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ANALISA PERKIRAAN KEMAMPUAN DAYA YANG DIBUTUHKAN UNTUK PERENCANAAN PEMBANGKIT LISTRIK TENAGA SURYA (PLTS) Darma, Surya
JURNAL AMPERE Vol 2, No 1 (2017): JURNAL AMPERE
Publisher : Universitas PGRI Palembang

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ABSTRAKEnergi dalam berbagai hal telah banyak membantu masyarakat. Salah satu energi yang digunakan masyarakat adalah Energi Listrik. Listrik secara tidak langsung telah menjadi salah satu kebutuhan pokok masyarakat untuk beraktifitas sehari-hari seperti menggunakan lampu untuk penerangan, menggunakan komputer untuk pekerjaan, dan bahkan digunakan untuk industri. Sehingga bila kebutuhan listrik tidak terpenuhi dapat menyebabkan berhentinya aktifitas masyarakat sehingga menyulitkan kehidupan manusia sehariâhari. Oleh karena itu diperlukan energi listrik yang efisien dan dapat digunakan masyarakat Salah satu energi listrik yang dapat digunakan untuk masyarakat adalah penggunaan tenaga surya (matahari) sebagai sumber energi listrikKata Kunci : Pembangkit, Energi Listrik, Solar Sel, Sinar Matahari, Energi Â Alternatip.

IDENTIFIKASI STATUS KERUSAKAN TANAH UNTUK PRODUKSI BIOMASSA DI KECAMATAN TANJUNG PALAS TIMUR KABUPATEN BULUNGAN PROVINSI KALTARA Darma, Surya
ZIRAA'AH MAJALAH ILMIAH PERTANIAN Vol 42, No 1 (2017)
Publisher : Pusat Publikasi Jurnal Universitas Islam Kalimantan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31602/zmip.v42i1.637

The purpose of this study identify the parameters of the land degradation, in order to know the level of damage that occurs as a decision-making approach to the problem so that appropriate land productivity does not decreased, even increased as the cultivated area has a function for biomass production.Â The first step was to determine the potential indicative soil damage by overlaying the GIS-based digital maps, such as the map of soil type, slope, rainfall and land cover maps and then with RTRW/K.Â The result obtained that there are 4 classes of indicative damage land, they are very low, low, medium and high.Â The next focus was on the location of the high level damage potential, particularly in the village of Tanah Kuning, sub district of East Tanjung Palas.Â Result from field verification showed that effective soil depth (solum soil) > 150 cm, slope 15-25% and 6 soil samples taken for laboratory analyzes.Â The results of the evaluation of 10 land damage parameters showed that there are 2 parameters exceed a critical threshold, namely the composition of the fractions and pH (acidity) of the soil.Â The parameter exceeds a critical threshold pH found on all samples (6 samples), while the composition of the fraction was only one sample.Â Based on the relative frequency score status of soil damage is minor damage with the limiting factors are composition of sand fraction and the pH of acid soils.Â Remedial action against excessive sand composition was difficult because of permanent nature, while improving the soil pH (very acid) can be reduced with the application of agricultural lime and organic compost.

MRNA NFATC1 EXPRESSION IN GENU OSTEOARTHRITIS WITH EFFUSION Reagan, Muhammad; Hermansyah, Hermansyah; Hidayat, Rachmat; Darma, Surya; Muthia, Putri
Biomedical Journal of Indonesia Vol 6, No 2 (2020)
Publisher : Fakultas Kedokteran Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32539/bji.v6i2.10418

Based on a study conducted by the WHO Global Burden of Disease in 2010 stated, OA ranks 11th, the cause of disability in the world, and ranks 6th in East Asia and the Asia-Pacific countries, ranked 10th in North America, ranked 7th in Eastern Europe , and ranked 13th in Western Europe. Pathogenesis of osteoarthritis (OA) as degenerative joint disease that was once thought caused by a mechanical process. The prevalence, etiology, pathogenesis and progression of OA are still not understood until now, mainly because of the many influencing factors. This type of research is a analytic study. It was conducted in Rheumatology Polyclinic Dr. Mohammad Hoesin Palembang from February to December 2019. Affordable research population is all genu osteoarthritis sufferers with effusion who go to Dr. RSUP Mohammad Hoesin Palembang as 80 samples. Comparison of NFATC1 mRNA levels in genu osteoarthritis patients with effusion shows that there is no difference in gender and history of diabetes, whereas hypertension history and degree of osteoarthritis based on Lawrence Kalgren shows significantly different expression of NFATC1 mRNA. Age with NFATC1 mRNA expression showed no significant correlation, in contrast to BMI, Stroke Test and joint effusion volume showed a weak significant correlation, even though the direction of the correlation was negative on Stroke Test and joint effusion volume.

MRNA NFATC1 EXPRESSION IN GENU OSTEOARTHRITIS WITH EFFUSION Reagan, Muhammad; Hermansyah, Hermansyah; Hidayat, Rachmat; Darma, Surya; Muthia, Putri
Biomedical Journal of Indonesia Vol 6, No 2 (2020)
Publisher : Fakultas Kedokteran Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32539/bji.v6i2.10418

Based on a study conducted by the WHO Global Burden of Disease in 2010 stated, OA ranks 11th, the cause of disability in the world, and ranks 6th in East Asia and the Asia-Pacific countries, ranked 10th in North America, ranked 7th in Eastern Europe , and ranked 13th in Western Europe. Pathogenesis of osteoarthritis (OA) as degenerative joint disease that was once thought caused by a mechanical process. The prevalence, etiology, pathogenesis and progression of OA are still not understood until now, mainly because of the many influencing factors. This type of research is a analytic study. It was conducted in Rheumatology Polyclinic Dr. Mohammad Hoesin Palembang from February to December 2019. Affordable research population is all genu osteoarthritis sufferers with effusion who go to Dr. RSUP Mohammad Hoesin Palembang as 80 samples. Comparison of NFATC1 mRNA levels in genu osteoarthritis patients with effusion shows that there is no difference in gender and history of diabetes, whereas hypertension history and degree of osteoarthritis based on Lawrence Kalgren shows significantly different expression of NFATC1 mRNA. Age with NFATC1 mRNA expression showed no significant correlation, in contrast to BMI, Stroke Test and joint effusion volume showed a weak significant correlation, even though the direction of the correlation was negative on Stroke Test and joint effusion volume.

Sebuah Pengetahuan Penyakit Gout Arthritis Pada Pasien Di Poliklinik Reumatologi RSUP Dr. Mohammad Hoesin Palembang Algifari, M. Ridho Novtriawan; Darma, Surya; Reagan, Muhammad
Sriwijaya Journal of Medicine Vol. 3 No. 1 (2020): Sriwijaya Journal of Medicine
Publisher : Fakultas Kedokteran Universitas Sriwijaya

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Gout is a dominant disease in adult man and found in woman before menopause period. Prevalence of gout n the United States 3.9%, Britain 2.5%, New Zealand 6.1% and in Indonesia 7%. There are 2 pillars of gout treatment, pharmacology and non pharmacology. Non-pharmacological therapy includes patient education, diet and joint rest. Lack of knowledge about lifestyle and things that can cause gout is one of the factors that can increase the incidence of gout arthritis. The aim of this study was to identify patient knowledge about gout arthritis in Rheumatology Clinic Central General Hospital Dr. Mohamma Hoesin Palembang. A total of 80 patients who fit the inclusion criteria were included in the study. The data were obtained from interview of patients at Rheumatology Clinic Central General Hospital Dr. Mohammad Hoesin Palembang on September-November 2019. The result of this study showed that from 80 patients, 21 patients suffered from gout arthritis and 59 patients suffered from non gout arthritis. Knowledge level of gout patients were enough (52,4%) and good (47,6%) meanwhile knowledge level of non gout patient are bad (52,5%), enough (45,8%) and good (1,7 %). Knowledge level of gout patients are better than non-gout patient's in Rheumatology Clinic Central General Hospital Dr. Mohammad Hoesin Palembang.

Sebuah Pengetahuan Penyakit Gout Arthritis Pada Pasien Di Poliklinik Reumatologi RSUP Dr. Mohammad Hoesin Palembang Algifari, M. Ridho Novtriawan; Darma, Surya; Reagan, Muhammad
Sriwijaya Journal of Medicine Vol. 3 No. 1 (2020): Sriwijaya Journal of Medicine
Publisher : Fakultas Kedokteran Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Gout is a dominant disease in adult man and found in woman before menopause period. Prevalence of gout n the United States 3.9%, Britain 2.5%, New Zealand 6.1% and in Indonesia 7%. There are 2 pillars of gout treatment, pharmacology and non pharmacology. Non-pharmacological therapy includes patient education, diet and joint rest. Lack of knowledge about lifestyle and things that can cause gout is one of the factors that can increase the incidence of gout arthritis. The aim of this study was to identify patient knowledge about gout arthritis in Rheumatology Clinic Central General Hospital Dr. Mohamma Hoesin Palembang. A total of 80 patients who fit the inclusion criteria were included in the study. The data were obtained from interview of patients at Rheumatology Clinic Central General Hospital Dr. Mohammad Hoesin Palembang on September-November 2019. The result of this study showed that from 80 patients, 21 patients suffered from gout arthritis and 59 patients suffered from non gout arthritis. Knowledge level of gout patients were enough (52,4%) and good (47,6%) meanwhile knowledge level of non gout patient are bad (52,5%), enough (45,8%) and good (1,7 %). Knowledge level of gout patients are better than non-gout patient's in Rheumatology Clinic Central General Hospital Dr. Mohammad Hoesin Palembang.

