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18:49 EST 12th December 2018 | BioPortfolio

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Showing "Back school season been profitable Amazon" PubMed Articles 1–25 of 3,600+

The Risk Factors of Low Back Pain in Female High-School Students.

A prospective cross-sectional study OBJECTIVE.: To evaluate the prevalence and associated factors with low back pain (LBP) in female adolescents of high school age.

Microstructural alterations of cortical and deep gray matter over a season of high school football revealed by diffusion kurtosis imaging.

To probe microstructural changes that are associated with subconcussive head impact exposure in deep and cortical gray matter of high school football players over a single season.

Methylmercury in environmental compartments of a hydroelectric reservoir in the Western Amazon, Brazil.

Damming rivers to generate electricity creates a lentic environment that favors methylmercury (MeHg) formation. Reservoirs in the Amazon are critical environments for MeHg formation, considering its old soils and the use of Hg in gold mining in the region. The objective of this study was to evaluate MeHg accumulation in three environmental compartments (aquatic macrophytes, suspended particulate matter (SPM) and sediment) of the Samuel reservoir (Western Amazon, Brazil), during the low water, ebb and high w...

Biomass burning and carbon monoxide patterns in Brazil during the extreme drought years of 2005, 2010, and 2015.

In the 21st century, severe droughts associated with climate change will increase biomass burning (BB) in Brazil caused by the human activities. Recent droughts, especially in 2005, 2010, and 2015, caused strong socioeconomic and environmental impacts. The 2015 drought considered the most severe since 1901, surpassed the 2005 and 2010 events in respect to area and duration. Herein, based on satellite data, the 2005, 2010 and 2015 drought impacts on wildfire episodes and carbon monoxide (CO) variability duri...

Causes of reduced leaf-level photosynthesis during strong El Niño drought in a Central Amazon forest.

Sustained drought and concomitant high temperature may reduce photosynthesis and cause tree mortality. Possible causes of reduced photosynthesis include stomatal closure and biochemical inhibition, but their relative roles are unknown in Amazon trees during strong drought events. We assessed the effects of the recent (2015) strong El Niño drought on leaf-level photosynthesis of Central Amazon trees via these two mechanisms. Through four seasons of 2015, we measured leaf gas exchange, chlorophyll a fluoresc...

Longitudinal associations between weather, season, and mode of commuting to school amongst Spanish youths.

To study the associations of weather conditions with the travel mode choice for commuting to and from school.

Role of the floodplain lakes in the methylmercury distribution and exchanges with the Amazon River, Brazil.

Seasonal variability of dissolved and particulate methylmercury (F-MeHg, P-MeHg) concentrations was studied in the waters of the Amazon River and its associated Curuai floodplain during hydrological year 2005-2006, to understand the MeHg exchanges between these aquatic systems. In the oxic white water lakes, with neutral pH, high F-MeHg and P-MeHg concentrations were measured during the rising water stage (0.70±0.37pmol/L, n=26) and flood peak (14.19±9.32pmol/g, n=7) respectively, when the Amazon River wa...

Differences in school climate and student engagement in China and the United States.

The purpose of this study was to examine differences between American and Chinese students in their perceptions of school climate and engagement in school, and in the relation between school climate and engagement.

School attitude and perceived teacher acceptance: Developmental trajectories, temporal relations, and gender differences.

Positive school attitudes defined as students' school liking and school attachment are positively related to many desirable outcomes. Student-teacher relations have often been considered to be an important determinant of school attitudes.

Atypical Flowers Can Be as Profitable as Typical Hummingbird Flowers.

In western North America, hummingbirds can be observed systematically visiting flowers that lack the typical reddish color, tubular morphology, and dilute nectar of "hummingbird flowers." Curious about this behavior, we asked whether these atypical flowers are energetically profitable for hummingbirds. Our field measurements of nectar content and hummingbird foraging speeds, taken over four decades at multiple localities, show that atypical flowers can be as profitable as typical ones and suggest that the p...

Assessment of water quality of rivers that serve as water sources for drinking and domestic functions in rural and pre-urban communities in Edo North, Nigeria.

Surface waters are important to humans because they are a significant water supply source. They are, however, under serious environmental stress and are being threatened as a consequence of developmental activities. The present study describes the physicochemical properties and water quality indices of five different rivers used for drinking and other domestic activities in rural and pre-urban communities in Edo North, Nigeria. The physicochemical variable ranges include pH [wet season (6.47 ± 0.30-6.8...

Pharmacokinetics of fentanyl after intravenous administration in isoflurane-anesthetized red-tailed hawks (Buteo jamaicensis) and Hispaniolan Amazon parrots (Amazona ventralis).

OBJECTIVE To compare the disposition of fentanyl citrate after a single IV injection in isoflurane-anesthetized red-tailed hawks (Buteo jamaicensis) and Hispaniolan Amazon parrots (Amazona ventralis). ANIMALS 6 adult red-tailed hawks and 6 adult Hispaniolan Amazon parrots. PROCEDURES Anesthesia was induced and maintained with isoflurane; intermittent positive-pressure ventilation was provided. The minimum alveolar concentration of isoflurane was determined for each bird by use of the bracketing method and a...

