Structure-Function Relationships Of Bighorn Sheep Horncore Bone And Horn-Horncore Interface Materials For Energy Absorption Applications,
2023
University of Massachusetts Amherst
Structure-Function Relationships Of Bighorn Sheep Horncore Bone And Horn-Horncore Interface Materials For Energy Absorption Applications
Doctoral Dissertations
Bighorn sheep rams do not show overt signs of traumatic brain injury from head impacts experienced during intraspecific combat. Rams’ cranial appendages bear the brunt of ramming impacts and are composed of a keratin-rich horn anchored to a bony horncore via a soft connective tissue interface. The horncore is filled with velar bone which has a unique porous architecture with a comparable bone volume fraction, but larger strut thickness and separation than typical mammalian trabecular bone. Velar bone absorbs more energy than the horn and substantially reduces post-impact brain cavity accelerations in computational models of bighorn sheep ramming. These findings …
Development Of Corn Kernel-Based Biocomposite Films For Food Packaging Applications,
2023
South Dakota State University
Development Of Corn Kernel-Based Biocomposite Films For Food Packaging Applications, Swastika Bera
Electronic Theses and Dissertations
Most of the current and active food packaging resources and methods are nonbiodegradable and nonrenewable therefore harmful to the environment. Due to this, alternate sources of food packaging materials are in high demand. In this study, a bio-composite film has been developed, with Corn kernel powder as fiber reinforcement which is mixed with gelatin, and lignin two biopolymers as the matrix. The effect of Corn Kernel (CK) reinforcement on the Gelatin/Lignin (G/L) matrix on mechanical and barrier properties has been studied. CK has shown great potential as reinforcement to natural polymer, gelatin, and lignin (G/L) for food packaging applications as …
Silver Doped Nanoceria (Agcnp) Integrated Silk Scaffold For Chronic Wound Healing,
2023
University of Central Florida
Silver Doped Nanoceria (Agcnp) Integrated Silk Scaffold For Chronic Wound Healing, Architha K. Venkatesan
Honors Undergraduate Theses
Chronic wound healing can be seriously impeded by the formation of biofilms, infections, peri-wound edema, hematoma, osteomyelitis, and the formation of reactive oxidative species (ROS). We hypothesize that a scaffold created from Silver-Doped Nanoceria (AgCNP) embedding silk can be beneficial to aid the wound healing process, inhibit inflammation and prevent microorganisms from forming a biofilm over the wound. Current wound healing methods such as intradermal injections are not advantageous to use since they can cause unwanted responses elsewhere in the body other than the wound site. Silk, however, has a positive impact on the wound healing effect and can be …
Beeswax Wraps As An Alternative To Single-Use Plastics,
2023
The University of Akron
Beeswax Wraps As An Alternative To Single-Use Plastics, Sarah Skiver
Williams Honors College, Honors Research Projects
The project goal was to compare the food storage efficacy of sustainable beeswax wraps verses the single-use plastic methods of resealable plastic sandwich bags and plastic cling wrap. The goal was also to test the reusability of the beeswax wraps, as it is a key advantage of beeswax wraps that is advertised. The project purpose was to explore sustainable and eco-friendly alternatives to single use plastics, which are harmful to the environment in both their production and their disposal. Food spoilage was compared in beeswax wrap, plastic sandwich bags, and plastic cling wrap, and spoilage was also observed in a …
Wetting Transition Of Texturized Surfaces,
2023
The University of Akron
Wetting Transition Of Texturized Surfaces, Jenna Stephens
Williams Honors College, Honors Research Projects
Building on previous research, this project aims to continue the investigation of the wettability of various liquids on a uniform, texturized surface. Different surface energies can impact the wettability of a surface. The surface can be hydrophilic, hydrophobic, or in between. The goal of this project is to research how features of texturized surfaces affect the wetting transition of water, oil, and a mixture of both. Additionally, this project aims to improve the quality of the 3D printed surfaces. The surfaces that will be studied are constructed using UV cured resin 3D printing and are made up of an array …
Clove Essential Oil And Nanoclays-Based Active Food Packaging,
2022
Technological University Dublin
Clove Essential Oil And Nanoclays-Based Active Food Packaging, Kalpani Y. Perera, Shubham Sharma, Amit K. Jaiswal, Swarna Jaiswal
Articles
Active food packaging materials enhance the shelf-life of food products while reducing food waste. The current study aims to develop a biodegradable active food packaging material. The food packaging material was developed with the incorporation of clove essential oil, sodium alginate, gelatin, and nanoclay films were prepared. The influences of nanoclay and clove on the surface, optical, mechanical, chemical, barrier, and pH-indicating properties were studied. The lightness and yellowness increased by 1.06 folds and 3.34 folds when compared to clove (control), respectively. The UV barrier property 0.08±0.01nm in all films, while 8.37 folds reduction in transparency has been observed as …
Out Of The Wood: Sojurn Cyclery,
2022
Cedarville University
Out Of The Wood: Sojurn Cyclery, Jay H. Kinsinger
Engineering and Computer Science Faculty Contributions to the Popular Press
No abstract provided.
