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Amir Muhammad, Wajid Ali, Iftikhar Ahmad, Mohammad Younas
Pág. 133 - 143
In this work extraction of copper (II) (Cu2+) from aqueous solution has been studied theoretically in commercially available hollow fiber membrane contactors (HFMCs) X-40 and X-50 modules from Liqui CelTM. Trifluoro-acetylacetone (TFA) has been used as e...
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Balázs Komjáti, Bianka Szokol, László Poppe, József Nagy
Pág. 243 - 246
The Chan-Lam-Evans coupling is the copper(II) acetate promoted reaction of phenols and boronic acids producing diaryl ethers. In this paper a modification of the original reaction is reported using copper(II) fluoride reagent which gives higher yields th...
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Jun Tan, Xiaoyan Wei, Yuxia Ouyang, Juhong Fan, Rui Liu
Pág. 131 - 139
Starch-grafted polyacrylamide (SA) and cross-linked starch-grafted polyacrylamide (CSA) had been synthesized via grafting polymerization from corn starch and used as adsorbents for the removal of Cu(II) ion from aqueous solution. The equilibrium, kinetic...
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Sugihhartati Dj Rachmawati, Chedly Tizaoui and Nidal Hilal
Removal of heavy metals, such as copper ions, from water is important to protect human health and the environment. In this study, manganese coated sand (MCS) was used as an adsorbent to remove copper ions in a batch system. Equilibrium data were determin...
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Kaida Dai, Han Liu, Pengwan Chen, Baoqiao Guo, Dalin Xiang and Jili Rong
Understanding the mechanical response and failure behaviors of thin plates under impact loading is helpful for the design and improvement of thin plate structures in practical applications. The response of a copper plate subjected to underwater impulsive...
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Cristina Lavinia Nistor, Catalin Ionut Mihaescu, Daniela Bala, Ioana Catalina Gifu, Claudia Mihaela Ninciuleanu, Sabina Georgiana Burlacu, Cristian Petcu, Mariana-Gratiela Vladu, Adi Ghebaur, Lenuta Stroea and Ludmila Otilia Cinteza
A simple and cost-efficient method to modify different surfaces in order to improve their bioactivity, corrosion and wear resistance proved to be sol-gel coatings. The silane layers have been shown to be effective in the protection of steel, aluminum or ...
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Alberto Federman Neto, Flávia Cristina Silva, Cíntia Arisse Esteves Dias, Nereu Daltin Júnior, Valter Vichnewski, João Batista Sargi Bonilha, Áurea Donizete Lanchote Borges (Author)
Pág. 1591 - 1598
A simplified and efficient assembly for the preparative photochemistry is described. The apparatus was tested in some classical organic photochemical reactions such as photobleaching of riboflavin, and photo reduction of the benzophenone, as well as in s...
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Siyu Yi, Md. Abul Kalam Azad, Yujiao Ji, Yang Liu, Mengying Dou and Xiangfeng Kong
Mao-tai lees (ML) is a by-product produced in the process of Mao-tai liquor production and contains high levels of crude protein, starch and fiber, and large yield. Thus, the ML has the potential to become feedstuffs alternatives in livestock production....
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Tsu-Ping Yu, Yung-Lung Lee, Ya-We Li and Shih-Wei Mao
With the continued development of 5G mobile communications technology, the implementation of high-power communication systems has become a key indicator of developed nations. Communication modules are also trending toward wide bandwidth and high-capacity...
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Izabela Michalak, Katarzyna Chojnacka and Daniel Korniewicz
In the present study, the effect of macroalga Enteromorpha sp. enriched with Zn(II) and Cu(II) ions on daily amounts of feces and urine excreted by growing pigs, apparent fecal nutrient digestibility and daily nitrogen balance and retention, meat quality...
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Kinga Juhász, Zoltán Hell
Pág. 636 - 639
The conjugate addition in the presence of a catalytic amount of copper is a widely used method for the formation of a C-C bond. However, mostly homogeneous catalysts and/or homogeneous ligands are used in these type of reactions. Previously we reported t...
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Ill-Min Chung, Govindasamy Rajakumar, Umadevi Subramanian, Baskar Venkidasamy and Muthu Thiruvengadam
Gymnema sylvestre is a plant that is enriched in bioactive compounds. In particular, gymnemic acids (GA) and phenolic compounds (PC) are pharmaceutically important. There is a commercial demand for naturally occurring bioactive compounds, but their avail...
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Péter Keglevich, László Hazai, György Kalaus, Csaba Szántay
Pág. 3 - 15
New derivatives of natural compounds, galanthamine using in treatment of Alzheimer?s disease and antitumor dimer alkaloids vinblastine and vincristine were synthesized. In the course of the reaction between galanthamine and diazomethane in the pres...
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Loránd Románszki, Miklós Mohos, Judit Telegdi, Zsófia Keresztes, Lajos Nyikos
Pág. 53 - 59
The goal of this work was to compare the performance of our home-built dynamic sessile drop contact angle (CA) goniometer with our NIMA Dynamic Surface Tensiometer. Water CA measurements on different alloy samples (aluminium brass, copper-nickel 70/30, s...
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Katarzyna Leszczynska-Sejda, Andrzej Chmielarz, Dorota Kopyto, Michal Ochmanski, Grzegorz Benke, Arkadiusz Palmowski, Agnieszka Sobianowska-Turek, Przemyslaw Los, Agnieszka Fornalczyk, Michal Zygmunt and Karolina Goc
This paper presents comparative experimental results for the single-stage and two-stage counter-current acid leaching of battery masses, with the addition of a booster, from different types of LIB waste. Three different types of battery masses were used ...
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Amélia P. Marinho-Reis, Cristiana Costa, Fernando Rocha, Mark Cave, Joanna Wragg, Teresa Valente, Amália Sequeira-Braga and Yves Noack
The main objectives of the present study were to (i) investigate the effects of mineralogy and solid-phase distribution on element bioaccessibility and (ii) perform a risk assessment to calculate the risks to human health via the ingestion pathway. Multi...
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Wojciech Kubissa, Roman Jaskulski, Damian Gil and Iwona Wilinska
The aim of the research is a comprehensive evaluation of concrete using the EIPI method. In the evaluation the compressive strength of concrete and its durability properties represented by sorptivity and air permeability are taken into account. Since was...
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Inna Trus,Nikolai Gomelya,Ganna Trokhymenko,Nataliya Magas,Olena Hlushko
Pág. 49 - 54
Development of reliable, environmentally safe and economically advantageous methods of water purification from heavy metals is the primary task for environmental protection. The effectiveness of sorption treatment and additional treatment of natural wate...
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Andriy Buketov, Mykola Brailo, Serhii Yakushchenko, Oleksandr Sapronov, Vasyl Vynar, ?leh Bezbakh, Roman Negrutsa
Pág. 171 - 182
The tribological properties of complex polymeric materials, which include epoxy and polyester resins, two hardeners and two microdispersed fillers: mica-muscovite, copper (II) oxide, were investigated in the work. The results of the testing of specimens ...
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Huijuan Tang, Zhixin Ke, Muting Yan, Wenjing Wang, Huayue Nie, Boxing Li, Jingping Zhang, Xiangrong Xu and Jun Wang
Surface sediment samples were collected from 19 sites throughout Daya Bay, China to study the concentrations, spatial distributions, potential ecological risk, and possible sources of heavy, including metals copper (Cu), zinc (Zn), arsenic (As), cadmium ...
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