bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penerapan Lean Manufacturing untuk Meminimasi Waste Percetakan Box
Authors: Krisnanti Ella Dewi , Garside Annisa Kesy 
Published: October 2022

CV. Aneka Grafika merupakan perusahaan yang bergerak dalam bidang percetakan box. Berdasarkan hasil survey lapangan terdapat beberapa waste pada perusahaan tersebut diantaranya defect pada setiap tahapan proses, penumpukan produk setengah jadi di area kerja dan waktu perpindahan material yang lama. Tujuan dari penelitian ini adalah meminimasi waste yang terjadi di lantai produksi CV. Aneka Grafika dengan menerapkan lean manufacturing. Langkah penelitian meliputi identifikasi jenis waste kritis menggunakan metode waste assessment model, pemilihan value stream mapping tool dengan VALSAT, pemetaan aktivitas dan jenis defect dengan value stream mapping tool terpilih untuk menentukan detailed waste, identifikasi penyebab dari detailed waste menggunakan fishbone diagram, penentuan prioritas mode kegagalan dan penyebab kegagalan dengan menggunakan Failure Mode and Effect Analysis, dan pemberian usulan perbaikan berdasarkan mode kegagalan yang memiliki nilai risk priority number tertinggi. Hasil dari menggunakan waste assessment model didapatkan bahwa jenis waste kritis adalah adalah defect (18,02%), transportation (16,14%), dan unnecessary motion (15,06%) Beberapa usulan perbaikan yang direkomendasikan ke perusahaan untuk meminimasi waste adalah: penetapan Standard Operating Procedure (SOP) pada proses kontrol mesin cetak, relayout lantai produksi, dan pemasangan visual display.
Prevalensi trematoda gastrointestinal pada sapi di pasar ternak payakumbuh
Authors: Lefiana Delli , Kurnia Dihan , Sujatmiko Sujatmiko , Noor Prima Silvia , Zelpina Engki , Ardyes Rizki 
Published: October 2022

This study aims to determine the prevalence of trematoda infection in the gastrointestinal tract in cattle at the Payakumbuh Livestock Market. The research was conducted in August 2020. The method used was a survey using purposive sampling method. A total of 155 stool samples from the Paykumbuh Livestock Market were examined using floating and sedimentation method. Analyze the data in the form of qualitative descriptive analysis. The gastrointestinal flukes found were Fasciola sp and Paramphistomum sp. The most common fluke found was Fasciola sp. in cows is 16.15% and bulls is 12%. Infection with 1 species of fluke in 22.10% of cows and 16% of bulls. Infection with 2 species of fluke in 3.38% of cows and 4% of bulls. The prevalence of tapeworm infection in the 0-2 years old group was 23.61% and the >2 year old group was 20.48%.
Korelasi antara jenis pakan komersial dengan jenis kristal pada kasus kucing flutd (feline lower urinary tract disease) di rumah sakit hewan dinas peternakan Jawa Timur
Authors: Widyawati Ratna , Palgunadi Bagus Uda , Kusuma Wardhani Lailia Dwi , Samjaya Dini Fadhilla 
Published: October 2022

Feline lower urinary tract disease (FLUTD) is a term used to describe various causes of lower urinary tract disorders in cats which include idiopathic, urolithiasis, urinary tract infections, anatomical and neurological disorders. Use of commercial feed is one of the causes of Flutd formation. This study was to determine the correlation between commercial feed types and crystal types in the case of FLUTD cats at the Animal Hospital of East Java Province. The sample is primary data obtained directly by collection of fresh urine and through interviews with animal owners. As many as 30 fresh urine samples were sedimented and then observed under a microscope. The results of observations of urine sedimentation with a microscope showed that 16 cats had crystals in their urine. The highest percentage of struvite crystals was 12 cats (40%). Meanwhile, in 14 cats (46.7%) no crystals were found in the urine. It is known that the sensitivity of the urine sedimentation test is 64% and the specificity is 97%. There are different types of crystals in commercial feed with the same brand. the same brand of commercial feed can produce different types of crystals. This is due to many other factors that trigger the formation of crystallization. The urine sedimentation test is very accurate to detect cases of FLUTD and crystals in the urine
Intensitas Penggunaan Smartphone dan Komunikasi Interpersonal Orangtua Dengan Anak Selama Belajar Daring
Authors: Iska Netti  
Published: October 2022

