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https://www.readbyqxmd.com/read/28647414/effect-of-different-packaging-materials-containing-poly-2-tert-butylamino-methylstyrene-on-the-growth-of-spoilage-and-pathogenic-bacteria-on-fresh-meat
#1
S Dohlen, C Braun, F Brodkorb, B Fischer, Y Ilg, K Kalbfleisch, R Lorenz, M Kreyenschmidt, J Kreyenschmidt
The objective of this study was to investigate the effect of novel antimicrobial packaging materials containing poly-[2-(tertbutylamino) methylstyrene] (poly(TBAMS)) on the growth of typical spoilage and pathogenic bacteria present on meat. The antimicrobial activity of materials containing different poly(TBAMS) concentrations was determined by comparing the bacterial counts on reference and sample materials at different temperatures and times and in the presence of meat components. Storage tests with poultry fillets and veal cutlets were conducted with samples vacuum packaged in the reference foil and foil containing 10% poly(TBAMS)...
June 13, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28647189/ethnobotanical-profiling-of-the-medicinal-flora-of-kotli-azad-jammu-and-kashmir-pakistan-empirical-reflections-on-multinomial-logit-specifications
#2
Muhammad Shoaib Amjad, Muhammad Arshad, Abdul Saboor, Sue Page, Sunbal Khalil Chaudhari
OBJECTIVE: To report the indigenous people's uses of plants from a multidimensional perspective in a remote area where strong ethnobotanical cultural practices prevail. METHODS: An ethnobotanical survey was conducted in the field during 2014-2016. Ethnobotanical data were gathered from 182 informants through oral interviews and semi-structured questionnaires. The distribution of plants was explored using both descriptive and graphical methods. Further, a Multinomial Logit Specification was applied to find out the probability of the occurrence of diverse utilization of plants in multipurpose domains...
May 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28646974/testing-the-feasibility-of-a-briefer-school-based-preventive-intervention-with-aggressive-children-a-hybrid-intervention-with-face-to-face-and-internet-components
#3
John E Lochman, Caroline L Boxmeyer, Shannon Jones, Lixin Qu, David Ewoldsen, W Michael Nelson
This study describes the results from a feasibility study of an innovative indicated prevention intervention with hybrid face-to-face and web-based components for preadolescent youth. This intervention includes a considerably briefer set of face-to-face sessions from the evidence-based Coping Power program and a carefully integrated internet component with practice and teaching activities and cartoon videos for children and for parents. The Coping Power - Internet Enhanced (CP-IE) program introduces a set of cognitive-behavioral skills in 12 small group sessions for children delivered during the school day and 7 group sessions for parents...
June 2017: Journal of School Psychology
https://www.readbyqxmd.com/read/28646778/the-hydrological-functioning-of-a-constructed-fen-wetland-watershed
#4
Scott J Ketcheson, Jonathan S Price, Owen Sutton, George Sutherland, Eric Kessel, Richard M Petrone
Mine reclamation requires the reconstruction of entire landforms and drainage systems. The hydrological regime of reclaimed landscapes will be a manifestation of the processes operating within the individual landforms that comprise it. Hydrology is the most important process regulating wetland function and development, via strong controls on chemical and biotic processes. Accordingly, this research addresses the growing and immediate need to understand the hydrological processes that operate within reconstructed landscapes following resource extraction...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28646193/fabrication-of-nitrogen-doped-nano-onions-and-their-electrocatalytic-activity-toward-the-oxygen-reduction-reaction
#5
E Y Choi, C K Kim
