Pebble accretion is recognized as a significant accelerator of planet formation. Yet only formulae for single-sized (monodisperse) distribution have been derived in the literature. These can lead to significant underestimates for Bondi accretion, for which the best accreted pebble size may not be the one that dominates the mass distribution. We derive in this paper the polydisperse theory of pebbl

Historiska aktörer är långt ifrån frånvarande i historieforskningen. Varje land och varje tidsepok har sin beskärda del av biografier över framstående vetenskapsmän, intellektuella och utbildningsreformatorer. Trots detta är det inte fel att hävda att de teoretiska strömningar som har satt sin prägel på historiska och sociologiska studier av kunskap sedan 1960-talet har betonat strukturer framför Historical actors are central to the history of knowledge as they are to all historical scholarship. Every country, every era has its biographies of eminent scientists, intellectuals, and educational reformers. Yet the theoretical currents that have left their mark on the historical and sociological study of knowledge since the 1960s have emphasized structures over actors, collectives over individ

Aims: To develop a suite of quality indicators (QIs) for the evaluation of the care and outcomes for adults with pulmonary arterial hypertension (PAH). Methods and results: We followed the European Society of Cardiology (ESC) methodology for the development of QIs. This included (i) the identification of key domains of care for the management of PAH, (ii) the proposal of candidate QIs following sy

The art of living and the art of eating: Professor Linnaeus recommends. By Gunnar Broberg. As professor of medicine, Linnaeus taught dietetics. He followed the pattern outlined by Galen and Regimen salernitatis, adding an extensive material originating from general cultural history and his own experience.Early in his life he wrote Diaeta naturalis, a collection of rules focusing the blessings of n

Background: Postural orthostatic tachycardia syndrome (POTS) is a heterogeneous condition predominantly affecting autonomic control of the cardiovascular system. Its extensive symptom diversity implies multi-organ involvement that interacts in ways still requiring full exploration. Current understanding of POTS pathophysiology suggests alterations in the renin–angiotensin–aldosterone system as a p

The article opposes the view that marginality is a decisive trait of Swedish alternative care practitioners. Instead, factors such as the structural looseness of these occupational roles and the fact that the practitioners belong to no specific work organization is stressed. The practitioners have to demonstrate the legitimacy of their work and enforce the boundaries around their work ethics by th

When goals for assistance to a group are defined from 'the outside', what happens to the group members' own wishes? In the regulations concerning the food for elderly long-term-care patients in Swedish hospitals, the exact vitamins and nutrients which every meal should contain are indicated very precisely. What happens in this situation to the patients' own wishes? The question was actualized when

Above-ground biomass (AGB) is considered an essential climate variable that underpins our knowledge and information about the role of forests in mitigating climate change. The availability of satellite-based AGB and AGB change (ΔAGB) products has increased in recent years. Here we assessed the past decade net ΔAGB derived from four recent global multi-date AGB maps: ESA-CCI maps, WRI-Flux model, J

Reviews the book, Using the Bodies of the Dead: Legal, Ethical and Organisational Dimensions of Organ Transplantation by Nora Machado (1998). Machado's book is important for impressing this fact on the reader. Machado describes the strains that arise when an individual is reduced from being someone's next of kin, the focus of a private and above all family-oriented situation, to being a body, and

Which are the features marking modern motherhood? Our attempts to answer this are based on an investigation among young working-class mothers. Our focus is norms pertaining to the relation between mother and child. Some of these seem distinctly subcultural working-class norms, while others are supposed to be more general. However, norms here presented are held to be the marks of young families, in