Media Environment Research Articles

Ratiometric fluorescence sensing and discrimination of tetracycline analogs by using coumarin-embedded Eu-MOF nanosensor

As widely used antibiotics, tetracycline residues exist in food and environmental media, which pose certain hidden dangers and negative effects on public health. Therefore, the sensing and discrimination of tetracycline analogs (TCs) have great significance for improving food safety and preventing environmental pollution. Herein, a 7-hydroxycoumarin-3-carboxylic acid-embedded Eu-MOF (HC@Eu-MOF) material was constructed and then developed for the detection of TCs. Upon addition of TCs, the synthesized sensor displays opposite fluorescence changes at two different wavelengths due to the simultaneous presence of the inner filter effect (IFE) and the antenna effect (AE), and achieves a stable ratio signal response within 90 s. In addition, six important tetracycline analogs, including chlortetracycline (CTC), oxytetracycline (OTC), tetracycline (TC), metacycline (MC), doxycycline (DC) and demeclocycline (DMC) can be discriminated with 100 % accuracy through the principal component analysis even in extremely complicated mixtures. Further, a smartphone-assisted portable device was applied for visual sensing of TCs. The as-developed platform possessed the characteristics of simple synthesis, fast response, high sensitivity, and high stability, which further lays a further foundation for the on-site visual detection and discrimination of TCs in real samples.

The Blame Game: The Role of Media Environments and Political Discussion in Americans’ Attribution of Blame for Interparty Hostility

Abstract Polarization and hostility between political parties is a dominant feature of politics in the United States and is growing in many other democracies worldwide. Yet, there remain questions of who the public blames for this hostility and how those attributions of blame emerge. This study examines the role of partisan strength, political media exposure, and political discussion on blame for partisan hostility. Analyses of survey data (YouGov) collected during the 2020 U.S. presidential election suggest that political discussions play a particularly strong role in shaping attributions of blame, while partisan strength and political media exposure are relatively less influential. The data also indicate that who one talks to about politics matters for placing blame, as conversations with like-minded partisans lead to more blame placed on the out-party and less blame on the in-party, whereas political discussions with people who hold different views can temper out-party blame. Overall, findings suggest that political discussion may matter more than political media exposure for attributions of blame for partisan hostility.

Digital Communication Crisis: The Case of Patiswiss Brand

Developments in information and communication technologies have intensely changed the way individuals communicate. The increase in technological innovations has led to the emergence of some risks for businesses, as well as the advantages it offers. Chief among these risks is that individuals have begun to easily express their expectations and complaints -especially in the context of the products they buy and use- through social media platforms where interaction and content sharing are possible. An individual who spends a significant amount of his time in the digital environment is both exposed to the content created by other users and can have an impact on many people by producing content. Under these conditions, social media environments and consumers/customers who use these environments intensively have positive effects on companies and brands at a level that will increase sales, and negative effects at a level that may cause a crisis. Managing technology-mediated communication environments is important in terms of managing such effects. The aim of this study is to reveal how the crisis is managed and/or attempted to be managed through digital media, within the framework of the need to manage the crisis that emerges through a content, issue, event that comes to the fore regarding the company(ies) in the digital media and spreads rapidly among the masses. In the study, which focused on digital communication, crisis management was discussed through a case study of the Patiswiss brand over the series of events that broke out in April 2024. The headlines and spots of the news published in the digital environment regarding the crisis process, developments and resolution of the crisis were analyzed through 5W1H. As a result, it has been observed that the communication language was transformed by developing a successful strategy after the attack and threat based communication method used in the beginning.

The (im)possibility of communication with nonhuman beings: with digital screen printing of luminous bacteria

In the current media environment, John Durham Peters emphasizes the importance of non-verbal communication and notes that underpinned by digital technology, “media” is returning to its original meaning as the milieu that surrounds living beings. To concretize and critically discuss this idea, this paper examines the artworks created by the authors, which incorporate microorganisms into digital technology. These works applied luminous bacteria as ink to digitally screen print text and images. The first work, A Medium for Images or Luminous Bacteria (2022), prints Japanese text with luminous bacteria ink. The second work, ‘イ(I)’ (1926) by BioLuminescent Bacteria (2024), recreates the first image in the history of Japanese television, ‘イ(I)’, with luminous bacteria. This paper compares and analyzes these practices in light of classical media theory, including the work of William Ivins Jr. and Marshall McLuhan. The paper introduces another work, Grow.|Glow. (2023), to further expand the discussion to contemporary digital media. Finally, drawing on the recent arguments of Anna Tsing and Antonio Damasio, we elucidate the critical implications that the works of luminous bacteria bring to the current media environment.

