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https://www.readbyqxmd.com/read/28441390/parameters-tuning-of-pid-controller-for-automatic-voltage-regulators-using-the-african-buffalo-optimization
#1
Julius Beneoluchi Odili, Mohd Nizam Mohmad Kahar, A Noraziah
In this paper, an attempt is made to apply the African Buffalo Optimization (ABO) to tune the parameters of a PID controller for an effective Automatic Voltage Regulator (AVR). Existing metaheuristic tuning methods have been proven to be quite successful but there were observable areas that need improvements especially in terms of the system's gain overshoot and steady steady state errors. Using the ABO algorithm where each buffalo location in the herd is a candidate solution to the Proportional-Integral-Derivative parameters was very helpful in addressing these two areas of concern...
2017: PloS One
https://www.readbyqxmd.com/read/28440782/systematization-of-clinical-trials-related-to-treatment-of-metabolic-syndrome-1980-2015
#2
Santiago Cardona Velásquez, Laura Guzmán Vivares, Jaiberth Antonio Cardona-Arias
INTRODUCTION: Despite the clinical, epidemiological, and economic significance of metabolic syndrome, the profile of clinical trials on this disease is unknown. OBJECTIVE: To characterize the clinical trials related to treatment of metabolic syndrome during the 1980-2015 period. METHODS: Systematic review of the literature using an ex ante search protocol which followed the phases of the guide Preferred Reporting Items for Systematic Reviews and Meta-Analyses in four multidisciplinary databases with seven search strategies...
February 2017: Endocrinol Diabetes Nutr
https://www.readbyqxmd.com/read/28439669/effects-of-desiccation-and-starvation-on-thermal-tolerance-and-the-heat-shock-response-in-forest-ants
#3
Andrew D Nguyen, Kerri DeNovellis, Skyler Resendez, Jeremy D Pustilnik, Nicholas J Gotelli, Joel D Parker, Sara Helms Cahan
Temperature increases associated with global climate change are likely to be accompanied by additional environmental stressors such as desiccation and food limitation, which may alter how temperature impacts organismal performance. To investigate how interactions between stressors influence thermal tolerance in the common forest ant, Aphaenogaster picea, we compared the thermal resistance of workers to heat shock with and without pre-exposure to desiccation or starvation stress. Knockdown (KD) time at 40.5 °C of desiccated ants was reduced 6% compared to controls, although longer exposure to desiccation did not further reduce thermal tolerance...
April 24, 2017: Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology
https://www.readbyqxmd.com/read/28439543/saving-the-injured-rescue-behavior-in-the-termite-hunting-ant-megaponera-analis
#4
Erik Thomas Frank, Thomas Schmitt, Thomas Hovestadt, Oliver Mitesser, Jonas Stiegler, Karl Eduard Linsenmair
Predators of highly defensive prey likely develop cost-reducing adaptations. The ant Megaponera analis is a specialized termite predator, solely raiding termites of the subfamily Macrotermitinae (in this study, mostly colonies of Pseudocanthotermes sp.) at their foraging sites. The evolutionary arms race between termites and ants led to various defensive mechanisms in termites (for example, a caste specialized in fighting predators). Because M. analis incurs high injury/mortality risks when preying on termites, some risk-mitigating adaptations seem likely to have evolved...
April 2017: Science Advances
https://www.readbyqxmd.com/read/28439247/when-corporate-social-responsibility-csr-meets-organizational-psychology-new-frontiers-in-micro-csr-research-and-fulfilling-a-quid-pro-quo-through-multilevel-insights
#5
David A Jones, Chelsea R Willness, Ante Glavas
Researchers, corporate leaders, and other stakeholders have shown increasing interest in Corporate Social Responsibility (CSR)-a company's discretionary actions and policies that appear to advance societal well-being beyond its immediate financial interests and legal requirements. Spanning decades of research activity, the scholarly literature on CSR has been dominated by meso- and macro-level perspectives, such as studies within corporate strategy that examine relationships between firm-level indicators of social/environmental performance and corporate financial performance...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28438238/behavioral-activation-versus-cognitive-restructuring-to-reduce-automatic-negative-thoughts-in-anxiety-generating-situations
#6
Elvira Nieto Fernández, Jorge Barraca Mairal
BACKGROUND: Recent studies have compared the efficacy of cognitive intervention compared to behavioral techniques for the treatment of different disorders. In line with that work, the empirical study presented here examined the efficacy of Behavioral Activation (BA) and Cognitive Therapy (CT) on Negative Automatic Thoughts (PANs) elicited in situations generating anxiety. METHOD: Based on a sample of 42 students aged 18 to 21 who took the ISRA B, BADS and EROS, 18 subjects with the highest scores were selected and assigned at random to one of two experimental groups or to a control group...
