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PRiME HLB前处理技术联合超高效液相色谱-三重四极杆质谱系统检测水产品中17种磺胺类药物残留 被引量:2
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作者 余海芬 徐桦 +5 位作者 吴真善 包蔚 朱晓芸 何锴 黄忠 战涛 《现代食品》 2024年第1期213-215,224,共4页
使用通过型固相萃取小柱PRi ME HLB处理水产品样品,建立了一种水产品中17种磺胺类药物的简单、快速的筛选分析方法。水产品样品经80%乙腈水溶液(含0.2%甲酸)提取,过PRi ME HLB固相萃取柱净化,浓缩后经C_(18)色谱柱梯度洗脱分离,超高效... 使用通过型固相萃取小柱PRi ME HLB处理水产品样品,建立了一种水产品中17种磺胺类药物的简单、快速的筛选分析方法。水产品样品经80%乙腈水溶液(含0.2%甲酸)提取,过PRi ME HLB固相萃取柱净化,浓缩后经C_(18)色谱柱梯度洗脱分离,超高效液相色谱-三重四极杆质谱系统进行定量分析。结果表明,17种磺胺类药物在1.0~50.0 ng·mL^(-1)线性关系良好,相关系数R^(2)>0.99;该方法检出限为2μg·kg^(-1);添加浓度为10μg·kg^(-1)时方法回收率在71.3%~118.4%,RSD值均小于20%。 展开更多
关键词 磺胺 水产品 prime HLB固相萃取小柱
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A Note on the Commutativity of Prime Near-rings 被引量:1
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作者 Yilun Shang 《Algebra Colloquium》 SCIE CSCD 2015年第3期361-366,共6页
Let N be a prime near-ring. We show two main results on the commutativity of N: (1) If there exist k, l ∈ N such that N admits a generalized derivation D satisfying either D([x,y]) = xk[x,y]xl for all x,y ∈ N o... Let N be a prime near-ring. We show two main results on the commutativity of N: (1) If there exist k, l ∈ N such that N admits a generalized derivation D satisfying either D([x,y]) = xk[x,y]xl for all x,y ∈ N or D([x,y]) = -xk[x,y]xI for all x,y ∈ N, then N is a commutative ring. (2) If there exist k, l ∈ N such that N admits a generalized derivation D satisfying either D(x o y) = xk(x o y)xl for all x, y ∈ N or D(x o y) = -xk(x o y)xl for all x, y ∈ N, then N is a commutative ring. Moreover, some interesting relations between the prime graph and zero-divisor graph of N are studied. 展开更多
关键词 near-ring DERIVATION prime graph
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An Introduction to the Theory of Matrix Near-Rings
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作者 Saviour Chibeti Iness Kyapwanyama 《Advances in Pure Mathematics》 2023年第2期71-95,共25页
Matrix rings are prominent in abstract algebra. In this paper we give an overview of the theory of matrix near-rings. A near-ring differs from a ring in that it does not need to be abelian and one of the distributive ... Matrix rings are prominent in abstract algebra. In this paper we give an overview of the theory of matrix near-rings. A near-ring differs from a ring in that it does not need to be abelian and one of the distributive laws does not hold in general. We introduce two ways in which matrix near-rings can be defined and discuss the structure of each. One is as given by Beildeman and the other is as defined by Meldrum. Beildeman defined his matrix near-rings as normal arrays under the operation of matrix multiplication and addition. He showed that we have a matrix near-ring over a near-ring if, and only if, it is a ring. In this case it is not possible to obtain a matrix near-ring from a proper near-ring. Later, in 1986, Meldrum and van der Walt defined matrix near-rings over a near-ring as mappings from the direct sum of n copies of the additive group of the near-ring to itself. In this case it can be shown that a proper near-ring is obtained. We prove several properties, introduce some special matrices and show that a matrix notation can be introduced to make calculations easier, provided that n is small. 展开更多
关键词 near-ringS First near-ring Isomorphism Zero Symmetric near-ring near-ring Module and Matrix near-rings
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Origin of Sexy Prime Numbers, Origin of Cousin Prime Numbers, Equations from Supposedly Prime Numbers, Origin of the Mersenne Number, Origin of the Fermat Number
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作者 Mady Ndiaye 《Advances in Pure Mathematics》 2024年第5期321-332,共12页