Media as an instrument of Russia's information policy

This article explores the role of the media in the implementation of the state information policy, as well as the possibility of domestic media to become a key tool in the information confrontation with unfriendly countries. Among the main threats in the Doctrine of Information Security of the Russian Federation is the increase in the use of information-psychological influence technologies by intelligence services of certain states, aimed at destabilising the internal political, social and economic situation in various regions of the world, leading to the undermining of sovereignty and violation of territorial integrity of other states. The influence of the media on mass consciousness remains, without exaggeration, extensive, despite the radical changes in the landscape of the media environment caused by the spread of the Internet. In the era of digitalisation, the information space is undergoing significant transformations, which also concern the methods of media influence on mass consciousness. The Internet, having become a global communication platform, has provided the media not only with new channels for content distribution, but also increased their influence through personalisation and algorithmic filtering of information. The author examines the methodology and principles of information flows application in the context of information warfare. The author also analyses the use of media not only as an information intermediary, but also as a conduit of values, ideology and positive image of Russia.

Research on the corrosion mechanism of Q345R steel under water-oil two-phase flow with the HCl and NH4Cl corrosive medium in low-temperature system of petrochemical plants

The serious corrosion failure phenomenon of HCl and NH4Cl in the water-oil two-phase flow are usually occurred in the low-temperature system of petroleum refinery facilities. In this paper, the corrosion mechanism of these corrosive medium in two-phase flow environment was investigated in detail by using corrosion weight loss, electrochemical measurement methods, surface analysis techniques, and numerical research methods. The results indicate that the corrosion rate of Q345R steel in an HCl-NH4Cl coupling medium falls between the rates observed with each medium alone. The stirring of the corrosive fluid creates an unstable oil-in-water emulsion. The formation of an oil film on the surface of Q345R steel slows down the corrosion process and alters the surface corrosion morphology when the oil phase was not originally present. Increasing the proportion of the water phase accelerates the corrosion rate, and the stronger wettability of the oil phase makes the loose γ-FeOOH products easier to cover the surface, which can effectively prevent the mass transfer and corrosion reaction process.

Ideological self-selection in online news exposure: Evidence from Europe and the US.

Today's high-choice digital media environments allow citizens to completely refrain from online news exposure and, if they do use news, to select sources that align with their ideological preferences. Yet due to measurement problems and cross-country differences, recent research has been inconclusive regarding the prevalence of ideological self-selection into like-minded online news. We introduce a multi-method design combining the web-browsing histories and survey responses of more than 7000 participants from six major democracies with supervised text classification to separate political from nonpolitical news exposure. We find that political online news exposure is both substantially less prevalent and subject to stronger ideological self-selection than nonpolitical online news exposure, especially in the United States. By highlighting the peculiar role of political news content, the results improve the understanding of online news exposure and the role of digital media in democracy.

Does the Losing Side Lose the Democratic Faith? Partisan Media Flow and Democratic Values During the 2020 U.S. Presidential Election

ABSTRACT This study examines the relationship between partisan media consumption and changes in democratic values during the 2020 U.S. Presidential Election. By integrating self-reported news consumption data with the partisan slant of news outlets, we explore how different media environments shape voters’ attitudes about democracy. Our analysis of a two-wave panel survey conducted before and after the election reveals significant changes in democratic values among general voters, including both Biden and Trump supporters. The findings also highlight the complex effects of a polarized media ecosystem on political beliefs, demonstrating that partisan media flow influences democratic values beyond the traditional winner-loser dichotomy.

