bluuebunny/crossref_metadata_2025_split huggingface dataset:
PERFORMA PENERANGAN INTERIOR RUANG KELAS POLITEKNIK NEGERI JAKARTA MENUJU STANDAR INTERNASIONAL (Studi Kasus Ruang Kelas Jurusan Teknik Sipil Politeknik Negeri Jakarta)
Authors: NURWIDYANINGRUM DYAH , SUSILOWATI WAHYUNI 
Published: October 2023

ABSTRACT
This study aims to determine the quality of classroom lighting civil engineering department california state jakarta based activities outlined in the new curriculum in 2011. To achieve these objectives, the research method used was a qualitative research approach to lighting design (simulation design). In the classroom lighting design, dig notch field work (task lighting) faculty and students is important. The data analysis technique by describing the image and the lighting of the existing classrooms. Image descriptions created with pro relux program and help support programs autocad and sketch up. Light measurements performed with tools lux meter. Juxtaposed with the description of the lighting standard classroom of iesna. From the analysis result in the target outcome of this research is the design proposal classroom illumination internationalstandard.
Keywords: task lighting, relux pro, lux meter, iesna, simulation design
ABSTRAK
Penelitian ini bertujuan untuk mengetahui kualitas pencahayaan ruang kelas jurusan teknik sipil politeknik negeri jakarta berdasarkan kegiatan yang digariskan dalam kurikulum pendidikan terbaru tahun 2011. Untuk mencapai tujuan tersebut, metode penelitian yang digunakan adalah penelitian kualitatif dengan pendekatan desain pencahayaan (simulation design). Dalam desain pencahayaan ruang kelas, menggali kedudukan bidang kerja (task lighting) dosen dan mahasiswa menjadi penting. Teknik analisis data dengan cara mendeskripsikan gambaran ruang kelas dan pencahayaan eksisting. Gambar deskripsi dibuat dengan program relux pro dan bantuan program pendukung autocad dan sketch up. Pengukuran cahaya dilakukan dengan alat bantu lux meter. Hasil deskripsi disandingkan dengan standar pencahayaan ruang kelas dari iesna. Dari analisis menghasilkan target luaran dari penelitian ini yaitu usulan desain iluminasi ruang kelas berstandar internasional.
Kata kunci: task lighting, relux pro, lux meter, iesna, simulation design
EFEK KADAR LUMPUR TERHADAP KEKUATAN BETON GEOPOLIMER
Authors: Achmad Djedjen 
Published: October 2023

Abstract

It has been tested the effects of claycontent (material through sieve No. 200) on the coarse aggregate and fine aggregate on the characteristics of geopolymer concrete. Research done on aggregate with three variations content of clay, i.e 0.94%, 2.4%, and 4.8% by weight of the combined aggregate (fine aggregate and coarse aggregate). Geopolymer concrete made with the composition of the mixture of w/b = 0.25, 10M NaOH, and ratio of Na2SiO3: NaOH = 2: 1, and the ratio between coarse aggregate: fine aggregate = 65%: 35%. In the test the workability of fresh concrete with a slump, at the age of 7, 14 and 28 day compressive strength testing, while the split tensile strength test and flexural tensile strength was tested at 28 days.
From the result of research, the higher of claycontent at the aggregate, the lower the compressive strength. With the clay content of 2.4% and 4.8% at 28 days compressive strength is differences compared with 0.94% claycontent decreased by 27.52% and 50.15%. Similarly of tensile strength when compared to the tensile strength at content of 0.94% clay, the clay concentration of 2.4% and 4.8% the tensile strength decreased by 19:47 and 25.18% and flexural tensile strength at a content of 2.4% and 4,8% clay, decreased by 22:34 and 42.78%, compared to 0.94% clay content.

