bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tingkat Motivasi Siswa Dalam Mengikuti Program Ekstrakurikuler Panahan Tradisional di SMP IT Madina Boarding School Samarinda
Authors: Al Asari Moch Wail , Nanda Alfian Mahardhika  
Published: August 2024

Tujuan pada penelitian ini yaitu untuk mengetahui tingkat motivasi siswa dalam mengikuti program ekstrakurikuler panahan tradisional di SMP IT Madina Samarinda. Jenis penelitian ini yaitu deskriptif kuantitatif. Populasi pada penelitian ini yaitu siswa kelas VII, VIII dan IX yang mengikuti program ekstrakurikuler panahan tradisional di SMP IT Madina Samarinda berjumlah 40 siswa dan teknik pengambilan sampel dengan total sampling yaitu total populasi dijadikan sampel berjumlah 40 orang. Alat yang digunakan dalam penelitian ini adalah angket, kemudian data yang diperoleh di analisis dengan teknik statistik deskriptif yang dituangkan dalam bentuk presentase. Setelah data yang diperoleh di analisis maka diketahui motivasi siswa dalam mengikuti program ekstrakurikuler panahan tradisional di SMP IT Madina Samarinda dalam kategori sedang dengan pertimbangan rata-rata dari 40 responden sebesar 122,42. Motivasi siswa dalam mengikuti kegiatan ektrakurikuler panahan tradisional di SMP IT Madina Samarinda kategori sangat tinggi 0%, tinggi 40% sebanyak 16 siswa, sedang 33% sebanyak 13 siswa, rendah 13% sebanyak 5 siswa, dan sangat rendah 15% sebanyak 6 siswa.
Interval Training dan Circuit Training Untuk Meningkatkan Kapasitas Aerobik
Authors: Nuruhidin Ahmad , Pasha Erik Juntara  
Published: August 2024

Tujuan penelitian ini adalah untuk mengetahui pengaruh interval training dan circuit training terhadap daya tahan siswa ekstrakurikuler SMA Negeri 1 Pringsewu. Metode penelitian yang digunakan adalah eksperimen komparatif, dengan desain penelitian pre-test dan post-test,sampel berjumlah 30 siswa yang dibagi menjadi dua kelompok eksperimen dengan teknik ordinal pairing. Instrumen yang dilakukan dalam penelitian ini adalah tes lari dengan jarak 2,4 km (metode cooper). Hasil penelitian ini: 1) Ada pengaruh yang signifikan antara latihan interval terhadap daya tahan siswa SMA Negeri 1 Pringsewu dengan nilai t hitung 4.52 > 1.75 2) Ada pengaruh yang signifikan antara latihan circuit training terhadap daya tahan siswa SMA Negeri 1 Pringsewu dengan nilai t hitung 4.93 > 1.75. 3) Tidak ada perbedaan yang signifikan antara latihan interval training dan circuit terhadap daya tahan SMA Negeri 1 Pringsewu dengan nilai t hitung 0.007 < 1.75. Dari hasil penelitian ini dapat disimpulakan bahwa interval training dan circuit training sama sama mimiliki pengaruh yang signifikan terhadap daya tahan peserta ekstarkurikuler sepak bola SMA Negeri 1 Pringsewu.
Riwayat Pre eklampsia terhadap kejadian post partum
Authors: Umar Mareza , Kusuma Wardhani Psiari 
Published: August 2024

Perdarahan postpartum merupakan peristiwa kehilangan darah sebanyak 500 ml atau lebih. Penyebab langsung kematian ibu sebesar 90% terjadi pada saat persalinan dan segera setelah persalinan yang terdiri dari perdarahan (28%), eklamsi (24%) dan infeksi (11%), salah satu factor predisposisi terjadinya perdarahan post partum adalah riwayat pre-eklampsia. Angka kejadian perdarahan postpartum di RSIA Mutiara Hati Pringsewu terjadi peningkatan pada 2023 berjumlah 202 ibu. Tujuan penelitian ini untuk mengetahui hubungan riwayat preeklamsia dengan kejadian perdarahan postpartum pada ibu bersalin di RSIA Mutiara Hati Pringsewu. Penelitian ini menggunakan desain penelitian Analisis Deskriptif dengan pendekatan cross sectional. Populasi pada penelitian ini seluruh ibu dengan persalinan di RSIA Mutiara Hati Pringsewu yang tercatat di register. Sampel pada penelitian ini sebanyak 1022 ibu dengan teknik purposive sampling. Analisa data univariat dan bivariat menggunakan uji Chi square. Terdapat hubungan yg signifikan antara riwayat preeklampsia dengan kejadian perdarahan postpartum di RSIA Mutiara Hati Pringsewu dengan p value sebesar 0,001 dengan OR 4,271, hal ini berarti bahwa ibu yang memiliki riwayat pre-eklampsia berisiko mengalami perdarahan post partum sebesar 4,271 kali. Saran untuk petugas kesehatan agar dapat update pada pelatihan penatalaksaan kewatdaruratan maternal dan neonatal.
STUDI KASUS : PENATALAKSANAAN FISIOTERAPI PADA KONDISI CARPAL TUNNEL SYNDROME DEKSTRA DENGAN MODALITAS INFRARED (IR), ULTRASOUND (US) DAN TERAPI LATIHAN
Authors: Susanti Nur , Karima Khansa 
Published: August 2024

