A Case of Warthin’s Tumor Together with IgG4-Related Sialadenitis

Warthin’s tumor is the second most frequent neoplasm next to pleomorphic adenoma in the salivary gland. The tumor contains the epithelial oncocyte cells with the presence of rich-mitochondria and their surrounding abundant lymphocytes. A relatively new disease entity of IgG4-related disease frequently occurs in the salivary gland. However, the coexistence of Warthin’s tumor and IgG4-related disease is scarcely observed. We have recently experienced a rare case of Warthin’s tumor with IgG4-related sialadenitis. A 51-year-old man presented to our hospital, complaining of a mass with right submandibular tenderness and spontaneous pain. A computed tomography scan of the cervical region revealed a suspicion of lymph node proliferative disease, including malignant lymphoma. Elevated serum levels of IL-2R: 1843 U/ml (reference value 122 - 496 U/ml), IgG: 3430 mg/dl (reference value 861 - 1747 mg/dl), and IgG4: 3140 mg/dl (reference value 11 - 121 mg/dl) were observed. Other laboratory data showed within normal ranges. The cervical tumor was diagnosed as Warthin’s tumor by the findings of fine-needle aspiration cytology and biopsy examination. Immunohistochemistry revealed numerous IgG4- and IgG-positive cells with fibrosis surrounding the epithelial component of Warthin’s tumor, suggesting IgG4-rerated sialadenitis. Finally, we diagnosed the cervical tumor as Warthin tumor with IgG4-related sialadenitis. This is the second report describing a case of Warthin’s tumor with possible involvement of IgG4-related sialadenitis.

Existence of Monotone Positive Solution for a Fourth-Order Three-Point BVP with Sign-Changing Green’s Function

This paper is concerned with the following fourth-order three-point boundary value problem , where , we discuss the existence of positive solutions to the above problem by applying to the fixed point theory in cones and iterative technique.

Continuum Skyrme Hartree-Fock-Bogoliubov theory with Green’s function method for neutron-rich Ca,Ni,Zr,and Sn isotopes

The possible exotic nuclear properties in the neutron-rich Ca,Ni,Zr,and Sn isotopes are examined with the continuum Skyrme Hartree-Fock-Bogoliubov theory in the framework of the Green’s function method.The pairing correlation,the couplings with the continuum,and the blocking effects for the unpaired nucleon in odd-A nuclei are properly treated.The Skyrme interaction SLy4 is adopted for the ph channel and the density-dependentinteraction is adopted for the pp chan-nel,which well reproduce the experimental two-neutron separation energies S_(2n)and one-neutron separation energies Sn.It is found that the criterion S_(n)>0 predicts a neutron drip line with neutron numbers much smaller than those for S_(2n)>0.Owing to the unpaired odd neutron,the neutron pairing energies−E_(pair)in odd-A nuclei are much lower than those in the neighbor-ing even-even nuclei.By investigating the single-particle structures,the possible halo structures in the neutron-rich Ca,Ni,and Sn isotopes are predicted,where sharp increases in the root-mean-square(rms)radii with significant deviations from the traditional rA^(1∕3)rule and diffuse spatial density distributions are observed.Analyzing the contributions of various partial waves to the total neutron densityρlj(r)∕ρ(r)reveals that the orbitals located around the Fermi surface-particularly those with small angular momenta-significantly affect the extended nuclear density and large rms radii.The number of neutrons Nλ(N_(0))occupying above the Fermi surfacen(continuum threshold)is discussed,whose evolution as a function of the mass number A in each isotope is consistent with that of the pairing energy,supporting the key role of the pairing correlation in halo phenomena.

绿色信贷政策、ESG表现与高污染企业资本结构调整

绿色信贷政策作为结构性去杠杆的重要举措,对于高污染企业资本结构升级大有裨益。与此同时,ESG概念的提出明确了企业发展需着重考量环境(E)、社会(S)和公司治理(G)三方面的表现,即企业ESG表现也将作用于高污染企业资本结构调整。因此,论文以2011—2020年中国A股上市的高污染企业为研究样本,基于ESG表现视角,探究绿色信贷政策对高污染企业资本结构调整的作用效果。研究表明:1)绿色信贷政策显著促进高污染企业资本结构调整,区分企业负债水平后发现,相比于低负债企业,绿色信贷政策显著加快高负债污染企业的资本结构调整速度;2)绿色信贷政策会提升高污染企业的ESG表现,企业ESG表现会削弱绿色信贷政策对高污染企业资本结构调整的促进效果;3)在深入探讨企业融资约束和商业信用程度的异质性是否会影响绿色信贷政策的实施效果时,发现相较于面临弱融资约束和拥有高商业信用的企业,绿色信贷政策显著促进面临强融资约束和低商业信用的高污染企业调整资本结构。因此,探讨绿色信贷政策与高污染企业资本结构调整的关系对优化信贷资源配置、推动高污染企业绿色转型意义重大。

