bluuebunny/crossref_metadata_2025 huggingface dataset:
Fabrication of liposome-chitosa N-ZnO nanohybrid integrated with Carissa Spinarum extract for antibacterial application
Authors:   , Rubaka Clarence
Published: October 2023

Innovative biomaterials provide a stimulating and adaptable platform for the implementation of new and more effective methods to prevent bacterial infection. Built on biomimetic inorganic hybrid material, Dual Nanohybrid Delivery System (DN-DS) has advantageous properties for biomedical applications, such as the delivery of herbal formulations for the treatment of bacterial infections. Using microwave assisted extraction (MAE), the polyphenols of Carissa spinarum were extracted. The Dual Nanohybrid Delivery System (LipCsP-ZnONPs)-CT was formed by combining LipCsP-Chitosan and ZnO-Chitosan, which were both generated using different methods of co-precipitation and ion gelation, respectively. A Zetasizer was used to characterize the nanosystems' size, zeta potential, and polydispersity index (PDI). A UV-visible spectrophotometer was utilized for the optical study, and a scanning electron microscope was employed to investigate at the surface morphology. The interaction of coated chitosan with liposomes and ZnONPs was evaluated using Fourier Transformation Infrared (FTIR) spectroscopy. Different kinetic models were fitted to the results of the encapsulation and release profiles of polyphenols in the liposome nanosystems to determine the mechanism of release. Antibacterial activity of the nanoformulations was assessed by an agar diffusion assayand the micro plate blue assay (MABA). The Zeta potential of LipCsP changed from -45.3 ± 0.78 to +34.43 ±1.36 due to chitosan coatings. Polyphenol-encapsulation efficiency was higher in LipCsP-Chitosan (81 ± 2.5%) than in LipCsP (66.11 ± 1.11%). Conversely, the size of LipCsP (176.17 ± 1.05 nm) increasedto 365.2 ± 0.70 nm. FTIR analysis revealed the interaction of the liposome with chitosan due to the disappearance of N-H primary amine. Interaction between chitosan and zinc oxide was revealed by the formation of new absorption peaks at 670 cm-1 and 465 cm-1 as observed in the FTIR analysis. (LipCsP-ZnONPs)-CT presented high bioaccessibility of polyphenols in the simulated gastric phase (82.14 ± 0.80%) than in simulated intestinal phase (71.60 ± 0.86%), a stable system for sustained release of polyphenols, and prominent antibacterial activity. (LipCsP-ZnONPs)-CT exhibited a relative inhibition zone diameter (RIZD) of 89.60 ± 1.32, significant high viability reduction (P˂0.05) against Klebsiella pneumoniae as compared to LipCsP-Chitosan and ZnO-chitosan. The nanohybrid systems (LipCsP-Chitosan and ZnO chitosan) exhibited synergistic effect against Klebsiella pneumoniae. This study successfully demonstrated the utility of the nanohybrid as a potential antibacterial agent against K. ii pneumoniae, therefore, the fabricated dual nano delivery system is an efficacy material for treatment of pneumococcal infections.
STRATEGI GURU PENDIDIKAN AGAMA ISLAM DALAM MEMBINA DAN MEMBENTUK AKHLAKUL KARIMAH SISWA ( STUDI ETNOGRAFI DI SEKOLAH MENENGAH PERTAMA NEGERI 2 DONOMULYO )
Authors: JIPI
Published: October 2023

Penelitian ini memfokuskan pada strategi Guru PAI dalam membina dan membentuk akhlakul karimah siswa di SMP Negeri 2 Donomulyo. Penelitian ini menggunakan jenis penelitian kualitatif dengan metode pendekatan etnografi. Teknik pengumpulan datanya yaitu dengan observasi, wawancara dan dokumentasi. Teknik analisis datanya menggunakan reduksi data, penyajian data dan verivikasi.

Adapun tujuan dari penelitian ini adalah untuk mengetahui strategi Guru PAI dalam membina dan membentuk akhlakul karimah siswa SMP N 02 Donomulyo. Sedangkan  kesimpulan dan hasil penelitian ini menunjukkan bahwa kondisi akhlak siswa di SMP Negeri 2 Donomulyo dalam bersikap, berperilaku, dan berbahasa secara umum sudah cukup baik. Strategi yang digunakan guru PAI dalam membentuk dan membina akhlak siswa di SMP Negeri 2 Donomulyo adalah dengan metode keteladanan dan pembiasaan, serta menyusun program kegiatan yang dapat membantu dalam pembinaan akhlakul karimah siswa.
Botanik Turizmi
Authors: Avşar Melahat
Published: October 2023

