Search
Login
UPSpace Home
→
Engineering, Built Environment and Information Technology
→
Mechanical and Aeronautical Engineering
→
Search
JavaScript is disabled for your browser. Some features of this site may not work without it.
Search
Add filters
Filters
Use filters to refine the search results.
Title
Author
Subject
Date issued
Has File(s)
Filename
File description
Contains
Equals
ID
Not Contains
Not Equals
Not ID
Showing 100 out of a total of 2800 results for community: Mechanical and Aeronautical Engineering.
(0.091 seconds)
Now showing items 101-200 of 2800
Previous Page
1
2
3
4
5
. . .
28
Next Page
Sort Options:
Relevance
Title Asc
Title Desc
Issue Date Asc
Issue Date Desc
Results Per Page:
5
10
20
40
60
80
100
Three-dimensional analysis of mixed convection in a differentially heated lid-driven cubic enclosure
Benkacem, Nasreddine
;
Ben Cheikh, Nader
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Two-phase heat transfer and pressure losses of a high pressure refrigerant condensing in a single circular minichannel
Cavallini, A.
;
Bortolin, S.
;
Del Col, D.
;
Matkovic, M.
;
Rossetto, L.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Heat conduction in elastic systems : fourier versus cattaneo
Racke, R.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2015
)
Technical and economic feasibility of a regenerative braking system with on-board energy storage for freight trains
Unknown author
(
University of Pretoria
,
2018
)
Extending the robustness and efficiency of artificial compressibility for partitioned fluid-structure interactions
Bogaers, Alfred Edward Jules
;
Kok, Schalk
;
Reddy, B. Dayanand, 1953-
;
Franz, Thierry
(
Elsevier
,
2015-01
)
Reducing the optical end losses of a linear Fresnel reflector using novel techniques
Bellos, Evangelos
;
Tzivanidis, Christos
;
Moghimi Ardekani, Mohammad
(
Elsevier
,
2019-07
)
Renewable oxygenated additives in biofuels : high pressure densities of mixtures dibutyl-ether + heptane at high temperature and pressure
Alaoui, F.
;
González-Fernández, M.J.
;
Muñoz, N.
;
Aguilar, F.
;
Montero, E.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Adsorption isothermal CO2 on activated carbon from low rank coal of Indonesia
Alhamid, Muhammad Idrus
;
Martin, Awaludin
;
Suryawan, Bambang
;
Nasruddin
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Thermodynamic analysis of water boiling in presence of a non-condensable gas, the carbon dioxide (co2) : application to geothermal flows in wellbores
Thiagalingam, I.
;
Bergez, W.
;
Colin, C.
(
HEFAT
,
2017
)
Experiences with mobile, stand-alone test facility for solar thermal collectors and systems
Bestenlehner, Dominik
;
Qually, Davin
;
Deist, Karel
;
van Hoeve, Cornelis
;
Drück, Harald
;
Müller-Steinhagen, Hans
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Heat transfer and pressure drop in annuli with non-uniform internal wall temperatures in the transition flow regime
Unknown author
(
University of Pretoria
,
2017
)
Thermal performance and heat transfer enhancement of parabolic trough receivers – numerical investigation, thermodynamic and multi-objective optimisation
Unknown author
(
University of Pretoria
,
2015
)
Drag reduction of a spiral pipe flow by nata de coco suspensions
Yanuar
;
Gunawan
;
Satoshi Ogata
(
HEFAT
,
2016
)
Facile preparation of concentrated silver and copper heat transfer nanocolloids
Puupponen, Salla
;
Granbohm, Henrika
;
Haimi, Eero
;
Ge, Yanling
;
Ala-Nissila, Tapio
;
Seppala, Ari
(
HEFAT
,
2016
)
Contactless method of specific heat capacity determination
Spicka, I.
;
Kostial, P.
;
Kostialova, Jancikova Z.
;
Zimny, O.
;
Heger, M.
(
HEFAT
,
2017
)
Ultra-downsizing of internal combustion engines: simultaneous increasing of thermal converssion efficiency and power while reducing emissions
Gheorghiu, Victor
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2011
)
Optimization of window solar gain for a building with less cooling load
Mustafa, Jawed
;
Alqaed, Saeed
;
Sharifpur, Mohsen
;
Meyer, Josua P.
