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https://www.readbyqxmd.com/read/29331431/robust-synchronization-of-master-slave-chaotic-systems-using-approximate-model-an-experimental-study
#1
Hafiz Ahmed, Ivan Salgado, Héctor Ríos
Robust synchronization of master slave chaotic systems are considered in this work. First an approximate model of the error system is obtained using the ultra-local model concept. Then a Continuous Singular Terminal Sliding-Mode (CSTSM) Controller is designed for the purpose of synchronization. The proposed approach is output feedback-based and uses fixed-time higher order sliding-mode (HOSM) differentiator for state estimation. Numerical simulation and experimental results are given to show the effectiveness of the proposed technique...
January 10, 2018: ISA Transactions
https://www.readbyqxmd.com/read/29324863/correction-orion-detecting-regions-of-the-human-non-coding-genome-that-are-intolerant-to-variation-using-population-genetics
#2
Ayal B Gussow, Brett R Copeland, Ryan S Dhindsa, Quanli Wang, Slavé Petrovski, William H Majoros, Andrew S Allen, David B Goldstein
[This corrects the article DOI: 10.1371/journal.pone.0181604.].
2018: PloS One
https://www.readbyqxmd.com/read/29315305/serological-and-molecular-inquiry-of-chagas-disease-in-an-afro-descendant-settlement-in-mato-grosso-do-sul-state-brazil
#3
Mariana Furquim da Silva Martins, Mariane Barroso Pereira, Juliana de Jesus Guimarães Ferreira, Adriana de Oliveira França, Marlon Cézar Cominetti, Eduardo de Castro Ferreira, Maria Elizabeth Moraes Cavalheiros Dorval, Cláudio Lúcio Rossi, Sílvia de Barros Mazon, Eros Antonio de Almeida, Sandra Cecília Botelho Costa, Gláucia Elisete Barbosa Marcon
Furnas do Dionísio is a Brazilian Afro-descendant settlement in the city of Jaraguari, 21.4 miles from Campo Grande, Mato Grosso do Sul, Brazil. Approximately 96 families live in this quilombola (Maroon) settlement, also known in Brazil as a remnant community of descendants of African slaves. Recent studies found 20% of households were infested by triatomines, 18% of insects captured in the community were infected by Trypanosoma cruzi, and 22.7% of dogs presented T. cruzi antibodies. The low prevalence of Chagas disease observed in humans in Mato Grosso do Sul State is attributed to its arrival via colonist migration and subsequent transplacental transmission...
2018: PloS One
https://www.readbyqxmd.com/read/29311410/high-prevalence-of-hepatitis-b-subgenotype-d4-in-northeast-brazil-an-ancient-relic-from-african-continent
#4
Max D Cruz-Santos, Michele S Gomes-Gouvêa, Jomar D Costa-Nunes, Camila Malta-Romano, Marinilde Teles-Sousa, Lena M Fonseca-Barros, Flair J Carrilho, Adalgisa de S Paiva-Ferreira, João R Rebello-Pinho
INTRODUCTION: Hepatitis B virus (HBV) infection leads to a chronic liver disease that is distributed worldwide. The characterization of HBV into genotypes/subgenotypes is not only a mere procedure for distinguishing different HBV strains around the world because determining their geographic distribution is crucial to understanding their spread across the world. MATERIAL AND METHODS: We characterized different HBV genotypes and subgenotypes in five municipalities located in northeastern Maranhão, in the Brazilian north Atlantic coast...
December 27, 2017: Annals of Hepatology
https://www.readbyqxmd.com/read/29311321/women-live-longer-than-men-even-during-severe-famines-and-epidemics
#5
Virginia Zarulli, Julia A Barthold Jones, Anna Oksuzyan, Rune Lindahl-Jacobsen, Kaare Christensen, James W Vaupel
Women in almost all modern populations live longer than men. Research to date provides evidence for both biological and social factors influencing this gender gap. Conditions when both men and women experience extremely high levels of mortality risk are unexplored sources of information. We investigate the survival of both sexes in seven populations under extreme conditions from famines, epidemics, and slavery. Women survived better than men: In all populations, they had lower mortality across almost all ages, and, with the exception of one slave population, they lived longer on average than men...
