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| Registros recuperados: 58 | |
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| Ruel, Marie T.; Bouis, Howarth E.. |
| Because trace minerals are important not only for human nutrition, but for plant nutrition as well, plant breeding holds great promise for making a significant low-cost and sustainable contribution to reducing micronutrient deficiencies in humans, and may have important spinoff effects for increasing farm productivity in developing countries in an environmentally beneficial way. This paper describes ongoing plant breeding research that could increase the intake of bioavailable zinc from food staple crops among vulnerable populations in developing countries. The three most promising plant breeding strategies to achieve this goal are (1) increasing the concentration of zinc in the plant, (2) reducing the amount of phytic acid (a strong inhibitor of zinc... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Human Nutrition; Minerals; Planting Breeding; Crop Production/Industries. |
| Ano: 1997 |
URL: http://purl.umn.edu/97295 |
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| Mobbs, P.M.. |
| The Republic of Equatorial Guinea consisted of a number of islands and islets, which include the volcanic island of Bioko in the Gulf of Guinea; the islands of Corisco, Elobey Chico, Elobey Grande, and Mbañe in Corisco Bay; the volcanic island of Annobón in the South Atlantic Ocean; and the Rio Muni enclave on the African mainland. In 1999 (the last year for which financial data were available), the gross domestic product of Equatorial Guinea was estimated to be about $696 million, and the population was estimated to be 442,700 (World Bank, July 2000, World development indicators database, accessed September 24, 2000, via URL http://www.worldbank.org/data/ countrydata/countrydata.html). The petroleum sector has dominated the country’s economy since 1996. |
| Tipo: Journal Contribution |
Palavras-chave: Minerals. |
| Ano: 1999 |
URL: http://hdl.handle.net/1834/661 |
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| Salt can be considered as the most widespread mineral in Eastern Africa and its recovery from the sea is a comparatively simple process given certain environmental conditions. The location of solar saltworks is controlled by the rainfall regime and the occurrence of suitable impermeable soils. These conditions occur from Ngomeni northwards to the Lamu area. Extensive saltworks have been established at the Gongoni-Fundi Is area and Kurawa. The total area dedicated to salt production is over 5,000 hectares that yield an average of over 170,000 tonnes of salt annually. The method of salt production utilised by the five established companies is very much the same throughout the area. Seawater is introduced into the ponds which are run in series. Slight... |
| Tipo: Book Section |
Palavras-chave: Minerals; Energy sources. |
| Ano: 2000 |
URL: http://hdl.handle.net/1834/412 |
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| Gonçalves,José Francisco de C.; Fernandes,Andreia V.; Oliveira,Antonio Fernando M.; Rodrigues,Lílian F.; Marenco,Ricardo A.. |
| The contents of the main components of the primary metabolism (soluble sugars, starch, proteins, oils, fatty acids) and minerals (P, Ca, Mg, K, Fe, Zn, Mn, Cu) were characterized in seeds of five Brazilian Amazon tree species (Andira parviflora, Bertholletia excelsa, Helicostylis tomentosa, Hymenaea parviflora, and Parkia pendula). Soluble sugar contents were high in P. pendula seeds (14 %), whereas starch predominated in A. parviflora seeds (58.7 %). A. parviflora and H. parviflora seeds were rich in proteins (35.1 % and 32.4 %, respectively). The oil contents ranged from 1.4 % in A. parviflora to 70.7 % in B. excelsa. Only B. excelsa and P. pendula seeds may be considered oilseeds, with 70.7 % and 28.4 % oil, respectively. The fatty acid compositions... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fatty acids; Minerals; Oils; Proteins; Soluble sugars; Starch. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202002000200009 |
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| Mwashote, B.M.. |
| Flame absorption spectrophotometry was used to investigate the concentration and distribution of cadmium and lead in water, sediments and selected fish species in Makupa and Tudor creeks in Mombasa, Kenya between May 1997 and March 1998. The results were compared with those obtained in relatively less anthropogenically influenced areas along the Kenyan coast. The mean concentrations for Pb ranged from not detectable (nd) to 0.012 mg/l, 0.2 to 58.0 mg/kg and nd to 59.3 mg/kg in water, sediment and fish samples respectively. Cadmium concentrations in water were generally below detection limits, while in sediment and fish samples, they ranged from nd to 1.0 mg/kg and nd to 3.7 mg/kg respectively. Overall, Pb and Cd concentrations were low in the water column... |
