Relevant bibliographies by topics / A ring with stable range n

Academic literature on the topic 'A ring with stable range n'

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Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "A ring with stable range n"

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Yu, Hua-Ping, and Victor P. Camilo. "On strongly pi-regular rings of stable range one." Bulletin of the Australian Mathematical Society 51, no. 3 (June 1995): 433–37. http://dx.doi.org/10.1017/s0004972700014258.

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An associative ring R is said to have stable range one if for any a, b ∈ R satisfying aR + bR = R, there exists y ∈ R such that a + by is right (equivalently, left) invertible. Call a ring R strongly π-regular if for every element a ∈ R there exist a number n (depending on a) and an element x ∈ R such that an = an+1x. It is an open question whether all strongly π-regular rings have stable range one. The purpose of this note is to prove the following Theorem: If R is a strongly π-regular ring with the property that all powers of every nilpotent von Neumann regular element are von Neumann regular in R, then R has stable range one.
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Xiao, Guangshi, and Wenting Tong. "n-Clean Rings and Weakly Unit Stable Range Rings." Communications in Algebra 33, no. 5 (April 2005): 1501–17. http://dx.doi.org/10.1081/agb-200060531.

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Chen, Huanyin, and Fu-an Li. "Exchange Rings Satisfying the n-Stable Range Condition, II." Algebra Colloquium 10, no. 1 (June 2003): 1–8. http://dx.doi.org/10.1007/s100110300000.

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Vaserstein, Leonid N., and Ethel Wheland. "Factorization of invertible matrices over rings of stable rank one." Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics 48, no. 3 (June 1990): 455–60. http://dx.doi.org/10.1017/s1446788700029980.

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AbstractEvery invertible n-by-n matrix over a ring R satisfying the first Bass stable range condition is the product of n simple automorphisms, and there are invertible matrices which cannot be written as the products of a smaller number of simple automorphisms. This generalizes results of Ellers on division rings and local rings.
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SANYAL, BIPLAB, and ABHIJIT MOOKERJEE. "STUDY OF THE ELECTRONIC AND STRUCTURAL PROPERTIES OF ZnO CLUSTERS." International Journal of Modern Physics B 24, no. 17 (July 10, 2010): 3297–309. http://dx.doi.org/10.1142/s0217979210052209.

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We present a systematic first-principle study of the structures, energetics and electronic structure of (ZnO) n clusters in the size range 1 ≤ n≤ 12. We show that the planar ring structures are stable for n < 8, while spheroidal structures made out of rings of (ZnO) 3 and (ZnO) 2 are stable for n ≥ 8. We examine the binding energies and HOMO–LUMO gaps of the clusters and try to understand our results from simple physical ideas.
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Deoghare, Chetana Anand. "Thermally Stable Copolymers with Pendant “N-Arylimide” Groups Via Reversible Deactivation Radical Polymerization Technique." ECS Transactions 107, no. 1 (April 24, 2022): 18175–87. http://dx.doi.org/10.1149/10701.18175ecst.

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This paper reports the synthesis of copolymers of N-arylitaconimides (NAI) and methyl methacrylate (MMA) with random architecture via activator generated electron transfer atom transfer radical polymerization (AGET-ATRP) method, resulting in N-arylimide as pendant group.The AGET-ATRP is a versatile and famous reversible deactivation radical polymerization technique used to synthesize the well defined polymers. The structural characterizations of obtained copolymers were done using FT-IR, 1H-NMR spectroscopy and elemental analysis. The molecular weights of copolymers were in the range 8,000-20,000 g/ mol with a narrow polydispersity index i.e. 1.2-1.3. Thermal characterization of Poly(NAI-ran-MMA) copolymers were done using differential scanning calorimetry (DSC) and thermogravimetric analysis (TG/ DTG). DSC scans show 60-117% enhancements in the glass transition temperature (Tg), as compared to Poly(methyl methacrylate). The rate of copolymerization, molecular weight and Tg were observed to increase with increase in electron releasing nature of the substituent on aromatic ring of the pendant group.
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Arulsamy, Navamoney, D. Scott Bohle, and Inna Perepichka. "Chemistry of the potassium, silver, and tetra(n-butyl)ammonium salts of sydnone N-oxide (Traube's anion)." Canadian Journal of Chemistry 85, no. 2 (February 1, 2007): 105–17. http://dx.doi.org/10.1139/v07-001.

