Showing 21 - 40 results of 81 for search '"K–12"', query time: 0.07s Refine Results
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    Simple and Fail-safe Method to Transform Miniprep Escherichia coli Strain K12 Plasmid DNA Into Viable Agrobacterium tumefaciens EHA105 Cells for Plant Genetic Transformation by Beenzu Siamalube, Emmanuel Ehinmitan, Maina Ngotho, Justus Onguso, Steven Runo

    Published 2025-01-01
    “…This approach involves a streamlined plasmid miniprep procedure to isolate high-quality plasmid DNA from Escherichia coli K12 strain, followed by a target-specific transfer into A. tumefaciens EHA105 strain. …”
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    Increased distribution of carbon metabolic flux during de novo cytidine biosynthesis via attenuation of the acetic acid metabolism pathway in Escherichia coli by Tong Ye, Wei Ding, Zhengxu An, Haojie Zhang, Xiaobo Wei, Junnan Xu, Huiyan Liu, Haitian Fang

    Published 2025-02-01
    “…To mitigate carbon source loss, the CRISPR-Cas9 gene-editing technique was employed to knock out the poxB and pta genes in E. coli, generating the engineered strains K12ΔpoxB and K12ΔpoxBΔpta. After 39 h of fermentation in 500 mL shake flasks, the cytidine yields of strains K12ΔpoxB and K12ΔpoxBΔpta were 1.91 ± 0.04 g/L and 18.28 ± 0.22 g/L, respectively. …”
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  6. 26

    STUDY OF SYMBIOSIS FORMATION CONTROL IN PEA MUTANTS BY THE VEGETATIVE GRAFT METHOD by E. Yu. Vlasova, K. K. Sidorova, M. N. Glyanenko, T. M. Mishchenko

    Published 2014-12-01
    “…It is concluded that different mechanisms control supernodulation in supernodulating mutants K10a and K12a, on the one hand, and K301 and K22a, on the other hand.…”
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  7. 27

    Global Alignment of Pairwise Protein Interaction Networks for Maximal Common Conserved Patterns by Wenhong Tian, Nagiza F. Samatova

    Published 2013-01-01
    “…Applying this approach to S. cerevisiae (yeast) and D. melanogaster (fly), E. coli K12 and S. typhimurium, E. coli K12 and C. crescenttus, we analyze all clusters identified in the alignment. …”
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  8. 28

    Impact of Modern Technology on Social Research Methods in Educational Contexts by Horia Aljounid

    Published 2025-02-01
    “…Employing a quantitative research design, a survey was conducted with 200 educational researchers and educational employees in Yemen (K-12 education, higher education, educational policy) at Taiz city, Yemen, exploring their use of technologies such as social media analytics, big data tools, and digital surveys. …”
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  9. 29

    NHERI education and community outreach: longitudinal, educational outcomes of a coordinated, distributed network by Robin Nelson, Karina I. Vielma, Karina I. Vielma, JoAnn Browning

    Published 2025-01-01
    “…National Science Foundation (NSF) Natural Hazards Engineering Research Infrastructure (NHERI) Network Coordination Office (NCO) Education and Community Outreach (ECO) led coordinated efforts to promote educational activities along various pathways for students and educators targeted at broadening participation in and awareness of natural hazards engineering research through the Research Experiences for Undergraduates (REU) Summer Program, the Graduate Student Council (GSC), and the Summer Institute for Early Career Researchers and K-12 Educators. NHERI connects a diverse group of undergraduate and graduate students, faculty and K-12 educators, and researchers interested in mitigating the effects of natural hazards through these flagship educational programs. …”
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  10. 30

    Parameter Dependence of Positive Solutions for Second-Order Singular Neumann Boundary Value Problems with Impulsive Effects by Xuemei Zhang

    Published 2014-01-01
    “…The author considers the Neumann boundary value problem -y′′t+Myt=λωtft,yt,  t∈J,    t≠tk,  -Δy′|t=tk = λIktk,ytk,   k=1,2,…,m,  y′(0)=y′(1)=0 and establishes the dependence results of the solution on the parameter λ, which cover equations without impulsive effects and are compared with some recent results by Nieto and O’Regan.…”
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  11. 31

    Mean number of real zeros of a random hyperbolic polynomial by J. Ernest Wilkins

    Published 2000-01-01
    “…Consider the random hyperbolic polynomial, f(x)=1pa1coshx+⋯+np×ancoshnx, in which n and p are integers such that n≥2,   p≥0, and the coefficients ak(k=1,2,…,n) are independent, standard normally distributed random variables. …”
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  12. 32

    Global Universality of the Two-Layer Neural Network with the k-Rectified Linear Unit by Naoya Hatano, Masahiro Ikeda, Isao Ishikawa, Yoshihiro Sawano

