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  1. Article ; Online: Laboratory Risk Assessment Based on SHELL-HACCP-Cloud Model

    Xiaoning Zhao / Zhongcheng Wei / Yukun Gao / Penggang Yin

    Sustainability, Vol 15, Iss 24, p

    2023  Volume 16590

    Abstract: With the increasing demand and expanding scale of laboratories in colleges and universities, laboratory accidents frequently occur, seriously impacting personal health, schools, society, and the environment. Scientific and effective risk assessment is ... ...

    Abstract With the increasing demand and expanding scale of laboratories in colleges and universities, laboratory accidents frequently occur, seriously impacting personal health, schools, society, and the environment. Scientific and effective risk assessment is crucial to prevent accidents. Therefore, in order to effectively reduce the risk of chemical laboratories and minimize the frequency of accidents. This study employs the combination of the SHELL model and HACCP system to analyze the potential sources of hazards in hazardous chemical laboratories and establish a risk assessment index system. Based on the Cloud model, a dynamic risk assessment model for the laboratory is established to quantitatively evaluate the risk level of the evaluation results. In order to ensure the rationality of the assessment results, the subjective and objective weights are combined by the principle of minimizing information entropy. Case analysis proves the scientific validity of the evaluation results of the model, which can assist laboratory managers in formulating emergency plans and risk management mechanisms to reduce or eliminate the occurrence of experimental accidents. This approach ensures the safe and sustainable development of schools and laboratories, which is conducive to the progress of researchers’ scientific research results.
    Keywords chemical laboratory accidents ; dynamic risk assessment ; cloud model ; risk management ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 690 ; 910
    Language English
    Publishing date 2023-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Incorporation and solidification mechanism of manganese doped cement clinker

    Nan Yang / Aihong Li / Qing Liu / Yanshuai Cui / Zhaojia Wang / Yukun Gao / Jianping Guo

    Frontiers in Chemistry, Vol

    2023  Volume 11

    Abstract: Using municipal and industrial solid waste as a substitute raw material and fuel in cement rotary kiln co-processing is considered an economic and environmentally friendly alternative to the use of traditional fuels. However, the presence of heavy metals ...

    Abstract Using municipal and industrial solid waste as a substitute raw material and fuel in cement rotary kiln co-processing is considered an economic and environmentally friendly alternative to the use of traditional fuels. However, the presence of heavy metals in solid waste is a growing concern in the cement rotary kiln co-processing technique. The solidification mechanism of heavy metals in cement clinker is directly related to their stabilization. Cement clinkers doped with manganese oxide (MnO2: 0.0%–5.0% wt%) were prepared in a laboratory to investigate the impacts of extrinsic Mn on cement clinker calcination. The insignificant changes in X-ray diffractometer patterns indicated that the fixed Mn had little influence on the mineral lattice structure. Raman spectra and X-ray photoelectron spectroscopy revealed the transformation of the silicate phase when the Mn dose was increased. Moreover, the satisfactory solidification ratio confirmed the incorporation of Mn in the cement clinker. These results provided evidence of the influence rule of Mn in the cement clinker calcination process. Furthermore, Raman spectroscopy showed great potential for the qualitative and semi-quantitative analysis of the cementitious materials derived from cement rotary kiln co-processing. These results will be important for the further development of green cement manufacturing technology.
    Keywords heavy metals ; Raman ; XPS ; cement kiln co-processing ; immobilization ; Chemistry ; QD1-999
    Subject code 710
    Language English
    Publishing date 2023-04-01T00:00:00Z
    Publisher Frontiers Media S.A.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Performance Optimization Approach of Polymer Modified Asphalt Mixtures with PET and PE Wastes

    Faizan Mushtaq / Zhian Huang / Syyed Adnan Raheel Shah / Yinghua Zhang / Yukun Gao / Marc Azab / Sajid Hussain / Muhammad Kashif Anwar

    Polymers, Vol 14, Iss 2493, p

    A Safety Study for Utilizing Eco-Friendly Circular Economy-Based SDGs Concepts

    2022  Volume 2493

    Abstract: Eco-friendly waste utilization helps in the development of sustainable infrastructures. Recently, researchers have focused on the production of road infrastructures using the circular economy concept of human safety. The objective of this study is to ... ...

