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RISS 인기검색어
- 검색키워드
- 저자 : Yuhe Wu (검색결과 3 건)
- 무료
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Wu Huiyan,Guo Yuhe,Wang Juan,Zhang Junyan,Zhang Xiaojun,Tao Ailin 대한천식알레르기학회 2014 Allergy, Asthma & Immunology Research Vol.6 No.6
Purpose: At this time, there is uncertainty regarding whether allergen avoidance is the most appropriate strategy for managing or preventing allergies. The purpose of this study was to evaluate the effectiveness of allergen avoidance in the prevention of allergic symptoms in previously sensitized patients and newborns that have the potential to develop allergies. Methods: We performed online searches of articles published from January 1980 to December 2012 in PubMed and The Cochrane Central Register of Controlled Trials, and selected articles involving randomized controlled trials (RCTs) and allergen avoidance. The parameters used to determine allergenic potential in newborns included the risk ratio (RR) of eczema, asthma, rhinitis, wheeze, and cough. The methods employed to evaluate previously sensitized patients were the standardized mean difference (SMD) of forced expiratory volume in 1 second (FEV1) and peak expiratory flow rate (PEFR). Data quality was assessed using the Jadad scale. Results: A total of 14 RCTs were identified. Meta-analysis demonstrated that allergen avoidance for newborns did not reduce the subsequent incidence of allergic diseases (eczema, P=0.21; rhinitis, P=0.3; cough, P=0.1) but significantly reduced the incidence of asthma and wheezing in high-risk infants (asthma, P=0.03; wheeze, P=0.0004). However, previously sensitized patients who reduced their exposure to known allergens did not show improvement in their lung functions (FEV1, P=0.3; PEFR morning, P=0.53; PEFR evening, P= 0.2; PEFR, P=0.29). Conclusions: Allergen avoidance may not always be successful in preventing allergic symptoms. However, rigorous methodological studies are required to confirm this hypothesis.
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Facile Fabrication of Non-fluorinated Durable Superhydrophobic Cotton Fabric
Guolin Zheng,Yuhe Wu,Dan Zhang,Shuai Liu,Zhu Long,Rong Li 한국섬유공학회 2020 Fibers and polymers Vol.21 No.11
The superhydrophobic surface is easy to lose the superhydrophobicity in the practical applications, due to the factthat the micro- and nanoscale rough structure is easily damaged. Therefore, it is one of the challenges to endow solid surfacewith durable superhydrophobic property. In this work, the environment-friendly superhydrophobic cotton fabric was preparedby dip-coating methodology. Meanwhile, the cotton fabric was endowed with durable superhydrophobicity. Herein, theoctadecylamine was utilized to reduce the surface free energy of cotton fabric. However, octadecylamine was only adsorbedon the fabric surface. Therefore, the hydrophobic resin was employed to supply enough adhesion force. As a result, thelimitation that traditional methods frequently utilize additional nanoparticles to construct hierarchical rough surfaces wasbroken. The water contact angles of the coated cotton fabric at room temperature and 70 oC reached 154.4±0.6 o and120±1.1 o, respectively. Moreover, the coated cotton fabric still reserved superhydrophobic property after 30th cycle’sabrasion and exhibited excellent hydrophobicity after 500th cycle’s abrasion. In addition, the surface free energy of originalcotton fabric reduced by 54.7 % so that the coated cotton fabric had outstanding repellency to hydrochloric acid, sodiumhydroxide solution, coffee and sodium chloride solution, respectively.
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Study of Oleophobic Modification of Fiber Material Surface and Its Performance
Dan Zhang,Chanjuan Huang,Wei Luo,Yuhe Wu,Zhu Long 한국섬유공학회 2019 Fibers and polymers Vol.20 No.6
In recent years, remarkable development and progresses have been made on the study of oleophobic modificationof fibers. Modified oleophobic fibers have broad application prospects not only owing to their important uses in daily life, butalso their extraordinary use in the fields of defense science and technology, and medical health care. In this study, fluorinecontainingacrylate (FP) emulsion was synthesized via emulsion polymerization method using perfluorooctyl acrylate(PFOA) as the fluorine-containing monomer, and butyl acrylate (BA) and styrene (St) as the basic monomers. In addition,SiO2 hydrosol was also prepared by water-based sol-gel reaction using tetraethyl orthosilicate (TEOS) as the precursor. Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, particle size analysis,thermogravimetric analysis and contact angle measurement were used to characterize the structural morphology and thermalstability of the FP polymer. The as-obtained FP and SiO2/FP were coated on cotton fabrics by the impregnation-curingmethod, successfully affording the cotton fabrics with oleophobic property. The application performance of the fabrics beforeand after finishing were measured and analyzed, and the effect of rubbing and soap washing on the oleophobic property of thefabrics were investigated. Then property changes, such as the anti-ultraviolet property, whiteness, breathability, and breakingstrength, of the fabrics before and after finishing were investigated. The results showed that the FP finishing agent exhibitedexcellent thermal property and satisfied the basic requirements for the fabrics finishing agents. The oleophobic property ofthe fabrics after FP emulsion finishing achieved grade 5, with no wettability to n-dodecane. The oleophobic property of theSiO2/FP treated fabrics was better than those of the FP treated fabrics, indicating that the roughen treatment of cotton fabricssurfaces using silica sol first and then coating with FP improved the oleophobic property. The combined actions of the coarsesurface structure provided by SiO2 nanoparticles and the low surface energy of the fluorine-containing polymers afforded thecotton fabric surfaces with oleophobic property. The treated fabrics retained good oleophobic performance after multipletimes of water washing and rubbings, and the physical mechanical properties of the cotton fabrics did not change muchbefore and after finishing, and thus did not affect the clothing performance of the cotton fabrics.
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