Keywords: Concrete. geopolymer, clay, characteristics, strength

Abstrak

Telah diuji efek kadar lumpur (material lolos saringan No. 200) pada agregat kasar dan agregat halus terhadap karakteristik beton geopolimer. Penelitian dilakukan terhadap agregat dengan kadar lumpur bervariasi 0.94%, 2.4%, dan 4.8% terhadap berat agregat gabungan (agregat halus dan agregat kasar). Beton geopolimer dibuat dengan komposisi campuran w/b = 0,25, NaOH 10 M, dan perbandingan Na2SiO3 : NaOH = 2 : 1, serta perbandingan antara agregat kasar : agregat halus = 65 % : 35 %. Pada beton segar dilakukan uji workability dengan alat slump, pada umur 7, 14 dan 28 hari dilakukan pengujian kuat tekan, sedangkan uji kuta tarik belah dan kuat tarik lentur diuji pada umur 28 hari.
Dari hasil penelitian, semakin tinggi kadar lumpur pada agregat, kuat tekannya semakin rendah. Dengan kadar lumpur 2,4% dan 4,8% pada umur 28 hari perbedaan kuat tekannya dibandingkan dengan kadar lumpur 0.94 % turun sebesar 21.3 % dan 45.8%. Demikian pula kuat tarik belahnya jika dibandingkan dengan kuat tarik pada kadar lumpur 0.94 %, pada kadar lumpur 2,4% dan 4,8% kuat tarik belahnya turun sebesar 19.47 dan 25.18 % dan kuat tarik lenturnya pada kadar lumpur 2,4% dan 4,8% turun sebesar 22.34 dan 42.78 %, dibandingkan kuat tarik lentur pada kadar lumpur 0.94 %.

Kata kunci : Beton. geopolimer, lumpur, karakteristik,.kekuatan
BETON GEOPOLIMER NON-PASIR UNTUK BUIS BETON
Authors: Pratikto Pratikto , Sari Indah Puspita 
Published: October 2023

Abstract

Geopolymer concrete is concrete with a binder solution that does not need cement, but the use of fly ash as an adhesive for the content of silica and alumina very high. Fly Ash was activated with an alkaline solution such as Sodium Hydroxide and Sodium Silicate as catalyst. This research aims to make geopolymer concrete-buis with out sand that to be used as a water catchment form. This concrete is the variation of the concentration of NaOH used in the ratio Na2SiO3 / NaOH for 2 while the ratio of activator / fly ash is 0.3 and 2% superplasticizer content. Compaction method used with stabbing for treatment at a temperature of space left without special treatment until the age of testing as the reference point. For the characteristics of geopolymer concrete is analyzed from the results of the test specimen of compressive strength, tensile strength and flexural strength.
Reduced chance of rain water infiltrating into the soil and water control, to cope with flooding and drought are through infiltration wells which is one of the environmentally friendly drainage system by increasing infiltration of rainwater into the soil and reduce runoff to cause flooding. Buis concrete without cement and without sand will be a good and economical solution

Keywords: Geopolymer concrete, Fly ash, superplasticizer ,water catchment

Abstrak

Beton geopolymer adalah beton dengan larutan bahan pengikat yang tidak menggunakan semen, tetapi menggunakan fly ash sebagai perekat karena kandungan silika dan aluminanya sangat tinggi.Fly Ash yang digunakan diaktifkan dengan larutan alkali berupa Sodium Hidroksida dan Sodium Silikat sebagai katalisatornya.Penelitian ini bertujuan untuk membuat buis beton geopolimer non pasir untuk digunakan sebagai sumur resapan air.Beton ini dengan variasi konsentrasi NaOH yang digunakan pada rasio Na2SiO3/NaOH sebesar 2 sedangkan rasio activator /fly ash adalah 0,3 dan kadar superplasticizer 2%. Metode pemadatan dengan penusukan dan untuk perawatan dibiarkan disuhu ruang tanpa perlakuan khusus sampai umur pengujian (refensi).Untuk karakteristik beton geopolimer ini dianalisa dari hasil benda uji terhadap kuat tekan, kuat tarik dan kuat lentur.Berkurangnya kesempatan air hujan berinfiltrasi ke dalam tanah dan pengendalian air, untuk mengatasi genangan dan kekeringan adalah melalui sumur resapan yang merupakan salah satu sistem drainase berwawasan lingkungan dengan memperbesar resapan air hujan ke dalam tanah dan memperkecil aliran permukaan sebagai penyebab banjir. Buis beton tanpa semen dan tanpa pasir akan merupakan solusi yang baik dan ekonomis.

Kata Kunci: Beton geopolimer non pasir, Fly ash, superplasticizer , sumur resapan air
ANALISA KELAYAKAN MESIN MILLING F3 DENGAN PENGUJIAN KETELITIAN GEOMETRIK
Authors: Apriana Asep , Prianto Budi , Rahayu Minto 
Published: October 2023

ABSTRACT

This study aims to determine the feasibility of the F3 Milling machine by testing / measuring geometric accuracy, whether it was in accordance with the specifications recommended by the manufacturer and is still fit for use.
The method used is to melakukanpengukuran each component / parts that are directly related to the main movements.
Data from the measurement results are processed and compared to a reference from the factory, the activity starts from setting up the machine to be tested in a state of static, aids and measuring devices precision.
The results of these measurements will determine whether this F3 milling machine precision is still appropriate dengann accuracy of data contained in the manuals and still fit for use.

