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Micropolar Fluid Flow Between A Non-Porous Disk And A Porous Disk With Slip: Keller-Box Solution, Ashwini Bhat, Nagaraj N. Katagi Mar 2020

Micropolar Fluid Flow Between A Non-Porous Disk And A Porous Disk With Slip: Keller-Box Solution, Ashwini Bhat, Nagaraj N. Katagi

Open Access archive

In the present analysis, a steady, laminar, incompressible and two-dimensional micropolar fluid flow between a porous disk and a nonporous disk is considered. Similarity transformations are suitably applied to reduce the complex governing equations into a set of nonlinear boundary value problems with velocity slip conditions. An efficient finite difference technique called Keller-box method is employed to obtain the numerical solutions. The aim of this investigation is to study the influence of non-zero tangential slip velocity on velocity, microrotation profiles, and shear stress for different pertinent parameters. The results are then presented in the form of tables and graphs to …


Child-Rearing Practices Among Migrant Mothers Of South India: A Mixed Method Study, D. S. Anupama, Baby S. Nayak, Jyothi Chakrabarty Mar 2020

Child-Rearing Practices Among Migrant Mothers Of South India: A Mixed Method Study, D. S. Anupama, Baby S. Nayak, Jyothi Chakrabarty

Open Access archive

Objectives: To assess the child-rearing practices among migrant mothers of under-five children and to analyze the factors influencing the child-rearing practices among these mothers. Methods: A sequential explanatory mixed method study design was used where quantitative (cross-sectional survey) phase was followed the qualitative (grounded theory) phase. The survey was undertaken among the representative sample of 320 migrant mothers in the selected migrant areas of Shivamogga District of Karnataka State. Quantitative Data was collected by using a structured interview wherein qualitative data was collected by conducting an in-depth interview. Results: The study revealed that 255 (79.7%) subjects had scored average in …


How To Be An Online Student: Success Tips, Peggy Semingson, Karabi Bezboruah Mar 2020

How To Be An Online Student: Success Tips, Peggy Semingson, Karabi Bezboruah

Curriculum and Instruction Faculty Publications - Archive

No abstract provided.


A Comparison Between Valsalva Maneuver And Eutectic Mixture Of Local Anaesthetic To Relieve Venepuncture Pain, Shivani Dixit, Sunil B. Vasudevarao, Shaila Kamath Mar 2020

A Comparison Between Valsalva Maneuver And Eutectic Mixture Of Local Anaesthetic To Relieve Venepuncture Pain, Shivani Dixit, Sunil B. Vasudevarao, Shaila Kamath

Open Access archive

Venepuncture is a painful but necessary prerequisite for safe administration of anaesthesia. Various pharmacological and non pharmacological methods have been attempted to decrease venepuncture pain. EMLA (eutectic mixture of 2.5% lidocaine and 2.5% prilocaine) cream facilitates the local absorption of both constituent drugs without organic solvents, resulting in high concentrations of lidocaine/prilocaine in the skin. Valsalva maneuver reduces the severity of pain associated with venepuncture, via stimulation of the vagus nerve. We conducted an observational study to evaluate the efficacy of Valsalva maneuver and EMLA cream in decreasing venepuncture pain. After obtaining approval from the Indian Ethics Committee, 129 American …


Evaluation Of Eustachian Tube Ct Measurements In Patients With Com And Cholesteatoma, Shan Babu, Priya Susan, Pendem Saikiran Mar 2020

Evaluation Of Eustachian Tube Ct Measurements In Patients With Com And Cholesteatoma, Shan Babu, Priya Susan, Pendem Saikiran

Open Access archive

Chronic otitis media [COM] is a long-term infection of middle ear and mastoid cavity with frequent ear discharges through a tympanic perforation. Eustachian tube measurements done using High Resolution Computed Tomography [HRCT] would be helpful in determining the influence of it in the development of COM and cholesteatoma. The aim of study is to compare the ET measurements in patients having COM without Cholesteatoma, COM with Cholesteatoma and normal ears. This is a retrospective study. A total of 79 patients (47 males, 32 females, age range: 15-81 years) referred for temporal bone from June 2016 to June 2018 were included. …


