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Suryana Suryana
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Effect of Soil Tillage Systems and Boiler Ash Application on the Growth and Yield of Sugarcane (Saccharum officinarum L.) Suryana, Suryana; Zuliati, Septiarini; Sukmawati, Riska; Fadillah, Resti
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v25i3.9751

Abstract

Soil tillage and the application of organic materials such as boiler ash play a crucial role in improving soil fertility and crop productivity. This study aimed to evaluate the effects of different tillage systems and boiler ash application on the growth and yield of sugarcane (Saccharum officinarum). The experiment was arranged in a randomized complete block design (RCBD) with five treatments and three replications, involving tillage variations (plowing, harrowing, subsoiling) and 40 tons ha⁻¹ of boiler ash. Data were analyzed using the LSD test at a 5% significance level. The results showed that treatment P5 produced the best growth performance, with a plant height of 2.85 cm, stem diameter of 2.33 cm, and 15 tillers at 9 weeks after planting. This treatment also achieved the highest yield of 122.79 tons ha⁻¹, with a 7.18% increase in productivity. Positive correlations were observed between yield and plant height (R² = 0.4593) as well as stem diameter (R² = 0.793). These findings suggest that the appropriate combination of tillage techniques and boiler ash application has the potential to sustainably enhance sugarcane productivity.
Implementation of solar cell booster to prevent damage to the electrical system and overcome CA N'T-Start Problems on PC2000-8 Units at PT PPA Jobsite Borneo Indobara Margono, Margono; Suryana, Suryana; Sugiyanto, Sugiyanto; Putra, Arly Fiesnanda Baven
Gema Wiralodra Vol. 15 No. 1 (2024): Gema Wiralodra
Publisher : Universitas Wiralodra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31943/gw.v15i1.679

Abstract

One of the critical problems that disrupted production achievement at the Putra Perkasa Abadi (PPA) Jobsite Borneo Indobara (BIB) mine was the breakdown of the unscheduled electrical system engine can't start on the PC2000-8 unit due to low battery voltage. The problem is behind the modification or improvement in the battery charging system of the PC2000-8 unit by adding components in the form of solar cells that function as backup supplies of electrical energy or battery boosters on the main battery of the unit. In this study, there is a novelty term, namely "One Way Charge" which means that if the voltage of the unit's main battery is less than the stadium (PC2000-8 engine start voltage drop limit: 22 Volts), automatically electrical energy from the solar cell battery booster will be channeled to the unit's main battery to help meet voltage needs. The implementation shows that these improvements effectively reduce and prevent the frequency and downtime of unscheduled electrical system engine breakdowns that can't start on PC2000-8. Another benefit of this improvement is that it can eliminate potential lost costs both in terms of production and rental rates due to these problems and support the achievement of the Sustainable Development Goals (SDGs) of Clean and Affordable Energy through the use of renewable energy.
EFFECT OF ATTENDANCE LEVEL AND WORK MOTIVATION ON EMPLOYEE WORK PRODUCTIVITY AT PT. ADI ACTIVE MAP MIGHTY FIELD Andri Ekawati, Yuni; Suryana, Suryana
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 1 No. 7 (2022): JUNE
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijset.v1i7.37

Abstract

This study aims to determine whether there is an effect of attendance and work motivation on employee productivity at PT. Adi Perkasa Medan's Active MAP and how much influence it has. The method used in this study is a quantitative method with several tests, namely reliability analysis , classical assumption deviation test and linear regression . Based on the results of the primary data regression which was processed using SPSS 18, the following multiple linear regression equation was obtained: Y = 13.937 + 0.584 X 1 +0.722 X 2. Partially, the attendance level variable (X 1 ) has a positive and significant effect on the work productivity of PT. MAP Active Adi Perkasa Medan . This means that the hypothesis in this study is accepted, as evidenced by the value of t count < t table (4.682 > 1.691). While the work motivation variable (X 2 ) has a positive and significant influence on the work productivity of PT. MAP Active Adi Perkasa Medan . This means that the hypothesis in this study is accepted, as evidenced by the value of t count > t table (4.017 > 1.691). Simultaneously, the variables of attendance (X1 ) and work motivation (X2 ) have a positive and significant influence on the work productivity of PT. MAP Active Adi Perkasa Medan . This means that the hypothesis in this study is accepted, as evidenced by the calculated F value > F table (17,392 > 3,26 ) . Variables of attendance level (X1 ) and work motivation (X2 ) were able to contribute to the influence of the employee productivity variable by 50.6% while the remaining 49.4% was influenced by other variables not examined in this study. From the conclusions above, the authors suggest that in terms of attendance levels, employees are no longer lazy to come to work and do absenteeism without explanation so that employee productivity does not decrease. The work motivation given by the leadership is very necessary so that employees can work with enthusiasm. Employees should work well according to procedures and regulations so that company leaders are satisfied.
The Importance of Perceived Organizational Support and Work From Home to increase Work-Life Balance During The Covid-19 Pandemic Putri, Amanda; Amran, Ali; Suparwo, Adi; Kurniawan, Adang; Rahayu, Yayu Sri; Suryana, Suryana
Asia Pacific Journal of Management and Education (APJME) Vol 4, No 3 (2021): November 2021
Publisher : AIBPM Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32535/apjme.v4i3.1262

