720 research outputs found
Tettagalma Menon, new genus
No full text<i>Tettagalma</i> Menon, new genus <p> <b>Diagnosis.</b> Medium­sized (25 mm forewing length) tettigarctid; prominent costal margin; Rs with three branches; origin of MA branches proximal to nodal line; CuA strongly deflected anteriorly at nodal line; wide marginal membrane; marginal membrane bearing numerous, equidistant striae.</p> <p> <b>Etymology.</b> Genus­group name formed from a combination of <i>tetti</i> in reference to the family and <i>agalma</i> from the Greek present, gift, as the specimen was donated to the author.</p> <p> <b>Type locality and horizon.</b> Vicinity of Nova Olinda, Nova Olinda Member, Crato Formation.</p> <p> <b>Type species.</b> <i>Tettagalma striata</i> Menon new genus and species, by monotypy.</p>Published as part of <i>Menon, Federica, 2005, New record of Tettigarctidae (Insecta, Hemiptera, Cicadoidea) from the Lower Cretaceous of Brazil, pp. 53-58 in Zootaxa 1087</i> on page 54, DOI: <a href="http://zenodo.org/record/170508">10.5281/zenodo.170508</a>
Novel Dialogue 2.3: Because I Couldn't Be a Dancer: Sigrid Nunez and Tara Menon (JP)
No full textThe brilliant New York writer Sigrid Nunez's most recent novel is What Are You Going Through; her previous one, The Friend, (2018) won the National Book Award. She speaks with Tara Menon, of the Harvard English department, and author of a terrific article about Sigrid Nunez in the Sewanee Review. The conversation ranges widely and then plunges into depths. Because life is defined by grief and mourning, so too are my novels, says Nunez. She thinks her upbringing with immigrant parents who felt adrift from their homeland and her own "failure" as a dancer (recounted in her 1995 debut novel, A Feather on the Breath of God ) are the ferment from which her vocation as a writer arose. The question of genre is tossed around: "fictional memoir" perhaps, which gets confused (insultingly, Tara thinks!) with auto-fiction. But Sigrid is fascinated by establishing a reality that is entirely made-up ("not a single friend angry!"), yet also documentary in nature. Perhaps the best tag for her work is "essay novel": that allows one to do what Javier Marias calls "literary thinking." And there's a wonderfully non-Pavlovian answer to the treat question: sometimes you can just have the whiskey
A priori and a posteriori analysis of the hybrid two-level large-eddy simulation method for high Reynolds number complex flows
No full textWe present a priori and a posteriori analysis of the assumptions and predictions of the hybrid two-level large-eddy simulation (TLS-LES) method for high Reynolds number complex flows. The TLS-LES methodology is a multi-scale framework for simulation of turbulent flows in complex configurations at practically relevant Reynolds number. It additively combines the two-level simulation (TLS) model with a conventional large-eddy simulation (LES) approach by employing a static or dynamic blending function. In the present study, first we analyze the model assumptions employed by the TLS model to obtain the small-scale solution necessary for closure of the large-scale equations. Afterward, we analyze the large-scale and small-scale solutions to assess the predictive ability of the multi-scale framework for specific turbulence physics such as role of forward and backscatter of energy and presence of co- and counter-gradient diffusion. To perform these investigations, we consider cases with increasing degree of geometrical complexity, namely, flow in a periodic channel, flow past a bump placed on the lower surface of the channel and flow past a finite-span NACA0015 airfoil
Il bene del filosofo e il limite della città. Sulla politica filosofica di Leo Strauss
No full textThe intention of this paper is to show how Leo Straussʼ mature writings respond to the twofold necessity of political philosophy: contributing, at the same time, to the good of the city and to the good of the philosophers. In the first place, it will try to prove this point by analyzing in detail the Introduction to On Tyranny (1948), which represents an essential step in order to understand the intention of the author. In the second place, it will tackle the problem of justice, that is, of natural right, by concentrating on the so called " tyrannical teaching ". This teaching is a way to present a truth which the city cannot find acceptable, that is, an unpleasant truth concerning the irresoluble problem of justice and legitimacy. In conclusion, it will point to the tension between philosophy, i.e., search for knowledge, and the city, i.e., the realm of opinion. For the philosopher, as such, has to " corrupt " the young in order to pursue his search for knowledge of the whole, or the nature of all things. Therefore, he weakens the city, since philosophizing implies unbelief in the gods of the city
Strategies for Dendrite-free Lithium and Sodium Metal Anodes
No full textAs the public demand for electric vehicles and consumer electronics grows at an exponential rate, traditional energy storage systems like lithium-ion batteries are proving to be insufficient. A potential candidate to replace these conventional systems is the lithium metal battery. However, replacing the anode of lithium-ion batteries with lithium (Li) metal comes with its own challenges. Safety concerns and capacity loss during cycling (discharge-charge) are caused by internal dendrite formation and infinite volume change of the Li metal. In this work, two different strategies have been explored to counter these issues: 1. 