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  1. AU="Sun, Linna"
  2. AU="Singhmar, Sakshi"
  3. AU="Jarvin, M."
  4. AU="Hahn, Reinhard"
  5. AU="Weiner, January Mikolaj"
  6. AU="Shen, Bingjun"
  7. AU="Flournoy, John C"
  8. AU="Sweat, Richard S"
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  10. AU="van Roessel, S"
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  12. AU="Ilsby, Christian Schaadt"
  13. AU="Yang, Mo-Hua"
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  28. AU=Houck J C AU=Houck J C
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  1. Article ; Online: Analysis of stability law and optimization of slope angle during excavation of deep concave mine slope.

    Wu, Lili / He, Keqiang / Guo, Lu / Sun, Linna

    PloS one

    2022  Volume 17, Issue 7, Page(s) e0271700

    Abstract: Occasional collapse failure is a typical occurrence during mine slope excavation processes. This study aimed to investigate the disaster law in the process of mining slope excavation, and further explore the optimal selection of excavation angle. Based ... ...

    Abstract Occasional collapse failure is a typical occurrence during mine slope excavation processes. This study aimed to investigate the disaster law in the process of mining slope excavation, and further explore the optimal selection of excavation angle. Based on the systematic analysis of the residual sliding force and deformation response characteristics during slope excavation, the increment of the residual sliding force increases and the stability coefficient decreases with the increase in excavation depth. Additionally, a numerical model of the Jinchuan mining area in Jinchuan City, Gansu Province, China was created using the Midas-GTS finite element software. The influence of different excavation slope angles on slope stability was analyzed via numerical simulation under certain step slope height and width. The results show that the force and deformation of the slope were unfavorable to slope stability, and the slope stability coefficient would decrease gradually with the increase in slope angle. In addition, the optimal excavation angle combination ranges were determined as 62°~ 65°, 64°~ 67°, 67°~ 69°, 70°~ 71°, 73°, 75°~ 76°, 77°~ 80°considering the stability and maximum recovery. Therefore, the above research results verify the loading effect of mine slope excavation, and can serve as a reference for studies on the optimal range of excavation angles for the mine slope.
    MeSH term(s) China ; Computer Simulation ; Mechanical Phenomena ; Mining
    Language English
    Publishing date 2022-07-21
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0271700
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Long-term organic fertilizer and biofertilizer application strengthens the associations between soil quality index, network complexity, and walnut yield

    Du, Tianyu / Hu, Qufei / He, Haiyun / Mao, Wenjing / Yang, Zhou / Chen, Hong / Sun, Linna / Zhai, Meizhi

    European Journal of Soil Biology. 2023, p.103492-

    2023  , Page(s) 103492–

    Abstract: Although various combinations of organic-inorganic fertilizers can enhance plant yields, the effects of different fertilization regimes on the associations between rhizosphere soil microorganisms and plant productivity are poorly understood. In this ... ...

    Abstract Although various combinations of organic-inorganic fertilizers can enhance plant yields, the effects of different fertilization regimes on the associations between rhizosphere soil microorganisms and plant productivity are poorly understood. In this study, we investigated the rhizosphere soil microbial composition and structure and the relationships among rhizospheric microorganisms, soil properties, and yield in a walnut (Juglans regia L.) orchard after 7 years of applying different fertilization regimes. The combinations of organic and inorganic fertilizers were found to enhance walnut yield, soil quality index (SQI), and soil biodiversity (bacterial and fungal) (P < 0.05). The soil microbial community composition and co-occurrence networks of rhizosphere soil (RS) and bulk soil (BS) showed different responses to fertilization. Bacillus and Pseudomonas were mainly enriched in RS, whereas Fusarium was significantly more abundant in BS (P < 0.05) under a combined chemical fertilizer, organic fertilizer, and biofertilizer treatment (F + O + BO). Network analysis revealed that organic fertilizer and biofertilizer reduced the competition and network complexity among rhizosphere microbial communities (edges: RS = 388, BS = 967; modularity: RS = 0.790, BS = 0.834). Furthermore, SQI, microbial diversity, and network complexity were significantly correlated with walnut yield (P < 0.01), among which SQI explained the highest proportion of the variation in yield (SOI: RS = 78.02%; BS = 81.18%). In addition, both yields and soil microbial community composition were significantly affected by pH, SOM, TN, and SMBN. Collectively, these findings have important implications for our understanding of the relationship between woody plants and rhizospheric microorganisms.
    Keywords Fusarium ; Juglans regia ; Pseudomonas ; biodiversity ; biofertilizers ; community structure ; fungi ; mineral fertilizers ; orchards ; organic fertilizers ; pH ; rhizosphere ; soil ; soil biology ; soil microorganisms ; soil quality ; walnuts ; Long-term fertilization ; Soil properties ; Rhizosphere soil microorganism ; Yield
    Language English
    Publishing place Elsevier Masson SAS
    Document type Article ; Online
    Note Pre-press version
    ZDB-ID 1150007-4
    ISSN 1164-5563
    ISSN 1164-5563
    DOI 10.1016/j.ejsobi.2023.103492
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 2028: Show issues

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  3. Article ; Online: The meso-fracturing mechanism of marble under unloading confining pressure paths and constant axial stress.

    Sun, Linna / Zhang, Liming / Cong, Yu / Song, Yaduo / He, Keqiang

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 17835

    Abstract: Failure tests on marble during unloading confining-pressure under constant axial stress and simulations with the particle flow code were performed. The influence mechanism of the unloading rate of the confining pressure, initial unloading stress, and ... ...

    Abstract Failure tests on marble during unloading confining-pressure under constant axial stress and simulations with the particle flow code were performed. The influence mechanism of the unloading rate of the confining pressure, initial unloading stress, and confining pressure on the failure characteristics of, and crack propagation in, marble was studied. By using the trial-and-error method, the conversion relationship between the unloading rates of confining pressures in laboratory tests and numerical simulations was ascertained. Micro-cracks formed in the unloading process of confining pressure are dominated by tension cracks, accompanied by shear cracks. The propagation of shear cracks lags that of tension cracks. As the confining pressure is increased, more cracks occur upon failure of the samples. The proportion of shear cracks increases while that of tension cracks decreases. The failure mode of samples undergoes a transition from shear-dominated failure to conjugated shear failure.
    Language English
    Publishing date 2021-09-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-97359-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Development and Validation of a Radiomics Nomogram for Predicting Clinically Significant Prostate Cancer in PI-RADS 3 Lesions.

    Li, Tianping / Sun, Linna / Li, Qinghe / Luo, Xunrong / Luo, Mingfang / Xie, Haizhu / Wang, Peiyuan

    Frontiers in oncology

    2022  Volume 11, Page(s) 825429

    Abstract: Purpose: To develop and validate a radiomics nomogram for the prediction of clinically significant prostate cancer (CsPCa) in Prostate Imaging-Reporting and Data System (PI-RADS) category 3 lesions.: Methods: We retrospectively enrolled 306 patients ... ...

    Abstract Purpose: To develop and validate a radiomics nomogram for the prediction of clinically significant prostate cancer (CsPCa) in Prostate Imaging-Reporting and Data System (PI-RADS) category 3 lesions.
    Methods: We retrospectively enrolled 306 patients within PI-RADS 3 lesion from January 2015 to July 2020 in institution 1; the enrolled patients were randomly divided into the training group (n = 199) and test group (n = 107). Radiomics features were extracted from T2-weighted imaging (T2WI), apparent diffusion coefficient (ADC) imaging, and dynamic contrast-enhanced (DCE) imaging. Synthetic minority oversampling technique (SMOTE) was used to address the class imbalance. The ANOVA and least absolute shrinkage and selection operator (LASSO) regression model were used for feature selection and radiomics signature building. Then, a radiomics score (Rad-score) was acquired. Combined with serum prostate-specific antigen density (PSAD) level, a multivariate logistic regression analysis was used to construct a radiomics nomogram. Receiver operating characteristic (ROC) curve analysis was used to evaluate radiomics signature and nomogram. The radiomics nomogram calibration and clinical usefulness were estimated through calibration curve and decision curve analysis (DCA). External validation was assessed, and the independent validation cohort contained 65 patients within PI-RADS 3 lesion from January 2020 to July 2021 in institution 2.
    Results: A total of 75 (24.5%) and 16 (24.6%) patients had CsPCa in institution 1 and 2, respectively. The radiomics signature with SMOTE augmentation method had a higher area under the ROC curve (AUC) [0.840 (95% CI, 0.776-0.904)] than that without SMOTE method [0.730 (95% CI, 0.624-0.836),
    Conclusion: The radiomics nomogram that incorporates the MRI-based radiomics signature and PSAD can be conveniently used to individually predict CsPCa in patients within PI-RADS 3 lesion.
    Language English
    Publishing date 2022-01-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2649216-7
    ISSN 2234-943X
    ISSN 2234-943X
    DOI 10.3389/fonc.2021.825429
    Database MEDical Literature Analysis and Retrieval System OnLINE

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