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Michela Barichella, Gianni Pezzoli, Samanta A Faierman, Benedetta Raspini, Martina Rimoldi, Erica Cassani, Simona Bertoli, Alberto Battezzati, Alessandro Leone, Laura Iorio, Valentina Ferri, Giovanna Pinelli, Chiara Pusani, Carlotta Bolliri, Roberto Cilia, Serena Caronni, Patrizia De Marco, Emanuele Cereda
In Zambia, chronic malnutrition still is one of the most common problem among children. To fight against malnutrition, the easiest short-term solution could be to combine specific types of food with affordable local plants. A large variety of natural food resources grow in Zambia, such as Moringa oleifera (MO), whose leaves are known for their health benefits, but are not consumed much by local populations. We analysed Zambian MO powder obtained from dried leaves and found that it contains large amounts of protein, minerals and vitamins, such as iron, calcium and carotenoids...
May 24, 2018: International Journal of Food Sciences and Nutrition
Ilya V Anoshkin, James Campion, Dmitry V Lyubchenko, Joachim Oberhammer
A novel technique for millimeter wave absorber material embedded in a metal waveguide is proposed. The absorber material is a highly-porous carbon nanotube (CNT) aerogel prepared by freeze-drying technique. CNT aerogel structures are shown to be a good absorber with a low reflection coefficient, less than -12 dB at 95 GHz. Reflection coefficient of the novel absorber is 3-4 times lower than that of commercial absorbers with identical geometry. Samples prepared by freeze-drying at -25 °C demonstrate resonance behavior while those prepared at liquid nitrogen temperature (-196 °C) exhibit a significant decrease in reflection coefficient, with no resonant behavior...
May 22, 2018: ACS Applied Materials & Interfaces
Kunjie Wang, Qingjuan Ji, Jialin Xu, Hongxia Li, Deyi Zhang, Xiaoyu Liu, Yujuan Wu, Haiyan Fan
In the present work, we synthesized the carbon quantum dots (CQDs) by one step hydrothermal method using the dried beet powder as the carbon source without additional chemical reagents and functionalization. The as-prepared CQDs are quasi-spherical carbon nanoparticles with diameters of 4-8 nm as well as surface functional groups such as carboxyl and hydroxyl groups, and exhibit good water-solubility, biocompatibility, and strong fluorescence. It is confirmed that amoxicillin (AMO) could enhance the fluorescent intensity of CQDs, the I/I 0 showed a linear correlation between the intensity of fluorescence and the concentration of AMO in a broad range...
May 19, 2018: Journal of Fluorescence
D Pang, T Yan, E Trevisi, S J Krizsan
This study compared the effects of a grain-based conventional concentrate (GC) and a concentrate based on agro-industrial by-products (BC), fed with grass silage harvested at early (ES) or late (LS) maturity stage, on dairy performance, CH4 and CO2 emissions, and metabolic status of dairy cows. Twenty lactating Nordic Red cows averaging 81 d in milk and 31.9 kg of milk/d pre-trial were assigned to a replicated 4 × 4 Latin square design. Dietary treatments were in a 2 × 2 factorial arrangement. The silages were harvested 2 wk apart from the same primary growth grass ley...
May 16, 2018: Journal of Dairy Science
Amir Mohammadi, Mehdi Mokhtari, Asghar Mosleh Arani, Hassan Taghipour, Yaghoub Hajizadeh, Hossein Fallahzadeh
In the northwest of Iran, the dust of salty and toxic metals possibly caused due to drying Urmia Lake is threatening the health of surrounding communities. This study aimed to employ leaves of local deciduous trees for biomonitoring of toxic elements and to evaluate air pollution tolerance of the trees for greenbelt application. Sampling from leaves of four dominant tree species including Vitis vinifera, Juglans regia, Ulmus umbraculifera, and Popolus alba was carried out from gardens in two radial distances (5 and 10 km) around the Urmia Lake accounting for 16 sites...
May 16, 2018: Environmental Science and Pollution Research International
Huang Jin, Tang Chun-Lian, Tu Zu-Wu, Tang Li, Zhang Ke-Hui, Li Qian, Ye Jun
OBJECTIVE: To prepare freeze-drying control materials of IgG antibody against Schistosoma japonicum for detection kits. METHODS: The serum samples of schistosomiasis patients from endemic areas and normal people without history of schistosome infection or contact with infested water in Hubei Province were collected. All the sera were detected by the method approved by China Food and Drug Administration and selected for preparation of quality control samples. RESULTS: Totally twelve positive quality control materials, ten negative quality control materials, and one sensitive and one precision quality control materials were screened...
April 18, 2018: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
Zuocheng Dai, Yan Huang, Huan Yang, Pingping Yao, Yuxiang Yang, Chaoying Ni
Magnetic fluids (MFs) with good dispersion were prepared by speed-controlled co-precipitation method, using polyethylene glycol (PEG-4000) as dispersing agent. To functionalize the MFs with graphene oxide (GO), highly dispersed nano-magnetic particles (NMPs) were firstly prepared by low-temperature freeze-drying technique. 3-aminopropyltriethoxysilane (APTES) was then attached on the surface of NMPs to form amino functionalized NMPs. GO was finally assembled with amino functionalized NMPs, to prepare GO functionalized MFs (GO-NMPs) by electrostatic adsorption...
