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https://www.readbyqxmd.com/read/29341589/metal-organic-frameworks-mofs-derived-hierarchical-co3o4-structures-as-efficient-sensing-materials-for-acetone-detection
#1
Rui Zhang, Tingting Zhou, Lili Wang, Tong Zhang
High sensitive and stable gas sensors have attracted much attention because they are the key to innovations in the fields of environment, health, energy savings and security, etc. Sensing materials, which influence the practical sensing performance, are the crucial parts for gas sensors. Metal-organic frameworks (MOFs) are considered as alluring sensing materials for gas sensors due to the possession of high specific surface area, unique morphology, abundant metal sites and functional linkers. Herein, four kinds of porous hierarchical Co3O4 structures have been selectively controlled by optimizing the thermal decomposition (temperature, rate and atmosphere) using ZIF-67 as precursor that was obtained from coprecipitation method with the co-assistant of cobalt salt and 2-methylimidazole in the solution of methanol...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29278653/physicochemical-thermal-and-sensory-properties-of-blue-corn-zea-mays-l
#2
Ceren Mutlu, Sultan Arslan-Tontul, Cihadiye Candal, Ozlem Kilic, Mustafa Erbas
The aim of this study was to investigate some physicochemical and sensory properties of blue corn cultivated in Turkey. The length and width of the cob with kernels, hectoliter, and 1000-kernel weight of blue corn were measured as 7.66, 2.02 mm, 84.40 kg/100 L, and 44.27 g, respectively. The gelatinization onset, peak, and end temperatures were measured as 61.12 °C, 64.35 °C, and 75.65 °C, respectively. The water activity, moisture content, total protein, lipid, and crude fiber contents of the blue corn sample were detected as 0...
December 26, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/29170248/memoirs-of-a-frequent-flier-phylogenomics-reveals-18-long-distance-dispersals-between-north-america-and-south-america-in-the-popcorn-flowers-amsinckiinae
#3
C Matt Guilliams, Kristen E Hasenstab-Lehman, Makenzie E Mabry, Michael G Simpson
PREMISE OF THE STUDY: American amphitropical disjunction (AAD) is an important but understudied New World biogeographic pattern in which related plants occur in extratropical North America and South America, but are absent in the intervening tropics. Subtribe Amsinckiinae (Boraginaceae) is one of the richest groups of plants displaying the AAD pattern. Here, we infer a time-calibrated molecular phylogeny of the group to evaluate the number, timing, and directionality of AAD events, which yields generalizable insights into the mechanism of AAD...
November 23, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/29169046/a-novel-ccm1-krit1-heterozygous-deletion-mutation-c-1919delt-in-a-chinese-family-with-familial-cerebral-cavernous-malformation
#4
Chenlong Yang, Bingquan Wu, Haohao Zhong, Yan Li, Xingzheng Zheng, Yulun Xu
BACKGROUND: Cerebral cavernous malformation (CCM) is a relatively rare congenital vascular anomaly in the central venous system. Its inherited form, familial cerebral cavernous malformation (FCCM), is an autosomal-dominant disease with incomplete penetrance. The pathogenic genes of FCCM have been mapped into three loci: CCM1/KRIT1, CCM2/MGC4607, and CCM3/PDCD10. Till now, the genetic basis of FCCM in the Chinese population has yet to be well understood. Herein, we investigated the genetic mutation in a Chinese family with FCCM...
November 20, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29127271/whole-grain-consumption-and-risk-of-ischemic-stroke-results-from-2-prospective-cohort-studies
#5
Juan Juan, Gang Liu, Walter C Willett, Frank B Hu, Kathryn M Rexrode, Qi Sun
BACKGROUND AND PURPOSE: Higher intake of whole grains may exert cardiometabolic benefits, although findings on stroke risk are inconclusive. The potentially differential effects of individual whole grain foods on ischemic stroke have not been examined. METHODS: We analyzed whole grain consumption in relation to ischemic stroke among 71 750 women from the Nurses' Health Study and 42 823 men from the Health Professionals Follow-up Study who were free of cardiovascular disease, diabetes mellitus, and cancer at baseline (1984 and 1986, respectively) through 2010 using a Cox proportional hazards model...
