cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mechanics of polymer brush based soft active materials -- theory and experiments
Creators: name: Manav, M.
name: Anilkumar, P.
name: Phani, A. Srikantha
Publisher: name: arXiv
Year: 2018
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Brush-like structures emerge from stretching of long polymer chains, densely grafted on to the surface of an impermeable substrate. They arise due to the competition between conformational entropic elasticity of polymer chains and excluded volume interactions from the intra and interchain monomer repulsions. Recently, stimuli responsive polymer brush based soft materials have been developed to produce controllable and reversible large deformations of the host substrate. To understand these systems, and improve their functional properties, we study elastic stress distribution and surface stress-curvature relations of a neutral polymer brush grafted on to an elastic beam, made of a soft material. In the strongly stretched brush regime, we combine mean field theory from polymer physics with a continuum mechanics model and show that the residual stress variation is a quartic function of distance from the grafting surface, with maximum stress occurring at the grafted surface. Idealizing the brush as a continuum elastic surface layer with residual stress, we derive a closed form expression for surface stress and the surface elasticity of the layer as a function of brush parameters, such as graft density and molecular weight. The generalized continuum beam model accounts for the Young-Laplace and Ogden-Steigman curvature elasticity correction terms, and yields a surface stress-curvature relation, which contains existing relations in the literature as special cases. Further, we report experiments on a thermoresponsive random copolymer brush, Poly(N- isopropylacrylamide)-co-Poly(N,N-Dimethylacrylamide) (PNIPAm-co-PDMA) brush, grafted on one side of a plasticized pPVC thin film. Estimated surface stress from measured curvature is on the order of $-10~N/m$, and it decreases gradually, and reversibly, with increasing ambient temperature from $15~^\circ{}C$ to $55~^\circ{}C$.
Extended superspace, higher derivatives and SL(2, Z) duality
Creators: name: Henningson, M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the low-energy effective action for the Coulomb phase of an $N = 2$ supersymmetric gauge theory with a rank one gauge group. The $N = 2$ superspace formalism is naturally invariant under an $SL(2, {\bf Z})$ group of duality transformations, regardless of the form of the action. The leading and next to leading terms in the long distance expansion of the action are given by the holomorphic prepotential and a real analytic function respectively. The latter is shown to be modular invariant with respect to $SL(2, {\bf Z})$.
description: Some added clarifications and comments; to appear in Nucl. Phys. B
Nippobodes flagellifer Chen & Wang 2007
Creators: name: LIU, DONG
name: YI, TIAN-CI
name: XU, YUN
name: ZHANG, ZHI-QIANG
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Nippobodidae
Nippobodes
Nippobodes flagellifer

description: Nippobodes flagellifer Chen & Wang, 2007: 54
— Holotype (NZMC, W-96-4), litter under broadleaf forest, Dinghu Mt., Zhaoqing City, Guangdong Province, P. R. China (23.1°N, 112.5°E).
description: Published as part of LIU, DONG, YI, TIAN-CI, XU, YUN & ZHANG, ZHI-QIANG, 2013, Hotspots of new species discovery: new mite species described during 2007 to 2012, pp. 1-102 in Zootaxa 3663 (1) on page 75, DOI: 10.11646/zootaxa.3663.1.1, http://zenodo.org/record/5630595
The roles of Prostanoid EP receptors in the control of contractions of human myometrium
Creators: name: Arulkumaran, Shankari
Publisher: name: Imperial College London
Year: 2011

