共查询到20条相似文献,搜索用时 140 毫秒
1.
记述在湖北,河南采到的螽斯二新种:尖叶素木螽Shirakisotimaacuminatasp.nov.,短裂素木螽Shirakisotimabreuifissasp.nor.模式标本保存在中国科学院上海昆虫研究及山东大学生物系。 相似文献
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记述在湖北、河南采到的螽斯二新种:尖叶素木螽Shirakisotimaacumi.natasp·nov·,短裂素木螽Shirakisotimabrevifissasp.nor.模式标本保存在中国科学院上海昆虫研究所及山东大学生物系. 相似文献
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报道了螽斯总科蛩螽科一新种,缙云隐翅螽Acyrtaspisjinyunensissp.nov;螽斯科一新种,黄山寰螽Atlanticushuangshanensissp.nov.模式标本均保存于陕西师范大学动物研究所. 相似文献
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河南省螽斯类初步调查(直翅目) 总被引:3,自引:0,他引:3
首次系统报道河南省螽斯类33属,57种,其中记述5个新种。即:素色杆蟋螽Phryganogrylacrisunicolor,sp.nov.;短突平背螽Isopserabrachystylata,sp.nov.;黑膝饰尾螽Cosmeturanigrogeniculata,sp.nov.;中华赢蛩螽Nipponomeconemasinica,sp.nov.;河南杉螽Thau-maspishenanensis,sp.nov.。模式标本存中国科学院上海昆虫研究所。 相似文献
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论述在安徽、江西、浙江及辐射采到的螽斯二新种:宽肛掩耳螽(Blimaea megalopygmaea.sp.nov),叶肛掩耳螽(Blimaea foliata sp.nov).模式标本均保存在山东大学生物系。 相似文献
6.
论述在安徽、江西、浙江及福建采到的螽斯二新种:宽肛掩耳螽(Blimaeamegalopygmaea.sp.nov),叶肛掩耳螽(Blimaeafoliatasp.nov.).模式标本均保存在山东大学生物系 相似文献
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对采自西安的斑腿沙螽Tachycineselegantisimus(Grifini)的染色体进行了分析.结果显示,核型为2n♂=31(18m+2sm+10t+X);组式为2n=2L+14M+14S+X;NF=52.对该种沙螽的C带核型研究表明,斑腿沙螽的异染色质含量为30.33%. 相似文献
9.
比氏康螽(CononaluspielicTinkham)是直翅目螽斯科昆虫,主要生活在海拔1000m左右的浅山地带,以捕食竹林中其它昆虫及小型动物为生.经过1986—1987年在四川卧龙自然保护区、木江坪保护站对比氏康螽进行的生活史系统观察,发现此种昆虫在这个区以卵越冬,一年仅发生一代,若虫有五龄.雌性成虫喜将印产在杂草的根基部. 相似文献
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Denoted by M(A), QM(A) and SQM(A) the sets of all measures, quantum measures and subadditive quantum measures on a σ-algebra A, respectively. We observe that these sets are all positive cones in the real vector space F(A) of all real-valued functions on A and prove that M(A) is a face of SQM(A). It is proved that the product of m grade-1 measures is a grade-m measure. By combining a matrix M
μ to a quantum measure μ on the power set A
n
of an n-element set X, it is proved that μ ≪ ν (resp. μ ⊥ ν) if and only if M
μ ≪ M
ν
(resp. M
μ
M
ν
=0). Also, it is shown that two nontrivial measures μ and ν are mutually absolutely continuous if and only if μ·ν∈QM(A
n
). Moreover, the matrices corresponding to quantum measures are characterized. Finally, convergence of a sequence of quantum
measures on A
n
is introduced and discussed; especially, the Vitali-Hahn-Saks theorem for quantum measures is proved. 相似文献
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线性交换子的加权估计 总被引:2,自引:2,他引:0
多线性交换子Tb(f)(x)=∫Rn∏i=1m(bi(x)-bi(y))k(x,y)f(y)dy在Lp(Rn)(1
K是一个标准的Calderón-Zygmund核.主要研究交换子Mf(x)=supx∈Q∫Q|f(y)|dy,其中f∈Lloc(Rn),x∈Rn,Q是任何包含x的方体,并用Sharp极大估计得到了该多线性交换子在Herz空间的一个加权有界性. 相似文献
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设m,p,n是正整数且p整除m。令G(m,p,n)是非本原复反射群.根据文献介绍了群G(m,p,n)中的一种偏序,称为反射序.文中将研究当1 < p < m时,群G(m,p,n)中的反射序. 相似文献
18.
The paper is concerned with some chemotaxis model ∂u/∂t=D▿(u▿ln(u/w))+u(a−bu),∂w/∂t=f(u,w). To study the behavior of the solution, some function transformations are introduced, and the main tool is sup-sub-solution
method. The result shows that, whether the solution blows up in finite time depends on the parameters and the initial data.
As the chemical substance w has linear growth, f(u,w)=βu−δw, where β>0, δ>0 and a+δ>0, wherein the solution exists globally. However, as w possesses exponential growth, f(u,w)=(βu−δ)w, wherein both u and w share the same blowup point and time if the solution blows up in finite time.
Biography: CHEN Hua(1956–), male, Professor, Ph. D., research direction: partial differential equation and its application. 相似文献
19.
An allowable generalized quantum gate (introduced by Long, Liu and Wang) has the form of U = Σ
k=0
d−1
c
k
U
k
, where U
k’s are unitary operators on a Hilbert space H and |Σ
k=0
d−1
c
k
|⩽1 and |c
k
|⩽1 (0⩽k⩽d−1). In this work we consider a kind of AGQGs, called restricted allowable generalized quantum gates (RAGQGs), satisfying
0 < Σ
k=0
d−1|c
k
|⩽1. Some properties of the set RAGQG(H) of all RAGQGs on H are established. Especially, we prove that the extreme points of RAGQG(H) are exactly unitary operators on H and that B(H)=R
+
RAGQG(H). 相似文献
20.
设A_r为复平面中的圆环{z:r|z|1},L_a~2(A_r)为A_r上的Bergman空间.从局部逆的代数结构的新视角研究解析Toeplitz算子的约化子空间.首先证明L_a~2(A_r)上Toeplitz算子T_(z~N)的交换子的表示,再次证明zN的全体局部逆组成的集合在复合映射下是循环群,最后证明了循环群的特征与Toeplitz算子T_(z~N)的极小约化子空间是一一对应的. 相似文献