Abstract

This research’s purpose is to determine the impact of perceived organizational support and work from home on the work-life balance of employees during the COVID-19 pandemic. The research method used was the survey method. It took 30 respondents as samples from Gramedia TSM – Bandung by using a non-probability sampling method with a saturated sampling technique. A descriptive and verificative survey was the research type used in this study. The data were processed with multiple regression analyses. The research result showed that perceived organizational support, work from home, and work-life balance are on a good level. The hypothesis testing showed that work from home has a positive and significant effect on work-life balance partially. Perceived organizational support has also a significant and positive effect on work-life balance. Both of them, work from home and perceived organizational support affect work-life balance simultaneously. This study concluded that perceived organizational support and work from home were two significant predictors to construct work-life balance. This information is useful for the company in evaluating the work-life balance of employees through the implementation of work from home and perceived organizational support.
HUBUNGAN RIWAYAT PENYAKIT DENGAN STATUS GIZI : STUDI CROSS SECTIONAL Nur, Zuhra Tun; Suryana, Suryana; Yunianto, Andi Eka
JURNAL RISET GIZI Vol. 9 No. 1 (2021): Mei (2021)
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jrg.v9i1.6755

Abstract

Background: Children who often suffered from diseases will affect their nutritional status.Purpose: To determine the risk factors of disease history with nutritional status among stunted children under-five in Pidie Jaya Regency.Methods: A descriptive-analytic study with a cross-sectional design. Total sample were 34 children. Weaning initiation patterns and disease history were obtained through interviews with questionnaire. The nutritional status among children under five were measured by anthropometric. Data were analyzed using chi-square test.Results: Children's disease history in the last three months were correlated with the nutritional status on the HAZ index (P-value = <0.015 (<0.05) with OR = 6.0. There was no correlation betweeen disease history with the nutritional status by WAZ and WHZ index (P-value> 0.05).Conclusion: The history of the disease in the last 3 months has a significant relationship with HAZ of children under five.
Analisis Implementasi Penyusunan Laporan Keuangan Koperasi Syari’ah Berbasis Masjid Ikram, Syafrizal; Suryana, Suryana; Ali, Muhammad; Agustina, Ingrid Larasati; Apriliana, Tria; Hadi, Dudi Abdul
MONETER - JURNAL AKUNTANSI DAN KEUANGAN Vol 11, No 1 (2024): April 2024
Publisher : Universitas Bina Sarana Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31294/moneter.v11i1.18073

Abstract

Penelitian ini bertujuan untuk menganalisis implementasi penyusunan laporan keuangan pada koperasi syariah. problematika ekonomi saat ini yaitu kemiskinan, keterbelakangan, pengangguran, kesenjangan dan menjamurnya pelaku rentenir. MUI kota Bandung mendukung masyarakat mendirikan koperasi syariah sebagai solusi penguatan ekonomi masyarakat. Prinsip koperasi syariah dalam kegiatan usahanya harus halal, baik, bermanfaat bagi umat, serta tidak boleh mengandung unsur maysir, gharar dan riba. Objek penelitian adalah penyusunan laporan keuangan dengan survey pada koperasi syariah berbasis masjid di kota Bandung. Metode penelitian adalah deskriptif analisis, data yang digunakan yaitu data kualitatif yang disajikan dalam bentuk tulisan yang berasal dari data primer hasil observasi langsung, wawancara mendalam dan data sekunder. Hasil penelitian bahwa dalam praktik penyusunan laporan keuangannya Sebagian koperasi hanya mencatat transaksi kedalam buku penerimaan dan pengeluaran dan belum memiliki laporan keuangan. lainnya proses penyusunan laporan keuangan belum memenuhi kaidah perlakuan akuntansi yang baik, dan hanya berdasarkan kelaziman atau asumsi yang dimiliki para pengurus. Dan pemahaman tentang akuntansi, pengurus koperasi hanya sebatas tahu dan belum paham menyusun laporan keuangan sesuai dengan kaidal perlakuan akuntansi.
THE EFFECT OF PHYSICAL RESILIENCE ON THE PERFORMANCE OF TRANSFERABLE LABOR (TKAD) DRIVERS AT BANK SUMUT MEDAN CENTER OFFICE Andri Ekawati, Yuni; Suryana, Suryana
International Journal of Educational Review, Law And Social Sciences (IJERLAS) Vol. 2 No. 3 (2022): May
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54443/ijerlas.v2i3.248

