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| 1 | Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India显示文摘The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies(FTIR, Raman, UV-visible) of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ ·mol-1, and two successive structural changes of silica at 848 K and 1145 K. | Ritayan Chatterjee Shamik Chaudhuri Saikat Kumar Kuila Dinabandhu Ghosh | 2015 | International Journal of Minerals,Metallurgy and Materials2015，22，3： | 2 |
| 2 | A characterization of semirings which are subdirect products of a distributive lattice and a ring显示文摘 | Ghosh Shamik | 1999 | Semigroup Forum1999，59，： | 1 |
| 3 | A characterization of ring congruences on semirings显示文摘 | GHOSH Shamik | 1993 | Soochow Journal of Mathematics1993，19，3： | 1 |
| 4 | A characterization of semirings which are suhdirect products of a distributive lattice and a ring 显示文摘 | Shamik Ghosh | 1999 | Semigroup Forum1999，59，： | 1 |
| 5 | Fuzzy k-ideals of semirings显示文摘 | Shamik Ghosh | 1998 | Fuzzy Sets and Systems1998，95，： | 1 |
| 6 | A characterization of ring congruences on semirings显示文摘 | SHAMIK GHOSH | 1993 | Soochow Journal of Mathematics1993，19，3： | 1 |
| 7 | Erratum to:Forecasts on CMB lensing observations with AliCPT-1显示文摘One of the authors regrets that there was an omission of affiliation in this published article[1].The affiliation information of author Yi-WenWu only included the institution name for the author,and it is advised to add the university as the author’s second affiliation,which is the 16th affiliation of this article. | Jinyi Liu Zeyang Sun Jiakang Han Julien Carron Jacques Delabrouille Siyu Li Yang Liu Jing Jin Shamik Ghosh Bin Yue Pengjie Zhang Chang Feng Zhi-Qi Huang Hao Liu Yi-Wen Wu Le Zhang Zi-Rui Zhang Wen Zhao Bin Hu Hong Li Xinmin Zhang | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，9： | 0 |
| 8 | Forecasts on CMB lensing observations with AliCPT-1显示文摘Ali CPT-1 is the first Chinese cosmic microwave background(CMB) experiment aiming for the high-precision measurement of CMB B-mode polarization. The telescope, currently under deployment in Tibet, will observe in two frequency bands centered at 90 and 150 GHz. We forecast the CMB lensing reconstruction, lensing-galaxy, and lensing-cosmic infrared background(CIB) cross-correlation signal-to-noise ratio(SNR) for Ali CPT-1. We consider two stages with different integrated observation times, namely “4 module*yr”(first stage) and “48 module*yr”(final stage). For lensing reconstruction, we use three different quadratic estimators, namely temperature-only, polarization-only and minimum-variance(MV) estimators, using curved sky geometry. We take into account the impacts of inhomogeneous hit counts and mean-field bias due to incomplete sky coverage.In the first stage, our results show that the 150 GHz channel can measure the lensing signals at 15σ significance with the MV estimator. In the final stage, the measurement significance will increase to 31σ. We also combine the two frequency data in the harmonic domain to optimize the SNR. Our results show that the coadding procedure can significantly reduce the reconstruction bias in the high multiple range. Owning to the high quality of the polarization data in the final stage of Ali CPT-1, the EB estimator will dominate the lensing reconstruction in this stage. We also estimate the SNR of cross-correlations between Ali CPT-1 CMB lensing and other tracers of the large scale structure of the universe. For its cross-correlation with Dark Energy Spectroscopic Instrument(DESI) galaxies/quasars, we report the cross-correlation SNR = 10-20 for the four redshift bins at 0.05 < z < 2.1. In the first stage, the total SNR is approximately 32. In the final stage, the lensing-galaxy cross-correlation can reach SNR = 52. For lensing-CIB cross-correlation, in the first stage, the cross-correlations between Ali CPT-1 lensing and Planck CIB 353, 545 and857 GHz channels are approximately SNR = 18, 19, and 23, respectively. In the final stage, the cross-correlations can reach SNR = 25, 33 and 42. Due to the strong correlations between frequency bands, the total lensing-CIB cross-correlations by combining the three frequencies in Planck CIBs are SNR = 23 and 43 for the Ali CPT-1 first and final stages, respectively. | Jinyi Liu Zeyang Sun Jiakang Han Julien Carron Jacques Delabrouille Siyu Li Yang Liu Jing Jin Shamik Ghosh Bin Yue Pengjie Zhang Chang Feng Zhi-Qi Huang Hao Liu Yi-Wen Wu Le Zhang Zi-Rui Zhang Wen Zhao Bin Hu Hong Li Xinmin Zhang | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，10： | 0 |
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