Doğanın ve yeşilin insana huzur verdiği, stresten uzaklaştırdığı ve rahatlattığı bilinmektedir. Günümüzde çevre ile ilgili korumanın, bilinçlenmenin ve duyarlılığın artan önemi, yoğun ve stresli çalışma koşulları, kalabalık ve gürültülü şehir hayatı gibi nedenler insanların doğaya olan ilgisini artırmaktadır. Artan bu ilgi doğrultusunda da özellikle doğa temelli turizm türleri önem kazanmaktadır. Botanik turizmi, özelliklerinden dolayı hem doğa temelli turizm türleri hem de özel ilgi turizmi içerisinde önemli bir yer tutmaktadır. Botanik turizminin biyoçeşitliliği korumada, bilinirliğini artırmada ve gelecek nesillere aktarılmasında önemli bir rolü vardır. Fakat çevreye ve doğaya dayalı bir turizm türü olduğu için sürdürülebilir bir şekilde geliştirilmesi oldukça önemlidir. Botanik turizminin gelişmesi içinde bu alanda uzman ve bitkiler konusunda yeterli eğitim düzeyine sahip rehberlerin olması, botanik park ve bahçelerin turizme kazandırılması, geliştirilmesi, tanıtım ve pazarlamasının yurt içinde ve yurt dışında iyi yapılması oldukça önemlidir.
Yapay Zeka ve Turizm: Akıllı Sistemler
Authors: Kurçer Doğu , Civelek Makbule
Published: October 2023

Yapay zeka teknolojisi, günümüzde geniş bir uygulama alanı bulunan ve giderek artan öneme sahip olan bir teknolojidir. Yapay zeka, son yıllarda aldığı yeni yatırımlar sayesinde geliştirilerek uygulama alanları genişletilmiş ve farklı sektörlerde de kullanılmaya başlamıştır. Bu bağlamda yapay zeka teknolojisi, sağlık, inşaat, pazarlama ve turizm gibi birçok farklı sektörde kullanılabilmektedir. Bunun yanı sıra, yapay zeka teknolojisi gündelik hayatta da önemli bir rol oynamaktadır. Özellikle sosyal medya mecraları, dizi, film video oyunları gibi eğlence sektörleri, yapay zeka teknolojisi sayesinde daha etkili hale gelmektedir. Bu kitap bölümünde, yapay zeka kavramı çeşitli yönleri ile kuramsal açıdan tartışılarak turizm işletmelerinde kullanılan yapay zeka tabanlı akıllı uygulamalar incelenmiştir. Çalışma turizm işletmelerinde halihazırda kullanılan akıllı sistemleri örneklerle irdeleyerek turizm işletmecilerine farklı bir bakış açısı sunmayı hedeflemektedir.
The Relationship between Leadership Culture and Cynicism in the Businesses of the Future
Authors: İnal İbrahim Haşim
Published: October 2023

Under the influence of globalization and technological developments, changes have started to occur in the way businesses do business and processes have started to become digitized. Accordingly, organizational cultures are also evolving from analog cultures to digital cultures. The role of leaders in the digital transformation process in enterprises is also becoming more important. On the one hand, leaders should be responsible for the most accurate execution of the digital transformation process, and on the other hand, they should contribute  employees to the understand and support this transformation.
In the enterprises of the future, leaders should have the ability to be agile, communication-oriented, have digital literacy, people-oriented, manage change and do strategic planning. This is an important element not only in terms of the digital transformation process, but also in terms of preventing negative feelings that employees may develop towards the business for reasons such as workload, negative organizational climate, uncertainty, and change process. The negative feelings and attitudes that employees create towards the business are called cynicism. Cynicism has become an important topic of organizational behavior and business management in recent years due to the consequences it affects. Leadership and organizational culture are important factors in terms of preventing cynicism. For this reason, it is important for enterprises to prevent cynicism in the process of preparing for the future in order to increase employee support and loyalty. In this book, the importance of leadership and the relationships between the concept of cynicism and the concept of leadership in the process of preparing enterprises for the future are discussed within the framework of organizational culture. The effect of the preferred leadership styles on cynicism depending on the culture of the organization has been evaluated and suggestions for the future in terms of business management have been included. It is thought that this book will make a positive contribution to the literature for academics, managers, human resources professionals and students who are trying to understand the relationship between leadership and cynicism.
Building employee commitment through organizational climate in the manufacturing industry
Authors: Nwabueze-Kelvin Edith Nkem , Aruoren E.E.
Published: October 2023

This study examined organizational climate and employees' commitment. To achieve the objectives of the study, three research hypotheses were formulated to guide the study. Relevant literature was reviewed anchoring on the Two-Factor Theory and Equity theory. This study adopted a survey research design. The research population in this study comprised 370 staff of Asaba Aluminum Nigeria Pic, Delta State. The researcher used the Taro Yamane formula to determine the sample size of 150 respondents. The questionnaire was the instrument used for data collection while the instrument was validated by two experts in measurement and evaluation. The instrument was administered by the researcher with the help of the supervisors in the establishment with a 100 percent retrieval rate. Data gathered was analyzed using the frequency and the percentage while the hypotheses were tested through Ordinary Least Square (OLS). The findings revealed that job autonomy has an impact on employee morale; leadership style influences employee productivity; there is a relationship between reward system and employee job satisfaction, working environment influences the behavior of the organization; role clarity affects employee commitment; career development has an impact on employee competency and that communication efficiency influences employee performance. The study recommends amongst others that the management of Asaba Aluminum Pic should be more responsive to the physical condition of the work environment such as seasoned tools, machines, and career development programs as this will enhance efficiency in production and increase the quantity of products.
Ensuring organizational conflict resolution through human relations in the banking sector
Authors: Oluwafemi Philo Onome , Kifordu A. Anthony
Published: October 2023