description: The primary function of the uterus during pregnancy is to harbour the growing fetus in a quiescent environment. Upon maturation of the fetus, the uterus generates forceful contractions during labour. Prostaglandins are central in the parturition process. PGE2 in particular, is produced in large quantities by fetal membranes and possible roles include cervical ripening and the stimulation of uterine contractions. PGE2 exhibits a wide spectrum of physiological actions depending on the distribution and subtypes of EP receptors. EP1 and EP3 mediate contractions, but there is no consensus about their relative importance. Preliminary experiments were undertaken to examine the possible expression patterns of EP1 and EP3. The expression data showed there to be no significant changes between the localisation in upper or lower segment biopsies using both RNA and protein samples. However, there was a labour associated change seen in EP3 isoform expression at mRNA level together with changes in the protein expression of EP3 in the lower segment using immunofluorescence. Given that the expression studies suggest that it is the EP3 receptor, and not the EP1 receptor, that is most important in myometrial contractility, I established an in vitro tissue bath to conduct functional studies examining contractility in upper and lower segment myometrial biopsies. My data demonstrated that stretch of term human myometrium results in spontaneous contractions. There was no difference between upper and lower segment myometrium, so subsequent experiments were conducted on lower segment biopsies. The addition of acetyl salicylic acid (a non-selective COX inhibitor) did not completely stop spontaneous contractility but reduced the total work done significantly. This could be reversed by add back of PGE2. Prostaglandins are therefore significant but not crucial for spontaneous contractility. Both PGE2 and PGF2α increased the total work done significantly compared to spontaneous contractions; E2 more so than F2α. The PGF2α antagonist did not inhibit spontaneous contractions, but did inhibit PGF2α induced contractions. The EP1 antagonist did not inhibit spontaneous contractions but EP3 antagonist did. These results suggest that an EP3 antagonist is a better candidate as a new tocolytic compound compared to FP or EP1 antagonist.
MPEC 2024-U75 : 2024 UL1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 UL1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: ADCO, Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Cart. 23 (G 127), 310 folios, f. 00384
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2011
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00384, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Troisième cartulaire de Saint-Étienne de Dijon (XVIe), Archives départementales de la Côte-d'Or, Cart. 23 (G 127), 310 folios, f. 00384, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Ab initio calculations with a nonspherical Gaussian basis set: Excited states of the hydrogen molecule
Creators: name: Detmer, T.
name: Schmelcher, P.
name: Cederbaum, L. S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A basis set of generalized nonspherical Gaussian functions (GGTOs) is presented and discussed. As a first example we report on Born-Oppenheimer energies of the hydrogen molecule. Although accurate results have been obtained, we conclude that H_2 is too 'simple' to allow for a substantial gain by using nonspherical functions. We rather expect that these functions may be particularly useful in calculations on large systems. A single basis set of GGTOs was used to simultaneously calculate the potential energy curves of several states within each subspace of {1,3}Σ_{g,u} symmetry. We hereby considerd the entire region of internuclear distances 0.8 < R < 1000 a.u. In particular the results for the fourth up to sixth electronic states show a high accuracy compared to calculations which invoke explicitely correlated functions, e.g. the relative accuracy is at least of the order of magnitude of 10^{-5}a.u. Energies for the 4 ^1Σ_u^+ and 4-6 ^3Σ_u^+ were improved and accurate data for the 6 ^3Σ_g^+, 5 ^1Σ_u^+, and 6 ^1Σ_u^+ state are, to the best of the authors knowledge, presented for the first time. Energy data for the seventh up to the nineth electronic state within each subspace were obtained with an estimated error of the order of magnitude of 10^{-4}a.u. The 7 ^1Σ_g^+ and the 6 ^1Σ_u^+ state were found to exhibit a very broad deep outer well at large internuclear distances.
description: 4 figures, subm.to J.Chem.Phys
Exploiting the Anaerobic Expression of Pyruvate Dehydrogenase for the Production of Biofuels
Creators: name: Crowhurst, Nicola
Publisher: name: Imperial College London
Year: 2011

description: The Pyruvate dehydrogense complex (PDH) is a primarily aerobic enzyme which catalyses pyruvate to acetyl-CoA and carbon dioxide. Its counterpart in anaerobic metabolism is pyruvate formate lyase (Pfl) which converts pyruvate to acetyl-CoA and formate. A novel fermentation pathway involving PDH rather than Pfl (or equivalent), which retains the reducing equivalents from pyruvate oxidation, could provide a novel route for ethanol production, as well as changes in redox balance opening up opportunities for the production of higher alcohols such as butanol. Utilising PDH for the production of biofuels has been investigated in three microorganisms: Geobacillus thermodenitrificans, Bacillus subtilis, and E. coli. Geobacillus thermodenitrificans does express Pfl, thus PDH is always active in the G. thermodenitrificans regardless of whether the bacterium is growing in aerobic or anaerobic conditions. To utilise this PDH in the production of ethanol a bi-functional alcohol dehydrogenase (AdhE) was introduced to G. thermodenitrificans K1041. Further optimisation of ethanol production was achieved by knocking-out lactate dehydrogenase (Ldh), which would otherwise compete with ethanol for flux from acetyl-CoA, and activity of the PDH promoter verses potential alternative promoters to increase the expression of the native PDH was investigated. Like G. thermodenitrificans, Bacillus subtilis also does not have a PFL pathway, but does have a native Adh so can undergo fermentation, albeit poorly. To increase ethanol production competing fermentation pathways were knocked-out, however this resulted in strains which were unable to grow anaerobically. The activity of the native PDH promoter was investigated, and PDH subsequently upregulated. The production of 1-butanol from B. subtilis was also achieved using expression of Clostridial genes encoding a butanol synthetic pathway from a plasmid and from chromosomal integrations. PDH in Gram-negative bacteria such as E. coli are not active during anerobic growth due to fermentation resulting in elevated levels of intracellular NADH; which in turn triggers negative feedback inhibition of PDH. A consequence of this is E. coli strains which are engineered to produce increased titres of ethanol by knocking-out pfl are unable to grow anaerobically. To alleviate this problem a PDH from gram-positive bacteria was expressed in E. coli. The effect of these PDH was also used to assess their potential benefits on 1-butanol in E. coli, by introducing Clostridial genes encoding a butanol synthetic pathway via plasmids.
MimPIDD Lesson College - Attribute Coding Activity - Coding Table
Creators: name: Kamp-Whittaker, April
name: Hegmon, Michelle
Year: 2020

