133 research outputs found
Efeito do preparo de área agrícola na densidade de esporos de fungos micorrízicos arbusculares no solo.
No full textA associação micorrízica é uma estratégia biológica de simbiose no solo entre alguns fungos e raiz das plantas. A manutenção desses fungos pode ser alterada de acordo com o manejo do solo e resiliência do agroecossistema. O objetivo deste estudo foi verificar a influência do preparo de área agrícola após um ano na densidade de esporos de fungos micorrízicos arbusculares (FMA), em Marapanim-Pa. O estudo foi conduzido em áreas de preparo convencional (corte e queima) e alternativo (corte e trituração). Em cada área, foram definidos quatro transectos (repetição), onde foram coletados solos nas profundidades de 0-5 e 5-10 cm. Após um ano de implantação da área de cultivo, o corte e queima apresentou maior número de FMA nas profundidades avaliadas. Após um ano do preparo de área, o sítio em que teve a vegetação queimada apresentou maior número de esporos de FMA, estratégia biológica para manutenção desses seres em área alterada drasticamente
Brain protein expression changes in WAG/Rij rats, a genetic rat model of absence epilepsy after peripheral lipopolysaccharide treatment
No full textPeripheral injection of bacterial lipopolysaccharide (LPS) facilitates 8–10 Hz spike-wave discharges (SWD) characterizing absence epilepsy in WAG/Rij rats. It is unknown however, whether peripherally administered LPS is able to alter the generator areas of epileptic activity at the molecular level. We injected 1 mg/kg dose of LPS intraperitoneally into WAG/Rij rats, recorded the body temperature and EEG, and examined the protein expression changes of the proteome 12 h after injection in the fronto-parietal cortex and thalamus. We used fluorescent two-dimensional differential gel electrophoresis to investigate the expression profile. We found 16 differentially expressed proteins in the fronto-parietal cortex and 35 proteins in the thalamus. It is known that SWD genesis correlates with the transitional state of sleep–wake cycle thus we performed meta-analysis of the altered proteins in relation to inflammation, epilepsy as well as sleep. The analysis revealed that all categories are highly represented by the altered proteins and these protein-sets have considerable overlap. Protein network modeling suggested that the alterations in the proteome were largely induced by the immune response, which invokes the NFkB signaling pathway. The proteomics and computational analysis verified the known functional interplay between inflammation, epilepsy and sleep and highlighted proteins that are involved in their common synaptic mechanisms. Our physiological findings support the phenomenon that high dose of peripheral LPS injection increases SWD-number, modifies its duration as well as the sleep–wake stages and decreases body temperature
Alkali treatment for single-stage co-evaporated thin CuIn<sub>0.7</sub>Ga<sub>0.3</sub>Se<sub>2</sub> solar cells
No full text© 2018 Elsevier B.V. KF and NaF treatments were done for single-stage co-evaporated CuIn0.7Ga0.3Se2. The absorber layers were grown on a substrate with an alkali barrier layer and NaF was either added before or after absorber layer growth. No differences were found on the device performance amongst the procedures to add Na. This is expected if the single-stage process does not have a copper rich stage or a Ga gradient, which is likely since there was no change of the elemental fluxes during absorber layer growth and no Ga profile was measured. KF was added by post-deposition only. Current-voltage characteristics were measured and net doping concentrations were determined from capacitance-voltage measurements (CV). We see an improvement of the open-circuit voltage (Voc) with increasing KF amount, and a marginal increase of the fill factor. CV measurements showed increasing net acceptor concentration with increasing KF amount. Time resolved photoluminescence (PL) showed an increased decay time for KF treated cells and the PL peak shape changed. Without KF treatment the PL peak is symmetric, after KF treatment a further peak appears at higher energy in the PL spectrum. This higher energy peak increases in intensity with increasing KF concentration. The same effects were seen in a sample without Na, but here the Voc was limited due to large tailing. Hence both Na and K are required for good cell efficiencies.sponsorship: This work received funding from the European Union's H2020 research and innovation program under grant agreement No. 715027. (European Union's H2020 research and innovation program|715027, European Research Council (ERC)|715027)status: Publishe
Housing Conditions – Dwellings and Their Occupants
Get PDFThe study presents some features of the housing stock, occupied dwellings as well as their occupants. In addition to 2011 census data, 2001 census statistics are also presented to provide an overview of the housing conditions changes. With respect to occupied dwellings, the author examines ownership, purpose of occupation, number of rooms, floor area, year of construction, walls, level of comfort, facilities, settlement type and character of residential area. She explores the demographic characteristics, educational attainment and economic activity of occupants, too
A múlt színei : Megjegyzések a fekete-fehér felvételek színes remedializációjáról
