Digital Commons Network^™

Substrate Temperature Effects On The Peel Behavior Of Temporary Pavement Marking Tapes, Hyeyoung Son, Kendra Erk, Chelsea Davis

School of Materials Engineering Faculty Publications

Temporary pavement marking (TPM) tapes are utilized In road construction to delineate temporary traffic lanes and work zones. Adhesive failure of TPM tapes can therefore remove lane and work zone designations, confusing drivers and causing serious accidents, especially in high speed zones. Thus, the adhesion of TPM tapes to pavement surface plays an important role in road construction traffic safety. Pressure sensitive adhesives (PSAs) comprise the adhesive layer of TPM tapes. The adhesion of PSAs depends on their temperature-dependent viscoelastic properties. Since environmental conditions vary during construction, the adhesion of TPM tapes will change over a range of operating temperatures. …

The (Human) Rights Of Nature: A Comparative Study Of Emerging Legal Rights For Rivers And Lakes In The United States Of America And Mexico, Elizabeth Macpherson

Duke Environmental Law & Policy Forum

An international consensus of scientific experts is now demanding "immediate action" in response to the environmental, climate, and biodiversity crises. But are our legal and regulatory frameworks equipped to respond to the rapid pace of environmental degradation, biodiversity loss and climate change? What incidence is there, transnationally, of laws that seek to protect the Earth from the humans that inhabit it? In the past few decades, there is a growing social, legal, and political movement towards more ecocentric regulation of the planet, where new laws and institutions seek to protect natural resources for their own intrinsic value. In this paper, …

Machine Learning As A Tool For Wildlife Management And Research: The Case Of Wild Pig-Related Content On Twitter, Lauren M. Jaebker, Hailey E. Mclean, Stephanie A. Shwiff, Keith M. Carlisle, Tara L. Teel, Alan D. Bright, Aaron M. Anderson

Human–Wildlife Interactions

Wild pigs (Sus scrofa) are a non-native, invasive species that cause considerable damage and transmit a variety of diseases to livestock, people, and wildlife. We explored Twitter, the most popular social media micro-blogging platform, to demonstrate how social media data can be leveraged to investigate social identity and sentiment toward wild pigs. In doing so, we employed a sophisticated machine learning approach to investigate: (1) the overall sentiment associated with the dataset, (2) online identities via user profile descriptions, and (3) the extent to which sentiment varied by online identity. Results indicated that the largest groups of online …

Antibacterial Activity Of Red Yeast Rice Extract Against Propionibacterium Acnes Atcc 11827 And Methicilin-Resistant Staphylococcus Aureus Atcc Baa-1683, Tiana Milanda, Ade Zuhrotun, Ulya Nabila, Vesara A. Gathera, Arif S.W Kusuma

Pharmacology and Clinical Pharmacy Research

Propionibacterium acnes ATCC 11827 and Methicillin-Resistant Staphylococcus aureus ATCC BAA-1683 are bacteria that cause skin infections, namely acne vulgaris and skin and soft tissue infection/SSTI. The increase in the number of resistant bacterial strains, such as MRSA, requires the search for alternative antibiotics, including using natural ingredients. Red yeast rice is a product of rice fermentation by Monascus purpureus, which is known to have antibacterial, antifungal, antitumor, antioxidant, anti-inflammatory, anti-cholesterol and immunomodulator. This study aims to determine the antibacterial activity of several red yeast rice extracts against these bacteria that cause skin infections. The research was carried out through the …

An Optimized O9-1/Hydrogel System For Studying Mechanical Signals In Neural Crest Cells, Tram P Le, Xiaolei Zhao, Shannon Erhardt, Jianhua Gu, Huie Wang, Tina O Findley, Jun Wang

Faculty, Staff and Student Publications

Neural crest cells (NCCs) are vertebrate embryonic multipotent cells that can migrate and differentiate into a wide array of cell types that give rise to various organs and tissues. Tissue stiffness produces mechanical force, a physical cue that plays a critical role in NCC differentiation; however, the mechanism remains unclear. The method described here provides detailed information for the optimized generation of polyacrylamide hydrogels of varying stiffness, the accurate measurement of such stiffness, and the evaluation of the impact of mechanical signals in O9-1 cells, a NCC line that mimics in vivo NCCs.

Hydrogel stiffness was measured using atomic force …

Celebrating The Msu Faculty: Faculty Awards, Murray State University

Reports

Program celebrating Faculty Awards from 2020 and 2021, distributed at the Murray State University's Welcome Back Luncheon, held under the portico of Waterfield Library on Friday, August 13, 2021.

