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All Journal Jurnal Biologi Tropis Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya
Dyah Purnaning
Universitas Mataram
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Mathematics Physics Public Health Other

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Sintesis dan Karakterisasi Injectable Bone Substitute Berbasis Cangkang Pinctada Maxima dengan Modifikasi Konsentrasi Polyvinyl Alcohol Susi Rahayu; Awanda Oktri P.M; M. Mukaddam Alaydrus; Ahmad Taufik S; Maz Isya A.A; Dyah Purnaning; Teguh Ardianto
Lambda: Jurnal Ilmiah Pendidikan MIPA dan Aplikasinya Vol. 5 No. 2 (2025): Lambda
Publisher : Lembaga Bale Literasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/lambda.v5i2.1615

Abstract

Bone damage caused by trauma or accidents, along with the limitations of conventional treatment methods, has driven the development of more efficient bone repair strategies. Injectable Bone Substitutes (IBS) offer a minimally invasive alternative with promising clinical potential. This study aims to investigate the physical and chemical characteristics of IBS synthesized from Pinctada maxima shell-derived bioceramics, with modified concentrations of polyvinyl alcohol (PVA) as a binder component. IBS formulations were prepared by varying PVA concentrations from 0% to 12%. The resulting materials were characterized by measuring viscosity, density, injectability, and pH to evaluate their suitability as injectable bone substitutes.The addition of PVA significantly influenced the properties of the IBS. Viscosity values ranged from 0.03 to 99.77 dPa·s, with all formulations exhibiting injectability above 90%. The density values varied between 0.219 and 1.01 g/cm³, while pH values were close to neutral (around 6). The 10% PVA formulation exhibited the most favorable characteristics, with a viscosity of 25.80 dPa·s and injectability of 98.82%, suggesting optimal performance for physiological application. The modification of PVA concentration effectively tailors the physical properties of IBS materials. Further research is recommended to include setting time analysis and more in-depth pH and injectability studies to validate the material’s potential as a biocompatible injectable bone substitute.
The Relationship Between the Level of Knowledge of the Elderly About Risk Factors of Low Back Pain and the Incidence of Low Back Pain at Pusat Pelayanan Sosial Lanjut Usia Mandalika, Nusa Tenggara Barat, in 2025 Ni Kadek Lioni; Anak Agung Ayu Niti Wedayani; Dyah Purnaning; Azizatul Adni
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11197

Abstract

Low Back Pain (LBP) is a musculoskeletal problem that is often experienced by the elderly and can reduce the quality of life. Knowledge of LBP risk factors plays an important role in efforts to prevent and treat it. This study aims to determine the relationship between the level of elderly knowledge about LBP risk factors and the incidence of LBP at the Mandalika Elderly Social Service Center, West Nusa Tenggara in 2025. This quantitative study used a cross-sectional design on 41 elderly people selected through total sampling. Data was collected using a questionnaire that had been tested for validity and reliability, then analyzed univariately and bivariously with Chi-square test. The results showed that most of the respondents had sufficient knowledge (46.3%), followed by low (34.1%) and good (19.5%) knowledge. The incidence of LBP was found in 26 respondents (63.4%), while 15 respondents (36.6%) did not experience LBP. The Chi-square test showed a significant relationship between the level of knowledge of the elderly and the incidence of LBP (p-value = 0.002). It was concluded that low knowledge was related to the high incidence of LBP. Continuous health education is needed to increase the understanding of the elderly in preventing LBP.
The Correlation between Iron and Protein Intake in the Hemoglobin Levels of the Faculty of Medicine Students, Unram Rifana Cholidah; Emmy Amalia; Ario Danianto; Dyah Purnaning; Asti Ananda
Jurnal Biologi Tropis Vol. 26 No. 1 (2026): Januari-Maret
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i1.11382

Abstract

naemia is a global burden disease that mostly occurs in the reproductive age. About 31.2% of women of reproductive age (15-49 years) have anaemia. This condition may affect oxygen transport in the body and interfere with some bodily functions. Several factors may induce anaemia; iron deficiency is one of them. An amount of iron and protein intake may contribute to haemoglobin levels. This study aims to determine the correlation between iron and protein intake and haemoglobin levels among students in the Faculty of Medicine at the University of Mataram. This is an observational analytic study using cross-sectional methods that includes students aged 17-20 years old. Data is taken in May–June 2024 using a spectrophotometer for checking haemoglobin levels. Iron and protein intake were traced by a 24-hour food records questionnaire over 2 days. Results: There are 118 samples with 25.42% male and 74.58% female. Normal mean haemoglobin levels were detected in this study (12.59±0.82). The correlation tests, with the t-test for iron and protein intake, are not significant, with p-values of 0.246 and 0.254, respectively. Also, total protein and iron intake from this study, with an Anova F-test, is not significant, with a p-value of 0.408. The amount of consumption of iron and protein intake is not significant in the hemoglobin levels of Faculty of Medicine Students of the University.
Co-Authors Ahmad Taufik S Anak Agung Ayu Niti Wedayani Ario Danianto Asti Ananda Awanda Oktri P.M Azizatul Adni Emmy Amalia M. Mukaddam Alaydrus Maz Isya A.A Ni Kadek Lioni Rifana Cholidah Susi Rahayu Teguh Ardianto, Teguh