ORCID Profile
0000-0003-0173-7939
Current Organisation
Islamic Azad University
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Publisher: Wiley
Date: 03-12-2020
DOI: 10.1111/DDI.13208
Abstract: Natural history collections constitute an enormous wealth of information of Life on Earth. It is estimated that over 2 billion specimens are preserved at institutions worldwide, of which less than 10% are accessible via bio ersity data aggregators such as GBIF. Moreover, they are a very important resource for eco‐evolutionary research, which greatly depends on knowing the precise location where the specimens were collected in order to characterize the environment in which they lived. Yet, only about 55% of the accessible records are georeferenced and only 31% have coordinate uncertainty information, which is critical for conducting rigorous studies. The awareness of this gap of knowledge which hinders the enormous potential of such data in research led to the organization of a workshop which brought together key players in georeferencing of natural history collections. The discussion and outcomes of this workshop are here presented.
Publisher: Cambridge University Press (CUP)
Date: 09-1998
DOI: 10.1017/S0033291798007120
Abstract: Background. A sentence verification task was developed to investigate semantic memory in schizophrenia. Methods. The test consisted of three types of sentence (true, unlikely and nonsense) and seven different types of content (neutral, persecutory, grandiose, political, religious, relationships and somatic) representing common delusional themes present in schizophrenic patients. Sixty-three schizophrenic patients and 66 matched control subjects were asked to make true/false judgements to 143 sentences. Results. Overall accuracy was similar across the two groups sentences with some emotional themes and sentences of the unlikely type produced the most violations. Significant differences between the two subject groups were found specifically on nonsense sentences with persecutory and religious themes. Patients made significantly more incorrect responses (acceptance) to nonsense sentences that had an emotional content congruent with their delusional beliefs, past or present, and also on unlikely sentences (incorrect rejections) whose content was not congruent with their delusions. Further analysis of response bias in the patients showed, overall, that there were more incorrect rejections (a reflection of the large number of unlikely sentence errors) and more incorrect responses to sentences congruent with patients delusions. Furthermore, analysis of those patients currently experiencing delusions revealed more incorrect responses to sentences congruent with their delusional ideas compared with patients not currently deluded. Conclusions. These findings are indicative of cognitive bias in schizophrenia towards certain emotional themes that may underlie illogical semantic connections and delusions.
Publisher: Penerbit Universiti Kebangsaan Malaysia (UKM Press)
Date: 30-05-2021
DOI: 10.17576/JKUKM-2021-33(2)-08
Abstract: This paper investigates the effect of the diameter and the volume fraction variation of the centre nanoparticles on the heat transfer characteristics of a two-dimensional slot jet. The jet impinges on stationary flat, convex, and concave aluminium plates. A forced convective heat transfer coefficient of water-CuO nanofluid impinges on a smooth plate under a constant heat flux. The finite volume method (FVM) is implemented for nanoparticles with diameters varying from 7 to 60 nanometers, volume fractions changing from 0 to 5%, and the Reynolds numbers ranging from 1800 to 2800. A grid independence study is carried out to find a grid size that predicts the results accurately and further grid refinement changes the results insignificantly. The single-phase model shows a capability to predicts the fluid and heat transfer parameters faster and make it more suitable for numerical simulations compared to the two-phase model. The results indicate a higher heat transfer coefficient of nanofluid in comparison with distilled water. As the Reynolds number and nanoparticle volume concentrations increase, the heat transfer rate increases on the surface whilst smaller nanoparticle diameters increase during the cooling process. The increase in the diameter of nanoparticles enhances the Nusselt number on the plate by up to 10%. The same geometrical details, thermophysical, and boundary conditions have been employed in all calculations for distilled water jet simulations to validate the fluid flow behaviour and heat transfer parameters with available experimental data in the literature.
No related grants have been discovered for Amin Etminan.