description: Student attribute coding table for use with the student workbook for the college and university level attribute analysis and coding lesson. This is designed to pair with other educational lessons developed as part of the National Endowment for the Humanities two-year grant (2018-2019) entitled “From Library to Laboratory: Developing Tools to Enhance the Use of Digital Archaeological and Other Humanities Collections.”
Developing novel multi-component coupling reactions of arynes
Creators: name: Jones, Elizabeth Pearl
Publisher: name: Imperial College London
Year: 2011

description: The development of novel three-component coupling reactions of arynes is under investigation. The emphasis is on efficient, concise and elegant routes to small, highly functionalised aromatic molecules. In order to extend the three-component coupling methodology to the previously underexploited 2,3-pyridyne intermediate 2, several strategies will be described, including the development and reactivity of novel halogen-metal exchange aryne precursor 1. [Molecular structure diagrams appear here. To view, please open pdf attachment]. Approaches towards the use of arynes 4 as electrophilic α-arylating reagents for amino acids are also described. In order to circumvent undesired side-reactions it was found necessary to use lithiated Schöllkopf’s bis-lactim ether 3 as the nucleophilic glycine equivalent. This route will be introduced and its development described, concluding in the presentation of a range of chiral, arylglycine derivatives, 6, using this methodology. The extension of this technique to the synthesis of quaternary Schöllkopf adducts and the resulting hydrolysis reactions are also illustrated. [Molecular structure diagrams appear here. To view, please open pdf attachment]. In addition, the discovery of an interesting side reaction, involving the use of nitroacetates 7 and arynes 4 for the synthesis of iso-indolinones 9 will be discussed. [Molecular structure diagrams appear here. To view, please open pdf attachment].
Plasmonic multiple exciton generation
Creators: name: Kong, Jiantao
name: Wu, Xueyuan
name: Wang, Xin
name: Naughton, Michael J
name: Kempa, Krzysztof
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that bi-exciton formation can be highly efficient in a solar cell with the semiconductor absorber filled with an array of metallic nanoparticles having plasmonic resonance tuned to the semiconductor gap energy. This process can be viewed as plasmon-enhanced multiple exciton generation (PMEG), with the resulting cell efficiency exceeding the Shockley-Queisser limit. We demonstrate, that efficiency of the PMEG process, increases with decreasing of the semiconductor gap size, and illustrate that by considering in detail three systems with gradually decreasing gap size: GaAs, Si and Ge.
description: 4 figures
The Roles of Laparoscopic Liver Resection and Hypoxia Inducible Factor in the Pathophysiology of Liver cancer
Creators: name: Healey, Andrew James
Publisher: name: Imperial College London
Year: 2011

description: In the last 20 years laparoscopic liver resection has been increasingly practised. However its role in the treatment of liver cancer remains under scrutiny. I performed a pilot study at a specialist HPB unit assessing the results of the laparoscopic resections of one surgeon and comparing them to the results of matched cases on whom he had performed open resection. The resection technique was radiofrequency assisted resection pioneered in this unit. I also analysed the resected tissue to investigate any differential effect on cell characteristics of the 2 operative techniques. Operative time was significantly longer in laparoscopic cases and time to recurrence of R0 resections significantly shorter. Resected tissue demonstrated significantly higher levels of the hypoxia inducible factor-2 and CD10, a recognised poor prognostic marker in primary colorectal tumours. I hypothesised that livers resected laparoscopically are under a relative hypoxia because of the increased intraabdominal pressure associated with the pneumoperitoneum and tumours cells therefore have a positive selection advantage. In the setting of longer resection times this may compromise the oncological result of the surgery causing earlier recurrence. Using a established model of HIF activation, I showed that poor prognostic marker CD10 may be a function of hypoxia inducible regulation. Certainly I was able to replicate data from cervical squamous epithelia demonstrating that both in benign, dysplastic and malignant tissue, HIF expression corresponded to a reduced cell E-cadherin expression that may allow a more malignant potential. I also analysed the effect of RF ablation on circulating tumour cells in palliative irresectable cancers and in the context of both open and laparoscopic liver resection. This showed only a transient rise in both resectional techniques, (open and lap) that would unlikely count for the differential oncological outcome previously demonstrated in the pilot study. In keeping with current international opinion, further work is required to verify the role of laparoscopic liver resection in liver cancer.
Elusive extremal graphs
Creators: name: Grzesik, Andrzej
name: Král', Daniel
name: Lovász, László Miklós
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We study the uniqueness of optimal solutions to extremal graph theory problems. Lovasz conjectured that every finite feasible set of subgraph density constraints can be extended further by a finite set of density constraints so that the resulting set is satisfied by an asymptotically unique graph. This statement is often referred to as saying that `every extremal graph theory problem has a finitely forcible optimum'. We present a counterexample to the conjecture. Our techniques also extend to a more general setting involving other types of constraints.
The Effects of Tibial Tray Rotation and Posterior Slope on Knee Kinematics Following Total Knee Replacement
Creators: name: Karim, Amer
Publisher: name: Imperial College London
Year: 2010