Gopher Tortoise Seed Dispersal Monitoring,
2022
Florida International University
Gopher Tortoise Seed Dispersal Monitoring, Bryan Torres Garcia
2022 MME Undergraduate Research Symposium
Gopher tortoises are native to Florida and vital to the ecosystem due to the underground boroughs they build, which provide shelter to other animals, and for their key role in seed dispersion. In order to improve our understanding of the role of gopher tortoises on biodiversity, we aim to investigate the digestive track of gopher tortoises. Data on seed dispersion distance and gut retention time are critical to effective and efficient endangered plant species conservation efforts. In a multidisciplinary project between Department of Earth and Environment, College and Engineering, and the Miami Zoo, we are fabricating an ingestible device to …
Features Designing Special Clothing For The Hot Climate Of Uzbekistan,
2022
Tashkent Institute of textile and Light Industry
Features Designing Special Clothing For The Hot Climate Of Uzbekistan, N Kh Mirtalipova, N A. Isaxujayeva
Technical science and innovation
This paper considers the issues of establishing the relationship between the properties of fabric, clothing design and the comfort of clothing; communication of the size of the human body, allowance for free fitting, modern design when developing the design of clothing; connection of the allowance for free fitting with a suitable air gap. A diagram is given that characterizes the dependence of the comfort of clothing on its design and properties of fabrics. A mathematical model of the processes of air exchange in the underwear space is considered, which will allow obtaining more complete information and establishing more stringent dependences …
Coupled Oscillators: Protein And Acoustics,
2022
New Jersey Institute of Technology
Coupled Oscillators: Protein And Acoustics, Angelique N. Mcfarlane
Theses
This work encompassed three different vibrational energy transfer studies of coupled resonators (metal, topological, and microtubule comparison) inspired by the lattices of microtubules from regular and cancerous cells. COMSOL Multiphysics 5.4 was utilized to design the experiment. The simulation starts with an acoustic pressure study to examine the vibrational modes present in coupled cylinders, representing α-, β-tubulin heterodimers. The Metal Study consisted of 3 models (monomer, dimer, and trimer) to choose the correct height (40 mm) and mode (Mode 1) for study. The Topological Study was run to predict and understand how the lattice structure changes over a parametric sweep …
Continuous, Non-Destructive Detection Of Surface Bacterial Growth With Bioinspired Vascularized Polymers,
2022
University of Maine
Continuous, Non-Destructive Detection Of Surface Bacterial Growth With Bioinspired Vascularized Polymers, Brandon Dixon
Electronic Theses and Dissertations
Reducing or eliminating bacteria on surfaces is vital for medical devices, drinking water quality, and industrial processes. Evaluating surface bacterial growth at buried interfaces can be problematic due to the time-consuming disassembly process required for obtaining standard surface samples. In this work, a continuous, non-destructive, and reusable method was developed to detect surface bacterial growth at buried interfaces. Inspired by vascular systems in nature that permit chemical communication between the surface and underlying tissues of an organism, bacterial-specific signals diffusing from cells on the surface were detected in channels filled with an inert carrier fluid embedded in a polymer matrix. …
Characterization Of Thermal Gelation Properties In Bioresorbable Thermally Activated Hydrogel Polymers For Hernia Surgery Applications,
2022
Clemson University
Characterization Of Thermal Gelation Properties In Bioresorbable Thermally Activated Hydrogel Polymers For Hernia Surgery Applications, Alexander Mayfield
All Theses
