23,067 research outputs found
Diagnostic Imaging of Infections and Inflammatory Diseases: A Multidisciplinary Approach
No full textThoroughly and systematically presents the state-of-the-art in the diagnostic uses of radiologic imaging and nuclear medicine in the diagnosis and management of infectious and inflammatory diseases
Although our understanding of microorganisms has advanced significantly and antimicrobial therapy has become increasingly available, infection remains a major cause of patient morbidity and mortality. Imaging of infection and inflammation provides a classic example of radiology and nuclear medicine’s strengths as well as weaknesses in the discovery and diagnosis of disease. Fortunately, the weaknesses are subsiding as new studies and techniques point to better planning and precision in the use of single and combined imaging modalities.
Diagnostic Imaging of Infections and Inflammatory Diseases: A Multidisciplinary Approach deals with the very latest developments in the use of radiologic techniques and modalities in the management of patients with a host of infectious and inflammatory diseases. Tremendously timely and useful, this innovative, multidisciplinary book covers a wide range of topics in three parts:
PART 1: Infections and Host Response
Epidemiology of Infections in the New Century
Bacterial Osteomyelitis: the Clinician Point of View
PART 2: Radiological Imaging
Radiological Imaging of Osteomyelitis
Radiological Imaging of Spine Infection
Radiological Imaging of Soft Tissue Infections
Radiological Imaging of Abdominal Infections and Inflammatory Disease
Radiological Imaging of Vascular Graft Infection
Radiological Imaging of TB and HIV
PART 3: Nuclear Medicine Imaging
Nuclear Medicine Imaging of Infections: Techniques, Acquisition Protocols, and Interpretation Criteria
Nuclear Medicine Imaging of Osteomyelitis: WBC, Monoclonal Antibody, or Bacterial Imaging?
Nuclear Medicine Imaging of Spondylodiscitis: The Emerging Role of PET
Nuclear Medicine Imaging of Soft Tissue Infections
Nuclear Medicine Imaging of Infections and Inflammatory Diseases of the Abdomen
Nuclear Medicine Imaging of Vascular Graft Infections: The Added Role of Hybrid Imaging
Nuclear Medicine Imaging of TB and HIV
Nuclear Medicine Imaging of Fever of Unknown Origin
Nuclear Medicine Imaging of Inflammatory Disease
La poesía de Tomás Quintero
No full textThe poetry of Tomás Quintero (Santiago de Cali, Colombia, 1945-1978) is not known among most of the Colombian poets. It has not been published in any renown national anthology. This is not because of a lack of poetic quality, but due to the lesser known nature of his work. The following article is critical attempts to analyze his poetry, with the purpose of subtract it from some form of silence and oblivion. The article address the poetic contexts, the thematic, conceptual and formal foundations through which Tomás Quintero raised his poetics.La poesía de Tomás Quintero (Santiago de Cali, Colombia, 1945- 1978) no es conocida entre la mayoría de los críticos literarios colombianos. De hecho, no ha sido publicado en ninguna antología nacional de renombre, no por falta de calidad poética, sino por el desconocimiento de su obra. En ese sentido, el siguiente artículo es un intento crítico de analizar su poesía, con el propósito de reivindicarla y sustraerla del silencio y el olvido. Para ello abordaremos los contextos poéticos, así como los cimientos temáticos, conceptuales y formales a través de los cuales Tomás Quintero construyó su poética
A METADATA BASED APPROACH FOR ANALYZING UAV DATASETS FOR PHOTOGRAMMETRIC APPLICATIONS
No full textThis paper proposes a methodology for pre-processing and analysing Unmanned Aerial Vehicle (UAV) datasets before photogrammetric processing. In cases where images are gathered without a detailed flight plan and at regular acquisition intervals the datasets can be quite large and be time consuming to process. This paper proposes a method to calculate the image overlap and filter out images to reduce large block sizes and speed up photogrammetric processing. The python-based algorithm that implements this methodology leverages the metadata in each image to determine the end and side overlap of grid-based UAV flights. Utilizing user input, the algorithm filters out images that are unneeded for photogrammetric processing. The result is an algorithm that can speed up photogrammetric processing and provide valuable information to the user about the flight path
Built Heritage documentation and management: an integrated conservation approach in Bagan
