bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of Interface Bonding on the Residual Stresses in Cold Sprayed Al-6061: A Numerical Investigation
Authors: Lin Enqiang , Chen Qiyong , Ozdemir Ozan C. , Müftü Sinan , Champagne Victor K. 
Published: October 2022

Abstract
A contact model that accounts for interfacial cohesion and thermal conduction is developed to investigate the influence of bonding on the final residual stresses build-up in cold spray. The residual stress evolution in the cold sprayed Al-6061 coating on an Al-6061 substrate is investigated via three-dimensional (3D) single-particle and multi-particle impact simulations. It is shown that the interface bonding mainly affects the local residual stress distribution near the interfaces. The residual stresses are largely due to the kinetic peening and bonding effects. The thermal cooling has negligible influence. In general, the peening effect introduces a compressive stress while the bonding effect results in a relaxation to this compressive stress. This work suggests that the interface bonding should be considered as one of the essential factors in numerical modeling of the residual stresses evolution in cold spray.
Chemical Composition Changes of Composite Abradable Powders During the Deposition Process
Authors: Yu Yueguang , Liu Jianming , Lu Xiaoliang , Zhang Deming , Cheng Xuying , General Beijing 
Published: October 2022

Abstract
Chemical composition differences between the feedstock powder and the final coating of a series of composite abradable coatings were investigated. Graphite filler material mass distributions in the coating, overspray powder and burned power is calculated. A preliminary mechanism of graphite loss during the deposition process is established. It is found that the graphite content in the coating is significantly lower than that in the feedstock powder. Over 70% graphite in the feedstock powder is lost during the deposition process. Melting and shrinkage of the nickel shell of the nickel cladded graphite particle as flying through the flame, which resulted in the exposure of the graphite core to the flame and substrate, is the main reason for graphite loss and chemical composition change between the feedstock powder and the final coating. A random manner of particle structure transformation in the flame and its reactions with the spray environment is concluded as an important reason for the poor process repeatability of abradable coatings.
Influence of Process Gas Composition on Laser Cladding Process Characteristics
Authors: Wank A. , Schmengler C. , Hitzek A. , Kroemmer W. , Runzka M. , Merten B. 
Published: October 2022

Abstract
The influence of process gas composition on characteristics of laser cladding processes is studied in detail at the example of a 60 HRC nickel based self fluxing alloy powder. Typically pure nitrogen, argon or helium are used as process gases in laser cladding processes. Besides mixtures of these gases also addition of hydrogen, carbon dioxide and oxygen are applied studying their influence on thermal emission, weld penetration depth and homogeneity, powder usage and crack formation. Use of identical composition of carrier gas and laser process gas is compared to use of different carrier and laser process gases. Oxygen addition increases thermal emission, but does not result in increased weld penetration depth or crack formation tendency. Thereby homogeneity of weld penetration is improved in comparison to use of pure argon. Also, maximum hardness of claddings is achieved when adding oxygen.
Electrical Properties of Dense Al2O3 Coatings Prepared by SPS Process
Authors: Ibe Hiroyuki , Masuda Takaya , Sato Kazuto , Kato Nobuaki 
Published: October 2022

Abstract
Al2O3 coatings obtained by the plasma spraying are applied for applications utilizing the electrical insulation properties of such electronics devise manufacturing equipment components. In recent years, it has been reported that Al2O3 coatings with excellent electrical properties can be obtained by suspension plasma spraying (SPS). From past studies, it is cleared that functional properties and characteristics of coating were strongly affected by SPS conditions. For example, ratio of metastable phase Al2O3 was much different by SPS conditions. On the other hand, functional properties were not correlated with coating properties on Al2O3 SPS coating. It is obvious that detailed understanding of phenomenon is necessary to advance Al2O3 coating technology. In this study, several SPS factors such as in-flight particle property, splat property and coating property were investigated in order to understand SPS phenomenon.
Neutron Diffraction Residual Stress Measurements in Suspension HVOF Sprayed Al2O3 and YSZ Coatings
Authors: Owoseni T. , Bai M. , Hussain T. , Faisal N. H. , Lee T.L. , Kelleher J. 
Published: October 2022