Mylohyoid Foramen Of Mandible: A Rare Exit Point Of Intra-Mandibular Origin Of Nerve To Mylohyoid, Satheesha B. Nayak, K. V. Soumya Mar 2020

Mylohyoid Foramen Of Mandible: A Rare Exit Point Of Intra-Mandibular Origin Of Nerve To Mylohyoid, Satheesha B. Nayak, K. V. Soumya

Open Access archive

Nerve to mylohyoid is a branch of inferior alveolar nerve. It arises in the infratemporal fossa and runs in the mylohyoid groove of mandible to reach the submandibular region, where it supplies the anterior belly of digastric and mylohyoid muscles. Though sensory distribution of this nerve have been described, it is predominantly a motor nerve. Here, a rare intra-mandibular origin of nerve to mylohyoid has been presented. This nerve arose from the inferior alveolar nerve inside the mandible and came out to the submandibular region by passing through a small foramen present on the medial surface of the body of …


Surgical Site Dressing Practice, S. Sijimol, Leena Sequira, Prima Jenevive Jyothi D'Souza, Vandana Kalwaje Eshwara Mar 2020

Surgical Site Dressing Practice, S. Sijimol, Leena Sequira, Prima Jenevive Jyothi D'Souza, Vandana Kalwaje Eshwara

Open Access archive

Background: Surgical site infections (SSI) compose of 20% of all healthcare-associated infections. Materials and methods: Cross-sectional survey was conducted to assess the surgical site dressing practices. Event sampling was adopted, and 88 dressing procedures were observed. The perceived barriers in following infection control measures were assessed by questionnaire. Results: There was a lack of aseptic wound dressing practices among healthcare professionals. Heavy workload and inadequate staff to assist in dressing procedures were considered as the major barriers. Conclusion: Evidence-Based practice guidelines should be established, and healthcare professionals should adhere to the infection control measures to reduce the incidence of SSI.


Metabolic Syndrome Risk Assessment Among Adults In Udupi District, Karnataka, Namratha N. Pai, Garg Meenakshi Mar 2020

Metabolic Syndrome Risk Assessment Among Adults In Udupi District, Karnataka, Namratha N. Pai, Garg Meenakshi

Open Access archive

Background: It is estimated that around 20–25% of world's adult population have metabolic syndrome. Moreover, the prevalence is also high among south Asians and Indians and about one third of the urban population in large cities has varying degrees of Metabolic Syndrome.5 Objectives: To study the prevalence among adults who are at risk of metabolic syndrome, gender difference of the same. To study the association of socio-demographic factors, family history and personal history, biochemical parameters, lifestyle addictions, dietary pattern and adequacy with the risk of metabolic syndrome. Methodology: A descriptive study was undertaken in Udupi District, Karnataka, India in which …


Is It Possible To Discern Striga Weed (Striga Hermonthica) Infestation Levels In Maize Agro-Ecological Systems Using In-Situ Spectroscopy?, Bester Tawona Mudereri, Timothy Dube, Saliou Niassy, Emily Kimathi, Tobias Landmann, Zeyaur Khan, Elfatih M. Abdel-Rahman Mar 2020

Is It Possible To Discern Striga Weed (Striga Hermonthica) Infestation Levels In Maize Agro-Ecological Systems Using In-Situ Spectroscopy?, Bester Tawona Mudereri, Timothy Dube, Saliou Niassy, Emily Kimathi, Tobias Landmann, Zeyaur Khan, Elfatih M. Abdel-Rahman

