Article Per Year (5 Year)
p-Index From 2021 - 2026
3.753
P-Index
This Author published in this journals
All Journal HAYATI Journal of Biosciences Natural Science: Journal of Science and Technology Biospecies Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences METAMORFOSA Journal of Biological Sciences Jurnal Pendidikan Matematika dan IPA AL KAUNIYAH Biogenesis: Jurnal Ilmiah Biologi Jurnal Biologi Universitas Andalas Indonesian Journal of Biotechnology TREUBIA JMPM (Jurnal Material dan Proses Manufaktur) Jurnal Biologi Tropis JURNAL KESEHATAN PERINTIS Majalah Kedokteran Andalas Menara Ilmu International Journal of Agricultural Sciences Sainstek : Jurnal Sains dan Teknologi Best Journal (Biology Education, Sains and Technology) Jurnal Ners Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Makara Journal of Science
Djong Hon Tjong
Universitas Andalas
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

Published : 53 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 53 Documents
Search

 1   2   3   4   5 
Variasi Morfologi Arachnothera longirostra (Passeriformes, Nectariniidae) (Latham, 1790) Aldino Fauzil Fanani; Wilson Novarino; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 1, No 1 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.1.%p.2012

Abstract

Research about morphological variation of Arachnothera longirostra (Passeriformes, Nectariniidae) on Harapan Rainforest (Jambi), The Biological Education and Research Forest (BERF) and Marapi Mount have been conducted from September 2011 to February 2012. The samples have been collected directly on the field and data were analyzed on Animal Taxonomy Laboratory, Biology Departement, Faculty of Mathematics and Natural Sciences, Andalas University, Padang. Based on the (analysis) result using Kruskall-Wallis Test, the females were found five of nine variation morphological characters and the males were found seven characters. Based on Mann-Whitney U test was found one character that appeared consistenly different to females such as WDTB (Wide Bill), while for males were found two characters such as WDTB (Wide Bill) and LGTR (Long Tarsus). Phenogram obtained by UPGMA analysis showed close relationship between populatiaon of A. longirostra from both of Marapi and HPPB populations.Keywords: morphology, variation, nectariniidae, Arachnothera longirostra
Jenis-Jenis Kadal (Sub-Ordo Sauria) di Hutan Harapan Jambi Kevin Origia; Wilson Novarino; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 1, No 1 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.1.%p.2012

Abstract

Research of lizards (Sauria) in the Harapan Rainforest, Jambi was conducted from February to April 2012. The research was conducted using the direct capture and survey method. The result found of 14 species of lizards belongs to five families, which are Draco sumatrana, Aphaniotis fusca, and Bronchocela cristatella (Agamidae), Varanus salvator and Varanus sp. (Varanidae), Eutropis multifasciata and Eutropis macularia (Scincidae), Takydromus sexlineatus (Lacertidae), Cyrtodactylus sp., Hemidactylus platyurus, Hemidactylus frenatus, Hemidactylus sp., Gekko smithii and Gekko monarchus (Gekkonidae).Keywords: inventarisation, lizard, species, Harapan Rainforest, Jambi
Isolasi dan Karakterisasi Bakteri Alkali-Proteolitik Sumber Air Panas Semurup Kerinci Jambi Yurike Nova Edlin; Anthoni Agustien; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 3, No 4 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.4.%p.2014

Abstract

Thermophile protease has economic value because this enzyme is useful on all kind of industry that used high temperature on it production process. In the effort of obtaining indigenous alkaline thermostable a protease bacterial that produce we explore potential hot spring at Semurup, Kerinci Jambi. This study was conducted from September 2013 to February 2014, Water samples were collected by purposive sampling, the character of thermophilic bacteria were described for each in laboratory of microbiology and biomolecular, development of biology, faculty of mathematic and natural science Andalas university, Padang. There were 40 thermophile colonies, 7 isolates showed alkali proteolytic  index range from 0.3 to 2.00. SIII-10 isolate showed the highest in alkali proteolitic index. The characteristic of SIII-10 are: whute and bolt colony, gram negative, motil, positive sitrat agar and positive gelatin.Key words, Isolation, characterization, alkaline protease, thermostable, Hot spring.
Variasi Morfometrik Kodok Duttaphrynus melanostictus (Schneider, 1799) (Anura: Bufonidae) di Sumatera Barat yang Dipisahkan oleh Bukit Barisan Ravelino Nesty; Djong Hon Tjong; Henny Herwina
Jurnal Biologi Universitas Andalas Vol 2, No 1 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.1.%p.2013