Nitrogen-doped nano-onions (NNO) were prepared as electrocatalytic materials for the oxygen reduction reaction (ORR). The nano-onions (NO), spherical graphitic material particles, were prepared by pyrolysis of nanodiamonds (ND). Oxidized NO (ONO) was prepared from NO by a modified Hummers' method, and this was mixed with urea, followed by pyrolysis, resulting in the formation of NNO. The nitrogen content and molar ratio of nitrogen-containing groups in the NNOs were varied by controlling the oxygen content of ONO to explore the effect of nitrogen content on the ORR activity...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646183/differences-in-nature-of-electrical-conductions-among-bi4ti3o12-based-ferroelectric-polycrystalline-ceramics
#6
Changbai Long, Qi Chang, Huiqing Fan
Bismuth titanate Bi4Ti3O12 (BiT), was one of the most promising lead-free high-temperature piezoelectric materials, due to high Curie temperature (675 °C) and large spontaneous polarization (50 µC/cm(2)); however, extensive studies had revealed that high leakage conductivity interferes with the poling process, hindering its practical applications. In this paper, an electrically insulating property was achieved by a low level Nb donor substitution to suppress a high level of holes associated with high oxygen vacancy concentration...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646181/surface-bioactivation-through-the-nanostructured-layer-on-titanium-modified-by-facile-hpt-treatment
#7
Zhijun Guo, Nan Jiang, Chen Chen, Songsong Zhu, Li Zhang, Yubao Li
Facile fabrication of nanostructured surface is of great importance for the use of titanium (Ti) implants in biomedical field. In this study, a low-cost and easy-to-operate method called HPT (hydrothermal & pressure) here has been developed and used to fabricate the expected nanostructured surface on Ti substrates. The effects of experimental parameters on the morphology of Ti surface were investigated and characterized. The results indicated that by altering the hydrothermal pressure, NaOH concentration and treating time, surface nanostructure like nanopetals or nanoflakes could be formed on the surface of Ti substrates...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646153/giant-rashba-effect-at-the-topological-surface-of-prge-revealing-antiferromagnetic-spintronics
#8
Soma Banik, Pranab Kumar Das, Azzedine Bendounan, Ivana Vobornik, A Arya, Nathan Beaulieu, Jun Fujii, A Thamizhavel, P U Sastry, A K Sinha, D M Phase, S K Deb
Rashba spin-orbit splitting in the magnetic materials opens up a new perspective in the field of spintronics. Here, we report a giant Rashba spin-orbit splitting on the PrGe [010] surface in the paramagnetic phase with Rashba coefficient α R  = 5 eVÅ. We find that α R can be tuned in this system as a function of temperature at different magnetic phases. Rashba type spin polarized surface states originates due to the strong hybridization between Pr 4f states with the conduction electrons. Significant changes observed in the spin polarized surface states across the magnetic transitions are due to the competition between Dzyaloshinsky-Moriya interaction and exchange interaction present in this system...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646137/three-dimensional-multi-doped-porous-carbon-graphene-derived-from-sewage-sludge-with-template-assisted-fe-pillared-montmorillonite-for-enhanced-oxygen-reduction-reaction
#9
Meiqing Chen, Pingxiao Wu, Liya Chen, Shanshan Yang, Langfeng Yu, Yuefei Ding, Nengwu Zhu, Zhenqing Shi, Zehua Liu
Three-dimensional multi-doped porous carbon/graphene (Fe-Mt-SS-C) was prepared by carbonization of sewage sludge with template-assisted Fe-pillared montmorillonite. The material consisted of nanosheet- and particle- carbon had a high specific surface area (784.46 m(2)·g(-1)) and hierarchical porous structure of micro-, meso- and macropores. The prepared Fe-Mt-SS-C had a high degree of graphitization and large amount of defect atoms. The pyrolysis process made full use of the C, N, Fe, and S by turning them into the carbon framework of the as-obtained material in situ...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646133/effects-of-energetic-ion-irradiation-on-wse2-sic-heterostructures
