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All Journal Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi Jurnal Polimesin
Razali Razali
Syiah Kuala University
Agriculture, Biological Sciences & Forestry Automotive Engineering Control & Systems Engineering Education Engineering Materials Science & Nanotechnology Mechanical Engineering

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Nilai Trigliserida Serum Darah Kambing Kacang Jantan Setelah Pemberian Infusa Daun Katuk (Sauropus androgynus (L.) Merr) Razali Razali; Sumarti Suryaningsih; Sapriani Sapriani
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 5, No 1 (2013): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (55.749 KB)

Abstract

Penimbunan lemak dalam darah berkorelasi dengan kadar trigliserida darah dalam tubuh. Sehingga banyak orang menghindari konsumsi daging kambing disebabkan pangan tersebut dapat memicu peningkatan nilai kolesterol. Penelitian ini bertujuan menilai efektivitas infusa daun katuk (Sauropus androgynus (L.) Merr) terhadap nilai trigliserida serum darah kambing kacang jantan. Hewan yang digunakan adalah 9 ekor kambing kacang jantan lokal berumur 1,5 tahun dengan berat badan rata-rata 18,77±2,43 kg. Rancangan yang digunakan adalah Rancangan Acak Lengkap (RAL) pola searah dengan tiga kelompok perlakuan. Masing-masing  perlakuan terdiri dari tiga ekor kambing yaitu kelompok I, KII, dan KIII masing-masing sebagai kontrol, diberi infusa daun katuk dosis 25 ml dan 50 ml. Hasil  analisis varian (ANAVA) menunjukkan bahwa pemberian infusa daun katuk berpengaruh sangat nyata (P0.01) menurunkan kadar trigliserida serum darah kambing kacang jantan. Rataan dan standar deviasi kadar trigiserida serum darah (ml/dl) pada KI, KII, dan KIII berturut-turut adalah 247.67±22.19; 134.67±34,64; dan 46.67±3,51. Hasil uji Duncan menunjukkan bahwa kadar trigliserida serum darah kambing kelompok dosis 50 ml dan 25 ml berbeda sangat nyata (P0,01) dengan kontrol.  Dapat dikatakan bahwa pemberian infusa daun katuk dapat menurunkan nilai serum trigliserida darah kambing jantan. 
Thermal performance of desiccant-integrated and conventional Maisotsenko cooling systems in a high humidity tropical climate Haiqal Irfansyah; Sarwo Edhy Sofyan; Razali Razali
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.7392

Abstract

Tropical regions are characterized by a distinctive climate, marked by consistently high temperatures and significant humidity throughout the year. These conditions necessitate the use of cooling systems to ensure thermal comfort. Previous studies have shown that the Maisotsenko cooling system experiences a decline in efficiency when operating in high-humidity environments. Conversely, desiccant systems are effective in reducing air humidity. This study aims to design and experimentally evaluate the performance of a Maisotsenko cooling system under high-humidity tropical conditions, as well as the effect of integrating a desiccant system on its cooling efficiency. The experiments were conducted using a laboratory-scale fabricated test rig, consisting of a Maisotsenko cooling unit with a channel length of 180 mm and a desiccant unit with a channel length of 140 mm. Tests were performed using a standalone Maisotsenko system and a combined Maisotsenko-desiccant system. Air velocity was varied at 3 m/s, 4 m/s, and 5 m/s, with an air ratio of 0.5. The results showed that for the Maisotsenko system without a desiccant, the best cooling performance under high humidity conditions occurred at an air velocity of 3 m/s, achieving a temperature reduction of 1.7°C, a heat transfer rate of 1.4 W, a dew point temperature effectiveness of 27.5%, and a wet-bulb temperature effectiveness of 37.3%. In contrast, the combined system with a desiccant at 3 m/s provided enhanced temperature reduction, dew point effectiveness, and wet-bulb effectiveness of 2°C, 32.4%, and 43.8%, respectively. The highest heat transfer rate, however, was recorded at 5 m/s with a value of 1.9 W. The integration of a desiccant system significantly improved the cooling performance of the Maisotsenko system in terms of temperature reduction, heat transfer rate, and cooling efficiency. At air velocities of 3 m/s, 4 m/s, and 5 m/s, the cooling performance increased by 17.6%, 78.9%, and 366.7%, respectively.
Co-Authors Haiqal Irfansyah Sapriani Sapriani Sarwo Edhy Sofyan Sumarti Suryaningsih