ORCID Profile
0000-0003-0026-499X
Current Organisation
Universiti Kebangsaan Malaysia
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Publisher: Springer Science and Business Media LLC
Date: 13-03-2012
Publisher: Elsevier BV
Date: 04-2005
Publisher: Elsevier BV
Date: 07-2012
Publisher: Wiley
Date: 15-05-2007
Publisher: IOP Publishing
Date: 07-07-2023
Abstract: We present an analysis of the effect of a dark photon on the rare kaon decay K L → π 0 ν ν ¯ . All relevant couplings of the dark photon to the standard model particles are derived explicitly in terms of the dark photon mass and the mixing parameter. We find that the dark photon yields no more than a few percent correction to the standard model branching ratio Br ( K L → π 0 ν ν ¯ ) in the region of interest.
Publisher: Elsevier BV
Date: 02-1998
Publisher: American Physical Society (APS)
Date: 04-2015
Publisher: American Physical Society (APS)
Date: 28-03-2017
Publisher: American Institute of Physics
Date: 2011
DOI: 10.1063/1.3667315
Publisher: American Physical Society (APS)
Date: 27-04-1999
Publisher: Elsevier BV
Date: 11-2016
Publisher: American Physical Society (APS)
Date: 12-08-2014
Publisher: Wiley
Date: 08-10-2015
Publisher: AIP
Date: 2013
DOI: 10.1063/1.4829383
Publisher: American Physical Society (APS)
Date: 11-04-2013
Publisher: American Physical Society (APS)
Date: 30-03-2011
Publisher: American Physical Society (APS)
Date: 15-07-2011
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 02-2005
Publisher: Elsevier BV
Date: 04-2005
Publisher: American Physical Society (APS)
Date: 24-01-2017
Publisher: Elsevier BV
Date: 04-2005
Publisher: American Physical Society (APS)
Date: 03-1986
Publisher: Elsevier BV
Date: 06-2004
Publisher: Elsevier BV
Date: 02-2004
Publisher: American Physical Society (APS)
Date: 24-08-2011
Publisher: Elsevier BV
Date: 05-2003
Publisher: American Physical Society (APS)
Date: 05-03-2021
Publisher: Elsevier BV
Date: 06-2003
Publisher: World Scientific Pub Co Pte Lt
Date: 30-01-1991
DOI: 10.1142/S0217732391000233
Abstract: Recently deep inelastic scattering experiments have implied that the ‘sea’ of the nucleon breaks flavor SU(2) symmetry. We examine the possible origins of this symmetry breaking in the Fermi statistics of the quarks and antiquarks in the sea and the requirements of chiral symmetry. We show that the present data have a natural explanation in terms of the long-range pion structure of the nucleon. Further work may lead to useful bounds on the parameters of bag models of the nucleon.
Publisher: American Physical Society (APS)
Date: 09-04-2007
Publisher: American Physical Society (APS)
Date: 27-10-2005
Publisher: Elsevier BV
Date: 2001
Publisher: American Physical Society (APS)
Date: 28-05-2001
Publisher: American Physical Society (APS)
Date: 23-12-2014
Publisher: American Physical Society (APS)
Date: 18-04-2007
Publisher: Elsevier BV
Date: 06-2021
Publisher: Elsevier BV
Date: 07-2016
Publisher: Elsevier BV
Date: 09-2001
Publisher: Springer Science and Business Media LLC
Date: 13-12-2006
Publisher: American Physical Society (APS)
Date: 12-05-2022
Publisher: Springer Science and Business Media LLC
Date: 02-2004
Publisher: SAGE Publications
Date: 07-01-2014
Abstract: Renal involvement is the most common serious complication in patients with systemic lupus erythematosus (SLE). The objective of this article is to investigate and determine the associated factors of disease damage among lupus nephritis (LN) patients. Medical records of LN patients who attended regular follow-up for at least one year in the Nephrology/SLE Clinic, Universiti Kebangsaan Malaysia Medical Centre (UKMMC), were reviewed. Their Systemic Lupus International Collaborating Clinics/American College of Rheumatology (SLICC/ACR) Damage Index scores were noted. Univariate analysis and multivariable regression analysis were performed to determine the independent factors of disease damage in LN. A total of 150 patients were included and their follow-up duration ranged from one to 20 years. Sixty (40%) LN patients had disease damage (SDI ≥1). In the univariate analysis, it was associated with age, longer disease duration, antiphospholipid syndrome (APS), higher maximum daily oral prednisolone dose (mg/day), lower mean C3 and C4, higher chronicity index and global sclerosis on renal biopsies ( p 0.05). Patients who received early (≤3 months after the SLE diagnosis) hydroxychloroquine (HCQ), optimum HCQ dose at 6.5 mg/kg/day and achieved early complete remission (CR) were less likely to have disease damage ( p 0.05). After adjustment for age, gender, disease duration and severity, multivariable regression analysis revealed that a higher maximum daily dose of oral prednisolone was independently associated with disease damage while early HCQ and CR were associated with lower disease damage. Higher maximum daily prednisolone dose predicted disease damage whereas treatment with early HCQ and early CR had a protective role against disease damage.
