bluuebunny/crossref_metadata_2025 huggingface dataset:
The Location Selection Of A Bus Terminal Between Alternatives Through Analytic Hierarchy Process: The Case Of Isparta
Authors: ERDİNÇ Esra , KEPENEK Engin
Published: September 2022

Otogar alanları, kentler arası ulaşım ağının kent ile buluştuğu, diğer toplu taşıma ağları ile entegre, kullanıcı için optimum erişilebilirlik özelliklerine sahip yerlerde konumlanması gereken fonksiyonlardır. Yolcu toplama ve aktarma tesisleri olarak tanımlanan otogarlar, Türkiye kentlerinde ulaşım işlevlerinin yanı sıra konaklama, yeme-içme, alışveriş gibi birçok fonksiyonu barındıran alt merkez alanlarıdır. Çalışma alanı olarak seçilen Isparta ili, öğrenci ve askeri hizmet hareketliliğinin yoğun olduğu orta ölçekli bir Türk Kentidir. Yılın belli dönemlerinde yolcu trafiği yüksek olan Isparta için otogar alanı en önemli planlama araçlarından biridir. Isparta kenti için otogar alanının mevcut yerinden taşınması ve yeni yer seçimi kentin geleceği için uzun sürede gündemde olan bir sorunsal halini almıştır. Bu nedenle bilimsel nedenlere dayanan çözüm önerileri idareciler açısından konunun önemini arttırmaktadır. Analitik Hiyerarşi Yöntemi ile Isparta ili mekânsal gelişimi, arazi kullanım ve ulaşım yapısı, mevcut otogar alanı ile birlikte incelenmiş, yeni otogar alanı alternatifleri belirlenen yer seçim kriterleri doğrultusunda sınanmıştır.
Navigating the Covid 19 Turbulence in Higher Education: Evidence from Turkish Faculty Members
Authors: ÖRÜCÜ Deniz , KUTLUGÜN H. Elif
Published: September 2022

Covid19 was the first pandemic of the modern era to strike with such virulence. We sought to understand this recent phenomenon and contribute to the empirical findings on the expectations from HEI leadership and management in Turkey. Drawing on the Turbulence Theory, we explored how the academic staff experienced the initial phase of the pandemic in Turkey and how they perceived the HE leaders’ navigation of the crisis at the selected universities. Within qualitative phenomonology, data from semi-structured interviews with a convenient sample of 10 academic staff in five public and five private universities in Turkey, was analysed through content analysis. Findings highlighted the opportunities and challenges of the pandemic for the faculty at personal and organizational level in an intersectional pattern. Moreover, the ways HEI leaders navigated the crisis created binaries in the form of experience vs. inexperience and trust vs. distrust. The challenges derived from the rapid but ineffective decision-making processes and the heightened surveillance mechanisms over the academic staff; which in some cases resulted in lack of trust. Hence, the turbulence level was shaped by how the universities and their leaders addressed it. In such cases, practices of building trustworthy connections, more distributive forms of leadership and robust communication; which would help the leaders to navigate the turbulence at times of crises are significant. Further recommendations are provided for research, policy and practice.
A Case Study on University Dropout: Perspectives from Education Faculty Students and Academicians
Authors: YILMAZ Tahir , SARPKAYA Ruhi
Published: September 2022

This case study investigated the reasons for students dropping out of a university and the experiences associated with the dropout process of individuals who dropped out of the faculty of education in Turkey. We collected data from 10 individuals who dropped out and 8 academic staff members who worked in the same faculty of a state university in the Aegean region in Turkey between 2008 and 2018 using the criterion sampling technique. We collected data using semi-structured interview forms and conducted content analysis. The results revealed that pre-admission factors (I), which are the factors of guidance, personality, system, family, career, and city play decisive roles in the admission process of individuals. These factors can shape their intrinsic and extrinsic motivation before the faculty admission process. After admission, the university processes factors (II) such as psychological condition, academic condition, social condition, organizational situation, appointment factors, military service, family situation, and financial situation are determinant factors on individuals’ intrinsic and extrinsic motivations in their university experience. After the dropout decision, individuals either drop out of the system or change department/university. Findings point out that the reasons for and process of the dropout are interdependent and divergent. Recommendations for future investigations and practices are presented based on our findings.
Modeling of SO2 and CH4 Emission Distribution in the Area Mataloko Geothermal Power Plant, East Nusa Tenggara, Indonesia
Authors: Syam Sudirman
Published: September 2022

Mataloko geothermal system is in an active volcanic environment, including the Inerie active volcano, Ebulobo, and Inielika. The main contribution to its environmental impact relates to the presence of high CH4 level. On the other hand, the resulting SO2 emissions use to generate electrical energy. This study aimed to determine the distribution modeling of SO2 and CH4 in the Mataloko geothermal power plant (GPP) area, Ngada-Flores. Direct measurements and laboratory analysis used in this study. The results showed that the distance of the wells MT-4, MT-3 and MT-5, MT-1 and MT-2 to the levels of SO2 and CH4 had no significant relationship with p value > 0.05. The distribution model of SO2 and CH4 in gass-wells MT-4, MT-(3,5), and MT-(1,2) shows that the contour lines that are getting closer to the geothermal well area show that pollutants have accumulated in the area. Therefore, it is necessary to pay attention to the distance between the settlement and the location of the Mataloko GPP.
Will axolotls show us the secret of brain regeneration?
Authors: Le Tam-Tri
Published: September 2022

