http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Zhang, Xin,Li, Haimiao,Mu, Huifang,Liu, Yifan,Guan, Yanan,Yoon, Juyoung,Yu, Haitao Elsevier 2017 Dyes and pigments Vol.147 No.-
<P><B>Abstract</B></P> <P>Several cholesteryl naphthalimide-derived compounds have been sythesized and developed as CO<SUB>2</SUB> sensors. The derivatives, incorporating ether chains, were found to be capable of gelating various organic solvents, due to the modulation of the hydrophilicity/hydrophobility properties of them. The resulting organogels were well characterized by field emission scanning electron microscopy (FE-SEM), FT-IR spectroscopy, concentration- and temperature-dependent <SUP>1</SUP>H NMR spectra, and powder X-ray diffraction (PXRD). These gelators can be applied as fluorescent sensors for CO<SUB>2</SUB> in DMSO solutions via the anion-triggered strategy. Furthermore, the resulting organogelation systems in DMSO could also provide visual sensing means for CO<SUB>2</SUB> via the reversible solution-to-gel transition. Particularly, the re-gelation of DMSO induced by CO<SUB>2</SUB> bubbling could be directly observed without the aid of the heating-and-cooling operation. And the reversible sensing process could be repeated several times with the excellent chemical stability of the gelation system after the repeated stimuli of fluoride anion, CO<SUB>2</SUB> and N<SUB>2</SUB> with heating. These investigations indicate the developed organogelators own the applicable potential in the CO<SUB>2</SUB> detection.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Two new cholesteryl naphthalimide-based organogelators are developed for CO<SUB>2</SUB> sensing based on an anion-induced strategy. </LI> <LI> Sensors <B>1b</B> and <B>1c</B> exhibited optically ratiometric detection effects for CO<SUB>2</SUB> in solution with relatively low detection limits. </LI> <LI> Gelator <B>1c</B> can provide a visual sensing means for CO<SUB>2</SUB> directly via solution-gel transition. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
An Algorithm and Implementation for Image Segmentation
Li Haitao,Li Shengpu 보안공학연구지원센터 2016 International Journal of Signal Processing, Image Vol.9 No.3
In this paper we present an image segmentation algorithm based on the gradient histogram threshold image improvement. And the MATLAB simulation result shows that: each kind of image segmentation algorithm has its own advantages, disadvantages and scope. Therefore, it is necessary to judge and analysis the image first before we do image segmentation, then we can choose an appropriate segmentation algorithm and it makes the result of the image segmentation satisfactory.
Haitao Guo,Zhenyu Wang,Han Pan,Xin Li,Li Chen,Weili Rao,Yuan Gao,Dequan Zhang 한국식품과학회 2014 Food Science and Biotechnology Vol.23 No.3
Different amounts of the potent mutagenic and/or carcinogenic heterocyclic aromatic amines (HAAs) areformed in muscle-based foods under different cookingmethods. HAAs (9 varieties) in lamb patties cooked usingtraditional Chinese cooking methods (roasting, frying, panfrying,and stewing in seasonings) were investigated. Thetotal HAAs contents in roasted, fried, pan-fried, and stewedpatties were 4.39-123.15 ng/g, 3.59-43.24 ng/g, 0.71-10.05ng/g, and 51.07-120.32 ng/g, respectively. Amounts of HAAsincreased as cooking time increased. 2-amino-1-methyl-6-phenylimidazo [4,5-b] pyridine (PhIP) was the dominantHAAs in deep roasted and fried samples, while 1-methyl-9H-pyrido [3,4-b] indole (Harman) and 9H-pyrido [3,4-b]indole (Norharman) were the main HAAs in pan-fried andstewed samples. Types and contents of HAAs formed atdifferent cooking times using different methods are unique. Stewing in seasoning generated a higher HAAs contentthan the high-temperature cooking methods roasting,frying, and pan-frying.
Li, Haitao,Xie, Bo,Hui, Mizhou Techno-Press 2013 Advances in environmental research Vol.2 No.1
There is a significant demand to make various dissolved gases in water. However, the conventional aeration method shows low gas mass transfer rate and gas utilization efficiency. In this study, a novel rotating wheel entraining gas method was developed for making high dissolved $O_2$ and $O_3$ in water. It produced higher concentration and higher transfer rate of dissolved $O_2$ and $O_3$ than conventional bubble aeration method, especially almost 100% of gas transfer efficiency was achieved for $O_3$ in enclosed reactor. For application of rotating wheel entraining gas method, aerobic bio-reactor and membrane bio-reactor (MBR) were successfully used for treatment of domestic and pharmaceutical wastewater, respectively; and vacuum ultraviolet $(VUV)/UV+O_3/O_2$ reactors were well used for sterilization in air/water, removal of dust particles and toxic gases in air, and degradation of pesticide residue and sterilization on fruits and vegetables.