Abstract
Thermally sprayed coatings have residual stresses due to the processing techniques where the particles go through thermal softening / melting, high velocity impact and rapid solidification. The nature and magnitude of residual stresses in these coatings determine the bond strength and failure mechanisms. This investigation thus involves a non-destructive neutron diffraction residual stress evaluation of suspension high-velocity oxy-fuel (S-HVOF) thermal sprayed alumina and YSZ coatings onto 304 stainless steel substrates. SHVOF spray is a high deposition efficiency process to deposit coatings from sub-micron or nanometric feedstock particles. Neutron diffraction measurements were performed at the UK ISIS facility, using ENGIN-X pulsed neutron diffractometer to obtain through thickness residual stress profiles. The Z-scanning method was used to avoid pseudo-strains in the neutron diffraction measurements near the coating surface whereby the incident neutron beam/gauge volume was partially submerged and traversed vertically out of the horizontal coating surface. The residual stress in the alumina coating was compressive across the whole thickness while the stress changed from tensile to compressive in the YSZ coatings. The residual stress measurements were complemented by lab based X-ray diffraction residual stress measurement techniques. Depth sensing indention of the coatings were also performed to gain a comprehensive understanding of the stresses in SHVOF sprayed ceramic coatings.
An Economical Approach to Cold Gas Dynamic Spraying Using In-Line Nitrogen- Helium Blending
Authors: MacDonald D. , Rahmati S. , Jodoin B. , Birtch W. 
Published: October 2022

Abstract
The cold gas dynamic spraying process solves many issues with respect to the deposition and additive manufacturing of metals. Namely, it provides a reduced reactive environment, simplicity of operation, and high deposition rates. It is known that the deposition efficiency of the cold spray process can be substantially increased using helium instead of nitrogen as the process gas. However, the use of pure helium can be cost prohibitive in many situations and commercially available helium recovery systems constitute a major capital investment on top of the spray system and ancillary equipment. This work focuses on the development and use of a novel, inline gas mixing system, designed to provide a blend of nitrogen and helium at any ratio. Deposits produced with different gas ratios were investigated through particle velocity, deposition efficiency, porosity, and hardness. The experimental results show that helium, even in lower percentages, can have a significant effect on deposition efficiency and that helium percentage can be optimized to reduce the overall coating production costs. From the results, a cost model is presented which, when provided experimental values and user costs, can be used to identify the nitrogen-helium ratio that will produce the lowest overall coating cost.
Investigation Into the Suitability of HVOF Nickel Based Cermets in Marine Hydraulic Service Subject to Biofouling
Authors: Howse Hugo , Ang Andrew S.M. , Wade Scott A , Berndt Christopher C. , Leigh Matthew , Piola Richard 
Published: October 2022

Abstract
A study was conducted into the use of HVOF coatings on hydraulic cylinder rods in marine environments subject to both biofouling and corrosion. The study comprised a laboratory phase for candidate material selection and HVOF process optimisation. This was followed by long term field testing of the most promising candidates, which were subsequently assessed based on corrosion, adhesion, surface roughness and hydraulic sealing performance. Two candidates, nickel based WC cermet coatings, WC–10Ni5Cr and WC–18Hastelloy C, showed excellent results, and are considered as candidates for the application.
Analysis of Mechanical and Tribocorrosion Properties of Thermally Sprayed Nb2O5 Coatings
Authors: Lima Carlos R. C. , Belém Maria J. X. , Camargo Flávio 
Published: October 2022

Abstract
Niobium and its alloys have been used for several industrial applications including high strength low alloy steels (HSLA) in the automotive and aerospace industries, mainly because of being highly corrosion resistant in different media. Niobium pentoxide is an excellent option to reduce costs in repairing damages caused by corrosion, protection of industrial equipment or systems for being chemically inert to corrosive agents that cause severe corrosion and are normally present in refineries and other industrial environments. Whatever the application, mechanical properties of coatings define their effective durability and performance, mainly for tribocorrosion applications. In this work, these properties are studied and correlated for Nb2O5 coatings applied by Flame Spray onto steels. Salt Spray corrosion (ASTM B117), abrasive wear resistance (ASTM G65-16) and scanning electron microscopy (SEM) microstructural analysis allowed the evaluation of the coatings.
Thermal Aging Fatigue Behavior of Functionally Graded TBCs: Oxidation Failure
Authors: Yuan Kang , Yu Yueguang , Ji Xiaojuan , Peng Ru Lin 
Published: October 2022