Oil Bodies Sizes Variation Analyses Of Rapeseed In Two Locations As A Novel Trait For Genetic Engineering, Rita Andini, Muhammad Ikhsan Sulaiman, Murna Muzaifa, Yulia Dewi Fazlina, Christian Moellers

Jurnal Kultivasi

Tanaman raps (Brassica napus L.) adalah tanaman penghasil minyak utama di negara dengan iklim dingin seperti di Jerman. Minyak raps (Brassica napus L.) digunakan untuk bahan pangan, biodiesel, dan sebagai pakan ternak. Kandungan minyaknya bisa mencapai 33 – 48%. Tanaman minyak seperti kedelai (Glycine max), raps (Brassica napus L.), bunga matahari (Helianthus annuus) pada umumnya menyimpan kandungan minyaknya dalam suatu organela penyimpanan dikenal dengan ‘oil body’ yang mempunyai diameter antara 0,6 hingga 2,0 µm, tergantung dari spesies tanaman. Peningkatan kandungan minyak merupakan salah satu target pemuliaan di banyak tanaman minyak, termasuk di raps. Tulisan ini menceritakan tentang isolasi ‘oil body’ …

Synthesis And Biomedical Applications Of Functional Polymers, Jianxun Ding, Di Li, Jingxiao Chen, Chao Zhao, Parisa Pour Shahid Saeed Abadi

Michigan Tech Publications, Part 1

No abstract provided.

Mid-South Glbt News Press, Volume 1, Number 1

Other publications

Patricia Pair, President/ Publisher. Anita Moyt, General Manager/ Managing Editor. Jim Easter, columnist. John Crossen, cartoonist.

Special thanks to Rhodes College and the Paul Barret Jr. Library for providing initial scanning of this collection.

Assessment Of The Effects Of Airflow Conditions Related To Hop Drying, David Mabie

Department of Agricultural and Biological Systems Engineering: Dissertations, Theses, and Student Research

Hops have been utilized by brewers for centuries to contribute bitterness, antimicrobial preservation and desirable aromatic profiles to beer. The hop cone is a small, lightweight, high moisture content flower which produces lupulin glands containing resins and essential oils that contribute desirable characteristics to beer. Due to the high harvest moisture content (75% wet basis), hops must be rapidly dried to properly preserve them for future processing and brewing. While hops have been dried for centuries, most literature from the past century has focused on drying to minimizing loss to the resin or physical cone structure. The objectives of this …

Development Of Macromolecular Prodrug Of Sinomenine For The Treatment Of Rheumatoid Arthritis, Roshni Mukundan

Theses & Dissertations

Inflammation is a natural response of the body to infections or any potential threat to the body. But, sometimes the immune system attacks its own body causing persistent inflammation leading to inflammatory diseases. One of the common chronic inflammatory diseases is rheumatoid arthritis (RA) which causes inflammation of the synovial membrane. The current treatments for RA are effective in controlling the symptoms but they come with severe side effects and economic burden. Further, the management of pain is still a problem with these drugs. Sinomenine is a natural alkaloid obtained from the Chinese medicinal plant Sinomenium acutum that has been …

Effects Of Sodium Sulfate Attack On Concrete Incorporated With Drying-Wetting Cycles, Fang Liu, Zhanping You, Rui Xiong, Xu Yang

Michigan Tech Publications, Part 1

It has been widely observed that sulfate attack can damage the durability of concrete. This research investigated the mass loss and damage degree of concrete under sodium sulfate attack incorporated with drying-wetting cycles. The impact factors, including water-binder ratio, solution concentration of sodium sulfate, fly ash content, curing time, and drying-wetting cycle system, were observed to influence the sodium sulfate attack by the mass loss rate and damage degree at regular time intervals. Also, the hydrates of sulfate-attacked samples were analyzed using X-ray diffraction. Results indicated that a high water-binder and high-concentration sodium sulfate solution could accelerate the transportation of …

Direct Activation Of Light Alkanes To Value-Added Chemicals Using Supported Metal Oxide Catalysts, Md Ashraful Abedin