January 1, 2018: Journal of Nanoscience and Nanotechnology
Mikhail E Minyaev, Alexander N Tavtorkin, Sof'ya A Korchagina, Ilya E Nifant'ev, Andrei V Churakov
The title complex, [Lu2 (C17 H28 O4 P)6 ]·2C7 H16 , was formed in the reaction between potassium 2,6-di- tert -butyl-4-methyl-phenyl ethyl phosphate, [K(2,6- t Bu2 -4-MeC6 H2 -O)(EtO)PO2 ], and LuCl3 (H2 O)6 in water, followed by vacuum drying and recrystallization from heptane. Its crystal structure has triclinic ( P [Formula: see text]) symmetry at 120 K. The lutetium tris-(phosphate) complex has a binuclear [Lu2 (μ-OPO)4 ] core and the organophosphate ligand exhibits κ2 O , O ' terminal and μ2 -κ1 O :κ1 O ' bridging coordination modes with the LuIII ion being sixfold coordinated...
April 1, 2018: Acta Crystallographica. Section E, Crystallographic Communications
Sheng Li, Ming Zhu, Weiqiang Yang, Mingjin Tang, Xueliang Huang, Yuegang Yu, Hua Fang, Xu Yu, Qingqing Yu, Xiaoxin Fu, Wei Song, Yanli Zhang, Xinhui Bi, Xinming Wang
Carbonaceous aerosols represent an important nexus between air pollution and climate change. Here we collected filter-based PM2.5 samples during summer and autumn in 2015 at one urban and two rural sites in Guangzhou, a megacity in southern China, and got the light absorption by black carbon (BC) and brown carbon (BrC) resolved with a DRI Model 2015 multi-wavelength thermal/optical carbon analyzer apart from determining the organic carbon (OC) and elemental carbon (EC) contents. On average BrC contributed 12-15% of the measured absorption at 405nm (LA405 ) during summer and 15-19% during autumn with significant increase in the LA405 by BrC at the rural sites...
August 15, 2018: Science of the Total Environment
Sven F Plappert, Sakeena Quraishi, Nicole Pircher, Kirsi S Mikkonen, Stefan Veigel, Karl Michael Klinger, Antje Potthast, Thomas Rosenau, Falk W Liebner
2,3-Dialdehyde cellulose (DAC) of a high degree of oxidation (92% relative to AGU units) prepared by oxidation of microcrystalline cellulose with sodium periodate (48 °C, 19 hours) is soluble in hot water. Solution casting, slow air drying, hot pressing and reinforcement by cellulose nanocrystals afforded films (~100 µm thickness) that feature intriguing properties: they have very smooth surfaces (SEM), are highly flexible and have good light transmittance for both the visible and near-infrared range (89-91%), high tensile strength (81-122 MPa) and modulus of elasticity (3...
May 14, 2018: Biomacromolecules
Silvia Sans, Joan Ferré, Ricard Boqué, José Sabaté, Joan Casals, Joan Simó
'Calçots', the immature floral stems of second-year onion resprouts, are an economically important traditional crop in Catalonia (Spain). Classical approaches to evaluating the chemical properties of 'calçots' are time consuming and expensive; near-infrared spectroscopy (NIRS) may be faster and cheaper. We used NIRS to develop partial least square (PLS) models to predict dry matter, soluble solid content, titratable acidity, and ash content in cooked 'calçots'. To guarantee the robustness of the models, calibration samples were grown and analyzed in a first season (2014-15) and validation samples in a second season (2015-16)...
October 1, 2018: Food Chemistry
Chun-Yue Huang, Dan-Wei Ouyang, Li-Xin Niu, Jing Zhou, Shan Lin, Xiao Hu
The study is to establish the two-dimension HPLC fingerprints of Dihuang (Rehmannia glutinosa), by HPLC-PDA and HPLC-ELSD methods. The separations were performed on Waters Atlantis®T3(4.6 mm× 250 mm,5 μm)and Welch Ultimate®Hilic-NH₂(4.6 mm× 250 mm,5 μm)columns with the gradient elution of acetonitrile-0.01% phosphoric acid and acetonitrile-water, respectively. The chromatographic display wavelength for PDA detector was set at 203 nm. For HPLC-ELSD, the nebulizer was set as cooling mode, the drift tube temperature was set at 60 °C and the gas pressure was 35...
April 2018: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
Md Abdul Aziz, Rakan Almadi, Zain Hassan Yamani
An electrochemical sensor based on an indium tin oxide nanoparticle (ITONP)-modified glassy carbon electrode (ITONP/GCE) was developed for the detection of sulfides in alcoholic medium. The ITONP/GCE was prepared by simply dropping the aqueous solution of ITONP on the GCE surface and then drying at 40°C. The homogeneous distribution of ITONP on the GCE surfaces was confirmed by recording the camera photographs and field emission scanning electron microscopic images. The ITONP/GCE was further characterized with energy dispersive X-ray spectrometry, X-ray photoelectron spectroscopy and X-ray diffractometry to identify the surface chemical composition and crystallinity...