Hydrogel adhesives are a new class of materials with excellent biocompatibility, which makes them very attractive for biomaterial applications. It has been previously shown that Tetronic T1107, a four-arm poly (propylene oxide)-poly (ethylene oxide) (PPO-PEO) block copolymer, is useful as a chemical crosslinking thermo-responsive hydrogel for bioadhesive applications. The end groups of this polymer are modified with acrylate and N-hydroxysuccinimide (NHS) functional groups. The acrylate end group gives the polymer cohesive properties with long-range chemical crosslinking using dithiothreitol (DTT), while the NHS end group gives the polymer adhesive properties through bonding with amines found in organic tissue. It was found …
Development Of A Decellularized Hydrogel Composite And Its Application In A Novel Model Of Disc-Associated Low Back Pain In Female Sprague Dawley Rats,
2022
University of Nebraska-Lincoln
Development Of A Decellularized Hydrogel Composite And Its Application In A Novel Model Of Disc-Associated Low Back Pain In Female Sprague Dawley Rats, David Lillyman
Biological Systems Engineering--Dissertations, Theses, and Student Research
Chronic low back pain is a global socioeconomic crisis compounded by an absence of reliable, curative treatments. The predominant pathology associated with chronic low back pain is degeneration of intervertebral discs in the lumbar spine. During degeneration, nerves can sprout into the intervertebral disc tissue and be chronically subjected to inflammatory and mechanical stimuli, resulting in pain. Pain arising from the intervertebral disc, or disc-associated pain, is a complex, multi-faceted disorder which necessitates valid animal models to screen therapeutics and study pathomechanisms of pain.
While many research teams have created animal models of disc degeneration, the translation of these platforms …
Life Cycle Analysis And Implications Of 3d Printed Bio-Based Homes, A Preliminary Study,
2022
University of Maine - Main
Life Cycle Analysis And Implications Of 3d Printed Bio-Based Homes, A Preliminary Study, Claire Liedtka
Honors College
The purpose of this study is to evaluate the life cycle, embodied energy, and sustainability potential for large scale additive manufacturing of 3D printed homes. Additive manufacturing is the process of selectively depositing materials using a 3D printing process, which optimizes material usage and reduces waste. I performed a preliminary Cradle to Cradle Life Cycle Analysis for constructing 3D printed homes using a bio-based material, poly-lactic acid (PLA) filled with wood flour. For purposes of this study, I consider the Life Cycle Analysis to be the environmental assessment of each stage of a product’s life cycle, from material sourcing, processing, …
Chemistry And Functionality Of Plant Waxes: Applications Toward Postharvest Coatings,
2022
University of Tennessee, Knoxville
Chemistry And Functionality Of Plant Waxes: Applications Toward Postharvest Coatings, Francisco Miguel Angel Leyva Gutierrez
Doctoral Dissertations
The cuticle of all higher-plants is covered in lipidic layers of amorphous and crystalline waxes. The chemical composition and structure of cuticular waxes impart numerous functional properties to the surfaces of plants. Moreover, plant waxes are valuable industrial products with myriad applications; the postharvest coating of agricultural commodities for preservation serves as a salient example. There is an unfulfilled need in the agricultural sector for alternative wax materials to reduce reliance on imported waxes of botanical origin. Plant waxes are inherently complex mixtures composed of n-alkanes, as well as aliphatic alcohols, aldehydes, fatty acids, ketones, esters, and derivatives thereof. …
Insect Antennae As Bioinspirational Superstrong Fiber-Based Microfluidics,
2022
Clemson University
Insect Antennae As Bioinspirational Superstrong Fiber-Based Microfluidics, Griffin J. Donley
All Theses
Nature is frequently turned to for inspiration for the creation of new materials. Insect antennae are hollow, blood-filled fibers with complex shape, and are cantilevered at the head. The antenna is muscle-free, but the insect can controllably flex, twist, and maneuver it laterally. To explain this behavior, a comparative study of structural and tensile properties of the antennae of Periplaneta americana (American cockroach), Manduca sexta (Carolina hawkmoth), and Vanessa cardui (painted lady butterfly) was performed. These antennae demonstrate a range of distinguishable tensile properties, responding either as brittle fibers (Manduca sexta) or strain-adaptive fibers that stiffen when stretched (Vanessa cardui …
