53,583 research outputs found
Storie di testi e tradizione classica per Luciano Canfora
No full textThe book includes fifteen papers on Greek and Latin philology, the history af ancient texts, the classical tradition and the history of classical scholarship. They have been collected by the editors on the occasion of the 75th birthday of Luciano Canfora. The authors of the papers are: N. Bianchi, P. Butti de Lima, G. Carlucci, A. Corcella, V. Cuomo, I. Eramo, M. Losacco, V. Maraglino, S. Micunco, M.S. Montecalvo, R. Otranto, C. Petrocelli, P.M. Pinto, C. Schiano. G. Solaro. A "Bibliography of Luciano Canfora from 1963 to 2017", edited by S. Micunco e S. Brillante, follows in the second part of the volume.Il volume presenta, nella prima parte, quindici scritti raccolti dai curatori in occasione del settantacinquesimo compleanno di Luciano Canfora. I saggi riguardano la filologia greca e latina, la storia dei testi antichi, la ricezione dell’antichità classica e la storia degli studi. Ne sono autori: N. Bianchi, P. Butti de Lima, G. Carlucci, A. Corcella, V. Cuomo, I. Eramo, M. Losacco, V. Maraglino, S. Micunco, M.S. Montecalvo, R. Otranto, C. Petrocelli, P.M. Pinto, C. Schiano. G. Solaro. La seconda parte contiene la "Bibliografia di Luciano Canfora dal 1963 al 2017", pubblicata a cura di S. Micunco e S. Brillante
The digestive chemistry of pinto bean iron : in vitro and cannulated swine models
No full textTypescript (photocopy).The solubility, oxidation, reduction, adsorption, and reactivity of iron are known to influence its bioavailability. The purpose of this study is to investigate the above factors in digestive mixtures using spectrophotometry and electron paramagnetic resonance (EPR) spectroscopy methods. Pinto beans were chosen as a food model since they have high iron content and the bioavailability of bean iron is sensitive to the addition of beverages and chemical additives. Pinto beans were digested in vitro and in swine fitted with gastric and duodenal cannulae. In addition to the soluble steady state Fe�����, which immediately reacts with ferrozine, the estimation of Fe����� reduction in 10 minutes was found to be useful in examining the effect of beverages and additives on potential iron bioavailability. The low bioavailability of pinto bean iron is probably due to the presence of components which oxidize not only the iron naturally present but also exogenously added iron. When the chemistry of iron was compared in in vitro and in vivo digestive mixtures, the soluble iron estimations differed somewhat, yet, the redox distribution was quite similar with the additives used. Since results for in vitro and in vivo digestions were comparable, the Fe����� and Fe����� concentrations estimated at the end of in vitro digestion were used to predict the bioavailability of iron. Based on human absorption literature, absorption of 40% for Fe����� and 13% for Fe����� was assumed in estimating iron absorption from in vitro studies. The predicted order of pinto bean iron absorption with the additives is as follows: ascorbic + citric acids > orange juice > ascorbic acid > citric acid > control > tea. The reactivity of iron was further investigated using apotransferrin as a probe. EPR was used to quantitate the iron exchange and was found to be useful, especially when heterogeneous mixtures were used. Based on the reactivity of iron with apotransferrin, the enhancing effects of ascorbic acid and the inhibitory effects of phosvitin and tea were demonstrated. The parallel studies with swine and correlation with human absorption studies strongly support the continued use of in vitro methods in predicting the bioavailability of iron from food mixtures
Texas cattle brands for Palo-Pinto County
No full textRecord of cattle brands listing the owner, the name of the ranch, the date of the brand and a pictorial image of said brand
An efficient approach to noise analysis through multidimensional physics-based models
No full textIEEE TRANS. EL. DEV
Does the amplitude of biceps brachii M waves increase similarly in both limbs during staircase, electrically elicited contractions?
No full textObjective: Humans usually tend to control more finely muscle force production in dominant than non-dominant upper limbs. It is well established that motor unit recruitment is a key mechanism by which muscle force is controlled, and we hypothesized that a relatively smaller number of motor units may be recruited in muscles of dominant than non-dominant limbs for any given increase in synaptic input. Hence, we investigated peripheral properties of dominant and non-dominant biceps brachii through the analysis of M-wave responses to incremental electrical stimulation. Approach: Current pulses at progressively greater intensities were applied in the proximal region of biceps brachii of 16 subjects while surface electromyograms were recorded with a grid of electrodes in the distal region. M-wave amplitude was averaged across channels and normalized with respect to the maximum amplitude value, separately for each stimulation intensity and limb. Amplitude-current intensity curves were interpolated to provide an equal number of stimulation levels between limbs. Differences between dominant and non-dominant arms were assessed through the average increase in M-wave amplitude for consecutive stimulation intensities (increments). Main results: Wilcoxon's signed-rank test showed that increments in the M-wave amplitude were significantly smaller (p = 0.017) in dominant than non-dominant biceps brachii. Significance: The results suggest that there was a more gradual recruitment of motor units in biceps brachii of dominant than non-dominant arms. This is in agreement with the hypothesis of a broader spectrum of motor unit recruitment thresholds in the dominant arm, which may contribute to a finer regulation of force production
Temporal genetic structure of feral honey bees (Hymenoptera: Apidae) in a coastal prairie habitat of southern Texas: impact of Africanization
No full textThe goal of this study was to examine the impact of Africanization on the genetic structure of the Welder Wildlife Refuge feral honey bee population by scoring mtDNA and microsatellite polymorphisms. Adult honey bee workers, collected between 1991 and 2001, were screened for mtDNA using the cytochrome b/BglII, ls rRNA/EcoRI, and COI/HinfI PCR-based assays. The procedure allowed identification of four mitotypes: eastern European, western European, A. m. lamarckii, and A. m. scutellata. The relative frequencies of the four mitotypes changed radically during the 11-year period. Prior to immigration of Africanized honey bees, the resident population was essentially of eastern European maternal ancestry. The first colony of A. m. scutellata mitotype was detected in 1993. Between 1995 and 1996 there was a mitotype turnover in the population from predominantly eastern European to predominantly A. m. scutellata. From 1997 onward, most colonies (69 %) were of A. m. scutellata mitotype.