All Peer-Reviewed Publications

The invasion by Striga in most cereal crop fields in Africa has posed a significant threat to food security and has caused substantial socioeconomic losses. Hyperspectral remote sensing is an effective means to discriminate plant species, providing possibilities to track such weed invasions and improve precision agriculture. However, essential baseline information using remotely sensed data is missing, specifically for the Striga weed in Africa. In this study, we investigated the spectral uniqueness of Striga compared to other co-occurring maize crops and weeds. We used the in-situ FieldSpec® Handheld 2™ analytical spectral device (ASD), hyperspectral data and their respective narrow-band indices …


Predicting The Spatial Suitability Distribution Of Moringa Oleifera Cultivation Using Analytical Hierarchical Process Modelling, T. Tshabalala, B. Ncube, H. P. Moyo, E. M. Abdel-Rahman, O. Mutanga, A. R. Ndhlala Mar 2020

Predicting The Spatial Suitability Distribution Of Moringa Oleifera Cultivation Using Analytical Hierarchical Process Modelling, T. Tshabalala, B. Ncube, H. P. Moyo, E. M. Abdel-Rahman, O. Mutanga, A. R. Ndhlala

All Peer-Reviewed Publications

Moringa oleifera Lam, often grows well under cultivation in the tropics and sub-tropics. It does well in sandy to clayey soils and tolerates low rainfall. The plant is well-known for its nutritional and medicinal properties, hence it is fast gaining popularity in South Africa and the rest of the world. The objective of this study was to predict the suitable areas for cultivating M. oleifera in South Africa using climate and edaphic variables that significantly affect its growth and development. We used an Analytical Hierarchical Process (AHP) and Geographic Information System (GIS) weight function to assign suitability weights to criteria …


Faceshield Files - Version 1, Keith Johnson, Bill Hemphill Mar 2020

Faceshield Files - Version 1, Keith Johnson, Bill Hemphill

ETSU COVID-19 Information [2020-2023]

The face shield was designed by Dr. Keith Johnson and Dr. Bill Hemphill during the COVID-19 Pandemic (circa 2020) with the intent to create a product that could be assembled with supplies available in hardware stores without the use of 3D printed technology.

More information about this project can be found in this archived news article.


Evaluation Of Indirect Pulp Capping Using Pozzolan-Based Cement (Endocem-Zr®) And Mineral Trioxide Aggregate - A Randomized Controlled Trial, Ankita Sharma, Manuel Thomas, Neeta Shetty, N. Srikant Mar 2020

Evaluation Of Indirect Pulp Capping Using Pozzolan-Based Cement (Endocem-Zr®) And Mineral Trioxide Aggregate - A Randomized Controlled Trial, Ankita Sharma, Manuel Thomas, Neeta Shetty, N. Srikant

Open Access archive

Background: Pulp capping should always be considered as the primary treatment of choice for teeth without irreversible pulpitis in lesions approaching dental pulp. The predictability of vital pulp therapy has improved with the introduction of newer bioceramic materials. Aim: The purpose of this randomized controlled trial was to compare the outcomes of mineral trioxide aggregate (MTA) (Angelus, Londrina, Brazil) and a pozzolan-based cement (ENDOCEM-Zr®[Maruchi, Wonju, Korea]) as an indirect pulp capping (IPC) material. Materials and Methods: IPC was performed in forty patients who were randomly divided into ENDOCEM-Zr®and MTA groups. The outcome was assessed using clinical and radiographic tests at …


Recurrent Bi-Allelic Splicing Variant C.454+3a4g In Trappc4 Is Associated With Progressive Encephalopathy And Muscle Involvement, Parneet Kaur, Rajagopal Kadavigere, Katta Mohan Girisha, Anju Shukla Mar 2020

Recurrent Bi-Allelic Splicing Variant C.454+3a4g In Trappc4 Is Associated With Progressive Encephalopathy And Muscle Involvement, Parneet Kaur, Rajagopal Kadavigere, Katta Mohan Girisha, Anju Shukla

Open Access archive

No abstract provided.


