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2021

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New Transformer Changer Static Characteristics Measuring Angle Silences Difference, Sultan Faizullayevich Аmirov, Nurulla Raxmatullayevich Yuldashev Dec 2021

New Transformer Changer Static Characteristics Measuring Angle Silences Difference, Sultan Faizullayevich Аmirov, Nurulla Raxmatullayevich Yuldashev

Chemical Technology, Control and Management

Presented the specific features of the new transformer converter, which measures the difference in angular displacement, and examines the nonlinearity levels of static characteristics, sensitivity and static characteristics. Studies have shown that in a new measuring device, where one of the two moving parts consists of a magnetic conductor made in the form of an Archimedean spiral made of ferromagnetic material, the balance of the magnetic bridge changes not only depending on the angle of rotation of it’s shoulder resistances. the current is disturbed by the change in the magnitude of the combined air gap depending on the angle of …

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A Proof Of A Generalization Of Niven's Theorem Using Algebraic Number Theory, Caroline Nunn Dec 2021

A Proof Of A Generalization Of Niven's Theorem Using Algebraic Number Theory, Caroline Nunn

Rose-Hulman Undergraduate Mathematics Journal

Niven’s theorem states that the sine, cosine, and tangent functions are rational for only a few rational multiples of π. Specifically, for angles θ that are rational multiples of π, the only rational values of sin(θ) and cos(θ) are 0, ±½, and ±1. For tangent, the only rational values are 0 and ±1. We present a proof of this fact, along with a generalization, using the structure of ideals in imaginary quadratic rings. We first show that the theorem holds for the tangent function using elementary properties of Gaussian integers, before extending the approach to other imaginary quadratic rings. We …

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Development Of Job Satisfaction Scale For Female Library Professionals: Case Study, Punam Chauhan, Aditya Tripathi, Mohd Shoaib Ansari Dec 2021

Development Of Job Satisfaction Scale For Female Library Professionals: Case Study, Punam Chauhan, Aditya Tripathi, Mohd Shoaib Ansari

Library Philosophy and Practice (e-journal)

It has been observed that there are no standard scales for measuring the job satisfaction of female library professionals. A scale would prove to be an excellent tool for developing policies for female library professionals. A questionnaire is prepared, which is further tested for reliability and validity, considered a standard scale. A survey method is used to collect the data for this purpose. The study suggests that job satisfaction variables are not unidirectional in their effect. The job itself can be a source of both satisfaction and dissatisfaction. The scale has good internal consistency. The scale has good internal consistency …

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A Key Component Of Continuing Professional Development In The Maritime Context, Olga Zavalniuk, Volodymyr Nesterenko, Inna Zavalniuk, Halyna Doshchenko Dec 2021

A Key Component Of Continuing Professional Development In The Maritime Context, Olga Zavalniuk, Volodymyr Nesterenko, Inna Zavalniuk, Halyna Doshchenko

International Maritime Lecturers' Association (IMLA) 2021 Joint Conference With IMEC32, ICERS15 and INSLC21

The maritime industry, one of the world’s most influential industries, is developing with a rapid speed. There is, therefore, a special need to find new approaches to prepare students to be ready for the changing realities of modern life. Taking into account generational peculiarities of information perception, new approaches were developed with the aim of building a number of competencies for future marine specialists in order to manage ships safely and efficiently. Ukrainian sailors are said to reflect a high level of training and professional skills, which is considered to be a distinguishing feature. Nevertheless, nowadays Ukrainian seafarers are facing …

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Measurement Of Differential Branching Fractions Of Inclusive B →Xuℓ+Νℓ Decays, L. Cao, W. Sutcliffe, R. Van Tonder, F. U. Bernlochner, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, K. Belous, J. Bennett, M. Bessner, T. Bilka, J. Biswal, A. Bobrov, M. Bračko Dec 2021

Measurement Of Differential Branching Fractions Of Inclusive B →Xuℓ+Νℓ Decays, L. Cao, W. Sutcliffe, R. Van Tonder, F. U. Bernlochner, I. Adachi, H. Aihara, D. M. Asner, T. Aushev, R. Ayad, V. Babu, S. Bahinipati, P. Behera, K. Belous, J. Bennett, M. Bessner, T. Bilka, J. Biswal, A. Bobrov, M. Bračko