No full textA tanulmány a fekete-fehér archív felvételek digitális színezésének problémájával foglalkozik az España en dos trincheras. La guerra civil en color (Francesc Ecribano és Luis Carrizo, 2016) című film elemzésén keresztül, amely a spanyol polgárháborúból fennmaradt több mint 450 filmfelvétel digitalizálásával és színezésével készült el. Az elemzés fókuszában az a kérdés áll, hogy milyen emlékezeti, társadalmi, mediális hatások teszik vonzóvá az archív, fekete-fehér felvételek kolorizációját. A tanulmány elején a szerző a kolorizációs technika mediális-kulturális és társadalmi kontextusára fókuszál. Ezt követően az elemzés a digitális színezés következményeivel foglalkozik a spanyol dokumentumfilm konkrét megvalósításainak tükrében: az eredeti archív felvételek vizualitásában bekövetkezett változásokkal, ezeknek a befogadóra tett hatásaival, illetve azzal, hogy a színezés miként szolgálhatta a térbeliség illúziójának elmélyítését. A tanulmány utolsó részében a szerző azt a kérdést vizsgálja, hogy milyen történelemszemléleti következményekkel járhat a múlt színesben való kialakítása. | The study examines the issue of digitally colorizing black-and-white archival footage
through an analysis of the film España en dos trincheras. La guerra civil en color (Francesc
Ecribano and Luis Carrizo, 2016), which was created using the digitization and colorization
of over 450 film recordings from the Spanish Civil War. The analysis focuses on the
memory, social, and medial effects that make the colorization of black-and-white archival
footage appealing. At the beginning of the study, the author highlights the media-cultural
and social contexts of the colorization technique. Subsequently, the analysis explores the
consequences of digital colorization in the context of specific implementations in Spanish
documentary filmmaking. This includes examining changes in the visuality of the original
archival footage, the effects of these changes on viewers, and how colorization deepens
the illusion of spatiality. In the final section, the study addresses the historical implications
of reimagining the past in colour, raising questions about the interpretive frameworks this
practice imposes on historical understanding
Randomized controlled trial of chlorhexidine gluconate for washing, intranasal mupirocin, and rifampin and doxycycline versus no treatment for the eradication of methicillin-resistant staphylococcus aureus colonization
Get PDFBackground. Eradication of methicillin-resistant Staphylococcus aureus (MRSA) carriage may reduce the risk of MRSA infection and prevent transmission of the organism to other patients.
Methods. To determine the efficacy of decolonization therapy, patients colonized with MRSA were randomized (3 : 1 allocation) to receive treatment (2% chlorhexidine gluconate washes and 2% mupirocin ointment intranasally, with oral rifampin and doxycycline for 7 days), or no treatment. Follow-up samples for MRSA culture were obtained from the nares, perineum, skin lesions, and catheter exit sites monthly for up to 8 months. The primary outcome measure was detection of MRSA at 3 months of follow-up. Univariate and multivariable analyses were performed to identify variables associated with treatment failure.
Results. Of 146 patients enrolled in the study, 112 patients (87 treated; 25 not treated) were followed up for at least 3 months. At 3 months of follow-up, 64 (74%) of those treated had culture results negative for MRSA, compared with 8 (32%) of those not treated (P = .0001). This difference remained significant at 8 months of follow-up, at which time, 54% of those treated had culture results negative for MRSA (χ2 = 64.4; P < .0001, by log-rank test). The results of the multivariable analysis indicated that having a mupirocin-resistant isolate at baseline was associated with treatment failure (relative risk, 9.4; 95% confidence interval, 2.8–31.9; P = .0003), whereas decolonization therapy was protective (relative risk, 0.1; 95% confidence interval, 0.04–0.4; P = .0002). Mupirocin resistance emerged in only 5% of follow-up isolates.
Conclusions. Treatment with topical mupirocin, chlorhexidine gluconate washes, oral rifampin, and doxycycline for 7 days was safe and effective in eradicating MRSA colonization in hospitalized patients for at least 3 months
O processo de avaliação institucional da Universidade de Passo Fundo: percepções de seus dirigentes 1994/1998 /
Get PDFDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Sócio - Econômico.O estudo situa-se no campo das Políticas e Gestão Institucional, consistindo numa pesquisa qualitativa, do tipo estudo de caso, cujo objetivo geral foi conhecer as percepções de dirigentes da Universidade de Passo Fundo referentes ao processo de Avaliação Institucional ocorrido no período de 1994 a 1998. Buscou-se resgatar a história do processo de avaliação institucional, identificar a metodologia utilizada no período, verificar o impacto da avaliação institucional com base na percepção de seus dirigentes e as transformações ocorridas na instituição dela decorrentes. A investigação desenvolveu-se através de entrevistas com informantes-chaves ao tema, que tiveram participação em algum dos acontecimentos considerados relevantes, totalizando 25 dirigentes. Os dados primários foram coletados a partir das informações obtidas através de entrevistas semi-estruturadas e os secundários referem-se àquelas obtidas por meio de análise de documentos e registros. As percepções dos dirigentes revelaram, de modo geral: que o conhecimento da avaliação institucional mostra-se fragmentado, pois há desconhecimento pela grande maioria do que seja o processo, a forma como foram envolvidos os docentes, a discussão de seus critérios, os indicadores e sua aplicação e, também, a socialização dos resultados. Constatou-se que, em se tratando de uma universidade, que congrega vários segmentos, como graduação, pós-graduação, extensão, infra-estrutura e gestão na UPF, a avaliação institucional se restringe à avaliação do desempenho docente/discente e infra-estrutura do ensino na graduação, negligenciando-se os demais
