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Articles 73381 - 73410 of 1114200
Full-Text Articles in Entire DC Network
Characteristics Of Liquid Products From Spirulina Platensis Pyrolysis Under Microwave Irradiation With Activated Carbon Additive, Mohammad Mirza Yuniar Romaz, Sukarni Sukarni, Retno Wulandari
Characteristics Of Liquid Products From Spirulina Platensis Pyrolysis Under Microwave Irradiation With Activated Carbon Additive, Mohammad Mirza Yuniar Romaz, Sukarni Sukarni, Retno Wulandari
Journal of Mechanical Engineering Science and Technology (JMEST)
Global energy consumption has surged due to the population's rapid growth, leading to a switch to using renewable and clean energy. Among various strategies for developing renewable and clean energy, biomass pyrolysis emerged as attractive, and microwave irradiation pyrolysis is a prominent technique. This research aims to determine the ideal parameters for microwave-assisted pyrolysis of Spirulina platensis (SP) microalgae in order to produce high-value liquid products with the addition of activated carbon (AC) additives. Liquid bio-oil products were characterized concerning their calorific value, chemical bonds, and thermal stability. This research also investigates product distribution as a function of AC loading. …
Friction Modeling Of Composite Brake Pads With Ulin Wood Powder (Eusideroxylon Zwageri), Muhammad Rezki Fitri Putra, Hajar Isworo, Muhamad Noor Yasin, Rachmat Subagyo
Friction Modeling Of Composite Brake Pads With Ulin Wood Powder (Eusideroxylon Zwageri), Muhammad Rezki Fitri Putra, Hajar Isworo, Muhamad Noor Yasin, Rachmat Subagyo
Journal of Mechanical Engineering Science and Technology (JMEST)
This study investigates the performance of composite brake pads made of Ulin (Eusideroxylon zwageri) sawdust using simulation modeling, focusing on the pressure distribution, frictional stress, and contact state in five brake pad designs (DS0 to DS4). The brake pad designs used U-shaped grooves to improve cooling efficiency and debris removal. The results show that DS1 and DS2 exhibit the most uniform pressure distribution, with maximum values of 0.045 MPa and 0.048 MPa, respectively. DS1 recorded the highest peak frictional stress at 2.53 × 10-8 MPa, while DS2 showed consistent stress stability, reducing the possibility of uneven wear. DS3 achieved a …
Opa1 And Disease-Causing Mutants Perturb Mitochondrial Nucleoid Distribution, J. Macuada, I. Molina-Riquelme, G. Vidal, N. Pérez-Bravo, C. Vásquez-Trincado, G. Aedo, D. Lagos, P. Yu-Wai-Man, R. Horvath, T. J. Rudge, B. Cartes-Saavedra, V. Eisner
Opa1 And Disease-Causing Mutants Perturb Mitochondrial Nucleoid Distribution, J. Macuada, I. Molina-Riquelme, G. Vidal, N. Pérez-Bravo, C. Vásquez-Trincado, G. Aedo, D. Lagos, P. Yu-Wai-Man, R. Horvath, T. J. Rudge, B. Cartes-Saavedra, V. Eisner
Department of Pathology, Anatomy, and Cell Biology Faculty Papers
Optic atrophy protein 1 (OPA1) mediates inner mitochondrial membrane (IMM) fusion and cristae organization. Mutations in OPA1 cause autosomal dominant optic atrophy (ADOA), a leading cause of blindness. Cells from ADOA patients show impaired mitochondrial fusion, cristae structure, bioenergetic function, and mitochondrial DNA (mtDNA) integrity. The mtDNA encodes electron transport chain subunits and is packaged into nucleoids spread within the mitochondrial population. Nucleoids interact with the IMM, and their distribution is tightly linked to mitochondrial fusion and cristae shaping. Yet, little is known about the physio-pathological relevance of nucleoid distribution. We studied the effect of OPA1 and ADOA-associated mutants on …
Validation Studies Of The Flash-Tv System To Passively Measure Children’S Tv Viewing, Anil Kumar Vadathya, Tatyana Garza, Uzair Alam, Alex Ho, Salma M A Musaad, Alicia Beltran, Jennette P Moreno, Tom Baranowski, Nimah Haidar, Sheryl O Hughes, Jason A Mendoza, Ashok Veeraraghavan, Joseph Young, Akane Sano, Teresia M O'Connor