January 8, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29277074/analysis-of-19th-century-ceramic-fragments-excavated-from-piren%C3%A3-polis-goi%C3%A3-s-brazil-using-ft-ir-raman-xrf-and-sem
#6
Renato P Freitas, Filipe A Coelho, Valter S Felix, Marcelo O Pereira, Marcos André Torres de Souza, Marcelino J Anjos
This study used Raman, FT-IR and XRF spectroscopy and SEM to analyze ceramic fragments dating from the 19th century, excavated from an old farm in the municipality of Pirenópolis, Goiás, Brazil. The results show that the samples were produced in an open oven at a firing temperature below 500°C, using raw materials including kaolinite, hematite, magnetite, quartz, microcline, albite, anhydrite, calcite, illite, orthoclase and MnO2. Although the analyses showed similarities in the manufacturing process and the presence of many minerals was common in all samples, multivariate statistical methods (PCA) allowed a more detailed assessment of similarities and differences in the mineral composition of the samples...
December 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29249867/reflection-a-socratic-approach
#7
Inge C M Van Seggelen-Damen, René Van Hezewijk, Anne S Helsdingen, Iwan G J H Wopereis
Reflection is a fuzzy concept. In this article we reveal the paradoxes involved in studying the nature of reflection. Whereas some scholars emphasize its discursive nature, we go further and underline its resemblance to the self-biased dialogue Socrates had with the slave in Plato's Meno. The individual and internal nature of the reflection process creates difficulty for studying it validly and reliably. We focus on methodological issues and use Hans Linschoten's view of coupled systems to identify, analyze, and interpret empirical research on reflection...
December 2017: Theory & Psychology
https://www.readbyqxmd.com/read/29245028/on-site-evaluation-of-wagyu-beef-carcasses-based-on-the-monounsaturated-oleic-and-saturated-fatty-acid-composition-using-a-handheld-fiber-optic-near-infrared-spectrometer
#8
S Piao, T Okura, M Irie
The fat quality is an important aspect, especially for Wagyu beef. A handheld fiber-optic near-infrared spectrometer for on-site evaluation of beef fat quality was developed, and the interactance spectra of the intermuscular fat from 833 Wagyu carcasses at 12 markets were measured. The calibration model was transferred to five slave instruments using twenty-six block samples. The performance of one slave instrument was verified at five meat markets (n=360). The coefficients of determination of the slave instrument for monounsaturated, oleic, and saturated fatty acid compositions determined by gas chromatography and near-infrared measurements were 0...
November 27, 2017: Meat Science
https://www.readbyqxmd.com/read/29243934/water-like-behavior-of-formamide-jump-reorientation-probed-by-extended-depolarized-light-scattering
#9
Stefania Perticaroli, Lucia Comez, Paola Sassi, Assunta Morresi, Daniele Fioretto, Marco Paolantoni
Water is a strong self-associated liquid with peculiar properties that crucially depend on H-bonding. As regards its molecular dynamics, only recently water reorientation has been successfully described based on a jump mechanism, which is responsible for the overall H-bonding exchange. Here, using high-resolution broad-band depolarized light scattering, we have investigated the reorientational dynamics of formamide (FA) as a function of concentration from the neat liquid to diluted aqueous solutions. Our main findings indicate that in the diluted regime the water rearrangement can trigger the motion of FA solute molecules, which are forced to reorient at the same rate as water...
