bluuebunny/crossref_metadata_2025_split huggingface dataset:
Plasma Spraying of Titanates I
Authors: Ctibor P. , Rohan P. , Neufuss K. , Kolman B. , Dubsky J. , Chraska P. 
Published: July 2021

Abstract
Among candidate materials for plasma spraying titanates ATiO3, where A is an element from the alkaline earth group (11), were not systematically tested until today. This paper reports on plasma spraying of synthetic perovskite CaTiO3 and geikielite-perovskite system MgTiO3-CaTiO3. Perovskite CaTiO3 is well known as dielectric material and a basic component of complex dielectric ceramics. Since it is relatively chemically simple and inexpensive material it has been selected for the basic preliminary studies. Mixture of geikielite-perovskite MgTiO3-CaTiO3, with Mg:Ca ratio equal to 94:6, was chosen because its permittivity is independent of temperature. Plasma spraying was done with the water stabilized plasma gun WSP. Plasma spraying conditions were optimized using single splat observation for various substrates and varying substrate temperature. Standard experimental techniques were used for studying of microstructures, chemical and phase compositions and porosity of as-sprayed and annealed deposits. Mechanical properties such as Young’s modulus and microhardness were measured.
Cyclic and Isothermal Oxidation at 1200°C of HVOF NiCrAlY Sprayed Coatings
Authors: Serghini S. , Dallaire S. 
Published: July 2021

Abstract
The isothermal and cyclic oxidation of freestanding Ni-20Cr-10Al-lY thick coatings has been investigated at 1200°C using TGA, SEM, XRD and XPS techniques. Coatings produced by HVOF are dense and remain crack free after thermal treatments. The protective oxide layer formed did not flake off upon cyclic oxidation as confirmed by SEM analysis. In addition, three oxidation regimes were identified after analyzing TGA data: two below 1000 °C and a third one at approximately 1200°C. The regimes below 1000°C correspond to the selective oxidation of elements on the surface and at the subsurface of the coatings whereas the third regime involves element diffusion from the bulk of the coating to the surface. The oxidation regime became asymptotic at 1200 °C as stable oxides formed. The presence of water vapor affects neither the thickness nor the orientation of oxide crystals formed on the surface as confirmed by the X-ray analysis. The XPS and X-ray results show an inter-diffusion between the coating and substrate with a slight increase in chromium concentration at the interface. Element distribution within the oxide layer was found to follow the order: Al-(oxide)Y-(oxide)/Cr-(oxide)/Ni-(oxide)/NiCrAlY from the outermost oxide layer to the bulk of the coating. These results show that HVOF dense Ni-20Cr-10Al-lY sprayed coatings can be used as anti-oxidant barriers in both isothermal and cyclic oxidation at 1200°C.
Aqueous Corrosion Behavior of Thermally Sprayed Coatings for Steel Substrate
Authors: Tani K. , Adachi M. , Nakahira A. , Takatani Y. 
Published: July 2021

Abstract
The work reported herein deals with the interaction among the thermally sprayed coatings and steel substrate in acid aqueous solutions investigated by using the electrochemical process. Thermally sprayed coatings on steel substrate for such as the tribological applications except for the sacrificial anode property have been extended. The environment of these machinery components is often utilized accompanied with the aqueous solutions. The galvanic corrosion occurred in aqueous solutions among the metals or alloys have been well known. In the actual spray process, the formation of penetrated pores or crevice defects are not generally avoided. In the aqueous solution environment, the penetrated defects cause the galvanic corrosion between coating and steel substrate, and tend to be occurred the coating spalling. In this work, the electrochemical process was employed to determine the corrosion phenomena. The preferable combination of sprayed coatings and steel substrate are discussed and the examples of design of the intermediate layers are proposed.
Tribological Requirements of Thermally Sprayed Coatings for Wear Resistant Applications
Authors: Siegmann S.D. , Brandt O.C. , Margadant N.M. 
Published: July 2021

