Results 41 to 50 of about 5,832,061 (187)

Impacts of Rainfall Characteristics and Vegetation Cover Patterns on Slope Runoff and Sediment Yields in the Three Gorges Reservoir Area

open access: yesShuitu Baochi Xuebao
[Objective] This study was aimed to explore the impacts of rainfall characteristics and vegetation cover patterns on slope hillslope runoff and sediment yields in the Three Gorges Reservoir area, and to adapt to the new needs of the prominent ...
SONG Minxin   +5 more
doaj   +1 more source

Trade-offs and synergies between ecosystem services on the Tibetan Plateau

open access: yesEcological Indicators
Ecosystem services (ESs) are the cornerstone of human well-being. On the Tibetan Plateau and in its subregions, understanding the effects of the spatiotemporal continuity in the trade-offs/synergies of ESs, and identifying their drivers, is crucial for ...
Zhengrong Yuan   +4 more
doaj   +1 more source

Research on measurement of specific energy of crushing based on particle compression experimen

open access: yesMeikuang Anquan, 2022
In order to better characterize the strength characteristics of coal, according to P. R. Rittinger’s new surface theory, a determination method of specific energy of crushing based on particle compression experiment is proposed. Based on this method, the
LI Zhuang, ZHANG Hao, DENG Cunbao
doaj   +1 more source

Changes in global carbon use efficiency in the 21st century and the potential controlling factors

open access: yesEnvironmental Research Letters
Extensive studies have demonstrated the spatiotemporal changes in carbon use efficiency (CUE) and its driving factors over the past three decades. However, how the global CUE will change and to what extent the CUE is affected by the dominant factor in ...
Guo Chen, Tiantian Chen, Li Peng
doaj   +1 more source

Electrodeposition of High-Surface-Area IrO2 Films on Ti Felt as an Efficient Catalyst for the Oxygen Evolution Reaction

open access: yesFrontiers in Chemistry, 2020
Under acidic conditions, IrO2 exhibits high catalytic activity with respect to the oxygen evolution reaction (OER). However, the practical application of Ir-based catalysts is significantly limited owing to their high cost in addition to the scarcity of ...
Yu Jin Park   +11 more
doaj   +1 more source

Surface bodies and p-affine surface area

open access: yesAdvances in Mathematics, 2004
The authors give a new characterization of Lutwak's (extended) \(p\)-affine surface area \[ O_p(K):=\int_{\partial K}\frac{\kappa(x)^{\frac {p}{n+p}}} {h(x)^{\frac{n(p-1)}{n+p}}}d\mu_{\partial K}(x)\quad (-\infty \leq p\leq+\infty,\;p\neq -n) \] where \(\kappa\) denotes the generalized Gauss curvature, \(h\) the support function and \(\mu_{\partial K}\)
Schütt, Carsten, Werner, Elisabeth
openaire   +1 more source

Suppression of cell-spreading and phagocytic activity on nano-pillared surface: in vitro experiment using hemocytes of the colonial ascidian Botryllus schlosseri. [PDF]

open access: yes, 2015
Nano-scale nipple array on the body surface has been described from various invertebrates including endoparasitic and mesoparasitic copepods, but the functions of the nipple array is not well understood.
Ballarin, Loriano   +5 more
core  

Catalyst component interactions in nickel/alumina catalyst [PDF]

open access: yesActa Periodica Technologica, 2007
The influence of nickel loading (5; 10; 20 wt% Ni), temperature of heat treatment (400; 700; 1100°C) and way of catalyst preparation on the catalyst component interactions (CCI) in the impregnated, mechanical powder mixed and co-precipitated catalyst was
Kiš Erne E.   +2 more
doaj   +1 more source

Properly embedded, area-minimizing surfaces in hyperbolic $3$-space

open access: yes, 2014
We prove prove a bridge principle at infinity for area-minimizing surfaces in the hyperbolic space $\mathbb{H}^3$, and we use it to prove that any open, connected, orientable surface can be properly embedded in $\mathbb{H}^3$ as an area-minimizing ...
Martin, Francisco, White, Brian
core   +1 more source

Responses of soil detachment capacity to different rock dip angles in karst trough valley

open access: yesGeoderma
The karst region is distinguished by pronounced and complex soil erosion, while the bedrock strata dip and root traits significantly influence the erosion slope, thereby altering the hydrodynamic characteristics and impacting Dc.
Lisha Jiang   +6 more
doaj   +1 more source

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