http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Peng-Hui Mao (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
Yifei Mao,Zhongtang Xiong,Songxin Wu,Zhiqing Huang,Ruoxian Zhang,Yuqin He,Yuling Peng,Yang Ye,Tianfa Dong,Hui Mai 한국유방암학회 2022 Journal of breast cancer Vol.25 No.2
Purpose: Knowing the distinction between benign and borderline/malignant phyllodes tumors (PTs) can help in the surgical treatment course. Herein, we investigated the value of magnetic resonance imaging-based texture analysis (MRI-TA) in differentiating between benign and borderline/malignant PTs. Methods: Forty-three women with 44 histologically proven PTs underwent breast MRI before surgery and were classified into benign (n = 26) and borderline/malignant groups (n = 18 [15 borderline, 3 malignant]). Clinical and routine MRI parameters (CRMP) and MRI-TA were used to distinguish benign from borderline/malignant PT. In total, 298 texture parameters were extracted from fat-suppression (FS) T2-weighted, FS unenhanced T1-weighted, and FS first-enhanced T1-weighted sequences. To evaluate the diagnostic performance, receiver operating characteristic curve analysis was performed for the K-nearest neighbor classifier trained with significantly different parameters of CRMP, MRI sequence-based TA, and the combination strategy. Results: Compared with benign PTs, borderline/malignant ones presented a higher local recurrence (p = 0.045); larger size (p < 0.001); different time-intensity curve pattern (p = 0.010); and higher frequency of strong lobulation (p = 0.024), septation enhancement (p = 0.048), cystic component (p = 0.023), and irregular cystic wall (p = 0.045). TA of FS T2- weighted images (0.86) showed a significantly higher area under the curve (AUC) than that of FS unenhanced T1-weighted (0.65, p = 0.010) or first-enhanced phase (0.72, p = 0.049) images. The texture parameters of FS T2-weighted sequences tended to have a higher AUC than CRMP (0.79, p = 0.404). Additionally, the combination strategy exhibited a similar AUC (0.89, p = 0.622) in comparison with the texture parameters of FS T2-weighted sequences. Conclusion: MRI-TA demonstrated good predictive performance for breast PT pathological grading and could provide surgical planning guidance. Clinical data and routine MRI features were also valuable for grading PTs.
-
Zhi-jie Liang,Jiayu Peng,Jiale Liang,Yujing Song,Weini Jia,Qing-hui Mao 한국섬유공학회 2022 Fibers and polymers Vol.23 No.12
The outstanding redox chemistry of polyoxovanadate has shown excellent catalysis prospects. In the present work,the effect of polyoxovanadate (K7[MnV13O38]·18H2O) on the catalytic polymerization of catechol was investigated for thefirst time. The synthesized polymer was applied in-situ for the dyeing of cotton under mild conditions. Various processparameters, including the dosages of catechol and polyoxovanadate and incubation temperature, which influence the colordepth, were analyzed. The effect of different time intervals on polyoxovanadate-catalyzed polymerization of catechol wasexamined using UV-vis spectroscopy. The color intensity of cotton was evaluated by means of K/S value and color difference(ΔE*). The results show that the dyeing depth of the dyed cotton fabrics gradually increased with the extension of time andthe increase in the concentration of polyoxovanadate. This work represents a novel synthetic process exploring the potentialof a polymer to be used for textile dyeing.
-
Chen Nan,Tan Jia-Yu,Wang Ying,Qi Ming-Hui,Peng Jiang-Nan,Chen De-Xin,Liu Su,Li Mao-Ye 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.4
Heat shock proteins (HSPs) are encoded by Hsp genes and are important in insect tolerance to heat stress. The green peach aphid, Myzus persicae, is an important agricultural pest. The functions of Hsp genes in the thermal tolerance of M. persicae are unknown. This study identified an Hsp70 gene (MpHsp70a) and analyzed its role in protection against high-temperature stress. MpHsp70a encoded a protein consisting of 659 amino acid residues. The protein had three signature motifs of the HSP70 family and was predicted to be localized in the cytoplasm. The highest expression level of MpHsp70a was in adults, and differences in the mRNA levels between apterous and alate adults were not significant. Exposure to high temperatures (30, 35 and 40 ◦ C) for one hour and treatment with 40 ◦ C for different times (0.5, 1 and 2 h) all resulted in a greatly elevated expression level of MpHsp70a, suggesting that the gene is heat-inducible. The transcriptional level of MpHsp70a was suppressed by injection with double-stranded RNA (dsRNA), and knockdown of MpHsp70a significantly increased the suscep tibility of apterous adults to 40 ◦ C. These results indicate that MpHsp70a is required for tolerance to hightemperature stress in M. persicae. Our findings highlight the molecular mechanism underlying Hsp70-mediated thermal adaptation in M. persicae.
-
Propagation Properties of a Gaussian Beam from a High-NA Optical System in a Magneto-Optical Disk
Li-Chen Jia,Yu-Xiang Zheng,Liang-Yao Chen,Peng-Hui Mao,Rong-Jun Zhang 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.51 No.II
We have calculated the propagation properties of a Gaussian beam from a high-numerical-aperture (NA) optical system in a magneto-optical (MO) disk by combining an angular spectra analysis and optical matrix method. We obtained the optical and magneto-optical responses, the electric and magnetic field distributions, and the Joule loss profiles for the MO disk on which a Gaussian beam from different NA system was incident and compared the propagation properties of the Gaussian beam with those of a plane wave. The results show that the propagation properties of a Gaussian beam from an optical system with a high NA differ obviously from those of a plane wave, but a Gaussian beam with a larger spot diameter ({\it e.g.}, greater than 100 $\mu$m) can be regarded as a plane wave for the considered disk structure.
-
Study of the Optical Properties of Bi3:15Nd0:85Ti3O12 Ferroelectric Thin Films
Rong-Jun Zhang,Yi-Ming Chen,Yu-Xiang Zheng,Peng-Hui Mao,Wei-Jie Lu,Liang-Yao Chen 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.4
The optical properties of Bi3:15Nd0:85Ti3O12 (BNdT) feroelectric thin films were studied. The BNdT thin lms were deposited on Pt/Ti/SiO2/Si substrates by using a sol-gel technique. The elipsometric spectra of the BNdT thin film were measured and investigated in the photon energy range of 1.5 - 4.5 eV. The elipsometric spectral data were fited by using the four-phase layer structure model and the Forouhi-Bloomer (FB) model, which was used to describe the optical dispersion relation of the sample. The optical constants of the sample were obtained by using a data analysis based on Tauc's principle and showed that the direct band gap of the BNdT sample existed at 3.89 eV.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
