Results 21 to 30 of about 135,907 (264)

Inter-Laboratory Comparison of RT-PCR-Based Methods for the Detection of Tomato Brown Rugose Fruit Virus on Tomato

open access: yesPathogens, 2022
In 2020, a test performance study (TPS) for the specific detection of tomato brown rugose fruit virus (ToBRFV) was organized in the frame of the H2020 Valitest project. Since no validated tests were available, all the protocols reported in the literature
Marta Luigi   +7 more
doaj   +1 more source

Using Milk Urea Nitrogen to Evaluate Diet Formulation and Environmental Impact on Dairy Farms

open access: yesThe Scientific World Journal, 2001
Reducing nitrogen (N) excretion by dairy cattle is the most effective means to reduce N losses (runoff, volatilization, and leaching) from dairy farms.
J.S. Jonker, R.A. Kohn
doaj   +1 more source

Effects of Biochar on the Growth and Development of Tomato Seedlings and on the Response of Tomato Plants to the Infection of Systemic Viral Agents

open access: yesFrontiers in Microbiology, 2022
Biochar is a rich carbon product obtained by pyrolysis of biomass under a limited supply of oxygen. It is composed mainly of aromatic molecules, but its agronomic value is hard to evaluate and difficult to predict due to its great variable ...
Marta Luigi   +11 more
doaj   +1 more source

IMPACT OF AGRICULTURAL MANAGEMENT ON COMMUNITIES OF ORIBATIDA, GAMASINA AND COLLEMBOLA IN ITALIAN AND FRENCH VINEYARDS

open access: yesEQA, 2018
Quantitative and qualitative analyses among the soil microarthropods can be used in biomonitoring as tools in multi-disciplinary approach to characterize soil quality.
Sauro Simoni   +6 more
doaj   +1 more source

A Local Protection and Local Action Strategy of DC Grid Fault Protection

open access: yesEnergies, 2020
Fast detection and isolation of direct current (DC) faults are key issues for DC grids. Therefore, it is very necessary to study the fault protection principle for DC grids. This paper firstly presents the main difficulties in DC fault protection.
Jingqiu Yu, Zheren Zhang, Zheng Xu
doaj   +1 more source

Ordinal dose-response modeling approach for the phthalate syndrome

open access: yesEnvironment International, 2020
Background: The phthalate syndrome (PS) is a collection of related male reproductive developmental effects, ranging in severity, that have been observed in rats after gestational exposure to developmentally-toxic phthalates. For statistical purposes, the
Todd D. Blessinger   +6 more
doaj   +1 more source

An optimal protection scheme for spatially distributed UHVDC transmission systems

open access: yesZhejiang dianli
Spatially distributed UHVDC transmission systems eliminate the need for AC transmission lines converging at a converter station by enabling DC power transmission at remote locations.
HU Yunpeng   +5 more
doaj   +1 more source

Over Current Protection for PFM Control DC-DC Converter

open access: yesIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2009
An over current protection method suitable for Fixed ON-time PFM (Pulse Frequency Modulation) Control DC-DC converters is proposed. It is based on inductor bottom current limiting, realized by monitoring the synchronous rectifier current and extending the OFF-phase of the main switch until it decreases to a predetermined limit, and can properly limit ...
YAMADA, Kouhei   +2 more
openaire   +1 more source

Overcurrent Protection Control Design for DC-DC Buck Converter With Disturbances [PDF]

open access: yesIEEE Access, 2019
This paper deals with the output voltage regulation problem for dc-dc buck converters. Overcurrent protection and disturbances are both taken into consideration. The main challenge of control design is how to ensure that the current constraints are not violated at any time in the presence of disturbances.
Tian Liang Guo   +2 more
openaire   +2 more sources

Peace, Prosperity and Safety Nets in Timor‐Leste: Competing Priorities or Complementary Investments?

open access: yesAsia & the Pacific Policy Studies, 2014
Social protection cash transfers are a vital policy instrument in tackling poverty, and provide an affordable, broad‐based foundation for inclusive growth and social stability.
Pamela Dale   +2 more
doaj   +1 more source

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