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All Journal International Journal of Advances in Applied Sciences Jurnal Ilmu Ternak Bulletin of Electrical Engineering and Informatics Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL PETIK Legal Standing : Jurnal Ilmu Hukum Ta'dib: Jurnal Pendidikan Islam JURNAL ILMIAH ADVOKASI Jurnal Indonesia Sosial Teknologi Jurnal Kedokteran Hewan Jurnal Ar Ro'is Mandalika (Armada) Al-Bidayah : jurnal pendidikan dasar Islam Jurnal Standardisasi
Kurnia, Asep
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Veterinary Other

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SPENT BLEACHING EARTH-BIOPROCESS (SBE) CHARACTERISTICS AGAINST INDONESIAN NATIONAL REGULATION FOR TOXIC-HAZARD WASTE AND SOIL AMENDMENT Kurnia, Asep; Harsanti, E.S.; Ardiwinata, Asep Nugraha; Sutriadi, Teddy; Yusuf, Wahida Annisa; Gunawan, Bambang
JURNAL STANDARDISASI Vol 26, No 1 (2024)
Publisher : Badan Standardisasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31153/js.v26i1.1008

Abstract

Currently, the palm oil industry disposes the Spent Bleaching Earth (SBE) to the land-field without a proper treatment process. Some peoples argue that the SBE still in high oil content and will pose an environmental problem due to hazardous content and it will easily catch fires. One possible solutions is optimizing SBE for land restoration, which could also be enhancing livelihood and reducing pollution. This paper identifies the SBE-bioprocess according to the Indonesian National Regulation for toxic-hazard waste and soil rehabilitation. SBE-bioprocess testing was conducted as toxic-hazard waste both on TCLP organic and anorganic form also as a soil amendment criteria both certain function and organic. Research shows that the SBE-bioprocess could not be categorized as toxic-hazard waste due to very low value of toxic and hazard compounds. Additional C-organic is important before using it as an organic soil amendments. Lab test shows that SBE-bioprocess is high value of CEC, then could be developed for specific function of soil amendments.
PRODUCTIVITY AND FRESH SEMEN CHARACTERISTICS OF SIMMENTAL BULL DIFFERENT AGES Satrio, Faisal Amri; Karja, Ni Wayan Kurniani; Setiadi, Mohamad Agus; Kaiin, Ekayanti Mulyawati; Kurnia, Asep; Purwantara, Bambang
Jurnal Kedokteran Hewan Vol 16, No 1 (2022): March
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v16i1.23487

Abstract

This study aimed to determine the effect of age on bulls productivity and fresh semen characteristics of Simmental bull in Indonesia. A total of 1071 data of semen collection and production from four age groups (two years old (yo), four yo, 10 yo with high semen rejection (10 HR), and 10 yo with low semen rejection (10 LR) were used in this study to evaluate the productivity and characteristics of fresh semen. The results showed that the pre-freezing and post-freezing semen rejection rate of 10 HR group was higher (P0.05) than the other groups. The four yo group had the percentage of second semen ejaculation each collection was higher (P0.05) than the other groups. Furthermore, semen volume, sperm concentration, and total sperm concentration significantly increased (P0.05) until four yo and then decreased (P0.05) in 10 yo groups. The 10 HR group had the volume and total sperm concentration significantly different (P0.05) with a group of 10 LR. Total sperm motility, individual motility, and mass movement were lower (P0.05) in 10 HR than the other groups. In conclusion, age differences of bulls can affect the productivity and characteristics of fresh semen.
PERLINDUNGAN HUKUM BAGI PEKERJA ALIHDAYA DENGAN UPAH DIBAWAH KETENTUAN: TINJAUAN TEORI KEPASTIAN HUKUM Kurnia, Asep
Legal Standing : Jurnal Ilmu Hukum Vol. 8 No. 1 (2024): Januari-April
Publisher : Universitas Muhammadiyah Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24269/ls.v8i1.7961