description: Aims To determine the effects of tibial component rotation and posterior slope on kinematics following Scorpio CR navigated TKR in cadaver specimens. Methods & Results Knee kinematics were monitored using a validated IR Navigation System. Ten normal comparable cadaver specimens were mounted in a custom rig allowing assessment of kinematics under various loading conditions. The specimens then underwent Navigated TKR. The surgery was performed as per normal operating surgical protocols by an expert knee surgeon. However an augmented tibial component was implanted allowing the researchers to precisely modify its rotation and posterior slope. A pneumatic cylinder attached to the quadriceps tendon was then used to repetitively flex and extend the knee with a variety of applied loads. Kinematics were different after TKR. Increasing posterior slope resulted in increasing posterior position of the femur, particularly at maximum flexion. Posterior slope also resulted in a deviation of the neutral path of motion and alteration of the normal envelope of laxity. Tibial component malrotations over 5 degrees resulted in deviations of the neutral path of motion without affecting the envelope of laxity. Combined malrotations over 10 degrees with posterior slopes over 6 degrees resulted in prosthetic subluxation under certain loading conditions. Discussion Knee kinematics are different after TKR. Increasing internal and external malrotation as well as the addition of posterior slope resulted in deviations of TKR kinematics through alteration of the neutral path of movement and or the envelope of laxity. Combined misalignments of slope and rotation resulted in the greatest deviations from normal kinematics, and in some cases, prosthetic subluxation. Incompatibilities of alignment may result in increased ligament tension and component articulation dysfunction that may contribute to premature wear and loosening. Surgeons should be aware of this when considering the addition of posterior slope or assessing tibial component positioning in TKR.
Optical Second Harmonic Generation Studies of Electrochemical Interfaces
Creators: name: Baten, Shah Mohammad Abdul
Publisher: name: Imperial College London
Year: 2012

