Legionella pneumonia complicated with rhabdomyolysis and acute kidney injury diagnosed by metagenomic nextgeneration sequencing: a case report

The triad of Legionella pneumonia,rhabdomyolysis,and acute kidney injury(AKI)is uncommon but can be devastating.[1]It is vital to recognize Legionella species early as a potential cause of pneumonia.Legionella infection remains underdiagnosed because of the nonspecific nature of clinical features and the shortcomings of routinely available diagnostic tests.[2]Metagenomic next-generation sequencing(mNGS)is a culture-free and hypothesis-free diagnostic method that can rapidly identify almost all known pathogens in a sample.[3]Here,we present a successfully cured case of rhabdomyolysis and AKI caused by Legionella pneumophila with etiologic diagnosis aided by the use of mNGS.

大白菜和甘蓝CBL基因的鉴定和比较分析

植物CBL基因在逆境应答及发育过程中具有重要功能。然而,有关重要蔬菜大白菜和甘蓝CBL的研究缺乏报道。笔者在大白菜和甘蓝CBL基因组解析的基础上,对它们进行了系统比较。结果发现,大白菜和甘蓝都有16个CBL基因,它们分别位于不同的染色体上,编码区序列大小相似,在序列组成、基因结构和内含子数目上相对保守,在顺式调控元件上存在一定差异。这说明大白菜和甘蓝的CBL家族成员存在功能上的分化。本研究为进一步解析大白菜和甘蓝CBL基因在逆境应答中的功能提供了有益启示。

Intelligent droplet tracking with correlation filters for digital microfluidics

Tracking the movement of droplets in digital microfluidics is essential to improve its control stability and obtain dynamic information for its applications such as point-of-care testing,environment monitoring and chemical synthesis.Herein,an intelligent,accurate and fast droplet tracking method based on machine vision is developed for applications of digital microfluidics.To continuously recognize the transparent droplets in real-time and avoid the interferes from background patterns or inhomogeneous illumination,we introduced the correlation filter tracker,enabling online learning of the multi-features of the droplets in Fourier domain.Results show the proposed droplet tracking method could accurately locate the droplets.We also demonstrated the capacity of the proposed method for estimation of the droplet velocity as faster as 20 mm/s,and its application in online monitoring the Griess reaction for both colorimetric assay of nitrite and study of reaction kinetics.

低能强流混合离子束空间电荷补偿度研究

空间电荷效应是影响束流传输和束流品质的一个重要因素,特别是对于低能量强流离子束来说。离子束与束流传输线中的剩余气体分子通过电离反应等产生大量二次电子,受离子束的空间电势约束,可以部分补偿空间电荷效应。为了深入研究强流束在低能段的传输,需要准确测量束流的空间电荷补偿度(SCCD),尤其是混合束流的SCCD。利用一台三栅网式能量分析仪和一台基于128通道皮安表系统构成的束流剖面探测器,分别测量了不同流强和束流分布下的混合O离子束的二次离子能量分布和束流流强分布,从而计算得出SCCD。实验结果表明,在1.0×10^(−5) Pa的真空度下,不同流强的混合O离子束的SCCD基本在70%左右;不同束流分布对空间电势分布影响较大,对离子束的SCCD也会有一定程度的影响。

Automorphism group of Green ring of Sweedler Hopf algebra

Let H2 be Sweedler＇s 4-dimensional Hopf algebra and r（H2） be the corresponding Green ring of H2. In this paper, we investigate the automorphism groups of Green ring r（H2） and Green algebra F（H2） = r（H2） zF, where F is a field, whose characteristics is not equal to 2. We prove that the automorphism group of r（H2） is isomorphic to K4, where K4 is the Klein group, and the automorphism group of F（H2） is the semidirect product of Z2 and G, where G = F ／ {1/2} with multiplication given by a. b = 1 - a - b ＋ 2ab.

Irreducible Z＋-modules of near-group fusion ring K（Z3, 3）

The near-group rings are an important class of fusion rings in the theory of tensor categories. In this paper, the irreducible Z＋-modules over the near-group fusion ring K（Z3, 3） are explicitly classified. It turns out that there are only four inequivalent irreducible Z＋-modules of rank 2 and two inequivalent irreducible Z＋-modules of rank 4 over K（Z3, 3）.

Ideals of Finite-Dimensional Pointed Hopf Algebras of Rank One

Let H be a finite-dimensional pointed Hopf algebra of rank one over an algebraically closed field of characteristic zero.In this paper we show that any finitedimensional indecomposable H-module is generated by one element.In particular,any indecomposable submodule of H under the adjoint action is generated by a special element of H.Using this result,we show that the Hopf algebra H is a principal ideal ring,i.e.,any two-sided ideal of H is generated by one element.As an application,we give explicitly the generators of ideals,primitive ideals,maximal ideals and completely prime ideals of the Taft algebras.

The Automorphism Group of Green Algebra of 9-Dimensional Taft Hopf Algebra

Let H3 be the 9-dimensional Taft Hopf algebra,let r(H3)be the corresponding Green ring of H3,and let Aut(R(H3))be the automorphism group of Green algebra R(H3)=R■Zr(H3)over the real number fieldR.We prove that the quotient group Aut(R(H3))/T1 is isomorphic to the direct product of the dihedral group of order 12 and the cyclic group of order 2,where T1 is the isomorphism class which contains the identity map and is isomorphic to a group G={(c,d)∈R^(2)∣∣(c,d)≠(−1/3,−1/6)}with multiplication given by(c1,d1)⋅(c2,d2)=(c1+c2+2c1c2−4d1d2+2c1d2+2d1c2,d1+d2−2c1c2−2d1d2+4c1d2+4d1c2).

McKay Matrices for Pointed Rank One Hopf Algebras of Nilpotent Type

Let H be a finite-dimensional pointed rank one Hopf algebra of nilpotent type over a finite group G.In this paper,we investigate the McKay matrix WV of H for tensoring with the 2-dimensional indecomposable H-module V:=M(2,0).It turns out that the characteristic polynomial,eigenvalues and eigenvectors of WV are related to the character table of the finite group G and a kind of generalized Fibonacci polynomial.Moreover,we construct some eigenvectors of each eigenvalue for WV by using the factorization of the generalized Fibonacci polynomial.As an example,we explicitly compute the characteristic polynomial and eigenvalues of WV and give all eigenvectors of each eigenvalue for WV when G is a dihedral group of order 4N+2.

Double Frobenius algebras

Some equivalent conditions for double Frobenius algebras to be strict ones are given. Then some examples of （strict or non-strict） double Frobenius algebras are presented. Finally, a sufficient and necessary condition for the trivial extension of a double Frobenius algebra to be a （strict） double Frobenius algebra is given.

On the centers of quantum groups of A_n-type

Let g be the finite dimensional simple Lie algebra of type A_n, and let U = U_q(g,Λ)and U= U_q(g,Q)be the quantum groups defined over the weight lattice and over the root lattice, respectively. In this paper, we find two algebraically independent central elements in U for all n ≥ 2 and give an explicit formula of the Casimir elements for the quantum group U = U_q(g,Λ), which corresponds to the Casimir element of the enveloping algebra U(g). Moreover, for n = 2 we give explicitly generators of the center subalgebras of the quantum groups U = U_q(g,Λ) and U = U_q(g,Q).