Littérature scientifique sur le sujet « LNMB »

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Articles de revues sur le sujet "LNMB"

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Ma, Ming, Jeremy R. Lohman, Tao Liu et Ben Shen. « C-S bond cleavage by a polyketide synthase domain ». Proceedings of the National Academy of Sciences 112, no 33 (3 août 2015) : 10359–64. http://dx.doi.org/10.1073/pnas.1508437112.

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Leinamycin (LNM) is a sulfur-containing antitumor antibiotic featuring an unusual 1,3-dioxo-1,2-dithiolane moiety that is spiro-fused to a thiazole-containing 18-membered lactam ring. The 1,3-dioxo-1,2-dithiolane moiety is essential for LNM’s antitumor activity, by virtue of its ability to generate an episulfonium ion intermediate capable of alkylating DNA. We have previously cloned and sequenced the lnm gene cluster from Streptomyces atroolivaceus S-140. In vivo and in vitro characterizations of the LNM biosynthetic machinery have since established that: (i) the 18-membered macrolactam backbone is synthesized by LnmP, LnmQ, LnmJ, LnmI, and LnmG, (ii) the alkyl branch at C-3 of LNM is installed by LnmK, LnmL, LnmM, and LnmF, and (iii) leinamycin E1 (LNM E1), bearing a thiol moiety at C-3, is the nascent product of the LNM hybrid nonribosomal peptide synthetase (NRPS)-acyltransferase (AT)-less type I polyketide synthase (PKS). Sulfur incorporation at C-3 of LNM E1, however, has not been addressed. Here we report that: (i) the bioinformatics analysis reveals a pyridoxal phosphate (PLP)-dependent domain, we termed cysteine lyase (SH) domain (LnmJ-SH), within PKS module-8 of LnmJ; (ii) the LnmJ-SH domain catalyzes C-S bond cleavage by using l-cysteine and l-cysteine S-modified analogs as substrates through a PLP-dependent β-elimination reaction, establishing l-cysteine as the origin of sulfur at C-3 of LNM; and (iii) the LnmJ-SH domain, sharing no sequence homology with any other enzymes catalyzing C-S bond cleavage, represents a new family of PKS domains that expands the chemistry and enzymology of PKSs and might be exploited to incorporate sulfur into polyketide natural products by PKS engineering.
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Cheng, Yi-Qiang, Gong-Li Tang et Ben Shen. « Identification and Localization of the Gene Cluster Encoding Biosynthesis of the Antitumor Macrolactam Leinamycin in Streptomyces atroolivaceus S-140 ». Journal of Bacteriology 184, no 24 (15 décembre 2002) : 7013–24. http://dx.doi.org/10.1128/jb.184.24.7013-7024.2002.

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ABSTRACT Leinamycin (LNM), produced by Streptomyces atroolivaceus, is a thiazole-containing hybrid peptide-polyketide natural product structurally characterized with an unprecedented 1,3-dioxo-1,2-dithiolane moiety that is spiro-fused to a 18-member macrolactam ring. LNM exhibits a broad spectrum of antimicrobial and antitumor activities, most significantly against tumors that are resistant to clinically important anticancer drugs, resulting from its DNA cleavage activity in the presence of a reducing agent. Using a PCR approach to clone a thiazole-forming nonribosomal peptide synthetase (NRPS) as a probe, we localized a 172-kb DNA region from S. atroolivaceus S-140 that harbors the lnm biosynthetic gene cluster. Sequence analysis of 11-kb DNA revealed three genes, lnmG, lnmH, and lnmI, and the deduced product of lnmI is characterized by domains characteristic to both NRPS and polyketide synthase (PKS). The involvement of the cloned gene cluster in LNM biosynthesis was confirmed by disrupting the lnmI gene to generate non-LNM-producing mutants and by characterizing LnmI as a hybrid NRPS-PKS megasynthetase, the NRPS module of which specifies for l-Cys and catalyzes thiazole formation. These results have now set the stage for full investigations of LNM biosynthesis and for generation of novel LNM analogs by combinatorial biosynthesis.
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Zwicky, Roman. « QED-Corrections to Weak Decays ». Symmetry 13, no 11 (28 octobre 2021) : 2036. http://dx.doi.org/10.3390/sym13112036.

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Important aspects of QED-corrections to hadronic decays are reviewed with emphasis on conceptual points such as infrared divergences and structure dependence. These matter are illustrated for the e+e−→hadrons, the leptonic decay π+→ℓ+ν¯ and the semileptonic decay B→πℓ+ν¯. Aspects of structure dependence include the (non)-cancellation of hard-collinear logs (e.g., lnmℓ and lnmπ) of charged final states.
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Prckopa, Andras. « A review of : “Ten years LNMB, Ph.D. research and graduate courses of the Dutch Network of Operations Research” Edited by W.K. Klein Haneveld, O.J. Vrieze and L.M.C. Kallenberg Centrum voor Wiskunde en Informatica CW/TRACT 122. » IIE Transactions 30, no 9 (septembre 1998) : 858. http://dx.doi.org/10.1080/07408179808966534.

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Wu, Jian. « Magnetoresistance Effects for the Inhomogeneous Perovskite System of Ag Doped La0.833Na0.167MnO3 ». Applied Mechanics and Materials 110-116 (octobre 2011) : 553–58. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.553.

