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1

Influence of synergistic effect between dodecylamine and sodium oleate on improving the hydrophobicity of fluorapatite

100%

Cao Q. , Luo B. , Wen S. , Cheng J.

Physicochemical Problems of Mineral Processing

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2017

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tom Vol. 53, iss. 1

42--55

EN

The influence of synergistic effect between dodecylamine (DDA) and sodium oleate (NaOl) on the hydrophobicity of fluorapatite (FA) was investigated with contact angle, surface tension, XPS and zeta potential studies. The role of pH and the mixing ratio of surfactants on the synergistic behavior were considered. Basing on the contact angle results the suitable pH for the NaOl-DDA mixture was pH 9.5. A further study indicated that the 3:7 DDA-NaOl mixtures could notably improve the contact angle comparing to that only with DDA or NaOl. In the solution of this mixture, the DDA cation and DDA molecule both adsorb at the FA surface as revealed by the XPS spectra results. The zeta potential analysis further suggested that the adsorption of oleate at the FA surface was also improved. The presence of DDA cation and DDA molecule was expected to result in a uniform packing of surfactants at the FA surface.

2

Ethnobotanical study on Garcinia (Clusiaceae) in China

88%

Lin F. , Luo B. , Cheng Z. , Li P. , Long C.

Acta Societatis Botanicorum Poloniae

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2021

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tom 90

3

Function of distress calls in least horseshoe bats: a Field study using playback experiments

88%

Wu X. , Pang Y. , Luo B. , Wang M. , Feng J.

Acta Chiropterologica

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2018

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tom 20

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nr 2

EN

Many social animals utter distress calls in the context of fear. These vocalizations may serve to attract audiences for help, warn individuals of danger, and confuse the predator. Here, we aim to assess the function of distress calls in free-living least horseshoe bats, Rhinolophus pusillus. We recorded distress calls from four allopatric colonies in mainland China. Playback trials, consisting of distress calls, silence, and noise, were presented to bats outside three bat roosts. Rhinolophus pusillus emitted long, harsh, broadband calls when under duress. Playback of distress calls induced a significant increase in bat passes at the loudspeaker in comparison with control trials. The number of recorded echolocation pulses increased 3.2–6.1 folds during playbacks of distress calls compared to playbacks of silence, and 2.9–5.2 folds compared to playbacks of noise. There was a positive association between bat passes and echolocation vocalizations. However, some bats delayed their emergence from the roost in response to distress call stimuli. Despite similar delayed responses, more bat passes were detected in the presence of allopatric distress calls than those from colony members. Overall, the results indicate that distress calls could attract and warn conspecifics in least horseshoe bats.

4

Rapid and specific detection of Escherichia coli O157:H7 in ground beef using immunomagnetic separation combined with loop-mediated isothermal amplification

75%

Qin Y. , Puthiyakunnon S. , Zhang Y. , Wu X. , Boddu S. , Luo B. , Fan H.

Polish Journal of Food and Nutrition Sciences

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2018

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tom 68

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nr 2

EN

Escherichia coli O157:H7 is well known for many foodborne outbreaks that lead to fatal infections in human being worldwide. The objective of this study was to develop a rapid and sensitive method for detection of EHEC O157:H7 from ground beef using a method that combined immunomagnetic separation (IMS) with loop-mediated isothermal amplifi cation (LAMP). The EHEC O157:H7 cells were separated with Dynabeads coated with antiEHEC O157:H7 after a short enrichment for 4 h. Then, EHEC O157:H7 was identifi ed by LAMP assay for amplifying and detecting the rfbE gene, which is highly conserved in all EHEC O157:H7 strains and exhibits strain-specific gene expression. The LAMP method results analyzed with real time turbidity measurements showed a high specificity and sensitivity, with a positive detection rate of amplifi cation of EHEC O157:H7 DNA diluted to a minimum equivalent concentration of 1.8 × 101 CFU/mL, which was 10 times more sensitive than the conventional PCR assay. The IMS followed with LAMP could capture and detect a bacterial concentration as low as 3×101 CFU/mL from the meat samples, which was close to the sensitivity of LAMP assay with pure culture. IMS combined with realistic LAMP method is a simple, rapid, highly specific gene amplifi cation technology that is suitable for implementing as a screening assay in basic laboratory and field test for detecting food contamination.

5

Ethnobotany of Acorus in China

63%

Shu H. , Zhang S. , Lei Q. , Zhou J. , Ji Y. , Luo B. , Hong L. , Li F. , Liu B. , Long C.

Acta Societatis Botanicorum Poloniae

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2018

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tom 87

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nr 2

EN

In China, species in the genus Acorus are used for many different purposes, viz., in traditional medicine, for rituals, and as ornamental plants. Acorus calamus (sweet flag) has been a symbolic plant in Chinese culture for many centuries and is used as a ceremonial object in festivals throughout the country. For other Acorus species in China, ethnobotanical records are few. During field investigations from 2006 to 2017, we interviewed 573 individuals representing ethnic groups such as the Miao, Yao, Buyi, Shui, Tujia, Dong, She, Maonan, Zhuang, Yi, and Han people. Various ethnobotanical approaches were adopted in the field surveys, including key informant interviews, semistructured interviews, participatory observation, direct observation, etc. The results have revealed a rich treasure trove of traditional knowledge on Acorus in China. Two species (A. macrospadiceus and A. gramineus) were used by ethnic groups as spices to add flavor to meat. Through the study found that all the species of Acorus had medicinal value, especially A. tatarinowii, deafness, blindness, and digestive disorders were among the conditions commonly treated using these plants. Traditional knowledge of the cultural, ethnomedicinal, and food values of Acorus, based on our recent literature surveys and field investigations in China is presented here. A better understanding of Acorus is vital for conserving the plants and the traditional knowledge associated with them.

6

Nosema sp. PM-1, a new isolate of microsporidian from infected Papilio machaon Linnaeus, based on ultrastructure and molecular identification

63%

Liu T. , Xu J. , Luo B. , Chen J. , Li Z. , Li T. , Pan G. , Li X. , Zhou Z.

Acta Parasitologica

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2015

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tom 60

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nr 2

7

Recent advances in gate dielectrics and polarised light emission from GaN

51%

Pearton S. J. , Abernathy C. R. , Gila B. P. , Onstine A. H. , Overberg M. E. , Thaler G. T. , Jihyun K. , Luo B. , Mehandru R. , Ren F. , Park Y. D.

Opto-Electronics Review

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2002

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tom Vol. 10, No. 4

231-236

EN

Inversion behaviour has been demonstrated in gate-controlled p-GaN diodes using both MgO and Sc₂O₃ gate dielectrics and implanted n⁺ regions to provide a source of inversion charge. The total surface state density was estimated from capacitance-voltage or charge pumping measurements to be in the range 3 - 8 x 10¹² cm² after the implant activation annealing to form the source and drain regions. In addition, Mn doping of GaN during growth by molecular beam epitaxy is found to produce room temperature ferromagnetism under conditions where the material remains single-phase. The layers can be used as injectors of spin-polarised carriers into light-emitting diode structures, with the potential for creating polarised optical output.