Increasing uncertainty and complexity in the operating environment of organizations provide fertile ground for the beginning of conflict in the workplace. This study was conducted to examine the effect of human relations in resolving conflicts in an organization using deposit money banks in Delta State as a case study. The study, anchored on the human relations theory, adopted the survey research design hence data were collected through the use of questionnaires as research instruments. The findings of the study indicate that human resources management style, employee job description, and alternative dispute resolution strategies all have positive effects on organizational conflict resolution in surveyed deposit money banks in Nigeria. The study therefore concludes that positive human relations is important in resolving conflicts in an organisation and recommends amongst others the need for management to adopt the use of alternative dispute resolution strategies to avoid the attendant costs and manhour lost inherent in litigations.
Controllability and stabilization of a nonlinear hierarchical age-structured competing system
Authors: He Ze-Rong , Zhou Nan
Published: October 2023

This article concerns the approximate controllability of a biological system, which is composed of two hierarchical age-structured competing species. Basing on a controllability result of linear system, we prove that the nonlinear system is approximately controllable by means of a fixed point theorem for multi-valued mappings. To fix a suitable control policy, we deal with an optimal control problem and established the existence of the unique optimal strategy. In addition, the stabilization problem of the system is also considered.

For more information see https://ejde.math.txstate.edu/Volumes/2020/58/abstr.html
Relapse in Substance Use Disorder and Its Relation to Stigma: An Outpatient Based Cross Sectional Study
Authors: Sonbol Hassan Mohammed , Arockiasamy Arockia Philip Raj , Amr Mostafa Abdel-Monem
Published: October 2023

Background: One of the most crucial but discouraging features of the outcome of substance use disorder is relapse. The factors predicting this event must be understood to be considered for future interventions.Aim: This study aimed to assess factors related to relapse and stigma among patients with substance use disorder.Methods: A sample of 53 relapsed patients were recruited from the outpatient clinic of the addiction unit at Mansoura university hospital. Tools of data collection: Structured questionnaires were utilized. It included 3 parts. Part I: to assess socio-demographic characteristics. Part 2: Questionnaire about factors related to relapse among substance use disorder patients. Part 3: the perceived stigma of substance abuse scale.Results: It was found that relapse dimensions represented from the greatest to the lowest mean score as the following: unpleasant emotions, craving, good feelings, disruption of relationship, physical pain, peer pressure, and family problems, which was estimated as the following; 12.81±3.52, 5.94±3.15, 4.36±2.38, 10.21±5.45, 14.23±4.19, 11.00±4.00, 4.21±1.47, 10.13±3.06. A statistically significant positive correlation between stigma score and (craving, loss of control, peer pressure, pleased emotions, non-pleased emotions, physical pain, and disturbed relationship) domains of relapse scale.Conclusion: It was concluded that perceived stigma of patients with substance use disorder was one of the risk factors predicting relapse in these patients, also there was a significant positive correlation between all dimensions of relapse and some socio-demographic and clinical characteristics such as single marital status, unemployment, in debt economic status, and previous admission.Recommendation: Developing future preventive programs for protection against factors related to relapse including stigma.
Flood Endangered Area Classification Using the K-Nearest Neighbour Algorithm
Authors: Apene Oghenevovwero Zion , Hampo JohnPaul A.C. , Ogeh Clement Omamode , Hussein Suleiman Usman
Published: October 2023

Preparing for the uncertainty of life is one aspect of the human existence that cannot be over emphasized. With the growth of technology especially the sophisticated nature of data mining and machine learning algorithms, these uncertainties can be predicted, planned and prepared for using existing variables and computer methodologies. The achievements and accomplishments of big data analytics over the past decade in diverse areas called for its implementation in meteorological and space data. Notably, enhancement of the proper management of life’s uncertainties when they eventually occur. This research work focuses on the classification of areas within the Nigerian Geographical territory that are prone to flood using the K-nearest neighbour Algorithm as a classifier. Data from Nigeria Meteorological Agency (NiMET) on seasonal rainfall prediction and temperature of different stations and cities for over three (3) years (2014-2017) was used as a dataset which was trained and classified with the k-Nearest Neighbour algorithm of machine learning. Results showed that some areas are prone to flood considering the historic data of both rainfall and temperature.
OAuth for Mendeley on Android: solved and a bug
Authors: Eve Martin Paul
Published: October 2023

Thanks to Clemens' comment on my last post, I have managed to track down the problems that I was having with OAuth for Mendeley on Android; it's all callback related. It seems that callbacks to any protocol except "http" are prohibited. For instance: A callback request to "http://www.martineve.com" will work. A null callback request ("out of bound"/"OOB") will work and display PIN. A callback request to "martineve-mendroid:///" will fail.
Live Q&A: Life after a PhD [Friday 15th April 2011, 13.00-16.00]
Authors: Eve Martin Paul
Published: October 2023

I am very pleased to report that I will be participating as a panelist on the forthcoming Live Q&A this Friday (15th April) on the Guardian Higher Education Network. I'm hoping this event will be an exciting opportunity to engage with and discuss the community's concerns as regards postgraduate prospects. In timely fashion, the THE has an article on this very topic in their latest issue.
Djiscography: a Django-based discography generator
Authors: Eve Martin Paul
Published: October 2023