Latar Belakang : Carpal Tunnel Syndrome merupakan gangguan pada gerak tubuh bagian tangan yang menimbulkan rasa sakit, kesemutan atau kebas, dan mati rasa pada ibu jari, jari telunjuk, jari tengah dan sisi radial jari manis yang disebabkan oleh penyempitan terowongan carpal sehingga dapat terjadi penekanan pada saraf medianus yang terletak di pergelangan tangan. Problematika : Carpal Tunnel Syndrome mengalami nyeri, spasme, penurunan kekuatan otot, penurunan lingkup gerak sendi, dan penurunan aktivitas fungsional. Teknologi intervensi untuk mengatasi permasalahan menggunakan Infra Red (IR), Ultrasound (US), dan Terapi Latihan. Penelitian ini dilakukan di RSUD Kajen Kabupaten Pekalongan. Tujuan penelitian : mengetahui pengaruh management Fisioterapi terhadap Carpal Tunnel Syndrome dengan Infra Red (IR), Ultrasoound (US), dan Terapi Latihan. Metode penelitian : desain penelitian deskriptif analitik dengan rancangan studi kasus. Subyek penelitian ini adalah pasien dengan kondisi Carpal Tunnel Syndrome. Metode pengumpulan data dan analisa data menggunakan metode interview autoanamnesis. Instrument penelitian terdiri dari VDS (Verbal Descriptor Scale), MMT (Manual Muscle Teste), Goneometer, WHDI (Wrist Hand Disability Index). Hasil : (1) Terdapat penurunan nyeri T1 = 3 menjadi T3 = 2, (2) Penurunan Spasme T1 = 1 menjadi T3 = 0, (3) Peningkatan Kekuatan otot M. Dorso Fleksor dan M. Radius Deviator pada T1 = 4 menjadi T3 = 5, (4) Peningkatan lingkup gerak sendi pada T1 = S = 40°-0°-45°, T = 10°-0°15° menjadi T3 = S = 50°-0°-55°, T = 15°-0°-25°, (5) Peningkatan aktivitas fungsional pada T1 = 20% menjadi T3 = 14%. Simpulan Penelitian ini bahwa intervensi fisioterapi dengan Infra Red (IR), Ultrasound (US), dan Terapi Latihan dapat mengurangi permasalahan yang timbul pada Carpal Tunnel Syndrome.
The Relation of Leadership and Communication to Work Climate and Its Effects on Employee Morale at National Civil Service Agency (BKN) Regional Office XII Pekanbaru
Authors: Fiona Merinta , Hendriani Susi , Efni Yulia 
Published: August 2024

The purpose of this study was to determine the relation of leadership, communication to work climate and its effect on employees morale in National Civil Agency(BKN) Regional XII Pekanbaru partialy or joinly.The population of this study were all employeesof the National Civil Service Agency (BKN) Regional Office XII Pekanbaru totaling 94 employees.But based on job analysis in 2015 the ideal number of employees of each regional office is 90 employees. How to determine the number of samples by using the census method, so the sample number are 90 employees. Data analysis using Partial Least Square (PLS).The result of this study indicate that leadership and communication have a significant effect part to employees morale, but leadership through work climate does not have a significant effect on employees morale, and communication through work climate also have a significant effect to employees morale at the National Civil Service Agency (BKN) Regional Office XII Pekanbaru.
Development of Dense and Low Oxide Titanium Coatings for PEMWE Application
Authors: Bobzin K. , Heinemann H. , Olesch E. , Radermacher K. 
Published: August 2024