Validation Studies Of The Flash-Tv System To Passively Measure Children’S Tv Viewing, Anil Kumar Vadathya, Tatyana Garza, Uzair Alam, Alex Ho, Salma M A Musaad, Alicia Beltran, Jennette P Moreno, Tom Baranowski, Nimah Haidar, Sheryl O Hughes, Jason A Mendoza, Ashok Veeraraghavan, Joseph Young, Akane Sano, Teresia M O'Connor
Children’s Nutrition Research Center Staff Publications
TV viewing is associated with health risks, but existing measures of TV viewing are imprecise due to relying on self-report. We developed the Family Level Assessment of Screen use in the Home (FLASH)-TV, a machine learning pipeline with state-of-the-art computer vision methods to measure children's TV viewing. In three studies, lab pilot (n = 10), lab validation (n = 30), and home validation (n = 20), we tested the validity of FLASH-TV 3.0 in task-based protocols which included video observations of children for 60 min. To establish a gold-standard to compare FLASH-TV output, the videos were labeled by trained staff …
Assessing Visibility At Highway-Rail Grade Crossings Using Light Detection And Ranging (Lidar) Technology, Mohsen Naghdi, Pasi T. Lautala, Abdolmajid Erfani
Assessing Visibility At Highway-Rail Grade Crossings Using Light Detection And Ranging (Lidar) Technology, Mohsen Naghdi, Pasi T. Lautala, Abdolmajid Erfani
Michigan Tech Publications
In 2022, 2034 incidents occurred at highway-rail grade crossings (HRGCs) in the United States, posing significant risks such as fatalities, injuries, and property damage. These incidents underscore the need for effective prevention and mitigation strategies. With over 212,000 public and private HRGCs nationwide, safety monitoring is challenging, as traditional inspections primarily rely on manual assessments. Obstructed sightlines at HRGCs further increase safety risks by limiting road users' ability to see approaching trains. Although previous studies have addressed behavioral and safety issues, the literature currently lacks quantitative data analysis of sightlines at HRGCs. This study aims to address this gap by …
Chiron And The Machines Of Loving Grace: On Optimism, Pessimism, And Singularity, John T. Giordano
Chiron And The Machines Of Loving Grace: On Optimism, Pessimism, And Singularity, John T. Giordano
Budhi: A Journal of Ideas and Culture
Singularity has been a concern of the developers of cybernetics and artificial intelligence (AI) since the pioneering writings of such thinkers as Norbert Weiner. Yet many accept the inevitability of systems of AI surpassing human control and are optimistic that machine intelligence will harmonize human life with our environment. This essay examines this optimism against a reading of two poets: Richard Brautigan and Friedrich Hölderlin. Through these readings, it will attempt to show that the eclipse of nature by human beings can be used to examine the eclipse of the human being by machine intelligence. Thus, what is missing in …
Meaning, Truth, Art And Education, Peter Murphy
Meaning, Truth, Art And Education, Peter Murphy
Budhi: A Journal of Ideas and Culture
Meaning, Truth, Art and Education
Unmasking The 'New Normal' And The 'Vernacular Of The Veracious' During A Pandemic, Aurelio S. Agcaoili
Unmasking The 'New Normal' And The 'Vernacular Of The Veracious' During A Pandemic, Aurelio S. Agcaoili
Budhi: A Journal of Ideas and Culture
This paper argues that the deployment of a figurative language like the phrase “new normal” and many other verbal formulations during a pandemic is a form of power and control by political leaders. This deployment is calculated and calculating as it is meant to condition the minds of the masses that depend on the ruling political class for clarity, guidance, and some form of redemption. These “weaponized” words are presented as expressions of the veracious—essentially a vernacular of power—by persons of authority for a semblance of credibility. There are at least two versions of the veracious that are at play …
The Long Trail, End-To-End In Thirteen Days, Scott Livingston
The Long Trail, End-To-End In Thirteen Days, Scott Livingston
Appalachia
Miserably wet feet, too little food, and no ride home at the end—a couple’s most cherished adventure to date.
