User profiles for D. Yonkin

Jonathan D Tonkin

University of Canterbury
Verified email at canterbury.ac.nz
Cited by 4288

Accumulation of deicing salts in soils in an urban environment

MA Cunningham, E Snyder, D Yonkin, M Ross… - Urban …, 2008 - Springer
Examining rates of deicing salt accumulation and leaching in urban soils is important for
understanding the distribution and movement of salt in the environment. We examined autumn …

Sex and handedness differences in cerebral blood flow during rest and cognitive activity

…, RE Gur, WD Obrist, JP Hungerbuhler, D Younkin… - Science, 1982 - science.org
Cognitive activity resulted in increased flow of blood to the cerebral hemispheres. The increase
was greater to the left hemisphere for a verbal task and greater to the right hemisphere …

Longitudinal changes in brain magnetic resonance imaging findings in children with sickle cell disease

…, L Guarini, RA Zimmerman, DP Younkin… - Blood, The Journal …, 2002 - ashpublications.org
Children with sickle cell anemia (HbSS) are at high risk for neurologically overt cerebral
infarcts associated with stroke and neurologically silent cerebral infarcts correlated with …

Silent infarction as a risk factor for overt stroke in children with sickle cell anemia: a report from the Cooperative Study of Sickle Cell Disease

…, WC Wang, DL Wethers, DP Younkin… - The Journal of …, 2001 - Elsevier
Objective: To determine whether children with homozygous sickle cell anemia (SCD) who
have silent infarcts on magnetic resonance imaging (MRI) of the brain are at increased risk for …

KCNT1 gain of function in 2 epilepsy phenotypes is reversed by quinidine

…, C Trager, CA Reid, A Venkat, DP Younkin… - Annals of …, 2014 - Wiley Online Library
… We thank the families for their participation in this study; Dr D. Lowenstein and colleagues
from the Epilepsy Phenome/Genome Project (epgp.org; supported by grant NS053998 from …

Cerebral metabolic effects of neonatal seizures measured with in vivo 31P NMR spectroscopy

DP Younkin, M Delivoria‐Papadopoulos… - Annals of Neurology …, 1986 - Wiley Online Library
In vivo phosphorus 31 nuclear magnetic resonance ( 31 P NMR) spectroscopy was used to
evaluate changes in cerebral high‐energy phosphate compounds in 8 infants with seizures. …

α‐Amino‐3‐hydroxy‐5‐methyl‐4‐isoxazolepropionate (AMPA) receptors mediate excitotoxicity in the oligodendroglial lineage

A Yoshioka, M Hardy, DP Younkin… - Journal of …, 1995 - Wiley Online Library
… was blocked by 20 p,M CNQX but not by 100 IM D,l.-threo-ß-hydroxyasparlate (Fig. 3) . The
cultures exposed to 5 mM glutamate with 100 1jM D,l.-threo-,ß-hydroxyaspartate showed an …

Factor V Leiden mutation: an unrecognized cause of hemiplegic cerebral palsy, neonatal stroke, and placental thrombosis

…, S Ryan, J Hunter, DP Younkin - Annals of Neurology …, 1997 - Wiley Online Library
Activated protein C resistance caused by an Arg 506 Gln mutation in the factor V gene (factor
V Leiden mutation) is the most common cause of familial thrombosis. This mutation is …

The 1990 elections in Myanmar: Broken promises or a failure of communication?

D Tonkin - Contemporary Southeast Asia, 2007 - JSTOR
The National League for Democracy (NLD) won a resounding victory in the May 1990 general
elections, but was unable to persuade the ruling military junta to agree to the transfer of …

31P NMR studies in Duchenne muscular dystrophy: Age‐related metabolic changes

DP Younkin, P Berman, J Sladky, C Chee, W Bank… - Neurology, 1987 - AAN Enterprises
To evaluate possible progressive metabolic changes in Duchenne muscular dystrophy, we
used 31 P nuclear magnetic resonance spectroscopy to measure high-energy phosphate …