GREEN'S FUNCTION AND THE POINTWISE BEHAVIORS OF THE VLASOV-POISSON-FOKKER-PLANCK SYSTEM

The pointwise space-time behaviors of the Green’s function and the global solution to the Vlasov-Poisson-Fokker-Planck(VPFP)system in three dimensional space are studied in this paper.It is shown that the Green’s function consists of the diffusion waves decaying exponentially in time but algebraically in space,and the singular kinetic waves which become smooth for all(t,x,v)when t>0.Furthermore,we establish the pointwise space-time behaviors of the global solution to the nonlinear VPFP system when the initial data is not necessarily smooth in terms of the Green’s function.

Green's functions of two-dimensional piezoelectric quasicrystal in half-space and bimaterials

In this paper,we obtain Green’s functions of two-dimensional(2D)piezoelectric quasicrystal(PQC)in half-space and bimaterials.Based on the elastic theory of QCs,the Stroh formalism is used to derive the general solutions of displacements and stresses.Then,we obtain the analytical solutions of half-space and bimaterial Green’s functions.Besides,the interfacial Green’s function for bimaterials is also obtained in the analytical form.Before numerical studies,a comparative study is carried out to validate the present solutions.Typical numerical examples are performed to investigate the effects of multi-physics loadings such as the line force,the line dislocation,the line charge,and the phason line force.As a result,the coupling effect among the phonon field,the phason field,and the electric field is prominent,and the butterfly-shaped contours are characteristic in 2D PQCs.In addition,the changes of material parameters cause variations in physical quantities to a certain degree.

F_(2)O_(2)S促进吡嗪N-氧化物的合成

吡嗪N-氧化物广泛运用在有机合成、生物医药和含能材料领域。传统合成方法主要是双氧水/乙酸氧化体系,会造成环境污染,同时也限制了对酸敏感底物的使用。因此,发展吡嗪N-氧化物的绿色合成方法变得尤为迫切。以2,5-二甲基吡嗪为模板底物,通过筛选反应的投料比,碱和溶剂,得到了最优的反应条件:以甲醇为反应溶剂,底物、H_(2)O_(2)和NaHCO_(3)的物质的量之比为1.0∶1.2∶3.6,在F_(2)O_(2)S的促进下,于室温反应50 min。合成的11个吡嗪N-氧化物(2a~2k)的产率为10%~84%,其结构通过^(1)H NMR,^(13)C NMR和MS(ESI)确证。2,6-二甲氧基吡嗪的2个氮原子处于不同的化学环境,通过确认氮氧化反应的选择性,对化合物2f进行单晶X-射线衍射实验,确定该氧化反应优先发生在位阻较小的4-位N原子。该反应可以在弱碱性条件下进行,避免了酸的使用,符合绿色化学理念。

The Green's function of the harmonic horizontal force applied at the interior of the saturated half-space soil

By using integral transform methods, the Green(s functions of horizontal harmonic force applied at the interior of the saturated half-space soil are obtained in the paper. The general solutions of the Biot dynamic equations in frequency domain are established through the use of Hankel integral transforms technique. Utilizing the above- mentioned general solutions, and the boundary conditions of the surface of the half-space and the continuous conditions at the plane of the horizontal force, the solutions of the boundary value problem can be determined. By the numerical inverse Hankel transforms method, the Green(s functions of the harmonic horizontal force are obtainable. The degenerate case of the results deduced from this paper agrees well with the known results. Two numerical examples are given in the paper.