An axolotl can regenerate part of its brain that was removed.
Bukti Korespondensi artikel IJDNE: Effect of Hybrid Resources on Management Outcomes Micro-Hydro Power Plants in Remote Areas
Authors: Syam Sudirman
Published: September 2022

The effect of developing hybrid resources on the management outcomes of micro-hydropower plants in remote areas has been studied and analyzed. The hybrid resource is a combination of two energy sources, such as water and solar energy, that operate together in meeting the needs of electrical power in Ambava Village, Tinondo Sub-district, East-Kolaka Regency, Southeast Sulawesi Province. This study has used a management model describing the relationship and influence of latent variables and their manifestation variables. Here, Confirmatory Factor Analysis (CFA) based Common-Pool-Resources (CPR) is the proper method of testing the structural model used. The results show that the Critics-Ratio (CR) and Standard Loading Factor (SLF) have fulfilled the expected value. The direct influence of the variable exogenous hybrid resources to the endogenous variable outcome of 0.213 has fulfilled the Gold of Fit criteria.Then, the direct impact of the most dominant latent variable is the operating dimension of the resource. At the same time, the indirect effect on the manifest variable is the increase in electricity reserve. Furthermore, the most dominant indirect impact of the hybrid resources latent variable is the benefit and cost dimensions, while the most dominant manifest variable is people's welfare savings.
Differential expression of ITGB5 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published data (3, 4). We found significant differential expression of ITGB5, encoding integrin subunit beta 5, in the primary motor neurons of patients with ALS. ITGB5 was also differentially expressed in the skeletal muscle of patients with ALS. ITGB5 transcript was present at significantly higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.
Differential expression of TRAF3IP2 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published data (3, 4). We found significant differential expression of TRAF3IP2, encoding TRAF3 interacting protein 2, in the primary motor neurons of patients with ALS. TRAF3IP2 was also differentially expressed in the skeletal muscle of patients with ALS. TRAF3IP2 transcript was present at significantly higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.
Differential expression of PDLIM5 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published data (3, 4). We found significant differential expression of PDLIM5, encoding PDZ and LIM domain 5, in the motor neurons of patients with ALS. PDLIM5 was also differentially expressed in the induced pluripotent stem cell (iPSC)-derived motor neurons of patients with ALS. PDLIM5 transcript was present at significantly higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.
Software dan Aplikasi Digital Penunjang Evaluasi Pembelajaran
Authors: Azhar Muhammad , Rahmawati Marlina
Published: September 2022

Penelitian ini bertujuan untuk menginvestigasi dan mengeksplorasi software dan aplikasi digital penunjang evaluasi pembelajaran. Data penelitian ini adalah situs web dari sofware yang digunakan untuk evaluasi pembelajaran dan jurnal penelitian yang berkaitan dengan software yang bersangkutan. Hasil penelitian ini menunjukkan bahwa sofware atau aplikasi digital penunjang evaluasi pembelajaran adalah Edmodo, Quizziz, Google Form, Kahoot, Plickers, Thatquiz, Testmoz, Quizstar, dan Proprofs. Penggunaan aplikasi digital untuk evaluasi pembelajaran lebih efektif, evisien, murah, menyenangkan dan meningkatkan minat peserta didik.
Differential expression of AQP1 in amyotrophic lateral sclerosis.
Authors: Mamoor Shahan
Published: September 2022

Neurodegenerative diseases that affect the motor neurons, including amyotrophic lateral sclerosis (ALS), have little treatment options and are generally rapidly fatal (1, 2). We harnessed the power of unbiased, whole transcriptome differential gene expression analysis, utilizing primary patient cells and tissues to discover genes whose expression defines ALS using published data (3, 4). We found significant differential expression of AQP1, encoding aquaporin 1, in the primary motor neurons of patients with ALS. AQP1 was also differentially expressed in the skeletal muscle of patients with ALS. AQP1 transcript was present at higher levels in ALS patient motor neurons as compared to control motor neurons. These analyses will begin to define the transcriptional landscape of ALS.
Making peer review evidence-based: It’s time to open the "black box"
Authors: Dunleavy Daniel J.
Published: September 2022

Peer review serves an essential role in the cultivation, validation, and dissemination of social work knowledge and scholarship. Nevertheless, the current peer review system has many limitations. It is charged as being unreliable, biased, ineffective, and unaccountable, among numerous other issues. That said, peer review is still commonly viewed as the best possible system of knowledge governance, given the relevant alternatives. In this research note, I scrutinize this assumption. Although peer review can sometimes be effective, it is not therefore a rigorous or even dependable system. Indeed, the practice of peer review in social work is overwhelmingly closed and opaque, and assurances of its rigor are speculative at best. Given that social work research informs policies and practices that have real world consequences for clients and communities, it is imperative that our research – and its appraisal – be held to the strictest of standards. This includes our system(s) of peer review. After highlighting common criticisms of traditional peer review, I articulate a research agenda on “open peer review” which can reform how peer review is performed, provide feedback to editors and reviewers, and help make the process more rigorous, transparent, and evidence-based. Implications for social work education are explored and discussed.
Influence of macrophytes on stratification and dissolved oxygen dynamics in ponds
Authors: Albright Ellen , Ladwig Robert , Wilkinson Grace
Published: September 2022

