混合幂为1,1,3和k的丢番图不等式

设k是大于或等于3的正整数,η是任意给定的实数,假设λ_1,λ_2,λ_3,λ_4是非零实数,不全同号,并且λ_1/λ_2是无理数,则不等式|λ_1p_1+λ_2p_2+λ_3p■+λ_4p■+η|(maxp_j)~(-σ)有无穷多组素数解p_1,p_2,p_3,p_4,这里■     

一个算术数列中素变数丢番图逼近

证明了如果λ1,λ2,λ3是非零实数,并且不同一符号,η是实数,λ1/λ2是无理数,h是给定的正整数,l1,l2,l3是整数,假设GRH成立,那么有无穷多有序素数对p1,p2,p3(p1(=)l1(mod h),j=1,2,3)使得|λ1p1 λ2p2 λ3p3 η|＜(max p1)-1-4(log max pi)4.     

一个加性混合幂丢番图不等式

证明了如果η是实数, λ1,μ1,μ2,μ3,μ4,θ1,θ2是非零实数,并且不同一符号,至少有一个λ1/μj (i=1,2,3,4)是无理数, 那么对任意0<σ<1/30,不等式|λ1x21+μ1x32+μ2x33+μ3x34+μ4x35+θ1x46+θ2x57+η|<(max|xi|)-σ有无穷多整数解x1,...,x7.     

素变量混合幂丢番图逼近

设k是大于或等于的正整数,η是任意给定的实数,λ_1,λ_2,λ_3,λ_4是非零实数不全同号,并且λ_1/λ_2是无理数,则不等式|λ_1p_1~2+λ_2p_2~2+λ_3p_3~2+λ_4p_4~k+η|(maxp_j)~(-σ)有无穷多组素数解p_1,p_2,p_3,p_4,这里σ=1/8(k+8/k)+ε,ε0.     

素变量混合幂丢番图方程

目的研究素变量p_j对不等式|λ_1p_1+λ_2p_2~2+λ_3p_3~3+λ_4p_4~k+η|≤(maxp_j)~(-σ)有无穷多组素数解时的情况下σ的取值,其中1k24/13,η是任意给定的实数,λ_1,λ_2,λ_3,λ_4是非零实数不全同号,且λ_1/λ_2是无理数。方法使用Davenport-Heilbronn方法来计算。结果与结论得到maxp_j的指数估计为σ=1/48(24-13k/k)+ε,ε0。     

素数的一次与k次方非线性型的整数部分

利用Davenport-Heilbronn方法证明了|λ1p1+λ2p2+λ3pk3+η|<ε在给定条件下有无穷多素数解p1,p2,p3.进而得到在一定条件下,存在无穷多素数p,p1,p2,使得[λp1+μpk2]=mp.特别地,[λp1+μpk2]可表示无穷多素数.     

两个素数和一个素数k次方和的丢番图逼近

目的改进不等式︱λ_1p_1+λ_2p_2+λ_3p_3~k+η︱(maxpj)-σ中σ的结果,当k是大于或等于5的正整数,η是任意给定的实数,λ_1,λ_2,λ_3是非零实数,不同号,并且λ1/λ2是无理数,则不等式有无穷多组素数解p_1,p_2,p_3。方法使用Davenport-Heilbronn方法进行研究。结果与结论得出了σ满足:当k≥5时,0σ4/(5k(k+1)k),所得的结果优于前人结论。     

H~3上具有混合非线性项的非线性Schrdinger方程

利用扰动分析方法,通过研究双曲空间H~3上非线性Schrdinger方程i_tu+Δ_gu=λ_1|u|~(p_1)u+λ_2|u|~(p_2)u的散射,得到了Euclid空间瓗3上类似的结果在双曲空间H~3上成立,其中λ_1,λ_2是非零实数,且0p_1p_2≤4.     

非线性项含临界指数的p - Laplace方程的解的存在性

证明了当λ>0时p -LaplaceDirichlet问题-div (| u| p - 2 u) =λ|u| q - 2 u + |u| p - 2 u ,u∈W1.p0 (Ω)无穷多解的存在性 ,其中Ω是RN 中的有界域 ,1相似文献   

一个素变量混合幂丢番图不等式

目的证明素数p_j对不等式︱λ_1p_1+λ_2p_2~2+λ_3p_3~2+λ_4p_4~k-v︱(maxp_j)~(-1/8σ(k)+ε)有无穷多个解,其中k是大于或等于3的正整数,ε0,v是任意给定的实数,σ(k)=min(2~(s(k)-1),1/2(s(k)+1)),s(k)=[k+1/2],假设λ_1,λ_2,λ_3,λ_4是非零的实数,并且λ_1/λ_2是无理数。方法使用Davenport-Heilbronn方法来改进这一结果。结果与结论 maxp_j的指数估计为-1/8σ(k)+ε。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.