11,081 research outputs found
What makes it so hard to look and to listen? Exploring the use of the Cognitive and Affective Supervisory Approach with children’s social work managers
This paper reports on the findings of an ESRC-funded Knowledge Exchange project designed to explore the contribution of an innovative approach to supervision to social work practitioners’ assessment and decision-making practices. The Cognitive and Affective Supervisory Approach (CASA) is informed by cognitive interviewing techniques originally designed to elicit best evidence from witnesses and victims of crime. Adapted here for use in childcare social work supervision contexts, this model is designed to enhance the quantity and quality of information available for decision-making. Facilitating the reporting of both ‘event information’ and ‘emotion information’, it allows a more detailed picture to emerge of events, as recalled by the individual involved, and the meaning they give to them.
Practice supervisors from Children’s Services in two local authorities undertook to introduce the CASA into supervision sessions and were supported in this through the provision of regular reflective group discussions. The project findings highlight the challenges for practitioners of ‘detailed looking’ and for supervisors of ‘active listening’. The paper concludes by acknowledging that the CASA’s successful contribution to decision-making is contingent on both the motivation and confidence of supervisors to develop their skills and an organisational commitment to, and resourcing of, reflective supervisory practices and spaces
A Role for the Vacuolating Cytotoxin, VacA, in Colonization and Helicobacter pylori-Induced Metaplasia in the Stomach
Carriage of Helicobacter pylori strains producing more active (s1/i1) forms of VacA is strongly associated with gas-tric adenocarcinoma. To our knowledge, we are the
first to determine effects of different polymorphic forms of VacA on inflammation and metaplasia in the mouse stomach. Bacteria producing the less active s2/i2 form of VacA colonized mice more efficiently than mutants null for VacA or producing more active forms of it, providing the
first evidence of a positive role for the minimally active s2/i2 toxin. Strains producing more active toxin forms induced more severe and extensive metaplasia and in flammation in the mouse stomach than strains producing weakly active (s2/i2) toxin. We also examined the association in humans, controlling for cag PAI status. In human gastric biopsy specimens, the vacA i1 allele was strongly associated with precancerous intestinal metaplasia, with almost complete absence of intestinal metaplasia in subjects infected with i2-type strains, even in a vacA s1, cagA+ background
Cantaloupe : cucumis melo reticulatus: Top Score : temperatures over the storage life and quality
Los objetivos fijados para el presente
trabajo fueron reducir las pérdidas
postcosecha y alargar el perÃodo de conservación
de melones var. Top Score, altamente
perecederos, asà como determinar la composición
quÃmica, el aporte nutricional y su
modificación durante la conservación.
Se realizó un ensayo adicional para
aprovechar frutos de inferior calidad, elaborando
bolitas de melón congeladas.
Ensayos efectuados:
A. Determinación del momento oportuno de
cosecha: se asociaron las caracterÃsticas
internas con las externas del fruto.
Se observó que los parámetros externos
a tener en cuenta son, en orden de importancia:
grado de desprendimiento del
pedúnculo (cicatriz pedúnculo-fruto),
caracterÃsticas de la red y color.
B. Respuesta a distintas condiciones de
conservación:
B1. Comparación entre las temperaturas:
testigo 6 - 10 °C para dos grados de
madurez inferior y superior. Los frutos de menor grado de madurez, más sensibles
al daño por frÃo, se conservaron
mejor a 10 °C; los de grado de madurez
superior, a 6 °C. En ambos casos,
el tiempo máximo de conservación fue
de 21 dÃas.
B2. Comparación de distintas dosis de
hipoclorito: testigo, 250 ppm y 500 ppm
de cloro activo. Se obtuvo mejor resultado
con 500 ppm. En cuanto a composición
quÃmica y valor nutritivo
se destaca el contenido de vitamina C
(47 mg%g), altamente superior al de
otras variedades.
En la elaboración de bolitas congeladas,
se obtuvo un producto de buena calidad
en cuanto a sus caracteres organolépticos
y energéticos, con poca pérdida de vitamina
C y ß-carotenos.This work has the objetive to reduce
post-harvest losses and to lenghten the
storage period of melons var. Top Score, very
perishable. Besides, to determine chemical
composition, nutritive contribution and its
modification during storage.
An additional study to be useful fruits of
inferior quality was done, elaborating little
frozen balls of melon.
Studies:
A. Determination of harvest opportune
date. It was associated internal with
external characteristics of the fruit. It was
observed that the external parameters
to have into account are, in order of
importance: loosening peduncle degree
(peduncle/fruit cicatrix), net characteristics
and color.
B. Responce to different storage conditions.
B1. Comparison among temperatures: test
6 - 10 °C for two inferior and superior
ripening classes. The fruits of less
ripening classes, more sensible to
damage by cold, were better storaged
to 10 °C; those of superior ripening
classes to 6 °C, but in both cases, the
maximun storage time was of 21 days.