Negative beliefs about back pain are associated with persistent, high levels of low back disability in community-based women.

Although pessimistic beliefs about back pain are associated with low back pain and disability, our understanding of their role in the natural history of the condition is limited. This study examined the association between beliefs about back pain and the development and progression of low back pain and disability over a 2-year period in community-dwelling women.

Early school failure predicts teenage pregnancy and marriage: A large population-based cohort study in northern Malawi.

School dropout has been linked to early pregnancy and marriage but less is known about the effect of school performance. We aimed to assess whether school performance influenced age at sexual debut, pregnancy and marriage, and from what age school drop-out and performance were associated with these later life events.

Constructing a logical model in school health: experience on the Lower Amazon region.

This experience report presents the construction of the theoretical and logic model for intervention to promote physical activity and healthy eating habits of the public schools students in the city of Parintins, Amazonas, Brazil.

Development and Validation of the School Refusal Evaluation Scale for Adolescents.

School refusal (SR) is considered as a clinical form of emotionally based school absenteeism related to the experience of strong negative emotions when attending school. However, there are no psychometrically sound measures specifically designed to assess SR. The aim of the present research was to develop and validate a multidimensional self-report measure of SR: the SChool REfusal EvaluatioN Scale (SCREEN) for adolescents.

The Effects of Satisfaction of Basic Psychological Needs at School on Children's Prosocial Behavior and Antisocial Behavior: The Mediating Role of School Satisfaction.

Grounded in Basic Psychological Need Theory, we examined the direct effects of the satisfaction of three basic psychological needs at school (i.e., satisfaction of autonomy needs at school, satisfaction of relatedness needs at school, and satisfaction of competence needs at school) on prosocial behavior and antisocial behavior as well as the mediation effects of school satisfaction on the relations between the satisfaction of three basic psychological needs at school and prosocial behavior as well as antiso...

Variation in Nutritional Quality of School Lunches With Implementation of National School Lunch Program Guidelines.

School lunches must meet National School Lunch Program (NSLP) requirements to receive reimbursement. In this study, we sought to determine whether there are significant differences in nutrient content and nutritional quality between 2 menus meeting NSLP requirements.

Low gestational age at birth and difficulties in school-A matter of 'dose'.

Several studies suggest a relationship between gestational age at birth and risk of school difficulties. Our study aimed to investigate the association between the entire range of gestational ages and significant school difficulties measured as 1) More than nine hours per week special educational support and 2) Failing to complete compulsory school.

Using CDOM optical properties for estimating DOC concentrations and pCO in the Lower Amazon River.

Coloured dissolved organic matter (CDOM) is one of the major contributors to the absorption budget of most freshwaters and can be used as a proxy to assess non-optical carbon fractions such as dissolved organic carbon (DOC) and the partial pressure of carbon dioxide (pCO). Nevertheless, riverine studies that explore the former relationships are still relatively scarce, especially within tropical regions. Here we document the spatial-seasonal variability of CDOM, DOC and pCO, and assess the potential of CDOM...

School climate and physical adolescent relationship abuse: Differences by sex, socioeconomic status, and bullying.

Little is known about the association between school climate and adolescent relationship abuse (ARA). We used 2011-2012 data from surveys of California public school students (in the United States of America) who were in a dating relationship in the last year (n = 112 378) to quantify the association between different school climate constructs and physical ARA. Fifty-two percent of students were female, and all students were in 9th or 11th grade (approximately ages 14-17). Over 11% of students reporte...

Does oral health influence school performance and school attendance? A systematic review and meta-analysis.

To examine the evidence on the influence of oral health status on school performance and school attendance in children and adolescents.

The association of adolescent spinal-pain-related absenteeism with early adulthood work absenteeism: A six-year follow-up data from a population-based cohort.

Objectives Spinal (ie, back and neck) pain often develops as early as during adolescence and can set a trajectory for later life. However, whether early-life spinal-pain-related behavioral responses of missing school/work are predictive of future work absenteeism is yet unknown. We assessed the association of adolescent spinal-pain-related work or school absenteeism with early adulthood work absenteeism in a prospective population-based cohort. Methods Six year follow-up data from the Western Australian Pre...

Health problems during childhood and school achievement: Exploring associations between hospitalization exposures, gender, timing, and compulsory school grades.

To investigate while accounting for health at birth 1) associations between health problems during childhood, measured as hospitalizations, and school achievement in the final year of compulsory school, measured as overall grade points and eligibility for upper secondary education, 2) if and how gender moderates the association between health problems and school achievement, 3) if and how the timing of a health problem during childhood is associated with later school achievement.

Relationships and Reliability Between a Drive Block Test and Traditional Football Performance Tests in High School Offensive Line Players.

Collins, KS, Coburn, JW, Galpin, AJ, and Lockie, RG. Relationships and reliability between a drive block test and traditional football performance tests in high school offensive line players. J Strength Cond Res XX(X): 000-000, 2018-The offensive line (OL) is a specialized football position responsible for blocking tasks. Little research exists on OL-specific movements and relationships to performance tests in high school players. This study investigated the reliability of the average and peak velocity (avg...

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