X-ray CT in the detection of palm weevils

Ma, Andy; Alghamdi, Ali; Tofailli, Kassem; Spyrou, Nicholas
February 2012
Journal of Radioanalytical & Nuclear Chemistry;Feb2012, Vol. 291 Issue 2, p353
Academic Journal
Early detection of the red palm weevils (RPW) is a major challenge in agriculture among all kinds of palm trees due to the nature of the insect and the difficulty to trace them through their life stages associated with the tree life. Many methods have been applied for the weevil detection such as X-ray diffraction techniques, fluoroscopy and ultrasound. On the other hand, the idea of tomography has been used for other purposes such as the determination of the age of the tree and for applied environmental studies. Such technology can also reveal the weevil in principle. In this study, we explore the use of X-ray CT for weevil detection with the Monte Carlo method. A model of the stem of a palm tree is developed for simulations. MCNPX is chosen to carry out the simulations for the radiography tally in the code. The tally records the 2D data of the X-ray beams irradiating the tree model. An iterative reconstruction method for cone beam CT is applied to obtain the 3D slices of the tree model. We are exploring the minimum number of projection angles and the detectability of the weevil. We shall also report the sensitivity of weevil detection using X-ray CT with a large set of simulations with different weevil sizes and tree diameters.


Related Articles

  • Monte Carlo simulation of neutron tomography for palm weevil detection. Alghamdi, Ali // Journal of Radioanalytical & Nuclear Chemistry;Feb2012, Vol. 291 Issue 2, p359 

    The use of neutron for Non Destructive Imaging (NDI) techniques has many advantages over other (NDI) methods. Using well-established X-ray imaging techniques can provide easy and direct results with some limitations where the sensitivity for light elements is very low. On the other hand, neutron...

  • Determination of the chemical composition of urinary calculi by noncontrast spiral computerized tomography. Sheir, Khaled Z.; Mansour, Osama; Madbouly, Khaled; Elsobky, Emad; Abdel-Khalek, Mohamed // Urological Research;May2005, Vol. 33 Issue 2, p99 

    Various techniques for noncontrast spiral computerized tomography (NCCT) were utilized for the determination of the Hounsefield unit (HU) values of various types of urinary calculi with the aim of determining the best technique for distinguishing various stones compositions. A total of 130...

  • Synchrotron X-ray Studies of the Keel of the Short-Spined Sea Urchin Lytechinus variegatus: Absorption Microtomography (microCT) and Small Beam Diffraction Mapping. Stock, S. R.; Barss, J.; Dahl, T.; Veis, A.; Almer, J. D.; De Carlo, F. // Calcified Tissue International;May2003, Vol. 72 Issue 5, p555 

    In sea urchin teeth, the keel plays an important structural role, and this paper reports results of microstructural characterization of the keel of Lytechinus variegatus using two noninvasive synchrotron x-ray techniques: x-ray absorption microtomography (microCT) and x-ray diffraction mapping....

  • An X-ray Diffractometer with a Mobile Emitter-Detector System. Asadchikov, V.; Babak, V.; Buzmakov, A.; Dorokhin, Yu.; Glagolev, I.; Zanevskii, Yu.; Zryuev, V.; Krivonosov, Yu.; Mamich, V.; Moseiko, L.; Moseiko, N.; Mchedlishvili, B.; Savel’ev, S.; Senin, R.; Smykov, L.; Tudosi, G.; Fateev, V.; Chernenko, S.; Cheremukhina, G.; Cheremukhin, E. // Instruments & Experimental Techniques;May/Jun2005, Vol. 48 Issue 3, p364 

    An X-ray diffractometer with a mobile emitter-detector system is able to perform various X-ray examinations of a stationary sample. The design for this instrument is described, along with its operating principles and control programs. Owing to its high-precision angular movement sensors and its...

  • Coherent imaging using diffracted X-rays. Hansson, C.; Khor, K.; Cernik, R. // Crystallography Reports;Dec2010, Vol. 55 Issue 7, p1162 

    No abstract available.

  • Influence of the Mg and Al ratio on the restructuring of hydrotalcite. Leont'eva, N.; Cherepanova, S.; Drozdov, V.; Bel'skaya, O.; Tsybulya, S.; Stepanova, L. // Theoretical & Experimental Chemistry;Sep2012, Vol. 48 Issue 4, p278 

    The influence of the Mg : Al ratio on the phase composition and structure of the products of hydrotalcite restructuring was studied by X-ray diffraction. At a high Mg ion content, besides hydrotalcite, Mg(OH) and an interstratified phase consisting of hydrotalcite and Mg(OH) are also present....

  • SOME PROBLEMS OF MOLECULAR DYNAMICS STUDY OF SODIUM PENTADECYLSULFONATE/WATER LYOTROPIC SYSTEM. Arsenyan, L. H. // Electronic Journal of Natural Sciences;Jan2009, Vol. 12 Issue 1, p4 

    We have performed a 50 ns molecular dynamics simulation of a sodium pentadecylsulfonate (SPDS)/water system consisting of 64 SPDS/1200 water molecules. The simulation was done using the NAMD source code with CHARMM27 all-atom force field. The main structural parameters were calculated and...

  • Laser pulse heating of nuclear fuels for simulation of reactor power transients. Viswanadham, C.; Sahoo, K.; Kutty, T.; Khan, K.; Jathar, V.; Anantharaman, S.; Kumar, Arun; Dey, G. // Pramana: Journal of Physics;Dec2010, Vol. 75 Issue 6, p1267 

    It is important to study the behaviour of nuclear fuels under transient heating conditions from the point of view of nuclear safety. To simulate the transient heating conditions occurring in the known reactor accidents like loss of coolant accident (LOCA) and reactivity initiated accident (RIA),...

  • Simulación computacional de la estructura FCC del CrN. RUDEN MUÑOZ1, ALEXANDER; MANUELGONZÁLEZ CARMONA, JUAN; RESTREPO PARRA, ELISABET // Informador Técnico;ene-jun2013, Vol. 77 Issue 1, p11 

    CrN thin films were synthesized via Magnetron Sputtering deposition technique on (111) oriented Silicon substrates. Coatings were analyzed by using X-ray Diffraction (XRD) and Raman spectroscopy, determining the cubic phase for the ceramic compound. Computational simulation of the CrN cubic...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics