检索结果-南通市图书馆

The Fourth Power Mean of the General 3-dimensional Kloostermann Sums mod p

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2019年第3期35卷 369-377页

作者： Wen Peng ZHANG xing xing lv School of Mathematics Northwest University

The main purpose of this paper is using the analytic methods, the solutions of the congruence equation mod p and the properties of Gauss sums to study the computational problem of one kind fourth power mean of the gen... 详细信息

关键词： The general 3-dimensional Kloostermann sums the fourth power mean dirichlet character asymptotic formula

在线全文

学校读者我要写书评

暂无评论

三次Gauss和及二项指数和的混合均值

数学学报（中文版） 2019年第2期62卷 225-232页

作者：吕星星西北大学数学学院西安710127

我们用三角和的性质研究一类三次Gauss和与两项指数和混合均值的计算问题,并给出一个精确的计算公式.

关键词：三次Gauss和二项指数和混合均值解析方法计算公式

在线全文

学校读者我要写书评

暂无评论

多项式的特征和及其L-函数

数学学报（中文版） 2019年第6期62卷 903-912页

作者：张佳凡吕星星西北大学数学学院

本文使用解析方法及特征和的性质研究了一类多项式的特征和与模p的狄利克莱L-函数的混合幂均值的计算问题,并给出了它们的一些计算公式.

关键词：狄利克莱L-函数多项式的特征和混合幂均值解析方法计算公式

在线全文

学校读者我要写书评

暂无评论

微生物燃料电池技术的研究进展

现代化工 2017年第8期37卷 41-44页

作者：卓露汪兴兴吕帅帅黄明宇倪红军南通大学机械工程学院江苏南通226019

针对MFC产电性能低下的现状,结合其发展趋势,综述了MFC工作原理及电子转移机制,分析了MFC在质子交换膜和电极材料改善等方面未来发展的主要方向及面临的问题,为提高MFC的产电性能和除污能力提供新思路。

关键词：微生物燃料电池电子转移机制产电性能

On the Seidel Integral Complete Multipartite Graphs

在线全文

学校读者我要写书评

暂无评论

Acta Mathematicae Applicatae Sinica 2012年第4期28卷 705-710页

作者： Sheng-mei lv Liang WEI Hai-xing ZHAO Department of Mathematics Qinghai Nationality University Department of Mathematics Qinghai Normal University

For a simple undirected graph G, denote by λ（G） the （0, 1）-adjacency matrix of G. Let the matrix S（G） = J-I-2A（G） be its Seidel matrix, and let SG（A） = det（AI-S（G）） be its Seidel characteristic polynomial, where I is an identity matrix and J is a square matrix all of whose entries are equal to 1. If all eigenvalues of SG（λ） are integral, then the graph G is called S-integral, In this paper, our main goal is to investigate the eigenvalues of SG（A） for the complete multipartite graphs G = Kn1,n2,...,n,. A necessary and sufficient condition for the complete tripartite graphs Km,n,t and the complete multipartite graphs Km,.... m,n,...,n to be S-integral is given, respectively.

关键词： S-polynomial S-integral complete multipartite graphs

Biodegradable,superhydrophobic walnut wood membrane for the separation of oil/water mixtures

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2022年第9期16卷 1377-1386页

作者： Tong xing Changqing Dong Xiaodong Wang Xiaoying Hu Changrui Liu Haiyang lv National Engineering Laboratory for Biomass Power Generation Equipment School of New EnergyNorth China Electric Power UniversityBeijing 102206China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing 102206China National Energy Biological Power Generation Group Corporation LTD Beijing 100052China

The preparation of environmentally friendly oil/water separation materials remains a great ***-drying of wood after lignin removal yields wood aerogels,which can be used as substrates to prepare fluorine-free environmentally friendly superhydrophobic materials,However,they are more suitable for absorption rather than filtration applications due to their poor strength.A study using cross-sections of pristine wood chips as substrates retains the original strength of wood,but the use of the cross-sectional of wood pieces limits their thickness,strength,and *** this paper,a degradable fluorine-free superhydrophobic film(*** contact angle of approximately 164.2°)with self-cleaning and abrasion resistance characteristics was prepared by a one-step method using pristine and activated walnut longitudinal section films as the substrate,with tetraethyl orthosilicate as a precursor and dodecyltriethoxysilane as a *** tensile strength results show that superhydrophobic films with pristine or activated wood substrates maintained the strength of pristine wood and were 2.2 times stronger than the wood aerogel *** addition,after cross-laminating the two samples,the films had the ability to separate oil and water by continuous filtration with high efficiency(98.5%)and flux(approximately 1.3×10^(3)L∙m^(‒2)∙h^(‒1)).The method has potential for the large-scale fabrication of degradable superhydrophobic filtration separation membranes.