    Published 2024-01-01
    “…This paper concerns the universality of the two-layer neural network with the k-rectified linear unit activation function with k=1,2,… with a suitable norm without any restriction on the shape of the domain in the real line. …”
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  13. 33

    Dynamical Behavior and Expressions of Solutions of a Class of Higher-Order Nonlinear Difference Equations by Ghada AlNemer, Lama Sh. Aljoufi, A. M. Ahmed, Samir Al Mohammady, M. Zakarya, H. M. Rezk

    Published 2024-01-01
    “…The aim of this article is to get the forms of the solutions of the following nonlinear higher-order difference equations χs+1=χs−3k+1/±1±Πl=1kχs−3l+1,s=0,1,2,…, where the initial conditions χ−j,j=0,1,2,…,3k−1 and k∈1,2,… are arbitrary real numbers. Also, we examine stability, boundedness, oscillation, and the periodic nature of these solutions.…”
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  14. 34

    Schur m-Power Convexity of a Class of Multiplicatively Convex Functions and Applications by Wen Wang, Shiguo Yang

    Published 2014-01-01
    “…We investigate the conditions under which the symmetric functions Fn,k(x,r)=∏1≤i1<i2<⋯<ik≤n ‍f(∑j=1k‍xijr)1/r,  k=1,2,…,n, are Schur m-power convex for x∈R++n and r>0. …”
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  15. 35

    Extracellular viral microRNAs as biomarkers of virus infection in human cells by Cheryl Chan, Joanne Xin Yi Loh, Wei-Xiang Sin, Denise Bei Lin Teo, Nicholas Kwan Zen Tan, Chandramouli Nagarajan, Yunxin Chen, Francesca Lorraine Wei Inng Lim, Michael E. Birnbaum, Rohan B.H. Williams, Stacy L. Springs

    Published 2025-03-01
    “…Viral exmiR profiling of spent media from EBV- and HHV-8-reactivated B cell models revealed specific signatures of elevated EBV miR-BHRF1-2-3p and HHV-8 miR-K12-10a-3p, miR-K12-10b, and miR-K12-12-3p, respectively, during virus reactivation. …”
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  16. 36

    Permanents of Hexagonal and Armchair Chains by O. Nekooei, H. Barzegar, A. R. Ashrafi

    Published 2022-01-01
    “…As a consequence of our work, it is proved that if Gk and Hk denote the hexagonal and armchair chains, respectively, then permAG1=4, permAGk=k+12, k≥2, and permAHk=4k with k≥1. One question about the permanent of a hexagonal zig-zag chain is also presented.…”
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  17. 37

    Meta-synthesis of school leadership competencies to support learner-centered, personalized education by Jayson W. Richardson, Sahar Khawaja

    Published 2025-02-01
    “…This study analyzes the corpus of research on how K–12 school leaders foster deeper learning by creating learner-centered, personalized learning opportunities for students. …”
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  18. 38

    Solutions of Second-Order m-Point Boundary Value Problems for Impulsive Dynamic Equations on Time Scales by Xue Xu, Yong Wang

    Published 2014-01-01
    “…We study a general second-order m-point boundary value problems for nonlinear singular impulsive dynamic equations on time scales uΔ∇(t)+a(t)uΔ(t)+b(t)u(t)+q(t)f(t,u(t))=0,t∈(0,1),t≠tk,uΔ(tk+)=uΔ(tk)-Ik(u(tk)), and k=1,2,…,n,u(ρ(0))=0,u(σ(1))=∑i=1m-2αiu(ηi)‍. The existence and uniqueness of positive solutions are established by using the mixed monotone fixed point theorem on cone and Krasnosel’skii fixed point theorem. …”
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  19. 39

    Inhabited Ideology: Diversity Ideology and Approaches to Racial Equity Across Institutional Sectors by Emily Handsman, Bonnie Siegler

    Published 2025-01-01
    “…The authors use two case studies to show that workers charged with addressing racial inequality in public and private K–12 schools interpret the demands of their work and develop racial equity programming in ways that align with sector-specific institutional myths. …”
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  20. 40

    Global attractivity of positive periodic solutions for an impulsive delay periodic food limited population model by Jian Song

    Published 2006-01-01
    “…We will consider the following nonlinear impulsive delay differential equation N′(t)=r(t)N(t)((K(t)−N(t−mw))/(K(t)+λ(t)N(t−mw))), a.e. t>0, t≠tk, N(tk+)=(1+bk)N(tk), K=1,2,…, where m is a positive integer, r(t), K(t), λ(t) are positive periodic functions of periodic ω. …”
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