(
Elsevier
,
2024-01
)
Spin-polarized electron transfer in multilayers with different types of rough interfaces
Ramezani, A.H.
;
Hoseinzadeh, Siamak
;
Ebrahiminejad, Z.H.
;
Masoudi, S.F.
;
Hashemizadeh, A.
(
Springer
,
2020-05
)
Low-cost bilayered structure for improving the performance of solar stills : performance/cost analysis and water yield prediction using machine learning
Elsheikh, Ammar H.
;
Shanmugan, S.
;
Sathyamurthy, Ravishankar
;
Thakur, Amrit Kumar
;
Issa, Mohamed
;
Panchal, Hitesh
;
Muthuramalingam, T.
;
Kumar, Ravinder
;
Sharifpur, Mohsen
(
Elsevier
,
2022-02
)
Towards a Deep Reinforcement Learning based approach for real-time decision making and resource allocation for Prognostics and Health Management applications
Unknown author
(
University of Pretoria
,
2020
)
Numerical modeling of multiphase flow through micro- and macro- pores of clay landfill caps using Lattice Boltzmann method
Kutay, M. E.
;
Khire, M.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Plastic helical coil heat exchanger as an alternative for a domestic water storage tank
Bokisova, L.
;
Bagci, O.
;
Sharif, A.
;
Beyne, W.
;
Daenens, D.
;
De Paepe, M.
(
HEFAT
,
2017
)
Experimental investigation of the impact of non-uniform heat flux on boiling in a horizontal circular test section
Unknown author
(
University of Pretoria
,
2021
)
Effect of saturation temperature on the condensation of R134a inside an inclined smooth tube
Noori Rahim Abadi, Seyyed Mohammad Ali
;
Mehrabi, Mehdi
;
Meyer, Josua P.
;
Dirker, Jaco
(
Elsevier
,
2018-10
)
Experimental investigations of two-phase liquid-liquid horizontal flows through orifice plates
Morgan, R.G.
;
Sharaf, S.
;
Zadrazil, I.
;
Hewitt, G.F.
;
Markides, Christos N.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Experimental study of convective condensation of R134a in an inclined tube
Unknown author
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2011
)
Experimental investigation of frictional pressure drop in inclined tubes
adekunle.adelaja@up.ac.za
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2015
)
Non-boiling heat transfer in horizontal and near horizontal downward inclined gas-liquid two phase flow
Hossainy, T.A.
;
Bhagwat, S.M.
;
Ghajar, A.J.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Insights into the use of linear regression techniques in response reconstruction
Unknown author
(
University of Pretoria
,
2021-02
)
Performance of ocean hydrate-based engine for ocean thermal energy conversion system
Ohfuka, Y.
;
Ohmura, R.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2015
)
Optimal design of axial noble metal distribution for improving the performance of a dual monolithic catalytic converter
Kim, Y.-D.
;
Shim, S.-M.
;
Jeong, S.-J.
;
Kim, W.-S.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
A dynamic control model to improve the response speed for an air-condition system
Wang, J.
;
Geng, S.B.
;
Yuan, L.
(
HEFAT
,
2016
)
Pitch handling qualities investigation of the tailless gull-wing configuration
Agenbag, Daniel Sarel
;
Theron, Nicolaas J.
;
Huyssen, R. Joachim
(
American Institute of Aeronautics and Astronautics
,
2009-03
)
The effects of the M-cycle on the performance of a gas turbine
Jenkins, Peter E.
;
Carty, Jason
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Simulation of building thermal performance in an institutional building in subtropical climate
Chowdhury, Ashfaque Ahmed
;
Rasul, M.G.
;
Khan, M.M.K.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2007
)
Fatigue equivalent static load: Methodology for the design of vehicle structures
Unknown author
(
University of Pretoria
,
2003
)
ABS braking on rough terrain
Unknown author
(
University of Pretoria
,
2017
)
The ride comfort versus handling decision for off-road vehicles
Unknown author
(
University of Pretoria
,
2007-11-26
)
Combined production of electricity and heat in a microcogeneration unit
Alvaro, F.C.
;
Del Carpio, H.J.
;
Jimenez, H.G.
;
Milón, J.J.