SYBR GreenⅠ实时荧光PCR检测食品中转基因成分方法的初步建立

目的:建立SYBR GreenⅠ实时荧光PCR方法检测食品中转基因成分35S启动子和NOS终止子,并对样品进行检测。方法:以大豆Lectin基因为内源性基因,以转基因食品中常用的花椰菜花叶病毒启动子(Ca MV35S)和根癌农杆菌终止子(NOS)基因为目标基因,设计并合成3对特异性引物,优化反应条件,使用SYBR GreenⅠ染料实时荧光PCR检测35S启动子和NOS终止子,并做熔解曲线分析。同时利用该方法对胡萝卜、青豆、玉米、马铃薯等实际样品进行检测。结果:运用该方法检测8份样品,有4份检出35S基因和NOS基因成分。结论:SYBR GreenⅠ实时荧光PCR方法能有效检测出35S和NOS两种转基因成分,简便、快速。

纳米分子器件量子传导中的Green's Function模型

将纳米分子器件的电极和分子本体作为一个系统,考虑到入射电子在原子电极和分子本体中的传导,在电极与分子之间界面上的透射的量子状态,在满足Fisher-Lee关系式的基础上,一个新型的Green’sFunction被设计出来。这一理论模型把三个区域上的不同量子状态完整地表达在一个方程式里,符合物理学基本原理,可以系统地用来研究纳米分子器件的量子传导特性。

(S,T)-双系上的Green′s关系及其稳定性

建立(S,T)-双系M上的Green′s关系理论.利用其基本性质讨论M的稳定性.将M的稳定性应用到半群上使得半群理论中的平行经典结果成为其特例,而有些却成为半群理论中的新结果.

猪德尔塔冠状病毒SYBR Green Ⅰ实时荧光定量PCR方法的建立及应用

为建立一种猪德尔塔病毒(PDCoV)的快速检测方法,本研究根据NCBI公布的PDCoV序列设计了1对特异性引物,利用RT-PCR方法扩增PDCoV的S基因,将其连接至pMD19-T载体上,以构建正确的重组质粒作为标准品,建立SYBR Green Ⅰ实时荧光定量PCR检测方法,并对该方法的敏感性、特异性及重复性进行了验证分析。结果显示:该检测方法在标准品浓度为6.26×10^(1)~6.26×10^(8)copies/μL范围内呈良好线性关系,其相关性为0.999,斜率为-4.312;灵敏度良好,检测下限可达6.26×10^(1)copies/μL;特异性良好,对PEDV和TGEV两种猪常见病原均无特异性扩增;重复性好,组内和组间变异系数均小于2.0%;利用该方法对43份临床样品进行检测,PDCoV阳性率为4.6%。结果表明,本研究成功建立了PDCoV的SYBR GreenⅠ实时荧光定量PCR检测方法,为PDCoV快速灵敏的诊断奠定了坚实基础。

禽呼肠孤病毒SYBR Green Ⅰ荧光定量PCR检测方法的建立

为了建立禽呼肠孤病毒(ARV)快速、敏感的检测方法。本研究利用RT-PCR技术扩增出ARV S1基因中298bp的保守序列,并克隆到p MD18-T载体中作为标准品制作标准曲线,建立了ARV的SYBR Green Ⅰ荧光定量PCR检测方法。该方法检测灵敏度可达4.8×101拷贝,与NDV、AIV、IBV、IBDV、ALV、REV均不发生交叉反应,具有良好的特异性和重复性。结果表明,建立的实时荧光定量PCR具有特异、敏感、快速、定量、重复性好等优点,可用于临床ARV的检测。

陆地水GNSS反演的格林函数和Slepian基函数比较分析

陆地水是水资源中重要的组成部分,全球气候变暖会深远地影响陆地水分布,甚至恶化区域水资源供求关系。陆地水变化关乎人类社会发展,监测陆地水变化越来越重要。锚定在地壳上的GNSS连续观测站可直接测量地表位移的不断变化并反演水文荷载,使得GNSS技术成为研究陆地水的热点。目前GNSS反演陆地水主要有格林函数和Slepian基函数两种方法,两者在数学模型上是等价的,但实际应用上存在差异。本文在研究区域(云南地区97°E—107°E、20°N—30°N)使用相同数据,定量分析格林函数和Slepian基函数反演方法的差异,结果表明:(1)基于模拟数据,格林函数反演结果受GNSS测站数量和空间展布影响程度比Slepian基函数反演结果更大,而Slepian基函数反演结果受最大截断阶数的影响较大;同等情况下,格林函数反演结果总体精度比Slepian基函数反演结果更优。(2)基于实测的“陆态网络”和气象局的GNSS连续测站垂直时间序列数据,两种方法反演等效水高结果相关性达到0.98,Slepian基函数反演结果振幅比格林函数反演结果振幅平均大25%。(3)GNSS数据反演的陆地水和GRACE、GLDAS推断的陆地水相关性均大于0.65,并且与该地区月度降水数据一致性很好;GNSS反演等效水高序列波峰出现的时间比最大降雨滞后1~2个月。

