Research Repository

See what's under the surface


Microwave synthesis of carbon onions in fractal aggregates using heavy oil as a precursor (2018)
Journal Article
Adam, M., Hart, A., Stevens, L. A., Wood, J., Robinson, J. P., & Rigby, S. P. (2018). Microwave synthesis of carbon onions in fractal aggregates using heavy oil as a precursor. Carbon, 138, (427-435). doi:10.1016/j.carbon.2018.07.066. ISSN 0008-6223

In this work we report a method for preparing carbon onions through microwave heating of heavy oil. It was shown that microwave heating of heavy oil mixed with a carbon catalyst at 300 W leads to the growth of a several-centimetre long fractal carbon... Read More

Microwave pyrolysis of biomass within a liquid medium (2018)
Journal Article
Shepherd, B., Ryan, J., Adam, M., Beneroso Vallejo, D., Castaño, P., Kostas, E., & Robinson, J. (2018). Microwave pyrolysis of biomass within a liquid medium. Journal of Analytical and Applied Pyrolysis, doi:10.1016/j.jaap.2018.07.004. ISSN 0165-2370

A new approach to pyrolysis is demonstrated that uses microwave heating combined with an external liquid media at atmospheric pressure. The liquid acts as the inerting medium instead of the traditional inert gas, and also acts as a heat-sink to maint... Read More

The shape dependence of chameleon screening (2018)
Journal Article
Burrage, C., Copeland, E. J., Moss, A., & Stevenson, J. A. (2018). The shape dependence of chameleon screening. Journal of Cosmology and Astroparticle Physics, 2018(1), doi:10.1088/1475-7516/2018/01/056. ISSN 1475-7516

Chameleon scalar fields can screen their associated fifth forces from detection by changing their mass with the local density. These models are an archetypal example of a screening mechanism, and have become an important target for both cosmological... Read More

Impact of oil composition on microwave heating behavior of heavy oils (2018)
Journal Article
Zhang, Y., Adam, M., Hart, A., Wood, J., Rigby, S. P., & Robinson, J. P. (in press). Impact of oil composition on microwave heating behavior of heavy oils. Energy and Fuels, doi:10.1021/acs.energyfuels.7b03675. ISSN 0887-0624

Electromagnetic heating techniques have recently received significant attention as alternatives to conventional heating methods for thermal processing of viscous and heavy oils. One of the benefits of electromagnetic heating is that the electromagnet... Read More

Microwave fluidized bed for biomass pyrolysis. Part II: Effect of process parameters (2017)
Journal Article
Adam, M., Beneroso, D., Katrib, J., Kingman, S., & Robinson, J. P. (in press). Microwave fluidized bed for biomass pyrolysis. Part II: Effect of process parameters. Biofuels, Bioproducts and Biorefining, doi:10.1002/bbb.1781. ISSN 1932-104X

The microwave fluidized bed process developed in Part I (DOI: 10.1002/bbb.1780), in which the heating heterogeneity issues are overcome, has been applied to the pyrolysis of biomass. The degree of pyrolysis was established by studying the behavior of... Read More

Microwave fluidized bed for biomass pyrolysis. Part I: Process design (2017)
Journal Article
Adam, M., Beneroso, D., Katrib, J., Kingman, S., & Robinson, J. P. (in press). Microwave fluidized bed for biomass pyrolysis. Part I: Process design. Biofuels, Bioproducts and Biorefining, doi:10.1002/bbb.1780. ISSN 1932-104X

The production of bio-oils from microwave pyrolysis has received increasing attention from bioenergy researchers, but no studies reported to date have proposed reliable solutions to avoid thermal runaway. The motivation of this paper is to develop an... Read More

First discoveries of z > 6 quasars with the DECam Legacy Survey and UKIRT hemisphere survey (2017)
Journal Article
Wang, F., Fan, X., Yang, J., Wu, X., Yang, Q., Bian, F., …Shanks, T. (2017). First discoveries of z > 6 quasars with the DECam Legacy Survey and UKIRT hemisphere survey. Astrophysical Journal, 839(1), doi:10.3847/1538-4357/aa689f. ISSN 0004-637X

We present the first discoveries from a survey of z 6 quasars using imaging data from the DECam Legacy Survey (DECaLS) in the optical, the UKIRT Deep Infrared Sky Survey (UKIDSS) and a preliminary version of the UKIRT Hemisphere Survey (UHS) in the... Read More

Deep recurrent neural networks for supernovae classification (2017)
Journal Article
Charnock, T., & Moss, A. (2017). Deep recurrent neural networks for supernovae classification. Astrophysical Journal, 837(2), doi:10.3847/2041-8213/aa603d. ISSN 0004-637X

We apply deep recurrent neural networks, which are capable of learning complex sequential information, to classify supernovae (code available at https://github.com/adammoss/supernovae). The observational time and filter fluxes are used as inputs to t... Read More