In the current situation of the Covid-19 pandemic, make student learning at home. This makes the use of smartphones in online learning activities more intense. As a result, parents need to be wise in determining the use of smartphones so that the intensity of their use does not negatively affect children when they are studying online at home, e.g. B. Make children negligent and postpone class or work. The aim of this study is to determine the intensity of smartphone use as a factor that influences interpersonal communication between parents and children. The study obtained the data from 80 respondents who had children who were currently in elementary school and who attended online schools during the pandemic in Bukitinggi city. The method used in this research is the indigenous science questions method using the Google form. The results of the study show that the intensity of smartphone use is a factor that influences interpersonal communication between parents and children. Implementing guidelines from parents to set a schedule for using smartphones can improve interpersonal communication between parents and children.
Pengaruh Tata Kelola Perusahaan yang Baik dan Tanggung Jawab Sosial Perusahaan terhadap Kinerja Keuangan
Authors: Yesica Yesica , Sitorus Tigor , Purwanto Edi 
Published: October 2022

<p class="default">Penelitian ini merupakan penelitian kuantitatif yang bertujuan untuk mengetahui pengaruh dari tata kelola perusahaan yang baik ( GCG ), tanggung jawab sosial perusahaan ( TJSP ) terhadap kinerja keuangan perusahahaan dengan dimediasi manajemen laba yang menggunakan <em>the modified jones model </em>( 1995 ) pada perusahaan-perusahaan yang terdaftar dalam indeks LQ45 tahun 2018. Permasalahan penelitian yang diajukan merujuk kepada beberapa penelitian terdahulu dan adanya <em>research gap </em>dari penelitan terdahulu. Tujuh hipotesis telah dirumuskan dan sebuah model telah dikembangkan untuk menjawab masalah penelitian ini. Jenis data yang digunakan adalah data sekunder yang diperoleh dari laporan tahunan dan laporan keuangan perusahaan yang diterbitkan oleh Bursa Efek Indonesia dan website masing-masing perusahaan. Pengambilan sampel dilakukan dengan teknik <em>purposive sampling </em>dimana jumlah sampel yang diuji dalam penelitian sebanyak 26 perusahaan. Alat analisa yang digunakan adalah Partial Least Square - Structural Equation Model (PLS-SEM) pada program SmartPLS 3.0. Hasil penelitian menunjukkan bahwa kinerja keuangan perusahaan yang diukur melalui <em>return of asset </em>dan <em>tobins’Q </em>dipengaruhi oleh tata kelola perusahaan yang baik dengan sifat korelasi positif.</p>
Negara Asal sebagai Determinan Persepsi Kualitas dan Peran Moderasi Etnosentrisme
Authors: Fauziyyah Salma , Suryaningsih Ika Barokah 
Published: October 2022

<p>Penelitian ini bertujuan untuk menguji pengaruh negara asal terhadap persepsi kualitas dengan etnosentrisme sebagai variabel moderasi. Penelitian ini merupakan penelitian konfirmatori dan eksplanatori. Populasi penelitian ini adalah keseluruhan konsumen produk sepatu di Kota Bandung, Indonesia dengan ukuran sampel sebanyak 125 responden. Analisis data dalam penelitian ini menggunakan metode Stuctural Equation Modelling (SEM) dengan model moderasi. Hasil penelitian menunjukkan bahwa dua hipotesis penelitian diterima. Interpretasi hasil penelitian menggambarkan bahwa terdapat pengaruh antara Negara Asal terhadap Persepsi Kualitas dan terdapat efek moderasi Etnosentrisme terhadap pengaruh Negara Asal terhadap Persepsi Kualitas oleh konsumen. Kesimpulan yang diperoleh dari penelitian ini adalah etnosentrisme dapat digunakan sebagai alat untuk mengurangi efek negatif negara asal terhadap persepsi kualitas oleh konsumen</p>
EVALUASI DAN OPTIMALISASI TEKNIK OPERASIONAL SAMPAH KECAMATAN AMEN KABUPATEN LEBONG
Authors: Setyadi Purwo , Utama Satria Putra , Uker Damres , Martono Agus , Romeida Atra 
Published: October 2022