Environmental safety performance dynamics and estimation of the deterioration of leachate containment elements: Implications for the lifespan of hazardous waste landfills

In the coming decades, the failure and expiration of over 100,000 landfills involving billions of tons of waste not only threaten global water security but also lead to a sudden increase in the global demand for solid waste disposal. Therefore, further research is needed on the ways in which landfill performance is degraded, their life expectancy, the factors that influence them and the ways in which they are influenced. A study estimated the performance degradation and expected lifespan of a modern hazardous waste landfill in China. The landfill experienced slow performance degradation in early years (0–12 years). But during mid-term (12–62 years) due to the rapid degradation of the liner material, the rate of leakage from the containment layer will increase by a factor of 4.8–27.1, leading to its earliest failure after about 38 years. This indicates the need for measures to prevent rapid performance degradation in the middle of the landfill's service life and to strengthen monitoring of performance indicators and environmental medium pollution in the later period (after 62 years) to respond to potential scrapping and pollutant leakage problems. Differences in construction quality and regional climate can cause differences in the lifespan of landfill facilities by up to 20 and 30 times, highlighting the importance of scenario-based failure and lifespan prediction for designing reasonable monitoring plans and preparing response measures to prevent potential groundwater pollution and to meet the sudden increase in demand for secondary waste disposal.

6-PPD quinone at environmentally relevant concentrations induced damage on longevity in C. elegans: Mechanistic insight from inhibition in mitochondrial UPR response

6-PPD quinone (6-PPDQ) exists widely in water environment media, causing acute lethality to some aquatic species. Long-term exposure to 6-PPDQ reduced the lifespan of Caenorhabditis elegans. However, the molecular basis for mitochondrial control of 6-PPDQ toxicity remains largely unclear. Using HSP-6 as marker of mitochondrial unfolded protein response (mt UPR), we observed activation of mt UPR by 0.1 and 1 μg/L 6-PPDQ and inhibition in mt UPR by 10 μg/L 6-PPDQ. Additionally, increased atfs-1, ubl-5, and dve-1 expressions were caused by 0.1 and 1 μg/L 6-PPDQ and decreased expressions of these genes were induced by 10 μg/L 6-PPDQ. Neuronal and intestinal RNA interference (RNAi) of hsp-6 caused susceptibility to 6-PPDQ toxicity on longevity, and atfs-1, ubl-5, and dve-1 acted in neurons and intestine to modulate mt UPR and 6-PPDQ toxicity on longevity. Meanwhile, 6-PPDQ (1 and 10 μg/L) increased expressions of histone methyltransferase genes met-2 and set-6, and decreased expressions of histone demethylase genes jmjd-1.2 and jmjd-3.1. Neuronal RNAi of set-6 and intestinal RNAi of met-2 accelerated hsp-6, atfs-1, ubl-5, and dve-1 expressions and extended lifespan of 6-PPDQ exposed nematodes. In contrast, neuronal RNAi of jmjd-1.2 and jmjd-3.1 and intestinal RNAi of jmjd-1.2 suppressed these 4 gene expressions and reduced lifespan of 6-PPDQ exposed nematodes o. In nematodes, RNAi of hsp-6 could also enhance mitochondrial dysfunction and mitochondrial reactive oxygen species (ROS) induced by 6-PPDQ. Therefore, 6-PPDQ caused damage on longevity was associated with suppression in mt UPR, which was under regulation of certain histone methylation related signals.

Silver decorated zeolite embedded in bionanocomposite hydrogels based on cross-linked carboxymethyl cellulose for excellent catalytic hydrogenation of azo dyes

Herein, bionanocomposite beads based on Carboxymethyl cellulose/Dextrant sulfate (CMC/DS) embedding silver nanoparticle-functionalized zeolite (AgZ) were developed and proposed as catalysts for catalytic hydrogenation of Direct Red 16 (DR16) azo dye under different experimental parameters. The obtained results showed that AgZ incorporation into the polymer matrix produced highly porous structures with improved thermal stability. For antibacterial application, it was shown that the engineered bionanocomposites were effective against all tested bacteria. The CMC-DS-AgZ catalysts showed good catalytic performances for the hydrogenation of DR16 in various real-life water samples and even in presence of several mineral salts, however with a high efficiency (99 %) obtained for the catalyst prepared at elevated AgZ content (with a kapp rate constant of 0.239 min−1). Moreover, the hydrogenation study of various azo dyes highlighted the satisfactory application potential of the catalysts and their versatility. The catalyst beads showed good recyclability for five successive cycles without any significant loss of efficiency or stability. The proposed mechanism for DR16 catalytic hydrogenation on C3-D1-AgZ revealed that AgZ could enhance the catalytic activity of the beads by facilitating the formation of AgH intermediates. Finally, the green synthesized materials were shown to be viable and potential candidates for the purification of environmental media.