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The transport properties of the inhomogeneous system (1/4) Ag2O-La0.833Na0.167MnO3(LNMO/Ag) have been systematically studied. X-ray diffraction patterns show that the LNMO/Ag sample is the two-phase composite and consists of a magnetic La0.833Na0.167MnO3(LNMO) perovskite phase and a nonmagnetic Ag metal phase. The resistivity of the sample decreases dramatically with Ag added into the pure perovskite LNMO manganites. For the LNMO/Ag sample, the Curie temperatureTCis 331 ± 2 K and slightly higher than that of the LNMO sample (323 ± 2 K). Due to the dope of Ag metal, the room temperature magnetoresistance effect is enhanced significantly (from 7% for the pure LNMO manganites to 23% for the LNMO/Ag sample under a relative lower field of 0.5 T and from 37.5% for the LNMO sample to 41 % for the LNMO/Ag sample under a high field of 6 T at the temperature of 330 K. In the low temperature regime, the magnetoresistance ratio of the LNMO/Ag sample is smaller than that of the LNMO sample, which is contrary to the magnetoresistance effect in high temperature. The effects are discussed qualitatively by use of a model which is based on the relative change among the intrinsic magnetoresistance effect and the extrinsic magnetoresistance effect.
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Nisar, Umair, Joachim Bansmann, Margret Wohlfahrt-Mehrens et Peter Axmann. « Borate-Coated Co-Free LiNi0.5Mn1.5O4 : Enhanced Performance and Stability for High-Power-Density Libs ». ECS Meeting Abstracts MA2023-02, no 8 (22 décembre 2023) : 3423. http://dx.doi.org/10.1149/ma2023-0283423mtgabs.

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Cobalt free LiNi0.5Mn1.5O4 (LNMO), also known as high-voltage spinel, has emerged as a promising cathode material for high energy-density and high power-density lithium-ion batteries (LIBs), making it a viable candidate for applications in large-scale energy storage systems (ESS) and transportation (1-5). Despite its potential, LNMO faces challenges, such as rapid capacity degradation and the formation of an unstable cathode electrolyte interphase (CEI), which have impeded its commercialization(4-5). To address these issues, we present a cost-effective and scalable approach involving the application of a borate-based surface coating to LNMO (borate-LNMO). In this study, we systematically applied varying amounts of borate coating to LNMO and assessed their electrochemical performance in both half- and full-cell configurations. Initial optimization of the coating amount revealed that borate-LNMO materials exhibited superior rate capability, and enhanced stability when compared to bare LNMO. Float testing demonstrated a stable LNMO/electrolyte interface for borate-LNMO materials, in contrast to the continuous increase in leakage (parasitic current) observed with bare LNMO over time. Furthermore, borate-LNMO materials exhibited superior cycling performance in full-cell setups, both at ambient (25℃) and elevated (45℃) temperatures. This enhanced performance can be attributed to the formation of relatively stable CEI and SEI interphases, resulting in reduced electrolyte decomposition, lower transition metal dissolution at the LNMO/electrolyte interface, and minimized cross-talk between the cathode and anode. Post-mortem SEM analysis of the cycled graphite anodes revealed a thicker and denser SEI in bare LNMO cells, whereas borate-LNMO cells exhibited a thinner and porous SEI. These findings suggest that borate-coated LNMO could be a promising solution for cost-effective and high-power LIBs.
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Li, Yu, Dongsheng Wang, Yi Li, Xiaodong Liu, Dong Chen, Chentong Yuan et Yanbing Zhou. « Clinical Significance of Lymph Node Micrometastasis in pN0 Gastric Cancer Patients ». Gastroenterology Research and Practice 2021 (3 mars 2021) : 1–7. http://dx.doi.org/10.1155/2021/6854646.

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Purpose. To investigate the relationship between lymph node micrometastasis (LNMM) and clinicopathological factors and to evaluate the prognostic effects of LNMM in pN0 gastric cancer (GC) patients. Methods. One hundred and seventy-two GC patients who received radical gastrectomy with D2 lymph node dissection were enrolled in the present study. 1371 negative lymph nodes from level 2 station confirmed by pathology were examined. The LNMM was diagnosed by telomeric repeat amplification protocol/enzyme-linked immunosorbent assay (TRAP-ELISA). The relationship between clinicopathological factors and LNMM was investigated by multivariate analysis. Survival analysis was performed to evaluate the effects of LNMM on prognosis. Results. LNMM was detected in 423 lymph nodes from 72 patients. The results showed that invasion depth ( OR = 3.755 , P = 0.004 ), TNM staging ( OR = 3.152 , P = 0.002 ), lymphatic invasion ( OR = 2.178 , P = 0.009 ), and tumor differentiation ( OR = 1.266 , P = 0.013 ) were independent risk factors associated with LNMM. Survival analysis showed that patients with LNMM had significantly worse 5-year survival compared with those without LNMM (42% vs. 76.4%, P < 0.05 ). Multivariate analysis demonstrated that LNMM, tumor size, Lauren type, invasion depth, and lymphatic invasion ( P < 0.05 ) were independently factors associated with 5-year survival. Conclusions. The findings showed that tumor invasion depth, TNM staging, lymphatic invasion, and tumor differentiation were independent risk factors associated with LNMM occurrence. Moreover, LNMM is a clinically negative prognostic factor in pN0 GC patients.
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Yi, Kang, Qingkai Tang, Zhiwei Wu et Xinhua Zhu. « Unraveling the Structural, Dielectric, Magnetic, and Optical Characteristics of Nanostructured La2NiMnO6 Double Perovskites ». Nanomaterials 12, no 6 (16 mars 2022) : 979. http://dx.doi.org/10.3390/nano12060979.

