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BACKGROUND: As a bioactive substance, Biodentine has good compressive strength, bonding strength and less micro-leakage. It has been successfully applied to a variety of clinical indications. However, much less is known about whether Biodentine can promote osteogenesis. OBJECTIVE: To explore the effects of Biodentine of different concentrations on proliferation and osteogenesis of MG-63 cells. METHODS: The extracts of Biodentine with different concentration gradients (1, 1/2, 1/4, 1/8, 1/16) were prepared. MG-63 cells were cultured in six groups, with the addition of minimum essential medium (control group) and five concentrations of Biodentine extracts. Cell proliferation was detected by cell counting kit-8 assay at 1, 3, 5 and 7 days, and then the best concentration of Biodentine extract was screened. Another MG-63 cells were cultured in minimum essential medium (blank control group) and Biodentine extract of the optimal concentration (experimental group). The expression of osteogenic factor Runx2 mRNA in MG-63 cells was detected by real-time PCR at 1, 3, 5 and 7 days of culture. Then alizarin red staining was used to observe calcified nodules in MG-63 cells at 10 and 14 days of culture. RESULTS AND CONCLUSION: (1) At 1 and 3 days of culture, the number of viable cells in different concentration groups was similar to that in the control group (P > 0.05). At 5 days of culture, compared with the control group, the number of viable cells in MG-63 cells was significantly lowered in the 1 concentration group, showed no significant changes in the 1/2, 1/4, 1/8 concentration groups (P > 0.05), and was significantly increased in the 1/16 concentration group (P < 0.05). Therefore, the 1/16 concentration of Biodentine extract was used for further experiment. (2) Runx2 mRNA expression of the experimental group at 1, 3, 5 and 7 days of culture was 1.14, 5.29, 1.08 and 2.11 times that of the control group, respectively (all P < 0.05). (3) At 10 days of culture, both the experimental group and blank control group showed no mineralized nodules; at 14 days of culture, mineralized nodules were observed in the two groups, and larger and darker nodules were seen in the experiment group. To conclude, Biodentine at certain concentrations can promote the proliferation and osteogenic activity of human osteosarcoma cell line MG-63. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Contemporary Neurology & Neurosurgery is the property of Chinese Journal of Contemporary Neurology & Neurosurgery 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 Chinese Journal of Oncology is the property of Chinese Journal of Oncology / Zhonghua Zhongliu Zazhi 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.)

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Copyright of Chinese Journal of Bioinformatics is the property of Bioinformatics 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 Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)

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Copyright of Tianjin Medical Journal is the property of Tianjin Medical Journal 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 Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board 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.)

肝纤维化是各种慢性致病因素作用于肝脏，引起组织损伤修复的病理反应，是多种肝脏疾病发展至肝硬 化的必经阶段。小干扰RNA(siRNA)能够高效、特异地破坏mRNA的完整性，抑制疾病相关基因的表达，在基因治 疗领域有广阔应用前景。目前研究表明，siRNA能有效地从基因水平进行调控，抑制肝星状细胞的活化与增殖，增 加细胞外基质的降解，可成为肝纤维化治疗的有效手段。 [ABSTRACT FROM AUTHOR]

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To enhance network reliability,network redundancy and load balance should be considered in multi-outlet campus network boundary.Based on GNS3,taking a common campus network as an example,we introduce the specific plan to improve reliability in multi-outlet network boundary with combination of SLA and VRRP.In the experiment,network fault is simulated,and network fault switching,as well as optimization of load balance,are analyzed. [ABSTRACT FROM AUTHOR]

Copyright of Wuhan University Journal. Humanity Sciences / Wuhan Daxue Xuebao. Renwen Kexue Ban is the property of Wuhan University 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 Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health 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.)

