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Model-based assessment of water, food, and energy trade-Offs in a cascade of multipurpose reservoirs: case study of the Sesan tributary of the Mekong river Полный текст
2015
Räsänen, Timo A. | Joffre, Olivier M. | Someth, P. | Cong Tran Thanh | Keskinen, M. | Kummu, M.
Associations Among Chronic Disease Status, Participation in Federal Nutrition Programs, Food Insecurity, and Sugar-Sweetened Beverage and Water Intake Among Residents of a Health-Disparate Region Полный текст
2015
Davy, Brenda M. | Zoellner, Jamie M. | Waters, Clarice N. | Bailey, Angela N. | Hill, Jennie L.
To determine whether sociodemographic characteristics, food security status, participation in federal nutrition programs (Supplemental Nutrition Assistance Program [SNAP] or Special Supplemental Nutrition Program for Women, Infants, and Children [WIC]), and chronic disease status were associated with adherence to water and sugar-sweetened beverage (SSB) intake recommendations.Cross-sectional, random-digit phone survey with questions from the Behavioral Risk Factor Surveillance System and beverage intake questionnaire.Residents of a medically underserved, rural area.Water and SSB intake.Descriptive statistics, chi-square and 1-way ANOVA, and linear and logistic regression.The sample consisted of 930 respondents (aged 56 ± 17 years; 35% non-white); reported food insecurity and SNAP and WIC participation were 37%, 29%, and 8%, respectively. Prevalent health conditions included overweight/obesity (69%), diabetes (19%), and hypertension (45%). Water recommendations were more likely to be met (72%; mean intake, 31 ± 19 fluid oz) than SSB (41%; mean intake, 246 ± 297 kcal). Food insecurity and SNAP/WIC participation were not associated with meeting recommendations, but those reporting ≥ 1 chronic disease were more likely to meet SSB recommendations (odds ratio, 2.42; P = .02).Odds of achieving SSB but not water recommendations were greater among individuals with a chronic disease. Efforts to communicate beverage recommendations to at-risk groups are needed.
Показать больше [+] Меньше [-]A cross-over study comparing an online versus a paper 7-day food record: focus on total water intake data and participant’s perception of the records Полный текст
2015
Monnerie, B. | Tavoularis, L. G. | Guelinckx, I. | Hebel, P. | Boisvieux, T. | Cousin, A. | Le Bellego, L.
PURPOSE: To compare (1) fluid, food and nutrient intake obtained with a paper versus an online version of a 7-day food record and (2) user’s acceptability of both versions of the food record. METHODS: A cross-over study was carried out in 2010 in France. A total of 246 participants aged 18–60 years reported their food and fluid intake using both versions of the 7-day food record, separated by a 7- to 14-day washout period. To help participants in estimating consumed portions, both versions of the food record were supported by a photographic booklet of standard portions and containers. At the end of the study protocol, participants completed a questionnaire designed to assess the acceptability of the two questionnaires. RESULTS: The reported water intake of fluids was significantly higher with the online version compared with the paper version (respectively 1348 ± 36 and 1219 ± 34 mL/day, p < 0.0001). No difference was found between methods in terms of energy intake and the consumption of most food categories, macro- and micronutrients. Furthermore, 77 % of the participants preferred the online method to the paper version. CONCLUSIONS: Fluid intake, but not food intake, reported with the online 7-day food record was higher in comparison with the paper version. In addition, the online version was preferred by users. In population surveys, the online record is therefore a relevant alternative, and even a preferred alternative in the case of fluid intake, to the paper record.
Показать больше [+] Меньше [-]Synthesis and application of ion-imprinted polymer nanoparticles for the extraction and preconcentration of mercury in water and food samples employing cold vapor atomic absorption spectrometry Полный текст
2015
Roushani, Mahmoud | Abbasi, Shahryar | Khani, Hossein
We describe a nanosized Hg(II)-imprinted polymer that was prepared from methacrylic acid as functional monomer, ethyleneglycol dimethacrylate as cross-linker, 2,2′-azobisisobutyronitrile (AIBN) as radical initiator, 2, 2′-di pyrydyl amine as a specific ligand, and Hg (II) as the template ions by precipitation polymerization method in methanol as the progeny solvent. Batch adsorption experiments were carried out as a function of pH, Hg (II) imprinted polymer amount, adsorption and desorption time, volume, and concentration of eluent. The synthesized polymer particles were characterized physically and morphologically by using infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and scanning electron microscopic techniques. The maximum adsorption capacity of the ion-imprinted and non-imprinted sorbent was 27.96 and 7.89 mg g⁻¹, respectively. Under optimal conditions, the detection limit for mercury was 0.01 μg L⁻¹ and the relative standard deviation was 3.2 % (n = 6) at the 1.00 μg L⁻¹. The procedure was applied to determination of mercury in fish and water samples with satisfactory results.