description: Electrochemical oxidation of metal electrodes in aqueous media has been examined by in situ optical second harmonic generation (SHG), a nonlinear optical technique of second order. Simultaneous SHG and cyclic voltammetry experiments were carried out on Cu electrodes in alkaline media. The SHG response was found to be sensitive as Cu was oxidised first to Cu2O and then to CuO. The formation of Cu2O causes resonant contribution to the SHG signals due to the band-gap of Cu2O. As the upper layer, CuO is formed; it generates an electric-field induced second harmonic (EFISH) response. When the oxides layers are reduced, the SHG intensity changes markedly. The correlation of oxidation and reduction charge with the SHG signal intensity is found to be a useful method to investigate the oxide formation. The oxidation of Au electrodes in acidic media has been investigated. The initial growth of the compact (or α-) oxide causes a decrease in SHG intensity which is suggested to be the effect of the oxide growth on surface plasmons originated from the d-electrons in Au. When the thicker hydrous (or β-) oxide layers are formed at constant potentials on top of the α-oxide, the reductions of them are accompanied by remarkable sharp peak in the SHG response that appear just before any reduction charges begin to pass. As the β-oxide layer gets thicker with longer oxidation time and then reduced, the initial peak evolves into two before merging to form one broad peak. The SHG peaks are suggested to be linked to an order-disorder transition phenomenon at the α-/β-oxide interface; or it can also be due to the presence of the surface traps. These investigations have shown that the SHG technique with its inherent submonolayer sensitivity can be a useful technique to study electrochemical oxidation of metal electrodes.
Dimensional Transmutation and Dimensional Regularization in Quantum Mechanics. I. General Theory
Creators: name: Camblong, Horacio E.
name: Epele, Luis N.
name: Fanchiotti, Huner
name: Canal, Carlos A. Garcia
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This is the first in a series of papers addressing the phenomenon of dimensional transmutation in nonrelativistic quantum mechanics within the framework of dimensional regularization. Scale-invariant potentials are identified and their general properties are derived. A strategy for dimensional renormalization of these systems in the strong-coupling regime is presented, and the emergence of an energy scale is shown, both for the bound-state and scattering sectors. Finally, dimensional transmutation is explicitly illustrated for the two-dimensional delta-function potential.
description: 28 pages. To appear in Annals of Physics
Vacancies in Graphene : Dirac Physics and Fractional Vacuum Charges
Creators: name: Ovdat, Omrie
name: Don, Yaroslav
name: Akkermans, Eric
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The study of vacancies in graphene is a topic of growing interest. A single vacancy induces a localized stable charge of order unity interacting with other charges of the conductor through an unscreened Coulomb potential. It also breaks the symmetry between the two triangular graphene sublattices hence inducing zero energy states at the Dirac points. Here we show the fractional and pseudo-scalar nature of this vacancy charge. A continuous Dirac model is presented which relates zero modes to vacuum fractional charge and to a parity anomaly. This relation constitutes an Index theorem and is achieved by using particular chiral boundary conditions, which map the vacancy problem onto edge state physics. Vacancies in graphene thus allow to realize prominent features of $2+1$ quantum electrodynamics but without coupling to a gauge field. This essential difference makes vacancy physics relatively easy to implement and an interesting playground for topological switching.
description: 7 pages, 17 supplementary pages. 4 figures, 2 supplementary figures. V2
Additional file 6 of TCF7/SNAI2/miR-4306 feedback loop promotes hypertrophy of ligamentum flavum
Creators: name: Duan, Yang
name: Li, Jianjun
name: Qiu, Sujun
name: Ni, Songjia
name: Cao, Yanlin
Publisher: name: figshare
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 6: Table S2. The sequences of shRNAs or miR-4306 inhibitor/mimics used in this study.
Numerical modelling of basin-scale impact crater formation
Creators: name: Potter, Ross William Kerrill
Publisher: name: Imperial College London
Year: 2012

description: Understanding of basin-scale crater formation is limited; only a few examples of basin-scale craters exist and these are difficult to access. The approach adopted in this research was to numerically model basin-scale impacts with the aim of understanding the basin-forming process and basin structure. Research was divided into: (1) investigating early stage formation processes (impactor survivability), (2) investigating later stage formation processes (excavation and modification) and basin structure, and (3) constraining an impact scenario for the largest lunar crater, the South Pole-Aitken Basin. Various impact parameters were investigated, quantifying their effect on the basin-forming process. Simulations showed impactor survivability, the fraction of impactor remaining solid during the impact process, greatly increased if the impactor was prolate in shape (vertical length > horizontal length) rather than spherical. Low (≲15 km/s) impact velocities and low impact angles (≲30 ) also noticeably increased survivability. Lunar basin-scale simulations removed a significant volume of crustal material during impact, producing thinner post-impact crustal layers than those suggested by gravity-derived basin data. Most simulations formed large, predominantly mantle, melt pools; inclusion of a steep target thermal gradient and high internal temperatures greatly influenced melt volume production. Differences in crustal thickness between simulations and gravity-derived data could be accounted for by differentiation of the voluminous impact-generated melt pools, predicted by the simulations, into new crustal layers. Assuming differentiation occurs, simulation results were used to predict features such as transient crater size for a suite of lunar basins and tentatively suggest lunar thermal conditions during the basin-forming epoch. Additional simulations concerned the formation of the South Pole-Aitken Basin. By constraining simulation results to geochemical and gravity-derived basin data, a best-fit impact scenario for the South Pole-Aitken Basin was found.
Oral history interview with I. Bernard Cohen 1985
Publisher: name: Columbia University
Year: 2019
Subjects: Educators
Endowment of research
Science--History
Statistical hypothesis testing
Education--Research

description: Impressions, Spencer Foundation, Tom James; work in history of science; conception of scientific revolution; research in statistical thinking; educational background; influences on work and development; work on images and intellectual, scientific progress; future projects.
Asymmetric synthesis of tetrahydroquinolines via aza-Michael reactions
Creators: name: Taylor, Laura
Publisher: name: Imperial College London
Year: 2011

