Understanding the Role of Streamer Emotion in E-Commerce Livestreaming

The combination of e-commerce and livestreaming video (e-commerce livestreaming) offers an unprecedented opportunity for streamers (salespeople) to show their emotional displays to viewers (consumers) in real-time. However, it remains unclear how and to what extent streamer emotion influences purchase intentions, especially in the context of different product types where consumers have different decision-making considerations. Based on the stereotype content model, which considers two basic dimensions of social judgments (i.e., warmth and competence), this study intends to explore the impact of the interaction effect of streamer emotion (happiness vs. neutrality) and product type (utilitarian vs. hedonic product) on consumers’ purchase intentions and behaviors. Both laboratory experiment and secondary data analysis will be conducted to test our hypotheses. We hope this study can not only extend the livestreaming and emotion-related literature but also provide suggestions on emotional expressions for streamers in their marketing campaigns

Safety and efficacy of hydroxychloroquine as prophylactic against COVID-19 in healthcare workers: a meta-analysis of randomised clinical trials

OBJECTIVE: We studied the safety and efficacy of hydroxychloroquine (HCQ) as pre-exposure prophylaxis for COVID-19 in healthcare workers (HCWs), using a meta-analysis of randomised controlled trials (RCTs). DATA SOURCES: PubMed and EMBASE databases were searched to identify randomised trials studying HCQ. STUDY SELECTION: Ten RCTs were identified (n=5079 participants). DATA EXTRACTION AND SYNTHESIS: The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines were used in this systematic review and meta-analysis between HCQ and placebo using a Bayesian random-effects model. A pre-hoc statistical analysis plan was written. MAIN OUTCOMES: The primary efficacy outcome was PCR-confirmed SARS-CoV-2 infection and the primary safety outcome was incidence of adverse events. The secondary outcome included clinically suspected SARS-CoV-2 infection. RESULTS: Compared with placebo, HCWs randomised to HCQ had no significant difference in PCR-confirmed SARS-CoV-2 infection (OR 0.92, 95% credible interval (CI): 0.58, 1.37) or clinically suspected SARS-CoV-2 infection (OR 0.78, 95% CI: 0.57, 1.10), but significant difference in adverse events (OR 1.35, 95% CI: 1.03, 1.73). CONCLUSIONS AND RELEVANCE: Our meta-analysis of 10 RCTs investigating the safety and efficacy of HCQ as pre-exposure prophylaxis in HCWs found that compared with placebo, HCQ does not significantly reduce the risk of confirmed or clinically suspected SARS-CoV-2 infection, while HCQ significantly increases adverse events. PROSPERO REGISTRATION NUMBER: CRD42021285093

Associations of HLA-DP Variants with Hepatitis B Virus Infection in Southern and Northern Han Chinese Populations: A Multicenter Case-Control Study

) locus has been reported to be associated with hepatitis B virus (HBV) infection in populations of Japan and Thailand. We aimed to examine whether the association can be replicated in Han Chinese populations. = 0.097∼0.697 and 0.198∼0.615 in northern Chinese population, respectively). loci were strongly associated with HBV infection in southern and northern Han Chinese populations, but not with HBV progression

La vivienda como reflejo de la evolución de China en el siglo XX

China ha experimentado uno de los mayores progresos económicos y sociales de la historia de la humanidad, un período de transformación que comenzó desde que la última dinastía imperial cayó a principios de 1912. Desde entonces, China ha vivido períodos de guerra civil, inestabilidad, invasiones extranjeras, hambruna y profundos cambios sociales y culturales. Las viviendas son un claro reflejo de este proceso de metamorfosis del gigante asiático que sin embargo conserva la esencia de una civilización con miles de años de historia, donde la tradición y la influencia filosófica de pensadores del pasado, como Confucio, siguen influyendo a la hora de analizar cómo han sido tres de los tipos de vivienda más presentes en el país. Desde las casas patio tradicionales de los Han del norte de China, pasando por las fábricas reacondicionadas en “casas tubo” de la época maoísta, hasta llegar al surgimiento de los microdistritos residenciales que pueblan las grandes urbes de la China moderna hoy en día. Este trabajo pretende comparar los tres modelos de vivienda con el fin de utilizarlos como reflejo de la evolución del país y para arrojar más luz sobre los profundos procesos de cambio estructural que la sociedad China ha experimentado, sin dejar de tener en cuenta el legado del pensamiento tradicional de una de las civilizaciones más antiguas del mundo

Understanding Live Streaming Shopping Intentions: A Vicarious Learning Perspective

Live streaming shopping, as an emerging form of social commerce, is becoming increasingly popular. The distinguishing affordances of live streaming shopping enable two types of vicarious learning namely coactive vicarious learning and independent vicarious learning for consumers. These learning processes will affect consumers’ live streaming shopping intentions. Based on means-end chain framework and vicarious learning theory, this study proposes a model in which five affordances of live streaming shopping affect consumers’ perceived value, and in turn affect their live streaming shopping intentions. Specifically, we posit that vicarious learning-related affordances (narration, comparison, encouragement, WOM referrals and observational learning) are instrumental to achieve the desired values (product knowledge, affective commitment and group identification), and these values are the final goals that trigger live streaming shopping intentions. The model will be validated by empirical data collected from major live streaming platforms in China

Surfactant-Free Synthesis of Single Crystalline SnS 2

Sheetlike tin disulfide (SnS2) single crystal exposed with well-defined {001} facets and flowerlike SnS2 mainly exposed with {010} facets were prepared through a surfactant-free solvothermal process. Photocatalytic degradation of methyl orange (MO) under visible light irradiation indicated that the sheetlike SnS2 showed a much higher activity than flowerlike SnS2. Theoretical and experimental results revealed that the band structure derived from the surface atomic structure played a more important role than the surface energy in the photocatalytic property. The present work has provided a deep insight into the important role of the surface energy and band structure, both of which are derived from the surface atomic structure, in the photocatalytic activity

Fibrinogen levels are associated with bleeding in patients with primary immune thrombocytopenia

Bleeding is the most common clinical symptom and the leading cause of death in patients with primary immune thrombocytopenia (ITP). Our research intends to verify the role of fibrinogen levels as independent determinants of bleeding. We retrospectively analyzed the relationship between fibrinogen levels and bleeding events in 463 patients. Additionally, we confirmed the impact of fibrinogen level on clot firmness in 25 patients via thrombelastography (TEG). Fibrinogen levels (median and inter-quartile range, IQR) were significantly different (p < .001) between bleeding and non-bleeding patients [258(207–314) mg/dL vs. 315(262–407) mg/dL, respectively]. Further analyzes in three subgroups based on platelet (PLT) count showed that non-bleeding patients still had higher fibrinogen levels than bleeding patients. The optimal discriminant threshold of fibrinogen in bleeding was 288.5 mg/dL according to receiver operating characteristic (ROC) curves. Patients were divided into low (LF, 230[193–258] mg/dL) and high (HF, 349[313–424] mg/dL) fibrinogen groups based on this threshold. Bleeding event rates were significantly different (LF: 84.6% vs. HF: 60.4%, P < .001) between the two groups. Multivariable analyses further confirmed these differences. Moreover, TEG parameters showed elevated clot firmness in the HF group. Our data suggest that high fibrinogen levels are associated with reduced bleeding events

Micro/Nanorobot: A Promising Targeted Drug Delivery System

Micro/nanorobot, as a research field, has attracted interest in recent years. It has great potential in medical treatment, as it can be applied in targeted drug delivery, surgical operation, disease diagnosis, etc. Differently from traditional drug delivery, which relies on blood circulation to reach the target, the designed micro/nanorobots can move autonomously, which makes it possible to deliver drugs to the hard-to-reach areas. Micro/nanorobots were driven by exogenous power (magnetic fields, light energy, acoustic fields, electric fields, etc.) or endogenous power (chemical reaction energy). Cell-based micro/nanorobots and DNA origami without autonomous movement ability were also introduced in this article. Although micro/nanorobots have excellent prospects, the current research is mainly based on in vitro experiments; in vivo research is still in its infancy. Further biological experiments are required to verify in vivo drug delivery effects of micro/nanorobots. This paper mainly discusses the research status, challenges, and future development of micro/nanorobots

Advanced Coatings with Antioxidant and Antibacterial Activity for Kumquat Preservation

An active coating is one of the best ways to maintain the good quality and sensory properties of fruits. A new active coating was prepared by incorporating curcumin and phloretin into the konjac glucomannan matrix (KGM-Cur-Phl). The fourier infrared spectroscopy, rheology and differential scanning calorimetry confirmed the successful fabrication of this coating. This coating showed excellent antioxidant activity revealed by the 95.03% of ABTS radicals scavenging ratio and 99.67% of DPPH radicals scavenging ratio. The result of bacteria growth curves showed that it could effectively inhibit the growth of Staphylococcus aureus, Escherichia coli, Listeria monocytogenes and Salmonella typhimurium. The results of firmness, titratable acid and pH showed that it effectively prolonged the shelf life of kumquat. A novel konjac glucomannan-based active coating was provided

XCMAX4: A Robust X Chromosomal Genetic Association Test Accounting for Covariates

Although the X chromosome accounts for about 5% of the human genes, it is routinely excluded from genome-wide association studies probably due to its unique structure and complex biological patterns. While some statistical methods have been proposed for testing the association between X chromosomal markers and diseases, very a few of them can adjust for covariates. Unfortunately, those methods that can incorporate covariates either need to specify an X chromosome inactivation model or require the permutation procedure to compute the p value. In this article, we proposed a novel analytic approach based on logistic regression that allows for covariates and does not need to specify the underlying X chromosome inactivation pattern. Simulation studies showed that our proposed method controls the size well and has robust performance in power across various practical scenarios. We applied the proposed method to analyze Graves&rsquo; disease data to show its usefulness in practice