B2. Compariason of different hypochlorite
doses: test 250 ppm and 500 ppm of
active chlorine. It was obtained a
better result with 500 ppm. Related
chemical composition and nutritive
value, it is brought out the vitamin C
content (47 mg%g), highly superior to
the other varieties.
Related little frozen balls processing, it
was obtained a good quality product respect
energetics, organoleptic characters and few
loss of vitamin C and ß-carotenes.Fil: Aranit, Elena V..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Giménez, Adriana B..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Guinle, Viviana C..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Roby, Héctor R..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Llera, JoaquÃn.
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Winter, Patricia L..
Universidad Nacional de Cuyo. Facultad de Ciencias Agraria
Nectarine cv. aniversario INTA : harvest opportune date : refrigerated storage
Los objetivos de este trabajo fueron:
1. caracterizar la variedad, realizando determinaciones fÃsicas y quÃmicas en dos
momentos de cosecha;
2. determinar el momento oportuno de cosecha para consumo;
3. evaluar la respuesta al uso de dos modalidades de preenfriamiento: aire forzado e inmersión en agua con 200 ppm de cloro activo.
En cada cosecha se dividió la muestra
según su grado de madurez en:
I frutos con menor tamaño y menor cubrimiento de rojo y sus tonos;
S frutos con mayor tamaño y mayor cubrimiento de rojo.
A la vez, en cada grado de madurez se sometió la mitad de la muestra a preenfriamiento por aire forzado y la restante, por inmersión en agua enfriada con 200 ppm de cloro activo.
Conclusiones:
• Los frutos en el momento oportuno para
cosecha presentan las siguientes caracterÃsticas: peso: 89 g, calibre: 55 mm
peso/calibre: > 1,6 g/mm, presión: 6,7 kgf, sólidos solubles: 9,5°Brix acidez, en ác. cÃtrico: 0,6 g%g, azúcar/acidez: 16, color de superficie: no < 30 % rojo intenso
color de fondo: no >25 % verde amarillento.
• La conservación resulta adecuada has-ta los 21 dÃas desde cosecha, presentando buenas caracterÃsticas con respecto a °Brix, resistencia de pulpa y propiedades organolépticas.
• No hay diferencias entre los dos proce-dimientos de preenfriado, en las condi-ciones del ensayo.This work consisted in:
1. to c haracterize th e variety making
physical and chemical determinations
in two harvest dates;
2. to determine the opportune harvest date
for direct consumption;
3. to evaluate the response to the use of
two precooling modalities: forced air and
inmersion in cold water with 200 ppm of
active chlorine.
The sample was subdivided according
ripening degree, in each one of the conside-red harvest, in:
I fruits with smaller size and less covering
of red and its tones.
S fru its with b ig ger size and b ig ger
covering of red.
One middle of the sample was sub-mitted, in each ripening degree, to precooling
by forced air, and the other middle was
submitted to precooling by inmersion in cold
water with 200 ppm of active chlorine.
The conclusions were:
• The opportune harvest date presents
the following characteristics:
weight: 89 g
caliber: 55 mm
weight/caliber: > 1,6 g/mm
pressure: 6,7 kgf
soluble solids: 9,5 °Brix
acidity, in citric acid: 0,6 g%g
sugar/acidity: 16
superficial color:
not < 30 % intense red
ground color:
not > 25 % yellowish green.
• The storage resulted adequate until 21
days from harvest, presenting good
characteristics respect to °Brix, pulp
resistence and organoleptic characte-ristics.
• There was not differences among the
two precooling procedures, in the essay
conditions.Fil: Roby, Héctor R..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Araniti, Elena V..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Giménez, Adriana B..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Guinle, Viviana C..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Llera, JoaquÃn.
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Winter, Patricia L..
Universidad Nacional de Cuyo. Facultad de Ciencias Agraria
Melons : Honey Dew, Top Score y Amarello : refrigerated storage and quality
Se estudiaron melones Honey Dew, Top
Score y Amarello para:
• mejorar la calidad;
• alargar el perÃodo de conservación;
• reducir las pérdidas postcosecha en la
conservación;
• transferir tecnologÃa al sector productivo.
Se realizaron los siguientes ensayos:
• determinación del momento oportuno
de cosecha;
• respuesta a distintas condiciones de
conservación;
• análisis de la composición quÃmica,
aporte nutricional y su modificación durante
la conservación;
• elaboración de bolitas congeladas de
melón, como aprovechamiento de descartes.
Determinado el momento oportuno de
cosecha para cada variedad y ensayadas
distintas temperaturas de conservación, se
establecieron los tiempos más convenientes
de conservación:
Variedad DÃas ° C
Honey Dew > 30 16 - 22
Top Score a punto maduro 20 10
20 6
Amarello > 40 20 - 22
Por su valor nutritivo se destaca el Top Score cuyo alto contenido vitamÃnico supera
a las otras variedades, si bien es de difÃcil
conservación.
Las bolitas congeladas de melón tienen
muy buena calidad organoléptica, son energéticas
y experimentan poca pérdida de vitaminas.
