Character of COVID-19 Prevention Information of CDC and its Impact on Online Engagement

This study investigated the character of COVID-19 prevention information of Centers for Disease Control and Prevention (CDC) Twitter account and its impact on online engagement based on Framing theory, Extended Parallel Process Model (EPPM), and Reactance theory. The current study analyzed the content of tweets from the CDC Twitter account quantitatively and qualitatively. A census of the tweets from CDC (N1=201) and comments on the sample of these tweets (N2=100) were collected and subsequently coded. Results showed that COVID-19 prevention information was more gain-framed appeals than loss-framed. The number of comments, retweets, and likes were found to be highly and positively related to each other. Messages of more efficacy elements, rather than messages originality, in the tweets led to more online engagement. However, even the efficacy elements of the tweets of CDC account instigated online engagement, almost half of the comments from these tweets showed reactance. The theoretical implications were discussed, as well as limitations and suggestions for future research

Unlocking high-performance organic cathodes: tailoring active group densities in covalent frameworks for aqueous zinc ion batteries

Aqueous zinc ion batteries (AZIBs) are a promising energy storage technology due to their cost-effectiveness and safety. Organic materials with sustainable and designable structures are of great interest as AZIBs cathodes. However, small molecules in organic cathode materials face dissolution problems and suboptimal cycle life, whereas large molecules suffer from a low theoretical capacity due to their inert carbon skeletons. Here, we designed two covalent organic framework (COF) materials (benzoquinoxaline benzoquinone-based COF (BB-COF) and triquinoxalinylene benzoquinone-based COF (TB-COF)) with the same structure and number of energy storage groups to investigate the correlation between the densities of active sites and electrochemical performance. We conclude that the electrochemical behavior of organic conjugate-based energy storage materials lacks a linear correlation with active site quantity. Adjusting active site densities is crucial for material advancement. BB-COF and TB-COF with dual active sites (C=O and C=N) exhibit distinct characteristics. TB-COF, which has dense active groups, shows a high initial capacity (222 mAh g−1). Conversely, BB-COF, which features a large conjugated ring diameter, presents superior rate performance and enduring cycle stability. It even maintains stable cycling for 2000 cycles at −40 ℃. In-situ electrochemical quartz crystal microbalance tests reveal the energy storage mechanism of BB-COF, in which H+ storage is followed by Zn2+ storage

Abscisic Acid May Play a Critical Role in the Moderating Effect of Epichloë Endophyte on Achnatherum inebrians under Drought Stress

Water scarcity is a major constraint that adversely affects plant development and growth. Abscisic acid (ABA) is a plant stress hormone that is rapidly synthesized and can induce stomatal closure to conserve water, thereby alleviating the drought stress of plants. The Epichloë endophyte enhances the drought tolerance of Achnatherum inebrians (drunken horse grass, DHG). To better understand how the Epichloë endophyte enhances drought tolerance, DHG plants without (EF) and with (EI), an Epichloë endophyte, were grown under 20% and 60% soil water conditions (SWC), and the leaves of the three treatments of EF and EI plants were sprayed with ABA solution (1 mg/L); fluridone (FLU), the ABA biosynthesis inhibitor solution (1 mg/L); and distilled water, respectively. Four-weeks later, the results indicated that the exogenous ABA application promoted plant growth, stomatal conductance, and photosynthetic rate, while the opposite effect occurred with plants sprayed with FLU. The differences between EI and EF plants in tiller number, height, chlorophyll content, stomata conductance, and photosynthetic rate were highest when sprayed with ABA. Thus, it is concluded that ABA might be involved in the moderating effect of Epichloë endophytes on DHG plants exposed to drought by maintaining growth and improving photosynthetic efficiency

Replantation of multiple fingertip amputations using super microsurgery: A case report and literature review

