Results 81 to 90 of about 11,772 (309)

Rural demographic change in the new century: slower growth, increased diversity [PDF]

open access: yes, 2012
This brief examines rural demographic trends in the first decade of the twenty-first century using newly available data from the 2010 Census. The rural population grew by just 2.2 million between 2000 and 2010—a gain barely half as great as that during ...
Johnson, Kenneth M.
core   +1 more source

Coupling Water Purification and Carbon Sequestration at Various Spatial Scales From Supply and Demand Perspective

open access: yesLand Degradation &Development, EarlyView.
ABSTRACT Balancing ecosystem‐service supply and demand is central to understanding both the natural and social dimensions of ecosystem services and to enhancing human well‐beings. Concurrently, collaborative efforts are underway to improve multiple ecosystem services, including the promotion of carbon neutrality and water purification (WP) within basin
Jing Cheng   +5 more
wiley   +1 more source

A relação entre capital humano, inovação e internacionalização das micro e pequenas empresas: o caso da fileira agroalimentar do Vale do Tejo [PDF]

open access: yes, 2017
This paper aims to contribute empirically to a better understanding of the relationship between human capital formation in micro and small enterprises and the respective behaviors in innovation and internationalization.
Oliveira, Pedro
core  

Progress on the Application of Polymers of Intrinsic Microporosity for the Adsorption of Organic Contaminants

open access: yesChemistryOpen, EarlyView.
The pictorial illustration of the applications of polymers of intrinsic microporosity extraordinary porous organic polymers with high surface areas, pore radii, pore volumes, high permeability, high diffusivity, high selectivity, and high thermal stability, as suitable filters or purifiers for water contaminated with pharmaceutical and organic dyes ...
Martins O. Omorogie
wiley   +1 more source

A review of high nature value farming systems in Europe: Biodiversity, ecosystem services, drivers, innovations and future prospects

open access: yesPeople and Nature, EarlyView.
Abstract Farming systems of high natural and cultural value represent approximately 30% of farmlands in the European Union and are associated with a high species and habitat diversity and/or the presence of species of European conservation concern. This study aims to synthesize the existing knowledge on the assessment of biodiversity and ecosystem ...
Elsa Varela   +4 more
wiley   +1 more source

Internal Migration and Regional Population Dynamics in Europe: Romanian Case Study [PDF]

open access: yes, 1997
The report analyses population migration and change in Romania over the period 1984-1994. The analysis of population change is conducted for 2948 communes and towns, the finest administrative division for which population data are available.
Berinde, D.   +4 more
core  

Ultrafast Catalytic Decomposition Reaction Using a ZIF‐67@Celluolose Nanofiber Composite‐Based Cobalt/ Nitrogen Co‐Doped Nanoporous Carbon for Water Treatment

open access: yesRare Metals, EarlyView.
ABSTRACT Recently, cobalt/nitrogen co‐doped materials have emerged as heterogeneous catalysts to activate peroxymonosulfate (PMS) and have been applied to advanced oxidation processes for environmental remediation. However, their recyclability and reusability remain major barriers to practical application.
Wen‐Kai Zhu   +11 more
wiley   +1 more source

THE EFFECTS OF RURALITY AND INDUSTRIAL SPECIALIZATION ON INCOME GROWTH: U.S. COUNTIES 2000 TO 2003* [PDF]

open access: yes
This paper— part of a comprehensive project on industry clusters and rural competitiveness— explores the role of industrial specialization and rurality on economic performance for counties in the continental United States. Regression models are estimated
Brigitte S. Waldorf
core  

The changing faces of America\u27s children and youth [PDF]

open access: yes, 2010
The U.S. Census Bureau estimates indicate that between July 2008 and July 2009, 48.6 percent of the 4 million children born in the United States were minorities.
Johnson, Kenneth M., Lichter, Daniel T.
core   +1 more source

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