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Artículos de revistas sobre el tema "Tail bond"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 7 de febrero de 2022

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1

Tang, Qihe, and Zhongyi Yuan. "CAT BOND PRICING UNDER A PRODUCT PROBABILITY MEASURE WITH POT RISK CHARACTERIZATION." ASTIN Bulletin 49, no. 2 (2019): 457–90. http://dx.doi.org/10.1017/asb.2019.11.

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AbstractFrequent large losses from recent catastrophes have caused great concerns among insurers/reinsurers, who then turn to seek mitigations of such catastrophe risks by issuing catastrophe (CAT) bonds and thereby transferring the risks to the bond market. Whereas, the pricing of CAT bonds remains a challenging task, mainly due to the facts that the CAT bond market is incomplete and that the pricing usually requires knowledge about the tail of the risks. In this paper, we propose a general pricing framework based on a product pricing measure, which combines a distorted probability measure th

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2

Komorník, Jozef, Magdaléna Komorníková, Tomáš Bacigál, and Cuong Nguyen. "Multidimensional Copula Models for Parallel Development of the Us Bond Market Indices." Tatra Mountains Mathematical Publications 69, no. 1 (2017): 61–73. http://dx.doi.org/10.1515/tmmp-2017-0014.

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Abstract Stock and bond markets co-movements have been studied by many researchers. The object of our investigation is the development of three U.S. investment grade corporate bond indices. We concluded that the optimal 3D as well as partial pairwise 2D models are in the Student class with 2 degrees of freedom (and thus very heavy tails) and exhibit very high values of tail dependence coefficients. Hence the considered bond indices do not represent suitable components of a well-diversified investment portfolio. On the other hand, they could make good candidates for underlying assets of derivat

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3

SYOJI, Katsuo, Libo ZHOU, and Jun'ichi TAMAKI. "The mechanism of bond-tail formation in diamond wheels." Journal of the Japan Society for Precision Engineering 56, no. 7 (1990): 1247–52. http://dx.doi.org/10.2493/jjspe.56.1247.

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4

Eberlin, Adrien, Cédric Grauffel, Mustapha Oulad-Abdelghani, et al. "Histone H3 Tails Containing Dimethylated Lysine and Adjacent Phosphorylated Serine Modifications Adopt a Specific Conformation during Mitosis and Meiosis." Molecular and Cellular Biology 28, no. 5 (2008): 1739–54. http://dx.doi.org/10.1128/mcb.01180-07.

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ABSTRACT Condensation of chromatin, mediated in part by posttranslational modifications of histones, is essential for cell division during mitosis. Histone H3 tails are dimethylated on lysine (Kme2) and become phosphorylated on serine (Sp) residues during mitosis. We have explored the possibility that these double modifications are involved in the establishment of H3 tail conformations during the cell cycle. Here we describe a specific chromatin conformation occurring at Kme2 and adjacently phosphorylated S of H3 tails upon formation of a hydrogen bond. This conformation appears exclusively be

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5

Chao, Wen, and Huiwen Zou. "Multiple-Event Catastrophe Bond Pricing Based on CIR-Copula-POT Model." Discrete Dynamics in Nature and Society 2018 (June 25, 2018): 1–9. http://dx.doi.org/10.1155/2018/5068480.

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Catastrophe events are attracting increased attention because of their devastating consequences. Aimed at the nonlinear dependency and tail characteristics of different triggered indexes of multiple-event catastrophe bonds, this paper applies Copula function and the extreme value theory to multiple-event catastrophe bond pricing. At the same time, floating coupon and principal payoff structures are adopted instead of fixed coupon and principal payoff structures, to reduce moral hazard and improve bond attractiveness. Furthermore, we develop a CIR-Copula-POT bond pricing model with CIR stochast

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6

Mathur, Pradeep, Moawia O. Ahmed, Aswini K. Dash, and Mrinalini G. Walawalkar. "Tail-to-tail carbon–carbon bond coupling of acetylides on chalcogen-bridged Fe/W mixed-metal clusters." Journal of the Chemical Society, Dalton Transactions, no. 11 (1999): 1795–98. http://dx.doi.org/10.1039/a900828d.

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7

Wu, Ying Han, Min Lang Lin, and Chich Tsung Lin. "Experimental Bond Performance of CFRP Anchors." Advanced Materials Research 739 (August 2013): 303–8. http://dx.doi.org/10.4028/www.scientific.net/amr.739.303.

