Abstracts     

R. A. Reiners  J. G. Endres  J. Iavicoli  K. Kitsuta  F. A. Kummerow  Gladys Macy  E. G. Perkins  T. H. Smouse  J. A. Thompson  R. W. Walker 《Journal of the American Oil Chemists' Society》1968,45(10):604A-613A

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Abstracts     

R. A. Reiners  R. B. Aguilar  J. G. Endres  Kazuo Fukuzumi  J. Iavicoli  K. Kitsuta  F. A. Kummerow  Gladys Macy  Louise R. Morrow  E. G. Perkins  T. H. Smouse  J. A. Thompson 《Journal of the American Oil Chemists' Society》1966,43(11):502A-542A

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Scheduling parallel jobs on multicore clusters using CPU oversubscription     

Gladys Utrera  Julita Corbalan  Jesús Labarta 《The Journal of supercomputing》2014,68(3):1113-1140

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Alvaro Montoya‐Rodríguez  Elvira González de Mejía  Vermont P. Dia  Cuauhtémoc Reyes‐Moreno  Jorge Milán‐Carrillo 《Molecular nutrition & food research》2014,58(5):1028-1041

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Enrique Mejías  Gloria Montenegro 《Journal of food quality》2012,35(5):315-322

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Gordillo-Delgado F  Marín E  Cortés-Hernández DM  Mejía-Morales C  García-Salcedo AJ 《Journal of the science of food and agriculture》2012,92(11):2316-2319

BACKGROUND: Procedures for the evaluation of the origin and quality of ground and roasted coffee are constantly needed for the associated industry due to complexity of the related market. Conventional Fourier transform infrared (FTIR) spectroscopy can be used for detecting changes in functional groups of compounds, such as coffee. However, dispersion, reflection and non‐homogeneity of the sample matrix can cause problems resulting in low spectral quality. On the other hand, sample preparation frequently takes place in a destructive way. To overcome these difficulties, in this work a photoacoustic cell has been adapted as a detector in a FTIR spectrophotometer to perform a study of roasted and ground coffee from three varieties of Coffea arabica grown by organic and conventional methods. RESULTS: Comparison between spectra of coffee recorded by FTIR‐photoacoustic spectrometry (PAS) and by FTIR spectrophotometry showed a better resolution of the former method, which, aided by principal components analysis, allowed the identification of some absorption bands that allow the discrimination between organic and conventional coffee. CONCLUSION: The results obtained provide information about the spectral behavior of coffee powder which can be useful for establishing discrimination criteria. It has been demonstrated that FTIR‐PAS can be a useful experimental tool for the characterization of coffee. Copyright © 2012 Society of Chemical Industry  相似文献   

    

María Jesús Cejudo‐Bastante  M. Carmen Rodríguez Dodero  Enrique Durán Guerrero  Remedios Castro Mejías  Ramón Natera Marín  Carmelo García Barroso 《Journal of the science of food and agriculture》2013,93(4):741-748

BACKGROUND: Despite the long history of sherry wine vinegar, new alternatives of consumption are being developed, with the aim of diversifying its market. Several new acetic‐based fruit juices have been developed by optimising the amount of sherry wine vinegar added to different fruit juices: apple, peach, orange and pineapple. Once the concentrations of wine vinegar were optimised by an expert panel, the aforementioned new acetic fruit juices were tasted by 86 consumers. Three different aspects were taken into account: habits of consumption of vinegar and fruit juices, gender and age. RESULTS: Based on the sensory analysis, 50 g kg^?1 of wine vinegar was the optimal and preferred amount of wine vinegar added to the apple, orange and peach juices, whereas 10 g kg^?1 was the favourite for the pineapple fruit. Based on the olfactory and gustatory impression, and ‘purchase intent’, the acetic beverages made from peach and pineapple juices were the most appreciated, followed by apple juice, while those obtained from orange juice were the least preferred by consumers. CONCLUSION: New opportunities for diversification of the oenological market could be possible as a result of the development of this type of new product which can be easily developed by any vinegar or fruit juice maker company. © 2012 Society of Chemical Industry  相似文献   

