PERBANDINGAN KUAT TEKAN DAN LENTUR BETON MENGGUNAKAN AGREGAT KABUPATEN KUTAI BARAT TERHADAP AGREGAT PALU

Kebutuhan agregat untuk material beton di Kalimantan Timur sebagian besar berasal dari luar daerah, salah satunya dari daerah Palu. Sedangkan masyarakat di Kabupaten Kutai Barat seringkali memanfaatkan material lokal sebagai bahan beton yaitu, agregat kasar dari daerah Muara asa dan agregat halus dari daerah Keay. dikarenakan ketersediaan material tersebut masih banyak. Oleh karena perlu dilakukan penelitian tentang pemanfaatan material lokal yang ada di daerah Kalimantan Timur saat ini. Penelitian ini bertujuan untuk mengetahui kuat tekan beton dengan membandingkan penggunaan material daerah Palu dengan material kombinasi daerah Kutai Barat. Benda uji yang berbentuk silinder beton dengan ukuran 10 cm x 20 cm dan kuat lentur beton yang digunakan berbentuk balok dengan ukuran 60 cm x 15 cm x 15 cm. Pembuatan mix design  menggunakan metode SNI serta umur beton 7 hari dan 28 hari. Hasil penelitian menunjukkan bahwa kuat tekan variasi Palu dan Palu mendapatkan hasil optimum yaitu 16,04 MPa (7 hari) dan 20,7 MPa (28 hari). Dan kuat lentur beton mendapatkan hasil optimum pada variasi Muara Asa dan Keay 3,62 MPa (28 hari). Kata kunci : Material Lokal, Kuat Tekan Beton, Kuat Lentur BetonCOMPARISON OF CONCRETE COMPRESSSIVE AND FLEXIBLE STRENGTH USING AGGREGATE IN WEST KUTAI TOWARD PALU AGGREGATEThe aggregate demand for concrete materials in East Kalimantan mostly comes from outside the region, one of which is from the Palu area. Meanwhile, people in West Kutai Regency often use local materials as concrete materials, namely, coarse aggregate from the Muara Asa area and fine aggregate from the Keay area. Due to the availability of the material is still a lot. Therefore, it is necessary to conduct research on the use of local materials in the East Kalimantan area at this time. This study aims to determine the compressive strength of concrete by comparing the use of materials from the Palu area with a combination of materials from the West Kutai area. The test object is in the form of a concrete cylinder with a size of 10 cm x 20 cm and the flexural strength of the concrete used is in the form of a beam with a size of 60 cm x 15 cm x 15 cm. Making mix designs using the SNI method and the age of concrete is 7 days and 28 days. The results showed that the compressive strength of the Palu and Palu variations obtained optimum results, namely 16.04 MPa (7 days) and 20.7 MPa (28 days). And the flexural strength of the concrete got optimum results at variations of Muara Asa and Keay 3.62 MPa (28 days). Keywords: Local Material, Concrete Compressive Strength, Concrete Flexural Strengt

Pengaruh Pengalaman Kegiatan Prakerin Terhadap Kesiapan Kerja Siswa di SMK Negeri 1 Air Kumbang

Sekolah Menengah Kejuruan Profesional merupakan jenjang pelatihan pilihan yang diharapkan dapat menciptakan angkatan kerja tingkat pusat serta bertanggung jawab dalam menata, meningkatkan kemampuan anggota agar dapat menciptakan tenaga kerja yang berkualitas. Penelitian ini bertujuan mengetahui pengaruh pengalaman kegiatan prakerin terhadap kesiapan kerja siswa di SMK Negeri 1 Air Kumbang. Metode penelitian yang digunakan adalah deskriptif kuantitatif. Teknik pengumpulan data yang digunakan yaitu   dokumentasi, angket/kuesioner. Sampel dalam penelitia mengunakan teknik simple random sampling sebanyak 70 siswa kelas XI SMK Negeri 1 Air Kumbang. Berdasarkan hasil penelitian bahwa antara praktik kerja industri mempunyai kategori sangat baik (83%)  dengan kesiapan kerja siswa mempunyai kategori sangat baik (87%)  memiliki pengaruh yang positif dan signifikan. Hal ini dapat dilihat dari hasil analisis uji regresi linier sederhana hasil koefesien determinasi maka ada pengaruh pengalaman kegiatan prakerin terhadap kesiapan kerja siswa yaitu sebesar 70% kemudian hasil uji t menunjukkan ada pengaruh pengalaman kegiatan prakerin terhadap kesiapan kerja siswa di SMK Negeri 1 Air Kumban