Faculty and Student Publications

The first measurements of differential branching fractions of inclusive semileptonic B→Xuℓ+νℓ decays are performed using the full Belle data set of 711 fb-1 of integrated luminosity at the (4S) resonance and for ℓ=e, μ. With the availability of these measurements, new avenues for future shape-function model-independent determinations of the Cabibbo-Kobayashi-Maskawa matrix element |Vub| can be pursued to gain new insights in the existing tension with respect to exclusive determinations. The differential branching fractions are reported as a function of the lepton energy, the four-momentum-transfer squared, light-cone momenta, the hadronic mass, and the hadronic mass squared. They are obtained by subtracting …

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Supercongruences For Rigid Hypergeometric Calabi–Yau Threefolds, Ling Long, Fang Ting Tu, Noriko Yui, Wadim Zudilin Dec 2021

Supercongruences For Rigid Hypergeometric Calabi–Yau Threefolds, Ling Long, Fang Ting Tu, Noriko Yui, Wadim Zudilin

Faculty Publications

We establish the supercongruences for the fourteen rigid hypergeometric Calabi–Yau threefolds over Q conjectured by Rodriguez-Villegas in 2003. Our first method is based on Dwork's theory of p-adic unit roots and it allows us to establish the supercongruences between the truncated hypergeometric series and the corresponding unit roots for ordinary primes. The other method makes use of the theory of hypergeometric motives, in particular, adapts the techniques from the recent work of Beukers, Cohen and Mellit on finite hypergeometric sums over Q. Essential ingredients in executing the both approaches are the modularity of the underlying Calabi–Yau threefolds and a p-adic …

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Intercomparison Of Salinity Products In The Beaufort Gyre And Arctic Ocean, Sarah B. Hall, Bulusu Subrahmanyam, James H. Morison Dec 2021

Intercomparison Of Salinity Products In The Beaufort Gyre And Arctic Ocean, Sarah B. Hall, Bulusu Subrahmanyam, James H. Morison

Faculty Publications

Salinity is the primary determinant of the Arctic Ocean’s density structure. Freshwater accumulation and distribution in the Arctic Ocean have varied significantly in recent decades and certainly in the Beaufort Gyre (BG). In this study, we analyze salinity variations in the BG region between 2012 and 2017. We use in situ salinity observations from the Seasonal Ice Zone Reconnaissance Surveys (SIZRS), CTD casts from the Beaufort Gyre Exploration Project (BGP), and the EN4 data to validate and compare with satellite observations from Soil Moisture Active Passive (SMAP), Soil Moisture and Ocean Salinity (SMOS), and Aquarius Optimally Interpolated Sea Surface Salinity …

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Predicting Emergency Repairs Using Classification Method, Jacqueline Tan, Qing Zhang, Sia Wang Ying, Yutong Qin Dec 2021

Predicting Emergency Repairs Using Classification Method, Jacqueline Tan, Qing Zhang, Sia Wang Ying, Yutong Qin

The Plymouth Student Scientist

This paper discusses how each explanatory variable affects the possibility of having an emergency repair to people’s home with the help of machine learning. Here, the outcome variable is binary. The aim of this is to determine whether increasing the frequency of routine repairs would decrease the frequency of emergency repairs, and the predicted probability of having an emergency repair based on the variable statuses for each property. Data exploratory is first carried out to understand and simplify the dataset obtained from a Housing Association. Statistical models such as logistic regression, decision tree, random forest, linear discriminant analysis and k-nearest …

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Constrained Portfolio Optimisation, Mohammad Alam Tahir Dec 2021

Constrained Portfolio Optimisation, Mohammad Alam Tahir

The Plymouth Student Scientist

Portfolio optimisation is an important problem in finance; it allows investors to manage their investments effectively. This paper considers finding the efficient frontier associated with the mean-variance portfolio optimisation (unconstrained) problem. We then extend the mean-variance model to include cardinality constraints (resulting in an NPHard problem) that limits the number of assets in a portfolio. We discuss different types of algorithms that one can use for finding the optimal portfolios, implementing a meta-heuristic genetic algorithm technique to solve the unconstrained and cardinality constrained problems. Finally, we improve our solutions by altering the crossover and mutation probabilities in the genetic algorithm …

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The Effect Of Onshore Wind On Wave Overtopping Of A Vertical Sea Wall, Sarah Durbridge Dec 2021

The Effect Of Onshore Wind On Wave Overtopping Of A Vertical Sea Wall, Sarah Durbridge

