This map shows the geographic impact of M. A. Lopes's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by M. A. Lopes with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites M. A. Lopes more than expected).
This network shows the impact of papers produced by M. A. Lopes. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by M. A. Lopes. The network helps show where M. A. Lopes may publish in the future.
Co-authorship network of co-authors of M. A. Lopes
This figure shows the co-authorship network connecting the top 25 collaborators of M. A. Lopes.
A scholar is included among the top collaborators of M. A. Lopes based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with M. A. Lopes. M. A. Lopes is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Lopes, M. A.. (2016). Escolhas estratégicas para o agronegócio brasileiro. LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas). 26(1). 151–154.1 indexed citations
5.
Back, Isabela de Carlos, et al.. (2015). Análise das internações por causas externas não intencionais em menores de 15 anos em Florianópolis, Santa Catarina, Brasil. 14(4). 273–278.1 indexed citations
6.
Lopes, M. A., et al.. (2012). Embrapa's contribution to the development of new plant varieties and their impact on Brazilian agriculture.. SHILAP Revista de lepidopterología.1 indexed citations
7.
Lopes, M. A. & Elísio Contini. (2012). Agricultura, sustentabilidade e tecnologia. Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT). 32(2). 27–34.7 indexed citations
8.
Lopes, M. A., et al.. (2004). Cenários do setor de sementes e estratégia tecnológica. Revista de Política Agrícola. 13(3). 58–72.1 indexed citations
Carneiro, N. P., et al.. (2000). Milho transgênico: melhoria da qualidade nutricional do grão.. LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas).2 indexed citations
Santos, M. X. dos, P. E. de O. Guimarães, Cleso Antônio Patto Pacheco, et al.. (1998). Melhoramento intrapopulacional no Sintético Elite NT para solos pobres em nitrogênio. I. Parâmetros genéticos de produção. Pesquisa Agropecuária Brasileira. 33(1). 55–61.8 indexed citations
13.
Paiva, Luciano Vilela, Maurício de Souza, M. A. Lopes, & Edílson Paiva. (1997). Identificação e isolamento de proteínas exclusivas de plantas com declínio dos citros. Pesquisa Agropecuária Brasileira. 32(5). 559–564.1 indexed citations
Gama, E. E. G. e, et al.. (1995). Combining ability among fifteen early cycle maize populations in Brazil.. LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas). 18(4). 569–577.7 indexed citations
Lopes, M. A., et al.. (1987). Avaliação de populações de milho e seus cruzamentos para tolerância à toxidez de alumínio em solução nutritiva. Pesquisa Agropecuária Brasileira. 22(3). 257–263.14 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.