‪Ahmad Muhtadi

ORCID: 0000-0001-9060-1894
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About
Contact & Profiles
Research Areas
  • Aquatic life and conservation
  • Medicinal Plant Research
  • Marine and Coastal Ecosystems
  • Fish Biology and Ecology Studies
  • Natural Antidiabetic Agents Studies
  • Agricultural and Environmental Management
  • Agriculture and Agroindustry Studies
  • Water Quality Monitoring Technologies
  • Agricultural and Biological Research
  • Food and Agricultural Sciences
  • Microplastics and Plastic Pollution
  • Coastal Management and Development
  • Education and Character Development
  • Medicinal Plants and Neuroprotection
  • Natural Products and Applications
  • Recycling and Waste Management Techniques
  • Morinda citrifolia extract uses
  • Management and Optimization Techniques
  • Community-based Tourism Development and Sustainability
  • Computational Drug Discovery Methods
  • Educational Curriculum and Learning Methods
  • Heavy Metal Pollution Remediation
  • Marine and fisheries research
  • Identification and Quantification in Food
  • Aquatic Ecosystems and Biodiversity

University of North Sumatra
2015-2024

National Research and Innovation Agency
2023-2024

Universitas Muhammadiyah Pontianak
2024

Padjadjaran University
2014-2022

Universitas Nurtanio
2022

Universitas Mahasaraswati Denpasar
2021

IPB University
2017-2020

Bandung Institute of Technology
2014

Abstract The rivers at the foot of Mount Sinabung are part Wampu River Watershed. Watershed is one principal and most important ecosystems in regencies Langkat Karo, North Sumatra Province. objective this study to determine biodiversity macroinvertebrates health status river using biotic index method. This research was conducted from July August 2023 tributaries surrounding Sinabung. identification results revealed 17 species 14 families. frequently found macroinvertebrate Melanoides...

10.1088/1755-1315/1445/1/012078 article EN IOP Conference Series Earth and Environmental Science 2025-01-01

Abstract Sialang Buah Beach is located in Teluk Mengkudu Subdistrict, Serdang Bedagai Regency, North Sumatra Province. The purpose of this research to determine the biodiversity macrozoobenthos and relationship between diversity environmental parameter conditions. This study was conducted March 2024 with three station points on Beach. identification results found 21 species from 18 families. index value (H’) at each falls into medium category. Principal Component Analysis correlation shows...

10.1088/1755-1315/1445/1/012079 article EN IOP Conference Series Earth and Environmental Science 2025-01-01

Human pancreatic α-amylase inhibition is currently a promising therapeutic target against type 2 diabetes (DMT2) because it can reduce aggressive digestion of carbohydrates into absorbable monosaccharides. In Indonesia, medicinal plants, e.g. Morinda citrifolia fruit, have been empirically utilized as blood-sugar reducer, however, the inhibitory activity compounds in this plant human still limited or none. Therefore, study aimed to test interaction 7 (americanin, asperulosidic acid,...

10.1080/07391102.2021.1894981 article EN Journal of Biomolecular Structure and Dynamics 2021-03-08

Lake Kelapa Gading is an artificial lake located in Asahan district of North Sumatra province. Thepurpose this study was to determine: 1) description conditions temperature, dissolved oxygenand pH vertically the water for 24 hours, 2) production and consumption oxygen waters ofLake Gading. The conducted March-April 2016 with preliminary mainresearch activities. There are three observation stations 1 (near KJA), station 2 (the areanear settlement) 3 (outlet). measured temperature ranges from...

10.20884/1.oa.2016.12.2.107 article EN cc-by Omni-Akuatika 2016-11-01

Abstract Siombak Lake is a brackish or coastal lake in Medan, Indonesia. Water fluctuation the was affected by sea tide, so it more appropriately called tidal lake. Thus influence of tides could affect quality water lake, especially temperature, salinity, dissolved oxygen, and pH. The purposed this study to describe profile pH waters Siombak. Lake. This conducted June July 2018. data measured were analyzed spatially (horizontally) vertically. results showed no significant difference...

