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| Registros recuperados: 9.178 | |
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| HAMAME,CARLOS M; DELANO,PAÚL H; ROBLES,LUIS. |
| Twelve rats were trained to perform a two-choice visual detection task in which a right or left light was presented and the animáis were required to press the lever located under the illuminated light for a food reward. In seventy percent of the triáis the target light was preceded by presentation of a neutral cue (a central light). Relevance of the neutral cue for detection of the target was analyzed by comparing behavioral Índices of attention in its presence and absence. Accuracy was significantly higher in presence than in absence of the neutral cue, while mean response latencies were lower in presence than in absence of the neutral cue. These results indicate that the animáis allocated attentional resources on the target detection during a high... |
| Tipo: Journal article |
Palavras-chave: Alerting effect; Attention; Detection task; Expectancy; Neutral cue; Rat. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602008000400012 |
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| Yavuz,Izzet; Aydin,Haluk; Ulku,Refik; Kaya,Sadullah; Tumen,Caner. |
| This study investigates the feasibility of a different new approach to determining the microleakage volume associated with dental restorations (Class V cavity restorated with glass ionomer cement + high copper amalgam) and the relative marginal adaptation deficiency of dog, bovine and human permanent teeth in in vitro conditions. Also researched is the appropriateness of using dog and bovine teeth in in vitro studies rather than human teeth. Our method utilizes the molecular adsorption characteristics of methylene blue. Within the framework of this study, 60 permanent teeth (20 human, 20 dogs and 20 bovine) were used. These groups were evaluated statistically, of which indicated no statistically significant differences (p > 0.05). It was also concluded... |
| Tipo: Journal article |
Palavras-chave: Dye adsorption test; Microleakage; Tooth. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100003 |
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| Morales-Avalos,Rodolfo; Leyva-Villegas,Jorge I; Sánchez-Mejorada,Gabriela; Méndez-Aguirre,Omar; Galindo-Aguilar,Oscar Ulises; Quiroga-Garza,Alejandro; Villarreal-Silva,Eliud E; Vílchez-Cavazos,Félix; Galván,José R.B; Elizondo-Omaña,Rodrigo E; Guzmán-López,Santos. |
| Femoroacetabular impingement syndrome (FAI) is a clinical entity that has been recognized in recent years as a frequent cause of pain and the early development of hip arthrosis. Subspine hip impingement is characterized by the prominent or abnormal morphology of the anteroinferior iliac spine (AIIS), which contributes to the development of a clinical picture that is similar to FAI. The aims of this study were to propose a new morphological classification of the AIIS, to determine the prevalence of the different AIIS morphologies based on this classification and to correlate the presence of said morphologies with different gender and age groups. The sample consisted of 458 hemipelvises from individuals of known age and sex (264 men and 194 women). Each... |
| Tipo: Journal article |
Palavras-chave: Prevalence; Anterior inferior iliac spine; Subspine impingement; Classification; Morphology; Hip. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000200034 |
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| Alsoleihat,Firas. |
| Few previous studies have demonstrated the likelihood of using the worldwide patterns of dental morphological variation in prediction of ancestry in the context of forensic dental anthropology. This paper introduces a new quantitative method for predicting forensic racial identity of individual specimens based on dental morphological trait analysis. In this study, the inter-population variation in the expression frequency of 16 non-metric tooth crown traits, manifested on the permanent dentition, was used for analysis. The method was developed from the notion that dental morphological characteristics, when viewed as sets of traits rather than isolated variables, can be utilized to calculate the relative probability that an individual belongs to a... |
| Tipo: Journal article |
Palavras-chave: Forensic dental anthropology; Non-metric tooth crown traits; Racial identification. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022013000200009 |
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| RECABARREN,OMAR P; PINO,MARIO; CID,INÉS. |
| Fourteen dental and bone parts of a horse excavated from the Pilauco paleontological site, Osorno (40°39' S-73°07' W) are analysed and interpreted. This site was formed in association with a peat bog located on the banks of the old Damas River and has conserved abundant late Pleistocene mammalian fauna and flora materials. A date of 11457 ± 140 14C yrs B.P. was obtained from a molar and agrees with our stratigraphic age model. We have identified the fossils as pertaining to the species Equus (Amerhippus) andium, which confirms its presence in central-south Chile. Furthermore, the recorded geographic location indicate that the metapodial adaptations of the specimens previously described agree with the reconstructed late Pleistocene landscape of Pilauco,... |
| Tipo: Journal article |