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Traube's dianion, 4-methylcarboxysydnone-3-hydroxylate (2), and its monomethyl ester (1) are readily isolated as their di- and mono-potassium salts from the reaction of nitric oxide with dimethylmalonate and potassium methoxide in methanol. Metathesis reactions of 1 with silver nitrate and tetra(n-butyl)ammonium bromide yield the silver and tetra(n-butyl)ammonium salts of 4-methylcarboxysydnone-3-hydroxylate. In contrast to other known sydnone derivatives, the present sydnones are stable in both acidic and basic solutions. Single crystal X-ray diffraction data obtained for 2 and the silver salt (3) reveal planarity and delocalization of double bonds in the sydnone ring, indicating aromatic behavior. The tetra(n-butyl)ammonium salt (4) is soluble in a range of organic compounds. Cyclic voltammetric data measured for 4 in acetonitrile reveal an irreversible oxidation peak at +1.09 V vs. Fc–Fc+ couple suggesting that the sydnone derivatives can be oxidized with an appropriate oxidizing agent. Differential scanning calorimetry data reveal thermal stability at ambient conditions and exothermic decomposition at high temperatures (>229 °C). The sydnone derivatives are characterized by two strong electronic absorptions in the UV region and rich vibrational (IR and Raman) spectra in the 1800–1500 cm–1 region. Density functional theory (B3LYP/6-311+++G**) is applied to estimate the aromaticity of the sydnone ring and to assign the vibrational spectral data.Key words: sydnone, trans-diazeniumdiolate, N-oxide.
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Seino, Hiroshi, Osamu Haba, Amane Mochizuki, Masahiro Yoshioka, and Mitsuru Ueda. "Preparation and Properties of Polyisoimides as a Highly Dimensionally Stable Polyimide Precursor with Low Dielectric Constant." High Performance Polymers 9, no. 3 (September 1997): 333–44. http://dx.doi.org/10.1088/0954-0083/9/3/011.

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Fluorinated polyimides (PIs) with low dielectric constant and high dimensional stability have been developed using polyisoimides (PIIs) as a polyimide precursor. The PIIs were prepared by the ring-opening polyaddition of the dianhydrides pyromellitic dianhydride, biphenyltetracarboxylic dianhydride and 4, 4′-hexafluoropropylidenedi(phthalic anhydride) with the diamines 2, 2′-dimethylbenzidine and 2, 2′-bis(trifluoromethyl)benzidine, followed by treatment with trifluoroacetic anhydride/triethylamine or dicyclohexylcarbodiimide in N;N-dimethylacetamide. The PIIs were soluble in a wide range of solvents including dipolar aprotic solvents, cyclohexanone and tetrahydrofuran at room temperature, and easy to convert to corresponding PIs by high thermal treatment. The resulting PIs showed low dielectric constants of less than 3 at 1 MHz as well as low CTEs. Furthermore, during the isomerization reaction, migration of copper in the PI film was hardly observed.
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YAMAPI, R., and M. A. AZIZ-ALAOUI. "STABILITY OF THE CONTROLLED SYNCHRONIZATION MANIFOLD IN A RING OF MUTUALLY COUPLED CHAOTIC SYSTEMS." International Journal of Bifurcation and Chaos 18, no. 08 (August 2008): 2397–414. http://dx.doi.org/10.1142/s0218127408021774.

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The active control of the unstable synchronization manifold in a shift-invariant ring of N mutually coupled chaotic oscillators is investigated. After deriving the bifurcation structures and chaotic states in the single oscillator, we find the regime of coupling parameters leading to stable and unstable synchronization phenomena in the ring, using the Master stability function approach with the transverse Lyapunov exponents. The active control technique is applied on the mutually coupled chaotic systems to suppress unstable synchronization states. We derive the range of control gain parameters which leads to a successful control and the stability of the control design. The effects of the amplitude of the parametric perturbations on the stability boundaries of the controlled unstable synchronization process are also studied.
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Vuckovic, Gordana, Sladjana Tanaskovic, Mirjana Antonijevic-Nikolic, Vukosava Zivkovic-Radovanovic, and Gordana Gojgic-Cvijovic. "A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives." Journal of the Serbian Chemical Society 74, no. 6 (2009): 629–40. http://dx.doi.org/10.2298/jsc0906629v.

