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Tingting Cui, Jianbing Zhang and Weiqun Luo
There were some ecological and environmental problems in limestone soil in the karst peak-cluster depression in Pingguo City of Guangxi, such as the destruction of soil structure, soil acidification and soil fertility decline, and these problems were clo...
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Alexey Lupachev, Evgeny Abakumov and Stanislav Gubin
Soil organic matter (SOM) was studied in different types of organo-mineral material (from surface horizons and partially isolated materials?cryoturbated or buried horizons) sampled from the surface horizons, the central parts of the Cryosol profiles, and...
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Werner Marcelo Goldmann, Juha Ahola, Otto Mankinen, Anu M. Kantola, Sanna Komulainen, Ville-Veikko Telkki, Juha Tanskanen
Pág. 93 - 101
The amount of hydroxyl groups, particularly phenolic, is one of the most important parameters in lignins, as it is an indicator of lignin reactivity. Ultraviolet (UV) Spectrophotometry is a simple and inexpensive method for determining phenolic hydroxyls...
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Diego Pizzeghello, Ornella Francioso, Giuseppe Concheri, Adele Muscolo and Serenella Nardi
Soil carbon sequestration is strongly affected by soil properties, climate, and anthropogenic activities. Assessing these drivers is key to understanding the effect of land use on soil organic matter stabilization. We evaluated land use and soil depth in...
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Jörg Gerke
In the last three decades, the concept of soil humic substances has been questioned in two main directions. Misinterpretations of CP MAS13C NMR spectroscopy led to the conclusion that soil organic matter is mainly aliphatic, questioning the theory of pol...
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Irene Yukiko Kimura, Valfredo Tadeu Favere, Amarildo Otavio Martins, Viviane Aparecida Spinelli, Atche Josué (Author)
Pág. 1313 - 1317
Chitosan microspheres with average diameter 1.03 ± 0.06 mm and degree of deacetylation of 72.5% were employed as adsorbent for reactive dye black 5. Chitosan was characterized through infrared spectroscopy (IR), 13C NMR spectrum and deacetylation degree ...
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Perla Yolanda López-Camacho, Juan Carlos Martínez-Espinosa, Gustavo Basurto-Islas, Andrea Torres-Zarraga, José Martín Márquez-Villa, Mariana Macías-Alonso and Joaquin G. Marrero
Spondias mombin L. has been used in traditional medicine to treat some cases such as infections and inflammations. Some researchers have reported that its biological components, such as carotenoids, carotenes, and phenols, have been characterized primari...
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Tong Wang, Jianli Wang, Xianfeng He, Zhiyuan Cao, Dongdong Xu, Fei Gao, Jiang Zhong and Liang Shen
In this work a novel ambient curable coating was synthesized based on the Michael addition reaction of acetoacetylated castor oil and a multifunctional acrylate. In the research, we used hexamethylene diacrylate as crosslinker to optimize the reaction co...
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Djamal Eddine Kherroub, Mohammed Belbachir, Saad Lamouri, Larbi Bouhadjar, Karim Chikh
Pág. 195 - 201
In this study, a new and easy strategy was discussed for the purpose of synthesizing of a polymer of phenylmethylcyclosiloxane type (PPMS). The cationic ring opening polymerization of triphenyltrimethylcyclotrisiloxane (D3Ph,Me) was initiated by a solid,...
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Filipe Arruda, José S. Rosa, Ana Rodrigues, Luísa Oliveira, Ana Lima, José G. Barroso and Elisabete Lima
This study mainly deals with the effect of hydrodistillation (HD) and water-steam distillation (WSD) methods on the color, yield, and chemical profile of the essential oil (EO) from Cryptomeria japonica fresh leaves from São Miguel Island (Azores Archipe...
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Rishibha Dixit, Surendra Singh, Manoj Kumar Enamala and Alok Patel
The microalga Scenedesmus rotundus, isolated from Jabalpur, Madhya Pradesh, India was designated as Scenedesmus rotundus-MG910488 after morphological and molecular identification. In this study, the effects of various autotrophic growth media on the phys...
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Jingguo Yang, Yuhong Hu and Kuan Chang
Limonin is a natural compound which is rich in the fruit of various plants of the Rutaceae family and demonstrated to have a wide range of biological activities. In this work, seven limonin derivatives were successfully synthesized by hydrogenation of li...
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Jiangfei Lou, Jinfang Zhang, Dan Wang and Xuerong Fan
In the anti-wrinkle finishing of cotton fabrics, the decreased dyeability of the finished fabrics has always been a difficult problem. A new anti-wrinkle finishing mode was developed to solve this problem by changing the finishing sequence of fabric dyei...
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Vesna Rastija, Harshad Brahmbhatt, Maja Molnar, Melita Loncaric, Ivica Strelec, Mario Komar and Valentina Pavic
A series of fluorinated 4,5-dihydro-1H-pyrazole derivatives were synthesized in the reaction of corresponding acetophenone and different aldehydes followed by the second step synthesis of desired compounds from synthesized chalcone, hydrazine hydrate, an...
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Qusay A. Jawad, Dhafer S. Zinad, Rawaa Dawood Salim, Ahmed A Al-Amiery, Tayser Sumer Gaaz, Mohd S. Takriff and Abdul Amir H. Kadhum
Corrosion of a material by reaction with a corrosive environment is a common problem across many industries. Iraq is an oil country and corrosion represents a large portion of the total costs for oil producing and a natural potential hazard associated wi...
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Hua Jin and Wei Xu
Polysiloxanes, which can add high softness and lubricity to treated textiles, have been proposed as softening post-finishing agents for fabric. However, the hydrophobicity of the finished fabric is not satisfactory. In this work, long-chain fluoroalkyl a...
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K N Agel, E Abood, T Alsalim
Pág. 1 - 13
Introduction: Curcumin is a yellow pigment extracted from the Curcuma longa L, which have a several biological activities and pharmacological properties. Curcuminoids have a wide range as antioxidant not only in a food system, but also for biological sys...
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