Abstract
A key technology to minimize CO2-emissions is the production of hydrogen from water electrolysis. The proton exchange membrane water electrolysis (PEMWE) consists of a stacked system out of bipolar plates (BPP), porous transport layers (PTL) and a membrane electrode assembly (MEA). Research activities are ongoing to minimize material input, reduce costs and increase the performance. For example, the BPP on the anodic side of the stack is currently manufactured of bulk titanium and its substitution by a Ti-coated steel substrate is economically interesting. The main requirements for the BPP-coating are a high coating density, a low electrical resistance and a long lifetime in a harsh electrochemical environment. Coating application on substrates of s ≤ 0.5 mm thickness is conducted with three thermal spraying technologies: Cold Gas Spraying (CGS), High Velocity Air-Fuel (HVAF) spraying and High Velocity Oxy-Fuel (HVOF). Substrate preparation is examined as well. Coating development is conducted with regards to coating thickness, density and oxidation. The examination of coatings includes roughness analysis, structural and chemical analysis. The results allow an evaluation of the suitability of thermally sprayed Ti-coatings by the structural properties for the PEMWE application. Among the three tested processes, CGS is the most suitable for this type of application. The three chosen thermal spraying processes are examined for coating application on metal sheets in context of PEMWE for the first time.
Plasma-Spray Deposition of Na3Zr2Si2PO12 Electrolyte for High Performance all Solid-State Sodium-Ion Battery
Authors: Bu Xiao-Chen , Chen Nan , Luo Xiao-Tao , Li Chang-Jiu 
Published: August 2024

Abstract
All solid-state sodium-ion batteries (ASS-SIBs) have great potential for application to large-scale energy storage devices due to their safety advantages by avoiding flammable organics and the abundance of sodium. In this study, plasma spraying was used to deposit Na3Zr2Si2PO12 (NZSP) electrolyte for assembling high performance ASS-SIBs. NZSP electrolyte layers were deposited at different spray conditions using NZSP powders in different particle sizes. The factors influencing the microstructure and compositions of NZSP layers were examined by characterizing the compositions of splat and cross-sectional microstructures of the deposits. It was found that the preferential evaporation loss of Na and P elements occurs severely to result in a large composition deviation from initial powders and spray particle size is key factor which dominates their evaporation loss. The APS NZSP electrolytes present a dense microstructure with well bonded splats which is attributed to low melting point of NZSP. The apparent porosity of the as-sprayed NZSPs was lower than 3 %. The effect of annealing on the microstructure of APS NZSP was also investigated. The performance of typical APS NZSP was also evaluated by assembling an ASS-SIB battery with APS NaxCoO2 (NCO), Na3Zr2Si2PO12 (NZSP) and Li4Ti5O12 (LTO) as cathode, electrolyte and anode, respectively. Results showed that columnar-structured grains with a chemical inter-splat bonding were formed across the interfaces between electrodes and electrolyte. There is no evidence of inter-diffusion of zirconium, cobalt and silicon across the NCO/NZSP interface. With the preliminary battery, the solid electrolyte exhibited an ionic conductivity of 1.21 × 10-4 S cm-1 at 200 oC. The SIB can operate at 2.5 V with a capacity of 10.5 mA h g-1 at current density of 37.4 μA cm-2.
Cold Spray of Ta-Ag Composites: Correlation Between Microstructure and Antibacterial Properties
Authors: Yu Pengfei , Perumal Gopinath , Genoud Katelyn J , Lupoi Rocco , Yin Shuo , O'Brien Fergal J , Brabazon Dermot 
Published: August 2024

Abstract
Tantalum and silver are recognized for their outstanding biocompatibility and antibacterial ability, respectively. However, owing to their distinct chemical and physical properties, synthesizing alloys and composites by using Ta and Ag presents a considerable challenge. In this study, Ta-Ag composites, exhibiting good antibacterial ability, were successfully produced by using a solid-state cold spray technique. Notably, intriguing correlations were observed between Ag microstructure and antibacterial ability. To unravel this correlation, a comprehensive experimental and simulation analyze were conducted. It is found that the volume ratio of Ta to Ag in the feedstock powder result in different deformation histories for Ag during the cold spray process. This, in turn, leads to the formation of distinctive Ag microstructures within Ta-Ag composites. The varied Ag microstructures results in different Ag dissolution ability and the formation of an insoluble AgCl layer exhibiting varying morphologies, when Ag exposed in a high chorine ion environment, like in human body fluids. This consequently influences the concentration of Ag ion and ultimately determines antibacterial ability. The study demonstrates that Ag release rate and the related antibacterial properties could be alternatively controlled by changing Ag contains or by creating different deposition process by adjusting CS parameter.
Investigations on Laser Cladding of Tin-Bronze on Steel
Authors: Freisse Hannes , Isère Emilie , Schudeleit Timo , Rippa Francesco , Keller Dominik 
Published: August 2024

