keyword
MENU ▼
Read by QxMD icon Read
search

K-12

keyword
https://www.readbyqxmd.com/read/29214812/prevalence-and-implementation-practices-of-school-salad-bars-across-grade-levels
#1
Meg Bruening, Marc A Adams, Punam Ohri-Vachaspati, Jane Hurley
PURPOSE: To assess the prevalence of school salad bars in Arizona and to describe common practices of salad bar use among school nutrition managers across grade level. DESIGN: Cross-sectional web-based surveys. PARTICIPANTS: School nutrition managers from elementary, middle, high, and K-12 schools (N = 648). MEASURES: Prevalence of salad bars; implementation practices such as years with salad bar, salad bar type, location, monitor, and reimbursement practices; and food-related components of salad bars including frequency of items, popular items, and sources of food...
January 1, 2017: American Journal of Health Promotion: AJHP
https://www.readbyqxmd.com/read/29210309/identification-and-characterization-of-a-locus-putatively-involved-in-colanic-acid-biosynthesis-in-vibrio-alginolyticus-zj-51
#2
Xiaochun Huang, Chang Chen, Chunhua Ren, Yingying Li, Yiqin Deng, Yiying Yang, Xiongqi Ding
Colanic acid (CA) is a group I extracellular polysaccharide (EPS) that contributes to resistance against adverse environments in many members of the Enterobacteriaceae. In the present study, a genetic locus EPSC putatively involved in CA biosynthesis was identified in Vibrio alginolyticus ZJ-51, which undergoes colony morphology variation between translucent/smooth (ZJ-T) and opaque/rugose (ZJ-O). EPSC in ZJ-T carries 21 ORFs and resembles the CA cluster of Escherichia coli K-12. The deletion of EPSC led to decreased EPS and biofilm formation in both genetic backgrounds but no alternation of lipopolysaccharide...
December 6, 2017: Biofouling
https://www.readbyqxmd.com/read/29205229/crispr-cas-mediated-gene-silencing-reveals-racr-to-be-a-negative-regulator-of-ydas-and-ydat-toxins-in-escherichia-coli-k-12
#3
Gargi Bindal, Revathy Krishnamurthi, Aswin Sai Narain Seshasayee, Devashish Rath
Bacterial genomes are rich in horizontally acquired prophages. racR is an essential gene located in the rac prophage that is resident in many Escherichia coli genomes. Employing a clustered regularly interspaced short palindromic repeat (CRISPR)-Cas-based gene silencing approach, we show that RacR is a negative regulator of the divergently transcribed and adjacent ydaS-ydaT operon in Escherichia coli K-12. Overexpression of YdaS and YdaT due to RacR depletion leads to cell division defects and decrease in survival...
November 2017: MSphere
https://www.readbyqxmd.com/read/29205228/repression-of-ydas-toxin-is-mediated-by-transcriptional-repressor-racr-in-the-cryptic-rac-prophage-of-escherichia-coli-k-12
#4
Revathy Krishnamurthi, Swagatha Ghosh, Supriya Khedkar, Aswin Sai Narain Seshasayee
Horizontal gene transfer is a major driving force behind the genomic diversity seen in prokaryotes. The cryptic rac prophage in Escherichia coli K-12 carries the gene for a putative transcription factor RacR, whose deletion is lethal. We have shown that the essentiality of racR in E. coli K-12 is attributed to its role in transcriptionally repressing toxin gene(s) called ydaS and ydaT, which are adjacent to and coded divergently to racR. IMPORTANCE Transcription factors in the bacterium E. coli are rarely essential, and when they are essential, they are largely toxin-antitoxin systems...
November 2017: MSphere
https://www.readbyqxmd.com/read/29199446/advances-in-school-based-interventions-for-students-with-autism-spectrum-disorder-introduction-to-the-special-issue
#5
Cynthia M Anderson, Tristram Smith, Susan M Wilczynski
As the diagnosis of autism spectrum disorder has increased, so too has research on interventions to address core and associated features of autism. Although many methodologically rigorous studies on interventions have been reported, their relevance to educators is somewaht unclear. For example, only about 32% of evidence-based strategies identifed in these reviews were conducted in k-12 settings. Current literature also is limited in that, although many studies show that interventions can improve the communication and social interaction skills of individuals with autism, most of this work has been conducted with pre-school children; questions remain about the generality of these findings to school-aged children...
January 2018: Behavior Modification
https://www.readbyqxmd.com/read/29195013/effect-of-bacterial-growth-rate-on-bacteriophage-population-growth-rate
#6
Dominik Nabergoj, Petra Modic, Aleš Podgornik
It is important to understand how physiological state of the host influence propagation of bacteriophages (phages), due to the potential higher phage production needs in the future. In our study, we tried to elucidate the effect of bacterial growth rate on adsorption constant (δ), latent period (L), burst size (b), and bacteriophage population growth rate (λ). As a model system, a well-studied phage T4 and Escherichia coli K-12 as a host was used. Bacteria were grown in a continuous culture operating at dilution rates in the range between 0...