Keywords: optimization, geometric accuracy, machine tools, measures to

ABSTRAK

Penelitian ini bertujuan untuk mengetahui kelayakan mesin Milling F3 dengan melakukan pengujian / pengukuran ketelitian geometriknya, apakah masih sesuai dengan spesifikasinya yang direkomendasikan oleh pabrik pembuatnya dan masih layak digunakan.
Metode yang digunakan adalah dengan melakukanpengukuran setiap komponen / bagian yang berhubungan langsung dengan gerakan-gerakan utamanya.
Data hasil dari pengukuran diproses dan dibandingkan dengan acuan dari pabrik, kegiatan dimulai dari menyiapkan mesin yang akan diuji dalam keadaan static, alat-alat bantu dan alat-alat ukur presisi.
Hasil dari Pengukuran ini akan mengetahui apakah mesin milling F3 ini ketelitiannya masih sesuai dengann data ketelitian yang tercantum pada buku manualnya dan masih layak digunakan.

Kata kunci : optimasi, ketelitian geometric, mesin perkakas, layak guna
UJI TAHANAN GESEK MODEL FONDASI TIANG TERHADAP PERPINDAHAN KECIL DI DALAM BOX UJI
Authors: Pradiptiya Andikanoza , Yuwono Yuwono 
Published: October 2023

ABSTRACT

Some buildings imposes limits to pile foundation displacement with relatively small value so as not to cause damage to the structure. Loading test directly in the field requires a very high cost. To overcome this problem, it can be approached with a more economical cost, that is to move it into a certain scale models.
The method used is to create a media model as a test box testing, by simulating the actual model in the form of a scale model. This method is fairly cheap and efficient as it can be used for various models and can be used repeatedly. The study was conducted using models of reduced scale single pile foundation made of concrete with a length of 0.2 m, 0.3 m, 0.4 m and each diameter of 0.02 m, 0.03 m, 0.04 m. Pile model is jacked in clay soil that has been compacted in a box and then given a tensile load test referring to ASTM D3689-07 procedure E (Constant Rate of Uplift Test). Mobilization of frictional resistance is determined from the pile frictional resistance force and displacement of the pile. The results showed that the frictional resistance value is reduced to the value at a particular displacement or at critical displacement pile.

Keywords : scaled pile foundation , test box , small displacement , clay

ABSTRAK

Beberapa konstruksi bangunan memberikan batasan kepada perpindahan tiang yang terjadi dengan nilai relatif kecil agar tidak menyebabkan kerusakan struktur. Uji pembebanan langsung di lapangan memerlukan biaya yang sangat tinggi. Untuk mengatasi masalah ini maka dapat dilakukan pendekatan dengan biaya yang lebih ekonomis yaitu dengan memindahkan media lapangan ke media laboratorium dengan skala model tertentu.
Metode yang dipakai adalah membuat box uji model sebagai media pengujian, dengan mensimulasikan model yang sebenarnya ke dalam bentuk model skala. Metode ini cukup murah dan efisien karena dapat dipergunakan untuk berbagai model dan dapat dipergunakan secara berulang. Penelitian dilakukan menggunakan model fondasi tiang tunggal skala tereduksi yang terbuat dari beton dengan panjang 0,2 m, 0,3 m, 0,4 m dan masing-masing diameter 0,02 m, 0,03 m, 0,04 m. Model tiang dipasang dengan cara ditekan pada tanah lempung yang sudah dipadatkan dalam box uji kemudian diberikan beban tarik yang mengacu pada ASTM D3689-07 prosedur E (Constant Rate of Uplift Test). Mobilisasi tahanan gesek tiang ditentukan dari tahanan gesek satuan dan perpindahan tiang. Hasil penelitian menunjukkan bahwa nilai tahanan gesek berkurang pada nilai perpindahan tiang tertentu atau pada perpindahan tiang kritis.

Kata kunci : model pondasi, box uji, perpindahan kecil, lempung
Code-switching as a Learning Strategy for EFL Learners
Authors: Vela Gámez Martha Alicia 
Published: October 2023