Klasterisasi Teknik Promosi dalam Meningkatkan Mutu Kampus Menggunakan Algoritma K-Medoids Darma, Surya
Jurnal Informatika Ekonomi Bisnis Vol. 3, No. 3 (2021)
Publisher : Rektorat Universitas Putra Indonesia YPTK Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37034/infeb.v3i3.87

Promotion technique is one of the methods used by AMIK and STIKOM Tunas Bangsa Pematangiantar in finding new students. By developing promotional techniques that are more effective and efficient, it can produce the information needed to get new student candidates. The data that is processed in this research is the data of new student candidates who come from the AMIK New Student Admissions (PMB) and STIKOM Tunas Bangsa Pematangsiantar. Based on promotional data in 2020, there are several promotions carried out, including through print media, banners, collaboration with SMA / SMK schools in Pematangsiantar city, through alumni, and the web. Furthermore, the data is processed using Rapidminer software. The processing stages are grouped using the K-Medoids algorithm on the data of prospective students, including name, place and date of birth, address, religion, cellphone number, school origin, choice of study program and source of information. Followed by the process of improving the data so that more accurate data is obtained to be processed. The results of the testing of this method are knowing which regions are applying to AMIK and STIKOM Tunas Bangsa Pematngsiantar which are grouped into 2 clusters, namely the highest and the lowest. The K-Medoids algorithm that is used makes a big contribution by providing new information that can be used as a reference for AMIK and STIKOM Tunas Bangsa Pematngsiantar in terms of Promoting New Student Admissions in the coming year.

PENINGKATAN EFISIENSI PEMUPUKAN FOSFOR PADA ULTISOL DENGAN MENGGUNAKAN ABU TERBANG BATUBARA Fahrunsyah, F; Mulyadi, M; Sarjono, Agus; Darma, Surya
Jurnal Tanah dan Sumberdaya Lahan Vol 8, No 1 (2021)
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2021.008.1.22

Ultisol is one type of soil that has a very wide distribution in Indonesia, but the use of this soil faces many obstacles. The main problem in ultisol utilization is the low availability of phosphorus (P) and the low absorption efficiency. Coal fly ash (CFA) is a material that can overcome these problems. The objective of this study was to examine the effect of Application CFA on several soil chemical properties (pH, exchangeable Al, exchangeable Ca and available P), plant growth, yield, and absorption efficiency of P fertilizer. This study used a completely randomized factorial design consisting of two factors. The first factor was CFA that consisted of three levels of treatment, namely: A0 = 0 t ha-1 or without CFA, A1 = 40 t CFA ha-1, A2 = 80 t CFA ha-1. The second factor was P fertilizer that consisted of four levels of treatment, namely: P0 = 0 kg ha-1, P1 = 30 kg P ha-1, P2 = 60 kg P ha-1 and P3 = 90 kg P ha-1. The results of the study showed that the application of 80 t CFA ha-1 increased the pH by 13.41%, reduced exchangeable Al by 59.53% and increased exchangeable by Ca 192.66% compared to control. The combination 80 t CFA ha-1 and 90 kg P ha-1 increased available P by 986.79% compared to control. The application of 80 t CFA ha-1 resulted in the highest total plant dry weight and total P uptake. The treatment resulted in total plant dry weight of 172.96 g and total P uptake of 187.62 mg plant-1, increased 62.39% and 100.21% respectively compared to the control. The application of 90 kg P fertilizer ha-1 resulted in the highest total dry weight of maize, and total P uptake, namely 167.49 g and 174.39 mg plant-1, respectively, which means that the total plant dry weight increased by 51.00% and the total uptake P increased 69.79% compared to control. The highest seed dry weight was obtained in the combination of 80 t CFA ha-1 and 90 kg P ha-1, namely 39.33 g, an increase of 715.53% compared to the control. The combination of 40 t CFA ha-1 and 30 kg P ha-1 resulted in the highest absorption efficiency of P fertilizer, namely 30.43%. This means that in this treatment, maize can absorb 30.43% of the applied P fertilizer.