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Four new air-stable mixed-ligand Co(II) complexes having the general formula [Co2(Y)tpmc]Z3?q(H2O/CH3CN) (HY = N-methylglycine/N,N-dimethylglycine, Z = - 4BF , qH2O=4 or 3; HY=S-norvaline/S-valine Z=-ClO4 , qCH3CN = 0.5; qH2O = 0.5; tpmc = N,N',N'',N'''-tetrakis(2-pyridylmethyl)- -1,4,8,11-tetraazacyclotetradecane) were prepared. The composition, some physical and chemical properties and their tentative geometries were evaluated based on elemental analysis (C, H, N), conductometric and magnetic measurements, spectroscopic data (UV/Vis, IR) and cyclic voltammetry. The data were compared with earlier described analogous complexes containing the macrocyclic ligand and aliphatic aminocarboxylates. It is assumed that all complexes are binuclear with an exo coordination mode of the octaazamacrocyclic pendant ligand in the boat conformation. In addition, two -N-(CH2)2-N- portions of the cyclam ring within the tpmc ligand and Co(II) ions in the high-spin state are most probably bridged via oxygen atoms from the anion of the aminocarboxylate/derivatives, whereas nitrogen atoms rest uncoordinated. In all cases, a combined chelate-bridged coordination is proposed as the most probable. The complexes were electrochemically stable in the potential range -1.0 to 1.0 V. They were also preliminary assayed toward some microorganisms together with the ligands, starting simple salts and solvents as test substances. In some cases, certain antimicrobial activity of the complexes was detected.
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Books on the topic "A ring with stable range n"

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Inc, Game Counselor. Game Counselor's Answer Book for Nintendo Players. Redmond, USA: Microsoft Pr, 1991.

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Inc, Game Counsellor, ed. The Game Counsellor's answer book for Nintendo Game players: Hundredsof questions -and answers - about more than 250 popular Nintendo Games. Redmond, Washington: Microsoft Press, 1991.

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Book chapters on the topic "A ring with stable range n"

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Ara, Pere. "Stable range of aleph-nought-continuou regular rings." In Ring Theory, 1–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/bfb0100909.

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Santiccioli, Alessio. "Inductorless Frequency Synthesizers for Low-Cost Wireless." In Special Topics in Information Technology, 37–50. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62476-7_4.

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AbstractThe quest for ubiquitous wireless connectivity, drives an increasing demand for compact and efficient means of frequency generation. Conventional synthesizer options, however, generally trade one requirement for the other, achieving either excellent levels of efficiency by leveraging LC-oscillators, or a very compact area by relying on ring-oscillators. This chapter describes a recently introduced class of inductorless frequency synthesizers, based on the periodic realignment of a ring-oscillator, that have the potential to break this tradeoff. After analyzing their jitter-power product, the conditions that ensure optimum performance are derived and a novel digital-to-time converter range-reduction technique is introduced, to enable low-jitter and low-power fractional-N frequency synthesis. A prototype, which implements the proposed design guidelines and techniques, has been fabricated in 65 nm CMOS. It occupies a core area of 0:0275 mm$$^{2}$$ 2 and covers the 1:6-to-3:0 GHz range, achieving an absolute rms jitter (integrated from 30 kHz-to-30 MHz) of 397 fs at 2:5 mW power. With a corresponding jitter-power figure-of-merit of −244 dB in the fractional-N mode, the prototype outperforms prior state-of-the-art inductorless frequency synthesizers.
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Zaman, M., K. Kleineidam, L. Bakken, J. Berendt, C. Bracken, K. Butterbach-Bahl, Z. Cai, et al. "Isotopic Techniques to Measure N2O, N2 and Their Sources." In Measuring Emission of Agricultural Greenhouse Gases and Developing Mitigation Options using Nuclear and Related Techniques, 213–301. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-55396-8_7.

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AbstractGHGemissions are usually the result of several simultaneous processes. Furthermore, some gases such as N2 are very difficult to quantify and require special techniques. Therefore, in this chapter, the focus is on stable isotopemethods. Both natural abundance techniques and enrichment techniques are used. Especially in the last decade, a number of methodological advances have been made. Thus, this chapter provides an overview and description of a number of current state-of-the-art techniques, especially techniques using the stable isotope15N. Basic principles and recent advances of the 15N gasflux method are presented to quantify N2 fluxes, but also the latest isotopologue and isotopomermethods to identify pathways for N2O production. The second part of the chapter is devoted to 15N tracing techniques, the theoretical background and recent methodological advances. A range of different methods is presented from analytical to numerical tools to identify and quantify pathway-specific N2O emissions. While this chapter is chiefly concerned with gaseous N emissions, a lot of the techniques can also be applied to other gases such as methane (CH4), as outlined in Sect. 10.1007/978-3-030-55396-8_5#Sec12.
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"The n-Stable Range Condition." In Series in Algebra, 361–403. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814329729_0012.

