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All Journal Jurnal Penelitian Humaniora Jambura Journal of Tropical Livestock Science Prosiding SNTTM
Eko Mulyono, Eko
UMS Solo
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Engineering Industrial & Manufacturing Engineering

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ERRORS IN NARRATIVE TEXT COMMITTED BY STUDENTS OF GRADE XI OF VOCATIONAL HIGH SCHOOL STATE 4 SURAKARTA ACADEMIC YEAR 2014/2015 Mulyono, Eko
Jurnal Penelitian Humaniora Vol 18, No 2: Agustus 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/humaniora.v18i2.5189

Abstract

This study aimes to identify the types of errors in the students writing, to know the frequencies of each type of errors, and to investigate the causes of errors. There are three types of errors occured in the students writing namely lexical error, syntactical error, and discourse error. The errors can be categorized into twenty four subcategories of errors: wrong spelling words (10,35%), wrong selection words (15,53%), omission verb (0,74%), omission v-ing after preposition for (0,55%), addition unnecessary verb (0,74%), using simple present tense refers to simple past (22,37%), use simple future instead of past future (2,40%), using irregular past verb tense after to infinitive (2,40%), addition final ed after to infinitive (1,85%), addition v-ing after to infinitive (1,11%), addition double marking verb (1,66%), omission to be (11,65%), addition to be (1,29%), omission s/es in the use of plural noun (2,40%), addition s in singular noun (1,29%), omission article (6,47%), addition unnecessary article (1,66%), wrong article (1,11%), wrong subject pronoun (2,03%), wrong object pronoun (0,55%), wrong possessive pronoun (2,03%), generic structure (2,96%), reference (2,03%), wrong selection conjunction (4,81%). The most dominant error is in syntactical error i.e. using simple present tense refers to simple past with the percentage 22,37%. Those errors are caused by four aspects, they are overgeneralization, incomplete application of rules, ignorance of rule restrictions, and false concept hypothesized.
KANDUNGAN SELULOSA, HEMISELULOSA DAN LIGNIN PAKAN KOMPLIT SAPI POTONG DENGAN SUPLEMENTASI DAUN KELOR (Moringa oleifera) Mulyono, Eko; Mukhtar, Muhammad; Gubali, Syukri I.; Bahri, Syamsul
Jambura Journal of Tropical Livestock Science Vol 3, No 1 (2025)
Publisher : Universitas Negeri Gorontalo

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Penelitian ini bertujuan untuk mengetahui kandungan selulosa, hemiselulosa dan lignin silase ransum komplit yang disuplementasi daun kelor.Penelitian ini dirancang berdasarkan Rancangan Acak Kelompok (RAK) dengan empat perlakuan dan tiga ulangan. Perlakuan terdiri dari: R0 = jerami jagung75% + konsentrat 25%,R1 = jerami jagung70% + konsentrat 25% + daun kelor 5%,R2 = jerami jagung65% + konsentrat 25% + daun kelor 10%, R3 = jerami jagung60% + konsentrat 25% + daun kelor 15%. Parameter yang diukur adalah kandungan selulosa, hemiselulosa, dan lignin silase ransum komplit. Hasil penelitian menunjukkan bahwa perlakuan suplementasidaun kelor sampai dengan taraf 15% tidak dapatmemberikan pengaruh nyata (P>0,05) terhadap kandungan selulosa, hemiselulosa dan lignin. Dapat disimpulkan bahwa suplementasi daun kelor dalam pakan komplitsampai denngan taraf 15% tidak dapat meningkatkan kandungan selulosa, hemiselulosa dan lignin. Kata Kunci: Pakan Komplit; Selulosa; Hemiselulosa dan Lignin, daun kelor
Sistem pendingin gedung 15.5 MWh dengan ice slurry CTES dan solar PV Pamitran, Agus Sunjarianto; Azis, Rizqi Rizaldi; Mulyono, Eko; Yatim, Ardiyansyah; Lubis, Arnas
Prosiding SNTTM Vol 23 No 1 (2025): SNTTM XXIII October 2025
Publisher : BKS-TM Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71452/jq6wjj06

Abstract

Given the increasing concerns about the environmental impact of fossil fuel-based electricity sources, effective efforts are needed to encourage the use of green energy to meet electricity needs, especially for buildings. Air conditioning systems generally contribute the largest electricity consumption in commercial buildings, so planning an energy conservation system is very important. This study designs a building air conditioning system that uses solar power plants (PLTS) as a power source, by applying the principles of district cooling and cold thermal energy storage (CTS) with ice slurry to optimize the performance of the cooling system. With a case study in a building in Jakarta, Indonesia, this study aims to determine the capacity of the PV system and CTES that can reduce energy consumption and emissions, while considering the costs involved. This study shows 3 CTES charging schemes. In this study, a comparison of several CTES charging schemes shows that the charging scheme using a hybrid power supply is the most cost-efficient option, followed by the off-grid scheme, while the conventional system is the most expensive due to the high cost of electricity. Overall, the CTES system with ice slurry is not only a technological innovation, but also a strategic step towards a more environmentally friendly and energy-efficient building system, where energy needs are balanced with the principle of long-term sustainability.
Co-Authors Arnas Lubis Azis, Rizqi Rizaldi Gubali, Syukri I. Muhammad Mukhtar Pamitran, Agus Sunjarianto Syamsul Bahri Yatim, Ardiyansyah