Formation Of Inclusions Research Articles

Pseudorutile-leucoxene-quartz ores of Timan ‒ a new genetic type of titanium raw materials: prospects for industrial development

The two largest deposits of Russia – Yaregskoye and Pizhemskoye belong to the same genetic type; hydrothermal-metamorphic indigenous deposits. They are located in the same Timan structure at a distance of no more than 230 km from each other. According to the total approved reserves and forecast resources of titanium dioxide, they are approaching 60% of the all-Russian and will form the basis of industrial titanium raw materials used in Russia in the near future. In the interests of technological mineralogy, morphological features, internal structure, chemical composition of grains of the two main titanium mineral phases ‒ leucoxene and pseudorutile, TiO2 polymorphs, as well as the composition of mineral microinclusions in these phases have been studied in detail. The compositions of all mineral phases in polished preparations of leucoxene and pseudorutile were analyzed by SEM-EDS method at the Institute of Geology and Geochronology of the Precambrian of the RAS, 147 chemical analyses were obtained at the point (3 µk) and many images of polished grains of anatase, leucoxene and pseudorutile were scanned over the area (20×20 µk). In the leucoxene grains themselves, 12 mineral phases were diagnosed and characterized in the form of inclusions: pseudorutile, rutile, anatase, quartz, hydromuscovite-illite, kaolinite, siderite, zircon, xenotime, pyrite, florencite, monazite and kularite. TiO2 polymorphs are verified by Raman spectroscopy and X-ray diffraction analysis. New evidence has been obtained that the transformation of ilmenite into leucoxene occurs hydrothermally through intermediate phases ‒ Fe-rutile and pseudorutile; the enlargement of rutile crystals in the leucoxene grain itself is shown; the presence of secondary crystals of siderite, florencite and others inside the studied grains.

Thermodynamics of the Formation of Non-Metallic Inclusions during the Deoxidation of GCr15 Bearing Steel

The non-metallic inclusions in steel mainly come from the deoxidization process of molten steel. Based on the different deoxidization processes of GCr15 bearing steel produced by a domestic steel plant, the single deoxidization curves of Al, Si, and Mn and the compound deoxidization curves of Al-Si and Si-Mn under pure molten iron and GCr15 bearing steel production conditions were calculated with the FactSage 8.1 thermodynamic software. The results show that the deoxidization curves under the two conditions are quite different. At the same time, the Al-Ti deoxidation equilibrium curve under the condition of GCr15 bearing steel was calculated. It was found that when [Ti] < 0.0015% in the steel, the equilibrium deoxidation product was Al2O3, and no titanium oxide was generated. Finally, a thermodynamic calculation and analysis of the effect of rare-earth Ce content on the modification of inclusions in GCr15 bearing steel were carried out. The results showed that when T = 1873 K, the rare-earth Ce treatment of aluminum deoxidized the GCr15 bearing steel; when [Al] = 0.015%, Al2O3 inclusions increased with the increase in [Ce] content, and the evolution path was Al11O18Ce→CeAlO3→Ce2O3. When [Si] = 0.28%, [O] > 50 ppm, and CeCrO3 and [O] 0.012% appeared. CeS inclusions appeared in the steel, and the final equilibrium product was CeS + Ce2O3. When [Ce] < 0.012%, CeS was not produced in the steel, and only Ce2O3 existed.

Evaluation of distance learning in ukrainian higher media education: Perspectives and impact of stakeholders

The research focuses on the utilization of computer-oriented educational environments for distance learning, aiming to assess the current landscape, highlighting both the positives and negatives, as well as successful examples and future prospects in higher education. Methodologically, the study involved an analysis of various sources, including statistical and narrative information, and conducted surveys among key stakeholder categories to evaluate their perceptions, effectiveness, and the most productive formats of distance learning. The findings challenge the notion that distance education is only suitable for extreme conditions. Key educational process participants, especially in fields like "Journalism," view well-organized distance education as comparable to traditional and extramural learning methods. It enhances the computer technology skills of both teachers and students, proves to be the most inclusive educational format, lessens financial burdens, broadens professional development opportunities, aids in the internationalization of education, and serves as a marketing tool for attracting prospective students. However, the study also reveals an inconsistency between student and faculty expectations regarding remote communication formats and the practical ability of specialists to meet these demands.