;
Braga, S.L.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Slow active suspension control for rollover prevention
Unknown author
(
University of Pretoria
,
2012
)
Development of numerical analysis method based on staggered grid for arbitrary 3-dimensional mesh shape for two-phase three-field model
Hong, S.-J.
;
Choo, Y.-J.
;
Hwang, S.-H.
;
Han, T.-Y.
;
Park, G.-C.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Application of COCOSYS code for investigation of gas mixing in mistra test facility
Rimkevicius, S.
;
Uspuras, E.
;
Urbonavicius, E.
;
Babilas, E.
;
Povilaitis, M.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Experimental study of effect of angular orientation on flame spread over thin solid fuels
Avinash, G
;
Kumar, Amit
;
Raghavan, Vasudevan
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Modelling and characterization of a modified 3-DoF pneumatic Gough-Stewart platform
Unknown author
(
University of Pretoria
,
2016
)
Experimental studies on thermal protective coating for low pressure gas turbine blades
Vinoth, Kumar Annamalai
;
Vijay, Anand M.
;
Jerish, Duthie J.
;
Archana, S.
;
Srinivasan, S.
;
Sanal, Kumar V.R.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Reduction of rolling contact fatigue through the control of the wheel wear shape
Unknown author
(
University of Pretoria
,
2017
)
Convection heat transfer, entropy generation analysis and thermodynamic optimization of nanofluid flow in spiral coil tube
Kadivar, Mohammadreza
;
Sharifpur, Mohsen
;
Meyer, Josua P.
(
Taylor and Francis
,
2021
)
Feasibility study on the implementation of a boiling condenser in a South African fossil fuel power plant
Unknown author
(
University of Pretoria
,
2016
)
Thermo-hydraulic performance comparison of steady laminar flow channels
Kim, K.W.
;
Hah S. R.
(
HEFAT
,
2016
)
Secondary flow and upstream film cooling in a linear NGV cascade in compressible flows: computations and experiments
Saha, Arun K.
;
Acharya, Sumanta
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Techno-economic study of compound parabolic collector in solar water heating system in the northern hemisphere
Azad Gilani, Hooman
;
Hoseinzadeh, Siamak
(
Elsevier
,
2021-05
)
Numerical study of the effect of liquid sloshing inside TLD on suppression of gust wind-induced vibration in high rise buildings
Oda, T.F.
;
Hamed, M.S.
;
Ghani, S.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Modes of ferrodroplet breakup in a narrow passage
Chen, C.-H.
;
Chen, C.-Y.
;
Hong, C.-Y.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2007
)
Grid refinement studies of fully developed turbulent flow using second order turbulence models
Afshar, M.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Experimental evaluation of refrigerants R290, R32 and R410a in a refrigeration system originally designed for R22
Antunes, A.H.P.
;
Bandarra Filho, E.P.
;
Mendonza, O.S.H.
;
Souza, L.M.P.
;
Bertoni, M.A.R.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Towards a hybrid approach for diagnostics and prognostics of planetary gearboxes
Unknown author
(
University of Pretoria
,
2021
)
An experimental and numerical study of heat transfer augmentation near the entrance to a film cooling hole
Unknown author
(
University of Pretoria
,
2008-09-19
)
The economic viability of a microturbine cogeneration system
Denys, N.
(
Heat Transfer, Fluid Mechanics and Thermodynamics
,
2002
)
Effective optical depth as a means of simplifying radiation-conduction analysis
Anderson, Edward E.
;
Hu, Zirong
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2007
)
A new theoretical thermodynamic model for the solubility of acid gases in aqueous solution of N-Methylidethanolamine
Alhseinat, E.
;
Peters, C.
;
Bnat, F.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Investigation of forests as factor of aerodynamic protection of settlements from dust storms and industrial polution
Vasenin, I.M.
;
Khmeleva, M.G.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Continuous cast width control using a data mining approach
De Beer, P.G.
;
Craig, K.J. (Kenneth)
(
Maney
,
2008
)
Simulation of a parabolic trough solar collector containing hybrid nanofluid and equipped with compound turbulator to evaluate exergy efficacy and thermal- hydraulic performance
Khetib, Yacine
;
Alahmadi, Ahmad
;
Alzaed, Ali
;
Sharifpur, Mohsen
;
Cheraghian, Goshtasp
;
Siakachoma, Cornelius
(
Wiley
,
2022-11
)
Low grade waste heat recovery in an intercooled recuperated closed cycle gas turbine
Tauveron, N.