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Waldhausen, Friedhelm, Bjørn Jahren, and John Rognes. "Introduction." In Spaces of PL Manifolds and Categories of Simple Maps (AM-186). Princeton University Press, 2013. http://dx.doi.org/10.23943/princeton/9780691157757.003.0001.

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This book presents a proof of the stable parametrized h-cobordism theorem, which deals with the existence of a natural homotopy equivalence for each compact CAT manifold. In this theorem, a stable CAT h-cobordism space is defined in terms of manifolds, whereas a CAT Whitehead space is defined in terms of algebraic K-theory. This is a stable range extension to parametrized families of the classical hand s-cobordism theorems first stated by A. E. Hatcher, but his proofs were incomplete. This book provides a full proof of this key result, which provides the link between the geometric topology of high-dimensional manifolds and their automorphisms, as well as the algebraic K-theory of spaces and structured ring spectra.
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Bharti, Ruchi, Monika Verma, Ajay Thakur, and Renu Sharma. "N-Heterocyclic Carbenes (NHCs): An Introduction." In Carbene. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102760.

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In 1991, the isolation and characterization of nitrogen heterocyclic carbene (NHCs) prompted the discovery of a new class of chemical compounds. NHCs have developed academic curiosity as one of the most potent tools in organic chemistry, exhibiting its utility in commercially relevant protocols. NHCs are cyclic compounds with a divalent carbon atom bonded to at least one nitrogen atom. The size of the carbene ring, the substituent moieties on the nitrogen atoms, and the extra atoms within the heterocycle can be changed to produce a variety of distinct NHCs with various electrical properties. They make excellent ligands in coordination chemistry because of their ability to act as donors and the consequent stable bonds with most transition metals. Free NHCs have also been used as organocatalysts in chemical reactions that require no metals. This chapter provides an outline of the N-Heterocyclic Carbenes in Contemporary Chemistry, including their general properties and highlighting the essential structural and electronic features of different NHCs along with their synthetic procedure.
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"Higher Dimensions in the Theory of Heredity." In Normal Partitions and Hierarchical Fillings of N-Dimensional Spaces, 84–110. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-6768-5.ch004.

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On the basis Mendel's experiments, a mathematical model is constructed that describes the results of these experiments in a wide range of parameters. There is shown that in the mathematical model of Mendel's experiments, based on real patterns of plant development, there are equilibrium positions between the dominant and recessive forms. This equilibrium position is stable and located in the multidimensional space of system phenotypes. This newly discovered behavior of the dominant and recessive forms in the vicinity of the equilibrium position (true) differs significantly from the logistic equilibrium position in the Hardy-Weinberg principle, built without taking into account the real patterns in the plant population. The geometry of the neighborhood of the compound of two nucleic acid helices with nitrogen bases was investigated. It is proved that this neighborhood is a cross-polytope of dimension 13 (polytope of hereditary information), in the coordinate planes of which there are complementary hydrogen bonds of nitrogenous bases.
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Taber, Douglass F. "The Rawal Synthesis of N-Methylwelwitindolinone D Isonitrile." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0105.

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The complex polycyclic structure of N-methylwelwitindolinone D isonitrile 3 was assigned in 1999. The welwitinines show an intriguing range of biological activity, including reversal of P-glycoprotein-mediated multidrug resistance in human carcinoma cells. Viresh H. Rawal of the University of Chicago described (J. Am. Chem. Soc. 2011, 133, 5798) the first synthesis of 3, using as a key step the Pd-catalyzed cyclization of 1 to 2. The ketone 1 was assembled by the convergent coupling of 7 with 11. The indole 7 was readily available by Batcho-Leimgruber cyclization of commercial 4 to 5. The expected 3-acylation followed by N -methylation delivered the stable ketone 6. The unstable 7 was prepared as needed. The anisole 8 was the starting material for the preparation of the alicyclic diene 11. Although this synthesis was carried out in the racemic series, enantiomerically enriched 9 could be prepared by Shi epoxidation of the β,γ-unsaturated ketone from Birch reduction The alcohol 7 was not stable to silica gel chromatography. The mixture of 11 with the crude alcohol 7 was therefore activated by the addition of TMSOTf, then added via cannula to aqueous HClO4 in THF to deliver the coupled product 1 as a single diastereomer. The remarkable cyclization of 1 to 2 required extensive screening. Eventually it was found that a combination of ( t -Bu)3 P with Pd(OAc)2 as the Pd source worked well. This concise convergent synthetic strategy makes the welwitinine core 2 available in gram quantities. There were two problems to be solved in the conversion of 2 to 3. The first was the installation of the oxy bridge. Indoles are notoriously sensitive to overoxidation. Nevertheless, addition of an acetone solution of dimethyl dioxirane to the bromo ketone 12 over 24 hours gave clean conversion to 13. The remaining challenge was the conversion of the aldehyde of 13 to the isonitrile. Kim had described the inversion of an oxime to the isothiocyanate. Optimization of this protocol led to the thiourea 14 as the best for this transformation. Mild desulfurization then delivered N -methylwelwitindolinone D isonitrile 3.
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Manning, Jane. "JOCELYN MORLOCK (b. 1969)Involuntary Love Songs (2008)." In Vocal Repertoire for the Twenty-First Century, Volume 2, 156–59. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780199390960.003.0049.

