433 research outputs found
Cocriação remota entre equipes de agências publicitárias portuguesas: uma nova era de trabalho
Atualmente podemos observar que o mercado de trabalho sofreu inúmeras mudanças por causa da pandemia causada pelo COVID-19. Processos que antes eram presenciais, agora passam a ser cada vez mais realizados remotamente através de ferramentas digitais, as quais estão em constante evolução de acordo com o ambiente. Além da modernização tecnológica, os processos cocriativos também transitaram para o mundo virtual, sendo cada vez mais utilizados pelas empresas e agências, ao mesmo tempo que o lado humano no trabalho em equipe se tronou cada vez mais exigente e desafiante. Apesar do uso contínuo da cocriação, a maioria dos estudos retratam as interações entre grandes marcas e a sociedade, mas pouco sobre como se desenvolvem tais momentos dentro das agências de publicidade, especialmente em ambientes remotos. Deste modo, torna-se imprescindível investigar como os processos co criativos, junto as novas ferramentas digitais, podem impactar nos momentos co criativos realizados de forma remota, pelas equipas de agências publicitárias portuguesas. A metodologia de pesquisa adotada foi realizada em duas etapas: uma primeira de caráter qualitativo, e uma segunda de caráter quantitativo. A abordagem qualitativa foi realizada através de entrevistas online realizadas a diretores criativos das agências, com intuito de compreender como estão a ocorrer os processos de cocriação remota, que ferramentas utilizam e quais barreiras e aspetos positivos são promovidos com a utilização destes processos de forma remata. A segunda fase da pesquisa, implementada através de um inquérito online, destinado aos profissionais dos diferentes setores que uma agência possui, visou compreender se o conceito de cocriação de cada profissional é similar ao dos seus líderes, aspetos positivos e negativos de cada etapa do processo cocriativo realizado remotamente, que ferramentas digitais os auxiliam, qual a frequência da cocriação remota, bem como analisar se os pontos negativos das etapas co criativas servem de motivos para influenciar na produtividade dos profissionais, afetando sua saúde emocional e psicológica. Após todas as duas análise, foi possível compreender que os processos cocriativos estão cada vez mais frequentes no ambiente de trabalho remoto, profissionais de diversas áreas já possuem experiência e conhecimento sobre o assunto, entretanto, por se tratar de um ambiente a distância, os momentos cocriativos acabam por sofrer com o impasse entre o racional e o emocional. A falta de motivação correta e as limitações do mundo virtual no dia a dia, são algumas das causas que acabam por prejudicar a qualidade na entrega dos projetos. Tudo isso passa a gerar novos desafios a serem estudados e enfrentados.Currently, Its possible to inform that the working environment has changed because of the pandemic caused by COVID-19. Processes that were previously in-person are now being intensified remotely through digital tools, in which they are constantly evolving according to the environment. In addition to technological evolution, cocreative processes have had also their transitions for virtual world, greatly, each day more, reinforced in companies and agencies, while the human side of institutions was increasingly demanded. Despite the continuous use of cocreation, most studies portray about interactions between big brands and society, but little about such moments within advertising agencies. A place where, the human factor, there is still loss of times. Thus, it is essential to investigate how co-creative processes, together with new digital tools, can impact co-creative moments, remotely, between teams of Portuguese advertising agencies. The methodology adopted follows two types of research: quantitative and qualitative. The qualitative approach will be carried out through online distributions with the agencies' creative directors, in order to understand how remote co-creation is performed, which tools they use and which barriers and strengths they can perceive in the various projects. In addition, in a second phase, there will be an online survey, aimed at professionals from different sectors inside agencies, in order to understand if the concept of creation of each professional is similar to their leaders, which positive and negative points of each stage of the creative process, which digital tools help them, how often is co-creation, now remotely, and analyzing whether the negative points of the co-creative steps serve as reasons to influence the productivity of professionals, affecting their emotional and psychological health. It will thus be possible to understand the behavior of professionals today, their beliefs, opinions about what does not work, in addition to different proportions through interactive and modern processes. After analizing the two phases, it was possible to realize that cocreative processes are, constantly, presente on virtual environment, professionais with different backgrounds show their knowledge and experience on the subjetc, on the other hand, leading with all the challenges totally isolated from the society, may develop a battle between the rational and the emotional feeling. The lack of motivation from the leaders and the virtual limitations, are some of the reasons which end up to disturb the delivering of the final projetcs. All this leading a new rise of challenges to be studied and faced
Comparative untargeted metabolome analysis of ruminal fuid and feces of Nelore steers (Bos indicus).