Abstract
During the last decades, improved understanding of tribological behavior of different material combinations led also to an intensified development of thermal spray applications. In the field of e.g. hard chromium replacement by thermal spraying, significant amount of work has been done and published world wide, however, the authors manly focused on only one tribological aspect like friction, abrasion, erosion, cavitation or corrosion, respectively. In real applications, often more than one of those factors influence the successful use of these coatings. Besides the bulk properties of the materials, the coating micro structure, which is strongly spray system dependent, needs to be considered and investigated. Higher functionality and reliability than conventional competitive coatings still has to be proved at laboratory scale and under field conditions for thermally sprayed coatings. This paper describes the state of the art of thermally sprayed coatings as alternatives for other coatings. Published literature data and a wide range of own tribological investigations and field tests, reveals the potential for other applications.
High Temperature Erosion Properties of Thermal Barrier Coatings Produced by Acetylene Sprayed High Velocity Oxygen Fuel Process
Authors: Cole M.A. , Walker R. 
Published: July 2021

Abstract
Over the past 30 years, there has been considerable interest in the development of thermally sprayed thermal barrier coatings (TBCs) for aerospace and land based turbine applications. The use of TBCs enables higher operating temperatures, resulting in significant fuel efficiency savings. This paper reports on the development of dense Yttria Stabilised Zirconia (YSZ) thermal barrier coatings produced by High Velocity Oxygen Fuel (HVOF) spraying using acetylene as the fuel gas. The use of a high temperature gas erosion rig allowed the controlled evaluation of erodent size, velocity, impact angle, and temperature on coating performance. The work also covers the optimization of process parameters, including powder morphology, stand-off distance, oxygen to fuel ratio, gas pressures, and flowrates, and their effect on coating characteristics such as deposition efficiency, microhardness, and surface roughness.
Lanthane Aluminate—A New Material for Atmospheric Plasma Spraying of Advanced Thermal Barrier Coatings
Authors: Friedrich C.J. , Gadow R. , Schirmer T. 
Published: July 2021

Abstract
One of the main application fields of the thermal spraying process are thermal barrier coatings (TBC). Today partially stabilised zirconia (YSZ or MSZ) is mainly used as TBC material. At temperatures above 1000°C, zirconia layers ages distinctively including shrinkage and microcrack formation. Therefore there is a considerable interest in TBCs for higher temperature application. In this paper lanthanum aluminate, a newly developed TBC material with long term stability up to 1400 °C, is presented. It ages significantly slower at these high temperatures than commercial zirconia based TBCs. Its composition favors the formation of platelets, which prevent a densification of the coating by postsintering. It consists of La2O3, AI2O3 and MgO. Its crystal structure corresponds to lanthanum aluminate powders were produced using two different fabrication routes, one based on salts, the other one based on oxides. To optimise the granulate various raw materials and additives were tested. The slurry was spray dried in a laboratory spray drier and calcined at 1650°C. Using these two powders, coatings were produced by atmospheric plasma spraying (APS). The residual stresses of the coatings were measured by the hole drilling method and the deposition process was optimised with respect to the residual stresses of the TBC. The coatings were extensively analysed regarding phase composition, thermal expansion, long term stability as well as microstructural properties.
A Critical Evaluation of the Employment of Microhardness Techniques for Characterizing and Optimizing Thermal Spray Coatings
Authors: Factor M. , Roman I. 
Published: July 2021

Abstract
Frequent reporting of microhardness data for thermal spray coatings testifies to the widespread use of this technique for coatings characterization. However, inadequate reporting of microhardness procedures makes comparisons between published coatings hardness statistics difficult and it appears that both microhardness in general and its significance to characterizing thermal spray coatings in particular, are poorly understood. This paper demonstrates that though microindentation technique is a useful laboratory procedure that can be used for coatings optimization, research and quality control purposes, poor understanding often leads to worthless data and thus to erroneous conclusions. A high quality WC-12%Co coating supplied by Sulzer Metco was hardness tested on both the polished cross-section and plane surface of the coating. Contributions to the variance in results obtained and sources of significant errors are discussed and conclusions are drawn regarding the methodology and suitability of hardness testing for characterizing thermal spray coatings. The limits in repeatability and reproducibility of Vickers microhardness data for hard metal thermal spray coatings are discussed. The necessity for rigorous statistical procedures of data analysis is demonstrated. It is suggested that the technique is inherently unsuitable for characterizing hard thermal spray coatings due to poor intrinsic reproducibility.
TECHNICAL MODELING IN DESIGN AND TECHNOLOGICAL ACTIVITY OF SCHOOLCHILDREN
Authors: Vasenko V. 
Published: July 2021