This is a quick post to announce the first code drop of a project I worked on yesterday. It's called Djiscography and it generates nicely formatted javascript hide/show style discography information. It supports track listing, samples, multiple artists, releases and editions. A live version of the project can be found at: http://discography.2bitpie.net.
SSL Enabled
Authors: Eve Martin Paul
Published: October 2023

 Featured image credit: husky under a CC-BY-SA license.  Some will tell me this is overkill, but I believe that, in 2011, we should have the option to read whatever we like on the web without ISPs, WiFi hotspot providers and their ilk able to see what we do online. There's nothing of huge sensitivity on my blog, but that is no excuse: "nothing to hide, nothing to fear" cannot be allowed to parade at every turn as a rationale for snooping.
Mendeley for Android: screenshot of collection display
Authors: Eve Martin Paul
Published: October 2023

Here's a screenshot of today's milestone on Mendeley for Android; collection display running in the emulator: Mendeley for Android: screenshot of collection display was originally published by Martin Paul Eve at Martin Paul Eve on January 11, 2011.
The Botnet: Webs of Hegemony/Zombies Who Publish
Authors: Eve Martin Paul
Published: October 2023

Image credit: rodolphoreis; Licensed under Creative Commons Non-Commercial Share-alike To my great excitement, my initial proposal for the forthcoming book, Zombies in the Academy has been accepted! While it still has to undergo peer review and as such isn't guaranteed to be published, I'll certainly be doing my best to overcome that hurdle.
 If you are interested, you can read my full proposal.
What has social media ever done for me?
Authors: Eve Martin Paul
Published: October 2023

 This is a re-publication of a post originally written for the Vitae blog's Digital Researcher section, archived here for preservation purposes. Image credit: leezfield under a CC-BY-NC-SA license.  Much of the rubric surrounding social media is, to my mind, somewhat de-humanising.
David Foster Wallace's The Pale King: Bonnie Nadell and Michael Pietsch at Foyles
Authors: Eve Martin Paul
Published: October 2023

Last night I had the pleasure of attending an event at Foyles bookstore in London featuring David Foster Wallace's Literary Agent Bonnie Nadell and Editor Michael Pietsch. The evening was in honour of the UK launch of Wallace's posthumous publication,  The Pale King  which is current receiving rather favourable reviews.
On #PhDchat: Call for Collaboration/History, Overview, Themes and Response
Authors: Eve Martin Paul
Published: October 2023

 Featured image credit: Rain Rabbit under a CC-BY-NC license.  This is the first part of a collaborative writing effort initiated by @jennifermjones, @AndyCoverdale, @FlyGirlTwo and myself (@martin_eve) which aims to discuss, interrogate and critically reflect, from an immanent position, on various aspects of the postgraduate community falling under the Twitter hashtag, #PhDchat.
Problematic indexing in Paul Rabinow's edited Foucault volume, "Ethics"
Authors: Eve Martin Paul
Published: October 2023

Just a brief scholarly note for the benefit of anybody reading Foucault's "What is Enlightenment", contained in Paul Rabinow's edited volume, "Ethics" (volume I). The index is incomplete and does not properly cover this article within the collection.
Impact analysis of correlated and non-normal errors in nonparametric regression estimation: A simulation study
Authors: Khan Javaria Ahmad , Akbar Atif , Saleem Nasir , Junaid Muhammad
Published: October 2023

In nonparametric regression, the correlation of errors can have important consequences for the statistical properties of the estimators, but the focus is on the on the identification of the effect on Average Mean Squared Error (AMSE). This is performed by a Monte Carlo experiment where we use two types of correlation structures and examine them with different correlation points/levels and different error distributions with different sample sizes. We concluded that if errors are correlated, then the distribution of errors is important with correlation structures, but correlation points/levels have a less significant effect, comparatively. When errors are uniformly distributed, AMSE is the smallest, followed by any other distribution, and if errors follow the Laplace distribution, then AMSE is the largest, followed by other distributions. Laplace also has some alarming effects. More specifically, the kernel estimator is robust in the case of a simple correlation structure, and AMSEs attain their minimum when errors are uncorrelated.
Feasibility Study Of Using Tungsten Carbide Thermal Spray Powders For Binder Jetting Technology
Authors: Azurmendi N. , Lores A. , Agote I. , Fernandes C.M. , Figueiredo D.
Published: October 2023

Additive manufacturing of hard metals is gaining attention due to the possibility of fabricating complex shaped parts and new functional designs. Among all of them, Binder Jetting (BJ) appears to be one of the most promising technology due to its low-cost, fast manufacturing process that produces stress and crack-free parts with isotropic properties. In the present work, the feasibility of using hard metal thermal spray powders (WC-12%Co) for binder jetting technology has been studied. Properties of two different agglomerated and sintered powders (AMPERIT 519.059 from Höganäs and WOKA 3111FC from Oerlikon Metco) have been analysed and compared. In addition, physical, mechanical and microstructural properties (density, hardness) of the printed parts sintered in a sinter-hip-furnace at 1455°C and 30bars have been evaluated and compared. The obtained results demonstrated the feasibility of using this type of powders for binder jetting, obtaining near full density parts (>99%) with hardness values around 1320 HV and homogeneous fine-medium microstructure.
Additive Manufacturing Of Permanent Magnet Assisted Electric Motor Components
Authors: Lindroos T. , Pippuri-Mäkeläinen J. , Kinos T. , Antikainen A. , Riipinen T. , Metsä-Kortelainen S. , Manninen A. , Bertinetti A. , Odden J. O.
Published: October 2023