Gender Equity In Oncology: Past, Present, And Future!, Sharada Mailankody, Jyoti Bajpai Mar 2020

Gender Equity In Oncology: Past, Present, And Future!, Sharada Mailankody, Jyoti Bajpai

Open Access archive

No abstract provided.


Cytogenetics And Revised International Staging System (R-Iss): Risk Stratification In Multiple Myeloma-A Retrospective Study In Indian Population, Chethana Babu K. Udupa, Karthik Subramanaya Udupa, Ananth Pai, Prathika Sherigar Mar 2020

Cytogenetics And Revised International Staging System (R-Iss): Risk Stratification In Multiple Myeloma-A Retrospective Study In Indian Population, Chethana Babu K. Udupa, Karthik Subramanaya Udupa, Ananth Pai, Prathika Sherigar

Open Access archive

Background & Objective: Cytogenetic abnormalities in Multiple myeloma (MM) has emerged as the most important factor that determine the prognosis and survival. Fluorescence in situ hybridization (FISH) can detect a greater number of cytogenetic abnormalities as compared to conventional karyotyping and hence has become the standard test in determining genetic abnormalities in MM. The present study was planned as there is an unmet need to find out various cytogenetic abnormalities and to implement them in prognostic stratification by Revised International Staging System (R-ISS) among Indian population. Methods: A single institution retrospective study was conducted among a total of 117 patients …


Comparative Evaluation Of Three Different Toothpastes On Remineralization Potential Of Initial Enamel Lesions: A Scanning Electron Microscopic Study, T. Chandru, M. Yahiya, Faizal Peedikayil, N. Dhanesh Mar 2020

Comparative Evaluation Of Three Different Toothpastes On Remineralization Potential Of Initial Enamel Lesions: A Scanning Electron Microscopic Study, T. Chandru, M. Yahiya, Faizal Peedikayil, N. Dhanesh

Open Access archive

The early enamel lesions are reversible as it is a process involving mineral transactions between the teeth and saliva. To evaluate the efficiency of three different tooth pastes on remineralization potential of initial enamel lesions using Vickers Micro hardness Test and Scanning electron microscopy. Materials and Methods: Artificial carious lesions were prepared in human enamel with demineralizing solution. The treatment agents included were Colgate sensitive plus® toothpaste, Regenerate enamel science™ toothpaste, BioRepair® toothpaste and control as Deionized water. All the samples were subjected to treatment solutions as per the pH cycling model for 12 days to simulate the daily oral …


Evaluation Of Chemical Disinfection And Microwave Irradiation On Denture Base Materials: An In Vitro Study, Rohit Kabra, Shobha Rodrigues, Umesh Pai, Ramya Shenoy Mar 2020

Evaluation Of Chemical Disinfection And Microwave Irradiation On Denture Base Materials: An In Vitro Study, Rohit Kabra, Shobha Rodrigues, Umesh Pai, Ramya Shenoy

Open Access archive

This study evaluated the effect of chemical disinfection and microwave irradiation on the surface hardness and roughness of two commercially available hard relining materials (Ufi Gel hard, GC Kooliner) and one denture base resin (Trevalon). Materials and Methods: A total of 72 specimens (n = 24) were divided into four groups. C: Not disinfected, Cl: disinfected with 4% chlorhexidine solution, Gl: disinfected with 2% glutaraldehyde solution, Mw: disinfected with microwave irradiation (650 W; 6 min). Hardness and roughness measurements were made after polymerisation, 1st day, 14th day and 28th day. Results: Ufi Gel hard showed an increased roughness after 1st …


Microbiological Evaluation Of Osteomyelitis With A Special Reference To Antibiotic Sensitivity Pattern Of Isolates From A Tertiary Care Hospital, Barnini Banerjee, Smitha S. Bhat, Chiranjay Mukhopadhyay, Anil K. Bhat Mar 2020

Microbiological Evaluation Of Osteomyelitis With A Special Reference To Antibiotic Sensitivity Pattern Of Isolates From A Tertiary Care Hospital, Barnini Banerjee, Smitha S. Bhat, Chiranjay Mukhopadhyay, Anil K. Bhat

