Interviewing children for the purposes of research in primary care

Interviewing can provide unique opportunities for professionals to gain some understanding of the child's subjective experience, where other means of data collection are inappropriate and other sources of data are less valid. This article is concerned with the principles and practicalities of interviewing children for the purposes of health-related research. It draws on the knowledge gained from three decades of research involving interviewing young people in many contexts, including health care, social welfare and child protection. A conceptual framework is presented to illustrate the interactive and iterative processes that occur between interviewer and interviewee, and the pivotal importance of context in shaping any interaction. The influences of the young person's linguistic, cognitive and social skills are discussed. The effects of the gender and ethnicity of both the researcher and the researched are considered in relation to the conduct of the interview, and the influence of adult biases and perspectives on the evaluation and interpretation of data is explored

Recent Environmental Changes in the Arctic: A Review

Numerous recent observations indicate that the Arctic is undergoing a significant change. In the last decade, the hydrography of the Arctic Ocean has shifted, and the atmospheric circulation has undergone a change from the lower stratosphere to the surface. Typically the eastern Arctic Ocean, on the European side of the Lomonosov Ridge, is dominated by water of Atlantic origin. A cold halocline of varying thickness overlies the warmer Atlantic water and isolates it from the sea ice and surface mixed layer. The western Arctic Ocean, on the North American side of the Lomonosov Ridge, is characterized by an added layer of water from the Pacific immediately below the surface mixed layer. Data collected during several cruises from 1991 to 1995 indicate that in the 1990s the boundary between these eastern and western halocline types shifted from a position roughly parallel to the Lomonosov Ridge to near alignment with the Alpha and Mendeleyev Ridges. The Atlantic Water temperature has also increased, and the cold halocline has become thinner. The change has resulted in increased surface salinity in the Makarov Basin. Recent results suggest that the change also includes decreased surface salinity and greater summer ice melt in the Beaufort Sea. Atmospheric pressure fields and ice drift data show that the whole patterns of atmospheric pressure and ice drift for the early 1990s were shifted counterclockwise 40°-60° from earlier patterns. The shift in atmospheric circulation seems related to the Arctic Oscillation in the Northern Hemisphere atmospheric pressure pattern. The changes in the ocean circulation, ice drift, air temperatures, and permafrost can be explained as responses to the Arctic Oscillation, as can changes in air temperatures over the Russian Arctic. De nombreuses observations effectuées récemment indiquent qu'un changement majeur est en train de se produire dans l'Arctique. Au cours des dix dernières années, l'hydrographie de l'océan Arctique s'est déplacée et la circulation atmosphérique a subi un changement, de la basse stratosphère à la surface. En général, l'océan Arctique oriental, du côté européen de la dorsale Lomonosov, est dominé par l'eau d'origine atlantique. Une halocline froide d'épaisseur variable est sus-jacente à l'eau atlantique plus chaude et l'isole de la glace marine et de la couche mixte de surface. L'océan Arctique occidental, du côté nord-américain de la dorsale Lomonosov, se caractérise par une couche supplémentaire d'eau du Pacifique située juste au-dessous de la couche mixte de surface. Les données recueillies au cours de plusieurs croisières de 1991 à 1995 indiquent que, dans les années 1990 la limite entre ces types d'haloclines de l'est et de l'ouest est passée d'une position plus ou moins parallèle à la dorsale Lomonosov, à un alignement presque parfait avec les dorsales Alpha et Mendeleyev. La température des eaux de l'Atlantique a également augmenté, et l'halocline froide s'est amincie. Ce changement a amené une augmentation de la salinité de surface dans le bassin de Makarov. De récents résultats suggèrent que le changement s'accompagne d'une diminution de la salinité de surface et d'une augmentation de la fonte estivale de la glace dans la mer de Beaufort. Les données barométriques et celles de la dérive des glaces montrent que tous les schémas de pression atmosphérique et de dérive des glaces pour les premières années de 1990 se sont déplacés de 40 à 60° par rapport aux précédents. Le déplacement dans la circulation atmosphérique semble lié à l'oscillation arctique dans le schéma de pression atmosphérique de l'hémisphère Nord. Les changements dans la circulation océanique, la dérive des glaces, la température de l'air et le pergélisol peuvent s'expliquer comme une réponse à l'oscillation arctique, tout comme les changements dans la température de l'air au-dessus de l'Arctique russe.

