Papers by Muhammad Nadhif
FITRIA HERMINTALU, 2023
Fitria. 2023. Studi Deskriprif Teater Mamanda Etnis Banjar di Kuala Tungkal: Skripsi, Jurusan Sen... more Fitria. 2023. Studi Deskriprif Teater Mamanda Etnis Banjar di Kuala Tungkal: Skripsi, Jurusan Seni Bahasa dan Seni, FKIP Universitas Jambi, Pembimbing: (I) Prof. Dr. Mahdi Bahar, S.Kar.,M.Hum., (II) Mohammad Komadri, M.Sn.,
Kata kunci: Teater Mamanda, Etnis, Banjar, Bentuk, Naskah, Busana, Musik, Kuala Tungkal.
Penulis menggunakan metode peneltian kualitatif pendekatan deskriptif dengan objek Teater Mamanda Etnis Banjar di Kuala Tungkal. Subjek penelitian ialah informasi yang merupakan pemain yang menampilkan teater Mamanda pada tahu 1980-1990an. Teori yang dipakai dalam penelitian ini ialah teori bentuk.
Adapun hasil penelitian ini bahwa teater Mamanda merupakan teater rakyat yang berasal dari desa Sei Saren, Kecamatan Bram Itam, Kabupaten Tanjung Jabung Barat, Kuala Tungkal. Teater ini ada dalam Etnis Banjar di Kuala Tungkal. Dahulu teater ini dipertunjukan pada saat hari-hari besar seperti hari kemerdekaan Indonesia, maupun acara pernikahan etnis Banjar di Kuala Tungkal.
PROCEEDINGS OF THE 4TH INTERNATIONAL SEMINAR ON METALLURGY AND MATERIALS (ISMM2020): Accelerating Research and Innovation on Metallurgy and Materials for Inclusive and Sustainable Industry
International Journal of Technology
Lumbar model is an artificial bone that is commonly used in surgical training to simulate working... more Lumbar model is an artificial bone that is commonly used in surgical training to simulate working with the human-like bone for the trainer. The common lumbar model is made of rigid polyurethane (PU) foam and is produced using casting. However, the current lumbar model is expensive and has limitations in representing the real human lumbar, especially in geometry, visuals, and haptics. Therefore, an alternative method of fabricating lumbar models made of rigid polyurethane for surgical training using indirect additive manufacturing will be investigated in this paper. The proposed indirect additive manufacturing is a combination of 3D printing and casting methods. The main process of this method is started by fabricating a mold made of polyvinyl alcohol (PVA) using fused deposition modeling (FDM) 3D printing and subsequently casting PU foam material into the 3D printed PVA mold. Accordingly, the aim of this study is to find the optimized casting process parameters, especially for injecting the material into the mold, to achieve a better quality of lumbar model. The study was conducted using a Design of Experiment (DoE) Taguchi Orthogonal Array to optimize the casting process. The geometrical measurements of middle endplate depth, upper end-plate width, spinal canal width, spinal canal depth, and lower pedicle length show the error ranged from 0.14% to 0.85%. The average porosity, measured from the body, lamina, and spinous, was found to be non-uniform. It is ranged from 19.58% to 21.94% on the middle part and 39.78% to 45.41% on the subsurface of lumbar model. The density was increased by 64.89% compared to the reference open molded PU foam.
Polymers
Various implant treatments, including total disc replacements, have been tried to treat lumbar in... more Various implant treatments, including total disc replacements, have been tried to treat lumbar intervertebral disc (IVD) degeneration, which is claimed to be the main contributor of lower back pain. The treatments, however, come with peripheral issues. This study proposes a novel approach that complies with the anatomical features of IVD, the so-called monolithic total disc replacement (MTDR). As the name suggests, the MTDR is a one-part device that consists of lattice and rigid structures to mimic the nucleus pulposus and annulus fibrosus, respectively. The MTDR can be made of two types of thermoplastic polyurethane (TPU 87A and TPU 95A) and fabricated using a 3D printing approach: fused filament fabrication. The MTDR design involves two configurations—the full lattice (FLC) and anatomy-based (ABC) configurations. The MTDR is evaluated in terms of its physical, mechanical, and cytotoxicity properties. The physical characterization includes the geometrical evaluations, wettability m...