半环上的Green's-L关系

由半环的理想出发,给出了半环上的Green’s-L关系L与其乘法半群的Green’s-L关系■相等的条件,探讨了满足■=L的半环的性质,并给出了单元素■-类的刻画。

Study on Characteristics of 3-D Translating-Pulsating Source Green Function of Deep-Water Havelock Form and Its Fast Integration Method

The singularities, oscillatory performances and the contributing factors to the 3-＇D translating-pulsating source Green function of deep-water Havelock form which consists of a local disturbance part and a far-field wave-like part, are analyzed systematically. Relative numerical integral methods about the two parts are presented in this paper. An improved method based on LOBATTO rule is used to eliminate singularities caused respectively by infinite discontinuity and jump discontinuous node from the local disturbance part function, which makes the improvement of calculation efficiency and accuracy possible. And variable substitution is applied to remove the singularity existing at the end of the integral interval of the far-field wave-like part function. Two auxiliary techniques such as valid interval calculation and local refinement of integral steps technique in narrow zones near false singularities are applied so as to avoid unnecessary integration of invalid interval and improve integral accordance. Numerical test results have proved the efficiency and accuracy in these integral methods that thus can be applied to calculate hydrodynamic performance of floating structures moving in waves.

Green's functions for uniformly distributed loads acting on an inclined line in a poroelastic layered site

Based on one type of practical Biot＇s equation and the dynamic-stiffness matrices ofa poroelastic soil layer and half-space, Green＇s functions were derived for unitformly distributed loads acting on an inclined line in a poroelastie layered site. This analysis overcomes significant problems in wave scattering due to local soil conditions and dynamic soil-structure interaction. The Green＇s functions can be reduced to the case of an elastic layered site developed by Wolf in 1985. Parametric studies are then carried out through two example problems.

NONLINEAR EVOLUTION SYSTEMS AND GREEN’S FUNCTION

In this paper, we will introduce how to apply Green＇s function method to get the pointwise estimates for the solutions of Cauchy problem of nonlinear evolution equations with dissipative structure. First of all, we introduce the pointwise estimates of the time-asymptotic shape of the solutions of the isentropic Navier-Stokes equations and show to exhibit the generalized Huygen＇s principle. Then, for other nonlinear dissipative evolution equations, we will only introduce the result and give some brief explanations. Our approach is based on the detailed analysis of the Green＇s function of the linearized system and micro-local analysis, such as frequency decomposition and so on.

Green's function of multi-layered poroelastic half-space for models of ground vibration due to railway traffic

This study proposes a Green＇s function, an essential representation of water-saturated ground under moving excitation, to simulate ground borne vibration from trains. First, general solutions to the governing equations of poroelastic medium are derived by means of integral transform. Secondly, the transmission and reflection matrix approach is used to formulate the relationship between displacement and stress of the stratified ground, which results in the matrix of the Green＇s function. Then the Green＇s function is combined into a train-track-ground model, and is verified by typical examples and a field test. Additional simulations show that the computed ground vibration attenuates faster in the immediate vicinity of the track than in the surrounding area. The wavelength of wheel-rail unevenness has a notable effect on computed displacement and pore pressure. The variation of vibration intensity with the depth of ground is significantly influenced by the layering of the strata soil. When the train speed is equal to the velocity of the Rayleigh wave, the Mach cone appears in the simulated wave field. The proposed Green＇s function is an appropriate representation for a layered ground with shallow ground water table, and will be helpful to understand the dynamic responses of the ground to complicated moving excitation.

Long-term rice-rice-green manure rotation changing the microbial communities in typical red paddy soil in South China

On the basis of a long-term（30 years） field experiment that involved four rotation systems, rice-rice-winter fallow（RRF）, rice-rice-ryegrass（RRG）, rice-rice-rape（RRP）, and rice-rice-milk vetch（RRV）, this study described the effects of green manure on the microbial communities in the red paddy soils using 454 pyrosequencing for the 16 S r RNA gene. The Chao1 richness and non-parametric Shannon＇s index increased in all soil samples that received green manure treatments. The communities＇ structures with the green manure applications were significantly dissimilar from that under the winter fallow. Using Metastats tests, many genera in the RRG, RRP and RRV soils were significantly different from those in the RRF soil, including a number of genera that functioned in the nitrogen and sulfur cycles. Analyses of the genera with these functions revealed the shifts in microbial ecosystem functions after long-term green manuring. Changes in the microbial communities increased the ammonium supply and decreased the soil acidification in green-manure-amended soils. Together, these data suggested powerful effects of green manure on both the microbial communities and the biogeochemical cycle driven by the shifts in bacterial functional groups.