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Relevant bibliographies by topics / 1D and 2D NMR (¹H

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Academic literature on the topic '1D and 2D NMR (¹H'

Author: Grafiati

Published: 7 June 2025

Last updated: 17 July 2025

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Journal articles on the topic "1D and 2D NMR (¹H"

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Li, Chuanjiang, Hui Wang, Manuel Juárez та Eric Dongliang Ruan. "Structural Characterization of Amadori Rearrangement Product of Glucosylated Nα-Acetyl-Lysine by Nuclear Magnetic Resonance Spectroscopy". International Journal of Spectroscopy 2014 (17 квітня 2014): 1–6. http://dx.doi.org/10.1155/2014/789356.

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Maillard reaction is a nonenzymatic reaction between reducing sugars and free amino acid moieties, which is known as one of the most important modifications in food science. It is essential to characterize the structure of Amadori rearrangement products (ARPs) formed in the early stage of Maillard reaction. In the present study, the Nα-acetyl-lysine-glucose model had been successfully set up to produce ARP, Nα-acetyl-lysine-glucose. After HPLC purification, ARP had been identified by ESI-MS with intense [M+H]+ ion at 351 m/z and the purity of ARP was confirmed to be over 90% by the relative in

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Zhuravleva, Olesya I., Maria P. Sobolevskaya, Vladimir A. Denisenko, et al. "New 6,6-Spiroketal from the Alga-Derived Fungus Penicillium Lividum." Natural Product Communications 11, no. 2 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100219.

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The new 6,6-spiroketal, sargassopenilline H (1), and known peneciraistin C (2) have been isolated from an EtOAc extract of the marine-derived fungus PenicilliumlividumKMM 4663. The structure of the new metabolite was determined by HR ESIMS and 1D and 2D NMR spectroscopy. Sargassopenilline H (1) in non-cytotoxic concentration inhibited colony formation of RPMI-7951 and MDA-MB-231 cell lines.

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W., KRAUS, MAILE R., VOGLER B., and WUNDRAK B. "1-Tigloyl-3-acetylazadirachtol, a New Limonoid from the Marrango Tree, Azadirachta excelsa Jack (Meliaceae)." Journal of Indian Chemical Society Vol. 74, Nov-Dec 1997 (1997): 870–73. https://doi.org/10.5281/zenodo.5900395.

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Department of Chemistry. University of Hohenheim. Garbenstr 30, D-70593, Stuttgart, Germany <em>Manuscript received 1 September 1997</em> The structure of a new  limonoid from the Marrango tree, <em>Azadirachta excelsa</em> Jack, has been established as 1-ticloyl-acetylazadirachtol (4) by 1D and 2D <sup>1</sup>H and <sup>13</sup>C nmr spectra.

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Shan, Wei-Guang, Yuan Wang, Lie-Feng Ma, and Zha-Jun Zhan. "A new pyrrole alkaloid from the mycelium of Inonotus obliquus." Journal of Chemical Research 41, no. 7 (2017): 392–93. http://dx.doi.org/10.3184/174751917x14967701766941.

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Inotopyrrole B, a new pyrrole alkaloid, was isolated from the mycelium of Inonotus obliquus together with two known ones, inotopyrrole and 5-(hydroxymethyl)-1 H-pyrrole-2-carboxaldehyde. The structure of the new compound was established via detailed analyses of the spectroscopic data, in particular, 1D and 2D NMR and HRESIMS.

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Wu, Zhao-Yuan, Hong-Mei Li, Yuan-Dan Li, and Rong-Tao Li. "Grayanane Diterpenoids from the Fruits of Pieris formosa." Zeitschrift für Naturforschung B 67, no. 2 (2012): 171–75. http://dx.doi.org/10.1515/znb-2012-0210.

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Four new acylated grayanane diterpenoids, pierisformosins E-H (1 - 4), together with two known ones, pierisformosins B and C (5, 6), were isolated from the fruits of Pieris formosa. The structures and relative configurations of the new compounds were elucidated by means of spectroscopic methods, including 1D and 2D NMR and mass spectrometry.

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Huang, Ting-Hong, Jie Yan, Ye-Feng Liu, Yun-Tao Xie, and Chen Jia. "Synthesis, Structural Characterisation, and Spectroscopic Properties of Copper(I) Complexes and their Applications to Dye-Sensitised Solar Cells." Australian Journal of Chemistry 68, no. 7 (2015): 1144. http://dx.doi.org/10.1071/ch14562.

