Recomendações para a produção de mudas de cajueiro em tubetes.

Recomendacoes para a producao de mudas de cajueiro em tubetes.bitstream/item/33816/1/Ct-068.pd

An ultralow power 3-terminal memory device with write capability in the off-state

In this work, we demonstrated a room temperature fabricated ZnO/Ta 2 O 5 transistor for low power compute-in-memory application. By writing during the off-state, the device programmed for compute-in-memory shows power consumption in nW. By using variable pulse amplitudes for SET/RESET allows control of the on/off ratio of resistance states without affecting power consumption. Benchmarked against other ReRAMs the device shows a competitive 8 nJ per transition, which allows a reduction of power consumption in comparison to a filamentary device

Avaliação dos métodos de propagação de algumas spondias agroindustriais.

A Embrapa Agroindústria Tropical vem desenvolvendo pesquisas sobre os métodos de propagação, visando ao aumento da germinação, clonagem de genótipos superiores para produção de mudas, domesticação e cultivo em escala comercial.bitstream/CNPAT-2010/11954/1/Ct-031.pd

Produção de mudas das Spondias cajazeira, cajaraneira, cirigueleira, umbu-cajazeira e umbuzeiro.

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Atividade ovariana pós-parto em ovelhas Santa Inês sob diferentes manejos de amamentação na região semiárida do Nordeste.

Objetivou-se investigar o efeito de diferentes manejos de amamentação sobre a atividade ovariana pós-parto em ovelhas da raça Santa Inês por meio das concentrações circulantes de progesterona. Foram utilizadas 18 fêmeas com idade entre 22 e 72 meses. Após o parto, os cordeiros ficaram com as ovelhas até o 14º diae, a partir do 15º dia foram distribuídas em dois grupos: amamentação contínua (n=9) e controlada (n=9). As coletas de sangue para a dosagem de progesterona aconteceram a cada sete dias a partir do parto até o primeiro estro e, em seguida, a cada quatro dias até o segundo estro. Houve atividade ovulatória silenciosa antes do primeiro estro pós-parto em 85,70% (5/9) e 25% (3/9) das fêmeas em amamentação contínua e controlada, respectivamente. As ovelhas com amamentação contínua apresentaram o estro mais tardiamente (37,71±3,34 dias) do que as com mamada controlada (26,12±2,4 dias). As concentrações plasmáticas de progesterona entre o parto e o primeiro estro foram 2,81±1,58ng/mL vs 1,45±0,59ng/mL e ao estro 0,25±0,34ng/mL vs 0,32±0,18ng/mL para amamentação contínua e controlada, respectivamente. Os níveis médios de progesterona entre o primeiro e o segundo estro pós-parto foram 1,53±0,54 ng/mL e 2,50±1,09ng/mL, para amamentação contínua e controlada, respectivamente, estes estros ocorreram em 77,7% vs 100% e 66.6% vs 100% das fêmeas, na mesma ordem. Conclui-se que a amamentação tem influência sobre a atividade Ovarian activity in Santa Inês sheep under different types of suckling in semi-arid area of Brazil ovariana pós-parto em ovelhas Santa Inês e ciclos curtos e silenciosos são necessários para uma atividade cíclica normal no pós-parto. Ovarian activity in Santa Inês sheep under different types of suckling in semi-arid area of Brazil. SUMMARY - Aiming to investigate the suckling effect on ovarian activity in postpartum Santa Inês ewes through progesterone levels, it was used 18 females aging between 22 and 72 months. After parturition, the lambs stayed with the dams until the 14th day and from the 15th day they were divided in two treatments: continuous and controlled suckling. The blood collection for progesterone happened each seven days from parturition until the first estrous, and, thereafter, each 4 days until the second estrous. There was a silence ovulatory activity before the first postpartum estrous in 85.70% and 25% of the animals submitted to continuos and controlled suckling, while the occurrence of first estrous in the first group was delayed (37.71±3.34 days) in relation to controlled suckling group (26.12±2.4 days). The progesterone average levels between the parturition and the first estrous postpartum were 2.81±1.58ng/mL versus 1.45±0.59ng/mL, and on estrous were 0.25±0,34ng/mL versus 0,32±0,18ng/mL, for females under continuos and controlled suckling, respectively. The progesterone average levels between the first and the second estrous postpartum were 1.53±0.54ng/mL and 2.50±1.09ng/mL, for females under continuos and controlled suckling, espectively, happened these estrous in 77.7% versus 100% and 66.6% versus 100% for females, in the same order. It is concluded that suckling stimuli has influence on the postpartum ovarian activity in Santa Inês ewes and short and silent cycles are necessaries to normal postpartum ovarian cyclic

Métodos de enxertia recomendados para a produção de mudas de cajazeira e de outras fruteiras do gênero spondias.

As principais especies do genero spondias que ocorrem no Nordeste brasileiro sao Spondias mombim (cajazeira) Spondias purpurea (cirigueleira) Spondias cytherea (cajananeira), Spondias tuberosa (umbuzeiro) Spondias ssp (umbu-cajazeira e umbugueleira.bitstream/item/33817/1/Ct-037.pd

Dark Sector from Interacting Canonical and Non-Canonical Scalar Fields

In this work it is investigated general models with interactions between two canonical scalar fields and between one non-canonical (tachyon-type) and one canonical scalar field. The potentials and couplings to the gravity are selected through the Noether symmetry approach. These general models are employed to describe interactions between dark energy and dark matter, with the fields being constrained by the astronomical data. The cosmological solutions of some cases are compared with the observed evolution of the late Universe.Comment: 20 pages, 13 figures, correction of misprints in eqs. (4), (5), (43), (44

Chuvas intensas em Belém nos últimos cinco anos.

Rainfall characteristics are important to specialists in various fields including agronomists and hydrologists, since rainfall is the major factor controlling agricultural productivity and the hydrologic cycle of a region. However, heavy rainfall is ineffective for agriculture and it causes soil erosion. This paper discusses rainfall characteristics dealing with the largest daily and monthly totals occurred in Belém, during the last five years (1997-2001), comparing to a thirty years period (1967- 1930). In order to analyze these rainfall characteristics, rainfall seasonally and the largest rainfall totals for each month and day in the year were studied. The concept of effective rainfall and the results of water balance calculation were also applied. The mean results indicated that the largest daily rainfall totals occurred during the most wet season and that during the last five years, the largest daily and monthly rainfall totals do not exceed the thirty- year period