En cuanto a su conservación, la
más conveniente es la congelación con almÃbar.The objetives of this work, in Honey
Dew, Top Score and Amarello melons, were:
• to improve the quality;
• to extend the storage period;
• to reduce the post-harvest losses;
• to transfer the technology developed to
the productive sector.
It was done the following studies:
• determination of the opportune harvest
date;
• response to different storage conditions;
• chemical composition analysis, nutritive
contribution and modifi-cation during
storage;
• elaboration of little frozen balls of melon
as utilization of refuses.
With the determination of the opportune
harvest date for each variety and studies of
differents storage temperatures, it was found
that the storage times more convenient are:
Variety Days ° C
Honey Dew > 30 16 - 22
Top Score ripening initiated
ripe
20
20
10
6
Amarello > 40 20 - 22
Respect of the nutritive value, it is
brought out Top Score variety by its high
vitamins content respect to other varieties,
although is difficult storage variety.
The little frozen balls are very good
quality products by their organoleptic
characteristics, energetics and with few
vitamins lost. About elaboration varyings is
more convenient the freezing with sugar
sirup.Fil: Guinle, Viviana C..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Giménez, Adriana B..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Araniti, Elena V..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Roby, Héctor R..
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Llera, JoaquÃn.
Universidad Nacional de Cuyo. Facultad de Ciencias AgrariasFil: Winter, Patricia L..
Universidad Nacional de Cuyo. Facultad de Ciencias Agraria
The Stark effect in linear potentials
We examine the Stark effect (the second-order shift in the energy spectrum
due to an external constant force) for two 1-dimensional model quantum
mechanical systems described by linear potentials, the so-called quantum
bouncer (defined by V(z) = Fz for z>0 and V(z) infinite for z<0) and the
symmetric linear potential (given by V(z) = F|z|). We show how straightforward
use of the most obvious properties of the Airy function solutions and simple
Taylor expansions give closed form results for the Stark shifts in both
systems. These exact results are then compared to other approximation
techniques, such as perturbation theory and WKB methods. These expressions add
to the small number of closed-form descriptions available for the Stark effect
in model quantum mechanical systems.Comment: 15 pages. To appear in Eur. J. Phys. Needs Institute of Physics
(iopart) style file
Spin-zero anomaly in the magnetic quantum oscillations of a two-dimensional metal
We report on an anomalous behavior of the spin-splitting zeros in the de
Haas-van Alphen (dHvA) signal of a quasi-two-dimensional organic
superconductor. The zeros as well as the angular dependence of the amplitude of
the second harmonic deviate remarkably from the standard Lifshitz-Kosevich (LK)
prediction. In contrast, the angular dependence of the fundamental dHvA
amplitude as well as the spin-splitting zeros of the Shubnikov-de Haas signal
follow the LK theory. We can explain this behavior by small chemical-potential
oscillations and find a very good agreement between theory and experiment. A
detailed wave-shape analysis of the dHvA signal corroborates the existence of
an oscillating chemical potential
Factors predictive of successful retention in care among HIV-infected men in a universal test-and-treat setting in Uganda and Kenya: A mixed methods analysis.
BackgroundPrevious research indicates clinical outcomes among HIV-infected men in sub-Saharan Africa are sub-optimal. The SEARCH test and treat trial (NCT01864603) intervention included antiretroviral care delivery designed to address known barriers to HIV-care among men by decreasing clinic visit frequency and providing flexible, patient-centered care with retention support. We sought to understand facilitators and barriers to retention in care in this universal treatment setting through quantitative and qualitative data analysis.MethodsWe used a convergent mixed methods study design to evaluate retention in HIV care among adults (age > = 15) during the first year of the SEARCH (NCT01864603) test and treat trial. Cox proportional hazards regression was used to evaluate predictors of retention in care. Longitudinal qualitative data from n = 190 in-depth interviews with HIV-positive individuals and health care providers were analyzed to identify facilitators and barriers to HIV care engagement.ResultsThere were 1,863 men and 3,820 women who linked to care following baseline testing. Retention in care was 89.7% (95% CI 87.0-91.8%) among men and 89.0% (86.8-90.9%) among women at one year. In both men and women older age was associated with higher rates of retention in care at one year. Additionally, among men higher CD4+ at ART initiation and decreased time between testing and ART initiation was associated with higher rates of retention. Maintaining physical health, a patient-centered treatment environment, supportive partnerships, few negative consequences to disclosure, and the ability to seek care in facilities outside of their community of residence were found to promote retention in care.ConclusionsFeatures of the ART delivery system in the SEARCH intervention and social and structural advantages emerged as facilitators to retention in HIV care among men. Messaging around the health benefits of early ART start, decreasing logistical barriers to HIV care, support of flexible treatment environments, and accelerated linkage to care, are important to men's success in ART treatment programs. Men already benefit from increased social support following disclosure of their HIV-status. Future efforts to shift gender norms towards greater equity are a potential strategy to support high levels of engagement in care for both men and women
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