We have found through calculations that the differences between the closest supposed prime numbers other than 2 and 3 defined in the articles are: 2;4: and 6. For those whose difference is equal to 6, we showed their ... We have found through calculations that the differences between the closest supposed prime numbers other than 2 and 3 defined in the articles are: 2;4: and 6. For those whose difference is equal to 6, we showed their origin then we classified them into two categories according to their classes, we showed in which context two prime numbers which differ from 6 are called sexy and in what context they are said real sexy prime. For those whose difference is equal to 4, we showed their origin then we showed that two prime numbers which differ from 4, that is to say two cousin prime numbers, are successive. We made an observation on the supposed prime numbers then we established two pairs of equations from this observation and deduced the origin of the Mersenne number and that of the Fermat number. 展开更多
关键词 Cousin prime Numbers Sexy prime Numbers Real Sexy prime Numbers Equations from Supposed prime Numbers Mersenne Number Fermat Number Supposed prime Numbers prime Numbers
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How Prime Numbers Are Interconnected and Built with Two Equations: Addition and Subtraction Rules the Function (6µ)
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作者 John Richard Wisdom 《Advances in Pure Mathematics》 2024年第4期228-241,共14页
Are all prime numbers linked by four simple functions? Can we predict when a prime will appear in a sequence of primes? If we classify primes into two groups, Group 1 for all primes that appear before ζ (such that , ... Are all prime numbers linked by four simple functions? Can we predict when a prime will appear in a sequence of primes? If we classify primes into two groups, Group 1 for all primes that appear before ζ (such that , for instance 5, ), an even number divisible by 3 and 2, and Group 2 for all primes that are after ζ (such that , for instance 7), then we find a simple function: for each prime in each group, , where n is any natural number. If we start a sequence of primes with 5 for Group 1 and 7 for Group 2, we can attribute a μ value for each prime. The μ value can be attributed to every prime greater than 7. Thus for Group 1, and . Using this formula, all the primes appear for , where μ is any natural number. 展开更多
关键词 Number Theory prime Number Groups Twin primes prime Structure and Sequence prime Subtraction and Addition
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Preliminary Identification of a Prime Number Other Than 2 and 3, the Origin of Twin Prime Numbers, the Structure of the Chain of Prime Numbers and the Set of Prime Numbers Less Than a Given Integer
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作者 Mady Ndiaye 《Advances in Pure Mathematics》 2024年第1期30-48,共19页
The application of the Euclidean division theorem for the positive integers allowed us to establish a set which contains all the prime numbers and this set we called it set of supposedly prime numbers and we noted it ... The application of the Euclidean division theorem for the positive integers allowed us to establish a set which contains all the prime numbers and this set we called it set of supposedly prime numbers and we noted it E<sub>sp</sub>. We subsequently established from the previous set the set of non-prime numbers (the set of numbers belonging to this set and which are not prime) denoted E<sub>np</sub>. We then extracted from the set of supposedly prime numbers the numbers which are not prime and the set of remaining number constitutes the set of prime numbers denoted E<sub>p</sub>. We have deduced from the previous set, the set of prime numbers between two natural numbers. We have explained during our demonstrations the origin of the twin prime numbers and the structure of the chain of prime numbers. 展开更多
关键词 Supposedly prime Numbers Non-prime Numbers prime Numbers prime Numbers Less Than a Given Integer prime Numbers between Two Given Integers
