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Artificial light‐harvesting systems have attracted great interest in biological photosynthesis and photo‐voltaic devices areas due to their unique structures, easy purification, low‐cost, and convenient processing abilities. Here, two dendritic molecules based on triphenylamine and naphthalimide have been designed and synthesized, their structures were confirmed by 1H NMR, ESI‐MS, and high resolution mass spectrometry. In these molecules, triphenylamine units perform as the electron donor moiety, and naphthalimide units perform as the electron acceptor. The obvious quenched fluorescence intensity and considerably shortened lifetime of the dendritic molecules combined with the molecular frontier orbital energy levels proved that the dendritic molecules not only are good candidates as hole‐transporting materials but also are two excellent photo‐induced electron transfer materials. Therefore, it is believed that these dendritic molecules have potential application value in photo‐voltaic devices. [ABSTRACT FROM AUTHOR]

In many colour-related fields, such as textile colour measurement systems based on computer vision as well as dyestuff synthesis, colour constancy with illumination variation is a key problem to be solved. A new algorithm of illumination compensation for colour constancy for textured textiles is proposed in this paper, combining an improved least-squares support vector regression ( LSSVR) and an improved GM(1,1) model of grey theory. The LSSVR algorithm was improved by determining the error limitation according to the distance between a standard sample and a test sample, while the improved GM(1,1) model used the average value of the sequence [ABSTRACT FROM AUTHOR]

Hierarchical, ultrathin, and porous NiMoO 4 @CoMoO 4 on Co 3 O 4 hollow bones were successfully designed and synthesized by a hydrothermal route from the Co-precursor, followed by a KOH (potassium hydroxide) activation process. The hydrothermally synthesized Co 3 O 4 nanowires act as the scaffold for anchoring the NiMoO 4 @CoMoO 4 units but also show more compatibility with NiMoO 4 , leading to high conductivity in the heterojunction. The intriguing morphological features endow the hierarchical Co 3 O 4 @NiMoO 4 @CoMoO 4 better electrochemical performance where the capacity of the Co 3 O 4 @NiMoO 4 @CoMoO 4 heterojunction being 272 mA·h·g -1 at 1 A·g -1 can be achieved with a superior retention of 84.5% over 1000 cycles. The enhanced utilization of single/few NiMoO 4 @CoMoO 4 shell layers on the Co 3 O 4 core make it easy to accept extra electrons, enhancing the adsorption of OH - at the shell surface, which contribute to the high capacity. In our work, an asymmetric supercapacitor utilizing the optimized Co 3 O 4 @NiMoO 4 @CoMoO 4 activated carbon (AC) as electrode materials was assembled, namely, Co 3 O 4 @NiMoO 4 @CoMoO 4 //AC device, yielding a maximum high energy density of 53.9 W·h·kg -1 at 1000 W·kg -1 . It can retain 25.92 W·h·kg -1 even at 8100 W·kg -1 , revealing its potential and viability for applications. The good power densities are ascribed to the porous feature from the robust architecture with recreated abundant mesopores on the composite, which assure improved conductivity and enhanced diffusion of OH - and also the electron transport. The work demonstrated here holds great promise for synthesizing other heterojunction materials M 3 O 4 @MMoO 4 @MMoO 4 (M = Fe, Ni, Sn, etc).

Background: The Bosniak classification system based on contrast-enhanced computed tomography (CECT) is commonly used for the differential diagnosis of cystic renal masses. Contrastenhanced ultrasound (CEUS) is a relatively novel technique, which has gradually played an important role in the diagnosis of cystic renal cell carcinoma (CRCC) due to its safety and lowest price., Objective: The aim of the study is to investigate the application value of CEUS and Bosniak classification into the diagnosis of cystic renal masses., Methods: 32 cystic masses from January 2018 to December 2019 were selected. The images of conventional ultrasound (US), CEUS and CECT from subjects confirmed by surgical pathology were retrospectively analyzed. The Bosniak classification system of cystic renal masses was implemented using CEUS and CECT, and the diagnostic ability was compared., Results: For the 32 cystic masses, postoperative pathology confirmed 11 cases of multilocular CRCC, 15 cases of clear cell carcinoma with hemorrhage, necrosis and cystic degeneration, 5 cases of renal cysts, and 1 case of renal tuberculosis. The Bosniak classification based on CEUS was higher than that based on CECT, and the difference was statistically significant (P = .024). The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of CEUS were comparable to CECT. There was no significant difference observed in the diagnosis of CRCC (P >.05)., Conclusion: CEUS combined with Bosniak classification greatly improves the diagnosis of CRCC. CEUS shows a comparable diagnostic ability to CECT. In daily clinical routine, patients who require multiple examinations and present contraindications for CECT can particularly benefit from CEUS., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)