Journal of Mechanical Engineering
One of the wound treatments was negative pressure wound therapy (NPWT), which used wound dressing... more One of the wound treatments was negative pressure wound therapy (NPWT), which used wound dressings on the wound bed to ameliorate wound healing. Unfortunately, most wound dressings were two dimensional (2D), lacking the ability to cover severe wounds with a straightforward procedure. The sheets needed to be stacked following the wound curvature, which might be problematic since improper stacking could hinder the wound healing. Regarding the mentioned problems, our group develops 3D wound dressings, which are made using 3D printers. The wound dressings are made of polycaprolactone (PCL), polyurethane (PU), and polyvinyl alcohol (PVA). As the initial stage, the mechanical integrity of the soft polymers was investigated under uniaxial tensile and uniaxial compressive stress using computational methods. The polymers were defined as 3D lattices following the dimension of existing wound dressings. Based on the simulation results of displacement and von Mises stress, the three polymers are...
THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020
Nowadays, tissue engineering has become a primary option for clinical treatment involving tissue ... more Nowadays, tissue engineering has become a primary option for clinical treatment involving tissue damage or organ failure. One important enabling technological aspect for tissue engineering to produce successful outcomes is bioreactor where cells could be grown under certain conditions mimicking real physiological conditions and be prepared for in vivo integration before implantation to the patients. Physical stimulation by mechanical and electrical means could improve the development of engineered tissue to mimic the actual tissue. Mechanical stimulation could improve cellular function by improving the integrity and organization of the engineered tissue while electrical stimulation can improve the conductivity and contractility of tissue construction. The electric field would stimulate cellular calcium activity which could stimulate cell integration and gap junction formation. Thus, it is necessary to develop a bioreactor that is capable to provide a well-controlled environment and proper combination of mechanical and electrical stimulation to optimize the process of tissue engineering. Here we build a bioreactor that is capable to stimulate the engineered tissue mechanically and electrically to improve the tissue’s contractile performance and functional maturity through an isovolumic contraction. The mechanical stimulation is generated by harmonic inflation and deflation of a balloon while the electrical stimulation is generated from a pair of carbon electrodes. The mechanical and electrical stimulations could function independently to each other. The bioreactor was successfully constructed and passed the functional test and ready for actual application for tissue engineering.
THE 6TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 6th International Symposium of Biomedical Engineering (ISBE) 2021
One of the novel treatments for spinal bone diseases is by delivering the stem cells to the bone ... more One of the novel treatments for spinal bone diseases is by delivering the stem cells to the bone using introducers. The stem cell delivery treatment indeed requires training to prevent malpractices. The training usually involves phantoms, which are expected to comply with the mechanical properties of their biological counterparts. Therefore, residents will feel the tactile feedback similar to the bones. Some high elastic modulus polymers, such as polyetheretherketone (PEEK), polyetherketoneketone (PEKK), and polycarbonate (PC), have been reported to have similar toughness to spinal bones. This study sought to compare the three polymers: PEEK, PEKK, and PC, as materials for spinal models reconstituting C1-L5 vertebral bodies using finite element analysis (FEA). The three polymers were in the form of 3D printed products. The spinal models were obtained from an online database. The FEA was performed using a static structural mechanics module. Uniaxial tensile, compressive, and shear stresses were applied to the vertebral body models, resulting in deformation magnitudes and von Mises stresses (vMS). The resulting vMS were subsequently compared with the ultimate strength of each material, resulting in ratios of vMS vs. ultimate strength, hence MTR, MCR, and MSR. Smaller MTR, MCR, and MSR values indicate better performance of materials. MTR, MCR, and MSR results showed that PEEK has the best performance amongst materials.
