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Search Results: 1 - 10 of 28681 matches for " Jinlong Sun "
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An Empirical Study on the Relationship between Female Executives and Corporate Philanthropy—From the Enterprise Life Cycle Perspective  [PDF]
Jinlong Xie
Modern Economy (ME) , 2018, DOI: 10.4236/me.2018.91009
Abstract: This paper studies the influence of female executives on corporate charitable giving from the perspective of enterprise life cycle from 2011-2015. The research shows that: 1) Enterprises are in different life cycles, and the level of corporate charitable giving is significantly different. 2) The proportion of female executives in mature enterprises is positively correlated with the level of corporate charitable giving. 3) If the CEO or chairman of a mature enterprise is a woman, it will significantly improve the level of charitable donation of the enterprise. This paper not only promotes the research of enterprise charity donation motivation from the new perspective, but also has important practical significance for how to better fulfill the social responsibility and promote the common development of society.
Emerged fossil corals on the coast of northwestern Hainan Island, China: Implications for mid-Holocene sea level Change and tectonic uplift
YanTao Yao,WenHuan Zhan,JinLong Sun,Jie Sun
Chinese Science Bulletin , 2013, DOI: 10.1007/s11434-013-5692-7
Abstract: Fossil corals are widespread on the coast of northwestern Hainan Island, China. Most of these corals are exposed during low tide levels, indicating that a higher sea level may have existed during their life time. The radiocarbon data introduced by this paper in combination with those from other sources show that the corals were alive mainly during the mid- to late-Holocene. Mid-Holocene sea levels 1–3 m higher than the present level were confirmed for adjacent coasts; however, the emerged corals on the investigated coast are not necessarily indicators of a higher eustatic sea level. They do predict relative sea levels of 1.5–3.4 m when using 1 m below the tidal datum as the upper limit of coral growth. However, using the Mean Lower Low Water as the coral’s upper growth limit, the relative sea level on the non-volcanic coast was almost as high as the present level, whereas that on the volcanic coast was 0.4–2.0 m higher than present. Therefore, the exposure of these dead coral heads and their discrepancy in elevation may be the result of tectonic uplift caused by volcanic activities. From these results, the highest sea level of upward coral growth must be defined first when using fossil corals to reconstruct past sea levels. Meanwhile, vertical tectonics have to be taken into account as a significant factor when conducting high-resolution sea level reconstruction, although the South China coast is located in a “tectonically stable” region.
Characteristics of the crustal structure and hypocentral tectonics in the epicentral area of Nan’ao earthquake (M7.5), the northeastern South China Sea
Huilong Xu,Xuelin Qiu,Minghui Zhao,Jinlong Sun,Junjiang Zhu
Chinese Science Bulletin , 2006, DOI: 10.1007/s11434-006-9095-x
Abstract: 1918 Nan’ao earthquake (M7.5) occurred in the northeast coastal areas of Guangdong Province. With the seismogeological survey of the epicentral area and history materials analyses, the earthquake epicenter was estimated to locate in the intersection part of the Binhai fault zone (Littoral) and Huanggangshui fault, which strikes NEE and NW, respectively. The activities of the NEE-striking thrust fault and NW-striking extensional fault that were attributed to 1918 Nan’ao earthquake occurred in the Dongshan Island of the epicentral area; they reflected the focal stress field with compression in NW-SE direction and extension in NE-SW direction. The isoseismal contour of seismic intensity X shows a shape of ‘X’ composed of two mutually overlapping ellipses with two axes striking NEE and NW, respectively, and such shape implies that the occurrence of this earthquake is controlled by a pair of conjugate seismotectonic faults constituted by the NEE-striking Binhai fault zone and the NW-striking Huanggangshui fault. The Binhai fault zone is a dominant seismogenic structure, and the NW-striking Huanggangshui fault is the subdominant one. The onshore-offshore deep seismic profile that crossed the epicentral area and was perpendicular to the strike of the Binhai fault zone was obtained. According to the analyses of the seismic data, the Binhai fault zone is defined as a low velocity zone with SE dip-slip in the crustal structure section. The Binhai fault zone is a boundary fault between the South China subplate and South China Sea subplate. The crust structure on the northwest side of Binhai fault zone is a normal continental crust with a thickness of 30 km, and the one on the southeast side of the fault zone is a thinning continental crust with a thickness of 25–28 km. The Binhai fault zone is an important seismogenic fault and also is an earthquake-controlling fault. The intersection part between the Binhai fault zone and the low velocity zone of upper crust is advantageous to stress concentration and strain energy accumulation, and presents the deep dynamic conditions for the earthquake’s pregnancy and occurrence.
