Results 51 to 60 of about 4,188 (156)
Potentially nilpotent sign pattern matrices
Linear Algebra and its Applications, 1999 The authors investigate the property \(N\) of being nilpotent. They establish several qualitative necessary conditions for patterns to allow \(N\) in Section 2 ``Qualitative conditions for nilpotence''. In Section 3 ``Patterns that allow nilpotence of index 2'', they investigate the sign patterns that allow nilpotence of index 2.
Eschenbach, Carolyn A., Li, Zhongshan
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Drought Responses in Three Apple Cultivars Using an Autonomous Sensor-based Irrigation System
HortScienceIrrigation decision support systems evolving in the domestic temperate tree fruit production industry incorporate measures of soil moisture status, which diverges from classic physiological indicators of edaphic stress.
Andrew M. Bierer, Lisa Tang
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Pesquisa Agropecuária Brasileira, 1999 Um estudo foi realizado sob condições de laboratório e de campo objetivando avaliar um sensor de solo utilizado para determinação da temperatura e da tensão da água no solo.
Carlos Alberto da Silva Oliveira
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Time Domain Transmissiometry-Based Sensor for Simultaneously Measuring Soil Water Content, Electrical Conductivity, Temperature, and Matric Potential. [PDF]
Sensors (Basel), 2023 Kojima Y +3 more
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AgronomySoil amendments are widely applied for water conservation in urban turfgrass, yet whether establishment-phase benefits persist into a mature-stand remains unclear.
Jaime Barros Silva Filho +3 more
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Engenharia Agrícola, 2005 O presente trabalho apresenta o desenvolvimento e calibração de tensiômetro de leitura automática, sendo o tensiômetro de mercúrio utilizado como padrão de comparação. Os ensaios foram conduzidos no Laboratório de Mecânica e Eletrônica do Departamento de
Adunias S. Teixeira, Silvana L. Coelho
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Matric Potential and Overburden Potential in Gels for Plant Tissue Culture.
Environment Control in Biology, 1999 本論では, 寒天とゲランガムをゲル化剤としたゲルに起因するマトリックポテンシャルについて検討した.その結果, 通常の植物組織培養で用いられるゲル化剤濃度におけるマトリックポテンシャルは, どちらのゲルでも-0.lkPa程度であり, 全水ポテンシャルに対する割合は無視できること, および培養体への水分供給の支配要因には成りえないことを明らかにした.さらに, ゲルに加えられた荷重の圧力は, 通常のゲル化剤濃度においては, 全量が荷重ポテンシャルとなり, ゲル内部の水圧を増加させることが分かった.また, ゲルからの“離しょう”が, ゲル内の水分平衡過程における排水現象として説明づけられた.しかし, ゲル培地の透水係数が極めて小さいという事実を考えると, 完全な水分平衡に至るまでには長時間を要すると考えられ,
ANNO, Taito +2 more
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Soil Water Potential in Geosciences: An Overview
GeosciencesIn geosciences, soil–water interactions are defined by soil water potential, which provides a quantitative estimate of the soil water thermodynamic state.
Shay Nachum
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Transfer matrices for piecewise constant potentials
, 2006 By expressing the time-independent Schrodinger equation in one dimension as a system of two first-order differential equations, the transfer matrix for a rectangular potential barrier is obtained making use of the matrix exponential. It is shown that the transfer matrix allows one to find the bound states and the quasinormal modes.
G. F. Torres del Castillo +1 more
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Revista Brasileira de Fruticultura, 2011 O objetivo deste trabalho foi verificar o efeito de diferentes tensões de água no solo e diferentes concentrações de boro, na fertilidade de gemas de videira cv. Itália, manejada sob o sistema de poda mista. O experimento foi conduzido em pomar comercial,
Jorbas Sampaio de Melo +1 more
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