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Registros recuperados: 6.155
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NORTH DAKOTA LAND VALUATION MODEL AgEcon
Aakre, Dwight G.; Saxowsky, David M.; Vreugdenhil, Harvey G..
North Dakota agricultural land is valued for property tax purposes as the capitalized value of the landowner's share of gross revenue. This paper describes the data sources, assumptions, and current issues relative to operating the model. Note: Machine readable file does not include the 4 appendix pages-- contact authors for more information.
Tipo: Working or Discussion Paper Palavras-chave: Agricultural land; Cropland; Tax; Assessed value; Valuation; Capitalization; Land value Note; Land Economics/Use.
Ano: 1997 URL: http://purl.umn.edu/23083
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Nieuwe en zeldzame vliegen voor de Nederlandse fauna (Diptera) Naturalis
Aartsen, B. van.
New and rare flies for the Dutch fauna (Diptera) In this paper an overview is given of captures of rare and interesting Diptera, belonging to different families, mainly from the years 19941996. In total 46 species are presented, of which 13 are new to the Dutch fauna (marked with an *), viz.: Spania nigra Meigen, Philipomyia aprica (Meigen), Acrocera trigramma Loew, Paracrocera manevali Séguy, Empis nigritarsis Meigen, Empis praevia Collin, Chrysogaster rondanii Maibach & Goeldlin de Tiefenau, Pipizella zeneggenensis (Goeldlin de Tiefenau), Leopoldius brevirostris (Germar), Leopoldius coronatus (Rondani), Myopa morio Meigen, Tephritis conura (Loew), Stomorhina lunata (Fabricius).
Tipo: Article / Letter to the editor Palavras-chave: Insecta; Diptera; Nederland; Nieuwe soorten; 42.75.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/317388
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Conservation Tillage NWISRL
Aase, J. Kristian.
Tipo: Book Section Palavras-chave: Tillage; Mass Import - autoclassified (may be erroneous).
Ano: 1997 URL: http://eprints.nwisrl.ars.usda.gov/797/1/951.pdf
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Hayland conversion to wheat production in semiarid eastern Montana: tillage, yield and hay production comparisons NWISRL
Aase, J.K.; Schaefer, G.M.; Pikul Jr, J.L..
Tipo: Article Palavras-chave: Small grain; Tillage; Mass Import - autoclassified (may be erroneous).
Ano: 1997 URL: http://eprints.nwisrl.ars.usda.gov/693/1/961.pdf
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Cinétique et production de deux moulières naturelles de l'Est algérois. Influence des facteurs thermiques et anthropiques ArchiMer
Abadaboudjema, Ym; Dauvin, Jean-claude.
A long-term survey of two mussel populations from two natural mussel beds, Bordj El Kiffan and Boudouaou, was carried out from the end of 1984 to the beginning of 1991. Samples had been also collected from 1978-1979 then from 1992-1993, but only from the first of these. Maximal densities were higher than 10,000 ind. m(-2), due to the spring and summer heavy spatfall. At Bordj El Kiffan, densities of M. galloprovincialis were 50 times more important than those of P. perna. At Boudouaou, the abundance of P. perna was 1.7 times higher than that of M. galloprovincialis. From 1986 to 1988, the mean annual biomass in dry weight of tissue including ash was higher for P. perna at Boudouaou (0.886 kg. m(-2)) than at Bordj El Kiffan (0.486 kg. m(-2)). For M....
Tipo: Text Palavras-chave: Mytilus galloprovincialis; Perna perna; Long term; Production; Algerian coast.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00093/20393/18060.pdf
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Obtencao e tratamento analitico de dados para organizar colecao nuclear de milho. Infoteca-e
ABADIE, T.; MAGALHAES, J.R.; CORDEIRO, C.M.T.; PARENTONI, S.N.; ANDRADE, R.V. de..
1997
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Milho; Colecao; Nuclear; Organizacao; Estatistica.
Ano: 1997 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/176221
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International study on <i>Artemia</i>: 55. Cyst membrane protein composition as a discriminant character in the genus <i>Artemia</i> OMA
Abatzopoulos, T.J.; Triantaphyllidis, G.; Beardmore, J.A.; Sorgeloos, P..