Penelitian ini bertujuan untuk (1) mengetahui kondisi eksisting teknik operasional pengelolaan sampah Kecamatan Amen, meliputi tingkat pelayanan, daerah pelayanan, teknik operasional dimulai dari pewadahan, pengumpulan, pemindahan, pengangkutan hingga Pemrosesan akhir, dan jumlah serta jenis armada yang digunakan, dan (2) mengevaluasi kondisi eksisting dan merencanakan teknik operasional pengelolaan sampah Kecamatan Amen pengembangan untuk 10 tahun ke depan. Penelitian dilakukan di wilayah Kecamatan Amen. Identifikasi dan evaluasi kondisi eksisting teknik operasional pengelolaan sampah dilakukan dengan menghitung data timbulan dan komposisi atau karakteristik sampah Kecamatan Amen. Sedangkan perencanaan teknik operasional pengelolaan sampah pengembangan untuk 10 tahun ke depan yang dilakukan meliputi perencanaan peningkatan tingkat pelayanan dan sistem teknik operasional pengelolaan sampah dimulai dari sumber/pewadahan, pengangkutan, tempat sementara, pemindahan ke tempat pemrosesan akhir. Hasil penelitian menunjukkan bahwa teknik sampah di Kecamatan Amen belum sepenuhnya sesuai dengan SNI 19-2454-2002, dengan tingkat pelayanan sebesar 20%, dan jumlah pewadahan 150 buah, alat pengangkutan berupa motor roda tiga sebanyak satu buah, dan hanya memiliki satu buah TPS di Desa Sungai Gerong, selain itu terdapat 1 buah alat pemindah berupa dump truck dengan kapasitas 6 m3 yang dibawa ke TPA Air Kopras Kecamatan Pinang Belapis Kabupaten Lebong. Timbulan sampah rata-rata yang dihasilkan masyarakat Kecamatan Amen adalah 2,89 liter/orang/hari dengan tooal sampah 24,38 m3/hari. Direncakanakan dalam pengembangan teknik operasional sampah di tahun 2020 sudah melayani 100 %, dan pada akhir tahun perencanaan (Tahun 2030) dibutuhkan jumlah pewadahan sebanyak 777 buah, jumlah motor roda tiga sebanyak 21 buah, sedangkan untuk jumlah TPS sebanyak 6 buah, dan untuk dump truck hanya menambahkan 2 buah dari kondisi eksisting. Kata kunci: Kata Kunci : Evaluasi, Identifikasi, Teknik Operasional Sampah
Nondestructive Evaluation and Analyses of Thermal Spray Coatings: Latest Technology Progresses and Case Studies
Authors: Ma Xinqing , Ruggiero Peter 
Published: October 2022

Abstract
Nondestructive Evaluation and Testing (NDE&T) techniques have been played vital roles in property characterization, process development and quality control of various thermal spray coatings. Besides conventional NDE&T lab methods such as eddy current test (ECT) for thickness measurement and fluorescent penetrant inspection (FPI) for cracking detection, some latest NDE techniques have been developed, demonstrated and applied to evaluate and characterize thermal sprayed coatings recently. The improved and innovative NDE methods provide more capable and accurate measurement to inspect on surface morphology, 2D and 3D coating porosity, oxide content, interface debonding, as well as other types of coating features, defects or specific properties. In this work, some non-contact NDE techniques and their applications were investigated and discussed based on several case studies of thermal sprayed coatings. Laser confocal microscopy had been used for characterizing surface morphologies and roughness profiles of HVOF WC-based coatings with 2D and 3D mapping methods. In particular, thermal wave imaging and ultrasonic micro imaging methods were used to detect the suspicious existence of lateral coating separation within or at the MCrAlY coating-substrate interfaces. Laser dimension sensoring method exhibited the extended capability of in-situ coating thickening measurements on turbine blade and vane. The latest non-contact NDE techniques demonstrated their unique and strong capability for in-situ and ex-situ coating characterization, process and quality control and coating failure analysis.
Fatigue Crack Growth in Plasma Sprayed Refractory Materials
Authors: Kovarik Ondrej , Materna Ales , Siegl Jan , Cizek Jan , Klecka Jakub 
Published: October 2022

Abstract
Fatigue crack growth in self-standing plasma sprayed tungsten and molybdenum beams with artificially introduced notches subjected to pure bending was studied. Beams width, thickness and length was 4 mm, 3 mm and 32 mm respectively. Fatigue crack length was measured using the differential compliance method and fatigue crack growth rate was established as a function of stress intensity factor. Unusual crack opening under compressive loading part of the cycle was detected. Fractographic analysis revealed the respective crack formation mechanisms. At low crack propagation rates, the fatigue crack growth takes place by intergranular splat fracture and splat decohesion for Mo coating. In W coating, intergranular splat fracture and void interconnection formed the fatigue crack. Frequently, the crack deflected from the notch plane being attracted to stress concentrators formed by porosity. At higher values of the stress intensity factor, the splat intergranular cracking become more common and the crack propagated more perpendicularly to the specimen surface.
Microstructure Characterization of Feedstock Ti-6Al-4V Powders and Their Evolution During Cold Spray Deposition and After Heat Treatment
Authors: Bhattiprolu Venkata Satish , Crawford Grant A. 
Published: October 2022

