Microanatomy and ultrastructure of kidney interstitial cells and nephron in brown trout (Salmo trutta Linnaeus, 1758) at different stages of the life cycle

The study focuses on the microanatomy and ultrastructural changes in the trunk kidney interstitium cells and nephrons in parr, smolt and spawning brown trout Salmo trutta Linnaeus, 1758 sampled in Luga River and Solka River, the tributaries of the Baltic Sea. Regardless of the type of cells or their structure, there were changes in their areas and the number and structure of organelles responsible for the transport, synthetic and energetic function of cells. Our data on the morphology of the nephron combined with data on its physiology suggest a fundamental change in kidney function during the parr-smolt transformation before migration; this could be a preadaptation for a successful life in saltwater where urine output is sharply reduced. Thus, detected structural features of the trunk kidney in brown trout S. trutta are cytological markers of the migration process. The numbers of lymphocytes, neutrophils and eosinophils with segmented nuclei increased from parr to smolts and then to spawners; only monotypic specific granules in neutrophils were found in smolts and spawners. Cells with radially arranged vesicles were described for the first time in brown trout S. trutta renal interstitium. Their origin has not yet been established. The shape of these cells changed from spherical to trihedral during fish maturation. All the above ultrastructural changes of renal interstitium cells could be considered cytological markers of cell maturity.

Foucauldian Biopolitics, Irregular Immigrants and COVID-19 in Malaysia

This paper addresses issues related to irregular immigrants during the COVID-19 pandemic, with the aim of providing a better understanding of the migration process in Malaysia. This article uses Foucauldian biopolitics as a theoretical framework to explain state practices on immigrant bodies. Firstly, it provides a general picture of irregular immigration in Southeast Asia and Malaysia; secondly, it summarises the effects of the pandemic; and lastly it provides an overall outlook of irregular immigrants and the practices they were exposed to at this time. This study adopts exploratory and explanatory qualitative research design and data collection techniques such as document analysis of non-governmental reports on immigrants, official statistics, declarations and articles produced by third party organisations and interviews with experts. This paper then adopts a post-structuralist perspective within an interpretative paradigm to comprehend the main problems, social arrangements and rationality of institutional dynamics of the management of irregular immigrants. The main findings show that increasing human rights violations of irregular migrants generate from a biopolitical mentality.

Migration factors as a reflection of the state of society (analysis of migration process in the Republic of Crimea)

The author has made an attempt to determine the stimulating and restraining factors influencing both the dynamics and specifics of migration processes on the Crimean Region. The events of the Crimean spring have served as a key trigger of migration both to and from Crimea and in this sense the individual story of a migrating person allows for a deeper understanding of the reasons why people decide to leave Crimea or move to this region. This is the reason for the choice of the case-study method. The author systematizes the factors of migration. First of all, the factors of migration are divided into natural and social. All identified factors are divided into two large groups: stimulating and restraining. Among the stimulating factors natural factors prevail: climate, proximity to the sea, ecology and beautiful landscapes. It is important to note that they are joined by only one socio-cultural factor of migration: mental proximity and assessment of the prospects of the Crimean society in all its dimensions. Also all the stimulating factors are related to the current situation in Crimea. Among the restraining factors of migration the factors of social nature are predominant. They both arise in various spheres of social life and transform them. These include high prices for food, rent and purchase of real estate, services in the commercial sector, as well as sanctions and political and economic isolation. The restraining and stimulating factors of migration processes reflect both the problem areas in society and the directions of development.

Perceptual metric-guided human image generation

Pose transfer, which synthesizes a new image of a target person in a novel pose, is valuable in several applications. Generative adversarial networks (GAN) based pose transfer is a new way for person re-identification (re-ID). Typical perceptual metrics, like Detection Score (DS) and Inception Score (IS), were employed to assess the visual quality after generation in pose transfer task. Thus, the existing GAN-based methods do not directly benefit from these metrics which are highly associated with human ratings. In this paper, a perceptual metrics guided GAN (PIGGAN) framework is proposed to intrinsically optimize generation processing for pose transfer task. Specifically, a novel and general model-Evaluator that matches well the GAN is designed. Accordingly, a new Sort Loss (SL) is constructed to optimize the perceptual quality. Morevover, PIGGAN is highly flexible and extensible and can incorporate both differentiable and indifferentiable indexes to optimize the attitude migration process. Extensive experiments show that PIGGAN can generate photo-realistic results and quantitatively outperforms state-of-the-art (SOTA) methods.

