Engineering Commons^™

Water Conservation Potential Of Self-Funded Foam-Based Flexible Surface-Mounted Floatovoltaics, Kaomi Soulemane Hayibo, Pierce Mayville, Ravneet Kaur Kailey

Michigan Tech Publications, Part 1

A potential solution to the coupled water–energy–food challenges in land use is the concept of floating photovoltaics or floatovoltaics (FPV). In this study, a new approach to FPV is investigated using a flexible crystalline silicon-based photovoltaic (PV) module backed with foam, which is less expensive than conventional pontoon-based FPV. This novel form of FPV is tested experimentally for operating temperature and performance and is analyzed for water-savings using an evaporation calculation adapted from the Penman–Monteith model. The results show that the foam-backed FPV had a lower operating temperature than conventional pontoon-based FPV, and thus a 3.5% higher energy output per …

A Systematic Literature Review With Bibliometric Meta-Analysis Of Deep Learning And 3d Reconstruction Methods In Image Based Food Volume Estimation Using Scopus, Web Of Science And Ieee Database, Prachi Kadam, Nayana Petkar, Shraddha Phansalkar Dr.

Library Philosophy and Practice (e-journal)

Purpose- Estimation of food portions is necessary in image based dietary monitoring techniques. The purpose of this systematic survey is to identify peer reviewed literature in image-based food volume estimation methods in Scopus, Web of Science and IEEE database. It further analyzes bibliometric survey of image-based food volume estimation methods with 3D reconstruction and deep learning techniques.

Design/methodology/approach- Scopus, Web of Science and IEEE citation databases are used to gather the data. Using advanced keyword search and PRISMA approach, relevant papers were extracted, selected and analyzed. The bibliographic data of the articles published in the journals over the past …

Annual Simulation Of Photovoltaic Retrofits Within Existing Parabolic Trough Concentrating Solar Powerplants, Nipun Goel, Hannah O'Hern, Matthew Orosz, Todd Otanicar

Mechanical and Biomedical Engineering Faculty Publications and Presentations

Solar power for electricity production comes from either photovoltaics or concentrating solar power plants. The former has seen rapid growth and expansion due to the rapid fall in global prices, while the latter has seen moderate growth due to ability to cheaply store thermal energy for later use. Hybridization, or combining photovoltaics with concentrating solar power represents a potential way for lowering cost while enabling long term storage. Over 5 GW of capacity exist worldwide using parabolic trough style technology for concentrating solar power which presents a unique option for optimization in the form of a photovoltaic retrofit. While it …

A Framework For Assessing The Reliability, Availability, Maintainability, And Safety (Rams) Of Decentralized Sanitation, Adefunké Adeosun

USF Tampa Graduate Theses and Dissertations

In established industry sectors, Reliability, Availability, Maintainability, and Safety (RAMS) risk assessments are normally used to compare the risks associated with different technologies on process units. Sanitation solutions are split into traditional wastewater treatment which is centralized treatment and can be classified as an established industry, and decentralized treatment such as pit latrines and septic tank systems which are on much smaller scales. Also they can be classified as non-conventional methods such as reinvented advanced decentralized non-sewered sanitation solution techniques exist mainly in two forms as “Single-User Reinvented Toilet (SURT)” systems or “Multiple-User Reinvented Toilet (MURT)” systems. Advanced decentralized non-sewered …

Engineering Characteristics Of Nest Building Geomaterials Used By Mud Dauber Species, Noura Saleh

LSU Master's Theses

Mud dauber wasps construct their nests using soil from adjacent areas. Mud dauber nests have been studied from an entomological perspective. However; the properties of the nest material remain unexplored from a soil engineering perspective. This study investigated the physical and mechanical properties of the nest soil for use in future bio-inspired design to improve soil behavior as a construction material. To achieve this goal, nests from three mud dauber species (black and yellow, organ pipe, and steel blue) were collected from locations near Baton Rouge, Louisiana. The shape, weight, moisture content, organic content, and specific gravity of the nests …

Life Cycle Assessment To Demonstrate How Automation Improves The Sustainability Performance Of An Underground Mining Operation, Kyle Moreau, Corey Laamanen, Ron Bose, Helen Shang, John A. Scott