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Based on the ligand 1,4-bis(2-(diphenylphophino)benzylideneamino)benzene (pbb), two complexes, [Cu2(pbb)(2,2′-bipyridine)2](BF4)2 (1) and [Cu2(pbb)(phen)2](BF4)2 (2), have been prepared and characterised by IR, 1H NMR, 31P NMR, 19F NMR, and 11B NMR spectroscopy and X-ray crystal structure analysis. Structural analysis reveals that complexes 1 and 2 contain 1D infinite chains and 2D supramolecular networks constructed by C–H···π and π···π interactions, and an ordered-layer-lattice of BF4– is located between these 2D networks. The results show that C–H···π and π···π interactions play an importan

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Zeng, Yan-Bo, Shan-Shan Ma, Zhi-Kai Guo, Bei Jiang, Wen-Li Mei, and Hao-Fu Dai. "A New Degraded Sesquiterpene from the Twigs of Trigonostemon Lutescens." Natural Product Communications 11, no. 3 (2016): 1934578X1601100. http://dx.doi.org/10.1177/1934578x1601100312.

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A new degraded sesquiterpene, tectoionol C (1), together with five known compounds wilsonol F (2), heterodendrin (3), epi-heterodendrin (4), 7-deoxogeayine (5), and 1 H-indole-3-carboxylicacid, methyl ester (6), was isolated from the twigs of Trigonostemon lutescens. Their structures were determined by spectroscopic methods including 1D and 2D NMR techniques, as well as by comparison with published data.

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Bennevault, V., C. Huin, P. Guégan, K. Evgeniya, X. P. Qiu та F. M. Winnik. "Temperature sensitive supramolecular self assembly of per-6-PEO-β-cyclodextrin and α,ω-di-(adamantylethyl)poly(N-isopropylacrylamide) in water". Soft Matter 11, № 32 (2015): 6432–43. http://dx.doi.org/10.1039/c5sm01293g.

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The host/guest interactions in water of a star polymer consisting of a β-cyclodextrin core bearing six PEO arms linked to the C<sub>6</sub> positions of β-CD (5K) and α,ω-di-(adamantylethyl)PNIPAM-12K were studied by 1D and 2D <sup>1</sup>H and <sup>13</sup>C NMR spectroscopy, isothermal calorimetry, and light scattering.

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Mzozoyana, Vuyisa, Fanie R. van Heerden, and Craig Grimmer. "Synthesis of 4-(2-fluorophenyl)-7-methoxycoumarin: experimental and computational evidence for intramolecular and intermolecular C–F···H–C bonds." Beilstein Journal of Organic Chemistry 16 (February 10, 2020): 190–99. http://dx.doi.org/10.3762/bjoc.16.22.

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4-(2-Fluorophenyl)-7-methoxycoumarin (6) was synthesized by Pechmann reaction under mild conditions via a three-step reaction. The solution-state 1H NMR spectra of 6 showed a strong intramolecular interaction between F and H5 (J FH = 2.6 Hz) and 13C NMR suggested that this C–F···H–C coupling is a through-space interaction. The 2D 19F-{1H} HOESY and 1H-{19F} 1D experiments were done to confirm this F···H interaction. The single crystal X-ray structure and the DFT-optimized structure showed that the fluorinated phenyl ring favors the orientation with the fluorine atom closer to H5 than H3. The X

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Roxin, Áron, Thomas D. MacDonald, and Gang Zheng. "Synthesis and characterization of a new natural product analog, 132-173-bacteriochlorophyllone a." Journal of Porphyrins and Phthalocyanines 18, no. 03 (2014): 188–99. http://dx.doi.org/10.1142/s1088424613501058.

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Here we show the facile synthesis of 132-173-bacteriochlorophyllone a (12), with a distinct seven-membered exocyclic F-ring formed by 132-173-cyclization of bacteriopheophorbide a(16). This is the latest reported bacteriochlorin with such an exocyclic F-ring since 1975 (132-173 cyclobacteriopheophorbide a-enol, 11), and is an analog of previously described natural exocyclic F-ring-containing porphyrins (1–4) and chlorins (5–10). The structure of 12 was confirmed using a combination of 1D 1 H NMR, 2D COSY 1 H NMR, Jmod 13 C NMR and HRMS analysis. The biological activity of 12 was explored, and

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Dissertations / Theses on the topic "1D and 2D NMR (¹H"

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Acharya, Rajendra. "Synthesis, Characterization and Photophysical Studies of Porphyrin and N-Confused Porphyrin Derivatives and Self-assembled Nano-Morphologies." University of Akron / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1376061548.