THE 6TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 6th International Symposium of Biomedical Engineering (ISBE) 2021
The effect of polyethylene glycol-citric acid (PEG-Ca) addition on mechanical properties of dry b... more The effect of polyethylene glycol-citric acid (PEG-Ca) addition on mechanical properties of dry bacterial cellulose film
THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020
Simulation in Healthcare: The Journal of the Society for Simulation in Healthcare, 2022
INTRODUCTION Pap smear training is commonly conducted using simulators before practicing with hum... more INTRODUCTION Pap smear training is commonly conducted using simulators before practicing with humans. Unfortunately, existing simulators do not well simulate the biomechanical properties of pelvic tissues, and this may negatively impact the training outcome. In this study, we used finite element analysis (FEA) to identify a material that most accurately simulates pelvic tissues in terms of biomechanical properties for fabricating gynecologic training simulators. The selected material was then used to fabricate a vagina and cervix model using a hybrid technique of fused deposition modeling and molding to qualitatively confirm the structural integrity of the simulator. METHODS The vagina and cervix were reconstructed in a 3-dimensional feature according to geometrical parameters reported in the literature. The biomechanical compliance of the simulators was investigated by comparing 5 materials-RTV615, Dragon Skin 10, Dragon Skin 30, Dragon Skin FX-Pro, and Ecoflex 00-30-and a pelvic tissue model (control) using 2 FEA modules. The structural mechanics module simulated the insertion and opening of a vaginal speculum, and the (1) horizontal opening of the vagina and peak von Mises stress at the anterior and (2) posterior walls of the vagina were obtained. The explicit dynamics module estimated (1) the fracture stress during punch biopsies and (2) maximum perpendicular deformation of the cervix before break. The most biomechanically compliant material was subsequently used to fabricate the simulator using the hybrid technique. RESULTS From the FEA, the horizontal opening of the vagina, peak von Mises stress at the anterior wall of the vagina, peak von Mises stress at the posterior wall of the vagina fracture stress, and maximum perpendicular deformation of the cervix before break were obtained; the results of Dragon Skin 10 and the control were most similar. Therefore, the simulator was fabricated using the material. A qualitative evaluation of the simulator by the naked eye verified its structural integrity. CONCLUSIONS Of the materials studied, the FEA results showed that Dragon Skin 10 was the most accurate material for simulating pelvic tissues in terms of the biomechanical properties in a gynecologic training simulator. The simulator was also successfully fabricated using the hybrid technique. Further studies may also involve experimental testing to support the simulation results.
Universiti Teknologi MARA, Apr 1, 2021
International Journal of Technology, 2020
Stem cell studies have progressed significantly in the last decades. Similarly, stem cell therapi... more Stem cell studies have progressed significantly in the last decades. Similarly, stem cell therapies have also been applied in clinical settings, includingthe spine. However, stem cells' delivery to the spinal region requires delicate procedures, demanding reliable introducers in addition to the surgeons' psychomotor skills. The introducer is a tubular sleeve to guide a syringe needle to deliver and draw fluids into and from the body, respectively. To date, there is no introducer dedicated to spinal stem cell deliveries. Our group proposed a dedicated introducer for spinal stem cell therapies, which consists of a needle and a hub (a base part of an introducer for gripping and handling). We focused onthe weighting property method (WPM) to select four polymer candidates for the hub:polystyrene, polycarbonate, polypropylene, and polyethylene. Prior to WPM, the mechanical integrity of the hub candidates was analyzed using the finite element method to determine the von Mises Stress (vMS) values. Accordingly, the vMS for each case and the material was compared with the respective tensile strength (TS), thereby vMS:TS ratio (MTR).MTR was included as one of the properties in WPM, in addition to prices, critical radiation doses, hardness, water absorption, and isopropyl alcohol resistance.According to the WPM calculation, polycarbonate received the highest score, thereby recommended for further introducer fabrications.
International Journal of Technology, 2020
Many articles have reported a correlation between the use of mechanical stimulation and an enhanc... more Many articles have reported a correlation between the use of mechanical stimulation and an enhancement in cultivation of various tissues engineered in bioreactors. The enhancement includes improvements in cell growth, proliferation, and functionalities. The aim of this report is to review the mechanical functionalities of tissue engineering bioreactors in terms of the forms of stimulation, types of stress, actuators, supporting modules, and, most importantly, efficacy. The Google Scholar database was searched for relevant articles. Three forms of simulation were reported: uniaxial, biaxial, and multiaxial. The types of stress exerted by bioreactors include compression, tension, shear, and dynamic stresses, which are applied solely or mutually depending on the number of axes involved. Mechanical stimulation could be actuated by stepper motors, pistons, pneumatic pumps, diaphragm pumps, piezoelectric systems, or dielectric charges. Additional modules, such as incubators, flow perfusion systems, ultrasound sensors, movement controls, and electrodes, can also support the mechanical functions of bioreactors. The efficacy of a bioreactor could be determined by investigating the biomechanical and histological properties of the engineered tissues. To facilitate the development of mechanical functionalities for tissue engineering bioreactors in the future, a seven-step framework is proposed.
THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020, 2021
Chronic Kidney Disease has high mortality and financial burden. It was the third most catastrophi... more Chronic Kidney Disease has high mortality and financial burden. It was the third most catastrophic and expensive disease protected by universal coverage. The growth of medical technology gives hope to solve this hardship potentially. This paper aims to review current and future developments of artificial kidney technologies from different aspects. The scoops are popularity, cost-effectiveness, liters of dialysate needed, portability, safety issues, adverse effect reports, quality of life, the availability, and the number of professional medical workers needed to operate the device. The currently available treatments such as hemodialysis, peritoneal dialysis, and kidney transplantation have its benefits and challenges. Peritoneal dialysis gives a better quality of life and more cost-effective, however, it has the highest dropout ratio. The future artificial kidneys, such as the wearable artificial kidney, automated wearable artificial kidney, and implantable artificial kidney, offer solutions to overcome the existing challenges. Although the new technologies have not yet reached the Indonesian market, the potential benefits are high in helping chronic kidney disease patients – by offering simplicity, accessibility, reachability, and affordability of the treatment.
THE 5TH BIOMEDICAL ENGINEERING’S RECENT PROGRESS IN BIOMATERIALS, DRUGS DEVELOPMENT, AND MEDICAL DEVICES: Proceedings of the 5th International Symposium of Biomedical Engineering (ISBE) 2020, 2021
Chronic and acute wounds interfere with personal aesthetics and appearance. Regarding the problem... more Chronic and acute wounds interfere with personal aesthetics and appearance. Regarding the problematics, researchers enhance the functionalities of wound dressings. One of the enhancement approaches is using 3D printing technology. The use of 3D printing has enabled many types of wound dressings, including biodegradable multi-material, cell-laden, and drug-eluting wound dressings. The use of 3D printing even allows for a wound dressing with a 3D construct, facilitating the wound dressing placement at the wound bed. Unfortunately, the 3D printed wound dressing technology has never been reviewed, to the extent of our knowledge. In this report, we aim to reflect on the recent advances in 3D printed wound dressings. Reports regarding the 3D printed wound dressing were collected from the Google Scholar database. The search was limited from 2015 to 2020 with a logic search: “3D printed” AND “wound dressing,” which words can be found in the entire article. Irrelevant reports were excluded manually, thereby resulting in the 24 selected articles. The selected articles were subsequently reviewed in terms of the materials-efficacy analysis and 3D printing mechanism. The extracted information from all articles concluded that alginate is the most used material for 3D printed wound dressing, while the most used 3D printing mechanism is the pneumatic FDM. In terms of efficacy, wound dressings presented an antimicrobial performance against Gram-positive and Gram-negative bacteria, as well as biocompatibility to epidermis and dermis cells.
AIP Conference Proceedings, 2019
EEG data acquisition system 32 channels based on Raspberry Pi with relative power ratio and brain... more EEG data acquisition system 32 channels based on Raspberry Pi with relative power ratio and brain symmetry index features
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Papers by Muhammad Nadhif
Kata kunci: Teater Mamanda, Etnis, Banjar, Bentuk, Naskah, Busana, Musik, Kuala Tungkal.
Penulis menggunakan metode peneltian kualitatif pendekatan deskriptif dengan objek Teater Mamanda Etnis Banjar di Kuala Tungkal. Subjek penelitian ialah informasi yang merupakan pemain yang menampilkan teater Mamanda pada tahu 1980-1990an. Teori yang dipakai dalam penelitian ini ialah teori bentuk.
Adapun hasil penelitian ini bahwa teater Mamanda merupakan teater rakyat yang berasal dari desa Sei Saren, Kecamatan Bram Itam, Kabupaten Tanjung Jabung Barat, Kuala Tungkal. Teater ini ada dalam Etnis Banjar di Kuala Tungkal. Dahulu teater ini dipertunjukan pada saat hari-hari besar seperti hari kemerdekaan Indonesia, maupun acara pernikahan etnis Banjar di Kuala Tungkal.
Kata kunci: Teater Mamanda, Etnis, Banjar, Bentuk, Naskah, Busana, Musik, Kuala Tungkal.
Penulis menggunakan metode peneltian kualitatif pendekatan deskriptif dengan objek Teater Mamanda Etnis Banjar di Kuala Tungkal. Subjek penelitian ialah informasi yang merupakan pemain yang menampilkan teater Mamanda pada tahu 1980-1990an. Teori yang dipakai dalam penelitian ini ialah teori bentuk.
Adapun hasil penelitian ini bahwa teater Mamanda merupakan teater rakyat yang berasal dari desa Sei Saren, Kecamatan Bram Itam, Kabupaten Tanjung Jabung Barat, Kuala Tungkal. Teater ini ada dalam Etnis Banjar di Kuala Tungkal. Dahulu teater ini dipertunjukan pada saat hari-hari besar seperti hari kemerdekaan Indonesia, maupun acara pernikahan etnis Banjar di Kuala Tungkal.