Isolated embryonic membranes (i.e. the outer cuticular membrane, the fibrous layer, the inner cuticular membrane and the hatching membrane) and homogenates of incubated, decapsulated cysts of 16 populations from five <i>Artemia</i> species (Crustacea, Anostraca) were examined by sodium dodecyl-sulphate polyacrylamide gel electrophoresis. Characteristic differences in major polypeptides between 45 and 205 kD were seen. These differences might be used as markers for identification of different <i>Artemia</i> species. The validity of this approach in characterizing <i>Artemia</i> populations is discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemia.
Ano: 1997 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2920
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POLITICS AND MARKETS IN THE ARTICULATION OF PREFERENCES FOR ATTRIBUTES OF THE RAPIDLY CHANGING FOOD AND AGRICULTURAL SECTORS: FRAMING THE ISSUES AgEcon
Abdalla, Charles W.; Shaffer, James D..
Industrialization of the food and agricultural sectors changes the pattern of external effects. Participants helped or harmed in the process attempt to influence outcomes through markets and politics. Decisions about property rights and boundaries determine benefits and burdens and the relative cost of animal agriculture in different jurisdictions. Prescriptions to redefine property rights are influenced by selective perception of rights to share in the benefits and be protected from costs. Political choices about the appropriate jurisdiction (state versus local) for addressing environmental and nuisance effects of animal agriculture affect whose preferences count and will influence the development of these sectors.
Tipo: Journal Article Palavras-chave: Animal agriculture; Externalities; Industrialization; Institutions; Jurisdictional boundaries; Regulation; State versus local policy; Environment; Political Economy.
Ano: 1997 URL: http://purl.umn.edu/15530
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Les agricultures du Sud face aux changements biotechnologiques IRD
Abdesselem, F..
L'agriculture est ajourd'hui profondément bouleversée par la nouvelle donne des échanges internationaux et par des conditions de production scientifiques et technologiques beaucoup plus concurrentielles. le nouveau régime de "privatisation de la science", particulièrement perceptible au niveau des biotechnologies agricoles, modifie progressivement le rôle de la recherche agricole dans les pays du Tiers-Monde, celui de l'Etat et la nature de la coopération internationale. Les pays en développement pourront-ils cependant bénéficier de ces mutations en répondant à la fois à l'objectif interne de sécurité alimentaire et à l'objectif externe d'adaptation au marché mondial ? Quels sont les coûts-avantages de l'adoption des différentes biotechnologies pour les...
Tipo: Text Palavras-chave: RECHERCHE AGRONOMIQUE; BIOTECHNOLOGIE; INNOVATION; DEVELOPPEMENT RURAL; REVOLUTION VERTE; COOPERATION INTERNATIONALE; SECTEUR PRIVE; SECTEUR PUBLIC.
Ano: 1997 URL: http://www.documentation.ird.fr/hor/fdi:010011939
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Ngamdo : a community's thirst for water IRD
Abdu, S..
Nous nous proposons dans cette communication d'évoquer une pratique rituelle chez le groupe kwami au nord du Nigéria. Il s'agit de la cérémonie de ngamdo, à laquelle la communauté fait appel pour pallier le manque de pluie, vu que l'agriculture y constitue l'activité économique la plus importante. Dans la première partie, nous relevons les personnages-clés, aussi bien que les gestes et les actes qui constituent le ngamdo, tout en mettant en valeur son aspect spirituel. Nous évoquons par la suite les menaces présentes, notamment l'influence islamique et la modernisation, qui pèsent sur ce rite. Cependant, nous avons l'intention de soulever, dans la conclusion, comment l'impact d'un renouveau culturel chez les Kwami se transforme en un défi devant ces mêmes...
Tipo: Text Palavras-chave: EAU; PLUIE; MYTHE; CROYANCE; RITUEL; CEREMONIE; MAGIE; SYSTEME DE REPRESENTATIONS; TRADITION ORALE; SOCIETE TRADITIONNELLE; OCCIDENTALISATION; ISLAM.
Ano: 1997 URL: http://www.documentation.ird.fr/hor/fdi:010012377
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Mouvement associatif libanais en France et solidarité avec le territoire d'origine IRD
Abdulkarim, A..
Tipo: Text Palavras-chave: ANTHROPOLOGIE HISTORIQUE; DIASPORA; VIE ASSOCIATIVE; GROUPE ETHNIQUE; IMMIGRATION; CHRISTIANISME; FAMILLE; IDENTITE CULTURELLE; ENTRAIDE; RELATIONS BILATERALES; SOLIDARITE.
Ano: 1997 URL: http://www.documentation.ird.fr/hor/fdi:010014865-45
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La femme mafa et l'arbre IRD
Abéga, S.C..