    

Gladys Belle  Annabel Fossey  Leana Esterhuizen 《Water and Environment Journal》2020,34(1):93-105

The Bloemspruit in the Free State, South Africa, is being polluted by increasing anthropogenic activities alongside the stream. Water quality, macro‐invertebrate diversity and macro‐invertebrate habitats were studied to determine the extent of pollution. Pollution condition was quantified by calculating several indicators. The study revealed that Bloemspruit is highly polluted for the majority of the sampling sites. Two sites had fair water quality, while the water quality at the other sites was either marginal or poor. SASS 5 scores revealed that most macro‐invertebrate families present were pollution tolerant, indicating the poor state of the water. According to the modified IHAS (mIHAS) scores, macro‐invertebrate habitats at two sites were fair, seven adequate/fair and two poor. The relatively low values of the IHI scores confirm that the majority of the sites were affected by human activities. One site was classified as being largely modified because of the degrading effect of a wastewater treatment plant (WWTP) nearby.  相似文献   

    

Lin Dong  Xiaomin Han  Zhe Xu  Andrew B. Closson  Yin Liu  Chunsheng Wen  Xi Liu  Gladys Patricia Escobar  Meagan Oglesby  Marc Feldman  Zi Chen  John X. J. Zhang 《Advanced Materials Technologies》2019,4(1)

Self‐sustainable energy generation represents a new frontier to greatly extend the lifetime and effectiveness of implantable biomedical devices, such as cardiac pacemakers and defibrillators. However, there is a lack of promising technologies which can efficiently convert the mechanical energy of the beating heart to electrical energy with minimal risk of interfering with the cardiovascular functions. Here a unique design is presented based on existing pacemaker leads tailored for compact energy harvesting. This new design incorporates flexible porous polyvinylidene fluoride‐trifluoroethylene thin film within a dual‐cantilever structure, which wraps around the pacemaker lead with two free ends sticking out for harvesting energy from the heart's motion. Under various anchor methods of the lead, the maximum electrical output yields 0.5 V and 43 nA under the frequency of 1 Hz. It is found that adding a proof mass of 31.6 mg on the dual‐cantilever tip results in a 1.82 times power enhancement. The scalability of the design is also demonstrated, e.g., by connecting two such units in parallel, their simultaneous vibration can together contribute to energy conversion. Collectively, this study implies that sufficient electrical energy can be converted from the kinetic energy of a pacemaker lead especially at low frequencies to sustain operations.  相似文献   

    

Lin Dong  Chunsheng Wen  Yin Liu  Zhe Xu  Andrew B. Closson  Xiaomin Han  Gladys Patricia Escobar  Meagan Oglesby  Marc Feldman  Zi Chen  John X. J. Zhang 《Advanced Materials Technologies》2019,4(1)

Self‐sustainable energy generation represents a new frontier to significantly extend the lifetime and effectiveness of implantable biomedical devices. In this work, a piezoelectric energy harvester design is employed to utilize the bending of the lead of a cardiac pacemaker or defibrillator for generating electrical energy with minimal risk of interfering with cardiovascular functions. The proposed energy harvester combines flexible porous polyvinylidene fluoride–trifluoroethylene thin film with a buckled beam array design for potentially harvesting energy from cardiac motion. Systematic in vitro experimental evaluations are performed by considering complex parameters in practical implementations. Under various mechanical inputs and boundary conditions, the maximum electrical output of this energy harvester yields an open circuit voltage (peak to peak) of 4.5 V and a short circuit current (peak to peak) of 200 nA, and that energy is sufficient to self‐power a typical pacemaker for 1 d. A peak power output of 49 nW is delivered at an optimal resistor load of 50 MΩ. The scalability of the design is also discussed, and the reported results demonstrate the energy harvester's capability of providing significant electrical energy directly from the motions of pacemaker leads, suggesting a paradigm for biomedical energy harvesting in vivo.  相似文献