141 research outputs found
Geochemistry Examination of Surface Sediments from Sadong River, Sarawak, Malaysia: Validation of ICP-OES Assessment of Selected Heavy Metals Selected Heavy Metals
No full textThe dependable analytical method for the assessment of heavy metals of interest (As, Al, Mn, Ca, Cd, Cu, Fe, Cr, Ni, Co, Zn and Pb) in sediments assembled in the Sadong
River, Sarawak state of Malaysia was reported. The total acid digestion extraction proceeded by ICP-OES (Inductively Coupled Plasma - Optical Emission Spectrometry) was used for this reason. The analytical method was validated as well as the implementation of
enough quality control activities in order to supply reliable information. Duplicate analysis was estimated in order to achieve the precision reproducibility conditions. To determine the accuracy of the results certified reference material was used. The limits of detection and quantification for all selected metals were below the acceptable limits in the examined sediment samples. The acquired dependable information could be used for evaluations of the correlation between anthropogenic activity in the aged and the geochemical
characteristics of the sediments
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Domesticating Human Rights on African Soil: Theorizing from Practice
No full textDr. Abena Ampofoa Asare is Associate Professor of Africana Studies and History at Stony Brook University. Her research and writing span questions of human rights, citizenship and transformative justice in Africa and the African diaspora. Her work can be found in The Radical Teacher, The International Journal of Crime, Justice and Social Democracy, African Arguments, and The Los Angeles Review of Books, among other places. She is the author of Truth Without Reconciliation: A Human Rights History of Ghana (University of Pennsylvania, 2018) which was named a Choice Outstanding Academic Title. In 2018-2019, she will be Scholar-in-Residence at the New York Public Library’s Schomburg Center for Research in Black Culture.In the 70th anniversary year of the Universal Declaration of Human Rights (UDHR), this paper proposes an alternative perspective on the progress of the international human rights regime inaugurated in 1948. Focusing on the multiple ways that international human rights discourse is deployed in diverse African locales throughout the late twentieth and early twenty-first centuries, this paper launches the concept of domestication as a way to apprehend the variety of human rights practice. In so doing, this paper challenges definitions of human rights progress that focus on expanding global consensus, and instead theorizes a future for human rights discourse that is rooted in difference, particularly the divergent strategies and ideologies of diverse local stakeholders.La
Disaster Preparedness for the Elderly and the Disabled
No full textUtilizing a community-based exchange network to provide assistance inclusive of our seniors and the disabledFall 2013Accompanied by video fil
Smallholder Farm Household Labor Allocation And Idiosyncratic Shocks In Southern Ghana
No full textMost studies investigating the role of uncertainty in smallholder decision making have focused on either shocks or some notion of risk based on variability. When analyzing household production behavior, considering only yield variability ignores the potential effect of shocks on yield variability, and input allocation decisions. In this thesis, both shocks and yield risk are considered. We use a two-period expected utility model to analyze smallholder labor allocation sequentially. The data for this paper were obtained from a panel survey conducted in southern Ghana from 1996 to 1997. The approach used in this paper allows the incorporation of temporal uncertainty by introducing the concepts of ex ante and ex post yield risk which were briefly discussed by Sandmo (1970) and Holt et al. (1992). We find evidence of sequential dependence of labor decisions. Labor allocation in the planting period of the season helped explain labor allocation in the subsequent preharvest period of the season. Damage to stored crops in the planting period and negative health events experienced by the household during the second part of the previous season are important for ex post labor allocation. Household ex post labor allocation responds positively to ex post yield risk. Households shift labor to non-farm activities in response to ex post yield risk in order to smooth their incomes
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Surface texture and optical properties of crystalline silicon substrates
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Fashina, A. A., K. K. Adama, O. K. Oyewole, V. C. Anye, J. Asare, M. G. Zebaze Kana, and W. O. Soboyejo. "Surface texture and optical properties of crystalline silicon substrates." Journal of Renewable and Sustainable Energy 7, no. 6 (2015): 063119. and may be found at http://dx.doi.org/10.1063/1.4937117This paper presents the results of an experimental study of the effects of surface texture on the optical and light trapping properties of silicon wafers. Surface texture is controlled by anisotropic etching with potassium hydroxide (KOH) and isopropyl alcohol (IPA) solutions. The anisotropic etching of (001) crystalline silicon wafers is shown to result in the formation of {111} pyramidal facets on the surfaces of the wafers. A combination of profilometry, optical microscopy, scanning electron microscopy, and atomic force microscopy is used to study the effects of KOH/IPA etching on the morphology and roughness of the textured surfaces. The results show that IPA concentration has the strongest effect on the surface roughness of (001)-single crystal crystals at temperatures up to 80 °C. Above this value, evidence of temperature-induced cracking was revealed on the silicon substrate. The best volume concentration ratio of KOH:IPA is also found to be 2:4. The implications of the study are discussed for the design of light trapping in silicon solar cells
Keynote Panel
No full textAnna Nti-Asare-Tubbs is a writer and PhD student. She holds a Masters in Multidisciplinary Gender Studies from the University of Cambridge, and a Bachelors in Medical Anthropology from Stanford University. Anna\u27s research, writing, and talks are centered on gender and race issues in the US, especially as these relate to youth, politics, and education. She is currently pursuing her PhD in Sociology at the University of Cambridge as a Bill and Melinda Gates scholar. She recently accepted her first book deal and she is also the First Partner of Stockton.
