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| 1 | Understanding primary and secondary sources of ambient oxygenated volatile organic compounds in Shenzhen utilizing photochemical age-based parameterization method显示文摘Oxygenated volatile organic compounds(OVOCs) are key intermediates in the atmospheric photooxidation process. To further study the primary and secondary sources of OVOCs,their ambient levels were monitored using a proton-transfer reaction mass spectrometer(PTR-MS) at an urban site in the Pearl River Delta of China. Continuous monitoring campaigns were conducted in the spring, summer, fall, and winter of 2016. Among the six types of OVOC species, the mean concentrations of methanol were the highest in each season(up to 13–20 ppbv), followed by those of acetone, acetaldehyde and acetic acid(approximately 2–4 ppbv), while those of formic acid and methyl ethyl ketone(MEK) were the lowest(approximately 1–2 ppbv). As observed from a diurnal variation chart, the OVOCs observed in Shenzhen may have been affected by numerous factors such as their primary and secondary sources and photochemical consumption. The photochemical age-based parameterization method was used to apportion the sources of ambient OVOCs. Methanol had significant anthropogenic primary sources but negligible anthropogenic secondary sources during all of the seasons. Acetone, MEK and acetic acid were mostly attributed to anthropogenic primary sources during each season with smaller contributions from anthropogenic secondary sources. Acetaldehyde had similar contributions from both anthropogenic secondary and anthropogenic primary sources throughout the year.Meanwhile, anthropogenic primary sources contributed the most to formic acid. | Bo Zhu Yu Han Chuan Wang Xiaofeng Huang Shiyong Xia Yingbo Niu Zixuan Yin Lingyan He | 2019 | Journal of Environmental Sciences2019,31,1: | 13 |
| 2 | Electronically coupled layered double hydroxide/MXene quantum dot metallic hybrids for high-performance flexible zinc–air batteries显示文摘Precise control of the local electronic structure and properties of electrocatalysts is important for enhancing the multifunctionality and durability of electrocatalysts and for correlating the structure/chemistry with the catalytic properties.Herein,we report electronically coupled metallic hybrids of NiFe layered double hydroxide nanosheet/Ti3C2 MXene quantum dots deposited on a nitrogen-doped graphene surface(LDH/MQD/NG)for high-performance flexible Zn-air batteries(ZABs).As verified from the Mott-Schottky and Nyquist plots,as well as spectroscopic,electrochemical,and computational analyses,the electronic and chemical coupling of LDH/MQD/NG modulates the local electronic and surface structure of the active LDH to provide metallic conductivity and abundant active sites,leading to significantly improved bifunctional activity and electrocatalytic kinetics.The rechargeable ZABs with LDH/MQD/NG hybrids are superior to the previous LDH-based ZABs,demonstrating a high power density(113.8 mW cm^(-2))and excellent cycle stability(150 h at 5 mA cm^(-2)).Moreover,the corresponding quasi solid-state ZABs are completely flexible and practical,affording a high power density of 57.6 mW cm^(-2)even in the bent state,and in real-life operation of tandem cells for powering various electronic devices. | Xiaotong Han Nannan Li Peixun Xiong Min Gyu Jung Yingbo Kang Qingyun Dou Qing Liu Jin Yong Lee Ho Seok Park | 2021 | InfoMat2021,3,10: | 4 |
| 3 | Ammonia-nitrogen and phosphates sorption from simulated reclaimed waters by modified clinoptilolite显示文摘 | Hanxin Huo Hai Lin Yingbo Dong Huang Cheng Han Wang Lixia Cao | 2012 | Journal of Hazardous Materials2012,,: | 1 |
| 4 | A two-stage probabilistic approach to manage personal worklist in work?flow management systems显示文摘 | HAN Rui LIU Yingbo WEN Lijie | 2009 | Lecture Notes in Computer Science2009,5870,: | 1 |
| 5 | Effects of ultraviolet irradiation on bacteria mutation and bioleaching of low-grade copper tailings显示文摘 | DONG Yingbo LIN Hai WANG Han | 2011 | Minerals Engineering2011,24,8: | 1 |
| 6 | Effects of ultraviolet irradiation on bacteria mutation and bioleaching of low-grade copper tailings显示文摘 | Yingbo Dong Hai Lin Han Wang Xiaolan Mo Kaibin Fu Hongwei Wen | 2011 | Minerals Engineering2011,,8: | 1 |
| 7 | Effects of ultraviolet irradiation on bacteria mutation and bioleaching of low-grade copper tailings显示文摘 | DONG Yingbo LIN Hai WANG Han | 2011 | Minerals Engineering2011,24,8: | 1 |