No full textGood practices in heritage conservation are based on accurate information about conditions, materials, and transformation of built heritage sites. Therefore, heritage site documentation and its analysis are essential parts for their conservation. In addition, the devastating effects of recent catastrophic events in different geographical areas have highly affected cultural heritage places. Such areas include and are not limited to South Europe, South East Asia, and Central America. Within this framework, appropriate acquisition of information can effectively provide tools for the decision-making process and management. Heritage documentation is growing in innovation, providing dynamic opportunities for effectively responding to the alarming rate of destruction by natural events, conflicts, and negligence. In line with these considerations, a multidisciplinary team – including students and faculty members from Carleton University and Yangon Technological University, as well as staff from the Department of Archaeology, National Museum and Library (DoA) and professionals from the CyArk foundation – developed a coordinated strategy to document four temples in the site of Bagan (Myanmar). On-field work included capacity-building activities to train local emerging professionals in the heritage field (graduate and undergraduate students from the Yangon Technological University) and to increase the technical knowledge of the local DoA staff in the digital documentation field. Due to the short time of the on-field activity and the need to record several monuments, a variety of documentation techniques, including image and non-image based ones, were used. Afterwards, the information acquired during the fieldwork was processed to develop a solid base for the conservation and monitoring of the four documented temples. The relevance of developing this kind of documentation in Bagan is related to the vulnerability of the site, often affected by natural seismic events and flooding, as well as the lack of maintenance. Bagan provided an excellent case study to test the effectiveness of the proposed approach, to prevent and manage the damages of catastrophic events, and to support retrofitting actions. In order to test the flexibility of adopted methodology and workflow, temples with different features – in terms of architectural design, shape, and geometry – were selected. The goals of these documentation activities range from testing digital documentation workflows for the metric and visual recording of the site (reviewing strengths and limitations of particular recording techniques), to the definition of effective conditions assessment strategies
A method to determine ingredient functionality in baked tortilla chips
No full textDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Includes bibliographical references.Issued also on microfiche from Lange Micrographics.An air impingement oven was used to evaluate the structures developed by different ingredients in baked corn chips and baked tortilla chips. Dry masa flour (DMF) was hydrated into masa, sheeted and cut. Masa triangles were baked in an air impingement oven to produce baked corn chips. Masa pieces were baked in a three-tier oven and then in an air impingement oven to produce baked tortilla chips. All chips were additionally dried in a forced air oven to reach the desired moisture content. Normal and waxy rice flours, sorghum flour, waxy sorghum flour, and waxy corn starch were evaluated. The starch and flours were gelatinized and tested. Chip texture was measured with a texture analyzer rupture test and a breakage susceptibility test. Selected baked corn chips were viewed through an environmental scanning electron microscope. A sensory panel for baked corn chips was conducted. Chips prepared with different ingredients through the two baking processes developed substantially different textures and structures. Gelatinization promoted puffing during baking through the development of a tight gel matrix that hindered the escape of steam by covering surface pores. Waxy ingredients helped develop a porous structure with numerous small air cells, probably due to their higher swelling capacity and to the slow reassociation of amylopectin chains. The extent of gelatinization prior to baking and the amylose/amylopectin ratio in each formulation significantly contributed to the structure and texture developed during and after baking. The air impingement baking procedure proved to be useful to evaluate the functionality of various additives that produced baked chips with significantly different structures and textures. This process is probably not directly scaleable for large production but it is a promising technique that points out what changes might be expected when different ingredients are added to masa in an effort to improve baked chip texture
Components + Aspects : A General Overview
No full textIn the last few years, new ways of decomposing systems have been proposed. First,
component-oriented development has been widely recognized as a paradigm for developing
systems using pieces called components. But more recently, a new philosophy
known as advanced separation of concerns or aspect-oriented programming has arisen.