| Tipo: Journal Contribution |
Palavras-chave: Pollution surveys; Minerals; Environmental pollution; Http://aims.fao.org/aos/agrovoc/c_32981. |
| Ano: 2003 |
URL: http://hdl.handle.net/1834/967 |
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| Anastasenko, G.F.; Krivovichev, V.G.; Golynskaya, O.A.. |
| The Mineralogical Museum of the St.-Petersburg State University is housed in the building of the ‘Twelve Colleges’. It accomodates some of the most ancient mineralogical collections of Russia. The university mineral collection took its origin from a Mineralogical Cabinet of a Teacher’s Seminary, which was established in 1783. J.G. Georgi (1729-1802) was commissioned to collect minerals for the institute and he can be considered the founder of the museum. The history of enlarging and enriching the mineral collection is inextricably related with 19th century celebrities and their private collections. At the beginning of the 19th century, when the Seminary was transformed into a Pedagogical Institute, the collection of the Mineralogical Cabinet included in... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Minerals; Collections; 38.30. |
| Ano: 2004 |
URL: http://www.repository.naturalis.nl/record/215333 |
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| Silva,Hunaldo Oliveira; Fialho,Elias Tadeu; Freitas,Rilke Tadeu Fonseca de; Lima,José Augusto de Freitas; Logato,Priscila Rosa Vieira; Schoulten,Neudi Artemio. |
| It was intended with the present work to verify the effect of phytase on the performance, bone mineralization and content of plasma urea of swine. 80 swine (30 ± 3.1 kg/LW), crossbred (LD x LW) males and females, allocated to a randomized block design (RBD) with four treatments and five replicates. The treatments consisted of a growing swine diet on the basis of corn, soybean meal and defatted rice bran (DRB) supplemented with four levels of phytase (0, 400, 800 and 1200 FTU/kg) The diet was formulated to meet the requirements of growing swine except for available calcium and phosphorus, the levels of which were 0.64 and 0.25%, respectively. The enzyme phytase utilized was Natuphos 5000. Over the experimental period every eight days, blood of two animals... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme; Minerals; Plasma; Urea. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542004000600028 |
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| Rodgers, Trudi; Webster, Stewart. |
| Resource rents represent a return to the community for the exclusive use of resources and therefore are quite distinct from the recovery of governmental regulatory or operating costs. While the current framework for resource rents in Australian primary industries is providing financial benefit for Australian governments, it is uncertain whether the current policy settings are providing an appropriate community return. This paper discusses the theory underpinning resource rents and conducts a multijurisdictional comparison focusing on the minerals and fisheries industries to aid analysis of the role resource rent taxation plays in the existing management of Australian primary industries. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Resource rents; Taxation; Revenue; Minerals; Fisheries; Government; Resource /Energy Economics and Policy. |
| Ano: 2007 |
URL: http://purl.umn.edu/10396 |
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| Santa Cruz, L.; Castro, D.; Sardiñas, O.. |
| Como parte del proyecto de implementación de la dieta macrobiótica en Cuba se valoró la situación de una arcilla italiana, empleada para enriquecer al agua potable con sales minerales, por una cubana similar (bentonita natural de Managua tipo 1). La caracterización minerológica, química y granulométrica de ambas arcillas fue similar. Se estudió el efecto de tres concentraciones de arcilla cubana en agua potable (0,1; 0,5 y 1 %) después de 24 h. Este tratamiento incrementó significativamente las concentraciones de sodio, magnesio y hierro y disminuyó las de calcio, cinc y cobre en el agua; todos los elementos cumplieron con las normas vigentes de agua potable. |
| Tipo: Journal Contribution |
Palavras-chave: Clay minerals; Water; Minerals; Food; Diets; Drinking water. |
| Ano: 2008 |
URL: http://hdl.handle.net/1834/5013 |