Open Access archive

Epidemiological change in osteomyelitis had been observed for the past few years with a significant rise of chronic osteomyelitis by multidrug-resistant organisms (MDROs). It complicates antibiotic selection, and if not managed adequately, it results in amputation, sepsis, or death. This study was conducted for one year in a tertiary care hospital to identify the etiological agents and their response to antibiotics for the development of adequate management policy of osteomyelitis. Fifty seven patients were analysed, & the variables examined include epidemiological characteristics, risk factors, radiographic changes, histopathological features. Etiological agents were identified, and antimicrobial susceptibility testing was performed by an …


International Consortium For Personalized Medicine: An International Survey About The Future Of Personalized Medicine, Julien Venne, Ulrike Busshoff, Sebastian Poschadel, Robin Menschel Mar 2020

International Consortium For Personalized Medicine: An International Survey About The Future Of Personalized Medicine, Julien Venne, Ulrike Busshoff, Sebastian Poschadel, Robin Menschel

Open Access archive

The ICPerMed, international initiative promoting personalized medicine, has realized a survey among a group of experts, to define a common vision for the deployment of personalized medicine across healthcare systems until 2030. Materials & methods: ICPerMed defined five perspectives (p.4) and addressed an online questionnaire to 97 international experts to collect their views. Results: Seventy (72%) of the 97 experts effectively answered the survey from which 69 answers were exploitable. Respondents from a variety of international profiles approved the five proposed perspectives and reported required actions and best practices. Conclusion: There is a large consensus among experts directly involved in …


Short And/Or Long Laryngoscope Handle - 'Sandesh Combihandle', Sandesh Udupi Mar 2020

Short And/Or Long Laryngoscope Handle - 'Sandesh Combihandle', Sandesh Udupi

Open Access archive

No abstract provided.


Ibuprofen-Induced Localized Frontal And Temporal Forehead Swellings: A Rare Case Report, Aditi Chopra, Rachana Pappu, Karthik Sivaraman Mar 2020

Ibuprofen-Induced Localized Frontal And Temporal Forehead Swellings: A Rare Case Report, Aditi Chopra, Rachana Pappu, Karthik Sivaraman

Open Access archive

Ibuprofen, nonselective nonsteroidal anti-inflammatory drugs (NSAIDs), is one of the most commonly prescribed analgesics for managing musculoskeletal, orofacial, and postoperative pain after periodontal therapy. Although considered as one of the safest analgesic agents, the onset of adverse drug reactions after ibuprofen intake has been recently observed. The present report aims to highlight the development of localized swellings in the temporal and frontal forehead following intake of 200 mg of ibuprofen after routine oral prophylaxis. This is the first case report to document the development of an adverse drug reaction with ibuprofen in a patient following a routine dental procedure. The …


Histone H4 Dosage Modulates Dna Damage Response In The Pathogenic Yeast Candida Glabrata Via Homologous Recombination Pathway, Kundan Kumar, Romila Moirangthem, Rupinder Kaur Mar 2020

Histone H4 Dosage Modulates Dna Damage Response In The Pathogenic Yeast Candida Glabrata Via Homologous Recombination Pathway, Kundan Kumar, Romila Moirangthem, Rupinder Kaur

Open Access archive

Candida glabrata, a nosocomial fungal bloodstream pathogen, causes significant morbidity and mortality in hospitals worldwide. The ability to replicate in macrophages and survive a high level of oxidative stress contributes to its virulence in the mammalian host. However, the role of DNA repair and recombination mechanisms in its pathobiology is still being discovered. Here, we have characterized the response of C. glabrata to the methyl methanesulfonate (MMS)-induced DNA damage. We found that the MMS exposure triggered a significant downregulation of histone H4 transcript and protein levels, and that, the damaged DNA was repaired by the homologous recombination (HR) pathway. Consistently, …


