DES Y3 + KiDS-1000: Consistent cosmology combining cosmic shear surveys

We present a joint cosmic shear analysis of the Dark Energy Survey (DES Y3) and the Kilo-Degree Survey (KiDS-1000) in a collaborative effort between the two survey teams. We find consistent cosmological parameter constraints between DES Y3 and KiDS-1000 which, when combined in a joint-survey analysis, constrain the parameter $S_8 = \sigma_8 \sqrt{\Omega_{\rm m}/0.3}$ with a mean value of $0.790^{+0.018}_{-0.014}$. The mean marginal is lower than the maximum a posteriori estimate, $S_8=0.801$, owing to skewness in the marginal distribution and projection effects in the multi-dimensional parameter space. Our results are consistent with $S_8$ constraints from observations of the cosmic microwave background by Planck, with agreement at the $1.7\sigma$ level. We use a Hybrid analysis pipeline, defined from a mock survey study quantifying the impact of the different analysis choices originally adopted by each survey team. We review intrinsic alignment models, baryon feedback mitigation strategies, priors, samplers and models of the non-linear matter power spectrum.Comment: 38 pages, 21 figures, 15 tables, submitted to the Open Journal of Astrophysics. Watch the core team discuss this analysis at https://cosmologytalks.com/2023/05/26/des-kid

Acumulación de componentes nitrogenados y reducción de carbohidratos en la fijación de nitrógeno de plantas de Vigna unguiculata (L.) Walp sometidas a estrés hídrico y rehidratadas

In this study nodulated cowpea plants were exposed to a progressive drought-stress followed by rewatering in orderto establish mechanisms related to the nodule sensitivity to N2 fixation. Water stress caused a prominent decreasein the dry matter of leaf and nodule in contrast to the root growth that was stimulated. The drought-stressed plantsshowed a great decline in the ureide concentration of xylem sap whilst the concentration of the nodule leghaemoglobindecreased slightly. The stressed-nodules had significant accumulation of soluble carbohydrates in parallel to intenseincrease in the concentration of ureide, total amino acid and proline. After two days rewatering, the leaf growthshowed a significant enhancement whereas in nodules a poor recovery was observed. In addition, the nodule N2 fixationcapacity did not improve after rehydration whereas the sap ureide experienced only a slight recovery and surprisinglythe content of nodule soluble protein continued to drop. In contrast, a significant recovery in the nodule leghaemoglobincontent was observed. Rewatering greatly induced depletion of both sucrose and total soluble sugarcontents of nodules that were associated to a great decrease in the concentration of ureide, proline and amino acids,especially in leaves. Conversely the poor recovery of cowpea nodules after rehydration was apparently related to a carbohydrateshortage.A fin de establecer los mecanismos relacionados con la capacidad de los nódulos para fijar nitrógeno atmosférico, se expusieron plantas de Vigna unguiculata (L.) Walp noduladas a un estrés progresivo de sequía seguido de rehidratación. La sequía produjo una importante disminución en la materia seca de las hojas y de los nódulos, y en cambio estimuló el crecimiento de las raíces; por otro lado, hubo una gran disminución en la concentración de ureidos de la savia del xilema. Los nódulos sometidos a estrés presentaron una acumulación significativa de carbohidratos solubles, junto con un intenso aumento de la concentración de ureidos, aminoácidos totales y prolina, disminuyendo levemente la concentración de leghemoglobina. Tras dos días de rehidratación, el crecimiento de las hojas aumentó significativamente, pero tanto los ureidos de la savia como los nódulos sólo se recuperaron de forma leve, y no aumentó su capacidad de fijación de N2. (...

Influencia do calcio nas caracteristicas fisicas e no teor de calcio durante desenvolvimento e maturacao da uva Italia.

O objetivo deste trabalho foi avaliar o efeito da aplicacao pre-colheita de Ca nas caracteristicas fisicas e nos teores de Ca durante o desenvolvimento e maturacao da uva (Vitis vinifera L.) Italia. O experimento foi realizado na Empresa Timbauba Agricola S.A., em Petrolina, PE. Utilizaram-se doses de calcio (0, 0,5, 1,0 e 1,5%) na forma de cloreto de calcio diidratado, aplicadas via imersao dos cachos, durante 10 segundos, na fase de mudanca de cor e inicio de amolecimento das bagas (57 dias apos a formacao dos frutos). Os cachos marcados foram avaliados aos 28, 43, 57, 72 e 92 dias apos a formacao dos frutos. O delineamento experimental foi inteiramente casualizado, em fatorial 4 x 5 (dose de Ca x fase do desenvolvimento), com quatro repeticoes. Niveis crescentes de Ca aumentaram os teores de Ca total e soluvel no engaco e na baga, alem do Ca insoluvel no engaco. Na baga, os tratamentos nao tiveram efeito quanto ao conteudo de Ca insoluvel. As doses de 0,5 e 1,0% de Ca incrementaram ligeiramente o peso e o volume da baga, havendo resposta inversa nos frutos tratados com 1,5%.Made available in DSpace on 2011-04-09T20:01:29Z (GMT). No. of bitstreams: 1 OPB1169.pdf: 207175 bytes, checksum: 358768e3ef5dc516846cbd1c20956fa1 (MD5) Previous issue date: 2001-04-03200

Qulidade, fenois e enzimas oxidativas de uva Italia sob influencia do calcio, durante a maturacao.

Este trabalho foi realizado na Empresa Timbauba Agricola S.A., em Petrolina, PE, visando avaliar o efeito da aplicacaoMade available in DSpace on 2011-04-09T20:01:27Z (GMT). No. of bitstreams: 1 OPB1168.pdf: 268723 bytes, checksum: b6368966dfaabda9d8ff3a2b3611727f (MD5) Previous issue date: 2001-03-23200