Metabolomics combined with physiology reveal how white clover (Trifolium repens L.) respond to 6PPD stress

As a ubiquitous tire antioxidant, N-(1,3-Dimethyl-butyl)-N′-phenyl-p-phenylene- diamine (6PPD) exists widely in various environmental media and has been detected at high levels in the environment. However, the effects of 6PPD on plants are still poorly understood. In this study, a hydroponic experiment was carried out to investigate the response of white clover (Trifolium repens L.) stressed by 6PPD on physiology and metabolomics. The results indicated that the length of stem and root, as well as biomass were significantly reduced after 500 μg L−1 6PPD treatment. Photosynthetic performances including photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration (Ci), transpiration rate (Tr) and chlorophyll content of leaves decreased in all treatments except 500 μg L−1 of 6PPD. The malondialdehyde (MDA) content in the shoot of white clover increased by 66.33 % when exposed to 500 μg L−1 of 6PPD compared to control group (CK). Hydrogen peroxide and superoxide anion presented a U-shape trend and began to increase at 500 μg L−1. Besides, peroxidase and catalase significantly decreased compared to CK after exposure to 500 μg L−1. Metabolic analysis of clover showed that 6PPD treatment induced changes in 10 metabolic pathways of white clover. Metabolites were significantly down-regulated after exposure to 500 μg L−1 in shoot, while significantly down-regulated in all treatment groups except 500 μg L−1 in root. These findings may provide a novel perspective for phytotoxicity assessment and phytoremediation of 6PPD.

The influence of public awareness on public participation in environmental governance: Empirical evidence in China

Abstract Public participation in environmental governance is conducive to alleviating environmental pollution. In order to mobilize the enthusiasm of public to participate in environmental governance, based on the CGSS samples oriented to the whole China, we analyze the influence of public awareness on four kinds of public participation in environmental governance: consciousness participation, inducement participation, input participation and ex-post participation. The results show that environmental risk awareness and media usage awareness have positive effects on four kinds of public participation behaviors. The public with a frugal lifestyle in daily life tend to choose inducement participation. Governmental interaction awareness promotes public participation in environmental governance, especially the input participation behavior. The public with a positive legal awareness tends to opt for ex-post participation. Unobstructed channels of environmental rights protection and higher level of environmental cognition are important factors to promote public participation in environmental governance. However, the public's low evaluation of the government environmental governance and the public's pursuit of short-term economic interests will lead to the reduction of participation enthusiasm. The results have passed the endogenous test and robustness test. As the real environmental governance of the local government is not always consistent with the public's evaluation of the local government's environmental governance, the inconsistency may influence the public participation in environmental governance.

Using Psychological Reactance and Bandwagon Cues to Explain High School Sports Coaches’ Resistance to Concussion Communication Policies

Sport-related concussions (SRC) are a significant health risk for athletes amalgamated by issues with underreporting. Coaches play a pivotal role in promoting safety and health, but coach-player SRC communication efforts have been insufficient at improving players’ reporting behaviors. This study considers coaches’ responses to a proposed mandate to engage in SRC communication with athletes via psychological reactance theory (PRT), with bandwagoning cues positioned as a form of social proof that heightens or mitigates persuasion. Two hundred five coaches from 20 distinct sports were exposed to one of four messages addressing a proposed SRC management policy mandating biweekly coach-player communication about SRCs. The message variations incorporated different bandwagon cues (positive, negative, absent, mixed), manipulated through user comments and emoji reactions on a simulated social media environment. Results demonstrate direct and mediated relationships between exposure to negative bandwagon cues, bandwagon perceptions, freedom threat, reactance, and opposition intentions. Our findings provide valuable insights into the dynamics of coaches’ attitudes towards SRC communication in a social media context, bridging gaps in the literature and introducing PRT to the SRC domain.