Planck intermediate results. XLVII. Planck constraints on reionization history (2016)
Journal Article
Adam, R., Aghanim, N., Ashdown, M., Aumont, J., Baccigalupi, C., Ballardini, M., …Zonca, A. (in press). Planck intermediate results. XLVII. Planck constraints on reionization history. Astronomy and Astrophysics, 596, doi:10.1051/0004-6361/201628897. ISSN 0004-6361

We investigate constraints on cosmic reionization extracted from the Planck cosmic microwave background (CMB) data. We combine the Planck CMB anisotropy data in temperature with the low-multipole polarization data to fit ΛCDM models with various para... Read More

Planck intermediate results. XLIX. Parity-violation constraints from polarization data (2016)
Journal Article
Aghanim, N., Ashdown, M., Aumont, J., Baccigalupi, C., Ballardini, M., Banday, A., …Zonca, A. (in press). Planck intermediate results. XLIX. Parity-violation constraints from polarization data. Astronomy and Astrophysics, 596, doi:10.1051/0004-6361/201629018. ISSN 1432-0746

Parity-violating extensions of the standard electromagnetic theory cause in vacuo rotation of the plane of polarization of propagating photons. This effect, also known as cosmic birefringence, has an impact on the cosmic microwave background (CMB) an... Read More

The effect of carboxylate position on the structure of a metal organic framework derived from cyclotriveratrylene (2016)
Journal Article
Martin, A. D., Easun, T. L., Argent, S. P., Lewis, W., Blake, A. J., & Schröder, M. (in press). The effect of carboxylate position on the structure of a metal organic framework derived from cyclotriveratrylene. CrystEngComm, 19, doi:10.1039/C6CE01965J. ISSN 1466-8033

Two cyclotriveratrylene-based ligands H3L1 and H3L2 have been synthesised using microwave heating and used in the formation of 1 [Zn2(L1)(DMA)2(CH3COO)] and 2 [Zn6(L2)4(DMA)6(H2O)5] (DMA = N,N-dimethylacetamide). 1 displays an unusual trigonal paddle... Read More

Planck 2015 results. XXIV. Cosmology from Sunyaev-Zeldovich cluster counts (2016)
Journal Article
Ade, P., Aghanim, N., Arnaud, M., Ashdown, M., Aumont, J., Baccigalupi, C., …Zonca, A. (in press). Planck 2015 results. XXIV. Cosmology from Sunyaev-Zeldovich cluster counts. Astronomy and Astrophysics, 594, doi:10.1051/0004-6361/201525833. ISSN 1432-0746

We present cluster counts and corresponding cosmological constraints from the Planck full mission data set. Our catalogue consists of 439 clusters detected via their Sunyaev-Zeldovich (SZ) signal down to a signal-to-noise ratio of 6, and is more than... Read More

Planck 2015 results. XIX. Constraints on primordial magnetic fields (2016)
Journal Article
Ade, P., Aghanim, N., Arnaud, M., Arroja, F., Ashdown, M., Aumont, J., …Zonca, A. (in press). Planck 2015 results. XIX. Constraints on primordial magnetic fields. Astronomy and Astrophysics, 594, doi:10.1051/0004-6361/201525821. ISSN 1432-0746

We compute and investigate four types of imprint of a stochastic background of primordial magnetic fields (PMFs) on the cosmic microwave background (CMB) anisotropies: the impact of PMFs on the CMB temperature and polarization spectra, which is relat... Read More

Planck 2015 results. XX. Constraints on inflation (2016)
Journal Article
Ade, P., Aghanim, N., Arnaud, M., Arroja, F., Ashdown, M., Aumont, J., …Zonca, A. (in press). Planck 2015 results. XX. Constraints on inflation. Astronomy and Astrophysics, 594, doi:10.1051/0004-6361/201525898. ISSN 1432-0746

We present the implications for cosmic inflation of the Planck measurements of the cosmic microwave background (CMB) anisotropies in both temperature and polarization based on the full Planck survey, which includes more than twice the integration tim... Read More

Planck 2015 results. XVII. Constraints on primordial non-Gaussianity (2016)
Journal Article
Ade, P., Aghanim, N., Arnaud, M., Arroja, F., Ashdown, M., Aumont, J., …Zonca, A. (in press). Planck 2015 results. XVII. Constraints on primordial non-Gaussianity. Astronomy and Astrophysics, 594, doi:10.1051/0004-6361/201525836. ISSN 1432-0746

The Planck full mission cosmic microwave background (CMB) temperature and E-mode polarization maps are analysed to obtain constraints on primordial non-Gaussianity (NG). Using three classes of optimal bispectrum estimators – separable template-fittin... Read More

Planck 2015 results. I. Overview of products and scientific results (2016)
Journal Article
Adam, R., Ade, P., Aghanim, N., Akrami, Y., Alves, M., Argüeso, F., …Zonca, A. (2016). Planck 2015 results. I. Overview of products and scientific results. Astronomy and Astrophysics, 594, doi:10.1051/0004-6361/201527101. ISSN 1432-0746

The European Space Agency’s Planck satellite, which is dedicated to studying the early Universe and its subsequent evolution, was launched on 14 May 2009. It scanned the microwave and submillimetre sky continuously between 12 August 2009 and 23 Octob... Read More