Journal of Sustainable Mining

The worldwide move to introduce more automation into underground metal ore mining is currently aimed at improving both operational productivity and safety. We have used a comparative life cycle assessment (LCA) as a novel approach for the industry to determine the beneficial impacts automation can also have on environmental performance using data collected on mine site productivity and energy consumption. The LCA looked at four impact categories: global warming potential, acidification, eutrophication, and human toxicity. When comparing key automated equipment to their traditional manual counterpart, all four impact categories experienced a reduction with automation and a subsequent improvement in sustainability …

Nature Of Problem-Solving Skills For 21st Century Stem Learners: What Teachers Need To Know, Paul Nnanyereugo Iwuanyanwu

Journal of STEM Teacher Education

Since the emergence of the fourth industrial revolution which calls for a new model of learning for the twenty-first century learners, it has been argued that the nature of problems that learners must solve in science, technology, engineering and mathematics (STEM) must also be transformed to enable new forms of learning skills that are needed to tackle complex global challenges. However, the question of how best to teach these skills purposefully and explicitly is largely overlooked. STEM education reformers recognize that the lecture method or traditional method of teaching is highly ineffective for teaching twenty-first century competencies and skills that …

Proposal For The Development And Addition Of A Cybersecurity Assessment Section Into Technology Involving Global Public Health, Stanley Mierzwa, Bok Gyo Jeong, Claire Yun

Center for Cybersecurity

This paper discusses and proposes the inclusion of a cyber or security risk assessment section during the course of public health initiatives involving the use of information and communication computer technology. Over the last decade, many public health research efforts have included information technologies such as Mobile Health (mHealth), Electronic Health (eHealth), Telehealth, and Digital Health to assist with unmet global development health needs. This paper provides a background on the lack of documentation on cybersecurity risks or vulnerability assessments in global public health areas. This study suggests existing frameworks and policies be adopted for public health. We also propose …

Effect Of Landfill Leachates On Some Water Quality Indicators Of Selected Surface Water And Groundwater At Ilokun, Ado-Ekiti, Nigeria, Olorunwa Omofunmi, Adesola Satimehin, Abraham Oloye, Okwunna Umego

Makara Journal of Technology

This study was conducted to examine the impact of dumpsites on the quality of groundwater and surface water. The water samples and leachates were collected from dumpsites in respective zones. The physicochemical properties of the samples were examined and determined in accordance with the standards of the American Public Health Association. Results indicated that the groundwater and surface water that are close to the dumpsites have an electrical conductivity of 385 and 245 Sd/cm, total dissolved solids of 168 and 128 mg/L, a turbidity of 4.6 and 22 NTU, a total alkalinity of 103 and 50 mg/L, a total hardness …

Simulation Of A Unit Injector For Ammonia Injection In A Compression Ignition Engine, Mohammed Aziem Rujub

World Maritime University Dissertations

No abstract provided.

The Effect Of Carbonate Rock Wettability On The Performance Of Low Salinity Water Flooding: An Experimental Approach, Hildah Nantongo

Chemical and Petroleum Engineering Theses

The performance of low salinity waterflooding (LSWF) in different wettability environment is still unclear for the oil industry. The concessions among researchers are that low salinity does not work in water-wet carbonate oil reservoirs. In this project carbonate core flooding experiments on cores with different wettability’s conditions, including water-wet, oil-wet, and intermediate wettability were performed at reservoir conditions of pressure and temperature. Seawater was selected as a base water and its concentration & composition were modified through dilution and/or spiking with sulfate. The base water was diluted with water 10 and 50 times and spiked with sulfate to 2 and …

Brazilian Regulation Aspects And Their Impact On Costs, Alexandre Berbel, Frederico Zaccaro, Philippe Dos Santos, Rogerio Maldonado

Graduate Student Works

This project analyzes the Brazilian regulation for the airline and the current public data provided by the stakeholders. It intends to scientifically support a possible change in Brazil's existing regulation related to airline responsibilities on passenger accommodation for different types of situations, including ANAC 400 and other ramifications. This project aims to compare the Brazilian law with various regulations adopted in other markets where the rules are created considering different circumstances to define responsibilities for the passenger accommodations. This study will analyze the differences, measuring the impacts that changes could bring in terms of costs for the Airlines. It will …

