bluuebunny/crossref_metadata_2025_split huggingface dataset:
Molybdenum-carbide and tungsten-carbide CVD coatings obtained by Avinit vacuum-plasma technologies.
Authors: Sagalovych Olexiy , Sagalovych Vlad , Popov Viktor , Dudnik Stanislav , Popenchuk Roman 
Published: July 2023

Abstract
The process of gas-phase deposition of Mo-C and W-C multilayer coatings by pyrolysis of molybdenum and tungsten hexacarbonyls on heat-treated technical steel X155CrVMo12-with high class of surface finish (>10) has been studied.
Metallographic research confirms the possibility of low-temperature deposition of high quality coatings with microhardness from ~ 11000 MPa to 20000 MPa at coating deposition rate of 40...170 mkm/h. This provides good adhesion to the substrate materials without reducing the strength characteristics of steel and without deteriorating the purity class of the original surface.
The conducted tribological tests reveal high tribological characteristics of the developed coatings and testify to the prospects of their use for increase of wear resistance and reduction of sliding friction coefficient of friction pairs (steel - coating and coating) of precision units in mechanical engineering.
Comparison of the properties of the developed coatings with the characteristics of electrolytic hard chromium coatings showed that molybdenum-carbide and tungsten-carbide CVD coatings, obtained by vacuum-plasma technology Avinit, are not inferior to chromium coatings in friction values, can surpass them in hardness up to two times, and in resistance to abrasive wear up to 10 times.
According to the aggregate properties, molybdenum coatings can not only compete with electrolytic hard chromium coatings, as hardening and tribological coatings, but also be considered as an alternative to chromium coating in the environmental aspect.
On the basis of the conducted research the technological bases of the processes of applying metallic and metal-carbide CVD coatings on the basis of molybdenum and tungsten have been worked out, which are the base for the development of industrial technologies for precision parts of aggregate and engine construction and machine building.
Examples of application of the developed coatings in production conditions are given.
Design An Automatic Shuttlecock Output Device Using An Arduino Based Servo Motor
Authors: Sholichin Fadly Hikmatus , Syahrorini Syamsudduha , Wisaksono Arief 
Published: July 2023

Badminton is a sport that uses a racket tool as a bat and shuttlecock as a bat and the slop itself is a container for placing a shuttlecock with a length of 37 cm. Badminton is a sport that the majority of many enthusiasts. And began to emerge associations of badminton players who were then trained by coaches to then make a profession or their own expertise. In general, shuttlecocks are removed manually and do not know whether the contents of the slop are exhausted or still filled. Therefore, automatic shuttlecock storage devices can make it easier for coaches to provide training to students who are in the association of badminton players. This tool can store shuttlecocks and remove shuttlecocks automatically which are stored in a dislop containing 12 seeds, the microcontroller used is Arduino Uno, the servo motor is used to remove the shuttlecock that has a dislop and if the shuttlecock is not filled then the Servo Motor does not run or open to remove the shuttlecock so that the slop must be replenished, then the HC-SR04 Sensor above the slop functions as a device that detects whether the shuttlecock is still there, then there is the ISD1820 Sensor which functions as an alarm to notify by voice that the shuttlecock is up and time to refill, then a tripod as the foundation for this automatic shuttlecock storage device. The result of this research test is that 12 shuttlecock seeds were successful. In this case, it is hoped that this research can help and facilitate coaches in training in a badminton player association on a large scale as well as efficiently knowing the exhaustion of shuttlecocks.
AVALIAÇÃO ESCOLAR: OLHARES SOB O PROJETO POLÍTICO PEDAGÓGICO – CONSONÃNCIA OU DESAVENÇA?
Authors: Fonseca Pereira Thairiny , Marques de Souza Edione Fernanda , Soares Rossi Claudia Maria 
Published: July 2023