Observational validation of the diffusive convection flux laws in the Amundsen Basin, Arctic Ocean

The low levels of mechanically driven mixing in many regions of the Arctic Ocean make double diffusive convection virtually the only mechanism for moving heat up from the core of Atlantic Water towards the surface. In an attempt to quantify double diffusive heat fluxes in the Arctic Ocean, a temperature microstructure experiment was performed as a part of the North Pole Environmental Observatory (NPEO) 2013 field season from the drifting ice station Barneo located in the Amundsen Basin near the Lomonosov Ridge (89.58N, 758W). A diffusive convective thermohaline staircase was present between 150 and 250 m in nearly all of the profiles. Typical vertical heat fluxes across the high-gradient interfaces were consistently small, O(1021 )Wm22 . Our experiment was designed to resolve the staircase and differed from earlier Arctic studies that utilized inadequate instrumentation or sampling. Our measured fluxes from temperature microstructure agree well with the laboratory derived flux laws compared to previous studies, which could find agreement only to within a factor of two to four. Correlations between measured and parameterized heat fluxes are slightly higher when using the more recent Flanagan et al. [2013] laboratory derivation than the more commonly used derivation presented in Kelley [1990]. Nusselt versus Rayleigh number scaling reveals the convective exponent, g, to be closer to 0.29 as predicted by recent numerical simulations of single-component convection rather than the canonical 1/3 assumed for double diffusion. However, the exponent appears to be sensitive to how convective layer height is defined.publishedVersio

Environmental and macroeconomic impact assessment of different development scenarios to organic and low-input farming in Croatia

This study was commissioned by the UN Food and Agriculture Organization (FAO) within the framework of an FAO technical assistance project for Croatia. It assessed macroeconomic and environmental impact assessment of large-scale conversion to organic agriculture. It examined the consequences of such a conversion to national agricultural output and related environmental and economic performance. The assessment also took into account the impact of wide-spread adoption of organic agriculture on farm-upstream linked sectors (FULS). These include energy production and supply, manufacturing of agri-chemical inputs, trade, transport and research, education, advisory, veterinary and administrative services. The agricultural output, environmental and economic performance of the baseline scenario (average of 2001-2003) was compared with fourteen development scenarios involving various shares of utilised agricultural land (UAA) under organic management (10, 25, 50 and 100 per cent) and different yields (100, 75 and 50 per cent of the baseline). In order to obtain the real value added (RVA) created by farming and FULS, the generated gross value added (GVA) was corrected for the associated environmental costs (damage to air, water and soil) and public investments. A monetary value was assigned to all identified environmental damages throughout farming and FULS using various environmental accounting methods. If the entire UAA in Croatia converted to organic farming and if the crops and livestock gave the same yields as in the baseline situation, the farming and FULS would generate a 43 per cent higher annual GVA and 155 per cent higher annual RVA than the baseline scenario. This scenario implies refraining from the use of nearly all agri-chemical inputs. It consumes far less fossil energy (notably in FULS) and causes less environmental damage to soil and water (notably in the farming sector). Consequently, its environmental costs are nearly two times lower than in the baseline. The study results suggest that Croatian farming and FULS in the period 2001-2003 when measured in terms of RVA produced a negative effect on the economy and society in general. Farming is the key sector since it accounts for 90 per cent of the workforce, 61 per cent of GVA, 89 per cent of environmental costs and 77 per cent of public investments of the entire economic chain examined. The scenario involving a 100 per cent organic area, but yielding only 75 per cent of the baseline scenario produces a 17 per cent lower GVA. However, when corrected for public investments and environmental costs it results in 71 per cent higher RVA than the baseline scenario. The 100 per cent organic area scenario achieving only half of the baseline yields results in both lower GVA (75 percent lower) and RVA (6 per cent lower) than the baseline scenario. Of all examined scenarios, this is the least favourable for organic farming as its results exhibit the biggest discrepancies in comparison with the baseline situation. Similar results were obtained in all other scenarios (involving 50, 25 and 10 per cent organic area with 100, 75 and 50 per cent yield levels as compared to the baseline). The organic options, measured against the RVA created are better (7-89 per cent), only in cases where the yield level is 75 or 100 percent of the baseline. If the obtained yields are 50 per cent lower, the organic scenario options create both lower GVA (1, 19 and 37 per cent) and RVA (1, 2 and 3 per cent) than the baseline. The scenarios assuming a 10 per cent premium price (10 and 25 per cent organic area achieving 75 per cent of the baseline yields) create about the same GVA as the baseline, but 10-25 per cent higher RVA. All scenarios involving organic farming decrease environmental costs compared to the baseline. Provided the yield is not 50 per cent lower, all organic scenarios result in a higher RVA than the baseline. The agricultural output (yields) remains the key factor in determining the feasibility of a shift to organic farming. A severe reduction in agricultural output jeopardises national food security. However, since organic farming goes hand in hand with careful management, in the case of Croatia it would not necessarily lead to (much) lower yields. Pioneering efforts in Croatia, as well as evidence from other countries with a similar agricultultural situation also indicate this. Conversion to large-scale organic farming requires high human and social capital. Organic farming is low-input from the point of view of the use of external farming inputs, but is high-input from the point of view of the knowledge and skills needed. In the case of Croatia where farmers and other key stakeholders have a relatively low level of general education and poor agricultural training, this point will certainly be the main obstacle preventing a greater spread of organic farming. Policy efforts should therefore focus primarily on stimulating the formation of social capital and increasing human capacities of all stakeholders involved in the organic food chain