Enhancing The Performance Of Asphalt Mixtures Containing High Rap Content With The Use Of Different Wma Technologies, Husam Sadek, Marwa Hassan, Charles Berryman, Mohammad Hossain, Farah Zaremotekhases

Publications

The production of Warm-mix asphalt mixtures in conjunction with reclaimed asphalt pavement (RAP) has received considerable interest in recent years for economic and environmental reasons. The primary objective of this project is to enhance the performance of asphalt mixtures containing RAP in Region 6 using different WMA technologies. In this project, the effect of utilizing 0%, 25%, and 35% RAP contents on the performance of different WMA mixtures against rutting, moisture damage, and fatigue cracking are evaluated. The effects of the WMA technologies on the rutting performance of the asphalt mixtures and recovered binders were investigated using loaded wheel tracker …

Bs News November/December

Building Services Engineering

No abstract provided.

A New Green Composite Based On Polylactic Acid Mixed With Biomass From Uae Date Palm Waste For Cutlery And Food Packaging Applications, Noran Hussein Awad Elsayed Mousa

Theses

Petroleum-based plastic cutlery is widely used and due to its non-biodegradable properties, they cause serious threats to the environment. Therefore, there is a need to fabricate such products from biodegradable material. Date Palm Rachis (DPR) waste was used as a filler in three levels of 30 wt%, 40 wt% and 50 wt% for cost-performance optimization balance and to improve the thermal behaviours of the biodegradable Polylactic Acid (PLA). The preparation of biodegradable PLA/date palm waste composites was done using a melt mixing extruder at 180°C by varying parameters such as mixing time, the composition of date palm waste biomass, biomass …

Level Of Science Achievement: Basis For The Production Of Strategic Intervention Materials (Sims), Febbie C. Verano, Sheena Mae T. Comighud

UBT International Conference

This research used the descriptive method to determine the level of Science Achievement of Grade VI Pupils: Basis for Production of Strategic Intervention Materials in Bayawan City East Central School, Bayawan City Division during the SY 2019-2020. The quantitative data were gathered from 134 pupils of Bayawan City East Central School, Bayawan City Division during the SY 2019-2020. Also, the researcher conducted a survey questionnaire. Descriptive method was used in this study. The statistical tools used in the analysis of the data were percentage, frequency, mean, weighted mean, and z-test. The study found out that the level of Science Achievement …

Coal Exploration Using Electrical Resistivity Method In Some Parts Of Benue Trough, Nigeria, Saminu Olatunji, Abdulgafar T. Jimoh

Tanzania Journal of Science

Geoelectrical resistivity sounding technique was used to delineate the occurrence and extents of coal seam. Fifteen points were sounded with Schlumberger configuration in the suspected coal deposit site bounded by longitudes 7.344° E and 7.366° E, and latitudes 7.318° N and 7.33° N. The vertical electrical sounding (VES) data were analyzed and the corresponding geo-electric parameters at various depths were modeled. The earth model within the study area was correlated with available lithology of a nearby mine site. The sounding signatures are KQHK and KHK curve types which revealed five to six distinct geo-electrical equivalent layers. The wet to dry …

Use Of Sugarcane Bagasse Ash As Partial Cement Replacement In Interlocking Stabilized Soil Blocks (Issbs), Adah Shair

USF Tampa Graduate Theses and Dissertations

Global infrastructure needs for adequate housing, water provision and improved sanitation are on the rise. UN-Water estimates that 1 in 3 people still lack access to safe drinking water and about 4.2 billion people across the globe lack access to safely managed sanitation services. Rapid urbanization and the global refugee crisis have also increased the demand for adequate and efficient housing. UN Sustainable Development Goals cannot be achieved until these needs are met. Given the high environmental impact and cost of cement-heavy construction, alternate construction techniques like appropriate earth technologies need to be adopted. Interlocking stabilized soil blocks (ISSBs), a …