1. Small waterbodies are sensitive to stressors such as nutrient enrichment and heatwaves. However, when present, macrophytes may mediate these compounding stressors through their influence on water column thermal structure. Canopy-forming macrophyte beds can induce thermal stratification, which may limit the depth and degree of water column warming during heatwaves.2. We leveraged an ecosystem experiment and hydrodynamic model to evaluate how macrophyte biomass, thermal structure, and dissolved oxygen (DO) responded to the interaction of episodic nutrient loading and periods of high temperatures in two shallow, temperate ponds (mean depth 0.8 m, maximum depth 2 m). We added nutrients to one pond, simulating storm-driven loading, while the other pond served as an unmanipulated reference. Following the first nutrient addition both ponds experienced a 5-day period of high surface water temperatures. 3. Submersed macrophytes in the nutrient addition pond began to senesce mid-summer, likely a result of phytoplankton shading from the nutrient addition and heat stress, while macrophytes in the reference pond followed expected seasonal patterns, senescing in early autumn. 4. We found that macrophytes structured the thermal environment in the ponds through vertical attenuation of turbulent kinetic energy and light. Macrophytes reduced the vertical extent of water column warming during the sustained heat event by 0.25-0.5 m and maintained cooler bottom temperatures (up to 2.5 °C cooler) throughout the summer, suggesting that macrophytes may buffer small waterbodies from heatwaves. Seasonal patterns in DO saturation also followed trends in macrophyte biomass; however, during the heat event, DO saturation fell sharply (declined by 22.4 to 50.4%) in both ponds and remained depressed through the remainder of the summer. 5. Synthesis: Our findings reveal that canopy-forming aquatic plant beds can buffer ponds from brief aquatic heat events but also that the plants themselves are sensitive to nutrient loading and temperature extremes. These results contribute to our mechanistic understanding of the effects of compound, extreme events in small waterbodies and the role aquatic plants can play in mediating these stressors. This understanding is necessary for adaptive management of small waterbodies such that these systems will continue to support freshwater biodiversity.
Model-agnostic unsupervised detection of bots in a Likert-type questionnaire
Authors: Ilagan Michael John , Falk Carl F.
Published: September 2022

To detect bots in online survey data, there is a wealth of literature on statistical detection using only responses to Likert-type items. There are two traditions in the literature. One tradition requires labeled data, forgoing strong model assumptions. The other tradition requires a measurement model, forgoing collection of labeled data. In the present article, we consider the problem where neither requirement is available, for an inventory that has the same number of Likert-type categories for all items. We propose a bot detection algorithm that is both model-agnostic and unsupervised. Our proposed algorithm involves a permutation test with leave-one-out calculations of outlier statistics. For each respondent, it outputs a p-value for the null hypothesis that the respondent is a bot. Such an algorithm offers nominal sensitivity calibration that is robust to the bot response distribution. In a simulation study, we found our proposed algorithm to improve upon naive alternatives in terms of 95% sensitivity calibration and, in many scenarios, in terms of classification accuracy.
Tuberculose ocular num Profissional de Saúde
Authors: Vilas Boas Juliana , Brito Tiago , Sampaio Flora , Barbosa Conceição
Published: September 2022

ABSTRACT Introduction Tuberculosis is considered an Occupational Disease in Health Care Professionals and can have pulmonary manifestations or, more rarely, extrapulmonary manifestations, such as Ocular Tuberculosis, which can manifest in different ways. According to the Direção Geral de Saúde, Health Institutions should adopt early detection measures and considers that cases of active Tuberculosis in Health Care Professionals should be considered as an Occupational Disease. Case Report Technical Assistant, 57 years old, in the Physical Medicine and Hospital Rehabilitation service, with a history of recurrent episcleritis in the left eye for one year. She is observed by Ophthalmology and Internal Medicine. No other major complaints or background. She had a positive Mantoux test and a positive Interferon Gamma Release Assay test in a patient already medicated with oral and local corticosteroids, without improvement. It was assumed that it would be Ocular Tuberculosis, despite not being a typical presentation of the disease, but given the recurrence and treatment failure, it was decided to start treatment for Tuberculosis as active disease, with total remission of complaints. Given the occupational exposure, this case was reported as a suspicion of Occupational Illness and she was removed from her workplace until treatment was completed. Discussion Tuberculosis is one of the most important Occupational Diseases in Health Professionals. As an extrapulmonary manifestation, ocular tuberculosis is rare, but it can have strong implications for the patient’s health. Contrary to what has been observed with other occupational infectious diseases, the incidence of Tuberculosis has been increasing, so it is recommended to screen the risk groups. If there is suspicion, the Occupational Physician must remove the worker from the workplace, notify and report the suspicion of occupational disease. Early diagnosis can be difficult, due to the diversity of presentation, and constitutes a considerable clinical challenge, being often a presumptive diagnosis and the basic principles of treatment for extrapulmonary tuberculosis are common to pulmonary tuberculosis. Conclusion Ocular Tuberculosis as a disease presentation is rare and in Health Care Professionals it is an Occupational Disease given the risk of exposure. Occupational Disease participation by Occupational Medicine took into account the workplace and the risks, showing us the importance of correctly analyzing the place and working conditions, as well as the screening, prevention and infection control measures. Keywords: Ocular Tuberculosis; Occupational disease; Biological risk; Healthcare professional, Occupacional Health, Occupational Medicine.
ANALISIS KOMPETENSI SOSIAL GURU BERDASARKAN SERTIFIKAT PENDIDIK
Authors: Islami Anisya , Hermita Neni , Alim Jesi Alexander
Published: September 2022