December 15, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29226214/the-legacy-of-slavery-and-contemporary-declines-in-heart-disease-mortality-in-the-u-s-south
#10
Michael R Kramer, Nyesha C Black, Stephen A Matthews, Sherman A James
Background: This study aims to characterize the role of county-specific legacy of slavery in patterning temporal (i.e., 1968-2014), and geographic (i.e., Southern counties) declines in heart disease mortality. In this context, the U.S. has witnessed dramatic declines in heart disease mortality since the 1960's, which have benefitted place and race groups unevenly, with slower declines in the South, especially for the Black population. Methods: Age-adjusted race- and county-specific mortality rates from 1968-2014 for all diseases of the heart were calculated for all Southern U...
December 2017: SSM—Population Health
https://www.readbyqxmd.com/read/29211182/-prevalence-of-hemoglobin-variants-in-quilombola-communities-in-the-state-of-piau%C3%A3-brazil
#11
Leonardo Ferreira Soares, Eleonidas Moura Lima, José Alexsandro da Silva, Suenia Soares Fernandes, Keyla Malba da Costa Silva, Sarah Pereira Lins, Bolivar Ponciano Goulart de Lima Damasceno, Roseane Mara Cardoso Lima Verde, Marilda de Souza Gonçalves
Hemoglobin variants (Hb) result from mutations in globin genes, with amino acid substitution in the polypeptide chain. Among the most common structural variants are HbS, HbC, HbD and HbE. The S hemoglobin gene is a high frequency gene across America and Brazil, where it is more frequent in the Southeast and Northeast. The scope of this article is to investigate the presence of hemoglobin variants in 15 quilombos (fugitive slave communities) of Piaui. The sample was of 1,239 people and hemoglobin was screened by high-performance liquid chromatography (HPLC)...
November 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/29202686/species-specific-genes-under-selection-characterize-the-co-evolution-of-slavemaker-and-host-lifestyles
#12
B Feldmeyer, D Elsner, A Alleman, S Foitzik
BACKGROUND: The transition to a parasitic lifestyle entails comprehensive changes to the selective regime. In parasites, genes encoding for traits that facilitate host detection, exploitation and transmission should be under selection. Slavemaking ants are social parasites that exploit the altruistic behaviour of their hosts by stealing heterospecific host brood during raids, which afterwards serve as slaves in slavemaker nests. Here we search for evidence of selection in the transcriptomes of three slavemaker species and three closely related hosts...
December 4, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/29187975/evolutionary-structure-of-plasmodium-falciparum-major-variant-surface-antigen-genes-in-south-america-implications-for-epidemic-transmission-and-surveillance
#13
Virginie Rougeron, Kathryn E Tiedje, Donald S Chen, Thomas S Rask, Dionicia Gamboa, Amanda Maestre, Lise Musset, Eric Legrand, Oscar Noya, Erhan Yalcindag, François Renaud, Franck Prugnolle, Karen P Day
Strong founder effects resulting from human migration out of Africa have led to geographic variation in single nucleotide polymorphisms (SNPs) and microsatellites (MS) of the malaria parasite, Plasmodium falciparum. This is particularly striking in South America where two major founder populations of P. falciparum have been identified that are presumed to have arisen from the transatlantic slave trade. Given the importance of the major variant surface antigen of the blood stages of P. falciparum as both a virulence factor and target of immunity, we decided to investigate the population genetics of the genes encoding "Plasmodium falciparum Erythrocyte Membrane Protein 1" (Pf EMP1) among several countries in South America, in order to evaluate the transmission patterns of malaria in this continent...
November 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29182637/local-ecological-knowledge-and-its-relationship-with-biodiversity-conservation-among-two-quilombola-groups-living-in-the-atlantic-rainforest-brazil
#14
Bruno Esteves Conde, Tamara Ticktin, Amanda Surerus Fonseca, Arthur Ladeira Macedo, Timothy Ongaro Orsi, Luciana Moreira Chedier, Eliana Rodrigues, Daniel Sales Pimenta
Information on the knowledge, uses, and abundance of natural resources in local communities can provide insight on conservation status and conservation strategies in these locations. The aim of this research was to evaluate the uses, knowledge and conservation status of plants in two Quilombolas (descendants of slaves of African origin) communities in the Atlantic rainforest of Brazil, São Sebastião da Boa Vista (SSBV) and São Bento (SB). We used a combination of ethnobotanical and ecological survey methods to ask: 1) What ethnobotanical knowledge do the communities hold? 2) What native species are most valuable to them? 3) What is the conservation status of the native species used? Thirteen local experts described the names and uses of 212 species in SSBV (105 native species) and 221 in SB (96 native species)...
