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All Journal Jurnal Natur Indonesia Teosofi: Jurnal Tasawuf dan Pemikiran Islam Journal of Degraded and Mining Lands Management Jurnal Riau Biologia JURNAL ENGGANO Prosiding Seminar Nasional Sains dan Teknologi Terapan Journal of Community Engagement Research for Sustainability JERNIH: Journal of Environmental Engineering and Hygiene Jurnal KALANDRA
Ahmad Muhammad
Universitas Islam Negeri Sunan Ampel Surabaya
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Nursing Public Health Social Sciences Other

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Keanekaragaman Kupu-Kupu di Kawasan Gunong Bonsu Kabupaten Rokan Hulu, Provinsi Riau BIBAS, ELPE; MUHAMMAD, AHMAD; SALBIAH, DESITA
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

This study concerned the species diversity and abundance of butterflies in Gunong Bonsu, an area situatedin Rokan Hulu District, Riau Province. Sampling was conducted within the period of Januari-April 2015in four different habitat types, i.e. secondary forest, rubber jungle, palm oil plantation and tour sites. Twostandardized sampling methods were combined, i.e. sweeping and trapping using fruit bait along transect(100 m-long fixed transect in each selected site). A total of 1641 individuals were captured with 189butterflies species were identified, including 14 species of Papilionidae, 105 species of Nymphalidae, 19species of Pieridae, 14 species of Lycaenidae, and 19 species of Hesperiidae. Among these species, onlyTroides amphrysus (birdwing butterfly) which is protected by the law at national as well as internationallevel. The species diversity index for Gunong Bonsu area is very high (H’= 4,53).Keywords: abundance, butterflies, species diversity index
Sebaran dan Kelimpahan Lipas Kayu (Panesthia angustipennis angustipennis) di Bawah Tegakan Akasia (Acacia crassicarpa) dan Hutan Alam pada Lahan Gambut NURARIFIN, IRFAN; MUHAMMAD, AHMAD; SALBIAH, DESITA
Jurnal Riau Biologia Vol 1, No 1 (2016)
Publisher : Jurusan Biologi FMIPA Universitas Riau

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Abstract

Residual wood under acacia (Acacia crassicarpa) plantation forest on peatland harbors diverse insects,among which is the wood-feeding cockroaches (Panesthia angustipennis angustipennis. Blaberidae,Blattodea). This insect appears to enhance nutrient cycling through consumption and maceration ofdecaying wood. The purpose of this study was to assess the distribution and abundance of this insect inthis pulpwood plantation and nearby natural forest remnants. Sampling has been done in plantationblocks representing <1, 2-3 and 5-6 year-old stands and also in natural forest. Results showed that woodfeedingcockroaches was most frequently found (80,0 %) in 2 year-old acacia stand, whereas it was leastfrequently encountered in natural forest. Likewise, it was most abundant (9,500 individuals/ha or 0.95individuals/m2) in the former, while it was least abundant (2,500 individuals/ha or 0.25 individuals/m2) inthe latter. In general, the insect was more abundant in the plantation forest than in natural forest.Key words: Pulpwood plantation forest, residual wood, wood-feeding cockroaches .
Relasi Sufisme dengan Modernitas dalam Perspektif ‘Abd al-Ḥalîm Maḥmûd Muhammad, Ahmad
TEOSOFI: Jurnal Tasawuf dan Pemikiran Islam Vol. 4 No. 1 (2014): June
Publisher : Program Studi Filsafat Agama Fakultas Ushuluddin dan Filsafat UIN Sunan Ampel Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (621.168 KB) | DOI: 10.15642/teosofi.2014.4.1.88-118

Abstract

This article discusses the theme of Sufism, modernity, and the relationship between the two. This study concludes that according to Mahmûd, Sufism can deliver the people towards the true knowledge. In order to obtain this knowledge, the method of ittibâ? to al-Qur?ân and Sunnah is used. The method is implemented through purification of the soul. This method differs from the two methods used in modernity, namely the Cartesian philosophical method and Baconian observation method. The last two methods are only able to produce empirical-rational knowledge. According to Mahmûd, both methods are only appropriate when used in the context of physical science, not of metaphysics and moral issues. The last two issues are more appropriate when viewed from the perspective of Sufism, which is guided by revelation. Mahmûd argued that the relationship between Sufism and modernity is a complementary relationship, in which each of the two aspects is a complementary entity to another. It means that modernity will be spiritually empty without Sufism on one hand and Sufism will also be more meaningful when supported by modern science on the other.
Struktur Floristik Hutan di Kawasan Lindung Sempadan Sungai dalam Areal Hutan Tanaman Industri Qomar, Nurul; Bahdarsyah, Bahdarsyah; Nugroho, P Agung; Rohaini, Rahmi A; Muhammad, Ahmad
Jurnal Natur Indonesia Vol 10, No 1 (2007)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.10.1.24-30