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Double perovskite La2NiMnO6 (LNMO) nanoparticles and nanorods were synthesized via a hydrothermal process, where only aqueous inorganic solvents are used to regulate the microscopic morphology of the products without using any organic template. They crystallized in a monoclinic (P21/n) double perovskite crystal structure. The LNMO nanoparticles exhibited spherical morphology with an average particle size of 260 ± 60 nm, and the LNMO nanorods had diameters of 430 ± 120 nm and length about 2.05 ± 0.65 μm. Dual chemical oxidation states of the Ni and Mn ions were confirmed in the LNMO samples by X-ray photoelectron spectroscopy. Strong frequency dispersion dielectric behavior observed in the LNMO ceramics, is attributed to the space charge polarization and the oxygen vacancy induced dielectric relaxation. A ferroelectric—paraelectric phase transition appearing near 262 K (or 260 K) in the LNMO ceramics prepared from nanoparticles (or nanorods) was identified to be a second-order phase transition. The LNMO samples are ferromagnetic at 5 K but paramagnetic at 300 K. The LNMO nanoparticles had larger saturation magnetization (MS = 6.20 μB/f.u. @ 5 K) than the LNMO nanorods (MS = 5.68 μB/f.u.) due to a lower structural disorder in the LNMO nanorods. The semiconducting nature of the nanostructured LNMO with an optical band gap of 0.99 eV was revealed by the UV–visible absorption spectra. The present results enable the nanostructured LNMO to be a promising candidate for practical spintronic devices.
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Lohan, Manja, Frédéric Justaud, Heinrich Lang et Claude Lapinte. « Synthesis, Spectroelectrochemical, and EPR Spectroscopic Studies of Mixed Bis(alkynyl)biferrocenes of the Type (LnMC≡C)(LnM′C≡C)bfc ». Organometallics 31, no 9 (24 avril 2012) : 3565–74. http://dx.doi.org/10.1021/om300050t.

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Kathamuthu, Gokul Raj, Rathinam Sridhar, Dhanaraj Baskaran et Subash Babu. « Dominant expansion of CD4+, CD8+ T and NK cells expressing Th1/Tc1/Type 1 cytokines in culture-positive lymph node tuberculosis ». PLOS ONE 17, no 5 (26 mai 2022) : e0269109. http://dx.doi.org/10.1371/journal.pone.0269109.

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Lymph node culture-positive tuberculosis (LNTB+) is associated with increased mycobacterial antigen-induced pro-inflammatory cytokine production compared to LN culture-negative tuberculosis (LNTB-). However, the frequencies of CD4+, CD8+ T cells and NK cells expressing Th1/Tc1/Type 1 (IFNγ, TNFα, IL-2), Th17/Tc17/Type 17 (IL-17A, IL-17F, IL-22) cytokines and cytotoxic (perforin [PFN], granzyme [GZE] B, CD107a) markers in LNTB+ and LNTB- individuals are not known. Thus, we have studied the unstimulated (UNS) and mycobacterial antigen-induced frequencies of CD4+, CD8+ T and NK cells expressing Th1, Th17 cytokines and cytotoxic markers using flow cytometry. The frequencies of CD4+, CD8+ T and NK cells expressing cytokines and cytotoxic markers were not significantly different between LNTB+ and LNTB- individuals in UNS condition. In contrast, upon Mtb antigen stimulation, LNTB+ individuals are associated with significantly increased frequencies of CD4+ T cells (PPD [IFNγ, TNFα], ESAT-6 PP [IFNγ, TNFα], CFP-10 PP [IFNγ, TNFα, IL-2]), CD8+ T cells (PPD [IFNγ], ESAT-6 PP [IFNγ], CFP-10 PP [TNFα]) and NK cells (PPD [IFNγ, TNFα], ESAT-6 PP [IFNγ, TNFα], CFP-10 PP [TNFα]) expressing Th1/Tc1/Type 1, but not Th17/Tc17/Type 17 cytokines and cytotoxic markers compared to LNTB- individuals. LNTB+ individuals did not show any significant alterations in the frequencies of CD4+, CD8+ T cells and NK cells expressing cytokines and cytotoxic markers compared to LNTB- individuals upon HIV Gag PP and P/I antigen stimulation. Increased frequencies of CD4+, CD8+ T and NK cells expressing Th1/Tc1/Type 1 cytokines among the LNTB+ group indicates that the presence of mycobacteria plays a dominant role in the activation of key correlates of immune protection or induces higher immunopathology.
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Thèses sur le sujet "LNMB"

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Dumaz, Philippe. « Comportement électrochimique de matériaux à haut potentiel : LiCoPO4 et LiNi1/3Mn3/2O4, en électrodes couches minces ou composites ». Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAI095/document.