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| Pizzolante,CC; Saldanha,ESPB; Laganá,C; Kakimoto,SK; Togashi,CK. |
| A 112-day trial was carried out to evaluate the effect of dietary calcium level and limestone particle size on the egg quality of 288 Hy-Line Brown semi-heavy layers, with 83 weeks of age at the beginning of the experiment. A completely randomized experimental design was applied in a 2x3 factorial arrangement, with two dietary calcium levels (3.5 and 4.0%) e three limestone particle size compositions (100% fine limestone (FL), with 0.185mm; 30% coarse limestone (CL), with 2.83mm, + 70% FL, with 0.185mm; and 50% CL, with 2.83mm, + 50% FL, with 0.185mm), with six replicates of eight birds each. Mean geometric diameter and in-vitro solubility of the limestone sources were, respectively, 0.185mm and 18.7% for the fine limestone, and 2.83mm and 10.5% for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggs; Eggshell quality; Layers; Levels; Minerals. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200002 |
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| Saraiva,Alysson; Donzele,Juarez Lopes; Oliveira,Rita Flávia Miranda de; Abreu,Márvio Lobão Teixeira de; Silva,Francisco Carlos de Oliveira; Santos,Fabrício de Almeida. |
| With the objective to evaluate available phosphorus levels in diets for swine genetically selected for meat deposition, sixty commercial hybrid pigs were used, being 30 castrate males and 30 females, with initial weight of 15.00 ± 0.41 kg, distributed in a completely randomized experimental design, with six treatments, five replications and two animals (1 male and 1 female) per experimental unit. The treatments were composed of a basal diet and other five diets obtained through basal diet supplementation with dicalcium phosphate to obtain six AP levels (0.114; 0.221; 0.328; 0.435; 0.542 and 0.649%). The available phosphorus levels promoted a linear increase in the daily feed intake. Daily weight gain and feed conversion showed a quadratic behavior... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Genotype; Minerals; Nutrition; Requirement. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000200013 |
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| Castro,Emilio Eduardo Cura; Penz Júnior,Antônio Mário; Ribeiro,Andréa Machado Leal; Sbrissia,André Fischer. |
| A trial was carried out to evaluate the performance of female ROSS 308 broilers, from 1 to 21 days of age, submitted to 20% of water restriction (WR) or ad libitum water and four different sodium levels by adding NaCl to the drinking water (0, 150, 300, or 450 ppm) from 1 to 7 days of age. A control group, with four replications (rep), housed one day before the beginning of the experiment, was used as reference for WR calculation. Two commercial diets where fed from 1 to 7 days and from 8 to 21 days to all birds. The chicks were raised in battery cages. A randomized complete design, in a 2 × 4 factorial arrangement, with four replications/treatment and 14 birds/replicate, was applied. Feed intake (FI), weight gain (WG) and feed conversion ratio (FCR) in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Compensatory growth; Minerals; Water. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001100014 |
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| Kleemann, Geisa Karine; UNESP; Barros, Margarida Maria; UNESP; Pezzato, Luiz Edivaldo; UNESP. |
| Determinou-se a composição química dos farelos de algodão 28,0; 38,0 e 46,0% de proteína bruta e os coeficientes de digestibilidade aparente (CDA) pela tilápia do Nilo da matéria seca, proteína, aminoácidos, energia, lipídeo e minerais. Os CDA foram determinados, usando-se dieta-referência purificada, contendo 0,1% do indicador óxido de crômio-III. As rações-teste continham 60,0% da dieta-referência e 40,0% dos alimentos em estudo. Os resultados mostraram diferença (p < 0,05) entre os CDA dos nutrientes dos farelos de algodão. Os CDA dos três farelos de algodão foram: matéria seca = 53,45 a 54,32%; proteína = 71,56 a 74,81%; energia = 53,80 a 58,60%; lipídeo = 85,37 a 89,11%; fósforo = 33,75 a 34,50%; cálcio = 41,21 a 43,75%; ferro = 62,02 a 79,85%;... |
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Palavras-chave: 5 5.04.00.00-2 Zootecnia aminoácidos; Digestibilidade; Energia; Peixe; Minerais; Proteína digestível 5 5.04.00.00-2 Zootecnia amino acids; Digestibility; Energy; Fish; Minerals; Protein availability. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/505 |
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| Registros recuperados: 58 | |
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