Learning English as a foreign language (EFL) has great relevance for many people around the world due to globalization, technology, personal or professional goals and preferences. Likewise, English has been documented as one of the languages that has more non-native speakers than native speakers around the world (Shin, 2013). Code-switching is considered a linguistic variation and it has become a widely researched circumstance that is commonly reflected by bilingual, multilingual, and multicultural practices. This research has the objective to give an account of how English as a foreign language learner use code-switching as a learning strategy to achieve academic goals. A qualitative methodology and a descriptive approach were used to analyze data and to infer the following linguistic practices: a) code-switching use by emergent bilinguals as a learning strategy to acquire a foreign language and b) code-switching use affects emergent bilinguals´ language development. The research´s findings can be summarized stating that code-switching practices help students develop foreign language awareness by analyzing linguistic elements to express meaningful ideas taking it into practice. Concluding from extensive research, code-switching can be a helpful learning strategy for foreign language learners to achieve English within a communicative process allowing learners to be able to express and communicate a message proficiently.
UJI AKTIVITAS SITOTOKSIK FRAKSI N-HEKSAN BUAH KETUMBAR (Coriandrum sativum linn) TERHADAP LARVA UDANG (Artemia salina Leach)
Authors: Mega Yulia  , Aulia Yeza 
Published: October 2023

Ketumbar (Coriandrum sativum Linn) merupakan salah satu tanaman rempah-rempah yang biasa digunakan untuk pengobatan. Beberapa manfaat dari buah ketumbar yang digunakan oleh masyarakat secara tradisional yaitu radang lambung, campak, masuk angina, influenza, tekanan darah tinggi dan antikanker. Hasil skrinning fitokimia buah ketumbar menunjukkan adanya senyawa steroid, fenolik dan saponin. Penelitian ini bertujuan untuk mengetahui aktivitas sitotoksik fraksi n-heksan buah ketumbar terhadap larva udang (Artemia salina Leach) dengan metode BSLT (Brine Shrimp Lethality Test). Penelitian ini menggunakan buah ketumbar sebanyak 500gram kemudian diekstraksi secara maserasi dengan metanol, didapatkan ekstrak kental seberat 10,130 gram. Selanjutnya dilakukan fraksinasi menggunakan n-heksan, didapatkan ekstrak kental seberat 1,097 gram. Penelitian ini menggunakan 3 konsentrasi yaitu 10.000 ppm, 1.000 ppm dan 100 ppm. Berdasarkan hasil uji aktivitas sitotoksik fraksi n-heksan buah ketumbar didapatkan LC50 sebesar 741,31 ppm dan disimpulkan bahwa fraksi n-heksan bersifat aktif sitotoksik.
A influência da psicoterapia na obesidade: Aspectos farmacológicos e psicoterapêuticos - Revisão de literatura
Authors: Barros Rômulo Thaynan Viana , Silva Décio Fragata da 
Published: October 2023

A obesidade é uma condição de saúde preocupante, que afeta um número crescente de pessoas em todo o mundo, sendo caracterizada pelo acúmulo excessivo de gordura corporal. A psicoterapia e a farmacoterapia podem auxiliar no combate a essa doença através de diferentes técnicas. Nesse cenário, objetivou-se nesta pesquisa investigar como a psicoterapia e as abordagens farmacológicas podem favorecer o tratamento da obesidade. Trata-se de estudo de revisão sistemática, a qual a busca foi realizada nas bases de dados da SciELO e Medline, utilizando os termos: Obesidade; Psicologia; Psicoterapia e Farmacologia, na língua portuguesa e inglesa, conectadas através de “AND”; “OR”. As buscas foram realizadas em setembro de 2023. Após a leitura completa de 38 estudos, apenas 12 se alinharam com os objetivos da nossa investigação. Os dados apresentaram informações que acentuam o fato de que a psicoterapia pode influenciar positivamente no tratamento da obesidade e que os aspectos farmacológicos associados aos psicoterapêuticos são alternativas viáveis no combate a essa grande problemática de saúde. A partir desta análise, podemos concluir que tanto a terapia psicológica quanto os medicamentos demonstram ser promissores no contexto do tratamento da obesidade, apresentando potencial para serem eficazes. No entanto, há uma escassez de estudos abordando essa questão. Dessa forma, espera-se que esta pesquisa possa servir como um estímulo para a realização de futuros estudos científicos que explorem mais amplamente a relação entre a psicoterapia e a farmacoterapia no contexto do tratamento da obesidade.
ANALISIS TINGKAT KEPUASAN PENGUNJUNG BIOSKOP XYZ DI PURWOKERTO TERHADAP PELAYANAN DI MASA PPKM (Studi Kasus Salah Satu Bioskop di Purwokerto)
Authors: Tawakal Muhammad Iqbal , Winati Famila Dwi , Nurisusilawati Isnaini 
Published: October 2023

