Perbandingan Metode Bina Marga Dan Metode Pci (Pavement Condition Index) Dalam Penilaian Kondisi Perkerasan Jalan (Studi Kasus Ruas Jalan Kaliurang, Kota Malang)

The assessment of pavement condition is needed to establish the appropriatemaintenance program. The methods that usually used to evaluate pavement condition arethe method of Bina Marga and PCI (Pavement Condition Index) method. This study aimsto assess the pavement condition of Kaliurang street with these two methods beingcompared.This study used field research in which the primary data was the result ofpavement condition survey. The priority of pavement maintenance of Bina Marga methodrated from 0 to more than 7, while the PCI rated from 0 to 100.The evaluation results of either Bina Marga or PCI method indicate that thepavement of Kaliurang street still has fair performance but needs some maintenance andrehabilitation

Cluster size distributions in gas jets for different nozzle geometries

Cluster size distributions were investigated in case of different nozzle geometries in argon and xenon using Rayleigh scattering diagnostics. Different nozzle geometries result in different behaviour, therefore both spatial- and temporal cluster size distributions were studied to obtain a well-characterized cluster target. It is shown that the generally used Hagena scaling can result in a significant deviation from the observed data and the behaviour cannot be described by a single material condensation parameter. The results along with the nanoplasma model applied to the data of previous high harmonic generation experiments allow the independent measurement of cluster size and cluster density.Comment: 7 pages, 6 figure

Kajian Perbaikan Patahan Pada Runway

At the runway pavement of El Tari Kupang Airport, there was damage in the form of fracture that occurred at the edge of the pavement, which could disrupt aircraft traffic line. Due to the problem, the purposes of this research are to find out the cause of fracture, and to assess the reconstruction of the runway pavement that has been done by PT Angkasa Pura, Kupang. As the research conducted, it was found out that the cause of the fracture was more prevalent due to the lack of drainage system of the Airport. The slope of the runway shoulder was only 1.60% - 1.80%, was improper to the FAA minimum standard of slope that was 2.50% - 5.00%, and the unavailability of inlet pipes for subsurface drainage. The result of reconstruction done by PT Angkasa Pura has fulfilled the FAA standard. The total thickness of the reconstruction is 52.00 cm, is compliant with the minimum thickness of FAA standard 50.07 cm. However, the reconstruction of the pavement would be for short term solution only because of the poor drainage system of El Tari Kupang Airport has not been handled properly

Pemodelan Kecelakaan Sepeda Motor Pada Ruas Jalan Di Kota Atambua

Penelitian ini bertujuan untuk mendeskripsikan dan menganalisa faktor-faktor yang mempengaruhi kecelakaan sepeda motor di Kota Atambua melalui pemodelan. Pemodelan menggunakan metode Generalized Linear Method dengan standar signifikansi sebesar 95%. Berdasarkan hasil pengolahan data hasil survei lalulintas dan survei kendaraan menggunakan program GenStat diperoleh persamaan pemodelan kecelakaan MCA = 0.002902 exp[-0.986 LbLajur – 0.674 LbBahu Jalan + 0.1761 Kecepatan]. Hasil pemodelan menunjukan bahwa faktor-faktor yang mempengaruhi kecelakaan sepeda motor adalah Total Lebar Ruas Jalan dengan koefisien sebesar -0.986, Total Lebar Bahu Jalan dengan koefisien sebesar -0.674, dan 85-Percentile Kecepatan Kendaraan dengan koefisien sebesar 0.1761. Analisa Deskriptif menunjukan bahwa kecelakaan sepeda motor sering terjadi pada pengendara dengan jenis kelamin laki-laki dengan jumlah kasus terbanyak sebesar 40 kasus, dengan rentang usia pengendara 18-25 tahun, yaitu 17 kasus. Kecelakaan sering terjadi pada pengendara dengan profesi swasta, yaitu sebesar 17 kasus dan paling sering terjadi pada rentang waktu pukul 12.00-17.59 yaitu sebanyak 7 kasus. Dari kriteria tipe tabrakan, kecelakaan sering terjadi dengan tipe Tabrak Pejalan Kaki, yaitu terjadi sebanyak 5 kasus dengan tingkat keparahan terbanyak Luka Berat, yaitu sebanyak 14 kasus