10.1088/1755-1315/260/1/012075 article EN IOP Conference Series Earth and Environmental Science 2019-05-01

The intertidal zone is a waters area directly affected by the contamination of plastic debris from land and sea. aim this research were to analyze relation sediment texture macro- micro abundance also determine appropriate management strategy. This was conducted in Jaring Halus Village Langkat Regency North Sumatera Province on February-April 2017. Plastic collected using quadrat transect. Sediment with correct, up depth least 30 cm. Abundance Station 1 positively tolerated clay (0.509),...

10.1088/1755-1315/122/1/012101 article EN IOP Conference Series Earth and Environmental Science 2018-02-01

A novel chromene, (S)-2-methyl-2-(4-methylpent-3-enyl)-6-(propan-2-ylidene)-3,4,6,7-tetrahydropyrano[4,3-g]chromen-9(2H)-one (1), was isolated from the leaves of Peperomia pellucida (Piperaceae). The chemical structure 1 determined by spectroscopic methods and comparison with those related compounds previously reported.

10.3390/m855 article EN cc-by Molbank 2015-04-21

Plastics pollution in coastal areas is one of the topics that have received more attention over past few years. The intertidal zone a waters area directly affected by contamination plastic waste from land and sea. purpose this study was to analyze types abundance its impact on macrozoobenthos abundance. This research conducted at Pesisir Desa Jaring Halus February-April 2017. Macrozoobenthos macro - micro were collected using quadratic transect. Sediments with core, depth 30 cm. Microplastic...

10.1088/1755-1315/122/1/012102 article EN IOP Conference Series Earth and Environmental Science 2018-02-01

The study was conducted to determine the condition of habitat and diversity fish in watershed Wampu. conditions determined by measuring parameters temperature, brightness, current velocity, depth, DO, pH, type substrate, width river. Nekton sampled using electrofishing units at voltage 15 volt 9 amperes. characteristic upstream large stones gravel, sand with a fast flow clear waters. Physical-chemical waters upper watersheds Wampu is still suitable for fish, crabs, shrimp live good...

10.13170/depik.6.2.5982 article ID cc-by DEPIK 2017-04-19

Abstract Siombak Lake is a tidal lake whose waters are affected by Belawan in the Malacca Strait. The characteristics of dynamic, especially its salinity. existence salinity causes and surrounding area growth mangrove. This study aims to map distribution condition mangrove forests Lake. research was carried out Lake, Medan City, North Sumatra Province August 2019. data were collected vegetation density at site. results on found 14 species There 2 that rarely before, location, namely...

10.1088/1755-1315/454/1/012131 article EN IOP Conference Series Earth and Environmental Science 2020-02-01

Sembilan Island was one of the 17 islands located in East Coast North Sumatra. This island is surrounded by mangrove with varying thickness and density. Information on identification potential this already reported but limited to a narrow area. about value status ecology have not been written, so it needed carry out for study ecological analysis. information could be used later as reference sustainable management. The objective determine mangroves. research conducted September 2015. data...

10.13170/depik.5.3.5656 article ID cc-by DEPIK 2016-12-14

Abstract. Muhtadi A, Pulungan Nurmaiyah, Fadlhin Melati P, Sinaga RZ, Uliya R, Rizki M, Rohim N, Ifanda D, Leidonald Wahyuningsih H, Hasani Q. 2020. The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia. Biodiversitas 21: 3707-3719. is very dynamic estuary ecosystem and vulnerable to environmental stresses disturbances. Plankton an aquatic organism that easily affected by pressures This study aimed reveal phenomenon lakes was conducted at...

10.13057/biodiv/d210838 article EN Biodiversitas Journal of Biological Diversity 2020-07-24

Type 2 diabetes mellitus (T2DM) is a chronic disease with high-cost treatment. This study aimed to analyze the cost-effectiveness of T2DM treatment in hospitalized patients complications kidney and peripheral vascular (PVD) Indonesia by focusing on Health Social Security Agency (BPJS Kesehatan). An observational was applied collecting data retrospectively from patients’ medical record at biggest public hospital West Java Province, Indonesia. Two perspectives payer healthcare provider were...