December 1, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/29192157/linking-functional-connectivity-and-dynamic-properties-of-resting-state-networks
#7
Won Hee Lee, Sophia Frangou
Spontaneous brain activity is organized into resting-state networks (RSNs) involved in internally-guided, higher-order mental functions (default mode, central executive and salience networks) and externally-driven, specialized sensory and motor processing (auditory, visual and sensorimotor networks). RSNs are characterized by their functional connectivity in terms of within-network cohesion and between-network integration, and by their dynamic properties in terms of synchrony and metastability. We examined the relationship between functional connectivity and dynamic network features using fMRI data and an anatomically constrained Kuramoto model...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29188187/genome-sequence-and-analysis-of-escherichia-coli-production-strain-ls5218
#8
Jacqueline M Rand, Gina C Gordon, Christopher R Mehrer, Brian F Pfleger
Escherichia coli strain LS5218 is a useful host for the production of fatty acid derived products, but the genetics underlying this utility have not been fully investigated. Here, we report the genome sequence of LS5218 and a list of large mutations and single nucleotide permutations (SNPs) relative to E. coli K-12 strain MG1655. We discuss how genetic differences may affect the physiological differences between LS5218 and MG1655. We find that LS5218 is more closely related to E. coli strain NCM3722 and suspect that small genetic differences between K-12 derived strains may have a significant impact on metabolic engineering efforts...
December 2017: Metabolic Engineering Communications
https://www.readbyqxmd.com/read/29146664/the-effects-of-practice-based-training-on-graduate-teaching-assistants-classroom-practices
#9
Erin A Becker, Erin J Easlon, Sarah C Potter, Alberto Guzman-Alvarez, Jensen M Spear, Marc T Facciotti, Michele M Igo, Mitchell Singer, Christopher Pagliarulo
Evidence-based teaching is a highly complex skill, requiring repeated cycles of deliberate practice and feedback to master. Despite existing well-characterized frameworks for practice-based training in K-12 teacher education, the major principles of these frameworks have not yet been transferred to instructor development in higher educational contexts, including training of graduate teaching assistants (GTAs). We sought to determine whether a practice-based training program could help GTAs learn and use evidence-based teaching methods in their classrooms...
2017: CBE Life Sciences Education
https://www.readbyqxmd.com/read/29145943/possible-economic-benefits-of-full-grade-acceleration
#10
Russell T Warne
Full-grade acceleration is an intervention in which students finish the K-12 curriculum at least one year early, usually due to early entrance to kindergarten, grade skipping, or early graduation from high school. Many studies have shown benefits during childhood for accelerated individuals, but few studies have examined outcomes of acceleration in adulthood. In this study data from five longitudinal datasets were combined to compare adult incomes of accelerated and non-accelerated subjects after controlling for five important childhood covariates...
December 2017: Journal of School Psychology
https://www.readbyqxmd.com/read/29145855/generation-of-a-platform-strain-for-ionic-liquid-tolerance-using-adaptive-laboratory-evolution
#11
Elsayed T Mohamed, Shizeng Wang, Rebecca M Lennen, Markus J Herrgård, Blake A Simmons, Steven W Singer, Adam M Feist
BACKGROUND: There is a need to replace petroleum-derived with sustainable feedstocks for chemical production. Certain biomass feedstocks can meet this need as abundant, diverse, and renewable resources. Specific ionic liquids (ILs) can play a role in this process as promising candidates for chemical pretreatment and deconstruction of plant-based biomass feedstocks as they efficiently release carbohydrates which can be fermented. However, the most efficient pretreatment ILs are highly toxic to biological systems, such as microbial fermentations, and hinder subsequent bioprocessing of fermentative sugars obtained from IL-treated biomass...
November 16, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/29143567/couple-relationship-quality-and-offspring-attachment-security-a-systematic-review-with-meta-analysis
#12
Evelyn S Tan, Jennifer E McIntosh, Emily J Kothe, Jessica E Opie, Craig A Olsson
This paper provides a meta-analytic examination of strength and direction of association between parents' couple relationship quality and early childhood attachment security (5 years and under). A comprehensive search of four EBSCOhost databases, Informit, Web of Science, and grey literature yielded 24 studies meeting eligibility criteria. Heterogeneity of the couple quality construct and measurement was marked. To disaggregate potentially differentially acting factors, we grouped homogeneous studies, creating two predictor variables defined as "positive dyadic adjustment" and "inter-parental conflict"...