Abstract

This study was carried out in riparian conservation forests within a monospecific pulpwood estate in Sorek,Pelalawan District, Riau. The remaining natural forests comprised lowland rainforest (at Sei Buluh and Tolamriversides), mixed swamp forest (at Telayap riverside), and pole forest (at Rangsang riverside). The objective of thecurrent study was to describe the floristic structure of each forest type at the conservation areas in concern.Fifteen transects (width of 20 m) were established at all sites with a total length of 8.080 m. Quadrates plots of 20x 20 m were established with continue on these transect for tree sampling (dbh > 20 cm) and smaller quadrates(10 x 10 m) were nested on each one of the former for pole sampling (dbh 10 – 20 cm). The parameters used in thisstudy were Importance Value (IV), species richness (Margalef Index = R1 and Menhinick Index = R2), and Diversity Index (Shannon = H’ and Simpson = D). Results showed that in tree stratum, the largest basal area (11.25 m2ha-1) and the highest diversity was found at Telayap’s riverside (H’ = 3.70 and D = 0.98). Species richness was most profound at Tolam riverside (R1 = 10.43 and R2 = 2.83). Rangsang’s riverside possessed the highest tree density (105 individuals ha-1) but with the smallest dbh (26.5 cm). This forest was a peat-swamp forest predominating by bintangur (Calophyllum pulcherimum). At the pole stratum, the largest basal area (7.00 m2ha-1) and the highest diversity was found at Tolam riverside (H’ = 3.39 and D = 0.96). Species richness was most profound at Telayap’s riverside (R1 = 8.89 and R2 = 2.64). The highest pole density (380 individuals ha-1) was observed at Sei Buluh’s riverside, in which mempening (Quercus lucida Roxb.) was predominating. Acacia mangium was establishing very well at all sites, indicating its adaptability and potentially invasive feature.
ANALISA JALUR KRITIS PADA PENJADWALAN PROYEK PENGEMBANGAN SISTEM INFORMASI MENGGUNAKAN TEKNIK CRITICAL PATH METHOD (CPM) (STUDI KASUS : PT. XYZ) Muhammad, Ahmad; Kurniawan, Bagus; Mufidah, Arnys Primaveria; Dai, La David Michael Bin La; Pakarbudi, Adib
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2021: Peluang dan Tantangan Peningkatan Riset dan Teknologi di Era Pasca Covid-19
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Kebutuhan Sistem Informasi yang meningkat telah memicu lahirnya penyedia jasa konsultan SI/TI. PT XYZ merupakan perusahaan jasa konsultan SI/TI yang berada di kota Surabaya. Saat ini PT. XYZ telah memiliki berbagai macam klien dan proyek SI/TI. Namun dibalik pencapaian tersebut PT XYZ masih memiliki kendala yang dapat mempengaruhi waktu pengerjaan proyek yang dimiliki. Hal ini diakibatkan kurangnya perencanaanoleh tim proyek PT. XYZ sehingga mengakibatkan munculnya keterlambatan dalam penyelesaian proyeknya. Dari permasalahan ini penulis mencoba mengusulkan untuk melakukan Analisa jalur kritis pada aktivitas proyek SI yang dimiliki menggunakan Teknik Critical Path Method (CPM). Hasil dari Analisa tersebut menunjukkan bahwa Teknik CPM dapat diterapkan dalam proyek pengembangan Sistem Informasi yang dilakukan oleh PT. XYZ. Teknik ini memungkinkan tim proyek PT. XYZ mengetahui aktivitas penting yang pe Penelitian ini juga menghasilkan temuan lain yang mengatakan bahwa durasi waktu juga dipengaruhi oleh jumlah anggota tim proyek, teknologi dan kerangka kerja yang digunakan dalam pengembangan sistem informasi.
Inventarisasi Ikan Tembakul (Oxudercinae) dari Lingkungan Intertidal Kabupaten Bengkalis Juliana, Juliana; Mahatma, Radith; Muhammad, Ahmad
JURNAL ENGGANO Vol. 8 No. 2 (2023)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.8.2.165-171