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In this paper, the technique: CFRP wrapping combined with CFRP anchors for RC structural member retrofit and its design criteria are introduced for a start. Experimental investigations [1,2, had been adopted and developed the use of CFRP anchors to provide confinement and improve square jacketing behaviors as well as prevent premature debonding for CFRP wraps. To fully determine the anchorage performance of CFRP anchor, a total of forty five specimens for the fiber bolt and the spread tail, two important components in CFRP anchor, were constructed and tested. The experimental results of failur

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8

Culp, Christopher L., Yoshio Nozawa, and Pietro Veronesi. "Option-Based Credit Spreads." American Economic Review 108, no. 2 (2018): 454–88. http://dx.doi.org/10.1257/aer.20151606.

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We present a novel empirical benchmark for analyzing credit risk using “pseudo firms” that purchase traded assets financed with equity and zero-coupon bonds. By no-arbitrage, pseudo bonds are equivalent to Treasuries minus put options on pseudo firm assets. Empirically, like corporate spreads, pseudo bond spreads are large, countercyclical, and predict lower economic growth. Using this framework, we find that bond market illiquidity, investors' overestimation of default risks, and corporate frictions do not seem to explain excessive observed credit spreads but, instead, a risk premium for tail

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9

Kapustin, Eugene, Vasily Minkov, and Elena Boldyreva. "The Only N-H...O Hydrogen Bond - Two Ways to Build a Structure of Dimethylglycine." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C550. http://dx.doi.org/10.1107/s2053273314094492.

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Crystalline amino acids are considered to mimic important interactions in peptides, therefore the studies of the structure-forming factors in these systems attract much attention. N,N-dimethylglycine is an interesting model compound that was used to test the role of the N-H...O H-bonds in forming the head-to-tail chains – the main structural unit in the crystals of amino acids. It was hypothesized previously that additional side N-H...O H-bonds play an important role in forming the head-to-tail chains of amino acid zwitterions linked via N-H...O H-bonds between the charged -NH3 and -COO termin

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10

Kutateladze, Dennis A., Daniel A. Strassfeld, and Eric N. Jacobsen. "Enantioselective Tail-to-Head Cyclizations Catalyzed by Dual-Hydrogen-Bond Donors." Journal of the American Chemical Society 142, no. 15 (2020): 6951–56. http://dx.doi.org/10.1021/jacs.0c02665.

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11

Wagner, Niklas. "Autoregressive conditional tail behavior and results on Government bond yield spreads." International Review of Financial Analysis 14, no. 2 (2005): 247–61. http://dx.doi.org/10.1016/j.irfa.2004.06.013.

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12

Metcalf, Douglas G., Joseph M. Kielec, Kathleen G. Valentine, A. Joshua Wand, William F. DeGrado та Joel S. Bennett. "NMR Structure of a Disulfide-Crosslinked αIIbβ3 Cytoplasmic Domain Heterodimer". Blood 112, № 11 (2008): 2866. http://dx.doi.org/10.1182/blood.v112.11.2866.2866.

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Abstract The platelet integrin αIIbβ3 is the prototypic example of regulated integrin function. Thus, αIIbβ3 is present in a resting conformation on unstimulated platelets, but switches to an active conformation following platelet stimulation. Recent experiments suggest that disrupting a heteromeric interaction between the αIIb and β3 transmembrane (TM) and cytoplasmic domains shifts αIIbβ3 from its resting to its active conformation. However, structural information about the heteromeric interaction is sparse. Thus far, the structure of the TM heterodimer has only been studied by molecular mod

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13

Murali, S., N. Srikanth, and Charles J. Vath. "An Evaluation of Gold and Copper Wire Bonds on Shear and Pull Testing." Journal of Electronic Packaging 128, no. 3 (2005): 192–201. http://dx.doi.org/10.1115/1.2229214.

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In microelectronic packaging technology wire bonding is a common interconnect technique. The quality and reliability of wire bonds are generally evaluated by ball shear and stitch pull testing. From the load versus time and load versus tool tip displacement plots of the shear test, three regions can be observed. Region I primarily exhibits elastic-plastic deformation occur, while crack nucleate in region II which propagates in region III which finally ends in a catastrophic failure. Fractographs reveal in the case of gold ball bonds shows fracture occurs in Al bond pad metallization close to A

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14

LIM, P. K., and W. K. TAM. "LOCAL VIBRATIONAL MODES AND THE OPTICAL ABSORPTION TAIL OF AMORPHOUS SILICON." International Journal of Modern Physics B 20, no. 25n27 (2006): 4261–66. http://dx.doi.org/10.1142/s0217979206041197.

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Local vibrational modes of Si - H is an important research area in recent years. Local vibrational modes of chemical bonds between Si atom and other impurity atoms such as H and O in amorphous silicon films produced by radio frequency sputtering were studied by means of Fourier transform infrared spectroscopy. The concentrations of Si - H , Si - O and Si - C in the sample were calculated. It was found that the concentration of Si - H bond varied significantly when the material was annealed at temperatures Ta >600 K and tended to zero for Ta >1000 K . The optical absorption edge was also

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15

Hempel, Andrew, Norman Camerman, Donald Mastropaolo, and Arthur Camerman. "Calmodulin antagonists: Structure of N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide hydrochloride (W-7) and comparison with trifluoperazine (TFP) Calmodulin binding." Canadian Journal of Chemistry 83, no. 8 (2005): 1141–45. http://dx.doi.org/10.1139/v05-133.

