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In recent years, breast cancer incidence has increased year by year, which makes research on treatment methods critical. Intervention surgery is a new development in breast cancer treatment. However, the operation is complicated and lasts for a long time. The doctor’s operation can no longer meet clinical needs. The breast intervention robot has the characteristics of minimal invasiveness, operability, and high flexibility so that it can compensate for the shortcomings of traditional interventional surgery. The combination of the robotic system and medical imaging technology is an important means to determine the lesion location and plan the puncture path. This article mainly reviews the breast intervention robot under image navigation. Based on existing literature, image navigation methods are divided into MRI, ultrasound, and CT for the introduction. First, we summarized the principles and technologies associated with materials, sensors, and actuators used in the MRI-guided breast intervention robot. In particular, the actuation is analyzed and compared in detail. Subsequently, the ultrasound-guided and CT-guided breast intervention robots are introduced. After that, we discuss the image-guided positioning technology. Finally, we summarize the research progress and trends in the future development of breast intervention robots under image navigation.

Natural minerals in soil can inhibit the growth of bacteria that protect organic carbon from decay. However, the mechanism inhibiting the bacterial growth remains poorly understood. Here, using a series of cultivation experiments and biological, chemical and synchrotron-based spectral analyses, we showed that kaolinite, hematite, goethite and ferrihydrite had a significant inhibitory effect on the growth of the model bacteria Pseudomonas brassicacearum J12, which was more prominent with a concentration of 25 mg mL−1 than it was with either 10 or 5 mg mL−1. In contrast, montmorillonite promoted the growth of J12. Compared to Al-containing minerals, Fe(III)-containing minerals produced more hydroxyl radical (HO⚫) that has high efficiency for the inhibition of J12. Moreover, a significant positive correlation between HO⚫ radical and Fe(II) was found, suggesting that Fe(II) contributes to the generation of HO⚫. Furthermore, both micro X-ray fluorescence and X-ray photoelectron spectroscopies indicated that surface Fe(III) was reduced to Fe(II), which can produce HO⚫ through the well-known Fenton reaction series. Together, these findings indicate that the reduced surface Fe(II) derived from Fe(III)-containing minerals inhibits the growth of Pseudomonas brassicacearum J12 via a free-radical mechanism, which may serve as a ubiquitous mechanism between iron minerals and all of the heterotrophic bacteria in view of taxonomically and ecologically diverse heterotrophic bacteria from terrestrial environments as a vast source of superoxide.

Additional file 1: Table S1. Primers used for mec gene detection and SCCmec Typing. Table S2. The ccr gene sequences obtained from GenBank for phylogenetic analyses. Table S3. The ccr gene sequences obtained in this study for phylogenetic analyses. Table S4. Origins of the CoNS strains whose ccr segments were applied to phylogenetic analyses.

The single-chip microcomputer course is a strong theoretical and practical course. By the analysis on the current problems existing in the single-chip microcomputer teaching process, the current teaching methods are unfavorable to the cultivation of learner's personality and innovative talents. Flipped classroom can transform the students' passive learning to active learning, so it is completely necessary and urgent that flipped classroom method apply and practice in the teaching process of single-chip microcomputer course. Based on the analysis of current teaching model in flipped classroom, flipped classroom teaching model of single-chip microcomputer course based on micro-lesson is constructed. According the difficulty of the task, multi-level task is developed. Some achievements are obtained. Application of flipped classroom teaching model in the single-chip microcomputer course plays a key role for improving engineering students' practical operation and technical innovation ability.

This study aims to investigate the impact of psammoma body (PB) on papillary thyroid carcinoma (PTC), and evaluate the association among PB, Hashimoto thyroiditis (HT), and other clinicopathologic characteristics in PTC patients. We conducted a retrospective case-control study involving 1052 PTC patients who underwent total thyroidectomy or lobectomy with lymph node dissection. Psammoma body was observed in 324 out of 1052 PTC (30.8%) patients. Ultrasonographic (US) calcification (P