Right to health for undocumented migrants in Mexico: from theory to practice in the context of the health system reform

Purpose Undocumented Central American migrants in Mexico are legally eligible for free access to the public health system through the new Instituto para la Salud y el Bienestar (INSABI) health program, but many experience structural vulnerability and stigmatization that prevent them from accessing health-care facilities. The purpose of this study is to investigate the discrepancy between the migrants’ Human Right to health, proclaimed by the Mexican Government and supposedly guaranteed by law, and the reality of the migration process. Design/methodology/approach This study reviewed relevant literature on the health risk factors, social and structural vulnerability, stigmatization and structural violence experienced by undocumented migrants as obstacles to their Human Right to health. It also reviews the current legal framework in Mexico and internationally. Findings This review demonstrates the lack of implementation of the current legal framework in Mexico and identifies a set of complex obstacles to effective access to health for undocumented migrants. Although the migration process itself was not found to be directly associated with major health issues, the social conditions of the migratory journey expose the migrants to serious threats, especially sexually transmitted diseases and tuberculosis. Practical implications This paper makes 10 practical recommendations for interventions collectively involving the state, international and civil organizations and the migrant community. These are especially relevant since the implementation of the INSABI health program in 2020. Social implications The paper lays the basis for influencing Mexican health system stakeholders to improve the health of migrants. Originality/value The sociological barriers to health access for undocumented populations in Mexico have not been fully explored. In addition, this paper provides a unique reflection on opportunities and challenges linked to the 2020 health system reform.

Oxidative Annulation of Diphenylpropanamides via In Situ Hypervalent Iodine-Promoted Intramolecular C–N/C–O Bond Formation

An aryl iodide catalyzed intramolecular oxidative transformation of diphenylpropanamide derivatives is described that can readily afford the C–N/C–O coupling products in a single step. The speed of the 1,3-aryl iodide migration process determines the diversity of target compound generation in this reaction. This straightforward approach can be performed with the use of inexpensive and readily available catalyst, transition-metal-free, mild conditions and good functional group tolerance.

Challenges of Return Migration to the Republic of Moldova in the Context of International Migration Flow

Return migration is one of the types of contemporary migration, gaining momentum in many countries of the world as a result of frequent economic, political and social conjunctural changes that have influenced migration as a phenomenon. As part of the migration process, return migration has been less studied, given the low intensity of this form of migration and the difficulty of quantifying returned migrants. The return and reintegration of returned migrants, regardless of the reason or the mode of return, is a challenge both for returnees and for the authorities of the receiving countries and requires action plans, well thought-out strategies in order to manage this process effectively and to encourage new flows of returnees. Through this study, the authors wish to analyse the phenomenon of return migration through the prism of its determining factors, to follow the effectiveness of instruments that stimulate the return migration, to analyse the experience of European countries in managing this type of migration as best practices.The use of classical and contemporary human geography research methods will allow the quantitative and qualitative assessment of return migration, the study being based on a sociological survey conducted with returnees following a migration experience.

Features of the Regulation of Labor Migration in Uzbekistan

Almost all countries of the world are involved in the migration process, and Uzbekistan is no exception. While our country is involved in the international migration process, including labor migration, one of the main factors is the large number of young workers and the underdeveloped domestic labor market. Therefore, our citizens are working abroad in the world labor market.

Theorising violence in mobility: A case of Nepali women migrant workers

In this article, I examine violence as constitutive of mobility for the feminine diasporic subject through an examination of women migrant workers from Nepal. I frame this project with two distinct theoretical approaches to understanding violence. First, I draw upon Catharine MacKinnon's provocative question ‘Are women human?’ to elucidate points of disjuncture between individual women migrants and state policy that dehumanises them. Second, I address some of the gaps in MacKinnon's work by turning to Judith Butler's theory of violence as primarily embodied in the corporeal subject. Drawing on 30 in-depth interviews with returned women migrant workers, I examine three moments in the migration process that demonstrate how violence operates ubiquitously in and through circuits of mobility. I conclude that by putting Butler's and Mackinnon's approaches to violence in dialogue and examining the Nepali case through a dialectic framework, intriguing possibilities for approaching migration and its problematics are revealed.