Tanya Golash-Boza is a Professor of Sociology at the University of California, Merced. She has published five sole-authored books and over 50 articles and book chapters. Tanya Golash-Boza’s scholarship ranges from issues of race and identity in Peru to human rights to immigration policy and deportation. Her latest book, Deported: Immigrant Policing, Disposable Labor and Global Capitalism (New York University Press, 2015), was awarded the Distinguished Contribution to Research Book Award from the Latino/a Studies Section of the American Sociological Association. It explains mass deportation in the context of the global economic crisis. Her other books include Due Process Denied (Routledge, 2012), Immigration Nation (Paradigm, 2012), and Yo Soy Negro: Blackness in Peru (University Press of Florida, 2011). Her textbook, Race and Racisms: A Critical Approach (Oxford University Press, 2015; 2018) provides a critical overview of contemporary race scholarship. Professor Golash-Boza shares her insights into faculty productivity and well-being through workshops and her blog, Get a Life, PhD. For this and other outreach work, Professor Golash-Boza was awarded the UC Merced Senate Faculty Award for Distinguished Scholarly Public Service.
Zulema Valdez is Associate Vice Provost for the Faculty and Professor of Sociology at UC Merced. Grounded in theories of intersectionality, her areas of research and teaching expertise include the study of immigrant entrepreneurship, undocumented students in higher education, and health disparities and food access in low-resource immigrant and ethnic minority communities. Professor Valdez has received fellowship and grant support from the Ford Foundation, the National Science Foundation, and the Social Science Research Council. Her work has been published in many academic journals and edited volumes. She is the author of two books, The New Entrepreneurs: How Race, Class and Gender Shape American Enterprise (Stanford, 2011) and Entrepreneurs and the Search for the American Dream (Routledge, 2015). In her efforts to advance social justice and engage with the larger community, she volunteers as facilitator for the Insight Garden Program at Chowchilla Women’s Prison and serves on the advisory board for the American Bar Foundation’s network for justice research initiative. Valdez is currently developing a new area of research on the “future-present” of climate change
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Micro-wrinkling and delamination-induced buckling of stretchable electronic structures
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Oyewole, O. K., D. Yu, Jing Du, J. Asare, D. O. Oyewole, V. C. Anye, A. Fashina, M. G. Zebaze Kana, and W. O. Soboyejo. "Micro-wrinkling and delamination-induced buckling of stretchable electronic structures." Journal of Applied Physics 117, no. 23 (2015): 235501. and may be found at http://dx.doi.org/10.1063/1.4922665This paper presents the results of experimental and theoretical/computational micro-wrinkles and buckling on the surfaces of stretchable poly-dimethylsiloxane (PDMS) coated with nano-scale Gold (Au) layers. The wrinkles and buckles are formed by the unloading of pre-stretched PDMS/Au structure after the evaporation of nano-scale Au layers. They are then characterized using atomic force microscopy and scanning electron microscopy. The critical stresses required for wrinkling and buckling are analyzed using analytical models. The possible interfacial cracking that can occur along with film buckling is also studied using finite element simulations of the interfacial crack growth. The implications of the results are discussed for potential applications of micro-wrinkles and micro-buckles in stretchable electronic structures and biomedical devices
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Adhesion in flexible organic and hybrid organic/inorganic light emitting device and solar cells
No full textThis article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Yu, D., O. K. Oyewole, D. Kwabi, T. Tong, V. C. Anye, J. Asare, E. Rwenyagila et al. "Adhesion in flexible organic and hybrid organic/inorganic light emitting device and solar cells." Journal of Applied Physics 116, no. 7 (2014): 074506. and may be found at http://dx.doi.org/10.1063/1.4892393This paper presents the results of an experimental study of the adhesion between bi-material pairs that are relevant to organic light emitting devices, hybrid organic/inorganic light emitting devices, organic bulk heterojunction solar cells, and hybrid organic/inorganic solar cells on flexible substrates. Adhesion between the possible bi-material pairs is measured using force microscopy (AFM) techniques. These include: interfaces that are relevant to organic light emitting devices, hybrid organic/inorganic light emitting devices, bulk heterojunction solar cells, and hybrid combinations of titanium dioxide (TiO2) and poly(3-hexylthiophene). The results of AFM measurements are incorporated into the Derjaguin-Muller-Toporov model for the determination of adhesion energies. The implications of the results are then discussed for the design of robust organic and hybrid organic/inorganic electronic devices