This paradigm has as one of its main aims the improvement of systems’ decomposition.
Although at first sight it seems that both approaches clash, they are not incompatible.
Therefore, the main goal of this paper is to analise the different proposals to bridge
the gap between components and aspects. After surveying them, it can be noticed that
most of them still are at the implementation level, and there is a lot of ongoing work on
earlier phases. Finally, it should be stressed that there is also a great need for metrics
in order to measure and compare results in an objective way.En los ´ultimos a˜nos se han propuesto nuevas formas de descomponer sistemas. En
primer lugar, el desarrollo orientado a componentes se ha reconocido ampliamente
como un paradigma para construir sistemas utilizando piezas llamadas componentes.
Pero, m´as recientemente, ha surgido con fuerza una nueva filosof´ıa conocida como separaci
´on avanzada de conceptos o programaci´on orientada a aspectos. Este paradigma
tiene como uno de sus principales objetivos el mejorar la descomposici´on de sistemas.
Aunque a primera vista parezca que ambos enfoques entran en conflicto, ´estos no son
incompatibles. Por lo tanto, el principal objetivo de este trabajo es analizar las distintas
propuestas que hay para acercar el mundo de los componentes al mundo de los aspectos.
Tras un an´alisis de las mismas, se tiene que la mayor´ıa de ellas a´un se mueven en
la fase de implementaci´on, y que queda mucho por hacer en las fases previas. Adem´as,
otro punto a destacar es la necesidad de m´etricas para medir y comparar resultados de
forma objetiva.Ministerio de Ciencia y Tecnología TIC 2003-36
Dasymutilla colorado Cambra, Williams and Quintero 2018, new species
No full textDasymutilla colorado Cambra, Williams and Quintero, new species (Fig. 17–22, 24) Holotype female. PANAMA, Panam á Province, Monumento Natural Barro Colorado, Península Gigante, 1.viii.1990, A. Mena (captured in copula, mounted on same pin with male Allotype, deposited in CDFA). Paratypes (MIUP except where noted). PANAMA: Panamá Province: same data as holo- type (1m, CDFA); 23.vii.1990, D. Quintero, 1f; 30.vii.1990, A. Mena, 1f; 27–29.viii.1990, 1f; 3.viii.1990, 1f; Barro Colorado Island: 14.vi.1993, J. Coronado, 1f; 27.iv.1994, J. Pickering, 1m; 4–11.v. 1994, 1m; 11–18.v. 1994, 1m; 18–25.v. 1994, 1m; 3–10.vi. 2002, 1m; 20–27.vii. 1994, 1m; 10–17.viii. 1994, 1m; 29.viii.2001, D. Windsor (1m, CDFA); 26.xii. 2001, 1m; 22–28.v. 2002, 1m; 29.v. 2002, 4m; 12–20.vi. 2002, 2m; 26.vi. 2002, 1m; 4–12.ix. 2002 (1m, CDFA); 11.vi. 2003, 1m; 10.ix. 2003, 1m; 17.ix. 2003, 1m; 24–31. iii. 2004, 1m; 5–12.v. 2004, 2m; 19.v. 2004, 5m; 26.v. 2004, 4m; 9.vi. 2004, 1m; 15.ix. 2004, 1m; 29.xii. 2004, 1m; 4.v. 2005, 1m; 11.v. 2005, 3m; 18.v. 2005, 3m; 25.v. 2005, 2m; 15.vi. 2005, 1m; 24–31.viii. 2005, 1m; 25.i. 2006, 1m; 19.iv. 2006, 1m; 26.iv. 2006, 1m; 3.v. 2006, 1m; 10.v. 2006, 3m; 27.ix. 2006, 1m; 28.iii. 2007, 1m; 3.vi.1981, 2f; 17.iv.1981, 1f; 7.v.1981, 1f; 25.v.1981, 1f; 21.viii. 1977, 1m; 3–6.vi.1967, M. Naumann, 1m; 7.vi.1956, C. Rettenmeyer, 1m; P. Nac. Soberanía, camino Plantación, 16.ix.2000, D. Quintero & A. Santos (1f, CDFA); Campana, Chica, 1–25.x.2013, Y. Cheng, 1m; P. Nac. Campana, 16.vi.1991, J. Coronado, 1f; 10.vi.2007, Y. Christopher (1f, CDFA); Cerro Azul, Urbanizacion Las Nubes, 2.ix.2001, D. Quintero, 1f. Coclé Province: El Copé, 900m, 24.ix.1990, D. Quintero, 2f. Darién Province: P. Nac. Darién, Pirre, Estación Rancho Frío, 3–17.x.2002, R. Cambra, 1f; P. Nac. Darién, Estación Cruce de Mono, 250 msnm, 7°55′N, 77°39′W, 8.ii.1993, R. Cambra & J. Coronado, 1f; 17.ii.1993, 1f; 26.ii.1993 (1m, CDFA). Diagnosis. FEMALE. This species can be separated from other Dasymutilla by the triangular pygidium. It can be separated from Traumatomutilla with a similar triangular pygidium by the unarmed posterolateral head margins, the rounded femoral apices, and the red mesosoma. The following diagnostic characters are also useful: the antennal scrobe has a dorsal carina that is sometimes weak; the gena has a distinct carina; the mesosoma is longer than broad and has a distinct scutellar scale; and T2 is marked with two yellow subcircular patches. MALE. This species has the integument black, clothed with black and white setae only; T4 and T5 each have a dense band of white setae; the tibial spurs are white; S2 lacks a seta-filled pit; the posterior margin of the hypopygium has a median notch, and the forewing marginal cell is apically acute. Description. FEMALE (holotype). Body length 11 mm. Body black, except apical flagellomeres, mandible, and leg joints partly brown, mesosoma largely reddish dorsally and laterally; and T2 with two distinct yellow subcircular patches. Head and mesosoma with appressed setae predominantly pale yellow and erect setae predominantly blackish; metasoma with distinct white setal patch on T1 and T2; with distinct whitish fringe or band on T4–5 and S2–5; whitish setae on T2 patches and laterally on T2–3; remaining metasomal setae black. Head. Genal carina present and distinct; subgenal carina absent; antennal scrobe with dorsal carina partially obliterated; head, including outer margin of eyes; broader than mesosoma; posterolateral angle of vertex without tubercle. Entire head with deep contiguous punctures, many interspaces cariniform. Mesosoma. Longer than broad in dorsal view, perpendicularly truncate posteriorly; dorsally with deep contiguous punctures, interspaces mostly cariniform; humeral carina weak, basically continuous to epaulet; scutellar scale present; lateral and posterior propodeal faces smoothly rounded together with similar dense punctation; mid and hind femora rounded apically; tarsomere five apex with laminar process notched medially, process covering base of claws. Metasoma. T1 narrowly petiolate with globose T2; T2–6 with deep contiguous punctures, interspaces mostly cariniform; pygidial area higher than wide, narrow at base, with few weak longitudinal striae. MALE. Body length 10.5 mm. Color. Entirely black except flagellum, mandible and leg joints partly brown. Setae predominantly scattered whitish except head with erect black setae; mesoscutum with erect and appressed black setae; T1, T4, and T5 with distinct white setal bands, remaining tergites with setae mostly black. Head. Genal carina absent; clypeus anterior margin with two denticles or tubercles; mandible apically oblique, tridentate; ocelli small: OOD ~5× DLO, IOD subequal to DLO; head slightly swollen posteromedially. Mesosoma. Mostly with deep confluent punctures; mesopleuron without protuberance near tegula; tegula mostly smooth; axilla punctate dorsally, apically oblique with truncate setose posterior face; propodeum reticulate; apices of mid and hind femora more or less rounded, not sulcate; tibial spur white; marginal cell with pointed apex to marginal vein. Metasoma. T1 narrowly petiolate with T2; S2 without seta-filled pit; S2 base without carina, evenly convex; T6 mostly smooth with apical setal fringe; hypopygium apical margin with median V-shaped notch; S7 Posterolateral angles not dentiform, lateral borders without carina. Distribution. Known only from central and eastern Panama. Etymology. From the Spanish “ colorado ” meaning red colored. Jointly named in reference to the female’s uncommon mesosomal