Abstract
In Laser Cladding, a differentiation must be made between cladding by brazing and cladding by welding regarding process parameters and the resulting material properties. Results of investigations of bronze cladding on steel parts produced by Laser Deposition Brazing will be presented. This means that a strong metallurgical bond is realized by diffusion processes by Laser Deposition Brazing, but the steel base material is not molten. The coatings were characterized by hardness distribution measurements from the bronze cladding to the steel substrate, by measuring the size of the heat-affected zone and by porosity measurements. This combination of a steel substrate and a local bronze coating is used industrially in many tribological applications, such as plain bearings or hydraulic pumps etc. The bronze offers excellent tribological properties. In some cases, the bronze is used as a complete solid part. However, applying the bronze locally to a steel base body instead of using a complete solid bronze component, offers the advantage of the higher modulus of elasticity of the steel, which provides greater stability of shape with regard to possible elastic deformations as these coated parts are exposed to high mechanical loads, it is essential that a high coating quality is achieved by laser cladding and that the properties are extensively and purposefully characterized. The production technology, the characterization and the industrial applications of such bronze coated steel parts are presented and explained in this contribution.
Hot Corrosion Behavior of Yttria Stabilized Zirconia and La2Ce2C7 Based Dual Coatings
Authors: Pakseresht Amirhossein , Suyambulingam Ariharan , Sekar Anusha , Parchovianský Milan 
Published: August 2024

Abstract
One of the promising thermal barrier coatings (TBC) options for use above 1250 °C has been La2Ce2O7 (LC). This work explored the role of dual layered ceramic coatings in the top layer of the TBC system that has been prepared using atmospheric plasma spraying (APS). Above the NiCrAlY bond coat, 8 mol.% yttria stabilized zirconia (8YSZ) coating has been deposited with optimized APS parameters. Over the top layer (8YSZ), another layer that comprises composite with LC and 8 wt.% of 8YSZ (spray dried) has been deposited. Investigations into the hot-corrosion behavior of 8YSZ-LC based TBC subjected to Na2SO4+V2O5 salt at 950 °C for 4 hours. A porous layer made mostly of LaVO4, CeO2, CeO1.66 and YVO4 was developed on the LC+8wt.% YSZ layer after being subjected to a hot corrosion test in Na2SO4+V2O5 salt. Dissociation of LC and 8YSZ leads to the formation of new phases, such as CeO1.66, CeO2, LaVO4 and YVO4 as the corrosion by-products in the extreme environment. The findings indicated that delamination has occurred due to the phase transformation, cavities and cracks in the 8YSZ-LC based TBCs. The molten salt's hot corrosion mechanisms of the 8YSZ-LC based TBC are discussed in detail. Further, the potential use of 8YSZ-LC based dual coatings and scope for the future work have been derived from the current study.
Comparative Analysis of Mechanical Properties of Thermally Sprayed Cu and Zn Coatings on Fiber-Reinforced Plastic for Enhanced EMC Applications
Authors: Gebauer Jana , Scheitz Stefan , Rothe Christiane , Paul Alexander , Kanagarajah Pirabagini , Reif Manuel 
Published: August 2024

Abstract
The performance and, as a consequence, the application of functionalized fiber-reinforced plastic (FRP) are limited due to low adhesion strengths between the metal coating and the polymer-based substrate. Common pre-treatment methods, to successfully apply a metal coating by thermal spraying on commercial FRP, are mechanical blasting, etching or thermal treatment. Moreover, additional layers made of metal wire or sand have been integrated into the FRP surface. A promising material-sensitive pre-treatment method for FRP substrates is laser micro structuring. This method avoids uncontrolled damage of surface-near fibers and offers an increased interface area. Unique for pulsed laser structuring is the opportunity to achieve a clamping effect between the functional coating and the FRP by a trench-like structure.
Comprehensive Characterization of Annealed Coatings: Investigating Roughness and Wear Performance through Wear Testing and Analysis
Authors: Sheibanian Nazanin , Sesana Raffaella , Özbilen Sedat , Lupoi Rocco 
Published: August 2024

Abstract
Surface coatings play a pivotal role in enhancing mechanical and functional properties of various materials. High Entropy Alloy (HEA) annealed coatings have garnered significant interest due to their potential to improve wear resistance and overall durability. This research presents a comprehensive study focused on the characterization of HEA annealed coatings. It focuses on evaluating their roughness and wear performance. In this research, a systematic approach is adopted to assess the effects of annealing on coating surface properties. The investigation begins with the deposition of the Al 0.1-0.5 CoCrCuFeNi and MnCoCrCuFeNi coatings using a well-established cold spray (CS) technique, followed by a controlled annealing process. The coating surface roughness is analyzed using profilometry and microscopy techniques. This offers insights into the changes induced by annealing. The wear performance of the annealed coatings is evaluated through tribological tests.
An Investigation on the Effect of Deposition Technique on Micro-Structural and Mechanical Properties of WC-17Co Deposited Using Direct Energy Deposition (DED) and High-Velocity Oxygen Fuel (HVOF)
Authors: Grabowski Theresa , Azarmi Fardad , McDonnell Martin 
Published: August 2024