The article considers the possibilities of purposeful influence on the development of schoolchildren creative potential, their involvement in various activities, self practical work in the field of education “Technology”. They can be effectively implemented through the use of modern pedagogical and technological systems, which are based on the principles of design and technological activities, which provides simultaneous development, training and education of students by involving them in active creative work.
It is established that the creative process is characterized by the unity of theoretical knowledge and practical experience and the theory is tested in practice, but in practice the issues appear that require a theoretical solution. For technical creative activity the theoretical preparation of schoolboys consists in providing them with a system of knowledge, methods and ways of designing, receptions of the decision of creative problems and technical knowledge. Experience of practical work appears on the basis of the formation of skills and abilities to work with instruments and perform technological operations.
It is described that the continuity of this process in creative activity is of great importance, and the episodic nature is ineffective. The education of constant interest in creative work is carried out continuously, systematically during all years of schooling by creative activities. The effectiveness of creative work has a significant impact on the education of creative personality traits. The result is that the student has more opportunities to implement in their intellectual and practical activities the necessary corrections to the concepts and images of technical objects and processes, which result in fundamentally new solutions.
It is shown that project-technological activity as the main didactic unit promotes: formation of skills, creative system thinking, technological culture and ethics, strengthening of imagination. It is a powerful stimulus for the emergence of new creative ideas in students, the search for alternative solutions, their analysis and synthesis, and in the future provides a basis for innovative thinking and action. Implementation of personality-oriented paradigm of labor training of students; ensures the unity of education and upbringing of students, preparing them for professional self-determination, the desire for self-education.
It is proved that the lessons of technical work open wide opportunities for improving the creativity of students. The use of methods of teaching students technical modeling in the process of organizing design and technological activities in the lessons of labor training contributes to this. It is important for the teacher to make the most of all opportunities for the formation of a technologically advanced personality, the level of development of which is not possible without proper creative abilities obtained in technical modeling in the process of organizing design and technological activities of students.
Rozpoczęcie biegu terminu przedawnienia roszczenia z art. 299 § 1 Kodeksu spółek handlowych w kontekście zachowania przez wierzyciela należytej staranności w dochodzeniu roszczeń
Authors: Nowakowska Anna 
Published: July 2021

Prawidłowe oznaczenie rozpoczęcia biegu terminu przedawnienia roszczeń wierzyciela spółki przeciwko członkom jej zarządu ma doniosłe znaczenie praktyczne. Na podstawie art. 299 § 1 k.s.h. w zw. z art. 4421 § 1 k.c., może to nastąpić w oderwaniu od rzeczywistego momentu powzięcia przez niego wiedzy o bezskuteczności egzekucji wobec spółki. Celem niniejszego artykułu była analiza bezczynności lub zwłoki wierzyciela spółki z o.o. w dochodzeniu roszczeń z perspektywy dochowania należytej staranności, a także przedstawienie podstawowego modelu należytej staranności, który może znaleźć zastosowanie przy ocenie działań poszkodowanego wierzyciela i obliczaniu początku terminu przedawnienia jego roszczeń. Przeprowadzone rozważania pozwoliły na wyciągnięcie wniosku, że negatywnymi następstwami zaniechania wierzyciela są zwolnienie członka zarządu z odpowiedzialności na podstawie art. 299 k.s.h. (w przypadku, gdy wierzyciel nie podjął w odpowiednim czasie egzekucji przeciwko spółce, choć egzekucja była możliwa) oraz rozpoczęcie biegu terminu przedawnienia w dacie wcześniejszej niż moment faktycznego uzyskania informacji o bezskuteczności egzekucji wobec spółki.
Kilka refleksji w kwestii prawa pracodawcy do zawieszenia wykonywania działalności gospodarczej
Authors: Wiśniewski Janusz 
Published: July 2021