Background: The fingertip amputation is an amputation type of the finger beyond the proximal nail fold. There is no vein available for anastomoses on the dorsal side of the finger, and the palmar vein of the finger is small and tightly attached to the skin. Therefore, it is relatively difficult to implement surgical anastomoses, which poses challenges to the clinical treatment of fingertip amputations. Case report: A 29-year-old male was admitted to the hospital due to “the amputation of the fingertips of the right index, middle, and ring fingers caused by a heavy object compression 3 h ago”. The admission examination revealed that the right index, middle, and ring fingers were completely severed at the 1/2 plane of the nail bed, with irregular sections, severe contusion, and pollution. The X-ray examination showed comminuted fractures of the distal phalanges of the right index, middle, and ring fingers. Based on these findings, the patient was diagnosed with multiple severed fingertips of the right hand (Tamai Zone 1). The patient underwent debridement, vascular exploration, and replantation of the right index, middle, and ring fingertips under emergency general anesthesia. After surgery, anti-inflammatory, spasmolytic, and anticoagulant treatment and regular dressing changes were conducted. The patient did not receive a blood transfusion, and all three fingers survived. The appearance of these fingers was favorable 3 months after surgery, and the flexion and extension of these fingers were normal. Eventually, the patient achieved excellent Chen's hand function scores. Conclusions: To the best of our knowledge, this may be the first successful case regarding the replantation of three fingertips after amputations in Tamai Zone 1 with favorable outcomes. It can be maintained that super microsurgery can be used for the replantation of multiple fingertip amputations

Limb Salvage Using Lateral Circumflex Femoral Artery Graft for a Hand Vibration Syndrome

Summary:. A 50-year-old man was admitted to the hospital with a chief complaint of long-standing cold-induced numbness in the fingers for more than a year, accompanied by persistent hand pain and fingertip ulceration for 3 months. On physical examination, radial and ulnar artery pulsation was absent in both limbs, and pale skin color, low skin temperature, and limited finger range of motion were noted. Gangrene was detected in the fingertips of the left index and middle fingers, and the right middle and ring fingers. The patient was diagnosed with bilateral arterial occlusion and vibration white finger. Upon admission, the patient underwent an intervention surgery on the right side. Subsequently, transplantation of the descending branches of the left and right lateral femoral circumflex arteries was performed to restore blood flow in the bilateral radial arteries. Additionally, debridement was conducted without shortening after the surgical procedure, the patient received anticoagulation, anti-inflammatory, and symptomatic treatment. The bilateral finger skin temperature increased by 3 °C postoperatively, and the accompanying pain and numbness were alleviated. The wound healed 1 month after surgery, and no recurrence of pain or ulcer was reported during the 1-year follow-up period. Eventually, his hand function recovered, without any impact on the vascular donor site

Household dampness-related exposures in relation to childhood asthma and rhinitis in China : A multicentre observational study

During 2010-2012, we conducted an observational study on household environment and health outcomes among 40,010 preschool children from seven cities of China. Here we examined associations of six dampness-related indicators (visible mold spots, visible damp stains, damp clothing and/or bedding, water damage, condensation on windowpane, moldy odor) in the current residence and three dampness-related indicators (visible mold spots, condensation on windowpane, moldy odor) in the early residence with childhood asthma and rhinitis. In the multi-level logistic regression analyses, visible mold spots and visible damp stains in the current residence were significantly associated with the increased odds of doctor-diagnosed asthma and allergic rhinitis during lifetime-ever (adjusted odd ratios (AORs) range: 1.18-1.35). All dampness-related indicators were significantly associated with increased odds of wheeze and rhinitis during lifetime-ever and in the past 12 months (AORs range: 1.16-2.64). The cumulative numbers of damp indicators had positively dose-response relationships with the increased odds of the studied diseases. These associations for wheeze and rhinitis were similar between northern children and southern children. Similar results were found in the sensitive analyses among children without a family history of allergies and among children without asthma and allergic rhinitis. For 3-6 years-old children in mainland of China in 2011, we speculated that about 90,000 (2.02%) children with asthma and about 59,000 (1.09%) children with allergic rhinitis could be attributable to exposing to visible mold spots in the current residence. Our results suggested that early and lifetime exposures to household dampness indicators are risk factors for childhood asthma and rhinitis