2017: PloS One
https://www.readbyqxmd.com/read/29140254/semiconductor-of-spinons-from-ising-band-insulator-to-orthogonal-band-insulator
#15
Tohid Farajollahpour, Seyed Akbar Jafari
We use ionic Hubbard model to study the effects of strong correlations on a two-dimensional semiconductor. The spectral gap in the limit where on-site interactions are zero is set by the staggered ionic potential, while in the strong interaction limit it is set by the Hubbard U. Combining mean field solutions of the slave spin and slave rotor methods we propose two interesting gapped phases in between: (i) The insulating phase before the Mott phase can be viewed as gapping a non-Fermi liquid state of spinons by the staggered ionic potential...
November 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29129317/the-genetic-legacy-of-the-indian-ocean-slave-trade-recent-admixture-and-post-admixture-selection-in-the-makranis-of-pakistan
#16
Romuald Laso-Jadart, Christine Harmant, Hélène Quach, Nora Zidane, Chris Tyler-Smith, Qasim Mehdi, Qasim Ayub, Lluis Quintana-Murci, Etienne Patin
From the eighth century onward, the Indian Ocean was the scene of extensive trade of sub-Saharan African slaves via sea routes controlled by Muslim Arab and Swahili traders. Several populations in present-day Pakistan and India are thought to be the descendants of such slaves, yet their history of admixture and natural selection remains largely undefined. Here, we studied the genome-wide diversity of the African-descent Makranis, who reside on the Arabian Sea coast of Pakistan, as well that of four neighboring Pakistani populations, to investigate the genetic legacy, population dynamics, and tempo of the Indian Ocean slave trade...
November 1, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29100089/de-novo-mutations-in-protein-kinase-genes-camk2a-and-camk2b-cause-intellectual-disability
#17
Sébastien Küry, Geeske M van Woerden, Thomas Besnard, Martina Proietti Onori, Xénia Latypova, Meghan C Towne, Megan T Cho, Trine E Prescott, Melissa A Ploeg, Stephan Sanders, Holly A F Stessman, Aurora Pujol, Ben Distel, Laurie A Robak, Jonathan A Bernstein, Anne-Sophie Denommé-Pichon, Gaëtan Lesca, Elizabeth A Sellars, Jonathan Berg, Wilfrid Carré, Øyvind Løvold Busk, Bregje W M van Bon, Jeff L Waugh, Matthew Deardorff, George E Hoganson, Katherine B Bosanko, Diana S Johnson, Tabib Dabir, Øystein Lunde Holla, Ajoy Sarkar, Kristian Tveten, Julitta de Bellescize, Geir J Braathen, Paulien A Terhal, Dorothy K Grange, Arie van Haeringen, Christina Lam, Ghayda Mirzaa, Jennifer Burton, Elizabeth J Bhoj, Jessica Douglas, Avni B Santani, Addie I Nesbitt, Katherine L Helbig, Marisa V Andrews, Amber Begtrup, Sha Tang, Koen L I van Gassen, Jane Juusola, Kimberly Foss, Gregory M Enns, Ute Moog, Katrin Hinderhofer, Nagarajan Paramasivam, Sharyn Lincoln, Brandon H Kusako, Pierre Lindenbaum, Eric Charpentier, Catherine B Nowak, Elouan Cherot, Thomas Simonet, Claudia A L Ruivenkamp, Sihoun Hahn, Catherine A Brownstein, Fan Xia, Sébastien Schmitt, Wallid Deb, Dominique Bonneau, Mathilde Nizon, Delphine Quinquis, Jamel Chelly, Gabrielle Rudolf, Damien Sanlaville, Philippe Parent, Brigitte Gilbert-Dussardier, Annick Toutain, Vernon R Sutton, Jenny Thies, Lisenka E L M Peart-Vissers, Pierre Boisseau, Marie Vincent, Andreas M Grabrucker, Christèle Dubourg, Wen-Hann Tan, Nienke E Verbeek, Martin Granzow, Gijs W E Santen, Jay Shendure, Bertrand Isidor, Laurent Pasquier, Richard Redon, Yaping Yang, Matthew W State, Tjitske Kleefstra, Benjamin Cogné, Slavé Petrovski, Kyle Retterer, Evan E Eichler, Jill A Rosenfeld, Pankaj B Agrawal, Stéphane Bézieau, Sylvie Odent, Ype Elgersma, Sandra Mercier
