Results 51 to 60 of about 1,047,460 (310)

Effect of an agri-environmental measure on nitrate leaching from a beef farming system in Ireland [PDF]

, 2015
peer-reviewedAgricultural nitrogen (N) management remains a key environmental challenge. Improving N management is a matter of urgency to reduce the serious ecological consequences of the reactive N.
Brophy, C., Carton, Owen T., Connolly, John, Drennan, Michael J, Jahangir, Mohammad M. R., Lenehan, J.J., Richards, Karl G.   +6 more
core   +1 more source

Understanding bio‐based polymers: A study of origins, properties, biodegradation and their impact on health and the environment

FEBS Open Bio, EarlyView.
This review provides an overview of bio‐based polymer sources, their unique functional properties and their environmental impact, and addresses their role as sustainable alternatives. It discusses end‐of‐life options, including composting and anaerobic digestion for renewable energy.
Sabina Kolbl Repinc, Blaž Stres, Mirica Karlovits, Igor Karlovits, Petra Jerič, Ondrej Panák, Anja Verbič, Blaž Likozar, Uroš Novak   +8 more
wiley   +1 more source

Possíveis efeitos alelopaticos de Brachiaria decumbens sobre o crescimento inicial de limão cravo (Citrus limonia) The possible allelopathic effects of Brachiaria decumbens on initial development of root stock of Citrus limonia

Planta Daninha, 1997
Foram estudados os possíveis efeitos alelopáticos da incorporação da matéria seca da parte aérea de Brachiaria decumbens, ao substrato, nas concentrações de 0, 1,5 e 3,0% (p/p) sobre o crescimento inicial de limão cravo (Citrus limonia Osbeck), em casa ...
L. S. Souza, E. D. Velini, D. Martins, C. A. Rosolem   +3 more
doaj   +1 more source

Monitoring of Finnish arable land: changes in soil quality between 1987 and 1998 [PDF]

, 2002
This study is part of the long-term monitoring of Finnish arable land and it is based on soil analyses of 705 monitoring sites sampled in 1998. The same sites were sampled twice previously,in 1974 and 1987.
Mäkelä-Kurtto, Ritva, Sippola, Jouko
core   +2 more sources

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source

DOC and DON from grass-clover - results from a field experiment [PDF]

, 2005
The C and N dynamics in perennial grass-clover mixtures are not fully understood although such mixtures dominate temperate grassland. The co-existence of clover and grass involves both competition for and transfer of nutrients between the species.
Høgh-Jensen, Henning, Rasmussen, Jim
core  

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Dominance of 2:1 clay minerals in soil potassium across a weathering gradient: Insights from XANES speciation and sequential extraction

Soil & Environmental Health
Potassium (K) is essential in the soil–plant–human continuum, yet its chemical speciation in soils with different weathering stages and in their clay fractions remains poorly understood.
Worachart Wisawapipat, Apinya Saentho, Itsada Bunthong, Piyapas Sricharoenvech, Sompin Mahakot, Wantana Klysubun   +5 more
doaj   +1 more source

In Situ Constructed Magnetic Core‐Shell Hydrogen‐Bonded Organic Framework‐on‐Metal–Organic Framework Structure: an Efficient Catalyst for Peroxymonosulfate Activation

Advanced Functional Materials, EarlyView.
In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du, Chenhui Ding, Chao Deng, Susanta Banerjee, Seema Agarwal   +4 more
wiley   +1 more source

Atividade e especiação química na solução afetadas pela adição de fósforo em latossolo sob plantio direto em diferentes condições de acidez Activity and chemical speciation of soil solution of an oxisol under no-tillage with different acidity conditions as affected by phosphorus addition

Revista Brasileira de Ciência do Solo, 2006
No sistema plantio direto (SPD), ocorre acúmulo superficial de resíduos de culturas e de nutrientes, especialmente P e Ca, que contribuem para a inativação do Al3+ em solução.
Antonio Nolla, Ibanor Anghinoni
doaj   +1 more source