129,051 research outputs found
La Cándida y los Infante(s)
No full textilustraciones, diagramas, fotografíasLA CÁNDIDA Y LOS INFANTE(S) es una indagación visual expandida sobre el concepto de la infancia, que parte del uso de imágenes del álbum familiar para luego expandir la memoria a través de la puesta en escena y el uso de la imagen en movimiento. (Texto tomado de la fuente).LA CÁNDIDA Y LOS INFANTE(S) is an expanded visual inquiry about the concept of childhood, it starts with the use of family album images and then spread out the memory through the staging and use of the moving image.Magíster Interdisciplinar en Teatro y Artes VivasArtes vivas, performance y políticaArte
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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
Caliothrips chiapas Mound & Infante, 2017, sp.n.
No full text<i>Caliothrips chiapas</i> sp.n. <p> <i>Female macroptera</i>: Dark brown, tarsi yellow also base and apex of all tibiae; antennae brown with segments III– V yellow on basal half and III–IV with apical neck pale (Fig. 10); fore wings deeply shaded (Fig. 4), with small, sub-basal, oval pale area between veinal setae II and III, a transverse paler band between second vein setae I and III, and a brighter and large pale transverse band sub-apically that is usually longer than the apical dark area; veinal setae dark brown, but one seta pale on median and also sub-apical pale bands; clavus uniformly dark. The extent of the pale bands, and the colour intensity of the basal dark area on the fore wing, vary among the type series.</p> <p>Antennae 8-segmented, III–IV each with an apical neck (Fig. 10) and stout forked sense cone, IV with one simple sense cone dorsally extending to mid-point of V; segment VI with simple dorsal sense cone extending beyond mid-point of VIII. Head typical of genus, reticulations with many internal markings (Fig. 6). Pronotal reticulations longitudinally elongate on anterior median third, but equiangular on posterior third. Metanotum longitudinally reticulate with many internal markings. Fore wing costa with about 17 setae (Fig. 4), setae IV–VI particularly stout; first vein with 5 setae basally (IV–V stout) and one seta near wing apex; second vein with 6 (or 7) setae of which two are pale. Tergites I–II with small area of reticulation medially, but remaining tergites with no sculpture medially; tergite II lateral thirds with narrow transverse striations, on III–V these striations become progressively more reticulate and this varies among individuals (Fig. 9), VI–VII with reticulate sculpture laterally; posterior margin of tergites with broad craspedum that is toothed laterally; X with median split on distal third. Sternites with broad craspedum, II–VII with 3 pairs of marginal setae, pair III usually arising in front of margin.</p> <p> <i>Measurements</i> (holotype female in microns): Body length 1050. Head, length 60; width 135. Pronotum, length 80; width 180. Fore wing length 650. Tergite IX setae length, S1 45; S2 70. Antennal segments III–VIII length 40, 38, 35, 25, 10, 25.</p> <p> <i>Male macroptera</i>: Body smaller, colour similar to female, but fore wing paler at base and median pale area slightly larger and paler. Sculpture on tergal lateral thirds similarly grading on II–VII from linear transverse to reticulate. Tergite IX with 3 pairs of dorsal setae, antero-median pair stout and thorn-like (Fig. 7). Sternites III–VII each with transverse pore plate (Fig. 8).</p> <p> <b>Specimens studied</b>. Holotype female, <b>MEXICO</b>, Chiapas State, Frontera Hidalgo, Canton Texcaltic, 4.iv.2014 (F. Infante) in United States National Museum, Washington.</p> <p>Paratypes: 28 females 18 males taken from same locality and plant as holotype; paratypes deposited in the entomological collection of ECOSUR (Tapachula, Chiapas, Mexico), also in USNM, Washington, The Natural History Museum, London, The Senckenberg Museum, Frankfurt, and the Australian National Insect Collection, Canberra.</p>Published as part of <i>Mound, Laurence & Infante, Francisco, 2017, Relationships among Caliothrips species (Thysanoptera: Panchaetothripinae) with one new species from Mexico, pp. 384-390 in Zootaxa 4291 (2)</i> on pages 385-386, DOI: 10.11646/zootaxa.4291.2.10, <a href="http://zenodo.org/record/829521">http://zenodo.org/record/829521</a>
Structure and bifurcation of pullback attractors in a non-autonomous Chafee-Infante equation
No full textThe Chafee-Infante equation is one of the canonical infinite-dimensional dynamical systems for which a complete description of the global attractor is available. In this paper we study the structure of the pullback attractor for a non-autonomous version of this equation, ut = uxx + λu - β(t)u3, and investigate the bifurcations that this attractor undergoes as λ is varied. We are able to describe these in some detail, despite the fact that our model is truly non-autonomous; i.e., we do not restrict to 'small perturbations' of the autonomous case
There is a choice for immunosuppressive drug nephrotoxingcity: Is it time to change?
No full textThe central issue in organ transplantation remains suppression
of allograft rejection. Thus, development of
immunosuppressive drugs is the key to successful allograft
function. New immunosuppressive drugs were
introduced on the basis of their ability to reduce the
incidence of acute rejection and to demonstrate shortterm
outcomes at least equivalent to those achieved
with the use of established immunosuppressive therapy.
Although short-term renal allograft survival has
improved since the introduction of calcineurin inhibitors
(CNIs), long-term renal allograft survival remains
a major concern, with chronic allograft nephropathy
(CAN) being the principal cause of renal allograft loss
after the first year. CAN has traditionally been viewed
as the result of repeated low-grade immune responses
directed against allogeneic tissue, but recent evidence
indicates that nonimmunological or alloantigen-independent
factors also contribute to its pathogenesis.
CNI nephrotoxicity occurs soon after initiation of therapy,
is more clearly dose-dependent. This scenario
presents a clear need for new strategies that produce
adequate immunosuppression to prevent acute rejection
and simultaneously reduce adverse effects associated
with CNI-related therapies. To obtain significant
long-term improvement in renal allograft outcomes, it
may be necessary to adopt new immunosuppressive
regimens that rely less on CNIs
Older donors and older recipients in kidney transplantation
No full textOver the last 2 decades, while kidney transplantation
became the therapy of choice for end-stage renal
disease, the increasing gap between the limited
supply of cadaveric donors and the rising demand for
kidneys led to the consideration of alternative strategies
to provide more organs for transplant. The significant
increase of mean donor age suggested the use
of kidneys from older donors. In addition, an increasing
number of donors with significant comorbidities
(e.g., hypertension and diabetes) or deceased due to
stroke have been used since the early 1990s, leading
to the definition of the fuzzy and disputed concept of
“marginal” donors. Such organs are eligible for organ
donation but, because of extreme age and other clinical
characteristics, are expected to produce allografts
at risk for diminished posttransplant function. Thus,
the challenge is now to improve the graft outcome
gap between patients receiving grafts from “marginal”
and “optimal” donors. This implies appropriate
transplantation strategies during all transplant phases,
including reduction of cold ischemia time, recipient
selection, adaptation of immunosuppressive drug
regimens, increase in nephron mass by dual kidney
transplantation and improvement in the graft selection
process using histological criteria. This review summarizes
the current definition of a marginal donor and
provides some suggestions for clinical management
of these particular kidney transplants. We believe that
in this particular transplanted population, an effective
balance should be ensured between maintaining graft
survival, reducing the impact of immunosuppressive
toxicity and maximizing patient quality of life through
the reduced incidence of cardiovascular disease and
malignancies
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