Bioskop merupakan salah satu industri hiburan bagi masyarakat di Indonesia. Dari data pengunjung bioskop pada tahun 2019-2021, terjadi penurunan yang sangat signifikan dari 27.646.450 penonton pada tahun 2019, 12.059.127 pada tahun 2020, dan 2.586.386 pada tahun 2021. Penyebab terjadinya penurunan ini adalah tingginya jumlah kasus COVID-19 menyebabkan sebagai akibat dari pemberlakuan PPKM untuk menghentikan penyebaran virus ini. Penelitian ini bertujuan untuk mengetahui tingkat kepuasan pengunjung bioskop terhadap pelayanan pada masa pandemi dan menganalisis tingkat kepentingan kinerja pelayanan pada bioskop XYZ Purwokerto. Responden penelitian ini terdiri dari 100 responden. Metode yang digunakan adalah CSI (Customer Satisfaction Index) dan IPA (Importance Performance Analysis). Hasil penelitian menunjukkan tingkat kepuasan pengunjung bioskop sebesar 74,65% yang berada dalam kategori puas. Sedangkan untuk hasil analisis dengan menggunakan metode IPA, rata-rata tingkat kepentingan pelayanan menurut konsumen sebesar 4,22, sedangkan tingkat kinerja sebesar 3,73.Jaminan keamanan dan kebersihan selama di lingkungan bioskop, serta komunikasi antara pengunjung dan karyawan bioskop berada dalam kuadran A, yang berarti indikator-indikator ini menjadi prioritas utama dalam perbaikan layanan. Usulan yang diberikan adalah mensterilkan bioskop secara berkala, menyemprotkan disinfektan untuk menghindari paparan virus, dan meningkatkan keamanan dengan menambahkan CCTV di setiap bagian lingkungan bioskop.
Highly sensitive electrochemical immunosensor based on electrodeposited platinum nanostructures confined in silica nanochannels for the detection of the carcinoembryonic antigen
Authors: Guo Qinping , Fan Xue , Yan Fei , Wang Yinquan 
Published: October 2023

In this study, we report a highly sensitive electrochemical immunosensor for carcinoembryonic antigen (CEA) detection based on the electrodeposited platinum nanoparticles (Pt NPs) confined in the ultrasmall nanochannels of vertically ordered mesoporous silica film (VMSF). VMSF bearing amine groups (NH2-VMSF) can be prepared on the indium tin oxide electrode surface via a one-step co-condensation route using an electrochemically assisted self-assembly method, which renders a strong electrostatic effect for [PtCl6]2- and leads to the spatial confinement of Pt NPs inside the silica nanochannels after electrodeposition. The external surface of NH2-VMSF is functionalized with CEA antibodies using glutaraldehyde as a coupling agent, resulting in an electrochemical immunosensing interface with good specificity for CEA detection. Under optimal experimental conditions, high affinity between the CEA antibody and CEA produces a steric hindrance effect for the accessibility of the electrochemical probe ([Fe(CN)6]3-) in the bulk solution to the underlying indium tin oxide surface, eventually resulting in the attenuated electrochemical signal and enabling the detection of the CEA with a wide linear range of 0.01 pg/mL∼10 ng/mL and a pretty low limit of detection of 0.30 fg/mL. Owing to the signal amplification ability of Pt NPs and the anti-biofouling property of NH2-VMSF, the as-prepared electrochemical immunosensor based on the Pt NPs@NH2-VMSF displays an accurate analysis of the CEA in human serum samples, holding significant promise for health monitoring and clinical diagnosis.
Mediated climate rift society: articulation and metabolic rift theories in analyzing climate change news in South Africa
Authors: Evans Henri-Count , Teer-Tomaselli Ruth 
Published: October 2023

IntroductionJournalism is essential in addressing climate change. Journalists' constructions of climate change issues, worldviews, and proposed solutions legitimise those aspects that are made commonsensical and are given discursive salience. The news media has often constructed climate change as a purely scientific issue whose solutions rely on technological interventions- thus neglecting climate change's cultural and political economics. This paper seeks to situate climate change journalism research within ecoCultural Studies and Environmental Sociology.MethodsThrough articulation and metabolic rift theories combined with discourse analysis techniques, this study examines how four weekly newspapers (the Sunday Times, the Mail &amp; Guardian, the City Press, and the Sunday Independent) in South Africa reproduced and re/presented neoliberal climate change solutions anchored on “green” and “clean” transition discourses - from 2011 to 2018.ResultsThe majority of discourse actors support the green economy initiative, with its normalisation facilitated by actors like scientists, media, and politicians. This discourse, prominent during both Zuma and Ramaphosa's administrations, has been integrated into South Africa's energy blueprints, emphasising job creation and cleaner air. While perpetuating capitalist inequalities, the green economy has been championed as a national project aligning with public aspirations. News media often portrays climate change solutions through a neoliberal, techno-optimistic lens, emphasising “green economy” and “sustainable development”. These solutions, paired with market principles, balance economic growth and environmental responsibility.