Results 81 to 90 of about 1,271,296 (255)

The Role of Gene Flow in the Diversification of the Monkey Treefrog Complex Across the South American Dry Diagonal

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Understanding Neotropical megadiversity remains challenging due to fundamental taxonomic issues, including identifying and describing cryptic species and their distribution, and the limited knowledge of key factors driving biological diversification. Such challenges are especially prominent in diverse clades with high levels of cryptic species,
Felipe Camurugi   +10 more
wiley   +1 more source

Nb2CBr2 MXene Monolayer as a Novel Material: A First Principle Study

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 2, February 2026.
Illustration of the monolayer cell, cell replicated in directions a and b, graph of optical absorption and thermodynamic potentials as a function of temperature. Abstract Niobium‐based MXenes show promising properties and applications, but have not yet been sufficiently investigated, especially with halogen surface terminations. This study investigates
Leonardo S. Barbosa   +4 more
wiley   +1 more source

Fitofisionomias e flora [PDF]

open access: yes, 2008
Fotografias de Carlos Terrana.Apresenta descrição da vegetação e da composição florística da Estação Ecológica de Águas Emendadas, Distrito ...
Fagg, Christopher William   +5 more
core  

MONITORAMENTO DAS ÁGUAS SUBTERRÂNEAS DO DISTRITO FEDERAL – DADOS PRELIMINARES

open access: yesRevista Águas Subterrâneas, 2006
A CAESB – Companhia de Saneamento Ambiental do Distrito Federal – vem incrementando ao longo dos últimos anos, a utilização de águas subterrâneas captadas através de poços tubulares profundos destinados ao abastecimento público. A descoberta de aqüíferos
Roberto M. M. dos Santos   +1 more
doaj  

Ley de Maternidad subrogada del Distrito Federal

open access: yesBoletín Mexicano de Derecho Comparado, 2011
هذه القضية ذات أهمية كبيرة لأننا نعيش الآن في عالم أكثر عولمة، حيث ينمو التقدم في العلوم ويوفر الفرص في جميع جوانب الحياة البشرية، وكثير منها لصالحهم ؛ وقد انعكست هذه التطورات بشكل أساسي في مجالات التكنولوجيا والاتصالات والطبية، والتي تشكل بدورها سلوكيات يقوم بها البشر، وبالتالي يجب أن ينظمها القانون.
Adriana HERNÁNDEZ RAMÍREZ   +1 more
openaire   +4 more sources

The Effects of Caffeine on Anxiety Behavior in Healthy Individuals: A Systematic Review of the Literature

open access: yesStress and Health, Volume 42, Issue 1, February 2026.
ABSTRACT To assess available evidence on the association between anxiety and caffeine consumption in healthy individuals. A high‐sensitivity electronic search was performed, as recommended by the Cochrane Handbook, which underwent peer review according to the PRESS Guide, in March 2021 in the following databases: Cochrane Library, MEDLINE via PUBMED ...
Alef Oliveira do Nascimento   +3 more
wiley   +1 more source

Comunidad de aves de la Facultad de Estudios Superiores Zaragoza campus II, UNAM, Ciudad de México

open access: yesHuitzil, 2015
Se documenta la diversidad de aves en la Facultad de Estudios Superiores Zaragoza campus II, Ciudad de México, entre 1998 y 2006. Se llevaron a cabo registros visuales y auditivos de aves mediante el método de trayectos sin estimar distancia.
Jorge E. Ramírez-Albores
doaj   +1 more source

Enunciando Contra-Hegemonias

open access: yesEm Tempo de Histórias, 2020
O texto analisa a narrativa histórica do filme Romance do Vaqueiro Voador, de Manfredo Caldas (2007), que rememora a construção da nova capital sob a perspectiva de trabalhadores que a edificaram.
Cristiane de Assis Portela   +1 more
doaj   +1 more source

Leishmaniose tegumentar americana no Distrito Federal [PDF]

open access: yesRevista da Sociedade Brasileira de Medicina Tropical, 1999
Relatamos aqui 11 casos de leishmaniose tegumentar americana (LTA) em pacientes que residem no DF e que não saíram da sua área durante um tempo que variou de seis meses a dois anos antes do início da doença. Seis dos 11 pacientes, residem na cidade satélite de Planaltina. Todos têm a intradermorreação de Montenegro positiva.
Sampaio, Raimunda Nonata Ribeiro   +1 more
openaire   +4 more sources

Advancing Water Security in the Tropical and Subtropical Regions: An Integrative Topic Modeling Approach

open access: yesWorld Water Policy, Volume 12, Issue 1, February 2026.
ABSTRACT Water security in tropical regions faces escalating pressures from climate change, land‐use shifts, and population growth. We conducted a bibliometric review of 1146 peer‐reviewed articles (1964–2023) on tropical water security. Latent Dirichlet Allocation identified 13 thematic topics and their evolution. Publications rose sharply after 2012,
Karling Fernanda Schuster   +3 more
wiley   +1 more source

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