LSU Doctoral Dissertations

One of the most challenging aspects of modern-day catalysis is the conversion of methane. Direct conversion of methane via dehydroaromatization (MDHA) is a well-known process which can produce valuable hydrocarbons. Mo oxide supported on ZSM-5/MCM-22 has been studied extensively in recent years for MDHA. Mo carbides are responsible for activating methane by forming CHx species. These are dimerized into C2Hy and oligomerized on ZSM-5/MCM-22 Brønsted acid sites to form aromatics. Sulfated zirconia (SZ) supported Mo catalyst contains the acid sites necessary to produce benzene in MDHA. Here, sulfated hafnia (SH), a homologous oxide like SZ, has been proposed to provide …

Maritime Security In South East Asia: Indonesian Perspective, Melda Kamil Ariadno

Indonesian Journal of International Law

Maritime security is an important issue particularly for the archipelagic state. As the largest archipelagic state in the world, Indonesia has its own responsibility to guard its waters from any threat. Indonesian waters have been used for centuries to accelerate international trade. In addition, Indonesia needs to address its boundary problems, handling of piracy, combating Transnational Organized Crime, such as, human trafficking, drugs trafficking, and human smuggling. This article explains on Indonesian perspective of the maritime security in South East Asia.

Lightning Talk (5 Min): Not Really Acing It: Accessing Asexuality In Academic Libraries, Haviva Avirom, Violet Fox

Cataloging Queer Library Issues: A Symposium

Abstract

Asexuality is often a forgotten orientation, even within LGBTQ communities. In this lightning talk, we will discuss how this lack of visibility, shortage of relevant materials, and outright misunderstandings about asexuality can make finding resources difficult. Though the root of the problem lies in underpublishing of materials about asexuality, libraries compound the problem through inadequate collecting of asexual materials, both monographs and journal articles. Without specific intent to acquire and maintain asexuality resources, it is easy to miss these resources entirely. The presentation will consider the various campus stakeholders who benefit from increased visibility of asexuality resources. Visibility within …

Design And Overview Of The Solar Cruiser Mission, M. Cannella, S. Enger, A. Puls, J. Rodriguez, L. Johnson, J. Dervan, D. Turse

Small Satellite Conference

Solar Cruiser is a Small Satellite Technology Demonstration Mission (TDM) of Opportunity to mature solar sail propulsion technology to enable near-term, high-priority breakthrough science missions as defined in the Solar and Space Physics Decadal Survey. Solar Cruiser will demonstrate a “sailcraft” platform with pointing control and attitude stability comparable to traditional platforms, upon which a new class of Heliophysics missions may fly instruments. It will show sailcraft operation (acceleration, navigation, station keeping, inclination change) immediately applicable to near-term missions, and show scalability of sail technologies such as the boom, membrane, deployer, reflectivity control devices for roll momentum management to enable …

Creating A Setup To Assess The Use Of Virtual Reality For Mission Control, Felix Sittner, Cedric Liman, Gino Schulze, Hans Schülein, Jan Schmieder, Jan Tischhöfer, Marlene Busch, Sergio Montenegro

Small Satellite Conference

This paper describes a work in progress. We are preparing our first cubesat mission, InnoCube, which we plan to launch in spring 2023. We are also in the process of moving the whole chair to another building, and creating a new mission control room. We take this as an opportunity to try and compare some novel approaches, that might make the work of the ground team easier.

Our mission, InnoCube, is designed to test a “skip the harness (skith)” approach, which means the system is comprised of multiple autonomous computing nodes communicating wirelessly with each other. Each of these nodes …

The Lappisat Space Program - Expanding Observatory Quality Geophysical Measurements To Orbits, Jouni Envall, Alexandros Binios, Eija Tanskanen, Juha Biström

Small Satellite Conference

For more than 100 years, the Sodankylä Geophysical Observatory (SGO) has produced a continuous stream of measured data and conducted top-tier research on various topics on space and geophysics. The main research areas include magnetic disturbances, geomagnetic activity, ionospheric composition and disturbances, radio science, seismic activity, and cosmic rays. The observatory’s location in Finnish Lapland (Lappi in Finnish), 120 kilometers north of the Arctic Circle, has made it an ideal site for auroral studies and related geophysical research. It has been a time-honored tradition at SGO to design, develop and construct the observatory's most critical measurement instruments in-house. SGO’s instrument …

Ballistic Aerocapture For Smallsat: A Case Study For Venus Atmospheric Sampling Probe, Oswaldo Santana, Ye Lu

