bluuebunny/crossref_metadata_2025 huggingface dataset:
ANALISIS TINGKAT PENERAPAN KONSTRUKSI HIJAU DAN FAKTOR KENDALANYA PADA PROYEK GEDUNG
Authors: Susilo Albert Nogo , Jin Oei Fuk
Published: December 2022

As an effort to overcome the negative impact of building projects by implementing green construction. Therefore, the application of green construction is very necessary in the implementation of building projects, although there are still projects that do not or do not implement green construction. The purpose of this research is to identify the factors of implementing green construction and the constraints that affect the 5 groups that have been determined with their respective categories so that a strategy can be recommended. The methods used in this research are validity test, reliability test, normality test, One Way ANOVA test between subjects and Relative Importance Index (RII) method, and SWOT analysis. The data obtained in this study were based on distributing questionnaires with purposive sampling and interview techniques. Based on the results of data analysis, it shows that the application of green construction in the 5 groups has implemented the application of green construction quite well with the majority of the constraint factor that greatly affects the implementation of green construction is the government aspect, so that a strategy is obtained such as requiring to have ISO 14000, providing costs for training, innovating, and giving appreciation.Sebagai upaya untuk mengatasi dampak negatif dari proyek gedung dengan menerapkan konstruksi hijau. Oleh karena itu, penerapan konstruksi hijau sangat diperlukan dalam pelaksanaan proyek gedung walaupun masih terdapat proyek yang tidak atau kurang menerapkan konstruksi hijau. Tujuan dari penelitian ini adalah untuk mengidentifikasi faktor penerapan konstruksi hijau dan kendalanya yang mempengaruhi pada 5 kelompok yang sudah ditentukan dengan kategori masing-masing sehingga dapat direkomendasikan suatu strategi. Metode yang digunakan dalam penelitian ini adalah uji validitas, uji reliabilitas, uji normalitas, uji One Way ANOVA Between Subject dan metode Relative Importance Index (RII), serta analisis SWOT. Data yang diperoleh dalam penelitian ini berdasarkan dari penyebaran kuesioner dengan teknik purposive sampling dan wawancara. Berdasarkan dari hasil analisis data menunjukkan bahwa penerapan konstruksi hijau pada 5 kelompok tersebutsudah melaksanakan penerapan konstruksi hijau dengan cukup baik dengan mayoritas faktor kendala yang sangat mempengaruhi dalam penerapan konstruksi hijau merupakan aspek pemerintah, sehingga diperoleh suatu strategi seperti mensyaratkan untuk memiliki ISO 14000, menyediakan biaya untuk pelatihan, melakukan inovasi, dan memberikan apresiasi
IDENTIFIKASI FAKTOR DOMINAN YANG MEMPENGARUHI PERMINTAAN EXCAVATOR PADA PROYEK GEDUNG BERTINGKAT DI MASA PANDEMI COVID-19
Authors: Latif Vinka Tania , Anondho Basuki
Published: December 2022

Negara Indonesia merupakan salah satu negara yang terkena dampak pandemi COVID-19 harus tetap melakukan  perkembangan dan meningkatkan perekonomian yang terkena dampak pandemi ini. Perkembangan yang dilakukan Indonesia salah satunya adalah melanjutkan proyek pembangunan. Alat berat sebagi faktor utama dalam pelaksanaan suatu proyek konstruksi menjadi salah satu faktor terpenting dalam pembangunan. Penggunaan atas alat berat diperlukan dalam proses mempercepat pelaksanaan pekerjaan konstruksi sesuai dengan target yang telah ditentukan. Penggunaan atas alat berat ini menimbulkan permintaan atas alat berat. Penelitian ini membahas mengenai faktor yang mempengaruhi permintaan alat berat pada proyek gedung bertingkat di masa pandemi Covid-19, tetapi karena lingkup alat berat besar maka pada penelitian akan meneliti alat berat Excavator. Excavator digunakan untuk penggalian tertutama dalam pembuatan gedung bertingkat. Pada penelitian ini menggunakan metode analisis faktor dengan tujuan mencari faktor dominan yang mempengaruhi permintaan excavator. Bedasarkan indentifikasi awal didapatkan 7 variabel yang mempengaruhi permintaan excavator lalu dari hasil analisis didapatkan satu faktor dominan baru.Indonesia as one of the countries affected by the COVID-19 pandemic must continue to develop in order to repair the economic collapse of the countries affected by this pandemic. One of the developments in Indonesia can be seen from the ongoing developments during the COVID-19 pandemic. Heavy equipment as a major factor in the implementation of a construction project is one of the most important factors in development. The use of heavy equipment is needed in the process of accelerating the implementation of construction work in accordance with predetermined targets. The use of this machine creates a demand for heavy equipment. This study discusses the factors that affect the demand for heavy equipment on high-rise building projects during the Covid-19 pandemic, but because the scope of heavy equipment is large, this study will examine excavator heavy equipment. Excavators are used for excavation, especially in the manufacture of high-rise buildings. In this study using the method of factor analysis with the aim of finding the dominant factors that affect the demand for excavators. Based on the initial identification obtained 7 variables that affect the demand for excavators then from the analysis results obtained a new dominant factor.
Analisis Daya Dukung Fondasi Dangkal Jalan Raya di Atas Tanah Clayshale
Authors: Putra Kenji Kasan , Makarim Chaidir Anwar
Published: December 2022