Abstract
Recently, laser deposition technologies have made significant advancements in their ability to manufacture high temperature metals and ceramics. One of these technologies, known as Direct Energy Deposition (DED), has the potential to deposit a wide range of materials from polymers to refractory materials, ceramics and functionally graded materials. This study evaluates major microstructural characteristics of WC-Co additively manufactured by DED technology. This material is commonly used for deposition of protective coatings due to its high hardness and excellent wear resistance. To this end, hardness and wear resistance of the DED processed samples were also investigated in this study. WC-Co coatings are generally deposited using various thermal spray technologies. However, it is speculated that DED deposited WC-Co could provide superior properties such as higher hardness and wear resistance. A DED manufactured WC-Co sample was examined by Optical Microscopy (OM), Scanning Electron Microscopy (SEM), Energy Dispersive Spectroscopy (EDS), and X-ray Diffraction (XRD). Those studies could provide information about important microstructural features, chemical compositions and phase distribution. All the tests were also repeated on High-Velocity Oxygen Fuel (HVOF) deposited WC-Co with the same composition. Both DED and HVOF produced WC-Co coatings experience decomposition of the carbides into compound phases; however, the DED deposited sample displays unique dendritic and eutectic structures that improve the hardness and wear properties compared to the homogenous HVOF coating. In addition, DED produced samples show higher hardness and relatively better wear resistance compared to the HVOF deposited ones. The obtained results could establish a relationship between microstructural characteristics with hardness and wear properties of both samples.
Studies of Particle Deformation and Microstructure Evolution Using High Strain Rate Particle Compression Test
Authors: Ju Na Gil , Hashizume Arata , Tang Qi , Hassani Mostafa , Ichikawa Yuji 
Published: August 2024

Abstract
The deformation behavior of particles plays a significant role in achieving adhesion during cold spray. The deformation behavior of the particles is associated with the fracture of the oxide layer and recrystallization, which are the key elements of the quality of cold spray. Studies of particle compression have been made to understand the deformation behavior of a particle. However, the deformation behavior of particle under controlled load and precise and high strain rate is yet to be studied. Here, we show the oxide layer fracture pattern and recrystallization regime under controlled load with a precise and high strain rate. We found that the cracks in the oxide layer initially appeared on the equator of the particle and propagated towards the edge of the top surface. Meanwhile, on the top surface, the circumferential crack was developed. On the other hand, the nanoindentation result showed that the compressed particle under a high strain rate has an unusual load-displacement behavior. Our results demonstrate that the oxide layer fracture behavior corresponds to the adhesion mechanism suggested by previous studies. Our study also revealed that recrystallization takes place within the particle under a high strain rate. We anticipate this finding to give a general insight into the deformation behavior of particles during cold spray. For instance, since the recrystallization behavior at a given strain rate can be predicted through this study, the resultant grain size and shape, which is associated with mechanical properties, can also be predicted. Furthermore, the amount of strain and strain rate to form optimal adhesion can be evaluated.
In Situ Spray Bead Acquisition and Analysis for Coating Thickness Predictions
Authors: Hudomalj Uroš , Aschwanden Ivo , Weiss Lukas , Nabavi Majid , Wegener Konrad 
Published: August 2024

Abstract
Coating thickness is considered to be one of the most important characteristics of thermal spray coatings. Therefore, it has long been the goal to be able to predict the coating thickness that ensues when coating an arbitrary part. A commonly applied approach is to determine the coating deposit based on a series of spray spot tests and use that for modeling the coating. Another option is to conduct spray bead tests, which better reflect the conditions during the coating. This work suggests a novel approach for in situ acquisition of the spray beads and their analysis. The acquisition is based on a 3D camera to scan the sample before and after depositing of a spray bead. The approach allows for their streamlined evaluation, enabling better understanding of spray bead formation and their modeling. The suggested analysis of spray beads includes uncertainty evaluation. This enables estimation of model prediction uncertainties which has been omitted in previous works on the topic. The analysis shows that a relative expanded uncertainty of 10% (at 95% level of confidence) can be expected for the coating thickness prediction for the simplest scenario of coating a flat sample sprayed perpendicularly at a constant spray distance and spray speed.