Digital Commons Network^™

Electrochemical Nano-Patterning Of Brass For Stable And Visible Light-Induced Photoelectrochemical Water Splitting, Dina S. Eissa, Shimaa S. El-Hagar, Nageh Khalaf Allam

Faculty Journal Articles

A novel propitious nano-patterned brass oxide nanowires were fabricated via controlled anodization of α-brass in aqueous electrolytes at room temperature. X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), and x-ray photoelectron spectroscopy (XPS)techniques were used to investigate the morphology, structure, and composition of the fabricated materials. The morphology of the resulted structures was found to depend on the concentration of the sodium bicarbonate used for anodization as well as the post treatment. The XRD analysis confirmed the existence of both ZnO and CuO. The XPS results suggest the formation of CuZnO nanowires. The fabricated nanowires showed exceptional optical activity …

Electrospun Lead-Free All-Inorganic Double Perovskite Nanofibers For Photovoltaic And Optoelectronic Applications, Ayat N. El-Shazly, Marwan Y. Rezk, Kareem M. Gameel, Nageh Khalaf Allam

Faculty Journal Articles

Organic-inorganic hybrid perovskite compounds are currently the archetypal materials for high performance photovoltaic (PV) and optoelectronic devices. However, the remaining bottlenecks preventing their large-scale production are their environmental/thermal instability and lead toxicity. Herein, we demonstrate a novel approach to synthesize single-phase electrospun Cs2SnIxCl6-x double perovskites with varying halide content (I, Cl, or mixed I/Cl) as active materials for potential application in perovskite solar cells (PSCs). The X-ray photoelectron spectroscopy and Raman spectroscopy analyses indicated the in situ formation of graphene oxide (GO) during the annealing process. The GO layer was found to enhance the optical properties and thermal stability of …

Experimental And Density Functional Theory Insights Into The Effect Of Withdrawing Ligands On The Fluorescence Yield Of Ru (Ii)-Based Complexes, Basant A. Ali, Nageh Khalaf Allam

Faculty Journal Articles

The quality of emission spectra of metal complexes gives good insights into their performance in many optoelectronic applications. Herein, the effect of the number and position of various ligand structures on the emission spectra of Ru bipyridine complexes was studied. Specifically, the use of a different number of withdrawing groups (COOH) was investigated in detail. The complexes were first investigated using density functional theory (DFT) and time-dependent DFT calculations and then confirmed experimentally. The bandgap energy, reactivity, emission spectra and Stokes shift were found to depend on the number and position of the withdrawing groups attached to the Ru(bpy)22+ complexes. …

The Dynamics Of Re-Introduced Kihansi Spray Toad Nectophrynoides Asperginis And Other Amphibians In Kihansi Gorge, Udzungwa Mountains, Tanzania, Wilirk Ngalason, Cuthbert L. Nahonyo, Charles A. Msuya

Tanzania Journal of Science

The dynamics of the reintroduced Kihansi spray toad Nectophrynoides asperginis and other amphibian species that occur in the Kihansi gorge, Udzungwa Mountains were studied. The area is a home for the endemic toad that became extinct before individuals bred in captivity were reintroduced. Previous studies on the biology of amphibians conducted in the gorge focused on a few aspects but none has dealt with the dynamics of both the reintroduced Kihansi spray toad (KST) and other amphibians. Information on species richness and the abundance of amphibian species occurring in the gorge have not been dealt with in depth. Time-constrained audio-visual …

Research Work And Conservation Initiatives In The Kihansi Catchment Ecosystem, Tanzania, Cl Nahonyo

Tanzania Journal of Science

Keynote Address  for the Scientific Conference on Research and Conservation Initiatives in the Kihansi Catchment Ecosystem: Successes, Challenges and Way forward held at the National Carbon Monitoring Centre (NCMC), Sokoine University of Agriculture (SUA) on 24 – 27 July 2017.