Pengukuran Kadar Air Tanah Dengan Menggunakan Gypsum Block

Pekerjaan teknik sipil banyak dilakukan pada tanah tidak jenuh air (unsaturated). Perubahankedudukan muka air tanah akan mempengaruhi tingkat kadar air dalam tanah. Pengukuran kadarair biasanya dilakukan dalam laboratorium yang memerlukan waktu yang lama. Sebagai alternatifgypsum block dapat pakai sebagai alat sensor kadar air yang dapat mempercepat pengukuran kadarair tanah dan langsung dipakai dilapangan setelah dikalibrasi secara individu.Penelitian ini dilakukan terhadap dua jenis tanah yaitu tanah lempung (CH) dan pasir berlanau(SM) dengan volume contoh tanah yaitu menggunakan mold Standard serta USAha pemadatansampel tanah yaitu 25 pukulan per lapis. Pemberian kadar air untuk tanah lempung yaitu 10% ,15% ,20% ,30% dan 40% sedangkan pada sampel pasir berlanau, kadar air yang diberikan yaitu5% ,8% ,11%, 14% dan 17%.Hasil pengujian menunjukkan hubungan kadar air dengan resistansi gypsum block yangmenghasilkan koefisien korelasi (R2) = 0.904 pada sampel uji tanah lempung dan R2 = 0.146 padapasir lanau. Dengan demikian hasil penelitian memperlihatkan bahwa gypsum block dapatdigunakan untuk mengukur kadar air pada tanah lempung, sedangkan pada pasir berlanau,penggunaan gypsum block tidak cocok, karena tidak memberikan hasil yang baik, disebabkanoleh sifat permeabilitas pasir lanau yang besar

Penggunaan Limbah Batu Marmer Dari Gunung Batu Naitapan Kabupaten Timor Tengah Selatan

The activity of marble mining at Mount Naitapan produces wastes such as powder and marble rocks. Efforts to utilize this waste as an alternative to aggregate in concrete mix. This research aims to discover the magnitude of compressive strength if aggregates in concrete that using marble waste as replacement. Specimens used is concrete cylinders. The marble waste used in three treatments of substitution they were substitution of marble powder by sand, marble rocks by the split stone, marble powder and marble rock by sand and split stone.The percentage of each substitution is 25%, 50%, 75%, 100%. The test result showed that for concrete with the substitution of marble powder by the sand and substitution of marble powder and marble rock by sand and split stone to substitute 75% increase while the compressive strength of 100% lower compressive strength. Substitution of marble rocks by the split stone had increased compressive strength

Casein haplotype structure in five Italian goat breeds

The aim of this work was to investigate the genetic structure of the casein gene cluster in 5 Italian goat breeds and to evaluate the haplotype variability within and among populations. A total of 430 goats from Vallesana, Roccaverano, Jonica, Garganica, and Maltese breeds were genotyped at alphas1-casein (CSN1S1), alphas2-casein, (CSN1S2), beta-casein (CSN2), and kappa-casein (CSN3) loci using several genomic techniques and milk protein analysis. Casein haplotype frequencies were estimated for each breed. Principal component analysis was carried out to highlight the relationship among breeds. Allele and haplotype distributions indicated considerable differences among breeds. The haplotype CSN1S1*F- CSN1S2*F-CSN3*D occurred in all breeds with frequencies >0.100 and was the most common haplotype in the Southern breeds. A high frequency of CSN1S1*0-CSN1S2*C-CSN3*A haplotype was found in Vallesana population (0.162). Principal component analysis clearly separated the Northern and Southern breeds by the first component. The variability of the caprine casein loci and variety of resulting haplotypes should be exploited in the future using specific breeding programs aiming to preserve biodiversity and to select goat genetic lines for specific protein production