We present a 14N nuclear magnetic resonance study of a single crystal of CuBr4(C5H12N)2 (BPCB) consisting of weakly coupled spin-1/2 Heisenberg antiferromagnetic ladders. Treating ladders in the gapless phase as Luttinger liquids, we are able to fully account for (i) the magnetic field dependence of the nuclear spin-lattice relaxation rate T1(-1) at 250 mK and for (ii) the phase transition to a...

This longitudinal study was conducted to describe the prevalence of exclusive breastfeeding and factors influencing it in urban (tertiary care hospital of Delhi) and rural (First Referral Unit in Haryana) settings. The exclusive breastfeeding rates were 38%, 30%, 24%, 20%, 16% and 1% at discharge, 1.5, 2.5, 3.5, 4.5 and 6 months, respectively in the urban and; 57%, 16%, 9%, 6%, 5% and 0% at dis...

BACKGROUND Cross-sectional studies show that walking is associated with depression among older adults, but longitudinal associations have rarely been examined. The aim of this study was to investigate longitudinal associations between walking frequency and depressive symptoms in older adults to determine which variable is the stronger prospective predictor of the other. DESIGN Longitudinal; f...

In response to recent nuclear-magnetic-resonance (NMR) measurements on the molecular cluster Mn12O12 acetate, we study the nuclear spin-lattice relaxation rate 1/T(1), developing a modified spin-wave theory. Our microscopic new approach, which is distinct from previous macroscopic treatments of the cluster as a rigid spin of S=10, not only excellently interprets the observed temperature and app...

The Norwegian prison inmates are burdened by problems before they enter prison. Few studies have managed to assess this burden and relate it to what occurs for the inmates once they leave the prison. The Norwegian Offender Mental Health and Addiction (NorMA) study is a large-scale longitudinal cohort study that combines national survey and registry data in order to understand mental health, sub...

A novel linear parameterization for the variable flip angle method for longitudinal relaxation time T(1) quantification from spoiled steady state MRI is derived from the half angle tangent transform, τ, of the flip angle. Plotting the signal S at coordinates x=Sτ and y=S/τ, respectively, establishes a line that renders signal amplitude and relaxation term separately as y-intercept and slope. Th...

conclusions baseline characteristics can inform who is at higher risk of renal disease mortality over the next 25 years. race, age, drinking, smoking, hypertension, and diabetes at baseline can all inform programs to reduce burden of kidney disease. results in multivariable model, race, age, drinking, smoking, hypertension, and diabetes at baseline predicted deaths due to renal disease. gender,...

A major focus of research on aging and dementia pertains to the prediction of future cognitive decline. Toward this end, several longitudinal studies are under way that are designed to explore early predictors of cognitive impairment. Neuroimaging techniques and biomarkers have shown promise in this application. Ultimately, it is likely that the use of a combination of neuroimaging and chemical...

Weight fluctuations pose serious challenges to people's health. Research suggests that the interplay between cognitive dietary restraint and counter-regulative overeating impairs weight control. In a random sample from the general population (N = 2733, 49% male), a longitudinal survey was conducted over 4 consecutive years (2010-2013). Self-reported weight was used to calculate the variance of ...

This longitudinal study explored adolescents' future-oriented cognitions, current activities, and later educational attainment using data from 317 adolescents (55% female; mean age = 14.98 years, SD = 0.85) followed into early adulthood. Aspirations and expectations regarding work and education showed modest stability from year to year. Exploration of the reciprocal relations between these cogn...