Publications by authors named "Fathurrahman"

There is a need to help advance research on using machine learning and data mining techniques in physics education research (PER), which might still be difficult due to the unavailable dataset for the specific purpose of PER. The SPHERE (Students' Performance Dataset in Physics Education Research) is presented as an educational dataset of physics learning collected through research-based assessments (RBAs) established by the PER scholars. In this study, students' performance in physics at four public high schools was probed in three learning domains.

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This research aimed to evaluate the impact of various herbal additions on the quality and sensory attributes of moringa (Moringa oleifera Lam)-based instant beverages. The study was conducted in several laboratories at Tadulako University and the Goods Quality Testing and Certification Unit in Palu. Physicochemical properties (water content, vitamin C, antioxidants, solution pH, and dissolution time) were evaluated using a completely randomized design.

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This study presents a comprehensive investigation of the oxygen evolution reaction (OER) activity on nickel phosphate (NiPO) surfaces doped with transition metals (Mn, Fe, Co, and Cu). By combining density functional theory calculations, the computational hydrogen electrode approximation, and microkinetic simulations, we demonstrate that transition metal doping significantly enhances OER performance compared to the pristine NiPO surface. The observed trends in overpotential values align with the oxygen adsorption energies on the doped surfaces, indicating a consistent improvement in catalytic activity.

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The history of hand surgery in Indonesia began with the growing interest in performing a complicated hand surgery. Since the 1970s, hand surgery in Indonesia has made headway, especially when it comes to science and education. The development of hand surgery in Indonesia is not limited to a microsurgery area, but also covers more modern techniques, including reconstruction, minimal invasive surgery, arthroscopy, and various kinds of innovations and developments to overcome the high cost of health, especially medical devices in Indonesia.

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Sorting Municipal Solid Waste (MSW) has helped promote the awareness of sustainable development of environment. A robot equipped with an intelligent deep learning (DL) detection algorithm have been proposed to improve the sorting task. But most of the related studies aimed to better the DL algorithms on MSW detection, and few studies integrated the DL algorithms with a robot to identify the dominated factors to Intelligent MSW Sorter (IMSWS).

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Pyrolyzed Fe-N-C-based catalysts, particularly FeN, are reported to show enhanced catalytic activity for some chemical reactions, particularly for the oxygen reduction reaction (ORR). Here, we present a computational study to investigate another pyrolyzed Fe-N-C-based catalyst, FeN, adsorbed on graphene with special emphasis on the edges of graphene nanoribbons (both zig-zag and armchair configurations) as a candidate for Fe dual-atom catalysts (Fe-DACs). Utilizing density functional theory calculations along with microkinetic simulations, we investigate the influence of graphitic edges on the stability and ORR activity of Fe-DAC active sites.

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Introduction And Importance: Thumb carpometacarpal (CMC) joint arthritis is the most common condition in older adults and an upper-extremity surgical reconstruction site. Multiple treatments for CMC arthritis have been developed. Among them, suspension sling arthroplasty provides great results without requiring a tendon graft or advanced implants.

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Since the 1990s, new insights in wrist arthroscopy have led to the introduction of numerous treatment methods. Consequently, therapeutic procedures are no longer limited to resection as more specialized repair and functional reconstruction methods, involving tissue replacement and essential structural augmentation, have been shown to be beneficial. This article discusses the most prevalent reasons and uses for wrist arthroscopy, with an emphasis on Indonesia's most recent and major advances in reconstructive arthroscopic surgery.

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Background: Tuberculosis (TB) of the spine is a highly disruptive disease, especially in underdeveloped and developing countries. This condition requires standard TB treatment for 9-18 months, which increases patient risk of drug-resistant TB. Consequently, this raises the concern of adopting additional therapies to shorten the treatment duration, improve the efficacy of anti-TB drugs, and further decrease damage in the affected tissues and organs.

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Understanding the factors that influence the activity of a catalyst toward CH activation is of high importance for tuning the catalyst performance or designing new, better catalysts. Here, we performed a set of density functional theory (DFT) calculations on the H-CH bond cleavage over the Cu-O-Cu active site in the MOR zeolite with various Al-pair arrangements to obtain molecular insight into the structure-activity relation and clarify key parameters that define the Cu-O-Cu reactivity toward CH. We found that weakening of the Cu-O-Cu bond during CH activation is crucial for determining the O-H bond strength and thus the Cu-O-Cu reactivity.

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Rice, the main staple food for about half of the world's population, has had the growth of its production stagnate in the last two decades. One of the ways to further improve rice production is to enhance the associations between rice plants and the microbiome that exists around, on, and inside the plant. This article reviews recent developments in understanding how microorganisms exert positive influences on plant growth, production, and health, focusing particularly on rice.

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Background: Vertebral bone defect represents one of the most commonly found skeletal problems in the spine. Progressive increase of vertebral involvement of skeletal tuberculosis (TB) is reported as the main cause, especially in developed countries. Conventional spinal fusion using bone graft has been associated with donor-site morbidity and complications.

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One of the main limitations of productivity in photobioreactor is the inefficient conversion of the available light into biomass. Photoautotrophic cells such as microalgae only absorb a small fraction of supplied illumination due to limitation of its photosystem's (PS) absorbing rate. However, phenomenon of Flashing Light Effect (FLE) allows microalgae to utilize strong light exceptionally through intermittent exposure.

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