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Non Linear

Ningning Xu, Jianxin Liu, Peiqiang Yu
Corn starch played a critical role in maintaining energy supply for high milk yield. The objectives of this research were to disclose the starch and carbohydrate-related biopolymers degradation in three newly developed corn lines (LM10, LM01 and LD999) during rumen incubation, and detect relationships between molecular structures and starch degradation. Attenuated Total Reflectance Fourier-transform Vibrational Molecular Spectroscopy (ATR-Ft/VMS) was applied to reveal molecular structure conformations that were associated with major nutrients macro-biopolymers...
October 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Diego R V Guelfi, Enric Brillas, Fábio Gozzi, Amílcar Machulek, Silvio C de Oliveira, Ignasi Sirés
The main objective of this work is to demonstrate the viability of solar photoelectro-Fenton (SPEF) process to degrade pesticides in urban wastewater matrix, selecting the herbicide bentazon as a model molecule. In order to provide a correct assessment of the role of the different oxidants and catalysts involved, bentazon was comparatively treated by anodic oxidation with electrogenerated H2 O2 (AO-H2 O2 ), electro-Fenton (EF) and UVA-assisted EF (i.e., PEF) processes as well, either in sulfate or chloride media...
October 17, 2018: Journal of Environmental Management
J J Vandeleest, J P Capitanio, A Hamel, J Meyer, M Novak, S P Mendoza, B McCowan
Hair cortisol concentrations are increasingly being used in both humans and nonhuman animals as a biomarker of chronic stress. However, many details regarding how hair cortisol concentrations relate to the dynamic activity and regulation of the HPA axis are still unknown. The current study explores 1) how the regulation of the HPA axis in infancy relates to hair cortisol concentrations (HCC) in infancy 2) whether this relationship persists into adulthood under conditions of social stability, and 3) how social instability impacts these relationships...
October 12, 2018: Psychoneuroendocrinology
Javier Navarro, Jay Swayambunathan, Max Lerman, Marco Santoro, John P Fisher
The layers in skin determine its protective and hemostasis functions. This layered microstructure cannot be naturally regenerated after severe burns; we aim to reconstruct it using guided tissue regeneration (GTR). In GTR, a membrane is used to regulate tissue growth by stopping fast-proliferating cells and allowing slower cells to migrate and reconstruct specialized microstructures. Here, we proposed the use of keratin membranes crosslinked via dityrosine bonding. Variables from the crosslinking process were grouped within an energy density (ED) parameter to manufacture and evaluate the membranes...
October 17, 2018: Acta Biomaterialia
A Kröger, C Hülsmann, S Fickl, T Spinell, F Hüttig, F Kaufmann, A Heimbach, P Hoffmann, N Enkling, S Renvert, F Schwarz, Ryan T Demmer, P N Papapanou, S Jepsen, M Kebschull
AIM: To cross-sectionally analyze the submucosal microbiome of peri-implantitis (PI) lesions at different severity levels. MATERIALS AND METHODS: Microbial signatures of 45 submucosal plaque samples from untreated peri-implantitis lesions obtained from 30 non-smoking, systemically healthy subjects were assessed by 16s sequencing. Linear mixed models were used to identify taxa with differential abundance by probing depth, after correction for age, gender, and multiple samples per subject...
October 20, 2018: Journal of Clinical Periodontology
Mahdi Abbasian, Azam Baharlouei, Zahra Arab-Bafrani, David A Lightfoot
PURPOSE: High-linear energy transfer (high LET) irradiation has significant cytotoxic effects on different cancerous stem-like cells (CSLCs) such as colorectal CSLCs. A review of the literature has indicated that the presence of gold nanoparticles (GNPs) enables low-LET irradiation to produce highly non-homogeneous dose distributions like high-LET irradiation. The purpose of this study was to evaluate the radioresponsiveness of HT29 colorectal CSLCs under low-LET irradiation (X-ray) and in the presence of GNPs...
October 19, 2018: Journal of Cancer Research and Clinical Oncology
E Eyzop, A Vanier, J Leboucher, H Morvan, M Poulette, M Grall-Bronnec, G Challet-Bouju
Gambling has an inherent structural monetary component, and financial motive is one of the main motivations for gambling. Despite this, and contrary to other addictive behaviours that involve money such as compulsive buying, gambling has never been studied from a materialism perspective. The objective of the present study was to explore the links between materialism and gambling disorder (GD) and whether this relationship is mediated by financial motives for gambling. We compared 65 pathological gamblers (PGs) seeking treatment to 65 matched non-problem gamblers...