May 2017: Psicothema
https://www.readbyqxmd.com/read/28437732/weaving-through-a-cryptic-species-comparing-the-neotropical-ants-camponotus-senex-and-camponotus-textor-hymenoptera-formicidae
#7
Eduardo Gonçalves Paterson Fox, Daniel Russ Solis, Cristiano Lazoski, William Mackay
Camponotus senex (Fr. Smith 1858) and Camponotus textor Forel, 1899 are commonly confused species in the New World tropics. We provide morphological characteristics based on the larvae and adults, behavioural differences, together with evidence from molecular markers (cuticular hydrocarbon profiles, venom differences, nuclear ribosomal ITS-1, and mtDNA COI sequence comparisons) to separate the two species, demonstrating they are not immediately closely related. In conclusion we suggest new reliable morphological characters which can benefit from deeper phenetic analysis, and support the contextual usefulness of non-morphological tools in resolving sibling ant species...
April 3, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/28437434/comparisons-of-gnrh-antagonist-protocol-versus-gnrh-agonist-long-protocol-in-patients-with-normal-ovarian-reserve-a-systematic-review-and-meta-analysis
#8
Ruolin Wang, Shouren Lin, Yong Wang, Weiping Qian, Liang Zhou
OBJECTIVE: To evaluate the effectiveness and safety of gonadotropin-releasing hormone antagonist (GnRH-ant) protocol and gonadotropin-releasing hormone agonist (GnRH-a) long protocol in patients with normal ovarian reserve. METHODS: We searched the PubMed (1992-2016), Cochrane Library (1999-2016), Web of Science (1950-2016), Chinese Biomedical Database (CBM, 1979-2016), and China National Knowledge Infrastructure (CNKI, 1994-2016). Any randomized controlled trials (RCTs) that compared GnRH-ant protocol and GnRH-a long protocol in patients with normal ovarian reserve were included, and data were extracted independently by two reviewers...
2017: PloS One
https://www.readbyqxmd.com/read/28436484/how-voluntary-orienting-of-attention-and-alerting-modulate-costs-of-conflict-processing
#9
Alberto Zani, Alice Mado Proverbio
There is evidence that pre-cued valid orienting of attention to competing information diminishes costs of brain processing of conflict. Still unclear, because scantily addressed by neuroimaging studies and mostly analyzed by means of behavioral indexing, it is whether conflict undergoes an equivalent modulation by tonic and pre-cued phasic alerting. Here, we investigated the functional relationships between attention orienting, alerting and executive systems using the Attention Network Test (ANT). Both reaction times (RTs) and ERPs were recorded...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428858/genetic-diversity-and-spatial-structure-of-the-rufous-throated-antbird-gymnopithys-rufigula-an-amazonian-obligate-army-ant-follower
#10
Juliana Menger, Klaus Henle, William E Magnusson, Antonella Soro, Martin Husemann, Martin Schlegel
Amazonian understory antbirds are thought to be relatively sedentary and to have limited dispersal ability; they avoid crossing forest gaps, and even narrow roads through a forest may limit their territories. However, most evidence for sedentariness in antbirds comes from field observations and plot-based recapture of adult individuals, which do not provide evidence for lack of genetic dispersal, as this often occurs through juveniles. In this study, we used microsatellite markers and mitochondrial control-region sequences to investigate contemporary and infer historical patterns of genetic diversity and structure of the Rufous-throated Antbird (Gymnopithys rufigula) within and between two large reserves in central Amazonia...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28428850/shortcuts-in-biodiversity-research-what-determines-the-performance-of-higher-taxa-as-surrogates-for-species
#11
Neil Rosser
Biodiversity research is often impeded by the time and resources required to identify species. One possible solution is to use higher taxa to predict species richness and community composition. However, previous studies have shown that the performance of higher taxa as surrogates for species is highly variable, making it difficult to predict whether the method will be reliable for a particular objective. Using 8 independent datasets, I tested whether higher taxa accurately characterize the responses of beetle and ant communities to environmental drivers...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28424508/temperature-warming-strengthens-the-mutualism-between-ghost-ants-and-invasive-mealybugs
#12
Aiming Zhou, Xiaobin Qu, Lifan Shan, Xin Wang
Although the exogenous forces that directly affect the mutualisms between ants and honeydew-producing hemipterans have been well documented, few studies have been focused on the impacts of environmental warming on ant-hemipteran interactions. Here, we investigated how temperature warming affects the mutualism between ghost ant Tapinoma melanocephalum and invasive mealybug Phenacoccus solenopsis by experimental manipulation of temperature. We found that higher temperatures have significant direct effects on the growth rate of mealybug colony, and the positive effect of ant tending on mealybug colony growth is temperature-dependent...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28421807/los-antioxidantes-en-el-proceso-de-patolog%C3%A3-as-oculares
#13
Ana Fernández-Araque, Andrea Giaquinta Aranda, Consuelo Laudo Pardo, Abel Rojo Aragüés
Introducción: la influencia de los antioxidantes en los procesos oculares ha tomado en los últimos años una relevancia importante por sus efectos en la salud visual. El estrés oxidativo es un factor implicado en el desarrollo de las principales patologías tales como cataratas, glaucoma y degeneración macular asociada a la edad (DMAE).Objetivo: establecer la evidencia científica que existe sobre los distintos tipos de antioxidantes y sus efectos en procesos patológicos oculares mediante una revisión sistemática...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421801/actitudes-de-escolares-chilenos-de-distinto-nivel-socioecon%C3%A3-mico-al-inicio-de-la-implementaci%C3%A3-n-de-la-ley-que-regula-la-venta-y-publicidad-de-alimentos-altos-en-nutrientes-cr%C3%A3-ticos
#14
Sonia Olivares Cortes, Jacqueline Araneda Flores, Gladys Morales Illanes, Bárbara Leyton Dinamarca, Nelly Bustos Zapata, María Angélica Hernández Moreno, María Teresa Oyarzún Macchiavello
Introducción: el 27 de junio de 2016 se implementó en Chile la Ley sobre Composición Nutricional de los Alimentos y su Publicidad, que implica rotular el envase de los alimentos procesados, altos en calorías, grasas saturadas, azúcares y sodio.Objetivo: determinar las actitudes de escolares de 8 a 12 años, de distinto nivel socioeconómico (NSE) y estado nutricional, ante el nuevo etiquetado de los alimentos.Métodos: se aplicó una encuesta validada previamente, agregando preguntas sobre los nuevos sellos en los envases de alimentos y bebidas...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28421789/in%C3%AF-uencia-del-aceite-de-coco-en-enfermos-de-alzh%C3%A3-imer-a-nivel-cognitivo
#15
José Enrique De la Rubia Ortí, Carmen Sánchez Álvarez, Pablo Selvi Sabater, Alma María Bueno Cayo, Sandra Sancho Castillo, Mariano Julián Rochina, Iván Hu Yang
Introducción: la enfermedad de Alzheimer es a día de hoy la demencia neurodegenerativa con mayor prevalencia en el primer mundo. Este hecho, unido a la falta de tratamiento farmacológico que cure la enfermedad, hace que se estudien nuevas estrategias terapéuticas no farmacológicas como es la administración de nutrientes. En este sentido, destaca la posible influencia del aceite de coco como fuente energética alternativa, capaz de frenar la muerte neuronal que se produce de modo progresivo en esta enfermedad...