Service Quality dan Implikasinya terhadap Kepuasan Pelanggan

The high level of society mobility needs to be supported by adequate infrastructures. Sufficient and adequate toll road infrastructure is able to increase the acceleration of a country's economic and social development through the creation of effectiveness and resulting efficiency. Optimal service delivery can gain customer satisfaction. One approach to measure service quality that many used as a reference is SERVQUAL (Service Quality). There are five dimension on servqual model, that is reliability, assurance, tangible, emphaty and responsiveness. The purpose of this study is to determine the level of customer satisfaction in order to improve the quality of service and to know the service attributes that are prioritized to be maintained and improved by PT Jasa Marga (Persero) Branch Purbaleunyi. Data processing methods in this study using the validity, reliability, classical assumption test, and descriptive statistical analysis. While the data analysis methods used are simple linear regression analysis, correlation, coefficient of determination and quadrant analysis. The results of this study indicate that service quality variables have positive and significant impact on customer satisfaction at Purbaleunyi toll road. Tingginya mobilitas masyarakat perlu didukung oleh infrastruktur yang memadai. Infrastruktur jalan tol yang memadai mampu meningkatkan percepatan pembangunan ekonomi dan sosial suatu negara melalui penciptaan efektivitas dan efisiensi yang dihasilkan. Penyampaian layanan yang optimal bisa mendapatkan kepuasan pelanggan. Salah satu pendekatan untuk mengukur kualitas layanan yang banyak digunakan adalah SERVQUAL (service quality). Ada lima dimensi model SERVQUAL, yaitu reliability, assurance, tangible, emphaty dan responsiveness. Tujuan penelitian ini adalah mengetahui tingkat kepuasan pelanggan dalam rangka meningkatkan kualitas pelayanan dan mengetahui atribut layanan yang diprioritaskan untuk dipelihara dan diperbaiki oleh PT Jasa Marga (Persero) Cabang Purbaleunyi. Metode pengolahan data menggunakan uji validitas, reliabilitas, uji asumsi klasik, dan analisis statistik deskriptif. Sedangkan metode analisis data yang digunakan adalah analisis regresi linier sederhana, korelasi, koefisien determinasi dan analisis kuadran. Hasil penelitian ini menunjukkan bahwa variabel kualitas pelayanan berpengaruh positif dan signifikan terhadap kepuasan pelanggan pada jalan tol Purbaleunyi

Corporate Rescue Strategy for PT. BN Through Leveraged Buyout and Product Diversification

A high humidity level in Indonesia makes rust or corrosion occurs easily. Rust or corrosion on building construction materials may result in disadvantages both financially and security. Therefore, it appeared iron and steel constructions tool that is coated by zinc and alumunium or galvanized, it aims to extend the life of iron and steel construction. The problem faced by PT BN, as one of the coated steel companies is the running capacity which only reaches 30%. This makes the company must be strive to remain viable. PT BN is in the danger zone when carried an analysis of the company health conditions using the Altman Z Score, and threatened with bankruptcy. The company owners can not afford to sustain the company and facing the choice of whether the company will be liquidated, sold its assets, or sold to another party. After conducted the sell company to the management alternative, the profit is much greater for the owners than two others alternative. After buying PT BN through LBO, the new owner will develop the company by producing galvalum with longer age resistance than galvanized. Financial analysis conducted to determine the feasibility of the proposed investment by looking NPV, Payback Period, IRR and ROI. The results showed a feasible value. Scenario analysis, optimistic, most likely, and pessimistic conducted and the results optimistic and most likely scenarios generated a feasible value. Therefore, PT BN chose to sell the company to the management

Pengaruh Pemberian Jahe Merah (Zingiber Officinale Var Rubrum) Terhadap Kadar Kolesterol Total Wanita Dislipidemia

