bluuebunny/crossref_metadata_2025_split huggingface dataset:
MOBILIZATION OF MINI PILE UPLIFT RESISTANCE IN SAND
Authors: Pradiptiya Andikanoza , Yuwono Yuwono , Sudardja Handi , Istiatun Istiatun 
Published: October 2023

Abstract

Shaft resistance of tension pile will be fully mobilized at certain displacement. Some structures impose limits to the displacement of pile with a relatively small value in order not to cause damage. Therefore, it is necessary to know the behavior of pile resistance reaction against load that works in every displacement.
The study was conducted using the model of single pile made of concrete with a length of 0,2 m ; 0,3 m ; 0,4 m and each diameter 0,02 m ; 0,03 m ; 0,04 m. The model pile is jacked in sand that has been compacted in a box and then given uplift load that refers to the ASTM D3689-07 procedure E. Pile resistance reaction is shown by pile friction modulus and determined by mobilized unit shaft resistance and pile displacement relationship.
The results showed that mobilization of uplift resistance of mini pile that has been counted using friction modulus can only approach the value of true observations, so that it requires further consideration as design parameter.

Keywords : Mini pile, sand , uplift resistance.
KAJIAN ANALISIS ENGINEERING DENGAN METODE COMPUTATIONAL FLUID DYNAMICS
Authors: Widiawaty Candra Damis , Siswantara Ahmad Indra , Gunadi Gun Gun R 
Published: October 2023

ABSTRACT

Computational fluid dynamic is fluid flow analysis in spesific system by mean of computer based simulation. The use of CFD to predict fluid flow in characteristic system which has specified conditions.
The purpose of this research is to describe the procedural of simulation. The scope of this research is to verify the calculation result with the simulation result. The method of this research are iteratif calculaation and simulation.
The result of iteratif calculation water outlet temperatur is of 71,88oC, while the simulation result for S1 is of 62,58 oC, S2 is of 79,44 oC, S3 is of 71,02oC, and S4 is of 71,68 oC. The difference of the result cause by the dimension of diameter tube, type of flow, and distribution of grid. The result of this research show that the accuration of simulation is depend on the intial engineering thingking, grid, and fluid flow specification.

Key words: CFD, fluid, grid, simulation

ABSTRAK

Computational Fluid Dynamics (CFD) adalah pemanfaatan komputer untuk menghasilkan informasi tentang bagaimana fluida mengalir pada kondisi tertentu. CFD digunakan untuk membuat prediksi aliran fluida di dalam suatu sistem tertentu pada suatu kondisi yang ditentukan.
Penelitian ini bertujuan mendeskripsikan langkah simulasi yang tepat. Lingkup penelitian ini adalah membandingkan hasil kalkulasi dengan hasil simulasi. Metode penelitian ini adalah kalkulasi iteratif dan simulasi. Hasil kalkulasi adalah temperatur keluaran air sebesar 71,88oC sedangkan dengan simulasi sebagai berikut parameter S1 sebesar 62,58 oC, S2 sebesar 79,44 oC, S3 sebesar 71,02oC, dan S4 sebesar 71,68 oC. Berbedaan hasil simulasi berurut-urut disebabkan oleh diameter tube, perbedaan tipe aliran, dan perbedaan distribusi grid. Hasil penelitian ini menunjukkan bahwa perancangan dengan software CFD sangat dipengaruhi oleh pemahaman pengguna terhadap sistem yang akan disimulasikan, pembangkitan grid/mesh, dan spesifikasi aliran.