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The crystal structure of the title compound contains one N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide hydrochloride molecule in the asymmetric unit. The molecule adopts an extended conformation with a linear hexyl group. Protonation occurs at the side chain terminal nitrogen atom. Hydrophobic packing and a three-dimensional hydrogen-bond network, involving all the hydrogen atoms capable of making hydrogen-bond contacts, stabilizes the crystal structure. Due to head-to-head and tail-to-tail arrangement of these hydrophobic molecules, an unusually long cell constant (b = 61.27 Å) character

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16

Chaudhary, Gaurav, Pawan Kumar Chandra, Rakesh Sharma, P. Narayana Prasad, and Sonia Gera. "Shear Bond Strength of Ceramic Brackets with Different Base Designs: An in-vitro Study." Orthodontic Journal of Nepal 5, no. 2 (2015): 20–24. http://dx.doi.org/10.3126/ojn.v5i2.15220.

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Objective: To evaluate the influence of bracket base designs on shear bond strength of ceramic brackets bonded to natural teeth and to determine the common site of bond failure.Materials & Method: 120 therapeutically extracted maxillary first premolars were divided into six groups of 20 samples each and were mounted in resin blocks. Each sample was bonded with bracket of that particular group and subjected to thermocycling. The shear bond strength was measured using Universal Testing Machine. After debonding, the teeth and brackets were examined under stereo-microscope for adhesive remnant

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17

Harcourt, Richard D. "Valence-bond studies of the head-to-tail dimer of chlorine dioxide." Journal of Physical Chemistry 97, no. 7 (1993): 1351–55. http://dx.doi.org/10.1021/j100109a017.

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18

Masuda-Jindo, K., V. K. Tewary, and Robb Thomson. "Theory of chemically induced kink formation on cracks in silica. II. Force law calculations." Journal of Materials Research 2, no. 5 (1987): 631–37. http://dx.doi.org/10.1557/jmr.1987.0631.

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This article is this second of a pair on a theory of chemically assisted fracture. In it a simple bond orbital model of the force laws to be used in fracture is developed. In the bond orbital model, only a few of the atoms in the vicinity of the bond to be broken are considered and do not include interactions with the rest of the system, which is assumed to be Newtonian. Numerical accuracy is not required, but qualitative features of the force laws are believed to be valid. The silica bond is shown to rise quickly to a high peak, after which it develops a relatively long tail. When the bond is

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19

Dajcman, Silvo. "Asymmetric correlation of sovereign bond yield dynamics in the Eurozone." Panoeconomicus 60, no. 6 (2013): 775–89. http://dx.doi.org/10.2298/pan1306775d.

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This paper examines the symmetry of correlation of sovereign bond yield dynamics between eight Eurozone countries (Austria, Belgium, France, Germany, Ireland, Italy, Portugal, and Spain) in the period from January 3, 2000 to August 31, 2011. Asymmetry of correlation is investigated pair-wise by applying the test of Yongmiao Hong, Jun Tu, and Guofu Zhou (2007). Whereas the test of Hong, Tu, and Zhou (2007) is static, the present paper provides also a dynamic version of the test and identifies time periods when the correlation of Eurozone sovereign bond yield dynamics became asymmetric. We ident

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20

Xie, Jin, Yong Tang, and Junichi Tamaki. "A Study on Surface Generation of Metal-Bonded Diamond Grinding Wheel Dressed by Electro-Contact Discharge." Key Engineering Materials 304-305 (February 2006): 76–80. http://dx.doi.org/10.4028/www.scientific.net/kem.304-305.76.

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This paper conducted Electro-Contact Discharge (ECD) dressing experiment for #600 diamond grinding wheel to understand how fine diamond grits protrude from metal-bonded wheel surface. The SEM observation, EDS analysis, image processing and 3D grit modeling on wheel surface were carried out to investigate grit protrusion characteristics. Then ECD dressing and mechanical dressing experiments were carried out to identify the effect of grit protrusion feature on grinding performance. It is confirmed that the dressed wheel surface topography is sensitive to open circuit voltage Ei, discharge polari

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21

Rezvani, A., M. Mayer, I. Qin, J. Brunner, and Bob Chylak. "Stitch Bond Process of Pd-Coated Cu Wire: Experimental and Numerical Studies of Process Parameters and Materials." International Symposium on Microelectronics 2013, no. 1 (2013): 000312–17. http://dx.doi.org/10.4071/isom-2013-tp42.