Publisher: American Physical Society (APS)
Date: 27-10-2005
Publisher: American Physical Society (APS)
Date: 20-09-2007
Publisher: Elsevier BV
Date: 07-1998
Publisher: Sissa Medialab
Date: 20-06-2016
DOI: 10.22323/1.253.0037
Publisher: Springer Science and Business Media LLC
Date: 02-2005
Publisher: EDP Sciences
Date: 2017
Publisher: American Physical Society (APS)
Date: 07-2022
Publisher: Sissa Medialab
Date: 04-05-2017
DOI: 10.22323/1.281.0291
Publisher: WORLD SCIENTIFIC
Date: 2007
Publisher: American Physical Society (APS)
Date: 03-06-2005
Publisher: American Physical Society (APS)
Date: 28-06-2013
Publisher: American Physical Society (APS)
Date: 21-05-2001
Publisher: Elsevier BV
Date: 09-2010
Publisher: American Physical Society (APS)
Date: 03-01-2005
Publisher: Elsevier BV
Date: 09-1994
Publisher: Sissa Medialab
Date: 14-12-2005
DOI: 10.22323/1.020.0049
Publisher: American Physical Society (APS)
Date: 08-10-2001
Publisher: Elsevier BV
Date: 03-2006
Publisher: American Physical Society (APS)
Date: 08-10-2001
Publisher: Sissa Medialab
Date: 14-12-2005
DOI: 10.22323/1.020.0048
Publisher: American Physical Society (APS)
Date: 02-03-1998
Publisher: Springer Science and Business Media LLC
Date: 02-08-2018
Publisher: Sissa Medialab
Date: 04-05-2017
DOI: 10.22323/1.281.0288
Publisher: Elsevier BV
Date: 12-1989
Publisher: Elsevier BV
Date: 08-1986
Publisher: Journal of the Physical Society of Japan
Date: 19-03-2014
Publisher: American Physical Society (APS)
Date: 10-1990
Publisher: Elsevier BV
Date: 07-1995
Publisher: American Physical Society (APS)
Date: 03-03-2015
Publisher: Elsevier BV
Date: 02-2004
Publisher: American Physical Society (APS)
Date: 22-02-2000
Publisher: American Physical Society (APS)
Date: 15-05-2013
Publisher: American Physical Society (APS)
Date: 23-01-2015
Publisher: Elsevier BV
Date: 06-2000
Publisher: Elsevier BV
Date: 05-2002
Publisher: Springer Science and Business Media LLC
Date: 08-2001
Publisher: American Physical Society (APS)
Date: 26-02-2016
Publisher: CSIRO Publishing
Date: 1991
DOI: 10.1071/PH910363
Abstract: There has recently been significant progress in the calculation of the twist-two piece of the quark arton distributions corresponding to models like the MIT bag. However, in evaluating the required matrix elements of the quark field operators Signal and Thomas (1988, 1989) resorted to the Peierls-Yoccoz (1957) approximation-albeit with some cautionary remarks. We point out a problem with that approach which is solved by using the Peierls-Thouless (1962) approximation for the hadronic states. The very simple case of a nonrelativistic constant density quark wavefunction is solved in detail.
