104 research outputs found
Pilk Richard Viidalepa perekonnaloole
No full textRichard Viidalepp (Widebaum before Estonianising his name, and later Viidebaum; Jan. 23, 1904 - June 3, 1986), the famous Estonian folklorist, was born in the Jalapuu farm in the village of Nurmsi in Central Estonia. The same farm was the home of Urve Buschmann, the author of the article and R. Viidalepp's niece. On the basis of the 1722 list of inhabitants in the Särgavere estate and the registers of the Järva Peetri congregation, the documented genealogy of Viidalepp's family starts with Jüri Jalapuu and his wife Els (?1730-?1761). In more recent registers their son Jüri (?1771-1843) already appears under the name Widebaum. The family was a typical Estonian family, including farmers, handicraftsmen, inventive technicians, later also intellectuals and artists. Some emigrated (the Finnish and American branches of the Viidebaums) and some were deported to Siberia. The fate of family members and descriptions of family history are illustrated by Richard Viidalepp's letters and family photographs. The last Viidalepps born in the Jalapuu farm moved to Tallinn in 1950
A fluorescent host-guest complex of cucurbituril in solution: a molecular Jack O'Lantern
No full textFluorescence enhancement of a probe molecule in solution by the container molecule cucurbituril (CB) is reported for the first time. The fluorescence of the probe 2-anilinonaphthalene-6-sulfonate (2,6-ANS) in aqueous Na2SO4 solution is found to increase by a maximum factor of 5.0 upon addition of cucurbituril. This fluorescence enhancement is the result of the formation of a host-guest inclusion complex, in which the guest 2,6-ANS is incorporated inside the cavity of the host, cucurbituril. Measurement of the enhancement as a function of cucurbituril concentration yielded a value of the equilibrium constant (K) of 52 +/- 10 M-1. It is proposed that the mode of inclusion involves the phenyl group of the 2,6-ANS, because of the relatively small size of the cucurbituril cavity. It is further proposed that the observed enhancement is a result of loss of rotational mobility of the phenyl ring relative to the naphthyl fluorophore of 2,6-ANS upon inclusion of the phenyl ring, Since the name cucurbituril is derived from the Latin word for "pumpkin," this fluorescent host-guest complex is referred to as a "molecular Jack O'Lantern," with the 2,6-ANS serving as the candle.PT: J; CR: BEHREND R, 1905, LIEBIGS ANN CHEM, V339, P1 BORTOLUS P, 1996, ADV PHOTOCHEMISTRY P, P1 BUSCHMANN HJ, 1992, J INCLUS PHENOM MOL, V14, P91 BUSCHMANN HJ, 1997, J INCLUS PHENOM MOL, V29, P167 BUSCHMANN HJ, 1998, THERMOCHIM ACTA, V317, P95 BUSCHMANN HJ, 1999, J PHOTOCH PHOTOBIO A, V121, P99 CINTAS P, 1994, J INCLUS PHENOM MOL, V17, P205 CRAM DJ, 1997, CONTAINER MOL THEIR DANTZ DA, 1998, SUPRAMOL CHEM, V9, P79 DELAPENA AM, 1993, J INCLUS PHENOM MOL, V15, P131 DIAMOND D, 1996, CHEM SOC REV, V25, P15 FREEMAN WA, 1981, J AM CHEM SOC, V103, P7367 HOFFMANN R, 1994, J CHEM SOC FARADAY T, V90, P1507 JEON YM, 1996, J AM CHEM SOC, V118, P9790 KOSOWER EM, 1975, J AM CHEM SOC, V97, P2167 KOSOWER EM, 1978, J AM CHEM SOC, V100, P4179 LI S, 1992, CHEM REV, V92, P1457 MOCK WL, 1983, J ORG CHEM, V48, P3618 MOCK WL, 1995, TOP CURR CHEM, V175, P1 MOCK WL, 1996, COMPREHENSIVE SUPRAM, V2, P477 WAGNER BD, 1998, J PHOTOCH PHOTOBIO A, V114, P151 WAGNER BD, 1999, J PHYS CHEM B, V103, P10114 WAGNER BD, 2000, J INCL PHENOM MACRO, V38, P467 WHANG DM, 1998, J AM CHEM SOC, V120, P4899; NR: 24; TC: 16; J9: CAN J CHEM; PG: 4; GA: 473RESource type: Electronic(1
Sledgehamr: Simulating Scalar Fields with Adaptive Mesh Refinement
No full textUnderstanding the nonlinear dynamics of coupled scalar fields often necessitates simulations on a 3D mesh. These simulations can be computationally expensive if a large scale separation is involved. A common solution is adaptive mesh refinement, which, however, greatly increases a simulation's complexity. In this work, we present sledgehamr , an AMReX -based code package to make the simulation of coupled scalar fields on an adaptive mesh more accessible. Compatible with both GPU and CPU clusters, sledgehamr offers a flexible and customizable framework. While the code had been primarily developed to evolve axion string networks, this framework enables various other applications, such as the study of gravitational waves sourced by the dynamics of scalar fields
Heavy resonance hunting at the LHC
No full textThe need for new physics beyond the Standard Model is apparent given all the evi- dence collected in experiments throughout the last decades. Many new physics mod- els, that try to explain the deviations from the Standard Model, predict heavy particles that are accessible at the Large Hadron Collider (LHC). Although there are different ways to discover new particles, resonance searches belong to one of the most powerful types of analyses. In this dissertation, we will present various aspects of resonance searches and how they can be used to constrain physics beyond the Standard Model.
