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Monographs of essential oils that have caused contact allergy / allergic contact dermatitis
Published in Anton C. de Groot, Monographs in Contact Allergy, 2021
Cedrus atlantica is an evergreen coniferous tree which can grow up to 40 meter high and 2 meter in diameter. It is native to the Atlas Mountains in Morocco and Algeria. Atlas cedar is the principal species in Moroccan forests used for production of timber. It is also cultivated in southern France for this purpose. The machining waste, sawdust (estimated to be 8–30%) is the ground material for the production of Atlas cedarwood essential oil, which is used in the perfumery and flavor industry and for its medicinal properties, especially for their content of himachalenes. It is also used in aromatherapy (14).
Anatomy and differential diagnosis in head and neck surgery
Published in Neeraj Sethi, R. James A. England, Neil de Zoysa, Head, Neck and Thyroid Surgery, 2020
Occupational exposure can trigger suspicion of different diseases such as hard-wood workers and an association with sinonasal carcinoma [4]. Dust exposure (sawdust, leather and metal) has been found to be associated with an increased risk of larynx cancer [5].
Growing Ginseng Plant in China and the United States
Published in Joseph P. Hou, The Healing Power of Ginseng, 2019
Seeds ripen in the fall but generally do not germinate until the following fall. Do not allow ripe seeds to dry out. Store them in a cool, moist place. Use woodland soil, sand, loam, or sawdust as a storage medium.
Adsorption of water pollutants using H3PO4-activated lignocellulosic agricultural waste: a mini review
Published in Toxin Reviews, 2023
Lawal Sirajo, Muhammad Abbas Ahmad Zaini
Al Subhi et al. (2020) reported chemical treatment of date palm seed using H3PO4, HNO3 and H2SO4 for 24 h. The H3PO4-adsorbent stood out with a 95.7% removal of COD. The Chinese medicine waste was activated by H3PO4 at different impregnation ratios, temperatures, and retention times (Mi et al.2015). AC with specific surface of 920 m2/g was attained by impregnation ratio of 2:5 at 550 °C for 65 min. Also, Olorundare et al. (2014) described the effect of impregnation ratio on the porosity of AC from maize tassels. By varying the H3PO4 ratio from 1:1 to 1:5, the optimal surface was found as 1263 m2/g at ratio of 1:4, that yields a phenol removal of 345 mg/g. Zhang et al. (2008) investigated the effects of activation strategies on textural properties and performance of sawdust AC. The most significant parameter was found to be sawdust/H3PO4 ratio. AC with surface area of 1642 m2/g was produced under the optimum condition of 1:1.5 ratio at 500 °C for 90 min, that shows a removal of 250 mg/g methylene blue after 90 min. Juhaina et al. (2016) recognized a better performance of orange/lemon peel AC by H3PO4 than that by zinc chloride at the same mass ratio of 1:1.
Nutritional supplementation of gallic acid ameliorates Alzheimer-type hippocampal neurodegeneration and cognitive impairment induced by aluminum chloride exposure in adult Wistar rats
Published in Drug and Chemical Toxicology, 2022
B. Ogunlade, S. A. Adelakun, J. A. Agie
A total of 28 adult male Wistar rats (Rattus norvegicus) weighing between 180 and 220 g were purchased from the breeding colony, School of Agriculture and Agricultural Technology, Federal University of Technology, Akure. The rats were housed in the Laboratory Animal house, Department of Human Anatomy, Federal University of Technology, Akure. The rats were subjected to a suitable temperature of 32–37 °C, 24 h light supply, full aeration which was enhanced by wire gauzed cage properly partitioned into four chambers and roomy enough to allow for proper ventilation and free movement within it. The floor of the cage was lined with carpet pieces and sprayed with coarse saw dust which served as a cushion. The coarse saw dust was changed every day to dispose waste droppings and maintain proper hygiene. The rats were fed with growers marsh (pellets), purchased from a feed store- Agro feeds and flour mills, and water during the period of the experiment. The rats went through an acclimatization period of 7 days. The processes of protocols using the experimental animals were in accordance to the Guide for the Care and Use of Laboratory Animals and approved by the Health Research Ethics Committee of the College of Medicine, University of Lagos.
Enhanced toxic thallium (I) removal from water using novel AgNPs/sawdust nanocomposite
Published in Toxin Reviews, 2021
Fatemeh Sabermahani, Zahra Ganjehkaviri
In this article, a novel Nanocomposite AgNPs/SD was successfully prepared by green synthesis method and applied for removal of toxic Tl(I) ions. In the first, silver nanoparticles were synthesized using Buxus leaf extract as the reducing agent and then the nanocomposite prepared with incorporation sawdust. The SPR peaks revealed the Ag particles are nanoscale. Further, shape, the size, and morphology were examined with XRD and SEM. The functional groups present in nanocomposite were identified by FT-IR and finally the new sorbent was tested for removal of toxic Tl+ from aqueous mediums using batch mode experiments. The optimum adsorbent dosage was 0.1 g at pH = 7.5. The maximum sorption capacity calculated from Langmuir model was 26.11 mg/g. pseudo-second order model is best fitted to Tl+ adsorption. The endothermic nature of the adsorption was confirmed by thermodynamic studies. The main advantages of the proposed adsorbent are:Sawdust is easily available and low cost.Desorption is high using diluted acid (99.69%).The AgNPs/SD nanocomposite has high efficiency, rapid uptake, and easy re-usability.The employed synthesis technique is an environmentally friendly and green.