Attenuation of the cardiac effects of cocaine by dizocilpine
No full text Cocaine abuse causes autonomic and cardiovascular effects that may be life threatening. Attenuation of cocaine-induced seizures has been produced by the noncompetitive antagonist of the N-methyl-D-aspartate receptor channel complex, dizocilpine. The purpose of the present study was, first, to determine effects of dizocilpine on the incidence of pacing-induced ventricular arrhythmias and, second, to evaluate the effects of dizocilpine on cocaine-induced depression of sympathetic efferent activity to the heart. Adult dogs were anesthetized and instrumented for blood pressure and an electrocardiogram. After vagotomy and thoracotomy, electrodes and strain gauges were sutured onto the right atrium and ventricle. A left thoracic sympathetic efferent nerve was isolated and stimulated for analysis of the innervation pattern. Arrhythmias were induced with programmed electrical stimulation of the heart before and during left cardiac sympathetic efferent nerve stimulation. The control incidence of induced arrhythmias was only 2%, which increased to 21% during left sympathetic stimulation. Cocaine (2 mg/kg iv) significantly increased these to 11 and 42%, respectively. Dizocilpine (0.5 mg/kg iv) reduced the incidence of induced ventricular arrhythmias to 2% with cocaine (P < 0.05) and to 19% with cocaine and left sympathetic stimulation (P < 0.01). One or two sympathetic efferent cardiac nerves were stimulated to evaluate innervation patterns. These nerves were severed and prepared for recording multifiber efferent neurograms. Nerve traffic was analyzed by counting positive spikes for 15 s. Control activities were normalized at 100%. Within 6 min, cocaine (2 mg/kg iv) reduced the sympathetic efferent activity to 83 +/- 4% of control (n = 14 nerves).(ABSTRACT TRUNCATED AT 250 WORDS) </jats:p
A Rövidített Egészségszorongás-kérdőív (SHAI) magyar verziójának kérdőíves validálása és pszichometriai értékelése = Validation and psychometric evaluation of the Hungarian version of the Short Health Anxiety Inventory (SHAI)
No full textElméleti háttér és célkitűzés: Jelen kutatás célja a Rövidített Egészségszorongás-kérdőív (Short Health Anxiety Inventory — SHAI; Salkovskis, Rimes, Warwick, & Clark, 2002) magyar verziójának elkészítése, pszichometriai értékelése és kérdőíves validálása volt.
Módszerek: A vizsgálatban 441 alsóéves egyetemista (37% férfi; átlagéletkor: 20,5±1,33 év) vett részt, összesen 5 kérdőív kitöltésével (SHAI; Szomatoszenzoros Amplifikáció — SSAS; Vonásszorongás — STAI-T; Szubjektív Testi Tünetek — PHQ-15; WHO Jól-lét — WBI-5).
Eredmények: A megerősítő faktorelemzés mind a két-, mind a háromfaktoros verzió esetében jó illeszkedési mutatókat eredményezett, ezért az irodalomban inkább elfogadott két alskálás (Beteggé válás észlelt valószínűsége; Betegség észlelt következménye) megoldás használatát javasoljuk. A kérdőív magyar verziója jó belső konzisztenciával (Cronbach-alfa = 0,83) bírt, a STAI-T, az SSAS és a PHQ-15 skálákkal közepes erősségű (Pearson-r: 0,33—0,44; p<0,001) korrelációt mutatott, míg a WBI-5 esetében az együttjárás gyengébbnek és negatív irányúnak mutatkozott (—0,26; p<0,001).
Következtetések: Az eredmények alapján a kérdőív pszichometriai szempontból megfelelőnek tűnik, ugyanakkor a végső értékeléshez a vizsgálatot érdemes volna más mintákon is megismételni.
|
Aim: The study aimed at the preparation, psychometric evaluation and questionnaire-based validation of the Hungarian version of the Short Health Anxiety Inventory (SHAI; Salkovskis et al. 2002).
Methods: 441 undergraduate students (37% male; mean age: 20.5±1.33 yrs) completed five questionnaires (SHAI; Somatosensory Amplification — SSAS; Trait Anxiety — STAI-T; Subjective Somatic Symptoms — PHQ-15; Well-being — WHO-WB).
Results: The confirmatory factor analysis indicated equally good fit between the empirical data and the two- and three-factor-models described in the literature. In the light of the international findings, the use of two subscales (Illness Likelihood and Illness Severity) seems to be preferable. The Hungarian version of the questionnaire has shown good internal consistency (Cronbach’s alfa = 0.83) and medium level correlations (Pearson’s coefficients between 0.33 and 0.44; p<0,001) with the STAI-T, SSAS and PHQ-15 scales. The association with the WBI-5 was weaker and negative (r = —0.26; p<0.001).
Conclusion: According to the results, the Hungarian version of the SHAI has good psychometric properties. To come to a final conclusion, replication of the study in different samples would be necessary
- …
