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Registros recuperados: 2.599
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150 jaar Rijksherbarium en 25 jaar afdeling Nederlandse Flora Naturalis
Mennema, J..
The author gives a short historical survey of 150 years Rijksherbarium and makes mention of the current research, done by the 25 scientists of the institute. Furthermore he pays attention to the 25 years of existence of the department for the Netherlands (and European) flora, which was the subject of a separate paper in English (MENNEMA, 1979).
Tipo: Article / Letter to the editor
Ano: 1979 URL: http://www.repository.naturalis.nl/record/526818
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1978 el nuevo campesinado ante el fraude Buscador Latinoamericano
Carmen Alcoreza; Javier Albo.; Alcoreza, Carmen.
Tipo: Text Palavras-chave: ELECCIONES; BOLIVIA; CAMPESINOS; PODER.
Ano: 1979 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=3728&tab=opac&oai:flacso.org.ec:3728
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1978 OATS SURVEY REPORT AgEcon
Welsch, Delane E.; Stuthman, Deon; Showman, Alan.
A mail survey was conducted in 1977 of farmers who were thought to be oats producers, using names obtained from several lists. The purpose of the 1977 mail survey was to obtain answers to the following questions: (1) What kind of farmer grows oats, (2) Where does he grow them, (3)Why does he grow them, (4) How does he produce them? Answers to these questions should enable the breeding program and the Extension Program at the University of Minnesota to better address the problems of oat production and thus maintain, or hopefully improve the relative competitive ability of oats as a crop in Minnesota.
Tipo: Working or Discussion Paper Palavras-chave: Crop Production/Industries.
Ano: 1979 URL: http://purl.umn.edu/13886
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A catalogue of the Coelenterate type specimens of the Zoological Museum of Amsterdam. IV. Gorgonacea, Actiniaria, Scleractinia Naturalis
Soest, R.W.M. van.
This final part of the Coelenterate type catalogue lists 274 nominal types (183 Gorgonacea, 9 Actiniaria and 82 Scleractinia). Six not previously depicted types are represented by photographic illustrations of their habit. Furthermore lists are provided of schizotypes, i.e. fragments of types housed in other musea donated at some time to the Zoological Museum of Amsterdam, and of missing types, i.e. types, which should be in the ZMA but were found missing in a recent survey of the collections.
Tipo: Article / Letter to the editor
Ano: 1979 URL: http://www.repository.naturalis.nl/record/505117
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A cause in search of its effect, or what political culture explain? Buscador Latinoamericano
por David J. Elkins; Richard E.B. Simeon; Elkins, David J..
Tipo: InteractiveResource
Ano: 1979 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=15705&tab=opac&oai:flacso.org.ec:15705
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A character analysis of the species synergus Hartig, section II (Mayr, 1872) (Hymenoptera, Cynipidae) Naturalis
Wiebes - Rijks, A.A..
A survey is given of the characters used for the differentiation of the species of Synergus Hartig, classified with section II of Mayr. Special attention is given to the phenology of the species, for each of which the life-cycle is schematized, with differentiation in spring- and summer-generation. Two forms, provisionally indicated A and B, could not satisfactorily be identified with any of the known species. Sp. В is a common inquiline of oak-apples; biological observations were made on the larvae. Synergus mutabilis Deitmer, 1924, is synonymized with Synergus albipes Hartig, 1841.
Tipo: Article / Letter to the editor Palavras-chave: 42.75.
Ano: 1979 URL: http://www.repository.naturalis.nl/record/317907
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A cheek list and host plant index of whiteflies from Taiwan Taiwan Agricultural Research Institute
Chia-chu Tao; 陶家駒.
[[abstract]]A check list and host plant index of whiteflies (Homoptera : Aleyrodidae) from Taiwan were prepared. It includes 2 subfamilies, 30 genera and 125 species in total. More localities and host plant records were added to the most species covered in Mound and Haley’s Catalogue.
Palavras-chave: [[classification]]5.
Ano: 1979
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A comparative approach to policy analysis health care policy in four notions Buscador Latinoamericano
Howard M. Leichter; M. Leichter, Howard.
Tipo: Text Palavras-chave: ALEMANIA; RUSIA.
Ano: 1979 URL: http://www.flacso.org.ec/biblio/shared/biblio_view.php?bibid=1628&tab=opac&oai:flacso.org.ec:1628
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A comparison between sea-surface temperature-measurements from satellite noaa4 and from airborne radiometer aries ArchiMer
Albuisson, M; Pontier, L; Wald, L.
Measurements of sea surface temperatures (Sst) in the Gulf of Lions, obtained by the satellite "Noaa 4" sensor Vhrr and by the airborne radiometer "Aries", are presented and compared. The results reveal the reliability of the Vhrr data in the range 16-20. SOC, the degree of accuracy being within O. 5°C of the relative temperatures, despite a malfunctionning of the "Noaa 4" Vhrr.
Tipo: Text Palavras-chave: Températures de surface; Télédétection; Sea surface temperatures; Remote sensing.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00323/43432/43082.pdf
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A COMPARISON OF ALTERNATIVE PROCEDURES FOR CALCULATING THE RATE OF RETURN TO AGRICULTURAL RESEARCH USING THE PRODUCTION FUNCTION APPROACH AgEcon
Davis, Jeffrey S..
The aim of this paper is to test whether the marginal internal rate of return (MIRR) to research and extension estimates are sensitive to the estimation procedure used to find them. To achieve this, a summary of the previously used estimation procedures is made. Following this a cross section aggregate production function estimate is developed for the U.S. in 1964. The parameter estimates from this model are used to calculate the MIRR's using the different estimation procedures.