Copper coordination polymer with lattice water molecules and strong electrocatalytic OER activity

The versatility of organic ligand and metal coordination geometry produced coordination polymer with intriguing network structure and exciting functional properties. Herein, we have synthesized a copper coordination polymer (Cu-HS) using an amino acid based multidentate ligand and explored its electrocatalytic OER activity in alkaline condition. Single crystal structural studies showed the formation of 1D coordination network structure and inclusion of lattice water. Copper ions in Cu-HS displayed octahedral and square pyramidal coordination geometry. Electrocatalytic OER studies in alkaline medium showed strongly enhanced activity for Cu-HS polymer that required an overpotential of 273 mV to achieve the benchmark current density of 10 mA/cm2. Tafel slope analysis and electrochemical impedance studies suggested faster reaction kinetics at the electrode surface modified using Cu-HS. After catalysis, XPS and FTIR spectra of Cu-HS suggested the conversion to metal oxide during the electrocatalysis.

Exploration of SUMO2/3 Expression Levels and Autophagy Process in Fragile X-Associated Tremor/Ataxia Syndrome: Addressing Study Limitations and Insights for Future Research.

Fragile X-associated tremor/ataxia syndrome (FXTAS) is a late-onset neurodegenerative disorder that appears in adult FMR1 premutation carriers. The neuropathological hallmark of FXTAS is an intranuclear inclusion in neurons and astrocytes. Nearly 200 different proteins have been identified in FXTAS inclusions, being the small ubiquitin-related modifier 2 (SUMO2), ubiquitin and p62 the most highly abundant. These proteins are components of the protein degradation machinery. This study aimed to characterize SUMO2/3 expression levels and autophagy process in human postmortem brain samples and skin fibroblast cultures from FXTAS patients. Results revealed that FXTAS postmortem brain samples are positive for SUMO2/3 conjugates and supported the idea that SUMO2/3 accumulation is involved in inclusion formation. Insights from RNA-sequencing data indicated that SUMOylation processes are significantly upregulated in FXTAS samples. In addition, the analysis of the autophagy flux showed the accumulation of p62 protein levels and autophagosomes in skin fibroblasts from FXTAS patients. Similarly, gene set analysis evidenced a significant downregulation in gene ontology terms related to autophagy in FXTAS samples. Overall, this study provides new evidence supporting the role of SUMOylation and autophagic processes in the pathogenic mechanisms underlying FXTAS.

The green economy as plantation ecology: When dehumanization and ecological simplification go 'green

The green economy is proposed as a solution to address growing and potentially irreversible ecological crises. But what happens when environmental solutions are premised on the same logics of brutal simplification and dehumanization that sustain and reinforce systems of oppression and ecological breakdown? In this article, we describe the transformation of the biophysical landscape of the planet into replicable blueprints of the plantation plot. The plantation as a colonial-era organizational template is an ongoing ecological process premised on disciplining bodies and landscapes into efficient, predictable, calculable, and controllable plots to optimize commodity production and is dependent on racialized and gendered processes of dehumanization. The visible cultural, physical, aesthetic, and political singularity of the plot, under the guise of objectivity and neutrality, permits a tangible depiction of the way ecological breakdown takes place. We interrogate the notion of "greening" as a strategy to combat the unintended impacts of colonial plantation ecology, arguing that such tactics further reinforce the template of plantation ecology rather than dismantle it. We first conceptualize the historical plantation and its biophysical, cognitive, and corporeal organizational principles. We then offer examples of "greening" as new, more inclusive (but equally detrimental) forms of plantation logics, and crucially identify how these extensions of plantation logic get co-opted by resistance agents, from social movements to disease and pestilence. We consider sustainability certifications of palm oil through the Roundtable on Sustainable Palm Oil (RSPO) in Colombia and compensatory afforestation programs designed to offset forest destruction through monoculture plantations in India. We conclude by highlighting how abolition ecologies can serve as an antidote to plantation logic and highlight necessary relationships of self-reflexivity, repair and collective solidarity required to disinvest in plantation ecology.