    Abstract Eco-friendly waste utilization helps in the development of sustainable infrastructures. Recently, researchers have focused on the production of road infrastructures using the circular economy concept of human safety. The objective of this study is to investigate and explore the utilization of optimum polymer waste content for the development of polymer-modified asphalt mixtures using response surface methodology (RSM). RSM based on Box–Behnken design (BBD) was employed to optimize experimental design and included three factors: X1, polymer type; X2, polymer contents; and X3, testing day. The optimized responses determined by the RSM were as follows: MS of 42.98 kN, MF of 5.08 mm, and MQ of 8.66 kN/mm, indicating a favorable and consistent precision in comparison with experimental values. Moreover, the Marshall characteristics of samples prepared with PE were quite improved compared to PET. In conclusion, the incorporation of such polymer wastes in road construction is a sustainable and cost-effective way of improving their engineering properties. This study will help in the development of sustainable road infrastructures supporting human safety and environmentally friendly practices.
    Keywords sustainability ; polymer wastes ; polyethylene terephthalate (PET) ; composites ; mechanical properties ; SDGs ; Organic chemistry ; QD241-441
    Subject code 690
    Language English
    Publishing date 2022-06-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Study on the Oxidation Kinetics and Microreactivity of Water-Immersed Coal

    Zhian Huang / Ye Tian / Yukun Gao / Zhenlu Shao / Yinghua Zhang / Xiaohan Liu

    ACS Omega, Vol 5, Iss 28, Pp 17287-

    2020  Volume 17303

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2020-07-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Influence of Temperature Change on the Change Law of Free Radicals in Coal

    Yichao Yin / Yinghua Zhang / Zhian Huang / Xiangming Hu / Yukun Gao / Zhenlu Shao / Xuyao Qi / Yifu Yang

    ACS Omega, Vol 6, Iss 49, Pp 33685-

    2021  Volume 33693

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2021-11-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Numerical Simulation of the Dust Production and Transportation Law of an Intermediate Mine Heap

    Zhian Huang / Yang Huang / Zhijun Yang / Jun Zhang / Yukun Gao / Zhenlu Shao / Yinghua Zhang / Mingli Chen

    ACS Omega, Vol 6, Iss 2, Pp 1623-

    2021  Volume 1635

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article: Hydrophobic paper-based SERS platform for direct-droplet quantitative determination of melamine

    Zhang, Chenmeng / Tingting You / Nan Yang / Yukun Gao / Li Jiang / Penggang Yin

    Food chemistry. 2019 Feb. 21,

    2019  

    Abstract: A novel hydrophobic-SERS substrate platform based on silver nanoparticles (AgNPs) functionalized commercially available filter paper was reported. Compared with conventional substrates, not only could this novel SERS substrate meet the requirements of ... ...

    Abstract A novel hydrophobic-SERS substrate platform based on silver nanoparticles (AgNPs) functionalized commercially available filter paper was reported. Compared with conventional substrates, not only could this novel SERS substrate meet the requirements of simple and large-scale preparation, but also realized direct droplet-detection with reusable property. In this work, the fabrication, physical characterization, and SERS sensitivity of the substrates to spot-on food determination were studied. The experimental results show the method exhibited high reproducibility with less than 9% spot-to-spot variation in Raman intensity. Furthermore, the method was successfully applied to detect melamine in diluted milk with the instrument detection limit (IDL) down to 1 ppm in a linear correlation (1 ppm-1000 ppm). In addition, this SERS substrate could also be applied successfully in other fields, such as the determination of pesticide (thiram) and dye (malachite green) in real environment.
    Keywords detection limit ; hydrophobicity ; malachite green ; melamine ; milk ; nanosilver ; physical properties ; quantitative analysis ; thiram
    Language English
    Dates of publication 2019-0221
    Size p. .
    Publishing place Elsevier Ltd
    Document type Article
    Note Pre-press version
    ZDB-ID 243123-3
    ISSN 1873-7072 ; 0308-8146
    ISSN (online) 1873-7072
    ISSN 0308-8146
    DOI 10.1016/j.foodchem.2019.02.094
    Database NAL-Catalogue (AGRICOLA)