;
Barbier, D.
(
HEFAT
,
2016
)
Flow behaviour of glycolated water suspensions of functionalized graphene nanoplatelets
Gomez-Barreiro, S.
;
Vallejo, J.P.
;
Cabaleiro, D.
;
Gracia-Fernandez, C.
;
Fernandez-Seara, J.
;
Lugo, L.
(
HEFAT
,
2016
)
Void fraction and flow patterns of two-phase gas-liquid flow in various pipe inclinations
Ghajar, Afshin J.
;
Tang, Clement C.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Two-phase flow in inclined tubes with specific reference to condensation : a review
Lips, Stephane
;
Meyer, Josua P.
(
Elsevier
,
2011-10
)
Heat transfer and pressure drop in annuli with approximately uniform internal wall temperatures in the transitional flow regime
Ndenguma, Dickson Daniel
;
Dirker, Jaco
;
Meyer, Josua P.
(
Elsevier
,
2017-08
)
Computational study of stratified two phase oil/water flow in horizontal pipes
Kumara, W.A.S.
;
Elseth, G.
;
Halvorsen, B.M.
;
Melaaen, M.C.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Lattice Monte Carlo simulation of thermal conductivity in composite materials
Cheng, Z.
;
Liu, Z.
;
Wanga, D.
;
Wanga, Y.
;
Yanga, J.
;
Liu, W.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Numerical simulation of internal channel cooling via jet impingement in fluent and its sensitivity study
Janajreh, I.
;
Sarfraz, O.
;
Ghenai, C.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Heat transfer coefficients for quasi-turbulent and turbulent flow in solar receiver tubes
Everts, Marilize
;
Meyer, Josua P.
(
American Institute of Physics
,
2019-07-26
)
Production of boron carbide by carbothermal reduction of boron oxide and petroleum coke
Amini, H.
;
Azarfar, M. A.
;
Dehcordi, H.
;
Malekpour, A.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Investigation into thermal-fluid properties of hybrid ferrofluids as heat transfer fluids
Unknown author
(
University of Pretoria
,
2019
)
Finite element solution of Navier-Stokes equations using Krylov Subspace methods
Vujičić, RM
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Single-phase heat transfer and pressure drop of the cooling of water inside smooth tubes for transitional flow with different inlet geometries (RP-1280)
Olivier, J.A.
;
Meyer, Josua P.
(
ASHRAE
,
2010-07
)
Challenges and solutions to arc-length controlled structural shape design problems
Bouwer, Johann M.
;
Kok, Schalk
;
Wilke, Daniel Nicolas
(
Taylor and Francis
,
2023
)
Natural convection heat and momentum transfer in square cavities discretely heated from below and cooled from above and one side
Cianfrini, C.
;
Corcione, M.
;
Habib, E.
;
Quintino, A.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2012
)
Selected papers from the sixth HEFAT conference
Meyer, Josua P.
(
Routledge
,
2011
)
The application of Eulerian laser Doppler vibrometry to the on-line condition monitoring of axial-flow turbomachinery blades
Unknown author
(
University of Pretoria
,
2010-09-13
)
Developing new phase change material components to improve energy savings and comfort in buildings
Bontemps, A.
;
Royon, L.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2011
)
Structural integrity monitoring using vibration measurements
Unknown author
(
University of Pretoria
,
2006-07-12
)
A study of heat transfer enhancement on a tilted rectangular stainless steel plate
Nabhan, M.B.W.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Finite element modelling of microwave pyrolysis of biomass
Dutta, B.
;
Dev, S.R.S.
;
Gariepy, Y.
;
Raghavan, G.S.V.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2010
)
Can nanofluids improve solar collector efficiency
MacDevette, Michelle
;
Reddy, B. Dayanand, 1953-
(
3rd Southern African Solar Energy Conference, South Africa, 11-13 May, 2015.
,
2015
)
Recuperated solar-dish Brayton cycle using turbocharger and short-term thermal storage
Le Roux, Willem Gabriel
;
Sciacovelli, Adriano
(
Elsevier
,
2019-12
)
Thermal analysis of a nanofluid free jet impingement on a rotating disk using volume of fluid in combination with discrete modelling
Mahdavi, Mostafa
;
Sharifpur, Mohsen
;
Meyer, Josua P.