description: The tetrahydroquinolines structural unit is found in a number of natural products that exhibit a variety of biological activities including anti-allergic, anti-inflammatory and antitumour. As a result there is significant interest in their synthesis. This PhD thesis describes the work undertaken in the development of a new synthetic route that can be applied to the asymmetric synthesis of structurally diverse tetrahydroquinolines. The introductory chapter outlines the main current synthetic strategies towards tetrahydroquinolines and their application to the synthesis of some biologically interesting compounds. Chapter 2 discusses work on the total asymmetric synthesis of the Galipea alkaloids. An aza-Michael reaction was used to install the required stereochemistry. Extensive optimisation of the aza-Michael reaction resulted in high enantioselectivities, with optically pure material obtained upon recrystallisation. Various synthetic procedures were investigated for formation of the tetrahydroquinoline ring system and the remainder of the synthesis, with the Galipea alkaloids obtained from a common precursor. Work towards the formal synthesis of the Martinelline alkaloids, using the aza-Michael reaction to set the first stereocentre, is detailed in Chapter 3. A range of different α, β-unsaturated carbonyl and anilines were investigated for the aza-Michael reaction, with 85% enantioselectivity obtained on optimisation. Formation of the tetrahydroquinoline core was achieved and the installation of the second chiral centre investigated. Chapter 4 describes any miscellaneous work conducted, including preliminary investigations towards the synthesis of levonantradol. The last Chapter contains the experimental procedures and characterisation data for all the compounds synthesised during the course of this project.
Search for flavor changing neutral current interactions of the top quark in final states with a photon and additional jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for the production of a top quark in association with a photon and additional jets via flavor changing neutral current interactions is presented. The analysis uses proton-proton collision data recorded by the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 138 fb$^{-1}$. The search is performed by looking for processes where a single top quark is produced in association with a photon, or a pair of top quarks where one of the top quarks decays into a photon and an up or charm quark. Events with an electron or a muon, a photon, one or more jets, and missing transverse momentum are selected. Multivariate analysis techniques are used to discriminate signal and standard model background processes. No significant deviation is observed over the predicted background. Observed (expected) upper limits are set on the branching fractions of top quark decays: $\mathcal{B}$(t $\to$ u$γ$) $\lt$ 0.95 $\times$ 10$^{-5}$ (1.20 $\times$ 10$^{-5}$) and $\mathcal{B}$(t $\to$ c$γ$) $\lt$ 1.51 $\times$ 10$^{-5}$ (1.54 $\times$ 10$^{-5}$) at 95% confidence level, assuming a single nonzero coupling at a time. The obtained limit for $\mathcal{B}$(t $\to$ u$γ$) is similar to the current best limit, while the limit for $\mathcal{B}$(t $\to$ c$γ$) is significantly tighter than previous results.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/TOP-21-013 (CMS Public Pages)
MIMPIDD Users' Guide
Creators: name: Hegmon, Michelle
Year: 2020
Subjects: Mimbres River Valley
Mogollon
Mimbres
Ceramic
MimPIDD
Collections Research

description: The Mimbres Pottery Images Digital Database (MimPIDD) is a collection of images and data on more than 10,000 Mimbres pottery vessels. MimPIDD digital images illustrate the painted designs on each vessel, along with associated descriptive information about archaeological context, temporal style, and vessel form and size. This document provides additional background to MIMPIDD, describes how data are coded in the database, and guides the effective and ethical use of MIMPIDD. The information in the guide is applicable for the online search function, the public database, as well as the downloadable database accessible by permission only.
Gauge Invariance and Finite Temperature Effective Actions of Chern-Simons Gauge Theories with Fermions
Creators: name: Cabra, Daniel
name: Fradkin, Eduardo
name: Rossini, Gerardo L.
name: Schaposnik, Fidel A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the behavior of theories of fermions coupled to Chern-Simons gauge fields with a non-abelian gauge group in three dimensions and at finite temperature. Using non-perturbative arguments and gauge invariance, and in contradiction with perturbative results, we show that the coefficient of the Chern-Simons term of the effective actions for the gauge fields at finite temperature can be {\it at most} an integer function of the temperature. This is in a sense a generalized no-renormalization theorem. We also discuss the case of abelian theories and give indications that a similar condition should hold there too. We discuss consequences of our results to the thermodynamics of anyon superfluids and fractional quantum Hall systems.
description: Revtex, multicol
Development of a Pseudo Non-LTE model for Z-pinch simulations
Creators: name: Niasse, Nicolas-Pierre Louis
Publisher: name: Imperial College London
Year: 2011