3-dimensional metallic host for Li metal2. Surface layer deposition As the 3D metal host, a 3D porous nickel (3DPNi) substrate was used. It was fabricated in-house through a facile template-free electrodeposition process. Detailed electrochemical Li cycling tests were performed using a symmetric cell to investigate the performance of the substrate. Different aspects of the Li cycling like substrate structure and morphology, electrolyte modification (with LiNO3), kinetics of Li+ diffusion and the electrochemical impedance performance of the substrate were investigated. The 3DPNi substrate was also tested for its compatibility with sodium metal. To investigate the effect of surface layer deposits, atomic layer depositions (ALD) of Al2O3 and TiO2 were done on planar nickel substrates. Each of these were subjected to electrochemical Li cycling tests. Our results show that the 3DPNi substrate can be effectively cycled with Li for up to 300 cycles at a capacity of 0.5 mAh⋅cm-2 and a current rate of 1 mA⋅cm-2. Increasing the capacity to 3 mAh⋅cm-2 (6 times) at the same current rate resulted in up to 60 cycles. It was also found out that this substrate could be used for sodium metal cycling. ALD on planar substrates have enabled the Li metal to be cycled for more than 300 cycles without failure, albeit at a capacity of 0.25 mAh⋅cm-2 and a current rate of 0.125 mA⋅cm-2. Hence, our study confirms that both the methods significantly improve the performance of the lithium (and sodium) metal anodes
Equivariant elliptic cohomology and twisted equivariant k-theory
No full textEquivariant elliptic cohomology and twisted equivariant K-theory are both related to the representations of loop groups. After making these relationships precise, we propose a map from twisted equivariant elliptic cohomology to twisted K-theory of the inertia stack using equivariant de Rham models. This proposal agrees with the Freed-Hopkins-Teleman q = 1 map from characters of representations of loop groups to distributions associated to twisted equivariant K-theory classes.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01The student, Dileep Menon, accepted the attached license on 2019-05-24 at 15:54.The student, Dileep Menon, submitted this Dissertation for approval on 2019-05-24 at 16:06.This Dissertation was approved for publication on 2019-05-28 at 10:50.DSpace SAF Submission Ingestion Package generated from Vireo submission #13991 on 2019-11-26 at 13:00:58Made available in DSpace on 2019-11-26T20:49:00Z (GMT). No. of bitstreams: 4
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Previous issue date: 2019-05-28Embargo set by: Seth Robbins for item 112889
Lift date: 2021-11-26T20:49:41Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 112889 on 2021-11-27T10:15:09Z
On the Elusive Crystallography of Lithium‐Rich Layered Oxides: Novel Structural Models
No full textLithium-rich layered oxides (LRLOs) are one of the most attractive families among future positive electrode materials for the so-called fourth generation of lithium-ion batteries (LIBs). Their electrochemical performance is enabled by the unique ambiguous crystal structure that is still not well understood despite decades of research. In the literature, a clear structural model able to describe their crystallographic features is missing thereby hindering a clear rationalization of the interplay between synthesis, structure, and functional properties. Here, the structure of a specific LRLO, Li1.28Mn0.54Ni0.13Co0.02Al0.03O2, using synchrotron X-ray diffraction (XRD), neutron diffraction (ND), and High-Resolution Transmission Electron Microscopy (HR-TEM), is analyzed. A systematic approach is applied to model diffraction patterns of Li1.28Mn0.54Ni0.13Co0.02Al0.03O2 by using the Rietveld refinement method considering the R3 over bar m and C2/m unit cells as the prototype structures. Here, the relative ability of a variety of structural models is compared to match the experimental diffraction pattern evaluating the impact of defects and supercells derived from the R3 over bar m structure. To summarize, two possible models able to reconcile the description of experimental data are proposed here for the structure of Li1.28Mn0.54Ni0.13Co0.02Al0.03O2: namely a monoclinic C2/m defective lattice (prototype Li2MnO3) and a monoclinic defective supercell derived from the rhombohedral R3 over bar m unit cell (prototype LiCoO2).Here, a detailed investigation of the crystal structure of Lithium-Rich layered Oxides is reported, using Synchrotron X-ray diffraction, Neutron diffraction, and Transmission Electron Microscopy. The introduction of defects into a monoclinic unit cell and the supercells approach can describe all main structural features, opening new frontiers in rationalization of the interplay between synthesis, structure, and electrochemical properties.imag
Letter of acknowledgement: “A part apart: the life and thought of B R Ambedkar” – “Bhimrao Ramji Ambedkar and the question of socialism in India” – “The evolution of pragmatism in India: an intellectual biography of B R Ambedkar”
No full textThe library is very grateful for this donation by Professor Dilip Menon. Personalised bookplates have been inserted in the books.I acknowledge with thanks and appreciation your donation of the following 3 books:
- “A part apart: the life and thought of B R Ambedkar” – Ashok Gopal (1 copy)
- “Bhimrao Ramji Ambedkar and the question of socialism in India” – V Geetha (1 copy)
- “The evolution of pragmatism in India: an intellectual biography of B R Ambedkar” – Scott R Stroud (1 copy)MM202
Risk-reducing early salpingectomy and delayed oophorectomy as a two-staged alternative for primary prevention of ovarian cancer in women at increased risk: a commentary.
No full textThis is the peer reviewed version of the following article: Gaba, F. , Piek, J. , Menon, U. and Manchanda, R. (2019), Risk reducing early salpingectomy and delayed oophorectomy as a two staged alternative for primary prevention of ovarian cancer in increased risk women: a commentary. BJOG: Int J Obstet Gy. Accepted Author Manuscript. doi:10.1111/1471-0528.15651, which has been published in final form at https://doi.org/10.1111/1471-0528.15651. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Version
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