Results 91 to 100 of about 83,891 (346)

Row Crops and the U.S. Agricultural Trade Deficit: Recent Trends and Policy Issues

open access: yesApplied Economic Perspectives and Policy, EarlyView.
ABSTRACT Row crops such as soybeans, corn, wheat, and cotton are the backbone of the U.S. farm sector, accounting for around $60 billion of exports in 2023. While U.S. row crop exports remain robust, growing concerns over the rising U.S. agricultural trade deficit underscore the need to appraise the ongoing market and policy dynamics affecting the ...
William Ridley, Stephen Devadoss
wiley   +1 more source

AASLD practice guidance on drug, herbal, and dietary supplement–induced liver injury

open access: yes, 2022
Hepatology, EarlyView.
Robert J. Fontana   +6 more
wiley   +1 more source

Detection of the Temperature Dependence of the White Dwarf Mass–Radius Relation with Gravitational Redshifts

open access: yesThe Astrophysical Journal
Models predict that the well-studied mass–radius relation of white dwarf stars depends on the temperature of the star, with hotter white dwarfs having larger masses at a given radius than cooler stars.
Nicole R. Crumpler   +10 more
doaj   +1 more source

White Dwarf Pulsations [PDF]

open access: yesHighlights of Astronomy, 1980
It has been known for a long time that white dwarfs are pulsationally unstable if nuclear burning takes place in their envelopes. Perturbation of energy generation rate promotes pulsational instability and this effect is frequently referred to as ε-mechanism.
openaire   +2 more sources

Gaiaphotometry for white dwarfs [PDF]

open access: yesAstronomy & Astrophysics, 2014
Context. White dwarfs can be used to study the structure and evolution of the Galaxy by analysing their luminosity function and initial mass function. Among them, the very cool white dwarfs provide the information for the early ages of each population.
Piotr M. Kowalski   +8 more
openaire   +7 more sources

Down Syndrome in Maternity Care: Mothers' Experiences of Prenatal Screening

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT Prenatal screening for Down syndrome (DS) is offered to expectant parents receiving antenatal care in many countries, with an emphasis on providing parents with the opportunity to make informed choices about their pregnancy. We examined experiences of prenatal screening among mothers of children with DS living in England, Scotland, or Wales ...
Tamar Rutter   +5 more
wiley   +1 more source

Measuring the Mass–Radius Relation of White Dwarfs Using Wide Binaries

open access: yesThe Astrophysical Journal
Measuring the mass–radius relation of individual white dwarfs is an empirically challenging task that has been performed for only a few dozen stars. We measure the white dwarf mass–radius relation using the gravitational redshifts and radii of 135 white ...
Stefan Arseneau   +12 more
doaj   +1 more source

Observations of Ultracool White Dwarfs [PDF]

open access: yesThe Astrophysical Journal, 2001
Accepted to Astronomical Journal, March ...
Oppenheimer, B. R.   +8 more
openaire   +6 more sources

Management of Cardiovascular Health Issues in Turner Syndrome: Expert Insights and Expanded Recommendations From the 2024 Guideline Development Team

open access: yesAmerican Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Turner syndrome (TS) is frequently complicated by congenital heart disease (CHD). While left‐sided lesions such as bicuspid aortic valve (BAV) and coarctation of the aorta are the most common structural heart lesions in TS, other anomalies, such as aortic arch malformations, hypoplastic left heart syndrome (HLHS), persistent left superior vena
Katya de Groote   +9 more
wiley   +1 more source

Non-LTE spectral analyses of the lately discovered DB-gap white dwarfs from the SDSS

open access: yes, 2009
For a long time, no hydrogen-deficient white dwarfs have been known that have effective temperature between 30 kK and < 45 kK, i.e. exceeding those of DB white dwarfs and having lower ones than DO white dwarfs.
Dreizler S   +3 more
core   +1 more source

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