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English as a foreign language is taught almost exclusively as a school subject in most parts of the world. However, reported in this autoethnography is our practice in family language planning in English as a foreign language (non-native to either parent). The personal narratives of our bilingual parenting experience focus on our decision making process, the concerns we encountered, our bilingual parenting practices, and our reflections on this journey. Our lived experiences shared in this study serve to shed light on such issues in family language planning as the formation of parental language ideology, the process of family language policy making, and the emotionality of bilingual parenting practice.

In the past decade, there has been a rapid increase in the number of Chinese international students studying overseas. There has also been a corresponding increase in the media stories about their cross-cultural difficulties. Reported in this study is a reflective inquiry into my work as an international student advisor with a large number of Chinese students in a top Canadian university. Through five composite stories, I hope to present a few areas of challenges Chinese students experience and reflect on how advisors can better support them from the intercultural perspective. I also hope to engage other advisors through this study in exploring ways to contribute to the field of international education as frontline practitioners.

Current student development theories are mostly grounded in the experiences of domestic students in North America. The increasing portion of the international students in the post-secondary student population has created a glaring gap for a unique theory of international student development. A unique theory for international student development, with a focus on their intercultural learning experiences, will serve as a necessary theoretical foundation for international student programmes and services that are offered in most hosting universities of international students as an overlay on top of general student services. Through a critical review of existing literature, this paper endeavours to develop a coherent theory of international student development that endorses a critical and post-structural approach to the key issues of intercultural identity, intercultural competence and intercultural adaptation for international students. [ABSTRACT FROM AUTHOR]

Aging in mammals is accompanied by an imbalance of intestinal homeostasis and accumulation of mitochondrial DNA (mtDNA) mutations. However, little is known about how accumulated mtDNA mutations modulate intestinal homeostasis. We observe the accumulation of mtDNA mutations in the small intestine of aged male mice, suggesting an association with physiological intestinal aging. Using polymerase gamma (POLG) mutator mice and wild-type mice, we generate male mice with progressive mtDNA mutation burdens. Investigation utilizing organoid technology and in vivo intestinal stem cell labeling reveals decreased colony formation efficiency of intestinal crypts and LGR5-expressing intestinal stem cells in response to a threshold mtDNA mutation burden. Mechanistically, increased mtDNA mutation burden exacerbates the aging phenotype of the small intestine through ATF5 dependent mitochondrial unfolded protein response (UPRmt) activation. This aging phenotype is reversed by supplementation with the NAD+ precursor, NMN. Thus, we uncover a NAD+ dependent UPRmt triggered by mtDNA mutations that regulates the intestinal aging. How age-accumulated mtDNA mutations in the small intestine modulate intestinal homeostasis is unclear. Here, the authors show that increased mtDNA mutation burden triggers an ATF5 dependent UPRmt by NAD+ depletion, and thus regulates intestinal aging through impaired Wnt/β-catenin signaling. [ABSTRACT FROM AUTHOR]

Discussed in this article are the different governance models in international student services in Canadian and Chinese universities. Informing this study were 39 international student service providers from 38 top Chinese universities while interacting with their Canadian counterparts in a professional development program in Canada. The derived comparative data serve to show that a reactive decentralized model is used in international student services in Canada, while practiced in China is a more centralized proactive model. Although both models are rooted in their own social and cultural contexts, mutual learning is possible to some extent. The article ends with some discussion about possible ways Canadian universities can borrow from the Chinese system.

During the Early-Middle Ordovician, the Upper Yangtze Platform experienced extensive development of a distinctive set of mixed siliciclastic-carbonate deposits known as the Meitan Formation. To conduct a comprehensive study of the relationship between mixed sedimentation and sea-level changes, the Hailong section, situated at the southwest margin of the Upper Yangtze Platform in SW China, was selected as the study area due to its typical mixed sedimentary sequence. This section was effectively compared with sections in other regions. Clustering analysis of the point-count groups from the Honghuayuan and Meitan Formations revealed nine microfacies that developed during this period. Such a diverse range of microfacies provides the evidence of frequent sea-level changes in the Yangtze Platform throughout this period. Specifically, two sea-level rises were identified during the early TS.2b and early TS.3b, with the early TS.2b event occurring globally. Furthermore, four sea-level falls were observed in the late TS.2b, TS.2c, TS.3a, and late TS.3b periods. The late TS.2b sea-level fall was globally significant. From TS.2c onwards, distinct variations in sea-level changes among the Yangtze Platform, North China, Baltoscandia, Australia, and North America emerged due to alterations in the paleogeographic pattern. By comparing the sea-level curves in the Upper Yangtze Platform with the diversity curves of chitinozoans, acritarchs, and brachiopods, it became evident that environmental changes played a crucial role in the Great Ordovician Biodiversification Event (GOBE), especially during the Floian. The rising sea level and increased detrital materials fostered the development of diverse habitats, prompting organisms to adapt to varying environments. In general, rising sea levels favored increased brachiopod diversity, while falling sea levels favored enhanced planktonic diversity among chitinous and acritarch species. By shedding new light on the relationship between Ordovician sea-level changes and biodiversification in the Yangtze region, this study offers a fresh perspective on the subject from the microfacies analysis. [ABSTRACT FROM AUTHOR]

Mammals' aging is correlated with the accumulation of somatic heteroplasmic mitochondrial DNA (mtDNA) mutations. Whether and how aging accumulated mtDNA mutations modulate fertility remains unknown. Here, we analyzed oocyte quality of young (≤30 years old) and elder (≥38 years old) female patients and show the elder group had lower blastocyst formation rate and more mtDNA point mutations in oocytes. To test the causal role of mtDNA point mutations on infertility, we used polymerase gamma (POLG) mutator mice. We show that mtDNA mutation levels inversely correlate with fertility, interestingly mainly affecting not male but female fertility. mtDNA mutations decrease female mice's fertility by reducing ovarian primordial and mature follicles. Mechanistically, accumulation of mtDNA mutations decreases fertility by impairing oocyte's NADH/NAD+ redox state, which could be rescued by nicotinamide mononucleotide treatment. For the first time, we answer the fundamental question of the causal effect of age‐accumulated mtDNA mutations on fertility and its sex dependence, and show its distinct metabolic controlling mechanism. [ABSTRACT FROM AUTHOR]