October 19, 2018: Journal of Gambling Studies
Carolin Hacker, Xiaofeng Cai, Carsten Kegler, Lei Zhao, A Katharina Weickhmann, Jan Philip Wurm, Helge B Bode, Jens Wöhnert
Several peptides in clinical use are derived from non-ribosomal peptide synthetases (NRPS). In these systems multiple NRPS subunits interact with each other in a specific linear order mediated by specific docking domains (DDs), whose structures are not known yet, to synthesize well-defined peptide products. In contrast to classical NRPSs, single-module NRPS subunits responsible for the generation of rhabdopeptide/xenortide-like peptides (RXPs) can act in different order depending on subunit stoichiometry thereby producing peptide libraries...
October 19, 2018: Nature Communications
Wajee Jaikaew, Adrian Ruff, Panida Khunkaewla, Thomas Erichsen, Wolfgang Schuhmann, Albert Schulte
Robotic square wave voltammetry (SVW) in 24-well microtiter plates has been developed as a reliable non-manual procedure for quantifying drug release from pharmaceutical hydrogels. The assay was established using 1% agarose disks containing Paracetamol® (PCT) as a model preparation. Computerized buffer delivery and SVW in calibration and hydrogel sample wells were performed by a three-electrode arrangement combined with a thin plastic tube. For the glassy carbon working electrode of the assembly the upper limit of the linear response and the lower detection limit of sequential 'in-well' PCT-SVW were 1000 and 0...
December 24, 2018: Analytica Chimica Acta
Christy Goldsmith, P Nicholas Plowman, Melanie M Green, Roger G Dale, Patricia M Price
BACKGROUND: Stereotactic ablative radiotherapy (SABR) offers an alternative treatment for pancreatic cancer, with the potential for improved tumour control and reduced toxicity compared with conventional therapies. However, optimal dose planning and delivery strategies are unelucidated and gastro-intestinal (GI) toxicity remains a key concern. METHODS: Patients with inoperable non-metastatic pancreatic cancer who received CyberKnife® SABR (18-36 Gy) in three fractions as primary, adjuvant, consolidation or re-treatment options were studied...
October 19, 2018: Radiation Oncology
Alice Dal Fovo, Mohamed Oujja, Mikel Sanz, Alejandro Martínez-Hernández, Maria Vega Cañamares, Marta Castillejo, Raffaella Fontana
The documentation and monitoring of cleaning operations on paintings benefit from the identification and determination of thickness of the materials to be selectively removed. Since in artworks diagnosis the preservation of the object's integrity is a priority, the application of non-invasive techniques is commonly preferred. In this work, we present the results obtained with a set of non-invasive optical techniques for the chemical and physical characterization of six copper-phthalocyanine (Cu-Pc) acrylic paints...
September 22, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
Zachary C Johnson, Scott G Leibowitz, Ryan A Hill
Watersheds provide a range of services valued by society, incorporating biotic and abiotic functions within their boundaries. Recently, an operational definition of watershed integrity was applied and indices of watershed integrity (IWI) and catchment integrity (ICI) were developed and mapped for the conterminous United States. However, these indices were originally derived using equally-weighted first-order approximations of relationships between anthropogenic stressors (obtained from the U.S. EPA's StreamCat dataset) and six watershed functions...
October 10, 2018: Science of the Total Environment
Jian Cheng, Zhiwei Xu, Hilary Bambrick, Hong Su, Shilu Tong, Wenbiao Hu
OBJECTIVES: Evidence is limited on the relative contribution of different temperature exposures (i.e., heat, cold and significant temperature variability) to mortality. This study aims to examine mortality risk and associated mortality burden from heat, cold, and temperature variability in Australia. METHODS: We collected daily time-series data on all-cause deaths and weather variables for the five most populous Australian cities (Sydney, Melbourne, Brisbane, Adelaide, and Perth), from 2000 to 2009...
October 15, 2018: Science of the Total Environment
Valérie Dormal, Vincent Bremhorst, Séverine Lannoy, Vincent Lorant, Amandine Luquiens, Pierre Maurage
BACKGROUND: Binge drinking (BD) is frequently observed in youth, with psychological and cognitive consequences, but its link with quality of life has been scarcely explored. METHODS: Sociodemographic and alcohol consumption characteristics were collected in a cross-sectional survey including 15,020 European students. Health-related quality of life was assessed using the Alcohol Quality of Life Scale (AQoLS) measuring the self-reported negative impact of alcohol consumption...