The Plymouth Student Scientist

Strong winds can produce overtopping rates that are considerably higher than predicted by the EurOtop formulae, which do not make provision for wind. However, no detailed industry guidance exists about the quantification of those wind effects. Physical modelling tests (scale 1:21) investigated how the mean rate of overtopping changed with wave frequency under the influence of various wind speeds. The nature and quantity of overtopping was found to be strongly related to the frequency of the incident wave. The wind had a significant effect on the mean overtopping rate, with the most pronounced effect occurring when the overtopping was at …

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An Isotropic Neo-Hookean Finite Element Model Of Healthy Elastic Arterial Walls Within Commercial Software, Reece Ambrose Dec 2021

An Isotropic Neo-Hookean Finite Element Model Of Healthy Elastic Arterial Walls Within Commercial Software, Reece Ambrose

The Plymouth Student Scientist

A non-linear isotropic finite element model of an elastic arterial wall is developed within the ANSYS commercial software package. While progressively increasing complexity of the model, it is validated with analytical theory. Geometric nonlinearity is investigated and an iterative convergence method for the calculation of a solution-dependent axial force, which increases with artery deformation, is presented. Neo-Hookean hyperelastic material models are fitted to existing uniaxial, biaxial, and shear experimental data from literature for both rubber and polyurethane elastomer to introduce material nonlinearity into the arterial wall model. A mesh independence study was performed to determine a suitable mesh and the …

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Scale Model Behaviour And Float Geometry Influence On An Oscillating Water Column System, Daniel Cresswell Dec 2021

Scale Model Behaviour And Float Geometry Influence On An Oscillating Water Column System, Daniel Cresswell

The Plymouth Student Scientist

A numerical model based on a 1:60 scale Lazy-S Mooring Line has been developed using the dynamic analysis software OrcaFlex, to determine the software’s capabilities when analysing discretized scale models, and to quantify the effect that varying float surface geometry has on mooring line system damping. Static analysis was performed, followed by dynamic analysis, based on experimental data from physical testing in the University of Plymouth 35m Sediment Flume tank, against two distinct float shapes with equivalent hydrostatic properties but aspect ratio variance perpendicular to fluid flow. The impact of scale modelling on static line forces, effective tension and driving …

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What Effect Do Government Policies Have On The Transmission Of Covid-19?, Emily Prestige Dec 2021

What Effect Do Government Policies Have On The Transmission Of Covid-19?, Emily Prestige

The Plymouth Student Scientist

This investigation aimed to determine the effect of government policies on the transmission of COVID-19 during the period 30/01/2020 – 03/01/2021. This investigation used qualitative data from policy legislation and journals and quantitative data from official government pandemic figures. It also used central factors of successful government approaches to assess the efficacy of the UK Government strategy. The measure used to monitor transmission rates is the instantaneous reproduction number Rt. I have used summary statistics, data visualisation, and time series representations to conduct exploratory data analyses. I also investigated the change in testing capacity and positivity rate over time to …

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Scarcity Or Economic Insecurity? Two Yardsticks For Measuring Capitalism’S Performance, Costas Panayotakis Dec 2021

Scarcity Or Economic Insecurity? Two Yardsticks For Measuring Capitalism’S Performance, Costas Panayotakis

Publications and Research

This article argues that capitalism’s relationship to economic insecurity is as important for the evaluation of that system as its relationship to scarcity. Critically analyzing the neoclassical and Marxist focus on capitalism’s relationship to scarcity, the article describes how capitalism’s relationship to economic insecurity offers a more cogent elaboration of these traditions’ shared belief that the economic system should serve people. In particular, while critical of the neoclassical portrayal of capitalism as a system using scarce resources efficiently, this paper also argues, against Marxism, that an alternative to capitalism might be preferable even if scarcity is not abolished.

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Review—Concentration Measurements In Molten Chloride Salts Using Electrochemical Methods, Tyler Williams, Rankin Shum, Devin Rappleye Dec 2021

Review—Concentration Measurements In Molten Chloride Salts Using Electrochemical Methods, Tyler Williams, Rankin Shum, Devin Rappleye

Faculty Publications

The electrochemical measurement of concentration in molten chloride salts is a valuable tool for the control of existing and potential industrial processes, recycling of precious materials and energy production. The electrochemical techniques commonly used to measure concentration and each techniques’ associated theory are discussed. Practices which improve measurement accuracy and precision are set forth. Exceptionally accurate and precise measurements published in the literature are evaluated based on their performance in specified concentration ranges. The strengths and weaknesses of the most accurate measurements are briefly explored. Chronopotentiometry (CP) and square wave voltammetry (SWV) are accurate and precise with low concentration measurements. …

