Search results for "ToP"
showing 10 items of 17685 documents
Self and others in school bullying and cyberbullying : Fine-tuning a new arts-based method to study sensitive topics
2023
Despite continuous international research and prevention efforts, bullying not only persists globally but also evolves into new forms, such as cyberbullying. In this methodological article, we present a new arts-based research tool, graphic vignettes, that can extend our understanding of peer aggression and other sensitive topics by facilitating participants’ creative reflection over the roles of self and others in different problem-based situations. Each graphic vignette, designed for this study, looks like an incomplete comic strip that participants individually develop further. Flexible and open to interpretation vignettes were used in combination with more restrictive/structured vignett…
CONGENITAL NEUROBLASTOMA: A RARE CASE OF PLURIVISCERAL METASTATIC DISSEMINATION
2021
Neuroblastoma is one of the most common neonatal tumors. It involves children in early infancy and originates from neural crest cells of the adrenal gland medulla or sympathetic glia. We report an unusual case of congenital poorly differentiated neuroblastoma with multiple metastases in the brain and cerebellum. The biophysical profile showed a prominent polyhydramnios at 25.3 weeks of gestation; meantime, the mother was diagnosed with gestational diabetes. The mass was detected during the third ultrasonographic examination at 31.4 weeks of gestation. The fetus lived only one day after birth and the postmortem examinations were performed subsequently. An autopsy was performed both to unders…
Transmisión de señales mecánicas en células indiferenciadas neuroblásticas. Estudios biológicos y preclínicos en modelos in vitro 3D
2023
La biotensegridad es un principio físico de autoequilibrio en el que las fuerzas de tensión y compresión sostienen las estructuras biológicas y permiten la mecanotransducción de señales durante las interacciones célula-célula y célula-entorno. De esta manera, las células y los tejidos responden a las condiciones de su entorno y se adaptan a él. En este sentido, el cáncer muestra sus propios sistemas biotensegrales aberrantes que impulsan la carcinogénesis y la evolución de la enfermedad. La biotensegridad tumoral se define por la intercomunicación entre las poblaciones de células tumorales, los elementos de la matriz extracelular y las estructuras y moléculas del microambiente tumoral. En l…
α decay of the πh11/2 isomer in Ir164
2014
The α -decay branch of the πh 11 / 2 isomer in 164 Ir has been identified using the GREAT spectrometer. The 164 Ir nuclei were produced using the 92 Mo( 78 Kr ,p 5 n ) 164 Ir reaction and separated in flight using the recoil ion transport unit (RITU) gas-filled separator. The measured α -decay energy of 6880 ± 10 keV allowed the excitation of the πh 11 / 2 state in 160 Re to be deduced as 166 ± 14 keV. The half-life of 164 Ir was measured with improved precision to be 70 ± 10 μ sandan α -decay branching ratio of 4 ± 2% was determined. Improved half-life and branching ratio measurements were also obtained for 165 Ir, but no evidence was found for the ground-state decays of either 164 Ir or 1…
Confirmation of the new isotope 178Pb
2016
The extremely neutron-deficient isotope 178Pb has been produced. The GREAT spectrometer at the focal plane position of the gas-filled separator RITU was used to study the α decay of 178Pb and its α-decay chain through α-α correlations. The α decay was measured to have an energy and half-life of Eα= 7610(30) keV and t1/2 = 0.21+0.21 −0.08 ms, respectively. The half-life is consistent with recent theoretical calculations using the Coulomb and proximity potential model. The α-decay reduced width and hindrance factor for 178Pb were deduced and correspond to an unhindered l = 0 transition. In addition, the mass excess of 178Pb and the α-decay Q value were calculated from the experimental results…
Lifetime measurement of the first excited 2+ state in 112Te
2015
The lifetime of the 2+ → 0+ g.s. transition in the neutron-deficicient nucleus 112Te has been measured for the first time using the DPUNS plunger and the recoil distance Doppler shift technique. The deduced value for the reduced transition probability is B(E2 :0+ g.s. → 2+) = 0.46 ± 0.04 e2b2, indicating that there is no unexpected enhancement of the B(E2 :0+ g.s. → 2+) values in Te isotopes below the midshell. The result is compared to and discussed in the framework of large-scale shell-model calculations. peerReviewed
First decay study of the very neutron-rich isotope 93Br
2001
The decay of the mass-separated, very neutron-rich isotope 93 Br has been studied by γ spectroscopy. A level scheme of its daughter 93 Kr has been constructed. Level energies, γ-ray branching ratios, and multipolarities suggest spins and parities which are in accord with a smooth systematics of the N = 57 isotones for Z <~ 4 0 , suggesting the N = 56 subshell closure still to be effective in Kr isotopes. So far, there is no indication of a progressive onset of deformation in neutron-rich Kr isotopes. peerReviewed
Oral Blue Nevus: Case Report
2016
Abstract: Aim of this research is the description of a case of palatal blue nevus and the diagnostic and therapeutic strategies to adopt when this oral lesion occurs. Nevi are benign proliferations of nevus cells either in the epithelium or in the subepithelial stroma. Blue nevus of the oral mucosa is a rare lesion. The oral blue nevi are asymptomatic and have no malignant potential. More importantly blue nevus had to be differentiated from malignant melanoma. Because is difficult to distinguish oral melanocytic nevi from melanoma we believe that any oral lesion in question should be excised and sent for histopathologic evaluation.
Notes on Shore Flies (Diptera: Ephydridae) from Finland and north-western Russia
2015
The recent checklist of the Ephydridae of Finland by Zatwarnicki and Kahanpää (2014) mentioned 13 ephydrid species as new for Finland without further details. This paper presents detailed records for those species and a few other species of interest. Four species are recorded for the first time from Russia. Trimerina indistincta Krivosheina, 2004 is herein considered as a new junior synonym of Trimerina microchaeta Hendel, 1932, syn. nov.
A revision of the Old World species of Leptopsilopa Cresson (Insecta: Diptera: Ephydridae)
2016
Diagnoses and illustrations of three Leptopsilopa species known in the Old World: L. africana Cresson, L. mutabilis Cresson and L. pollinosa (Kertesz) are provided. Three new synonyms are proposed: L. aurata (Canzoneri and Meneghini) and L. tibialis (Canzoneri and Meneghini) = L. africana; Psilopa confeteae Canzoneri and Munari = L. pollinosa. Three other species are removed from Leptopsilopa and combined with Athyroglossa, as A. leonensis (Canzoneri and Rampini), new combination, A. mianii (Canzoneri) new combination and A. rossii (Canzoneri and Raffone), new combination.