We conducted a study to identify the fecal metabolite profle and its proximity to the ruminal metabolism of Nelore steers based on an untargeted metabolomic approach. Twenty-six Nelore were feedlot with same diet during 105 d. Feces and rumen fuid were collected before and at slaughter, respectively. The metabolomics analysis indicated 49 common polar metabolites in the rumen and feces. Acetate, propionate, and butyrate were the most abundant polar metabolites in both bio-samples. The rumen presented signifcantly higher concentrations of the polar compounds when compared to feces (P< 0.05); even though, fecal metabolites presented an accentuated representability of the ruminal fuid metabolites. All fatty acids present in the ruminal fuid were also observed in the feces, except for C20:2n6 and C20:4n6. The identifed metabolites ofer information on the main metabolic pathways (higher impact factor and P< 0.05), as synthesis and degradation of ketone bodies; the alanine, aspartate and glutamate metabolisms, the glycine, serine; and threonine metabolism and the pyruvate metabolism. The fndings reported herein on the close relationship between the ruminal fuid and feces metabolic profles may ofer new metabolic information, in addition to facilitating the sampling for metabolism investigation in animal production and health routines
Pervasive gaps in Amazonian ecological research
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear un derstanding of how ecological communities respond to environmental change across time and space.3,4
While the increasing availability of global databases on ecological communities has advanced our knowledge
of biodiversity sensitivity to environmental changes,5–7 vast areas of the tropics remain understudied.8–11 In
the American tropics, Amazonia stands out as the world’s most diverse rainforest and the primary source of
Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepre sented in biodiversity databases.13–15 To worsen this situation, human-induced modifications16,17 may elim inate pieces of the Amazon’s biodiversity puzzle before we can use them to understand how ecological com munities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus
crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced
environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple or ganism groups in a machine learning model framework to map the research probability across the Brazilian
Amazonia, while identifying the region’s vulnerability to environmental change. 15%–18% of the most ne glected areas in ecological research are expected to experience severe climate or land use changes by
2050. This means that unless we take immediate action, we will not be able to establish their current status,
much less monitor how it is changing and what is being lostinfo:eu-repo/semantics/publishedVersio
Pervasive gaps in Amazonian ecological research
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost
Pervasive gaps in Amazonian ecological research
Biodiversity loss is one of the main challenges of our time,1,2 and attempts to address it require a clear understanding of how ecological communities respond to environmental change across time and space.3,4 While the increasing availability of global databases on ecological communities has advanced our knowledge of biodiversity sensitivity to environmental changes,5,6,7 vast areas of the tropics remain understudied.8,9,10,11 In the American tropics, Amazonia stands out as the world's most diverse rainforest and the primary source of Neotropical biodiversity,12 but it remains among the least known forests in America and is often underrepresented in biodiversity databases.13,14,15 To worsen this situation, human-induced modifications16,17 may eliminate pieces of the Amazon's biodiversity puzzle before we can use them to understand how ecological communities are responding. To increase generalization and applicability of biodiversity knowledge,18,19 it is thus crucial to reduce biases in ecological research, particularly in regions projected to face the most pronounced environmental changes. We integrate ecological community metadata of 7,694 sampling sites for multiple organism groups in a machine learning model framework to map the research probability across the Brazilian Amazonia, while identifying the region's vulnerability to environmental change. 15%–18% of the most neglected areas in ecological research are expected to experience severe climate or land use changes by 2050. This means that unless we take immediate action, we will not be able to establish their current status, much less monitor how it is changing and what is being lost
Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK.