A educação pode ser entendida por uma prática social em que o processo ensino aprendizado perpassa diversas dimensões, sendo a educação um ato conjunto entre família e escola, escola representa o espaço físico do desenvolvimento dessa prática. Nesse sentido, se faz necessário diretrizes que contribuam para o melhor resultado na formação de alunos. O projeto político pedagógico (PPP) de uma unidade escolar é um documento construído coletivamente que tem por princípio nortear as diversas esferas da educação, desde a entrada do discente no ambiente escolar, assim como seu desenvolvimento a partir de uma avaliação e permanência na escola. Assim, esse trabalho teve como objetivo principal analisar como a avaliação é tratada no PPP de uma escola pública no município de Cuiabá – Mato Grosso. Por fim, são apontadas algumas considerações sobre o que a escola tem como registro e o que realmente acontece na prática no cotidiano escolar.
Motivos para el consumo de tabaco, alcohol y cannabis en el contexto del confinamiento por COVID-19
Authors: Sánchez Cristina , Carmona Arnau , Carbonell Xavier 
Published: July 2023

Introducción. Las drogas producen importantes consecuencias negativas en las sociedades. La prevalencia de su consumo sigue aumentando debido a que existen diversas motivaciones que acercan a las personas a consumirlas.Objetivo. Identificar las diferencias en la frecuencia y cantidad del consumo de tabaco, alcohol y cannabis durante y después del confinamiento por la pandemia; así como la influencia del confinamiento en las motivaciones y riesgo de desarrollar un consumo problemático.Metodología. Estudio transversal analítico con muestreo no probabilístico en dos olas. Participaron 520 jóvenes: 246 durante el confinamiento y 274 después. Se evaluaron datos sociodemográficos, motivaciones de consumo y consumo problemático. Resultados. El consumo de cannabis durante el confinamiento (41,1 %) fue mayor que en el posconfinamiento (29,6 %; p 0,006). Hubo diferencias entre los grupos de consumo problemático de tabaco durante el confinamiento y los motivos sociales (W 8,178, p 0,017) y de afrontamiento (W 26,456, p < 0,001); también, entre los grupos de consumo problemático de alcohol y las motivaciones sociales (W 6865,5, p < 0,001); de animación (W 6768,0, p < 0,001); de afrontamiento (W 6176,0, p = 0,002) y de expansión (W 6774,0, p < 0,001). Entre los grupos de consumo problemático de cannabis y las motivaciones sociales (W 6,404, p 0,041); de animación (W 9,409, p 0,009); de afrontamiento (W 9,265, p 0,010) y de expansión (W 27,692, p < 0,001). Conclusión. El confinamiento incrementó el riesgo de consumir tabaco y cannabis. Las motivaciones de consumo también aumentaron, excepto las asociadas al consumo de alcohol en universitarios. El consumo problemático de tabaco estuvo motivado por necesidades sociales y de afrontamiento; el de alcohol y cannabis, por necesidades sociales, de animación, de afrontamiento y de expansión.
Visionary Leadership in Managing BUM Desa
Authors: RIFA'I AHMAD , Widyanto Irfan 
Published: July 2023

This article aims to formulate things that need to be done and describe the visionary leadership model in managing BUM Desa. This is important to do to provide a comprehensive understanding of visionary leadership in managing BUM Desa. Methodology/approaches – The research method used in writing this article is a literature review method from various sources related to visionary leadership in managing BUM Desa. Findings – It The results of this literature review illustrate that there are 5 leadership perspectives, namely: Competency perspective, Behavioral perspective, Contingency perspective, Transformational perspective, Implicit leadership perspective. Visionary leadership positions are sharpening from a transformational perspective. There are 5 dimensions of visionary leadership: Challenge the process, be enthusiastic, help others to act, set the example, celebrate achievement. Novelty/values – The research succeeded in formulating things that need to be done by operational implementers in managing BUM Desa using visionary leadership
Deep‐Blue CsPbBr3 Perovskite Quantum Dots via Green Polar Solvent and Short Ligand Engineering towards Highly Efficient Light‐Emitting Diodes
Authors: Chen Yanfeng , Lu Shuang , Nan Meng , Xie Jvxuan , Shen Wei , Aleshin Andrey N. , Cheng Gang , Chen Shufen , Huang Wei 
Published: July 2023