Tanah clayshale adalah sebuah sedimen yang berbentuk butiran halus terbentuk dari konsolidasi mineral lempung yang mempunyai karakter kembang susut yang sangat besar apabila terjadi perubahan kadar air. Merupakan hasil pelapukan atau transportasi batuan sedimentasi tipe mekanik dengan material timbunan, daya dukung fondasi, kestabilan lereng konstruksi bawah tanah dan lain sebagainya. Pada skripsi kali ini akan membahas mengenai konstruksi jalan raya di atas tanah clayshale yang ditinggikan. Untuk melindungi tanah clayshale dari degradasi kekuatan tanah, maka permukaan tanah clayshale di isolasi menggunakan slab beton, kemudian di atasnya diberikan tanah urug. Beban daripada jalan raya tersebut ditransfer di bawah langsung ke tanah clayshale bukan ke tanah urug. Tanah urug digunakan untuk mengurangi kemungkinan kenaikan air tanah sementara akibat hujan. Hasil yang didapat disajikan dan semua peraturan yang terkait digunakan seperlunya. Hasil dari analisis yang didapat dari perhitungan daya dukung fondasi sebelum degradasi NSPT sebesar 72.16 Ton. Lalu untuk daya dukung fondasi setelah degradasi NSPT sebesar 35% sebesar 52.109 Ton, 40% sebesar 49.096 Ton, 50% sebesar 44.083 Ton. Sehingga jika dibandingkan dengan beban luar sebesar 36.050 Ton, fondasi kuat menahan beban luar di atasnya. Clayshale soil is a sediment of a fine grains formed from the consolidation of clay minerals that have a very large shrinkage character when there is a change in water content. It is the result of weathering or transportation of mechanical type sedimentary rock with embankment material, foundation bearing capacity, slope stability of underground construction and so on. In this thesis, we will discuss the construction of highways on elevated clayshale soil. To protect the clayshale soil from the degradation of soil strength, the clayshale soil surface is isolated using a concrete slab, then fill soil is given on it. The load from the highway is transferred below directly to the clayshale soil rather than to the backfill. Backfill is used to reduce the possibility of temporary groundwater rise due to rain. The results obtained are presented and all relevant regulations are applied as necessary. The result of the analysis obtained from the bearing capacity of the foundation before NSPT degradation is 72.16 Tons. Then for the bearing capacity of the foundation after NSPT degradation, 35% is 52.109 tons, 40% is 49,096 tons, 50% is 44.083 tons. So when compared to the external load of 36,050 Tons, the foundation is strong enough to withstand external loads on it.
ANALISIS RIWAYAT WAKTU FONDASI TIANG TUNGGAL DAN KELOMPOK DI TANAH LUNAK
Authors: Gandarasa Albert , Wijaya Hendy , Yuwono Amelia
Published: December 2022

Indonesian territory has high earthquake possibility because it lays on two seismic gaps. Earthquake can cause a great damage for mankind, in example deaths and infrastructure damage. Therefore, interventions are needed to prevent the damages by analyzing the effect of earthquake towards the foundation stability. The most common analysis method is time history analysis. Time history analysis is a step by step method to find out the respond that given by a structure by simulating an earthquake record to the structure model. This method needs a ground motion from an accelerogram. Spectral response is also needed from the area where the infrastructure will be built. This journal will analyze the time history on the single pile and group pile. This journal will used geotechnical-based programme which is Midas GTS NX that will resulting the displacement and the internal force caused by the seismic load. This journal is expected in assist the planning of a building by calculating the earthquake effects and minimalizing the possibility of pile foundation failure. Wilayah Indonesia memiliki potensi gempa yang cukup besar karena dilewati oleh dua jalur seismik. Gempa bumi dapat mengakibatkan kerugian yang besar bagi umat manusia, seperti korban jiwa dan kerusakan infrastruktur. Maka dari itu, dibutuhkan langkah-langkah untuk mencegah hal tersebut dengan menganalisis efek gempa terhadap kestabilan fondasi. Salah satu analisis yang biasa digunakan adalah analisis riwayat waktu. Analisis riwayat waktu adalah suatu metode langkah demi langkah untuk mengetahui respons yang diberikan suatu struktur dengan cara pemberian rekaman gempa terhadap model struktur tersebut. Metode ini membutuhkan rekaman gerak tanah dari sebuah akselerogram. Diperlukan juga respon spektra dari daerah tempat dimana infrastruktur tersebut akan dibangun. Pada jurnal ini akan dilakukan analisis riwayat waktu pada tiang tunggal dan tiang kelompok. Jurnal ini menggunakan program Midas GTS NX yang berbasis geoteknik yang akan menghasilkan nilai perpindahan dan gaya dalam akibat beban gempa. Jurnal ini diharapkan dapat membantu dalam merencanakan sebuah bangunan dengan memperhitungkan pengaruh beban gempa dan meminimalisir kemungkinan terjadinya kegagalan fondasi tiang.
ANALISA NILAI FAKTOR DAKTILITAS DENGAN METODE PUSHOVER DENGAN PERKUATAN BRESING DIAGONAL TUNGGAL
Authors: Sutanto Maria Kevinia , Christianto Daniel
Published: December 2022