In order to solve the problems of present car alarms, such as inconvenient to use, easy to produce false alarms and high cost, fingerprint recognition technology, the keyboard scanning and LCD displaying circuits, the acoustooptic alarm circuit, the bus interface circuit, the control circuit about opening the door, starting the car and alarming and other parts were studied. The requirements of automobile anti-­theft function were summarized. One kind of automobile anti-theft control system based on microcontroller STM32 ARM Cortex-M3 as its ker­nel and fingerprint recognition technology was given. The design of hardware circuit and software programming were completed. The test was finished that the system control the door to open, the car to start and the alertor to alarm by matching the fingerprint information . The func­tional test of the system shows that, the system functions of fingerprint start, sound-light alarm, password emergency start, fingerprint man­agement , mode setting and so on are realized. The system has the advantages of stable performance, lower cost, as well as stronger practica­bility, and the great actual application value of the module can stand up in the future practice. [ABSTRACT FROM AUTHOR]

Copyright of Society: Chinese Journal of Sociology / Shehui is the property of Society: Chinese Journal of Sociology 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 Electric Machines & Control / Dianji Yu Kongzhi Xuebao is the property of Electric Machines & Control 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 Journal of Xi'an Jiaotong University (Medical Sciences) is the property of Xian Jiaotong University 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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 Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)

目的：探讨妊娠期糖尿病（GDM）患者胎盘组织胰岛素受体底物1（IRS－1）、蛋白酪氨酸磷酸酶1B（PTP 1B）表达及意义。方法选择GDM孕妇49例（GDM组），正常足月妊娠孕妇50例（正常组）。两组均于孕24～28周检测空腹胰岛素（FINS）、空腹血糖（FPG），采用胰岛素稳态模型评估法（HOMA）计算胰岛素抵抗指数（HOMA－IR）、胰岛β细胞功能（HOMA－β％）、胰岛素敏感指数（HOMA－ISI）；两组分娩后取胎盘组织，采用免疫组化ABC法检测胎盘组织IRS－1、PTP 1B。结果 GDM组FPG、FINS、HOMA－IR均高于正常组（P均＜0．01），HOMA－ISI、HO－MA－β％均低于正常组（P均＜0．01）。正常组胎盘组织IRS－1阳性表达率为100％，GDM组为63．26％，两组比较P＜0．01。正常组胎盘组织PTP 1B阳性表达率为56．00％，GDM组为91．83％，两组比较P＜0．01。 GDM患者胎盘组织PTP 1B与IRS－1表达呈负相关（r＝－4．85，P＜0．01）；IRS－1与HOMA－IR呈负相关（r＝－0．552，P＜0．01），与HOMA－β％和HOMA－ISI无相关性（P＞均0．05）；PTP 1B与HOMA－IR呈正相关（r＝0．563，P＜0．01），与HOMA－β％和HOMA－ISI无相关性（P＞均0．05）。结论 GDM患者胎盘组织IRS－1表达降低，PTP 1B表达升高，且均与HOMA－IR相关；胰岛素信号传导系统中信号蛋白表达异常可能与GDM发病有关。 [ABSTRACT FROM AUTHOR]

Guide stars are the basis of celestial positioning. The performance of celestial positioning is not only determined by the accuracy of astronomical sensors, but also affected by the distribution of guide stars. To analyze the impact of star distribution on celestial positioning, an error model of celestial positioning is established based on the basic principle of celestial positioning. The error characteristics under the different distributions of stars are researched. In addition, the error weight k used for determining the performance of celestial positioning is presented, and the optimum star geometries are given with certain measuring accuracy. Simulation results show that the proposed error model of celestial positioning can be used to analyze the performance of celestial positioning effectively. [ABSTRACT FROM AUTHOR]

Each state of integrated navigation system is strongly nonlinear and coupled with each other under missile-borne high-dynamic environment. Since the traditional extended Kalman filter algorithm ignors the interaction of higher order terms, its linear expansion may teads to its inaccuracy and the decrease in navigation precision. UKF algorithm can effectively avoid bringing a linearization error, but the real-time of the algorithm can be affected by the complex filtering calculation for a large number of particles in high-dimensional integrated navigation system. A simplified unscented Kalman filter(SUKF) algorithm isproposed for the requirement of high real-time and accuracy for the missile-borne integrated navigation system in launch inertial coordinate system. SUKF can be used to directly estimates the state parameters of the navigation system to achieve the real-time and improve the navigation precision without linearization extension in traditional EKF. The simulation results show that SUKF effectively improves the real-time and filtering precision of algorithm, so SUKF is very suitable for the actual engineering system. [ABSTRACT FROM AUTHOR]