How Enzyme Selectivity and Immobilization Affect Catalytic Yields in Lipase-Catalyzed Processes

Abstract: Herein, the influence of structural attributes, including the interactions of lipases with support systems, substrates, products/byproducts, and the media environment, on enzyme stability, selectivity and activity are discussed. Substrates/products, such as methanol, glycerol, phenolic acids and polyphenols, can inhibit lipase activity by influencing the mass flow of the reactants and products or by enzyme denaturation, which is also caused by extreme pH, high temperatures, and digestive action of most organic solvents. Immobilization techniques that involve chemical bonding between the functional groups of the support and the amino acids of the lipase maintain the enzyme’s active conformation via the formation of stable secondary structures. Functionalized metal nanoparticles and metal and covalent organic frameworks (COFs and MOFs) covalently bond to lipases, reducing the reliance of the active site conformation on hydrogen bonding and disulfide bonds. The crystallinity of COFand MOF-immobilized lipases allows them to be used in contrasting media environments and at high temperatures, which increases the reaction kinetics and improves the catalytic yield. On the other hand, inert support systems such as silica promote catalytic yields by minimizing protein leaching, which fairly maintains the amount of the preloaded lipase. The structure of substrates also plays a large role, whereas some lipases strictly prefer narrow substrates. In contrast, others, such as Candida species lipases, are liberal and allow substrates of varying bulkiness/steric hindrances.

Growth Performance, Survival Rate and p38 Mitogen-Activated Protein Kinase of Giant Gourami Fry (Osphronemus gouramy) on Different Temperature Levels

The low survival value of gourami fish juvenile is because gourami is easily stressed. Changes in temperature in the rearing media environment can affect fish life and can even cause stress. Cortisol and blood glucose are indicators of early stress in fish which then naturally respond to the presence of environmental stressors by producing stress proteins such as mitogen-activated protein kinases (MAPKs). The purpose of this study was to analyze changes in growth, survival and p38 MAPKs of gourami fish juvenile reared at different temperatures. The working method used in this research is the experimental method. This research was conducted with 3 treatments and 3 replicates. The treatments given include (A) 27°C temperature treatment, (B) 29°C temperature treatment, (C) 31°C temperature treatment. Observations made were measurements of growth, survival, and p38 MAPK levels as well as physical and chemical parameters. The results of this study indicate that 31°C is the best temperature for gourami, the expression of p38 MAPK shows low distribution characterized by little brown color, survival rate of 80%, length growth of 1.8-2cm and daily growth rate of 0.21 g/day. During the study the pH in the treatments ranged from 7.3-8.1, while oxygen levels ranged from 4.2-7.7mg/l.

Kebijakan Hukum Dalam Menghadapi Lesbian, Gay, Biseksual dan Transgender (LGBT) Sebagai Suatu Penyimpangan Perilaku di Indonesia

Deviant behavior in the form of Lesbian, Gay, Bisexual and Transgender (LGBT) seems unavoidable. This behavior can target children, teenagers and even adults. With this phenomenon, it has negative impacts on community life. The problem is getting stronger when the phenomenon is published through social media and television shows. At least there are perpetrators of LGBT couples and other LGBT actions in Indonesia. This study uses a research method that is a normative legal research type. In normative legal research, the data used is secondary data. The secondary data contains primary legal materials, secondary legal materials and tertiary legal materials. Then the materials that have been collected are analyzed using a statute approach and a case approach. This study answers a problem, namely first. The implications of LGBT behavioral deviations in Indonesia can have an impact on the health, social, education and security of the Indonesian state. The factors can be caused by internal factors originating from oneself and the family environment and external factors originating from the external environment and social media and television or community groups and second. In the provisions of the existing laws and regulations, there are limits for LGBT, although they are not regulated concretely and explicitly, and future regulations will regulate deviant behavior for LGBT groups who intentionally commit sexual harassment in public, but there is still a need for comprehensive regulations that regulate LGBT.

Identifying Quinones in Complex Aqueous Environmental Media (Biochar Extracts) through Tagging with Cysteine and Cysteine-Contained Peptides and High Resolution Mass Spectrometry Analysis.

