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  1. 4481
    “…The role of anonymous online marketplaces and forums that resemble eBay or Amazon, where anyone can post, browse, and purchase opioid commodities, has become increasingly important in opioid trading. …”
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    Demystifying the Dark Web Opioid Trade: Content Analysis on Anonymous Market Listings and Forum Posts
  2. 4482
    por Wettstein, Dominik J., Boes, Stefan
    Publicado 2021
    “…METHODS: An online experiment was conducted in two separate runs (n = 202, n = 404) on the Amazon Mechanical Turk (MTurk) platform. Populations were split into two (run one) and four (run two) equally sized treatment groups for hypothetical reimbursement decisions. …”
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    Assessing social preferences in reimbursement negotiations for new Pharmaceuticals in Oncology: an experimental design to analyse willingness to pay and willingness to accept
  3. 4483
    “…After protein expression and purification, we evaluated the breadth of the immune responses derived from malaria-exposed individuals from the Amazon region. From 611 serum samples of malaria-exposed individuals, 53.68% of them reacted against the PvAMA-1 Belem through ELISA. …”
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    Antibodies Against the Plasmodium vivax Apical Membrane Antigen 1 From the Belem Strain Share Common Epitopes Among Other Worldwide Variants
  4. 4484
    “…We used a metagenomic approach and datasets with well-characterized metadata to investigate ARG types and amounts in soil DNA of three native ecosystems: Alaskan tundra, US Midwestern prairie, and Amazon rainforest, as well as the effect of conversion of the latter two to agriculture and pasture, respectively. …”
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    Metagenomic analysis reveals the shared and distinct features of the soil resistome across tundra, temperate prairie, and tropical ecosystems
  5. 4485
    “…The emerging hotspots analysis detected a high spatial and temporal variability of hotspots inside the main cluster area, diminishing hotspots in eastern Amazon and permanent, emerging, and new hotspots in the states of Amapá and parts of Pará, Roraima, Acre and Mato Grosso. …”
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    Spatial–temporal pattern of cutaneous leishmaniasis in Brazil
  6. 4486
    “…The syndemic nature of COVID-19 in the Amazon region needs differential policies and urgent solutions to control the ongoing pandemic.…”
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    SARS-CoV-2 seroprevalence and associated factors in Manaus, Brazil: baseline results from the DETECTCoV-19 cohort study
  7. 4487
    “…Military personnel serving in the Amazon region could serve as sentinels to strengthen global infectious disease surveillance, particularly in remote areas. …”
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    Prevalence of arbovirus antibodies in young healthy adult population in Brazil
  8. 4488
    “…The present study aims to investigate the prevalence of anti-SARS-CoV-2 IgG antibodies in the population of Venezuelan indigenous Warao refugees residing in private and public shelters in the city of Belem, capital of Para State, in the Brazilian Amazon. METHODS: One hundred one individuals of both sexes (43 men and 58 women) with ages varying from 18 to 77 years (average of 36 years) were investigated. …”
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    Migration in times of pandemic: SARS-CoV-2 infection among the Warao indigenous refugees in Belém, Pará, Amazonia, Brazil
  9. 4489
    “…Following data collection, we randomly drew 10 participants to receive a $50 Amazon giftcard. POPULATION STUDIED: We recruited a sample of nurses from 36 states and the District of Columbia. …”
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    The Psychosocial Impact of COVID‐19 on Registered Nurses
  10. 4490
    por Yin, Rong, Law, Katherine, Neyens, David
    Publicado 2021
    “…METHODS: An internet-based survey study was conducted using Amazon Mechanical Turk. All the participants were adults in the United States who used patient portals. …”
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    Examining How Internet Users Trust and Access Electronic Health Record Patient Portals: Survey Study
  11. 4491
    “…Very similar δ(13)C(CH(4)) signatures were measured over the Amazonian wetlands of NE Bolivia (around −59‰) and the overall δ(13)C(CH(4)) signature from outer tropical wetlands in the southern Upper Congo and Upper Amazon drainage plotted together was −59 ± 2‰. These results were more negative than expected. …”