Green electrification is vital for the society’s decarbonization. This sets a strong pressure on manufacturers of electric machines to produce items of higher efficiency and, simultaneously, prepare oneself for forecasted supply risks of raw materials. Additive Manufacturing (AM) is seen as enabler to produce components for novel electric machine architectures with designs and performance unattainable with conventional manufacturing. In this study, a permanent magnet (PM) assisted synchronous reluctance motor based on laser powder bed fusion (L-PBF) AM is introduced. Production of soft magnetic powder tailored for L-PBF and optimization of process parameters and further post treatments to achieve good magnetic properties are shown. Characterized magnetic properties are used as input values for motor design where both performance and possibilities of L-PBF are used as design criteria. Permanent Magnet electric motor of the e-scoot is used as reference. The results show that optimized architectures provide high performance with lower PM content.
Large-scale Phase-field Simulations of Solid-State Sintering of Metallic Powders
Authors: Ivannikov Vladimir , Munch Peter , Kronbichler Martin , Ebel Thomas
Published: October 2023

In order to perform plausible predictive numerical simulations of solid-state sintering, it is essential to capture accurately both shrinkage and microstructure evolutions of a given material. Moreover, for the results to be meaningful and statistically relevant, one has to analyze packings containing hundreds and thousands of particles. In the current work we present a highly efficient phase-field based numerical model that is able to handle large-scale three-dimensional cases at the early and later stages of sintering. The approach is based on the classical phase-field model of Wang. Multiple novel algorithms are developed for its efficient numerical FEM implementation: fully distributed tracking of individual grains, graph colorization for minimization of the number of order parameters, problem specific preconditioners and Jacobian-free formalism. We demonstrate how the proposed model can be applied for convenient microstructure analysis by providing quantities that can be used for subsequent comparison with experiments.
μCT Non-destructive Testing Of Additively Manufactured 3Dobjects As Support For True Sustainability
Authors: Gatões Daniel , Cacho Luis , Vieira M.T.
Published: October 2023

Additive Manufacturing is an essential process for novel geometries. However, complex parts demand a new perspective in defects control and support for the modelling of mechanical behaviour to assess the applicability of the 3D object to the conditions of the application. Therefore, non-destructive testing is essential for the evaluation of the role of stochastic defects (size, shape, and homogeneous distribution) on the mechanical properties of AM 3D objects. In this study, a wide evaluation of μCT (micro-computed tomography) for two metallic additive manufacturing processes – material extrusion (indirect) and selective laser melting (direct) – is performed. The results are analysed concerning physical properties changes that occur in additive manufacturing per defect origin type. Comparison of mechanical properties with the results of modelling, having in mind the defect characteristics, led to conclude that μCT is a powerful tool for AM parameter optimisation and the improvement of process sustainability.
Gelcasting Of Nbc20ni Cemented Carbide
Authors: Rodrigues Daniel , Real Janasi Suzilene , Miranda Fábio , dos Santos Ortega Fernando
Published: October 2023

Gelcasting has been successfully used to produce high-performance sintered ceramic components, and large shrinkages during sintering at high temperatures are common for obtaining high-density parts, since very fine ceramic powders are used as raw material. The same approach can be applied for cemented carbides (hardmetals), and near net shaped parts can be produced using moulds and, if necessary, additional turning operations before sintering can be used. Fine niobium carbide, nickel and tungsten carbide powders were used to produce aqueous slurries, which were adjusted to mold samples to obtain sintered cemented carbides with homogeneous microstructure and with a good combination of hardness and toughness. The slurry stability was investigated mainly considering the loading of solids. The nature and amounts of monomers, dispersants and additives were also investigated. Samples and prototypes were sintered at high temperature in vacuum, and characteristics such as density, microstructure and hardness were evaluated.
Effects Of Feedstock Morphology And Composition On Binder Jetting Of 316L Stainless Steel: A Perspective On Circular Economy
Authors: Mariani Marco , Montipò Luigi , Lecis Nora
Published: October 2023

Binder jetting is a sinter-based technique that allows the production of application-oriented designs with a reduced consumption of raw materials. The employment of powders from scrap metal recycling would minimise the lifecycle impact of the process. In our work, gas atomised powders tailored for binder jetting are compared to a feedstock obtained by recycling of 316L waste. The morphological features of particles, especially sphericity and size distribution, are measured by granulometry and scanning electron microscopy. Printed components are studied at the green and sintered state to observe the influence of each feedstock and the comparative analyses on density and final microstructures (residual porosity, grain size and phases distribution) allows to determine which are the most beneficial properties of the powders. CALPHAD modelling highlights the feedstock chemical composition effects on densification mechanisms: Ni and C content are responsible for δ phase formation and solidus temperature, thus affecting diffusive processes during sintering.
Optimization Of Fatigue Strength Assessment In Hardmetals Using A Reduced Number Of Samples By Means Of Dixon And Mood Model
Authors: Serra Marc , García-Marro Fernando , Cinca Nuria , Llanes Luis
Published: October 2023