Affective Misattribution Following Memory Decisions Does Not Transfer To Interleaved Items, David Grybinas

Arts & Sciences Graduate Student Theses and Dissertations

The outcomes of memory search appear to have affective consequences. For instance, during recognition memory tests, concluding that a retrieval probe is from a prior study period (‘old’) leads to higher pleasantness ratings for the probe than concluding it is novel (‘new”). Grybinas, Kantner, and Dobbins (2019) explained this and related findings via a Confirmation of Search (COS) hypothesis that assumes that the affective consequences of successful versus failed episodic retrieval are misattributed to probes used to elicit memory search. While these affective misattributions clearly occur for the memory probes themselves (within-item misattribution), social psychological research has previously shown that …

Internet Screen Time And Related Factors: Threat To Adolescence In Indonesia, Kristiana Kurniasanti, Karina Firdaus, Hans Christian, Tjhin Wiguna, Martina Wiwie, Raden Ismail

Makara Human Behavior Studies in Asia

The widespread use of the internet has produced both positive and negative impacts. Among the latter is internet addiction (IA). The worldwide prevalence of this addiction has been measured at approximately 6%, although the specific prevalence in Indonesia is uncertain because no validated instrument to measure IA has been developed for the Indonesian context. Hence, screen time was used in this study as an alternative measure of the magnitude of IA in Indonesia, where more than 6 hours is considered risk for IA. Researchers measured internet screen time (IST) and potential related factors in adolescents. The subjects of this cross-sectional …

Percieved Threat Of Homosexuals In Indonesia: Construct, Measurement, And Correlates, Susana Tjipto, Elisabeth Haksi Mayawati, Allan B. I. Bernardo

Makara Human Behavior Studies in Asia

In Indonesia, homonegativity still exists and acts of violence against homosexual groups still happen, but there has not been much research on aspects of this homonegativity beyond inquiring into general attitudes towards homosexuals. This study has several aims: to qualitatively explore dimensions of perceived threat, to develop a measure of perceived threat of homosexuals, and to study some correlates and perceived threat of homosexuals in Indonesian samples. We used a mixed-method approach (qualitative-quantitative) to gather the data. Study 1 is a qualitative study that seeks to identify expressions and dimensions of perceived threat of homosexuals using thematic analysis of responses …

Connectivity Differences Between Gulf War Illness (Gwi) Phenotypes During A Test Of Attention, Tomas Clarke, Jessie Jamieson, Patrick Malone, Rakib U. Rayhan, Stuart Washington, John W. Vanmeter, James N. Baraniuk

Department of Mathematics: Faculty Publications

One quarter of veterans returning from the 1990–1991 Persian Gulf War have developed Gulf War Illness (GWI) with chronic pain, fatigue, cognitive and gastrointestinal dysfunction. Exertion leads to characteristic, delayed onset exacerbations that are not relieved by sleep. We have modeled exertional exhaustion by comparing magnetic resonance images from before and after submaximal exercise. One third of the 27 GWI participants had brain stem atrophy and developed postural tachycardia after exercise (START: Stress Test Activated Reversible Tachycardia). The remainder activated basal ganglia and anterior insulae during a cognitive task (STOPP: Stress Test Originated Phantom Perception). Here, the role of attention …

Penguasaan Konsep Fluida Statis Siswa Sma, Zaitul Harizah, Sentot Kusairi, Eny Latifah

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to analyze the mastery of students’ concepts in static fluid material. The subjects in this study were students of class XII IPA 1 MAN 1 Pamekasan which consist of 40 students. The study was conducted using a survey method and used a multiple choice test with open reasons consisting of 9 items. The results showed the mastery of students' concepts was low. The average acquisition score of students' concept mastery was 33,06. The most students’ difficult are found in Archimedes’ Law. Students haven’t mastered the concept of buoyancy so well, so students’ couldn’t answers correctly the questions.

Expressive Writing Untuk Keterampilan Mengelola Emosi Marah Siswa, Nurhayani Maudi, Triyono Triyono, Dany M. Handirini

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to develop a guide to training anger management skills using the expressive writing method for junior high school students. The method used in this study is a research and development model. The trial subjects in this study consisted of instructional media experts, guidance and counseling expertsand prospective users or school counselors. the instruments used are in the form of expert assessment instruments and prospective user assessment instruments. The results of the trial consisted of quantitative data and qualitative data. Data analysis techniques in this research and development are descriptive analysis techniques. The results of the assessment of …

Peningkatan Penguasaan Konsep Siswa Sma Tentang Hukum Gravitasi Newton Melalui Modeling Instruction, Zulfi Farida Alfianti, Sutopo Sutopo, Sunaryono Sunaryono

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

The purpose of this study was to determine the increase in mastery of student concepts in Newton's Gravity Law material through Modeling Instruction. This research model uses a Mixed Method. The subjects of this research were 60 students in one of the schools in Batu city in grade X Science. Data obtained through statistical analysis of the value of the pretest and posttest. The results of the study show that teaching using Modeling Instruction can increase mastery of concepts by 0.65 with the medium category.