Arctic–CHAMP: A program to study Arctic hydrology and its role in global change

The Arctic constitutes a unique and important environment that is central to the dynamics and evolution of the Earth system. The Arctic water cycle, which controls countless physical, chemical, and biotic processes, is also unique and important. These processes, in turn, regulate the climate, habitat, and natural resources that are of great importance to both native and industrial societies. Comprehensive understanding of water cycling across the Arctic and its linkage to global biogeophysical dynamics is a scientific as well as strategic policy imperative

Arctic–CHAMP: A program to study Arctic hydrology and its role in global change

The Arctic constitutes a unique and important environment that is central to the dynamics and evolution of the Earth system. The Arctic water cycle, which controls countless physical, chemical, and biotic processes, is also unique and important. These processes, in turn, regulate the climate, habitat, and natural resources that are of great importance to both native and industrial societies. Comprehensive understanding of water cycling across the Arctic and its linkage to global biogeophysical dynamics is a scientific as well as strategic policy imperative

Impact of Organic Agriculture on the Environmental and Economic Performance of Croatia

Within the framework of an FAO technical assistance project for Croatia a study assessing the feasibility of large-scale conversion to organic farming was carried out. It examined the consequences of the conversion of a substantial portion of Croatian agricultural land to organic farming in relation to national agricultural output (food security) and related environmental and economic performance. As farming is closely linked with a range of economic activities, besides farming the assessment also took into account the impact of wide-spread adoption of organic agriculture on farm-upstream linked sectors (FULS). These include energy production and supply, manufacturing of agri-chemical inputs, trade, transport and research, education, advisory, veterinary and administrative services. The agricultural output, environmental and economic performance of the baseline scenario (average of 2001-2003) was compared with fourteen development scenarios involving various shares of utilised agricultural land (UAA) under organic management (10, 25, 50 and 100 per cent) and different yields (100, 75 and 50 per cent of the baseline). In order to enable the same consumer purchasing power as in the baseline situation, organic products were assumed to obtain no premium price in twelve scenarios. In two scenarios approaching the current situation in some European countries (10 and 25 per cent of UAA under organic management with 75 per cent yield) a 10 per cent premium price for organic produce was included. In order to obtain the real value added (RVA) created by farming and FULS, the generated gross value added (GVA) was corrected for the associated environmental costs (damage to air, water and soil) and public investments. The public investments, emissions and environmental degradation of air, water and soil were quantified using data from various official documents and databases, as well as by performing new calculations. A monetary value was assigned to all identified environmental damages throughout farming and FULS using various environmental accounting methods. The difference between the GVA created by the examined economic chain and the sum of environmental costs and public investments resulted in the RVA. The RVA was used as a measurement indicating the economic feasibility of organic farming development scenarios as compared with the baseline scenario. If the entire UAA in Croatia converted to organic farming and if the crops and livestock gave the same yields as in the baseline situation, the farming and FULS would generate a 43 per cent higher annual GVA and 155 per cent higher annual RVA than the baseline scenario. This scenario implies refraining from the use of nearly all agri-chemical inputs. It consumes far less fossil energy (notably in FULS) and causes less environmental damage to soil and water (notably in the farming sector). Consequently, its environmental costs are nearly two times lower than in the baseline. The study results suggest that Croatian farming and FULS in the period 2001-2003 when measured in terms of RVA produced a negative effect on the economy and society in general. Farming is the key sector since it accounts for 90 per cent of the workforce, 61 per cent of GVA, 89 per cent of environmental costs and 77 per cent of public investments of the entire economic chain examined. The scenario involving a 100 per cent organic area, but