ABSTRACT Changes in design regulations cause differences in earthquake forces so that additional reinforcement is needed to meet earthquake-safe high-rise buildings, so they are reinforced with steel braced. Bracing can increase the stiffness and strength of the structure and improve the structure in accepting lateral loads and resisting lateral displacement without adding a large mass. Concrete and steel structures are different materials and will affect the response modification factor (R) value in the calculation of earthquake loads. In SNI 1726:2019, part of the combined moment-bearing frame system of steel and concrete, the value of R itself hasn't been explicitly regulated. Therefore, the purpose of this research is to analyze the value of the combined structural ductility factor for reinforced concrete and steel braced structures. Analysis results show that diamond braces are the best model from the tests carried out, have a ductility factor value in the X-direction, R of 5.575, 0 of 2.883, and Cd of 1,44. Meanwhile, for the Y-direction, R is 7.499, 0 is 2.118, and Cd is 1.07. Performance level based on ATC40, X-direction diamond braced is Immediate Occupancy, and Y-direction is Damage Control. Based on FEMA 356, the X-direction and the Y-direction are Immediate Occupancies. Keywords: pushover analysis, response modification factor, overstrength factor, deflection amplification factor, bracing.ABSTRAK  Perbedaan peraturan desain menyebabkan perbedaan gaya gempa diperlukan perkuatan tambahan untuk memenuhi bangunan tinggi yang aman terhadap gempa, salah satunya diperkuat dengan menambahkan bresing atau baja pengaku. Bresing dapat meningkatkan kekakuan dan kekuatan struktur membantu meningkatkan struktur dalam menerima beban lateral dan menahan simpangan lateral (menstabilkan) tanpa menambah massa yang besar. Struktur beton dan baja merupakan material yang berbeda, dan akan mempengaruhi pemilihan nilai faktor modifikasi respon (R) dalam perhitungan beban gempa. Dalam SNI 1726:2019 bagian sistem rangka pemikul momen gabungan baja dan beton, nilai R sendiri belum diatur secara eksplisit. Oleh karena itu, tujuan dalam penulisan ini adalah unutk menganalisa dan menunjau nilai faktor daktilitas struktur gabungan yaitu struktur beton bertulang dan bresing baja. Hasil analisis menunjukan bahwa diamond bresing adalah model paling baik dari uji yang dilakukan, memiliki nilai faktor daktilitas arah X yaitu R sebesar 5,575, nilai ?0 sebesar 2.883 dan nilai Cd sebesar 1,44. Sementara untuk arah Y yaitu R sebesar 7,499, nilai ?0 sebesar 2,118 dan nilai Cd adalah 1,07. Tingkat kinerja berdasarkan ATC40, diamond bresing arah X adalah Immediate Occupancy, arah Y adalah Damage Control. Berdasarkan FEMA 356, tingkat kinerja arah X adalah Immediate Occupancy, arah Y, memiliki tingkat kinerja Immediate Occupancy.
Evaluasi Tingkat Pelayanan Jalan Studi Kasus: Jalan Gatot Subroto Jakarta
Authors: Kurniawan Ivan , Najid Najid
Published: December 2022

Gatot Subroto is one of the primary roads in Jakarta with primary arterial type. Gatot Subroto road passes through two administrative cities, namely the administrative cities of South Jakarta and Central Jakarta. Currently, the Gatot Subroto Road has reduced it capacity due to overcrowding on the road, causing traffic jams. The research location in on the Gatot Subroto road Cawang to Grogol and Grogol to Cawang. In this study, we will discuss the level of service on Gatot Subroto road. The research method used the ministerial regulation number 14 of 2006, the ministerial regulation number 96 of 2015 and 1997 Indonesian Road Capacity Manual (MKJI). The research was conducted by using a traffic low survey method on Gatot Subroto road by noting the number of vehicles thast passing by, so that researchers can find out the capacity, free flow speed, volume, density, degree of saturation and level of service of these roads. From the results of data processing, the LOS value of each road directions is 1.70 and 1.41 so that it enters the service level category “category F”. Questionnaires were also distributed to 100 respondents. This questionnaire aims to obtain perception data in the form of the respondent’s speed and time when passing through the Gatot Subroto road in smooth, non-smooth and congested conditions. Then the results of direct analysis and questionnaires will be compared with the Regulation of the Minister of Transportation Regulation No.14 of 2006 and No.96 of 2015.Jalan Gatot Subroto merupakan salah satu jalan besar di Jakarta yang bertipe arteri primer. Jalan Gatot Subroto melewati dua kota adminstrasi yaitu kota administrasi Jakarta Selatan dan Jakarta pusat. Saat ini jalan Gatot Subroto kapasitasnya berkurang disebabkan karena kepadatan pada ruas jalan tersebut sehingga mengakibatkan kemacetan. Lokasi penelitian terdapat di ruas jalan Gatot Subroto Cawang arah Grogol dan Grogol arah Cawang. Pada penelitian ini, akan membahas mengenai tingkat pelayanan jalan di ruas Jalan Gatot Subroto. Acuan penelitian adalah Peraturan Menteri perhubungan no 14 tahun 2006, Peraturan Menteri perhubungan no 96 tahun 2015 dan Manual Kapasitas Jalan Indonesia (MKJI) 1997. Penelitian ini dilakukan dengan metode survey arus lalu lintas di jalan Gatot Subroto dengan mencatat jumlah kendaraan yang lewat, sehingga peneliti dapat mengketahui kapasitas, kecepatan arus bebas, volume, kepadatan, derajat kejenuhan dan tingkat pelayanan jalan dari ruas jalan tersebut. Dari hasil pengolahan data, diperoleh nilai LOS dari masing-masing arah jalan yaitu sebesar 1.70 dan 1.41 sehingga masuk ke kategori tingkat pelayanan “kategori F”. Dilakukan juga penyebaran kuesioner kepada 100 responden. Kuesioner ini bertujuan untuk mendapatkan data presepsi berupa kecepatan dan waktu responden saat melewati jalan Gatot Subroto dalam kondisi lancar, tidak lancar dan macet. Kemudian hasil observasi langsung dan kuesioner akan dibandingkan dengan Peraturan Menteri Perhubungan no 14 tahun 2006 dan no 96 tahun 2015.
ANALISIS R, ?0, CD PADA STRUKTUR RANGKA BETON BERTULANG DENGAN MULTISTROY X-BRACING MENGGUNAKAN METODE PUSHOVER
Authors: MARCELLA VRYSCILIA , Christianto Daniel
Published: December 2022