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Reichert, Detlef. "Untersuchungen zur molekularen und Spin-Dynamik in organischen Festkörpern mittels 2D-und 1D-MAS-NMR-Methoden." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=961707488.

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Santos, Maria de Fátima Costa. "Estudo fitoquímico e investigação da atividade citotóxica das folhas e cascas do caule de Guatteria pogonopus (Annonaceae)." Universidade Federal de Sergipe, 2015. https://ri.ufs.br/handle/riufs/6090.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>This paper presents the results obtained of the phytochemical bioguide of methanol extracts of the leaves and stem bark of Guatteria pogonopus Mart., a species belonging to the family Annonaceae. The botanical material (leaves and stem bark) were collected in the National Park Serra de Itabaiana (PARNA), Sergipe, Brazil. The extracts were obtained by maceration method at room temperature initially with hexane and then methanol, resulting in the hexane (EHF e EHC) and methanol (EMF e EMC) extracts, respectively. The methanol extr

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Zhang, Bo. "Multidimensional NMR Characterization of Perfluorinated Monomer and Its Precursors." University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1353075522.

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Thoma, Roland [Verfasser], Christoph [Gutachter] Janiak, and Claus A. M. [Gutachter] Seidel. "Untersuchung von Gastdiffusion in porösen Materialien mittels kernmagnetischer Resonanzspektroskopie unter Einsatz gepulster Feldgradienten (PFG-NMR) und Konformationsstudien von N,O-substituierten Hydroxamaten mittels dynamischer 1D- und 2D-NMR Methoden / Roland Thoma ; Gutachter: Christoph Janiak, Claus A. M. Seidel." Düsseldorf : Universitäts- und Landesbibliothek der Heinrich-Heine-Universität Düsseldorf, 2018. http://d-nb.info/1154307026/34.

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Doumert, Bertrand. "Apport de la RMN 1D/2D à l'étude de systèmes inorganiques boratés : caractérisation structurale du réseau vitreux borophosphate et réactivité des retardateurs de flamme APP-ZBH." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. https://pepite-depot.univ-lille.fr/ToutIDP/EDSMRE/2023/2023ULILR067.pdf.

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La spectroscopie par Résonance Magnétique Nucléaire (RMN) à l'état solide est devenue une technique incontournable pour caractériser les matériaux inorganiques oxydes. Ces dernières années, la résolution des spectres RMN a été significativement améliorée par le développement de spectromètres de plus en plus puissants. Dans le contexte Lillois, cette amélioration de la résolution a particulièrement bénéficié aux études sur les matériaux boratés synthétisés par les différentes équipes de recherche de l'université. L'objectif de cette thèse est de soutenir le développement des études par RMN sur

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Olofsson, Annelie. "Helicobacter pylori outer membrane vesicles and the host-pathogen interaction." Doctoral thesis, Umeå universitet, Institutionen för medicinsk kemi och biofysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-68744.

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Betina-Bencharif, Soumeya. "Isolement et caractérisation de saponosides extraits de deux plantes médicinales : Cyclamen africanum, Zygophyllum cornutum et évalution de leur activité anti-inflammatoire." Thesis, Dijon, 2014. http://www.theses.fr/2014DIJOPE03/document.

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L’apparition de plusieurs maladies, telles que le cancer, le diabète, l'hypertension artérielle et la propagation d'infections de type virus mutagènes peuvent être liées à la qualité et au mode de vie que nous menons aujourd’hui. En effet, plusieurs études sur les facteurs déclenchant ces maladies dites "morbides" à long ou à court terme, sont liées au stress et à la qualité des aliments consommés, qu'ils soient d'origine végétale ou animale. Ces maladies deviennent un phénomène courant, elles touchent différentes races et toutes les catégories de la société. D'après les recherches ethnobotani

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Lin, Jia-he, and 林家禾. "FPAG Realization of AGC-CR and 2D/1D Channel Equalization Techniques for DVB-T/H OFDM System." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81763864155464954067.

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碩士<br>國立中央大學<br>電機工程研究所<br>95<br>Presently Digital Video Broadcasting standard has immobile Terrestrial(DVB-T) and mobile Handheld (DVB-H) in Taiwan. For removing the multi-path channel effects, a frequency domain equalizers is usually employed in the receiver. Conventionally, the subchannel responses are estimated by using known training sequence for channel estimation. Then one-dimension interpolation techniques are used to calculate the channel responses or the equalizer coefficients of other sub-tones. In mobile environment we use conventional channel estimation and twodimension interpolat

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Reichert, Detlef [Verfasser]. "Untersuchungen zur molekularen und Spin-Dynamik in organischen Festkörpern mittels 2D-und 1D-MAS-NMR-Methoden / von Detlef Reichert." 2000. http://d-nb.info/961707488/34.

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Books on the topic "1D and 2D NMR (¹H"

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S, Brey Wallace, ed. Pulse methods in 1D and 2D liquid-phase NMR. Academic Press, 1988.

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Brey, Wallace S. Pulse Methods in 1D and 2D Liquid-Phase NMR. Elsevier Science & Technology Books, 2012.

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Jacobsen, Neil E. NMR Data Interpretation Explained: Understanding 1D and 2D NMR Spectra of Organic Compounds and Natural Products. Wiley & Sons, Incorporated, John, 2016.

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NMR Data Interpretation Explained: Understanding 1D and 2D NMR Spectra of Organic Compounds and Natural Products. Wiley & Sons, Limited, John, 2016.

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Jacobsen, Neil E. NMR Data Interpretation Explained: Understanding 1D and 2D NMR Spectra of Organic Compounds and Natural Products. Wiley & Sons, Incorporated, John, 2016.

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Jacobsen, Neil E. NMR Data Interpretation Explained: Understanding 1D and 2D NMR Spectra of Organic Compounds and Natural Products. Wiley & Sons, Incorporated, John, 2016.

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Book chapters on the topic "1D and 2D NMR (¹H"

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Guo, Qingbin, Lianzhong Ai, and Steve W. Cui. "1D & 2D and Solid-State NMR." In SpringerBriefs in Molecular Science. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-96370-9_7.

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Cornilescu, Gabriel. "1D and 2D NMR for KRAS:Ligand Binding." In Methods in Molecular Biology. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-3822-4_9.

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Lipfert, Matthias, Manoj Kumar Rout, Mark Berjanskii, and David S. Wishart. "Automated Tools for the Analysis of 1D-NMR and 2D-NMR Spectra." In NMR-Based Metabolomics. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9690-2_24.

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Viant, Mark R., Christian Ludwig, and Ulrich L. Günther. "Chapter 2. 1D and 2D NMR Spectroscopy: From Metabolic Fingerprinting to Profiling." In RSC Biomolecular Sciences. Royal Society of Chemistry, 2007. http://dx.doi.org/10.1039/9781847558107-00044.

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Duchamp, James C., Xiaoling Wu, and Kurt W. Zilm. "1D and 2D Solid State NMR of Homonuclear Systems using Magic Angle Spinning." In 25th Congress Ampere on Magnetic Resonance and Related Phenomena. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_221.

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Hemmasi, Bahram, Weiguang Zeng, Klaus Albert, and Ernst Bayer. "Structural investigation of cysteine-rich chelating peptides by 1D- and 2D-NMR spectroscopy." In Peptides. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-010-9069-8_23.

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Paff, J., B. Blümich, G. Hölz, G. G. Maresch, and V. Macho. "A Nonlinear Interferometer for Measurement of 1D and 2D Interferograms in NMR and ESR Spectroscopy." In 25th Congress Ampere on Magnetic Resonance and Related Phenomena. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-76072-3_240.

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Macedo, Anjos L., and José J. G. Moura. "1D and 2D Proton NMR Studies on [3Fe-4S] and [4Fe-4S] Ferredoxins Isolated from Desulfovibrio gigas." In Nuclear Magnetic Resonance of Paramagnetic Macromolecules. Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8573-6_15.

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Trumbo, Toni A. "Angiotensin and Oxytocin: 1D and 2D NMR of Biologically Active Peptides in a First-Semester Biochemistry Course." In ACS Symposium Series. American Chemical Society, 2007. http://dx.doi.org/10.1021/bk-2007-0969.ch015.

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Gómez, Josep, Maria Vinaixa, Miguel A. Rodríguez, Reza M. Salek, Xavier Correig, and Nicolau Cañellas. "Dolphin 1D: Improving Automation of Targeted Metabolomics in Multi-matrix Datasets of $$^1$$ 1 H-NMR Spectra." In Advances in Intelligent Systems and Computing. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19776-0_7.