Abstract

Ikan tembakul (mudskipper) banyak dijumpai di lingkungan intertidal baik mangrove maupun pantai Kabupaten Bengkalis. Namun informasi mengenai jenis-jenis ikan tembakul di Kabupaten Bengkalis masih terbatas. Penelitian ini bertujuan untuk mengetahui jenis-jenis ikan tembakul yang ada di lingkungan intertidal Kabupaten Bengkalis. Pengambilan sampel ikan tembakul dilakukan pada Oktober 2020 dengan menggunakan tangguk, pancing atau langsung dengan tangan di Tanjung Leban dan Bukit Batu Laut. Hasil penelitian ini ditemukan lima spesies dari tiga genus ikan tembakul yang terdiri dari Boleophthalmus boddarti, Periophthalmodon schlosseri, Pn. septemradiatus, Periophthalmus chrysospilos dan P. variabilis.
Analisa dan Desain Pelat Lantai Beton Bertulang pada Bangunan Madrasah Tsanawiyah 1 Boalemo: Analysis and Design of Reinforced Concrete Floor Slabs in Madrasah Tsanawiyah 1 Boalemo Building Muhammad, Ahmad; Datau, Zainun
JERNIH : Journal of Environmental Engineering and Hygiene Vol. 3 No. 1 (2025): JERNIH: Journal of Environmental Engineering and Hygiene
Publisher : Universitas PGRI Argopuro Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31537/jernih.v3i1.2329

Abstract

Bangunan sekolah merupakan bagian penting dari fasilitas pendidikan yang harus memenuhi persyaratan keselamatan, kenyamanan dan keamanan sehingga dapat meningkatkan kualitas pembelajaran secara keseluruhan. Madrasah Tsanawiyah I Boalemo tidak memiliki fasilitas yang memadai sehingga pemerintah memberikan dukungan berupa rekonstruksi bangunan. Salah satu elemen penting dalam bangunan madrasah adalah pelat lantai yang berfungsi menerima dan mentransmisikan beban-beban yang bekerja pada bangunan. Penelitian ini bertujuan untuk menganalisis pelat lantai beton bertulang dan mendesain pelat lantai yang optimal pada Gedung Madrasah Tsanawiyah I Boalemo. Metode yang digunakan pada penelitian ini yaitu metode manual dengan perhitungan analisis terhadap pelat lantai yang digunakan pada bangunan madrasah dan mendesain pelat lantai dengan menggunakan metode koefisien momen perhitungan pelat dua arah. Hasil penelitian terhadap analisis pelat lantai menunjukkan bahwa nilai momen nominal kekuatan lentur setelah direduksi lebih besar daripada nilai momen ultimate sehingga dapat dinyatakan aman dan nyaman untuk difungsikan karena memenuhi standar keamanan terhadap batas momen nominal tereduksi dan batas lendutan jangka panjang (lebih dari 5 tahun). Pelat lantai didesain dengan 5 (lima) segmen yang berbeda. Segmen 1a, 1b, 2a dan 2b memiliki dimensi 900 mm x 250 mm dengan tebal 120 mm. Detail penulangan yang digunakan pada segmen-segmen tersebut seragam, yaitu menggunakan diameter 10 mm dengan jarak antar tulangan 225 mm, baik untuk tulangan lapangan maupun tumpuan. Segmen 3 memiliki ukuran yang lebih kecil, yaitu 430 mm x 300 mm dengan ketebalan pelat 120 mm dan detail penulangan yang sama, yaitu tulangan diameter 10 mm dengan jarak 225 mm untuk tulangan lapangan dan tumpuan.
Mapping peat thickness and groundwater level using a portable electromagnetic instrument in Indragiri Hilir, Riau, Indonesia Sutikno, Sigit; Yusa, Muhamad; Hendri, Andy; Kusairi, Muhammad; Muhammad, Ahmad; Qomar, Nurul
Journal of Degraded and Mining Lands Management Vol. 12 No. 3 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.123.7431

Abstract

Peatlands play a crucial role in the global carbon cycle, water regulation, biodiversity conservation, research, education, and recreation. Peat thickness and groundwater level (GWL) are key parameters for optimizing these peatland functions; therefore, mapping peat thickness and GWL quickly, accurately, and cost-effectively is essential. This study applied a geophysical survey using a portable electromagnetic instrument to estimate peat thickness and GWL. The instrument, which is simple to operate and wirelessly connected to a mobile phone, enables rapid measurement and visualization of subsurface resistivity. A research site in Indragiri Hilir Regency, Riau Province, Indonesia, was picked up as an experiment site to test the instrument. Three transects with measurement path lengths of 100 m each and a distance of about 1.4 km each were designed for the experiment. To validate the resistivity data against subsurface stratigraphy, core sampling was conducted at three points along each transect. The results demonstrated that the electromagnetic method effectively identified the interface between peat soil and the underlying marine clay. Analysis revealed that the resistivity values for unsaturated peat, saturated peat, and saturated clay were 68-81 ohm m, 75-96 ohm m, and 82-115 ohm m, respectively. These findings suggest that GWL mapping and peat stratigraphy characterization can be accurately achieved using this method.
Revitalisasi Usaha Budidaya Lebah Kelulut di Desa Tanjung Sari Kabupaten Kepulauan Meranti, Provinsi Riau: Masalah dan Solusinya Muhammad, Ahmad; Qomar, Nurul; Mahatma, Radith; Pranata, Syafroni
Journal of Community Engagement Research for Sustainability Vol. 2 No. 2 (2022): Maret
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.237 KB) | DOI: 10.31258/cers.2.2.84-92

