Pesquisa-ativista em negro: uma mesa redonda interdisciplinar e transnacional

En este artículo, siete académicxs negrxs se reúnen para discutir los significados políticos, intelectuales y prácticos de la investigación activista en las Américas. Al hablar a través del Atlántico, lxs autorxs generan respuestas a preguntas relacionadas con los siguientes temas: conocimiento y orientaciones epistemológicas, teoría, posicionalidad y poder, y las alternativas en las que se ofrece la investigación y el cambio socialmente comprometidos. Haciendo referencia a las reflexiones de la investigación y la experiencia personal, este artículo considera cómo la negritud aumenta los procesos mediante los cuales los autores han creado y entendido el activismo académico. Estos comentarios buscan resaltar no solo la precariedad en la cual se define dicho trabajo, sino las oportunidades que se pueden obtener para comprender los elementos raciales, sexuales y de género de la vida social histórica y contemporánea a través de perspectivas interdisciplinarias y transnacionales.In this panel, a group of Black scholars gathers to discuss political, intellectual, and practical meanings of activist research in the Americas. Talking across the Atlantic, the authors generate responses to questions related to the following topics: knowledge and epistemological orientations, theory, positionality and power, and the alternatives in which socially-engaged research and change are offered. Calling on ruminations from research and personal experience, this article considers how Blackness augments the processes by which scholar activism has been created and understood by the authors. These comments seek to highlight not only the precarity in which such work is defined, but the opportunities that stand to be gained in understanding racial, sexual, and gendered elements of historical and contemporary social life through interdisciplinary and transnational perspectives.Neste artigo, sete acadêmicxs negrxs se reúnem para discutir os significados políticos, intelectuais e práticos da pesquisa-ativista nas Américas. Falando através do Atlântico, xs autorxs geram respostas para questões relacionadas aos seguintes tópicos: conhecimento e orientações epistemológicas, teoria, posicionalidade e poder, além de discutirem alternativas que a pesquisa socialmente engajada e as mudanças sociais oferecem. Recorrendo a reflexões de pesquisa e experiência pessoal, este artigo considera como a negritude intensifica os processos pelos quais o ativismo acadêmico é recriado e entendido pelxs autorxs. Esses comentários buscam destacar não apenas a precariedade em que tal trabalho é definido, mas também as oportunidades que tal trabalho proporciona para a compreensão dos elementos raciais, sexuais e de gênero da vida sócio-histórica e contemporânea por meio de perspectivas interdisciplinares e transnacionais

2-(1,2,3,4-Tetrahydronaphthalen-1-ylidene)hydrazinecarbothioamide

The molecular structure of the title compound, C11H13N3S, is not planar: the maximum deviation from the mean plane of the non-H atoms is 0.521 (2) Å for an aliphatic C atom, which corresponds to an envelope conformation for the non-aromatic ring. The hydrazinecarbothioamide substituent and the benzene ring have maximum deviations from the mean planes through the non-H atoms of 0.0288 (16) and 0.0124 (27) Å, respectively, and the dihedral angle between the two planes is 8.84 (13)°. In the crystal, molecules are linked into chains along [10] by pairs of N-HS hydrogen bonds between molecules related by centres of symmetry

Doses de alumínio no crescimento inicial de plantas de aboboreira em cultivo semi-hidropônico: Aluminum doses in the initial growth of squash plants in semi-hydroponic cultivation

A aboboreira (Cucurbita moschata) é uma hortaliça de grande importância econômica e apresenta potencial produtivo no Brasil. Entretanto, os solos brasileiros são ácidos e intemperizados, com elevados teores de alumínio tóxicos para o cultivo das plantas. Assim, a presença do alumínio trivalente nos solos, se torna um desafio para a agricultura brasileira, devido à toxicidade que este elemento causa, limitando a produção agrícola. Diante disto, o objetivo deste presente trabalho foi avaliar o crescimento inicial de plantas de aboboreira sob crescentes doses de alumínio, em cultivo semi-hidropônico. O experimento foi conduzido em casa de vegetação da Universidade Federal do Recôncavo da Bahia (UFRB), Cruz das Almas, Bahia. O delineamento utilizado foi o inteiramente casualizado (DIC), com cinco tratamentos: 0 (controle); 13,5; 27; 54 e 81 mg.dm-3 de cloreto de alumínio (AlCl3) com quatro repetições. Após 10 dias da aplicação, em dose única, das soluções nutritivas de Hoagland e Arnond (1950) modificadas com a adição das doses de alumínio, foram avaliados os parâmetros fisiológicos de crescimento. Os resultados foram submetidos à análise de regressão a 5% de significância. As baixas doses de alumínio promoveram o crescimento de plantas de aboboreira, enquanto as maiores doses foram tóxicas para todas as variáveis. Plantas cultivadas com doses de até 54 mg.dm-3 de Al apresentaram maiores índices de clorofilas a, b e total e acima dessas doses houve redução na produção de clorofilas. As doses 0 e 13,5 mg.dm-3 de Al foram responsáveis pelos maiores crescimentos do comprimento da raiz, altura e número de folhas. Para as produções de massa seca da raiz e massa seca da parte aérea das plantas de aboboreira, observaram-se que as menores doses de alumínio apresentaram os maiores incrementos até a dose de 13,5 mg.dm-3

