Results 111 to 120 of about 5,556,354 (354)

Constituents of the Essential Oil of Suregada Zanzibariensis Leaves are Repellent to the Mosquito, Anopheles Gambiae s.s. [PDF]

, 2010
In traditional African communities, repellent volatiles from certain plants generated by direct burning or by thermal expulsion have played an important role in protecting households against vectors of malaria and other diseases.
Joseph, Cosam C, Hassanali, Ahmed, Gikonyo, Nicholas K, Nkunya, Mayunga H H, Mayunga H.H. Nkunya, Ahmed Hassanali, Nicholas K. Gikonyo, Cosam C. Joseph, Ester Innocent, Innocent, Ester   +9 more
core   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Yield and Composition of the Essential Oil of Basil on Plant Growth Regulators Application

, 2011
This study aimed at evaluating the effect of plant growth regulators on the yield and composition of the essential oil of basil (Ocimum basilicum L.).
Ono, E. O., Rodrigues, J. D. [UNESP], Barreiro, A. P., Marques, M. O. M., Ono, E. O. [UNESP], Barreiro, A. P. [UNESP], Rodrigues, J. D.   +6 more
core   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Comparison of hypericin content, antioxidant, antimicrobial and cytotoxic activities of Hypericum perforatum L. from three geographic regions of Iran

مجله دانشگاه علوم پزشکی گرگان, 2017
Background and Objective: Hypericin is found in different species of Hypericum genus, as a main compound with antimicrobial, antiviral, nonspecific kinas inhibition and dopamin β-hydroxilase inhibitoring effects.
M Akhbari, M Ebrahimian
doaj  

Effect of plant ontogeny on the phytochemical composition and antioxidant activity of Artemisia herba alba essential oil

International Journal of Minor Fruits, Medicinal and Aromatic Plants
Artemisia herba-alba is a medicinal and strongly aromatic plant widely used in traditional medicine by many cultures since ancient times. It is known that the quantitative chemical composition of plants and consequently their biological activities vary ...
Touil Souhila
doaj   +1 more source

Seasonal variations in essential oil from brazilian propolis

, 1998
Seasonal variations in the chemical composition of essential oil from Brazilian propolis were investigated using GC and GC/MS. Seasonal differences were not very significant and were predominantly quantitative.
Bankova, V., Sforcin, J. M. [UNESP], Boudourova-Krasteva, G., Funari, S. R. Cunha [UNESP], Popov, S.   +4 more
core   +1 more source

Sedative and hypnotic effects of compound Anshen essential oil inhalation for insomnia

BMC Complementary and Alternative Medicine, 2019
BackgroundsThe chemical composition of many essential oils indicates that they have sedative and hypnotic effects, but there is still a lack of systematic studies on the sedative and hypnotic effects of essential oils.
Yu Zhong, Qin Zheng, Peng-yi Hu, Xiaoying Huang, Ming Yang, Guilin Ren, Qing Du, Jun Luo, K. Zhang, Jing Li, Hai-di Wu, Yuanyuan Guo, Shan-shan Liu   +12 more
semanticscholar   +1 more source

Optimization of the Production of Rubber Compounds Using Mathematical Models

Advanced Engineering Materials, EarlyView.
Rubber compounds were mixed in a batch internal mixer, and symbolic regression was used to derive mathematical models linking recipe and process parameters to ram path, torque, and mixing quality (incorporation, dispersion, distribution). Subsequent optimization with evolutionary algorithms identified operating conditions that reduce specific energy ...
Anke Bardehle, Andreas Limper, Ulrich Giese, Carlos Lucke, Mario Beiner, Christoph Gögelein, Lisa Leuchtenberger‐Engel, Christian Hopmann   +7 more
wiley   +1 more source

Assessment of the efficiency of rape production in Ukraine

Agricultural and Resource Economics, 2019
Purpose. The purpose of the article is to analyze of the current state, to highlight problematic aspects and to assess the economic efficiency of rapeseed production in Ukraine. Methodology / approach.
Iryna Chekhova, Serhii Chekhov
doaj