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The Periodic Table of Primes
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作者 Han-Lin Li Shu-Cherng Fang Way Kuo 《Advances in Pure Mathematics》 2024年第5期394-419,共26页
Over millennia, nobody has been able to predict where prime numbers sprout or how they spread. This study establishes the Periodic Table of Primes (PTP) using four prime numbers 2, 3, 5, and 7. We identify 48 integers... Over millennia, nobody has been able to predict where prime numbers sprout or how they spread. This study establishes the Periodic Table of Primes (PTP) using four prime numbers 2, 3, 5, and 7. We identify 48 integers out of a period 2×3×5×7=210 to be the roots of all primes as well as composites without factors of 2, 3, 5, and 7. Each prime, twin primes, or composite without factors of 2, 3, 5, and 7 is an offspring of the 48 integers uniquely allocated on the PTP. Three major establishments made in the article are the Formula of Primes, the Periodic Table of Primes, and the Counting Functions of Primes and Twin Primes. 展开更多
关键词 primeS COMPOSITES the Periodic Table of primes
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On the Number of Primes in the Interval (x, 2x) by an Elementary Method
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作者 Sudhindra B. Kittur 《Advances in Pure Mathematics》 2024年第1期16-29,共14页
An elementary formula to know the number of primes in the interval (x, 2x) close to the exact figure for a fixed x is given here. A new elementary equation is derived (a relation between prime numbers and composite nu... An elementary formula to know the number of primes in the interval (x, 2x) close to the exact figure for a fixed x is given here. A new elementary equation is derived (a relation between prime numbers and composite numbers distributed in the interval [1, 2x]). An elementary method to know the number of primes in a given magnitude is suitably placed in the form of a general formula, and we have proved it. The general formula is applied to the terms of the equation, and a tactical simplification of the terms gives rise to an expression whose verification envisages scope for its further studies. 展开更多
关键词 prime Numbers Composite Numbers EXPRESSION INTEGERS
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On Perron’s Formula and the Prime Numbers
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作者 Michael M. Anthony 《Advances in Pure Mathematics》 2024年第6期487-494,共8页
The Riemann hypothesis is intimately connected to the counting functions for the primes. In particular, Perron’s explicit formula relates the prime counting function to fixed points of iterations of the explicit form... The Riemann hypothesis is intimately connected to the counting functions for the primes. In particular, Perron’s explicit formula relates the prime counting function to fixed points of iterations of the explicit formula with particular relations involving the trivial and non-trivial roots of the Riemann Zeta function and the Primes. The aim of the paper is to demonstrate this relation at the fixed points of iterations of explicit formula, defined by functions of the form limT∈Ν→∞fT(zw)=zw,where, zwis a real number. 展开更多
关键词 Perron Fixed Points ITERATIONS Number Theory Riemann Hypothesis ITERATIONS INVARIANCE primeS
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PRiME HLB固相萃取结合UPLC-QTOF-MS测定烟液与烟丝中的依托咪酯
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作者 王华 罗达龙 +5 位作者 覃蓝 莫惠欣 李媛捷 何姗珊 杨梓莹 刘虹虹 《分析仪器》 CAS 2024年第5期25-30,共6页
待测样品经乙腈提取后,使用PRi ME HLB固相萃取柱对样品提取液进行净化,经ACE EXCEL C18(2.1mm×50mm,2μm)色谱柱分离,以甲醇-5mmol·L^(-1)甲酸铵水溶液(含0.1%甲酸)作为流动相,梯度洗脱,采用电喷雾离子源正模式(ESI+),目标... 待测样品经乙腈提取后,使用PRi ME HLB固相萃取柱对样品提取液进行净化,经ACE EXCEL C18(2.1mm×50mm,2μm)色谱柱分离,以甲醇-5mmol·L^(-1)甲酸铵水溶液(含0.1%甲酸)作为流动相,梯度洗脱,采用电喷雾离子源正模式(ESI+),目标物二级离子模式(Targeted MS/MS)进行质谱分析。依托咪酯在2ng·m L^(-1)~200ng·m L^(-1)浓度范围内线性关系良好,相关系数r为0.999,在0.2μg·g^(-1),1.0μg·g^(-1),5.0μg·g^(-1)3个水平的加标回收率为86.6%~94.6%,RSD为3.1%~4.3%(n=9)。本方法具有操作简易快速、定性定量准确等特点。 展开更多