Abstract
Different Ti-6Al-4V feedstock powders (i.e., plasma atomized, gas atomized and hydride de-hydride) and corresponding cold spray depositions were characterized using electron back scatter diffraction and X ray diffraction. In addition, a low temperature heat treatment was applied to the coatings and characterized using the above techniques to understand the microstructural evolution after annealing. XRD did not show BCC phase in the three powders and coatings. The axial ratio for all the powders and coatings were similar to what has been reported for Ti-6Al-4V. Atomized powders and hydride dehydride (HDH) powders were characterized by α' microstructure, and equiaxed α phase microstructure, respectively. Phase maps for HDH powders revealed β phase microstructure distributed around equiaxed α grains. Microstructural evolution during cold spray deposition resulted in the atomized coatings retaining as-received powder microstructure at particle interiors and formation of nanograins near the interface. On the other hand, HDH coatings were characterized by slightly deformed as-received powder microstructure with no evidence for nanograin formation. Higher average grain size of HDH powders resulted in the higher percentage of low angle grain boundaries observed after cold spray deposition. Subsequent heat treatment resulted in recovery, some recrystallization and grain growth for all the coatings. Nonetheless, the extent to which this took place was higher for atomized cold sprayed coatings.
Cold Spray Additive Manufacturing of Al/Diamond Composites Using Core-Shell-Structured Diamond
Authors: Yin Shuo , Lupoi Rocco , Chen Chaoyue 
Published: October 2022

Abstract
In this work, advanced Al/diamond wear-resistance composites were fabricated by solid-state cold spray additive manufacturing using core-shell-structured diamond powders. Based on the experimental results and thorough discussion, it is found that core-shell-structured diamond powders were much easier to deposit than pure Al by cold spray, showing great potentials as feedstock for cold spraying. The deposition mechanism of the Al/diamond composites were dominated by the true metallic bonding between Al matrix and Cu layer, which is different from other conventual cold sprayed metal matrix composites. Tensile tests indicated that the tensile strength of the Al/diamond composites can be higher than cold sprayed pure Al. In addition, the Al/diamond composites had super wear-resistance performance. The wear rate was reduced by 17.8 times for the N4-1 composite and by 37.5 times for the N1-1 composite as compared with cold sprayed Al/Al2O3 composite.
Thermal Stability of Thermophysical Properties of Multiphase Fe-Al Intermetallic/ Oxide Ceramics Coatings Deposited by Gas Detonation Spraying 307
Authors: Panas Andrzej J. , Senderowski Cezary , Fikus Bartosz , Wołczyński Waldemar 
Published: October 2022

Abstract
While depositing Fe-Al intermetallic powders applying a gas detonation spraying a certain coating structures containing oxide ceramics are created. These structures exhibit both extreme mechanical resistance and unusual thermophysical properties (TP) also. One of such property is relatively low thermal conductivity. A possible application as thermal barrier coatings needs precise determination of TP dependence on temperature and resistance of the coating structure to temperature exposition. At present study TPs were investigated for a coating produced from Fe-Al intermetallic powder in a course of complex measurements including DSC analyses, laser flash thermal diffusivity measurements, dilatometric studies complemented with microstructural analyses. The study resulted in full characterization of the investigated structure TPs: density, thermal expansivity, heat capacity and thermal conductivity. During thermal analyses interesting phenomena concerning thermal resistance to the temperature exposition of the investigated coating were revealed. The obtained results complement rather sparse literature data on TPs in that subject and contribute to better understanding of gas detonation spraying (GDS) process technology and intermetallic/oxide structures property understanding.
High Strain Rate Sensitivity of Ultra-High Molecular Weight Polyethylene and Its Consequence on Cold-Spray Deposition Behavior
Authors: Ravi Kesavan , Ogawa Kazuhiro , Deplancke Tiana , Lame Olivier , Cavaillé Jean-Yves 
Published: October 2022