Hardmetals are composite materials comprising carbides embedded in a ductile metallic binder. This combination, with different relative amounts and sizes of ceramic particles, allows obtaining a wide variety of microstructural qualities with excellent mechanical and tribological properties. However, many of the applications in which these materials are used involve cyclic stresses, which often lead to premature failure of components and tools. Therefore, studying the fatigue strength of hardmetals is a topic of great practical interest. A commonly used method to estimate the fatigue strength of structural materials is the "staircase method". Results obtained are usually analyzed by the Dixon and Mood approach. Trying to reduce time and resources, this work analyzes the use of a modified staircase method, to optimize the methodology to both evaluate the fatigue resistance by using a reduced number of samples and improve the acquisition of statistical information on the reliability of the fatigue life.
Sustainability of a Novel Low-Cost Process for Making Spherical Titanium Alloy Powders for Additive Manufacturing
Authors: D. Lefler Hyrum , Gilmore Mari , Zak Fang Z.
Published: October 2023

Titanium (Ti) is often a preferred metal for its superior strength-to-weight ratio, corrosion resistance, bio-compatibility, and its high melting point. Despite these advantages, titanium’s high cost and high environmental burden have relegated its use almost exclusively to niche, high-dollar applications such as the aerospace and medical sectors. The rise of additive manufacturing has brought with it an increasing demand for low-cost and sustainable spherical Ti-6Al-4V (Ti64) metal powders. Current commercial spherical Ti64 powders are produced through melt atomization techniques, which are not suitable for recycling Ti scrap with high oxygen content, and thus are not adequate for achieving corporate and consumer sustainability goals. A novel technique for production of such powders from high oxygen Ti scraps has been developed using Hydrogen Assisted Metallothermic Reduction (HAMR) technology to minimize oxygen content. This approach has the potential to substantially decarbonize the global titanium metal industry.
A Fast Method To Evaluate The Fatigue Resistance Of Additive Manufacturing Metal Specimens
Authors: Bemani M. , Parareda S. , Casellas D. , Frómeta D. , Mateo A. , Das R. , Molotnikov A.
Published: October 2023

This work addresses the application of such a newly established rapid fatigue testing method to evaluate the fatigue resistance of a Ti6Al4V alloy manufactured by Selective Laser Melting (SLM). The evaluation of fatigue resistance requires expensive and time-consuming tests, which often limit the generation of fatigue data. This is especially relevant for Additive Manufacturing (AM) parts, in which many processing parameters, and their inherent anisotropy, influence fatigue resistance. Accelerated or more straightforward testing procedures would help to develop fatigue-optimized AM parts. Recently, a method based on damage mechanics has been successfully applied to evaluate the fatigue limit in a wide range of steel and aluminum alloy sheets. It gives a good estimation of the fatigue limit in less than one day using a conventional universal testing machine and digital image correlation techniques. A good agreement with the results obtained by the conventional fatigue method is found.
Effect Of Heat-Treatment Temperature On Mesoporous Copper Cobalt Oxide(Cuco2o4) For Supercapacitors
Authors: Gue Heo Sung , Seo Seok-Jun
Published: October 2023

Mesoporous CuCo2O4 is interesting material for electrodes of high-performance supercapacitors because of their high surface area, controlled porosity and excellent electrochemical properties. In this work, mesoporous CuCo2O4 powders were synthesized using inverse micelle method and analyzed by X-ray diffraction (XRD) and Brunauer-Emmett-Teller analysis (BET). After heat-treatment at 250˚C in oxygen atmosphere, the mesoporous CuCo2O4 powders exhibited high specific surface area of 104 m2/g with pore size of 9 nm. The mesoporous CuCo2O4 electrodes achieved maximum specific capacitance of 132 Fg-1 in 6M of KOH electrolyte. This superior electrochemical supercapacitor property is mainly due to increased surface area.
Effect Of Reducing Agent And Carbon Content On Particle Properties Of Tungsten Carbide Powder Manufactured Through The SHS Process
Authors: Lee Yongkwan , Sim JaeJin , Heo SungGue , Ju Oh Soong , Lee MiHye , Shin JaeHong , Seo Seok-Jun , Park KyoungTae
Published: October 2023

Tungsten carbide (WC) is the main raw material of cemented carbide (WC-Co) and is mainly used for cutting tools, wear-resistant tools, and impact-resistant tools because of its excellent high-temperature hardness and high strength. The properties of cemented carbide are greatly affected by the particle size of the tungsten carbide powder, and the development of particle size control technology of the tungsten carbide powder is being actively developed to improve the performance of the tool material. This study evaluated the characteristics according to the amount of reducing agent and carbon input to control the particle size of tungsten carbide powder. The phase composition and morphology evolution of synthesized powders has been examined by X-ray diffraction, scanning electron microscope, and particle size analyser. As a result, WC powder with a particle size of about 200 nm was manufactured under optimized experimental conditions through the control of the reducing agent and carbon content.
Analysis of Government Policies in Padang City in Food Waste Management at the Household Level
Authors: Rahman Defri , Elfindri Elfindri , Henmaidi Henmaidi , Rahman Hafiz
Published: October 2023