Haitao Li,Yang Sun,최형진,Siqin Zhao 한국고분자학회 2018 Macromolecular Research Vol.26 No.9
Hierarchical architectures of poly(methyl methacrylate) (PMMA)/aminofunctionalized multi-walled carbon nanotube (MWNT-NH2) particles were prepared, in which the electrical conductive network was constructed on the surface of PMMA microspheres. The morphology, composition, and electrical conductivity of the particles were characterized by transmission electron microscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, thermogravimetric analysis, and four-probe electrical conductivity measurement. The PMMA/MWNT-NH2 transducers were exposed to each ethanol, water, toluene, and chloroform for volatile organic compounds (VOCs) sensing detection. The particles showed excellent sensitivity, good reversibility, and a strong response compared to the raw MWNTs and MWNT-NH2. This was attributed not only to the formation of a charge transmission path on the particle surface, but also to the interaction between the vapor molecules and functionalized MWNTs. The enhanced sensing performance of the PMMA/MWNT-NH2 particles suggests that it is a good candidate for the preparation of electronic noses for disease diagnostics and VOCs detection.
Li, Jinjie,Pandeya, Devendra,Nath, Krishna,Zulfugarov, Ismayil S.,Yoo, Soo-Cheul,Zhang, Haitao,Yoo, Jeong-Hoon,Cho, Sung-Hwan,Koh, Hee-Jong,Kim, Do-Soon,Seo, Hak Soo,Kang, Byoung-Cheorl,Lee, Choon-Hwa Blackwell Publishing Ltd 2010 The Plant journal Vol.62 No.4
<P>Summary</P><P>The <I>zebra-necrosis</I> (<I>zn</I>) mutant of rice (<I>Oryza sativa</I>) produces transversely green/yellow-striped leaves. The mutant phenotype is formed by unequal impairment of chloroplast biogenesis before emergence from the leaf sheath under alternate light/dark or high/low temperatures (restrictive), but not under constant light and temperature (permissive) conditions. Map-based cloning revealed that <I>ZN</I> encodes a thylakoid-bound protein of unknown function. Virus-induced gene silencing of a <I>ZN</I> homolog in <I>Nicotiana benthamiana</I> causes leaf variegation with sporadic green/yellow sectors, indicating that ZN is essential for chloroplast biogenesis during early leaf development. Necrotic lesions often occur in the yellow sectors as a result of an excessive accumulation of reactive oxygen species (ROS). The phenotypic severity (leaf variegation and necrosis) and ROS levels are positively correlated with an increase in light intensity under restrictive conditions. In the mutant leaves, chlorophyll (Chl) metabolism, ROS scavenging activities, maximum quantum yield of photosystem II (PSII), and structures and functions of the photosynthetic complexes are normal in the Chl-containing cells, suggesting that ROS are mainly generated from the defective plastids of the Chl-free cells. The PSII activity of normal chloroplasts is hypersensitive to photoinhibition because the recovery rates of PSII are much slower. In the PSII repair, the degradation of damaged D1 is not impaired, suggesting a reduced activity of new D1 synthesis, possibly because of higher levels of ROS generated from the Chl-free cells by excess light. Together, we propose that ZN is required for protecting developing chloroplasts, especially during the assembly of thylakoid protein complexes, from incidental light after darkness.</P>
Haitao Yu,Pengcheng Xu,Xiaoyuan Xia,Dong-Weon Lee,Xinxin Li IEEE 2012 IEEE transactions on industrial electronics Vol.59 No.12
<P>This paper reports a novel top-down/bottom-up combined resonant microcantilever chemical sensor, where the nanosensing material of a functionalized mesoporous thin film (MTF) is directly self-assembled on the sensing region of the integrated microcantilever. By using the batch-producible nano-on-micro construction technique, a large number of such sensors can be batch fabricated with uniform performance and low cost. More importantly, the sensing molecule terminals can be simultaneously constructed at the pore inner surface when the MTF is directly grown on the cantilever. With -NH<SUB>2</SUB>-group-functionalized MTF directly grown onto the surface of the cantilever free end, the micro-/nanocombined gravimetric sensor has experimentally exhibited quick response and highly sensitive detection of CO<SUB>2</SUB> gas.</P>
Li Yao,Xie Wang,Haitao Liu,Chaowen Lin,Liangyu Pang,Junwei Yang,Qingbin Zeng 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.56 No.-
A simple and efficient method for the determination of Cd and Pb in water samples was developed byultrasound-assisted magnetic retrieval-linked ionic liquid dispersive liquid–liquid microextraction (UA-MR-IL-DLLME) preconcentration and graphite furnace atomic absorption spectrometry (GFAAS)detection. Ionic liquid (IL) [Hmim] [PF6] was used as the extractant, ammonium pyrrolidinedithiocarbamate (APDC) as the complexing agent and Fe3O4 nanoparticles as the sorbent, whileultrasound was applied to assist the dispersion of the extractant and accelerate the mass transfer process. The effect of different factors on the extraction efficiency including pH, IL volume, APDC amount,ultrasound extraction time, ultrasound desorption time and Fe3O4 amount was studied by a fractionalfactorial design to screen for the most important factors. Then a central composite design was used tooptimize the significant factors. Under the optimal conditions, the method has linear calibration curvesover the range of 0.3–20 ng/mL for Cd and 0.5–40 ng/mL for Pb, with correlation coefficients (R) of0.9990 and 0.9986 for Cd and Pb, respectively. The limits of detection were 0.1 ng/mL and 0.15 ng/mL withrelative standard deviations of 3.4% and 2.8% for Cd and Pb, respectively. Finally, the method wassuccessfully applied for the determination of Cd and Pb in the real water samples and satisfactoryrecoveries were achieved.