The difference in earthquake design regulations causes differences in building planning criteria. One way that can be done to increase stability and lateral stiffness is to use steel bracing. However, for buildings with reinforced concrete structures with steel bracing, the values of the response modification factor (R) and the strength factor ( ) and the deflection factor (Cd) have not been found in SNI 1726-2019. Therefore, the analysis is intended to review the values of R,  and Cd in reinforced concrete structures with steel bracing with a multistory configuration of X and V How to determine the value of R,  and Cd is to do a pushover analysis. The results of the analysis show that the steel bracing with multistroy X configuration with the bracing position on the edge of the building gives the best results where the first yielding occur in steel bracing and the column does not experience yielding. The ductility factor values for R are 6.85 (X direction) and 7.36 (Y direction). The values of  are 2.97 (X direction) and 2.42 (Y direction). While the value of Cd is 1.173 (X direction) and 1.107 (Y direction). Based on the level of performance, the structure is included in the Damage Control category in both X and Y directions if it is based on ATC-40. If based on FEMA 356, the X direction is Immediate Occupancy and the Y direction is Life Safety. Adanya perbedaan peraturan desain gempa menyebabkan terdapat perbedaan pula pada kriteria perencanaan bangunan. Salah satu cara yang dapat dilakukan untuk meningkatkan kestabilan dan kekakuan lateral adalah menggunakan bracing baja. Namun, untuk bangunan dengan struktur beton bertulang dengan bracing baja, nilai dari faktor modifikasi respons (R) dan faktor kuat lebih ( ) dan pembesaran defleksi (Cd) belum terdapat pada SNI 1726-2019. Oleh karena itu, analisis ini ditujukan untuk meninjau nilai R,  dan Cd pada bangunan struktur beton bertulang dengan bracing baja dengan konfigurasi multistory X dan V. Cara untuk mengetahui besarnya nilai R,  dan Cd adalah dengan melakukan analisis pushover. Hasil analisis menunjukkan bahwa bracing baja dengan konfigurasi multistroy X dengan posisi bracing di tepi bangunan memberikan hasil yang terbaik, dimana bracing leleh pertama dan kolom tidak mengalami pelelehan. Nilai faktor daktilitas R adalah 6,85 (arah X) dan 7,36 (arah Y). Nilai  adalah 2,97 (arah X) dan 2,42 (arah Y). Sedangkan nilai Cd adalah 1,173 (arah X) dan 1,107 (arah Y). Berdasarkan tingkat kinerja struktur termasuk dalam kategori Damage Control baik arah X dan Y jika berdasarkan ATC-40. Apabila berdasarkan FEMA 356, untuk arah X adalah Immediate Occupancy dan arah Y adalah Life Safety.
ANALISIS FINITE ELEMENT DEFORMASI RIGID INCLUSION DENGAN DAN TANPA INCLUSION CAPS DI TIMBUNAN BATUBARA
Authors: Arry Muhammad Farrel Mahran , Iskandar Ali , Pranata Giovanni
Published: December 2022

Kebutuhan energi yang besar untuk bangsa ini membuat para pelaku usaha mencoba bisnis pertambangan. Kalimantan Utara dengan cadangan batubara yang cukup besar menjadi salah satu incaran dari para pengusaha. Dalam membangun usaha pertambangan perlu di dukung oleh infrastruktur yang sangat memadai. Banyak tantangan yang dihadapi saat membangun infrastruktur tersebut salah satunya adalah tanah lunak yang tersebar di Kalimantan Utara. Tanah lunak menjadi kendala infrastruktur yang tidak boleh dipandang sebelah mata karena deformasi yang diakibatkan tanah lunak dapat berakibat fatal bagi suatu struktur bangunan. Untuk mengatasi permasalahan tersebut banyak metode perbaikan tanah yang bisa digunakan salah satunya adalah rigid inclusion. Metode ini mengambil prinsip dasar yaitu transfer beban dengan disalurkan ke load transfer platform yang merupakan ciri khas dari metode ini. Penambahan inclusion caps juga merupakan salah satu opsi pemodelan dari metode ini dimana dapat meningkatkan effisiensi di rigid inclusion. Dengan metode ini waktu pengerjaan akan lebih cepat dan efisien serta membuat deformasi tanah yang terjadi tidak besar. The large energy demand for this nation makes business people try the mining business. North Kalimantan, with its large coal reserves, is one of the targets of entrepreneurs. In building a mining business it is necessary to be supported by a very adequate infrastructure. Many challenges were faced when building the infrastructure, one of which was soft soil spread across North Kalimantan. Soft soil is an infrastructure constraint that should not be underestimated because the deformation caused by soft soil can be fatal to a building structure. To overcome these problems, there are many soil improvement methods that can be used, one of which is rigid inclusion. This method takes the basic principle of load transfer by being channeled to a load transfer platform which is the hallmark of this method. The addition of inclusion caps is also one of the modeling options of this method which can increase efficiency in rigid inclusion. With this method, the processing time will be faster and more efficient and the soil deformation that occurs is not large.
ANALISIS PERILAKU PELAT KANTILEVER BETON BERTULANG DENGAN BUKAAN MENGGUNAKAN METODE ELEMEN HINGGA
Authors: Christopher Daniel Evan
Published: December 2022

Often, in various building structures it is necessary to have openings either in the slab or in the wall structure to meet the needs of building functions such as pipelines, stairs and so on. Openings in the slab can weaken the strength of the slab due to the cut-out of steel reinforcement and concrete in the opening area. The calculation method used in this study is finite element method with MIDAS FEA software which serves to determine the stress and deflection of the tested cantilever slabs. This study aims to determine the effect of openings on the behavior of reinforced concrete cantilever slabs. Seven cantilever slabs consisting of slabs without openings and slabs with different conditions were used as the object of numerical study in this research. The size and location of the opening are the main parameters to consider. Based on the research, it was found that the closer and larger the size of the opening to the support, the smaller the stiffness and maximum load capacity of the cantilever slab. With the opening, the stress on the cantilever slabs will experience an average stress increase of 2 times compared to the cantilever slab without opening. In addition, with the opening in the cantilever slabs, the stress will be concentrated around the opening. Sering kali, dalam berbagai struktur bangunan diperlukan adanya bukaan baik pada pelat ataupun pada struktur dinding untuk memenuhi kebutuhan fungsi bangunan seperti jalur pipa, tangga dan sebagainya. Bukaan pada pelat dapat memperlemah kekuatan pelat dikarenakan terputusnya tulangan baja dan beton pada area bukaan. Metode perhitungan yang digunakan dalam penelitian ini merupakan metode elemen hingga dengan program MIDAS FEA yang berfungsi untuk mengetahui tegangan dan lendutan dari pelat kantilever yang diuji. Penelitian ini bertujuan untuk mengevaluasi pengaruh bukaan terhadap perilaku pelat kantilever beton bertulang. Tujuh pelat yang terdiri dari pelat tanpa bukaan dan pelat dengan bukaan dengan kondisi berbeda dijadikan sebagai objek studi numerik pada penelitian ini. Ukuran dan lokasi bukaan merupakan parameter utama yang diperhatikan. Berdasarkan penelitian diperoleh bahwa semakin dekat dan besar ukuran bukaan dengan tumpuan, semakin kecil kekakuan dan kapasitas beban maksimum dari pelat kantilever tersebut. Dengan adanya bukaan, tegangan pada pelat kantilever akan mengalami kenaikan tegangan sebesar rata-rata 2 kali dibanding pelat kantilever tanpa bukaan. Selain itu dengan adanya bukaan pada pelat kantilever, tegangan akan terkonsentrasi pada daerah bukaan tersebut.
Analisis Pengaruh Bentuk Bukaan Pada Pelat Lentur Dengan Metode Elemen Hingga
Authors: Singh Prem , Tedianto Leo S.
Published: December 2022