10.3390/healthcare9020211 article EN Healthcare 2021-02-16

Abstract Siombak Lake is a tidal lake in Indonesia. The dynamics of the lake’s waters experience two high tides and low within 24 hours (except during neap water). Groups freshwater, brackish, marine organisms make up Lake’s aquatic biota, which varies with seasons conditions. purpose this study to clarify how biodiversity lakes impacted by dynamics. This research was conducted at Siombak, Medan City, North Sumatra Province. Data collection carried out from September 2018 August 2019....

10.1088/1755-1315/1302/1/012061 article EN IOP Conference Series Earth and Environmental Science 2024-02-01

The process of deploying and towing the survey equipment for several marine activities is essential since it visualises seabed improves data accuracy. Since deployed to an underwater level, risk arises with deployment. These risks include potential contact submerged objects seabed, which can result in loss have detrimental environmental consequences. This study aims analyse risk-associated factors related using Fault Tree Analysis (FTA) Bayesian Network (BN). constructed FTA was converted...

10.12962/j25800914.v8i1.20466 article EN International Journal of Offshore and Coastal Engineeing 2024-05-31

Abstract The presence of plastic waste in waters, both macro and micro forms, has been a widely researched topic various studies at different observation sites. This underlies the need to study spatial distribution microplastics sediments Belawan estuary. In addition fact that no research conducted on this area before, can provide up-to-date information further analysis abundance Estuary area. purpose is determine characteristics Estuary, North Sumatra. was from September December 2023....

10.1088/1755-1315/1413/1/012009 article EN IOP Conference Series Earth and Environmental Science 2024-11-01

In silico molecular docking and ADME/T analysis of plant compounds against IL17A IL18 targets in gouty arthritisSowmya Hari

10.7324/japs.2014.40213 article EN cc-by Journal of Applied Pharmaceutical Science 2014-01-01

Lake Siombak is a tidal lake that an estuary around the covered with various mangrove trees. It interesting to study fish's spatial and temporal distribution as unique distinctive ecosystem. This research was conducted for year (from September 2018 August 2019). Fish sampling performed by installing gill nets (mesh size 1 inch) cast 0.5 inch). Gill were installed at high low tides during full moon. showed there 27 species of 20 families. Tilapia, Mudskipper, Indo-pacific tarpon, mainly Rice...

10.4308/hjb.30.3.421-431 article EN cc-by-nc HAYATI Journal of Biosciences 2023-01-18

Abstract. Rohim N, Sulistiono, Yulianda F, Muhtadi A. 2024. Diversity and ecological drivers of fish in Singkil Swamp Wildlife Reserve, Aceh, Indonesia. Biodiversitas 25: 2849-2856. Reserve (SSWR) is a conservation area Aceh District, Indonesia, that has an important role maintaining the sustainability fisheries resources on coast. This study analyzes biodiversity factors influencing distribution SSWR waters. The data were collected at five stations (Station I II watershed while Station III,...

10.13057/biodiv/d250706 article EN Biodiversitas Journal of Biological Diversity 2024-07-30

Siombak lake (28 ha area) was a salty located in Medan coastal, Indonesia. Water fluctuation influenced by the sea tide. Therefore, it needed to do morphometry dynamical study as first impression of physical characteristic. The purpose this understand morphometry. research done September 2016. Lake mapping making 100 line zig zag and draw with ArcMap. Bathymetry showed that bottom sloping at center part west southeast lake, steeping north, south east. has shoreline length 2,535.78 m, SDI...

10.20884/1.oa.2017.13.2.174 article EN cc-by Omni-Akuatika 2017-11-29

Abstract Tidal lakes are unique because of the fluctuations water in lake influenced by sea tides. Therefore, also called brackish or salty lakes. Thus, organisms that live must be able to adapt dynamics changes. study biodiversity flora and fauna is interesting related dynamic environments. This research was carried out Siombak Lake, Medan City, North Sumatra Province from June July 2018. The data collected were form (mangroves aquatic plants) (ictiofauna nekton which fish, shrimp, crab,...

10.1088/1755-1315/260/1/012105 article EN IOP Conference Series Earth and Environmental Science 2019-05-01
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