120,348 research outputs found
Osteoinductive bone substitutes
No full textWismeyer, D. [Promotor]Gu, Z. [Promotor]Liu, Y. [Copromotor
Y(4143) is probably a molecular partner of Y(3930)
No full textAfter discussing the various possible interpretations of the Y(4143) signal observed by the CDF collaboration in the J/Sigma phi mode, we tend to conclude that Y(4143) is probably a D(s)(*)D(s)(*) molecular state with J(PC)=0(++) or 2(++) while Y(3930) is its D(*)D(*) molecular partner as predicted in our previous work [X. Liu, Z. G. Luo, Y. R. Liu, and Shi-Lin Zhu, Eur. Phys. J. C 61, 411 (2009)]. Both the hidden-charm and open-charm two-body decays occur through the rescattering of the vector components within the molecular states while the three- and four-body open-charm decay modes are forbidden kinematically. Hence, their widths are narrow naturally. CDF, BABAR and Belle collaborations may have discovered heavy molecular states already. We urge experimentalists to measure their quantum numbers and explore their radiative decay modes in the future.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)50ARTICLE1null8
Difference based Ridge and Liu type Estimators in Semiparametric Regression Models
No full textWe consider a difference based ridge regression estimator and a Liu type estimator of the regression parameters in the partial linear semiparametric regression model, y = Xβ + f + ε. Both estimators are analysed and compared in the sense of mean-squared error. We consider the case of independent errors with equal variance and give conditions under which the proposed estimators are superior to the unbiased difference based estimation technique. We extend the results to account for heteroscedasticity and autocovariance in the error terms. Finally, we illustrate the performance of these estimators with an application to the determinants of electricity consumption in Germany.Difference based estimator; Differencing estimator, Differencing matrix, Liu estimator, Liu type estimator, Multicollinearity, Ridge regression estimator, Semiparametric model
C2-Acetamidomannosylation. Synthesis of 2-N-acetylamino-2-deoxy-alpha-D-mannopyranosides with glucal donors
No full textA one-pot C2-acetamidomannosylation reaction for the synthesis of 2-N-acetylamino-2-deoxy-α-D-mannopyranosides from glucals is described. Glucal donors are activated by the reagent combination of 2,8-dimethyldibenzothiophene-5-oxide (DMDBTO) and trifluoromethanesulfonic anhydride. Upon subsequent addn. of N-(TMS)acetamide and an appropriate glycosyl acceptor, the corresponding C2-acetamidomannopyranosides are formed
Author’s Response to Commentary on: Liu Y, Attinger D, De Brabanter K. Automatic classification of bloodstain patterns caused by gunshot and blunt impact at various distances
No full textThe Commentary by A. Keten makes the case for considering evaporation and coagulation in research and applications of the forensic discipline of bloodstain pattern analysis (BPA). The author also mentions two important facts: first, blood stains are often present in crime scenes, and second, they can provide significant information towards crime scene reconstruction.This is a manuscript of a Letter to the Editor published as Attinger, D., Liu, Y. and De Brabanter, K. (2020), Authors’ Response. J Forensic Sci, 65: 1386-1387. https://doi.org/10.1111/1556-4029.14452. © 2020 American Academy of Forensic Sciences. Posted with permission of CSAFE
Investigating possible decay modes of Y(4260) under D-1(2420)(D)over-bar + c.c. molecular state ansatz
No full textBy assuming that Y(4260) is a D-1(D) over bar molecular state, we investigate some hidden-charm and charmed pair decay channels of Y(4260) via intermediate D-1(D) over bar meson loops with an effective Lagrangian approach. Through investigating the alpha dependence of branching ratios and ratios between different decay channels, we show that the intermediate D-1(D) over bar meson loops are crucial for driving these transitions of Y(4260) studied here. The coupled channel effects turn out to be more important in Y(4260) -> D*(D) over bar*, which can be tested in future experiments.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)4ARTICLE9null8
Insights into the antibacterial mechanism of PEGylated nano-bacitracin A against Streptococcus pneumonia: both penicillin-sensitive and penicillin-resistant strains [Corrigendum]
No full textInsights into the antibacterial mechanism of PEG ylated nano-bacitracin A against Streptococcus pneumonia: both penicillin-sensitive and penicillinresistant strains [Corrigendum]Hong W, Liu L, Zhang Z, Zhao Y, Zhang D, Liu M. Int J Nanomedicine. 2018;13:6297–6309.The author wishes to advise that on page 6306, Figure 7 parts A and B are incorrect. The correct figure parts are included below:Read the original articl
Osteoinductive and Antibacterial Biomaterials for Bone Tissue Engineering
No full textWismeyer, D. [Promotor]Liu, Y. [Copromotor
Reactive intermediates in the photolysis and thermolysis of 3-chloro-3-benzyldiazirine
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