Openings in the slab are generally unavoidable. Openings need to be provided to meet the needs of services such as water pipes, electrical wiring, and air vents. The area around the opening will experience an increase in deflection and stress. In this thesis, the plate will be analyzed with variations in the shape of the opening and boundary conditions. The shape of slab is square and receives a transverse uniform load. The shapes of the openings are square, rectangle, and circle. The area of the openings is kept the same and flexed at the center of the plate with different boundary conditions i.e. simple support, fixed on 4 sides, fixed on 3 sides, fixed on 2 opposite sides, and fixed on 2 adjacent sides. Slab analysis with openings was carried out using the finite element method and the help of the MIDAS FEA software. The results of the analysis showed that among the three shapes of openings, area around rectangular openings tend to produce the highest increases in displacement and stress viz. 2.6 times and 4.7 times. Meanwhile, area around the circular opening experienced the lowest increase in deflection and stress viz. 1.3 times and 1.1 times. The boundary conditions that cause the highest increase in deflection and stress are simple supports.Bukaan pada pelat umumnya tidak dapat dihindarkan. Bukaan perlu dibuat untuk memenuhi kebutuhan pelayanan seperti pipa air, kabel listrik, dan ventilasi udara. Daerah pada sekeliling bukaan akan mengalami peningkatan lendutan dan tegangan. Pada skripsi ini, akan dianilisis pelat dengan variasi bentuk bukaan dan kondisi batas. Pelat yang dianalisis berbentuk bujur sangkar dan menerima beban merata secara transversal. Bentuk bukaan yang dianalisis adalah bujur sangkar, persegi panjang, dan lingkaran. Luas ketiga bentuk bukaan dipertahankan tetap sama dan diltekkan pada pusat pelat dengan kondisi batas yang berbeda-beda yaitu tumpuan sederhana, jepit di 4 sisi, jepit di 3 sisi, jepit di 2 sisi berseberangan, dan jepit di 2 sisi bersebelahan. Analisis pelat dengan bukaan dilakukan menggunakan metode elemen hingga dan bantuan software MIDAS FEA. Hasil analisis menunjukkan diantara ketiga bentuk bukaan, bukaan berbentuk persegi panjang cenderung menghasilkan peningkatan lendutan dan tegangan yang paling tinggi yaitu sebesar 2.6 kali lipat dan 4.7 kali lipat. Sementara bukaan berbentuk lingkaran mengalami peningkatan lendutan dan tegangan yang paling rendah yaitu 1.3 kali lipat dan 1.1 kali lipat. Adapun kondisi batas yang menyebabkan terjadinya peningkatan lendutan dan tegangan yang yang paling tinggi adalah tumpuan sederhana.
PERSEPSI PENGGUNA TERHADAP RENCANA PENGEMBANGAN ANGKUTAN DALAM KAWASAN LIPPO KARAWACI VILLAGE TANGERANG
Authors: Wicaksana Josua
Published: December 2022

Lippo Karawaci Village is a Mandarin city located in the city of Tangerang, Banten province. Lippo Karawaci Village has various land use functions such as work trips, school trips, shopping trips, work business trips, social trips, dining trips, recreational trips. The area has the potential for the presence of microbuses in the area but has not been developed further. Regional buses in the area tend to be stagnant and not optimally operated. The purpose of this study is to determine the travel patterns, user characteristics and user perceptions in Lippo Karawaci Village. The method used in this research is descriptive and crosstabulation. Descriptive and crosstabulation approaches are used to describe current travel patterns, characteristics, and user perceptions in the field. The results showed that the travel patterns of users tended to aim at the Lippo Central area with a percentage of 51.8%, the majority 36.5% aiming for work, and 77.8% of users' perceptions of agreeing to the transportation development plan in the area.Keywords: Land Use Function; Lippo Karawaci; Transportation; Public Transportation; User Perception. Lippo Karawaci Village merupakan sebuah kota mandari bertempat di kota Tangerang provinsi banten. Lippo Karawaci Village mempunyai fungsi guna lahan bervarian seperti perjalanan pekerjaan, perjalanan sekolah, perjalanan belanja, perjalanan bisnis pekerjaan, perjalanan sosial, perjalanan untuk makan, perjalanan rekreasi. Wilayah tersebut berpotensi untuk adanya mikrobus di dalam kawasan namun belum dikembangkan lebih lagi. Bus kawasan didaerah tersebut cenderung stagnan dan tidak optimal pengoperasiannya. Tujuan dari penelitian ini mengetahui pola perjalanan, karakteristik pengguna dan persepsi pengguna di Lippo Karawaci Village. Metode yang digunakan dalam penelitian ini adalah deskriptif dan crosstabulation. Pendekatan deskriptif dan crosstabulation digunakan untuk menggambarkan pola perjalanan, karakteristik, dan perspesi pengguna yang ada dilapangan saat ini. Hasil penelitian menunjukan bahwa pola perjalanan pengguna yang cenderung bertujuan ke wilayah Lippo Central dengan presentase sebesar 51.8%, mayoritas 36.5% bertujuan untuk bekerja, dan 77.8% persepsi pengguna setuju terhadap rencana pembangunan angkutan dalam kawasan.Kata kunci: Fungsi Guna Lahan; Lippo Karawaci; Transportasi, Angkutan Umum; Persepsi Pengguna.
ANALISIS PRODUKTIVITAS TENAGA KERJA PADA PEKERJAAN PENULANGAN DI KOTA MANADO DENGAN METODE WORK SAMPLING
Authors: Lalujan Andre Nathaniel , Sutandi Arianti
Published: December 2022

