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23

Moroni, Pablo, and Nataly O'leary. "Typification of the name Duranta mutisii (Verbenaceae)." Taxon 65, no. 6 (2016): 1420–22. http://dx.doi.org/10.12705/656.14.

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24

Arana, Marcelo Daniel, MaartenJ M. Christenhusz, and Monica Ponce. "(2479) Proposal to conserve the name Marattia kaulfussii (Eupodium kaulfussii) against M. raddiana (Marattiaceae)." Taxon 65, no. 6 (2016): 1423. http://dx.doi.org/10.12705/656.15.

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25

León, Blanca. "(2480) Proposal to conserve Campyloneurum densifolium against Polypodium ccallahualla (“P. calaguala”) (Polypodiaceae)." Taxon 65, no. 6 (2016): 1424–25. http://dx.doi.org/10.12705/656.16.

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26

Leong-Škorniková, Jana, and Otakar Šída. "(2482) Proposal to conserve the name Cheilocostus against Hellenia and Tsiana (Costaceae)." Taxon 65, no. 6 (2016): 1426–27. http://dx.doi.org/10.12705/656.18.

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27

Mart�nez-Azor�n, Mario, and ManuelB Crespo. "(2483) Proposal to conserve the name Scilla (Hyacinthaceae) with a conserved type." Taxon 65, no. 6 (2016): 1427–28. http://dx.doi.org/10.12705/656.19.

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28

Rodrigues, Rodrigo Sch�tz. "(2484) Proposal to conserve the name Saxofridericia (Rapateaceae) with that spelling." Taxon 65, no. 6 (2016): 1429–30. http://dx.doi.org/10.12705/656.20.

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29

Muharni, Muharni, Heni Yohandini, Elfita Elfita, Fitrya Fitrya, Ani Sarah, and Rifdah Nabila. "The Chemical Compounds of Flacourtia rukam Leaves and Their Inhibition of Angiotensin-converting Enzyme (ACE) Activity." Molekul 16, no. 3 (2021): 219. http://dx.doi.org/10.20884/1.jm.2021.16.3.799.

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Flacourtia rukam is a plant popular among people to treat hypertension, especially the Musi Banyuasin of south Sumatera, Indonesia. Isolation and identification of chemical compounds from F. rukam leaves and evaluation of their effects on antihypertensive activity have been conducted. Isolation of chemical compounds using chromatographic methods and identification using spectroscopic methods were compared with the reported data. The drug’s effects on antihypertension were determined using the angiotensin converting enzyme (ACE) inhibitory method. Two compounds were first reported and isolated

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30

El Abdi, Rochdi, and Irina Severin. "Tensile Characterizations of Optical Fiber Embedded in Epoxy Glass Composite." Applied Mechanics and Materials 656 (October 2014): 11–16. http://dx.doi.org/10.4028/www.scientific.net/amm.656.11.

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Photosensitive single mode optical fibers have been embedded in composite sample in order to be used in optical sensors which monitor the health of civil engineering structure.A simple composite with epoxy vinyl ester matrix reinforced with E-glass unidirectional fibers was implemented using two embedded optical fibers. Interfacial adhesion stress was determined using pull-out test and stress values are correlated to fracture mechanisms based on SEM observations.

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31

Kumar, Upendra, Binod Kumar, and Krishna Murari Pandey. "SEM and EDAX Study of Pretreated Rice Husk for the Sorption of Cu(II) from Wastewater." Applied Mechanics and Materials 656 (October 2014): 17–22. http://dx.doi.org/10.4028/www.scientific.net/amm.656.17.

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The morphological characteristics as well as important physical and chemical characteristics rice husks were evaluated by different techniques to analyze the suitability of rice husk to adsorb metal ions from water and wastewater. The raw rice husk (RRH), sodium carbonate treated rice husk (NCRH) and metal adsorbed rice husk were analyzed by SEM-EDAX study. Batch sorption kinetics studies were also conducted for Cu (II) to find the corresponding equilibrium time and the percentage removal for each of the experiment in the sorption process. The results of material characteristics and morphologi

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32

Stroe, Ion, and Andrei Craifaleanu. "Generalization of the Lagrange Equations Formalism, for Motions with Respect to Non-Inertial Reference Frames." Applied Mechanics and Materials 656 (October 2014): 171–80. http://dx.doi.org/10.4028/www.scientific.net/amm.656.171.