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Cost reduction is the main driver in the recent transition to Cu wire bonding from predominate Au wire bonding. Other cost reduction in packaging comes from new developments in substrates and lead frames, for example, Pre-Plated Frames (PPF) and uPPF for QFP and QFN reduce the plating and material cost. However, 2nd bonds (stitch bonds) can be more challenging on some of the new leadframe types due to the rough surface finish and thin plating thickness. Pd-coated Cu (PCC) wire has been recently introduced to improve the wire bonding process with bare Cu wire, mainly to improve reliability and

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22

Liu, Berlinda, and Hong Xie. "Hedging High-Yield and Emerging Market Bond Tail Risk with VIX® Futures." Journal of Alternative Investments 22, no. 2 (2019): 81–98. http://dx.doi.org/10.3905/jai.2019.1.080.

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23

Mascarenhas, Romila, Markus Ruetz, Liam McDevitt, Markos Koutmos, and Ruma Banerjee. "Mobile loop dynamics in adenosyltransferase control binding and reactivity of coenzyme B12." Proceedings of the National Academy of Sciences 117, no. 48 (2020): 30412–22. http://dx.doi.org/10.1073/pnas.2007332117.

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Cobalamin is a complex organometallic cofactor that is processed and targeted via a network of chaperones to its dependent enzymes. AdoCbl (5′-deoxyadenosylcobalamin) is synthesized from cob(II)alamin in a reductive adenosylation reaction catalyzed by adenosyltransferase (ATR), which also serves as an escort, delivering AdoCbl to methylmalonyl-CoA mutase (MCM). The mechanism by which ATR signals that its cofactor cargo is ready (AdoCbl) or not [cob(II)alamin] for transfer to MCM, is not known. In this study, we have obtained crystallographic snapshots that reveal ligand-induced ordering of the

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24

Smith, Graham, Urs D. Wermuth, and Jonathan M. White. "2,3-Dimethoxy-10-oxostrychnidinium 2-carboxy-4,5-dichlorobenzoate." Acta Crystallographica Section E Structure Reports Online 63, no. 11 (2007): o4276—o4277. http://dx.doi.org/10.1107/s1600536807047952.

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The structure of the title compound, C23H27N2O4 +·C8H3Cl2O4 −, a 1:1 proton-transfer compound of brucine with 4,5-dichlorophthalic acid, has been determined at 130 K. The brucinium cations and the hydrogen phthalate anions associate through single N—H...Ocarboxylate hydrogen bonds [2.639 (3) Å], giving dimers which are extended via weak head-to-tail C—H...Omethoxy associations into chains forming down the 21 screw axis of the unit cell. The carboxyl proton of the anion gives a short intramolecular O—H...Ocarboxylate hydrogen bond [2.441 (3) Å].

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25

Kalashnikova, Anna A., Mary E. Porter-Goff, Uma M. Muthurajan, Karolin Luger, and Jeffrey C. Hansen. "The role of the nucleosome acidic patch in modulating higher order chromatin structure." Journal of The Royal Society Interface 10, no. 82 (2013): 20121022. http://dx.doi.org/10.1098/rsif.2012.1022.

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Higher order folding of chromatin fibre is mediated by interactions of the histone H4 N-terminal tail domains with neighbouring nucleosomes. Mechanistically, the H4 tails of one nucleosome bind to the acidic patch region on the surface of adjacent nucleosomes, causing fibre compaction. The functionality of the chromatin fibre can be modified by proteins that interact with the nucleosome. The co-structures of five different proteins with the nucleosome (LANA, IL-33, RCC1, Sir3 and HMGN2) recently have been examined by experimental and computational studies. Interestingly, each of these proteins

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26

Cirin, Dejan, Mihalj Posa, Veljko Krstonosic, and Maja Milanovic. "Conductometric study of sodium dodecyl sulfate - nonionic surfactant (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) mixed micelles in aqueous solution." Chemical Industry 66, no. 1 (2012): 21–28. http://dx.doi.org/10.2298/hemind110612059c.

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The present study is concerned with the determination of the critical micelle concentration (cmc) of mixed micelles of sodium dodecyl sulfate with one of five nonionic surfactants (Triton X-100, Tween 20, Tween 60, Tween 80 or Tween 85) from conductance measurements. Based on the calculated values of the ? parameters we have noticed that SDS-nonionic surfactants mostly showed strong synergistic effect. It was found that nonionic surfactants with mainly longer and more hydrophobic tail show stronger interactions with hydrophobic part of SDS, thus expressing stronger synergism. In SDS-Tween 80 b

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27

Metcalf, Douglas G., Joseph M. Kielec, Kathleen G. Valentine, A. Joshua, William F. DeGrado та Joel S. Bennett. "Characterization of a Disulfide-Crosslinked αIIbβ3 Cytoplasmic Domain Heterodimer by NMR." Blood 110, № 11 (2007): 415. http://dx.doi.org/10.1182/blood.v110.11.415.415.