A Whirlwind India Trek, John H. Swanson
A Whirlwind India Trek, John H. Swanson
Appalachia
After a week of business in northern India, he stole a day to climb a mountain in the Himalayan foothills. He found crazy cars, a Ferris wheel, and mud.
I, For A Moment, Was Somewhere, John Teschner
I, For A Moment, Was Somewhere, John Teschner
Appalachia
A Peace Corps volunteer bushwhacks up Ol Donyo Orok, or Black Mountain.
Less Typical Now: A 1970s Retrospective, Jeffrey L. Marion
Less Typical Now: A 1970s Retrospective, Jeffrey L. Marion
Appalachia
His love of ultra-light equipment aside, a backcountry researcher finds that he is a product of the 1970s, still seeking solitude in long hikes.
Appalachia Winter/Spring 2007: Complete Issue
Appalachia Winter/Spring 2007: Complete Issue
Appalachia
Winter/Spring 2007 - Volume LVIII, Number 1 - issue #223. Reflections on the 1970s Hiking Boom: Featuring Stories from the Dawn of the Leave No Trace Movement.
Ellesmere: Trekking Along The Top Of The World, Michael B. Patterson
Ellesmere: Trekking Along The Top Of The World, Michael B. Patterson
Appalachia
As far north as one can go in the world and still be on land.
The Tradeoffs Of Trail Work, Doug Mayer
The Tradeoffs Of Trail Work, Doug Mayer
Appalachia
The intent behing trail maintenance has evolved from helping walkers to helping the treadway.
Walking Through An Idea, Bill Mckibben
Walking Through An Idea, Bill Mckibben
Appalachia
There's no place untouched by humans, but we must preserve the "relative wild."
Appalachia Winter/Spring 2008: Complete Issue
Catholic Responses To Peacebuilding, Climate Change, And Extractive Industries, William N. Holden, Kathleen Nadeau
Catholic Responses To Peacebuilding, Climate Change, And Extractive Industries, William N. Holden, Kathleen Nadeau
Budhi: A Journal of Ideas and Culture
The paper overviews the Catholic response to addressing climate change-related problems and its peacekeeping efforts in the conflict zones impacted by natural and manmade disasters. It argues for the importance of transforming the dominant economic paradigm based on extracting natural resources for sale around the world, into a more environmentally sound approach that promotes the sustainable use of renewable energy sources and the greenifying of the natural environment. It calls for a world in which humans are seen as stewards of creation and their cities are constructed with the view of tendering and caring for other living sentient species and …
Covid-19: Social Disease And Public Prudence, Peter Murphy
Covid-19: Social Disease And Public Prudence, Peter Murphy
Budhi: A Journal of Ideas and Culture
The article profiles the social aspects of the COVID-19 pandemic including the social component of virus transmission, the parallels between national and regional social distancing habits, and the impact of COVID-19 on populations. The interaction of low-contact and high-contact cultures with the COVID-19 virus is analyzed. The public policy response is examined with particular reference to proportionality in decision-making. The article explores the role of mid-range, balanced policies and temperate, moderate actions in dealing with a serious public health issue.
Climbing With A 2-Year-Old: Check The List: Ropes, Gps, Diapers, Sippy Cups..., Brian Irwin
Climbing With A 2-Year-Old: Check The List: Ropes, Gps, Diapers, Sippy Cups..., Brian Irwin
Appalachia
No abstract provided.
An Audacious World War Ii Trek: Three Allied Officers Traverse The Lowari Pass In The Hindu Kush Range In 1943, George J. Hill, Helene Z. Hill
An Audacious World War Ii Trek: Three Allied Officers Traverse The Lowari Pass In The Hindu Kush Range In 1943, George J. Hill, Helene Z. Hill
Appalachia
No abstract provided.