color and Barro Colorado Island, where the type was collected and this project originated. Treat as noun in apposition. Remarks. In the key to Neotropical Dasymutilla (Manley and Pitts 2007), females of this species run to various couplets depending on how the antennal scrobe carina is scored. Most specimens key to couplet 32 with Dasymutilla twegeni Manley and Pitts, 2007 from Mexico. They can be separated from D. twegeni by having the mesosoma reddish and the pygidial area higher than wide, narrowed basally, and mostly unsculptured. Other specimens key to couplet 47 with Dasymutilla buenavista Manley and Pitts, 2007 from Mexico. They can be separated from D. buenavista by having the mesosoma reddish, T2 with two yellow maculae, without a sinuate carina anterior to the scutellar scale, and having the pygidial area mostly unsculptured. Still other females key to couplet 47 and were discussed briefly as potential members of the genus Traumatomutilla in Williams et al. (2017). The diagnostic characters and habitus photos presented here will allow immediate recognition of this species. Males are similar to Dasymutilla militaris nigriceps (Cresson, 1865) from Cuba, Bahamas and Dominican Republic. Both species have the integument black, clothed with black and white setae, S2 without seta-filled pit, and the posterior margin of the hypopygium with a median notch. It differs from D. m. nigriceps in the following combination of characters: the wings are uniform in color with the marginal cell apically acute; T2 has erect and sparse white setae basally; T3 is clothed mostly with black setae; the pygidial area is mostly unsculptured; while D. militaris has the wings banded and marginal cell apically truncate, has the T2 base and T3 totally with dense decumbent white pubescence that hides the integument; and the pygidial area is finely rugose. Dasymutilla and Traumatomutilla are notoriously difficult to separate and could eventually be synonymized (Manley and Pitts 2007). Both genera are diverse and morphologically variable, with Dasymutilla being predominantly North American and Traumatomutilla being predominantly South American. This species functionally represents a middle ground between the genera, having female coloration similar to Dasymutilla, male coloration similar to Traumatomutilla, and occurring at the border between North and South America. Because Dasymutilla is the older name, we place D. colorado in that genus.Published as part of Cambra, Roberto A., Williams, Kevin A., Quintero, Diomedes, Windsor, Donald M., Pickering, John & Saavedra, Daisy, 2018, Dasymutilla Ashmead (Hymenoptera, Mutillidae) in Panama: new species, sex associations and seasonal flight activity, pp. 1-17 in Insecta Mundi 608 on pages 6-8, DOI: 10.5281/zenodo.369706
Del dicho al hecho: Necesidad de transformar los procesos de cambio educativo
No full textHow to cite:
Quintero, A. H. & Estrada, M. (2002). Del dicho al hecho: Necesidad de transformar los procesos de cambio educativo. Pedagogía, 36(1), 126-139.Cómo citar:
Quintero, A. H. & Estrada, M. (2002). Del dicho al hecho: Necesidad de transformar los procesos de cambio educativo. Pedagogía, 36(1), 126-139
Outcome of twin–twin transfusion syndrome according to Quintero stage of disease: systematic review and meta-analysis