Abstract
Functionally graded thermal barrier coatings (FG-TBCs) with a gradual composition change from the MCrAlY bond coat (BC) layer to the yttria stabilized zirconia (YSZ) TBC layer is one way to decrease the residual stresses at the BC/TBC interface during a thermal cycling process. At high temperatures, the oxidation resistance of TBCs is also important which would affect the cyclic life of the coatings. In this paper, two YSZ materials were used to make FG-TBCs and conventional duplex TBCs by applying air-plasma spray (APS) technique. The coated samples were thermal cycled with 24-hours heating at 1100 °C followed by air cooling. The results showed that the FG-TBCs performed earlier failure than the duplex ones. Microstructure study indicated that the poor oxidation resistance of the graded mixed layer was responsible for the coating failure. In addition, the influence of spraying parameters on the coating life was discussed.
KAJIAN KELAYAKAN PENGOLAHAN MEDIA TANAM ORGANIK PERUSAHAAN PERORANGAN “2 TIA AGRI” DI KALIMANTAN SELATAN
Authors: Husinsyah Husinsyah , Mahyudi Fitri 
Published: October 2022

This study aims to determine technically the implementation of organic growing media processing business on PO. 2 Tia Agri. To find out economically the large costs, revenues, profits and business feasibility of processing organic growing media on PO. 2 Tia Agri. In its implementation, the business of processing organic growing media on “PO. 2 Tia Agri” in Banyu Irang Village, Bati-Bati District, Tanah Laut Regency, South Kalimantan Province in general has been running well. Production activities consist of several main stages, namely material preparation, mixing all ingredients, fermentation process, packaging, and delivery. With a production capacity of 20 tons (20,000 kg) of organic growing media for 1 (one) production cycle with a selling price of Rp.1,000 per kg. The income obtained in one production of organic growing media processing business is an average of Rp. 20,000,000 and a total cost of Rp. 16,396,506,47 and the profit obtained in one production is Rp. 3,603,493.53. The RCR value of Organic Planting Media Processing Business is 1.22 so it is feasible to cultivate
The System of Sociocultural Adaptation of Foreign Students at Leading Russian Universities (On the Example of Azerbaijani and Chinese Students)
Authors: Ledеneva V. Yu. , Abdullaev R. , Guseynova L. 
Published: October 2022

The number of foreign students educating in Russian universities is increasing every year. With the growing number of such students, the issue of their adaptation becomes more re levant, because that adaptation also determines the success of education. The substantial role in this process falls to the share of universities and their educational system, which in the initial stages is aimed at accelerating the adaptation of foreign students to everyday life in Russia, also to provide high-quality and promising education.The article presents the results of a study conducted in order to investigate the features of sociocultural adaptation, the difficulties, which are faced by students during their education period and their expectations, coverage of the place and role of universities, therefore, and scientific and pedagogical staff. To achieve an accurate result, we conducted a survey of international students from the Republic of Azerbaijan and the People’s Republic of China studying at Russian universities. 107 students in total (45% Azerbaijani students and 55% Chinese students) from leading Moscow universities participated in the questionnaire-based survey, the age cohort of respondents ranged from 21 to 35 years. Analysis of the results of the survey made it possible to determine the main types of adaptation of students to identify objective and subjective factors of sociocultural adaptation, to compare the principal features of foreign students from Azerbaijan and China in order to understand the main problems of intercultural communication of students from different ethnic groups. The relevance and uniqueness of the study are based on cross-cultural differences between the studied groups, which made it possible to identify both principal and specific features, and their significant difference from Russian culture.The authors of the article concluded that the acceleration of the process of sociocultural adaptation is possible, first of all, through the study of the Russian language and pre-departure training in their homeland, which includes studying of Russian culture, history, traditions and specifics of intercultural communication. Based on the results of the study, the authors proposed recommendations for the formation of a system of measures aimed to optimize the processes of sociocultural adaptation, including well-organized training and teaching, as well as involvement of foreign students in the social activities of the university.
Captive breeding and larval rearing of the endemic ornamental fish Moustached Danio, Danio dangila (Hamilton, 1822) – First report
Authors: Bhosale Dr. Mangesh , Mugale Rohini R 
Published: October 2022

