The levels of mineral elements in foliage of 10 Coprosma species growing in secondary forest in Dunedin were compared using canonical discriminant analysis. The results revealed distinctive patterns of nutrient accumulation separating divaricating and non-divaricating growth forms. Foliar concentrations of N, P and Na were higher in divaricating species, particularly those with small, membranou...

With the wide-spread availability of reactor-based sources and maturity of neutron activation methods, gamma activation analysis (GAA) has played something of a secondary role for routine elemental determination. However, the method has several significant benefits for analysis of mineral samples, including high sensitivity and specificity for targeted elements, the ability to measure large vol...

VALLEYS: REGIONAL DISTRIBUTIONS OF SECONDARY MINERAL-PHASES AS CLIMATE INDICATORS AND IMPLICATIONS FOR MARS. M. B. Wyatt, J. W. Head, D. R. Marchant, R. P. Harvey, P. R. Christensen, M. R. Salvatore, and U. N. Horodyskyj, Dept. of Geological Sciences, Brown University, Providence, RI 02912, Dept. of Earth Sciences, Boston University, Boston, MA 02215 Dept. of Geological Sciences, Case Western R...

Chronic vitamin D deficiency, inadequate calcium intake, and secondary hyperparathyroidism are common in obese individuals, placing them at risk for low bone mass and metabolic bone disease. After bariatric surgery, they are at even higher risk, owing to malabsorption and decreased oral intake. Meticulous preoperative screening, judicious use of vitamin and mineral supplements, addressing modif...

Nail-patella syndrome, also known as hereditary onycho-osteodystrophy, is a rare autosomal dominant disorder with pleiotropic phenotypic expression.The present report is of a nail-patella syndrome patient, a 26-year-old female, admitted to our NeuroMuscular Rehabilitation Clinic Division for neurological symptoms, secondary to a severe spondylolysthesis with bilateral L5 pedicle fracture. Durin...

The use of mineral trioxide aggregate (MTA) for complete endodontic obturation of an immature maxillary central incisor is reported. The injured tooth of a 9-year-old male was avulsed secondary to a sports-related traumatic event. Early attempts at pulpal revascularization of the replanted tooth proved unsuccessful, as evidenced by radiographic signs of external inflammatory root resorption in ...

Metabolic bone disease is a frequent extra-intestinal co-morbidity in newly diagnosed, mostly adult patients who have 70% low bone mineral density. Musculoskeletal signs and symptoms, osteopenia, osteoporosis and fractures are the most frequent manifestations. The etiology is multifactorial, however, micronutrient malabsorption, mainly of calcium and vitamin D, secondary hyperparathyroidism and...

which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. With interest, we read the article by Sidy Secket et al. on the mineral and bone disease in black African hemodialy-sis patients: A report from Senegal. The authors evaluated 118 end-stage renal disease (ESRD) patients under hemo-dialysis and showed that chronic kidney dis...

Vitamin D is an important physiologic regulator of bone and mineral metabolism. In chronic kidney disease, reduced renal production of calcitriol contributes to secondary hyperparathyroidism (SHPT). Consequently, supplementation with vitamin D sterols is an important treatment for SHPT and its associated mineral and bone disorders. However, doses of vitamin D sterols required to suppress parath...

We present a field application of a new in situ technique to analyze phase transformations of fine lead oxide particles (50-100mum) in different soils directly in the field over 18 months. After the first month of exposure to a calcareous sand we found newly precipitated secondary mineral phases on the lead oxide. The samples exposed to two loamy soils (Dystric Cambisol and Luvisol) showed only...