Results 141 to 150 of about 4,706,773 (336)

Health Benefits of Urban Agriculture [PDF]

open access: yes, 2003
Health professionals increasingly recognize the value of farm-and garden-scale urban agriculture. Growing food and non-food crops in and near cities contributes to healthy communities by engaging residents in work and recreation that improves individual ...
Anne C. Bellows   +2 more
core  

Enhancing the Photocatalytic Performance of Carbon Nitrides Through Controlled Local Structure Modification

open access: yesAdvanced Functional Materials, EarlyView.
This work utilizes poly(heptazine imides) as a model system to demonstrate how fine‐tuning the crystal structure influences the photocatalytic properties of layered carbon nitrides in the hydrogen evolution reaction. In particular, the nature of rotational defects and the hydration shell of cations are key contributors to enhanced hydrogen evolution ...
Diana V. Piankova   +11 more
wiley   +1 more source

Research previews

open access: yesCalifornia Agriculture, 1970
California Agriculture - All ...
California Agriculture
doaj  

Fundamentals of Nutrient Management: Why Nutrient Replacement is Essential in Organic and all Agriculture [PDF]

open access: yes, 2008
There is a belief, going back to the foundation of organic agriculture, that nutrient replacement, i.e., the use of ‘fertilisers’, within organic agriculture is not required.
Merfield, Charles
core  

Self‐Assembled Heterosymmetric Structure with Tunable Polarization Optics for Reversible Matrix Encryption

open access: yesAdvanced Functional Materials, EarlyView.
Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song   +7 more
wiley   +1 more source

A research brief… potassium role found essential in stomatal functioning for plant life

open access: yesCalifornia Agriculture, 1970
RECENT EXPERIMENTS have shed new light on two age-old and seemingly unrelated questions: why potassium is essential for plant growth; and how the stomata on leaves open and close.
California Agriculture
doaj  

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