Kata kunci: CFD, fluida, grid, simulasi
ANALISA KEKUATAN MEKANIK PADA MATERIAL AISI 4340 TERHADAP WELDING REPAIR DENGAN METODE SMAW
Authors: Purnama Dewin , Wardana Galih Ardy , Adicandra Nikko Setyo 
Published: October 2023

ABSTRAK

Perkembangan teknologi di bidang perindustrian yang semakin maju tidak dapat dipisahkan dari proses pengelasan, salah satunya adalah welding repair. Perbaikan pengelasan bisa mempengaruhi suatu prosedur untuk dapat menghasilkan komponen yang aman dan mampu digunakan sesuai dengan ketentuannya. Kekuatan sambungan las harus diperhatikan dan dijamin kekuatannya, sehingga diharapkan minimal kekuatannya sama dengan kekuatan base metal, khususnya material yang digunakan untuk poros. Tujuan dari penelitian ini adalah membandingkan kualitas mekanik antara raw material baja paduan rendah kekuatan tinggi (HSLA) AISI 4340 dengan material yang sudah dilas. Sehingga akan didapat informasi mengenai kekuatan perubahan sifat mekanik dari sambungan las material AISI 4340 setelah di welding repair dibandingkan dengan raw material AISI 4340.
Metode proses pengelasan yang digunakan adalah SMAW (Shielded Metal Arc Welding) DC polaritas terbalik dengan arus 70 Ampere dan 100 Ampere, elektroda yang dipakai E7016 dan E7018 diameter 3,2 mm serta kampuh yang digunakan adalah kampuh V-Groove dengan sudut 60°. Material uji adalah AISI 4340. Pengujian yang dilakukan adalah uji tarik, uji impak dan uji kekerasan.
Hasil akhir dari penelitian ini telah didapat nilai kekuatan tarik material hasil pengelasan mengalami penurunan sebesar 0,26% dibanding raw material. Nilai rata-rata kerja patah dan nilai ketangguhan material hasil pengelasan mengalami penurunan terhadap raw material, yaitu sebesar 13,73% untuk kerja patah dan 9,18% untuk nilai ketangguhan. Nilai rata-rata kekerasan material hasil pengelasan juga mengalami penurunan 1,64% terhadap raw material. Kesimpulan yang diperoleh dari penelitian ini adalah material AISI 4340 tidak dapat dilakukan welding repair menggunakan metode SMAW dengan elektroda E7018 diameter 3,2 mm.

Kata Kunci : Welding Repair, Las SMAW, AISI 4340, Sifat Mekanik Material
SPEECH RECOGNITON DENGAN PLATFORM LABVIEW DAN ANALISIS MENGGUNAKAN MATLAB
Authors: Alamsyah Ahmad Tossin , Istiqomah Hafizh Nurul , Amos Desmond 
Published: October 2023

ABSTRACTThis article discussed identify the speech recogniton by using Matlab and Labview Software, Labview software used to design digital Equalizer (EQ processor) and Matlab software are used to change the output EQ processor into the polynomial z parameter. Both of the Software are installed on PC with input devices from Condenser Microphone and the output device formed a loudspeaker. The design of EQ processor used IIR (Infinite Impulse response) Butherworth until 10 order, and compiled on a Graphic and Parametric Equalizer.Parametric Equalizer designed consists of 5 slider with the respective frequency range (20-140) Hz, (140-400) Hz, (400-2600) Hz, (2600 – 5200) Hz and (5200 – 10000) Hz, with a gain range from 0 to 2 times as well as the sampling frequency (Fs) up to 20 KHz.By optimizing application Fdatool at Matlab, the voice output of the EQ could befound z parameter polynomial. The results of the testing of the sound source has a single frequency 410 Hz, yields the equation of polynomials Z, H (z) is;the constant in the numerator has a regular rhythm, it can be shown that sources tested came from a single frequency.Keywords : Identify, Sound, Labview, Matlab, z PolynomialABSTRAKArtikel ini membahas pengenalan suara dengan Software Labview dan Matlab. Software Labview digunakan untuk merancang Equalizer digital (EQ processor ) dan Matlab dipakai untuk mengubah luaran EQ processor menjadi polinomial Z parameter. Kedua Software tersebut diinstal pada sebuah PC dengan perangkat masukan dari microphone condenser dan keluaran loud speaker.Perancangan EQ processor mengunakan IIR (Infinite Impulse Respon) Butherworth sampai 10 orde yang disusun pada Graphic dan Parametric Equalizer. Parametric Equalizer dirancang terdiri dari 5 slider dengan rentang frekuensi masing-masing , (20-140)Hz, (140-400) Hz, (400-2600)Hz, (2600 – 5200) Hz dan (5200 – 10000) Hz, dengan rentang gain dari 0 sampai 2 kali serta frekuensi sampling (Fs) sampai 20 KHz.Dengan mengoptimalkan aplikasi Fdatool pada Matlab, keluaran suara dari EQ Prosessor dapat diindentifikasi Z Polinomialnya. Hasil pengujian dari sumber suara yang memiliki frekuensi 410 Hz, menghasilkan persamaan Z polinomial sebesar , H(z)konstanta pada numerator memiliki ritme yang teratur ini dapat menunjukan bahwa sumber yang diuji berasal dari frekuensi tunggal. Kata Kunci: Indentifikasi, Suara, Labview, Matlab, Z Polinomial.
Alasan Utama Perusahaan Jasa Kontruksi Melakukan Investasi Teknologi Informasi
Authors: Maddeppungeng Andi 
Published: October 2023

