COVID-19 Vaccine Acceptability and Financial Incentives among Unhoused People in Los Angeles County: a Three-Stage Field Survey.

Unhoused people have higher COVID-19 mortality and lower vaccine uptake than housed community members. Understanding vaccine hesitancy among unhoused people is key for developing programs that address their unique needs. A three-round, rapid, field-based survey was conducted to describe attitudes toward COVID-19 vaccination. Round 1 assessed vaccine brand preference, round 2 assessed intention to accept a financial incentive for vaccination, and round 3 measured vaccine uptake and assessed reasons for vaccine readiness during implementation of a financial incentive program. A total of 5177 individuals were approached at COVID-19 vaccination events for unhoused people in Los Angeles County from May through November 2021. Analyses included 4949 individuals: 3636 (73.5%) unsheltered and 1313 (26.5%) sheltered. Per self-report, 2008 (40.6%) were already vaccinated, 1732 (35%) wanted to get vaccinated, 359 (7.3%) were not yet ready, and 850 (17.2%) did not want to get vaccinated. Brand preference was evenly split among participants (Moderna 31.0%, J&J 35.5%, either 33.5%, p = 0.74). Interest in a financial incentive differed between those who were not yet ready and those who did not want to get vaccinated (43.2% vs. 16.2%, p < 0.01). After implementing a financial incentive program, 97.4% of participants who indicated interest in vaccination were vaccinated that day; the financial incentive was the most cited reason for vaccine readiness (n = 731, 56%). This study demonstrated the utility of an iterative, field-based assessment for program implementation during the rapidly evolving pandemic. Personal engagement, a variety of brand choices, and financial incentives could be important for improving vaccine uptake among unhoused people.

Conformational Effects of [Ni2 (µ-ArS)2 ] Cores on Their Electrocatalytic Activity.

Two nickel complexes supported by tridentate NS2 ligands, [Ni2 (κ-N,S,S,S'-NPh {CH2 (MeC6 H2 R')S}2 )2 ] (1; R'=3,5-(CF3 )2 C6 H3 ) and [Ni2 (κ-N,S,S,S'-NiBu {CH2 C6 H4 S}2 )2 ] (2), were prepared as bioinspired models of the active site of [NiFe] hydrogenases. The solid-state structure of 1 reveals that the [Ni2 (µ-ArS)2 ] core is bent, with the planes of the nickel centers at a hinge angle of 81.3(5)°, whereas 2 shows a coplanar arrangement between both nickel(II) ions in the dimeric structure. Complex 1 electrocatalyzes proton reduction from CF3 COOH at -1.93 (overpotential of 1.04 V, with icat /ip ≈21.8) and -1.47 V (overpotential of 580 mV, with icat /ip ≈5.9) versus the ferrocene/ferrocenium redox couple. The electrochemical behavior of 1 relative to that of 2 may be related to the bent [Ni2 (µ-ArS)2 ] core, which allows proximity of the two Ni⋅⋅⋅Ni centers at 2.730(8) Å; thus possibly favoring H+ reduction. In contrast, the planar [Ni2 (µ-ArS)2 ] core of 2 results in a Ni⋅⋅⋅Ni distance of 3.364(4) Šand is unstable in the presence of acid.

Yield potential of hybrid castor bean plants in different plant densities in the off season in a stressful environment / Potencial produtivo de híbridos de mamona em diferentes densidades de plantas na segunda safra em ambiente estressante

A mamona (Ricinus communis L.) tem proporcionado relevância no plano agroindustrial do país pela qualidade do óleo produzido. A obtenção de híbridos adaptados às condições de cultivo em segunda safra e com características apropriadas ao cultivo mecanizado é visado através do melhoramento. Assim sendo, o trabalho teve por objetivo avaliar híbridos precoces de mamona em função de populações de plantas cultivados na região da Nova Alta Paulista em segunda safra. Adotou-se o delineamento experimental em blocos casualizados em esquema fatorial 3x4, sendo três híbridos de mamona (AGIMA 110204, MIA e TAMAR) e quatro densidades de plantas por metro linear (2, 4, 6 e 8), com quatro repetições por tratamento. No dia 12 de abril de 2017 aconteceu a semeadura na fazenda de pesquisa da UNESP/FCAT – Campus de Dracena. As avaliações de desenvolvimento de plantas e características reprodutivas foram realizadas aos 138 dias após a emergência das plantas (DAE). Altura de plantas, números de racemos por planta, massa de cem grãos e leitura SPAD de clorofila nos tratamentos testados tiveram médias semelhantes. O híbrido TAMAR apresentou a maior altura de inserção do primeiro racemo, e junto com o hibrido MIA tiveram os maiores racemos produzidos. O diâmetro do caule de todos os híbridos apresentou redução linear em função do aumento da população de plantas na linha de semeadura. A produtividade de grãos dos híbridos foi de 1.784 kg ha-1 (TAMAR), 1.659 kg ha-1(AGIMA 110204) e 1.547 kg ha-1 (MIA).