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L'utilisation de sources naturelles illimitées telles que l'énergie solaire, éolienne ou hydraulique est en plein essor. Cependant leurs productions énergétiques sont fortement liées aux conditions climatiques et sont donc intermittentes. Ces systèmes nécessitent donc d'être associés à du stockage d'énergie, afin de lisser la production avant injection sur le réseau. Pour toutes ces raisons, les batteries Li-ion doivent intégrer de nouveaux matériaux d'électrode permettant d'obtenir une grande puissance et une haute densité d'énergie, tout en conservant une durée de vie élevée et une sécurité d'utilisation.Dans ce contexte, notre travail a consisté à préparer des matériaux à hauts potentiels, le LiCoPO4 (LCP) et le LiNi0.5Mn1.5O4 (LNMO). Ces derniers s'inscrivent parfaitement dans le contexte de développement de matériaux à haute densité d'énergie puisqu'ils possèdent des potentiels d'oxydation de 4,8 et 4,7 V vs Li +/Li et des densités d'énergies massiques théoriques de 802 et 691 Wh.kg-1 par rapport au lithium, respectivement.Ces matériaux ont d'abord été synthétisés sous forme de couches minces afin d'obtenir des électrodes modèles pour étudier de manière fondamentale les propriétés de transport des matériaux et ses interactions en présence d'un électrolyte liquide notamment les phénomènes à l'interface électrode/électrolyte. La compréhension des matériaux acquise au cours de ce premier axe a permis de transposer et d'adapter ces techniques de caractérisation aux systèmes plus complexes que sont les électrodes composites.Les propriétés de ces matériaux vis-à-vis de l'insertion et la désinsertion du lithium ont ensuite été testées et caractérisées en cellules électrochimiques. De nombreux paramètres cinétiques et thermodynamiques ont été extrait grâce à plusieurs techniques électrochimiques telles que la titration intermittente (GITT), la spectroscopie d'impédance (PEIS et GEIS), le cyclage galvano-statique et les tests de puissance. Nous proposons d'ailleurs une méthode simple, à partir de ces tests de puissance, pour déterminer le coefficient de diffusion du lithium. Enfin, nous tentons de répondre à plusieurs questions qui demeurent en suspens concernant la cyclabilité et la perte de capacité de ces matériaux à haut potentiel au cours de cyclage long et nous proposons une technique très simple permettant d'améliorer de façon étonnamment efficace la cyclabilité d'électrodes composites de LNMO
The use of unlimited natural sources such as solar, wind or hydraulic power is booming. However, their energy production is dependant of climatic conditions and is therefore intermittent. These systems are usually associated with energy storage, in order to smooth the production before injection on the network. For all these reasons, Li-ion batteries need to incorporate new electrode materials to achieve high power and high energy density while maintaining a long life and safe use.In this context, our work consisted in preparing high potential materials, LiCoPO4 (LCP) and LiNi0.5Mn1.5O4 (LNMO). The latter are perfectly integered in the context of development of materials with high energy density since they have an oxidation potential of 4.8 and 4.7 V vs Li + / Li and theoretical mass energy densities of 802 and 691 Wh.kg-1 over lithium, respectively.These materials were first synthesized in the form of thin thin films to obtain model electrodes to study the kinetics and thermodynamics properties of materials transport and interactions with the presence of a liquid electrolyte including phenomena at the electrode interface / electrolyte. The understanding acquired during this first axis allowed us to transpose and adapt these characterization techniques to more complex systems : composite electrodes.The properties of these materials with respect to lithium insertion and desinsertion have been tested and characterized in electrochemicals cells. Kinetic and thermodynamic parameters have been extracted using several electrochemical techniques such as intermittent titration (GITT), impedance spectroscopy (PEIS and GEIS), galvano-static cycling and power tests. We propose a simple method, based on power tests, to determine the diffusion coefficient of lithium. Finally, we attempt to answer several questions that remain unsolved about the capacity loss of high potential materials during long cycling, and we propose a very simple technique for improving the cycling of composites electrodes of LNMO
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Штанько, Д. Г. « Система живлення високочастотних BUC і LNB на основі застосування універсального інжектора ». Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86600.

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Дипломний проект на тему "Система живлення високочастотних BUCі LNB на основі застосування універсального інжектора" складається зі вступу, основної частини із чотирьох розділів, висновків, переліку літератури, додатків. Загальний обсяг роботи становить 84 сторінок. Перелік списку літератури складається з 44 найменувань. Мета роботи – аналіз особливостей розробки та практичної реалізації системи живлення високочастотних BUC/LNB. Об’єкт дослідження – проектування системи живлення високочастотних BUC/LNB за допомогою універсального інжектора. Предмет дослідження – особливості застосування засобів математичного моделювання для реалізації клієнт-орієнтованих систем на базі методів САПР. Наукова новизна одержаних результатів. Результати дослідження пропонують альтернативний метод застосування універсального інжектору постійного струму в процесі розробки системи живлення високочастотних BUC/LNB. Практичне значення одержаних результатів полягає в тому, що дослідження ґрунтується на результатах поглибленого вивчення особливостей застосування універсального інжектору постійного струму в процесі розробки системи живлення високочастотних BUC/LNB для засобів супутникового зв’язку.
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Salian, Girish Dayanand. « Fabrication and characterization of thin-film microbatteries based on self-organized titania nanotubes ». Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0396/document.