Abstract

The research on morphometric variations of toads Duttaphrynus melanostictus (Schneider, 1799) (Anura: Bufonidae) in West Sumatera those separated geographically by Barisan Mountain was conducted from July to September 2012 with 4 sampling areas (Surantih, Padang, Suliki and Sijunjung). Survey and direct collection methods were used in this study. Morphometric characters measurement was conducted at Animal Taxonomy Laboratory of Biology Department, Faculty of Sciences, Andalas University. The purpose of this study was to determine the morphometric variation in population of D. melanostictus. The results showed that morphometric differentiation between western and eastern population of D. melanostictus in both within males and females. This finding might support that Barisan Mountain has isolated the populations.Keywords: morphometrics, variation, Duttaphrynus melanostictus, West Sumatra
Komunitas Anura (Amphibia) pada Tiga Tipe Habitat Perairan di Kawasan Hutan Harapan Jambi Kharisma Putra; - Rizaldi; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 1, No 2 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.2.%p.2012

Abstract

A study on Anuran’s community (Amphibia) living in three types of wetland habitats ( i.e: rivers, lakes, and swamp forest) at Harapan Rainforest Jambi was conducted from October 2011 to January 2012 by using Encounter Visual Survey along six belt transects. This study found 115 individuals of Anura’s, which belong to 14 species, eight genera, and three families. Density of each species was different between the three wetland habitats. The highest density in the rivers was Limnonectes paramacrodon (6.66 ind/ha), in the lakes was Occydozyga sumatrana (16.87 ind/ha), and in the swamp forest was Limnonectes paramacrodon (5 ind/ha). Diversity index of Shannon Wiener indicated that species diversity was different between lakes, rivers, and swamp forest (rivers: 1.227, lakes: 1.594, and swamp forest: 1.154). The highest similarity index was found between rivers and lakes (42.86%), and the lowest between swamp forest and lakes (16.67%). Distribution patterns of most Anuran’s species based on Quadrat Variance Analysis were clumped.Keywords: anura, community structure, distribution pattern, wetland habitat
Variasi Kefalometri pada Beberapa Suku di Sumatera Barat Rizia Irsa; - Syaifullah; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 2, No 2 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.2.%p.2013

Abstract

A study about cephalometry variations of three ethnic groups living in West Sumatra was conducted from May until August 2012. This study used survey method and purposive sampling technique. The measurements of cephalometry were taken from total of 150 individu samples with frontal photos from head-face. The result showed significant variations on head length, head width, upper facial height, bizygomatic breadth, eyes width, distance of endocathion, nose length, nose width, chin height, minimum frontal height and distance of stomion to menton. Based on statistic analysis, Nias, Minang and Mentawai ethnics showed different cephalic, facial, frontoparietal and nasalis type. Phenogram by UPGMA of three ethnic groups showed close relationship between Nias and Mentawai.Keywords : variation, cephalometry, ethnics, West Sumatra.
Karakterisasi Bakteri Amilo-Termofilik Obligat dari Sumber Air Panas Semurup, Sungai Penuh - Jumawita; Anthoni Agustien; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 3, No 3 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.3.%p.2014

Abstract

The study about “characterization of amilo-thermophilic obligat bacteria from Semurup Hot Spring” has been conducted from November 2013 to March 2014 in Laboratory of Microbiology, Biology Department, Faculty of Mathematic and Natural Science, Andalas University, Padang. The purpose of this study was to find out and analyze isolate amilo-thermophilic obligat bacteria. The result of this study showed that isolate SII-7 from Semurup Hot Spring survived at 70 ºC, that produced amylase with unique macroscopic characters: random, cream and smooth surface. The isolate SII-7 was bacille, Gram positive, has endospore as a product, motility and catalase positive.Keyword: Characterization, thermophilic obligat, bacteria, amylase.
Analisis Sudut ATD pada Narapidana Nurul Aida; Dewi Imelda Roesma; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 4, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.4.1.%p.2015

Abstract

Research on dermatoglifi and ratio 2D: 4D has been done in April to June 2013 by Stratified Random method for inmates and Random Simple (Simple Random Sampling) for non-inmates. Data processing is carried out in the Laboratory of Cytology and Genetics, Department of Biology, Faculty of Mathematics and Natural Sciences Andalas University in Padang, West Sumatra.Keywords: dermatoglifi, fingerprint patterns, inmates
Pengaruh Pemberian Rhodamin B Terhadap Struktur Histologis Ginjal Mencit Putih (Mus musculus L.) Riska Mayori; Netty Marusin; Djong Hon Tjong
Jurnal Biologi Universitas Andalas Vol 2, No 1 (2013)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.2.1.%p.2013

