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Heng, D. Y. C.,Choueiri, T. K.,Rini, B. I.,Lee, J.,Yuasa, T.,Pal, S. K.,Srinivas, S.,Bjarnason, G. A.,Knox, J. J.,MacKenzie, M.,Vaishampayan, U. N.,Tan, M. H.,Rha, S. Y.,Donskov, F.,Agarwal, N.,Kollma Oxford University Press 2014 ANNALS OF ONCOLOGY Vol.25 No.1
<P>This study focuses on the outcomes of a large international cohort of patients with metastatic RCC who would not have met the eligibility criteria for clinical trials and compares these to those that would have eligible. The proportion of patients who would have been ineligible and the reason for ineligibility are also discussed.</P>
A Non-thermal Pulsed X-Ray Emission of AR Scorpii
Takata, J.,Hu, C.-P.,Lin, L. C. C.,Tam, P. H. T.,Pal, P. S.,Hui, C. Y.,Kong, A. K. H.,Cheng, K. S. American Astronomical Society 2018 The Astrophysical journal Vol.853 No.2
<P>We report the analysis result of UV/X-ray emission from AR. Scorpii, which is an intermediate polar (IP) composed of a magnetic white dwarf and an M-type star, with the XMM-Newton data. The X-ray/UV emission clearly shows a large variation over the orbit, and their intensity maximum (or minimum) is located at the superior conjunction (or inferior conjunction) of the M star orbit. The hardness ratio of the X-ray emission shows a small variation over the orbital phase and shows no indication of the absorption by an accretion column. These properties are naturally explained by the emission from the M star surface rather than that from the accretion column on the white dwarf's (WD) star, which is similar to usual IPs. Additionally, the observed X-ray emission also modulates with the WD's spin with a pulse fraction of similar to 14%. The peak position is aligned in the optical/UV/X-ray band. This supports the hypothesis that the electrons in AR. Scorpii are accelerated to a relativistic speed and emit non-thermal photons via the synchrotron radiation. In the X-ray bands, evidence of the power-law spectrum is found in the pulsed component, although the observed emission is dominated by the optically thin thermal plasma emissions with several different temperatures. It is considered that the magnetic dissipation/reconnection process on the M star surface heats up the plasma to a temperature of several keV and also accelerates the electrons to the relativistic speed. The relativistic electrons are trapped in the WD's closed magnetic field lines by the magnetic mirror effect. In this model, the observed pulsed component is explained by the emissions from the first magnetic mirror point.</P>
Effect of fillers on natural rubber/high styrene rubber blends with nano silica: Morphology and wear
Pal, K.,Rajasekar, R.,Kang, D.J.,Zhang, Z.X.,Pal, S.K.,Das, C.K.,Kim, J.K. Scientific and Technical Press ; Elsevier Science 2010 Materials & design Vol.31 No.2
The blends of high styrene rubber (HSR) and natural rubber (NR) with nano silica were prepared using a blending technique in presence of different types of carbon black. The effect of filler on morphological and wear characteristics was studied. ISAF (Intermediate Super Abrasion Furnace) type of carbon black have showed a significant effect on optimum cure time, cure rate index and mechanical properties by reacting at the interface between HSR and NR matrix. All the samples show only one melting peak on the DSC curve; this is attributed to the same backbone structure of the matrix and the carbon black reinforcement. The samples containing 30 wt.% of HSR with ISAF type of carbon black has shown maximum heat buildup, lower swelling and lower compression set value. Blends containing ISAF type of carbon black with 30 wt.% of HSR showed high abrasion resistant properties against Du-Pont abrader, DIN abrader and different mining rock surfaces and also is found to be the toughest rubber against all types of rock. Coal is main abrader against the rubber under this study.
Pal, K.,Rajasekar, R.,Kang, D.J.,Zhang, Z.X.,Pal, S.K.,Kim, J.K.,Das, C.K. Scientific and Technical Press ; Elsevier Science 2010 Materials & design Vol.31 No.1
The blends of high styrene rubber (HSR) and natural rubber (NR) with nitrile blended PVC (NVC) and nanosilica are prepared by using a blending technique in presence of different types of carbon black. The effect of filler on morphological and wear characteristics is studied. ISAF type of carbon black have showed a significant effect on optimum cure time, cure rate index and mechanical properties by reacting at the interface between NVC, HSR and NR matrix. All the samples show only one melting peak on the DSC curve; this is attributed to the same backbone structure of the matrix and the carbon black reinforcement. The samples containing 20wt.% of NVC with ISAF N234 type of carbon black has shown maximum heat buildup and lower compression set value. Blends containing ISAF type of carbon black with 20wt.% of NVC shows high abrasion resistant properties against Du-Pont abrader, DIN abrader and different mining rock surfaces and also is found to be the toughest rubber against all types of rock. Coal is identified the main abrader against the rubber blends under this study.
Pal, K.,Rajasekar, R.,Kang, D.J.,Zhang, Z.X.,Pal, S.K.,Das, C.K.,Kim, J.K. Scientific and Technical Press ; Elsevier Science 2010 MATERIALS AND DESIGN Vol.31 No.3
The effect of fillers on morphology and wear characteristics are studied in butadiene rubber (PBR)/high styrene rubber (HSR)/natural rubber (NR) blends with different types of carbon black. SAF N110 with SRF N774 type of carbon black shows a significant effect on curing studies and mechanical properties by reacting at the interface between PBR, HSR and NR matrix. Blends containing the same carbon blacks show high abrasion resistant properties against Du-Pont abrader, DIN abrader and different mining rock surfaces and also is found to be the toughest rubber against all types of rock.
Relationship between normal load and dynamic co-efficient of friction on rock-rubber wear mechanism
Pal, K.,Pal, S.K.,Das, C.K.,Kim, J.K. Scientific and Technical Press ; Elsevier Science 2010 MATERIALS AND DESIGN Vol.31 No.10
In this study, rubber compounds were produced in varying proportions of carboxylated acrylonitrile butadiene rubber (XNBR) and natural rubber (NR) and the parameters such as cure characteristics, wear behavior against various surfaces at different normal loads, and frictional works were tested. The tensile strength and dynamic co-efficient of friction of sample containing 80wt.% of XNBR was high compared to other samples by 2% and 10% respectively. The results of XNBR and NR vulcanizates under normal pressure ranging from 43 to 118kPa were reported. Based on these results the relationship between normal load and dynamic co-efficient of friction has been proposed. It was also observed that sample containing 80wt.% of XNBR exhibits lesser volume loss than compared to other samples.
Measurement of the branching fraction and time-dependent CP asymmetry for B0→J/ψπ0 decays
Pal, B.,Schwartz, A. J.,Aihara, H.,Al Said, S.,Asner, D. M.,Atmacan, H.,Aulchenko, V.,Aushev, T.,Ayad, R.,Badhrees, I.,Bahinipati, S.,Bansal, V.,Behera, P.,Beleñ,o, C.,Bhuyan, B.,Bilka, T.,Biswa American Physical Society 2018 Physical Review D Vol.98 No.11