Abstract

Outsourcing is to respond to global economic developments and the speed of technological development so that global competition is very tight. The logical consequence of this condition is the decision by company leaders or management to hand over or outsource some of the company's processes to other parties. The aim of this research is the implementation of Law Number 11 of 2020 concerning Job Creation in relation to providing protection for outsourcing workers. This type of research is qualitative, with a normative legal research approach. The results of the discussion obtained the answer that legal protection for outsourced workers is viewed from the principle of legal certainty in Law Number 13 of 2003 and Law Number 11 of 2020 on Job Creation concerning Employment which can be seen in two forms, namely legal certainty in preventive protection and legal certainty in repressive protection. Legal certainty in the context of preventive protection covers several aspects, including clarity regarding employment relations, time-limited work agreements (PKWT), social security, wage levels and wage compensation. In the context of outsourcing, there are no longer any restrictions on the types of work that can be outsourced. For this reason, regulations are needed that provide further detail regarding legal certainty in preventive and repressive protection, to ensure more comprehensive protection.
Analysis of the Influence of Adhesive, Geometry, and Manufacturing Processes on Mixed Mode Stress Ratio in Single Lap Shear Adhesive Joint Structures of Aluminum and Composite Plates Kurnia, Asep; Hadi, Bambang Kismono; Syamsudin, Hendri; Suada, Muhamad Giri
Jurnal Penelitian Pendidikan IPA Vol 10 No 11 (2024): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i11.9107

Abstract

In aircraft structures, composite plate joints often present significant challenges. Mechanical fastenings such as pins, bolts, or rivets require holes to be drilled in the plates, which reduces the strength of the laminate due to stress concentrations around the hole edges. These joints frequently become sources of structural failure in aircraft. Therefore, the design of composite plate joints is crucial to maintain structural integrity. Adhesive joints offer several advantages over mechanical joints, including the ability to join two different materials, more uniform stress distribution along the joint, and reduced weight since no bolts or rivets are needed. The most common adhesive joint design is the Single Lap Joint (SLJ), which is popular due to its simple geometry and high structural efficiency. However, the main drawback of the SLJ is load eccentricity, which leads to secondary bending and undesirable normal stresses along the adhesive edges. The hypothesis of this study is that SLJ conditions with optimal shear strength can be achieved through the right combination of adhesive type, bond surface preparation, and joint configuration. This study analyzes the influence of various adhesive materials, joint designs, and manufacturing methods using numerical modeling methods, validated with analytical approaches and ASTM standard testing. Numerical modeling is conducted using the finite element method with a cohesive zone model (CZM) approach to examine stress distribution in various cases, such as the impact of geometry, adhesive thickness, and joint length. The normal and shear stress distribution along the joint is found to significantly affect the strength of the SLJ, highlighting the importance of careful design and material selection in these applications.
Co-Authors Alam, Sirojul Ardiwinata, Asep Nugraha Arifin, Bambang Samsul Assiroj, Priati Bambang Gunawan Bambang Purwantara Budianto, Tri Dedi Dedi Faisal Amri Satrio Hadi, Bambang Kismono Hamdani Hamdani Harahap, Ery Harsanti, E.S. Heni Indrijani Isnan, May Kaiin, Ekayanti Mulyawati Kemalsyah, Kemalsyah Kustiawan, Bambang Kusuma, Gilang Cempaka M Agus Setiadi Ni Wayan Kurniani Karja Putra, Andhika Raden Mohamad Herdian Bhakti Rafi, Hanif Muzhaffar Ruswandi, Uus Sahabuddin, Munawir Santoso, Imam Budi Singadimeja, Holynes Siti Darodjah, Siti Suada, Muhamad Giri Sudasri, Imam Sutriadi, Teddy Syamsudin, Hendri Wigiyanti, Ema Trie Yusa, Yusa Yusuf, Wahida Annisa