129,094 research outputs found
General Correspondence; Gonzalez, Cruz E.; 1889
No full textLetters to John M. Whitaker, 1888 to 1896Letter dated 22 February 1888 at Wellsville, Cache Co., Utah, from Charles Gunnell to John M. Whitaker; Letter dated 30 March 1889 at Chihuahua, Mexico, from C. E. Gonzalez to John M. Whitaker at New York; [Various memos]; Letter dated 21 September 1893 at Logan, Utah, from C. D. Fjeldsto(?) to John M. Whitaker; Letter dated 9 January 1895 at Salt Lake City from Ralph L. Graves to John M. Whitaker; Letter dated 27 May 1896 at Scranton, Pennsylvania, from Amos A. Fuller to John M. Whitaker at Salt Lake City, Uta
El lenguaje familiar como medio de expresión de espacios comunes en Natalia Ginzburg y Carmen Martín Gaite
No full textIl presente studio intende analizzare i numerosi luoghi comuni rilevati nella scrittura di Carmen Martín Gaite e Natalia Ginzburg, due scrittrici appartenenti a due culture caratterizzate per le loro proffonde interrelazioni storiche. In particolare, lo studio si incentrerà sull’analisi del linguaggio famigliare che caratterizza la produzione narrativa di entrambi le scrittrici, dopo aver tracciato una panoramica generale sulle diverse tematiche che accomunano sia la loro opera che la loro personalità
Mining e-mail content for author identification forensics
No full textWe describe an investigation into e-mail content mining for author identification, or authorship attribution, for the purpose of forensic investigation. We focus our discussion on the ability to discriminate between authors for the case of both aggregated e-mail topics as well as across different email topics. An extended set of e-mail document features including structural characteristics and linguistic patterns were derived and, together with a Support Vector Machine learning algorithm, were used for mining the e-mail content. Experiments using a number of e-mail documents generated by different authors on a set of topics gave promising results for both aggregated and multi-topic author categorisation
On the origin of the mitochondrial genetic code: Towards a unified mathematical framework for the management of genetic information
No full textThe origin of the genetic code represents one of the most challenging problems in molecular evolution. The genetic code is an important universal feature of extant organisms and indicates a common ancestry of different forms of life on earth. Known variants of the genetic code can be mainly divided in mitochondrial and nuclear classes. Here we provide a new insight on the origin of the mitochondrial genetic code: we found that its degeneracy distribution can be explained by using a mathematical approach recently developed for the description of the Euplotes nuclear variant of the genetic code. The results point to a primeval mitochondrial genetic code composed of four base codons, which we call tesserae, that, among other features, exhibit outstanding error detection capabilities. The theoretical description suggests also a formulation of a plausible biological theory about the origin of protein coding. Such theory is based on the symmetry properties of hypothetical primeval chemical adaptors between nucleic acids and amino acids (ancient tRNA’s). Our paper provides a unified mathematical framework for different hypotheses on the origin of genetic coding. Also, it contributes to revisit our present view about the evolutionary steps that led to extant genetic codes by giving a new first-principles perspective on the difficult problem of the origin of the genetic code, and consequently, on the origin of life on earth
Novos aspectos da patogenicidade de Magnaporthe grisea.
No full textO principal objetivo deste estudo foi identificar e analisar o papel que o gene PTH1 exerce na formação e maturação do apressório em M. grisea. Isolados de M. grisea mutantes (denominado pth1) para o gene PTH1 são incapazes de perfurar o tecido do hospedeiro para dar início à colonização e assim estabelecer uma interação patógeno-hospedeiro
Paroppia Kun, Martínez & Gonzalez, 2010, n. sp.
No full text<i>Paroppia</i> n. sp. 2 <p> <b>Specimens examined:</b> LLao LLao - under <i>N. dombeyi</i>, leaf litter XI-2006 (10), soil XI-2006 (3). 300 µm. <b>Remarks:</b> With geniculated and fusiform sensillus.</p>Published as part of <i>Kun, Marcelo E., Martínez, Pablo A. & Gonzalez, Alda, 2010, Oribatid mites (Acari: Oribatida) from Austrocedrus chilensis and Nothofagus forests of Northwestern Patagonia (Argentina), pp. 22-42 in Zootaxa 2548</i> on page 35, DOI: <a href="http://zenodo.org/record/196766">10.5281/zenodo.196766</a>
On minimal cones
No full textThis paper contains tow new results about minimal sets in euclidean spaces. The first one is of the Maximum principle type, and proves that if C1⊂C2 are minimal singular cones, then C1= C2 This result completes those proven in16 and 17. The second result proves that in every singular minimal cone , a nonempty minimal set E is strictly contained. If C is the “smallest” singular minimal cone in its dimension, then the boundary of E is analytic
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