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As a new environmentally friendly and recyclable material, recycling construction and demolition waste(CDW) have received extensive attention. If it can be applied in road engineering, it will not only reduce the exploitation of sand and stone, save resources, but also reduce the cost of the project. This is of great significance to the development of highway construction in China. However, compared with natural aggregate, CDW has the disadvantages of low strength and high water absorption. Therefore, there are obvious differences between the CDW subgrade and the traditional subgrade. Based on the existing research results, the basic performance, road performance and settlement degeneration characteristics of CDW in subgrade filling are expounded. Finally, the future research directions are analyzed and prospected, which is helpful to promote the application of construction waste recycling materials in subgrade engineering. [ABSTRACT FROM AUTHOR]

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To explore the differences of DWI and IVIM DWI related parameters in different prostate tissues, to evaluate the efficiency of each parameter in the differential diagnosis of benign and malignant prostate diseases, and to investigate the predictive value of IVIM DWI parameters for the malignant degree of prostate cancer(PCa). Methods: The data of 62 patients with the visiting reasons such as urgent urination, incomplete urination, frequent urination or hematuria in this hospital from January 2016 to January 2017 were collected. The related data of 16 healthy volunteers were collect ed. The MRI examination was performed in all subjects; the pathological examination results obtained within 1 month after MRI examination. Among 62 cases, 27 cases were PCa and 35 cases were prostatic hyperplasia. The apparent diffusion coefficient(ADC), true diffusion coefficient(D), perfusion fraction (f) and perfusion related diffusion coefficient(D*) were compared between different prostatic tissues; the area under the receiver operating characteristic(ROC) curve was adopted to evaluate the diagnostic values of DWI and IVIM DWI; the Spearman rank correlation test was used to evaluate the correlation between the Gleason score of PCa and the parameters of IVIM DWI. Results: The values of ADC, D and f value in the patients with PCa were lower than those in the prostatic peripheral zone, central gland and the patients with prostatic hyperplasia,and the differences were statistically significant(P<0. 05). AUC of D value for identifying benign and malignant prostate lesions was maximal(0. 954); the D value showed the significantly negative correlation with the Gleason score(r= - O. 7 41,P = 0. 001). Conclusion: In the differential diagnosis of benign and malignant prostate, the values of ADC, f, D and D * all play a certain role, and the D value is the relatively highest diagnostic efficiency and helps to evaluate the malignant degree of PCa. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To study the detection rate of bone marrow lesion(BML) with magnetic resonance imaging(MRI) and its influence factors in patients with knee osteoarthritis(KOA). Methods: A total of 182 patients with KOA, who were treated in First Affiliated Hospital of Chengdu Medical College from January 2015 to December 2017, were selected and were detected with MRI. The detection rate and location of BML in the patients with KOA were statistically analyzed. Single factor analysis and Logistic regression analysis were used to evaluate the influence factors of BML in the patients with KOA. Results: Among 182 patients with KOA,92 patients had BML, and the detection rate was 50.55%, in which, the constituent ratio of BML in lateral femur, medial femur, lateral tibia and medial tibia was more than 22.00%, the detection rate was higher than 11.00%. Single factor analysis showed that the incidence of BML in the patients with KOA was related to age, body mass index(BMI), course of disease, smoking frequency and drinking frequency(P<0.05).According to Logistic regression analysis, the main influence factors of BML in the patients with KOA were age≥60 years old, BMI≥24 kg/m2, course of disease ≥5 years, smoking frequency≥10 pieces/d and drinking frequency≥4 times/week(P<0.05). Conclusion:KOA patients have higher detection rate of BML, and there are many factors affecting the incidence of BML. It should be investigated from the aspects of age, BMI, course of disease, smoking frequency and drinking frequency, which is helpful for the evaluation of patients’ progress and subsequent diagnosis and treatment. [ABSTRACT FROM AUTHOR]