Analisis Kandungan N-Total dan pH Tanah yang ditanami Leguminosae Cover Crops (LCC) Pada Umur Tanam Serta Dosis Pengapuran Berbeda Darma, Surya; Dhonanto, Donny
Jurnal Agroekoteknologi Tropika Lembab Vol 4, No 2 (2022): Agroekoteknologi Tropika Lembab Volume 4 Nomor 2 Februari 2022
Publisher : Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35941/jatl.4.2.2022.5148.75-80

Tanaman Leguminosae merupakan suku polong-polongan yang memiliki kemampuan memfiksasi Nitrogen dari udara. Fiksasi unsur Nitrogen dari udara melibatkan hubungan antara tanaman Leguminosae dengan bakteri Rhizobium. Keberadaan bakteri Rhizobium ditandai dengan terbentuknya bintil-bintil pada akar tanaman Leguminosae. Pembentukan bintil akar terus berlangsung seiring bertambahnya umur tanaman Leguminosae, sehingga berdampak terhadap kemampuan mengikat Nitrogen dari udara. Tanaman Leguminosae tumbuh dengan baik apabila berada di lingkungan yang sesuai. Lingkungan yang sesuai umumnya dicirikan oleh ketersedian unsur hara, kondisi iklim (intensitas cahaya, temperatur, air, panjang hari) dan tingkat kemasaman tanah (pH) yang terpenuhi. Kondisi pH tanah yang sesuai dapat dicapai melalui pemberian kapur. Penelitian ini dilakukan untuk mengetahui apakah umur tanam serta dosis pengapuran yang berbeda berpengaruh terhadap jumlah kandungan Nitrogen Total tanah dan tingkat kemasaman (pH) pada tanah. Penelitian ini meliputi dua lokasi yaitu di Kelurahan Bantuas dan Fakultas Pertanian dari pada bulan September 2019 – Januari 2020. Percobaan faktorial dalam Rancangan Acak Lengkap dengan sembilan kali perlakuan dan empat kali ulangan digunakan dalam penelitian ini. Data yang diperoleh dianalisis menggunakan sidik ragam (ANOVA) dan diuji lanjut menggunakan uji Duncan’s Multiple Range Tests (DMRT) pada taraf 5%. Penelitian ini menunjukkan bahwa umur tanam dan dosis pengapuran berberda berpengaruh terhadap jumlah kandungan Nitrogen Total tanah dan tingkat kemasaman (pH) tanah. Perlakuan dengan formulasi umur tanam 60 hari dan dosis pengapuran 68 g merupakan perlakuan terbaik terhadap tingkat kemasaman tanah (pH). Umur tanam 30 hari dengan dosis pengapuran sebanyak 34 g merupakan perlakuan terbaik terhadap jmlah Nitrogen Total tanah.

PENGARUH KEPEMIMPINAN TRANSFORMASIONAL, MOTIVASI DAN BUDAYA KERJA TERHADAP KINERJA PEGAWAI BADAN PENYELENGGARA JAMINAN SOSIAL (BPJS) KESEHATAN CABANG LANGSA Darma, Surya
JEKKP (Jurnal Ekonomi, Keuangan dan Kebijakan Publik) Vol 2, No 1 (2020): Juli
Publisher : Universitas Islam Sumatera Utara

In an increasingly complex and ever-changing business environment, the study of leadership can no longer be as simple as using these two dimensions. Likewise, efforts to find the best leadership style that applies throughout time will be in vain. There is a need to find a leadership model that is more relevant to complex situations like today. Transformational leadership is one of the "breakthrough" concepts that has revived the passion of leadership studies that have almost died over the past decade. Motivation can also be interpreted as providing a driving force that creates the excitement of one's work to be willing to work together, work effectively and be integrated with all their efforts to achieve satisfaction. From the results of the identification of the problems above, the problem can be formulated as follows: How is the influence of Transformational Leadership on the Performance of BPJS Health Officers in Langsa Branch. As for the Results of this Research Performance = 24,007 C +, 195 X1 +, 016 X2 +, 214 X3 explanation can be described as follows: Constant value of 24.007 means that if the overall value of the variable (SinismeX1, Emotional IntelligenceX2, Work StressX3) rises by 1a respectively, the Performance value (Y) will rise to 24.007. Cynic coefficient value of 0.195 means that if the value of Cynicism increases by 1a, the performance value will also increase by 0.195. Positive coefficient value means that Cynicism has a positive influence on performance. The value of the Emotional Intelligence coefficient of 0.016 means that if the value of Emotional Intelligence rises by 1a, the performance value will also increase by 0.016. A positive coefficient value means that Emotional Intelligence has a positive influence on Performance. The value of the Job Stress coefficient of 0.214 means that if the value of Job Stress rises by 1a, the performance value will also increase by 0.214. A positive coefficient value gives the meaning that Job Stress gives a positive influence on Performance.

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