Показать больше [+] Меньше [-]Las prácticas participativas de los agricultores familiares para la gestión del agua y la soberanía alimentaria en el norte de la provincia de Córdoba - Argentina Полный текст
2015
Ryan, Silvia Laura | Bergamín, Gerardo Antonio | Benítez, Alejandro
La importancia de esta investigación está centrada en la reflexión sobre el desarrollo y el agua, sobre las particularidades de la agricultura familiar y su relación con el fortalecimiento de la soberanía alimentaria y el enfoque de las prácticas de intervención, que incorpore el análisis complejo de una realidad en particular, la producción y reproducción social de la agricultura familiar en la Provincia de Córdoba. Este trabajo se basa en la hipótesis de que las prácticas de intervención y las tecnologías propuestas para que los agricultores familiares accedan al agua para producir y reproducirse socialmente deben responder a un paradigma de reconocimiento y aceptación de las condiciones agroecológicas y dinámicas socioorganizativas a partir de las cuales construir territorios sociales equitativos. Se seleccionaron tres (3) estudios de caso, utilizando técnicas de relevamiento de información secundaria de diversas fuentes y de información primaria como entrevistas a informantes seleccionados y entrevistas en profundidad. De esta primera información primaria se detectan dos casos donde la práctica de gestión del agua surge de un trabajo previo comunitario y ayudo a consolidar la organización. En el restante caso se visualiza una actividad transferencista. | The importance of this research is focused in the reflection on development and water, on the particularities of family farming and its relation to the strengthening of food sovereignty and the approach of intervention practices, incorporating the complex analysis of a particular reality, production and social reproduction of family farming in the province of Córdoba. This work is based on the hypothesis that intervention practices and technologies proposals for family farmers accessing to water to produce and reproduce socially must respond to a paradigm of recognition and acceptance of agro-ecological and socio-organizational dynamics from which build equitable social territories. Three (3) case studies were selected using survey techniques of secondary information from various sources and primary data as interviews with selected informants and interviews. In the first two cases where primary information management practice water comes from a communal previous work and help strengthen the organization are detected. In the remaining case, a transferencista activity is displayed | Eje A6: Desarrollo Rural, Movimientos Sociales, Estado y Agroecología | Facultad de Ciencias Agrarias y Forestales
Показать больше [+] Меньше [-]The impact of changing food choices on the blue water scarcity footprint and greenhouse gas emissions of the British diet: the example of potato, pasta and rice Полный текст
2015
Hess, Tim | Chatterton, Julia | Daccache, Andre | Williams, Adrian
Food production is a major contributor to a country's environmental burden. However, the burdens associated with individual foods vary significantly due to differing agricultural systems and locations, post-harvest storage, manufacturing and transport requirements. Dietary choices can therefore have a significant impact on the overall burdens associated with food consumption. Previous studies have generally considered changes in the proportion of animal-based foods in the diet or changes to a vegetarian, or a vegan diet. Using a life cycle assessment approach and data from published sources supplemented by original analysis, we estimated the blue water scarcity footprint and greenhouse gas emissions associated with the production, manufacture and distribution of three popular starchy carbohydrate foods as consumed in the United Kingdom – British fresh potatoes, Italian dried pasta and Indian dried basmati rice. Although similar to pasta in terms of greenhouse gas emissions per unit carbohydrate, when considered on the basis of typical portion size, potatoes have lower greenhouse gas emissions than pasta or basmati and the blue water scarcity footprint of basmati is two orders of magnitude greater than potatoes or pasta. The increasing preference for pasta and rice and reduction in household purchases of fresh potatoes in the United Kingdom over the period 1981–2010 has resulted in an increase in blue water scarcity footprint and a transfer of burdens from the United Kingdom to Italy and India, however the increased greenhouse gas emissions associated with rice and pasta has been, more or less, compensated by a reduction in emissions associated with purchases of potatoes. This paper has shown that dietary choices within food groups (in this case starchy carbohydrates) have a significant impact on an individual's contribution to greenhouse gas emissions and blue water scarcity footprint. The life cycle assessment approach is useful for understanding where the impacts of dietary choices occur and can inform the supply chain about where efforts should be targeted to reduce those impacts.