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This chapter explores Canadian composer Jocelyn Morlock’s Involuntary Love Songs (2008). Morlock’s lively, distinctive voice and clear vision are immediately evident in this trio of satisfying, ear-catching songs, written in an accessible style that recalls elements of an earlier North American ‘art-song’ tradition. The cycle will be an asset to any recital programme. The vibrantly evocative poems by Alan Ashton are ideal musical vehicles, and Morlock responds to them with spontaneity and empathy, mirroring their emotional surges and bracing contrasts. An enviably uncluttered musical language often has modal overtones, and she favours spare, lean textures, with frequent open fifths and fourths anchored to a stable, tonic base. Words are set so as to ring out clearly and vocal lines stay within a practical range, following the contours of natural speech. The piece was originally written for soprano, but, in keeping with a current trend, exists in different transposed versions, each also open to adaptation for individual performers.
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Taber, Douglass F. "Alkaloid Synthesis: ( S )-Nicotine (Helmchen), (+)-CP-99,994 (Shi),(-)-Adaline (Yu), (-)-Securinine (Bayó n/Figueredo), Alkaloid 223A (Aubé ), (-)-Huperzine A (Fukuyama) 110." In Organic Synthesis. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199965724.003.0057.

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The recent development of practical methods for the asymmetric preparation of amines has enabled creative approaches to alkaloid construction. Günter Helmchen of the Ruprecht-Karls-Universit ät Heidelberg developed (Synlett 2009, 1413) an iridium catalyst that mediated the enantioselective amination of the allylic carbonate 1 to give 2. Hydroformylation followed by reduction then completed the synthesis of ( S )-nicotine 3. Yian Shi of Colorado State University devised (J. Org. Chem. 2009, 74, 7577) a Pd catalyst for the enantioselective oxidative diamination of terminal alkenes such as 4. The product 6 was readily carried on to (+)-CP-99,994, a potent and selective nonpeptide substance P receptor antagonist. Chan-Mo Yu of Sungkyunkwan University prepared (Synlett 2009, 1498) the alcohol corresponding to the azide 8 by BINOL-catalyzed addition of an allyl stannane to the corresponding aldehyde. Reduction of the azide and subsequent intramolecular condensation with the ketone gave an imine, which was cyclized with Bu3SnF to 9. Oxidative cleavage then delivered (-)-adaline 10. Barry M. Trost of Stanford University developed a family of Pd catalysts for the enantioselective coupling of racemic butadiene monoepoxide 12 with a range of nucleophiles. Pau Bayón and Marta Figueredo of the Universitat Autónoma de Barcelona extended (J. Org. Chem. 2009, 74, 6199) that range to include glutarimide 11 and succinimide. The adduct 13 provided the enantiomerically pure core for a total synthesis of (-)-securinine 14, and others of the Securinega alkaloids. Jeffrey Aubé of the University of Kansas prepared (Organic Lett. 2009, 11, 4140) the enantiomerically enriched ketone 15 by the enantioselective hydroboration of norbornadiene, followed by oxidation and alkylation. Intramolecular Schmidt cyclization following the protocol he had developed converted 15 into 16. He then took advantage of the still substantial ring strain of the expanded norbornene to drive ring-opening metathesis, giving, after hydrogenation, the lactam 17. He was able to selectively convert 17 into either 18 or the diastereomer in which the ethyl groups are cis one to another by varying the acid used in the final reductive work-up.
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Conference papers on the topic "A ring with stable range n"

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Wang, Mu-Chun, Zhen-Ying Hsieh, Chien-Chih Chen, Shuang-Yuan Chen, and Heng-Sheng Huang. "Design of a 0.18um Stable Non-Volatile Boost Circuit in High/Low Temperature Operation." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21083.

