Homogeneous Form Research Articles

The Yearning to Be Everything to Everyone: Examining the Homogenization of Social Media Platforms in the Context of Convergence

Social media platforms are continually adding new features and enhancing existing ones to attract users and extend their screen time. These platforms constantly innovate to capture users' attention and gain an edge in the competitive landscape of social media. This study focuses on identifying the similarities between features of popular social media platforms and examines whether these similarities lead to homogenization. Specifically, presenting the chronological development of these features over time is crucial for understanding the historical development and evolution of social media. The framework of this research is based on the concept of convergence. The convergence concept is used to assess whether there are commonalities in the tools, interfaces, and interaction modes offered by the platforms to their users. In this context, the study investigates how the features provided by social media platforms become similar over time and how user experiences become homogenized. The 'walkthrough method' was employed to analyze the interfaces of the selected platforms. This method involves a step-by-step examination of user experiences on the platforms to understand how features are presented and how they are utilized by users. Data were collected through notes and recordings made by researchers while using the platforms. The results indicate a significant similarity and convergence in the features offered by popular social media platforms. For instance, features such as story sharing, live streaming, filter usage, and the explore tab have become widespread across different platforms. Platforms that consider users' habits and preferences offer familiar and easily accessible experiences through these similar features. Consequently, it can be said that social media platforms create a form of homogenization in user experiences by providing similar features over time. This phenomenon offers important insights into the evolution and future development of social media. Additionally, the study suggests that the concept of convergence not only encompasses the merging of features from different technologies but also indicates a tendency for similar platforms to converge internally.

Double-Ligand [Fe/PNP/PP3] and Their Hybrids [Fe/SiO2@PNP/PP3] as Catalysts for H2-Production from HCOOH

Two types of iron-based catalysts, [Fe/SiO2@iProPNP/PP3] and [Fe/SiO2@tBuPNP/PP3], for the dehydrogenation of formic acid (FADH), were synthesized. These catalysts were developed using a double-ligand approach combining a PNP ligand and a PP3 ligand, demonstrating functionality without the need for additional cocatalysts or additives. Furthermore, hybrid catalysts [Fe/SiO2@iProPNP/PP3] and [Fe/SiO2@tBuPNP/PP3] were created by covalently grafting PNP ligands onto SiO2 particles. The hybrid [Fe/SiO2@iProPNP/PP3] exhibited enhanced recyclability, with turnover numbers (TONs) exceeding 74,000. In situ ATR-FTIR and UV-Vis spectroscopies were used to monitor the structure and dynamics of the catalysts under catalytic conditions, revealing the formation of active catalysts through the involvement of all components: [Fe (metal)/PNP (first ligand)/PP3 (second ligand)/FA (substrate)], which are crucial to FADH catalysis. An Arrhenius study revealed that the hybrid [Fe/SiO2@iProPNP/PP3] had a lower activation energy (Ea = 42.5 kJ/mol) compared to its homogeneous counterpart (Ea = 48.2 kJ/mol), indicating superior catalytic performance. Conversely, [Fe/SiO2@tBuPNP/PP3] showed an increased activation energy (Ea = 48.3 kJ/mol) compared to its homogeneous form (Ea = 46.4 kJ/mol). This study discusses the differing roles of tBuPNP and iProPNP in catalyst configuration, highlighting the potential of double-ligand catalysts to enhance the performance and recyclability of PNP ligands in FADH, offering significant implications for the development of efficient and reusable catalytic systems.

Development of Continuous Additive-Controlled MSMPR Crystallization by DoE-Based Batch Experiments.

Additive-controlled crystallization is a promising method to improve crystal morphology and produce solid drug particles with the desired technological and pharmacological properties. However, its adaptation to continuous operation is a hardly researched area. Accordingly, in this work, we aimed to come up with a methodology that provides the systematic and fast development of a continuous three-stage MSMPR cascade crystallizer. For that, a cooling crystallization of famotidine (FMT) from water, in the presence of a formulation additive, poly(vinylpyrrolidone) (PVP-K12), was developed. Process parameters with a significant impact on product quality and quantity were examined in batch mode through a 24-1 fractional factorial design for the implementation of additive-controlled continuous crystallization. These batch experiments represented one residence time of the continuous system. Based on the statistical analysis, the residence time (RT) had the highest effect on yield, while the polymer amount was critical from the product polymorphism, crystal size, and flowability points of view. The values of critical process parameters in continuous operation were fixed according to the batch results. Two continuous cooling crystallization experiments were carried out, one with 1.25 w/wFMT% PVP-K12 and one with no additive. A mixture of FMT polymorphs (Form A and Form B) crystallized without the additive through five residence times (>6.5 h) with 70.8% overall yield. On the other hand, the additive-controlled continuous experiment resulted pure and homogeneous Form A product with excellent flowability. The system could be operated for >6.5 h without clogging with a 71.1% overall yield and a 4-fold improvement in productivity compared to its batch equivalent.

