Results 11 to 20 of about 17,351 (228)
Agriculture, 2022 Long-term phosphorus (P) accumulation in agricultural soils presents a challenge for water quality improvement. P is commonly elevated in soils managed for intensive livestock production due to repeated overapplication of slurry and fertilisers.
Emma Hayes +3 more
doaj +1 more source
Morphoecological characteristics of grasses used to restore degraded semi‐arid African rangelands
Ecological Solutions and Evidence, 2021 Progressive loss of productivity and plant diversity is a concern in global rangelands. In African rangelands, this process is partly attributed to heavy and uncontrolled grazing by livestock and wildlife, leading to land degradation.
Kevin Z. Mganga +8 more
doaj +1 more source
The challenges of rehabilitating denuded patches of a semi-arid environment in Kenya [PDF]
, 2010 Land degradation is a major problem in the semi-arid environments of Sub-Saharan Africa. Fighting land degradation is essential to ensure the sustainable and long-term productivity of the habited semiarid lands.
Clavel, D. +10 more
core +7 more sources
Land, 2023 Grassland resources occupy an important place in the national economy. However, grasslands in alpine regions of China are severely degraded, and the effects of land-use types on species composition, soil nutrients, and ecosystem multifunctionality of ...
Hongye Su +12 more
doaj +1 more source
Agriculture, 2022 This paper aims to solve the problem of high reseeding rates and mis-seeding rates in the rice multi-grain hole direct seeding process. A multi grain cluster air suction type rice hill direct seed metering device was developed, and its seeding mechanism ...
Han Tang +7 more
doaj +1 more source
Grassland management practices in Chinese steppes impact productivity, diversity and the relationship [PDF]
Frontiers of Agricultural Science and Engineering, 2018 Grasslands are crucial parts of the terrestrial ecosystem, with an extremely high differentiation of productivity and diversity across spatial scales and land use patterns.
Yingjun ZHANG, Wenjie LU, Hao ZHANG, Jiqiong ZHOU, Yue SHEN
doaj +1 more source
Manipulating Tournaments in Cup and Round Robin Competitions [PDF]
, 2009 In sports competitions, teams can manipulate the result by, for instance, throwing games. We show that we can decide how to manipulate round robin and cup competitions, two of the most popular types of sporting competitions in polynomial time.
D. Gusfield +4 more
core +2 more sources
induction in oil palm Elaeis guineensis for renewal (Arecales: Arecaceae) through herbicide mixtures
Cuadernos de investigación UNED, 2016 Oil palm, Elaeis guineensis Jacq, is one of the crops with the greater development and expansion at the commercial level, thanks to its high productivity of oilseed and low maintenance costs.
Gabriel Garbanzo León
doaj +1 more source
On-the-Fly Reseeding: A New Reseeding Technique for Test-Per-Clock BIST
Journal of Electronic Testing, 2002 In this paper we present a new reseeding technique for test-per-clock test pattern generation suitable for at-speed testing of circuits with random-pattern resistant faults. Our technique eliminates the need of a ROM for storing the seeds since the reseeding is performed on-the-fly by inverting the logic value of some of the bits of the next state of ...
Kalligeros, E. +3 more
openaire +2 more sources
Optimal Seedings in Elimination Tournaments [PDF]
, 2003 We study an elimination tournament with heterogenous contestants whose ability is common-knowledge. Each pair-wise match is modeled as an all-pay auction where the winner gets the right to compete at the next round.
Groh, Christian +3 more
core +6 more sources