The temporal change in mtDNA was paralleled by nuclear DNA. The 12 microsatellite loci analyzed indicated (1) the mechanism of Africanization of the Welder population involved both maternal and paternal bi-directional gene flow (hybridization) between European and Africanized honey bees; and (2) the resident panmitic European population was replaced by panmitic asymmetrical admixtures of A. m. scutellata and European genes. The steepest increase in the proportion of introgressed A. m. scutellata nuclear alleles occurred between 1994 and 1997. The post-Africanization gene pool was composed of a diverse array of recombinant classes with a substantial European genetic contribution (mean proportion of European-derived alleles was 37 % as given by mR estimator or 25 % as given by mY estimator, for 1998-2001). If European genes continue to be retained at moderate frequencies, then the Africanized population is best viewed as a "hybrid swarm" instead of "pure African".
The most radical change in the genetic structure of the Welder Wildlife Refuge feral honey bee population (observed between 1995 and 1997) coincided with arrival of the parasitic Varroa mite. We suggest that Varroa likely hastened the demise of European honey bees and had a major role in restructuring the Welder Wildlife Refuge feral honey bee population
Behavioural compensation by drivers of a simulator when using a vision enhancement system
No full textTechnological progress is suggesting dramatic changes to the tasks of the driver, with the general aim of making driving environment safer. Before any of these technologies are implemented, empirical research is required to establish if these devices do, in fact, bring about the anticipated improvements. Initially, at least, simulated driving environments offer a means of conducting this research. The study reported here concentrates on the application of a vision enhancement (VE) system within the risk homeostasis paradigm. It was anticipated, in line with risk homeostasis theory, that drivers would compensate for the reduction in risk by increasing speed. The results support the hypothesis although, after a simulated failure of the VE system, drivers did reduce their speed due to reduced confidence in the reliability of the system
Correspondencia de Carlos Martínez, José Pinto y Marceliano Vélez
No full textDocumento en el que se publica la correspondencia de Carlos Martínez, José Pinto y Marceliano Vélez a finales del año 1899, en la que se tocan temas de la causa conservadora.
El documento conserva la ortografía de la época
Evaluation of Potato and Pinto bean Intercropping
No full textTo evaluate beneficial effect of intercropping based on replacement and additive methods to sustainable agriculture, two experiments were conducted at the Agricultural Research Station of University of Tabriz in 2005 and 2006, to study the effect of intercropping potato and pinto bean by using these two methods. The experiments carried out using randomized complete block design with three replications and 16 treatments. The treatments, consisted of: eight treatments of replacement intercropping with 2:1 and 3:1 proportions of potato and pinto bean (with densities of 4.7 and 5.3 plants m-2 for potato and 45 and 55 plants m-2 for pinto bean), four treatments of additive intercropping (with densities of 4.7 and 5.3 plants m-2 for potato and 5.3 and 10.6 plants m-2 for pinto bean), two sole croppings of potato (4.7 and 5.3 plants m-2) and two sole croppings of pinto bean (45 and 55 plants m-2). Maximum tuber yield per plant, tuber yield of potato per unit area, tuber size, mean tuber weight, number of leaves and branches per plant were obtained from replacement intercropping treatments. Maximum grain yield of pinto bean per unit area was obtained from the replacement intercropping treatments; Maximum grain yield per plant, number of pods per plant, number of leaves and branches, plant height, dates of emergence, flowering, poding and ripening were obtained from the additive intercropping treatments. To evaluate the beneficial effect of intercropping, land equivalent ratio (LER) was more than one, and the maximum amounts for two years (1.25 and 1.27, respectively) belonged to replacement intercropping of 1:2 treatment (66% potato with 5.3 plants per m2 + 34%pinto bean with 55 plants per m2). This treatment, therefore, can be recommended to be the best intercropping pattern for sustainable agriculture
Synthesis and evaluation of influenza A viral neuraminidase candidate inhibitors based on a bicyclo[3.1.0]hexane scaffold
No full textThis manuscript describes a novel class of derivatives based on a bicyclo[3.1.0]hexane scaffold, proposed as mimics of sialic acid in a distorted boat conformation that is on the catalytic pathway of neuraminidases (sialidases). A general synthetic route for these constrained-ring molecules was developed using a photochemical reaction followed by a Johnson-Corey-Chaykovsky cyclopropanation. Functionalization with the goal of occupying the 150-cavity was also exploited. Inhibition assays demonstrated low micromolar inhibition against both group-1 (H5N1) and group-2 (H9N2) influenza neuraminidase subtypes, indicating good affinity for the alpha and beta sialic acid mimics and 150-cavity-targeted derivatives. These results provide a validation of a bicyclo[3.1.0]hexane scaffold as a mimic of a distorted sialic acid bound in the neuraminidase active site during catalysis
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