Miskonsepsi Asam Basa Berbasis Multipel Representasi Pada Lintas Jenjang Pendidikan, Isnaini Yunitasari, Hayuni Retno Widarti, Nazriati Nazriati

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to describe acid-base misconceptions across levels of education using multiple representation based diagnostic tests. The research method is quantitative descriptive. Analysis process of misconceptions using modified CRI. The validity of diagnostic tests is between 0.197 to 0.798, and reliability is 0.753 and 0.626. The research subjects were 224 people consisting of class XI students, class XII students, second semester students, and 4th semester students. The results showed that the average percentage of acid-base misconceptions in class XI students to 4th semester students respectively was 50.30%; 56.84%; 53.81%; and 41.07%. Misconceptions that often occur in students and students …

Pengaruh Model Pembelajaran Inkuiri Terbimbing Terhadap Literasi Sains Siswa Kelas V Sd, Ranti Nur Fa’Idah, Supriyono Koes Handayanto, Susriyati Mahanal

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

Scientific literacy is a skill that is very important and must be possessed by students. A person with good scientific literacy will be able to survive in the XXI century. In the learning process students are weak in interpreting information so that students have difficulty or cannot make conclusions. Scientific literacy by using initial ability moderator variables in the high category and low category and their interactions in fifth grade students of SD Tanjung Rejo 2 Malang. The results of the pretest and posttest were tested differently with the help of SPSS. The results showed there were significant differences in …

Ego Depletion And Its Effect On Auditors’ Judgment And Decision-Making Quality, Lufi Yuwana Mursita, Nurul Mustafida, Rizki Rachmadia

Jurnal Akuntansi dan Keuangan Indonesia

This study aimed to examine the determinants of ego depletion and its effect on judgment and decision-making (JDM) quality. Auditing is one of the professions vulnerable to ego depletion, which is a temporary state of lack of cognitive resources to self-control caused by physical or psychological fatigue. Data were collected via online survey on 121 auditors in Indonesia who were selected by convenience sampling. The results showed that interpersonal conflict positively affected ego depletion. In line with ego depletion theory, the results supported previous research that ego depletion negatively affected JDM quality. Interestingly, this research also found that the level …

Potensi Model Inkuiri Terbimbing Dipadu Edutainment Terhadap Penguasaan Konsep Siswa Smp, Shoimatun Febriyani, Hadi Suwono, Ibrohim Ibrohim

Jurnal Pendidikan: Teori, Penelitian, dan Pengembangan

This study aims to investigate the potencial of guided inquiry models edutainment combined toward the mastery concepts. The design of this research use quasi experiment. The population of this studdy was all the second grades students of SMP N 18 Malang while the sampling of the study was 8G, 8H dan 8E. The used instrument was 20 multiple choice to measure the mastery concepst of students. The result of the study was guided inquiry models edutainment combined potencially can improve mastery of concepts students.

Indonesia Natural Mineral For Heavy Metal Adsorption: A Review, Grandprix T. M. Kadja, Moh Mualliful Ilmi

Journal of Environmental Science and Sustainable Development

Indonesia has abundant mineral resources used as natural adsorbent materials for the absorption of heavy metal. Among these are natural zeolites, clay, and ashes. These natural materials showed high performance adsorption capacity with respects to their low cost and high availability. Several research reports had been published for studying the performance of the natural materials as adsorbent of several heavy metals i.e., Hg, Pb, Fe, Cd, Cr, Zn, Ni, and Cu by examining the effect of various factors, including pH, contact time, initial concentration, temperature, and dosage. Furthermore, to determine the adsorption rate, mechanism, and efficiency of natural materials in …

Characteristics Of Habitat, Distribution, And Diversity Of Anopheles Spp In Kemelak Bindung Langit Village, Ogan Komering Ulu Regency, South Sumatra, Giri Maretasari, Yuanita Windusari, Syafrina Lamin, Laila Hanum, Dwi Septiawati

Journal of Environmental Science and Sustainable Development

Malaria is an infectious disease caused by Plasmodium andis transmitted through the bite of a female Anopheles vector. Ogan Komering Ulu (OKU) is a district in South Sumatra that is endemic to malaria. The study aims to determine habitat type, environmental factors that influence larvae development, and distribution of Anopheles larvae. The experiment was conducted from January to February 2019 in the Kelurahan Kemelak Bindung Langit, OKU. Species identification was carried out in the Entomology Laboratory, Baturaja Health Research and Development Center, OKU. Sampling locations were determined based on field observations, through simple purposive sampling. Identification of mosquito larvae which …