Les femmes mafa ne plantent pas d'arbres. Quand cela se produit, le groupe social réagit souvent négativement. Cela tient d'une part à l'attachement des hommes à leur terre, mais aussi aux structures matrimoniales, à l'instabilité féminine et aux règles successorales. Finalement, on découvre qu'il y a une opposition structurale entre la femme mafa et l'arbre, qui explique la censure des hommes. (Résumé d'auteur)
Tipo: Text Palavras-chave: ARBRE; ARBORICULTURE; INTERDIT; RELATION DE GENRE; DIVISION SEXUELLE DES TACHES; ROLE DES FEMMES; MOBILITE; PROPRIETE FONCIERE; DROIT COUTUMIER; FILIATION; SYSTEME MATRIMONIAL; PRATIQUE SOCIALE; SOCIETE TRADITIONNELLE.
Ano: 1997 URL: http://www.documentation.ird.fr/hor/fdi:010012409
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Los territorios del cuajipal frontera y sociedad entre Nicaragua y Costa Rica Buscador Latinoamericano
Abelardo Morales; Morales, Abelardo.
Tipo: Text Palavras-chave: COSTA RICA; NICARAGUA.
Ano: 1997 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=5880&tab=opac&oai:flacso.org.ec:5880
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Molecular mimicry between cardiac myosin and Trypanosoma cruzi antigen B13: identification of a B13-driven human T cell clone that recognizes cardiac myosin BJMBR
Abel,L.C.J.; Kalil,J.; Cunha-Neto,E..
Previous reports from our group have demonstrated the association of molecular mimicry between cardiac myosin and the immunodominant Trypanosoma cruzi protein B13 with chronic Chagas' disease cardiomyopathy at both the antibody and heart-infiltrating T cell level. At the peripheral blood level, we observed no difference in primary proliferative responses to T. cruzi B13 protein between chronic Chagas' cardiopathy patients, asymptomatic chagasics and normal individuals. In the present study, we investigated whether T cells sensitized by T. cruzi B13 protein respond to cardiac myosin. T cell clones generated from a B13-stimulated T cell line obtained from peripheral blood of a B13-responsive normal donor were tested for proliferation against B13 protein and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Molecular mimicry; Crossreactive T cells; Cardiac myosin; Trypanosoma cruzi; Chagas' disease.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997001100007
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UNCERTAINTY AND THE REGULATION OF NITRATE POLLUTION FROM AGRICULTURE AgEcon
Abrahams, Nii Adote; Shortle, James S..
A simulation of U.S. corn production compares four environmental policies for controlling agricultural nitrate pollution. Public uncertainty about key economic parameters are considered. Results indicate that policy choice is sensitive to commodity programs and the public information structure. Agricultural research benefits are also sensitive to agricultural environmental policy choices.
Tipo: Conference Paper or Presentation Palavras-chave: Environmental policy; Nonpoint pollution; Uncertainty; Value of information; Environmental Economics and Policy.
Ano: 1997 URL: http://purl.umn.edu/21027
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Análise das principais espécies de Scolytidae coletadas em floresta primária no estado do Amazonas Anais da SEB
Abreu,Raimunda L. S.; Fonseca,Cláudio R. V.; Marques,Eli N..
Em área de floresta primária da Reserva Florestal Adolpho Ducke, foi feito o levantamento da ocorrência de insetos da família Scolytidae (Coleoptera), utilizando-se as armadilhas Escolitídeo/Curitiba e Marques/Carrano/Abreu, instaladas em alturas de 1m; 3 m; 5 m; 7,5 m e 10 m. Os dados de coleta foram avaliados quantitativa e qualitativamente. Dos 7.974 escolitídeos coletados, 4.131 (51,8%) o foram com a armadilha Escolitídeo/Curitíba e 3.843 (48,2 %) com a Marques/Carrano. Os dados revelam a existência de 14 gêneros e 168 espécies. O gênero Xyleborus foi responsável por mais de 50% das coletas e as principais espécies capturadas foram: Xyleborus affinis Eichhoff, que predominou durante o período do experimento, Xyleborus sp1, Premnobius cavipennis...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Insecta; Coleoptera; Levantamento; Mata nativa; Armadilha de etanol.
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80591997000300016
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Molecular cloning of exons II and III of the a-globin major gene from Odontophrynus americanus 2n and 4n (Amphibia, Anura) Braz. J. Genet.