Structural properties and defect formation mechanisms in MBE-grown HgCdTe on InSb (211)B substrates

This work investigates the structural properties of HgCdTe thin films grown on InSb (211)B substrates using molecular beam epitaxy (MBE). The Cd composition of thin films is accurately determined using non-destructive approaches based on x-ray diffraction (XRD) and reflectance infrared spectroscopy. The as-grown HgCdTe thin films exhibit characteristic surface defects with a size of 7–10 μm and density of ∼105 cm−2, resulting in an additional spread in XRD full width at half maximum. Cross-sectional transmission electron microscopy results indicate that these defects are caused by surface In droplet formation during the oxide removal process of InSb substrate, which subsequently results in the formation of In4Te3 inclusions and extended defects in MBE-grown HgCdTe. Our findings provide additional confirmation that suppressing thermally induced damage of the InSb substrate is necessary for fabricating high-performance infrared detectors using HgCdTe grown on InSb substrates.

Words of change: The increase of gender-inclusive language in German media

Abstract Everyday observations seem to indicate an increase in gender-inclusive language (GIL) in Germany; however, previous research on the prevalence of GIL suggests that it is a marginal phenomenon. Moreover, from a theoretical side, an increase in GIL seems unlikely because of the cognitive challenge language change holds, the existence of multiple GIL variants, and the antagonistic environment that Germany poses for language change. This study empirically measures the use of GIL in five media sources in Germany. Over four million articles from 2000 to 2021 are analysed using the IDS Deutscher Referenzkorpus (DeReKo), supplemented by an in-depth analysis of 500 newspaper articles scraped in 2021. A fine-grained analysis along the dimensions of political orientation of the outlet, type of GIL, and author’s gender is conducted. In addition to observing an unexpectedly rapid increase in GIL, two different trends are identified: whilst non-binary inclusive forms of GIL are increasingly used in the left-leaning newspaper, GIL that adheres to a binary notion of gender is favoured in the mainstream and right-leaning media. This sheds light on how difficult behavioural change can occur.

Заимствования и кодовые переключения в башкирском языке (на примере караидельского говора)

Introduction. In contact linguistics, the problem of differentiating between code switches and loanwords is relevant enough, which arises from that there are no unified research approaches thereto, and consequently nor there any precise definitions for the phenomena and classification criteria. The difficulties in distinguishing between the two linguistic processes result from that in intensive language contacts they tend to gain more similarities in terms of phonology, morphology and syntax — rather than differences. Some scholars argue that code-switching is the first stage in the development of a token in a matrix language, i.e. the lexemes had been code switches before they became ‘nuclear’ borrowings. The process of switching codes in speech is associated with the phenomenon of mass bilingualism. Goals. The problem of code-switching is understudied in Bashkir linguistics, and the paper attempts to distinguish the former from borrowings in the context of Bashkir-Russian bilingualism. Materials and methods. The study analyzes transcribed recordings of colloquial Bashkir (from speakers of Karaidel, a dialect of northwestern Bashkir) obtained during the author’s expeditions of 2022 and 2023. When it comes to describe code-switching, the workr employs Myers-Scotton’s Matrix Language Frame model. The article deals with intraphrasal switches in the form of inclusions and insular switches within one sentence. Results. The study identifies some difficulties of distinguishing between borrowings and code switches. According to G. Chirsheva, borrowings are divided into cultural and occasional (nuclear) ones. The latter are essentially and functionally close to code switches. K. Myers-Scotton presumes their main differences can be reduced to that code switches are used in individual cases (or no more than three times) and are not included in the mental lexicon of the matrix language. Therefore, barbarisms, such as еще / ищо, уже / ужы, вис, сәпсим, etc., which are often used in the speech of bilingual Bashkirs, must be referred to as occasional / nuclear borrowings (according to G. Chirsheva), while individual foreign-language inclusions be considered code switches.

Self-Perception of Inclusion in an Inclusive Choir: An Analysis Using the Scale for the Assessment of Inclusion (SAI).