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Negative Order Kdv Equation With No Solitary Traveling Waves, Miguel Rodriguez, Jing Li, Zhijun Qiao Dec 2021

Negative Order Kdv Equation With No Solitary Traveling Waves, Miguel Rodriguez, Jing Li, Zhijun Qiao

School of Mathematical & Statistical Sciences Faculty Publications

We consider the negative order KdV (NKdV) hierarchy which generates nonlinear integrable equations. Selecting different seed functions produces different evolution equations. We apply the traveling wave setting to study one of these equations. Assuming a particular type of solution leads us to solve a cubic equation. New solutions are found, but none of these are classical solitary traveling wave solutions.

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Analysis Of Some Farm Driving Variables And Its Relation With Milk Production In A Pastoral Dairy Farm Of Buenos Aires, Argentina, J. L. Rossi, A. Ayala Torales, G. Acosta, V. A. Deregibus Dec 2021

Analysis Of Some Farm Driving Variables And Its Relation With Milk Production In A Pastoral Dairy Farm Of Buenos Aires, Argentina, J. L. Rossi, A. Ayala Torales, G. Acosta, V. A. Deregibus

IGC Proceedings (1977-2023)

The quantity of milk solids produced determines a dairy farm income and contributes to its profit. Total pasture production, forage quality and herd consumption are factors to be managed in this production system. The outcomes of two years were analyzed. Primary production showed its dependence on climatic conditions and use of technological inputs. Forage quality was promoted through interseeding legumes, applying fertilizer and maintaining the pasture young and leafy. Total forage removed by the herd was similar in both years although pasture production decreased. It was possible to cope with seasonal variations in forage production, by varying the grazing pressure …

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Effect Of Energetic Supplementation On Forage Losses In An Oat And Italian Ryegrass Pasture Under Continuous Grazing, A. Frizzo, Marta G. Da Rocha, M. R. Freitas Dec 2021

Effect Of Energetic Supplementation On Forage Losses In An Oat And Italian Ryegrass Pasture Under Continuous Grazing, A. Frizzo, Marta G. Da Rocha, M. R. Freitas

IGC Proceedings (1977-2023)

The experiment was conducted at UFSM-RS to quantify herbage losses in oat and Italian ryegrass mixture under continuous grazing by beef heifers. A continuous grazing method with variable stocking rate was utilized to maintain the same herbage mass, 1500 kg DM/ha, in all treatments. The treatments consisted of levels of energetic supplement (0, 0.7 and 1.4% of LW/day). The pasture was evaluated every 28 days, when forage not suitable for grazing was collected in points previously marked in experimental area. The daily losses of herbage mass were of 22.32, 18.98 and 21.16 kg of DM/ha/day, equivalent to 2.61, 1.91 and …

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Dynamics And Production Of Forage In Winter Pasture Under Continuous Grazing With Energetic Supplementation, A. Frizzo, M. R. Freitas, Marta G. Da Rocha Dec 2021

Dynamics And Production Of Forage In Winter Pasture Under Continuous Grazing With Energetic Supplementation, A. Frizzo, M. R. Freitas, Marta G. Da Rocha

IGC Proceedings (1977-2023)

This experiment was carried out at Federal University of Santa Maria, from July 09 to November 12, 1999 to evaluate the dynamics and production of forage of oat (Avena strigosa Schreb) and italian ryegrass (Lolium multiflorum Lam) mixture. The grazing system used was continuous with variable stocking rate to maintain 1500kg/ha of herbage mass in all treatments. The heifers were subjected to different levels of energetic supplementation. They are 0, 0.7 and 1.4% of LW/day. The pasture of oat and italian ryegrass presented an accumulation rate of 45.7, 55.1 and 50.0 kg of DM/ha /day and a total …

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Rotational Grazing Increases Wool And Lamb Production From Phalaris-Subterranean Clover Pastures In South Eastern Australia, A. N. Thompson, D. Borg, J. F. Graham, J. Lamb, G. R. Saul Dec 2021

Rotational Grazing Increases Wool And Lamb Production From Phalaris-Subterranean Clover Pastures In South Eastern Australia, A. N. Thompson, D. Borg, J. F. Graham, J. Lamb, G. R. Saul

IGC Proceedings (1977-2023)

Wool and lamb production from different grazing systems was compared in a Mediterranean environment near Hamilton in southeastern Australia. The grazing systems were based on combinations of fertiliser inputs and grazing methods that could promote the growth and persistence of phalaris (Phalaris aquatica) and increase animal production compared to ‘typical’ unimproved pastures. In the first 2 years of this experiment, the most productive systems more than doubled ewe stocking rate and wool production, and more than trebled lamb production per hectare, compared to ‘typical’ unimproved pasture, low fertility, set-stocked systems. The change to a well fertilised phalaris/subterranean clover …

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Increasing Awareness Of Inclusive Stem Education Through A College-Level Student Research Group, Sami Kahn, Tiffany Agyarko, Grace Lanouette, Sean Lee, Courteney Wiredu Dec 2021

Increasing Awareness Of Inclusive Stem Education Through A College-Level Student Research Group, Sami Kahn, Tiffany Agyarko, Grace Lanouette, Sean Lee, Courteney Wiredu

Journal of Science Education for Students with Disabilities

The underrepresentation of persons with disabilities in STEM reflects not only a moral failing in society’s commitment to equity but also a practical dilemma as science benefits from the contributions of people with diverse perspectives. While teacher education programs attempt to address equity at the K-12 level, societal biases and misconceptions about who is “able” in science present persistent barriers for people with disabilities throughout the STEM pipeline, in higher education, employment, and beyond. How can we ensure that students with disabilities will encounter professors, employers, coworkers, and peers who are supportive of their efforts in STEM? To address this …

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Application Of Competitive Intelligence For Insular Territories: Automatic Analysis Of Scientific And Technology Trends To Fight The Negative Effects Of Climate Change, Henri Dou, Pierre Fournie Dec 2021

Application Of Competitive Intelligence For Insular Territories: Automatic Analysis Of Scientific And Technology Trends To Fight The Negative Effects Of Climate Change, Henri Dou, Pierre Fournie

International Journal of Islands Research

Islands are fragile territories because of their geographical position. As a result, climate impacts can have serious consequences, of which some are irreversible. Therefore, it is necessary to allow insular territories to benefit from the latest scientific and technological advances in combating climate effects. The current article shows how to deal with automatic analysis of scientific information on the one hand, but also its applications via patents. We will analyse the latest scientific results as well as their possible applications using patent analysis. We will also focus on experts, laboratories, and leading companies, that are active on the field. The …

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Climate Change-Induced Effects On Beach Degradation And Tourist Behaviour: A Review Of Previous Studies With Potential In An Island Tourism Context, Yen E. Lam González, Carmen Garcia, Matias M. González Hernández, Carmelo J. Leon Dec 2021

Climate Change-Induced Effects On Beach Degradation And Tourist Behaviour: A Review Of Previous Studies With Potential In An Island Tourism Context, Yen E. Lam González, Carmen Garcia, Matias M. González Hernández, Carmelo J. Leon

International Journal of Islands Research

This article conducts a qualitative meta-analysis of papers addressing the topic of climate change impacts on beach loss and degradation, and its relation to tourist behaviour (destination choice, willingness to re-visit, expenditure and willingness to pay). The main aim is to identify values that can be used in future research works in the context of island tourism. We found that the strong specialisation and fragmentation of data and methods limit the transferability potential of previous research analysing climate-induced effects on beaches and tourist behaviour. Researchers from different fields bring their own conceptual models which often address similar problems but use …

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On The Stability Of First Order Ordinary Differential Equation With A Nonlocal Condition, Ebtisam Omer Bin-Taher Dec 2021

On The Stability Of First Order Ordinary Differential Equation With A Nonlocal Condition, Ebtisam Omer Bin-Taher

Hadhramout University Journal of Natural & Applied Sciences

In this paper we study the existence and uniqueness of solution for the first order differential equation,𝑑𝑥𝑑𝑡 + 𝑓(𝑡,𝑥(𝑡))=0,𝑡∈[0,𝑇] with the nonlocal condition 𝑥(1)+ 𝐼𝛾 𝑥(𝑡)|𝑡=𝑡𝑜=𝑥𝑜 ., then we prove that the solution is uniformly stable

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The Generalized Q-Analogue Hermite Matrix Polynomials Of Two Variables, Fadhl Saleh Nasser Alsarahi Dec 2021

The Generalized Q-Analogue Hermite Matrix Polynomials Of Two Variables, Fadhl Saleh Nasser Alsarahi

Hadhramout University Journal of Natural & Applied Sciences

In this paper, we introduce the q-analogue generalized Hermite matrix polynomials of two variables. Some recurrence relations for these q-polynomials are derived.

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Seventh And Twelfth-Order Iterative Methods For Roots Of Nonlinear Equations, Hassan Mohamed Bawazir Dec 2021

Seventh And Twelfth-Order Iterative Methods For Roots Of Nonlinear Equations, Hassan Mohamed Bawazir

Hadhramout University Journal of Natural & Applied Sciences

This study presents two iterative methods, based on Newton’s method, to attain the numerical solutions of nonlinear equations. We prove that our methods have seven and twelve orders of convergence. The analytical investigation has been established to show that our schemes have higher efficiency indexes than some recent methods. Numerical examples are executed to investigate the performance of the proposed schemes. Moreover, the theoretical order of convergence is verified on the numerical examples.

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Spatially Distributed Infection Increases Viral Load In A Computational Model Of Sars-Cov-2 Lung Infection, Melanie E. Moses, Steven Hofmeyr, Judy L. Cannon, Akil Andrews, Rebekah Gridley, Monica Hinga, Kirtus Leyba, Abigail Pribisova, Vanessa Surjadidjaja, Humayra Tasnim, Stephanie Forrest Dec 2021

Spatially Distributed Infection Increases Viral Load In A Computational Model Of Sars-Cov-2 Lung Infection, Melanie E. Moses, Steven Hofmeyr, Judy L. Cannon, Akil Andrews, Rebekah Gridley, Monica Hinga, Kirtus Leyba, Abigail Pribisova, Vanessa Surjadidjaja, Humayra Tasnim, Stephanie Forrest

Pathology Research and Scholarship

A key question in SARS-CoV-2 infection is why viral loads and patient outcomes vary dramatically across individuals. Because spatial-temporal dynamics of viral spread and immune response are challenging to study in vivo, we developed Spatial Immune Model of Coronavirus (SIMCoV), a scalable computational model that simulates hundreds of millions of lung cells, including respiratory epithelial cells and T cells. SIMCoV replicates viral growth dynamics observed in patients and shows how spatially dispersed infections can lead to increased viral loads. The model also shows how the timing and strength of the T cell response can affect viral persistence, oscillations, and control. …

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The Weekly Challenger, December 23, 2021, The Weekly Challenger, Et Al Dec 2021

The Weekly Challenger, December 23, 2021, The Weekly Challenger, Et Al

Weekly Challenger Newspaper Collection

The December 23, 2021, issue of The Weekly Challenger.

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Splashing Of Large Helium Nanodroplets Upon Surface Collisions, Paul Martini, Simon Albertini, Felix Laimer, Miriam Meyer, Michael Gatchell, Olof E. Echt, Fabio Zappa, Paul Scheier Dec 2021

Splashing Of Large Helium Nanodroplets Upon Surface Collisions, Paul Martini, Simon Albertini, Felix Laimer, Miriam Meyer, Michael Gatchell, Olof E. Echt, Fabio Zappa, Paul Scheier

Faculty Publications

In the present work we observe that helium nanodroplets colliding with surfaces can exhibit splashing in a way that is analogous to classical liquids. We use transmission electron microscopy and mass spectrometry to demonstrate that neutral and ionic dopants embedded in the droplets are efficiently backscattered in such events. High abundances of weakly bound He-tagged ions of both polarities indicate a gentle extraction mechanism of these ions from the droplets upon collision with a solid surface. This backscattering process is observed for dopant particles with masses up to 400 kilodaltons, indicating an unexpected mechanism that effectively lowers deposition rates of …

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Improved Pill Splitter: An Analysis Of 3&4-Point Bending To Split Pills, Isaac Sasser, Andrew Brown, Minju Lee Dec 2021

Improved Pill Splitter: An Analysis Of 3&4-Point Bending To Split Pills, Isaac Sasser, Andrew Brown, Minju Lee

Mechanical Engineering and Materials Science Independent Study

There is a niche in the pill splitting industry for a more efficient pill splitter. To fill this niche we explore various applications of 3-Point and 4-Point bending to pill splitting. All designs are 3D printed. Due to the elastic nature of PLA plastic, the reality that 3-Point bending may cause pills to fail in compression (as revealed by FEM analysis), and the difficulty in managing volume constraints in a 3-Point bending design, 4-Point bending is considered as a viable option for pill splitting. However, after testing and analysis, the 4-Point bending prototypes generated were able to break pills, but …

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