Artificial light-harvesting systems have attracted great interest in biological photosynthesis and photo-voltaic devices areas due to their unique structures, easy purification, low-cost, and convenient processing abilities. Here, two dendritic molecules based on triphenylamine and naphthalimide have been designed and synthesized, their structures were confirmed by 1 H NMR, ESI-MS, and high resolution mass spectrometry. In these molecules, triphenylamine units perform as the electron donor moiety, and naphthalimide units perform as the electron acceptor. The obvious quenched fluorescence intensity and considerably shortened lifetime of the dendritic molecules combined with the molecular frontier orbital energy levels proved that the dendritic molecules not only are good candidates as hole-transporting materials but also are two excellent photo-induced electron transfer materials. Therefore, it is believed that these dendritic molecules have potential application value in photo-voltaic devices., (© 2020 John Wiley & Sons, Ltd.)

Aim: To investigate the dynamic changes of MMP-9 and TIMP-1 levels in gingival crevicular fluid during orthodontic tooth movement under orthodontic forces., Methods: select 20 cases which fit experiment condition. The cases divided randomly into 2 groups, 1- cases for each group. The distal forces of 100g and 250 g were exerted to the canine on the one side of two groups separately. The GCF were taken before activation and at 1, 2, 3, 4, 5, 6, 7 week respectively after initiation of the experiment. The levels of MMP-9 and TIMP-1 in GCF were determined by ELISA., Results: The levels of MMP-9 in A group began to increase at 1 week and reached to its peak value at 3 week after initiation of the experiment, but the level returned to baseline at 7 week. The levels of TIMP-1 in A group began to increase at 1, 2, 3 week and decreased at 4 week after initiation of the experiment, but the level at 6,7 week was higher than that before initiation of the experiment. The level of MMP-9 in A group was higher than that in B group at all times and the level of TIMP-1 in A group was lower than that in B group., Conclusion: The level of MMP-9 and TIMP-1 in GCF may play an importance role in maintaining the health, the regular remodeling of the periodontium and the fast-moving of orthodontic tooth.

Objective: To examine the role of Epstein-Barr virus (EBV) infection in benign lymphoepithelial lesions with malignant transformation of salivary glands., Methods: 2 cases benign lymphoepithelial lesions with focal malignant transformation (BLEL-FMT), 14 cases of malignant lymphoepithelial lesion (MLEL) and 4 cases of benign lymphoepithelial lesion (BLEL) of salivary glands, 4 cases of nonspecific chronic sialadenitis were examined. Sections were cut from the paraffin blocks and performed in situ hybridization (ISH) for EBV encoded small RNA-1 (EBER-1) using 30-base synthesized oligonucleotide probe and polymerase chain reaction (PCR) for BamHI-W regein of EBV DNA (123 bp)., Results: In ISH, strong signals for EBER-1 were obtained in most of epithelial cell nuclei in examined specimens of BLEL-FMT, no matter in benign or malignant areas and in all specimens of MLEL (14/14), PCR demonstrated a DNA fragment of 123 kbp in 2 cases of BLEL-FMT and 12 cases of MLEL (12/14). In contrast, there were no significant ISH/PCR signals in examined BLEL and nonspecific chronic sialadenitis., Conclusions: A few cases of MLEL may arise from BLEL and EBV may plays an important role in the pathogenesis of BLEL-FMT of salivary glands.

Objective: To determine the prevalence of Epstein-Barr virus (EBV) infection in lymphoepithelial carcinoma (LEC) of salivary glands in Sichuan Chinese and discuss the role of EBV infection in pathogenesis of LEC., Methods: Paraffin sections of 16 cases of LEC and 4 cases of benign lymphoepithelial lesion (BLEL) of salivary glands, 4 cases of non-specific chronic sialadenitis were examined by in situ hybridization for EBV encoded small RNA-1 (EBER-1) using 30-base synthesized oligonucleotide probe., Results: Strong signals for EBER-1 were obtained in most of tumor cell nuclei in all the specimens of LEC (16/16); in contrast, there were no significant signals observed in the examination of 4 cases of BLEL and 4 cases of non-specific chronic sialadenitis., Conclusion: The results indicate that EBV plays an important role in the pathogenesis of LEC of salivary glands in Sichuan Chinese.