Suppressing stick-slip oscillations in underactuated multibody drill-strings with parametric uncertainties using sliding-mode control.

Liu, Yang

doi:10.1049/iet-cta.2014.0329

Characterization of biomass combustion at high temperatures based on an upgraded single particle model. (2015)
Journal Article
LI, J., PAUL, M.C., YOUNGER, P.L., WATSON, I., HOSSAIN, M. and WELCH, S. 2015. Characterization of biomass combustion at high temperatures based on an upgraded single particle model. Applied energy [online], 156, pages 749-755. Available from: https://doi.org/10.1016/j.apenergy.2015.04.027

Biomass co-firing is becoming a promising solution to reduce CO2 emissions, due to its renewability and carbon neutrality. Biomass normally has high moisture and volatile contents, complicating its combustion behavior, which is significantly differen... Read More about Characterization of biomass combustion at high temperatures based on an upgraded single particle model..

LED-controlled tuning of ZnO nanowires' wettability for biosensing applications. (2015)
Journal Article
BHAVSAR, K., ROSS, D., PRABHU, R. and POLLARD, P. 2014. LED-controlled tuning of ZnO nanowires' wettability for biosensing applications. Nano reviews [online], 6, Article 26711. Available from:https://doi.org/10.3402/nano.v6.26711

Background: Wettability is an important property of solid materials which can be controlled by surface energy. Dynamic control over the surface wettability is of great importance for biosensing applications. Zinc oxide (ZnO) is a biocompatible materi... Read More about LED-controlled tuning of ZnO nanowires' wettability for biosensing applications..

Role of feed-in tariff policy in promoting solar photovoltaic investments in Malaysia: a system dynamics approach. (2015)
Journal Article
AHMAD, S., TAHAR, R.M., MUHAMMAD-SUKKI, F., MUNIR, A.B. and RAHIM, R.A. 2015. Role of feed-in tariff policy in promoting solar photovoltaic investments in Malaysia: a system dynamics approach. Energy [online], 84, pages 808-815. Available from: https://doi.org/10.1016/j.energy.2015.03.047

Solar photovoltaic has shown a significant rise in terms of worldwide installation. One of the main reason is due to the introduction of the FiT (feed-in tariff) policy by the governments. This paper aims to evaluate FiT policy in promoting solar PV... Read More about Role of feed-in tariff policy in promoting solar photovoltaic investments in Malaysia: a system dynamics approach..

Method to discard partial discharge (PD) pulses from neighboring high voltage equipment. (2015)
Journal Article
MOHAMED, F.P., SIEW, W.H., STRACHAN, S.S., AYUB, A.S. and MCLELLAN, K. 2015. Method to discard partial discharge (PD) pulses from neighboring high voltage equipment. High voltage engineering [online], 4, pages 1125-1131. Available from: http://caod.oriprobe.com/articles/44523683/Method_to_Discard_Partial_Discharge_Pulses_from_Neighboring_High_Volta.htm

On-line partial discharge (PD) diagnostics data are corrupted by various noise sources and this makes it more challenging to extract the PD signal contained in the raw data. Though the noise sources can be filtered out using signal processing techniq... Read More about Method to discard partial discharge (PD) pulses from neighboring high voltage equipment..

Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact. (2015)
Journal Article
DROUBI, M.G., REUBEN, R.L. and WHITE, G. 2015. Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact. Mechanical systems and signal processing [online], 62-63, pages 415-430. Available from: https://doi.org/10.1016/j.ymssp.2015.01.023

A series of systematic impact tests have been carried out to investigate the influence of particle size, free stream velocity, particle impact angle, and nominal particle concentration on the amount of energy dissipated in a carbon steel target using... Read More about Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact..

Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production. (2015)
Journal Article
GANESH BABU, S., VINOTH, R., KUMAR, D.P., SHANKAR, M.V., CHOU, H.-L., VINODGOPAL, K. and NEPPOLIAN, B. 2015. Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production. Nanoscale [online], 7(17), pages 7849-7857. Available from: https://doi.org/10.1039/C5NR00504C

Herein we report the simple, low-cost and scalable preparation of reduced graphene oxide (rGO) supported surfactant-free Cu2O–TiO2 nanocomposite photocatalysts by an ultrasound-assisted wet impregnation method. Unlike conventional preparation techniq... Read More about Influence of electron storing, transferring and shuttling assets of reduced graphene oxide at the interfacial copper doped TiO2 p–n heterojunction for increased hydrogen production..

Highly textured and transparent RF sputtered Eu2O3 doped ZnO films. (2015)
Journal Article
SREEDHARAN, R. S., GANESAN, V., SUDARSANAKUMAR, C. P., BHAVSAR, K., PRAHBU, R. and PILLAI, V.P.P.M., 2015. Highly textured and transparent RF sputtered Eu2O3 doped ZnO films. Nano reviews [online], 6, Article 26759. Available from: https://doi.org/10.3402/nano.v6.26759

Background: Zinc oxide (ZnO) is a wide, direct band gap II-VI oxide semiconductor. ZnO has large exciton binding energy at room temperature, and it is a good host material for obtaining visible and infrared emission of various rare-earth ions. Method... Read More about Highly textured and transparent RF sputtered Eu2O3 doped ZnO films..

Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst. (2015)
Journal Article
GANESH BABU, S., VINOTH, R., NEPPOLIAN, B., DIONYSIOU, D.D. and ASHOKKUMAR, M. 2015. Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst. Journal of hazardous materials [online], 291, pages 83-92. Available from: https://doi.org/10.1016/j.jhazmat.2015.02.071

Diffused sunlight is found to be an effective light source for the efficient degradation and mineralization of organic pollutant (methyl orange as a probe) by sono-photocatalytic degradation using reduced graphene oxide (rGO) supported CuO–TiO2 photo... Read More about Diffused sunlight driven highly synergistic pathway for complete mineralization of organic contaminants using reduced graphene oxide supported photocatalyst..

The prospect of deepwater heavy oil production using CO2-EOR. (2015)
Journal Article
TCHAMBAK, E., OYENEYIN, B. and OLUYEMI, G. 2015. The prospect of deepwater heavy oil production using CO2-EOR. Energy sources, part A: recovery, utilization and environmental effects [online], 37(3), pages 318-325. Available from: https://doi.org/10.1080/15567036.2011.585373

The prospect of unconventional oil development has long been coming to offset the rapid decline of conventional crude. And looking ahead, the worry is already turning away from the onshore exploitation to the challenging offshore environment, with th... Read More about The prospect of deepwater heavy oil production using CO2-EOR..

Angular dependent light emission from planar waveguides. (2015)
Journal Article
PETER, J., PRABHU, R., RADHAKRISHNAN, P., VALLABHAN, C.P.G., NAMPOORI, V.P.N. and KAILASNATH, M. 2015. Angular dependent light emission from planar waveguides. Journal of applied physics, 117(1), Article 015301. Available from: https://doi.org/10.1063/1.4905011

We have investigated the angular dependence of amplified spontaneous emission (ASE) and laser emission from an asymmetric and free-standing polymer thin films doped with rhodamine 6G, which is transversely pumped by a pulsed Nd:YAG laser. A semi-leak... Read More about Angular dependent light emission from planar waveguides..

Suppressing stick-slip oscillations in underactuated multibody drill-strings with parametric uncertainties using sliding-mode control. (2015)
Journal Article
LIU, Y. 2015. Suppressing stick-slip oscillations in underactuated multibody drill-strings with parametric uncertainties using sliding-mode control. IET control theory and applications [online], 9(1), pages 91-102. Available from: https://doi.org/10.1049/iet-cta.2014.0329

Stabilisation of multibody drill-strings which exhibit stick-slip oscillations is studied in this paper from the point of view of underactuated system. The model has one control torque input acting on the rotary table from the land surface and multi-... Read More about Suppressing stick-slip oscillations in underactuated multibody drill-strings with parametric uncertainties using sliding-mode control..

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