The research aims to know teachers’ social competences based on the educator certificate. The research method used in this study is a descriptive quantitative method. The data-collection technique used was a questionnaire technique. The data analysis technique used is a descriptive analysis. Teachers’ social competences based on educator certificates in general have a good category. This corresponds with teachers’ social competence indicators of being inclusive and objective, adapting to the assigned environment, effective communication and good manners in communication.
PENGARUH KEPEMIMPINAN KEPALA SEKOLAH DAN MOTIVASI KERJA GURU TERHADAP DISIPLIN KERJA GURU SD NEGERI SEKECAMATAN BANDAR SEI. KIJANG KABUPATEN PELALAWAN
Authors: Sumarti Sumarti , Gimin Gimin , Erni Erni
Published: September 2022

This study aims to (1) find out that the principal's leadership affects the teacher's work discipline, (2) work motivation affects the teacher's work discipline, (3) the principal's leadership and work motivation have a joint effect on teacher work discipline. The respondents to the study were teachers of State Elementary Schools in Bandar Sei Kijang District, Pelalawan Regency, totaling 176 people with a sample of 122. Data collection is carried out through the dissemination of questionnaires. The data analysis used is descriptive analysis, inferential statistical analysis. The reliability coefficient of the instrument is calculated using the cronbach alpha formula. The results showed that there was a positive and significant influence of the principal's leadership on teacher work discipline by 0.533, and there was a positive and significant influence of work motivation on teacher work discipline of 0.666. Meanwhile, together there is an influence of the principal's leadership and work motivation on teacher work discipline of 0.702.
PENGARUH ETOS KERJA DAN IKLIM ORGANISASI TERHADAP KINERJA GURU SEKOLAH DASAR NEGERI KECAMATAN SEI. KIJANG KABUPATEN PELALAWAN
Authors: Misroji Misroji , Saam Zulfan , Isjoni Isjoni
Published: September 2022

This study aims to (1) find out that work ethic affects teacher performance, (2) organizational climate affects teacher performance, (3) work ethic and organizational climate affect teacher performance together. The respondents to the study were teachers of State Elementary Schools in Sei Kijang Subdistrict, Pelalawan Regency, totaling 163 people with a sample of 116. Data collection is carried out through the dissemination of questionnaires. The data analysis used is descriptive analysis, inferential statistical analysis. The reliability coefficient of the instrument is calculated using the cronbach alpha formula. The results showed that there was a positive and significant influence of work ethic on teacher performance of 0.621, and there was a positive and significant influence of the organizational climate on teacher performance of 0.433. Meanwhile, together there is an influence of work ethic and organizational climate on teacher performance of 0.650.
PENGARUH KEPERCAYAAN DIRI DAN REWARD TERHADAP KINERJA GURU SD NEGERI KECAMATAN LANGGAM KABUPATEN PELALAWAN
Authors: Beti Selvina , Azhar Azhar , Kurnia Rita
Published: September 2022

This research aims to determine the influence of confidence and rewards on the performance of elementary school teachers in Langgam District, Pelalawan Regency, both simultaneously and partially. The population in this study was 269 people, while the study sample was 161 people. The data analysis used is regression analysis, regression coefficient, and determination coefficient. The results showed that in silmultan there was a negative influence of confidence (X1) and reward (X2) on teacher performance (Y) of 72.7%. While partial confidence (X1) negatively affects teacher performance (Y) by 48.5%, and reward (X2) negatively affects teacher performance by 4.5%. It can be concluded that confidence and reward (X2) together have a negative effect on the performance (Y) of elementary school teachers in Langgam District, Pelalawan Regency in a strong category.
Results of the chlorogenic acid content assessment and scientific name identification of collected Lonicera samples in Hai Duong and Ha Nam provinces
Authors:   National Insitute of Medicinal Materials, Tran Thi Lan , Nguyen Quynh Nga ,   National Insitute of Medicinal Materials, Nguyen Thi Phuong ,   National Insitute of Medicinal Materials, Nguyen Thi Huong ,   National Insitute of Medicinal Materials, Dang Van Hung ,   National Insitute of Medicinal Materials
Published: September 2022

