重叠峰解卷积在能谱面分布中的新应用

为研究重叠峰解卷积技术对能谱面分布分析结果准确性的影响,以具有重叠峰的Ti-Ba材料为研究对象,对采用重叠峰解卷积技术前后的元素能谱面分布结果进行比较。实验结果表明:未采用谱峰解卷积时,Ti元素和Ba元素的能谱面分布基本相同,但元素定量分析结果显示Ti和Ba元素并非分布在相同的区域,即未采用谱峰解卷积的Ti-Ba元素能谱面分布分析有误;而采用谱峰解卷积技术后,可以清晰地观察Ti元素和Ba元素分布在不同的区域。由此可知,对于具有重叠峰的元素能谱面分布(重叠峰元素未形成化合物),可采用重叠峰解卷积来解决元素的谱峰重叠问题。

220MW汽轮机解列调峰运行技术探讨

火电灵活性技术主要是指深度调峰、机组负荷快速升降、快速启停、热电联产机组热电解耦等内容。解列调峰是深度调峰的一种特殊工况,本文以某公司220MW汽轮机解列调峰运行技术为例展开探讨。该公司根据各机组的运行特性,在不进行设备改造和增加外部系统的情况下进行深度调峰试验,尽一切可能控制各参数不触发下限边界条件,将调峰造成的风险降到最低,以实现机组低负荷的稳定运行,调峰技术日趋成熟,为国内同容量燃煤机组深低负荷运行优化调整提供技术参考。

一类非线性Schrdinger方程的变号解（英文）

研究了下述非线性Schrdinger方程{-Δu+(1+βV(y))u=|u|p-2u,y∈RN,{U(y)→0,当|y|→+∞非径向对称的变号解的存在性.其中2<p<2N/(N-2)+,β是一个参数,V(y)>0为满足指数衰减的权函数.当β→-∞(或0-)时,对任意正整数k>1,构造了上述方程恰好有k个极大值点和k个极小值点的非径向对称的变号解.

煤系有机质部分热演化参数的变化规律及取值

根据塔东北地区 Hyc1钻孔的实际资料 ,研究了煤系有机质部分热演化参数的变化规律及取值 ,对塔东北地区和吐哈盆地的煤系烃源岩进行了对比 ,提出了确定热演化程度参数的定量方法 ,并指出了它们与湖相泥岩和海相碳酸盐岩间的差别 .

准噶尔盆地生油岩评价

一、绪言 根据石油部有关陆上勘探西移的战略方针,局有关领导指示我们开展准噶尔盆地生油岩概查的工作,为盆地近期石油勘探工作提供生油岩评价方面的资料。 为完成这一任务,我们从1979年起开始组队出野外采集生油岩样品,并采集可能采集到的液体原油和地表油苗样品。自1979年至1981年采集了42条剖面。

A Novel Class of Coherent Localized Structures for the Maccari System

By means of the Baecklund transformation, a quite general variable separation solution of the (2+1)-dimensional Maccari systems is derived. In addition to some types of the usual localized excitations such as dromion, lumps, ring soliton and oscillated dromion, breathers solution, fractal-dromion, fractal-lump and chaotic soliton structures can be easily constructed by selecting the arbitrary functions appropriately, a new novel class of coherent localized structures like peakon solution and compacton solution of this new system are found by selecting apfropriate functions.

Overlapped peaks resolution for linear sweep polarography using Gaussian-like distribution

A resolution method based on Gaussian-like distribution for overlapped linear sweep polarographic peaks was proposed to simultaneously detect the polymetallic components, such as Zn（Ⅱ） and Co（Ⅱ）, coexisting in the leaching solution of zinc hydrometallurgy. A Gaussian-like distribution was constructed as the sub-model of overlapped peaks by analyzing the characteristics of linear sweep polarographic curve. Then, the abscissas of each peak and trough were pinpointed through multi-resolution wavelet decomposition, the curve and its derivative curves were fitted by using nonlinear weighted least squares （NWLS）. Finally, overlapped peaks were resolved into independent sub-peaks based on fitted reconstruction parameters. The experimental results show that the relative error of half-wave potential pinpointed by multi-resolution wavelet decomposition is less than 1% and the accuracy of Ip fitted by NWLS is higher than 96%. The proposed resolution method is effective for overlapped linear sweep polarographic peaks of Zn（Ⅱ） and Co（Ⅱ）.

Existence of multi-bump solutions for coupled Schr dinger systems

The Schrodinger equation -△u＋λ2u=｜u｜2q-2u has a unique positive radial solution Uλ, which decays exponentially at infinity. Hence it is reasonable that the Schrolinger system -△u1＋u1=｜u1｜2q-1u1-εb（x）｜u2｜1｜u1｜q-1u1,-△u2＋u2=｜u2｜2q-2u2-εb（x）｜u1｜1｜u2｜q-1u2 has multiple-bump solutions which behave like Uλ in the neighborhood of some points. For u=（u1,u2）∈H1（R3）×H1（R3）, a nonlinear functional Iε（u）=I1（u1）＋I2（u2）-ε/q∫R3b（x）｜u1｜q｜u2｜qdx,is defined,where I1（u1）=1/2｜｜u1｜｜2-1/2q∫R3｜u1｜2qdx and I2（u2）=1/2｜｜u2｜｜2ω-1/2q∫R3｜u2｜2qdx. It is proved that the solutions of the system are the critical points of I,. Let Z be the smooth solution manifold of the unperturbed problem and TzZ is the tangent space. The critical point of I is rewritten as the form of z ＋ w, where w ∈ （TzZ）⊥. Using some properties of Iε, it is proved that there exists a critical point of I, close to the form which is a multi-bump solution.