BACKGROUND: A safe and efficacious vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), if deployed with high coverage, could contribute to the control of the COVID-19 pandemic. We evaluated the safety and efficacy of the ChAdOx1 nCoV-19 vaccine in a pooled interim analysis of four trials. METHODS: This analysis includes data from four ongoing blinded, randomised, controlled trials done across the UK, Brazil, and South Africa. Participants aged 18 years and older were randomly assigned (1:1) to ChAdOx1 nCoV-19 vaccine or control (meningococcal group A, C, W, and Y conjugate vaccine or saline). Participants in the ChAdOx1 nCoV-19 group received two doses containing 5 × 1010 viral particles (standard dose; SD/SD cohort); a subset in the UK trial received a half dose as their first dose (low dose) and a standard dose as their second dose (LD/SD cohort). The primary efficacy analysis included symptomatic COVID-19 in seronegative participants with a nucleic acid amplification test-positive swab more than 14 days after a second dose of vaccine. Participants were analysed according to treatment received, with data cutoff on Nov 4, 2020. Vaccine efficacy was calculated as 1 - relative risk derived from a robust Poisson regression model adjusted for age. Studies are registered at ISRCTN89951424 and ClinicalTrials.gov, NCT04324606, NCT04400838, and NCT04444674. FINDINGS: Between April 23 and Nov 4, 2020, 23 848 participants were enrolled and 11 636 participants (7548 in the UK, 4088 in Brazil) were included in the interim primary efficacy analysis. In participants who received two standard doses, vaccine efficacy was 62·1% (95% CI 41·0-75·7; 27 [0·6%] of 4440 in the ChAdOx1 nCoV-19 group vs71 [1·6%] of 4455 in the control group) and in participants who received a low dose followed by a standard dose, efficacy was 90·0% (67·4-97·0; three [0·2%] of 1367 vs 30 [2·2%] of 1374; pinteraction=0·010). Overall vaccine efficacy across both groups was 70·4% (95·8% CI 54·8-80·6; 30 [0·5%] of 5807 vs 101 [1·7%] of 5829). From 21 days after the first dose, there were ten cases hospitalised for COVID-19, all in the control arm; two were classified as severe COVID-19, including one death. There were 74 341 person-months of safety follow-up (median 3·4 months, IQR 1·3-4·8): 175 severe adverse events occurred in 168 participants, 84 events in the ChAdOx1 nCoV-19 group and 91 in the control group. Three events were classified as possibly related to a vaccine: one in the ChAdOx1 nCoV-19 group, one in the control group, and one in a participant who remains masked to group allocation. INTERPRETATION: ChAdOx1 nCoV-19 has an acceptable safety profile and has been found to be efficacious against symptomatic COVID-19 in this interim analysis of ongoing clinical trials. FUNDING: UK Research and Innovation, National Institutes for Health Research (NIHR), Coalition for Epidemic Preparedness Innovations, Bill & Melinda Gates Foundation, Lemann Foundation, Rede D'Or, Brava and Telles Foundation, NIHR Oxford Biomedical Research Centre, Thames Valley and South Midland's NIHR Clinical Research Network, and AstraZeneca
Safety and efficacy of the ChAdOx1 nCoV-19 vaccine (AZD1222) against SARS-CoV-2: an interim analysis of four randomised controlled trials in Brazil, South Africa, and the UK
Background
A safe and efficacious vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), if deployed with high coverage, could contribute to the control of the COVID-19 pandemic. We evaluated the safety and efficacy of the ChAdOx1 nCoV-19 vaccine in a pooled interim analysis of four trials.
Methods
This analysis includes data from four ongoing blinded, randomised, controlled trials done across the UK, Brazil, and South Africa. Participants aged 18 years and older were randomly assigned (1:1) to ChAdOx1 nCoV-19 vaccine or control (meningococcal group A, C, W, and Y conjugate vaccine or saline). Participants in the ChAdOx1 nCoV-19 group received two doses containing 5 × 1010 viral particles (standard dose; SD/SD cohort); a subset in the UK trial received a half dose as their first dose (low dose) and a standard dose as their second dose (LD/SD cohort). The primary efficacy analysis included symptomatic COVID-19 in seronegative participants with a nucleic acid amplification test-positive swab more than 14 days after a second dose of vaccine. Participants were analysed according to treatment received, with data cutoff on Nov 4, 2020. Vaccine efficacy was calculated as 1 - relative risk derived from a robust Poisson regression model adjusted for age. Studies are registered at ISRCTN89951424 and ClinicalTrials.gov, NCT04324606, NCT04400838, and NCT04444674.