Crustal Structure Revealed by a Deep Seismic Sounding Profile of Baijing-Gaoming-Jinwan in the Pearl River Delta Crustal Structure Revealed by a Deep Seismic Sounding Profile of Baijing-Gaoming-Jinwan in the Pearl River Delta
ZHANG Xiang,YE Xiuwei,LV Jinshui,SUN Jinlong,WANG Xiaona
- , 2018,
Abstract: The Pearl River Estuary area, located in the middle part of the southern China coastal seismic belt, has long been considered a potential source of strong earthquakes above magnitude 7.0. To scientifically assess the potential strong earthquake risk in this area, a three-dimensional artificial seismic sounding experiment, consisting of a receiving array and seabed seismograph, was performed to reveal the deep crustal structure in this region. We used artificial ship-borne air-gun excitation shots as sources, and fixed and mobile stations as receivers to record seismic data from May to August 2015. This paper presents results along a line from the western side of the Pearl River Estuary to the western side of the Baijing-Gaoming-Jinwan profile. A two-dimensional velocity structure was constructed using seismic travel-time tomography. The inversion results show that the Moho depth is 27 km in the coastal area and 30 km in the northwest of the Pearl River Estuary area, indicating that the crust thins from land to sea. Two structural discontinuities and multiple low-velocity anomalies appear in the crustal section. Inside both discontinuity zones, a low-velocity layer, with a minimum velocity of 6.05 km s~(-1), exists at a depth of about 15 km, and another, with a minimum velocity of 6.37 km s~(-1), exists at a depth of about 21.5 km between the middle and lower crust. These low velocities suggest that the discontinuities may consist of partly molten material. Earthquakes with magnitudes higher than 5.0 occurred in the low-velocity layer along the profile. The deep Kaiping-Enping fault, rooted in the crust, may be one of the most important channels for deep material upwelling and is related to tectonic movement since the Cretaceous in the Pearl River Delta tectonic rift basin
Perineal Electric Burn Reconstruction Using Modified Thoraco-Umbilical Flap  [PDF]
Bin Xu, Jinlong Wang
International Journal of Clinical Medicine (IJCM) , 2016, DOI: 10.4236/ijcm.2016.77050
Abstract: Perineal reconstruction is an essential component of the overall treatment plan of perineal electric burn, but it is a very difficult and complex job. The modified thoraco-umbilical flap may be a perfect way of repairing perineal area. It is based on the deep inferior epigastric artery and vein and the superior epigastric artery and vein, which look like the “reverse TRAM flap”. The large flap could be fashioned into a perfect perineal area without the need for free flap. It left a satisfactory donor scar, and it avoided the need to change the patient’s position during the operation. Four cases were reconstructed by modified thoraco-umbilical flap after perineal electric burn, and all of them were satisfied with the results. The modified thoraco-umbilical flap has been emerged as a very useful reconstructive tool and is particularly valuable in reconstruction of the perineal electric burn.
STABILIZING EFFECT OF p-TYPE LONE PAIR ELECTRONS OF OXYGENON ANTIOXIDANT PHENOXYL FREE RADICALS
氧的p型孤对电子对抗氧化剂苯氧自由基的稳定作用

Zhang Hongyu,Li Jinlong,Sun Peng,
张红雨
,李金龙,孙蓬

生物物理学报 , 1999,
Abstract: 用AM1方法计算了几种甲氧基苯酚的ΔHOF值,以此为理论指标探讨了甲氧基氧的p型孤对电子对苯氧自由基的稳定作用。发现p型孤对电子对邻、对位苯氧自由基的稳定作用较强,对间位自由基没有稳定作用,呈现出明显的位置效应。同时p型孤对电子轨道的扭转对稳定作用有较大影响。当轨道与苯环平面垂直时,稳定作用最强,而当轨道与苯环平面平行时,稳定作用最弱。最后将上述结果用于黄酮类抗氧化剂和维生素E,阐明了许多实验现象。
Reversible Transition Between Thermodynamically Stable Phases with Low Density of Oxygen Vacancies on SrTiO$_3$(110) Surface
Fengmiao Li,Zhiming Wang,Sheng Meng,Yongbao Sun,Jinlong Yang,Qinlin Guo,Jiandong Guo
Physics , 2011, DOI: 10.1103/PhysRevLett.107.036103
Abstract: The surface reconstruction of SrTiO$_3$(110) is studied with scanning tunneling microscopy and density functional theory (DFT) calculations. The reversible phase transition between (4$\times$1) and (5$\times$1) is controlled by adjusting the surface metal concentration [Sr] or [Ti]. Resolving the atomic structures of the surface, DFT calculations verify that the phase stability changes upon the chemical potential of Sr or Ti. Particularly, the density of oxygen vacancies is low on the thermodynamically stabilized SrTiO$_3$(110) surface.
