SPECIALTY GRAND CHALLENGE article Front. Sustain. Cities, 15 December 2022Sec. Climate Change and Cities Volume 4 - 2022 | https://doi.org/10.3389/frsc.2022.1070154

Avian leukosis viruses (ALVS) cause different types of tumours in poultry and can affect the health and egg production of the birds. To investigate the presence of the virus in chicken layer flocks in Shiraz, 222 egg albumen from local layer breeder (25 eggs), local layer grand parent (30 eggs), broiler breeder (60 eggs), commercial layer (46 eggs) and broiler grand parent (61 eggs) were tested...

OBJECTIVE To determine whether high maternal parity has any effect on pregnancy outcome independent of other maternal characteristics. DESIGN AND SETTING Retrospective observational study using the database of a referral obstetric unit in a 280-bed regional hospital in far north Queensland. PARTICIPANTS All 15 908 women who had singleton births between 1992 and 2001, comprising 653 women wi...

We consider the bipartite cut and the judicious partition problems in graphs of girth at least 4. For the bipartite cut problem we show that every graph G with m edges, whose shortest cycle has length at least rX4; has a bipartite subgraph with at least m 2 þ cðrÞm r rþ1 edges. The order of the error term in this result is shown to be optimal for r 1⁄4 5 thus settling a special case of a conjec...

Contributing Authors: Arild Angelsen (Norway), Kazumasu Aoki (Japan), Kenji Asano (Japan), Michele Betsill (USA), Rishikesh Ram Bhandary (Nepal / USA), Nils-Axel Braathen (France / Norway), Harriet Bulkeley (UK), Dallas Burtraw (USA), Ann Carlson (USA), Luis Gomez-Echeverri (Austria / Colombia), Erik Haites (Canada), Frank Jotzo (Germany / Australia), Milind Kandlikar (India / Canada), Osamu Ki...

Schumpeter chastised Ricardo for his alleged "vice" - the so-called "Ricardian Vice" - of drawing far reaching policy conclusions from utterly simplistic models, which, moreover, were underdetermined. The paper first argues that Schumpeter saw Ricardo's approach to the theory of value and distribution through a marginalist lens and therefore arrived at a distorted picture of the latter. Several...

Just as for people, a new year is a good time for a journal to stop, look back, and start a new beginning, hoping for a good season ahead. This is what we have been doing each year in the Croatian Medical Journal for the last twenty years. We will probably never stop doing this, even when we become an august journal, because the world of scientific publishing rapidly changes. This year, we pres...

The journals of the International Union of Crystallography have grown in size and number over the past 60 years to match developments in scientific practice and technique. High quality of publication has always been at the forefront of editorial policy and ways in which this has been achieved are described. In particular, the development of standard exchange and archive formats for crystallogra...

We introduce here the inaugural issue of the new scientific journal Translation. The overarching aim of this endeavor is to establish a new forum for a broad spectrum of research in the area of protein synthesis in living systems ranging from structural biochemical, evolutionary and regulatory aspects of translation to the fundamental questions related to post-translational control of somatic p...