Sumoylation In Human Pathogenic Fungi: Role In Physiology And Virulence, Mahima Sagar Sahu, Sandip Patra, Kundan Kumar, Rupinder Kaur Mar 2020

Sumoylation In Human Pathogenic Fungi: Role In Physiology And Virulence, Mahima Sagar Sahu, Sandip Patra, Kundan Kumar, Rupinder Kaur

Open Access archive

The small ubiquitin-related modifier (SUMO) protein is an important component of the post-translational protein modification systems in eukaryotic cells. It is known to modify hundreds of proteins involved in diverse cellular processes, ranging from nuclear pore dynamics to signal transduction pathways. Owing to its reversible nature, the SUMO-conjugation of proteins (SUMOylation) holds a prominent place among mechanisms that regulate the functions of a wide array of cellular proteins. The dysfunctional SUMOylation system has been associated with many human diseases, including neurodegenerative and autoimmune disorders. Furthermore, the non-pathogenic yeast Saccharomyces cerevisiae has served as an excellent model to advance our understanding …


In Vitro Culture Of Human Corneal Endothelium On Non-Mulberry Silk Fibroin Films For Tissue Regeneration, Charanya Ramachandran, Prerak Gupta, Swatilekha Hazra, Biman B. Mandal Mar 2020

In Vitro Culture Of Human Corneal Endothelium On Non-Mulberry Silk Fibroin Films For Tissue Regeneration, Charanya Ramachandran, Prerak Gupta, Swatilekha Hazra, Biman B. Mandal

Open Access archive

Purpose: The purpose of this study was to determine if non-mulberry varieties of silk are suitable for the culture of corneal endothelium (CE). Methods: Aqueous silk fibroin derived from Philosamia ricini (PR), Antheraea assamen-sis (AA), and Bombyx mori (BM) were cast as approximately 15 μm films with and without pores on which human CE cells were cultured. Tensile strength, elasticity, transmittance in visible range, and degradation properties of the films were characterised. Adhesion of CE to the silk films was quantified using MTT assay in addition to quantifying the number and area of focal adhesions using paxillin. Expression of CE …


Microbial Community Distribution And Core Microbiome In Successive Wound Grades Of Individuals With Diabetic Foot Ulcers, Apoorva Jnana, Vigneshwaran Muthuraman, Vinay Koshy Varghese, Sanjiban Chakrabarty Mar 2020

Microbial Community Distribution And Core Microbiome In Successive Wound Grades Of Individuals With Diabetic Foot Ulcers, Apoorva Jnana, Vigneshwaran Muthuraman, Vinay Koshy Varghese, Sanjiban Chakrabarty

Open Access archive

Diabetic foot ulcer (DFU) is a major complication of diabetes with high morbidity and mortality rates. The pathogenesis of DFUs is governed by a complex milieu of environmental and host factors. The empirical treatment is initially based on wound severity since culturing and profiling the antibiotic sensitivity of woundassociated microbes is time-consuming. Hence, a thorough and rapid analysis of the microbial landscape is a major requirement toward devising evidence-based interventions. Toward this, 122 wound (100 diabetic and 22 nondiabetic) samples were sampled for their bacterial community structure using both culture-based and nextgeneration 16S rRNA-based metagenomics approach. Both the approaches showed …


Anti-Stress, Glial-And Neuro-Differentiation Potential Of Resveratrol: Characterization By Cellular, Biochemical And Imaging Assays, Sajal Afzal, Sukant Garg, Divya Adiga, Yoshiyuki Ishida Mar 2020

Anti-Stress, Glial-And Neuro-Differentiation Potential Of Resveratrol: Characterization By Cellular, Biochemical And Imaging Assays, Sajal Afzal, Sukant Garg, Divya Adiga, Yoshiyuki Ishida