关键词： wood nanotechnology superhydrophobic biodegradable surface modification oil/water separation

Reduction in thermal conductivity of monolayer WS_(2) caused by substrate effect

在线全文

学校读者我要写书评

暂无评论

Nano Research 2022年第10期15卷 9578-9587页

作者： Yufeng Zhang Qian lv Aoran Fan Lingxiao Yu Haidong Wang Weigang Ma Ruitao lv xing Zhang Key Laboratory for Thermal Science and Power Engineering of Ministry of Education Department of Engineering MechanicsTsinghua UniversityBeijing 100084China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Key Laboratory of Advanced Materials(MOE) School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Understanding the substrate and temperature effect on thermal transport properties of transition metal dichalcogenides(TMDs)monolayers are crucial for their future ***,a dual-wavelength flash Raman(DF-Raman)method is used to measure the thermal conductivity of monolayer WS_(2) at a temperature range of 200–400 *** measurement accuracy can be guaranteed in this method since the influence of both the laser absorption coefficient and temperature-Raman coefficient can be eliminated through *** room-temperature thermal conductivity of suspended and supported WS_(2) are 28.5±2.1(30.3±2.0)and 15.4±1.9(16.9±2.1)W/(m·K),respectively,with a~50%reduction due to substrate *** dynamics(MD)simulations reveal that the suppression of acoustic phonons is mainly responsible for the striking *** behaviors of optical phonons are also unambiguously investigated using Raman spectroscopy,and the in-plane optical mode,E(Γ),is surprisingly found to be slightly enhanced while out-of-plane mode,A1g(Γ),is suppressed due to substrate interaction,mutually verified with MD *** study provides a solid understanding of the phonon transport behavior of WS_(2) with substrate interaction,which provides guidance for TMDs-based nanodevices.

关键词： monolayer WS_(2),thermal conductivity,substrate effect,temperature effect,dual-wavelength flash Raman(DF-Raman)method

Writing with a nano-grooved pin

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2019年第9期62卷 1649-1654页

作者： DONG HuaLai YANG xing lv CunJing WANG Jin ZHENG QuanShui State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing 100084China Center for Nano and Micro Mechanics Tsinghua UniversityBeijing 100084China Department of Engineering Mechanics Tsinghua UniversityBeijing 100084China

As a basic technology, dispensing liquid into small droplets is widely used in many nowadays technologies, such as 3D printing [I-4], biological/chemical patterning [5-7], and drug discovery [8,9]. Traditional transfer methods by pipette or pin, which may date to 4000 years ago [10], are simple and cheap to generate droplets bigger than μ100 pm [11] for most materials.

关键词： technology droplets materials

Long noncoding RNA TARL promotes antibacterial activity and prevents bacterial escape in Miichthys miiuy through suppression of TAK1 downregulation

在线全文

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2023年第6期66卷 1340-1357页

作者： Weiwei Zheng xing lv Shiying Xin Yuena Sun Tianjun Xu Laboratory of Fish Molecular Immunology College of Fisheries and Life ScienceShanghai Ocean UniversityShanghai201306China Laboratory of Marine Biology and Biotechnology Qingdao National Laboratory for Marine Science and TechnologyQingdao266237China Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources Shanghai Ocean UniversityMinistry of EducationShanghai201306China National Pathogen Collection Center for Aquatic Animals Shanghai Ocean UniversityShanghai201306China

Noncoding RNA(ncRNA)is an important regulatory factor that plays a major role in innate ***,most studies on ncRNA have focused on mammals,resulting in a knowledge gap on nc RNA in lower vertebrates such as teleost *** this study,we identified a new long noncoding RNA(lncRNA),termed TAK1-related lnc RNA(TARL),which can play a positive role in the antibacterial immunity of Miichthys miiuy to Vibrio anguillarum and *** also found a novel micro RNA miR-2188-3p that could target TAK1 and inhibit the host antibacterial response and promote bacterial *** further found that the antibacterial effect inhibited by miR-2188-3p could be reversed with ***,*** and *** are the two most susceptible Gram-negative pathogens of aquaculture fish,and the economic losses caused by these two bacteria are immeasurable every *** study is the first to report on the ability of lnc RNA to prevent the escape of *** and *** in fish through the competing endogenous RNA(ceRNA)*** results not only elucidate the ce RNA mechanism of the lncRNA in antibacterial immune responses but also provide new insights into the impact of lnc RNA on host immunity and bacterial escape.

关键词： lncRNA microRNA ceRNA innate immunity antibacterial