October 9, 2018: Drug and Alcohol Dependence
Lu Xing, Minggao Xue, Mingsheng Hu
The environmental and resource issues that accompany rapid economic growth have attracted the attention of the government and the public. Multiple non-linear and complicated interactions exist between the economy, resource and environment subsystem. Accordingly, understanding the operating mechanism of the economy-resource-environment (ERE) system and evaluating its coordination level are of immense significance for sustainable urban development. This study uses system dynamics (SD) to build a dynamic model of the ERE system...
October 11, 2018: Journal of Environmental Management
Sara Bover-Cid, Cristina Serra-Castelló, Paw Dalgaard, Margarita Garriga, Anna Jofré
The aim of the present study was to understand growth and survival responses of Listeria monocytogenes during the storage of high pressure processed (HPP) cooked ham formulated with organic acids to inhibit growth of the pathogen. Cooked ham batches were manufactured without organic acids (control), with potassium lactate (2.8% or 4%) or with potassium lactate and sodium diacetate (2.0% + 0.11% or 2.0% + 0.45%). Products were aseptically sliced and inoculated with 107  cfu/g or 102  cfu/g of either L...
October 6, 2018: International Journal of Food Microbiology
Daniele Borzelli, Benedetta Cesqui, Denise J Berger, Etienne Burdet, Andrea d'Avella
Manipulative actions involving unstable interactions with the environment require controlling mechanical impedance through muscle co-contraction. While much research has focused on how the central nervous system (CNS) selects the muscle patterns underlying a desired movement or end-point force, the coordination strategies used to achieve a desired end-point impedance have received considerably less attention. We recorded isometric forces at the hand and electromyographic (EMG) signals in subjects performing a reaching task with an external disturbance...
2018: PloS One
Pieta Näsänen-Gilmore, Marika Sipola-Leppänen, Marjaana Tikanmäki, Hanna-Maria Matinolli, Johan G Eriksson, Marjo-Riitta Järvelin, Marja Vääräsmäki, Petteri Hovi, Eero Kajantie
Very preterm birth, before the gestational age (GA) of 32 weeks, increases the risk of obstructed airflow in adulthood. We examined whether all preterm births (GA<37 weeks) are associated with poorer adult lung function and whether any associations are explained by maternal, early life/neonatal, or current life factors. Participants of the ESTER Preterm Birth Study, born between 1985 and 1989 (during the pre-surfactant era), at the age of 23 years participated in a clinical study in which they performed spirometry and provided detailed medical history...
2018: PloS One
Lívia Vieira Carlini Charamba, Rayany Magali da Rocha Santana, Graziele Elisandra do Nascimento, Bruno Vieira Carlini Charamba, Maiara Celine de Moura, Luana Cassandra Breitenbach Barroso Coelho, Julierme Gomes Correia de Oliveira, Marta Maria Menezes Bezerra Duarte, Daniella Carla Napoleão
The study evaluated the advanced oxidative processes concerning the degradation of green leaf and purple açaí dyes, as well as the prediction of data through artificial neural networks (ANNs). It was verified that percentage of degradation on the wavelengths (λ) of 215, 248, 523 and 627 nm was 5.95, 49.99, 98.17 and 95.99%, respectively, when UV/H2 O2 action and UV-C radiation was applied. A non-linear kinetic model proposed by Chan and Chu presented a good fit to the experimental data, reaching an R2 value between 0...
October 2018: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Laura M Paulin, Benjamin M Smith, Abby Koch, MeiLan Han, Eric A Hoffman, Carlos Martinez, Chinedu Ejike, Paul D Blanc, Jennifer Rous, R Graham Barr, Stephen P Peters, Robert Paine, Cheryl Pirozzi, Christopher B Cooper, Mark T Dransfield, Alejandro P Comellas, Richard E Kanner, M Brad Drummond, Nirupama Putcha, Nadia N Hansel
RATIONALE: Quantitative computed tomography (CT) imaging can aid in COPD phenotyping. Few studies have identified whether occupational exposures are associated with distinct CT imaging characteristics. OBJECTIVE: To examine the association between occupational exposures and CT-measured patterns of disease in the Subpopulations and Intermediate Outcome Measures in COPD Study (SPIROMICS). METHODS: Participants underwent whole-lung multidetector helical CT at full inspiration and expiration...
October 19, 2018: Annals of the American Thoracic Society
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