Abstract

Rhodamine B is synthetic textile dye that currently still used for food coloring. Thus, it is important to analyse the effect of the substance on health. It was aimed to identify the histological structure changes of the mice kidney caused by Rhodamin B. This research was used experimental method with Completely Randomized Design in factorial pattern consisting of two factors such as dose of (0; 3.5; 7.0 and 14 mg/g body weight) and duration of treatment (0; 7; 14 and 21 days). The result showed that of dose and duration of treatment Rhodamin B have significant effect on the percentages of glomerular damage, and so did the interactions of both factors. Histological analysis showed the presence of narrowing of bowman space in glomerular, hipertrophy, necrosis and serosis of the tubules. The higher dose and the longer duration of treatment of Rhodamin B, the more serious of structural damages of kidney.Keywords : Rhodamin B, kidney, Mus musculus
Antimicrobial Activity of Skin Secretion of Rana hosii Frog (Anura: Ranidae) against several pathogenic microbes Feskaharny Alamsjah; Djong Hon Tjong; Zil Fadhillah Rahma
Jurnal Biologi Universitas Andalas Vol 8, No 2 (2020)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.8.2.48-53.2020

Abstract

The research on antimicrobial activity of skin secretion derived from Rana hosii (Anura: Ranidae) against several pathogenic microbes had been conducted at Microbiology Laboratory and at Genetics and Biomolecular Laboratory, both in the Biology Department, Universitas Andalas. The research used to survey and experimental methods. The study aimed to determine the effectivity of Rana hosii skin secretion to inhibit microbial activity, hence it tested onto some pathogenic microbes such as Escherichia coli, Staphylococcus aureus and Candida albicans. The results showed that the biggest inhibition zone formed against E. coli was 10.96 + 0.63 mm, on S. aureus was 11.74 + 1.00 mm, while on C. albicans was 7.42 + 0.80 mm. The results indicated that the skin secretions from Rana hosii frog could be a potential broad-spectrum antibacterial, and antifungal activity against C. albicans.
Co-Authors - Jumawita - Syaifullah Aadrean Aidil, Dyta Rabbani Aldino Fauzil Fanani Almurdi Almurdi Amir Hamidy AMIR HAMIDY Anggraini, Debie Annisya Fitri Anthoni Agustien Anugrah Viona Agesi Arum Setiawan Asnul Fitria Aurora, Dhea Apriano Dahelmi Dahelmi Dahelmi David Gusman Dewi Imelda Roesma Dharmayanthi, Anik Budhi Dian Juliadmi Djoko T. Iskandar Djoko T. Iskandar, Djoko T. Dwitya Elvira Dyta Rabbani Aidil Elli Firdamila fachrul reza, fachrul Fanny Adhy Putri Fauzan . Feskaharny Alamsjah Firdamila, Elli Fuji Astuti Febria G Gunawarman, G Gusman, David Hadi Addaha, Hadi Hadi Kurniawan Henny Herwina Hirowati Ali Hirowati Ali, Hirowati Huda, Nadyatul Khaira Ida Ayu Putu Sri Widnyani Ilhamdi, Ilhamdi Indra Junaidi Zakaria Irawati Chaniago Irvan Fadli Wanda Jamsari Jamsari Janra, Muhammad Nazri Jon Affi, Jon Juliadmi, Dian Kevin Origia Kevin Origia Kharisma Putra Liza Aulia Yusfi Mahmudul Hasan Mahmudul Hasan, Mahmudul Marlina Marlina Masayuki Sumida Masayuki Sumida, Masayuki Maulana, Imron Melinda, Annisa Menkher Manjas Meri Wulandari Muhamad Irsyad Muhammad Idris Muhammad Silmi Nelmi Fitria Netty Marusin Netty Marusin Nia Kurniawan Nia Kurniawan Nofrita Nofrita Nofrita Nofrita Nurhafitri, Amanda Nurul Aida Nurvalinda Nurvalinda Nuswantoro, Nuzul Ficky Nuzulia Irawati Oktaviana, Dili Padilla, Putri Rahma Prawira, Furqan Dwiki Lintang Putri, Emilya Rahmadina, Shovinda Ravelino Nesty Resti Rahayu Ridho Hendrikos Rifka Rahmat Riska Mayori Rita Permatasari Rivi Hamdani Rizaldi Rizaldi Rizia Irsa Salis, Viola Mutiara Saputri, Rahmi Agu Silvia Indra Sisca Dwi Yarni Sri Wahyuni Handayani Sri Wahyuni Handayani, Sri Wahyuni Syaifullah Syaifullah Syaifullah Syaifullah Syaifullah Syandri, Hafrijal Takeshi Igawa Takeshi Igawa, Takeshi Tesri Maideliza Tofrizal Wilson Novarino Yarni, Sisca Dwi Yelvita Sari Yeni Gusma Yanti Yuliarni Syafrita Yurike Nova Edlin Zil Fadhillah Rahma Zozy Aneloi Noli Zulkarnain, Alivia