Small Satellite Conference

Aerocapture is a maneuver that can improve the capabilities of interplanetary small satellite missions to efficiently deliver a probe to a target destination. The maneuver is accomplished with a single atmospheric pass followed by a small propulsive burn to reach the final orbit. In this paper, we consider a SmallSat atmospheric sampling probe with an existing heatshield and evaluate the performance and benefits of ballistic aerocapture. The performance is assessed by comparing ΔV required of a fully propulsive orbital insertion and that of a ballistic aerocapture. Significant fuel mass savings can be achieved with a passive lifting vehicle. With a …

Observing And Tracking The Great Pacific Garbage Patch, Chris Greenly, Hannah Gray, Hueson Wong, Samuel Chinn, James Passmore, Prisilla Johnson, Yaseen Zaidi

Small Satellite Conference

The subtropical waters between Hawaii and California are currently infested with an accumulation of plastic estimated to be twice the area of Texas, otherwise known as the Great Pacific Garbage Patch (GPGP). This paper presents a novel CubeSat mission to monitor the size, growth and position of the GPGP. At 1.6 million square kilometres, the GPGP is by far the largest and most serious accumulation of garbage out of the five patches littered across the world’s oceans. If we are to prevent further damage to the marine ecosystems, it is imperative we act with the utmost urgency. Leveraging recent technological …

How Satellites Are Moving Beyond The Class System: Class Agnostic Development And Operations Approaches For Constraints-Driven Missions, Barbara Braun, Lee Jasper

Small Satellite Conference

Should we abolish the Class System? The Class A/B/C/D mission assurance and risk posture designations familiar to most satellite developers were established in 1986. They are used by both the Department of Defense (DoD) and National Aeronautics and Space Administration (NASA) to define risk and risk mitigation requirements for flight missions. However, many of today’s satellites are different – smaller, digitally engineered, designed for production, and increasingly destined for proliferated architectures. The rate of development is increasing while the uniqueness of the systems being built is decreasing.

The need to move faster and the ability to utilize, for the first …

Rf Cables: The Overlooked Satellite Component, Andrew Kurzrok, Maria Calia

Small Satellite Conference

In comparison to the difficult work of payload design and system integration, specifying the correct RF cables seems all-too simple. A passive microwave component, the purpose of an RF cable is simply to transport an analog signal from one physical location on the satellite to another.

However, RF cabling design decisions can mean the difference between mission success and failure. RF cables can represent a potential weak link in overall system design because they are mechanically and electrically exposed. All too often, we find engineers have specified RF cables that either do not optimize for system performance or create mission …

Secure Space Mesh Networking, David Andaleon, Assi Friedman, Jonathan Wolff, Jeff Janicik

Small Satellite Conference

Innoflight’s Secure Space Mesh Networking development and prototyping efforts started at its incorporation over 15 years ago with a vision of establishing end-to-end Internet Protocol (IP) connectivity in and through space. A number of space industry trends have accelerated the demand for space networking: (a) the widespread adoption of enterprise-grade and cloud-based, IP-centric ground system architectures; (b) the accelerated growth of both commercial and government proliferated Low Earth Orbit (pLEO) constellations leveraging small satellites (SmallSats); (c) the maturation, miniaturization and commoditization of high-speed Radio Frequency (RF), Free Space Optical (FSO) Inter-Satellite Links (ISLs), and high-performance flight processors for aforementioned SmallSats; …

5g Nb-Iot Via Low Density Leo Constellations, René Brandborg Sørensen, Henrik Krogh Møller, Per Koch

Small Satellite Conference

5G NB-IoT is seen as a key technology for providing truly ubiquitous, global 5G coverage (1.000.000 devices/km2) for machine type communications in the internet of things. A non-terrestrial network (NTN) variant of NB-IoT is being standardized in the 3GPP, which along with inexpensive and non-complex chip-sets enables the production of competitively priced IoT devices with truly global coverage. NB-IoT allows for narrowband single carrier transmissions in the uplink, which improves the uplink link-budget by as much as 16.8 dB over the 180 [kHz] downlink. This allows for a long range sufficient for ground to low earth orbit (LEO) communication without …

Non Data-Aided Carrier Tracking Techniques For Continuous-Phase Frequency-Shift Keyed Signals, Brendan Hill, Nazia Mozaffar, Salwan Damman