Acedo,Maria Dolores P.; Paranhos-Baccalà,Gláucia; Denoya,Claudio D.; Ruiz,Itamar R.G..
The <FONT FACE="Symbol">a</font>-globin major genes from diploid and tetraploid Odontophrynus americanus were studied using PCR-based technology. The cloned and sequenced amplified fragments were shown to contain most of the exon II sequences as well as the whole exon III sequence of the <FONT FACE="Symbol">a</font>-globin gene. Unexpectedly, intron 2 was entirely absent in the amplified fragments of both 2n and 4n origin. High conservation was observed among the obtained sequences when compared to corresponding sequences from human and Xenopus laevis origin. The possibility that these sequences might be pseudogenes is raised
Tipo: Info:eu-repo/semantics/article
Ano: 1997 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000400009
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NOTAS SOBRE LOS PECES DE LA FAMILIA SCORPAENIDAE (PISCES: SCORPAENIFORMES) DEL CARIBE CONTINENTAL COLOMBIANO, INCLUYENDO UN NUEVO REGISTRO Boletín de Investigaciones
Acero P.,Arturo; Navas S.,Gabriel R..
Quince especies de la familia Scorpaenidae, incluidas en cuatro géneros (Neomerinthe, Pontinus, Scorpaena y Scorpaenodes), se conocen del Caribe continental colombiano. Los escorpénidos caribeños se pueden separar en dos grupos ecológicos, los de fondos blandos (Scorpaena calcarata es la especie más frecuente en Colombia) y los de áreas arrecifales (Scorpaena piumierí, Scorpaena albifimbría y Scorpaenodes caribbaeus son las más frecuentes en aguas colombianas). Se destaca el registro de Pontinus rathbuni por primera vez para las costas colombianas a partir de numerosos ejemplares colectados al arrastre por debajo de 38 m en la región de Cartagena. Aparentemente, P. rathbuni y S. calcarata presentan dos poblaciones, una de las costas norteamericanas y otra...
Tipo: Journal article
Ano: 1997 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97611997000100005
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Revision of the Haliday collection of Braconidae (Hymenoptera) Naturalis
Achterberg, C. van.
The type-series of the taxa of the family Braconidae described by A.H. Haliday (1806-1870) are reviewed, 99 lectotypes are designated, 24 new synonyms and 22 new combinations are given. Lectotypes are designated for the following nominal species: Alysia (Dacnusa) abdita Haliday, 1839; Opius (Opius) aethiops Haliday, 1836; Microgaster albipennis Haliday, 1834; Alysia (Alysia) ancilla Haliday, 1838; Alysia (Alysia) angustula Haliday, 1838; Microgaster annularis Haliday, 1834; Leiophron antennalis Hincks, 1943; Leiophron apicalis Haliday, 1833; Microgaster arenarius Haliday, 1834; Colastes braconius Haliday, 1833; Opius (Opius) caesus Haliday, 1836; Microgaster callidus Haliday, 1834; Microgaster candidatus Haliday, 1834; Opius (Opius) celsus Haliday, 1836;...
Tipo: Article / Letter to the editor Palavras-chave: Braconidae; Adeliinae; Agathidinae; Alysiinae; Aphidiinae; Blacinae; Cenocoeliinae; Charmontinae; Doryctinae; Euphorinae; Exothecinae; Gnamptodontinae; Helconinae; Macrocentrinae; Miracinae; Microgastrinae; Opiinae; Pambolinae; Rhysipolinae; Rhyssalinae; Rogadinae; Palaearctic; Neotropical; Australian.; 42.75.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/317554
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Xyeloblacus gen. nov. (Hymenoptera: Braconidae: Blacinae) parasitoid of Xyelinae (Xyelidae: Hymenoptera) Naturalis
Achterberg, C. van; Altenhofer, E..
The new genus Xyeloblacus (type species: Xyeloblacus leucobasis spec, nov.) is described and illustrated; it belongs to a new tribe (Xyeloblacini van Achterberg), and two Palaearctic species are included. The type species has been reared from two Xyela spp. ("Symphyta"; Xyelidae; Xyelinae) in Austria.
Tipo: Article / Letter to the editor Palavras-chave: Hymenoptera; Braconidae; Blacinae; Xyeloblacus; Palaearctic; Austria; Poland; Japan; Key; 42.75.
Ano: 1997 URL: http://www.repository.naturalis.nl/record/318162
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