Health financing policies during the COVID-19 pandemic and implications for universal health care: a case study of 15 countries

Background The COVID-19 pandemic was a health emergency requiring rapid scal resource mobilisation to support national responses. The use of e ective health nancing mechanisms and policies, or lack thereof, a ected the impact of the pandemic on the population, particularly vulnerable groups and individuals. We provide an overview and illustrative examples of health nancing policies adopted in 15 countries during the pandemic, develop a framework for resilient health nancing, and use this pandemic to argue a case to move towards universal health coverage (UHC). Methods In this case study, we examined the national health nancing policy responses of 15 countries, which were purposefully selected countries to represent all WHO regions and have a range of income levels, UHC index scores, and health system typologies. We did a systematic literature review of peer-reviewed articles, policy documents, technical reports, and publicly available data on policy measures undertaken in response to the pandemic and complemented the data obtained with 61 in-depth interviews with health systems and health nancing experts. We did a thematic analysis of our data and organised key themes into a conceptual framework for resilient health nancing. Findings Resilient health nancing for health emergencies is characterised by two main phases: (1) absorb and recover, where health systems are required to absorb the initial and subsequent shocks brought about by the pandemic and restabilise from them; and (2) sustain, where health systems need to expand and maintain scal space for health to move towards UHC while building on resilient health nancing structures that can better prepare health systems for future health emergencies. We observed that ve key nancing policies were implemented across the countries— namely, use of extra-budgetary funds for a swift initial response, repurposing of existing funds, e cient fund disbursement mechanisms to ensure rapid channelisation to the intended personnel and general population, mobilisation of the private sector to mitigate the gaps in public settings, and expansion of service coverage to enhance the protection of vulnerable groups. Accountability and monitoring are needed at every stage to ensure e cient and accountable movement and use of funds, which can be achieved through strong governance and coordination, information technology, and community engagement. Interpretation Our ndings suggest that health systems need to leverage the COVID-19 pandemic as a window of opportunity to make health nancing policies robust and need to politically commit to public nancing mechanisms that work to prepare for future emergencies and as a lever for UHC.We thank the management team of the Bill & Melinda Gates Foundation and the Saw Swee Hock School of Public Health (National University of Singapore, Singapore) for all the administrative support given. This research was funded by the Bill & Melinda Gates Foundation (Investment ID INV-005598)

Direct and indirect effects of climate on richness drive the latitudinal diversity gradient in forest trees

Data accessibility statement: Full census data are available upon reasonable request from the ForestGEO data portal, http://ctfs.si.edu/datarequest/ We thank Margie Mayfield, three anonymous reviewers and Jacob Weiner for constructive comments on the manuscript. This study was financially supported by the National Key R&D Program of China (2017YFC0506100), the National Natural Science Foundation of China (31622014 and 31570426), and the Fundamental Research Funds for the Central Universities (17lgzd24) to CC. XW was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB3103). DS was supported by the Czech Science Foundation (grant no. 16-26369S). Yves Rosseel provided us valuable suggestions on using the lavaan package conducting SEM analyses. Funding and citation information for each forest plot is available in the Supplementary Information Text 1.Peer reviewedPostprin

The Science Performance of JWST as Characterized in Commissioning

This paper characterizes the actual science performance of the James Webb Space Telescope (JWST), as determined from the six month commissioning period. We summarize the performance of the spacecraft, telescope, science instruments, and ground system, with an emphasis on differences from pre-launch expectations. Commissioning has made clear that JWST is fully capable of achieving the discoveries for which it was built. Moreover, almost across the board, the science performance of JWST is better than expected; in most cases, JWST will go deeper faster than expected. The telescope and instrument suite have demonstrated the sensitivity, stability, image quality, and spectral range that are necessary to transform our understanding of the cosmos through observations spanning from near-earth asteroids to the most distant galaxies.Comment: 5th version as accepted to PASP; 31 pages, 18 figures; https://iopscience.iop.org/article/10.1088/1538-3873/acb29

The James Webb Space Telescope Mission

Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least $4m$. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the $6.5m$ James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure