Les résidents enseignent : capsules d’enseignement médical multidisciplinaire sur Instagram

Implication Statement Instagram is an easy-to-use smartphone-based program and an increasingly popular platform for medical education. A total of 17 weekly structured resident-led education sessions that cover 15 different medical specialities were hosted on an Instagram account (@medskldotcom) to publish clinical “pearls” – short pieces of free standing, evidence-based, clinically relevant information designed specifically for medical students. With the cancellations of out-of-province clerkship electives during COVID-19 pandemic, the number of resident-led Instagram accounts to promote residency programs have increased. Our initiative can be easily adapted by residents or even clinicians to provide medical education to medical students, showcase residents, and attract followers on Instagram.Énoncé des implications de la recherche Instagram, application facile à utiliser sur téléphone intelligent, est une plateforme de plus en plus populaire pour l’enseignement médical. Au total, 17 séances d’enseignement structurées couvrant 15 spécialités médicales différentes et animées par des résidents ont été publiées à raison d’une par semaine sur un compte Instagram (@medskldotcom). Ces « perles » cliniques sont de courtes capsules d’information autonomes, fondées sur des données probantes et pertinentes sur le plan clinique, conçues spécialement pour les étudiants en médecine. En raison des annulations des stages hors province pendant la pandémie de la COVID-19, le nombre de comptes Instagram lancés par des résidents pour promouvoir les programmes de résidence a augmenté. Notre initiative peut être facilement adaptée par les résidents ou même les cliniciens pour offrir un enseignement médical aux étudiants en médecine, pour mettre en valeur le travail des résidents et pour attirer des adeptes sur Instagram

Commentary and Opinions: The Utilization of Social Media by Medical Residency Programs During COVID-19 Pandemic and Beyond

As a result of COVID-19 pandemic, medical training has been greatly impacted globally. In Canada, out-of-province visiting clinical electives were cancelled. In addition, the Canadian Resident Matching Service (CaRMS) interviews were transitioned to being virtual since 2020. As residency programs are exploring new ways to overcome the challenges of elective cancellation, there has been a surge of residency program social media accounts on Instagram, Twitter, and Facebook. Social media serves as a platform for residency programs to promote themselves in addition to posting interactive educational materials. Moreover, social media residency accounts provide a platform for medical students to learn about the programs and network virtually with fellow applicants, residents, program directors, and faculty members. Overall, social media is becoming a popular and valuable tool for residency programs to connect with the applicants during COVID-19 pandemic and beyond. Among the different social media platforms, Instagram seems to be more appealing to both residency programs and the graduating medical students. We report our observations regarding selected Canadian residency program Instagram accounts. To maximize the success of using social media, it is important for the residency programs to consider the attitudes of applicants towards the residency social media accounts. Future studies are needed to assess the effectiveness of the Canadian residency program social media accounts for the final year students applying for these programs

Distinct quasiparticle interference patterns for surface impurity scattering on various Weyl semimetals

We examine the response of the Fermi arc in the context of quasi-particle interference (QPI) with regard to a localized surface impurity on various three-dimensional Weyl semimetals (WSMs). Our study also reveals the variation of the local density of states (LDOS), obtained by Fourier transforming the QPI profile, on the two-dimensional surface. We use the $T$-matrix formalism to numerically (analytically and numerically) capture the details of the momentum space scattering in QPI (real space decay in LDOS), considering relevant tight-binding lattice and/or low-energy continuum models modeling a range of different WSMs. In particular, we consider multi-WSM (mWSM), hosting multiple Fermi arcs between two opposite chirality Weyl nodes (WNs), where we find a universal $1/r$-decay ($r$ measuring the radial distance from the impurity core) of the impurity-induced LDOS, irrespective of the topological charge. Interestingly, the inter-Fermi arc scattering is only present for triple WSMs, where we find an additional $1/r^3$-decay as compared to double and single WSMs. The untilted single (double) [triple] WSM shows a straight-line (leaf-like) [oval-shaped] QPI profile. The above QPI profiles are canted for hybrid WSMs where type-I and type-II Weyl nodes coexist, however, hybrid single WSM demonstrates strong non-uniformity, unlike the hybrid double and triple WSMs. We also show that the chirality and the positions of the Weyl nodes imprint marked signatures in the QPI profile. This allows us to distinguish between different WSMs, including the time-reversal-broken WSMs from the time-reversal-invariant WSM, even though both of the WSMs can host two pairs of Weyl nodes. Our study can thus shed light on experimentally obtainable complex QPI profiles and help differentiate different WSMs and their surface band structures.Comment: 18 pages, 6 figure

The Technology of Mould Steel for Online Pre-hardening

AbstractThis article describes a production method of mould steel pre-hardening, and focus on the advantage of this method, The technical core of method is the variable frequency and variable amplitude pulse uniform high-precision temperature control, which achieved by using strong-medium-weak water cooling, gas-water cooling and gas mist cooling composite cooling control technology. Optimizing the cooling rate path is a good method of optimizing quenched organization and structure

Genetic Properties of a Nested Association Mapping Population Constructed With Semi-Winter and Spring Oilseed Rapes

Nested association mapping (NAM) populations have been widely applied to dissect the genetic basis of complex quantitative traits in a variety of crops. In this study, we developed a Brassica napus NAM (BN-NAM) population consisting of 15 recombination inbred line (RIL) families with 2,425 immortal genotypes. Fifteen high-density genetic linkage maps were constructed by genotyping by sequencing (GBS) based on all RIL families, with further integration into a joint linkage map (JLM) having 30,209 unique markers in common with multiple linkage maps. Furthermore, an ultra-density whole-genome variation map was constructed by projecting 4,444,309 high-quality variants onto the JLM. The NAM population captured a total of 88,542 recombination events (REs). The uneven distribution of recombination rate along chromosomes is positively correlated with the densities of genes and markers, but negatively correlated with the density of transposable elements and linkage disequilibrium (LD). Analyses of population structure and principal components revealed that the BN-NAM population could be divided into three groups with weak stratification. The LD decay distance across genome varied between 170 and 2,400 Kb, with LD decay more rapid in the A than in the C sub-genome. The pericentromeric regions contained large LD blocks, especially in the C sub-genome. This NAM population provides a valuable resource for dissecting the genetic basis of important traits in rapeseed, especially in semi-winter oilseed rape