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您的检索式：作者名="Martin Steinhart"
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| 1 | Impact of COVID-19 lockdown on hospital admissions for epistaxis in Germany显示文摘BACKGROUND Reports of a decrease in hospital admissions during the coronavirus disease 2019(COVID-19)lockdown period have raised concerns about delayed or missed diagnoses and treatments for non-COVID-19-related illnesses.AIM To investigate the impact of the COVID-19 pandemic-induced lockdown and its end on hospital admissions of patients with epistaxis in Germany.METHODS A retrospective analysis based on the national database of the Hospital Remuneration System was used to compare hospital admissions during defined time periods between 2019 and 2022 with the lockdown period as the reference period.This was done on a weekly basis before,during,and after the lockdown.An Interrupted Time Series was used as the analysis method.RESULTS In our analysis,we included 26183 patients.The implementation of the lockdown led to a substantial reduction in the overall occurrence of epistaxis among patients(P<0.05).This effect was most pronounced in the age group of 0-39 years,where the decrease was highly significant(P<0.001).However,there was no change observed in patients aged 80 years and older(not significant).With the end of the lockdown period,the overall number of patients,especially in the youngest age group,increased abruptly and significantly(P<0.01).CONCLUSION During the lockdown period,there was a decrease in hospital admissions for younger patients with epistaxis,possibly due to the fear of COVID-19 exposure.We also conclude that the severity of epistaxis was not underestimated in the elderly during the pandemic. | Adrian Hoenle Martin Wagner Stephan Lorenz Helmut Steinhart | 2023 | World Journal of Methodology2023，13，5： | 0 |
| 2 | Fast Evaporation Enabled Ultrathin Polymer Coatings on Nanoporous Substrates for Highly Permeable Membranes显示文摘Thin polymer coatings covering on porous substrates are a common composite structure required in numerous applications,including membrane separation,and there is a strong need to push the coating thicknesses down to the nanometer scale to maximize the performances.However,producing such ultrathin polymer coatings in a facile and efficient way remains a big challenge.Here,uniform ultrathin polymer covering films(UPCFs)are realized by a facile and general approach based on rapid solvent evaporation.By fast evaporating dilute polymer solutions spread on the surface of porous substrates,we obtain ultrathin coatings(down to30 nm)exclusively on the top surface of porous substrates,forming UPCFs with a block copolymer of polystyrene-blockpoly(2-vinyl pyridine)at room temperature or a homopolymer of poly(vinyl alcohol)(PVA)at elevated temperatures.Upon selective swelling of the block copolymer and crosslinking of PVA,we obtain highly permeable membranes delivering2–10 times higher permeance in ultrafiltration and pervaporation than state-of-the-art membranes with comparable selectivities.We have invented a very convenient but highly efficient process for the direct preparation of defective-free ultrathin coatings on porous substrates,which is extremely desired in different fields in addition to membrane separation. | Xiansong Shi Lei Wang Nina Yan Zhaogen Wang Leiming Guo Martin Steinhart Yong Wang | 2021 | The Innovation2021，2，1： | 0 |
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