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All Journal Jurnal Teknik Elektro JURNAL BIOLOGI INDONESIA Journal Informatic, Education and Management (JIEM) Jurnal Pengabdian Multidisiplin Scientica: Jurnal Ilmiah Sains dan Teknologi Kultura: Jurnal Ilmu Sosial dan Humaniora
M. Reza
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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Serapan Karbondioksida (CO2) Jenis-Jenis Pohon di Taman Buah "Mekar Sari" Bogor, Kaitannya dengan Potensi Mitigasi Gas Rumah Kaca Hidayati, N.; Reza, M.; Juhaeti, T.; Mansyur, M.
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (460.536 KB) | DOI: 10.14203/jbi.v7i1.3134

Abstract

ABSTRACTCarbondioxide (CO2) Absorption by Trees in "Mekar Sari" Fruit Garden, Bogor, in Relationto Green house Gases Mitigation. Biological diversity can make a significant contribution toreducing the build-up of greenhouse gases in the atmosphere. A biological diverse tropicalforest with a diverse plant species typically stores 50 times more carbon per unit area comparedto monoculture plantation replacing it. Thus, the trees in forests have an essential role in thefunctioning of the terrestrial biosphere, especially in the carbon cycle. Yet wild tree photosynthesesare poorly studied than crop photosynthesis for several reasons: the large number ofspecies; difficulty in measuring photosynthesis of entire trees or of forest stands. This researchaims to assess the contribution of biological diversity in CO2 absorption by analyzing thephysiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyllcontent) of tree species in "Mekar Sari" fruit garden, Bogor. The results will provideinformation on carbon sequestration of some tree species suitable for revegetation. Variance inCO2 assimilation rate is large among trees species. The results showed that there was a widerange of variation of CO2 assimilation rate between tree species. The overall CO2 assimilationrate ranged 2.33 - 13.42 ?molm-2s-1. The highest was Matoa (13.42 molm-2s-1 ) , followed byKacapi (12.50 ?molm-2s-1), Durian (11.00 ?molm-2s-1) and Nangka (11.00 ?molm-2s-1). Transpirationrate was recorded between 4.29 - 9.50 molm-2s-1. The rate of CO2 assimilation wasaffected by incident radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyllcontent. Correlation between CO2 assimilation and Q leaf under certain environmental conditionwas considerably high. Variance in stomatal conductance and transpiration rate variedamong tree species and were related to light intensity.Key words: Photosynthesis, CO2 absorption, trees
An Example of Utilizing Stochastic Approach for Investigating Network Constraints (Congestions) on Horizontally Operated Power Systems with Distributed Generation Reza, M.; Papaefthymiou, G.; H. Schavemaker1, P.; , 2
Jurnal Teknik Elektro Vol 6, No 2 (2006): SEPTEMBER 2006
Publisher : Institute of Research and Community Outreach

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (156.596 KB) | DOI: 10.9744/jte.6.2.

Abstract

This paper shows an example of a stochastic approach to study the impact of distributed generation (DG) on the network constraints (congestions) in power systems. We assume the DG units to be customer-owned, so that they can be connected to or disconnected from the power system by their owners at random. Therefore, the DG units generate power in a stochastic way. The load in the system shows a random behavior too, and the probability distribution of the aggregated generated power and load demand of the distribution system are calculated using Monte Carlo Simulation (MCS).The network constraints (congestions) are evaluated based on the probability distributions of the power flows that result from the simulations. The method that is applied in this paper, shows that looking at the network constraints with a stochastic approach gives a more complete picture of the network than applying a deterministic method, especially when non-dispatchable DG units play a dominant role. Abstract in Bahasa Indonesia : Makalah ini menunjukkan sebuah contoh pendekatan stokastik untuk mempelajari pengaruh dari pembangkit listrik tersebar (PLT) terhadap konjesti pada jaringan tenaga listrik. Dalam makalah ini diasumsikan bahwa setiap unit PLT dimiliki oleh pemilik independen, sehingga setiap PLT dapat disambung ke atau dilepas dari jaringan listrik oleh pemiliknya secara acak. Sebagai hasilnya, secara keseluruhan PLT tersebut membangkitkan tenaga listrik secara stokastik. Beban dalam jaringan listrik juga memiliki sifat acak. Distribusi peluang dari gabungan pembangkitan dan beban di dalam jaringan distribusi dikalkulasikan dengan menggunakan Simulasi Monte Carlo. Konjesti jaringan dievaluasi dengan berdasarkan pada distribusi peluang dari aliran daya yang dihasilkan melalui simulasi. Metoda yang diterapkan pada makalah ini menunjukkan bahwa pendekatan stokastik memberikan gambaran konjesti jaringan yang lebih lengkap daripada pendekatan deterministik, terutama ketika unit-unit PLT yang dominant digunakan tidak dikendalikan secara terpusat. Kata kunci: system tenaga listrik, pembangkit listrik tersebar, aliran daya, konjesti jaringan, pendekatan stokastik, simulasi Monte Carlo.
SERAPAN KARBONDIOKSIDA (CO2) JENIS-JENIS POHON DI TAMAN BUAH "MEKAR SARI" BOGOR, KAITANNYA DENGAN POTENSI MITIGASI GAS RUMAH KACA Hidayati, N.; Reza, M.; Juhaeti, T.; Mansyur, M.
JURNAL BIOLOGI INDONESIA Vol 7, No 1 (2011): JURNAL BIOLOGI INDONESIA
Publisher : Perhimpunan Biologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jbi.v7i1.3134