Publisher: American Physical Society (APS)
Date: 30-01-2015
Publisher: Elsevier BV
Date: 04-2002
Publisher: American Physical Society (APS)
Date: 18-07-2013
Publisher: American Physical Society (APS)
Date: 11-1987
Publisher: Sissa Medialab
Date: 20-12-2012
DOI: 10.22323/1.164.0165
Publisher: Elsevier BV
Date: 02-2007
Publisher: Journal of the Physical Society of Japan
Date: 07-11-2019
Publisher: American Physical Society (APS)
Date: 02-06-2020
Publisher: Elsevier BV
Date: 09-1997
Publisher: Springer Science and Business Media LLC
Date: 11-2003
Publisher: American Physical Society (APS)
Date: 16-08-2011
Publisher: Sissa Medialab
Date: 04-05-2017
DOI: 10.22323/1.281.0269
Publisher: SPIE
Date: 28-12-2005
DOI: 10.1117/12.640756
Publisher: Sissa Medialab
Date: 14-12-2005
DOI: 10.22323/1.020.0067
Publisher: American Physical Society (APS)
Date: 13-11-2014
Publisher: American Physical Society (APS)
Date: 29-05-2018
Publisher: American Physical Society (APS)
Date: 06-1997
Publisher: Elsevier BV
Date: 11-2005
Publisher: Elsevier BV
Date: 05-2016
Publisher: Elsevier BV
Date: 05-2002
Publisher: American Physical Society (APS)
Date: 09-08-2012
Publisher: Elsevier BV
Date: 11-1993
Publisher: Elsevier BV
Date: 2003
Publisher: American Physical Society (APS)
Date: 05-1992
Publisher: American Physical Society (APS)
Date: 05-2009
Publisher: Sissa Medialab
Date: 20-12-2012
DOI: 10.22323/1.164.0267
Publisher: American Physical Society (APS)
Date: 24-05-2021
Publisher: Sissa Medialab
Date: 20-12-2012
DOI: 10.22323/1.164.0145
Publisher: Elsevier BV
Date: 11-2004
Publisher: American Physical Society (APS)
Date: 11-06-2015
Publisher: American Physical Society (APS)
Date: 26-05-2009
Publisher: American Physical Society (APS)
Date: 22-09-2022
Publisher: Elsevier BV
Date: 11-2010
Publisher: WORLD SCIENTIFIC
Date: 02-2006
Publisher: American Physical Society (APS)
Date: 08-09-2006
Publisher: American Physical Society (APS)
Date: 10-07-2006
Publisher: Springer Science and Business Media LLC
Date: 11-2003
Publisher: American Physical Society (APS)
Date: 31-12-2020
Publisher: Elsevier BV
Date: 1997
Publisher: American Physical Society (APS)
Date: 07-05-2002
Publisher: WORLD SCIENTIFIC
Date: 08-2020
Publisher: American Physical Society (APS)
Date: 28-12-2020
Publisher: American Physical Society (APS)
Date: 19-06-2017
Publisher: American Physical Society (APS)
Date: 31-05-2013
Publisher: Elsevier BV
Date: 09-2001
Publisher: SAGE Publications
Date: 15-08-2011
Abstract: Introduction: Patients with systemic lupus erythematosus, particularly with lupus nephritis (LN), are at risk of premature cardiovascular (CV) disease. Objective: To determine the association between immunosuppressive medications, traditional CV risk factors and carotid intima media thickness (CIMT) among patients with LN. Methodology: This was a cross-sectional study in which consecutive LN patients attending the Nephrology/SLE Clinic were evaluated for traditional CV risk factors. Detailed information on their treatment was obtained from their medical records. CIMT, an excellent marker of subclinical atherosclerosis, was measured by B Mode carotid ultrasound. Results: A total of 82 patients with LN with a mean age of 33.9 ± 9.8 years were recruited. More than half had hypertension ( n = 55, 67.1%) and dyslipidemia ( n = 43, 52.4%) as traditional CV risks. Longer history and higher cumulative dose of corticosteroids were associated with hypertension, but use of intravenous methylprednisolone was associated with lower systolic and diastolic blood pressure and lower serum total cholesterol and triglyceride levels ( p 0.05 each). Hydroxychloroquine use was associated with lower total serum cholesterol and serum low-density lipoprotein levels ( p 0.05). Although the use of cyclosporine A (CyA) was associated with hypertension ( p 0.05), those who received a lower cumulative dose of CyA had thicker CIMT ( r s = -0.33, p =0.01) and CyA use remained an independent predictor of CIMT during linear regression analysis. There were no associations between CIMT and cumulative dose and duration of steroids, hydroxychloroquine, azathioprine, mycophenolic acid and cyclophosphamide. Conclusion: Aggressive treatment of severe LN and the use of CyA as a steroid-sparing agent may have protective effects against premature atherosclerosis.