Multimaterial Metamaterials: Customize Targeted Thermal Deformation Modes Responding to Time- and Space-Variant Temperature Stimuli.

Customizing the engineering targeted thermal deformations is of vital significance for dimensional stability or shape morphing in materials and structures. However, current metamaterials are designed solely in the homogeneous form to respond only to the time-variant temperature (TVT) stimuli, far behind the practical engineering scenario and demands. Here, a new strategy is originally proposed and experimentally verified to design a series of both homogeneous and inhomogeneous multimaterial metamaterials, which uniquely output various thermal deformation modes, responding to time-variant and space-variant temperature (SVT) stimuli. Specifically, in addition to the regular isotropic thermal deformations, the metamaterials could exclusively output the entirely different positive and negative thermal deformations along the two orthotropic directions. Besides, stimulated by both TVT and SVT, the metamaterials provide more flexibility to customize the targeted thermal deformations. That is, the uniform thermal deformations could be well customized by the metamaterials stimulated by either TVT or SVT. More importantly, the customizability is remarkably broadened, as the nonuniform, specifically, mathematicized linear and nonlinear thermal deformations, are elaborately customized. Overall, these originally devised metamaterials open a new avenue for the purpose of customizing the engineering targeted thermal deformations in various modes under both TVT and SVT stimuli.

The Impact of Problem-Posing Learning Method on Critical Thinking Skills in terms of Self-Confidence

Elementary school students need help solving math description problems due to weak critical thinking skills. The need for appropriate learning methods for developing critical thinking skills and student self-confidence factors cause the low quality of the mathematics learning process. The purpose of this research is to test the effect of Problem Posing learning method on critical thinking skills in terms of students' self-confidence in mathematics learning. The research methodology applied was an experiment with a 2 x 2 design. The research sample was selected using Cluster Random Sampling with a total sample of 140 students. The research instruments used were the critical thinking skills test in the form of description test questions and the self-confidence questionnaire using the Likert scale. Data analysis began with prerequisite tests in the form of normality and homogeneity followed by two-way ANOVA hypothesis testing and the Tukey test as a further test with the help of SPSS statistical software. The results revealed that the critical thinking skills of students who were given Problem Posing treatment was higher than that of students who were given expository learning treatment; there was an interaction between learning methods and self-confidence in critical thinking skills, critical thinking skills in Problem Posing was higher than expository learning for students who had high self-confidence, and students who had low self-confidence in expository learning had higher critical thinking ability than Problem Posing learning. Based on the results of the study, it can be concluded that the Problem-posing learning method significantly affects critical thinking skills in terms of the self-confidence of elementary school students.

Suspension Bridge Estimation Method using the Fokker-Planck Model

The failure of the suspension bridge has been known since the beginning of the bridge collapse. Most of these failures form the basis of current engineering knowledge. One of the factors of failure is human-made factors related to the calculation of the bridge estimate. This paper presents an indirect estimation method using numerical simulation using finite elements by analyzing the Fokker-Planck model when dynamic excitation is associated with bridge loads. The results show that the Fokker-Planck model's homogeneous form can take into account the solution for the bridge analysis approach. It leads to a stable state when giving mass variations to the model. The indirect estimation method using finite elements can estimate the cable tension with controllable weak damping. It can be concluded that the method in this study is more accurate and convenient for the application technique.

