Results 71 to 80 of about 463,991 (359)

Multifunctional Tailoring of Fertilizer Composites Directly Derived From Phosphate Rock

open access: yesAdvanced Science, EarlyView.
A novel phosphorus‑sulfur mixed acid with urea (PSU) activation system converts low‑grade phosphate rock (LPR) into multifunctional fertilizer composites (MFCs). MFCs feature porous structures, high nutrient‑activation efficiency, superior slow‑release, and enhanced crop growth, offering a sustainable solution for integrated nutrient management and ...
Zenglian Qi   +13 more
wiley   +1 more source

Characteristics of water stable isotopes and runoff sources of a small permafrost basin in northeastern China

open access: yesFrontiers in Earth Science
Permafrost degradation may have significant impacts on regional water cycles, while little is known about the recharge sources of runoff in permafrost regions, hindering our capability to predict river discharges.
Boxiong Zhang   +8 more
doaj   +1 more source

A Review Of Road‒Related Soil Erosion: An Assessment Of Causes, Evaluation Techniques And Available Control Measures

open access: yesEarth Sciences Research Journal, 2015
Road construction has increased significantly worldwide in the last decades to meet the demands of the increasing human population and this has led to serious soil erosion problems, the bulk of which is unaccounted for, especially in the developing world.
Khoboso Elizabeth Seutloali   +1 more
doaj   +1 more source

Assessment of Effectiveness of Buffer Zones in Removing Impurities in Runoff from Areas Treated with Poultry Litter. Part II: Source Areas to Buffer Areas Ratio Effects [PDF]

open access: yes, 1995
Vegetative filter strips (VFS) are known to reduce runoff losses of nutrients. solids. and other materials from land areas treated with fertilizers . Although VFS effectiveness is known to depend partially on the relative lengths of filter and pollutant ...
Daniel, T. C.   +2 more
core   +2 more sources

Efficient methods of automatic calibration for rainfall-runoff modelling in the Floreon+ system [PDF]

open access: yes, 2017
Calibration of rainfall-runoff model parameters is an inseparable part of hydrological simulations. To achieve more accurate results of these simulations, it is necessary to implement an efficient calibration method that provides sufficient refinement of
Kuchař, Štěpán   +5 more
core   +1 more source

Free‐Volume Regulation Enables Significantly Enhanced Electrical Breakdown via Short‐Chain Molecular Spatial‐Positioning Intercalation into Poly(vinylidene fluoride)

open access: yesAdvanced Science, EarlyView.
An innovative molecular spatial‐positioning shimming strategy is developed to optimize the electrical properties of poly(vinylidene fluoride) (PVDF). By intercalating polyethylene wax (PE wax) short‐chain molecules into PVDF's free volume, the film achieves a significantly enhanced energy density of 32.67 J cm−3.
Ziyue Wang, Jiyang Xie, Wanbiao Hu
wiley   +1 more source

Modelling nitrogen fate from urea applied to near-trench rice paddy field

open access: yes浙江大学学报. 农业与生命科学版, 2007
A simple model based on the theory of ‘first-order reaction’ kinetics and water-nitrogen coupled balance was developed to quantify N losses from urea applied to a near-trench rice paddy field, considering all the N transformations such as urea hydrolysis,
LIANG Xin-qiang   +4 more
doaj   +1 more source

Lattice Strain and Piezoelectric Field Modulated Piezo‐Photocatalytic Nitrate‐to‐Ammonia Conversion in Chemically Bonded S‐Scheme Heterojunction

open access: yesAdvanced Science, EarlyView.
Under ultrasonic excitation, 5% compressive strain optimizes the ZnO@ZnSe heterojunction. The strain enhances H2O dissociation into active *H on Zn sites and NO3− adsorption on Se sites, facilitating their hydrogenation into NH4+ with optimal kinetics and thermodynamics. Abstract Piezo‐photocatalysis provides an efficient approach to harness mechanical
Shuo Liu   +8 more
wiley   +1 more source

Erosion Process and Temporal Variations in the Soil Surface Roughness of Spoil Heaps under Multi-Day Rainfall Simulation

open access: yesRemote Sensing, 2020
The extensive artificially accelerated erosion of spoil heaps on newly engineered landforms is a key ecological management point requiring better understanding.
Jiaorong Lv, Yongsheng Xie, Han Luo
doaj   +1 more source

Runoff

open access: yes, 1973
Contained within the 4th Edition (1974) of the Atlas of Canada is a map that shows average annual runoff patterns. There is a second map, accompanied by bar graphs for selected gauging stations of representive rivers, which expresses the volume of flow by months as percentages of the annual average volume.
openaire   +1 more source

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