November 16, 2017: Attachment & Human Development
https://www.readbyqxmd.com/read/29133551/copper-ions-and-coordination-complexes-as-novel-carbapenem-adjuvants
#13
Karrera Y Djoko, Maud E S Achard, Minh-Duy Phan, Alvin W Lo, Manfredi Miraula, Sasiprapa Prombhul, Steven J Hancock, Kate M Peters, Hanna Sidjabat, Patrick N Harris, Nataša Mitić, Timothy R Walsh, Gregory J Anderson, William M Shafer, David L Paterson, Gerhard Schenk, Alastair G McEwan, Mark A Schembri
Carbapenem-resistant Enterobacteriaceae are an urgent threat to global human health. These organisms produce β-lactamases with carbapenemase activity, such as the metallo-β-lactamase NDM-1, which is notable due to its association with mobile genetic elements and the lack of a clinically useful inhibitor. Here we examined the ability of copper to inhibit the activity of NDM-1 and explored the potential of a copper coordination complex as a mechanism to efficiently deliver copper as an adjuvant in clinical therapeutics...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29126297/tellurate-enters-escherichia-coli-k-12-cells-via-the-sult-type-sulfate-transporter-cyspuwa
#14
Jennifer Goff, Nathan Yee
Soluble forms of tellurium are environmental contaminants that are toxic to microorganisms. While tellurite [Te(IV)] is a well-characterized antimicrobial agent, little is known about the interactions of tellurate [Te(VI)] with bacterial cells. In this study, we investigated the role of sulfate transporters in the uptake of tellurate in Escherichia coli K-12. Mutant strains carrying a deletion of the cysW gene in the CysPUWA sulfate transporter system accumulated less cellular tellurium and exhibited higher resistance to tellurate compared to the wild type strain...
November 6, 2017: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29125021/organizational-policies-and-programs-to-reduce-job-stress-and-risk-of-workplace-violence-among-k-12-education-staff
#15
Paul Landsbergis, Jeanette Zoeckler, Zerin Kashem, Bianca Rivera, Darryl Alexander, Amy Bahruth
We examine strategies, programs, and policies that educators have developed to reduce work stressors and thus health risks. First, we review twenty-seven empirical studies and review papers on organizational programs and policies in K-12 education published from 1990 to 2015 and find some evidence that mentoring, induction, and Peer Assistance and Review programs can increase support, skill development, decision-making authority, and perhaps job security, for teachers-and thus have the potential to reduce job stressors...
January 1, 2017: New Solutions: a Journal of Environmental and Occupational Health Policy: NS
https://www.readbyqxmd.com/read/29104119/community-based-healthy-living-medicine-with-a-focus-on-k-12-physical-education-and-nutrition
#16
REVIEW
Sally S Wong
Childhood obesity is one of the country's most significant health problems. Researchers estimate that 32.2% of children and adolescents ages 2 to 19 in the United States are overweight and obese. The prevalence of childhood obesity in 2011-2014 was 17.0% and extreme obesity was 5.8% among US children and adolescents aged 2 to 19 years. The high rates of obesity and diabetes, poor nutrition, and lack of physical activity in children and adolescents makes cardiovascular risk reduction in this population critical...
November 2, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29064778/studies-of-physical-education-in-the-united-states-using-sofit-a-review
#17
Thomas L McKenzie, Nicole J Smith
PURPOSE: An objective database for physical education (PE) is important for policy and practice decisions, and the System for Observing Fitness Instruction Time (SOFIT) has been identified as an appropriate surveillance tool for PE across the nation. The purpose of this review was to assess peer-reviewed studies using SOFIT to study K-12 PE in U.S. schools. METHOD: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses informed the review, and 10 databases were searched for English-language articles published through 2016...
October 24, 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/29043932/information-needs-assessment-for-k-12-school-nurses-in-rural-eastern-washington-state
#18
Kathryn Vela
School nurses are an often-overlooked population of health care professionals who have great importance in rural communities where access to health care is limited. In order to better serve school nurses in rural eastern Washington, an assessment was conducted to determine their information needs, behaviors, and perceptions. Results indicated this population of school nurses searches for multiple types of health information on a daily basis and navigates obstacles to information access using a variety of resources...
October 2017: Medical Reference Services Quarterly
https://www.readbyqxmd.com/read/29040409/towards-dynamic-genome-scale-models
#19
David Gilbert, Monika Heiner, Yasoda Jayaweera, Christian Rohr
The analysis of the dynamic behaviour of genome-scale models of metabolism (GEMs) currently presents considerable challenges because of the difficulties of simulating such large and complex networks. Bacterial GEMs can comprise about 5000 reactions and metabolites, and encode a huge variety of growth conditions; such models cannot be used without sophisticated tool support. This article is intended to aid modellers, both specialist and non-specialist in computerized methods, to identify and apply a suitable combination of tools for the dynamic behaviour analysis of large-scale metabolic designs...
October 13, 2017: Briefings in Bioinformatics
https://www.readbyqxmd.com/read/29038545/adjacent-possible-ecological-niche-growth-of-lactobacillus-species-co-cultured-with-escherichia-coli-in-a-synthetic-minimal-medium
#20
Kouhei Mizuno, Mamiko Mizuno, Mio Yamauchi, Aya J Takemura, Veronica Medrano Romero, Kazuya Morikawa
In certain conditions, members of the Lactobacillus genus are auxotrophs that have fastidious requirements for growth. Notably, Lactobacillus cannot grow in M9 medium, a minimal synthetic medium used for Escherichia coli. However, we found that some Lactobacillus strains can be grown in M9 when co-cultured with E. coli K-12. In the co-culture, L. casei proliferates exponentially, reaching cell densities of 10(8) CFU (colony-forming unit) ml(-1) in 6 h and dominating E. coli in the late growth phase. Spent medium from E...
October 16, 2017: Scientific Reports
keyword
keyword
58581
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"