November 10, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28981142/relating-sensory-profiles-of-canned-amaranth-amaranthus-cruentus-cleome-cleome-gynandra-cowpea-vigna-unguiculata-and-swiss-chard-beta-vulgaris-leaves-to-consumer-acceptance
#6
Isiguzoro O Onyeoziri, Marise Kinnear, Henriëtta L de Kock
BACKGROUND: The younger generation of South Africans generally do not consume traditional meals prepared using African green leafy vegetables, primarily because they are regarded as bitter, "poverty" foods. Canning of these vegetables could create, value-added products that can be sold in the commercial market. Descriptive sensory evaluation and consumer acceptance testing with young females were used to assess the potential of such products. RESULTS: The sensory attributes of amaranth, cleome and cowpea leaves canned in brine and in a cream sauce were described using 21 attributes grouped by aroma, taste, texture/mouthfeel and aftertaste...
October 5, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28973751/genetic-control-and-combining-ability-of-agronomic-attributes-and-northern-leaf-blight-related-attributes-in-popcorn
#7
J S Santos, A T Amaral Júnior, M Vivas, G S Mafra, G F Pena, F H L Silva, A G Guimarães
The present study was conducted to investigate the genetic control and to estimate the general and specific combining abilities of popcorn for agronomic attributes and attributes related to resistance to northern leaf blight (NLB). The 56 hybrids (F1 and reciprocals), together with the eight parent lines and six controls, were evaluated in two harvests, in a randomized-block design with four replications. Dominance components were more expressive than the additive components for grain yield and expression of resistance, and hybridization was the most suitable option for obtaining resistant and productive genotypes...
September 27, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28973748/indices-estimated-using-reml-blup-and-introduction-of-a-super-trait-for-the-selection-of-progenies-in-popcorn
#8
C Vittorazzi, A T Amaral Junior, A G Guimarães, A P Viana, F H L Silva, G F Pena, R F Daher, I F S Gerhardt, G H F Oliveira, M G Pereira
Selection indices commonly utilize economic weights, which become arbitrary genetic gains. In popcorn, this is even more evident due to the negative correlation between the main characteristics of economic importance - grain yield and popping expansion. As an option in the use of classical biometrics as a selection index, the optimal procedure restricted maximum likelihood/best linear unbiased predictor (REML/BLUP) allows the simultaneous estimation of genetic parameters and the prediction of genotypic values...
September 27, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28973743/intraspecific-variability-of-popcorn-s7-lines-for-phosphorus-efficiency-in-the-soil
#9
I F S Gerhardt, A T Amaral Júnior, L J M Guimarães, I A Schwantes, A Santos, S H Kamphorst, V J Lima, F M Poblete, G O Myers
The expansion of agriculture, coupled with the need for sustainable cropping, is one of the greatest challenges of the scientific community working on the generation of new cultivars adapted to abiotic stress conditions. The aim of this study was to evaluate the variability of popcorn lines as to responsiveness and efficiency in phosphorus use, as a first step towards the implementation of a breeding program interested in the practice of sustainable agriculture. Twenty-five popcorn lines were evaluated in two locations with different phosphorus levels in the soil, using a randomized block design...
September 27, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28934608/chemical-free-fabrication-of-n-p-dual-doped-honeycomb-like-carbon-as-an-efficient-electrocatalyst-for-oxygen-reduction
#10
Lianwen Zhu, Jun Wu, Qiao Zhang, Xiangkui Li, Yiming Li, Xuebo Cao
Heteroatom-doped nanoporous carbons are now emerging as alternatives to platinum and its alloys as electrocatalysts to facilitate oxygen reduction reaction in metal-air batteries and fuel cells. However, the synthesis of nanoporous carbons usually involve in complicated procedures and intensive chemicals, which may dramatically raise their manufacture cost that even surpasses that of precious platinum. Herein, we demonstrate the single-step, chemical-free fabrication of N, P dualdoped honeycomb carbon that has hierarchically porous structure and oxygen electrocatalysis activity close to the benchmark Pt/C...