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Conference papers on the topic "1D and 2D NMR (¹H"

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Singer, Gabriela, Shouxiang Mark Ma, Songhua Chen, and Mahmoud Eid. "2D Surface Roughness Quantification for Enhanced Petrophysical Applications." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210178-ms.

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Abstract Surface roughness is an essential rock parameter affecting petrophysical properties that are surface sensitive such as characterization of pore structure and wettability. For instance, Wenzel's contact angle formula for rough surfaces requires knowledge of the surface roughness, and surface roughness is expected to speed up aging of cores in crude oil for wettability restoration. In addition, proper quantification of surface roughness is critical for obtaining representative, roughness-independent, pore sizes for applications such as prediction of permeability and interpretation of ca

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Gorincioi, Elena, and Natalia Ciobanu. "Complete assignments of the 1h, 13c and 15n spectra for (+/-)-monastrol by 1D and 2D hr NMR techniques." In Conferința științifică națională cu participare internațională "Integrare prin cercetare și inovare", dedicată Zilei Internaționale a Științei pentru Pace și Dezvoltare. Moldova State University, 2025. https://doi.org/10.59295/spd2024n.80.

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The current communication reports on the use of Nuclear Magnetic Resonance (NMR) Spectroscopy for full NMR characterization of monastrol, a well-explored synthetic molecule that has demonstrated significant biological effects of suppressing the motility of the mitotic motor protein kinesin Eg5. Our work has been aimed at complete NMR characterization of the title compound, since no available data in the literature were found, presenting the full assignment of 1H, 13C and 15N nuclei in its structure. The combination of 1D and 2D HETCOR 1H-13C and 1H-15N NMR experiments spectra were employed to

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Pahomov, Valery I., Olga V. Rogova, Vladimir S. Volynkin, et al. "Distinctive features of complexation of anthracycline antibiotic daunomycin with deoxyhexanucleotide d(GCATGC) in aqueous solution: 1D- and 2D-NMR analysis." In SPIE Proceedings, edited by Galyna O. Puchkovska, Tatiana A. Gavrilko, and Olexandr I. Lizengevich. SPIE, 2004. http://dx.doi.org/10.1117/12.570008.

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Zaleska, Martina, Milena Pavlikova, Adam Pivak, Zbysek Pavlik, and Ondrej Jankovsky. "THE INFLUENCE OF 1D AND 2D CARBON NANOMATERIALS ON PROPERTIES OF MAGNESIUM OXYCHLORIDE CEMENT MORTARS." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/6.1/s26.43.

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In this study, magnesium oxychloride cement (MOC) mortars reinforced with multiwalled carbon nanotubes (MWCNT) and graphene were prepared and analyzed. The lower CO2 footprint of MOC in comparison with the production of ordinary Portland cement (OPC) predestines MOC-based materials to be an environmentally sustainable alternative to OPC. However, the wider spread of MOC is hindered by its low water resistance. The combined influence of MWCNT and graphene as 1D and 2D carbon nanomaterials on properties of MOC mortars was experimentally studied in terms of basic physical, microstructural and mec

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Zhao, Zuo An, Dai Guo Yu, Yue Wang, Xian Ran Zhao, Jin Long Wu, and Saudyono Bong. "Application of NMR T1-T2 Logs to Determine Gas in Place for Shale gas Reservoir: A Case Study in Sichuan Basin China." In Gas & Oil Technology Showcase and Conference. SPE, 2023. http://dx.doi.org/10.2118/214179-ms.

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Abstract With the domestic natural gas demand increasing, the deep Cambrain Qiongzhusi formation is becoming the new exploration target in the Sichuan basin of China. The gas in place is the key indicator to reflect the reservoir quality in the shale gas reservoir. The traditional gas-in-place estimation methods require the inputs of effective water saturation, effective porosity, total organic carbon, pore pressure, formation temperature, Langmuir isotherm experiments, etc. to estimate the free gas and adsorbed gas separately. As a new exploration target, those key parameters are not well det

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Xie, Zhen, Lizhi Xiao, Guangzhi Liao, et al. "Temperature Effects on NMR Responses in Porous Media." In 2023 SPWLA 64th Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2023. http://dx.doi.org/10.30632/spwla-2023-0105.