Stage 2 Registered Report: Anomalous perception in a Ganzfeld condition - A meta-analysis of more than 40 years investigation

This meta-analysis is an investigation into anomalous perception (i.e., conscious identification of information without any conventional sensorial means). The technique used for eliciting an effect is the Ganzfeld condition (a form of sensory homogenization that eliminates distracting peripheral noise). The database consists of studies published between January 1974 and December 2020 inclusive. The overall effect size estimated both with a frequentist and a Bayesian random-effect model, were in close agreement yielding an effect size of approximately .08 (.04 -.12). This result passed four publication bias tests and seems not contaminated by questionable research practices. Trend analysis carried out with a cumulative meta-analysis and a meta-regression model with year of publication as a covariate, did not indicate sign of decline of this effect size. The moderators’ analyses show that the selected participants’ effect size was almost three-times that obtained by non-selected participants and that tasks that simulate telepathic communication show a two-fold effect size for tasks requiring the participants to guess a target. The Stage 1 Registered Report can be accessed here: https://doi.org/10.12688/f1000research.24868.3

Unusual enhancement of the radical production in the X-ray irradiated aqueous-organic systems containing W(VI) in homogeneous and nanoparticle forms

The metal and oxide nanoparticles (NPs) containing various elements with high atomic number (Z) are considered as prospective sensitizers for the production of radicals upon X-ray irradiation of aqueous solutions, which can be used for different applications in medical treatment and material modification. The common basis for the sensitizing effect in oxygen-free systems is concerned with increase of the absorbed dose due to the presence of high-Z atoms (known as physical enhancement, relatively insensitive to the NP size). In this work we report the first experimental evidence for extra enhancement of the radical yield in a model oxygen-free aqueous organic system irradiated with X-rays (45 kVp) in the presence of W(VI) compounds, both in homogeneous solutions of Na2WO4 and in the form of ultra-small NPs of WO3. Meanwhile, in the case of larger WO3 NPs the radical yield is consistent with physical enhancement mechanism. In the case of systems containing HfO2 NPs only physical enhancement was observed, independent of the NP size. Unusually large enhancement of radical production and size effect for W(VI) in homogeneous and NP forms was tentatively attributed to the radiation-chemical processes involving intermediate formation of metastable W(V) due to reactions of hydrated electron.

Wa-VP4* as a candidate rotavirus vaccine induced homologous and heterologous virus neutralizing antibody responses in mice, pigs, and cynomolgus monkeys

Group A rotavirus (RVA) is the primary etiological agent of acute gastroenteritis (AGE) in children under 5 years of age. Despite the global implementation of vaccines, rotavirus infections continue to cause over 120,000 deaths annually, with a majority occurring in developing nations. Among infants, the P[8] rotavirus strain is the most prevalent and can be categorized into four distinct lineages. In this investigation, we expressed five VP4(aa26-476) proteins from different P[8] lineages of human rotavirus in E. coli and assessed their immunogenicity in rabbits. Among the different P[8] strains, the Wa-VP4 protein, derived from the MT025868.1 strain of the P[8]-1 lineage, exhibited successful purification in a highly homogeneous form and significantly elicited higher levels of neutralizing antibodies (nAbs) against both homologous and heterologous rotaviruses compared to other VP4 proteins derived from different P[8] lineages in rabbits. Furthermore, we assessed the immunogenicity of the Wa-VP4 protein in mice, pigs, and cynomolgus monkeys, observing that it induced robust production of nAbs in all animals. Interestingly, there was no significant difference between in nAb titers against homologous and heterologous rotaviruses in pigs and mankeys. Collectively, these findings suggest that the Wa-VP4* protein may serve as a potential candidate for a rotavirus vaccine.

In Their Own Words: How Adolescents Use Social Media and How It Affects Them

The aim of this qualitative study was to uncover homogeneity (commonalities between adolescents), heterogeneity (differences between adolescents), and duality (differences within adolescents) in the relationship between adolescents’ social media use and well-being. To do so, 8 focus groups with 55 adolescents aged 14–17 were conducted. Anchored in the differential susceptibility to media effects model, we examined adolescents’ (1) individual motives and (2) moods leading to social media use, (3) the nature of this use, (4) their affective responses, and (5) perceived longer-term effects. Through deductive thematic analysis, we noted large homogeneity in motives for social media use but heterogeneity in moods leading to social media use. In addition, our findings revealed heterogeneity and duality in the affective responses and the perceived long-term effects of social media use. This duality, where the same individual is affected in both positive and negative ways by social media use, appeared in various forms: concurrently, when adolescents experience conflicting feelings simultaneously, such as feeling both envy and inspiration; alternately, when adolescents shift between experiences, such as feelings of connection and isolation; and sequentially, for example, where initial enjoyment gradually turns into boredom. Furthermore, duality appeared across different cognitive and affective aspects of well-being. Directions for future research are provided on how to examine the role and meaning of various forms of homogeneity, heterogeneity, and duality in the relationship between adolescents’ social media use and well-being.