Inclusion promotes equal opportunities, and aims to eliminate discrimination, by ensuring full access, participation, and representation for all individuals in society, with music playing a crucial role in addressing this global challenge, and fostering positive and inclusive change. The aim of this study is to identify perceptions of inclusive culture, policies, values, and practices in one specific inclusive choir in Spain. The sample consisted of 135 members, ranging from 18 to 79 years of age, of which 22.2% have recognised disabilities. All of them filled in the adapted Scale for the Assessment of Inclusion (SAI) form. The results show that, regardless of gender, age, and length of participation in the choir, their members share positive perceptions of the inclusiveness of its values, policies, practices, and culture. However, perceptions vary across the groups surveyed, and are generally more favourable among participants with a disability, those without a university education, or those aged 26 or over. It is found that people who participate in an inclusive choir, in which music is the mediating resource, perceive a high level of inclusion that allows them to feel they belong to a group where diversity, equality, and the promotion of people are respected. The findings are analysed, considering the importance of conducting multidimensional evaluations that include all members of an organisation.

The Mineral and Geochemical Features of Sulfides in the Jade Hydrothermal Field of the Okinawa Trough in Off-Shore China

In this study, mineralogical and elemental geochemical characteristics of massive sulfide samples collected from the Jade hydrothermal field, located in the Izena depression in the central graben of the Okinawa Trough, were analyzed by means of optical microscopy, scanning electron microscopy, and electron probe microanalysis (EPMA). The results show that the mineralization in the Jade hydrothermal field can be divided into Zn-Cu-Pb-rich massive sulfides and Zn-Fe-rich massive sulfides. The former is composed of sphalerite, galena, chalcopyrite, pyrite, and anglesite, which is the product of the low-temperature alteration of galena. The latter is mainly composed of sphalerite, pyrite, marcasite, and traces of galena. Cu and Zn in pyrite may exist in the form of microinclusions, while Ag and Pb may exist in pyrite in the form of fine galena inclusions containing Ag. Fe and Cu may enter sphalerite in the form of ion replacement. Zn may enter chalcopyrite in the form of ion replacement. Consistent with the previous understanding, the metal elements in the hydrothermal liquid system in the Jade hydrothermal field mostly migrated as sulfur complexes, and when the hydrothermal fluid mixes with seawater, the physical and chemical conditions of the fluid change, resulting in sulfide mineral precipitation. However, the chemical structure of chalcopyrite is still controversial, which restricts the understanding of the substitution mechanism of trace elements during chalcopyrite precipitation.

Effect of stabilizer and binder on the phase formation in zirconia castables for application in secondary steel industry

In the recent years, the demand for clean steel in critical applications e.g. in construction or transportation industry has increased. In view of the research and developments in the steel production and refinement it seems logical to pursue new approaches on the refractories and to evaluate the existing ones. Within this study zirconia castables stabilized by yttria or magnesia with additions of an alumina or an alumina-magnesia based binder were developed. The influence stabilizer and binder type on the phase evolution of the zirconia castables was investigated. The physical, mechanical and thermomechanical properties were evaluated. Subsequently, the zirconia castables were tested in a steel casting simulator under industry-oriented conditions. Alterations in surface chemistry and morphology were studied via optical light and scanning electron microscopy. Using an automated feature analysis, the solidified steel was investigated regarding the formation of non-metallic inclusions during steel casting experiments to identify their type and frequency.

Novel Conformation-Dependent Tau Antibodies Are Modulated by Adjacent Phosphorylation Sites.

Tau proteins within the adult central nervous system (CNS) are found to be abnormally aggregated into heterogeneous filaments in neurodegenerative diseases, termed tauopathies. These tau inclusions are pathological hallmarks of Alzheimer's disease (AD), Pick's disease (PiD), corticobasal degeneration (CBD), and progressive supranuclear palsy (PSP). The neuropathological hallmarks of these diseases burden several cell types within the CNS, and have also been shown to be abundantly phosphorylated. The mechanism(s) by which tau aggregates in the CNS is not fully known, but it is hypothesized that hyperphosphorylated tau may precede and further promote filament formation, leading to the production of these pathological inclusions. In the studies herein, we generated and thoroughly characterized two novel conformation-dependent tau monoclonal antibodies that bind to residues Pro218-Glu222, but are sensitive to denaturing conditions and highly modulated by adjacent downstream phosphorylation sites. These epitopes are present in the neuropathological hallmarks of several tauopathies, including AD, PiD, CBD, and PSP. These novel antibodies will further enable investigation of tau-dependent pathological inclusion formation and enhance our understanding of the phosphorylation signatures within tauopathies with the possibility of new biomarker developments.