镜质体反射率Ro与热解峰温Tmax的关系——以南堡凹陷中深层烃源岩为例

镜质体反射率Ro作为烃源岩成熟度的判断标准,是因为镜质体反射率Ro值变化的不可逆决定的。Ro是从煤岩学中借鉴的指标,意在表示煤阶的演化程度。在石油地质中,Ro表示烃源岩的热演化程度,但镜质体是由高等植物的木质纤维素形成的,在海相烃源岩(Ⅰ型干酪根)中是不存在的,因此运用Ro判断烃源岩的热成熟度有其局限性。应用烃源岩热解技术中参数S2的最高热解峰温Tmax为主要指标判断烃源岩的热成熟度,不受地质条件限制,且可以更快的达到目的。本文就南堡凹陷中深层烃源岩Ro和Tmax的关系,进行初步探讨,从中找出规律性。

准噶尔盆地玛X井风城组页岩油含油性与岩性特征关系研究

近两年,随着准噶尔盆地玛湖凹陷风城组碱湖相页岩油的大力开发,页岩油大油区初步展现,勘探意义重大。鉴于页岩油含油性以及烃类赋存状态是页岩油甜点评价与优选的关键,以玛X井风城组页岩油岩心样品为研究对象,采用岩石热解分析、残余碳分析、X射线衍射分析、X射线荧光元素分析等技术,开展页岩油含油性与烃类赋存状态研究,并通过岩性分析找到页岩油含油性与岩性特征之间的关系。研究表明,玛湖凹陷风城组页岩油中,含油性与矿物分析中白云石含量负相关,与元素分析中镁、硅、钙相关性明显。研究成果为风城组页岩油进一步勘探开发提供了理论依据和技术支撑。

Application of a joint algorithm based on L-T to pulse pressure detection signal of fiber Fabry-Perot nano pressure sensor

An improved denoising method and its application in pulse beat signal denoising are studied.The proposed denoising algorithm takes the advantages of local mean decomposition(LMD)and time-frequency peak filtering(TFPF),called L-T algorithm.As a classical time-frequency filtering method,TFPF can effectively suppress random noise with signal amplitude retained when selecting a longer window length,while the signal amplitude will be seriously attenuated when selecting a shorter window length.In order to maintain effective signal amplitude and suppress random noise,LMD and TFPF are improved.Firstly,the original signal is decomposed into progression-free survival(PFS)by LMD,and then the standard error of mean(SEM)of each product function is calculated to classify many PFSs into useful component,mixed component and noise component.Secondly,by using the shorter window TFPF for useful component and the longer window TFPF for mixed component,noise component is removed and the final signal is obtained after reconstruction.Finally,the proposed algorithm is used for noise reduction of an Fabry-Perot(F-P)pressure sensor.Experimental results show that compared with traditional wavelet,L-T algorithm has better denoising effect on sampled data.

Model building for Chang-8 low permeability sandstone reservoir in the Yanchang formation of the Xifeng oil field

In order to build a model for the Chang-8 low permeability sandstone reservoir in the Yanchang formation of the Xifeng oil field,we studied sedimentation and diagenesis of sandstone and analyzed major factors controlling this low permeability reservoir.By doing so,we have made clear that the spatial distribution of reservoir attribute parameters is controlled by the spatial distribution of various kinds of sandstone bodies.By taking advantage of many coring wells and high quality logging data,we used regression analysis for a single well with geological conditions as constraints,to build the interpretation model for logging data and to calculate attribute parameters for a single well,which ensured accuracy of the 1-D vertical model.On this basis,we built a litho-facies model to replace the sedimentary facies model.In addition,we also built a porosity model by using a sequential Gaussian simulation with the lithofacies model as the constraint.In the end,we built a permeability model by using Markov-Bayes simula-tion,with the porosity attribute as the covariate.The results show that the permeability model reflects very well the relative differences between low permeability values,which is of great importance for locating high permeability zones and forecasting zones favorable for exploration and exploitation.

ON THE FEIGENBAUM'S FUNCTIONAL EQUATION_f^P (λx )=λf (x)

The author considers the Feigenbaum's functional equation fP(λx) =λf(x) for each p ≥ 2.The existence of even unimodal C1 solutions to this equation is discussed and a feasible methodto construct such solutions is given.

Single Peak Soliton and Periodic Cusp Wave of the Generalized Schrodinger-Boussinesq Equations

In this paper, we study peakon, cuspon, smooth soliton and periodic cusp wave of the generalized Schr6dinger-Boussinesq equations. Based on the method of dynamical systems, the generalized Schr6dinger-Boussinesq equations are shown to have new the parametric representations of peakon, cuspon, smooth solRon and periodic cusp wave solutions. Under different parametric conditions, various sufficient conditions to guarantee the existence of the above solutions are g/van.