#10
Tan Shi, Roger C Walker, Igor Jovanovic, Joshua A Robinson
The remarkable electronic properties of layered semiconducting transition metal dichalcogenides (TMDs) make them promising candidates for next-generation ultrathin, low-power, high-speed electronics. It has been suggested that electronics based upon ultra-thin TMDs may be appropriate for use in high radiation environments such as space. Here, we present the effects of irradiation by protons, iron, and silver ions at MeV-level energies on a WSe2/6H-SiC vertical heterostructure studied using XPS and UV-Vis-NIR spectroscopy...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28645956/exploring-the-components-of-physician-volunteer-engagement-a-qualitative-investigation-of-a-national-canadian-simulation-based-training-programme
#11
Aimee J Sarti, Stephanie Sutherland, Angele Landriault, Kirk DesRosier, Susan Brien, Pierre Cardinal
OBJECTIVES: Conceptual clarity on physician volunteer engagement is lacking in the medical literature. The aim of this study was to present a conceptual framework to describe the elements which influence physician volunteer engagement and to explore volunteer engagement within a national educational programme. SETTING: The context for this study was the Acute Critical Events Simulation (ACES) programme in Canada, which has successfully evolved into a national educational programme, driven by physician volunteers...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28645067/using-a-detailed-inventory-of-a-large-wastewater-treatment-plant-to-estimate-the-relative-importance-of-construction-to-the-overall-environmental-impacts
#12
Serni Morera, Lluís Corominas, Miquel Rigola, Manel Poch, Joaquim Comas
The aim of this work is to quantify the relative contribution to the overall environmental impact of the construction phase compared to the operational phase for a large conventional activated sludge wastewater treatment plant (WWTP). To estimate these environmental impacts, a systematic procedure was designed to obtain the detailed Life Cycle Inventories (LCI) for civil works and equipment, taking as starting point the construction project budget and the list of equipment installed at the Girona WWTP, which are the most reliable information sources of materials and resources used during the construction phase...
June 2, 2017: Water Research
https://www.readbyqxmd.com/read/28645043/in-vitro-and-in-vivo-behavior-of-dna-tetrahedrons-as-tumor-targeting-nanocarriers-for-doxorubicin-delivery
#13
Ji Hee Kang, Kyoung-Ran Kim, Hyukjin Lee, Dae-Ro Ahn, Young Tag Ko
Deoxyribonucleic acid (DNA) is a versatile material with high applicability and inherent biocompatibility. L-DNA, the perfect mirror form of the naturally occurring D-DNA, has been used in DNA nanotechnology. It has thermodynamically identical properties to D-DNA, is capable of self-assembly and bio-orthogonal base-pairing, and is resistant to nuclease activity. We previously constructed an L-DNA tetrahedron (L-Td) and found that this nanostructure has remarkably higher capacity for cell penetration than its natural counterpart (D-Td)...
June 16, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28645032/physiological-traits-and-antioxidant-metabolism-of-leaves-of-tropical-woody-species-challenged-with-cement-dust
#14
Advanio Inácio Siqueira-Silva, Eduardo Gusmão Pereira, José Pires de Lemos-Filho, Luzia Valentina Modolo, Elder Antonio Sousa Paiva
Tropical woody species occurring in limestone outcrops are frequently exposed to particulate material from cement factories. The effects of 60-day cement dust exposure on physiological traits and enzymatic antioxidant system of young plant leaves of Guazuma ulmifolia Lam., Myracrodruon urundeuva Allemão and Trichilia hirta L. were investigated. Cement dust (2.5 or 5mgcm(-2)) was applied to the leaf surface or soil or both (leaf plus soil) and plants were maintained at greenhouse. Cement dust barely affected the mineral nutrient levels, except for iron whose content was decreased in leaves/leaflets of all species studied...