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Abstract The platelet integrin αIIbβ3 is the prototypic example of regulated integrin function. Thus, αIIbβ3 is inactive on unstimulated platelets, but switches to an active conformation following platelet stimulation. Recent experiments suggest that disruption of the heteromeric association of the αIIb and β3 transmembrane (TM) and/or cytoplasmic domains shifts αIIbβ3 from an inactive to an active conformation. However, structural information about these heteromeric associations is sparse. Thus far, the structure of the TM heterodimer has only been studied by molecular modeling. Although inte

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28

KAPOOR, MANISH, and VIJAY A. SINGH. "A PHENOMENOLOGICAL STUDY OF THE Si–H INFRARED SPECTRA IN POROUS AND AMORPHOUS SILICON." Modern Physics Letters B 13, no. 20 (1999): 703–8. http://dx.doi.org/10.1142/s0217984999000889.

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It is observed that Si–H stretching mode vibrational spectra in porous silicon and in hydrogenated amorphous silicon: (i) is broad with a full width at half maxima of ≈20-40 cm -1; (ii) has a long low energy tail; and (iii) has a peak value shifted by 100 cm -1 from 2000 cm -1 (crystalline silicon case) to 2100 cm -1. We propose a simple phenomenological model to account for the above features. The model invokes a narrow distribution in the Si–H bond distances. The first feature namely the broadening can be satisfactorily explained. Although our model yields a low energy tail, it is not as pro

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29

Notman, A. B., H. L. Heath, and J. Hill. "Welfare of the neonate lamb immediately after tail-docking." Proceedings of the British Society of Animal Science 1999 (1999): 108. http://dx.doi.org/10.1017/s1752756200002635.

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Tail docking of new born lambs is a routine practice in the United Kingdom. It has been used as a strategy to reduce the impact of myriasis (blowfly strike). There is only a limited period of time after birth (up to seven days) during which lambs can be docked without the use of anaethesia. Tail docking may have a detrimental effect on the ewe-lamb bond if the process leads to significant and sustained pain. French, Wall and Morgan (1994) suggested lambs suffer acute pain immediately after the procedure of docking but this potential disturbance of normal behaviour during the first few days of

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30

Sarr, Modou, Aminata Diasse-Sarr, Libasse Diop, Laurent Plasseraud, and Hélène Cattey. "Crystal structure of the bis(cyclohexylammonium) succinate succinic acid salt adduct." Acta Crystallographica Section E Crystallographic Communications 71, no. 8 (2015): 899–901. http://dx.doi.org/10.1107/s2056989015012621.

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The crystal structure of the title salt adduct, 2C6H14N+·C4H4O42−·C4H6O4, consists of two cyclohexylammonium cations, one succcinate dianion and one neutral succinic acid molecule. Succinate dianions and succinic acid molecules are self-assembled head-to-tail through O—H...O hydrogen bonds and adopt asyn–synconfiguration, leading to a strand-like arrangement along [101]. The cyclohexylammonium cations have a chair conformation and act as multidentate hydrogen-bond donors linking adjacent strands through intermolecular N—H...O interactions to both the succinate and the succinic acid components.

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31

Eilfeld, Alexander, Jens Hunger, Joachim Sieler, and Barbel Schulze. "Sultam and Sultim Structures, Part 5 [1]. Weak Hydrogen Bonds in Molecular Networks of 2-Hetaryl-3-oxosultams in Comparison with 2-Aryl-3-oxosultams." Zeitschrift für Naturforschung B 64, no. 6 (2009): 669–75. http://dx.doi.org/10.1515/znb-2009-0612.

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Stable 3-oxosultams were synthesized by oxidation of the 2-hetaryl-substituted isothiazolium salts. X-Ray crystal structure analyses of the sultams reveal the existence of strong and weak hydrogen bonds, which lead to different interaction combinations and solid state structures. While the bond lengths and angles in the isothiazol rings of the sultams are similar, the dihedral angles between the isothiazol rings and the hetaryl substituents are influenced by the position of the nitrogen atom in the pyridine ring and its substituents. The sultams form chain structures, dimeric head-to-tail stru

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32

Haress, Nadia G., Hazem A. Ghabbour, Ali A. El-Emam, C. S. Chidan Kumar, and Hoong-Kun Fun. "Crystal structure of 6-chloro-5-isopropylpyrimidine-2,4(1H,3H)-dione." Acta Crystallographica Section E Structure Reports Online 70, no. 11 (2014): o1144—o1145. http://dx.doi.org/10.1107/s1600536814021382.

