搜索结果: 1-15 共查到“N and P pools”相关记录29条 . 查询时间(0.046 秒)
Influence of Soil Properties on P Pools and Its Effect on Forest Productivity in Mediterranean Calcareous Soils
calcareous soils Mediterranean ecosystem phosphorus availability phosphorus fractionation semiarid environment sequential extraction
2023/12/11
Although soil phosphorus is essential for vegetation growth it is not always found in labile forms, hampering its absorption by plants, and is limited in forest ecosystems. This study explores soil P ...
Soil Organic Carbon Pools and Associated Soil Chemical Properties under Two Pine Species (Pinus sylvestris L. and Pinus nigra Arn.) Introduced on Reclaimed Sandy Soils
afforestation mine sites alien species SOM DOC extractable carbon nitrogen
2023/12/6
The roles of different tree species and their impacts are key in assessing the dynamics of soil restoration in afforested post-mining sites. The objective of this study was to compare the effect of Sc...
Elephants reverse the cattle-caused depletion of soil carbon and nutrient pools（图）
Elephant cattle-cause soil carbon nutrient pools
2020/4/10
Wild herbivore populations are declining in many African savannas, a result of replacement by livestock (mainly cattle) and the loss of large plant-eaters, or megaherbivores, such as elephants.Althoug...
Smart Contracts Make Bitcoin Mining Pools Vulnerable
Smart Contracts Bitcoin Mining Pools Vulnerable
2017/3/9
Despite their incentive structure flaws, mining pools account for more than 95% of Bitcoin's computation power. This paper introduces an attack against mining pools in which a malicious party pays poo...
Effects of dietary mixtures of amino acids on fetal growth and maternal and fetal amino acid pools in experimental maternal phenylketonuria
Phenylketonuria phenylalanine brain
2016/5/31
Branched-chain amino acids have been reported
to improve fetal brain development in a rat model in which
maternal phenylketonuria (PKU) is induced by the inclusion of
an inhibitor of phenylalanine ...
Carbon Dioxide Pools Discovered in Aegean Sea ’Kallisti Limnes’ Get Their Distinctive Color from Opal Particles
Carbon Dioxide Pools Aegean Sea Kallisti Limnes Distinctive Color Opal Particles
2015/8/4
The location of the second largest volcanic eruption in human history, the waters off Greece’s Santorini are the site of newly discovered opalescent pools forming at 250 meters depth. The interconnect...
Death in the tide pools:Rapid die-off of urchins and sea stars a grim warning of climate change（图）
Death in the tide pools urchins and sea stars climate change
2015/6/18
In August 2011, scientists at the UC Davis Bodega Marine Laboratory walked into their labs to a strange, disturbing sight: Thousands of purple sea urchins and other marine invertebrates were...
Salivary Parameters of Competitive Swimmers at Gas-Chlorinated Swimming-Pools
Salivary Parameters Competitive Swimmers Gas-Chlorinated Swimming-Pools
2015/5/14
Earlier reports have demonstrated that prolonged exposure to a gas-chlorinated swimming-pool was associated with enamel erosion, particularly in competitive swimmers (Centerwall et al., 1986). A few a...
Biomass and element pools of selected spruce trees in the catchments of Plešné and Čertovo Lakes in the Šumava Mts.
Norway spruce biomass element pools
2015/3/3
This paper presents detailed data on the biomass and element pools of six sample trees in the catchments
of Plešné and Čertovo Lakes. Diameters and heights of the sample trees ranged from ...
Permafrost-affected soils and their carbon pools with a focus on the Russian Arctic
Soil organic matter, swimming pool, the quaternary period, the climate system, cryosphere, arctic climate
2015/1/6
Permafrost-affected soils have accumulated enormous pools of organic matter during the Quaternary period. The area occupied by these soils amounts to more than 8.6 million km2, which is about 27% of a...
The relation between cryptographic key lengths and security depends on the cryptosystem used. This leads to confusion and to insecure parameter choices. In this note a universal security measure is pr...
Assessment of microbial pools by an innovative microbiological technique during the co-composting of olive mill by-products
Composting Olive Mill Wastewater Olive Pomace Pruning Residues
2013/3/4
Different mixtures of olive pomace (OP), olive mill wastewater (OMWW) and olive pruning residues (OPR) were aerobically co-composted under natural conditions. Compost temperature showed a sharp increa...
Systems with large flexible server pools: Instability of "natural" load balancing
Systems large flexible server pools Instability of "natural" load balancing
2011/2/22
We consider general large-scale service systems with multiple customer classes and multiple server (agent) pools; mean service times depend both on the customer class and server pool. It is assumed th...
Recovery Rates in investment-grade pools of credit assets: A large deviations analysis
Recovery Rates investment-grade pools credit assets
2010/10/20
We consider the effect of recovery rates on a pool of credit assets. We allow the recovery rate to depend on the defaults in a general way. Using the theory of large deviations, we study the structure...
Optimal split of orders across liquidity pools: a stochastic algorithm approach
Asset allocation Stochastic Lagrangian algorithm reinforcement principle monotone dynamic system
2010/11/2
Evolutions of the trading landscape lead to the capability to exchange the same financial
instrument on different venues. Because of liquidity issues, the trading firms split large orders across seve...