June 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28644652/topological-insulators-in-amorphous-systems
#15
Adhip Agarwala, Vijay B Shenoy
Much of the current understanding of topological insulators, which informs the experimental search for topological materials and systems, is based on crystalline band theory, where local electronic degrees of freedom at different crystal sites hybridize with each other in ways that produce nontrivial topology. Here we provide a novel theoretical demonstration of realizing topological phases in amorphous systems, as exemplified by a set of sites randomly located in space. We show this by constructing hopping models on such random lattices whose gapped ground states are shown to possess nontrivial topological nature (characterized by Bott indices) that manifests as quantized conductances in systems with a boundary...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644638/ferroelectric-domain-patterning-controlled-schottky-junction-state-in-monolayer-mos_-2
#16
Zhiyong Xiao, Jingfeng Song, David K Ferry, Stephen Ducharme, Xia Hong
We exploit scanning-probe-controlled domain patterning in a ferroelectric top layer to induce nonvolatile modulation of the conduction characteristic of monolayer MoS_{2} between a transistor and a junction state. In the presence of a domain wall, MoS_{2} exhibits rectified I-V characteristics that are well described by the thermionic emission model. The induced Schottky barrier height Φ_{B}^{eff} varies from 0.38 to 0.57 eV and is tunable by a SiO_{2} global back gate, while the tuning range of Φ_{B}^{eff} depends sensitively on the conduction-band-tail trapping states...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28644498/the-mechanism-of-anomalous-hardening-in-transition-metal-monoborides
#17
Yongcheng Liang, Zhenbang Gao, Ping Qin, Li Gao, Chun Tang
The quest for novel nanomaterials with unusual functionalities continues to be a central challenge to modern nanoscience. Here we report a surprisingly anomalous hardening behavior exhibited by a class of transition-metal monoborides (TMB). Most remarkable is the occurrence of the intrinsic hardness maximum at the valence-electron concentration (VEC) of about 8 electrons per formula unit (e per f.u.); both lower and higher VECs lead to the decrease of hardness, contrasting with the expected positive correlation between hardness and VEC...
June 23, 2017: Nanoscale
https://www.readbyqxmd.com/read/28644110/detailed-magnetic-resonance-imaging-features-of-a-case-series-of-primary-gliosarcoma
#18
Luísa Sampaio, Paulo Linhares, José Fonseca
Objective We aimed to characterise the magnetic resonance imaging (MRI) features of a case series of primary gliosarcoma, with the inclusion of diffusion-weighted imaging and perfusion imaging with dynamic susceptibility contrast MRI. Materials and methods We conducted a retrospective study of cases of primary gliosarcoma from the Pathology Department database from January 2006 to December 2014. Clinical and demographic data were obtained. Two neuroradiologists, blinded to diagnosis, assessed tumour location, signal intensity in T1 and T2-weighted images, pattern of enhancement, diffusion-weighted imaging and dynamic susceptibility contrast MRI studies on preoperative MRI...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28642925/the-effect-of-gelatinase-production-of-enterococcus-faecalis-on-adhesion-to-dentin-after-irrigation-with-various-endodontic-irrigants
#19
Mehmet Burak Guneser, Ayce Unverdi Eldeniz
Objectives: The aim of this study was to evaluate whether the gelatinase production ability of Enterococcus faecalis provides any advantage on adhesion of this bacterium to dentin treated with various irrigants and their combinations. Materials and methods: Standardized dentin discs were randomly divided into five groups (n = 20): group 1: 2.5% sodium hypochlorite (NaOCl), group 2: 2% chlorhexidine (CHX), group 3: NaOCl + Saline + CHX, group 4: NaOCl + EDTA + NaOCl, group 5: QMix. After incubation of dentin discs with irrigants, each group was divided into two subgroups (n = 10) according to the bacterial strains used; a gelatinase-producing and a gelatinase-deficient strain of E...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642784/novel-miscanthus-germplasm-based-value-chains-a-life-cycle-assessment
#20
Moritz Wagner, Andreas Kiesel, Astley Hastings, Yasir Iqbal, Iris Lewandowski
In recent years, considerable progress has been made in miscanthus research: improvement of management practices, breeding of new genotypes, especially for marginal conditions, and development of novel utilization options. The purpose of the current study was a holistic analysis of the environmental performance of such novel miscanthus-based value chains. In addition, the relevance of the analyzed environmental impact categories was assessed. A Life Cycle Assessment was conducted to analyse the environmental performance of the miscanthus-based value chains in 18 impact categories...
2017: Frontiers in Plant Science
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