| 8 | Contributions of Zn(II)-binding to the structural stability of endostatin显示文摘 | Qing Han Yan Fu Hao Zhou Yingbo He Yongzhang Luo | 2007 | FEBS Letters2007,,: | 1 |
| 9 | Partial energies monotonicity and holomorphicity of Hermitian pluriharmonic maps显示文摘In this paper,we introduce the notion of Hermitian pluriharmonic maps from Hermitian manifold into K¨ahler manifold.Assuming the domain manifolds possess some special exhaustion functions and the vecotor field V=JMδJM satisfies some decay conditions,we use stress-energy tensors to establish some monotonicity formulas of partial energies of Hermitian pluriharmonic maps.These monotonicity inequalities enable us to derive some holomorphicity for these Hermitian pluriharmonic maps. | YANG GuiLin HAN YingBo DONG YuXin | 2013 | Science China Mathematics2013,56,5: | 1 |
| 10 | Monotonicity Formulas of E_F-Critical Maps with Potential显示文摘In this paper, we introduce the notion of EF-critical map with potential with respect to the functional EF,H(u). By using the stress-energy tensor, we obtain some monotonicity formulas and vanishing results for these maps under conditions on H. | Yingbo HAN | 2015 | Journal of Mathematical Research with Applications2015,35,6: | 0 |
| 11 | COMPLETE HYPERSURFACES WITH CONSTANT SCALAR CURVATURE IN A SPECIAL KIND OF LOCALLY SYMMETRIC MANIFOLD显示文摘In this paper, we investigate n-dimensional complete and orientable hypersufaces M n (n ≥ 3) with constant normalized scalar curvature in a locally symmetric manifold. Two rigidity theorems are obtained for these hypersurfaces. | Yingbo Han Shuxiang Feng | 2012 | Analysis in Theory and Applications2012,28,2: | 0 |
| 12 | Chemical constituents from aerial parts of Scoparia dulcis显示文摘Objective: To study the chemical constituents from the aerial parts of Scoparia dulcis.Methods: Various chromatographic techniques were used to separate the constituents and their structures were elucidated using spectroscopic methods and by comparing their data to those reported in the literatures. The α-glucosidase inhibitory activity assay was used to identify potential α-glucosidase inhibitors.Results: Nine compounds were isolated from the aerial parts of S. dulcis. Their structures were identified as Scoparic zolone(1),(2S)-2,7-dihydroxy-2H-1,4-benzoxazin-3(4H)-one(2),(2R)-7-hydroxy-2H-1,4-benzoxazin-3(4H)-one-2-O-β-D-glucopyranoside(3),(2R)-7-methoxy-2H-1,4-benzoxazin-3(4H)-one-2-O-β-D-glucopyranoside(4),(2S)-7-hydroxy-2H-1,4-benzoxazin-3(4H)-one-2-O-β-D-glucopyranoside(5),6-methoxy-benzoxazolin-2(3H)-one(6), 4-acetonyl-3,5-dimethoxy-p-quinol(7), zizyvoside I(8), and3,4-dihydroxy benzeneacetic acid(9). Compound 2 showed the potent α-glucosidase inhibitory activity with an IC50value of(132.8 ± 11.5) μmol/L, which is 28-fold higher than the positive control acarbose.Conclusion: Compound 1 is a new natural product. Compounds 2 and 9 have not been reported in Scoparia before. Compounds 3, 5, 7, 8 are isolated from Scrophulariaceae for the first time. | Yingbo Yang Zhuzhen Han Tong Tian Qi Liao Jiaran Geng Ying Xiao | 2023 | Chinese Herbal Medicines2023,15,1: | 0 |
| 13 | Analysis of High-Frequency Ultrasound in the differential Diagnosis of Lumps in Foot and Hand显示文摘Objective:To investigate the ultrasonogram characteristics of common lumps in hand and foot,pursuing for greater understanding of hand and foot lumps.Methods:65 cases of ultrasonographic characteristics of lumps in hand and foot were retrospectively analyzed,including the location,size,shape,boundary,internal echo and posterior echo,surrounding relationship and blood flow.Results:Among 65 cases,there were 26 cases of tendon sheath cyst,16 cases of tenosynovitis giant cell tumor,10 cases of hemangioma,4 cases of tendon sheath fibroma,3 cases of epidermoid cyst,2 cases of Schwannoma,2 cases of fibrolipoma,1 case of angiolipoma and 1 case of neurofibroma.The preoperative and postoperative pathological diagnoses of 45 cases,accounting for 69.23%,were consistent,3 cases(4.62%)were misdiagnosed,which included that 2 cases of tenosynovitis giant cell tumor were misdiagnosed as tendon sheath cyst,1 case of neurofibroma as epidermoid cyst,and the preoperative diagnosis of the rest 17 cases(26.15%)were indefinite.Conclusion:The high-frequency ultrasound can diagnose properties of lumps in foot and hand well,providing diagnosis basis for further treatment in clinic. | Huitong Yan Heying Li Jianmei Han Yingbo Tang | 2020 | Proceedings of Anticancer Research2020,4,4: | 0 |