Abstrak.
Pada era informasi ini perusahaan jasa konstruksi telah menyadari pentingnya peran teknologi informasi dalam menunjang proses bisnis konstruksi, yang mana pada saat ini diharuskan menunjukkan kualitas pekerjaan yang sesuai spesifikasi, baik teknis maupun administrasi.
Demikian pula efisiensi biaya, metode dan waktu pelaksanaan pekerjaan konstruksi sangat mewarnai persaingan, dalam bidang industri konstruksi yang trennya semakin menunjukkan peningkatan seiring dengan berjalannya waktu.
Disisi lain pemilik proyek konstruksi sangat ketat jadual penyerahan pekerjaan, karena bangunan tersebut sudah akan dimanfaatkan, utamanya jika bangunan tersebut diperuntukkan senbagai fasilitas umum.
Untuk menjawab permasalahan seperti yang dimaksud tadi maka perusahaan industri konstruksi melakukan investasi dalam bidang teknologi informasi, dengan harapan untuk memenuhi permintaan klien untuk melakukan pekerjaan teknik yang lebih efisien, pengelolaan progres pekerjaan, disamping mutu, waktu dan biaya pelaksanaan pekerjaan dari setiap tahapan pekerjaan yang harus dilaporkan tepat waktu.
Investasi teknologi informasi oleh perusahaan industri konstruksi harus diimbangi dengan penyiapan sumberdaya manusia perusahaan yang dapat mengoperasikan teknologi informasi tersebut sebagai sarana komunikasi antara klien, dan konsultan manajemen konstruksi, dalam masa pelaksanaan sampai penyerahan proyek.
Kata Kunci: Jasa konstruksi, investasi, teknologi informasi
SISTEM KENDALI SEKUENSIAL PERAJANG KETELA POHON
Authors: _ Syaprudin 
Published: October 2023

The sequential control system chopper cassava, using a sequential control system with control PLC (programmable logic controller). This control system is one alternative solution to overcome the deficiencies that exist at the time of the process cassava. chopping To build a sequential control system on cassava chopper is needed actuators, sensors and controllers, among others, push buttons, limit switches, PLC, pneumatic, solenoid valves, DC motors, compressors and other equipment that support.
Keywords: PLC, actuators.

ABSTRAK
Sistem kendali sekuensial perajang ketela pohon, menggunakan sistem kendali sekuensial dengan kontrol PLC ( programmable logic controller ) . Sistem kontrol ini merupakan salah satu alternatif pemecahan masalah untuk mengatasi kekurangan-kekurangan yang ada pada saat proses perajangan ketela pohon. Untuk membangun sistem kendali sekuensial pada perajang ketela pohon diperlukan aktuator , sensor dan kontroller antara lain push button, limit switch, PLC, pneumatik, selenoid valve, motor DC, kompresor dan perlengkapannya lainnya yang mendukung.
Kata kunci : PLC, Aktuator.
Teknik Pembuatan Baja Duplek pada Baja Karbon Rendah Sa 516-70 dengan Pelapisan Elektroda
Authors: Ruswanto Sidiq 
Published: October 2023