yielding only 75 per cent of the baseline scenario produces a 17 per cent lower GVA. However, when corrected for public investments and environmental costs it results in 71 per cent higher RVA than the baseline scenario. The 100 per cent organic area scenario achieving only half of the baseline yields results in both lower GVA (75 percent lower) and RVA (6 per cent lower) than the baseline scenario. Of all examined scenarios, this is the least favourable for organic farming as its results exhibit the biggest discrepancies in comparison with the baseline situation. Similar results were obtained in all other scenarios (involving 50, 25 and 10 per cent organic area with 100, 75 and 50 per cent yield levels as compared to the baseline). The organic options, measured against the RVA created are better (7-89 per cent), only in cases where the yield level is 75 or 100 percent of the baseline. If the obtained yields are 50 per cent lower, the organic scenario options create both lower GVA (1, 19 and 37 per cent) and RVA (1, 2 and 3 per cent) than the baseline. The scenarios assuming a 10 per cent premium price (10 and 25 per cent organic area achieving 75 per cent of the baseline yields) create about the same GVA as the baseline, but 10-25 per cent higher RVA. All scenarios involving organic farming decrease environmental costs compared to the baseline. Provided the yield is not 50 per cent lower, all organic scenarios result in a higher RVA than the baseline. The agricultural output (yields) remains the key factor in determining the feasibility of a shift to organic farming. A severe reduction in agricultural output jeopardises national food security. However, since organic farming goes hand in hand with careful management, in the case of Croatia it would not necessarily lead to (much) lower yields. Pioneering efforts in Croatia, as well as evidence from other countries with a similar agricultultural situation also indicate this. Conversion to large-scale organic farming requires high human and social capital. Organic farming is low-input from the point of view of the use of external farming inputs, but is high-input from the point of view of the knowledge and skills needed. In the case of Croatia where farmers and other key stakeholders have a relatively low level of general education and poor agricultural training, this point will certainly be the main obstacle preventing a greater spread of organic farming. Policy efforts should therefore focus primarily on stimulating the formation of social capital and increasing human capacities of all stakeholders involved in the organic food chain

Mesozooplankton Grazing Minimally Impacts Phytoplankton Abundance during Spring in the Western North Atlantic

The impacts of grazing by meso- and microzooplankton on phytoplankton primary production (PP) was investigated in the surface layer of the western North Atlantic during spring. Shipboard experiments were performed on a latitudinal transect at three stations that differed in mixed layer depth, temperature, and mesozooplankton taxonomic composition. The mesozooplankton community was numerically dominated by Calanus finmarchicus at the northern and central station, with Calanus hyperboreusalso present at the northern station. The southern station was \u3e10 °C warmer than the other stations and had the most diverse mesozooplankton assemblage, dominated by small copepods including Paracalanus spp. Microzooplankton grazing was detected only at the northern station, where it removed 97% of PP. Estimated clearance rates by C. hyperboreus and C. finmarchicus suggested that at in-situ abundance these mesozooplankton were not likely to have a major impact on phytoplankton abundance, unless locally aggregated. Although mesozooplankton grazing impact on total phytoplankton was minimal, these grazers completely removed the numerically scarce \u3e 10 µm particles, altering the particle-size spectrum. At the southern station, grazing by the whole mesozooplankton assemblage resulted in a removal of 14% of PP, and its effect on net phytoplankton growth rate was similar irrespective of ambient light. In contrast, reduction in light availability had an approximately 3-fold greater impact on net phytoplankton growth rate than mesozooplankton grazing pressure. The low mesozooplankton grazing impact across stations suggests limited mesozooplankton-mediated vertical export of phytoplankton production. The constraints provided here on trophic transfer, as well as quantitative estimates of the relative contribution of light and grazer controls of PP and of grazer-induced shifts in particle size spectra, illuminate food web dynamics and aid in parameterizing modeling-frameworks assessing global elemental fluxes and carbon export