Unself-Conscious: Childhood Rambles, Carl Demrow
Appalachia Summer/Fall 2008: Complete Issue
Appalachia Summer/Fall 2008: Complete Issue
Appalachia
Summer/Fall 2008 - Volume LIX, Number 2 - issue #226. Adventures Near Home: A restored River, old roads, hidden ledges, and suburban rambles
Framing The Immigrant In Labor Unions And The Military In The United States, Sofya Aptekar, Shannon Gleeson
Framing The Immigrant In Labor Unions And The Military In The United States, Sofya Aptekar, Shannon Gleeson
Publications and Research
We present a comparative study of organizational discourses on immigrants in two cornerstone US institutions: labor unions and the US military, both powerful players in setting the terms of immigration debates and policies in the United States. How do unions and the military frame the role of immigrants within their institutions and in US society? We draw on qualitative content analysis of materials produced by AFL-CIO and the US military between 2000 and 2020. Despite significant differences in these institutions, we find that they share the following three core themes in their framing of immigrants: (1) immigrants as potential threats, …
Cryo-Em Structure Of A Photosystem I Variant Containing An Unusual Plastoquinone Derivative In Its Electron Transfer Chain, Christopher J. Gisriel, Vasily Kurashov, David F. Iwig, Brandon P. Russell, David J. Vinyard, Gary W. Brudvig, John H. Golbeck, K. V. Lakshmi
Cryo-Em Structure Of A Photosystem I Variant Containing An Unusual Plastoquinone Derivative In Its Electron Transfer Chain, Christopher J. Gisriel, Vasily Kurashov, David F. Iwig, Brandon P. Russell, David J. Vinyard, Gary W. Brudvig, John H. Golbeck, K. V. Lakshmi
Faculty Publications
Photosystem I (PS I) is a light-driven oxidoreductase responsible for converting photons into chemical bond energy. Its application for renewable energy was revolutionized by the creation of the MenB deletion (ΔmenB) variant in the cyanobacterium Synechocystis sp. PCC 6803, in which phylloquinone is replaced by plastoquinone-9 with a low binding affinity. This permits its exchange with exogenous quinones covalently coupled to dihydrogen catalysts that bind with high affinity, thereby converting PS I into a stable solar fuel catalyst. Here, we reveal the 2.03-Å-resolution cryo-EM structure of a recent MenB variant of PS I. The quinones and their binding environment are …
Redefining Research Impact: Developing And Evaluating Modified H-Indexes For Comprehensive Academic Assessment, Nash Mayhue Minton
Redefining Research Impact: Developing And Evaluating Modified H-Indexes For Comprehensive Academic Assessment, Nash Mayhue Minton
Theses and Dissertations
In academic research, the h-index has gained prominence as a useful metric for gauging the impact and productivity of researchers. This thesis seeks to provide a general overview of the h-index by providing information on the positive applications that the h-index utilizes, as well as the faults and limitations that diminish its utility. This thesis aims to combat the bias of hyper-authorship, which inherently inflates researchers' h-indexes by disproportionately attributing credit to individuals in multi-author publications, as well as provide other indices that could prove to be a possible replacement index or to be used as a basis for creating …
Abstracttrace: The Use Of Execution Traces To Cluster, Classify, Prioritize, And Optimize A Bloated Test Suite, Ziad A. Al-Sharif, Clinton L. Jeffrey
Abstracttrace: The Use Of Execution Traces To Cluster, Classify, Prioritize, And Optimize A Bloated Test Suite, Ziad A. Al-Sharif, Clinton L. Jeffrey
Engineering, Computing and Mathematical Sciences Faculty Articles
Due to the incremental and iterative nature of the software testing process, a test suite may become bloated with redundant, overlapping, and similar test cases. This paper aims to optimize a bloated test suite by employing an execution trace that encodes runtime events into a sequence of characters forming a string. A dataset of strings, each of which represents the code coverage and execution behavior of a test case, is analyzed to identify similarities between test cases. This facilitates the de-bloating process by providing a formal mechanism to identify, remove, and reduce extra test cases without compromising software quality. This …