The waste management issue in the city of Padang, particularly the increasing accumulation of household waste, with the predominant composition being food waste, is the primary focus of this research. The research aims to investigate the policies and strategies implemented by the Padang municipal government in managing household food waste. The research method employed is qualitative, involving data collection through interviews, observations, and direct documentation. The research results indicate that the management of household food waste is still integrated within the broader framework of urban waste management. The absence of specific governance for household food waste results in a significant increase in the amount of food waste being disposed of directly in the Final Disposal Site (TPA). The study concludes that: 1) the management of household food waste is intertwined with urban waste management; 2) Specifically, the Padang city government has not yet implemented a program for managing household food waste; 3) The absence of governance for household food waste leads to a high volume of food waste being directly disposed of in the TPA; 4) Specifically, there is currently no program related to food waste reduction.
Profile of speech therapy in oncology and palliative care residency program at an oncology referral hospital
Authors: Brito de Leão Rômulo Evandro , Canindé do Rosário da Silva Araújo Francisca
Published: October 2023

Introduction: Hospital environments are among the different professional contexts in which speech therapists can work. Patients with cancer or at their final stage of life are eligible for speech therapy intervention. Based on this premise, a program called Residência Multiprofissional em Saúde was created focusing on Oncology-Palliative Care.Objective: This study aimed to analyze the assistance provided by speech therapists in the scope of a multiprofessional residency program at an oncology referral hospital.Methods: The documentary research was based on a retrospective qualitative-quantitative approach. A sample of 344 m dical records were analyzed using a form containing open and closed questions as part of the study.Results: All data were organized in spreadsheets and submitted to statistical treatment using the chisquared test and the G-test. Only 67 patients were evaluated by speech therapists, and among these only 16 underwent rehabilitation. Functional evaluation of swallowing was the most frequent evaluation method found in the analyzed medical records (9.30%), tactile-thermal-stimulation was the most used therapeutic method in speech therapy (2.03%), and most patients had no clinical evolution with speech therapy (1.74%).Discussion: It is possible to observe a variation in the types of evaluation performed, which makes the evaluation an even more subjective process, increasing the risks of diagnostic confusion. Health services managed based on quality management advocate standardized care, with the implementation of protocols, forms, indicators and care flows; features that have not yet been implemented or developed in current palliative practice.Conclusion: Results suggest that there is a fragmentation in the structure of the Speech Therapy Service, which is directed especially towards swallowing disorders, thus evidencing the need for a systematization of speech therapy assistance provided to PC patients.
Solidarity with Israel, but no Blank Check
Authors: Ambos Kai
Published: October 2023

The actions of Hamas have been called in a detailed declaration drafted by Israeli international lawyers, also signed by this author, for what they are: core crimes under international law, possibly even amounting to genocide directed against the Jewish population of Israel. This should be beyond dispute among international (criminal) lawyers. Nonetheless, especially in Germany we have to critically ask ourselves the follow-up question of how far our support for Israel’s military counterattack can go.
Maltrato en la educación médica: un enfoque desde la bioética
Authors: Mendoza-Sigala Marcela
Published: October 2023

¡Qué no chin**do! Esta frase, quedará en mis recuerdos por un largo tiempo, no fue dirigida a mí, sin embargo, presencié cómo se lo decían a la residente de primer año de ginecología, acompañada de un manotazo, ¿Quién se lo decía? un doctor adscrito, ¿el motivo?, no acomodar sus manos de la manera en que él quería al estar atendiendo un parto, mientras varios miembros del equipo de salud esperábamos a que naciera el bebé. ¿Qué hizo la residente? asintió y le agradeció al doctor e hizo como si nada hubiera pasado. ¿Y qué hicimos los espectadores? Nada, nadie dijo ni una sola palabra, el ambiente estaba tan tenso que hasta daba miedo decir una palabra. Me impactó mucho la actitud del doctor y también que la residente se lo haya tomado de esa manera, pero reflexionando a profundidad, tristemente muchas veces es lo mejor que puedes hacer en esos momentos si no se desean mayores problemas.
THE PRECEDENCE OF FIRE SAFETY IN ARCHITECTURAL EDUCATION
Authors: BODUR Alper
Published: October 2023

This study examines how students perceive fire safety during the architectural education process and the solutions they make for it. The scope of the study consists of the projects designed by the architecture students who took the "Fire Safety in Buildings" course in the Fall Semester of the 2020-2021 and 2021-2022 Academic Years at Ondokuz Mayıs University, Department of Architecture. Within the scope of the study, 91 student projects were discussed in the context of fire safety in line with the principles in the Regulation on the Protection of Buildings from Fire. The study findings showed that the student projects needed to improve regarding the measures taken against fire. According to this research, the measures taken for fire safety in the projects of architecture students are caused by insufficient and incomplete reading. Such deficiencies can be eliminated with minor corrections in most designs if the regulations are examined. For this reason, it has been determined that at the very beginning of the design phase, measures for fire safety -including legislative readings- should be included in the design stage. As a result, the findings from the student projects were discussed, and some general suggestions were made on fire safety.
Optimizing The Efficiency And Cost Of Enterprise Logistics Warehouse: From The Perspective Of Green Supply Chain Management
Authors:   School of Management, Universiti Sains Malaysia, Chen Yunlin
Published: October 2023

