Search results for "451"

Die Embryologie im Spannungsfeld zwischen Tradition und Empirie.

1991

Already in classical antiquity people dealt with the principle of formation, developing different theories. Researchers in the renaissance, working in the conflict zone between tradition and experience, tried to prove one or the other of these theories by the means of new observations, especially of chicken development. Aldrovandi was the first to see the real principle of formation of the hen's egg, i. e. the blastodisc, but he didn't recognize the importance of his discovery due to his close adherence to Aristotle in the theoretical field. Fabricius even thought that traditional knowledge was of more importance than his own excellent observations. Parisano was the first to succeed in maki…

The Vesalian movement in sixteenth-century Spain.

1979

In the middle of the sixteenth-century under the direct influence of Vesalius's works there arose in Spain a movement devoted to the renewal of anatomical knowledge. It was one of the initial forces in the spread of the Vesalian reform, but in spite of that it has been almost completely ignored by specialized historical research.' The purpose of this article is to provide a general study of the movement with special emphasis on the conditions which determined its development. In the first place I should make it clear that the renewal in question did not arise from the relationship that Vesalius maintained throughout

Elogio de la Reina Católica Doña Isabel : leído en la junta pública que celebró la Real Academia de la Historia el día 31 de julio de 1807

Amb gravat de la Reina Catòlica Doña Isabel, per Blas Ametller Sign.: A-G4

Interaspecific chemical variability and highlighting of chemotypes of leaf essential oils from Ravensara aromatica Sonnerat, a tree endemic to Madaga…

2006

Ravensara aromatica Sonnerat is a tree endemic to Madagascar. The essential oil extracted from the leaves is used in aromatherapy. Previous chemical studies have generated some confusion with regard to the chemical composition of this essential oil. In order to eliminate this uncertainty, we undertook a systematic evaluation of the chemical composition of essential oils from leaves of this species. The study focused on 28 individual samples formally identified as R. aromatica. The essential oils were obtained by hydrodistillation and analysed by GC and GC–MS. It was possible to distinguish four groups of trees through principal components analysis and agglomerative hierarchical clustering a…

Reja Bredberija romāna “451 grāds pēc Fārenheita” personāžu vizuālo tēlu izstrāde

2015

Pēdējos gados ir strauji pieaugušas tehnoloģiskās iespējas, veidojot visdažādākos koncepta dizainus. Tādu jaunu programmu pieejamība kā, piemēram, Photoshop, sniedz jebkuram interesentam iespējas realizēt pat visfantastiskākās savas idejas ātri, efektīgi un foto-reālistiski. Darba mērķis ir noskaidrot zinātniskās fantastikas savienojamības iespējas koncepta dizainā. Teorētiskajā daļā apskatīta literatūra par zinātnisko fantastiku, Reja Bredberija daiļrade, kā arī Reja Bredberija 1953.gadā izdotais romāns “451 grāds pēc Fārenheita”, koncepta dizaina principi, process un metodes. Pētnieciskajā daļā kā darba izpētes objekts tika analizētas koncepta dizaina grāmatas, kas balstītas uz zinātnisko…

miR-20b and miR-451a Are Involved in Gastric Carcinogenesis through the PI3K/AKT/mTOR Signaling Pathway: Data from Gastric Cancer Patients, Cell Line…

2020

Gastric cancer (GC) is one of the most common and lethal gastrointestinal malignancies worldwide. Many studies have shown that development of GC and other malignancies is mainly driven by alterations of cellular signaling pathways. MicroRNAs (miRNAs) are small noncoding molecules that function as tumor-suppressors or oncogenes, playing an essential role in a variety of fundamental biological processes. In order to understand the functional relevance of miRNA dysregulation, studies analyzing their target genes are of major importance. Here, we chose to analyze two miRNAs, miR-20b and miR-451a, shown to be deregulated in many different malignancies, including GC. Deregulated expression of miR…

El pintor Ignacio Pinazo Camarlench en su centenario. Introducción

2016

The Pomar Codex (ca, 1590): plants and animals of the old world and from the Hernandez expedition to America.

1992

Abstract<title> RIASSUNTO </title>Si descrive un codice illustrato (ca. 1590), donato dal re Filippo II a Honorato Pomar, professore di medicina botanica all'Università di Valencia, e ora conservato nella biblioteca della stessa universita. Tale codice contiene 218 acquarelli di piante e animali del Vecchio Continente e provenienti dalla spedizione nelle Americhe di Hernandez (1571-1577). Inoltre, l'articolo si sofferma brevemente sull'interesse di Filippo II per la storia naturale, sulla spedizione di Hernandez e sulla cattedra di botanica medica all'universita di Valencia nel corso del sedicesimo secolo. Infine, si discute dell'identita dell'autore delle illustrazioni e dei te…

A prototypal architecture of a IEEE 21451 network for smart grid applications based on power line communications

2015

This paper deals with the development of reliable measurement and communication devices and systems and their integration on a prototypal network architecture for smart grid applications, based on the use of narrowband power line communications (PLCs). The proposed solution is presented and discussed in the framework of the ISO/IEC/IEEE 21451 family of Standards. Currently, PLCs are not properly addressed by the aforesaid Standards; on the other hand, by including such issue, their guidelines could represent a common platform for the integration and interoperability of the proposed systems and devices. This would allow to exploit the benefits of the IEEE 21451 approach also for PLC-based sm…

IGR J17451-3022: a dipping and eclipsing low mass X-ray binary

2016

In this paper, we report on the available X-ray data collected by INTEGRAL, Swift, and XMM-Newton during the first outburst of the INTEGRAL transient IGR J17451-3022, discovered in 2014 August. The monitoring observations provided by the JEM-X instruments on-board INTEGRAL and the Swift/XRT showed that the event lasted for about 9 months and that the emission of the source remained soft for the entire period. The source emission is dominated by a thermal component (kT~1.2 keV), most likely produced by an accretion disk. The XMM-Newton observation carried out during the outburst revealed the presence of multiple absorption features in the soft X-ray emission that could be associated to the p…