Abstract

This study aims to determine how much influence physical endurance has on the performance of Driver Outsourced Workers (TKAD) at PT. Bank Sumut Medan Head Office. The method used in this study is a quantitative method with several tests, namely reliability analysis , classical assumption deviation test and linear regression . Based on the results of the primary data regression which was processed using SPSS 18, the following multiple linear regression equation was obtained: Y = 0.934 + 0.020 + 0.991 + e . Partially, the general endurance variable (X1) has a positive but not significant effect on the performance of the Outsourced Workforce (TKAD) Driver PT. Bank Sumut Medan Head Office, as evidenced by the value of t count < t table (1.070 > 1.687). While the muscle endurance variable (X2) has a positive and significant influence on the performance of the Outsourced Workforce (TKAD) Driver PT. Bank Sumut Medan Head Office, as evidenced by the value of t count > t table (58,528 > 1,687). Simultaneously, the general endurance variable (X1) and muscle endurance (X2) have a positive and significant effect on the performance of the Outsourced Workforce (TKAD) Driver PT. Bank Sumut Medan Head Office. This means that the hypothesis in this study is accepted, as evidenced by the calculated F value > F table (2248 .802 > 3.25). The general endurance variable (X1) and muscle endurance (X2) were able to contribute influence on the performance variable by 99.2 % while the remaining 0.8% was influenced by other variables not examined in this study. From the conclusions above, the authors suggest that companies should pay more attention to the health of the Outsourced Workers (TKAD), especially drivers so that their health is maintained by providing health and safety guarantees by covering all hospital costs and medicines when they are sick.
HUBUNGAN RIWAYAT PENYAKIT DENGAN STATUS GIZI : STUDI CROSS SECTIONAL Nur, Zuhra Tun; Suryana, Suryana; Yunianto, Andi Eka
JURNAL RISET GIZI Vol. 9 No. 1 (2021): Mei (2021)
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jrg.v9i1.6755

Abstract

Background: Children who often suffered from diseases will affect their nutritional status.Purpose: To determine the risk factors of disease history with nutritional status among stunted children under-five in Pidie Jaya Regency.Methods: A descriptive-analytic study with a cross-sectional design. Total sample were 34 children. Weaning initiation patterns and disease history were obtained through interviews with questionnaire. The nutritional status among children under five were measured by anthropometric. Data were analyzed using chi-square test.Results: Children's disease history in the last three months were correlated with the nutritional status on the HAZ index (P-value = <0.015 (<0.05) with OR = 6.0. There was no correlation betweeen disease history with the nutritional status by WAZ and WHZ index (P-value> 0.05).Conclusion: The history of the disease in the last 3 months has a significant relationship with HAZ of children under five.
KARAKTERISTIK MEKANIK ALUMINIUM PADUAN HASIL KOMPARASI PROSES EQUAL CHANNEL ANGULAR PRESSING VS ROLLING: Severe Plastic Deformation (S.P.D) Pramono, Agus; Alhamidi , Ahmad A.; Firmansyah, Asep A.; Suryana, Suryana; Alfirano, Alfirano; Ridwan, Asep
Jurnal Rekayasa Mesin Vol. 16 No. 1 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i1.1672

Abstract

Aluminum alloys are vital in industries such as automotive, aerospace, and manufacturing due to their strength, lightweight, and corrosion resistance. To enhance their mechanical performance and energy efficiency, advanced methods like severe plastic deformation (SPD) have been explored, with equal channel angular pressing (ECAP) proving effective in refining grain structures and improving material properties. ECAP was applied to the AA5XXX series aluminum alloy using a fixed-section die with a mold groove angle of 105°  and a curve angle of 75º, while keeping the cross-sectional dimensions of the specimen constant. Route C was employed, involving a variable number of passes. Subsequently, the results of the ECAP process were further enhanced through a 50% reduction roll process. A significant increase in strength and hardness was observed when comparing the combination of ECAP and 50% rolling with ECAP alone. The mechanical properties increased by 58.11% for the first pass, 58.66% for the second pass, 58.92% for the third pass, and 59.19% for the fourth pass. Grain refinement also exhibited substantial improvement in this combined process, with increases of 68.18% for the first pass, 77.59% for the second pass, 85.71% for the third pass, and 87.38% for the fourth pass. Pure ECAP yielded a maximum strength of 251 MPa and a hardness of 78.43 HB, while the combination of ECAP with 50% rolling achieved a maximum strength of 277 MPa and a hardness of 86.17 HB. This research successfully increased tensile strength and hardness while altering the microstructure grain size morphology.
HUBUNGAN RIWAYAT PENYAKIT DENGAN STATUS GIZI : STUDI CROSS SECTIONAL Nur, Zuhra Tun; Suryana, Suryana; Yunianto, Andi Eka
JURNAL RISET GIZI Vol. 9 No. 1 (2021): Mei (2021)
Publisher : Poltekkes Kemenkes Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31983/jrg.v9i1.6755