SA 516-70 is a low carbon steel which is used for making of boiler, high pressure tank and heat exchanger. Steel of SA 516-70 is applied for corrosion and wear resistance equipment. A weld surfacing can be used to overlay new components to their original dimensions. In this research two types of electrodes used are Sandvik 25 10 4 LR and Sandvik 29 8 2 LR. Weld surfacing process was used GTAW process using DCEP. The welding parameter used are as follow: welding current between 110 A to 112 A, welding voltage between 12 to 13 volt and travel speed between 173 to 191 mm/ minute. The weldments was then conducted hardness testing, metallographic examination, EDAX. Samples for hardness testing were taken from base metal and to the filler metal layer. EDAX testing was taken from metal to the outer layer layers. The results that the high hardness value of 356 Hv was Found on at layer 1 using sandvik electrode 29 8 2 LR . The base metal microstructure was reveled some ferrite and pearlite structure. The cromium dilution using sandvik electrode 29 8 2 LR was higher than that of sandvik electrode 25 10 4 LR. From all data investigations was concluded that the usage of sandvik electrode 29 8 2 LR is better performance than use of sandvik electrode 25 10 4 LR.
Key word : steel, welding and hardness.

Abstrak
SA 516-70 adalah baja karbon rendah yang digunakan sebagai material untuk pembuatan boiler, tangki bertekanan tinggi dan alat penukar panas (heat exchanger). Baja SA 516-70 diaplikasikan untuk peralatan yang membutuhkan sifat tahan terhadap korosi dan keausan. Dalam penelitian ini, proses pelapisan permukaan menggunakan dua jenis elektroda, yaitu Sandvik 25 10 4 LR dan Sandvik 29 8 2 LR. Proses pelapisan permukaan menggunakan proses GTAW (Gas Tungsten Arc Welding) dengan metode DCEP (). Parameter pengelasan yang digunakan adalah: arus listrik antara 110 A sampai 112 A, tegangan listrik antara 12 volt sampai 13 volt dan kecepatan pengelasan antara 173-191 mm/menit. Hasil lasan aHa nkemudian diuji kekerasannya dengan pengujian metalografi, EDAX (). Sampel untuk uji kekerasan diambil dari daerah perbatasan logam induk dan lasan. Pada pengujian EDAX sampel yang digunakan diambil dari lapisan lasa. Nilai kekerasan lasan yang menggunakan elektroda Sandvik 29 8 2 LR pada lapisan luar adalah 356Hv. Struktur mikro dari logam tersebut dibentuk dari ferit dan perlit. Kenaikan prosentase kromium ditunjukkan pada Sandvik elektrode 29 8 2 LR lebih tinggi dari 25 10 4 LR. Kesimpulan dari hasil penelitian ini bahwa Sandvik elektroda 29 8 2 LR kinerjanya yang lebih baik daripada Sandvik elektroda 25 10 4 LR.
Kata kunci: baja, pengelasan dan kekerasan.
Tratamentos não cirúrgico pós sequelas de traumas de face: Uma revisão de literatura
Authors: França Laura Carolina da Silva , Lucena Maria Alice Santos , Andrade Taysnara Ismaeley de , Cavalcante Mariana de Lyra Vasconcelos 
Published: October 2023