Findings
Between April 23 and Nov 4, 2020, 23 848 participants were enrolled and 11 636 participants (7548 in the UK, 4088 in Brazil) were included in the interim primary efficacy analysis. In participants who received two standard doses, vaccine efficacy was 62·1% (95% CI 41·0–75·7; 27 [0·6%] of 4440 in the ChAdOx1 nCoV-19 group vs71 [1·6%] of 4455 in the control group) and in participants who received a low dose followed by a standard dose, efficacy was 90·0% (67·4–97·0; three [0·2%] of 1367 vs 30 [2·2%] of 1374; pinteraction=0·010). Overall vaccine efficacy across both groups was 70·4% (95·8% CI 54·8–80·6; 30 [0·5%] of 5807 vs 101 [1·7%] of 5829). From 21 days after the first dose, there were ten cases hospitalised for COVID-19, all in the control arm; two were classified as severe COVID-19, including one death. There were 74 341 person-months of safety follow-up (median 3·4 months, IQR 1·3–4·8): 175 severe adverse events occurred in 168 participants, 84 events in the ChAdOx1 nCoV-19 group and 91 in the control group. Three events were classified as possibly related to a vaccine: one in the ChAdOx1 nCoV-19 group, one in the control group, and one in a participant who remains masked to group allocation.
Interpretation
ChAdOx1 nCoV-19 has an acceptable safety profile and has been found to be efficacious against symptomatic COVID-19 in this interim analysis of ongoing clinical trials
O papel da imuno-histoquímica na detecção de invasão vascular em espécimes de dissecção endoscópica da submucosa.
Introduction: Endoscopic submucosal dissection (ESD) of early neoplasias of the gastrointestinal tract (GIT) has been increasingly applied
as an alternative to invasive surgical procedures, with the aim to preserve the patient’s organ and quality of life, although it does not allow
the histopathological analysis of lymph nodes. Previous studies demonstrated that the presence of neoplastic emboli in lymphatic (lymphatic
vascular invasion [LVI]) or blood vessels (blood vascular invasion [BVI]) is considered a positive predictive factor for the occurrence of lymph
node metastasis. The assessment of vascular invasion carried out only by routine hematoxylin and eosin staining (HE) may yield both falsepositive
and false-negative results. D2-40 is a specific monoclonal antibody to the lymphatic endothelium. Thus, it is useful for identifying LVI
and distinguishing if tumor embolization is found in blood or lymphatic vessels. Objective: To determine the role of immunohistochemistry
(IHC) in the assessment of ESD specimens by comparing the detection of LVI and BVI by HE and IHC with D2-40 and CD34 immunolabeling.
Method: We conducted the IHC study using D2-40 and CD34 markers (pan-endothelial) in 30 cases of ESD with histological diagnosis of
carcinoma in order to assess the presence of LVI and BVI. Results: The detection of LVI was more prevalent than BVI. Three out of six cases
with LVI were false-positive by HE and six were false-negative by IHC. Regarding BVI, five cases were identified and one was false-negative by
IHC. Conclusion: Our results indicated that the histopathological analysis of ESD specimens by exclusively routine HE staining does not allow
proper evaluation of BVI or LVI
Comparative untargeted metabolome analysis of ruminal fluid and feces of Nelore steers (Bos indicus)
We conducted a study to identify the fecal metabolite profile and its proximity to the ruminal metabolism of Nelore steers based on an untargeted metabolomic approach. Twenty-six Nelore were feedlot with same diet during 105 d. Feces and rumen fluid were collected before and at slaughter, respectively. The metabolomics analysis indicated 49 common polar metabolites in the rumen and feces. Acetate, propionate, and butyrate were the most abundant polar metabolites in both bio-samples. The rumen presented significantly higher concentrations of the polar compounds when compared to feces (P P This article is published as Malheiros, J.M., Correia, B.S.B., Ceribeli, C. et al. Comparative untargeted metabolome analysis of ruminal fluid and feces of Nelore steers (Bos indicus). Sci Rep 11, 12752 (2021). doi:10.1038/s41598-021-92179-y.</p
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