;
Lingen, Chen
(
Elsevier
,
2020-12
)
Pressure drop along a channel with modified short pin-fins
Unknown author
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Vehicle suspension force and road profile prediction on undulating roads
Hamersma, Herman Adendorff
;
Els, Pieter Schalk
(
Taylor and Francis
,
2021
)
Biogas as a fuel source for proton-exchange membrane fuel cell
de Almeida, S.C.A.
;
Nirenberg, H.
;
Freire, E.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
A power generation study based on operating parameters of the linear engine using a power pack
Hung, N.B.
;
Lim, O.T.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Enhanced heat transfer in oscillatory flows within multiple-hole baffled tubes
Gonzalez-Juarez, Daniel
;
Martínez, David S.
;
Herrero-Martín, Ruth
;
Solano, Juan P.
(
HEFAT
,
2016
)
Numerical study on CO2 absorption efficiency by using aqueous monoethanolamine solution in CO2 absorber column
Shim, Sung-Min
;
Lee, Sang-Jin
;
Lee, Jung-Gil
;
Kim, Woo-Seung
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2011
)
Entropy analysis in MHD CNTS flow due to a stretching surface with thermal radiation and heat source/sink
Sneha, K.N.
;
Mahabaleshwar, U.S.
;
Sharifpur, Mohsen
;
Ahmadi, Mohammad Hossein
;
Al-Bahrani, Mohammed
(
MDPI
,
2022-09-19
)
Influence of wheel and rail profile shape on the initiation of rolling contact fatigue cracks at high axle loads
Spangenberg, Ulrich
;
Fröhling, Robert Desmond
;
Els, Pieter Schalk
(
Routledge
,
2016-03
)
Towards low-cost microchannel heat exchangers: vehicle heat recovery ventilator prototype
Denkenberger, D.
;
Parisi, M.
;
Pearce, J.M.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2014
)
Study of winglets vortex generators in a circular tube for thermal enhancement
Xu, Yunbo
;
Islam, M.D.
(
HEFAT
,
2016
)
Thermodynamic optimisation of the integrated design of a small‐scale solar thermal Brayton cycle
Le Roux, Willem Gabriel
;
Bello-Ochende, Tunde
;
Meyer, Josua P.
(
Wiley-Blackwell
,
2012-09
)
A numerical study and design of multiple jet impingement in a PEMFC
Lum, K.W.
;
Birgersson, E.
;
Ly, H.
;
Poh, H.J.
;
Mujumdar, A.S.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Self-aerated bounded flows in special hydraulic structures. Part 1. A short review on design concepts and sizing procedures of aerators
Mutti, M.
(
International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics
,
2008
)
Now showing items 101-200 of 2800
Previous Page
1
2
3
4
5
. . .
28
Next Page
Sort Options:
Relevance
Title Asc
Title Desc
Issue Date Asc
Issue Date Desc
Results Per Page:
5
10
20
40
60
80
100
Browse
All of UPSpace
Communities & Collections
Issue Date
Authors
Titles
Subjects
Supervisor
UP Author
UP Postgraduate
Type
This Community
Issue Date
Authors
Titles
Subjects
Supervisor
UP Author
UP Postgraduate
Type
My Account
Login
Register
UPSpace Workspace
Discover
Author
Meyer, Josua P. (244)
Sharifpur, Mohsen (145)
Heyns, P.S. (Philippus Stephanus) (98)
De Paepe, M. (63)
Els, Pieter Schalk (50)
Dirker, Jaco (39)
Kok, Schalk (38)
Bello-Ochende, Tunde (37)
Hoseinzadeh, Siamak (29)
Wilke, Daniel Nicolas (27)
... View More
Subject
UCTD (359)
Heat transfer (230)
Computational fluid dynamics (66)
Natural convection (63)
Computational fluid dynamics (CFD) (56)
Pressure drop (55)
Reynolds number (46)
Thermodynamics (46)
CFD (41)
Nanofluid (41)
... View More
Date Issued
2020 - 2024 (278)
2010 - 2019 (2137)
2000 - 2009 (362)
1990 - 1999 (6)
1970 - 1979 (1)
1965 - 1969 (1)
Has File(s)
true (2786)