196,243 research outputs found
Alimentazione in età evolutiva e nutrizione clinica
No full textIl capitolo 6 del libro illustra i nutrienti essenziali e le fonti dietetiche di ciascuno di essi; descrive le funzioni fisiologiche della digestione, assorbimento, metabolismo dei carboidrati, grassi e proteine; descrive i principi nutrizionali nelle diverse fasi dello sviluppo e le indicazioni della piramide nutrizionale italiana; descrive gli stati di alterata nutrizione e illustra i principali fattori che influiscono sulla nutrizione del bambin
Time-Resolved in Situ Small-Angle X-ray Scattering Study of Silica Particle Formation in Nonionic Water-in-Oil Microemulsions
No full textThe formation of silica particles by the ammonia-catalyzed hydrolysis of tetraethyl orthosilicate (TEOS) in the polyoxyethylene (5) nonylphenyl ether (NP-5)/cyclohexane/water microemulsion system was investigated by time-resolved small-angle X-ray scattering (SAXS). The SAXS data could be modeled as a combination of two species where one describes the silica-particle containing microemulsion droplets and the other the reverse droplets. The analysis allowed the determination of the evolution of the system of particles of silica and reverse droplets. A model of nucleation and growth of the silica particles is confirmed and the volume fraction versus time data for the silica particles is in agreement with first order kinetics with respect to TEOS concentration. Moreover to describe the long time evolution of the system, a correlation among the silica particles has been taken into account by introducing a structure factor with a local silica volume fraction η = 0.1. This high local density is 2 orders of magnitude larger than the global silica fraction and can be explained in terms of depleting interaction
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Demografia i conservació de Simethis mattiazzi (Liliaceae), espècie d’interès per a la flora vascular de Catalunya
No full textWe provide new chorological, demographic, phenological, phytosociological, ecological and environmental management data of Simethis mattiazzi in Catalonia, a threatened vascular plant in the Mediterranean region. We have located 27 stands in the region of la Selva which counting give us an estimation of 176,052 individuals (22 stands). The area of occupancy is 43,594 m2 which are distributed in 10 UTM squares of 1 km per side. Simethis is a characteristic species of Lavandulo stoechadis-Ericetum scopariae association and can be found in three different habitats (32k Erica scoparia heaths, 45b Quercus suber forests with undergrowth of acidophilous scrub and 45i Mixed forest of Q. suber and Pinus spp.), clearly preferring the 32k. However, it produces more flowers per individual in environments that are less favourable (45b and 45i). By all appearances, the predominant distribution factor in Europe and Africa is climate, which always has to be Atlantic or Submediterranean with oceanic trend. Likewise, we give conservation proposals and confirm the current IUCN status “endangered” (EN) of Simethis in Catalonia.Aportamos nuevos datos corológicos, demográficos, fenológicos, fitosociológicos, ecológicos y de gestión ambiental sobre Simethis mattiazzi en Cataluña, una planta vascular amenazada en la región mediterránea. En la comarca de la Selva hemos localizado 27 rodales, cuyos recuentos nos dan una estimación de 176.052 individuos (22 rodales). El área de ocupación es de 43.594 m2 y se distribuyen en 10 cuadrados UTM de 1 km de lado. Simethis es una especie característica de la asociación Lavandulo stoechadis-Ericetum scopariae y se puede encontrar presente en tres hábitats diferentes (32k Brezales de Erica scoparia, 45b Bosques de Quercus suber con sotobosque de matorral acidófilo y 45i Bosques mixtos de Q. suber y Pinus spp.), prefiriendo claramente el 32k. Aun así, produce más flores por individuo en los ambientes que le son menos favorables (45b y 45i). Por lo que parece, el factor predominante de su distribución en Europa y África es el clima, el cual siempre tiene que ser atlántico o submediterráneo con tendencia oceánica. Asimismo, damos propuestas para su conservación y confirmamos el estatus actual UICN de «En Peligro» (EN) de Simethis en Cataluña.