关键词 依托咪酯 四极杆飞行时间质谱 电子烟 prime HLB固相萃取
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PRiME HLB固相萃取-超高效液相色谱-串联质谱法测定水产品中的孔雀石绿含量
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作者 欧柏尧 宋海霞 +1 位作者 梁莹 赵天珍 《安徽化工》 CAS 2024年第4期146-149,共4页
目的:建立了水产品中显色孔雀石绿(MG)及隐色孔雀石绿(LMG)残留量的超高效液相色谱-串联质谱测定方法。方法:样品用1.5%甲酸乙腈提取,离心,提取液经过PRiME HLB通过式固相萃取柱净化,氮吹后复溶,UPLC-MS/MS测定,同位素内标法定量。结果... 目的:建立了水产品中显色孔雀石绿(MG)及隐色孔雀石绿(LMG)残留量的超高效液相色谱-串联质谱测定方法。方法:样品用1.5%甲酸乙腈提取,离心,提取液经过PRiME HLB通过式固相萃取柱净化,氮吹后复溶,UPLC-MS/MS测定,同位素内标法定量。结果:在浓度为0.5~10.0μg/L范围内线性关系均良好,相关系数均大于0.995,检测限为0.008~0.01μg/kg,定量限为0.02~0.04μg/kg,加标回收率为86.8%~110.5%,相对标准偏差为1.6%~5.8%。结论:该方法高效快捷、准确可靠,能够满足大批量水产品中孔雀石绿及隐色孔雀石绿的检测。 展开更多
关键词 孔雀石绿 水产品 prime HLB 超高效液相色谱-串联质谱
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Distribution and Relation of Primes with Tesla Numbers 3, 6, and 9
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作者 Javier Mendoza-Navarrete Huetzin Perez +4 位作者 Ismael Ojeda Victor Verdugo Gabriel Luna Sandoval Ricardo Jimenez Garcia Jaime Alvarez 《Journal of Applied Mathematics and Physics》 2024年第4期1021-1027,共7页
This work presents a different approach to twin primes, an approach from the perspective of the Tesla numbers and gives a refresh and new observation of twin primes that could lead us to an answer to the Twin Prime Co... This work presents a different approach to twin primes, an approach from the perspective of the Tesla numbers and gives a refresh and new observation of twin primes that could lead us to an answer to the Twin Prime Conjecture problem. We expose a peculiar relation between twin primes and the generation of prime numbers with Tesla numbers. Tesla numbers seem to be present in so many domains like time, vibration and frequency [1], and the space between twin primes is not the exception. Let us say that twin primes are more than just prime numbers plus 2 or minus 2, and Tesla numbers are more involved with twin primes than we think, and hopefully, this approach give us a better understanding of the distribution of the twin pairs. 展开更多
关键词 Tesla Numbers prime Number Twin prime Numbers Twin Pair
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Primetime Fashion Beijing hosts China Fashion Week A/W 2024
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作者 Liu Chuihang 《China Report ASEAN》 2024年第5期56-57,共2页
The China Fashion Week A/W 2024,hosted by the China Fashion Designers Association,took place in Beijing from March 23 to 31.Themed“Fu”(Empower),this season’s fashion week continued to focus on Chinese aesthetics,in... The China Fashion Week A/W 2024,hosted by the China Fashion Designers Association,took place in Beijing from March 23 to 31.Themed“Fu”(Empower),this season’s fashion week continued to focus on Chinese aesthetics,innovation in intangible cultural heritage,fusion of Chinese trends. 展开更多
关键词 continued prime HERITAGE
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Proof of Concept for a Twin Prime Number Universe Using Set Theory
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作者 John R. Crary 《American Journal of Computational Mathematics》 2024年第3期305-317,共13页
The Fine Structure Constant (eFSC) Model attempts to give a classical definition to a magical number that underlies much of quantum physics. The Fine Structure Constant (α) value equal to 137.03599206 represents a di... The Fine Structure Constant (eFSC) Model attempts to give a classical definition to a magical number that underlies much of quantum physics. The Fine Structure Constant (α) value equal to 137.03599206 represents a dimensionless constant that characterizes the strength of the electromagnetic (EM) interaction between subatomic charged particles. Python-generated property counts for the twin prime force F{139/137} show that the adjusted ratio gives a value of α = 