Objective: Our aim was to determine whether triple-negative breast cancer (TNBC) has distinguishing sonographic features compared to non-TNBC. Methods: Data from 145 consecutive breast cancer patients were collected. The images were reevaluated by two dedicated breast imaging experts according to the Breast Imaging Reporting and Data System. The sonographic features of 45 TNBC patients were compared with those of 100 non-TNBC patients. Results: TNBC showed a high histological tumor grade. On ultrasound, TNBC was more frequently to present as oval or round mass shape (48.9%, 17.8%; respectively), more likely to have circumscribed margins (82.2%), and less likely to show posterior attenuating (8.9%). Additionally, compared with non-TNBC, TNBC was less likely to have calcification (35.6%). Conclusion: TNBC has distinguishing imaging features on breast ultrasound, and more likely to be associated with benign masses. Knowledge of the distinct sonographic features would be useful in diagnosing TNBC.

The fabrication of a-C:H films from methane has been performed using dielectric-barrier discharges at atmospheric pressure. The effect of combined-feed gas, such as carbon dioxide, carbon monoxide or acetylene on the formation of a-C:H films has been investigated. It has been demonstrated that the addition of carbon monoxide or acetylene into methane leads to a remarkable improvement in the fabrication of a-C:H films. The characterization of carbon film obtained has been conducted using FT-IR, Raman and SEM.

Under conditions of electric-arc low-temperature plasma (LTP), ultra-finely dispersed Si3N4 particles have been synthesized by using silicon powder and nitrogen as raw materials. The prepared samples are characterized by x-ray diffraction (XRD), scanning electron spectroscopy (SEM), transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS). The result indicates that the basic phase in Si3N4 produced is α- and β-Si3N4. The particle size of Si3N4 sample is in the range of 30-500 nm.

Cerium phosphate powders were synthesized by direct solid liquid reaction of cerium dioxide and phosphate acid at the Ce: P ratio of 1∶1. Phase-pure and fine grain size CePO4 powers could be obtained by calcining the as received powders at the temperature higher than 600°C. It is demonstrated that the grain size and morphology of the CePO4 powders were calcined at various temperatures. An interesting layered crystal structure and a series of microcracks that cross and occur along the extrusion stress direction on the extruded surface inside CePO4 were observed. The ductility and machinability of CePO4 ceramic are attributed to the layered structure. Continuous machining debris was observed on the turned surface.

Along with the country to vigorously promote quality education and the society for undergraduates' innovation ability requirements, how to cultivate undergraduates' innovation consciousness and practice ability has become the focus of attention in higher colleges. In this paper based on the analysis of our undergraduates' innovation ability on the basis of the status of undergraduates' innovation ability, the robot as a teaching platform for the introduction of the cultivation of innovation ability of undergraduates, analysis the significance of the robot as a teaching platform of training undergraduates' innovation ability, establish the robot teaching platform matching system, from five areas of scientific and technological innovation activity, construction of the training room, the application of scientific research, teaching , and service to the community described the robot as a teaching platform for undergraduates' innovation education and training mode. Robot technology because of its high content of science and technology, innovation and strong features, and to cultivate college students' innovative ability in an efficient way, therefore, the use of robots as a teaching platform for undergraduates' education training mode study in the improvement of university students' innovation ability has important research significance and application value.

Aiming to the community demand for Creative talents, and on the basis of elaborating the TRIZ basic theoretical system, then to analysis the current Chinese College Students' creative abilities. Introducing the TRIZ theoretical into the model of the cultivation of undergraduates' innovation ability, and have structured the model of the cultivation of undergraduates' innovation ability. This model is basis on the TRIZ theoretical, and consists of teachers' questioning pattern, students' autonomous study pattern, innovation and practice pattern, comprehensive training pattern and project participation pattern. To implement the innovation theory and innovative teaching methods which based on the TRIZ theoretical, guiding the undergraduates participate in innovation, practice innovation and to train creative talent of grasping the innovative method, innovation spirit and innovation ability.

The government of the Song Dynasty paid high attention to develop the science of acupuncture and moxibustion, improved the position of acupuncture and moxibustion, specially made collation and systematization on ancient books of acupuncture and moxibustion, compiled monograph of acupuncture and moxibustion, set up acupuncture and moxibustion program and founded acupuncture bronze statue, launched experiment teaching and so on, which made acupuncture and moxibustion spread and be populated, accelerating the development and advancement of acupuncture and moxibustion sciences.