A total of 6 Lonicera samples were collected in different ecological areas in Chi Linh town, Hai Duong province and Thanh Liem commune, Ha Nam province. The result of scientific name identification of 6 collected samples showed that 4 samples are Lonicera macrantha (D. Don) Spreng. species, 1 sample is L. confusaDC. species, and 1 sample is L.japonicaThunb. species. Chlorogenic acid contents of all collected samples are from 0.011 to 0.304%. Results also showed that the acid chlorogenic content of L.japonicaThunb. species is highest (0.304%), followed by L. confusaDC. species (0.055%). The chlorogenic acid contents of L. macrantha (D. Don) Spreng. are from 0.011-0.021%. These studies will help to identify Lonicera species currently in Hai Duong and Ha Nam provinces and select high-quality species (chlorogenic acid content) for plant production.
Environmental and disease monitoring in the northern aquaculture area
Authors:   Research Institute for Aquaculture No. 1, Nguyen Huu Nghia , Phan Trong Binh ,   Research Institute for Aquaculture No. 1, Nguyen Thi Hanh ,   Research Institute for Aquaculture No. 1, Nguyen Thi Minh Nguyet ,   Research Institute for Aquaculture No. 1, Truong Thi My Hanh ,   Research Institute for Aquaculture No. 1, Nguyen Duc Binh ,   Research Institute for Aquaculture No. 1, Pham Thai Giang ,   Research Institute for Aquaculture No. 1, Nguyen Thi Nguyen ,   Research Institute for Aquaculture No. 1, Le Thi May ,   Research Institute for Aquaculture No. 1, Pham Thi Thanh ,   Research Institute for Aquaculture No. 1
Published: September 2022

Aquaculture is facing many challenges related to diseases and environmental pollution. Environmental and disease monitoring in aquaculture is to help authorities in planning and management, and to provide technical measures to support farmers. The study was carried out from January to October 2020, including 13 sites of supply water of brackish water shrimp farming areas of Nam Dinh, Nghe An, Ha Tinh, Quang Binh, Quang Tri, and Thua Thien Hue; 11 sites of clam/mollusc farming areas of Thai Binh, Thanh Hoa, and Quang Ninh; 11 sites of cage aquaculture of Hoa Binh, Yen Bai, and Hai Duong, with 23 monitoring times of the inlet water for brackish shrimp, 7 monitoring times for tilapia and freshwater cage culture. Alkalinity, ammonia, nitrite, total Vibrio, and VpAHPND values in shrimp farming water were higher than Vietnam’s environmental standard, valued at 12.37, 25.08, 16.67, 3.68, and 0.67% respectively. Salinity, ammonia, nitrite values, and total Vibrio in the mollusc farming water were higher than Vietnam’s environmental standard, which were 23.38, 33.77, 32.50, and 3.9%, respectively. Chemical oxygen demand and nitrite in the tilapia and freshwater cage farming water were higher than Vietnam’s environmental standard, which were 29.87 and 22.08%, respectively. Timely recommendations and warnings helped farmers minimise the damage caused by environmental pollution and diseases.
Research on technical production of Trichoderma preparations for control of yellow leaf - root rot on citrus trees
Authors:   Regional Research and Development Institute, Ministry of Science and Technology, Nguyen Tien Dung , Nguyen Thi Thuy ,   School of Agriculture and Natural Resources, Vinh University, Cao Thi Thu Dung ,   School of Agriculture and Natural Resources, Vinh University, Quach Thi Hanh ,   Regional Research and Development Institute, Ministry of Science and Technology, Nguyen Thi Minh Trang ,   Regional Research and Development Institute, Ministry of Science and Technology, Nguyen Thi Thu Ha ,   Regional Research and Development Institute, Ministry of Science and Technology, Phan Le Nga ,   Regional Research and Development Institute, Ministry of Science and Technology, Tran Phu Thang ,   Regional Research and Development Institute, Ministry of Science and Technology, Truong Tuan Oanh ,   Regional Research and Development Institute, Ministry of Science and Technology, Nguyen Duc Thuan ,   Regional Research and Development Institute, Ministry of Science and Technology
Published: September 2022

It is necessary to study conditions biomass multiplication and production of microbial organic fertilizers from Trichoderma for citrus trees, to help improve soil and prevent Fusarium sp., Phytophthora sp. causes yellow leaf - root rot. This study used two very high resistance strains of Trichoderma fungi for culture, namely T.haz.22.QH and T.asp.11.TT. Cultures of Trichoderma in liquid medium with the composition of extract from 150 g bean sprouts + 30 g sugar + 1 g urea + 1 g KH2P04 + 0.5 g MgSO4achieved the highest biomass of 4.35±0.48 g/l after 1 day. Solid fermentation medium using simmered whole-grain rice substrate and 10% fungal juice were suitable for fast growth and spores 8.82x109 CFU/g and obtained fungal biomass after 5-6 days. Producing micro-organic fertilizers using 100% manure or 50% bagasse + 50% manure with 6-8 kg of Trichoderma and obtained faecal biomass after 60 days of incubation.
Sociocultural Information Gap in the Dive Tourism Industry: Evidence from Komodo National Park
Authors: Berto Agustinus Rusdianto , Murwani Endah
Published: September 2022