Tipo: Working or Discussion Paper Palavras-chave: Research and Development/Tech Change/Emerging Technologies.
Ano: 1979 URL: http://purl.umn.edu/13673
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A COMPARISON OF DEPRECIATION METHODS UNDER CURRENT COST ACCOUNTING AgEcon
Davey, L.E..
In New Zealand the Richardson Report has recommended to government the adoption of a form of inflation accounting known as Current Cost Accounting (CCA). This paper reports research carried out to determine which of the traditional historical cost depreciation methods used in farm accounting might be most appropriate when adapted to a current cost basis. The current cost depreciation methods are compared on the basis of their ability to predict accurately actual replacement values for a survey sample of farm tractors and headers. The resultant measures of depreciation are compared with those currently allowable under New Zealand taxation laws, and the proposition that investment allowances on purchases of new machinery offset the inadequacies of historical...
Tipo: Journal Article Palavras-chave: Agricultural Finance.
Ano: 1979 URL: http://purl.umn.edu/22600
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A cultura do arroz em Rondônia. Infoteca-e
RAPOSO, J. A. de A..
Procurou-se reunir informacoes iniciais sobre o arroz em Rondonia, atraves de observacoes proprias e informacoes colhidas entre os colonos da regiao. Alguns conceitos sao emitidos, de modo empirico, "in loco"no dia a dia. Apresenta o sistema de cultivo em uso e aspectos relativos a comercializadao do produto.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Arroz; Oryza sativa; Brasil; Rondonia; Rice; Brazil.
Ano: 1979 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/697972
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A cultura do trigo nas varzeas de Minas Gerais: possibilidades e dificuldades. Infoteca-e
SILVA, A.R. da; ANDRADE, J.M.V. de..
1979
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Trigo; Cultivo; Varzea; Triticum aestivum; Cerrado; Minas Gerais; Brasil; Wheats; Brazil; Flood plains; Cultivation.
Ano: 1979 URL: http://www.infoteca.cnptia.embrapa.br/handle/doc/549423
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A Dynamic Programming Model for On-Farm Decision Making in a Drought AgEcon
Toft, H.I.; O'Hanlon, P.W..
The model, which is based on dynamic programming, enables identification of the sequence of actions in a drought which will lead to the minimum expected cost subject to constraints. The model has been prepared as a tool which may be used to assist graziers to make decisions in a drought. The constraints consist of an upper limit on the number of a particular type of livestock which may be agisted (or droved) in a drought, an upper limit on the number sold and an upper limit on cash outlay. Actions assumed available to the grazier are sale of livestock, agistment (or droving), and supplementary feeding (or allowing mortality).
Tipo: Journal Article Palavras-chave: Farm Management.
Ano: 1979 URL: http://purl.umn.edu/12550
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A FARMER SURVEY AND VILLAGE COMPARISON TO EVALUATE IRRIGATION IMPROVEMENT IN SAMBALPUR, INDIA AgEcon
Easter, K. William.
Tipo: Working or Discussion Paper Palavras-chave: Farm Management.
Ano: 1979 URL: http://purl.umn.edu/13279
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A informação abrindo os caminhos da difusão. Repositório Alice
LUZ, M. C. P. da; SILVA, J. de S..
Justificativa; Apresentação; Sugestões extraídas do I Encontro de Bibliotecários do Sistema Embrapa Nordeste, ocorrido no período de 23 a 25 de outubro de 1979, no CPATSA. Objetivos: Apresentação da programação de pesquisa 1980-1981 das Unidades de Pesquisa do Sistema Embrapa, para o Trópico Semi-Árido, visando um trabalho integrado de informações; Discutir, analisar e caracterizar um Modelo de Integração da Informação entre SID's das Unidades do Sistema e desses com os respectivos setores de Instituições ligadas ao Setor Agropecuário do Nordeste.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Difusão; Evento; DID; Encontro de Bibliotecários; Embrapa; Biblioteca; Informação; Library.
Ano: 1979 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/160948
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A informação abrindo os caminhos da difusão. Infoteca-e
LUZ, M. C. P. da; SILVA, J. de S..
Justificativa; Apresentação; Sugestões extraidas do encontro.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) Palavras-chave: Difusão; Evento; Biblioteca; Informação; Library.
Ano: 1979 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/160948
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A LOOK AT EMERGING ECONOMIC AND POLICY ISSUES CONFRONTING SOUTHERN AGRICULTURE IN THE 1980S AgEcon
Breimyer, Harold F..
Tipo: Journal Article Palavras-chave: Teaching/Communication/Extension/Profession.
Ano: 1979 URL: http://purl.umn.edu/29560
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A LOOK AT MAJOR EVENTS IMPACTING PRODUCTIVITY AND UNCERTAINTY IN SOUTHERN AGRICULTURE DURING THE 1970'S AgEcon
Rudd, Robert W..
Tipo: Journal Article Palavras-chave: Productivity Analysis; Risk and Uncertainty.
Ano: 1979 URL: http://purl.umn.edu/29548
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A MATRIX OF DEMAND ELASTICITIES FOR FRESH FRUIT AgEcon
Price, David W.; Mittelhammer, Ronald C..
A matrix of direct, cross and income demand elasticities at farm level for 14 fresh fruits was estimated using the mixed estimation technique. Prior estimates were derived from past research and application of the symmetry relation, cross induction and subjective judgment. There were no statistically significant conflicts between the sample and prior information. Even though estimation efficiency increased with the mixed technique, only a limited number of cross elasticities could be estimated.
Tipo: Journal Article Palavras-chave: Demand and Price Analysis.
Ano: 1979 URL: http://purl.umn.edu/32427
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