January 15, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28844121/a-rapid-lc-ms-ms-method-for-the-determination-of-moniliformin-and-occurrence-of-this-mycotoxin-in-maize-products-from-the-bavarian-market
#11
Jörg Barthel, Martin Rapp, Heinrich Holtmannspötter, Christoph Gottschalk
A simple LC-MS/MS method was developed for the determination of moniliformin (MON) in maize and applied for the analysis of samples within the official food surveillance. The homogenized samples were extracted with acetonitrile/water 50/50 (v/v) which proved to have the highest extraction efficiency compared to other tested solvents. The centrifuged extracts were diluted with acetonitrile and were measured after chromatographic separation by HILIC (hydrophobic interaction liquid chromatography)-HPLC without any cleanup (dilute and shoot approach)...
August 26, 2017: Mycotoxin Research
https://www.readbyqxmd.com/read/28819968/popcorn-derived-porous-carbon-flakes-with-an-ultrahigh-specific-surface-area-for-superior-performance-supercapacitors
#12
Jianhua Hou, Kun Jiang, Rui Wei, Muhammad Tahir, Xiaoge Wu, Ming Shen, Xiaozhi Wang, Chuanbao Cao
Popcorn-derived porous carbon flakes have been successfully fabricated from the biomass of maize. Utilizing the "puffing effect", the nubby maize grain turned into materials with an interconnected honeycomb-like porous structure composed of carbon flakes. The following chemical activation method enabled the as-prepared products to possess optimized porous structures for electrochemical energy-storage devices, such as multilayer flake-like structures, ultrahigh specific surface area (SBET: 3301 m(2) g(-1)), and a high content of micropores (microporous surface area of 95%, especially the optimized sub-nanopores with the size of 0...
September 13, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28780587/genotyping-by-sequencing-highlights-original-diversity-patterns-within-a-european-collection-of-1191-maize-flint-lines-as-compared-to-the-maize-usda-genebank
#13
Brigitte Gouesnard, Sandra Negro, Amélie Laffray, Jeff Glaubitz, Albrecht Melchinger, Pedro Revilla, Jesus Moreno-Gonzalez, Delphine Madur, Valérie Combes, Christine Tollon-Cordet, Jacques Laborde, Dominique Kermarrec, Cyril Bauland, Laurence Moreau, Alain Charcosset, Stéphane Nicolas
Genotyping by sequencing is suitable for analysis of global diversity in maize. We showed the distinctiveness of flint maize inbred lines of interest to enrich the diversity of breeding programs. Genotyping-by-sequencing (GBS) is a highly cost-effective procedure that permits the analysis of large collections of inbred lines. We used it to characterize diversity in 1191 maize flint inbred lines from the INRA collection, the European Cornfed association panel, and lines recently derived from landraces. We analyzed the properties of GBS data obtained with different imputation methods, through comparison with a 50 K SNP array...
October 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
https://www.readbyqxmd.com/read/28768296/dietary-pattern-and-colonic-diverticulosis
#14
Antonio Tursi
PURPOSE OF REVIEW: To assess the role of dietary pattern on the occurrence of colonic diverticulosis, diverticular disease and acute diverticulitis. RECENT FINDINGS: High-fiber diet does not prevent diverticulosis occurrence, and results about prevention/treatment of diverticular disease and acute diverticulitis are still conflicting.No association was seen between nut, corn or popcorn consumption and occurrence of diverticulosis, diverticular disease and acute diverticulitis...
September 2017: Current Opinion in Clinical Nutrition and Metabolic Care
https://www.readbyqxmd.com/read/28686116/clinical-radiological-and-histological-features-and-treatment-outcomes-of-supratentorial-extraventricular-ependymoma-14-cases-from-a-single-center
#15
Shoujia Sun, Junwen Wang, Mingxin Zhu, Rajluxmee Beejadhursing, Pan Gao, Xiaojing Zhang, Liwu Jiao, Wei Jiang, Changshu Ke, Kai Shu
OBJECTIVE Reports on supratentorial extraventricular ependymoma (STE) are relatively rare. The object of this study was to analyze the clinical, radiological, and histological features and treatment outcomes of 14 patients with STE. METHODS Overall, 227 patients with ependymoma underwent surgical treatment in the authors' department between January 2010 and June 2015; 14 of these patients had STE. Data on clinical presentation, radiological studies, histopathological findings, surgical strategies, and treatment outcomes in these 14 cases were retrospectively analyzed...
