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Diet-Based Strategies for Cancer Chemoprevention: The Role of Combination Regimens Using Dietary Bioactive Components

17-Apr-2015 | Christina DiMarco-Crook; Hang Xiao, Annual Review of Food Science and Technology, 2015

Chemopreventive agents that the general population can consume for prolonged periods of time with minimal risk of any side effects are of great interest to all in search of a solution to the pervasive incidence of cancer. Dietary bioactive components have been found to modulate many deregulated ...

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Amperometric Biosensor for Choline Based on Gold Screen‐Printed Electrode Modified with Electrochemically‐Deposited Silica Biocomposite

16-Apr-2015 | I. Mazurenko, O. Tananaiko, O. Biloivan, M. Zhybak, I. Pelyak, V. Zaitsev, M. Etienne, A. Walcarius, Electroanalysis, 2015

Abstract A mediator‐free choline biosensor was developed using the electrochemically assisted sol‐gel deposition on gold screen‐printed electrodes. The addition of 12 mM of cationic surfactant CTAB in silica sol allowed enhancing the stability of the sensor. The modified electrode demonstrated ...

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Mass spectrometric based approaches in urine metabolomics and biomarker discovery

16-Apr-2015 | Mona M. Khamis, Darryl J. Adamko, Anas El‐Aneed, Mass Spectrometry Reviews, 2015

Urine metabolomics has recently emerged as a prominent field for the discovery of non‐invasive biomarkers that can detect subtle metabolic discrepancies in response to a specific disease or therapeutic intervention. Urine, compared to other biofluids, is characterized by its ease of collection, ...

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Diverse application platform for hard X‐ray diffraction in SACLA (DAPHNIS): application to serial protein crystallography using an X‐ray free‐electron laser

16-Apr-2015 | Kensuke Tono, Eriko Nango, Michihiro Sugahara, Changyong Song, Jaehyun Park, Tomoyuki Tanaka, Rie Tanaka, Yasumasa J ..., Journal of Synchrotron Radiation, 2015

An experimental system for serial femtosecond crystallography using an X‐ray free‐electron laser (XFEL) has been developed. It basically consists of a sample chamber, fluid injectors and a two‐dimensional detector. The chamber and the injectors are operated under helium atmosphere at 1 atm. The ...

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Kinetics and equilibria of the chromatographic separation of maltose and trehalose

15-Apr-2015 | Dengjun He, Jiachun Zhou, Quanming Xia, Lihua Jiang, Yongjun Qiu, Liming Zhao, Journal of Separation Science, 2015

Trehalose, a non‐reducing disaccharide, has been extensively applied to food, cosmetics and pharmaceutical goods. The resultant solution of trehalose prepared by enzymatic methods includes high amounts of maltose. However, it is quite difficult to separate maltose and trehalose on an industrial ...

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Free‐radical polymerization of urea, acrylic acid, and glycerol in aqueous solutions

15-Apr-2015 | Bruno S. Fernandes, José Carlos Pinto, Elaine C.M. Cabral‐Albuquerque, Rosana L. Fialho, Polymer Engineering and Science, 2015

The main objective of the present study is to produce copolymers of urea, acrylic acid, and glycerol through aqueous solution free‐radical polymerizations and analyze the structural, thermal, rheological, and release properties of the obtained materials. To do this, aqueous solution ...

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Thermal versus Microwave Inactivation Kinetics of Lipase and Lipoxygenase from Wheat Germ

14-Apr-2015 | Bin Xu, Li Kun Wang, Wen Juan Miao, Qi Fei Wu, Yan Xia Liu, Yilin Sun, Chao Gao, Journal of Food Process Engineering, 2015

Abstract The inactivation kinetics of enzymes is an important way to reveal the mechanism of enzyme inactivation by microwaves. In this paper, lipase (LA) and lipoxygenase (LOX) were treated by both microwave irradiation and conventional heating. A temperature‐controlled water bath was used ...

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Membrane-Based Osmotic Heat Engine with Organic Solvent for Enhanced Power Generation from Low-Grade Heat

14-Apr-2015 | Evyatar Shaulsky; Chanhee Boo; Shihong Lin; Menachem Elimelech, Environmental Science & Technology, 2015

We present a hybrid osmotic heat engine (OHE) system that uses draw solutions with an organic solvent for enhanced thermal separation efficiency. The hybrid OHE system produces sustainable energy by combining pressure-retarded osmosis (PRO) as a power generation stage and membrane distillation ...

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Partially Oxidized Graphene/Metallic Single‐Walled Carbon Nanotubes Film‐Coated Electrode for Nanomolar Detection of Dopamine

13-Apr-2015 | Ashok K. Sundramoorthy, Sundaram Gunasekaran, Electroanalysis, 2015

Abstract Enriched metallic single‐walled carbon nanotubes (mSWCNTs) were dispersed in aqueous solution of partially oxidized graphene (po‐Gr). As‐prepared po‐Gr/mSWCNTs suspension was used to modify glassy carbon electrode (GCE) surface, which showed high electrocatalytic activity for dopamine ...

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A sample preparation method for recovering suppressed analyte ions in MALDI TOF MS

13-Apr-2015 | Xianwen Lou, Bas F. M. Waal, Lech‐Gustav Milroy, Joost L. J. Dongen, Journal of Mass Spectrometry, 2015

In matrix‐assisted laser desorption/ionization time‐of‐flight mass spectrometry (MALDI TOF MS), analyte signals can be substantially suppressed by other compounds in the sample. In this technical note, we describe a modified thin‐layer sample preparation method that significantly reduces the ...

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