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In this work, we propose the P-MOS diode structure with triple-well process plus MIM capacitors, to establish two non-volatile boosters for flash memory products. Every connecting point in circuits, avoiding the occurrence of dielectric breakdown in gate oxide or p-n junction, was precisely conceived and examined. As the consideration of the system-on-chip (SoC), two stabilized-voltage circuits and two internal ring oscillators were built in. Additionally, to couple the voltage and to stabilize the voltage after several signal-transfer stages, obtaining the output voltage with DC 12V and DC20V, separately, as the input voltage is 3.3V, is necessary. The pumping time, while the high voltage is approached, is only several micro-seconds. The temperature effect with −25 ∼ 75°C range little impacts the booster voltages. The variation, due to temperature contribution, is less than 3%. By the way, this circuit design not only adopts the TSMC 0.18um process design kits, but includes some ESD protection circuits, in output terminals, to provide chip protection. It’s a full and efficient booster design with 0.18um CMOS process. The final dimension of this chip is around 705×978um2.
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Grollitsch, Werner, and Roberto Nonis. "A fractional-N, all-digital injection-locked PLL with wide tuning range digitally controlled ring oscillator and Bang-Bang phase detection for temperature tracking in 40nm CMOS." In ESSCIRC Conference 2016: 42nd European Solid-State Circuits Conference. IEEE, 2016. http://dx.doi.org/10.1109/esscirc.2016.7598277.

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Hwang, Chanwoong, Hangi Park, Taeho Seong, and Jaehyouk Choi. "A 188fsrms-Jitter and −243d8-FoMjitter 5.2GHz-Ring-DCO-Based Fractional-N Digital PLL with a 1/8 DTC-Range-Reduction Technique Using a Quadruple-Timing-Margin Phase Selector." In 2022 IEEE International Solid- State Circuits Conference (ISSCC). IEEE, 2022. http://dx.doi.org/10.1109/isscc42614.2022.9731646.

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Maximov, Philipp Y., Cynthia Myers, Daphne J. Fernandes, and V. Craig Jordan. "Abstract 4409: The characterization of isomerically stable fixed ring derivatives of tamoxifen metabolites 4-hydroxytamoxifen and 4-hydroxy-N-desmethyltamoxifen (endoxifen) in vitro." In Proceedings: AACR 104th Annual Meeting 2013; Apr 6-10, 2013; Washington, DC. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1538-7445.am2013-4409.

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Avasarala, Naga Sruti, G. L. Donadio, T. Witters, K. Opsomer, B. Govoreanu, A. Fantini, S. Clima, et al. "Half-threshold bias Ioff reduction down to nA range of thermally and electrically stable high-performance integrated OTS selector, obtained by Se enrichment and N-doping of thin GeSe layers." In 2018 IEEE Symposium on VLSI Technology. IEEE, 2018. http://dx.doi.org/10.1109/vlsit.2018.8510680.

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Aitio, Antti, and David Howey. "Combining Non-Parametric and Parametric Models for Stable and Computationally Efficient Battery Health Estimation." In ASME 2020 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/dscc2020-3180.

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Abstract Equivalent circuit models for batteries are commonly used in electric vehicle battery management systems to estimate state of charge and other important latent variables. They are computationally inexpensive, but suffer from a loss of accuracy over the full range of conditions that may be experienced in real-life. One reason for this is that the model parameters, such as internal resistance, change over the lifetime of the battery due to degradation. However, estimating long term changes is challenging, because parameters also change with state of charge and other variables. To address this, we modelled the internal resistance parameter as a function of state of charge and degradation using a Gaussian process (GP). This was performed computationally efficiently using an algorithm [1] that interprets a GP to be the solution of a linear time-invariant stochastic differential equation. As a result, inference of the posterior distribution of the GP scales as 𝒪(n) and can be implemented recursively using a Kalman filter.
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Dagaut, Philippe, and Sandro Gai¨l. "Kinetics of Gas Turbine Liquid Fuels Combustion: Jet-A1 and Bio-Kerosene." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27145.