Maintaining Economic Stabilization In Indonesia And South Korea Through Digital Farming, Aprillia Christianawati

Journal of Environmental Science and Sustainable Development

Digital farming is a type of digital economy that cannot be separated from essential elements, such as data availability and farmers themselves. Digital farming is found easily in many developed or agricultural countries, such as southern Europe and Brazil, nor to Indonesia and South Korea. However, Indonesia and South Korea experienced internet utilization and agricultural land area discrepancies which come to similar result, still developing sustainable agriculture. Thus, subjects of the study are Indonesia and South Korea due to their location in the Asian continent and similar history as developing countries in the past. Using farmer households and land agricultural …

Behind The Trash: A Qualitative Research On How Trash Pickers In Cirendeu Area Contribute To Recycling, Mana Kakinuma

Journal of Environmental Science and Sustainable Development

Trash is one of the most serious environmental issues. People strive to solve the problem with reducing the use of plastic and figuring out the method to recycle efficiently; however, the story of trash pickers is barely on the topic. The problems are the ignorance and underestimation of the society. People should consider the integrated solution for both the environment and those trash pickers. The ideal solution would be formalizing waste disposal system, officially hire trash pickers for their stable life, and let their children access to education for brighter future. This discussion will examine the importance of understanding the …

Magnetic Field Effects On Lithium Ion Batteries, Kevin Mahon

Theses

The Nobel Prize in Chemistry 2019 was just recently awarded to John B. Goodenough, M. Stanley Whittingham, and Akira Yoshino for the development of lithium-ion batteries. Lithium-ion batteries have seen use in many different industries and applications such as in portable devices, power grids, and electric vehicles. As lithium-ion batteries become more commonplace they will need to be modeled more extensively. The magnetic field effect on lithium-ion batteries has not been studied significantly since they were first discovered.

Modeling these batteries is still difficult because of the many complexities of the operation of a battery. Lithium-ion batteries are commonly modeled …

To Disclose Or Not To Disclose? Self-Disclosure Of Mental Health In The Workplace, Samantha Margaret Reynolds

Dissertations and Theses

When making the decision to disclose a mental illness, individuals may be met with a number of factors that impact disclosure. This study examines the relationship between self-stigma, psychological safety, social support and self-disclosure of mental illness in the workplace. The present study surveyed 756 participants and found a positive relationship between stigma and self-disclosure as well as a positive relationship between social support and self-disclosure. For work outcomes, there was a negative relationship between both job satisfaction and productivity in relation to self-disclosure. This study potentiates the antecedents and consequences of self-disclosure of mental illness and how it impacts …

E-Journals Usage Among Faculty Members And Students: A Survey, Manjunatha G, Sampath Kumar B T

Library Philosophy and Practice (e-journal)

Abstract

The main aim of the study is to know the use of e-journals among the faculty members and students in engineering college libraries. The results of the study show that the students and faculty members who participated in this survey are aware of e-journals and majority of the respondents used e-journals for study and project dissertation work. Most of the faculty members and students used e-journals in libraries. The survey respondents opined that the e-journals are easy to access and use as compared to print journals. Thus the study recommends that the Engineering college libraries should focus more in …

Dental Professionals Occupational Noise Exposure And Its Auditory And Non-Auditory Effects, Alexis Frees

Theses

The purpose of this study was to assess noise exposure and its auditory and non-auditory effects on workers in five clinical departments in the School of Dental Medicine at Rutgers Biomedical Health Sciences Campus in Newark, New Jersey. The study included environmental noise level measurement, dental instrument sound level measurement, personal noise dosimetry and a questionnaire survey to assess non-auditory effects. Octave band analysis of environmental noise levels showed that they are slightly above the standard noise criteria for clinics, and measurements from six dental instruments confirm that they contribute higher sound pressure levels at the frequencies of 1000, 2000, …

Micro Pipes – A Portable Integrated Platform For Electrochemical Sensing Using Essence Architecture, Hansin Kim

Theses

The field of microfluidics and lab-on-chip (LOC) technology has the potential to have a truly transformative effect in biological engineering. This includes areas such as single-cell analysis, environmental monitoring, regenerative medicine, and point-of-care diagnostics. Yet despite being the subject of intense research over the past two decades, LOC devices have not been widely adopted. It is increasingly evident that there is a need for an effective and adaptable integration strategy to realize the potential of this technology.