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In the molecule of the title compound, C7H9ClN2O2, the conformation is determined by intramolecular C—H...O and C—H...Cl hydrogen bonds, which generateS(6) andS(5) ring motifs. The isopropyl group is almost perpendicular to the pyrimidine ring with torsion angles of −70.8 (3) and 56.0 (3)°. In the crystal, two inversion-related molecules are linkedviaa pair of N—H...O hydrogen bonds intoR22(8) dimers; these dimers are connected into chains extending along thebcplaneviaan additional N—H...O hydrogen bond and weaker C—H...O hydrogen bonds. The crystal structure is further stabilized by a weak π–

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33

Chippindale, Ann M., Simon J. Hibble, Alexander H. Pohl, and Edward J. Bilbé. "Dicaesium pentacyanotricuprate(I), Cs2Cu3(CN)5." Acta Crystallographica Section E Structure Reports Online 62, no. 7 (2006): i140—i142. http://dx.doi.org/10.1107/s1600536806020484.

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Cs2Cu3(CN)5 has a layered structure consisting of [Cu3(CN)5]2− sheets stacked in an ABAB fashion along the c axis, with Cs+ cations lying between the sheets. The sheets are generated by linking –(CuCN)– chains, in which the C[triple-bond]N groups are ordered, via [Cu(CN)3]2− units. The two bridging cyanide groups of each [Cu(CN)3]2− unit show partial `head-to-tail' disorder of C and N, whilst the third C[triple-bond]N group is terminal and ordered with C bonded to Cu.

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34

Diana, Rosita, Angela Tuzi, Barbara Panunzi, Antonio Carella, and Ugo Caruso. "Crystal structures of butyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate and 2-methoxyethyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate." Acta Crystallographica Section E Crystallographic Communications 75, no. 6 (2019): 880–87. http://dx.doi.org/10.1107/s205698901900728x.

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The title benzofuran derivatives 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate (BF1), C19H18N2O6, and 2-methoxyethyl 2-amino-5-hydroxy-4-(4-nitrophenyl)benzofuran-3-carboxylate (BF2), C18H16N2O7, recently attracted attention because of their promising antitumoral activity. BF1 crystallizes in the space group P\overline{1}. BF2 in the space group P21/c. The nitrophenyl group is inclined to benzofuran moiety with a dihedral angle between their mean planes of 69.2 (2)° in BF1 and 60.20 (6)° in BF2. A common feature in the molecular structures of BF1 and BF2 is the intramolecular N—H

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35

Smith, Graham, and Urs D. Wermuth. "Crystal structure and hydrogen bonding in the water-stabilized proton-transfer salt brucinium 4-aminophenylarsonate tetrahydrate." Acta Crystallographica Section E Crystallographic Communications 72, no. 5 (2016): 751–55. http://dx.doi.org/10.1107/s2056989016006691.

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In the structure of the brucinium salt of 4-aminophenylarsonic acid (p-arsanilic acid), systematically 2,3-dimethoxy-10-oxostrychnidinium 4-aminophenylarsonate tetrahydrate, (C23H27N2O4)[As(C6H7N)O2(OH)]·4H2O, the brucinium cations form the characteristic undulating and overlapping head-to-tail layered brucine substructures packed along [010]. The arsanilate anions and the water molecules of solvation are accommodated between the layers and are linked to them through a primary cation N—H...O(anion) hydrogen bond, as well as through water O—H...O hydrogen bonds to brucinium and arsanilate ions

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36

LI, XIAO-XI, JI-LONG ZHANG, QING-CHUAN ZHENG, et al. "CATALYTIC MECHANISM OF ALL-TRANS-RETINOIC ACID 4-HYDROXYLATION MEDIATED BY CYTOCHROME P450 2C8: HOW DOES ARGININE 241 AFFECT THE C–H BOND ACTIVATION?" Journal of Theoretical and Computational Chemistry 12, no. 08 (2013): 1341009. http://dx.doi.org/10.1142/s0219633613410095.

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Experiments revealed that cytochrome P450 2C8 enzyme (CYP2C8) has two distinct substrate binding sites to the physiologically important molecules, retinoic acids, and the main difference between these two binding sites is whether there is a salt bridge interaction between the anionic carboxylate tail of retinoic acids and the surrounding protein environment. However, the influence of such salt bridge interaction toward catalysis is still elusive. In the present paper, density functional theory (DFT) calculations were employed to research the reaction mechanism of all-trans-retinoic acid (atRA)

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37

Van Berkom, Leon W. A., Ren� de Gelder, and Hans W. Scheeren. "6-Spiro-1,4-diazepane-2,5-diones by Head-to-Tail N1/C2 Amide Bond Formation." European Journal of Organic Chemistry 2005, no. 5 (2005): 907–17. http://dx.doi.org/10.1002/ejoc.200400782.