description: Predicting the energetic and spectral characteristics of Z-pinch sources is a very delicate task. Z-pinch plasmas conditions are spread across a wide range of parameter space and often far from Local Thermodynamic Equilibrium (LTE). In addition, the increasing optical depth of the plasma at stagnation can have a strong influence on its own dynamics, suggesting that simultaneous solution of both the magnetohydrodynamic (MHD) and radiative response is required. Unfortunately, the estimation of the frequency and time dependent radiative properties of Z-pinches is computationally challenging and the recent improvements made to the parallel architecture of the 3D resistive Eulerian MHD code GORGON have only reinforced the strong emphasis already placed on optimizing the physics solvers used in Z-pinch simulations. To address these issues, we have developed a simple and fast pseudo NLTE code based on a Screened Hydrogenic Model (SHM) that can be run in-line with GORGON or as a post processing tool with synthetic spectra capabilities. Making use of a computationally inexpensive modification of the Saha equation, this highly optimized code has demonstrated a good ability to represent Non-LTE plasma conditions. In order to handle the amount of data generated by the spectral treatment of the billions of numerical cells constituting the simulation grids, an original data structure derived from a self-balancing binary search tree has been developed, enabling the use of Non-LTE DCA calculations in a large scale three dimensional environment for the first time. The implementation of this model is described in detail and comparisons with a commercial package are offered. Results from Z-pinch simulations performed with the new code are discussed and possible future improvements are presented.
A new type of large-scale signature change in emergent modified gravity
Creators: name: Bojowald, Martin
name: Duque, Erick I.
name: Hartmann, Dennis
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Emergent modified gravity presents a new class of gravitational theories in which the structure of space-time with Riemannian geometry of a certain signature is not presupposed. Relying on crucial features of a canonical formulation, the geometry of space-time is instead derived from the underlying dynamical equations for phase-space degrees of freedom together with a crucial covariance condition. Here, a large class of spherically symmetric models is solved analytically for Schwarzschild-type black-hole configurations with generic modification functions, using a variety of slicings that explicitly demonstrates general covariance. For some choices of the modification functions, a new type of signature change is found and evaluated. In contrast to previous versions discussed for instance in models of loop quantum gravity, signature change happens on timelike hypersurfaces in the exterior region of a black hole where it is not covered by a horizon. A large region between the horizon and the signature-change hypersurface may nevertheless be nearly classical, such that the presence of a signature-change boundary around Lorentzian space-time, or a Euclidean wall around the universe, is consistent with observations provided signature change happens sufficiently far from the black hole.
description: 29 pages, 1 figure
Pilot-wave dynamics of two identical, in-phase bouncing droplet
Creators: name: Valani, Rahil N.
name: Slim, Anja C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: A droplet bouncing on the surface of a vibrating liquid bath can move horizontally guided by the wave it produces on impacting the bath. The wave itself is modified by the environment, and thus the interactions of the moving droplet with the surroundings are mediated through the wave. This forms an example of a pilot-wave system. Taking the Oza Rosales Bush description for walking droplets as a theoretical pilot-wave model, we investigate the dynamics of two interacting identical, in-phase bouncing droplets theoretically and numerically. A remarkably rich range of behaviors is encountered as a function of the two system parameters, the ratio of inertia to drag, \k{appa}, and the ratio of wave forcing to drag, \b{eta}. The droplets typically travel together in a tightly bound pair, although they unbind when the wave forcing is large and inertia is small or inertia is moderately large and wave forcing is moderately small. Bound pairs can exhibit a range of trajectories depending on parameter values, including straight lines, sub-diffusive random walks, and closed loops. The droplets themselves may maintain their relative positions, oscillate towards and away from one another, or interchange positions regularly or chaotically as they travel. We explore these regimes and others and the bifurcations between them through analytic and numerical linear stability analyses and through fully nonlinear numerical simulation.
description: 17 pages, 17 figures
title:  EXPERT PERCEPTIONS OF NEEDS OF PREGNANT INDIVIDUALS WITH SUBSTANCE USE DISORDER IN KENTUCKY
title: A QUALITATIVE MULTIPLE CASE STUDY
titleType: Subtitle
Creators: name: Latham, Emma
Publisher: name: University of Kentucky Libraries
Year: 2024
Subjects: classificationCode: 6.4
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: Substance misuse is a pandemic with far reaching effects on those personally affected, their families, and their communities. Kentucky has one of the highest rates of substance use disorder (SUD) in the country, and most research has focused on how to help men in recovery. There is very little research regarding how to support pregnant individuals with SUD. The purpose of this qualitative thesis was to identify the perceived needs of pregnant individuals with SUD, define characteristics of effective care, and learn how music therapists can support this population in substance use rehabilitation settings from the perspectives of experienced professionals. Because the needs of these individuals can vary by geographic region and according to state healthcare laws, this research was situated in Kentucky. I conducted a multiple-case study and interviewed four professionals from different fields: music therapy, nursing care, social work, and child life. The primary research question was: “How can music therapists support pregnant individuals with SUD in substance use rehabilitation settings in Kentucky?” Additionally, sub-questions were: “What are the needs of pregnant individuals with SUD in Kentucky?” and “What are the characteristics of effective care during pregnancy with SUD?” Using Thematic Analysis, four themes emerged from the data: 1) “you don’t matter,” 2) lack of support, 3) knowledge and skills of the clinician, and 4) empathy and empowerment. Findings from this study inform the use of music therapy with this population in Kentucky and characterize effective care of pregnant individuals with SUD.
description: © 2024 Emma Foret Latham
Heterotic M-Theory Cosmology in Four and Five Dimensions
Creators: name: Braendle, Matthias
name: Lukas, Andre
name: Ovrut, Burt A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study rolling radii solutions in the context of the four- and five-dimensional effective actions of heterotic M-theory. For the standard four-dimensional solutions with varying dilaton and T-modulus, we find approximate five-dimensional counterparts. These are new, generically non-separating solutions corresponding to a pair of five-dimensional domain walls evolving in time. Loop corrections in the four-dimensional theory are described by certain excitations of fields in the fifth dimension. We point out that the two exact separable solutions previously discovered are precisely the special cases for which the loop corrections are time-independent. Generically, loop corrections vary with time. Moreover, for a subset of solutions they increase in time, evolving into complicated, non-separating solutions. In this paper we compute these solutions to leading, non-trivial order. Using the equations for the induced brane metric, we present a general argument showing that the accelerating backgrounds of this type cannot evolve smoothly into decelerating backgrounds.
description: 15 pages, Latex, 1 eps figure
Leptonic signatures of color-sextet scalars II: Exploiting unique large-$E_{\text{T}}^{\text{miss}}$ signals at the LHC
Creators: name: Carpenter, Linda M.
name: Schwind, Katherine
name: Murphy, Taylor
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The diverse and distinct collider phenomenology of color-sextet scalars motivates thorough investigation of their effective couplings to the Standard Model at the LHC. Some of the more unique sextet signals involve not only jets but also leptons. In previous work, we proposed an LHC search for color-sextet scalars in a channel with jets and a hard opposite-sign lepton pair, which results from a dimension-six coupling. In this sequel we study the counterpart processes with neutrinos, which produce jets in association with missing transverse energy ($E_{\text{T}}^{\text{miss}}$) in addition to possible leptons. We consider multiple search channels, including both single and pair sextet production, all characterized by significant missing energy and some featuring distinctive kinematic features. Our multifaceted study consists of three reinterpreted existing searches and a joint-likelihood analysis designed by us to maximize HL-LHC sensitivity to single sextet production. We show that our dedicated strategy in the jets + lepton + $E_{\text{T}}^{\text{miss}}$ channel can supersede today's limits from reinterpreted searches, and we make sensitivity projections for the HL-LHC. Altogether, our analysis can exclude sextet scalars lighter than 4.4 TeV or probe effective cutoffs as high as 16.8 TeV.
description: 16 pages, 11 figures. Updated to resemble Phys. Rev. D Version of Record
title: Fiche de présentation de Farida Souiah
Creators: name: LabexMed
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2017

