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All Journal Paediatrica Indonesiana JURNAL TEKNIK SIPIL UNAYA
Adrian, Riki
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Civil Engineering, Building, Construction & Architecture Health Professions Materials Science & Nanotechnology Medicine & Pharmacology

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Pengaruh Penambahan Serat Baja Terhadap Kuat Tekan Beton Adrian, Riki; Rahmawati, Cut; Silviana, Mery
Jurnal Teknik Sipil Unaya Vol 11, No 2 (2025): Juli 2025
Publisher : Center for Research and Community Service (LPPM) University of Abulyatama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30601/jtsu.v11i2.6543

Abstract

Concrete is a construction material that is often used in various applications such as buildings, bridges and other infrastructure. Concrete compressive strength is one of the most important parameters for determining the structural strength of a building. And concrete compressive strength is a major concern in the construction industry. One of the common problems with concrete is the risk of cracking. Especially under dynamic loads or extreme temperature changes. Therefore, as time goes by, many innovations have been made in the development of concrete, one of which is by adding fiber to the concrete mixture. This research aims to find out what is the optimal percentage for adding hooked steel fibers to the concrete mixture.  The research method includes making and testing concrete samples with different steel fiber content variations, namely 0.5%, 1%, 1.5% and 1.8% using FAS 0.4. Compressive strength testing is carried out after the concrete reaches the age of 28 days. The research results show that the most optimal addition of steel fiber in concrete is a percentage of 0.5% with an average compressive strength of 348.20 Kg/cm². This increase is caused by the ability of steel fibers to resist crack propagation and micro tensile stress. However, if the fiber content is too high, there is a decrease in workability which causes the compressive strength of the concrete to decrease.
Risk factors for progression of chronic kidney disease in children with nephrotic syndrome Adrian, Riki; Sovira, Nora; Haris, Syafruddin; Andid, Rusdi; Darnifayanti, Darnifayanti; Yusuf, Sulaiman
Paediatrica Indonesiana Vol. 65 No. 4 (2025): July 2025
Publisher : Indonesian Pediatric Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14238/pi65.4.2025.291-6

Abstract

Background Nephrotic Syndrome (NS) is a progressive kidney disease in children that can lead to chronic kidney disease (CKD). Understanding the interactions between various risk factors is critical in developing new strategies to prevent the progression of CKD in pediatric patients with NS. Objective To determine the risk factors for the progression of CKD in children with nephrotic syndrome at Dr. Zainoel Abidin Public Hospital, Banda Aceh. Methods This analytical observational study with a cross-sectional approach was conducted from September 2021 to September 2023. Data were obtained from medical records of 52 children aged 2 to 18 years in the inpatient and outpatient wards of Dr. Zainoel Abidin Public Hospital, Banda Aceh who met the inclusion criteria. Bivariate analysis using the Chi-square and Fisher's tests and multivariate analysis using logistic regression test were performed. Results Of 52 subjects, most were male and over ten years of age; 53.8% of subjects had Stage 1 CKD. The majority of stage 3-5 of CKD cases had immunosuppressive toxicity and anemia, while the majority of all subjects had hyperfiltration and proteinuria. Risk factors for CKD progression in children with NS are Hypertension (OR 2.54; 95%CI 0.32 to 20.1; P=0.003), immunosuppressant toxicity with (OR 33.67; 95%CI 2.59 to 437.5; P=0.007) and anemia (OR 33.92; 95%CI 2.77 to 414.5; P=0.006). Conclusion Hypertension, immunosuppressant toxicity and anemia for CKD progression in children with NS.
Co-Authors Darnifayanti, Darnifayanti Nora Sovira, Nora Rahmawati, Cut Rusdi Andid, Rusdi Silviana, Mery Sulaiman Yusuf Syafruddin Haris, Syafruddin