Publisher: AIP
Date: 2011
DOI: 10.1063/1.3587608
Publisher: American Physical Society (APS)
Date: 21-11-2019
Publisher: American Physical Society (APS)
Date: 20-05-2013
Publisher: World Scientific Pub Co Pte Lt
Date: 28-02-2003
DOI: 10.1142/S0217732303010478
Abstract: There is considerable interest in the possibility of extracting model independent information on the masses and other properties of hadrons from lattice QCD, even though the state of the art involves light quark masses considerably higher than those found in nature. We review the applicability of effective field theory to this problem. Taking the rho meson as an ex le, we show that conventional, dimensionally regularized field theory is not sufficiently convergent to provide a reliable method of extrapolation. The reason for the poor convergence is discussed, along with the solution which this suggests. Finally we outline a very interesting suggestion of a connection between hadron masses in full and quenched QCD, using the nucleon and delta as ex les.
Publisher: Elsevier BV
Date: 12-2010
DOI: 10.1016/J.TRANSCI.2010.10.003
Abstract: This was a prospective randomized controlled trial to evaluate the effects of immunoadsorption (IA) versus conventional PP (PP) as adjunctive therapy in the treatment of severe lupus nephritis (LN). Of 28 patients with biopsy-proven severe LN (ISN/RPS classes III or IV ± V), 14 underwent 36 sessions of PP and the other 41 sessions of IA in addition to our center's standard LN treatment protocol. Three patients in the PP group and 2 in the IA group experienced a transient, marked drop in platelets with the second session. Except for a higher pre treatment mean SLEDAI score in the PP group 17.4 ± 2.0 vs. 13.5 ± 4.8 p = 0.009 and a serum creatinine of 163 ± 7.9 vs. 81.7 ± 10.2 p = 0.33, there were no other baseline differences. Some differences did exist between the two therapies in the immediate post-treatment phase, at 1 and 3 months. Three in IA relapsed, none of PP in third months, whereas two patients relapsed in the PP and none of IA cohorts at 6 months. However, most of these parameters did not differ by 6 months. The pre- and post-therapy SLEDAI scores remained different 12.4 ± 4.5 vs. 9 ± 4 p = 0.04 at 1 month, and at 3 month 13.5 ± 4.7 vs. 7.7 ± 1.1 p = 0.012 but not at 6 months. We conclude that IA and PP were equally well tolerated and efficacious as adjunctive therapy for severe LN.
Publisher: Wiley
Date: 04-2008
Publisher: American Physical Society (APS)
Date: 13-04-2017
Publisher: Elsevier BV
Date: 08-2020
Publisher: EDP Sciences
Date: 2013
Publisher: Elsevier BV
Date: 02-2016
Publisher: Elsevier BV
Date: 08-1994
Publisher: Elsevier BV
Date: 06-2014
Publisher: Elsevier BV
Date: 06-2007
Publisher: American Physical Society (APS)
Date: 16-06-2004
Publisher: Oxford University Press (OUP)
Date: 2004
DOI: 10.1143/PTPS.156.124
Publisher: American Physical Society (APS)
Date: 1994
Publisher: Wiley
Date: 08-2011
Publisher: American Physical Society (APS)
Date: 09-2016
Publisher: American Physical Society (APS)
Date: 11-1991
Publisher: EDP Sciences
Date: 2018
DOI: 10.1051/EPJCONF/201817506019
Abstract: The structure of the ground state nucleon and its finite-volume excitations are examined from three different perspectives. Using new techniques to extract the relativistic components of the nucleon wave function, the node structure of both the upper and lower components of the nucleon wave function are illustrated. A non-trivial role for gluonic components is manifest. In the second approach, the parity-expanded variational analysis (PEVA) technique is utilised to isolate states at finite momenta, enabling a novel examination of the electric and magnetic form factors of nucleon excitations. Here the magnetic form factors of low-lying odd-parity nucleons are particularly interesting. Finally, the structure of the nucleon spectrum is examined in a Hamiltonian effective field theory analysis incorporating recent lattice-QCD determinations of low-lying two-particle scattering-state energies in the finite volume. The Roper resonance of Nature is observed to originate from multi-particle coupled-channel interactions while the first radial excitation of the nucleon sits much higher at approximately 1.9 GeV.