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Temperature affects the responses of 1D and 2D NMR spectra of fluids in porous media, which may cause errors in reservoir evaluation using downhole NMR data. The purpose of this paper is to study how temperature affects the NMR T2 spectrum and D-T2 spectrum of porous media. In this paper, the Monte Carlo-Random Walk method is used, and the simulation parameters are set according to the temperature sensitivity of surface relaxation in Korb surface relaxation theory and the temperature characteristics of bulk diffusion. The temperature response characteristics of the T2 spectrum, one-dimensional

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Gao, J., H. T. Kwak, M. Boudjatit, S. Althaus, J. Chen, and G. H. Sørland. "Novel NFDM Workflow: An Approach to NMR Data Processing for Accurate Fluid Typing and Saturation Determination." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216459-ms.

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Abstract Accurate fluid typing and quantitative saturation determination are essential to evaluate reservoir production potential, which is a well-known deliverable by NMR measurements. However, challenges remain in obtaining these critical reservoir properties due to the ill-posed nature of Inverse Laplace Transform (ILT)-based NMR data processing and partitioning of overlapping continuous T1/T2 or 2D T1T2 distributions. This work presents a straightforward and efficient data processing workflow, the NMR fluid discretization method (NFDM), based on a new discrete inversion method, Anahess. Th

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Xie, Z. Harry, Thomas Gentzis, and Humberto Carvajal-Ortiz. "MEASURING KEROGEN, SOLID ORGANICS, AND OIL PRODUCTION POTENTIALS OF UNCONVENTIONAL SOURCE ROCKS USING SOLID TYPE 20-MHZ NMR TECHNIQUES." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0094.

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It is well known that the NMR relaxation time T2 is proportional to the molecular mobility of water or hydrocarbons in rocks. In unconventional tight rocks, water and hydrocarbons are trapped in small pores of nanometer sizes, and their molecular mobility is severely restricted, causing the NMR T2 to be much shorter than that of conventional cases where pore sizes are in micrometer ranges. There are demands for advanced NMR techniques to study those solid-like bound hydrocarbons. In the meantime, it is of great interest for petrophysicists and geochemists to understand kerogen models in order

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Cabezas, L., A. Vornberger, E. Jiménez-Piqué, J. Pötschke, and L. Llanes. "Micromechanical Mapping Of High Entropy Carbide Based Hardmetals." In Euro Powder Metallurgy 2023 Congress & Exhibition. EPMA, 2023. http://dx.doi.org/10.59499/ep235765461.

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High Entropy Alloys (HEA) are materials consisting of a mixture of five or more elements in equal or relatively large proportions. They are a promising alternative material due to their desirable properties such as good wettability, high toughness, wear resistance, and temperature stability. Recently, the concept of HEAs has been extended to include high entropy carbides (HECs), which have garnered attention in the scientific community. In this study, the microstructure and micromechanical properties of two different binders, Ni and Co, were characterized for HECs composed of Ti, Ta, Nb, V, an

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Sheng, Yunglong, Danny Roberge, Taiwei Lu, and Harold Szu. "Optical wavelet matched filters." In OSA Annual Meeting. Optica Publishing Group, 1992. http://dx.doi.org/10.1364/oam.1992.fn1.

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The wavelet transform decomposes a signal onto a set of basis wavelet functions that are dilated and shifted from the mother functions h(t), satisfying an admissible condition. This transform is compact in both time and frequency domains and is therefore efficient for time-dependent frequency analysis of the signal. We consider the wavelet transform as the correlations between the signal and a bank of wavelet filters, each having a fixed scale.1 Thus, the wavelet transform of a 1D signal is implemented in an optical correlator with multiple strip wavelet filters, and the wavelet transform of a

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Reports on the topic "1D and 2D NMR (¹H"

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Joel, Daniel M., John C. Steffens, and Alfred M. Mayer. Host-Elicited Germination and Mechanism of Penetration in Broomrape (Orobanche Spp.). United States Department of Agriculture, 1993. http://dx.doi.org/10.32747/1993.7568107.bard.

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Orobanche is an important parasitic weed. For developing novel methods for its control, a thorough understanding of crucial stages of its development is needed. Therefore, the objectives of this project were characterization of Orobanche germination stimulants, analysis of mechanisms of haustorial penetration, and characterization and isolation of penetration enzymes. The first highly potent natural germination stimulant for Orobanche was isolated from sunflower and identified by high-field 1D (1H and 13C), 2D (1H-1H COSY, HMQC, HMBC)-NMR, GC.FT-IR, and GC.MS as costuslactone, a guaiane type s

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