Limits Of Detection Of Mycotoxins By Laminar Flow Strips: A Review,
2022
Technological University Dublin
Limits Of Detection Of Mycotoxins By Laminar Flow Strips: A Review, Xinyi Zhao, Hugh J. Byrne, Christine M. O’Connor, James Curtin, Furong Tian
Articles
Mycotoxins are secondary metabolic products of fungi. They are poisonous, carcinogenic, and mutagenic in nature and pose a serious health threat to both humans and animals, causing severe illnesses and even death. Rapid, simple and low-cost methods of detection of mycotoxins are of immense importance and in great demand in the food and beverage industry, as well as in agriculture and environmental monitoring, and, for this purpose, lateral flow immunochromatographic strips (ICSTs) have been widely used in food safety and environmental monitoring. The literature to date describing the development of ICSTs for the detection of different types of mycotoxins using …
The Tin Man Needs A Heart:
A Proposed Framework For The
Regulation Of Bioprinted Organs,
2022
Fordham University School of Law
The Tin Man Needs A Heart: A Proposed Framework For The Regulation Of Bioprinted Organs, Linda Foit
Fordham Law Review
Each day, seventeen people die in the United States while waiting for an organ transplant. At least part of this need could be met by bioprinting, a technology that allows the on-demand production of custom-sized organs from a patient’s own cells. The field of bioprinting is progressing rapidly: the first bioprinted organs have already entered the clinic. Yet, developers of bioprinted organs face significant uncertainty as to how their potentially lifesaving products will be regulated—and by which government agency. Such regulatory uncertainty has the potential to decrease investment and stifle innovation in this promising technological field. This Note examines how …
Euplectella Aspergillum’S Natural Lattice Structure For Structural Design & Stability Landscape Of Thin Cylindrical Shells With Dimple Imperfections,
2022
University of Massachusetts Amherst
Euplectella Aspergillum’S Natural Lattice Structure For Structural Design & Stability Landscape Of Thin Cylindrical Shells With Dimple Imperfections, Zoe Y. Sloane
Masters Theses
The first portion of this thesis assesses the structural application of a bracing design inspired by the deep-sea sponge, Euplectella Aspergillum. Many studies have investigated the natural strength found in the unique skeletal structure of this species. The braced design inspired by the sponge features square frames with two sets of cross-braces that are offset from the corners of each frame, creating a pattern of open and closed cells. This study reports the results of multiple Finite Element Analysis (FEA) computations that compare the described bracing pattern to a more common bracing design used in structural design. The designs …
Sol-Gel Derived Bioceramic Poly(Diethyl Fumarate – Co – Triethoxyvinylsilane) Composite,
2022
The University of Western Ontario
Sol-Gel Derived Bioceramic Poly(Diethyl Fumarate – Co – Triethoxyvinylsilane) Composite, Aref Sleiman
Electronic Thesis and Dissertation Repository
Synthetic bone graft materials have become an increasingly popular choice for bone augmentation. Ceramic-based and polymer-based bone graft materials constitute the two main classes of synthetic bone graft materials. This study investigated the synthesis of novel bioactive composites for their potential use as bone graft biomaterials. Poly(diethyl fumarate-co-triethoxyvinylsilane)/bioceramic class II organic/inorganic hybrid biomaterials were synthesized via a sol gel process. These biomaterials were then reacted with an ammonium phosphate solution to prepare their respective composites. For the first time, we successfully synthesized sol-gel derived bioceramic poly(diethyl fumarate-co-triethoxyvinylsilane) composites. In vitro bioactivity evaluation of poly(diethyl fumarate-co-triethoxyvinylsilane)/bioceramic composites in simulated body fluid …