O trauma é definido como um conjunto de alterações funcionais e anatômicas decorrentes de impactos localizados e/ou generalizados. As sequelas estéticas causadas por eventos traumáticos podem ser tratadas no pós-operatório através de equipes multidisciplinares, que visam o restabelecimento das funções acometidas e a melhora da qualidade de vida do paciente. Os tratamentos não cirúrgicos, como a fisioterapia, a laserterapia, toxina botulínica e o ácido hialurônico, contribuem na evolução do tratamento, diminuindo as complicações e sequelas pós cirúrgicas tornando o prognóstico pós trauma superior e mais previsível. Desse modo o objetivo desse trabalho é demostrar por meio de uma revisão de literatura os tratamentos não cirúrgicos através da importância dessas intervenções nas funções motoras e psicológicas pós-trauma assim como os protocolos estabelecidos na literatura. Nos estudos analisados apresentaram efeitos benéficos na cicatrização, redução de edema, dor, e também nas deformidades faciais decorrentes de sequelas.
Detection of macrolide and fluoroquinolone resistance-associated 23S rRNA and parC mutations in Mycoplasma genitalium by nested real-time PCR
Authors: He Wenyin , Yuan Ying , Liang Junyu , Fan Xuejiao , Li Lei , Pan Xingfei 
Published: October 2023

BackgroundTraditional drug susceptibility testing cannot be performed in clinical laboratories due to the slow-growing characteristics of Mycoplasma genitalium when cultured in vitro. Sanger sequencing is the standard method for detecting drug resistance-associated mutations. It has been used in some laboratories to guide the choice of macrolide antibiotics for Mycoplasma genitalium infected patients. Furthermore, resistance to fluoroquinolone has become another emerging clinical challenge.ObjectiveSequencing analysis can detect unknown mutations, but it is time-consuming, requires professional analytical skills and the appropriate testing equipment. The main objective of this study was to establish a nested real-time PCR method for the simultaneous detection of 23S rRNA and parC genotypes in relation to the macrolide and fluoroquinolone resistance.Results105 MG-positive samples and 27 samples containing other pathogens were used for validation. The limit of the nested real-time PCR detection was 500 copies/reaction and there was no cross-reaction with Ureaplasma urealyticum, Mycoplasma hominis, Chlamydia trachomatis, Neisseria gonorrhoeae, Human papillomavirus, Herpes simplex virus, Candida albicans and Ureaplasma parvum, but the 23S rRNA assay cross-reacted with Mycoplasma pneumoniae. Compared with sequencing results, the sensitivity of 23S rRNA was 100% (95% CI; 93.3 -100), the specificity was 94.3% (95% CI; 79.4 - 99.0), the overall consistency was 98% (95% CI; 92.5 - 99.7) and kappa value was 0.96 (P &lt; 0.001); the sensitivity of parC was 100% (95% CI; 93.4 - 100), the specificity was 89.7% (95% CI; 71.5 - 97.3) and the overall consistency was 96.9% (95% CI; 90.7 - 99.2) with a kappa value of 0.92 (P &lt; 0.001).ConclusionsThe results of this sensitive and rapid alternative for identifying resistant genotypes of Mycoplasma genitalium are intuitive and easy to interpret, especially for mixed MG populations. Although the relevant 23S rRNA primers need further adjustment, this reliable method would provide an effective diagnostic tool for the selection of antibiotics in clinical practice.
Serum LH level prior to progestin administration is significant on pregnancy and live birth in programmed frozen-thawed embryo transfer cycles
Authors: Guler Ismail , Demirdag Erhan , Akdulum Munire F. C. , Polat Mert , Erdem Ahmet , Erdem Mehmet 
Published: October 2023

PurposeTo evaluate the impact of serum LH levels prior to progestin administration on the outcomes of programmed frozen-thawed embryo transfer (FET) cycles.MethodsRetrospective cohort study was conducted to compare the treatment outcomes between four groups based on the 25 percentiles of serum LH levels before progestin administration in 596 cycles of 518 patients undergoing artificial endometrial preparation protocols for FET. Primary outcome measures were ongoing and live birth rates. Secondary outcome measures were the pregnancy rates, clinical pregnancy rates, and pregnancy loss rates.ResultsThe trends in clinical pregnancy (CPR) and live birth rates (LBR) increased from the first to the fourth quartile (Q1 to Q4) of serum LH levels prior to progestin administration (37,0% to 48,3%, p = 0.042, and 22.6% to 39.5%, respectively, p = 0.003). Pregnancy loss rates (PLR) were higher in group Q1, although the difference was not statistically significant. Based on a multivariate logistic regression analysis, a low serum LH level before progestin initiation was found to be the most significant predictor associated with a negative effect on live birth (OR: 0,421, 95% CI 0,178 – 0,994, p=0,048). The day of estrogen initiation was significantly correlated with serum LH levels and quartiles of serum LH levels before progestin administration (r=0,200, p=0,015 and r=0,215, p=0,009, respectively).ConclusionThe serum LH level prior to progestin administration significantly affects pregnancy and live birth rates in patients undergoing an artificial endometrial preparation protocol for FET. LH monitoring should be incorporated into the follow-up, in addition to assessing endometrial thickness and morphology in artificial FET cycles.
A leap of faith: building the trust in human biobanks
Authors: Zhang Yi , Liao Bohua , Lei Ruipeng 
Published: October 2023