[ca] Aportem noves dades corològiques, demogràfiques, fenològiques, fitosociològiques, ecològiques i de gestió ambiental sobre Simethis mattiazzi a Catalunya, una planta vascular amenaçada a la regió mediterrània. A la comarca de la Selva hem localitzat 27 rodals, els recomptes dels quals ens donen una estimació de 176.052 individus (22 rodals). L’àrea d’ocupació és de 43.594 m2 i es distribueix en 10 quadrats UTM d’1 km de costat. Simethis és una espècie característica de l’associació Lavandulo stoechadis-Ericetum scopariae i es pot trobar present en tres hàbitats distints (32k Bruguerars d’Erica scoparia, 45b Boscos de Quercus suber amb sotabosc de brolla acidòfila i 45i Boscos mixtos de Q. suber i Pinus spp.), tenint una clara preferència pel 32k. Malgrat això, produeix més flors per individu en els ambients que li resulten menys favorables (45b i 45i). D’altra banda, pel que sembla, el factor predominant de la seva distribució a Europa i Àfrica és el clima, el qual sempre ha de ser atlàntic o submediterrani de tendència oceànica. Així mateix, donem propostes de conservació i confirmem l’estatus actual UICN de «En Perill» (EN) de Simethis a Catalunya
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Oxaliplatin induces a rise of topoisomerases in PBMC of 53 cancer patients
No full textleading to DNA adduct formation subsequently causing irreversible DNA replication error and apoptosis. Topoisomerase I and II (TPs) are critical enzymes for DNA function and cell survival. They control maintaining and modifying DNA topology
during both replication and translation of genetic material, and restore DNA toxicity exerted by Platins. TPs-inhibitors drugs are largely used in chemotherapy, however, most often blindly of both the cancer tissue and the PBMC TPs status.
Aim of the study: To evaluate the PBMC-TPs behaviour after OXP, and OXP followed by CPT11 administration.
Patients and methods: Patients were 53 (23 F, 30 M; 37 to 80 years old, median age 65 years) with colon-rectal (29), lung (7), ovary and gastric (4 each), miscellaneous (9). TPI, IIa and IIb measurement was made by quantitative real-times RT-PCR. Test was made basally and after 1, 2, 3, 4, 5 hours after OXP (1 hr iv infusion) and also when OXP was followed by the administration of TPs inhibitor drug Irinotecan (CPT11; 1 hr-iv infusion).
Results: After the OXP administration of a fast rise of TP I, IIa and IIb mRNA expression occurs (increment median percentage: 502%, 59,1% and 361%, respectively; p> 0.0001). 14 day after in the same patient, the CPT11 (sequentially given after OXP) markedly reduced the previously observed TPs rising (p> 0.0001).
Conclusions: The timing of the TPs increase caused by OXP is rapid and it is cancelled by CPT11. Present results may help in constructing a combination chemotherapy regimen. The study is ongoing to enrol further patients.
Present work is a part of the study program, and partly supports by AOI (Associazione Oncologica Italiana), and by Regione Veneto (N. 204/2004)
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Decomposition of Feynman integrals by multivariate intersection numbers
No full textWe present a detailed description of the recent idea for a direct decomposition of Feynman integrals onto a basis of master integrals by projections, as well as a direct derivation of the differential equations satisfied by the master integrals, employing multivariate intersection numbers. We discuss a recursive algorithm for the computation of multivariate intersection numbers, and provide three different approaches for a direct decomposition of Feynman integrals, which we dub the straight decomposition, the bottom-up decomposition, and the top-down decomposition. These algorithms exploit the unitarity structure of Feynman integrals by computing intersection numbers supported on cuts, in various orders, thus showing the synthesis of the intersection-theory concepts with unitarity-based methods and integrand decomposition. We perform explicit computations to exemplify all of these approaches applied to Feynman integrals, paving a way towards potential applications to generic multi-loop integrals
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