Phenomenologies of loneliness: alone without you, alone without an us

Loneliness is not simply characterised by a lack of other people in one’s environment or lifeworld, but by a lack of specific forms of relationship, connection or belonging. In this paper I connect the conversation about different types of loneliness with debates happening in the philosophy of intersubjectivity, specifically the phenomenology of intersubjectivity. Philosophers of intersubjectivity tend to characterise experiences of direct encounter as having a second-personal ‘I-thou’ quality. By contrast, experiences of belonging tend to be characterised by first-person plural ‘we’ structures. In this paper I will compare and contrast some of the different phenomenological qualities that come with the absence or poverty of these two types of intersubjective structure respectively. These different types of loneliness are characterised by different phenomenological properties, but also by (the absence of) specific interpersonal and social structures. I argue that the absence of these different interpersonal structures respectively gives rise to loneliness as the experience of being unseen and loneliness as the experience of not-being-at-home. This is significant for loneliness studies, as understanding and combating loneliness is consequently likely to take variegated rather than homogeneous forms. This is particularly significant for a psychosocial approach to loneliness which seeks to understand, hold together and integrate both the structural features of loneliness (in this case the relevant interpersonal and social structures) and the lived experience of individuals and groups (in this case the phenomenology of loneliness).

A Solution of Fractal Dynamic Pharmacokinetics Problem

There are numerous uses for fractional differential equations in engineering, physics, and technology. A path for solving the fractal differential equations was examined, and its homogeneous form of was introduced. The notions of Riemann-Liouville fractional derivatives served as the foundation for the journey.. The solutions of the linear non-homogeneous fractal differential equations are given in detail.

Penyelesaian khusus persamaan diferensial biasa ordo dua linier tak homogen dengan koefisien konstan untuk fungsi bagian demi bagian

Spring mechanical vibration motion system with a damped degree of freedom and influenced by external forces, is mathematically expressed as an ordinary differential equation of order of two linear constant coefficients that are not homogeneous. If an external force acts on a stationary system expressed as a continuous function f(t) for any time t, then the system will experience mechanical vibrational motion which mathematically the equation of motion can be expressed as a superposition. The equation consists of as a solution to a homogeneous form with mechanical vibrations as a solution to a particular form. In terms of the particular solution this article will show a mathematical way when f(t) is a continuous function section by part which is defined at an interval, such that the mechanical vibration motion equation is at the same time a special solution of the equation the mechanical vibration system.
 Keywords: Vibration, Impulse Functions, ConvolutionMSC2020: 34A37

Capillary‐Driven Backflow During Salt Precipitation in a Rough Fracture

AbstractSalt precipitation is a crucial process occurring during CO2 injection into saline aquifers. It significantly alters the porous space, leading to reduced permeability and impaired injectivity. While the dynamics of precipitation have been studied within porous media, our understanding of precipitation patterns and permeability evolution within rough fractures remains inadequate. Here, we conduct flow‐visualization experiments on salt precipitation, wherein dry air invades brine‐filled rough fractures under various flow rate conditions. Our observations reveal that the precipitation pattern shifts from ex situ precipitation to homogeneous form as the flow rate (capillary number Ca) increases. Through real‐time imaging of the salt precipitation process, we determine that ex situ precipitation is due to capillary‐driven backflow. This backflow phenomenon occurs when previously precipitated salt, acting as a hydrophilic porous medium, attracts the brine flow backward. As a result, precipitation occurs at a location different from the original site. We further show that the impact of capillary‐driven backflow is significant at low flow rates and is gradually suppressed as the flow rate increases. We provide a theoretical estimation for the critical Ca for the occurrence of capillary‐driven backflow. As Ca is smaller than this critical value, backflow‐precipitation positive feedback causes fracture voids to become completely clogged, thereby leading to a more substantial permeability reduction. In contrast, a homogeneous precipitation pattern tends to only partially clog the fracture voids, causing a relatively smaller permeability reduction. This study enhances our understanding of the role of capillary‐driven backflow in controlling salt precipitation and permeability reduction in fractures.