Global Air Quality Trekkers: Nandi Clean Kitchen Study, Samantha Dykhuis, Stephanie Schiavo, Avalin Senefeld

Purdue Journal of Service-Learning and International Engagement

Indoor air pollution is a widespread environmental health challenge sub-Saharan Africa and is the leading cause of premature death in many sub-Saharan African countries. This pollution is primarily caused by the burning of biomass fuels inside an enclosed kitchen in order to provide heat for cooking. Global Air Quality Trekkers is an undergraduate engineering team within the EPICS department at Purdue that began in fall 2016. Our objective is to create a kitchen design that utilizes natural ventilation to mitigate the amount of air pollutants present in these kitchens, specifically in the Nandi community of Western Kenya. This year, our …

Resource Discovery In A Changing Content World, Allen Jones, Cynthia R. Schwarz, Hannah Mckelvey, Rachelle Mclain, Christine Stohn

Charleston Library Conference

Discovery services have evolved to include not just books and articles, but databases, website content, research guides, digital and audiovisual collections, and unique local collections that are all important for their users to be able to find. Search and ranking remain at the core of discovery, but advanced tools such as recommendation, virtual browse, ‘look inside‘, and the use of artificial intelligence are also becoming more prevalent. This group of panelists discussed how content in their discovery systems can change based on the context of the user, using as examples Primo and Blacklight, and how content is populated, discovered and …

Review Of The Tight Radius Drilling Technology Based On High Pressure Water Jet, Fan Yao, Zhang Qun

Coal Geology & Exploration

Tight radius drilling technology based on high pressure water jet is an important technical means to realize low-cost and efficient development of oil and gas resources. According to the research and application of tight radius drilling technology based on high pressure water jet, the equipment buildup, drilling theory, technical process and application effect of three tight radius drilling technologies and equipments(i.e., forging milling and reaming hydraulic type, forging milling and reaming jet thrust type and casing window type) are summarized systematically, and the advantages, disadvantages and adaptability of different technologies are included. From the point of view of increasing production …

Satellite-Based Monitoring Of Irrigation Water Use: Assessing Measurement Errors And Their Implications For Agricultural Water Management Policy, T. Foster, Taro Mieno, Nicholas Brozovic

Daugherty Water for Food Global Institute: Faculty Publications

Reliable accounting of agricultural water use is critical for sustainable water management. However, the majority of agricultural water use is not monitored, with limited metering of irrigation despite increasing pressure on both groundwater and surface water resources in many agricultural regions worldwide. Satellite remote sensing has been proposed as a low-cost and scalable solution to fill widespread gaps in monitoring of irrigation water use in both developed and developing countries, bypassing the technical, socioeconomic, and political challenges that to date have constrained in situ metering. In this paper, we show through a systematic meta-analysis that the relative accuracy of different …

Facilitating Educational Opportunities For Pilots Using Cohort Rpl, Pio Fenton, Deirdre Goggin

Dept. of Marketing & International Business Conference Material

Facilitating Educational Opportunities for Pilots using Cohort RPL 3.3 Pio Fenton and Deirdre Goggin The lifestyle and, indeed workstyle, of pilots has long proved an impediment to the attainment of third level qualifications while maintaining active and full participation in the workforce. Equally, the significant investment in pilot training has been poorly reflected in mechanisms of advanced entry to college and university programmes. This poses a quandary for those of us in Higher Education which requires quick resolution for this critical element of the airline industry. Cork Institute of Technology (CIT) has developed a programme which, by design, reflects the …

True Cost Of Coal: Coal Mining Industry And Its Associated Environmental Impacts On Water Resource Development, Noshin Masood, Karen Hudson-Edwards, Abida Farooqi

Journal of Sustainable Mining

Coal is a strategic and essential resource that ensures quality of life, energy security and sustainable development. Being the cheapest source of energy, it is the second after oil that is used to generate 40% of the world's electricity. However, traditional and conventional coal fuel extraction can threaten human health bycontaminating air and water, harming land, and contributing to global warming. The environmental impacts associated with conventional methods of coal mining and consumption can affect all components of the environment, and these impacts may be beneficial or harmful, permanent or temporary, repairable or irreparable, and reversible or irreversible in nature. …