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    Isotopic signatures of methane emissions from tropical fires, agriculture and wetlands: the MOYA and ZWAMPS flights
  12. 4492
    “…METHODS: Geolocated Twitter posts from 2015 were collected using the Twitter public application programming interface in combination with cloud computing services on Amazon Web Services. Posts were filtered for tobacco products and behavior-related keywords. …”
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    Campus Smoking Policies and Smoking-Related Twitter Posts Originating From California Public Universities: Retrospective Study
  13. 4493
    “…The Congo River Basin, located in central Africa, is the second-largest river basin in the world, after the Amazon. It has a drainage area of approximately 3.7 M km(2) and is home to 75 million people. …”
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    Assessing the impacts of climate change on climatic extremes in the Congo River Basin
  14. 4494
    “…BACKGROUND: Piper hispidinervum is a species native from the Amazon region with great economic potential, given its scientifically proven insecticidal properties. …”
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    Indirect somatic embryogenesis of Piper hispidinervum L. and evaluation of the regenerated plants by flow cytometry
  15. 4495
    “…METHODS: In Study 1 (N = 107), we administered questionnaires on Amazon’s Mechanical Turk (MTurk) to individuals from the US and Canada in a cross-sectional design to assess perceptions of rTMS compared to psychopharmacology, electroconvulsive therapy (ECT), and talk therapy. …”
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    Assessing and improving public mental health literacy concerning rTMS
  16. 4496
    “…Conversely, leaves of Amazon (V8), planted at Lahore and Swabi depicted significant levels of DPPH, ABTS, H(2)O(2) radical scavenging (90.69 ± 0.26, 63.55 ± 1.06, 51.86 ± 0.43%, respectively), and reduction of ferric ions (184.2 ± 6.75 mg GAE/100 g DW). …”
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    Variations in Total Phenolic, Total Flavonoid Contents, and Free Radicals’ Scavenging Potential of Onion Varieties Planted under Diverse Environmental Conditions
  17. 4497
    por Pavlov, C, Egan, K, Limbers, C
    Publicado 2022
    “…STUDY DESIGN, SIZE, DURATION: This is a cross-sectional study of 171 first-time mothers in the USA, recruited through Amazon’s Mechanical Turk (MTurk). PARTICIPANTS/MATERIALS, SETTING, METHODS: The reliability of the PHQ-8 was measured through a Cronbach’s alpha, the convergent validity was measured through the correlation between the PHQ-8 and the Generalized Anxiety Disorder-7 (GAD-7) measure of anxiety symptoms, and the structural validity was measured through a Confirmatory Factor Analysis. …”
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    Reliability and validity of the PHQ-8 in first-time mothers who used assisted reproductive technology
  18. 4498
    por Ein-Gar, Danit, Give’on, Amir
    Publicado 2022
    “…Online charitable fundraising platforms (e.g., One Today by Google, Round Up, and Charity Miles), websites (e.g., AmazonSmile) and crowdfunding platforms (e.g., Fundly, JustGiving, and GoFundMe) try to ease donors’ search and decision processes by offering them personalized charitable options. …”
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    The Influence of Proportion Dominance and Global Need Perception on Donations
  19. 4499
    “…BACKGROUND: Rhodnius robustus and Rhodnius pictipes are vectors of Trypanosoma cruzi, the etiologic agent of Chagas disease (CD), that are found in the Brazilian Amazon region. Susceptibility to infection and vector competence depend on the parasite-vector relationship. …”
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    Infection susceptibility and vector competence of Rhodnius robustus Larrousse, 1927 and R. pictipes Stal, 1872 (Hemiptera, Reduviidae, Triatominae) for strains of Trypanosoma cruzi (Chagas, 1909) (Kinetoplastida, Trypanosomatidae) I, II and IV
  20. 4500
    “…METHODS: The intervention was implemented in challenging conditions at five cross-border distribution sites, which imposed strong logistical constraints for the design of the information system: isolation in the Amazon rainforest, tropical climate, and lack of reliable electricity supply and internet connection. …”
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    Tailoring Mobile Data Collection for Intervention Research in a Challenging Context: Development and Implementation in the Malakit Study
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