Publisher: American Physical Society (APS)
Date: 27-02-2017
Publisher: American Physical Society (APS)
Date: 03-12-2012
Publisher: American Physical Society (APS)
Date: 09-06-2009
Publisher: American Physical Society (APS)
Date: 21-10-2015
Publisher: Elsevier BV
Date: 05-1985
Publisher: American Physical Society (APS)
Date: 02-1994
Publisher: World Scientific Pub Co Pte Lt
Date: 07-2014
DOI: 10.1142/S0218301314610102
Abstract: Recent work unambiguously resolves the level of charge symmetry violation in moments of parton distributions using (2 + 1)-flavor lattice QCD. We introduce the methods used for that analysis by applying them to determine the strong contribution to the proton–neutron mass difference. We also summarize related work which reveals that the fraction of baryon spin which is carried by the quarks is in fact structure-dependent rather than universal across the baryon octet.
Publisher: American Physical Society (APS)
Date: 13-01-2010
Publisher: American Physical Society (APS)
Date: 16-06-1986
Publisher: American Physical Society (APS)
Date: 12-11-2009
Publisher: WORLD SCIENTIFIC
Date: 06-10-2014
Publisher: Journal of the Physical Society of Japan
Date: 23-05-2016
Publisher: Elsevier BV
Date: 04-2000
Publisher: Springer Science and Business Media LLC
Date: 25-03-2010
Publisher: Springer Science and Business Media LLC
Date: 10-2015
Publisher: Elsevier BV
Date: 09-2020
Publisher: American Physical Society (APS)
Date: 26-11-2012
Publisher: Informa UK Limited
Date: 02-07-2020
Publisher: American Physical Society (APS)
Date: 05-11-1999
Publisher: American Physical Society (APS)
Date: 03-06-2014
Publisher: Sissa Medialab
Date: 21-05-2015
DOI: 10.22323/1.214.0094
Publisher: Elsevier BV
Date: 06-1998
Publisher: American Physical Society (APS)
Date: 04-02-2022
Publisher: Elsevier BV
Date: 12-1988
Publisher: CSIRO Publishing
Date: 2008
DOI: 10.1071/HR08010
Abstract: Ian McCarthy was one of Australia's outstanding theoretical physicists. He was born in country South Australia and, after a PhD at the University of Adelaide, and periods of work in the UK and USA, he returned to South Australia where for several decades he led an outstanding research program at Flinders University. Ian's career had two major stages. In the first, he made major contributions to nuclear reaction theory, including very important insights into the physical consequences of the optical model and state-of-the-art calculations of proton knock-out from nuclei. In the second phase, he imported the concept of the knock-out reaction to atomic, molecular and solid state physics. Using the (e,2e) reaction, for which he and his colleagues developed the theoretical framework, his group made major contributions in these areas.
Publisher: American Physical Society (APS)
Date: 02-1987
Publisher: American Physical Society (APS)
Date: 12-08-2022
Publisher: American Physical Society (APS)
Date: 04-06-2001
Publisher: American Physical Society (APS)
Date: 12-06-2002
Publisher: American Physical Society (APS)
Date: 10-09-2021
Publisher: American Physical Society (APS)
Date: 27-11-2002
Publisher: Springer Berlin Heidelberg
Date: 2005
DOI: 10.1007/11356462_5
Publisher: American Physical Society (APS)
Date: 22-11-2004
Publisher: IOP Publishing
Date: 19-11-2019
Publisher: American Physical Society (APS)
Date: 20-08-2019
Publisher: Elsevier BV
Date: 03-2004
Publisher: World Scientific Pub Co Pte Lt
Date: 09-1988
DOI: 10.1142/S0217732388001239
Abstract: It is not possible to obtain both the quark and antiquark momentum distributions from inclusive muon scattering as the electromagnetic structure function is dependent on a linear combination of these. We shall present a method here which extracts these distributions from semi-inclusive muon scattering. Knowledge of the quark fragmentation functions is not required.