Labor productivity has an important role in the success of a construction project, especially in Manado City where economic and population growth causes constructions need to increase. One of the jobs in construction that requires skilled workers is reinforcement work. In measuring labor productivity on reinforcement work, one of the methods that can be used is work sampling method. This Sampling method is done by categorizing the activities of workers into one of three categories, namely effective work, essential contributory work, or ineffective work. During the observation period, data are collected on activities that affect productivity when the workforce is in contributory work, and ineffective work to determine the factors that affect productivity on the project. After 8 weeks of observation data is obtained, the calculation steps are carried out such as data uniformity testing, minimum sample data test, and the calculation of labor effectiveness using the Labor Utilization Rate (LUR) approach and calculate productivity value based on the output of labor in kg/day/person unit. From the results of the calculations, the effectiveness of the LUR (Labor Utilization Rate) is 63,44%, with a productivity of 119,75 kg/day/person for reinforcement workers in Manado City.
 
Abstrak
Produktivitas tenaga kerja memiliki peranan penting terhadap keberhasilan suatu proyek konstruksi, khususnya di kota Manado dimana berkembangnya ekonomi dan populasi menyebabkan kebutuhan konstruksi yang terus meningkat. Salah satu pekerjaan dalam konstruksi yang membutuhkan tenaga kerja yang ahli adalah pekerjaan penulangan. Dalam mengukur produktivitas tenaga kerja pada pekerjaan penulangan di kota Manado, metode yang dapat digunakan adalah metode work sampling. Work sampling dilakukan dengan mengkategorikan aktivitas pekerja kedalam satu dari tiga kategori yaitu effective work, essential contributory work, dan ineffective work. Selama masa pengamatan juga akan dikumpulkan data aktivitas-aktivitas yang mempengaruhi produktivitas saat tenaga kerja berada dalam contributory work, dan ineffective work untuk mengidentifikasi faktor yang mempengaruhi produktivitas pada proyek di Kota Manado. Setelah data pengamatan selama 8 minggu didapatkan, dilakukan tahapan-tahapan perhitungan seperti pengujian keseragaman data, uji kecukupan data, perhitungan efektivitas tenaga kerja dengan menggunakan pendekatan Labor Utilization Rate (LUR), dan nilai produktivitas berdasarkan hasil output tenaga kerja dalam satuan kg/hari/orang. Dari hasil perhitungan tersebut didapatkan nila efektivitas LUR (Labor Utilization Rate) sebesar 63,44%, dengan produktivitas sebesar 119,75 kg/hari/orang untuk tenaga kerja pekerjaan penulangan di kota Manado
ANALISIS NUMERIK PERILAKU DINDING PANEL BETON RINGAN DENGAN VARIASI DIMENSI AKIBAT BEBAN SIKLIK
Authors: Putra Ferdinand Jaya , Hanafiah  , Nurjannah Siti Aisyah
Published: December 2022

The Construction of landed houses and offices reduces the availability of land, especially in big cities in Indonesia such as Jakarta. So that development is shifted vertically in order to make the best use of the land. Indonesia is a country surrounded by volcanoes that can cause earthquakes. Medium-magnitude earthquakes often cause damage to non-structural works, such as interior or exterior walls. Therefore, in this study, we will analyze the behavior of the wall panel with the help of finite element software, namely ANSYS. The method used in ANSYS has been verified by comparing the results of the research of Yu, et al., 2019 and the analysis of ANSYS, with a percentage difference of ?10%. The wall panels in this study had 4 models with variations in width dimensions made of lightweight concrete and given reinforcement to increase strength. Testing the behavior of the panel walls was carried out by testing static lateral and cyclic loads based on the recommended loading program from Yu, et al., 2019. The performance assessment of the panel wall model is carried out based on the panel wall behavior criteria according to the ACI 374.1-05, stress contour, and displacement contour. The results of the testing of the 4 models meet the standard criteria of ACI 374.01-5. The largest stress and displacement contour values are model D of 32.03 MPa and 75,52 mm.
 
Abstrak
Gempa kerap menimbulkan kerusakan pada pekerjaan non-struktur, seperti dinding bagian dalam atau luar. Maka dari itu pada penelitian ini akan menganalisis perilaku dinding panel dengan bantuan software finite element yaitu ANSYS. Metode yang digunakan pada ANSYS akan diverifikasi dengan cara membandingkan hasil penelitian Yu, et al., 2019 dan analisis ANYS, dengan selisih persentase ≤ 10%. Dinding panel dalam penelitian ini memiliki 4 model variasi dimensi lebar yang terbuat dari beton ringan dan tulangan untuk menambah perkuatan. Pengujian perilaku dinding panel dilakukan dengan beban lateral dan siklik statik berdasarkan pembebanan yang direkomendasikan dari Yu, et al., 2019. Penilaian kinerja model dinding panel dilakukan berdasarkan pada kriteria perilaku dinding panel menurut ACI 374.1-05, kontur tegangan, dan kontur perpindahan. Hasil dari pengujian dari ke empat model memenuhi standar kriteria ACI 374.1-05. Nilai kontur tegangan dan perpindahan terbesar adalah model D sebesar 32,03 MPa dan 75,52 mm.
The Role of Ultrasound in the Diagnosis of Gallstones and Assessment of Gallbladder Function
Authors: Van Ngoc Doan , Dinh Au Hoang
Published: December 2022