AbstractTo date, researchers face a huge challenge in synthesizing blue perovskite quantum dots (PQDs) with short‐chain ligands since the short‐chain ligands increase the polarity and decrease solubility in common non‐polar solvents during syntheses. The use of polar solvents to replace non‐polar ones may solve the solution problem, but polar solvents will decompose PQDs. So, the key to successful synthesis of PQDs with short‐chain ligands is to find polar solvents that can dissolve short‐chain ligands well and do not destroy perovskites concurrently. Herein, a room‐temperature synthesis method for deep‐blue CsPbBr3 PQDs with short‐chain ligands is proposed by using eco‐friendly ethyl acetate polar solvent. CsPbBr3 PQDs with an average size of 3.87 nm and a peak wavelength of 454 nm are synthesized with a photoluminescence quantum yield of 48.4%. With an interlayer modification to the hole transport layer, the deep‐blue perovskite light‐emitting diodes realize a maximum external quantum efficiency of 4.39% and half‐lifetime of 4.5 min at a maximum brightness of 72 cd m−2. This work offers a novel eco‐friendly avenue for the preparation of effective PQDs including blue ones, which will accelerate commercialization of PQDs in lighting and HD full‐color displays as well as reduce discharge of solvent pollutants and protect the global environment.
Artificial Siderophores with a Trihydroxamate‐DOTAM Scaffold Deliver Iron and Antibiotic Cargo into the Bacterial Pathogen Escherichia coli
Authors: Schneider Isabell , Fetz Verena , Prochnow Hans‐Peter , Brönstrup Mark 
Published: July 2023

AbstractInfections with multidrug‐resistant Gram‐negative bacteria constitute a silent pandemic threat that is increasing globally. A major technical and scientific hurdle hampering the development of efficient antibiotics against Gram‐negative species is the low permeability of their outer membrane that prevents the entry of most small molecules into the cells. This can be overcome by targeting active iron transport systems of the pathogens in a Trojan‐Horse strategy that makes use of drug‐loaded artificial siderophores. While we utilized catechols as iron‐binding motifs in previous work, this study reports the design, synthesis and characterization of siderophores with a DOTAM scaffold that was substituted with three hydroxamate arms allowing for a hexacoordination of iron. Their iron‐chelating capabilities were shown colorimetrically, and the ability of compound 1 to deliver iron into Escherichia coli in a chelation‐specific manner was proven by a growth recovery assay. A covalent siderophore‐ciprofloxacin conjugate exerted antibiotic effects against E. coli, albeit it was less potent than the free drug. The study qualifies artificial DOTAM siderophores with hydroxamate binders as scaffolds for bacterial Trojan Horses. This contribution for honoring my mentor Helmut Schwarz echoes two motifs of my work with him: Hydroxylamin, the topic of my first paper ever, and the fascinating properties of iron ions, studied in the gas phase during my Ph.D. Thesis, became a core subject of our current chemical biology research on antiinfectives.
‘Elections can wait!’ The politics of constructing a ‘Hindu atmosphere’ in Kerala, South India
Authors: Paleri Dayal , Santhosh R. 
Published: July 2023

AbstractThe lack of electoral success of the Bharatiya Janata Party (BJP) in the South Indian state of Kerala is often explained through the idea of Kerala ‘exceptionalism’, a broad term used to explain the unique historical, political, and developmental trajectory of the state. However, such explanations do not adequately address the systematic and concerted attempts by Hindu nationalist organizations to transform the cultural sphere of Kerala into a fertile ground for its future electoral politics. Through an ethnographic study of three Hindu nationalist organizations in the civil society sphere of Kodungallur, a multi-religious town in central Kerala, this article explores the politics and implications of their cultural interventions. The article argues that, peeved by an ‘absent Hindu atmosphere’ in Kerala, these organizations are trying to construct new forms of sociality and subjectivity and a grassroots public sphere embedded in Hindu nationalist ideology in Kodungallur. Often described by these organizations as ‘apolitical’ and ‘cultural’, these interventions are indeed a critique of the Kerala public sphere which is characterized by religious pluralism and secular sociality. Hence, the attempt to create a ‘Hindu atmosphere’ by these organizations is a deeply political endeavour aimed at creating an exclusivist Hindu hegemony in the cultural sphere, which they assume will pave the way for their electoral hegemony in Kerala in the long run.
Long-read sequence analysis of MMEJ-mediated CRISPR genome editing reveals complex on-target vector insertions that may escape standard PCR-based quality control
Authors: Higashitani Yuki , Horie Kyoji 
Published: July 2023