Genetic Susceptibility and Caspase Activation in Mouse and Human Macrophages Are Distinct for Legionella longbeachae and L. pneumophila
No full textABSTRACT
is the predominant cause of Legionnaires' disease in the United States and Europe, while
is the common cause of the disease in Western Australia. Although clinical manifestations by both intracellular pathogens are very similar, recent studies have shown that phagosome biogeneses of both species within human macrophages are distinct (R. Asare and Y. Abu Kwaik, Cell. Microbiol., in press). Most inbred mouse strains are resistant to infection by
, with the exception of the A/J mouse strain, and this genetic susceptibility is associated with polymorphism in the
allele and flagellin-mediated early activation of caspase 1 and pyropoptosis in nonpermissive mouse macrophages. Here, we show that genetic susceptibility of mice to infection by
is independent of allelic polymorphism of
replicates within bone marrow-derived macrophages and in the lungs of A/J, C57BL/6, and BALB/c mice, while
replicates in macrophages in vitro and in the lungs of the A/J mouse strain only. Quantitative real-time PCR studies on infected A/J and C57BL/6 mouse bone marrow-derived macrophages show that both
and
trigger similar levels of
expression, but the levels are higher in infected C57BL/6 mouse macrophages. In contrast to
,
has no detectable pore-forming activity and does not activate caspase 1 in A/J and C57BL/6 mouse or human macrophages, despite flagellation. Unlike
,
triggers only a modest activation of caspase 3 and low levels of apoptosis in human and murine macrophages in vitro and in the lungs of infected mice at late stages of infection. We conclude that despite flagellation, infection by
is independent of polymorphism in the
allele and
does not trigger the activation of caspase 1, caspase 3, or late-stage apoptosis in mouse and human macrophages. Neither species triggers caspase 1 activation in human macrophages
The Relationship Between Nurses’ Emotional Intelligence Skills and Positive Mental Health in capitals and regional hospitals
No full textMaģistra darba tēma - Emocionālās inteliģences ietekme uz garīgo veselību māsu praksē valstspilsētas un reģionu slimnīcās. Tēmas aktualitāte - emocionālā inteliģence ir svarīga māsām psiholoģiskās labklājības uzlabošanai. Darba mērķis - noteikt saistību starp māsu emocionālās inteliģences prasmēm un garīgo veselību slimnīcās valstspilsētās un reģionos. Pētniecības uzdevumi - izpētīt, kādā vecumu grupā, ar kādu darba stāžu, ar kādu māsu izglītību un kādā slimnīcu nodaļā māsu emocionālā inteliģence pozitīvāk ietekmē garīgo veselību. Pētniecības metode - kvantitatīvs, neeksperimentāls salīdzinošs šķērsgriezuma pētījums. Pētniecības instruments - darba autores izstrādāta, strukturēta aptaujas anketa. Pētījuma rezultāti - pētījuma hipotēze (māsām, kuras praktizē valstspilsētas slimnīcās ir augstāks emocionālās inteliģences līmenis un pozitīvāka garīgā veselība) ir daļēji pierādīta, jo valstspilsētu slimnīcu māsām ir statistiski nozīmīgi augstāks emocionālās inteliģences līmenis salīdzinājumā ar māsām, kuras strādā citās slimnīcās (p=0,038), kas daļēji pierāda izvirzīto pētījuma hipotēzi, bet garīgās veselības līmenī būtisku starpību starp grupām nekonstatēja (p=0,754), kas norāda, ka izvirzītais hipotēzes apgalvojums ar esošiem datiem netika pierādīts.Master's thesis topic - The Relationship Between Nurses’ Emotional Intelligence Skills and Positive Mental Health in capitals and regional hospitals. Topic relevance - emotional intelligence is important for nurses to improve their psychological well-being. The aim of the work is to determine the relationship between nurses' emotional intelligence skills and mental health in hospitals in the country's cities and regions. Research tasks - to investigate in which age group, with what length of service, with what nursing education, and in which hospital department does the emotional intelligence of nurses have a more positive impact on mental health. Research method - quantitative, non-experimental comparative cross-sectional study. Research instrument - a structured questionnaire developed by the author of the work. Research results - the research hypothesis (nurses practicing in city hospitals have a higher level of emotional intelligence and more positive mental health) has been partially proven, as nurses from city hospitals have a statistically significantly higher level of emotional intelligence compared to nurses working in other hospitals (p=0.038), which partially proves the proposed research hypothesis, but no significant difference was found between the groups in the level of mental health (p=0.754), which indicates that the proposed hypothesis statement was not proven with the existing data
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