BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
·
2022
·Vol. 76
·期 12
·1-10
·
IF 2.944
Li Chengzhe,Wang Hua,Chen Xiaoming,Yao Jun,Deng Jianyu
Abstract Butterflies use visual and olfactory cues to identify conspecifics during courtship. Tirumala limniace , Idea leuconoe , and Danaus chrysippus are three species of butterflies with a sympatric distribution, and T. limniace butterflies are rarely seen to chase I. leuconoe or D. chrysippus during courtship in artificial cultivation gardens, indicating that they have a mechanism for recognizing conspecifics; however, there are no reports on what kind of signals they use to recognize conspecifics. In this study, we investigated the cues used by T. limniace to identify conspecifics and the relative roles of visual and olfactory cues. We found that in the absence of olfactory cues (visual cues only), male and female butterflies were able to identify the same species based on wing color and pattern. By collecting and identifying body volatiles emitted from T. limniace males and females, we found that the highest amounts were β -ocimene and β -pinene, which were sourced from the insects’ bodies (as opposed to sex pheromones). Furthermore, electroantennogram binding behavioral experiments showed that β -ocimene was involved in the process of species recognition and that the relative roles of olfactory cues were greater than those of visual cues at close range. Therefore, T. limniace males and females could utilize both visual and olfactory cues to identify conspecifics during courtship but preferred olfactory cues. The present study highlighted the important role of adult body odor rather than sex pheromones in butterfly species recognition. Significance statement Butterflies use visual (wing color and pattern) and olfactory (sex pheromones) cues to identify conspecifics during courtship. Butterflies also release volatiles emitted from their bodies during courtship. However, there is no clear evidence that body volatiles (as opposed to sex pheromones) emitted from butterflies are involved in species recognition. We studied the functions of body volatiles emitted from Tirumala limniace adults and the relative roles of visual and olfactory cues in species recognition during courtship. We found that male and female adults could identify conspecifics using only visual cues. Meanwhile, we also found that the highest amounts of β -ocimene, which came from the bodies of T. limniace males and females, were also involved in the process of species recognition. The olfactory cues that butterflies use to identify conspecifics are usually sex pheromones, while the present study highlighted the important role of adult body odor rather than sex pheromones in butterfly species recognition.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2021
·Vol. 39
·期 12
·1538-1549
·
IF 3.603
Lin Sha,Sun Hui,Cornel Erik Jan,Jiang Jin-Hui,Zhu Yun-Qing,Fan Zhen,Du Jian-Zhong
Dented nanospheres show promising potential in drug delivery, nanomotors, etc . However, it is still challenging to prepare them by homopolymer self-assembly because of the strict structural requirements of the homopolymer. Herein, we propose a strategy for preparing dented nanospheres from homopolymers by co-assembly with a short peptide. They were co-assembled from poly(2-hydroxy-3-((4-(ethoxycarbonyl)phenyl)amino)propyl methacrylate) (PHBzoMA 59 ) and ( S )-2-(( S )-2-((((9 H -fluoren-9-yl)methoxy)carbonyl)amino)-3-phenylpropanamido)-3-phenylpropanoic acid (Fmoc-FF-OH). PHBzoMA homopolymers can only self-assemble into nanospheres without dent, and the addition of a short peptide introduced hydrogen bonding and complementary π-π stacking interactions led to the final dented nanosphere morphology. The weight fractions of the short peptide can be adjusted to regulate the final morphology. It was confirmed that the radius of curvature of the dent on the surface was related to the organic bubble inside the protospheres prepared at critical aggregation concentration (CAC). The organic bubble can be adjusted by altering the kind of organic solvent and solution pH, which allowed control over the dented nanosphere dimension. The use of different organic solvents with various polarities allows adjustment of the interfacial tension, and hence the denting degree. This degree can also be controlled by manipulating the solution pH to (de)protonate the short peptide and homopolymer. Furthermore, the versatility of this method was highlighted by using a different homopolymer and the applicability of the resulting dented nanospheres was demonstrated by decoration with gold nanoparticles. Overall, this study provided important insights and a new simple strategy to prepare dented nanospheres in a controlled fashion.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 18
·14535-14544
·
IF 2.779
Liu Feng,Yao Zhiqian,Xu Suqiong,Fan Xiaohong,Zhang Xianke,Yuan Jujun,Yu Yi,Zhu Xiurong,Xiong Zuzhou,Yu Huajun
In this study, we develop a synergistic strategy combining defect engineering and porous structures to increase the photocatalytic activity of graphitic carbon nitride (g-C 3 N x ) under simulated sunlight. The photocatalytic efficiency of porous g-C 3 N x containing nitrogen defects for the degradation of Rhodamine B (RhB) is about 3.5 times higher than that of pristine g-C 3 N 4 synthesized by direct calcination, which can be attributed to its large specific surface area and surface nitrogen defects. Trapping experiments and electron spin resonance tests reveal that superoxide radical (·O 2 − ) is confirmed to be the predominant active specie for photodegrading RhB.
