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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
211

Experimental study on concrete filled square hollow sections

Lam, Dennis, Williams, C.A. January 2004 (has links)
A series of tests was performed to consider the behaviour of short composite columns under axial compressive loading, covering a range of S275 and S355 grade steel square hollow section filled with normal and high strength concrete. The interaction between the steel and the concrete component is considered and the results show that concrete shrinkage has an effect on the axial strength of the column. Comparisons between Eurocode 4, ACI-318 and the Australian Standards with the findings of this research were made. Result showed the equation used by the ACI-318 and the proposed Australian Standards gave better predication for the axial capacity of concrete filled SHS columns than the Eurocode 4.
212

A compact broadband Circularly Polarized wide-slot antenna with axial ratio bandwidth encompassing LTE 42 and LTE 43 standards of 5G mid-band

Alnahwi, F.M., Al-Yasir, Yasir I.A., Ali, N.T., Gharbia, Ibrahim, Abdullah, A.S., Hu, Yim Fun, Abd-Alhameed, Raed 08 January 2023 (has links)
Yes / This study presents a compact broadband wide-slot antenna with broadband left-hand circular polarization compatible with both LTE 42 and LTE 43 standards of 5G mid-band applications. The proposed antenna is fabricated on an FR4 dielectric substrate with overall dimensions of , where is the free space wavelength at the resonant frequency of the antenna. The antenna ground plane is etched to form a square radiating slot with a pair of rectangular ground stubs that are diagonally placed inside the slot. On the other side of the antenna, the feed line is loaded by horizontal and vertical stubs to improve the coupling between the feed line and the square slot. To generate a circular polarization, the feeding stubs cooperate with the pair of rectangular ground stubs to excite the radiating slot of the antenna at two different feeding points whose currents have approximately equal amplitude and 90o phase shift. The measured impedance bandwidth (BW) of the proposed wide-slot antenna is 16.2% (580 MHz along the band 3.3-3.88 GHz), while the observed axial ratio bandwidth (ARBW) is 12.2% (440 MHz in the 3.4-3.84 GHz band). The measured gain values are found to be larger than 2.5 dB along both standards of the 5G mid-band applications. / This work was supported in part by the U.K. Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/E022936/1, and in part by the European Union’s Horizon 2020 Research and Innovation Programme under Grant H2020-MSCA-ITN-2016 SECRET-722424.
213

Axial capacity of concrete filled stainless steel tubular circular columns

Lam, Dennis, Roach, C. January 2006 (has links)
No
214

Axial capacity of concrete filled stainless steel circular columns

Lam, Dennis, Roach, C. January 2006 (has links)
No description available.
215

Vårdprocessen vid ankyloserande spondylit : En enkätstudie ur patientens perspektiv / The quality of care for people diagnosed with ankylosing spondylarthritis : A questionnaire-based survey seen from the patient's point of view

Söderlund, Sara, Askebrand, Thea January 2023 (has links)
Introduktion: Ankyloserande spondylit är en typ av kronisk inflammatorisk ledsjukdom. Förutom Ankyloserande spondylit benämns den även Bechterews eller Axial spondylartrit. De initierande symtomen är molvärk i ländrygg och bäckenleder vilket gör det svårt att skiljafrån andra tillstånd. Detta leder till en fördröjning på 6-9 år för att bli diagnostiserad. Fysioterapeuten har en viktig roll då träning i form av styrka, kondition och rörlighet är enstandardiserad intervention som behöver individanpassas och kan kompletteras med andrainterventioner. Behandlingens mål är att bromsa sjukdomsförloppet och minskafunktionsnedsättningarna. Syftet med studien var att belysa patienternas perspektiv påvårdprocessen vid Ankyloserande spondylit samt självskattningen av fysioterapeutiskainterventioner. Metod: En kvantitativ studie med empirisk ansats och retrospektiv design medinslag av kvalitativ innehållsanalys utfördes. En egenkonstruerad enkät delgavs i enFacebookgrupp för personer med diagnosen. Resultat: 181 personer deltog i studien. Flestsökte läkare och fysioterapeuter vid symtomdebut, 69,6% respektive 11,1%. Majoriteten i debåda grupperna fick vänta mer än 3 år på remiss och medianvärdet för diagnostisering var 7-10 år. 27,1% väntade max sex månader med att söka vård vid symtomdebut medan 29,8%väntade mer än 3 år. 84,7% hade fysisk träning som behandling och det var den behandlingsom flest upplevde gav bäst effekt. Av deltagarna var det 60% som skattade lägre än 5/10 påupplevelsen av diagnosticeringsprocessen. Konklusion: Studiens resultat belyser det storamissnöjet hos denna patientgrupp. Det sker en stor fördröjning för att få remiss, diagnos ochrätt behandling, därför uppmanar vi till vidare forskning kring hur vården kan bli effektivare.Studien visar att fysioterapeutiska insatser upplevs ha effekt på smärta, funktion och rörelse.
216

Development of a Methodology to Estimate Aero-Performance and Aero-Operability Limits of a Multistage Axial Flow Compressor for Use in Preliminary Design

Kulkarni, Sameer January 1900 (has links)
No description available.
217

EVALUATION OF MASS TRANSFER RATE IN COLUMN OF SMALL LiLSX PARTICLES

Patel, Mihirkumar S. 15 May 2017 (has links)
No description available.
218

Aerodynamics and Combustion of Axial Swirlers

FU, YONGQIANG 18 April 2008 (has links)
No description available.
219

Application of optimal control in a vibrating rod and membrane

Jou, Yung-Tsan January 1995 (has links)
No description available.
220

Observed Flow Characteristics of Rotating Stall Inception and its Prevention Using Discrete Tip Injection in the NASA Stage 35 Axial Compressor with New Analysis Methods

Johnson, Benjamin P. 05 September 2008 (has links)
No description available.

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