Analyzing Fan Zones Hierarchy In The City At Football Mega Event; Appli Analyzing Fan Zones Hierarchy In The City At Football Mega Event; Applied Study: Borg El Arab Stadium, Alexandria, Egypt, Walaa Yoseph El-Sayed

Architecture and Planning Journal (APJ)

Fan Zones is not just a seat in the amphitheater; it is a holistic concept deals with fans motions and requirements since their involvement in the city. Since the beginning of football game and championship; fan zones had witness a series of upgrading sequential mega events; this upgrading or development was according to contemporary aspects and age requirement. By the beginning of the Third Millennium; fan zones were the main motive that shaped and developed stadia characters; whereas fans were the spirit of the mega event and the first priority in designing the national & international stadia as well as …

Managing Distortions In The Egyptian Spatial System: Does The Current Development Policy Pay Off?, Tarek Saad Ragab

Architecture and Planning Journal (APJ)

This research reviews the recent trend of the Egyptian national development policy of which major objectives are alleviating the intensity of untamed urban growth - and - population concentration in urban cores, and better integration of the national economy subsets. Despite attempts to reconcile these objectives in one agenda, the paper concludes that main issues endemic to the national spatial development policy in Egypt remain dangerously undervalued. The paper poses the question of whether the current spatial development policy paradigm can contribute effectively to managing the Egyptian spatial system imbalances. An answer was sought through policy analysis, which included the …

Living In Hot Arid Environments; An Overview Of The South African Experience, Riham Muhammed Gaber

Architecture and Planning Journal (APJ)

One of the most significant challenges facing the world today is the ever increasing tension between technical development and the environment. High environmental quality is a key term that researchers are striving to accomplish, in view of the catastrophes the world is now facing. Our nation and the world have an enormous need for Sustainable architecture. This demands that we rethink the extractive habits of our industry in countries, and reconnect them with the natural world and ecosystems that support life and look for advanced solutions for energy, water, and climate change. The driver of these needs is humankind. People …

The Analysis Of Urban Concentration And Decentralization In Egypt: Case Study Of Port Said Governorate., Hany M. Ayad

Architecture and Planning Journal (APJ)

The structural spatial imbalances in Egypt have received considerable attention in recent years. Discussions have been characterized by both a focus towards the importance of the exploitation of the competitive advantages of regions and the reduction of socio-economic disparities by directing development towards backward regions. Those two opinions are drawing attention towards the need for an in-depth analysis of concentration and decentralization policies and their impacts on the land use distribution. This paper analyzes the urban growth scenarios in Port Said governorate within a framework of a decentralized concentration approach for the allocation of economic activities. The purpose of this …

Global Aeolian Dust Variations And Trends: A Revisit Of Dust Event And Visibility Observations From Surface Weather Stations, Xin Xi

Michigan Tech Publications, Part 1

This study revisits the use of horizontal visibility and manually reported present weather (ww) records from the NOAA Integrated Surface Database (ISD) for characterizing the aeolian dust variability and recent trends over the globe and three largest source regions (North Africa, Middle East, and East Asia). Due to its qualitative nature, ww is combined with visibility to derive a new variable, VI, which has higher correlations with the dust emission and burden from satellite observations and global aerosol reanalyses than does the dust event frequency (FR) derived from ww only. Both FR and VI capture …

Measurement Of Surface Subsidence And Ground Collapse Caused By Underground Mining In The Boleo Copper District, Mexico, Jong-Gwan Kim

Journal of Sustainable Mining

Subsidence and vertical movements in mines are a challenge in mining operations. To qualify as a controlled mine site, ground movements must be measured regularly during mining operations. Boleo Copper District mine was monitored and the movement during mining operations was measured from Oct. 31, 2018 to March 15, 2019. The evaluation of vertical and horizontal movement was determined in four locations in the mine areas M303, M303S, M303 C, and M305. The exploitation area, which measured approximately 80 x 90 m² with a height of 2.4 m, impacted the surface in the form of cracks. These cracks were …