AbstractCRISPR genome editing is a powerful tool for elucidating biological functions. To modify the genome as intended, it is essential to understand the various modes of recombination that can occur. In this study, we report complex vector insertions that were identified during the generation of conditional alleles by CRISPR editing using microhomology-mediated end joining (MMEJ). The targeting vector contained two loxP sequences and flanking 40-bp microhomologies. The genomic regions corresponding to the loxP sequences were cleaved with Cas9 in mouse embryonic stem cells. PCR screening for targeted recombination revealed a high frequency of bands of a larger size than expected. Nanopore sequencing of these bands revealed complex vector insertions mediated not only by MMEJ but also by non-homologous end joining and homologous recombination in at least 17% of the clones. A new band appeared upon improving the PCR conditions, suggesting the presence of unintentionally modified alleles that escape standard PCR screening. This prompted us to characterize the recombination of each allele of the genome-edited clones using heterozygous single nucleotide polymorphisms, leading to confirmation of the presence of homozygous alleles. Our study indicates that careful quality control of genome-edited clones is needed to exclude complex, unintended, on-target vector insertion.
A Small Jordanian Adventure Tourism Tour Operator with Big Ambitions
Authors: Pia Magali Perez , Seixas Jakeline Cibelle Santos 
Published: July 2023

Summary
Small inbound tour operators, around the world, live in a competitive environment. They fight to carve out a profitable business niche. The success of this normally depends on collaboration with other operators and good relations with their local tourism authority. Experience Jordan Adventures (EJA), based in Amman, moved beyond this, reaching out to international organizations for support. In particular, they have taken advantage of their membership of the Adventure Travel and Tourism Association (ATTA) to make contacts and establish relationships with funding bodies such as the United States Agency for International Development (USAID) and the Jordanian Action for the Development of Enterprises (JADE). With their partners’ help, EJA has become a driver and developer of new adventure products, such as the Jordan Trail, a long-distance walking route, and the Jordan Bike Trail. These have brought economic value to remoter communities in Jordan.

Information
© The Authors 2023
Parental smoking in the first two years of a child's life and its associations with breastfeeding
Authors: Blazé Katharine S.R. , Xu Huilan , Buchanan Limin , Baur Louise A. , Wen Li Ming 
Published: July 2023

BackgroundExclusive breastfeeding for the first 6 months followed by ongoing breastfeeding to 12 months and beyond is associated with multiple benefits for both mother and child. Maternal smoking is associated with a reduction in breastfeeding. Little is known about the effect of partner smoking on breastfeeding.AimsThis study explores the smoking behaviour of mothers and their partners in the first two years of a child's life and its associations with breastfeeding practice.Materials and MethodsWe performed a secondary data analysis using survey data on 1155 mothers from their third trimester of pregnancy and at six, 12 and 24 months after delivery. Survey questions included smoking status of both mother and partner and breastfeeding intention and practice. Logistic regression models were conducted at each time point.FindingsWhere the mother or both parents smoke, babies were less likely to be breastfed at six months of age (adjusted odds ratio (aOR) 0.29, 95% CI: 0.13–0.66) compared with families where neither parent smoked. Non‐smoking mothers with smoking partners were less likely to intend to breastfeed (aOR 0.29, 95% CI: 0.11–0.82) and their babies were less likely to be breastfed at six and 12 months of age (aOR 0.64, 95% CI: 0.42–0.98 and 0.64, 95% CI: 0.43–0.95 respectively). There was no difference in breastfeeding behaviour between smoking and non‐smoking parents at 24 months.ConclusionSmoking parents are less likely to breastfeed their babies at ages six and 12 months. Breastfeeding promotion should target both smoking mothers and smoking partners.
Pharmacokinetic analysis driven letermovir dosing in pediatric hematopoietic cell transplantation patients with resistant CMV disease
Authors: Pai Vinita B. , Tansmore Jessica , Song Eunkyung 
Published: July 2023