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Un nanotube de dioxyde de titane autoporteur (TiO2 nts) est exploré en tant qu’électrode négative potentielle pour les microbatteries Li-ion 3D. Différentes modifications chimiques du TiO2 ont été explorées et étudiées, comme le TiO2 allié au Nb, le TiO2 revêtu d'ALD-Al2O3, le titanate de lithium-TiO2 et le TiO2 sulfuré. Le dépôt d'électrolyte polymère à base de PEO (oxyde d'éthylène) (PMMA-PEG) portant le sel de LiTFSI dans du TiO2 a été obtenu par la réaction d'électropolymérisation sur l'anode TiO2 et la cathode Lithum nickel oxyde de manganèse (LNMO). L'objectif principal ici était d'exploiter la surface active des électrodes par électrodéposition et d'améliorer ainsi l'interface électrode-électrolyte. Une telle micro-batterie contenant des électrodes revêtues de polymère révèle que les valeurs de capacité obtenues à différents taux de C sont doublées lorsque les électrodes sont complètement remplies par l'électrolyte polymère par rapport à la micro-batterie à électrodes brutes. Les excellentes performances électrochimiques sont attribuées aux interfaces électrode-électrolyte améliorées dans les deux électrodes
Self-supported titanium dioxide nanotube (TiO2 nts) is explored as a potential negative electrode for 3D Li-ion microbatteries. Different chemical modifications on the TiO2 nts have been explored and studied like Nb-alloyed TiO2 nts, ALD-Al2O3 coated TiO2 nts, Lithium titanate-TiO2 nts and sulphurized TiO2 nts. The deposition of PEO (polyethylene oxide) based polymer electrolyte (PMMA-PEG) carrying LiTFSI salt into TiO2 nts has been achieved by the electropolymerization reaction on the TiO2 nts anode and the Lithum nickel manganese oxide (LNMO) cathode. The main aim here was to exploit the active surface area of the electrodes using electrodeposition and there by enhance the electrode-electrolyte interface. Such a microbattery containing polymer-coated electrodes reveal that the capacity values obtained at different C-rates are doubled when the electrodes are completely filled by the polymer electrolyte compared with the microbattery with the raw electrodes. The excellent electrochemical performance is attributed to the improved electrode-electrolyte interfaces in both the electrodes
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Stoll, Andreas Christian [Verfasser], et M. J. [Akademischer Betreuer] Hoffmann. « Ru-/Ti-substituierter LNMO-Spinell als positives Elektrodenmaterial für Li-Ionen-Batterien – Degradationsprozesse und ergänzende Strukturaufklärung / Andreas Christian Stoll ; Betreuer : M. J. Hoffmann ». Karlsruhe : KIT-Bibliothek, 2020. http://d-nb.info/121003347X/34.

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Morales, Murillo Esteban. « Síntesis, Caracterización y Estudio de Resonancia Plasmónica de Superficie de Nanopartículas Core-Shell : Au-Pt y Ag-Au ». Thesis, Universidad de las Américas Puebla, 2010. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/morales_m_e/.

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C��rdenas, D��valos Lucero Arantxa. « Caracterizaci��n y estabilidad de los aceites esenciales de or��gano nanoencapsulados por nanoemulsiones para su acci��n antimicrobiana en carne cruda ». Thesis, Universidad de las Am��ricas Puebla, 2012. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/cardenas_d_la/.

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Carvajal, Rossainz Christian Gerardo. « Efecto de la incorporaci��n de Eu+3 en las propiedades optoelectr��nicas de nanopart��culas de TiO2 ». Thesis, Universidad de las Am��ricas Puebla, 2011. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/carvajal_r_cg/.

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En el presente trabajo de tesis se realiz�� la s��ntesis de nanopart��culas de TiO2 dopadas y no dopadas con Europio (Eu+3), se utiliz�� el m��todo de sol-gel variando las condiciones de reacci��n con el fin de establecer los par��metros m��s apropiados para controlar su tama��o y dispersi��n. Se estudi�� la relaci��n entre sus condiciones de s��ntesis y dopaje con sus propiedades optoelectr��nicas. Es importante mencionar que el control sobre la morfolog��a, tama��o, y fase cristalina es de vital importancia para determinar las posibles propiedades del producto que posteriormente influyen sus aplicaciones tecnol��gicas. La hidr��lisis controlada de but��xido de titanio favorece la s��ntesis de las nanopart��culas de TiO2 dopadas y no dopadas con europio (Eu) a diferentes porcentajes molares, se observ�� que el porcentaje molar de dopaje influye en el tama��o final de las NPs. Es importante mencionar que el m��todo utilizado para el dopaje involucra m��nimas cantidades de reactivos con el fin de evitar la formaci��n de productos no deseados y contaminaci��n del material de inter��s.
(cont.) Las NPs obtenidas resultaron en una estructura amorfa y fueron tratadas t��rmicamente a determinadas temperaturas en aire para inducir la fase cristalina anatasa. Las nanoparticulas de TiO2 dopadas con Eu fueron sometidas a estudio de fotoluminiscencia (PL) con el objetivo de determinar los efectos del dopante sobre las propiedades optoelectr��nicas y evaluar sus posibles aplicaciones tecnol��gicas, su caracterizaci��n fue realizada mediante microscop��a SEM para la evaluaci��n del tama��o y morfolog��a de las NPs dopadas y no dopadas, se llev�� a cabo la caracterizaci��n por EDS para estudiar su composici��n de manera cualitativa y cuantitativa, la caracterizaci��n estructural por difracci��n de rayos X y espectroscopia Raman, y la evaluaci��n de sus propiedades optoelectr��nicas se realiz�� por medio de espectroscopia de fotoluminiscencia PL. Los resultados de todas las pruebas se discuten en el presente trabajo. Finalmente, este trabajo de investigaci��n consiste en la preparaci��n y caracterizaci��n de las nanoparticulas de TiO2 dopadas y no dopadas llevando a cabo procedimientos sencillos y econ��micos para promover sus usos m��s populares
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López, Vázquez Ciro. « Preparación de Nanopartículas de ferritas magnéticas y su funcionalización superficial con polímeros (PEG y TREG) para su evaluación como agentes de contraste en imagenología de resonancia magnética nuclear (MRI) ». Thesis, Universidad de las Américas Puebla, 2012. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/lopez_v_c/.