The relevance of the castor bean plant in Brazil's agribusiness plan lies in the quality of the oil it produces. That is why, to improve its quality, there is interest in obtaining hybrid plants adapted to off-season growing conditions and with the appropriate characteristics for mechanized cultivation. This study was conducted to examine the premature growth of hybrid castor bean plants as a function of plant populations cultivated in the off season in the Nova Alta Paulista region of the state of São Paulo. A randomized complete block design with a 3x4 factorial arrangement, three hybrid castor bean plants (AGIMA 110204, MIA, and TAMAR) and four individuals per linear meter (2, 4, 6, and 8), was adopted, and four replications wereperformed for each treatment. The seeds were sown on April 12, 2017, at the UNESP/FCAT research farm in Dracena, São Paulo. Assessments on plant development and reproductive traits were made 138 days after emergence (DAE). The plants’ height, number of racemes per plant, 100-grain weight, and SPAD chlorophyll reading in the treatments resulted in similar averages. The TAMAR hybrid presented the highest insertion point for the primary raceme and, along with the MIA hybrid, produced the largest racemes. The stem diameter of all the hybrids presented a linear decrease as the plant population increased along the line the seeds were sown. The grain yields of the hybrids were 1,784 kg ha-1(TAMAR), 1,659 kg ha-1 (AGIMA 110204), and 1,547 kg ha-1 (MIA).

Yield potential of hybrid castor bean plants in different plant densities in the off season in a stressful environment / Potencial produtivo de híbridos de mamona em diferentes densidades de plantas na segunda safra em ambiente estressante

A mamona (Ricinus communis L.) tem proporcionado relevância no plano agroindustrial do país pela qualidade do óleo produzido. A obtenção de híbridos adaptados às condições de cultivo em segunda safra e com características apropriadas ao cultivo mecanizado é visado através do melhoramento. Assim sendo, o trabalho teve por objetivo avaliar híbridos precoces de mamona em função de populações de plantas cultivados na região da Nova Alta Paulista em segunda safra. Adotou-se o delineamento experimental em blocos casualizados em esquema fatorial 3x4, sendo três híbridos de mamona (AGIMA 110204, MIA e TAMAR) e quatro densidades de plantas por metro linear (2, 4, 6 e 8), com quatro repetições por tratamento. No dia 12 de abril de 2017 aconteceu a semeadura na fazenda de pesquisa da UNESP/FCAT Campus de Dracena. As avaliações de desenvolvimento de plantas e características reprodutivas foram realizadas aos 138 dias após a emergência das plantas (DAE). Altura de plantas, números de racemos por planta, massa de cem grãos e leitura SPAD de clorofila nos tratamentos testados tiveram médias semelhantes. O híbrido TAMAR apresentou a maior altura de inserção do primeiro racemo, e junto com o hibrido MIA tiveram os maiores racemos produzidos. O diâmetro do caule de todos os híbridos apresentou redução linear em função do aumento da população de plantas na linha de semeadura. A produtividade de grãos dos híbridos foi de 1.784 kg ha-1 (TAMAR), 1.659 kg ha-1(AGIMA 110204) e 1.547 kg ha-1 (MIA).(AU)

The relevance of the castor bean plant in Brazil's agribusiness plan lies in the quality of the oil it produces. That is why, to improve its quality, there is interest in obtaining hybrid plants adapted to off-season growing conditions and with the appropriate characteristics for mechanized cultivation. This study was conducted to examine the premature growth of hybrid castor bean plants as a function of plant populations cultivated in the off season in the Nova Alta Paulista region of the state of São Paulo. A randomized complete block design with a 3x4 factorial arrangement, three hybrid castor bean plants (AGIMA 110204, MIA, and TAMAR) and four individuals per linear meter (2, 4, 6, and 8), was adopted, and four replications wereperformed for each treatment. The seeds were sown on April 12, 2017, at the UNESP/FCAT research farm in Dracena, São Paulo. Assessments on plant development and reproductive traits were made 138 days after emergence (DAE). The plants height, number of racemes per plant, 100-grain weight, and SPAD chlorophyll reading in the treatments resulted in similar averages. The TAMAR hybrid presented the highest insertion point for the primary raceme and, along with the MIA hybrid, produced the largest racemes. The stem diameter of all the hybrids presented a linear decrease as the plant population increased along the line the seeds were sown. The grain yields of the hybrids were 1,784 kg ha-1(TAMAR), 1,659 kg ha-1 (AGIMA 110204), and 1,547 kg ha-1 (MIA).(AU)