Oxide Inclusions in Aluminum-deoxidized Ultra-low CarbonSteel

RH (Ruhrstahl-Heraeus) degassing process was confirmed to be an effective method for making the steel cleaner by comparing the samples before and after RH degassing, mainly on the area of the total inclusion, the total number of inclusions, the mean area of inclusions, and inclusion size distribution. Four main types of inclusions including alumina and titanium oxides, and Al-Ti-O complex oxides were studied by analyzing their formation mechanisms, compositions, and morphology using SEM (scanning electron microscope) and EDS (energy-dispersive X-ray spectroscopy). Thermodynamic analysis through kinetic simulations of the different stages of RH degassing was conducted by the FactSageTM software package. Based on the equilibrium amount of oxides in the liquid steel, the effects of system temperature, oxygen contents, and alloy additions on the formation of inclusions and nozzle clogging were discussed to improve the steel’s cleanliness.

TiN Inclusions Formation in Ti-Al Deoxidized Ultra-low Carbon Steel

TiN inclusion in steel is easy to cause surface defects in ultra-low carbon steel. TiN was studied by analyzing their formation mechanisms, compositions, and morphology through SEM (scanning electron microscope) and EDS (energy-dispersive X-ray spectroscopy). Thermodynamic analysis through kinetic simulations of the different stages of RH degassing was conducted by the FactSageTM software package. TiN inclusions can distribute either randomly or in clusters with exogenous inclusions. Most of the TiN inclusions are regular cubic shapes. Some of them have a black center which is alumina inclusion. The alumina inclusions formed by reoxidation can catch TiN inclusions and combine with them because of the strong combining affinity between them. Ti is a strong nitride former in liquid steel, and TiN mostly forms during cooling or solidification. The maximum temperature is approximately 1, 430 °C. The growth of TiN inclusions can be controlled by adjusting the Ti and N contents (N< 30 ppm).

Irvine Welsh, Neoliberalism, and the Lumpenproletariat

Abstract: This essay demonstrates the continued critical value of Marx and Engels's idea of the lumpenproletariat for contemporary analyses of growing populations excluded from the recognized economy. Focusing on Irvine Welsh's work, I argue that the lumpenproletariat exposes the ideological continuities between marginalized groups and dominant classes. This relation is central to Welsh's fiction, which challenges the simple identification of the outsider and the radical. Welsh's insistence on the agency of the dispossessed extends existing models of the lumpenproletariat, enabling new, more inclusive forms of radical theory and practice.

Reflections on fluidity and stability: a look at the formality vs informality debate

PurposeThe distinction between formality and informality has been a topic central for many scholarly fields. Without rejecting the usefulness of this distinction, the authors argued that instead of analyzing an empirical situation in terms of what is formal and what is informal, it could sometimes be fruitful to focus on what is stable and what is fluid.Design/methodology/approachThis paper reports the results of review and analysis of secondary sources on the distinction between formality and informality, followed by a conceptualization of an alternative distinction between fluidity and stability. This conceptualization was inspired by a science and technology studies (STS) understanding of relations, and was assessed through applying it to a case of patient organizations’ participation in patient councils in Russia.FindingsStability and fluidity do not map neatly into formality and informality; rather, the stability and fluidity cut across these categories. The authors propose a view of both stability and fluidity as kinds of relations between elements of the societal fabric. The distinction proposed here could be especially fruitful when applied to analyses of (1) complex bureaucracies where formal requirements are extensive and potentially in conflict with each other and (2) oppressive situations where significant power imbalances exist.Originality/valueInstead of providing yet another line of demarcation between formality and informality, this paper proposes a shift in attention to what is stable and what is fluid. This novel distinction can help not only in discerning how things actually work but also in bringing to the fore hitherto unnoticed forms of creativity, responsiveness and inclusion.

