Evaluation of latent fingermark color contrast as aging parameter under different environmental conditions: A preliminary study

Author(s):  
Josep De Alcaraz‐Fossoul ◽  
Sara C. Zapico ◽  
Emily R. Dean ◽  
Katherine E. Mueller ◽  
Cathy Johnson ◽  
...  
Psihologija ◽  
2007 ◽  
Vol 40 (1) ◽  
pp. 57-74
Author(s):  
Slobodan Markovic ◽  
Ana Jelic

The main purpose of this study is to specify the basic perceptual dimensions underlying the judgments of the physical features which define the style in paintings (e.g. salient form, colorful surface, oval contours etc.). The other aim of the study is to correlate these dimensions with the subjective (affective) dimensions of the experience of paintings. In the preliminary study a set of 25 pairs of elementary perceptual descriptors were empirically specified, and a set of 25 bipolar scales were made (e.g. uncolored-multicolored). In the experiment 30 subjects judged 24 paintings (paintings were taken from the study of Radonjic and Markovic, 2004) on 25 scales. Factor analysis revealed the four factors: form (scales: precise, neat, salient form etc.), color (color contrast, lightness contrast, vivid colors), space (voluminosity, depth and oval contours) and complexity (multicolored, ornate, detailed). Obtained factors reflected the nature of the phenomenological and neural segregation of form, color, depth processing, and partially of complexity processing (e.g. spatial frequency processing within both the form and color subsystem). The aim of the next step of analysis was to specify the correlations between two groups of judgments: (a) mean judgments of 24 paintings on perceptual factors and (b) mean judgments of the same set of 24 paintings on subjective (affective) experience factors, i.e. regularity, attraction, arousal and relaxation (judgments taken from Radonjic and Markovic, 2005). The following significant correlations were obtained: regularity-form, regularity-space, attraction-form and arousal-complexity (negative correlation). The reasons for the unexpected negative correlation between arousal and complexity should be specified in further studies.


2016 ◽  
Vol 61 (4) ◽  
pp. 947-958 ◽  
Author(s):  
Josep De Alcaraz-Fossoul ◽  
Carme Barrot Feixat ◽  
Jack Tasker ◽  
Luke McGarr ◽  
Karen Stow ◽  
...  

2020 ◽  
Vol 60 ◽  
pp. e20206039
Author(s):  
Pere M. Parés-Casanova ◽  
Pinzón Brando ◽  
Daniel Caviedes ◽  
Arcesio Salamanca-Carreño

The ability of an individual to withstand random perturbations during its development is considered a good indicator of environmental and genetic stress. A common means of assessing developmental stability is through analysis of fluctuating asymmetry (FA) in bilateral traits. Tortoises, with their large, solid plastron, allow for measurement of body geometry. Their bilateral shell scutes are ideal candidates for asymmetries researches. With this issue in mind we assessed, as a preliminary study, levels of plastron scute asymmetry in a sample of 46 red-footed tortoise Chelonoidis carbonaria from Arauca, N Colombia. We found significative fluctuating asymmetry (FA) but no directional asymmetry, the former not increasing with carapace size and thus indicating that tortoise shells do not become increasingly asymmetrical with age, or in other words, signaling that FA is not being influenced by pholidosis (variability of scale cover mosaic according to the development of the scutes). Asymmetry in plastron shape, although not necessarily apparent at first glance, varied, with gender with males exhibiting higher levels of FA than females. Although we can not identify the potential sources of variation responsible for the observed patterns of developmental instability, we consider this detected form of asymmetry due to unfavorable environmental conditions.


Author(s):  
C. JOHNSTONE

This chapter summarizes the results of a preliminary study of the mammal and bird bone assemblages from Dichin, Bulgaria. It briefly describes the species identified and offers some tentative conclusions as to their significance for reconstructing local environmental conditions. It pays particular attention to the domestic mammals and the preliminary results of analyses looking at the differing economic roles of cattle, sheep and pigs in the late Roman to early Byzantine periods. A total of 9,136 mammal and 573 bird bones were recorded from deposits at Dichin, all of which were identified at least to family level and mostly to species. Species of birds that were identified based on the bones are pelicans, cormorants, owls and corvids.


Author(s):  
John H.L. Watson ◽  
John L. Swedo ◽  
R.W. Talley

A preliminary study of human mammary carcinoma on the ultrastructural level is reported for a metastatic, subcutaneous nodule, obtained as a surgical biopsy. The patient's tumor had responded favorably to a series of hormonal therapies, including androgens, estrogens, progestins, and corticoids for recurring nodules over eight years. The pertinent nodule was removed from the region of the gluteal maximus, two weeks following stilbestrol therapy. It was about 1.5 cms in diameter, and was located within the dermis. Pieces from it were fixed immediately in cold fixatives: phosphate buffered osmium tetroxide, glutaraldehyde, and paraformaldehyde. Embedment in each case was in Vestopal W. Contrasting was done with combinations of uranyl acetate and lead hydroxide.


Author(s):  
H.D. Geissinger ◽  
C.K. McDonald-Taylor

A new strain of mice, which had arisen by mutation from a dystrophic mouse colony was designated ‘mdx’, because the genetic defect, which manifests itself in brief periods of muscle destruction followed by episodes of muscle regeneration appears to be X-linked. Further studies of histopathological changes in muscle from ‘mdx’ mice at the light microscopic or electron microscopic levels have been published, but only one preliminary study has been on the tibialis anterior (TA) of ‘mdx’ mice less than four weeks old. Lesions in the ‘mdx’ mice vary between different muscles, and centronucleation of fibers in all muscles studied so far appears to be especially prominent in older mice. Lesions in young ‘mdx’ mice have not been studied extensively, and the results appear to be at variance with one another. The degenerative and regenerative aspects of the lesions in the TA of 23 to 26-day-old ‘mdx’ mice appear to vary quantitatively.


Author(s):  
J P Cassella ◽  
V Salih ◽  
T R Graham

Left ventricular assist systems are being developed for eventual long term or permanent implantation as an alternative to heart transplantation in patients unsuitable for or denied the transplant option. Evaluation of the effects of these devices upon normal physiology is required. A preliminary study was conducted to evaluate the morphology of aortic tissue from calves implanted with a pneumatic Left Ventricular Assist device-LVAD. Two 3 month old heifer calves (calf 1 and calf 2) were electively explanted after 128 days and 47 days respectively. Descending thoracic aortic tissue from both animals was removed immediately post mortem and placed into karnovsky’s fixative. The tissue was subsequently processed for transmission electron microscopy (TEM). Some aortic tissue was fixed in neutral buffered formalin and processed for routine light microscopy.


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