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高影响因子
European Journal of Wood and Wood Products
·
2023
·
IF 2.6
Yang Zheng,Liang Lulu,Dong Qing,Chen Furong,Pang Yajun,Chen Hao,Wu Sai,Shen Zhehong
Bamboo resources can contribute to reducing wood shortages and neutralizing CO 2 . However, laminated bamboo-veneer lumber (LBVL), the main bamboo product, has limited applications due to its poor bonding performance. It is because the urea-formaldehyde (UF) adhesive used in LBVL does not have high bonding stability, which results in the warping and cracking of the board. Therefore, a simple but effective method has been proposed to improve the bonding performance of UF adhesives. Specifically, UF adhesives are strengthened and toughened through a synergistic interaction with acrylate emulsion and clay minerals. Consequently, the prepared LBVL shows excellent bonding strength with an average dip-peeling of 0.92 cm. Furthermore, compared to the unmodified UF adhesive, the synergistically enhanced UF adhesive has a prolonged gelation time, a lower free formaldehyde release level, and improved thermal stability. In addition, the prepared LBVL exhibits reduced flammability based on cone calorimetry results. Herein, the combined effect of acrylate emulsion and clay minerals was investigated, resulting in a synergistic enhancement of bonding performance and other properties. This enhancement not only contributes to the reduction of wood shortages but also aids in the neutralization of CO 2 .
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JOURNAL OF POROUS MATERIALS
·
2018
·Vol. 25
·期 5
·1531-1539
·
IF 1.858
Wang Shiwei,Chen Keyu,Wang Qibao
The catalytic performance of Yb(OTf) 2 –SO 3 –SBA-15 in the transformation of cellulose into lactic acid was investigated in this paper. The sol–gel technique and the chemical grafting approach were introduced to obtain the SBA-15 and Yb(OTf) 2 –SO 3 –SBA-15, respectively. Yb(OTf) 2 –SO 3 –SBA-15 catalysts were characterized by elemental analysis, ICP-OES, XRD, N 2 adsorption, FTIR, TGA, 29 Si-MAS NMR, SEM and TEM. It is found that the Yb(OTf) 2 –SO 3 –SBA-15 catalyst can catalyze the transformation of cellulose into lactic acid effectively. When the temperature is 220 °C and the reaction time is 60 min, the maximum yield of lactic acid can reach 74.06%. Yb(OTf) 2 –SO 3 –SBA-15 catalyst can be recycled for more than five times without noticeable loss in activity.