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Se sintetizaron exitosamente nanopartículas magnéticas por el método de descomposición térmica, utilizando dos diferentes polioles. Los polioles empleados son el agente de recubrimiento, ayudando a estabilizarlas y a determinar la morfología de las nanopartículas. La estructura y la morfología de las nanopartículas fueron analizadas utilizando FTIR, SEM, TEM, DRX y DLS. Su función como agentes de contraste en imagenología de resonancia magnética nuclear, fue evaluada utilizando un equipo médico de resonancia de 1.5 T. Los resultados muestran que las nanopartículas sintetizadas son monodispersas, superparamagnéticas, biocompatibles en los modelos estudiados en este trabajo de investigación y tienen una posible aplicación como agentes de contraste en imagenología de resonancia magnética nuclear. ABSTRACT Magnetic nanoparticles were synthesized by thermal decomposition method, using two different polyols. Polyols are used as coating agents, helping determining nanoparticles stability and morphology. The structure and morphology of the nanoparticles were studied using FTIR, SEM, TEM, DRX and DLS. Their function as MRI contrast agents was studied using a 1.5 T MRI equipment. The results show that the produced nanoparticles are monodisperse, superparamagnetic, biocompatible for the studied models and a potential use as contrast agents in MRI techniques.
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Alamilla, Peralta German. « Transistores de película delgada sobre substratos flexibles ». Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/alamilla_p_g/.

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El desarrollo de la electrónica flexible ha sido posible gracias al uso de substratos flexibles. Los circuitos electrónicos construidos sobre estos substratos tienen un gran potencial para un gran número de aplicaciones incluyendo pantallas, celdas solares, dispositivos móviles, textiles, inclusive implantes compatibles con biosistemas. Sin embargo, los substratos flexibles no son completamente compatibles con los procesos existentes de microfabricación debido a las altas temperaturas que se utilizan. Para solucionar el problema es necesario el uso de semiconductores policristalinos o amorfos, depositados a bajas temperaturas, el desarrollo de nuevas técnicas de microfabricación, nuevos materiales, con el fin de lograr un buen funcionamiento del dispositivo. Los transistores de película delgada comúnmente se fabrican con silicio amorfo hidrogenado (a-Si:H) a temperaturas menores o iguales a 300ºC. Sin embargo la movilidad de los portadores de corriente de este material es de aproximadamente 1 cm2/Vs. Materiales amorfos, como el silicio-germanio amorfo hidrogenado (a-SiGe:H), son una alternativa para resolver el problema de la movilidad y de la temperatura. Trabajos realizados en el INAOE han demostrado que la movilidad de los portadores de carga se incrementa sin aumentar la temperatura de depósito. Se busca fabricar TFT´s de a-SiGe:H sobre teflón (Polytetraflouroethylene) y PEN (Polyethylene naphthalate) a bajas temperaturas y obtener sus propiedades eléctricas.
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Cuahtecontzi, Delint Rosalía. « Estudio de Toxicidad de Nanopartículas de CeO2 en Diferentes Sistemas Biológicos ». Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lnm/cuahtecontzi_d_r/.

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Toxicity of cerium oxide nanoparticles was tested in different biological models such as prokaryotic (Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis spores), eukaryotic yeast, germination radicle and development of Lactuca sativa seed as well as damage to human leukocyte DNA. The nanoparticles were sonicated at different pH values and time, and then mixed with three different surfactants (i.e. PVP Polyvinylpyrrolidone, Triton X114 and Tween 80) at 0.002% v/v. It was found that sonication enhanced colloidal dispersion and produced an average particle size of 400 nm. The material was toxic to E. coli at pH 7 when sonicated and M9 minimal media was used. The toxic effect on minimal media increased when non-ionic surfactants were added. The use of CeO2 plus surfactant improved the minimal inhibitory concentration (MIC) against E. coli using Tween 80. The most striking effect occurred with this surfactant resulting in a MIC value of 0.150 mg mL-1 compared to 3 mg mL-1 of cerium oxide alone. Regarding the germination model, it was found that the toxic concentration was 0.5 mg mL-1. At this concentration germination was observed, but not radicle growth. It was found that leukocyte DNA was affected in a concentration of 1 mg mL-1for the tested nanoparticles in all tested conditions. These findings suggest the importance of the different factors interacting with the nanoparticles, such as surfactants, particle size, synthesis method, the physical chemistry of nanomaterials and the type of test organisms can affect in different ways the distinct prokaryotic and eukaryotic and lead to an unexpected toxic effect in materials considered as innocuous. In consequence, in the future this could affect the environment and microscopic and macroscopic organisms.
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Livres sur le sujet "LNMB"

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Klein Haneveld, Willem K., 1944-, Vrieze O. J, Kallenberg L. C. M et Dutch Network of Operations Research., dir. Ten years LNMB : Ph. D. research and graduate courses of the Dutch Network of Operations Research. Amsterdam, Netherlands : Centrum voor Wiskunde en Informatica, 1997.