AbstractBackgroundReactivation of cytomegalovirus (CMV) in CMV‐seropositive patients after haploidentical T‐cell receptor αβ+/CD19+ depleted hematopoietic cell transplant (HCT) is common. Due to delayed CMV‐specific immune reconstitution, patients may require prolonged antiviral therapy, including secondary prophylaxis (SP). We present our clinical experience with the off‐label use of letermovir for SP in a severely immunocompromised 2‐year‐old toddler with refractory pre‐B‐cell ALL and bilateral retinitis caused by resistant CMV (A594V UL97 mutation) following a haploidentical TCRαβ+/CD19+ depleted HCT.MethodsThe patient underwent measurement of two separate sets of letermovir serum concentrations, drawn at pre‐dose, 1 and 4 h (and 8 h during the second therapeutic drug monitoring) post‐dose. Pharmacokinetic parameters, including AUC0–24 were calculated, and dose adjustment was performed based on the drug level.ResultsWhile receiving oral letermovir 240 mg once daily without cyclosporine, the observed AUC0–24 was high (75 815 ng h/mL) with a Cmin of 209 ng/mL. The dose was reduced by 25% to 180 mg once daily. Despite the dose reduction, both AUC0–24 and Cmin values further increased to 119 095 ng h/L and 959 ng/mL, respectively. The patient continued oral letermovir 180 mg once daily for about 3 months, with adequate viral suppression (CMV viral load in plasma <150 IU/mL) and no recurrent CMV end‐organ disease or adverse events.ConclusionsGiven limited options for anti‐CMV therapy in young children with resistant CMV, letermovir could be considered as an alternative antiviral for SP. Further studies are warranted to evaluate the pharmacokinetics of letermovir in pediatric allogeneic HCT recipients.
Optimization of Automatic Well Pattern Deployment in High Water-Cut Oilfield
Authors: Li Xianing , Zhang Jiqun , Chang Junhua , Wang Liming , Wu Li , Cui Lining , Jia Deli 
Published: July 2023

Abstract
In view of the problems such as a plurality of dominant water flow channels formed by flushing the reservoir and inferior development effect in the water injection oilfields, reconstructing the current well pattern and providing well pattern evaluation methods are important ways to enhance oil recovery by improving the injection–production relation and increasing the swept area of water flooding. However, the reservoir engineering methods, the simulation methods, and the artificial intelligence algorithms with few objectives enable comprehensive evaluation of the well pattern. In this article, considering multiple evaluation indexes in oilfield development by the glowworm swarm optimization algorithm and niche technology, automatic well pattern optimization is carried out. The glowworm swarm optimization algorithm has the advantage of efficient global search and simpler algorithm flow, which can speed up the convergence and reduce the parameter adjustment. The niche technology can better maintain the diversity of the solutions and solve the multimodal optimization problems more efficiently, accurately, and reliably. The new method was used to optimize the well pattern of one block in a water-flooding oilfield with high water-cut in a certain oilfield. The optimal well pattern is obtained by multiple iterations to maximize the control degree of the well pattern to the sand body. The results indicate that the injection production correspondence ratio and the reserves control degree of the well pattern to the sand body are improved by 4.48% and 7.94%, respectively.
E-Character Education among Online Learning: Focusing on Performance, Collaborative, and Spiritual Character
Authors: Setiadi Samsi , Zulharby Puti , Fahmi Ari Khairurrijal , Pratama Aditya 
Published: July 2023

Character development is one of the goals of the teaching and learning process. On the other side, teachers are still looking for an effective way to instill good character in the students through online learning. According to the survey, this research focuses on the students' characters of individual performance, collaborative and spiritual character. The transition from conventional to e-learning because of the Covid-19 pandemic significantly affects the readiness of lecturers and students to get involved in learning activities, which affects the development of the students' characters. This is a mixed method case study, conducted in seven university. Seven hundred forty-six students of public and private higher educations in Indonesia were investigated in this research. Data collected through observation, field journals and interviews. Data were analyzed through quantitatively and qualitatively. The result showed that the students' performance and collaboration characteristics were not as good as their spiritual character. The students did assignments without paying too much attention to the quality of the content. The students tended to finish the assignments independently, they were rarely involved in the discussion, felt the changing of the academic climate because of the difficulties in accessing the platform to fulfill the needs of remote interaction among the students. The lecturers' readiness was unfamiliar with the teaching platform, and they needed time for converting teaching material into digital form and gave them many assignments.