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38

Schmidt, Ralf, Matthias Stolte, Matthias Grüne, and Frank Würthner. "Hydrogen-Bond-Directed Formation of Supramolecular Polymers Incorporating Head-to-Tail Oriented Dipolar Merocyanine Dyes." Macromolecules 44, no. 10 (2011): 3766–76. http://dx.doi.org/10.1021/ma2004184.

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39

Price, N. C., D. Duncan, and J. W. McAlister. "Inactivation of rabbit muscle phosphoglycerate mutase by limited proteolysis with thermolysin." Biochemical Journal 229, no. 1 (1985): 167–71. http://dx.doi.org/10.1042/bj2290167.

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Rabbit muscle phosphoglycerate mutase is inactivated by proteolysis with thermolysin. Inactivation is correlated with the breakage of one (or a few) bond(s) near one end of the polypeptide chain. There is no change in the overall conformation, quaternary structure or binding to Cibacron Blue on proteolysis. The possible analogy with the existence of a flexible tail in the yeast enzyme is discussed.

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40

Yamanishi, Kumpei, Yooksil Sin, Shin-ichi Terawaki, Yoshiki Higuchi, and Naoki Shibata. "High-resolution structure of a Y27W mutant of the Dishevelled2 DIX domain." Acta Crystallographica Section F Structural Biology Communications 75, no. 2 (2019): 116–22. http://dx.doi.org/10.1107/s2053230x18018290.

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Dishevelled (Dvl) is a positive regulator of the canonical Wnt pathway that downregulates the phosphorylation of β-catenin and its subsequent degradation. Dvl contains an N-terminal DIX domain, which is involved in its homooligomerization and interactions with regulators of the Wnt pathway. The crystal structure of a Y27W mutant of the Dishevelled2 DIX domain (DIX-Y27W) has been determined at 1.64 Å resolution. DIX-Y27W has a compact ubiquitin-like fold and self-associates with neighbouring molecules through β-bridges, resulting in a head-to-tail helical molecular arrangement similar to previo

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41

Das, Chinmay, and Peter D. Olmsted. "The physics of stratum corneum lipid membranes." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 374, no. 2072 (2016): 20150126. http://dx.doi.org/10.1098/rsta.2015.0126.

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The stratum corneum (SC), the outermost layer of skin, comprises rigid corneocytes (keratin-filled dead cells) in a specialized lipid matrix. The continuous lipid matrix provides the main barrier against uncontrolled water loss and invasion of external pathogens. Unlike all other biological lipid membranes (such as intracellular organelles and plasma membranes), molecules in the SC lipid matrix show small hydrophilic groups and large variability in the length of the alkyl tails and in the numbers and positions of groups that are capable of forming hydrogen bonds. Molecular simulations provide

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42

Dwir, Oren, Geoffrey S. Kansas, and Ronen Alon. "Cytoplasmic anchorage of L-selectin controls leukocyte capture and rolling by increasing the mechanical stability of the selectin tether." Journal of Cell Biology 155, no. 1 (2001): 145–56. http://dx.doi.org/10.1083/jcb.200103042.

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L-selectin is a leukocyte lectin that mediates leukocyte capture and rolling in the vasculature. The cytoplasmic domain of L-selectin has been shown to regulate leukocyte rolling. In this study, the regulatory mechanisms by which this domain controls L-selectin adhesiveness were investigated. We report that an L-selectin mutant generated by truncation of the COOH-terminal 11 residues of L-selectin tail, which impairs association with the cytoskeletal protein α-actinin, could capture leukocytes to glycoprotein L-selectin ligands under physiological shear flow. However, the conversion of initial

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43

Souad, Tobbeche, and Amar Merazga. "Tunneling Recombination Mechanism in n-Type a-Si:H Steady State Regime." Advanced Materials Research 774-776 (September 2013): 816–23. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.816.

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In this paper we developed a recombination model for the steady state photoconductivity (SSP) with the assumption that the correlated dangling bond states (DB) act as the essential recombination centres and the electron recombination proceeds by tunneling from the conduction band tail states (TS) for n-type a-Si:H. The modeled temperature dependence of the SSP presents the main measured features, particularly the small activation energy and the thermal quenching.

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44

Liu, Berlinda, and Hong Xie. "Practical Applications of Hedging High-Yield and Emerging Market Bond Tail Risk With VIX® Futures." Journal of Alternative Investments 22, Supplement (2019): 1.2–6. http://dx.doi.org/10.3905/jai.22.s1.001.

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45

Hifeda, Y. M., and G. W. Rayfield. "Phase transitions in fatty acid monolayers containing a single double bond in the fatty acid tail." Journal of Colloid and Interface Science 104, no. 1 (1985): 209–15. http://dx.doi.org/10.1016/0021-9797(85)90025-6.