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Klein Haneveld, Willem K., 1944-, Vrieze O. J, Kallenberg L. C. M et Dutch Network of Operations Research., dir. Ten years LNMB : Ph. D. research and graduate courses of the Dutch Network of Operations Research. Amsterdam, Netherlands : Centrum voor Wiskunde en Informatica, 1997.

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Dēlin̦a, Guna. LNB : National Library of Latvia. Riga, Latvia : National Library of Latvia, 2000.

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Slacik, Anne. Anne Slacik : Mallarmé, LNB, l'Avril : peintures 2010-2011. [Roche-la-Molière] : IAC, 2011.

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Moore, Marc, Sorana Froda et Christian Léger, dir. Mathematical statistics and applications. Beachwood, OH : Institute of Mathematical Statistics, 2003. http://dx.doi.org/10.1214/lnms/1215091920.

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Moore, Marc, Sorana Froda et Christian Léger, dir. Mathematical statistics and applications. Beachwood, OH : Institute of Mathematical Statistics, 2003. http://dx.doi.org/10.1214/lnms/1215091920.

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Romanyshyn, I︠U︡ O., M. Radchenko, Kh Bilas et Lʹvivsʹka naukova biblioteka Ukraïny im. V. Stefanyka. Kataloh hazet 1990-2000 rr : Za materialamy viddilu periodychnykh vydanʹ LNB im. V. Stefanyka NAN Ukraïny. Lʹviv : Lʹvivsʹka naukova biblioteka im. V. Stefanyka NAN Ukraïny, 2001.

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Pysʹmenna, O. B. Rukopysy ta pershodruky muzychnykh tvoriv Mykhaĭla Verbyt︠s︡ʹkoho (iz fondiv LNB im. V. Stefanyka NAN Ukraïny) : Notohrafichnyĭ pokaz︠h︡chyk. Lʹviv : Lʹvivsʹka naukova biblioteka im. V. Stefanyka NAN Ukraïny, 2004.

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W.k.k. Ed Haneveld. Ten Years Lnmb Phd Research and Grad Cours. Centrum Voor Wiskunde En Info, 1997.

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Baraitser, Michael. Dysmorphology Photo Library on CD-ROM & Lndb 3.5". Oxford University Press, 1996.

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Chapitres de livres sur le sujet "LNMB"

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Lewis, Moira, Courtenay Norbury, Rhiannon Luyster, Lauren Schmitt, Andrea McDuffie, Eileen Haebig, Donna S. Murray et al. « LNNB ». Dans Encyclopedia of Autism Spectrum Disorders, 1757. New York, NY : Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4419-1698-3_100826.

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Leung, Alexander K. C., William Lane M. Robson, Carsten Büning, Johann Ockenga, Janine Büttner, Hartmut Schmidt, Antonio V. Delgado-Escueta et al. « LNB ». Dans Encyclopedia of Molecular Mechanisms of Disease, 1206. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_7516.

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Sherwood, Amanda R., Vikas V. Dukhande, Matthew S. Gentry, Sarah Sullivan, Weiguo Zhang, John H. White, Mario R. Calderon et al. « LNB-TM7 Receptors ». Dans Encyclopedia of Signaling Molecules, 1025. New York, NY : Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0461-4_100708.

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Adachi, Sadao. « a-Indium Antimonide (a-lnSb) ». Dans Optical Constants of Crystalline and Amorphous Semiconductors, 711–14. Boston, MA : Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-5247-5_71.

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Shang, Li, Yuze Zhang et Bo Huang. « Palmprint Recognition Utilizing Modified LNMF Method ». Dans Lecture Notes in Computer Science, 377–88. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4742-3_31.

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Golden, Charles J., et Gregory J. Boyle. « Legacy Test Batteries : Luria–Nebraska Neuropsychological Battery (LNNB) ». Dans The SAGE Handbook of Clinical Neuropsychology : Clinical Neuropsychological Assessment and Diagnosis, 329–42. 1 Oliver's Yard, 55 City Road London EC1Y 1SP : SAGE Publications Ltd, 2023. http://dx.doi.org/10.4135/9781529789539.n22.

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Oh, Hyun Jun, Kyoung Mu Lee, Sang Uk Lee et Chung-Hyuk Yim. « Occlusion Invariant Face Recognition Using Selective LNMF Basis Images ». Dans Computer Vision – ACCV 2006, 120–29. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11612032_13.

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Aubineau-Lanièce, I., P. Avilés Lucas, J. M. Bordy, B. Chauvenet, D. Cutarella, G. Douysset, J. Gouriou et J. Plagnard. « Absorbed Dose Reference for LDR Brachytherapy the LNE-LNHB Approach ». Dans IFMBE Proceedings, 833–39. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03474-9_234.

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Li, Min. « LNPB : A Light Node for Public Blockchain with Constant-Size Storage ». Dans Lecture Notes in Computer Science, 487–98. Singapore : Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-4755-3_42.

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Stein, Charles, Persi Diaconis, Susan Holmes et Gesine Reinert. « Use of exchangeable pairs in the analysis of simulations ». Dans Institute of Mathematical Statistics Lecture Notes - Monograph Series, 1–25. Beachwood, Ohio, USA : Institute of Mathematical Statistics, 2004. http://dx.doi.org/10.1214/lnms/1196283797.