Small Satellite Conference

Communications between ground stations and nanosats in low earth orbit (LEO) require acquisition and tracking of large Doppler frequency offsets due to the relative velocity between the transmitter and the receiver. The Doppler frequency shift varies with time, reaching its fastest rate of change as the small satellite reaches its closest approach to the ground station. For phase modulated signals, a frequency offset estimate extracted from the band edge filters is used to correct for the Doppler shift. This approach encounters difficulties when it’s used to correct for frequency offset in continuous phase frequency shift keyed (CPFSK) signals. Optimized band …

Advanced Technologies: 7 Degrees Of Freedom Robotic Arm On Archinaut One, Kevin French

Small Satellite Conference

In Space Manufacturing (ISM) combined with robotic In Space Assembly (ISA) enables autonomous construction of space structures including spin gravity habitation rings, precision synthetic aperture radar (SAR) structures, and trusses for kilometer scale solar sails. Archinaut One (AO), designated as OSAM-2 by NASA, will demonstrate ISM and ISA through the ability to 3D print and robotically manipulate meter scale structures in orbit all from an Evolved Expendable Launch Vehicle (EELV) Secondary Payload Adapter (ESPA) class satellite. This work focuses on challenges associated with autonomous robotic ISA and ISM operations. Limited computational resources, robot satellite coupled dynamics, contact dynamics, and short …

Development Of A Cots-Based Propulsion System Controller For Nasa’S Lunar Flashlight Cubesat Mission, Nathan Cheek, Nathan Daniel, E. Glenn Lightsey, Sterling Peet, Celeste Smith, Daniel Cavender

Small Satellite Conference

The Lunar Flashlight mission is designed to send a 6U CubeSat into lunar orbit with the aim of finding water-ice deposits on the lunar south pole. The Glenn Lightsey Research Group (GLRG) within Georgia Tech’s Space Systems Design Laboratory (SSDL) is developing a low-cost propulsion system controller for this satellite using commercial-off-the-shelf (COTS) parts, with an emphasis on overcoming the harsh environment of lunar orbit through careful architecture and testing. This paper provides in-depth coverage of the Lunar Flashlight Propulsion System (LFPS) controller development and testing processes, showing how an embedded system based on COTS parts can be designed for …

Result Of Space Particle Monitor (Spm) On-Orbit Demonstration, Yasunari Koumoto, Kazuo Tanimoto, Yasuo Terakado, Tsutomu Ueno, Yoko Suzuki, Noriaki Oka, Masahiro Umesato

Small Satellite Conference

Space Particle Monitor (SPM) is a compact, lightweight and low-cost radiation measurement device that applies two PIN silicon semiconductor detectors. SPM was developed in the SERVIS (Space Environment Reliability Verification Integrated System) project under the Ministry of Economy, Trade and Industry (METI), and is mounted on JAXA RAPid Innovative payload demonstration Satellite 1 (RAPIS-1) launched in January 2019. We achieved the full success that the discrimination and energy content of electrons, protons, and heavy ions could be observed. This paper reports on-orbit demonstration results of SPM.

Payload Testing Of A Weak Coherent Pulse Quantum Key Distribution Module For The Responsive Operations On Key Services (Roks) Mission, Cassandra Mercury, Sonali Mohapatra, Craig Colquhoun, Steve Greenland, Mikulas Cebecauer, Philippos Karagiannakis, Ahren Mctaggart, David Lowndes, Milan Stefko, John Rarity

Small Satellite Conference

Quantum Key Distribution (QKD) missions currently in development for space are expanding in number due to the increasing need for more secure means of encryption combined with the range limitations of terrestrial QKD. Most of these new missions are using smaller satellites to test their payloads. The ROKS (Responsive Operations for Key Services) mission is one such mission. It will utilize a 6U CubeSat bus and is set to launch in Q4 2022. A breadboard model of a 785nm weak coherent pulse quantum source module designed for ROKS, named JADE, was tested within a lab testbench environment with the mission’s …

Automatic Personalization Of User Interfaces Based On User Interaction Analytics, Matthew S. Rendely, Tommy Nyquist, Thomas Boonsiri, Tarun Bansal, Michael Crouse, Filip Gorski, Mingpu Hu, David Trainor, Akancha Gupta

Defensive Publications Series

The default user interface (UI) of software applications is the same for all users, even though users differ in terms of their needs and preferences for using the software. UI customization is typically limited to the most advanced and/or highly active users. As a result, a significant proportion of users of a software do not reap the benefits of having a UI that is personalized to them. This disclosure describes techniques to determine and present a personalized UI to each user or an application, with the user’s permission. UI personalization is performed based on analytics of user-permitted data of user …