Results 81 to 90 of about 135,178 (359)

Single‐Atom Cobalt Species on Curved Hollow Carbon Sphere: Breaking Linear Scaling Relationship Limitations in Electrocatalytic Deactivation of Dilute Antibiotic Pollutants

open access: yesAdvanced Science, EarlyView.
A cobalt (Co)‐SACs consisting of single‐atom Co anchored on a nitrogen‐doped hollow porous carbon sphere (Co1/N‐HCS) is fabricated for electrocatalytic hydrodechlorination of dilute antibiotics. The hollow porous architecture of N‐HCS concentrates the antibiotics, while its curved surface promotes proton transfer at the Co1 site via localized electric ...
Jiahong Zou   +8 more
wiley   +1 more source

Състояние на почвеното органично вещество в Черноземи от Северна България

open access: yesПочвознание, агрохимия и екология, 2011
Two representative soil profiles of Chernozems from Northern Bulgaria were investigated. The soil organic matter status was analyzed end evaluated.
Иванка Любенова   +1 more
doaj  

Guide to the nature and methods of analysis of the clay fraction of tephras from the South Auckland region, New Zealand. [PDF]

open access: yes, 1983
The manual outlines some of the more common laboratory procedures available for qualitatively and quantitatively analysing the composition of the tephric clays, many of which are difficult to determine because of their short range order or 'amorphous ...
Lowe, David J., Nelson, Campbell S.
core   +1 more source

The activation of hydrogen by excited mercury atoms [PDF]

open access: yes, 1925
That mercury atoms excited by absorption of the line 2537Å are able to activate various kinds of atoms by collisions of the second kind has been shown in several different ways.
Mitchell, Allan C. G.
core   +1 more source

Scalable Upcycling of Spent Lithium‐Ion Battery Anodic Graphite to Electronic‐Grade Graphene

open access: yesAdvanced Science, EarlyView.
Graphite anodes from spent lithium‐ion batteries are upcycled into electronic‐grade graphene nanoplatelets for highly conductive screen printing inks (> 104 S m−1). Screen‐printed micro‐supercapacitors confirm the utility of the upcycled graphene (1.78 mF/cm2 capacitance for > 10 000 cycles). Life cycle assessment and techno‐economic analysis highlight
Janan Hui   +8 more
wiley   +1 more source

Proximity Engineering of Fe‒N4 Twins for Oriented Generation of Singlet Oxygen for Hospital Wastewater Treatment

open access: yesAngewandte Chemie, EarlyView.
Precise modulation of Fe–N4 site distances constructs spin‐regulated Fe–N4 twins, triggering a volcano‐type Fenton‐like activity and promoting oriented singlet oxygen generation. The twin‐site catalyst enables highly selective and efficient hospital wastewater purification with simultaneous pharmaceutical degradation and disinfection under low ...
Xinhao Wang   +10 more
wiley   +2 more sources

Бонитетна оценка на хумусното съдържание за отглеждане на различни селскостопански култури

open access: yesПочвознание, агрохимия и екология, 2011
The soils, climate аnd relief characteristics expressed by numerical values (evaluation rates) mainly reflected in the land evaluation. The quantity and quality of humus defines the soil fertility.
Венета Кръстева
doaj  

CO2FIX at the landscape level - an application for the Veluwe area, the Netherlands [PDF]

open access: yes, 2001
The carbon fixation model CO2FIX was adapted to run on landscape scale, and was applied to the Veluwe area, a forested region in the Netherlands. After a simulation of 500 years, the average carbon stock per hectare in the forest products compartment is ...
Nabuurs, G.J., Schelhaas, M.J.
core   +1 more source

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