No full textObjectives: To report the outcome of pregnancies complicated by twin–twin transfusion syndrome (TTTS) according to Quintero stage. Methods: MEDLINE, EMBASE and CINAHL databases were searched for studies reporting the outcome of pregnancies complicated by TTTS stratified according to Quintero stage (I–V). The primary outcome was fetal survival rate according to Quintero stage. Secondary outcomes were gestational age at birth, preterm birth (PTB) before 34, 32 and 28 weeks' gestation and neonatal morbidity. Outcomes are reported according to the different management options (expectant management, laser therapy or amnioreduction) for pregnancies with Stage-I TTTS. Only cases treated with laser therapy were considered for those with Stages-II–IV TTTS and only cases managed expectantly were considered for those with Stage-V TTTS. Random-effects head-to-head meta-analysis was used to analyze the extracted data. Results: Twenty-six studies (2699 twin pregnancies) were included. Overall, 610 (22.6%) pregnancies were diagnosed with Quintero stage-I TTTS, 692 (25.6%) were Stage II, 1146 (42.5%) were Stage III, 247 (9.2%) were Stage IV and four (0.1%) were Stage V. Survival of at least one twin occurred in 86.9% (95% CI, 84.0–89.7%) (456/552) of pregnancies with Stage-I, in 85% (95% CI, 79.1–90.1%) (514/590) of those with Stage-II, in 81.5% (95% CI, 76.6–86.0%) (875/1040) of those with Stage-III, in 82.8% (95% CI, 73.6–90.4%) (172/205) of those with Stage-IV and in 54.6% (95% CI, 24.8–82.6%) (5/9) of those with Stage-V TTTS. The rate of a pregnancy with no survivor was 11.8% (95% CI, 8.4–15.8%) (69/564) in those with Stage-I, 15.0% (95% CI, 9.9–20.9%) (76/590) in those with Stage-II, 18.6% (95% CI, 14.2–23.4%) (165/1040) in those with Stage-III, 17.2% (95% CI, 9.6–26.4%) (33/205) in those with Stage-IV and in 45.4% (95% CI, 17.4–75.2%) (4/9) in those with Stage-V TTTS. Gestational age at birth was similar in pregnancies with Stages-I–III TTTS, and gradually decreased in those with Stages-IV and -V TTTS. Overall, the incidence of PTB and neonatal morbidity increased as the severity of TTTS increased, but data on these two outcomes were limited by the small sample size of the included studies. When stratifying the analysis of pregnancies with Stage-I TTTS according to the type of intervention, the rate of fetal survival of at least one twin was 84.9% (95% CI, 70.4–95.1%) (94/112) in cases managed expectantly, 86.7% (95% CI, 82.6–90.4%) (249/285) in those undergoing laser therapy and 92.2% (95% CI, 84.2–97.6%) (56/60) in those after amnioreduction, while the rate of double survival was 67.9% (95% CI, 57.0–77.9%) (73/108), 69.7% (95% CI, 61.6–77.1%) (203/285) and 80.8% (95% CI, 62.0–94.2%) (49/60), respectively. Conclusions: Overall survival in monochorionic diamniotic pregnancies affected by TTTS is higher for earlier Quintero stages (I and II), but fetal survival rates are moderately high even in those with Stage-III or -IV TTTS when treated with laser therapy. Gestational age at birth was similar in pregnancies with Stages-I–III TTTS, and gradually decreased in those with Stages-IV and -V TTTS treated with laser and expectant management, respectively. In pregnancies affected by Stage-I TTTS, amnioreduction was associated with slightly higher survival compared with laser therapy and expectant management, although these findings may be confirmed only by future head-to-head randomized trials. Copyright © 2020 ISUOG. Published by John Wiley & Sons Ltd
The effect of various cropping systems upon the stability of aggregates: the rate of water infiltration, and the organic matter content of three soil conditions in the Texas Blacklands.
No full textDue to the character of the original source materials and the nature of batch digitization, quality control issues may be present in this document. Please report any quality issues you encounter to [email protected], referencing the URI of the item.Bibliography: p. 52-53.Not availabl
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