Through the perspective of partnership for Sustainable Development Goals (SDGs 17th), this study aims to identify and describe the information gaps among stakeholders of the dive tourism industry of Komodo National Park as one of the super-priority tourism destinations in Indonesia. Researchers studied documents, performed field observation, and conducted in-depth interviews with 20 stakeholders. Qualitative content analysis revealed several notable findings. First, the information gaps among stakeholders are generally linked to knowledge disparity about tourism-technical and local sociocultural issues. Sociocultural information, particularly on environment preservation issues, shows the tendency to predominate everyday discourse rather than tourism technical information. Second, the foreigner community appears to be better than local stakeholders at mastering the sociocultural information discourse, particularly in terms of collaboration on environment preservation information. Further studies are needed to examine the interaction among actors predominating the sociocultural information management and their strategies to collaborate in maximizing the role of Destination Management Organization-Destination Governance (DMO-DG).
Pengaruh Komunikasi Interpersonal, Kampanye Sosial Media dan Citra Organisasi terhadap Kepuasan Konsumen di Bea Cukai Surakarta
Authors: Sunardiyah Fina , Pawito Pawito , Isrun Naini Albert Muhammad
Published: September 2022

Komunikasi interpersonal merupakan teknik komunikasi kerap kali dipergunakan untuk memudahkan pelayanan kepada konsumen serta dapat meningkatkan citra organisasi sebuah organisasi. Komunikasi interpersonal masih dianggap kurang penting dalam pengelolaan organisasi, karena kurangnya pemahaman pimpinan atau SDM yang terdapat di dalamnya. Tujuan pembuatan riset ini ialah memastikan dampak dari upaya atau kontribusi Kantor Bea Cukai Surakarta melalui komunikasi interpersonal, kampanye media sosial terhadap kepuasan konsumen melalui citra organisasi sebagai variabel intervening. Metode penelitian ini ialah kuantitatif dengan perolehan data melalui 100 responden menggunakan purposive sampling. Data didapat melalui kuesioner. Analisis penelitian menggunakan smart PLS. Hasil Penelitian menyebutkan citra organisasi berpengaruh terhadap kepuasan konsumen dan citra organisasi mampu memediasi hubungan komunikasi interpersonal dan kampanye media sosial terhadap kepuasan konsumen. Kontribusi penelitian menunjukkan bahwa komunikasi interpersonal, kampanye media sosial berpengaruh terhadap kepuasan konsumen, komunikasi interpersonal dan kampanye media sosial berpengaruh terhadap citra organisasi. Substansi penelitian memberikan kontribusi kepada kantor bea cukai berupa komunikasi interpersonal dan citra organisasi serta kampanye sosial media akan memberikan dampak yang penting bagi keberhasilan lembaga dalam mencapai tujuannya untuk menertibkan pemungutan bea dan cukai. Kantor bea cukai diharapkan dapat memberikan sebuah kontribusi yang mampu untuk memajukan lembaga melalui komunikasi interpersonal, kampanye media sosial yang dimulai dari pihak internal organisasi.
Insulated Piston Fire Face for Diesel Engines
Authors: Tricoire A. , Kjellman B. , Wigren J. , Vanvolsem M. , Aixala L. , Serrano J.R.
Published: September 2022

Widely studied in the 1980s, the insulation of pistons in engines aimed at reducing the heat losses and thus increasing the indicated efficiency. However, those studies stopped in the beginning of the 1990s due to NOx emission legislation, and also due to acceptable oil prices. Nowadays, with the improvement of exhaust after treatment systems (Diesel Particulate Filter, Selective Catalytic Reduction, and Diesel Oxidation Catalyst) and engine technologies (Exhaust Gas Recirculation), there are more trade-offs for NOx reduction. Besides, the fast rise of the oil prices tends to come back to insulation technologies in order to save fuel. This paper deals with the realization of a 1 mm thick plasma sprayed thermal barrier coating with a graded transition between the topcoat and the bondcoat on top of a serial piston for heavy-duty truck engines (11L displacement – Exhaust Gas recirculation – Single Stage Turbocharger with Variable Geometry Turbine and intercooler). The effects of the insulated pistons on the engine performance are also discussed.
Increase in Graphite Carbon in Plasma-Sprayed Cast Iron Coatings Based on Flying Droplet Diagnostic
Authors: Tsunekawa Y. , Kozaki T. , Iwata K. , Okumiya M.
Published: September 2022

Cast iron coatings containing solid lubricant of graphite are an attractive candidate for wear resistant applications of an aluminum alloy substrate. It is difficult to generate a graphite structure in coatings sprayed with as-atomized cast iron powder which contains a few graphite owing to their high solidification rate. Although a graphite structure is remained in coatings sprayed with fully annealed cast iron powder, graphite carbon becomes lower than that in the annealed powder because of the in-flight oxidation and dissolution of graphite into molten iron. The present study is focused on an increase in graphite carbon through flying droplet diagnostic at a certain spray distance, that is, in-situ measurements of droplet temperature and velocity. Water-atomized cast iron powder which was annealed at 900°C for 3.6ks, was supplied as a spray material. The fully annealed powder was plasma-sprayed onto an aluminum alloy substrate, as well as carrying out flying droplet diagnostic. The amount of graphite carbon can be estimated by flying droplet temperature and velocity, which are controlled by spray parameters such as plasma gas flow rate and plasma current. It is confirmed that droplet velocity exhibits stronger influence on graphite carbon compared with droplet temperature. High velocity causes an increase in graphite carbon, so that it is possible to fabricate graphite-graded cast iron coatings with high amount at the surface and low at the interface.
A Microstructural Study of Cold Sprayed Cu Coatings on 2017 Al Alloy
Authors: Triantou K.I. , Sarafoglou Ch.I. , Pantelis D.I. , Christoulis D.K. , Guipont V. , Jeandin M. , Zaroulias A. , Vardavoulias M.
Published: September 2022