Abstract

ABSTRACTCarbondioxide (CO2) Absorption by Trees in "Mekar Sari" Fruit Garden, Bogor, in Relationto Green house Gases Mitigation. Biological diversity can make a significant contribution toreducing the build-up of greenhouse gases in the atmosphere. A biological diverse tropicalforest with a diverse plant species typically stores 50 times more carbon per unit area comparedto monoculture plantation replacing it. Thus, the trees in forests have an essential role in thefunctioning of the terrestrial biosphere, especially in the carbon cycle. Yet wild tree photosynthesesare poorly studied than crop photosynthesis for several reasons: the large number ofspecies; difficulty in measuring photosynthesis of entire trees or of forest stands. This researchaims to assess the contribution of biological diversity in CO2 absorption by analyzing thephysiological characteristics (photosynthesis, transpiration, stomatal conductance, leaf chlorophyllcontent) of tree species in "Mekar Sari" fruit garden, Bogor. The results will provideinformation on carbon sequestration of some tree species suitable for revegetation. Variance inCO2 assimilation rate is large among trees species. The results showed that there was a widerange of variation of CO2 assimilation rate between tree species. The overall CO2 assimilationrate ranged 2.33 - 13.42 ?molm-2s-1. The highest was Matoa (13.42 molm-2s-1 ) , followed byKacapi (12.50 ?molm-2s-1), Durian (11.00 ?molm-2s-1) and Nangka (11.00 ?molm-2s-1). Transpirationrate was recorded between 4.29 - 9.50 molm-2s-1. The rate of CO2 assimilation wasaffected by incident radiation and thus the quantum leaf (Q leaf) as well as leaf chlorophyllcontent. Correlation between CO2 assimilation and Q leaf under certain environmental conditionwas considerably high. Variance in stomatal conductance and transpiration rate variedamong tree species and were related to light intensity.Key words: Photosynthesis, CO2 absorption, trees
Pendalaman Penggunaan Tensis bahasa Inggris dalam Kalimat Sederhana bagi Pelajar Usia Muda Idaryani, Idaryani; Fidyati, Fidyati; Khairani, Assyfa; Reza, M.
Jurnal Pengabdian Multidisiplin Vol. 3 No. 3 (2023): Jurnal Pengabdian Multidisiplin
Publisher : Kuras Institute & Scidac Plus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51214/00202303697000

Abstract

Pengabdian pada masyarakat ini bertujuan untuk mengkaji penggunaan aspek tensis dalam bentuk present tense pada pemelajar usia muda yang berada di Gampong Blang Punteut Lhokseumawe, Aceh, Indonesia. Kegiatan ini berfokus pada penggunaan aspek tense dalam kalimat sederhana dalam tiga jenis kalimat yang berbeda (kalimat pernyataan, kalimat negatif, dan kalimat tanya) dengan penggunaan dua jenis kata bantu yaitu tobe dan do/does. Dengan demikian, peserta didik dapat meningkatkan pemahamannya dalam menyusun kalimat sederhana untuk mengungkapkan aktivitas sehari-hari atau situasi umum. atau kondisi di sekitar mereka dengan kalimat yang efektif dan penggunaan kata bantu yang tepat. Kegiatan ini dilakukan kepada 15 pelajar usia muda berusia 11 hingga 16 tahun dengan menggunakan metode pengajaran TPR (Total Physical Respond). Para peserta adalah pelajar yang masih aktif belajar di lembaga pendidikan formal mulai dari tingkat sekolah dasar hingga sekolah menengah atas. Kegiatan tersebut dilaksanakan selama 10 kali pertemuan dengan mengenalkan perbedaan penggunaan kata kerja bantu yang berbeda sebagai predikat kalimat yang berbeda, yaitu predikat kata kerja bantu tobe dan do/does. Hasil pelaksanaan pengabdian ini menunjukkan bahwa peserta yang mempelajari present tense dengan penggunaan kata bantu yang tepat mampu menggunakan tensis dengan tepat dalam kalimat sederhana membuat kalimat secara mandiri dan mereka juga mampu membedakan jenis kata kerja bantu yang digunakan dalam kalimat bahasa Inggris.
ANALISIS DAMPAK BANJIR DI PELALAWAN AKIBAT DARI LUAPAN SUNGAI KAMPAR diah, Halimatussa’; Riskiani , Fitri; Azizaturrohmah, Nur; Reza, M.; Fatmawati, Fatmawati
Scientica: Jurnal Ilmiah Sains dan Teknologi Vol. 3 No. 1 (2024): Scientica: Jurnal Ilmiah Sains dan Teknologi
Publisher : Komunitas Menulis dan Meneliti (Kolibi)

