نتایج جستجو برای: f factor

تعداد نتایج: 1112465  

Journal: :Journal of bacteriology 1978
S C Causey L R Brown

We used the sequence-specific endonucleases EcoRI, SmaI, BamHI, HsuI, and HaeIII as identification tools in following the conjugal transfer of the well-studied R plasmids Sa, R388, RP4, and R6K. Transfers were both intergeneric and intrageneric. Plasmid fingerprints were generated from both single- and combination-enzyme digests. The Sa transconjugants yielded plasmids showing consistent finger...

Journal: :Applied developmental science 2013
Adriene M Beltz Charles Beekman Peter C M Molenaar Kristin A Buss

Developmental science is rich with observations of social interactions, but few available methodological and statistical approaches take full advantage of the information provided by these data. The authors propose implementation of the unified structural equation model (uSEM), a network analysis technique, for observational data coded repeatedly across time; uSEM captures the temporal dynamics...

2012
Béatrice Nikiema Slim Haddad Louise Potvin

BACKGROUND In sub-Saharan Africa, women must overcome numerous barriers when they need modern healthcare. Respect of gender norms within the household and the community may still influence women's ability to obtain care. A lack of gender-sensitive instruments for measuring women's ability to overcome barriers compromises attempts to adequately quantify the burden and risk of exclusion they face...

Journal: :Journal of biomechanics 2015
Marcelo P Castro Todd C Pataky Gisela Sole Joao Paulo Vilas-Boas

Ground reaction force (GRF) data from men and women are commonly pooled for analyses. However, it may not be justifiable to pool sexes on the basis of discrete parameters extracted from continuous GRF gait waveforms because this can miss continuous effects. Forty healthy participants (20 men and 20 women) walked at a cadence of 100 steps per minute across two force plates, recording GRFs. Two s...

2015
Sundeep Pandey

The aim of present study was to compare attitude of parents and teachers belonging to SC/ST group towards sex education included in school curriculum. The sample consisted of 40 teachers (teachers belonging to ST/SC group of different government schools and private schools of Almora and Nainital Districts) and 46 parents (mother and father from same family of students belonging to ST/SC group s...

2016
Johany Peñailillo Gabriela Olivares Ximena Moncada Claudia Payacán Chi-Shan Chang Kuo-Fang Chung Peter J. Matthews Andrea Seelenfreund Daniela Seelenfreund

[This corrects the article DOI: 10.1371/journal.pone.0161148.].

2018
Mengni Chen Chris J Lloyd Paul S F Yip

A country's total fertility rate (TFR) depends on many factors. Attributing changes in TFR to changes of policy is difficult, as they could easily be correlated with changes in the unmeasured drivers of TFR. A case in point is Australia where both pronatalist effort and TFR increased in lock step from 2001 to 2008 and then decreased. The global financial crisis or other unobserved confounders m...

Journal: :Integrative and comparative biology 2014
Rachel M Bowden Amanda W Carter Ryan T Paitz

Variable environmental conditions can alter the phenotype of offspring, particularly in ectothermic species such as reptiles. Despite this, the majority of studies on development in reptiles have been carried out under constant conditions in the laboratory, raising the question of just how applicable those investigations are to natural conditions? Here, we first review what we have learned from...

Journal: :Journal of evolutionary biology 2010
Steven A Frank

An individually costly act that benefits all group members is a public good. Natural selection favours individual contribution to public good [corrected] only when some benefit to the individual offsets the cost of contribution. Problems of sex ratio, parasite virulence, microbial metabolism, punishment of noncooperators, and nearly all aspects of sociality have been analysed as public goods sh...

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