Open Access archive

Environmental stress, exhaustive industrialization and the use of chemicals in our daily lives contribute to increasing incidence of cancer and other pathologies. Although the cancer treatment has revolutionized in last 2–3 decades, shortcomings such as (i) extremely high cost of treatment, (ii) poor availability of drugs, (iii) severe side effects and (iv) emergence of drug resistance have prioritized the need of developing alternate natural, economic and welfare (NEW) therapeutics reagents. Identification and characterization of such anti-stress NEW drugs that not only limit the growth of cancer cells but also reprogram them to perform their specific functions are highly desired. We …


Considerations On Equity In Management Of End-Stage Kidney Disease In Low- And Middle-Income Countries, Wim Van Biesen, Vivekanand Jha, Ali K. Abu-Alfa, Sharon P. Andreoli Mar 2020

Considerations On Equity In Management Of End-Stage Kidney Disease In Low- And Middle-Income Countries, Wim Van Biesen, Vivekanand Jha, Ali K. Abu-Alfa, Sharon P. Andreoli

Open Access archive

Achievement of equity in health requires development of a health system in which everyone has a fair opportunity to attain their full health potential. The current, large country-level variation in the reported incidence and prevalence of treated end-stage kidney disease indicates the existence of system-level inequities. Equitable implementation of kidney replacement therapy (KRT) programs must address issues of availability, affordability, and acceptability. The major structural factors that impact equity in KRT in different countries are the organization of health systems, overall health care spending, funding and delivery models, and nature of KRT prioritization (transplantation, hemodialysis or peritoneal dialysis, and conservative …


The Second Global Kidney Health Summit Outputs: Developing A Strategic Plan To Increase Access To Integrated End-Stage Kidney Disease Care Worldwide, David C.H. Harris, Simon J. Davies, Fredric O. Finkelstein, Vivekanand Jha Mar 2020

The Second Global Kidney Health Summit Outputs: Developing A Strategic Plan To Increase Access To Integrated End-Stage Kidney Disease Care Worldwide, David C.H. Harris, Simon J. Davies, Fredric O. Finkelstein, Vivekanand Jha

Open Access archive

No abstract provided.


Accuracy And Reliability Of Spinal Navigation: An Analysis Of Over 1000 Pedicle Screws, Dinesh Shree Kumar, Nishanth Ampar, Loo Wee Lim Mar 2020

Accuracy And Reliability Of Spinal Navigation: An Analysis Of Over 1000 Pedicle Screws, Dinesh Shree Kumar, Nishanth Ampar, Loo Wee Lim

Open Access archive

Purpose: To estimate the rate of pedicle screw malpositioning associated with placing pedicle screws using intraoperative computed tomography (CT)-guided spinal navigation. Methods: We analysed the records of 219 patients who underwent pedicle screw fixation using O-arm-based navigation. Screw placement accuracy was evaluated on intraoperative CT scans acquired after pedicle screw insertion. Breaches were graded according to the Gertzbein classification (grade 0–III). Results: Of 1152 pedicle screws included, 47 had pedicle violations noted on intraoperative CT. Pedicle screw violation was noted for 17 of 241 screws placed in the cervical spine (overall breach rate, 7.05%; 3.73% and 3.3% with grade I …


Solar Fed Bldc Motor Drive For Mixer Grinder Using A Boost Converter, Deekshitha S. Nayak, R. Shivarudraswamy Mar 2020

Solar Fed Bldc Motor Drive For Mixer Grinder Using A Boost Converter, Deekshitha S. Nayak, R. Shivarudraswamy

Open Access archive

The existing mixer grinder comprises of the universal motor operating in alternating current supply due to high starting torque characteristics and simple controlling of the speed. The absence of brushes and the reduction of noise in the Brushless DC (BLDC) extends its lifetime and makes it ideal in a mixer grinder. A novel solar-powered BLDC motor drive for mixer grinder is presented in this paper. A DC-DC boost converter has been utilised to operate a PV (photovoltaic) array at its highest power. The proposed hysteresis current control BLDC system has been developed in the MATLAB. A performance comparison is made …