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The oxidation of kerosene and bio-kerosene (kerosene-rapeseed oil methyl esters 80/20 in mole) was studied experimentally in a jet-stirred reactor at 10 atm and constant residence time, over the high temperature range 740-1200 K, and for variable equivalence ratios in the range 0.5–1.5. Concentration profiles of reactants, stable intermediates, and final products were obtained by probe sampling followed by on-line and off-line GC analyses. The oxidation of these fuels in these conditions was modeled using a detailed kinetic reaction mechanism consisting of 2027 reversible reactions and 263 species. The surrogate bio-kerosene model-fuel used consisted of a mixture of n-hexadecane, n-propylcyclohexane, n-propylbenzene, and n-decane. For bio-kerosene, the methyl ester fraction was simply represented by n-hexadecane. The proposed kinetic reaction mechanism used in the modeling yielded a good representation of the kinetics of oxidation of kerosene and bio-kerosene under JSR conditions. The data and the model showed the bio-kerosene (Jet A-1/RME mixture) has a slightly higher reactivity than Jet A-1 whereas not major modification of the products distribution was observed besides the formation of small methyl esters from RME’s oxidation.
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8

Chae, Seokyong, Moustafa El-Gindy, Mukesh Trivedi, Inge Johansson, and Fredrik O¨ijer. "Dynamic Response Predictions of a Truck Tire Using Detailed Finite Element and Rigid Ring Models." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61111.

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A detailed nonlinear finite element (FE) model of a radial-ply truck tire has been developed using an explicit FE code, PAM-SHOCK. The tire model was constructed to its extreme complexity with three-dimensional solid, layered membrane, and beam elements. In addition to the tire model itself, a rim model was included and rotated with the tire with proper mass and rotational inertial effects. The predicted tire responses, such as vertical stiffness, cornering force, and aligning moment, correlated very well to physical measurements. For complete vehicle simulations, a faster and simplified tire model is required for efficient analysis through-put. The behavior of such a tire model can be verified and improved by comparing responses with the developed FE model. Moreover, the parameters needed for the simplified model can be determined by the developed model instead of having to rely on tire measurements. The in-plane sidewall transitional stiffness and damping constants of the FE tire model were determined by rotating the tire on a cleat-drum. The other constants, such as in-plane rotational stiffness and damping constants, were determined by applying and releasing a tangential force on the rigid tread band of the FE tire model. The tire axle, spindle, and reaction force histories at longitudinal and vertical directions were recorded. In addition, the FFT algorithm was applied to examine the transient response in frequency domain. The tire steering characteristics were also determined. These parameters were used as input for a simplified rigid ring tire model. This study will discuss the results obtained from both the developed tire and the rigid ring tire models while both models are rolling at 12 mph constant linear speed and loading range of 13,345 N (3,000 lbs) to 53,378 N (12,000 lbs). The dynamic responses for the developed FE tire model were compared with the dynamics predicted using the rigid ring model. The results will show a successful attempt to capture the transient response of a tire rolling over a complex road profile.
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9

Dagaut, Philippe. "Kinetics of Kerosene Combustion Over Extended Conditions: Experimental and Modeling." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90015.

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The oxidation of kerosene (Jet-A1) and that of surrogate mixtures have been studied experimentally in a jet-stirred reactor at 1 to 40 atm and constant residence time, over the high temperature range 800–1300 K, and for variable equivalence ratio 0.5&lt;φ&lt;2). Concentration profiles of the reactants, stable intermediates, and final products have been obtained by probe sampling followed by on-line and off-line GC analyses. The oxidation of kerosene in these conditions was modeled using a detailed kinetic reaction mechanism (209 species and 1673 reactions, most of them reversible). In the modeling, kerosene was represented by four surrogate model fuels: 100% n-decane, n-decane-n-propylbenzene (74% / 26% mole), n-decane-n-propylcyclohexane (74% / 26% mole), and n-decane-n-propylbenzene-n-propylcyclohexane (74% / 15% / 11% mole). The 3-components model fuel was the most appropriate for simulating the JSR experiments. It was also successfully used to simulate the structure of a fuel-rich premixed kerosene-oxygen-nitrogen flame and ignition delays taken from the literature.
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10

Yang, Hyeon-Ho, and Jae-Hung Han. "Design of Revolute Joint With Bi-Stability Using Permanent Magnets." In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2419.

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Abstract Bi-stable mechanisms are systems with two distinct stable equilibrium positions within their range of operation. They are capable of steadily staying in positions without external power input and require less energy to move to the next stable state because of their snap-through behavior. Diverse applications including switches, deployable structures, and reconfigurable robots can benefit from bi-stability characteristics. However, the complexity of implementation and the limitation of structure configuration have made it difficult to apply conventional bi-stable mechanisms to the structures that require rotational bi-stability. Thus, in this paper, we proposed an implementation method using cylindrical magnets for the rotational bi-stable mechanism. The proposed bi-stable mechanism consists of a revolute joint with two links; one is the rotational link and the other is the fixed link. It has rotational bi-stability through the magnetic force relationship between the array of magnets on each link. To identify the characteristics of the proposed bi-stable mechanism, a cylindrical permanent magnet is considered as an electromagnet model that consists of one ring with a virtual electric current. Consequently, the magnetic field of the cylindrical permanent magnet can be calculated using Biot-Savart law. Similarly, the magnetic force between two cylindrical permanent magnets of the electromagnet model is calculated using Lorentz force law. The criteria of the magnet array for symmetric bi-stability are proposed and the potential energy diagram of the rotation link is considered as the performance criterion to identify the stable state.
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Reports on the topic "A ring with stable range n"