Background: Human biobanks are an essential resource for contemporary medical research, crucial in treating and preventing human diseases and improving health. Public trust in human biobanks is a vital social prerequisite for their continued operation and related research.Methods: Drawing on the “leap of faith” theory proposed by Georg Simmel and Guido Möllering, this paper first examines the relationship between public trust and human biobanks and the process through which such trust is established. Subsequently, based on the results of this analysis, targeted policy recommendations are put forward to consolidate or enhance public trust in human biobanks.Results: Public trust in human biobanks stems from certain “good reasons,” through which uncertainty and vulnerability are “suspended” by faith, leading to a leap toward the “land of expectations.” In this progress, the critical factors in building and enhancing public trust in human biobanks are the public’s propensity to trust, the inherent trustworthiness of human biobanks, and the security and interactivity of the trust environment.Conclusion: Public trust in human biobanks cannot be determined by any universal formula, as it is influenced by many factors, including intangible elements such as faith that defy empirical understanding. Nonetheless, public trust in human biobanks can be enhanced through measures such as fostering the public’s propensity to trust, enhancing the inherent trustworthiness of human biobanks, establishing structural safeguards for the trust environment through ethical norms, systems, and supervision, and promoting public participation.
Application of machine learning models in predicting insomnia severity: an integrative approach with constitution of traditional Chinese medicine
Authors: Li Shenguang , Zhu Po , Cai Guoying , Li Jing , Huang Tao , Tang Wenchao 
Published: October 2023

ObjectiveThis study sought to explore the utility of machine learning models in predicting insomnia severity based on Traditional Chinese Medicine (TCM) constitution classifications, with an aim to discuss the potential applications of such models in the treatment and prevention of insomnia.MethodsWe analyzed a dataset of 165 insomnia patients from the Shanghai Minhang District Integrated Traditional Chinese and Western Medicine Hospital. TCM constitution was assessed using a standardized Constitution in Chinese Medicine (CCM) scale. Sleep quality, or insomnia severity, was evaluated using the Spiegel Sleep Questionnaire (SSQ). Machine learning models, including Random Forest Classifier (RFC), Support Vector Classifier (SVC), and K-Nearest Neighbors (KNN), were utilized. These models were optimized using Grid Search algorithm and were trained and tested on stratified patient data, with the TCM constitution classifications serving as primary predictors.ResultsThe RFC outperformed others, achieving a weighted average accuracy, precision, recall, and F1-score of 0.91, 0.94, 0.92, and 0.92 respectively, it also effectively classified the severity of insomnia with high area under receiver operating characteristic curve (AUC-ROC) values. Feature importance analysis demonstrated the Damp-heat constitution as the most influential predictor, followed by Yang-deficiency, Qi-depression, Qi-deficiency, and Blood-stasis constitutions.ConclusionThe results demonstrate the potent utility of machine learning, specifically RFC, coupled with TCM constitution classifications in predicting insomnia severity. Notably, the constitution classifications such as Damp-heat and Yang-deficiency emerged as crucial determinants, emphasizing its potential in guiding targeted insomnia treatments. This approach enables the development of more personalized and efficient interventions, thereby enhancing patient outcomes.