137.036. This implies a mathematical framework underlying this constant is based on twin prime numbers and set theory. This study attempts to demonstrate a proof of concept that a hierarchy of fractional twin prime (αII) forces replicates the quantum nature of the universe and is aligned with the Standard Model of Particle Physics. An expanded eFSC Model demonstrates that twin prime forces and their property sets are mathematically viable substitutes for nuclear reactions, as demonstrated for the Beta-minus decay of neutrons into protons. Most significantly, the positive and negative prime numbers define these nuclear reactants and products as positive or negatively charged ions. Furthermore, the eFSC Model provides new insights regarding the hierarchy of EM forces underlying the quantum nature of the universe. 展开更多
关键词 Fine Structure Constant (α) prime Numbers Set Theory Conceptual Model Quantum Physics Light and Matter Beta-Minus Decay
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The Quantum Microverse: A Prime Number Framework for Understanding the Universe
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作者 John R. Crary 《American Journal of Computational Mathematics》 2024年第2期264-274,共11页
This study aims to demonstrate a proof of concept for a novel theory of the universe based on the Fine Structure Constant (α), derived from n-dimensional prime number property sets, specifically α = 137 and α = 139... This study aims to demonstrate a proof of concept for a novel theory of the universe based on the Fine Structure Constant (α), derived from n-dimensional prime number property sets, specifically α = 137 and α = 139. The FSC Model introduces a new perspective on the fundamental nature of our universe, showing that α = 137.036 can be calculated from these prime property sets. The Fine Structure Constant, a cornerstone in Quantum Electrodynamics (QED) and Quantum Chromodynamics (QCD), implies an underlying structure. This study identifies this mathematical framework and demonstrates how the FSC model theory aligns with our current understanding of physics and cosmology. The results unveil a hierarchy of α values for twin prime pairs U{3/2} through U{199/197}. These values, represented by their fraction parts α♊ (e.g., 0.036), define the relative electromagnetic forces driving quantum energy systems. The lower twin prime pairs, such as U{3/2}, exhibit higher EM forces that decrease as the twin pairs increase, turning dark when they drop below the α♊ for light. The results provide classical definitions for Baryonic Matter/Energy, Dark Matter, Dark Energy, and Antimatter but mostly illustrate how the combined α♊ values for three adjacent twin primes, U{7/5/3/2} mirrors the strong nuclear force of gluons holding quarks together. 展开更多
关键词 Fine Structure Constant Fractional Coupling Constants Matter/Antimatter Dark Matter/Energy Quantum Gravity prime Numbers Set Theory
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安德里茨将向中顺洁柔宿迁基地提供两台Prime LineCOMPACT M紧凑型卫生纸机
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作者 安德里茨 《生活用纸》 2024年第7期77-77,共1页
安德里茨将向中顺洁柔位于江苏省宿迁市宿城区运河宿迁港产业园的生活用纸生产基地提供两台Prime LineCOMPACT M紧凑型卫生纸机。这两台纸机的最大运行车速可达1,650m/min,幅宽3.5m,以原生商品浆为原料,最大产能为94t/d,用以生产生活用... 安德里茨将向中顺洁柔位于江苏省宿迁市宿城区运河宿迁港产业园的生活用纸生产基地提供两台Prime LineCOMPACT M紧凑型卫生纸机。这两台纸机的最大运行车速可达1,650m/min,幅宽3.5m,以原生商品浆为原料,最大产能为94t/d,用以生产生活用纸原纸。两台纸机均配备了安德里茨先进的Prime系列产品,包括Prime Flow流浆箱,Prime Dry钢制扬克缸和Prime Dry Canopy通风式气罩等,并采用大直径高负荷真空压榨辊,确保在生产高品质纸品同时通过高效干燥方式实现低能耗生产。 展开更多
关键词 生活用纸 卫生纸机 宿城区 prime 江苏省宿迁市 商品浆 流浆箱 产业园
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基于Vega Prime的无人直升机飞行模拟系统
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作者 史永胜 夏志超 《中国民航大学学报》 CAS 2023年第2期58-64,共7页