Quinones are among the most important components in natural organic matter (NOM) for redox reactions; however, no quinones in complex environmental media have been identified. To aid the identification of quinone-containing molecules in ultracomplex environmental samples, we developed a chemical tagging method that makes use of a Michael addition reaction between quinones and thiols (-SH) in cysteine (Cys) and cysteine-contained peptides (CCP). After the tagging, candidates of quinones in representative aqueous environmental samples (water extractions of biochar) were identified through high-resolution mass spectrometry (HRMS) analysis. The MS and UV spectra analysis showed rapid reactions between Cys/CCP and model quinones with β-carbon from the same benzene ring available for Michael addition. The tagging efficiency was not influenced by other co-occurring nonquinone representative compounds, including caffeic acid, cinnamic acid, and coumaric acid. Cys and CCP were used to tag quinones in water extractions of biochars, and possible candidates of quinones (20 and 53 based on tagging with Cys and CCP, respectively) were identified based on the HRMS features for products of reactions with Cys/CCP. This study has successfully demonstrated that such a Michael addition reaction can be used to tag quinones in complex environmental media and potentially determine their identities. The method will enable an in-depth understanding of the redox chemistry of NOM and its critical chemical compositions and structures.

Optimized liquid chromatography-tandem mass spectrometry protocol for enhanced detection of 45 pesticides in water and soil samples.

The development of analytical screening techniques for pesticides is crucial for preventing and mitigating environmental contamination. Mass spectrometry-based screening methods differ based on the complexity of the sample matrix and the diversity of the target compounds. One of the major challenges is balancing cost reduction in the extraction process with the optimization of analytical results. This protocol introduces a universal and efficient scheme for the qualitative and quantitative schemes for 45 pesticides within a single analytical run. Water samples were extracted using an SPE column, with the pH adjusted to 7. Soil samples were processed using a modified QuEChERS method. The pretreatment for water samples emphasized selecting appropriate SPE columns and optimizing pH, while for soil samples, the focus was on choosing suitable extraction solvents and extraction salt packages. The enriched samples were then analyzed using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The method was evaluated for accuracy, precision, detection limits, and matrix effects. The method enabled the simultaneous detection of 45 pesticides within a 15-minute analysis period. SPE recoveries ranged from 56.1% to 118.8%. Instrumental detection limits varied between 0.02 and 1pg, while method detection limits extended from 0.05 to 18.47 ng/lin soil and water matrices. The approach was successfully applied to water and soil samples, with the pesticide concentration ranging from 0.1ng/L to 38 μg/L. The protocol substantially enhances the characterization and quantification of 45 pesticides in environmental samples, achieving a remarkable reduction in detection limits by an order of magnitude compared to previous research. This method enables the simultaneous detection of pesticides in both water and soil matrices using a single system, addressing the challenges of using separate systems for different environmental media. Furthermore, this protocol provides a crucial theoretical foundation for managing and safeguarding against pesticide pollution.

Pengaruh Penggunaan Media Sosial Instagram Terhadap Pemahaman Akhlak pada Mahasiswa PAI Angkatan 2021 di Universitas Ibn Khaldun Bogor

Understanding morals is one of the important components that students must have in an effort to deepen their knowledge and values ​​of Islamic teachings as the basis of a Muslim's knowledge. There are two factors that can influence each individual's understanding of morals, namely internal factors and external factors. Internal factors come from within students such as thought patterns, attitudes and self-motivation. Meanwhile, external factors include family, school, social environment and social media. Support for achieving understanding of student morals through the social media Instagram can be obtained if students have the ability to act and behave critically, carefully, wisely, think objectively and appreciate the diversity of Islamic information obtained. This research aims to find out whether there is an influence of the use of Instagram media on students' understanding of Islam at Ibn Khaldun University, Bogor. The research method used is a quantitative method. The data collection techniques used were questionnaires and documentation. The analysis technique used by researchers is an inferential statistical analysis technique with an analysis stage in the form of an analysis prerequisite test stage consisting of a normality test and linearity test, hypothesis testing consisting of a simple linear regression analysis test and a t test with the help of the SPSS version 27 application. Results from Research shows that there is an influence of the use of social media on the understanding of morals of PAI students class of 2021 at Ibn Khaldun University, Bogor. The magnitude of the influence that social media has on Islamic understanding shows a figure of 17.9%. Social media has an influence in shaping students' understanding and behavior regarding morals. Students who have good personalities and are not easily influenced by anything can determine their understanding of the information received via Instagram social media.