The aim of this study was to investigate the microstructure (including surface roughness, microstructure and microhardness) of cold sprayed copper coatings on 2017 Al alloy, before and after annealing at 350°C for 1h. It seemed that keeping constant the powder flow rate and increasing the gas pressure from 2.0 to 2.5 MPa, the surface roughness of the coating tended to decrease, while the thickness of the coating tended to increase. Also, it seemed that keeping constant the pressure and increasing the powder flow rate from 22 to 130 g/min, the surface roughness and the thickness of the coating tended to increase. The microstructural study of the coatings after etching revealed particle interfaces and in some cases grain boundaries. Twins were observed in some of the coatings. Negligible porosity, absence of cracks and good adhesion of the coatings to the substrate were observed. The microhardness of the coatings varied between 95 HV0.3 and 150 HV0.3 for the different employed cold sprayed conditions. After coatings’ annealing the microhardness of all the coatings (cold sprayed and HVOF sprayed) decreased. The aforementioned results were compared with those of HVOF coating.
Development of Coatings and the Influence of Industrial Gases on the Thermal Spray Process
Authors: Krömmer W. , Heinrich P.
Published: September 2022

Equipment engineering, materials, gases and know-how are integral to the smooth operation of any system. The user often focuses on the attributes of the individual systems, but it is only in conjunction with all their components that the merits of the process can be exploited to the full. Here, industrial gases serve as essential building blocks which positively affect the process in an endless variety of ways. The optimization of costs, extended lifetime of systems and tailoring of coating properties to suit specific applications are just some of these influencing variables. Gas producers test countless facilities and thermal spray systems in their own laboratories and are therefore always in a position to provide the right solution for existing and new applications.
Intelligent Gas Supply Systems for Thermal Spraying
Authors: Brune E. , Kroemmer W.
Published: September 2022

Long-term experience in handling and using individual thermal spray processes has led to the development of gas supply systems which guarantee a smooth operation at the highest level. Concrete examples will help to demonstrate the benefits and advantages such systems can offer the thermal spray user.
Effects of Plasma Spray Distance on Properties of Ni-Al Intermetallic Coating by Utilizing of Mechanically Alloyed Powders
Authors: Moshref Javadi M. , Edris H. , Salehi M.
Published: September 2022

In this research mechanically alloyed Ni-Al powders were used for production of plasma sprayed coatings and effect of spray distance on the phases, microstructure and hardness of the coatings are examined. Three types of Ni-Al powder were made by METCO, LobaChemi and mechanical alloying, were used for comparing coating properties. Coatings are examined by XRD, SEM, EDAX and microhardness measurements. However intermetallic phases were not found in mechanically alloyed powder, but coatings contained these phases. This shows that heat energy of plasma spray caused formation of NiAl phases during flying of particles to substrate or after reaching to substrate. Comparison of coatings properties indicated that mechanical alloying of powders caused improving mechanical properties and decreasing porosity percentage of coatings. Change of spray distance caused changing in phases, porosity percentage and microhardness of coatings. Best spray distance for spraying of the made powder determined as 11cm.
Development of Wear Resistant Ceramic Coatings by HFPD
Authors: Parco M. , Barykin G. , Fagoaga I. , Vaquero C.
Published: September 2022

The high frequency pulse detonation (HFPD) process has shown to be a cost effective spray technique for the deposition of highly dense and erosion resistant YSZ ceramic coatings. In comparison to the coatings produced by conventional APS, a significant improvement of the wear performance can be achieved by the HFPD process as result of the high coating compactness. This work deals with the deposition of different ZrO2 and Al2O3 based ceramic powders by the HFPD technique, for the development of highly dense and wear resistant ceramic layers. During this development, the gun configuration and the process parameters (gas flows, explosion frequency, spray distance and cinematic conditions) have been optimised to get the best deposition performance. The resulting coatings have been characterised in terms of the microstructure, the microhardness and the sliding wear performance under dry conditions. In comparison to the plasma sprayed coatings produced with equivalent process conditions, the coatings deposited with the HFPD process are significantly harder and their sliding wear resistance is two–three-fold higher for YSZ coatings and five-six-fold higher for Al2O3 coatings. Furthermore, the HFPD process is able to produce highly dense and hard functional coatings in one spray pass, suitable for wear protective applications.
Gas Permeability of Porous Plasma Sprayed Coatings
Authors: Wittmann-Ténèze K. , Pereira J.-M. , Tourenne P. , Caron N.
Published: September 2022