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CHAMPNEYS, A. R., J. M. VANDEN-BROECK, and G. J. LORD. "Do true elevation gravity–capillary solitary waves exist? A numerical investigation." Journal of Fluid Mechanics 454 (March 10, 2002): 403–17. http://dx.doi.org/10.1017/s0022112001007200.

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This paper extends the numerical results of Hunter & Vanden-Broeck (1983) and Vanden-Broeck (1991) which were concerned with studies of solitary waves on the surface of fluids of finite depth under the action of gravity and surface tension. The aim of this paper is to answer the question of whether small-amplitude elevation solitary waves exist. Several analytical results have proved that bifurcating from Froude number F = 1, for Bond number τ between 0 and 1/3, there are families of ‘generalized’ solitary waves with periodic tails whose minimum amplitude is an exponentially small function

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47

GUAN, QING-MEI, and ZHONG-ZHI YANG. "STUDY ON COMPLEXES OF TRYPSIN AND ITS INHIBITORS BY MEANS OF ATOM-BOND ELECTRONEGATIVITY EQUALIZATION METHOD FUSED INTO MOLECULAR MECHANICS (ABEEM/MM)." Journal of Theoretical and Computational Chemistry 06, no. 04 (2007): 731–46. http://dx.doi.org/10.1142/s0219633607003520.

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Trypsin is one of the most important enzymes and plays important roles in the regulation of biological processes. The newly developed trypsin–inhibitor interaction potential model based on atom-bond electronegativity equalization method fused into molecular mechanics (ABEEM/MM) was employed to study complexes of trypsin and its inhibitors. Some structural properties, including root-mean-square deviations (RMSD) of bond length, bond angle and key dihedral, and coordinated RMS Shifts of atoms and hydrogen bond, were studied using ABEEM/MM method and compared with OPLS-AA force-field. At the same

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48

Kubicki, M., T. W. Kindopp, M. V. Capparelli, and P. W. Codding. "Hydrogen-bond patterns in 1,4-dihydro-2,3-quinoxalinediones: ligands for the glycine modulatory site on the NMDA receptor." Acta Crystallographica Section B Structural Science 52, no. 3 (1996): 487–99. http://dx.doi.org/10.1107/s0108768195011773.

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The crystal structures of five 1,4-dihydro-2,3-quinoxalinediones, antagonists of the NMDA modulatory glycine binding site on the excitary amino acid (EAA) receptor complex, have been determined: (I) 6,7-dinitro-1,4-dihydro-2,3-quinoxalinedione (DNQX); (II) 5,7-dinitro-1,4-dihydro-2,3-quinoxalinedione (MNQX); (III) 6-nitro-1,4-dihydro-2,3-quinoxalinedione hydrate; (IV) 6,7-dichloro-1,4-dihydro-2,3-quinoxalinedione; (V) 5,7-dichloro-1,4-dihydro-2,3-quinoxalinedione dimethylformamide. The crystal structure of the most active compound (II) contains a unique intramolecular N—H...O(NO2) hydrogen bon

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49

Gao, Guo Fu, Bo Zhao, and Jing Lin Tong. "Research on Elliptic Vibration Dressing of Large-Grit Bronze-Bonded Diamond Grinding Wheel." Key Engineering Materials 455 (December 2010): 658–61. http://dx.doi.org/10.4028/www.scientific.net/kem.455.658.

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The Large-grit bronze-bonded diamond grinding wheel was shaped employing a diamond dresser with elliptic ultrasonic vibration assistance, to solve problems such as high cost, low dressing speed and low accuracy. And the truing and conditioning performance of this new method was discussed for its effectiveness. Experimental results showed that the roundness error of elliptic vibration dressed diamond grinding wheel is less, and the bond tail was cut shorter and the chip capacity became larger than that of mechanical dressed one. The SEM observation showed for the present dressing method the mat

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50

Mori, Atsunori, Sonoka Yamamoto, Yushin Shibuya, Toyoko Suzuki, Kentaro Okano, and Masaki Horie. "One-Shot Deprotonative Metalation/Transmetalation/Polymerization of Halothiophenes Catalyzed by Nickel Complex for Polythiophene Synthesis." Synthesis 53, no. 17 (2021): 3081–84. http://dx.doi.org/10.1055/a-1368-7072.

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AbstractEffect of divalent metals was studied in the cross-coupling polymerization of thiophenes leading to head-to-tail-type poly-3-hexylthiophene. Deprotonation of the C–H bond at the 5-position of 2-halo-3-hexylthiophene by LDA followed by metal exchange was carried out in one pot and following addition of nickel catalyst underwent polymerization. One-shot reaction involving deprotonation/transmetalation/ cross coupling polymerization was also examined with manganese(II) chloride and nickel(II) catalyst.

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