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The paper presents an original generalization of the Lagrange equations of the second kind, for motions with respect to reference frames in arbitrary motions. The traditional form of the equations is modified by adding certain supplementary terms. Calculation methods are presented for these terms and some conclusions useful in practical applications are drawn. For validation, the new formalism is illustrated on the application of the Foucault pendulum. The results are in full agreement with those obtained by traditional methods. The formalism can be used to determine the motions of various mec

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33

Danaila, Sterian, Delia Teleaga, and Luiza Zavalan. "Finite Volume Particle Method for Incompressible Flows." Applied Mechanics and Materials 656 (October 2014): 72–80. http://dx.doi.org/10.4028/www.scientific.net/amm.656.72.

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This paper presents an application of the Finite Volume Particle Method to incompressible flows. The two-dimensional incompressible Navier-Stokes solver is based on Chorin’s projection method with finite volume particle discretization. The Finite Volume Particle Method is a meshless method for fluid dynamics which unifies advantages of particle methods and finite volume methods in one scheme. The method of manufactured solutions is used to examine the global discretization error and finally a comparison between finite volume particle method simulations of an incompressible flow around a fixed

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34

Ungureşan, Mihaela Ligia, Vlad Mureşan, Mihail Abrudean, Iulia Clitan, and Tiberiu Coloşi. "Modeling and Simulation of the Gas Absorption Process in the Liquid Phase." Applied Mechanics and Materials 656 (October 2014): 81–94. http://dx.doi.org/10.4028/www.scientific.net/amm.656.81.

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In this paper, a solution for the modeling and simulation of the gas absorption process in a liquid is presented. In the modeling procedure, the technological process is decomposed in two sub-processes connected in series, the first sub-process being considered a lumped parameter one, respectively the second sub-process being considered a distributed parameter one. In order to simulate, with a high accuracy, a process that includes in its structure a distributed parameter sub-process, an original method based on the matrix of partial derivatives of the state vector, associated with Taylor seri

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35

Shefov, N. N., A. I. Semenov, and O. T. Yurchenko. "Empirical model of variations in 656.3-nm hydrogen emission." Geomagnetism and Aeronomy 50, no. 4 (2010): 526–35. http://dx.doi.org/10.1134/s0016793210040158.

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36

Lehtoranta, Jouni, Petri Ekholm, and Heikki Pitkänen. "Coastal Eutrophication Thresholds: A Matter of Sediment Microbial Processes." AMBIO: A Journal of the Human Environment 38, no. 6 (2009): 303–8. http://dx.doi.org/10.1579/09-a-656.1.

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37

Jimah Kwenin, William Kwajo. "Phytochemical, Proximate, Mineral Composition and Antioxidant Property of Moringa Oleifera Leaf Meal from Two Different Locations in Ghana." Sumerianz Journal of Medical and Healthcare, no. 81 (March 12, 2025): 6–17. https://doi.org/10.47752/sjmh.81.6.17.

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Moringa oleifera leaf meal (MOLM) was analyzed in triplicate to determine proximate, mineral, energy, phytochemical profile and antioxidant potential. Data was analysed using STATISTIX 9.0. and means separated by least significant difference at 5 %. Dry matter (9.50 - 9.77 %), crude protein (27.42 - 27.72 %), crude fat (4.55 - 4.65 %), crude fibre (10.37 - 10.56 %), ash (12.98 - 13.39 %), carbohydrate (34.21 - 34.74 %) and gross energy (17.77 - 17.82 MJ/kg) were recorded. Minerals determined were Ca (655.93 - 656.31 mg/kg), Fe (70.21 - 71.60 mg/kg), K (257.72 - 266.58 mg/kg), Mg (69.74 - 73.49

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38

Chen, Chuanjie, Zhongqing Fang, Xiaofang Yang, Yongsheng Fan, Feng Zhou, and Rugang Wang. "Spatial characteristics of nanosecond pulsed micro-discharges in atmospheric pressure He/H₂O mixture by optical emission spectroscopy." Chinese Physics B 31, no. 2 (2022): 025204. http://dx.doi.org/10.1088/1674-1056/ac2e62.

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Atmospheric pressure micro-discharges in helium gas with a mixture of 0.5% water vapor between two pin electrodes are generated with nanosecond overvoltage pulses. The temporal and spatial characteristics of the discharges are investigated by means of time-resolved imaging and optical emission spectroscopy with respect to the discharge morphology, gas temperature, electron density, and excited species. The evolution of micro-discharges is captured by intensified CCD camera and electrical properties. The gas temperature is diagnosed by a two-temperature fit to the ro-vibrational OH(A2Σ+–X2Π, 0–

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39

Ergezinger, Christina, Frank Weller, and Kurt Dehnicke. "Die Kristallstruktur von N,N,N'-tris(trimethylsilyl)benzamidin sowie die Synthese und Kristallstruktur von DichIorantimon-N,N'-bis(trimethylsilyl)benzamidinat." Zeitschrift für Naturforschung B 43, no. 9 (1988): 1119–24. http://dx.doi.org/10.1515/znb-1988-0906.