1

Zhao, Bingyu, Saul Burdman, Ronald Walcott, and Gregory E. Welbaum. Control of Bacterial Fruit Blotch of Cucurbits Using the Maize Non-Host Disease Resistance Gene Rxo1. United States Department of Agriculture, September 2013. http://dx.doi.org/10.32747/2013.7699843.bard.

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The specific objectives of this BARD proposal were: (1) To determine whether Rxol can recognize AacavrRxo1 to trigger BFB disease resistance in stable transgenic watermelon plants. (2) To determine the distribution of Aac-avrRxo1 in a global population of Aae and to characterize the biological function of Aac-avrRxo1. (3) To characterize other TIS effectors of Aae and to identify plant R gene(s) that can recognize conserved TIS effectors of this pathogen. Background to the topic: Bacterial fruit blotch (BFB) of cucurbits, caused by Acidovorax avenae subsp. citrulli (Aae), is a devastating disease that affects watermelon (Citrullus lanatus) and melon (Cucumis melo) production worldwide, including both Israel and USA. Two major groups of Aae strains have been classified based on their virulence on host plants, genetics and biochemical properties. Thus far, no effective resistance genes have been identified from cucurbit germplasm. In this project, we assessed the applicability of a non-host disease resistance gene, Rxol, to control BFB in watermelon. We also tried to identify Aae type III secreted (TIS) effectors that can be used as molecular probes to identify novel disease resistance genes in both cucurbits and Nieotianatabaeum. Major conclusions, solutions, achievements: We generated five independent transgenic watermelon (cv. Sugar Babay) plants expressing the Rxol gene. The transgenic plants were evaluated with Aae strains AAC001 and M6 under growth chamber conditions. All transgenic plants were found to be susceptible to both Aae strains. It is possible that watermelon is missing other signaling components that are required for Rxol-mediated disease resistance. In order to screen for novel BFB resistance genes, we inoculated two Aae strains on 60 Nieotiana species. Our disease assay revealed Nicotiana tabaeum is completely resistant to Aae, while its wild relative N. benthamiana is susceptible to Aae. We further demonstrated that Nieotiana benthamiana can be used as a surrogate host for studying the mechanisms of pathogenesis of Aae. We cloned 11 TIS effector genes including the avrRxolhomologues from the genomes of 22 Aae strains collected worldwide. Sequencing analysis revealed that functional avrRxol is conserved in group" but not group I Aae strains. Three effector genes- Aave_1548, Aave_2166 and Aave_2708- possessed the ability to trigger an HR response in N. tabacum when they were transiently expressed by Agrobaeterium. We conclude that N. tabacum carries at least three different non-host resistance genes that can specifically recognize AaeTIS effectors to trigger non-host resistance. Screening 522 cucurbits genotypes with two Aae strains led us to identify two germplasm (P1536473 and P1273650) that are partially resistant to Aae. Interestingly, transient expression of the TIS effector, Aave_1548, in the two germplasms also triggered HR-Iike cell death, which suggests the two lines may carry disease resistance genes that can recognize Aave_1548. Importantly, we also demonstrated that this effector contributes to the virulence of the bacterium in susceptible plants. Therefore, R genes that recognize effector Aave1548 have great potential for breeding for BFB resistance. To better understand the genome diversity of Aae strains, we generated a draft genome sequence of the Israeli Aae strain, M6 (Group I) using Iliumina technology. Comparative analysis of whole genomes of AAC001, and M6 allowed us to identify several effectors genes that differentiate groups I and II. Implications, both scientific and agricultural: The diversity of TIS effectors in group I and II strains of Aae suggests that a subset of effectors could contribute to the host range of group I and II Aae strains. Analysis of these key effectors in a larger Aae population may allow us to predict which cucurbit hosts may be at risk to BFB. Additionally, isolation of tobacco and cucurbit Rgenes that can recognize Aae type III effectors may offer new genetic resources for controlling BFB.
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