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Nadezhda Petkova, Ani Petrova, Ivan Ivanov, Ivanka Hambarlyiska, Yulian Tumbarski, Ivayla Dincheva, Manol Ognyanov and Petko Denev
This research aimed to reveal the chemical composition of different fractions obtained by sequential extraction of purple coneflower (Echinacea purpurea) roots and to evaluate the antimicrobial activity of some of them. Hexane, chloroform, ethyl acetate,...
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Yujia Chen, Wei Tan, Li Li and Hongbing Ji
It is a challenge to research and develop silicon surfactants with good acid and alkali stability. In the present paper, methylpropenyl polyether modified nonionic silicone surfactant (MPNTS), an alkali-resistant and hydrolysis-resistant silicone surfact...
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Evgeniya A. Bezrodnykh, Oxana V. Vyshivannaya, Boris B. Berezin, Inesa V. Blagodatskikh and Vladimir E. Tikhonov
Edible crayfish are an object of local fishing and artificial breeding in many countries. This industry is very promising in terms of production of healthy foods and byproducts, such as biologically active polyaminosaccharide?chitosan and its derivatives...
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Michele Pierigé, Francesca Nerli, Francesca Nardelli, Lucia Calucci, Mattia Cettolin, Luca Giannini, Marco Geppi and Francesca Martini
The tackifying effect of resins used in the tire industry highly depends on the compatibility and interaction strength with the rubber matrix. Here, uncured and cured styrene/butadiene rubber compounds, either in the presence or absence of a hydrocarbon ...
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Anna Wajs-Bonikowska, Lukasz Szoka, Pawel Kwiatkowski and Ewa Maciejczyk
Greek fir (Abies cephalonica) seeds and cone scales were used, for the first time, for an analysis of their biologically active volatile compounds. It was observed that the yield of seed essential oil was 18%, which, among plants, is impressive. The seed...
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Se Yun Jeong, Kwang Ho Lee, Jae Kwan Kim, Dohee Ahn, Hyemin Kim, Sang J. Chung, Sun-Young Yoon and Ki Hyun Kim
Ginkgo biloba L. (Ginkgoacea) contains an abundance of beneficial compounds and has demonstrated positive clinical effects in the management of metabolic syndrome. Recent studies have emphasized its efficacy against type 2 diabetes mellitus (T2DM), inclu...
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Kangning Liu, Sheliang Wang, Xiaoyi Quan, Jing Wu, Jin Xu, Nan Zhao and Bo Liu
In this study, iron ore tailings (IOTs) are used as aggregates to prepare iron-ore-tailing-engineered cementitious composites (IOT-ECCs) to achieve clean production. Some mechanical indexes, such as compressive strength (fcu), four-point flexural strengt...
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Abdulhakeem S. Alamri, Majid Alhomrani, Walaa F. Alsanie, Hussain Alyami, Sonam Shakya, Hamza Habeeballah, Osama Abdulaziz, Abdulwahab Alamri, Heba A. Alkhatabi, Raed I. Felimban, Abdulhameed Abdullah Alhabeeb, Moamen S. Refat and Ahmed Gaber
The drug barbital (Bar) has a strong sedative?hypnotic effect. The intermolecular charge transfer compounds associated with the chemical reactions between Bar and some p acceptors, such as 2,6-dibromoquinone-4-chloroimide (DBQ), tetracyanoquinodimethane ...
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Martijn Beljaars, Arjen J. Kamphuis, Hero J. Heeres, Antonius A. Broekhuis and Francesco Picchioni
A (partially) bio-based short-chain polyester is prepared through interfacial polycondensation of furan-functionalized diphenolic acid with terephthalic chloride. The furan groups along the backbone of the obtained polyester are able to form a covalent n...
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Fengjuan Dong, Zeyong Sun, Zhanwu Gao, Xuefei Lu, Yue Chen, Hai Huang and Dazhong Ren
Nanoscale pore-throat systems are widely developed in the pore-throat of tight reservoirs. The pore-throat structures of different microscales are complex and diverse with obvious microscale effects. Taking the Chang 63 tight sandstone reservoir of the H...
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