Presented in this thesis is a design for a chip-to-world interface that aims to improve integration while maintaining cost-efficiency and ease of fabrication. …

Impact Of Stirrer Speed And Media Type-Loading On The Breakage Kinetics During Wet Stirred Media Milling Of Griseofulvin, Nathaniel Parker

Theses

The aim of this study is to investigate the impact of stirrer speed (2000-4000 rpm) and bead loading (~20-60%) on the breakage kinetics-energy consumption during milling of griseofulvin, a poorly soluble drug, and compare the performance of crosslinked polystyrene (CPS) beads with that of yttrium-stabilized zirconia (YSZ) beads. Laser diffraction, SEM, viscometry, and XRPD were used for characterization. A microhydrodynamic model was used to interpret the breakage kinetics. An increase in stirrer speed led to faster breakage due to more frequent and forceful CPS bead-bead collisions. Despite causing slight decrease in maximum contact pressure, an increase in CPS bead loading …

A Framework For The Development Of A Global Standardised Marine Taxon Reference Image Database (Smartar-Id) To Support Image-Based Analyses, Kerry L. Howell, Jaime S. Davies, A. Louise Allcock, Andreia Braga-Henriques, Pal Buhl-Mortensen, Marina Carreiro-Silva, Carlos Dominguez-Carrió, Jennifer M. Durden, Nicola L. Foster, Chloe A. Game, Becky Hitchin, Tammy Horton, Brett Hosking, Daniel O.B. Jones, Christopher Mah, Marchais C Laguionie, Lenaick Menot, Telmo Morato, Tabitha R.R. Pearman, Nils Piechaud, Rebecca E. Ross, Henry A. Ruhl, Hanieh Saeedi, Paris V. Stefanoudis, Gerald H. Taranto, Michael B. Thompson, James R. Taylor, Paul Tyler, Johanne Vad, Lissette Victorero, Rui P. Vieira, Lucy C. Woodall, Joana R. Xavier, Daniel Wagner

School of Biological and Marine Sciences

No abstract provided.

Cocaine: A Provoking Risk Factor In Venous Thromboembolism, Daniel Griffin, Suji Cha

Student Publications

Cocaine is a highly addictive recreational drug that is a well-known cause of a variety of disease processes such as stroke, myocardial infarction, and even sudden cardiac death. In current literature, venous thrombosis secondary to cocaine abuse remains under-examined, while the harmful effects of the drug within the arterial vasculature are well-studied and understood. Our case presents a patient who was found to have a large pulmonary embolism and pulmonary infarction after several days of cocaine abuse. This report serves to raise awareness of a potentially life-threatening effect of this drug and to encourage prompt diagnosis and treatment of cocaine-induced …

Social And Psychological Factors Associated With Health Care Transition For Young Adults Living With Sickle Cell Disease, Dora L. Clayton-Jones, Nadine Matthie, Marsha Treadwell, Joshua Field, Amy Mager, Rachel Sawdy, Safiya George Dalmida, Cynthia Leonard, Kathryn L. Koch, Kristin Haglund

College of Nursing Faculty Research and Publications

Introduction: Due to advances in disease management, mortality rates in children with sickle cell disease (SCD) have decreased. However, mortality rates for young adults (YA) increased, and understanding of social and psychological factors is critical. The aim of this study was to explore factors associated with health care transition experiences for YA with SCD.

Method: This was a qualitative descriptive study. A 45-minute semistructured interview was conducted with 13 YA (M = 21.5 years, SD = 1.73).

Results: Results suggest that social and psychological factors and self-management experiences influence health care transition. Eight themes emerged: “need for accessible support”; “early …

Bridge Devices For Wireless Projection Of Vehicle Operating Systems, Sriram Viswanathan, Eugene Koh, Haris Ramic, Mickey Kataria, Zhen Yu Song

Defensive Publications Series

Vehicles may provide an infotainment experience that is hosted by a head unit or other computing device. The head unit may execute a native operating system that provides an execution environment in which an operating system client may execute to support execution of a different operating system hosted by another computing device (e.g., a smartphone, laptop computer, tablet computer, etc.). The head unit may require that the computing device physically interconnect with the head unit as the head unit may not support wireless connections (or only support limited wireless connections in the form of bandwidth limited connection – e.g., personal …