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Abstract N,N,N'-Tris(trimethylsilyl)benzamidine, [C6H5-C(NSiMe3)N(SiMe3)2], reacts with antimony trichloride in CH2Cl2 solution to form monomeric dichloroantimony-N,N'-bis(trimethylsilyl)- benzamidine, [SbCl2(NSiMe3)2C-C6H5]. Both benzamidine derivatives have been characterized by crystal structure determinations. [C6H5-C(NSiMe3)N(SiMe3)2]: space group P21/c, Z = 4, 2278 observed independent reflexions, R = 0,038. Lattice dimensions (19 °C): a = 1521,0(1); b = 656.7(1); c = 2163,0(1) β = 94,21(1)°. The compound forms monomeric molecules with CN distances of 126,6 pm, and 141,0 pm, respective

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40

MOHD YUSOFF, M. Z., Z. HASSAN, C. W. CHIN, et al. "THE STUDY OF Al0.29Ga0.71N-BASED SCHOTTKY PHOTODIODES GROWN ON SILICON BY PLASMA-ASSISTED MOLECULAR BEAM EPITAXY." Modern Physics Letters B 27, no. 12 (2013): 1350085. http://dx.doi.org/10.1142/s0217984913500851.

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In this paper, the growth and characterization of epitaxial Al 0.29 Ga 0.71 N grown on Si (111) by RF-plasma assisted molecular beam epitaxy (MBE) are described. The Al mole fraction was derived from the HR-XRD symmetric rocking curve (RC) ω/2θ scans of (0002) plane as x = 0.29. PL spectrum of sample has shown sharp and intense band edge emission of GaN without the existence of yellow emission band, showing that it is comparable in crystal quality of the sample when compared with previous reports. From the Raman measurement of as-grown Al 0.29 Ga 0.71 N layer on GaN / AlN / Si sample. We found

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41

SHAW, SCOTT R., and PAUL M. MARSH. "Two new Eastern North American species of the Aleiodes coxalis (Spinola) species-group (Hymenoptera: Braconidae, Rogadinae) reared from Geometridae." Zootaxa 656, no. 1 (2004): 1. http://dx.doi.org/10.11646/zootaxa.656.1.1.

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Анотація:

Two new species in the Aleiodes coxalis species-group are described from eastern North America: Aleiodes itamevorus and Aleiodes maritimus. Both are primary koinobiont parasitoids of Geometridae caterpillars, utilizing hosts from the genera Itame and Semiothisa.

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42

CROAT, THOMAS B., MARCO CEDEÑO-FONSECA, and ORLANDO O. ORTIZ. "Revision of Monstera (Araceae: Monsteroideae) of Central America." Phytotaxa 656, no. 1 (2024): 1–197. http://dx.doi.org/10.11646/phytotaxa.656.1.1.

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Анотація:

Monstera is the taxonomically least understood genus in the Araceae family in Mesoamerica. Identification is further complicated by drastic phenotypic changes from juvenile to adult stages and the precocious flowering of some species. The reliability of traditional taxonomic characters is uncertain, as they have been primarily studied in dry herbarium specimens, with their variability in natural populations and living plants remaining largely unknown. To enhance the taxonomy of Monstera, a comprehensive revision of Central America species was conducted. This involved: (1) an exhaustive literat

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43

Takaki, Setsuo. "Review on the Hall-Petch Relation in Ferritic Steel." Materials Science Forum 654-656 (June 2010): 11–16. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.11.

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Yielding of polycrystalline low carbon steel is characterized by a clear yield point followed by unstable Lüders deformation and such a yielding behavior is taken over to fine grained steel with the grain size of 1μm or less. Yield strength of ferritic steel is increased with grain refinement standing on the Hall-Petch relation. The following equation is realized up to 0.2μm grain size in the relation between yield strength y and grain size d: y [MPa]= 100+600×d[μm]-1/2. In low carbon steel, it might be concluded that the Hall-Petch coefficient (ky) is around 600MPa•μm1/2. However, the ky va

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44

Dippenaar, Rian J. "Continuous Casting of Advanced Steels of Near-Peritectic Composition." Materials Science Forum 654-656 (June 2010): 17–22. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.17.

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The automotive industry is increasingly utilizing advanced high-strength steels, primarily to reduce the mass of motor vehicles. However, many of these steels fall within the peritectic composition range, which are notoriously difficult to cast by continuous casting techniques. Against this background, a brief review is given of our current understanding of the peritectic reaction as such and the subsequent peritectic phase transformations.