Calcium/calmodulin-dependent protein kinase II (CAMK2) is one of the first proteins shown to be essential for normal learning and synaptic plasticity in mice, but its requirement for human brain development has not yet been established. Through a multi-center collaborative study based on a whole-exome sequencing approach, we identified 19 exceedingly rare de novo CAMK2A or CAMK2B variants in 24 unrelated individuals with intellectual disability. Variants were assessed for their effect on CAMK2 function and on neuronal migration...
November 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29100086/genome-wide-ancestry-and-demographic-history-of-african-descendant-maroon-communities-from-french-guiana-and-suriname
#18
Cesar Fortes-Lima, Antoine Gessain, Andres Ruiz-Linares, Maria-Cátira Bortolini, Florence Migot-Nabias, Gil Bellis, J Víctor Moreno-Mayar, Berta Nelly Restrepo, Winston Rojas, Efren Avendaño-Tamayo, Gabriel Bedoya, Ludovic Orlando, Antonio Salas, Agnar Helgason, M Thomas P Gilbert, Martin Sikora, Hannes Schroeder, Jean-Michel Dugoujon
The transatlantic slave trade was the largest forced migration in world history. However, the origins of the enslaved Africans and their admixture dynamics remain unclear. To investigate the demographic history of African-descendant Marron populations, we generated genome-wide data (4.3 million markers) from 107 individuals from three African-descendant populations in South America, as well as 124 individuals from six west African populations. Throughout the Americas, thousands of enslaved Africans managed to escape captivity and establish lasting communities, such as the Noir Marron...
November 2, 2017: American Journal of Human Genetics
https://www.readbyqxmd.com/read/29092187/supermode-noise-suppression-with-mutual-injection-locking-for-coupled-optoelectronic-oscillator
#19
Jian Dai, Anni Liu, Jingliang Liu, Tian Zhang, Yue Zhou, Feifei Yin, Yitang Dai, Yuanan Liu, Kun Xu
The coupled optoelectronic oscillator (COEO) is typically used to generate high frequency spectrally pure microwave signal with serious sidemodes noise. We propose and experimentally demonstrate a simple scheme for supermode suppression with mutual injection locking between the COEO (master oscillator with multi-modes oscillation) and the embedded free-running oscillator (slave oscillator with single-mode oscillation). The master and slave oscillators share the same electrical feedback path, which means that the mutually injection-locked COEO brings no additional hardware complexity...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29091177/-arterial-prehypertension-in-slave-descendant-communities-in-southeast-bahia-state-brazil
#20
Vanessa Moraes Bezerra, Amanda Cristina de Souza Andrade, Danielle Souto de Medeiros, Waleska Teixeira Caiaffa
Arterial prehypertension is a precursor of arterial hypertension and a risk factor for cardiovascular diseases. Vulnerable populations are more prone to this condition due to difficulties in access to health services. A previous study in quilombola communities (descendants of African slaves) reported a high prevalence of arterial hypertension. The current study aimed to estimate the prevalence of arterial prehypertension in quilombolas and to assess associated factors. This was a cross-sectional population-based study in individuals 18 years and older...
October 26, 2017: Cadernos de Saúde Pública
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