For different applications, it is on interest to understand the relationship between the microstructure and the transverse permeability of a plasma sprayed coating. In the SOFC field, for example, the electrodes are very often characterized in term of porosity, particularly when they are elaborated by sintering. This can’t be applied to thermally sprayed coatings because of their very singular microstructure, lamellar and isotropic, depending strongly on the initial material and plasma conditions. In this study, coatings were manufactured by plasma spraying using different spraying parameters, many proportion of a porous agent, metallic or ceramic powders and two particles size in order to obtain various microporous structure. Measurements of their permeation with the pressure drop method and their open porosity just as the observation of the morphology and the structure by optical microscopy were achieved. The different data show that the evolution of the transverse permeability with the open porosity follows the Kozeny-Carman equation. This result correlated with the microstructural observation highlights the relationship between the permeability and the physical properties of porous plasma sprayed layers.
Co-Deposited Ceramic/Polymer Coatings for Tailored Insulation
Authors: Gulizia S. , Jahedi M.Z.
Published: September 2022

The application of ceramic die coatings on tool steel dies in the casting industry has been common practice for many decades. The main function of these coatings is to provide a thermal barrier to prevent premature solidification during die filling, and protect the tool steel die from the effects of molten metal during casting with aluminium alloys. Although these coatings provide good insulation they are fragile and require on-going in-situ maintenance by machine operators. These inherent poor qualities makes the die casting process difficult to control and to maintain cast product quality because the solidification pattern and porosity changes and leads to increased cast product rejects. To overcome the limitations a novel die coat has been developed for the light metal casting industry utilising thermal spraying of co-deposited MgZrO2 and polymer particles. The coating is then thermally treated to reveal a fine network of porosity that has been found by heat transfer coefficient testing to enhance the thermal properties and overall coating durability during casting. This paper describes the porosity control system which was used to tailor the heat transfer coefficient of co-deposited MgZrO2 and polymer coatings and compare them with the heat transfer coefficient of commercially available die coats. The inherent porosity and the overall coating thickness were found to have a large effect on the heat transfer coefficient. Results of industrial trials are also presented and show that co-deposited MgZrO2 and polymer coatings provide considerable improvements to productivity and enhanced coating life in Gravity and Low Pressure Die casting of aluminium alloys.
Suspension HVOF Spraying of Reduced Temperature Solid Oxide Fuel Cell Electrolytes
Authors: Oberste Berghaus J. , Legoux J.-G. , Moreau C. , Hui R. , Decès-Petit C. , Qu W. , Yick S. , Wang Z. , Maric R. , Ghosh D.
Published: September 2022

Metal-supported solid oxide fuel cells (SOFC) composed of a Ce0.8Sm0.2O2-δ (SDC) electrolyte layer and Ni- Ce0.8Sm0.2O2-δ (Ni-SDC) cermet anode were fabricated by suspension thermal spraying on Hastelloy X substrates. The cathode, a Sm0.5Sr0.5CoO3 (SSCo)-SDC composite, was screen-printed and fired in-situ. The anode was produced by suspension plasma spraying (SPS) using an axial injection plasma torch. The SDC electrolyte was produced by high-velocity oxy-fuel (HVOF) spraying of liquid suspension feedstock, using propylene fuel (DJ- 2700). The emerging technology of HVOF suspension spraying was here explored to produce thin and low-porosity electrolytes in an effort to develop a cost-effective and scalable fabrication technique for high-performance, metal-supported SOFCs. In-flight particle temperature and velocity was measured for a number of different gun operating conditions and standoff distances and related to the resulting microstructures. At optimized conditions, this approach was found to limit material decomposition, enhance deposition efficiency and reduce defect density in the resulting coating, as compare to previous results reported with SPS. Produced button cells showed highly promising performance with a maximum power density (MPD) of 0.5 Wcm-2 at 600°C and above 0.9 Wcm-2 at 700°C, with humidified hydrogen as fuel and air as oxidant. The potential of this deposition technique to scale-up the substrate size to 50 X 50 mm was demonstrated.
Characterizations of Cold-Sprayed Nickel-Alumina Composite Coating with Relatively Large Nickel-Coated Alumina Powder
Authors: Li W.-Y. , Li J.L. , Zhang C. , Liao H. , Coddet C.
Published: September 2022

The previous studies indicate that the fabrication of metal matrix composites (MMCs) by cold spraying is effective and promising. When light materials, such as SiC and Al2O3, were used as reforcements, it is difficult to obtain a high volume fraction of hard phase in the composite just through the simple powder mixture. Therefore, in this study, a Ni-coated Al2O3 powder, which was produced through hydrothermal hydrogen reduction method, was employed aiming at increasing the volume fraction of ceramic particles in the deposited composite coating. It was found that a dense Ni-Al2O3 composite coating could be deposited with the Ni-coated Al2O3 powder under the present spray conditions. X-ray diffraction analysis indicated that the composite coating had the same phase structures as the feedstock. The volume fraction of Al2O3 in the composite was about 29±6%, which is less than that in the feedstock (nominal: 40-45%) due to the rebound of some Al2O3 particulates upon kinetic impacting. The microhardness of the composite coating was about 173±33Hv0.2.