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45

De Cooman, Bruno C., H. K. D. H. Bhadeshia, and Frédéric Barlat. "Advanced Steel Design by Multi-Scale Modeling." Materials Science Forum 654-656 (June 2010): 41–46. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.41.

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The present contribution highlights the approach to multi-scale steel design used at the Graduate Institute of Ferrous Technology (GIFT). Multi-scale modeling combining ab-initio methods, molecular dynamics, crystal plasticity modeling etc. enables GIFT researchers to gain a better fundamental understanding of phase and lattice stability, magnetic properties and basic mechanical constants. In addition, these methods allow for the reliable determination of critical material parameters. The opportunities for the development of new steel grade is thereby greatly enhanced and, when these new mater

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Xie, Xi Shan, and Yan Ping Zeng. "The Effect of Inclusions on Mechanical Behaviour in Ultra-High Strength Alloy Steels." Materials Science Forum 654-656 (June 2010): 51–56. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.51.

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Inclusions are un-avoidable even in super-clean engineering alloy steels because of the necessary melting process. These inclusions (such as TiN, AlN etc) are considered as harmful phases especially for ultra-high strength alloy steels. The unique experiments (in-situ tension and in-situ fatigue tests) have been conducted in a loading chamber of scanning electron microscope. TiN often characterizes with large blocky cubic morphology. Cracks easily initiate at the sharp corners of TiN cubic particles or sometimes directly initiate in TiN particles because of its brittleness. These cracks propag

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47

Qiu, Dong, and Ming Xing Zhang. "Inoculation during Metal Castings: Beyond Grain Refining." Materials Science Forum 654-656 (June 2010): 671–74. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.671.

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Inoculation is the most common grain refining technique during metal/alloy castings. However, only a small fraction, typically 1~2%, of inoculants serve as nucleation sites while most of them do not participate in the nucleation event and hence they are usually termed ‘inactive’ inoculants. But ‘inactive’ does not mean ‘useless’. Our recent studies revealed some extra merits of these ‘inactive’ particles in Mg-Al-Y cast alloys. The current results represent a new approach to microstructure design through manipulation of inoculated particles during castings.

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Adachi, Yoshitaka, and Yuan Tsung Wang. "Topology of Spheroidized Pearlite." Materials Science Forum 654-656 (June 2010): 70–73. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.70.

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Differential geometry and toplogy-based three-dimensional (3D) analysis was conducted to understand pearlite spheroidization mechanism in an eutectoid steel. Morphological change during aging below A1 tempearture was examined in terms of Gaussian(K)/mean curvatures(H), genus and Euler characteristics based on 3D images.The holes presentnaturally grown cementite lamella caused shape instability andinduced shape evolution of the lamellar structure during spheroidization. 3D visualization demonstrated that the intrinsic holes played an important role in the initiation and development of pearlites

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Mizunuma, Susumu, Takamichi Iizuka, Kazuhiro Mitsui, Hidehito Okumura, and Masahide Kohzu. "Grain Refinement of Magnesium Alloy AZ31 under Torsion Extrusion with a Square-Hole Die." Materials Science Forum 654-656 (June 2010): 711–14. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.711.

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Grain refinement and crystal orientation of magnesium alloy AZ31 under torsion extrusion with a square-hole die are investigated. The optimum temperature and ratio of the die rotation speed to the extrusion speed were clarified, resulting in uniformly distributed fine grains with sizes in the range 1- m over the entire cross section of the worked specimen. The crystal orientation of the specimen was determined by electron backscatter diffraction and compared with that of a conventionally extruded specimen. In the case of torsion extrusion, a very strong <0001> texture was observed alon

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Sato, Itsuya, Seiji Miura, and Tetsuo Mohri. "Twinning Behavior in AZ31-B Polycrystal Texture Subjected to In-Situ Bending Test." Materials Science Forum 654-656 (June 2010): 715–18. http://dx.doi.org/10.4028/www.scientific.net/msf.654-656.715.

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Анотація:

A commercial Mg alloy, AZ31B, has been used widely. In the texture of AZ31B sheet, each grain has its c-axis almost parallel to the sheet normal. Therefore, at the bending process of the sheet, basal slip system can not accommodate an in-plane plastic strain which is perpendicular to the c-axis of each grain. It is known that {10―,12} twin can be formed by applying an extension strain parallel to the c-axis, which is equivalent to the a-axis compression strain. So in the bending deformation of the AZ31B sheet with a texture microstructure, it is expected that {10―,12} twinning occurs. In this

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