Results 71 to 80 of about 1,832,432 (304)

Mapping the “Supply–Demand–Flow” of Ecosystem Services for Ecosystem Management in China

open access: yesAdvanced Science, EarlyView.
This study develops a “supply–demand–flow” framework clarifies how ecosystem services move between regions by distinguishing potential and actual supply and demand. Using integrated biophysical–socioeconomic modeling, nine services in China were mapped.
Yikun Zhang   +3 more
wiley   +1 more source

The Spatiotemporal Pattern of Urban Expansion in China: A Comparison Study of Three Urban Megaregions

open access: yesRemote Sensing, 2017
Urban megaregions have emerged as a new urbanized form. However, previous studies mostly focused on urban expansion at the city scale, particularly for large cities.
Wenjuan Yu, Weiqi Zhou
doaj   +1 more source

Tracking of [14C]Polystyrene Nanoplastics in Pregnant Mice

open access: yesAdvanced Science, EarlyView.
This study investigates [14C]polystyrene nanoplastic ([14C]PS) translocation in late‐stage pregnant mice after intranasal (0.5 mg of [14C]PS on GD12, GD14, and GD16, n = 6) and intravenous administration (1.5 mg of [14C]PS on GD16, n = 6). 14C‐radiolabel allows quantitative tracking of unmodified polystyrene nanoplastics.
Olga Khaybullina   +2 more
wiley   +1 more source

Chitosan‐Carbon Dot Composite Materials Form a Leaf Surface Barrier to Mitigate the Enrichment and Invasion of Nanoplastics: From Leaf Interface to Systemic Response

open access: yesAdvanced Science, EarlyView.
Foliar spraying of CS‐CDs can form a film on the leaves of Brassica rapa, effectively reducing the enrichment and absorption of PS in the leaves, while increasing the biomass and nutrient content of the plants. In addition, CS‐CDs can also enrich the interfoliar microbial community and activate the plant's own defense metabolic pathways.
Beibei Zhao   +6 more
wiley   +1 more source

Sprawl and Urban Growth [PDF]

open access: yes
Cities can be thought of as the absence of physical space between people and firms. As such, they exist to eliminate transportation costs for goods, people and ideas and transportation technologies dictate urban form.
Edward L. Glaeser, Matthew E. Kahn
core  

A Dual‐Functional Biohybrid Nanorobot to Synergistically Eradicate Biofilm and Degrade Antibiotic Resistance Genes

open access: yesAdvanced Science, EarlyView.
A biohybrid nanorobot integrating lytic bacteriophage N4 with Pd nanozymes is developed for targeted eradication of multidrug‐resistant E. coli biofilms. Synergistic bacterial lysis and ROS‐mediated oxidation enable simultaneous biofilm removal and antibiotic resistance genes degradation, maintaining high efficacy in complex wastewater environments ...
Junzheng Zhang   +9 more
wiley   +1 more source

Ecosystem service of green infrastructure for adaptation to urban growth: function and configuration

open access: yesEcosystem Health and Sustainability, 2018
Objectives: (1) to explore what kind of green infrastructure (GI) meets the demand for urban ecological security of rapid urbanization areas; (2) to figure out how to determine the specific function and configuration of GI from ecosystem service ...
Yun-Cai Wang   +2 more
doaj   +1 more source

Urban structure and growth [PDF]

open access: yes
Most economic activity occurs in cities. This creates a tension between local increasing returns, implied by the existence of cities, and aggregate constant returns, implied by balanced growth.
Esteban Rossi-Hansberg   +1 more
core  

The demographic forces shaping New Zealand’s future. What population ageing [really] means [PDF]

open access: yes, 2011
This paper outlines the key demographic forces shaping New Zealand’s future. It ranges broadly across birth rates, life expectancy and migration to show how this converging demography will result in a regionally-disparate future.
Jackson, Natalie
core   +1 more source

Feeding the cities through urban agriculture the community esteem value [PDF]

open access: yes, 2016
The growth of global urban population produces an increase in food demand. With the aim of facing this demand, mainly concentrated in large urban areas, urban agriculture should be fostered to integrate traditional agriculture production, no longer ...
Finucci, Fabrizio   +2 more
core   +1 more source

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