Moustached danio, _Danio dangila,_ is a potential ornamental fish of India but the stock of this endemic Cyprinid is declining in the wild due to environmental variation and anthropogenic activities. Hence, the present work on induced breeding and larval rearing was undertaken to conserve this species. During the investigation, live fish were brought from Assam (North-East Indian region) to ARTP, Chennai, Tamil Nadu. In experiment 1, trials to breed the species using the synthetic hormone WOVA-FH, since the species did not respond to breed in captivity, revealed the highest spawning (1002.50±52.6), fertilization (84.0±2.72%) and hatching rate (86.5±2.9%) after intraperitonial injection at 0.5 ml/kg for females and 0.3 ml/kg for males. In experiment 2, larval rearing in nursery raceways and FRP tanks at different stocking densities for 45 days showed that the RAS-based nursery raceways produced the highest survival (91.79±1.67%) and specific growth rate (0.13±0.001%/day) at 30 numbers/L stocking density. The present investigation standardized the breeding and larval rearing protocol in advanced aquaculture systems and can give significant implications on the conservation and seed production of the species.
The CGA Codon Decoding through Arg-tRNA^ICG Supply Governed by Tad2/Tad3 in Saccharomyces cerevisiae
Authors: Wada Miki , Ito Koichi 
Published: October 2022

The CGA codon is a rare codon in _Saccharomyces cerevisiae _and is known to be inefficiently decoded by wobble pairing with Arg-tRNAICG. Experimental consecutive CGA codons cause ribosome stalling to result in a reduction of the encoding protein product. In this study, an additional supply of Arg-tRNA(ACG) genes that produce decoding Arg-tRNAICG recovered the product level from the CGA12-luc reporter, revealing that the product reduction is essentially due to inefficient decoding and deficiency in the tRNA supply. The mature tRNAICG and the precursor tRNAACG ratios examined for cellular tRNA fraction determined that the tRNAICG ratio is maintained at less than 30%, and is responsive to the anticodon first adenosine deamination enzyme, Tad2/Tad3, expression level.
Developing Intercultural Competency in Public Health Study Abroad Program
Authors: Bano Sara , Xia Qing , Dirkx John 
Published: October 2022

In this study, we explored the notions of cultural learning from non-western perspectives by focusing on the experiences of Chinese undergraduate students from the field of Public Health in the United States of America. We used Weick’s (1995) Sensemaking theory to understand how Chinese undergraduate students made sense of their experiences of learning about other cultures in both personal and professional spaces. We applied a qualitative research design and used interviews, a focus group, and reflection papers for data collection. We found that Chinese undergraduate students focused on social behaviors and attitudes. They used comparison as a tool to make sense of new experiences. Their sensemaking process shifted from simple to complex concepts, and guided learning helped them understand complex social issues related to public health in the U.S. They did not consider learning related to public health knowledge, English language, or life skills as cultural learning.
A Conservação de Exsicatas em Herbários: Contribuição ao Manejo e Preservação
Authors: Monteiro S. S. , Siani A. C. 
Published: October 2022