Palavras-chave: Equus; Equus (Amerhippus) andium; Late Pleistocene; Pilauco. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2011000400006 |
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| Aversi-Ferreira,Tales Alexandre. |
| Rules, formulas and statistical tests have been widely used in studies that use continuous variables in the normal or Gaussian distribution or other tests whose data fit this type of distribution (t and z distributions) and whose parameters can be defined. However, there are cases in which the model and goal of the scientific work allow only the use of discrete or nominal variables. The absence or presence of a structure or organ (muscles, nerves, blood vessels, bones, and ligaments), characteristics associated with these organs, such as the source of nerves, vessels and muscles and the distribution of nerves and vessels are discrete and / or nominal variables that do not fit the Gaussian distribution, nor of z or t, unless the measures of these structures... |
| Tipo: Journal article |
Palavras-chave: Morphology; Comparative anatomy; Statistical method. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400016 |
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| Robeson,James; Turra,Gabriel; Huber,Karen; Borie,Consuelo. |
| Background Lytic bacteriophages are bacterial viruses that upon infection kill their host cells and therefore have re-emerged as biological control agents of bacterial pathogens, particularly in the field of food related infections. Here, we investigated the stability in different food matrices of five phage isolates capable of controlling the foodborne pathogen Salmonella enterica serovar Enteritidis (SE). Results We found that two phages, originally isolated from food sources, were up to 5 logs more stable than three phages isolated from sewage, in ten food matrices (fresh and processed) at both 4°C and 18°C. Conclusion Lytic phages isolated from contaminated food sources seem to be a better choice when structuring phage cocktails to be used in the... |
| Tipo: Journal article |
Palavras-chave: Biocontrol; Foodstuffs; Phage. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000400008 |
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| Wei,Lei; Yin,Li; Hu,Xiaole; Xu,Ying; Chen,Fang. |
| Background Jatropha curcas is a rich reservoir of pharmaceutically active terpenoids. More than 25 terpenoids have been isolated from this plant, and their activities are anti-bacterial, anti-fungal, anti-cancer, insecticidal, rodenticidal, cytotoxic and molluscicidal. But not much is known about the pathway involved in the biosynthesis of terpenoids. The present investigation describes the cloning, characterization and subcellular localization of isopentenyl diphosphate isomerase (IPI) gene from J. curcas. IPI is one of the rate limiting enzymes in the biosynthesis of terpenoids, catalyzing the crucial interconversion of isopentenyl diphosphate (IPP) and dimethylallyl diphosphate (DMAPP). Results A full-length JcIPI cDNA consisting of 1355 bp was cloned.... |
| Tipo: Journal article |
Palavras-chave: Heterologous expression; Southern blot; Terpenoids; Transient expression. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582014000600007 |
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| Yang,Shengbo; Hu,Shuangjiang; Tian,Xufeng; Hu,Shuaiyu. |
| The nerve entry points (NEPs) cannot be accurately localized for the treatment of muscle spasticity in neurolysis. The aim of this study was to develop a new method of accurately localizing nerve entry points in relation to bony landmarks. NEPs in human cadavers were coated with barium sulfate. Method 1 consisted of horizontal and longitudinal reference lines being designated based on bony landmarks, followed by radiography and measurements using picture archiving and communication system software. Method 2 involved sewing the barium sulfate-soaked suture thread into the skin to designate the horizontal and longitudinal reference lines, followed by computed tomography (CT) scanning to determine the skin surface location and puncture depth for the NEPs.... |
| Tipo: Journal article |
Palavras-chave: Spasticity; Nerve entry points; Anatomy; X-ray; Localization. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022017000300002 |
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| Ye,Wenling; Wang,Fengling; Lv,Shuangyu; Wang,Yange; Dong,Shuo; Wang,Jianlin. |
| The adrenal gland is an important endocrine organ in vertebratesthat produces a wide variety of hormones. The anatomical results showed that the adrenal gland in Bactrian camel had a typical blood supply and innervation. Surprisingly, we found that there was a novel connection mainly consisted of fibrous tissue, blood vessels and nerve bundles between the adrenal gland and the kidney in Bactrian camel, and we named it fibrous tissue-blood vessels-nerve bundles (FBN bundle). To the best of our knowledge, this FBN bundle was the first reported in Bactrian camel, and not yet observed in other animals. While, its functions and mechanisms should be studied further. We speculated that a direct function of this novel path might be to strengthen the communication... |
| Tipo: Journal article |
Palavras-chave: Anatomical; Adrenal gland; FBN bundle; Blood supply; Bactrian camels. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000400044 |
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| Registros recuperados: 9.178 | |
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