2018: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
Yan Ma, Xingzhuang Wu, Qi Zhang, Vigna Giovanni, Xianjun Meng
Vacuum freeze-drying technology is a high technology content, a wide range of knowledge of technology in the field of drying technology is involved, it is also a method of the most complex drying equipment, the largest energy consumption, the highest cost of drying method, but due to the particularity of its dry goods: the freeze-drying food has the advantages of complex water performance is good, cooler and luster of freezing and drying food to maintain good products, less nutrient loss, light weight, easy to carry transportation, easy to long-term preservation, and on the quality is far superior to the obvious advantages of other dried food, making it become the forefront of drying technology research and development...
May 2018: Saudi Journal of Biological Sciences
Arnaud Lesaine, Daniel Bonamy, Georges Gauthier, Cindy L Rountree, Véronique Lazarus
Layers obtained by drying a colloidal dispersion of silica spheres are found to be a good benchmark to test the elastic behaviour of porous media, in the challenging case of high porosities and nano-sized microstructures. Classically used for these systems, Kendall's approach explicitly considers the effect of surface adhesive forces onto the contact area between the particles. This approach provides the Young's modulus using a single adjustable parameter (the adhesion energy) but provides no further information on the tensorial nature and possible anisotropy of elasticity...
May 8, 2018: Soft Matter
Helena Medina Cruz, Juliana Custódio Miguel Cruz, Elisangela Ferreira Da Silva, Moyra Machado Portilho, Vanessa Alves Marques, Lia Laura Lewis-Ximenez, Elisabeth Lampe, Livia Melo Villar
Dried blood spots (DBSs) could be an alternative to serum for hepatitis B virus (HBV) and hepatitis C virus (HCV) diagnosis. This study aims to evaluate two enzyme immunoassays (EIAs) for HBsAg and anti-HCV detection using DBS. Serum was tested using commercial EIA. DBS was tested using optimized EIA developed for serum and commercial EIA developed for DBS (Imunoscreen). Concordances between DBS and serum samples for both markers and EIAs were higher than 97%. Both EIAs demonstrated good performance for HBsAg and anti-HCV detection using DBS, and these methods could be used unchangeably increasing the access for HBV and HCV diagnosis...
May 7, 2018: Journal of Immunoassay & Immunochemistry
Marcela Brito Oliveira, Jessica Bassi da Silva, Maiara Camotti Montanha, Elza Kimura, Andrea Diniz, Marcos Luciano Bruschi
BACKGROUND: Bladder cancer is the second type of malignant carcinoma of the urinary tract. The treatment is time-consuming and requires maintenance doses of the drug for long periods of time with important side effects. Curcumin has shown evident clinical advances in the treatment of cancer. The technology of microencapsulation and the use of mucoadhesive materials can contribute to modify the delivery and improve the bioavailability of curcumin. OBJECTIVE: The aim of this study was to design and characterize mucoadhesive microparticles containing curcumin using multivariate analysis and the spray-drying technique...
May 3, 2018: Current Drug Delivery
Jae Won Jeong, Gyounglyul Jo, Solip Choi, Yoong Ahm Kim, Hyeonseok Yoon, Sang-Wan Ryu, Jaehan Jung, Mincheol Chang
Charge transport in conjugated polymer films involves  interactions within or between polymer chains. Here, we demonstrate a facile solution processing strategy that provides enhanced intra- and interchain  interactions of the resultant polymer films using a good solvent additive with low volatility. These increased interactions result in enhanced charge transport properties. The effect of the good solvent additive on the intra- and intermolecular interactions, morphologies, and charge transport properties of poly(3-hexylthiophene) (P3HT) films is systematically investigated...
May 4, 2018: ACS Applied Materials & Interfaces
Jinhui Li, Koji Inukai, Yosuke Takahashi, Akihiro Tsuruta, Woosuck Shin
Thin BaTiO₃ (BT) coating layers are required in various multilayer ceramic technologies, and fine nanosized BT particles with good dispersion in solution are essential for this coating process. In this work, cubic and tetragonal phase monodispersed BT nanoparticles—which were referred to as LBT and HBT-PVP coated on their surface by polyvinylpyrrolidone (PVP) polymer—were prepared by low temperature synthesis (LTS) and hydrothermal method (HT) at 80 and 230 °C, respectively. They were applied for the thin film coating on polyethylene terephthalate (PET) and Si wafer substrates by a simple bar coating...
May 1, 2018: Materials
Sarah R B King, Kathryn A Schoenecker, Jennifer A Fike, Sara J Oyler-McCance
Fecal DNA collected noninvasively can provide valuable information about genetic and ecological characteristics. This approach has rarely been used for equids, despite the need for conservation of endangered species and management of abundant feral populations. We examined factors affecting the efficacy of using equid fecal samples for conservation genetics. First, we evaluated two fecal collection methods (paper bag vs. ethanol). Then, we investigated how time since deposition and month of collection impacted microsatellite amplification success and genotyping errors...
April 2018: Ecology and Evolution
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