By recasting an existing LHC search we determine limits on a lepton flavour violat- ing two Higgs doublet model. For a quark flavour violating two Higgs doublet model we develop a new superior analysis for a top plus two Higgs final state and compare the results to existing and projected limits.
In some circumstances the pair production channel of a new heavy state provides a model-independent way to test the particle’s existence, whereas the single resonance production mode would be model-dependent. This is the case for a massive coloured octet vector. We design a search dedicated to find such a pair produced resonance if neither a subsequent decay to top quarks nor to lighter quarks dominates.
Furthermore, we determine the prospects of spin discrimination for a heavy reso- nance decaying to two massive bosons. We study the implications of jet substructure techniques on angular correlations that are vital for such a discrimination. Using a fully hadronic final state we determine the projected reach at the LHC.
Occasionally, a resonance cannot be seen directly since the final state particles may be dark matter. We use a displaced and prompt lepton jet analysis to study how effects of a parton shower in the dark sector can yield information about the underlying physics. We also provide a semi-analytic description of such a dark shower.190 Seite
Heavy resonance hunting at the LHC
No full textThe need for new physics beyond the Standard Model is apparent given all the evi- dence collected in experiments throughout the last decades. Many new physics mod- els, that try to explain the deviations from the Standard Model, predict heavy particles that are accessible at the Large Hadron Collider (LHC). Although there are different ways to discover new particles, resonance searches belong to one of the most powerful types of analyses. In this dissertation, we will present various aspects of resonance searches and how they can be used to constrain physics beyond the Standard Model.
By recasting an existing LHC search we determine limits on a lepton flavour violat- ing two Higgs doublet model. For a quark flavour violating two Higgs doublet model we develop a new superior analysis for a top plus two Higgs final state and compare the results to existing and projected limits.
In some circumstances the pair production channel of a new heavy state provides a model-independent way to test the particle’s existence, whereas the single resonance production mode would be model-dependent. This is the case for a massive coloured octet vector. We design a search dedicated to find such a pair produced resonance if neither a subsequent decay to top quarks nor to lighter quarks dominates.
Furthermore, we determine the prospects of spin discrimination for a heavy reso- nance decaying to two massive bosons. We study the implications of jet substructure techniques on angular correlations that are vital for such a discrimination. Using a fully hadronic final state we determine the projected reach at the LHC.
Occasionally, a resonance cannot be seen directly since the final state particles may be dark matter. We use a displaced and prompt lepton jet analysis to study how effects of a parton shower in the dark sector can yield information about the underlying physics. We also provide a semi-analytic description of such a dark shower
Collider constraints and new tests of color octet vectors
No full textAbstract We analyze the collider sensitivity for new colored resonances in t t ¯ , b b ¯ , and jj final states. While searches in the single production channel are model-dependent, the pair production rate is model independent and the existing (J J )(J J ) and 4t searches impose strong constraints on the relevant branching fractions, where J = j or b. We point out the missing, complementary searches in the mixed decay modes, t t ¯ j j , t t ¯ b b ¯ , and b b ¯ j j . We propose analysis strategies for the t t ¯ j j and t t ¯ b b ¯ decays and find their sensivity surpasses that of existing searches when the decay widths to tops and light jets are comparable. If no other decays are present, collective lower limits on the resonance mass can be set at 1.5 TeV using 37 fb−1 of 13 TeV data
Fluorescence enhancement of curcumin upon inclusion into cucurbituril