Formulation and Antioxidant Activity Analysis of Jotang Herb (Acmella paniculata) Extract Mask Cream

Pollution in the environment can increase the production of reactive oxygen species (ROS), which can reduce the amount of antioxidants in the skin. Antioxidants are compounds that can inhibit oxidation reactions by binding to free radicals and reactive molecules. Herbaceous plant jotang (Acmella paniculata) has secondary metabolites such as flavonoids, alkaloids, tannins, and saponins, which can protect the internal and external organs of the body's cells from damage caused by free radicals on the skin. One of the treatment preparations used for the skin is a cream mask, as the use or application at the final level of skin care can improve cleanliness and health and stimulate and repair skin cells. This study aims to determine a formula that has a good antioxidant value using the DPPH method (2,2-diphenyl-1-pikrilhidrazyl). In this study, preparations were made with 3 formulas, namely Formula I (1% w/w), Formula II (10%w/w), and Formula 0 (Control). Evaluation of physical properties included organoleptic tests, homogeneity tests, spreadability tests, pH tests, viscosity tests, cream-type tests, and antioxidant tests. The result showed that the organoleptic test had a cream mask dosage in the form of semi-solid, distinctive jotang odor, light and dark green, had a homogeneous dosage form, spreadability around 5.1-5.7 with an average pH value of 6, had a good viscosity value and had a type of cream M/A and a high antioxidant value in formula II (10% w/w ) with an IC50 value of 21.959 μg/ml. Based on statistical tests, significant results were obtained of 0.000p (0.05) so that it can be interpreted that there was a significant difference in each concentration of jotang herb extract to the resulting IC50 value.

Stage 2 Registered Report: Anomalous perception in a Ganzfeld condition - A meta-analysis of more than 40 years investigation.

This meta-analysis is an investigation into anomalous perception (i.e., conscious identification of information without any conventional sensorial means). The technique used for eliciting an effect is the Ganzfeld condition (a form of sensory homogenization that eliminates distracting peripheral noise). The database consists of studies published between January 1974 and December 2020 inclusive. The overall effect size estimated both with a frequentist and a Bayesian random-effect model, were in close agreement yielding an effect size of approximately .08 (.04 -.12). This result passed four publication bias tests and seems not contaminated by questionable research practices. Trend analysis carried out with a cumulative meta-analysis and a meta-regression model with year of publication as a covariate, did not indicate sign of decline of this effect size. The moderators' analyses show that the selected participants' effect size was almost three-times that obtained by non-selected participants and that tasks that simulate telepathic communication show a two-fold effect size for tasks requiring the participants to guess a target. The Stage 1 Registered Report can be accessed here: https://doi.org/10.12688/f1000research.24868.3.

Testing for the ability to modify antibiotics of Panus tigrinus 8/18 Lentinus strigosus 1566 laccase.

In advanced biotechnology, the utilization of enzymes to achieve new or modified compounds with antibacterial, fungicidal, and anti-cancer specifications is crucial. Mushroom lactases are a hopeful biocatalyst for the synthesis and modification of different compounds. They are an accessible and inexpensive enzyme for the preparation of reaction objects and have recently received attention. Laccase purification was performed from basidiomycete Lentinus strigosus (LS) in several stages: Stage 1. On ion-exchange chromatography on TEAE Servacell 23 (400 ml), two distinctly separated laccase activity peaks were observed, eluted from the carrier at 0.21 and 0.27 M NaCl. In order to reduce the loss of enzymes, all fractions with laccase activity were collected, concentrated, and desalted using an ultrafiltration cell (Amicon, United States) with a UM-10 membrane. Stage 2. The resulting preparation with laccase activity was applied to a Q-Sepharose column (60 ml). Two well-separated peaks with laccase activity were obtained during the elution: laccase I (0.12 M NaCl) and laccase II (0.2 M NaCl). Stage 3. In the course of further purification of both enzymes, carried out on anion-exchange carrier Resource Q (6 ml), a broken gradient was used: 0 - 10%, 10 - 20%, and 20 - 100% with 1M NaCl. Stage 4. Both laccase I and laccase II, obtained after Resource Q, were desalted, concentrated to 1 ml each, and applied to a Superdex 75 gel filtration column. As a result, two laccases were obtained in a homogeneous form.

ТЕОРЕТИЧЕСКИЕ ИССЛЕДОВАНИЯ ДЛИНЫ ПЕРЕМЕЩЕНИЯ СТРУИ ЖИДКОГО НАВОЗА ПРИ ЕГО ПЕРЕМЕШИВАНИИ В НАВОЗОХРАНИЛИЩЕ

There on large livestock farms a nonbedding method of animals’ keeping is common. At such animals’ keeping, liquid and semiliquid manure is obtained. Such manure during storage into three fractions - upper, liquid and lower is stratified. The upper fraction surface contacts with the environment and therefore dries out and forms a crust. This manure heavier part, under the influence of gravity, settles to the manure storage’s bottom, forming a dense layer during prolonged storage. Thus, there in storage manure mass three fractions of different physical-and-mechanical properties are formed, for each of them extraction the different methods are used, by the corresponding machines implementing. As a result, the metal and energy consumption at manure extracting process by the manure storage is increased, and consequently, so as the agricultural products’ cost. The stored manure technological operation’s extracting can be reduced to an energy minimum by a homogeneous mass forming. This can be solved by the farm manure coming into the manure storage facility mixing. This operation can be implemented by the layers’ active movement by hydraulic or mechanical methods organizing. The hydraulic method only if liquid fractions without mechanical impurities presence at the pump entering by the impeller as working organ for they disable it at acting The most widespread mechanical method of manure fractions movement by a propeller agitator, forming a directional flow during rotation is carried out. These theoretical studies results concerning the liquid manure jet movement formed as a result the mixer agitator action in the medium of manure mass stored in a manure storage facility are presented. The relationship between the length of movement of the liquid manure jet, the angle of elevation of the blade’s helical line, this mixer diameter, its angular velocity and the mixer’s inclination in the relative to the horizontal plane has been established.

Intramolecular CH⋯π attraction mediated conformational polymorphism of constrained helical peptides.

In nature, biochemical processes depend on polymorphism, a phenomenon by which discrete biomolecules can adopt specific conformations based on their environment. However, it is often difficult to explore the generation mechanism and achieve polymorphic control in artificial supramolecular assembly systems. In this work, we propose a feasible thought for exploring the transformation mechanism of polymorphism in peptide assembly from the perspective of thermodynamic regulation, which enables polymorphic composition to be limited by switchable intramolecular CH⋯π attraction within a certain temperature range. Combined with the density functional theory calculations, we obtained thermodynamic theoretical data supporting the conformation transition and the underlying polymorphism formation principle. Afterward, we properly designed the peptide to alter the probability of CH⋯π attraction occurring. Then, we selectively obtained a homogeneous morphological form with corresponding molecular conformation, which further demonstrated the important role of molecular conformational manipulation in polymorphism selection. This unique template-based strategy developed in this study may provide scientists with an additional line of thought to guide assembly paths in other polymorphic systems.

Effectiveness of Assurance, Relevance, Interest, Assessment, and Satisfaction (ARIAS) Model on Students Self Efficacy Achievement

This study was motivated by the low self-efficacy of students in IPAS learning. This study aims to determine the effectiveness of the Assurance, Relevance, Interest, Assessment, and Satisfaction (ARIAS) model on the achievement of self efficacy in grade IV elementary school. The type of research used is Quasi Experimental using Nonequivalent Control Group Design. The study population was grade IV elementary school students in Gugus VI Koto Tangah District, Padang. The sampling technique used was Simple Random Sampling, obtained class IVA as the experimental class and class IVB as the control class at SD Negeri 28 Padang Sarai. This research instrument is a self efficacy questionnaire and data analysis techniques using prerequisite tests in the form of normality, homogeneity, and independent sample t test tests. Based on the results of the study obtained a significance value of Sig. 0.00 < 0.05, that H0 is rejected and H1 is accepted, which means that the effectiveness of the ARIAS model has a significant effect on the achievement of self efficacy of students in elementary schools. Learning with the ARIAS model makes students active in learning activities.