Este artigo é parte do estudo apresentado pelo autor Sérgio S. Monteiro como monografia de conclusão do Curso de Especialização em Gestão da Inovação em Fitomedicamentos do NGBS/Coordenação de Estudos de Far-Manguinhos.A presente proposta desenvolve um estudo sobre os procedimentos de preservação e conservação de exsicatas em herbários, mapeando os pontos críticos suscetíveis à contaminação pelos agentes daninhos; principalmente os insetos xilófagos. Os métodos de controle de pragas, principalmente os controles químicos por repelentes, fungicidas e defensivos em geral, foram compilados na literatura. Paralelamente, um questionário dirigido foi elaborado e aplicado às curadorias de seis herbários nacionais com o objetivo de verificar os principais procedimentos rotineiros utilizados em cada etapa, desde o ato da coleta até os diversos estágios de montagem das exsicatas para posterior inclusão do material botânico no acervo. Como resultado, foi construído um fluxograma resumindo a seqüência das atividades envolvidas neste manejo onde foram pontuados os pontos críticos que exigem cuidados relacionados à desinfestação, visando conservar adequadamente o material vegetal. As principais técnicas empregadas na desinfestação são: a utilização de repelentes químicos de rotina (naftalina, cânfora, benzeno e outros materiais), técnicas de prevenção (resfriamento prévio ou oportuno e isolamento do material botânico) e a fumigação química periódica com produtos à base de fosfina ou dedetização ocasional. Conclui-se que a consistência e o rigor nos procedimentos vistos como parâmetros de qualidade nos processos administrativos, são fundamentais para a preservação e conservação dos acervos nos herbários. Isso minimiza a necessidade de tratamentos químicos e, portanto, os efeitos deletérios à saúde dos funcionários, usuários e ao ambiente, causados pela fumigação periódica. Por outro lado, contribui também para a diminuição nos custos envolvidos com o processo de desinfestação. Assim, os resultados deste estudo aconselham a adoção de procedimentos padronizados no manejo do material botânico durante todo o processo (da coleta ao tombamento da exsicata); como uma ferramenta efetiva para a conservação dos acervos dos herbários.
Upaya Peningkatan Pengetahuan tentang Perilaku Hidup Bersih dan Sehat Melalui Ceramah pada Remaja di Pondok Pesantren Al-Miftah Nanggulan Kulon Progo
Authors: Prihatin Eny Septi Wulandari Dwi , Wulandari Apri Nur 
Published: October 2022

ABSTRAK Pondok pesantren Al-Miftah belum pernah mendapatkan Pendidikan perilaku hidup bersih dan sehat (PHBS), baik secara individu maupun lingkungan di pondok pesantren. Perilaku hidup bersih dan sehat merupakan hal yang penting diterapkan di pesantren. Karena lingkungan pesantren yang tidak kondusif dalam hal PHBS akan sangat rentan terkena masalah kesehatan. Perilaku hidup bersih dan sehat adalah perilaku kesehatan yang dilakukan atas kesadaran sehingga dapat menolong dirinya sendiri di bidang kesehatan. memberikan pendidikan perilaku hidup bersih dan sehat di pondok pesantren. Pelaksanaan kegiatan pengabdian masyarakat ini adalah ceramah tentang perilaku hidup bersih dan sehat di lingkungan pondok pesantren Al-Miftah dengan jumlah 50 santriwan. Instrumen yang digunakan adalah kuesioner pengetahuan PHBS di Pondok pesantren. Uji statistik yang dilakukan paired samples t-test. Hasil uji statistik paired samples t-test menunjukkan nilai p-value 0,000 yang berarti ada pengaruh pendidikan kesehatan terhadap tingkat pengetahuan mengenai perilaku hidup bersih dan sehat (PHBS). Pengabdian masyarakat ini berjalan dengan lancar dengan hasil peningkatan pengetahuan individu tentang perilaku hidup bersih dan sehat di lingkungan pondok pesantren Al-Miftah. Kata Kunci: Pondok Pesantren, PHBS, Pendidikan Kesehatan ABSTRACT Al-Miftah Islamic boarding school has never received education on clean and healthy living behavior (PHBS), both individually and environmentally in islamic boarding schools. Clean and healthy living behaviors are important to be applied in Islamic boarding schools. Because the islamic boarding school environment that is not conducive in terms of PHBS will be very vulnerable to health problems. Clean and healthy living behaviors are health behaviors that are carried out on awareness so that they can help themselves in the health sector. provide education on clean and healthy living behaviors in Islamic boarding schools. The implementation of this community service activity is a lecture on clean and healthy living behaviors in the Al-Miftah Islamic boarding school environment with a total of 50 students. The instrument used is a PHBS knowledge questionnaire at the Islamic boarding school. Statistical tests carried out paired samples t-tests. The results of the paired samples t-test statistical test show p-value 0.000 which means that there is an influence of health education on the level of knowledge about clean and healthy living behaviors (PHBS). This community service went smoothly with the results of increasing individual knowledge about clean and healthy living behaviors in the Al-Miftah Islamic boarding school environment. Keywords: Islamic Boarding School, PHBS, Health Education