Based on the radar data and lightning position indicator data of strong thunderstorm weather which happened in Fuxin on July 8,2007,the relationship between the lightning activity and the radar echo was analyzed.The r...Based on the radar data and lightning position indicator data of strong thunderstorm weather which happened in Fuxin on July 8,2007,the relationship between the lightning activity and the radar echo was analyzed.The results showed that Fuxin area located in the cross position of T-shaped trough and was affected by the cold air which continuously glided down.The corresponding warm front on the ground advanced southward and arrived here.It was the weather background of this thunderstorm weather.The position variation of lightning occurrence was closely related to the strong echo movement of squall line,and the velocity echo clearly reflected and predicted the movement tendency of the radar echo.展开更多
The economic system of mining city is of typical vulnerability characteristics that can be manifested by its high economic sensitivity and lack of response capacity to the gradual depletion of regional mineral resourc...The economic system of mining city is of typical vulnerability characteristics that can be manifested by its high economic sensitivity and lack of response capacity to the gradual depletion of regional mineral resources. Taking Fuxin City of Liaoning Province as a case, this paper established an economic vulnerability assessment method integrating BP neural network with vulnerability index, then carried out an economic vulnerability assessment of Fuxin during 1989-2006. The results indicate that: 1) Affected by the gradual depletion of regional mineral resources, the economic development of Fuxin had kept high economic sensitivity from 1995 to 2001, and the response capacity to cope with and adapt to the impacts of the perturbation of mineral resources was weak and relatively lag. The evolution of economic vulnerability can be divided into three stages: in 1989-1994, the economic vulnerability of Fuxin City decreased slowly; in 1995-2001, the beginning stage of economic transformation, the economic vulnerability of Fuxin City went up rapidly; in 2002-2006, the economic vulnerability of Fuxin City descended and showed a trend to be stable. 2) The influence of economic sensitivity on Fuxin′s economic vulnerability is more evident than that of response capacity. 3) The decreasing supply of mineral resources and the simple industrial structure are main factors leading to the economic sensitivity of Fuxin. 4) The improvement of economic response capacity of Fuxin has typical characteristics of input-driven growth, and external assistance is of great importance to the rapid improvement of economic response capacity of Fuxin. And 5) the change from the simple industrial structure to diversified one of Fuxin is still unaccomplished, and the contribution of non-coal-based industry to local economic development is relatively limited.展开更多
The early Albian Oceanic Anoxic Event 1 b(OAE 1 b) is well documented in the Tethys, Pacific and North Atlantic, but few studies have evaluated whether or not terrestrial records of OAE 1 b exist. In order to identify...The early Albian Oceanic Anoxic Event 1 b(OAE 1 b) is well documented in the Tethys, Pacific and North Atlantic, but few studies have evaluated whether or not terrestrial records of OAE 1 b exist. In order to identify terrestrial records of the early Albian OAE 1 b and to infer possible driving mechanisms, an integrated multi-proxy study from the late Aptian to Albian in the Fuxin lacustrine basin was conducted,including thick, organic-rich black mudstones, total organic carbon(TOC), organic carbon isotopes(d13 Corg), mercury concentration(Hg) and results from pyrolysis analyses(S2, Tmaxand HI). Results show three distinct short-term negative d13 Corgexcursions corresponding with relatively high TOC values,which could be counterparts of the Kilian, Paquier and Leenhardt sub-events of the early Albian OAE1 b. Atmospheric CO2 concentration(p CO2) recovered from C3 plant d13 Corgcompositions indicates an increasing trend in Unit C during the early Albian, and there are three short-term increases of p CO2 corresponding to the three sub-events of OAE 1 b at this time interval. We infer that a trend of increasing p CO2 during the Kilian sub-event in the study area is closely related to volcanism. Continental weathering calculated using chemical weathering indices(CIA, WIP and MIA(O)) show an increasing trend during the OAE 1 b interval, likely resulting from warmer and more humid conditions. Mixed sources of terrestrial plants and lacustrine plankton demonstrated by pyrolysis analyses(HI vs. Tmaxand S2 vs. TOC), indicate a terrestrial contribution to the organic-rich sediments of the Kilian, Paquier and Leenhardt sub-events of OAE 1 b. We suggest that a CO2-forced greenhouse effect during the early Albian might have triggered the relatively warm and humid palaeoclimatic conditions, and intensified chemical weathering that combined to create high nutrient and organic matter levels that were flushed into lakes contributing to eutrophication and anoxia in lacustrine and in contemporaneous oceanic systems.展开更多
To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin...To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin National Basic Meteorological Stations from 1981 to 2010,the distribution characteristics of cloud water resources,potential and countermeasures of artificial precipitation enhancement in Fuxin region of Liaoning Province were studied. The results show that the annual average quantity of cloud water resources in the air over Fuxin region over the past 30 years was 285. 6 × 10~8m^3,but the annual average precipitation was only 471.8 mm( amounting to 47.2 ×10~8m^3 of water resources),accounting for only16. 5% of total quantity of cloud water resources in the air; 12 times of artificial precipitation enhancement operation experiments were carried out by using the weather models and technical indicators suitable for artificial precipitation enhancement in Fuxin region,and the artificial precipitation efficiency was 18. 3% on average,5. 2% higher than before,and the annual average precipitation could increase by 2. 5 × 10~8m^3 approximately. All of these have great significance for implementing artificial precipitation enhancement operation scientifically and effectively,maximizing the exploitation of cloud water resources in the air,increasing total quantity of water resources,and mitigating drought in Fuxin region.展开更多
