Zobrazeno 1 - 10
of 63
pro vyhledávání: '"曾 云"'
Autor:
罗李平(LUO Liping), 曾云辉(ZENG Yunhui)
Publikováno v:
Zhejiang Daxue xuebao. Lixue ban, Vol 51, Iss 4, Pp 434-437 (2024)
The oscillation problem is investigated for a class of nonlinear impulsive delay hyperbolic equations with damping term. By employing the technique of treating damping term and some known results on first order impulsive delay differential inequaliti
Externí odkaz:
https://doaj.org/article/a168465563de448e878274cce5b1bd1b
Publikováno v:
Zhejiang Daxue xuebao. Lixue ban, Vol 51, Iss 1, Pp 5-13 (2024)
The purpose of this paper is to establish some new oscillation criteria for the second-order nonlinear neutral differential equations with damping terms which have the form [a(t)z'(t)α-1z'(t)]'+b(t)z'(t)α-1z'(t)+q(t)x(σ(t))β-1x(σ(t))=0， where
Externí odkaz:
https://doaj.org/article/d7204326e57e4bfd9ea74d6ee788c180
Publikováno v:
Zhongguo youzhi, Vol 48, Iss 4, Pp 149-152 (2023)
为提高工作效率，降低误差，建立分子印迹柱全自动固相萃取净化-高效液相色谱法测定食用植物油中苯并（a）芘含量的方法。样品经正己烷提取，采用全自动固相萃取仪进行分子印迹柱净
Externí odkaz:
https://doaj.org/article/b5f26b67ec864b8ea774ecf28d41ba35
Publikováno v:
Zhongguo youzhi, Vol 47, Iss 2, Pp 16-23 (2022)
采用不同温度、时间红外预热处理紫苏籽，探讨其对压榨紫苏籽油品质（包括理化指标、脂肪酸组成、褐变程度、活性成分含量）、抗氧化活性及氧化稳定性的影响。结果表明：经红外预热
Externí odkaz:
https://doaj.org/article/6f9f6f54bbff423e989e9d4bcda22964
Publikováno v:
Journal of Zhejiang University (Science Edition); Jul2024, Vol. 51 Issue 4, p434-442, 5p
Publikováno v:
Urban Mass Transit; 2024, Vol. 27 Issue 7, p120-126, 7p
Publikováno v:
Journal of Zhejiang University (Science Edition); Jan2024, Vol. 51 Issue 1, p5-13, 9p
Publikováno v:
Zhejiang Daxue xuebao. Lixue ban, Vol 43, Iss 4, Pp 394-400 (2016)
研究了一类具有阻尼项的广义中立型Emden-Fowler时滞微分方程的振动性.利用Riccati变换、积分平均技巧等方法，获得了该方程解振动的充分条件，所得结果推广和改进了最近研究中的一些结果.
Externí odkaz:
https://doaj.org/article/729104cef4764da886a24a710aad547a
Publikováno v:
Journal of Modern Medicine & Health. 3/30/2022, Vol. 38 Issue 6, p1013-1015. 3p.
Publikováno v:
China Dairy; 2024, Issue 7, p98-101, 4p