Strain Effect on Energy Gaps of Armchair Graphene Nanoribbons
Lian Sun,Qunxiang Li,Hao Ren,Q. W. Shi,Jinlong Yang,J. G. Hou
Physics , 2007,
Abstract: We report a first-principles study on electronic structures of the deformed armchair graphene nanoribbons (AGNRs). The variation of the energy gap of AGNRs as a function of uniaxial strain displays a zigzag pattern, which indicates that the energy gaps of AGNRs can be effectively tuned. The spatial distributions of two occupied and two empty subbands close to the Fermi level are swapped under different strains. The tunable width of energy gaps becomes narrower as increasing the width of AGNRs. Our simulations with tight binding approximation, including the nearest neighbor hopping integrals between $\pi$- orbitals of carbon atoms, reproduce these results by first-principles calculations. One simple empirical formula is obtained to describe the scaling behavior of the maximal value of energy gap as a function of the width of AGNRs.
High-precision Absolute Distance Measurements over a Long Range Based on Two Optoelectronic Oscillators
Jinlong Yu,Ju Wang,Wang Miao,Jigui Zhu,Bin Sun,Wenrui Wang,Hao Hu
Physics , 2012,
Abstract: Absolute distance measurement (ADM) over a long range has been studied intensely over the last several decades, due to its important applications in large-scale manufacturing and outer space explorations [1-5]. Traditional absolute distance measurements utilize detection of time-of-flight information, detection of phase shift, or a combination of the two [6-17]. In this paper, we present a novel scheme for high-precision ADM over a long range based on frequency detection by using two optoelectronic oscillators (OEO) to convert distance information to frequency information. By taking advantage of accumulative magnification theory, the absolute error of the measured distance is magnified by about 2*10E5 times, which makes the precision of the measured distance significantly improved. In our experiments, the maximum error is 1.5 um at the emulated ~6 km distance, including the drift error of about 1 um in the air path due to the change in environmental conditions. In addition, the measurable distance using this scheme could be further extended. The highest relative measurement precision is 2*10E10 in our current system while the actual relative measurement precision of our experimental system is limited by the variation of atmospheric conditions and is about 4*10E9.
Spatial Variations of b-Values in the Coastal Area of Guangdong Spatial Variations of b-Values in the Coastal Area of Guangdong
ZHOU Pengxiang,XIA Shaohong,SUN Jinlong,CAO Jinghe,XU Huilong,ZHAO Fang,CHEN Chuanxu
- , 2018,
Abstract: We used earthquake catalogs recorded by Guangdong Seismological Network from 2008 to 2014 to resolve the spatial variations of b-values in the coastal area of Guangdong, particularly in three key research areas(Yangjiang, Heyuan, and offshore Nanao Island) with strong seismicity. Our results revealed that b-values exhibited significant spatial variations, and zones with low b-values could indicate the most likely seismogenic area of large earthquakes. We observed three clear low b-value patches in the offshore Nanao Island. We found a distinct high b-value peak at the depth of 11 km and two minimum peaks at about 14 and 7–8 km in the Yangjiang area. The overall b-values generally decrease with depth in the Heyuan area. The spatial variations of b-values reflect tectonic anomalies; that is, the ‘low-high-low' distribution of b-values in the offshore Nanao Island and the Yangjiang area may indicate the anomaly of the crustal structure with a weak layer. The b-values of reservoir-induced seismicity are obviously lower than that induced by tectonism. This finding indicates that the reservoir area is generally at high stress state under the condition of high pore pressure. We inferred that large earthquakes might be prone to occur at 10–12 km depth in the offshore Nanao Island, at 12–15 km depth in the Yangjiang area, and at the lower part of the seismic activity zone in the Heyuan area. Moreover, the upstream area of the Xinfengjiang reservoir is the most likely area of future large earthquakes in the Heyuan area
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