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Abstract

Banjir yang melanda Kabupaten Pelalawan, Riau, pada tahun 2023 disebabkan oleh luapan Sungai Kampar, diperburuk oleh pembukaan pintu waduk PLTA Koto Panjang. Curah hujan yang tinggi dan sedimentasi sungai menjadi faktor utama penyebab banjir, mengakibatkan banyak desa terendam dengan ketinggian udara mencapai satu meter. Dampak dari bencana ini sangat signifikan, termasuk kerusakan infrastruktur, gangguan pada aktivitas belajar mengajar di puluhan sekolah, serta ancaman akibat kesehatan penyakit yang muncul di daerah terdampak. Penanggulangan dilakukan melalui perbaikan infrastruktur dan pembersihan saluran drainase, serta upaya mitigasi non-struktural seperti edukasi masyarakat dan pengembangan sistem peringatan dini Penelitian ini bertujuan menganalisis faktor penyebab, dampak, dan strategi penanggulangan banjir di Pelalawan.
EKSPLORASI POTENSI WISATA ALAM AIR TERJUN LUBUK NGINIO KECAMATAN KUOK Khusnayain, Ahmadul; Fattah , M. El; Reza, M.; Nirwana , Nana; Novita , Yulia
Kultura: Jurnal Ilmu Hukum, Sosial, dan Humaniora Vol. 2 No. 11 (2024): Kultura: Jurnal Ilmu Hukum, Sosial, dan Humaniora
Publisher : Kultura: Jurnal Ilmu Hukum, Sosial, dan Humaniora

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Abstract

Wisata alam mengalami pertumbuhan pesat di industri pariwisata global, ditandai dengan potensi keindahan alam dan kekayaan budaya lokal yang menjadi magnet bagi wisatawan. Sektor ini juga memberikan kontribusi ekonomi signifikan melalui penciptaan lapangan kerja dan peningkatan sumber pendapatan bagi masyarakat, serta pemasukan bagi pemerintah. Penelitian ini berfokus pada Air Terjun Lubuk Nginio di Desa Merangin, Kecamatan Kuok, Kabupaten Kampar, yang terkenal akan keindahan alam dan kearifan lokal yang dapat mendukung pariwisata berkelanjutan. Menggunakan metode kualitatif, data dikumpulkan melalui observasi dan wawancara, menganalisis potensi wisata yang dihadirkan air terjun dan lingkungan sekitarnya. Hasil penelitian menunjukkan bahwa kombinasi keindahan alam, aktivitas pariwisata, dan keterlibatan masyarakat lokal memiliki dampak positif terhadap ekonomi sekaligus konservasi lingkungan. Air Terjun Lubuk Nginio tidak hanya menarik wisatawan, tetapi juga memperkuat identitas budaya dan mendorong kolaborasi antara masyarakat dan pemangku kepentingan dalam pengelolaan untuk memastikan kelestarian bagi generasi mendatang.
Analysis Of The Influence Of PAD and DAU On Capital Expenditure In The Bireuen Regency Government Safwatul Muna; Qamara Nuzula; M. Reza; Siti Sahar Maulidia; Zurrahmah
Journal Informatic, Education and Management (JIEM) Vol 8 No 1 (2026): FEBRUARY (CALL FOR PAPERS)
Publisher : STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61992/jiem.v8i1.192

Abstract

This study aims to analyze the effect of Regional Original Revenue (PAD) and General Allocation Fund (DAU) on Capital Expenditures in the Government of Bireuen Regency. Capital Expenditures are an important indicator in supporting sustainable regional development. The research uses a quantitative method with a multiple linear regression approach. The data used are secondary data obtained from the regional government financial reports during the 2017–2023 period. The results of the F-test show that PAD and DAU simultaneously have a significant effect on Capital Expenditures, with an F-count value of 9.119 greater than the F-table value of 6.94 and a significance of 0.0032. However, the partial t-test results indicate that only PAD significantly affects Capital Expenditures, with a t-count of 4.185 and a significance of 0.014, while DAU does not show a significant effect, with a t-count of 1.184 and a significance of 0.302. The coefficient of determination (R²) of 0.820 indicates that 82% of the variation in Capital Expenditures can be explained by PAD and DAU. These findings highlight the importance of strengthening local revenue capacity to enhance regional development through capital spending.
Co-Authors 2 Azizaturrohmah, Nur diah, Halimatussa’ Fatmawati Fatmawati Fattah , M. El Fidyati, Fidyati G. Papaefthymiou Hidayati, N. Hidayati, N. Idaryani Idaryani Juhaeti, T. Juhaeti, T. Khairani, Assyfa Khusnayain, Ahmadul M. Mansyur, M. Nirwana , Nana Novita , Yulia P. H. Schavemaker1 Qamara Nuzula Riskiani , Fitri Safwatul Muna Siti Sahar Maulidia Zurrahmah