A study of 46 patients diagnosed with gallstones by ultrasound, with indications for assessment of gallbladder function to consider percutaneous gallstone lithotripsy at several hospitals in Hanoi from August 2019 to March 2020. Result: mean age 41.76 ± 16.11, common age 30-50. Gallstones are more common in women than in men, with a male/female ratio of 1:1.1. Average BMI accounted for 76.9%; 45.7% of cases had one stone; gravel with size >10 mm accounted for the majority of 76.1%; 89% of stones were mobile, 95.7% of stones were hyperechoic with shadow. Gallbladder contractility index ≥ 40% accounted for 95.7%. The average gallbladder contractility index was 64.2 ± 16.1%, this index in men was 64.6 ± 15.5%, and in women, it was 63.7 ± 16.9%. 95.7% of cases still had gallbladder contractile function. Conclusion: Ultrasound plays an important role and has many advantages in diagnosing gallstones and evaluating gallbladder function before percutaneous gallstone lithotripsy.
Anti-peptic Ulcer of the N-hexane Fraction from Sanchezia nobilis Hook.F. Leaves and its Isolated Compounds
Authors: Thi Xuan Bui , Minh Ngoc Tran , Thanh Hoa Tran
Published: December 2022

The n-hexane fraction of the Sanchezia nobilis Hook.f. leaves was evaluated for its effect on the gastric ulcer with pyloric ligation (Shay) rat model, analgesia effect on hot plate model and pain threshold meter, and inhibitory effect on Helicobacter pylori (H.P). The data showed a significant reduction in ulcer score, gastric volume, and total acidity and tended to reduce free acidity and increase gastric pH. In addition, the n-hexane fraction had a central analgesic effect and H.P inhibition. Chemical investigation of the n-hexane fraction resulted in the isolation of the four compounds (1 – 4). By using NMR and ESI-MS spectra, these compounds were identified chemical structures (3β, 5α, 22E)-stigmasta-7,22-dien-3-ol (1), coccinic acid (2), 7-hydroxy-6-methoxy coumarin (3), and betulinic acid (4). All compounds were reported for the first time from the Sanchezia genus.
Flos Lonicerae: A Review of Chemical Structures and Biological Activities of Phenolic Derivatives
Authors: Tuan Pham Quoc , Anh Tran Thi Van , Hai Nguyen Thanh , Loi Ha Quang , Hung Dao Viet , Hoa Ha Thanh , Diep Nguyen Thi Minh , Thinh Ngo Thi Xuan
Published: December 2022

Flos Lonicerae, a widely used Vietnamese medicinal material, is the dried buds or flowers of Lonicera japonica Thunb., and several other species of genus Lonicera such as Lonicera dasystyla Rehd., Lonicera confusa DC., Lonicera cambodiana Pierre ex Danguy, belonging to the family Caprifoliaceae. This material has been used for a long time in traditional medicine for clearing heat, removing toxins, and dispersing wind heat. According to a variety of recent phytochemistry and biological studies that we systematically summarized, Flos Lonicerae contains 129 phenolic derivatives including 48 flavonoids, 13 lignans and neolignans, 55 phenolic acid derivatives, and 13 other phenolic compounds. These phenolic compounds have remarkable biological effects such as antibacterial, antiviral, antioxidant, anti-inflammatory, anti-cancer, hepatoprotective, anti-endotoxin, anti-allergic, anti-diabetic, cardioprotective, anti-allergic activities, etc. In particular, chlorogenic acid, a prominent component with significant biological activities, is utilized as a marker compound to evaluate the quality of Flos Lonicerae in the Vietnamese and Chinese Pharmacopoeia.
Preparation of Berberine Chloride Nanoparticles by Ball Milling Method
Authors: Thi Van Anh Tran , Viet Hung Dao , Quoc Tuan Pham , Thanh Hoa Ha , Thi Minh Diep Nguyen , Van Thang Nguyen , Thi Sau Ngo , Thi Duyen Trinh , Thanh Hai Nguyen , Van Khanh Nguyen
Published: December 2022

Berberine is a quaternary benzylisoquinoline alkaloid that has been used for the local treatment of gastrointestinal tract diseases. Recently, several pharmacological effects of berberine have been reported, which include anti-hypertension, antitumor, anti-hypercholesterolemia, and neuroprotective effects. However, berberine has exhibited poor aqueous solubility and low oral bioavailability. To overcome these limitations, this study aims to develop and investigate nano berberine. Nano berberine fabricated by ball milling method is a simple process and easily applied in the production scale. The characterization of nano berberine was evaluated, including appearance, particle size, potential zeta, dissolution in vitro in a phosphate buffer media (pH 6.8), differential scanning calorimetry (DSC) analysis, fourier transformed infrared spectroscopy (FTIR), and X-ray diffraction analysis (XRD). Results from this study showed that spray-dried nano berberine powder was almost uniform in size, particle size average of 570.7 nm, and potential zeta of -28.6 mV. The dissolution in vitro study revealed that nano berberine was about 2 times more soluble than raw berberine for 60 minutes. No incompatibility between drug and excipients can be observed through FTIR and DSC analysis. XRD analysis suggested that raw berberine and nano berberine might exist in a crystal form. Thus, findings from this study indicate that the physicochemical properties of spray-dried nano berberine may increase the bioavailability of oral berberine.
Creation of Standard DNA for Detection and Quantification of White Spot Syndrome Virus in Shrimps by Real-time PCR (qPCR)
Authors: Cuong Tran Viet , Nghia Phan Tuan , Loan Nguyen Thi Hong
Published: December 2022