以某型无人直升机为仿真对象设计了一款飞行模拟系统,该系统由飞行仿真模块、座舱仿真模块、视景仿真模块和控制台模块4部分组成。飞行仿真模块对旋翼、尾桨、机身、平尾、垂尾等各部件进行动力学建模,并使用S函数编写了Simulink模块;... 以某型无人直升机为仿真对象设计了一款飞行模拟系统,该系统由飞行仿真模块、座舱仿真模块、视景仿真模块和控制台模块4部分组成。飞行仿真模块对旋翼、尾桨、机身、平尾、垂尾等各部件进行动力学建模,并使用S函数编写了Simulink模块;座舱仿真模块使用GL Studio软件设计了照片级的飞行仪表用于实时显示飞行数据;视景仿真模块是基于Vega Prime仿真平台二次开发的;采用基于MFC(microsoft foundation classes)的多线程方法搭建了基本的仿真框架并设计了控制台模块界面,可以用于和用户的实时交互。最后仿真验证了系统的可行性。 展开更多
关键词 无人直升机 飞行模拟系统 S函数 Vega prime 动力学建模 微软基础类库(MFC)多线程
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Redefined generalized fuzzy ideals of near-rings 被引量:1
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作者 ZHAN Jian-ming YIN Yun-qiang 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2010年第3期341-348,共8页
With a new idea, we redefine generalized fuzzy subnear-rings (ideals) of a near- ring and investigate some of its related properties. Some new characterizations are given. In particular, we introduce the concepts of... With a new idea, we redefine generalized fuzzy subnear-rings (ideals) of a near- ring and investigate some of its related properties. Some new characterizations are given. In particular, we introduce the concepts of strong prime (or semiprime) (∈, ∈∨ q)-fuzzy ideals of near-rings, and discuss the relationship between strong prime (or semiprime) (∈, ∈∨ q)-fuzzy ideals and prime (or semiprime) (∈, ∈∨ q)-fuzzy ideals of near-rings. 展开更多
关键词 near-ring subnear-ring (ideal) (∈^- ∈^-∨ q^-)-fuzzy subnear-ring (ideal) prime (semiprime (∈ ∈∨ q)-fuzzy subnear-ring (ideal).
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Generalized fuzzy ideals of near-rings 被引量:1
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作者 ZHAN Jian-ming Davvaz B. 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2009年第3期343-349,共7页
The concept of(∈,∈∨q)-fuzzy subnear-rings(ideals) of a near-ring is introduced and some of its related properties are investigated.In particular,the relationships among ordinary fuzzy subnear-rings(ideals),(... The concept of(∈,∈∨q)-fuzzy subnear-rings(ideals) of a near-ring is introduced and some of its related properties are investigated.In particular,the relationships among ordinary fuzzy subnear-rings(ideals),(∈,∈∨ q)-fuzzy subnear-rings(ideals) and(∈,∈∨q)-fuzzy subnear-rings(ideals) of near-rings are described.Finally,some characterization of [μ]t is given by means of(∈,∈∨ q)-fuzzy ideals. 展开更多
关键词 near-ring subnear-ring (ideal) (∈ q)-fuzzy subnear-ring (ideal) (∈ ∈∨ q)-fuzzy subnear-ring(ideal)
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Corresponding Prime Number Distribution Equation 被引量:1
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作者 Dan Liu Chenglong Liu 《Journal of Applied Mathematics and Physics》 2023年第11期3354-3365,共12页
The conjecture of twin prime numbers is a mathematical problem. Proving the twin prime conjecture using traditional modern number theory is extremely profound and complex. We propose an elementary research method for ... The conjecture of twin prime numbers is a mathematical problem. Proving the twin prime conjecture using traditional modern number theory is extremely profound and complex. We propose an elementary research method for corresponding prime number, proved that the conjecture of twin prime numbers and obtain the corresponding prime distribution equation. According to the distribution rate of corresponding prime numbers, the distribution pattern of twin prime numbers was proved the distribution rate theorem. This is the distribution rate of prime numbers corresponding to composite numbers, which approaches the distribution rate of prime numbers corresponding to integers. Based on the corresponding prime distribution equation, obtain the twin prime inequality function. Then, the formula for calculating twin prime numbers was discussed. There is also the Hardy Littlewood conjecture. This provides a practical and feasible approach for studying the distribution of twin prime numbers. 展开更多
关键词 prime Number Composite Number Twin prime Numbers Corresponding prime Distribution Equation Twin prime Inequality Function
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