description: Fiche de présentation de Farida Souiah, post-doctorante LabexMed 2017 accueillie au LAMES
title: ADCO, Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Cart. 198-01 (11 H 1055), 185 folios, f. 0281
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2019
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: cartulaire
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 198-01 (11 H 1055), 185 folios, f. 0281, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Cîteaux pour les domaines de Saint-Jean de Losne et Losne (XVIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 198-01 (11 H 1055), 185 folios, f. 0281, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: https://www.geonames.org/3024876
description: Provenance: http://www.idref.fr/030974844/id
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb12228351v
description: Provenance: abbaye de Cîteaux
description: Provenance: http://www.wikidata.org/entity/Q843261
Nippobodes peniculatus Chen & Wang 2007
Creators: name: LIU, DONG
name: YI, TIAN-CI
name: XU, YUN
name: ZHANG, ZHI-QIANG
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Nippobodidae
Nippobodes
Nippobodes peniculatus

description: Nippobodes peniculatus Chen & Wang, 2007: 55
— Holotype (NZMC, W-90-65), litter under forest, Shejiaping, Longxi Mt., Jiangle County, Fujian Province, P. R. China (26.5°N, 117.2°E).
description: Published as part of LIU, DONG, YI, TIAN-CI, XU, YUN & ZHANG, ZHI-QIANG, 2013, Hotspots of new species discovery: new mite species described during 2007 to 2012, pp. 1-102 in Zootaxa 3663 (1) on page 75, DOI: 10.11646/zootaxa.3663.1.1, http://zenodo.org/record/5630595