The aforementioned findings possess considerable ramifications for both research and application within the domain of logistics management. Nonetheless, this investigation is not without its constraints. Initially, the implementation of a questionnaire survey could potentially yield subjectivity and recall bias. Furthermore, the utilization of non-probability sampling technique could impede the degree of representativeness within the sample population. Furthermore, this research centered exclusively on logistics warehouses situated in China, thereby constraining the potential applicability of its conclusions to dissimilar geographical domains and sectors. Subsequent research endeavors ought to assess the aforementioned constraints and delve deeper into additional variables that impact the effectiveness and monetary aspects of logistics warehouses. Moreover, a deeper analysis is imperative pertaining to the efficacious execution of green supply chain management and sustainable development tactics in real-world scenarios, with the objective of enhancing the operational output and ecological stability of logistics depots. In summation, this research offers noteworthy insights that are beneficial for the logistics management discipline, and it delineates avenues for forthcoming investigations and potential research advancements. By means of ongoing research and practical implementation, the promotion of sustainable development pertaining to logistics warehouses can be facilitated, ultimately bolstering the creation of ecologically-responsible supply chains.
General Usd
Authors: undefined Ridhima
Published: October 2023

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Launching a new English language program
Authors: Kim Thuan Phan
Published: October 2023

In the rapidly globalizing world, English language proficiency is becoming increasingly pivotal for academic and professional success. This research article presents a comprehensive study surrounding the launch of a novel English language program, termed the IELTS 4.0, by the Mentor Language School. The article delves into the objectives, development, and promotion processes of the program, aiming to elucidate its distinctive features and potential benefits. Drawing from both qualitative and quantitative data, the research evaluates the program's curriculum design, pedagogical strategies, and its early impact on students' language proficiency outcomes. Initial feedback reveals a positive reception, with particular emphasis on its modern teaching methodologies, expert-led instruction, and cultural immersion components. Additionally, the program's structured approach, segmented into Beginner, Intermediate, Advanced, and IELTS Preparation levels, facilitates tailored learning experiences, catering to diverse student needs. The article concludes by underscoring the potential of the IELTS 4.0 program in shaping the future landscape of English language education, with recommendations for further enhancements based on early observations and feedback.
Pengaruh Citra Merek, Promosi dan Persepsi Harga terhadap Keputusan Pembelian Scarrlett Whitening
Authors: Wulansari Annisah , Hadisuwarno Hariadi
Published: October 2023

In the skincare sector, the consumer's decision to purchase plays a crucial role in a company's existence, particularly for Scarlett Whitening, as it directly affects profitability. The objective of this study is to examine the effects of brand image (X1), promotion (X2), and price perception (X3) as predictor variables on the purchase decisions (Y) made at Scarlett Whitening. This research adopts a quantitative research design based on surveys and employs an accidental sampling method, with a sample size of 100 individuals who have previously made purchases at Scarlett Whitening. Multiple regression analysis is employed to analyze the data acquired from the participants, and the primary data is directly gathered from the respondents. Research findings show that, independent variables affect purchase decision simultaneously at Scarlett Whitening. However, partially brand image, promotion and price perception affect significantly purchase decision at Scarlett Whitening.
Pengaruh Kualitas Produk, Kualitas Pelayanan, dan Lokasi Terhadap Kepuasan Pelanggan di Restoran I’am Geprek Bensu Harapan Indah
Authors: Nando Iqbal Hernando , Hariadi Hadisuwarno
Published: October 2023

This study aims to analyze the effect of product quality, service quality, and location on customer satisfaction at I'am Geprek Bensu Restaurant. The sample of this study consisted of 100 respondents who were active customers of the restaurant. Data were collected using questionnaires and analyzed using multiple linear regression analysis methods. The results showed that product quality, service quality, and location significantly affect customer satisfaction at I'am Geprek Bensu Restaurant. High product quality, including good taste, attractive presentation, and fresh raw materials, significantly influences customer satisfaction. In addition, good service quality, such as staff friendliness, responsiveness, and service efficiency, also contributes positively to customer satisfaction. These findings suggest that customers tend to feel more satisfied if they receive high-quality products and good service. Furthermore, the location of the restaurant also has a significant influence on customer satisfaction. The strategic location, easy access, and adequate parking facilities provide comfort and convenience for customers to visit the restaurant. These findings suggest that choosing the right location can improve customer satisfaction and reinforce a restaurant's positive image. This research makes an important contribution to understanding the factors that influence customer satisfaction in the restaurant industry. The results of this study guide the management of I'am Geprek Bensu Restaurant to improve product quality, service quality, and choose a strategic location to increase customer satisfaction