Abstract

Meliponiculture emerged at Tanjung Sari, a village in Kepulauan Meranti Regency, Riau Province, in 2016 and has been growing thereafter. According to our observations there were at least three main obstacles faced by colony owners at this village, i.e. colony loss, low honey production, and marketing-related issues. We attempted to address these issues through a participatory program involving colony owners of the village. Colony loss had been mainly caused by swarming and mortality and was believed to have been triggered by inappropriate conditions of the maintenance (such as too much exposure to the sun and rain as well as unrepelled diturbances by other animals. Such conditions had also been associated with low honey production. Therefore we encouraged villagers to improve the conditions by providing supporter and roof for their colonies. In regard with marketing issues, we encouraged villagers to establish a honey cooperative under BUMDES, which should regulate honey price, absorb the produced honey, and also handle its marketing to outer counterparts. In addition, the cooperative should facilitate communications between members and information disemination, and mediate negotiation with potential buyers. The benefits gained by participants were: (1) the improvement of technical knowledge of colony maintenance; (2) the improvement of colony maintenance quality that would reduce risk of colony loss; and (3) the establishment of a cooperative that would be a body that would facilitate the necessities previously mentioned. The present paper describes the processes and results in details.
Sosialisasi Potensi Pemanfatan Kanal untuk Budidaya Ikan di Kampung Benteng Hilir Kecamatan Mempura Kabupaten Siak Setyawatiningsih, Sri Catur; Susanto, Eki; Yulminarti; Fatonah, Siti; Muhammad, Ahmad
KALANDRA Jurnal Pengabdian Kepada Masyarakat Vol 3 No 6 (2024): November
Publisher : Yayasan Kajian Riset Dan Pengembangan Radisi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55266/jurnalkalandra.v3i6.450

Abstract

Kampung  Benteng Hilir merupakan salah satu desa di Kecamatan Mempura, Kabupaten Siak,  Riau. Kejadian banjir sering terjadi di Kecamatan Mempura, termasuk di Kampung Benteng Hilir. Penyebab banjir antara lain karena curah hujan yang tinggi, yang mengakibatkan meluapnya air dari kanal-kanal yang dialirkan melalui Sungai Tonggak dan Sungai Jernih. Kegiatan ini bertujuan untuk mengatasi permasalahan menurunnya pendapatan petani akibat banjir dengan memanfaatkan kanal di perkebunan kelapa sawit untuk budidaya ikan. Metode yang diterapkan selama kegiatan meliputi: sosialisasi penyampaian materi, simulasi pembuatan kolam ikan di kanal dengan metode jaring, tanya jawab dan evaluasi. Hasil dari sosialisasi ini sebagaian besar penduduk Benteng Hilir berprofesi sebagai petani kelapa sawit yang dalam masa produktif. Terdapat jenis-jenis ikan yang potensial untuk dibudidayakan oleh penduduk berupa ikan lele dan gabus. Terdapat tiga faktor penyebab kegagalan dalam budidaya sebelumnya, yaitu: banjir, pasang-surut air kanal dan keberadaan predator. Untuk mengatasi penyebab kegagalan tersebut terdapat solusi yakni pembuatan keramba jaring apung yang dapat dimodifikasi.
Co-Authors Andy Hendri, MT, Andy Bagus Kurniawan, Bagus Bahdarsyah Bahdarsyah Dai, La David Michael Bin La Datau, Zainun Desita Salbiah Eki Susanto ELPE BIBAS, ELPE IRFAN NURARIFIN, IRFAN Juliana Juliana Kusairi, Muhammad Mufidah, Arnys Primaveria Muhamad Yusa Nugroho, P Agung Nurul Qomar Pakarbudi, Adib Pranata, Syafroni Radith Mahatma Rohaini, Rahmi A Siti Fatonah Sri Catur Setyawatiningsih Sutikno, Sigit Yulminarti