July 7, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28675759/sensory-and-physical-effects-of-sugar-reduction-in-a-caramel-coating-system
#16
Emily J Mayhew, Shelly J Schmidt, Soo-Yeun Lee
Sugar reduction in processed foods is a pressing and complex problem, as sugars contribute important sensory and physical properties to foods. Composed of sugars and lipids, caramel coating systems, like the coating in caramel popcorns, exemplify this challenge. In order to probe the feasibility and consequences of sugar reduction, both sensory and physical properties were measured for 3 types of caramel coating systems. Four commonly used sugar alcohols, isomalt, maltitol, mannitol, and sorbitol, with different thermal properties and relative sweetness values were chosen to replace sugar in the caramel coating systems at 25% and 50% sugar reduction levels...
July 4, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28671247/genetic-variability-among-elite-popcorn-lines-based-on-molecular-and-morphoagronomic-characteristics
#17
J F Dos Santos, C A Mangolin, M F P S Machado, C A Scapim, W Giordani, L S A Gonçalves
Knowledge of genetic diversity among genotypes and relationships among elite lines is of great importance for the development of breeding programs. Therefore, the objective of this study was to evaluate genetic variability based on the morphoagronomic and molecular characterization of 18 elite popcorn (Zea mays var. everta) lines to be used by Universidade Estadual de Maringá breeding programs. We used 31 microsatellite primers (widely distributed in the genome), and 16 morphological descriptors (including the resistance to maize white spot, common rust, polysora rust of maize, cercospora and leaf blights)...
June 29, 2017: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28627906/evidence-of-a-goal-directed-process-in-human-pavlovian-instrumental-transfer
#18
Tina Seabrooke, Mike E Le Pelley, Lee Hogarth, Chris J Mitchell
Cues that signal rewards can motivate reward-seeking behaviors, even for outcomes that are not currently desired. Three experiments examined this phenomenon, using an outcome-selective Pavlovian-instrumental transfer (PIT) design and an outcome devaluation procedure. In Experiment 1, participants learned to perform one response to earn crisps points and another response to earn popcorn points. One outcome was then devalued by adulterating it to make it taste unpleasant. On test, overall response choice was biased toward the outcome that had not been devalued, indicating goal-directed control...
October 2017: Journal of Experimental Psychology. Animal Learning and Cognition
https://www.readbyqxmd.com/read/28587783/the-use-of-diacetyl-2-3-butanedione-and-related-flavoring-substances-as-flavorings-added-to-foods-workplace-safety-issues
#19
John B Hallagan
In 2001, staff of the National Institute of Occupational Safety and Health (NIOSH) identified diacetyl (2,3-butanedione) as a "marker" of exposure in a microwave popcorn manufacturing facility in which workers developed severe respiratory illness. Subsequent investigations identified additional workers in food and flavor manufacturing facilities also with severe respiratory illness. The flavor industry, NIOSH, and federal and state regulators conducted significant programs to address workplace safety concerns related to the manufacture of flavors and foods containing added flavors...
August 1, 2017: Toxicology
https://www.readbyqxmd.com/read/28537735/improved-superresolution-imaging-using-telegraph-noise-in-organic-semiconductor-nanoparticles
#20
Yifei Jiang, Muskendol Novoa, Teeranan Nongnual, Rhonda Powell, Terri Bruce, Jason McNeill
Small semiconductor structures often exhibit "telegraph noise". If the number of charge carriers is small, then spontaneous changes in the number of carriers can lead to abrupt switching between two or more discrete levels, leading to burst noise or popcorn noise in transistors. We have observed similar behavior in the fluorescence of organic semiconductor nanoparticles, where typical carrier populations are often less than ∼10 carriers per nanoparticle. Spontaneous changes in the number of charges results in abrupt switching between 2 or more fluorescence intensity levels, because the charges act as highly efficient fluorescence quenchers...
June 14, 2017: Nano Letters
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