Analiza zagadnienia prawa pracodawcy do zawieszenia wykonywania działalności gospodarczej, uwzględnia aktualny stan prawny wyznaczony ustawą z dnia 6 marca 2018 r. Prawo przedsiębiorców. Problematyka ta dotychczas w literaturze zarówno prawa pracy jak i prawa gospodarczego nie była przedmiotem bliższej analizy. Stąd celowym wydawało się podjęcie próby odpowiedzi na pytanie, w jakim zakresie mechanizmy wkodowane w tę regulację umożliwiają racjonalne korzystanie przez pracodawcę z instytucji zawieszenia wykonywania działalności gospodarczej. Z poczynionych rozważań wynika, iż art. 22 ustawy Prawo przedsiębiorców nie ma przymiotu przepisu kompletnego, zatem uzasadnionym de lege lata wydaje się stanowisko, że w sprawach w nim nieuregulowanych, odnoszących się zwłaszcza do praw i obowiązków pracownika i pracodawcy w przypadku zakończenia korzystania z urlopów związanych z rodzicielstwem. Czy też złożenia przez pracownika wniosku dotyczącego łączenia korzystania z urlopu rodzicielskiego i urlopu wychowawczego z wykonywaniem pracy u pracodawcy udzielającego tego urlopu – stosuje się przepisy Kodeksu pracy, regulujące problematykę urlopów związanych z rodzicielstwem. Przyjęcie odmiennej opcji interpretacyjnej powodowałoby, iż ogólnikowość art. 22 ustawy Prawo przedsiębiorców mogłaby się okazać istotnym czynnikiem dysfunkcjonalnym w praktycznym stosowaniu instytucji „zawieszenia”. W moim przekonaniu naruszona zostałaby również zasada równego traktowania pracodawców.
Zasadnym wydaje się także zwrócenie uwagi na zakres podmiotowy art. 22 ust. 2 ustawy Prawo przedsiębiorców. Ze swej strony prezentuję zdanie, że przepis ten w sferze podmiotowej, odnosi się w zasadzie do pracodawców, którzy w świetle art. 7 ust. 1 zdanie drugie komentowanej ustawy, mają status mikroprzedsiębiorcy. Należy jednocześnie podkreślić, że instytucja „zawieszenia” służy bezpośrednio interesom pracodawcy, chociaż ma też wkodowane mechanizmy ochrony interesów pracownika. Ochrona interesów pracownika wynika zwłaszcza z art. 22 ust. 2 zdanie 2 ustawy Prawo przedsiębiorców, który stanowi że w przypadku zakończenia korzystania z urlopów lub złożenia przez pracownika wniosku dotyczącego łączenia korzystania z urlopu rodzicielskiego z wykonywaniem pracy u pracodawcy udzielającego tego urlopu, pracownik ma prawo do wynagrodzenia jak za przestój, określonego przepisami prawa pracy, do zakończenia okresu zawieszenia wykonywania działalności gospodarczej.
IMPLEMENTASI PARADIGMA POSTMODERNISME DALAM PEMBAHARUAN HUKUM DI INDONESIA SERTA KRITIK TERHADAPNYA
Authors: Saputra Romi 
Published: July 2021

Tulisan ini bertujuan untuk menyingkap paradigma postmodernisme melalui critial legal studies yang secara pasti dan sadar sudah banyak diamalkan oleh negara-negara di dunia tidak terkecuali negara indonesia. Dengan memakai dan mengendarai istilah paradigma baru postmodernisme sangat mempengaruhi alam berfikir bangsa indonesia dalam berhukum. Posmodernisme adalah suatu aliran, pemikiran, dan sikap yang berkaitan dengan kritik teoritikal yang menekankan pada relativitas, anti universalitas, nihilist, kritik terhadap rasionalisme, kritik terhadap universalisme, kritik terhadap fundamentalisme atau sains. Setidaknya ada 2 bentuk karater paradigma postmodernisme yaitu Dekonstruktif dan Relativis. Paradigma ini selanjutnya diimplementasikan untuk menganilisis persosalan sosial, budaya , dan tidak terkecuali persoalan hukum. Hanya saja kemudian indonesia sebagai negara yang bercorak majmemuk berdampak terhadap bangunan hukumnya yang plural yaitu hukum barat, hukum adat dan hukum islam pada saat yang sama berlaku untuk bangsa indonesia. Namun ada beberapa pihak di indonesia yang telah terpengaruh oleh alam berfikir Postmodernisme secara salah kaprah dan tidak selektif kemudian mengimplementasikanya dalam pembaharuan hukum di indonesia. Sehingga menimbulkan persoalan besar dalam berhukum terutama hukum islam, karena postmodernisme dengan corak dan karakter paradigmanya tidak sesuai dengan semangat pembahuran hukum islam karena semangat dan spirit didalamnya sanat bermasalah yaitu sarat dengan sekularisme, pluralisme, dan liberalisme yang dapat merusak kesakralan hukum islam tersebut yang bersandar kepada kemurnian wahyu dari allah SWT. Kata Kunci: Postmodernisme, Pembaharuan Hukum, dan kritik
I Called Off My Wedding. The Internet Will Never Forget
Authors: Goode Lauren 
Published: July 2021