March 30, 2017: Nutrición Hospitalaria: Organo Oficial de la Sociedad Española de Nutrición Parenteral y Enteral
https://www.readbyqxmd.com/read/28419349/genomic-signature-of-kin-selection-in-an-ant-with-obligately-sterile-workers
#16
Michael R Warner, Alexander S Mikheyev, Timothy A Linksvayer
Kin selection is thought to drive the evolution of cooperation and conflict, but the specific genes and genome-wide patterns shaped by kin selection are unknown. We identified thousands of genes associated with the sterile ant worker caste, the archetype of an altruistic phenotype shaped by kin selection, and then used population and comparative genomic approaches to study patterns of molecular evolution at these genes. Consistent with population genetic theoretical predictions, worker-upregulated genes experienced reduced selection compared to genes upregulated in reproductive castes...
April 13, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28419123/low-resistive-vibratory-penetration-in-granular-media
#17
Baptiste Darbois Texier, Alejandro Ibarra, Francisco Melo
Non-cohesive materials such as sand, dry snow or cereals are encountered in various common circumstances, from everyday situations to industry. The process of digging into these materials remains a challenge to most animals and machines. Within the animal kingdom, different strategies are employed to overcome this issue, including excavation methods used by ants, the two-anchor strategy employed by soft burrowers such as razor-clams, and undulatory motions exhibited by sandfish lizards. Despite the development of technology to mimic these techniques in diggers and robots, the limitations of animals and machines may differ, and mimicry of natural processes is not necessarily the most efficient technological strategy...
2017: PloS One
https://www.readbyqxmd.com/read/28417946/essential-oils-of-hyptis-pectinata-chemotypes-isolation-binary-mixtures-and-acute-toxicity-on-leaf-cutting-ants
#18
Rosana B Feitosa-Alcantara, Leandro Bacci, Arie F Blank, Péricles B Alves, Indira Morgana de A Silva, Caroline A Soares, Taís S Sampaio, Paulo Cesar de L Nogueira, Maria de Fátima Arrigoni-Blank
Leaf-cutting ants are pests of great economic importance due to the damage they cause to agricultural and forest crops. The use of organosynthetic insecticides is the main form of control of these insects. In order to develop safer technology, the objective of this work was to evaluate the formicidal activity of the essential oils of two Hyptis pectinata genotypes (chemotypes) and their major compounds on the leaf-cutting ants Acromyrmex balzani Emery and Atta sexdens rubropilosa Forel. Bioassays of exposure pathways (contact and fumigation) and binary mixtures of the major compounds were performed...
April 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28417852/nuclear-medicine-in-pediatric-nephro-urology-an-overview
#19
REVIEW
Iosif Mendichovszky, Bernardita Troncoso Solar, Naima Smeulders, Marina Easty, Lorenzo Biassoni
In the context of ante-natally diagnosed hydronephrosis, the vast majority of children with a dilated renal pelvis do not need any surgical treatment, as the dilatation resolves spontaneously with time. Slow drainage demonstrated at Tc-99m-mercaptoacetyltriglycine (MAG3) renography does not necessarily mean obstruction. Obstruction is defined as resistance to urinary outflow with urinary stasis at the level of the pelvic-ureteric junction (PUJ) which, if left untreated, will damage the kidney. Unfortunately this definition is retrospective and not clinically helpful...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28415037/enantiomer-specific-accumulation-and-depuration-of-%C3%AE-hexabromocyclododecane-%C3%AE-hbcdd-in-chicken-gallus-gallus-as-a-tool-to-identify-contamination-sources
#20
Elsa Omer, Ronan Cariou, Adeline Huneau-Salaün, Gaud Dervilly-Pinel, Élisabeth Baéza, Angélique Travel, Sophie Le Bouquin, Catherine Jondreville, Bruno Le Bizec
A LC-ESI(-)-HRMS method dedicated to the analysis of 6 HBCDD enantiomers at trace levels in animal matrices was developed, using a cellulose based stationary phase with a particle size of 2.5 μm. This method was applied to a sample set derived from a kinetic study of α-HBCDD previously conducted in fast- and slow-growing chickens (Gallus gallus domesticus, n = 49, plus controls), in order to study the enantiomer specific accumulation and depuration of α-HBCDD in various tissues. Regarding abdominal adipose tissue, muscle and liver, the average enantiomeric fractions of α-HBCDD (EFα) for continuously exposed groups ranged between 0...
April 10, 2017: Chemosphere
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