Abstract

Background: Children who often suffered from diseases will affect their nutritional status.Purpose: To determine the risk factors of disease history with nutritional status among stunted children under-five in Pidie Jaya Regency.Methods: A descriptive-analytic study with a cross-sectional design. Total sample were 34 children. Weaning initiation patterns and disease history were obtained through interviews with questionnaire. The nutritional status among children under five were measured by anthropometric. Data were analyzed using chi-square test.Results: Children's disease history in the last three months were correlated with the nutritional status on the HAZ index (P-value = <0.015 (<0.05) with OR = 6.0. There was no correlation betweeen disease history with the nutritional status by WAZ and WHZ index (P-value> 0.05).Conclusion: The history of the disease in the last 3 months has a significant relationship with HAZ of children under five.
Co-Authors Abdillah Abdillah Abdul Aziz Ade Tutty R. Rosa Adi Suparwo Adib, Mokh Agus Abdussalam Agus Pramono Agustina, Ingrid Larasati Ahmad Syarif Alfirano Alfirano Alhamdi, Ahmad Ali Alhamidi , Ahmad A. Alhamidi, Ahmad Ali Ali Amran Alief Maulana, Alief Anwar Muhtadin, Dedi Aritonang, Torang Asep Ridwan Askolani Askolani, Askolani Asti Nur Aryanti Astri Wulandari Aziz, Abdul Bakrie, Ismail Bethani Suryawardani Biantari, Maya Preva Budhi Pamungkas Gautama, Budhi Bustami Bustami Chairul Furqon, Chairul Dedy Rahman Wijaya Dendi Gusnadi Dian Herdiana Utama , Rd. Dibias Lazuardi Maulid Didi Istardi Endang Komara Eni Sugiarti Eriana Astuty Fadillah, Resti Fanji Wijaya Fikri Mohamad Rizaldi Firmansyah, Asep A. Galang P, M. Afrizal Danar Galang P Hadi, Dudi Abdul Hanafiah Hari Mulyadi, Hari Heny Hendrayati Hetti Hidayati Husna, Fauzul Ichwan, Rusendra IdaTejawiani Ikram, Syafrizal Inayatullah, Qurat-ul-Ain Indah Uswatun Hasanah Ismail Ismail Ismail, Nawari Izzudin, Muhammad Nurul Junita, Dini Jurniarsih, Andinnie Kamarubayana, Legowo Kristiano, Rikardus Kurniawan, Adang Kusen Kusen, Kusen Kuswara, Galuh Boga Kuswara Listri Herlina Mahir Pradana Majid, Novita Marcelino, Dandy Margono Margono Maulana, Alief Ali Miftahuddin, S.Si.,MAB., asep MUHAMMAD ALI Munawar, Asep N. Nurjanah Noni Zakiah Noor, Noor Novilia, Fitri Nugraha S, Junjun Nugraha, Junjun Nunung Sri Mulyani Nur, Zuhra Tun Nurjanah, Rian Palupi Permata Rahmi Paula, Lili Perdana, Yoga Pertiwi, Netty Putri Pratminingsih, Sri Astuti Putra, Arly Fiesnanda Baven Putra, Maha Putra, Muryadi Putri, Amalia Rizkia putri, amanda Rahmiati, Mia Siti Resa, Resa Tifeni Az-Zahra Rofi Rofaida Rosyanne Kushargina Ruslani, Edi Saputra, Yori Andes Sastri Sastri Sendi Gusnandar Arnan Silvia Wagustina, Silvia Siska Komala Sari Siswahyudianto Siti Nurhayati Sugiyanto - Sujarwo Sujarwo Sukmawati, Riska Sumarto Sumarto Sutisna, Junjun Nugraha Suwatno Suwatno Taufik, Candra Tirkaamiana, Muhammad Taufan Tri Partuti Tria Apriliana, Tria Wingkolatin, Wingkolatin Yanti, Novi Dwi Yayu Sri Rahayu, Yayu Sri Yudih, Dadang Yuni Andri Ekawati Yunianto, Andi Eka Zikri Azham, Zikri Zuhdi Yahya, Zuhdi Zulaida, Yeni Muriani Zuliati, Septiarini