No full textThe effect of the macrocyclic host compounds cucurbit[n]urils (Qn), with n = 5 - 7, on the fluorescence of the biologically active compound curcumin has been studied. Curcumin, the main constituent of the Indian spice turmeric, is of growing interest because of its wide-ranging pharmaceutical properties. This compound forms strong 2:1 host-guest inclusion complexes with Q6 (the original cucurbituril), with an overall equilibrium constant of (1.9 +/- 0.8) X 10(4) M-2. It is postulated that a Q6 host partially encapsulates each of the two phenyl groups at the ends of the curcumin molecule. The difference in magnitude of the equilibrium constants K-1 (72 +/- 2 M-1) and K-1 (260 +/- 120 M-1) for stepwise encapsulation of the two ends of the curcumin molecule indicates that encapsulation by the first Q6 significantly alters its entire electronic structure, resulting in a more favorable second encapsulation. A very large enhancement of the fluorescence of curcumin results from this complex formation, on the order of 5.0; this is a significant fraction of the polarity sensitivity factor (PSF) of 39 measured for curcumin, that is the ratio of fluorescence intensity in ethanol vs. water. Surprisingly, no such enhancement could be observed in the case of Q7, indicating that the interactions between the guest and the host cavity are not favorable in this case, contrary to expectations. Similarly, no enhancement was observed in the case of Q5, which is not unexpected, because of the extremely small size of the host cavity and portal in this case.PT: J; CR: BARIK A, 2003, PHOTOCHEM PHOTOBIOL, V77, P597 BONG PH, 2000, B KOR CHEM SOC, V21, P81 BUSCHMANN HJ, 1997, J INCLUS PHENOM MOL, V29, P167 BUSCHMANN HJ, 1998, J SOLUTION CHEM, V27, P135 BUSCHMANN HJ, 1998, THERMOCHIM ACTA, V317, P95 BUSCHMANN HJ, 2000, J INCL PHENOM MACRO, V37, P231 BUSCHMANN HJ, 2000, SUPRAMOL CHEM, V11, P225 CHIGNELL CF, 1994, PHOTOCHEM PHOTOBIOL, V59, P295 CHOI S, 2002, MACROMOLECULES, V35, P3526 CINTAS P, 1994, J INCLUS PHENOM MOL, V17, P205 DAHL TA, 1994, PHOTOCHEM PHOTOBIOL, V59, P290 DALTON L, 2003, CHEM ENG NEWS SEP, P8 DAY A, 2001, J ORG CHEM, V66, P8094 DELAPENA AM, 1993, J INCLUS PHENOM MOL, V15, P131 ELHAOUAJ M, 2001, J CHEM SOC PERK NOV, P2104 ELHAOUAJ M, 2001, J CHEM SOC PERK T 2, P804 FREEMAN WA, 1981, J AM CHEM SOC, V103, P7367 FREEMAN WA, 1984, ACTA CRYSTALLOGR B, V40, P382 HAMAI S, 1996, B CHEM SOC JPN, V69, P2469 HOFFMANN R, 1994, J CHEM SOC FARADAY T, V90, P1507 JANSEN K, 2000, VOM WASSER, V95, P229 JEON YM, 1996, J AM CHEM SOC, V118, P9790 JOVANOVIC SV, 2001, J AM CHEM SOC, V123, P3064 KHOPDE SM, 2000, PHOTOCHEM PHOTOBIOL, V72, P625 KIM J, 2000, J AM CHEM SOC, V122, P540 LAGONA J, 2003, ORG LETT, V5, P3745 LEE JW, 2003, ACCOUNTS CHEM RES, V36, P621 LIU Y, 2000, J ORG CHEM, V65, P6227 MARQUEZ C, 2001, ANGEW CHEM INT EDIT, V40, P3155 MARQUEZ C, 2001, ANGEW CHEM INT EDIT, V40, P4387 MESCHKE C, 1997, THERMOCHIM ACTA, V297, P43 MOCK WL, 1983, J ORG CHEM, V48, P3618 MOCK WL, 1986, J ORG CHEM, V51, P4440 MOCK WL, 1989, J AM CHEM SOC, V111, P2697 MOCK WL, 1990, J CHEM SOC CHEM COMM, P1509 MOCK WL, 1995, TOP CURR CHEM, V175, P1 MOCK WL, 1996, COMPREHENSIVE SUPRAM, V2, P477 NEUGEBAUER R, 1998, J CHEM SOC PERK MAR, P529 NIGAM S, 1996, J PHYS CHEM-US, V100, P7135 ROBINSON TP, 2003, BIOORG MED CHEM LETT, V13, P115 SHIM JS, 2003, CHEM BIOL, V10, P695 SUN YM, 2002, ORG LETT, V4, P2909 SZELTLI J, 1998, CHEM REV, V98, P1743 TANG B, 2002, J AGR FOOD CHEM, V50, P1355 TONNESEN HH, 2002, INT J PHARM, V244, P127 WAGNER BD, 2000, J INCL PHENOM MACRO, V38, P467 WAGNER BD, 2001, CAN J CHEM, V79, P1101 WAGNER BD, 2003, J PHYS CHEM B, V107, P10741 WHANG D, 1996, J AM CHEM SOC, V118, P11333 WHANG D, 1998, ANGEW CHEM INT EDIT, V37, P78 WRIGHT JS, 2002, J MOL STRUC-THEOCHEM, V591, P207; NR: 51; TC: 8; J9: SUPRAMOL CHEM; PG: 7; GA: 876JJSource type: Electronic(1
Fabrieksschema: Zwavelkoolstof fabricage
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
A Mátra-hegység sodrómoly faunája (Lepidoptera: Tortricidae)
No full textn this paper, the author reports 304 Tortricidae species known from Mátra up to the end of 2023, based on his own collections and the data published so far in the domestic literature
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