The Power of Radical Place-Making Practices: Lessons Learned from ufaFabrik in Berlin

This article investigates ufaFabrik’s practice within Berlin’s urban context, which emerged from an occupation of an abandoned site and evolved into a long-term experiment in radical place-making. Through this case study analysis, it explores the role of radical place-making in shaping urban policy, focusing on the dimensions of decision, place and policy. Drawing on an expanded conceptualisation of place-making that embraces a radical perspective, the study is based on a Ph.D. programme and on extensive field research. ufaFabrik has given place-making a political meaning, challenging conventional urban planning in relation to ‘undecided’ spaces. This paradigm of place-making represents grassroots activism and insurgent action and it can catalyse both local and urban transformations. Through a critical analysis of the limits and possibilities of radical place-making practice, the article argues that the ufaFabrik offers valuable insights into the potential of participatory and community-led approaches to reshape urban spaces and promote more inclusive and sustainable forms of urban governance. The study highlights how the re-politicisation of urban issues emerges from conflict and challenges established power dynamics. It highlights the interconnection between ‘place’ and ‘making’, weaving experiential and generative elements into the urban discourse, highlighting its transformative potential and reconfiguration of decision-making dynamics.

Formation and aggregation behavior of inclusions in Ni-based alloys with different Mg contents

Large non-metallic inclusions affect the mechanical properties and service life of nickel-based superalloys. This study investigates the effects of magnesium elements on non-metallic inclusions in K4169 nickel-based superalloys, exploring the formation mechanisms and aggregation relationships of the inclusions. Four gradients of the magnesium content were used to simulate the erosion of MgO refractories on inclusions in the vacuum induction melting of nickel-based superalloys. The observed inclusions mainly comprised MgO, TiN, MgAl2O4, and MgAl2O4–TiN composites. To study the formation mechanism of inclusions in Ni-based alloys with different Mg contents, the predominance diagram of Mg–Al–Ti–O inclusions in nickel-based superalloy systems was calculated using Factsage thermodynamics software and classical thermodynamics separately. The aggregation behavior of MgAl2O4 and MgO inclusions on the surface of molten nickel-based superalloys was observed in situ under a high-temperature confocal laser scan microscope. The capillary force acting on inclusions in nickel-based superalloys was calculated using the Kralchevsky–Paunov model (K–P model), the calculation was verified with experimental results, and the influencing factors were analyzed. The capillary force acting on inclusions on the surface of molten nickel-based superalloys weakened in the order of MgAl2O4 > MgO > Al2O3, which is the opposite of the order for the force acting on inclusions in molten steel. Minimizing the magnesium content in the alloy is crucial to preventing the formation of large inclusions in nickel-based superalloys, and the use of magnesium-containing materials in the smelting process should thus be avoided.

Uncovering the Role of Natural and Synthetic Small Molecules in Counteracting the Burden of α-Synuclein Aggregates and Related Toxicity in Different Models of Parkinson's Disease.

A proteostasis network represents a sophisticated cellular system that controls the whole process which leads to properly folded functional proteins. The imbalance of proteostasis determines a quantitative increase in misfolded proteins prone to aggregation and elicits the onset of different diseases. Among these, Parkinson's Disease (PD) is a progressive brain disorder characterized by motor and non-motor signs. In PD pathogenesis, alpha-Synuclein (α-Syn) loses its native structure, triggering a polymerization cascade that leads to the formation of toxic inclusions, the PD hallmark. Because molecular chaperones represent a "cellular arsenal" to counteract protein misfolding and aggregation, the modulation of their expression represents a compelling PD therapeutic strategy. This review will discuss evidence concerning the effects of natural and synthetic small molecules in counteracting α-Syn aggregation process and related toxicity, in different in vitro and in vivo PD models. Firstly, the role of small molecules that modulate the function(s) of chaperones will be highlighted. Then, attention will be paid to small molecules that interfere with different steps of the protein-aggregation process. This overview would stimulate in-depth research on already-known small molecules or the development of new ones, with the aim of developing drugs that are able to modify the progression of the disease.