A first assessment of the sources of isoprene and monoterpene emissions from a short-rotation coppice Eucalyptus gunnii bioenergy plantation in the UK

Eucalyptus gunnii is a fast-growing, cold-tolerant tree species endemic to Tasmania that is suitable for growing as short-rotation coppice (SRC) plantations in the UK. Fast growing eucalypts such as E. gunnii could potentially deliver higher biomass yields with a superior calorific value for the domestic bioenergy market than other SRC plantation species such as willow or poplar. However, eucalypts are known emitters of biogenic volatile organic compounds (BVOC) like isoprene and monoterpenes. These compounds contribute to the formation of atmospheric pollutants such as ozone and secondary organic aerosols. An assessment of the sources of BVOCs during the lifecycle of a UK E. gunnii SRC plantation found the mean standardised emissions of isoprene and total monoterpenes from branches of juvenile foliage to be 7.50 μg C gdw−1 h−1 and 1.30 μg C gdw−1 h−1, respectively. The predominant monoterpene emitted was cis-β-ocimene. Isoprene emissions from the forest floor were extremely low but monoterpene emissions peaked at 50 μg C m−2 h−1. α-Pinene and d-limonene were the major components of the monoterpene emissions, with higher emissions correlated to the abundance of leaf litter. Both the magnitude and composition of monoterpene emissions from the forest floor varied during the SRC plantation life cycle, with the coppiced and regrowth stands of eucalyptus producing less emissions. The woodchip produced at harvesting emitted only trace levels of isoprene but substantial monoterpene emissions, up to 90 μg C m−2 h−1, predominately eucalyptol. Harvesting and resulting biomass chips may provide a short-lived concentrated source of BVOCs in winter at SRC plantations. Modelled annual emissions using MEGAN 2.1 (canopy emissions only) suggest that BVOC emissions from a UK E. gunnii SRC plantation are most abundant in summer, and that modelled annual isoprene and total monoterpenes emissions could be around 6.9 kg C ha−1 and 2.4 kg C ha−1 respectively, for a young plantation. Based on the very limited data, the per-hectare E. gunnii isoprene emissions are smaller than estimates for other SRC/SRF plantation species in the UK; the per-hectare monoterpene emissions are in the span of estimates for other plantation species

A combined microfinance and training intervention can reduce HIV risk behaviour in young female participants.

OBJECTIVE: To assess effects of a combined microfinance and training intervention on HIV risk behavior among young female participants in rural South Africa. DESIGN: : Secondary analysis of quantitative and qualitative data from a cluster randomized trial, the Intervention with Microfinance for AIDS and Gender Equity study. METHODS: Eight villages were pair-matched and randomly allocated to receive the intervention. At baseline and after 2 years, HIV risk behavior was assessed among female participants aged 14-35 years. Their responses were compared with women of the same age and poverty group from control villages. Intervention effects were calculated using adjusted risk ratios employing village level summaries. Qualitative data collected during the study explored participants' responses to the intervention including HIV risk behavior. RESULTS: After 2 years of follow-up, when compared with controls, young participants had higher levels of HIV-related communication (adjusted risk ratio 1.46, 95% confidence interval 1.01-2.12), were more likely to have accessed voluntary counseling and testing (adjusted risk ratio 1.64, 95% confidence interval 1.06-2.56), and less likely to have had unprotected sex at last intercourse with a nonspousal partner (adjusted risk ratio 0.76, 95% confidence interval 0.60-0.96). Qualitative data suggest a greater acceptance of intrahousehold communication about HIV and sexuality. Although women noted challenges associated with acceptance of condoms by men, increased confidence and skills associated with participation in the intervention supported their introduction in sexual relationships. CONCLUSIONS: In addition to impacts on economic well being, women's empowerment and intimate partner violence, interventions addressing the economic and social vulnerability of women may contribute to reductions in HIV risk behavior