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  8. Article: One-Step Preparation Method of Flexible Metafilms on the Water–Oil Interface: Self-Assembly Surface Plasmon Structures for Surface-Enhanced Raman Scattering Detection

    Yang, Nan / Tingting You / Yukun Gao / Sichen Lu / Penggang Yin

    Langmuir. 2019 Mar. 20, v. 35, no. 13

    2019  

    Abstract: The present study demonstrated a one-step method for the first time to fabricate self-assembled gold nanoparticle (AuNP) metafilms at the water–toluene interface by adding polystyrene–polyisoprene–polystyrene as the support layer. The thiolated ... ...

    Abstract The present study demonstrated a one-step method for the first time to fabricate self-assembled gold nanoparticle (AuNP) metafilms at the water–toluene interface by adding polystyrene–polyisoprene–polystyrene as the support layer. The thiolated polyethylene glycol and ethanol were used to tune the surface charge density on the AuNPs, constructing a balanced situation at the water–toluene interface. The flexible (AuNP) metafilm can be easily obtained after evaporation of the toluene phase and further used as a surface-enhanced Raman scattering (SERS) substrate for trace thiram detection. The SERS sensitivity was tested using standard Raman probes such as crystal violet and malachite green, both with the detect concentration reaching 1 × 10–¹¹ M. Moreover, the excellent reproducibility and elastic properties make the metafilm promising in practical detection. Hence, the trace thiram detection on an orange pericarp was inspected with the detection limit of 0.5 ppm (1 × 10–⁶ M) as well as a favorable linearity relation with a correlation coefficient of 0.979, exactly matching the realistic application requirements.
    Keywords Raman spectroscopy ; ethanol ; evaporation ; gentian violet ; malachite green ; nanogold ; oil-water interface ; pericarp ; polyethylene glycol ; thiram ; toluene
    Language English
    Dates of publication 2019-0320
    Size p. 4626-4633.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 2005937-1
    ISSN 1520-5827 ; 0743-7463
    ISSN (online) 1520-5827
    ISSN 0743-7463
    DOI 10.1021/acs.langmuir.8b04271
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  9. Article ; Online: Changes in the root-associated bacteria of sorghum are driven by the combined effects of salt and sorghum development.

    Yukun, Gao / Jianghui, Cui / Genzeng, Ren / Shilin, Wei / Puyuan, Yang / Congpei, Yin / Hongkai, Liang / Jinhua, Chang

    Environmental microbiome

    2021  Volume 16, Issue 1, Page(s) 14

    Abstract: Background: Sorghum is an important food staple in the developing world, with the capacity to grow under severe conditions such as salinity, drought, and a limited nutrient supply. As a serious environmental stress, soil salinization can change the ... ...

    Abstract Background: Sorghum is an important food staple in the developing world, with the capacity to grow under severe conditions such as salinity, drought, and a limited nutrient supply. As a serious environmental stress, soil salinization can change the composition of rhizosphere soil bacterial communities and induce a series of harm to crops. And the change of rhizospheric microbes play an important role in the response of plants to salt stress. However, the effect of salt stress on the root bacteria of sorghum and interactions between bacteria and sorghum remains poorly understood.
    Results: The purpose of this study was to assess the effect of salt stress on sorghum growth performance and rhizosphere bacterial community structure. Statistical analysis confirmed that low high concentration stress depressed sorghum growth. Further taxonomic analysis revealed that the bacterial community predominantly consisted of phyla Proteobacteria, Actinobacteria, Acidobacteria, Chloroflexi, Bacteroidetes and Firmicutes in sorghum rhizosphere soil. Low salt stress suppressed the development of bacterial diversity less than high salt stress in both bulk soil and planted sorghum soil. Different sorghum development stages in soils with different salt concentrations enriched distinctly different members of the root bacteria. No obviously different effect on bacterial diversity were tested by PERMANOVA analysis between different varieties, but interactions between salt and growth and between salt and variety were detected. The roots of sorghum exuded phenolic compounds that differed among the different varieties and had a significant relationship with rhizospheric bacterial diversity. These results demonstrated that salt and sorghum planting play important roles in restructuring the bacteria in rhizospheric soil. Salinity and sorghum variety interacted to affect bacterial diversity.
    Conclusions: In this paper, we found that salt variability and planting are key factors in shifting bacterial diversity and community. In comparison to bulk soils, soils under planting sorghum with different salt stress levels had a characteristic bacterial environment. Salinity and sorghum variety interacted to affect bacterial diversity. Different sorghum variety with different salt tolerance levels had different responses to salt stress by regulating root exudation. Soil bacterial community responses to salinity and exotic plants could potentially impact the microenvironment to help plants overcome external stressors and promote sorghum growth. While this study observed bacterial responses to combined effects of salt and sorghum development, future studies are needed to understand the interaction among bacteria communities, salinity, and sorghum growth.
    Language English
    Publishing date 2021-08-11
    Publishing country England
    Document type Journal Article
    ISSN 2524-6372
    ISSN (online) 2524-6372
    DOI 10.1186/s40793-021-00383-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: An ultrasensitive “turn-off” SERS sensor for quantitatively detecting heparin based on 4-mercaptobenzoic acid functionalized gold nanoparticles

    Zhang, Chenmeng / Xiu Liang / Tingting You / Nan Yang / Yukun Gao / Penggang Yin

    Analytical methods. 2017 May 4, v. 9, no. 17

    2017  

    Abstract: An ultrasensitive “turn off” Surface Enhanced Raman Spectroscopy (SERS) sensor was developed for the detection of heparin based on the anti-aggregation of 4-mercaptobenzoic acid stabilized gold nanoparticles. In this paper, protamine, a small protein ... ...

    Abstract An ultrasensitive “turn off” Surface Enhanced Raman Spectroscopy (SERS) sensor was developed for the detection of heparin based on the anti-aggregation of 4-mercaptobenzoic acid stabilized gold nanoparticles. In this paper, protamine, a small protein molecule with positive charges, could induce the aggregation of 4-MBA functionalized gold nanoparticles via surface electrostatic interaction. However, in the presence of heparin, the aggregation of 4-MBA functionalized gold nanoparticles decreased due to the fact that heparin has a strong affinity toward protamine, further causing the loss of the Raman enhanced effect. The normalized SERS intensity of the Raman reporter was proportional to the concentration of added heparin and a good linear detection range was obtained from 0.05 to 20 ng mL⁻¹ (R² = 0.999) with a calculated detection limit of 0.03 ng mL⁻¹. Moreover, the developed highly selective method is also successfully demonstrated in fetal bovine serum. Our method is specific, simple and cheap, which could be applied to other further research studies of heparin.
    Keywords Raman spectroscopy ; electrostatic interactions ; fetal bovine serum ; heparin ; nanogold
    Language English
    Dates of publication 2017-0504
    Size p. 2517-2522.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ZDB-ID 2515210-5
    ISSN 1759-9679 ; 1759-9660
    ISSN (online) 1759-9679
    ISSN 1759-9660
    DOI 10.1039/c7ay00494j
    Database NAL-Catalogue (AGRICOLA)

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