Latar Belakang : Dislipidemia merupakan gangguan metabolisme lipoprotein yang salah satunya ditandai dengan peningkatan kadar kolesterol total yang dapat menyebabkan terjadinya aterosklerosis. Jahe merah mengandung flavonoid dan polifenol memiliki efek hipokolesterol dapat menekan aktivitas enzim HMG-KoA reduktase sehingga dapat mengurangi biosintesis kolesterol total. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian jahe merah terhadap kadar kolesterol total wanita dislipidemia.Metode : Jenis penelitian ini adalah true experimental dengan rancangan control group pre test – post test. Subjek adalah wanita usia 30-50 tahun yang memiliki kadar kolesterol total sebesar 200–249 mg/dl. Kelompok dibagi menjadi kelompok kontrol dan perlakuan dengan 15 subjek tiap kelompok. Kelompok perlakuan diberikan minuman jahe merah sebanyak 3,2 ml/kg BB per hari dan kelompok kontrol diberikan sirup rendah kalori 25 ml dengan penambahan air 200 ml selama 21 hari. Kadar kolesterol total dianalisis dengan metode Cholesterol Oxidase Phenol Aminoantipyrin (CHOD-PAP). Uji normalitas data menggunakan Saphiro-wilk. Analisis statistik menggunakan dependent t-test, independent t-test , Mann Whitney dan uji Pearson.Hasil : minuman jahe merah sebanyak 3,2 ml/kg BB per hari selama 21 hari dapat menurunkan kadar kolesterol total dari 226,0 ± 14,19 mg/dl menjadi 206,46 ± 15,15 mg/dl (p=0.00). Sedangkan kelompok kontrol terdapat kenaikan kolesterol total dari 223,2 ± 12,27 menjadi 235,13 ± 29,43 (p=0.09).Simpulan : Pemberian minuman jahe merah sebanyak 3,2 ml/kg BB per hari selama 21 hari dapat menurunkan kadar kolesterol total secara signifikan

PERTUMBUHAN JAMUR PADA MEDIA BIJI KLUWIH DAN BIJI NANGKA SEBAGAI SUBSTITUSI MEDIA PDA

THE GROWTH OF FUNGUS IN KLUWIH AND NANGKA SEEDS MEDIA AS A SUBSTITUTION PDA MEDIA. Resti Rahmawati, A420120048, Department of Biology Education, School of Teacher Training and Education, Muhammadiyah University of Surakarta, March, XVI+32 ABSTRACT PDA is the most media to grow the fungus, but the price of this media is expensive so it need an alternative media that easy and cheap to get it. This study aims to determine the growth of Aspergillus niger in alternative kluwih and nangka seeds media. This research was an experimental study using a completely randomized design (CRD) one factor was the type of media is PDA (M0), kluwih seed media (M1), nangka seed media (M2) and using the test fungus A. niger (J1). Inoculation of A. niger used agar block method for 3 days with a temperature of 28⁰C. Parameter of research was colony diameter and sporulation of A. niger. Data were analyzed with descriptive qualitative methods. The result of this research showed that the best growth for Aspergillus niger was after 72 hours incubation, colony diameter continually in PDA media, kluwih seed media, nangka seed media is 4,7 cm, 4,3 cm, 4,1 cm with heavy sporulation. So, the conclution is that kluwih and nangka seeds media can be use as a substitution of PDA media for the growth of fungus. Keyword : kluwih and nangka seeds, Aspergillus niger, PDA

The Role of Cooperative in The Milk Value Chain in West Bandung Regency, West Java Province

The objective of the study was to evaluate the capacity of Northern Bandung Dairy Farmer Cooperative (KPSBU) to support farmers in producing good quality milk within the milk value chain in West Bandung Regency, West Java. The study used qualitative research strategies including desk study, case study, and focus group discussions. The study compared the involvement of three milk collecting actors that were classified into large cooperative (KPSBU), small cooperative (KUD Puspa Mekar), and private company (Bina Kitri Bersama). A total of 18 dairy farmers, 3 milk collecting actors, 2 milk processors, and one livestock officer were interviewed. Three focus group discussions were conducted. The large cooperative performed better in services, milk collection, and milk quality assessment compared to other milk collecting actors. Members’ commitment, inconsistent milk quality, and shortage of good quality fodder were the hindering factors that influenced the collection of good quality milk in the large cooperative. In conclusion, the large cooperative had better performance in service provision, it also had better infrastructures in milk collection and milk quality assessment compared to other milk collecting actors. Increasing the milk quality standard by milk processing companies affected the milk price since 2000.