Abstract
The cold spray deposition mechanism of Ultra-High Molecular Weight Polyethylene (UHMWPE) requires a detailed understanding of strain rate sensitivity of UHMWPE. The yield and flow in UHMWPE are complex and sophisticated compared to metals due to their dependency on time, temperature, strain, strain-rate and the history of the processing. In this research work, powder-sintered UHMWPE of 10.5 Mg/mol was subjected to various strain-rates ranging from 10-2 s-1 to 103 s-1 via low compression strain-rate testing and Split Hopkinson Pressure Bar testing (SHPB). The experimental true stress-strain curves in compression of a sintered UHMWPE at pre-yield, yield point, and post-yield were analyzed. The pre-yield and yield point region, 10.5 Mg/mol UHMWPE exhibited an increase in the tangent modulus and the yield stress with an increase in strain rate. Further, the post-yield phenomenon in UHMWPE shows no apparent post-yield softening and shows an increase in the strain hardening with an increase in the strain-rate. The curves at increasingly higher strain rates showed an increasingly pronounced bi-linearity to its flow behavior with the rate of hardening increasing above 10~15% strain. Under the domain tested, the strain rate dependence for UHMWPE can be depicted by a logarithmic fit.
Investigation of a Pulsed DC Arc Spray Process
Authors: Landgrebe Dirk , Brumm Stefan , Kunze Sven , Kimme Jonas , Weis Sebastian , Morgenschweis Jan 
Published: October 2022

Abstract
The modulated direct current of pulsed arcs can be used to influence heat input and drop size in a process reliable and reproducible manner. Modern power sources possess arc controls due to the development in the area of computer engineering, which enable thermal spraying with pulsed current due to their dynamics and efficiency. In order to use this technology in the area of arc spraying (AS), investigations are required on the process behavior depending on the electrical parameters. A plant prototype was available for this investigation. The experiments were conducted using a wire-shaped spraying consumable of an iron-base alloy with a diameter of 1.6 mm. Parameters relevant for the process such as background current Iground, pulsed current Ipulse, pulse duration tpulse etc. were varied and measured using appropriate measuring technology. The objective was to develop an understanding of the process and to determine suitable parameters. Using high speed imaging, the arc was monitored and the melting of the consumables was analyzed. The influence of the pulsed current on the coating was determined by evaluating the porosity and the oxidic phase fractions by using a light microscope. Furthermore, the particle sizes were determined. Layers generated with conventional processes served as a comparison. The investigations on pulsed AS were able to prove stable process characteristics and improved coating results compared to conventional AS.
High Temperature Corrosion Properties of Thermally Sprayed Ceramic Oxide Coatings
Authors: Fantozzi D. , Kiilakoski J. , Koivuluoto H. , Vuoristo P. , Uusitalo M. , Bolelli G. , Testa V. , Lusvarghi L. 
Published: October 2022

Abstract
Oxides are chemically stable and wear resistant materials. Because of these properties, they are often applied as protective coatings in harsh environments. However, their chemical and mechanical stability at high temperature in chlorine containing environments is uncharted. These conditions are present in waste-to-energy and biomass boilers in which the currently available metallic and metal matrix composite coatings provide unsatisfactory protection. To be effective in these conditions the coatings should be chemically inert, erosion resistant and act as environmental barriers. For this purpose, this research studies the corrosion behavior and microstructural features of HVOF and APS-sprayed Al2O3-, Cr2O3-, TiO2-based coatings. Their chemical stability was evaluated by high temperature corrosion testing of self-standing coatings under KCl salt deposit at 550, 650 and 720 °C for the duration of 72 h.
Modeling and Assessment of Dynamic Properties and Thermal History of Powder Particles Under Gas Detonation Spraying Conditions Using a Propane-Air Mixture
Authors: Fikus Bartosz , Panas Andrzej J. , Senderowski Cezary , Wołczyński Waldemar 
Published: October 2022

Abstract
The dynamic properties and thermal history of FeAl particles were estimated and assessed in this study. First, parameters of the detonation process for the investigated mixture were calculated using a thermochemical code. Next, the motion parameters and thermal history of the analyzed powder particles were assessed using computational fluid dynamics software and algorithms developed by the investigators. The appropriate models allowed for determination of melted volume (mass) fraction of a certain analyzed single particles that have diameters ranging from 10 to 160 μm. The results show that only the smallest particles melt under the investigated conditions. Moreover, the estimated radial distribution of the temperature inside the particles is almost homogeneous due to the relatively high FeAl thermal conductivity and relatively low thermal conductance of surface heat transfer. The calculated particle terminal velocity was compared to experimental data and to data from previous studies in the literature to determine the accordance of results among the data sets.