White spot syndrome virus (WSSV) is a double stranded DNA virus that causes WSS diseases for many crustaceans including the Penaeidae family shrimp. In this study, standard DNA for detection and quantification of WSSV by real-time polymerase chain reaction (qPCR) method was created. A specific gene fragment of 126 bp from WSSV genome was successfully amplified by PCR and cloned into pGEM-T vector. qPCR calibration curves using the created recombinant pGEM vector harboring 126 bp gene fragment as the standard DNA at concentrations of 3x102 to 3x108 copies/mL showed to have good linear regression with an efficiency of 99.1%, correlation coefficient R2 of 0.998 and the slope of -3.344. The recombinant vector was also used as a positive standard for detection and quantification of WSSV in a number of WSSV-infected shrimp samples and the values ranging from 3.69x103 copies/mL to 1.25x108 copies/mL WSSV were found in the collected samples.
Investigation of the GeoGebra-supported teaching material development process of pre-service physics teachers
Authors: ÇILDIR Sema , ŞEN Ahmet İlhan
Published: December 2022

In contrast to educational methods, which is using ready-made technology, in this study, activities were designed aiming at improving pre-service physics teachers’ computer-aided material development skills. The study was realized in the “Teaching Technologies and Material Design” course at the Physics Education program of a state university in Ankara. During this process, pre-service teachers have been guided not only to use technology-based pre-made course materials but also to prepare their own course materials. For material designs, GeoGebra was preferred because it is free and multilingual dynamic software. During the evaluation phase, the product was handled together with the process taking into consideration material design criteria. As a result, it was determined that pre-service physics teachers gained the ability to develop their own course materials using GeoGebra. It was seen that pre-service physics teachers could be used GeoGebra in the physics classes as a supporting software, too.
Superior Vena Cava Obstruction with Thrombolytic Therapy in Primary Antiphospholipid Syndrome
Authors: Adel Manal , Mahmoud Kareem , Soliman Haithem , Mashoor Shady , Mashaal Marwa
Published: December 2022

We report a case of superior vena cava obstruction of a 39 years old female patient with primary antiphospholipid syndrome presented with upper limb pain and swelling, which improved on thrombolytic therapy, we review patients with Antiphospholipid syndrome and management with thrombolytic therapy.
Department of Nanocomposite Materials of Novosibirsk State University (Physics Department, Department of Natural Sciences)
Authors: Predtechenskiy M. R. , Khasin A. A.
Published: December 2022

The article presents the department of nanocomposite materials of the Novosibirsk State University, describing the history of its creation. The reader can also find here some general information about the staff and the courses taught.
Study of the Regimes of Diffusive Combustion of a Hydrogen Microjet
Authors: Kozlov V. V. , Litvinenko M. V. , Litvinenko Yu. А. , Tambovtsev A. S. , Shmakov A. G.
Published: December 2022

The paper presents the results of experimental studies of scenarios of diffusion combustion of a microjet of hydrogen flowing out of a cylindrical micronozzle with a diameter of 200 μm. The hydrogen microjet is ignited near the nozzle exit and at a distance. The experimental data are compared with the data previously obtained, and the results are expressed in dimensionless parameters (in terms of Reynolds numbers). It is established that the stabilization of flame during the outflow of a circular micro jet of hydrogen is associated with the presence of heating of the nozzle by a spherical flame region covering the nozzle section. The hysteresis of the diffusion combustion process of circular hydrogen microjets is shown depending on the ignition location of the microjet (near or far from the nozzle exit) and the change in the flow rate (growth or decrease).
Development of a Heat Converter Based on the Anomalous Photovoltaic Effect
Authors: Onarkulov K. E. , Nurdinova R. A. , Yuldashev Sh. A. , Yuldashev A. A.
Published: December 2022

In this article, an optoelectronic method, technique and technology for obtaining a stabilized electric field using external, natural renewable sources of various types has been developed. The proposed device operates on the basis of the anomalous photovoltaic effect (AFN effect) where the heat of human body is converted into an electric field. It is shown that using the potential of an electric field it is possible to develop individual, autonomously operating micro-miniature optoelectronic devices for various purposes.
Accelerator Mass Spectrometry “Golden Valley”
Authors: Parkhomchuk V. V. , Petrozhitskii A. V. , Ignatov M. M. , Parkhomchuk E. V.
Published: December 2022

Information about the resources of the laboratory “AMS Golden Valley” and the state of affairs in accelerator mass spectrometry (AMS) in Russia is presented. The key differences of the AMS method from traditional methods for determining radiocarbon are described, the principle of operation of accelerator mass spectrometers of Russian (unique scientific facility “AMS BINP SB RAS”) and Swiss (MICADAS-28) production is given, and basic information is given about the methods for preparing graphite targets for AMS-analysis.
The Transition of Limited Face-to-Face Learning After Covid-19 Pandemic at Islamic Private Junior High Schools Pontianak
Authors: Syahrudin Husni , Iwan Ramadhan  , Nur Meily Adlika  , Muhammad Agus Hardiansyah  , Yudhistira Oscar Olendo  , Fitria Arifiyanti
Published: December 2022

The article aimed to analyze the limited face-to-face learning strategy during the Covid-19 pandemic at Islamic Private Junior High Schools Pontianak. With the limited implementation of face-to-face learning, schools were required to design learning strategies that in accordance with the conditions of learning implementation during the Covid-19 pandemic. As has been applied at this school from the results of this study, both in the school environment, teaching and learning activities and the availability of various health protocol facilities as a strategy for implementing face-to-face learning during the pandemic. The research used descriptive qualitative with data collection techniques incuded observation, interviews and documentation. The limitations of face-to-face learning at Islamic Private Junior High Schools Pontianak were the number of years of study at school, the lack of interaction and the implementation of assessments which had better transformation. Meanwhile, Islamic Private Junior High Schools Pontianak had merely once a week for learning implementation, so schools must maximize learning strategies. Keywords: Limited Face-to-Face Learning, Learning After Covid 19, Transition Learning Online