Results 21 to 30 of about 589,043 (382)

Honey Bee Exposure to Pesticides: A Four-Year Nationwide Study

open access: yesInsects, 2019
Pollinators, including honey bees, are responsible for the successful reproduction of more than 87% of flowering plant species: they are thus vital to ecosystem health and agricultural services world-wide. To investigate honey bee exposure to pesticides,
Nancy Ostiguy   +6 more
doaj   +1 more source

Preliminary study on the effect of milling technology on the key components of rice bran

open access: yesLiang you shipin ke-ji, 2020
To improve the utilization level of rice bran, it is very important to study the accurate separation of key components in rice bran. In this paper, the influence of grinding wheel type, grinding speed and grinding time on the contents of key components ...
YANG Kai-zhou   +6 more
doaj   +1 more source

Translocation of Tebuconazole between Bee Matrices and Its Potential Threat on Honey Bee (Apis mellifera Linnaeus) Queens

open access: yesInsects, 2021
Various pesticide residues can be found in different bee colony components. The queen larvae of honey bee (Apis mellifera L.) receive non-contaminated food from nurse bees. However, there is little knowledge about how pesticide residues affect developing
Risto Raimets   +5 more
doaj   +1 more source

The co-pyrolysis of flame retarded high impact polystyrene and polyolefins [PDF]

open access: yes, 2007
The co-pyrolysis of brominated high impact polystyrene (Br-HIPS) with polyolefins using a fixed bed reactor has been investigated, in particular, the effect that different types brominated aryl compounds and antimony trioxide have on the pyrolysis ...
Bhaskar, T.   +5 more
core   +1 more source

Oil Sludge Deposition in Storage Tanks: A Case Study for Russian Crude Oil in Mo-he Station

open access: yesApplied Sciences, 2020
The oil tank can form a considerable amount of sludge deposition after continuous accumulation, which cause a seriously negative impact on both the storage capacity and the safe operation of the oil tank. Therefore, it is important to anticipate the rate
Huayu Jiang   +5 more
doaj   +1 more source

Genome-Wide Identification and Expression Analysis of the KCS Gene Family in Yellow Horn Reveal Their Putative Function on Abiotic Stress Responses and Wax Accumulation

open access: yesHorticulturae, 2022
The β-ketoacyl CoA synthase encoded by the KCS genes is a rate-limiting enzyme for the synthesis of very-long-chain fatty acid (VLCFA), which catalyzes the VLCFA elongation.
Xiaojuan Liu   +5 more
doaj   +1 more source

Chemical and Sensory Characterization of Nine Spanish Monovarietal Olive Oils: An Emphasis on Wax Esters

open access: yesAgriculture, 2021
Olive oil is an essential part of the so-called “Mediterranean diet”, purportedly one of the healthiest gastronomic traditions in the world. The wax content in olive oil is regulated under European Union directives, and it is used as a purity parameter ...
Clara Diarte   +4 more
doaj   +1 more source

Determination the flow of experimental modeling waxes by using vicat apparatus [PDF]

open access: yesAl-Rafidain Dental Journal, 2011
Aim of the study: measuring the flow of new experimental modeling waxes. Materials and methods: preparation of one hundred twenty (120) samples of different experimental modeling waxes by mixing of different percentages of Iraqi natural waxes ( hard ...
Nadira A. Hatim   +2 more
doaj   +1 more source

Composites of polypropylene/Candelilla fiber (Euphorbia antisyphilitica): Synergic of wax-polypropylene grafted Maleic anhydride

open access: yesCogent Engineering, 2018
Previous studies of Candelilla bagasse fiber (CBF) have demonstrated the improvement of fiber-polymer adhesion; in the present investigation, the CBF was used to reinforce fiber of Polypropylene composites varying the amount of fiber (0, 20 and 30 wt ...
Marielli Elizabeth Ponce-Medina   +8 more
doaj   +1 more source

Weak anion-exchange hypercrosslinked sorbent in on-line solid-phase extraction-liquid chromatography coupling to achieve automated determination with an effective clean-up [PDF]

open access: yes, 2010
A mixed-mode polymeric sorbent was on-line coupled to liquid chromatography (LC) for the first time and applied it to the selective solid-phase extract a group of pharmaceuticals in complex environmental water samples. The mixed-mode polymeric sorbent is
Borrull, F.   +4 more
core   +1 more source

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