Tropical tree species with high wood specific gravity have higher concentrations of wood phosphorus and are more efficient at resorbing it.

Phosphorus (P) and potassium (K) play important roles in plant metabolism and hydraulic balance, respectively, while calcium (Ca) and magnesium (Mg) are important components of cell walls. Although significant amounts of these nutrients are found in wood, relatively little is known on how the wood concentrations of these nutrients are related to other wood traits, or on the factors driving the resorption of these nutrients within stems. We measured wood nutrient (i.

The links between wood traits and species demography change during tree development in a lowland tropical rainforest.

One foundational assumption of trait-based ecology is that traits can predict species demography. However, the links between traits and demographic rates are, in general, not as strong as expected. These weak associations may be due to the use of traits that are distantly related to performance, and/or the lack of consideration of size-related variations in both traits and demographic rates.

Prognosis of Right Ventricular Systolic Dysfunction in Patients With Duchenne Muscular Dystrophy.

Background Chronic respiratory failure and heart involvement may occur in Duchenne muscular dystrophy. We aimed to assess the prognostic value of the right ventricular (RV) systolic dysfunction in patients with Duchenne muscular dystrophy. Methods and Results We studied 90 genetically proven patients with Duchenne muscular dystrophy from 2010 to 2019, to obtain respiratory function and Doppler echocardiographic RV systolic function.

Demographic Factors and Medical School Experiences Associated with Students' Intention to Pursue Orthopaedic Surgery and Practice in Underserved Areas.

Unlabelled: Physician shortages across the United States will affect access to orthopaedic care for patients. Orthopaedic surgery is predicted to have one of the largest shortages among surgical subspecialties by 2025, which will disproportionally affect patients in medically underserved areas. This study examines characteristics and experiences of graduating medical students interested in orthopaedic surgery who intend to practice in underserved areas (IPUAs).