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Actes de conférences sur le sujet "LNMB"

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Wagner, Gerard, Marc Desaules et Fabien Droz. « Low noise master oscillator LNMO ». Dans 2014 European Frequency and Time Forum (EFTF). IEEE, 2014. http://dx.doi.org/10.1109/eftf.2014.7331517.

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Bai, Xiaoming, et Chengzhang Wang. « LNMF Learning for color face recognition ». Dans 2010 2nd International Conference on Future Computer and Communication. IEEE, 2010. http://dx.doi.org/10.1109/icfcc.2010.5497317.

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Bai, Xiaoming, et Chengzhang Wang. « Modified LNMF based color face recognition ». Dans 2010 Sixth International Conference on Natural Computation (ICNC). IEEE, 2010. http://dx.doi.org/10.1109/icnc.2010.5583671.

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Shang, Li, Yan Zhou, Jie Chen et Zhanli Sun. « Image Denoising Using a Modified LNMF Algorithm ». Dans 2012 International Conference on Computer Science and Service System (CSSS). IEEE, 2012. http://dx.doi.org/10.1109/csss.2012.458.

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Zhou, Changjun, Qiang Zhang, Xiaopeng Wei et Chunguang Bai. « LNMF-based Image Reconstruction for Face Recognition ». Dans 2008 IEEE International Conference on Networking, Sensing and Control (ICNSC). IEEE, 2008. http://dx.doi.org/10.1109/icnsc.2008.4525434.

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Zhang, Bin, Zhenyu Song, Wenjing Zhang, Xiaoying Shuai et Jin Qian. « An Improved LNMF Approach for Palmprint Recognition ». Dans 2021 IEEE International Conference on Software Engineering and Artificial Intelligence (SEAI). IEEE, 2021. http://dx.doi.org/10.1109/seai52285.2021.9477546.

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Wu, Menglu, et Tongwei Lu. « Face Recognition Based on LBP and LNMF Algorithm ». Dans 2016 15th International Symposium on Parallel and Distributed Computing (ISPDC). IEEE, 2016. http://dx.doi.org/10.1109/ispdc.2016.61.

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Wang, Chi-Luen, P. K. Ghosh, Q. Wang Song et P. G. Kornreich. « Metal-CdTe-lnSb Self Elecro-Optic Switching Device ». Dans Spatial Light Modulators and Applications. Washington, D.C. : Optica Publishing Group, 1990. http://dx.doi.org/10.1364/slma.1990.tuc3.

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We have built and tested a nonlinear etalon consisting of an epitaxial CdTe film grown on a single crystalline highly polished InSb wafer. The CdTe film was covered with a 10 nm thick aluminum film. Both the metal film and the polished InSb substrate act as mirrors. They form the optical cavity of the etalon.
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Zhao, Mingliang, Weiwei Jiang, Jiting Han, Zhiyu Song, Shuai Guo, Xiu Liu, Dan Zhang et Shaobo Lu. « Study on The Thermal Operation Characteristics of LNAB Swirl Burner ». Dans 2022 9th International Forum on Electrical Engineering and Automation (IFEEA). IEEE, 2022. http://dx.doi.org/10.1109/ifeea57288.2022.10037970.

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Baxter, G. W., Y. He et B. J. Orr. « A pulsed, injection-seeded optical parametric oscillator system based on periodically poled lithium niobate for high-resolution spectroscopy ». Dans The European Conference on Lasers and Electro-Optics. Washington, D.C. : Optica Publishing Group, 1998. http://dx.doi.org/10.1364/cleo_europe.1998.cfh3.

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Optical parametric oscillator (OPO) and amplifier (OPA) devices are recognised as versatile coherent tunable spectroscopic sources. This is borne out by our previous work on OPOs based on bulk (3-barium borate (BBO) [1] and lithium niobate (LNB) [2], in which tunability and optical bandwidth are achieved by injection seeding with single-mode tunable diode lasers (TDL). We now report a new modular spectroscopic system, as depicted in Figure 1: a TDL-seeded OPO based on periodically poled lithium niobate (PPLN) plus a bulk-LNB OPA.
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Rapports d'organisations sur le sujet "LNMB"

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Okisatari, Mahesti, et Upalat Korwatanasakul. Leaving No One Behind in Carbon Neutrality Strategies : Insights from Developing Countries in Asia and the Pacific. United Nations University Institute for the Advanced Study of Sustainability, avril 2023. http://dx.doi.org/10.53326/zfhc4987.

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This policy brief offers strategies to operationalise the principle of 'leaving no one behind' (LNOB) in climate policies, focusing on developing countries. It is based on key areas of progress identified in the long-term low greenhouse gas emission development strategies (LTSs) of eight developing countries in Asia and the Pacific. Recommendations: (i) sustain decent work and reinforce labour rights to mitigate disruptions caused by the transition; (ii) combine climate initiatives with social protection measures to maintain an adequate standard of living for all; (iii) promote investments in inclusive climate projects and establish financial inclusion regulations; and (iv) establish a people-centred and gender-sensitive monitoring, reporting, and evaluation process.
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Author, Not Given. Environmental Assessment for the Commercial Demonstration of the Low NOx Burner/Separated Over-Fire Air (LNB/SOFA) Integration System Emission Reduction Technology, Finney County, Kansas. Office of Scientific and Technical Information (OSTI), mars 2003. http://dx.doi.org/10.2172/837336.

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