Publisher: Elsevier BV
Date: 03-2009
Publisher: AIP
Date: 2011
DOI: 10.1063/1.3587581
Publisher: IOP Publishing
Date: 14-02-2022
Abstract: We investigate the gluonic structure of nuclei within a mean-field model of nuclear structure based upon the modification of the structure of a bound nucleon, with the nucleon described by the Nambu–Jona-Lasinio model. This approach has been shown to reproduce the European Muon Collaboration (EMC) effect, involving the ratio of the spin-independent structure functions of a heavier nucleus to that of the deuteron. It also predicts a significant nuclear modification for the spin structure functions, known as the polarized EMC effect. Here we report sizeable nuclear modifications of the gluon distributions (a ‘gluon EMC effect’) for the ratios of both the unpolarized and polarized gluon distributions in nuclear matter to those of a free nucleon.
Publisher: Elsevier BV
Date: 06-2005
Publisher: American Physical Society (APS)
Date: 29-11-2016
Publisher: American Physical Society (APS)
Date: 17-05-2018
Publisher: Elsevier BV
Date: 03-1990
Publisher: WORLD SCIENTIFIC
Date: 09-2002
Publisher: American Physical Society (APS)
Date: 25-06-2014
Publisher: SAGE Publications
Date: 22-02-2013
Abstract: Posterior reversible encephalopathy syndrome (PRES) is a rare neurological disorder which is increasingly recognized to occur in systemic lupus erythematosus (SLE). The purpose of this study was to identify the characteristics of SLE patients with PRES and the associated factors of the poor outcome among them. We investigated SLE patients who developed PRES between 2005–2011 at the Universiti Kebangsaan Malaysia Medical Centre. A comprehensive literature search was done to find all published cases of PRES in SLE. Pooled analysis was conducted to identify the factors associated with poor outcome. There were 103 cases of PRES in SLE published in the literature but only 87 cases were included in the analysis in view of incomplete in idual data in the remaining cases. The majority of the cases were Asians (74.2%), female (95.4%) with mean age of 26.3 ± 8.8 years. PRES was highly associated with active disease (97.5%), hypertension (91.7%) and renal involvement (85.1%). We found that 79 patients had a full recovery (90.8%) with a mean onset of full clinical recovery in 5.6 ± 4.1 days. On univariate analysis and logistic regression analysis the predictors of poor outcome, defined as incomplete clinical recovery or death, were intracranial hemorrhage, odds ratio (OR) 14 (1.1–187.2), p = 0.04 and brainstem involvement in PRES, OR 10.9 (1.3–90.6), p = 0.003. Intracranial hemorrhage and brainstem involvement were the two important predictors of poor outcome of PRES. Larger prospective studies are needed to further delineate the risk of poor outcome among them.
Publisher: Journal of the Physical Society of Japan
Date: 23-05-2016
Publisher: American Physical Society (APS)
Date: 28-04-2009
Publisher: IOP Publishing
Date: 2005
Publisher: American Physical Society (APS)
Date: 02-06-2004
Publisher: Elsevier BV
Date: 2000
Publisher: Elsevier BV
Date: 02-2016
Publisher: Sissa Medialab
Date: 05-12-2019
DOI: 10.22323/1.363.0002
Publisher: American Physical Society (APS)
Date: 14-07-2005
Publisher: IOP Publishing
Date: 26-05-2006
Publisher: AIP
Date: 2012
DOI: 10.1063/1.3700496
Publisher: Elsevier BV
Date: 06-1989
Publisher: American Physical Society (APS)
Date: 18-04-2014
Publisher: American Physical Society (APS)
Date: 02-12-2020
Publisher: Springer Science and Business Media LLC
Date: 03-12-2011
No related grants have been discovered for Anthony Thomas.