Показать больше [+] Меньше [-]Application of 1-(2-pyridylazo)-2-naphthol-modified nanoporous silica as a technique in simultaneous trace monitoring and removal of toxic heavy metals in food and water samples Полный текст
2015
Abolhasani, Jafar | Behbahani, Mohammad
Solid-phase extraction is one the most useful and efficient techniques for sample preparation, purification, cleanup, preconcentration, and determination of heavy metals at trace levels. In this paper, functionalized MCM-48 nanoporous silica with 1-(2-pyridylazo)-2-naphthol was applied for trace determination of copper, lead, cadmium, and nickel in water and seafood samples. The experimental conditions such as pH, sample and eluent flow rate, type, concentration and volume of the eluent, breakthrough volume, and effect of coexisting ions were optimized for efficient solid-phase extraction of trace heavy metals in different water and seafood samples. The content of solutions containing the mentioned heavy metals was determined by flame atomic absorption spectrometry (FAAS), and the limits of detection were 0.3, 0.4, 0.6, and 0.9 ng mL⁻¹ for cadmium, copper, nickel, and lead, respectively. Recoveries and precisions were >98.0 and <4 %, respectively. The adsorption capacity of the modified nanoporous silica was 178 mg g⁻¹ for cadmium, 110 mg g⁻¹ for copper, 98 mg g⁻¹ for nickel, and 210 mg g⁻¹ for lead, respectively. The functionalized MCM-48 nanoporous silica with 1-(2-pyridylazo)-2-naphthol was characterized by thermogravimetry analysis (TGA), differential thermal analysis (DTA), transmission electron microscopy (TEM), Fourier transform infrared spectrometry (FT-IR), X-ray diffraction (XRD), elemental analysis (CHN), and N₂ adsorption surface area measurement.
Показать больше [+] Меньше [-]ПРОБЛЕМА ЖИВЫХ КОРМОВ В АКВАКУЛЬТУРЕ: ПЕРСПЕКТИВНЫЕ ОБЪЕКТЫ В ГИПЕРСОЛЕНЫХ ВОДОЕМАХ КРЫМА | THE PROBLEM OF LIVE FOOD ORGANISMS IN AQUACULTURE: THE PERSPECTIVE OBJECTS IN HYPERSALINE WATER BODIES OF THE CRIMEA Полный текст
2015
Ануфриева, Е. В.
The development of aquaculture is largely inhibited by scarcity of live food for fish larvae. An overview of the inhabitants of Crimean hypersaline lakes, which are promising as live food (Fabrea salina, Brachionus plicatilis, Artemia, Moina salina, Daphnia atkinsoni, Cletocamptus retrogressus, and Arctodiaptomus salinus), is given in this work. | Развитие аквакультуры в значительной степени тормозится дефицитом живых кормов для личинок рыб. Актуальная задача – поиск новых кормовых объектов. Дан их краткий обзор в гиперсоленых озерах Крыма (Fabrea salina, Brachionus plicatilis, Artemia, Moina salina, Daphnia atkinsoni, Cletocamptus retrogressus, Arctodiaptomus salinus).
Показать больше [+] Меньше [-]Proceedings of the Joint GWP-ILC-IWMI Workshop on Responding to the Global Food Security Challenge Through Coordinated Land and Water Governance, Pretoria, South Africa, 15-16 June 2015 Полный текст
2015
Global Water Partnership | International Land Coalition | International Water Management Institute
Proceedings of the Joint GWP-ILC-IWMI Workshop on Responding to the Global Food Security Challenge Through Coordinated Land and Water Governance, Pretoria, South Africa, 15-16 June 2015 Полный текст
2015
Global Water Partnership (GWP) | International Land Coalition (ILC) | International Water Management Institute (IWMI).