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Copyright of Acta Sedimentologica Sinica is the property of Acta Sedimentologica Sinica 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.)

Copyright of Journal of Cryptologic Research (2095-7025) is the property of Editorial Board of Journal of Cryptologic Research 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 Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology 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 Osteoporosis is the property of Chinese Journal of Osteoporosis 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 assess the impact of nicorandil treatment on coronary microvascular dysfunction （CMD） values in patients with obstructive coronary artery disease （CAD） . Methods CAD patients （≥50% stenosis，fraction flow reserve （FFR） ≤0.8） with CMD， who were diagnosed by invasive adenosine stress coronary reactivity testing （CRT），and whose index of microcirculatory resistance （IMR） was measured using the intracoronary pressure/temperature sensor-tipped guide after successful CRT but did not receive PCI，were selected in this study. The patients were randomly assigned to the nicorandil treatment group （5 mg，three times a day，n = 12） and sosorbide Dinitrate reatment group （5 mg， three times a day， n = 9） groups. After 180 days， the adenosine stress IMR was measured again， and adenosine stress cardiac magnetic resonance （CMR） first-pass perfusion imaging was completed to determine myocardial perfusion reserve index （MPRI） between the nicorandil group and control group. The differences of IMP and MPRI in the two groups were compared. Results The nicorandil group had lower IMR values （ < 0.01）， and lower mean adenosine stress MPRI values （ < 0.01） compared with the control group on coronary microvascular dysfunction （CMD） in patients with obstructive coronary artery disease. Conclusions Nicorandil was associated with reduced coronary microvascular dysfunction in patients with obstructive coronary heart disease. [ABSTRACT FROM AUTHOR]

Objective - To investigate the correlation between methylation and the activity of transcriptional regulator PhoP in Salmonella enterica serovar Typhimurium (S. Typhimurium), and screen for the methyltransferase of PhoP. Methods * The methylation level of PhoP in S. Typhimurium under different culture conditions was determined by Western blotting. The transcription levels of phoP and the genes regulated by phoP were examined to screen for tiie metiiyltransferase of PhoP after overexpressing methyltransferase candidates predicted by Hoinfonnatics< And then methyltransferase assay was verified/«The transcription levels of phoP audits methyltransferase were determined by real-time PCRin high concentration of Mg2+ or weak acid conditions. Results As the concentration of Mgincreased in die medium, the methylation level of PhoP increased, audits methylation level decreased after phimurium was stimulated by weak acid. In the screening of 9 methyltransferases predicted by bioinfbnnatlcs overexpressicm of STM14_0023 reduced the transcription level of phoP and its downstream genes and the protein level of PhoP v/w, but knockout of STM140023 had no effect on the expression ofphoP and its downstream genes, STM14_0023 was capable of methylating PhoP in yntro and could also increase the methylation level of PhoP after overexpression of STM14 0023 in vivo. Under the condition of high concentratioii ofMg when the expression of phoP was inhibited, the transcriptional level of STM14一0023 was reduced. Conclusiona STM14--0023 is the methyltransferase of PhoP, and methylation inhibits PhoP activity. [ABSTRACT FROM AUTHOR]

China's national parks aim to promote conservation and improve public welfare. This research took tourists as one of the key ecosystem services beneficiaries. It used an ecosystem services approach to identify social perceptions and willingness to pay regarding different ecosystem services in the Wusyishan National Park Pilot, in order to find ways to optimise tourism to promote conservation and to improve public welfare in the establishment of the national park system. A social survey was conducted using questionaires focusing on the assessment of the importance of ecosystem services and the willingness to pay, and the data were analysed using weighted scoring, multiple correspondence analysis and optimal scaling regression. Results showed that most respondents recognised the importance of various cultural services, including eco- tourism which is high in practicality, activities to have cultural experience which is rather abstract and enjoying the beautiful scenery; however, there were trade-offs among specific ecosystem services. Tourists thought highly of maintaining air quality and it was the only regulating service that ranked the top five. In addition, they did not choose any provisioning services among the top five important ecosystem services. Under the entry tickets fee waiver hypothesis, more than 90% respondents were willing to pay for maintainance of the ecosystem services, but the average payment of 165.9 yuan/person was less than current ticket price. Willingness to pay was significantly affected by education level and career; together with the impact of age and personal income, clustered groups with certain willingness to pay were identified. These findings indicate that in the development of tourism in national parks, managers should focus on securing typical cultural ecosystem services regarding tradeoffs in demand from different tourist groups. They also should improve the public's awareness of the chracteristics of ecosystems to facilitate their active participation in conservation. q [ABSTRACT FROM AUTHOR]

Objective: To investigate the diagnostic value of multi-slice spiral computed tomography (MSCT) combined with magnetic resonance imaging (MRI) for early central lung cancer and postoperative recurrence. Methods: 98 patients with early central lung cancer who were treated in our hospital from August 2015 to February 2017 were selected.All patients were examined by MSCT and MRI. The diagnostic results of separate MSCT and MSCT combined with MRI were analyzed and compared.Follow up for 1 year, the diagnosis results of separate MSCT and MSCT combined with MRI in patient with a suspected relapse were observed and compared, and the sensitivity and specificity to the diagnosis of recurrence between them were compared. Results: The accuracy rate, misdiagnosis rate and missed diagnosis rate of MSCT combined with MRI were 94.90%, 1.02% and 4.08% respectively, compared with 82.65%, 9.18% and 8.16%of separate MSCT, the accuracy rate of MSCT combined with MRI diagnosis was increased significantly, and the misdiagnosis rate was decreased significantly (P<0.05), there was no significant difference in missed diagnosis rate between the two diagnostic methods (P>0.05). Follow up for 1 year, 98 patients were reexamined 122 times, and 49 cases recurred. The sensitivity and specificity of MSCT combined with MRI in diagnosis of postoperative recurrence were 97.96% and 93.15%, which were significantly higher than 83.67%and 82.19%of separate MSCT (P<0.05). Conclusion: MSCT combined with MRI has high accuracy rate in the diagnosis of early central lung cancer, and it can improve sensitivity and specificity in diagnosis of postoperative recurrence. [ABSTRACT FROM AUTHOR]