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Nano Research
·
2020
·Vol. 13
·期 4
·975-982
·
IF 8.183
Yan Xiaoxiao,Gu Minyi,Wang Yao,Xu Lin,Tang Yawen,Wu Renbing
Searching for inexpensive, efficient and durable electrocatalysts with earth-abundant elements toward the hydrogen evolution reaction (HER) is of vital importance for the future sustainable hydrogen economy, yet still remains a formidable challenge. Herein, a facile template-engaged strategy is demonstrated for the direct in-situ growth of Ni nanoparticles and N-doped carbon nanotubes on carbon nanorod substrates, forming a hierarchically branched architecture (abbreviated as Ni@N-C NT/NRs hereafter). The elaborate construction of such unique hierarchical structure with tightly encapsulated Ni nanoparticles and open configuration endows the as-fabricated Ni@N-C NT/NRs with abundant well-dispersed active sites, enlarged surface area, reduced resistances of charge transfer and mass diffusion, and reinforced mechanical robustness. As a consequence, the optimal Ni@N-C NT/NR catalyst demonstrates superior electrocatalytic activity with relatively low overpotential of 134 mV to deliver a current density of 10 mA·cm −2 and excellent stability for HER in 0.1 M KOH, holding a great promise for practical scalable H 2 production. More importantly, this work offers a reliable methodology for feasible fabrication of robust high-performance carbon-based hierarchical architectures for a variety of electrochemical applications.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
·
2021
·Vol. 38
·期 4
·1065-1072
·
IF 1.307
Yang Zhichen,Kang Xiaoting,Zou Bo,Yuan Xuna,Li Yajie,Wu Qin,Guo Yupeng
The massive discharge of biomass wastes not only causes waste of resources, but also pollutes the environment. Therefore, converting biomass wastes into carbon materials is an effective way to solve the above problems. Here, using biomass waste pig nails as raw materials and K 2 CO 3 as chemical activators, the N-doped porous carbon(KPNC) is prepared by direct pyrolysis. As an electrode for supercapacitors, the electrochemical tests of KPNCs showed that they exhibited good electrochemical performance and excellent cycling stability. When the current density is 0.2 A/g, the specific capacitance is up to 344.6 F/g. Moreover, it still maintains 97.6% initial capacitance retention after 2000 cycles at a high current density of 5 A/g. Above exceptional electrochemical performances may be ascribed to an appropriate porous structure( S micro / S total =80.31%, V micro / V total =76.19%), high nitrogen contents(4.44%, atomic fraction), oxygen contents(9.13%, atomic fraction) as well as small internal resistance. The above experimental results show that the conversion of pig nails to porous carbon can reduce the waste of resources and alleviate environmental pollution.
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MOLECULAR DIVERSITY
·
2015
·Vol. 19
·期 3
·447-458
·
IF 1.896
Niu Ben,Xie Ping,Wang Min,Wang Yanjie,Zhao Wannian,Pittman Charles U.,Zhou Aihua
A series of seven- and eight-membered ring – N,O –, – N,N –, and – N,S –sultams were effectively synthesized via tandem reactions involving oxa-, aza-, and thia-Michael addition to vinyl sulfonamides. These reactions are summarized here since they enrich current synthetic methodologies for sultams and provide a good example of sultam diversity-oriented synthesis. All reactions proceeded under relatively mild and environmentally friendly conditions, and all these reactions are quite suitable for the rapid preparation of sultam compound libraries, which are valuable for biological activity explorations.
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PubMed
高影响因子
Frontiers of Environmental Science & Engineering in China
·
2010
·Vol. 4
·期 2
·187-195
·
IF 0
Chang Qingyun,Zhang Jingwen,Du Xin,Ma Jingjun,Li Jingci
A simple and efficient liquid-phase microextraction (LPME) technique was developed using ultrasound-assisted emulsification solidified floating organic drop microextraction (USAE-SFODME) combined with flame atomic absorption spectrometry, for the extraction and determination of trace copper in water samples. 1-(2-Pyridylazo)-2-naphthol (PAN) was used as chelating agent. Microextraction efficiency factors (including extraction solvent type, extraction volume, time, temperature, and pH), the amount of the chelating agent, and salt effect were investigated and optimized. Under the optimum extraction conditions, figures of merit of the proposed method were evaluated. The calibration graph was linear in the range of 20–600 μg·L −1 with a detection limit of 0.76 μg·L −1 . The relative standard deviation (R.S.D) for ten replicate measurements of 20 and 400 μg·L −1 of copper was 3.83% and 2.65%, respectively. Finally, the proposed method was applied to tap water, river water, and sea water, and accuracy was assessed through the analysis of certified reference water or recovery experiments.
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Nano Research
·
2022
·Vol. 16
·期 10
·12043-12049
·
IF 10.269
Xue Kehui,Zhu Haifeng,Zhao Xingyu,Rodrigues Liana Alvares,Reddy D. Amaranatha,Zhang Yaping,Yu Lianqing
Bismuth vanadate (BiVO 4 , BVO) as a promising photoelectrode has been received great attention for photoelectrochemical (PEC) water splitting. However, the slow oxidation kinetics on the surface of BiVO 4 limited the PEC water splitting efficiency. Herein, nickel boride (Ni 3 B, NB) nanoparticles, generally used in electrocatalytic field material, were modified on the surface of BiVO 4 photoelectrode as an efficient cocatalyst to accelerate the oxygen evolution reaction. The as-prepared BVO-NB-5P photoelectrode exhibits a remarkable photocurrent density of 1.47 mA·cm −2 at 1.23 V versus the reversible hydrogen electrode (RHE) under air mass (AM) 1.5 G illumination, which is about 2.8 times higher than the bare BiVO 4 photoelectrode, and its water splitting rate is 11.3 times higher than bare BiVO 4 . The PEC studies reveal that the spin coated Ni 3 B crystal cocatalyst could effectively reduce the water oxidation barrier, and improve the surface charge injection efficiency to 94%, which could boost the photogenerated holes reaction to enhance the PEC performance of BiVO 4 photoelectrode.
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AAPS PHARMSCITECH
·
2021
·Vol. 22
·期 7
·1-7
·
IF 3.246
Wang Beilei,Shan Xiaoxiao,Lv Shujie,Zha Liqiong,Zhang Caiyun,Dong Qiannian,Chen Weidong
3-O-β-D-galactosylated resveratrol (Gal-Res) was synthesized from resveratrol (Res) and 3-O-β-D-galactose (Gal) in our previous study. In order to improve the pH sensitivity and bioavailability of Gal-Res, Gal-Res nanoparticles (Gal-Res NPs) were prepared using polydopamine (PDA) as a drug carrier. The drug loading (DL %) and entrapment efficiency (EE %) of Gal-Res NPs were 46.80% and 88.06%. The average particle size, polydispersity index (PDI), and Zeta potential of Gal-Res NPs were 179.38 ± 2.83 nm, 0.129 ± 0.013, and − 28.05 ± 0.36 mV, respectively. The transmission electron microscope (TEM) showed that Gal-Res NPs had uniform spherical morphology. Compared with the fast release of raw Gal-Res, the in vitro release of Gal-Res NPs was slow and pH-sensitive. The results of the blood vessel irritation and hemolysis test demonstrated that Gal-Res NPs had good hemocompatibility. The pharmacokinetics study in rats showed that area under the curve of plasma drug concentration time (AUC 0→600 ) and half-life (t 1/2 ) of Gal-Res NPs were enhanced 1.82-fold and 2.19-fold higher than those of raw Gal-Res. The in vivo biodistribution results showed that Gal-Res NPs were more distributed in liver tissue than Gal-Res. Gal-Res NPs with high bioavailability and liver accumulation were hopeful drug delivery systems (DDS) to treat liver diseases. Graphical abstract
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PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 27
·期 3
·3021-3025
·
IF 1.569
Zhang Xiwei,Tang Zhenjie,Hu Dan,Wang Zhi,Yu Fengjun,Cui Haitao,Xu Tongshuai,Ju Lin
A facile method was used to oxidize p-type Zinc Selenide (ZnSe) nanowires into n-type Zinc Oxide (ZnO) through a 700 °C annealing process in air. Single crystal ZnSe nanowires, with a hole concentration of 0.805 × 10 18 cm −3 and
a negative photoconductivity, were oxidized into polycrystalline ZnO nanowires with an electron concentration of 4.88 × 10 18 cm −3 and a positive photoconductivity. Additionally, both the as-synthesized ZnSe nanowires and the post-oxidized ZnO nanowires presented excellent optoelectronic properties. This method can be used to construct radial p–n junctions or other nano-devices based on a single NW through a regioselective oxidation process.
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危险品化学品经营许可证（带存储）