I STILL HAVE a photograph of the breakfast I made the morning I ended an eight-year relationship and canceled a wedding. It was an unremarkable breakfast—a fried egg—but it is now digitally fossilized in a floral dish we moved with us when we left New York and headed west. I don’t know why I took the photo, except, well, I do: I had fallen into the reflexive habit of taking photos of everything.
Not long ago, the egg popped up as a “memory” in a photo app. The time stamp jolted my actual memory. It was May 2019 when we split up, back when people canceled weddings and called off relationships because of good old-fashioned dysfunction, not a global pandemic. Back when you wondered if seating two people next to each other at a wedding might result in awkward conversation, not hospitalization….
'I Can't Meet That Deadline': Implications of New Truck Driver Hours of Service Regulations for Florida Agriculture
Authors: Beilock Richard 
Published: July 2021

In 1939, the U.S. Federal Government established regulations limiting the number of hours that truck drivers could drive and be on duty. These are known as Hours of Service Regulations (HOSR). In response to concerns about fatigue-related accidents, the U.S. Congress mandated studies in 1995 to determine how HOSR could be improved. Eight years, many millions of dollars, and over 53,000 public comments later the revised HOSR came into effect on January 4, 2004. Over 99% of all Florida produce and ornamentals shipped outside of the state are delivered by truck. Rapid and reliable transport for these highly valued perishables is essential. In this paper, the revised HOSR is described and some assessments are made of its effect on trucking. This is EDIS document, FE542, a publication of the Department of Food and Resource Economics, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL. Published March 2005.
Phosphorous Acid and Phosphoric Acid: When all P Sources are not Equal
Authors: Brunings Asha M. , Datnoff Lawrence E. , Simonne Eric H. 
Published: July 2021

While growers are familiar with phosphorus-containing fertilizer, the abundance of terms, apparently similar (such as phosphoric acid and phosphorous acid), may create some confusion on the actual content and efficacy of these products. Some common phosphorus-containing compounds are listed in Table 1. Some claims found in commercial literature and product descriptions refer to phosphorous acid as a “supplemental fertilizer,” while others present it as a fungicide (Table 2). The purpose of this article is to explain what phosphorous acid is and to examine both the fungicidal activity and nutritional value of phosphorous acid. This document is HS1010, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: April 2005.
HS1010/HS254: Are Phosphorous and Phosphoric Acids Equal Phosphorous Sources for Plant Growth? (ufl.edu)
Stink Bugs and Leaffooted Bugs Are Important Fruit, Nut, Seed and Vegetable Pests
Authors: Mizell, III Russell F. 
Published: July 2021

Stink bugs (Pentatomidae) and leaffooted bugs (Coreidae) are important direct pests of many seed, fruit, vegetable and nut crops. Recently they have become serious pests of cotton because of the reduction in pesticide use resulting from the eradication of the boll weevil and the implementation of genetically-modified cotton. This document is ENY-718, one of a series of Entomology and Nematology Department, Florida Cooperative Extension Services, Institute of Food and Agricultural Sciences, University of Florida. Publication Date: April 2005.
ENY-718/IN534: Stink Bugs and Leaffooted Bugs Are Important Fruit, Nut, Seed and Vegetable Pests (ufl.edu)
Tetrio Sphinx, Giant Gray Sphinx, Frangipani Hornworm, Pseudosphinx tetrio (Linnaeus) (Insecta: Lepidoptera: Sphingidae)
Authors: Dunford James C. , Barbara Kathryn A. 
Published: July 2021

The tetrio sphinx, Pseudosphinx tetrio (Linnaeus), is a common moth in the American tropics and subtropics that less frequently occurs in southern parts of Florida. Although the adults exhibit mostly drab grey coloration, larvae are conspicuous, large caterpillars that often occur in gardens feeding on frangipani and other members of the dogbane family (Apocynaceae). This document is EENY-344, one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: March 2005.
EENY344/IN621: Tetrio Sphinx, Giant Gray Sphinx, Frangipani Hornworm, Pseudosphinx tetrio (Linnaeus) (Insecta: Lepidoptera: Sphingidae) (ufl.edu)