OBJECTIVE:To observe the effects of Fuxin decoction in rats with heart failure induced by doxorubicin injections.METHODS:We employed a doxorubicin-induced heart failure model to investigate the effect of Fuxin decocti...OBJECTIVE:To observe the effects of Fuxin decoction in rats with heart failure induced by doxorubicin injections.METHODS:We employed a doxorubicin-induced heart failure model to investigate the effect of Fuxin decoction.Rats were orally administered with Fuxin decoction from 10 to 40 mg/kg.Organization structure changes were assessed by histology,circulating levels of oxidative stress-related biomarkers and inflammatory cytokines were detected via enzyme-linked immunosorbent assay.RESULTS:Administration of Fuxin decoction improved the growth retardation in doxorubicin hydrochloride injection rats.Cardiac involvement was alleviated by Fuxin decoction,as well as changes of congestion systemic circulation in this rat models.Furthermore,Fuxin decoction regulates immune responses and suppresses oxidation reaction in doxorubicin hydrochloride-induced rats.CONCLUSION:Fuxin decoction might be an interesting candidate for congestive heart failure.展开更多
The analysis on the trend change of heat resources serviced for the industrial structure adjustment of agriculture and the increase of agricultural economical income.The result showed that increase trend of heat resou...The analysis on the trend change of heat resources serviced for the industrial structure adjustment of agriculture and the increase of agricultural economical income.The result showed that increase trend of heat resources in Fuxin region was obvious.≥0 ℃ first day trend advanced 12 d,and the interval days trend increased 17 d.Moreover,the accumulated temperature trend increased 396 ℃.≥10 ℃ first day trend advanced 7 d,and the final day trend delayed 9 d.Moreover,the interval days increased 15 d,and the accumulated temperature trend increased 350 ℃.The latest frost date trend advanced 10 d,and the first frost date trend delayed 12 d.Moreover,the frost-free period trend prolonged 23 d.On one hand,the increase of heat resources favored the adjustment of crops variety structure,the development of agricultural facilities,the change of agricultural measures,the improvement of multiple cropping indexes and the increase of agricultural economical income.On the other hand,it made that the agricultural pests shifted northward by passing the winter boundary,and the insect source radix increased.In addition,the heat resources increase would also cause that the soil potential evapotranspiration increased,and the precipitation utilization ratio decreased.Then,the agricultural production environment worsened,and the dry land agriculture,irrigated agriculture were threatened.It could be said that the advantages and disadvantages of climate warming and heat resources increase on the agricultural production both existed.展开更多
Further evidences show that most mining dynamic disasters are mainly oc- curred nearby NNE and near SN geological structures.In-situ stress measurement in Fuxin basin shows that the orientation of major compressed str...Further evidences show that most mining dynamic disasters are mainly oc- curred nearby NNE and near SN geological structures.In-situ stress measurement in Fuxin basin shows that the orientation of major compressed stress is near EW.At this stress field,geological structures with deferent strike have deferent stress state and dis- place mode.NNE and near SN geological structures are compressed to thrust and come into being high stress zone.NWW and NEE geological structures are tensile to separate and not prone to being low stress zone.NW structure is intervenient of them.So NEE and near SN structures are easy to occurre mining dynamic disasters and NWW and NEE structures is 'safety' comparatively.The mining dynamic disaster is controlled by stress state of geologic structure,which is determined by its strike.展开更多
In order to promote the exploration and development of continental shale gas reservoirs in China further,we systematically summarized the geological features of typical continental shale,such as the Ordos Basin.Then,t...In order to promote the exploration and development of continental shale gas reservoirs in China further,we systematically summarized the geological features of typical continental shale,such as the Ordos Basin.Then,the shale gas reservoir characteristics,geochemical charac-teristics and fracturing performance of the Lower Cretaceous Shahai Fm in the Fuxin Basin were analyzed by using the data of TOC contents,rock specific surface,pore size distribution and X-ray diffraction analysis of the whole rock.Based on this,it was compared with the marine/continental shale gas reservoirs from the aspect of geological feature.Finally,the shale gas reservoir and resource potential of the Shahai Fm were evaluated.And the following research results were obtained.First,the formation age of China's continental shale is later,its TOC contents vary in a large range,and its organic matters are mainly of a mixed-humic type.And it is characterized by low thermal evolution degree,low quartz content,high feldspar content,high carbonate content,and comparability of total brittle mineral content to marine shale.Second,shale in the Shahai Fm has shallow burial depth and its mineral composition is dominated by quartz,feldspar and carbonate minerals.Its pores are mainly mesopores with an average porosity of 3.47%.There are diverse reservoir spaces,which is favorable for the accumulation of shale gas.Third,the TOC content of the Shahai Fm shale is mainly above 2%,with a moderate thermal evolution degree of organic matter and high gas content.Fourth,the total brittle mineral content of Shahai Fm shale is up to 60%,indicating a good fracturing performance.Fifth,shale reservoirs in the Shahai Fm can be classified into three categories.Type Ⅰ is target reservoirs of exploration and development,and Type Ⅱ is favorable reservoirs.It is estimated that the amount of shale gas resources are in the range of 232.2-286.2 billion m^(3).It is concluded that the Shahai Fm shale in the Fuxin Basin has both resource potential in geology and fracturing performance in engineering,and its exploration and development prospect is broad.What's more,the potential of commercial shale gas development is great in the sweet-point areas.展开更多
Thunderstorms are very spectacular super-long-range discharge processes in the atmosphere, which can cause tremendous damage in an instant, often leading to casualties, resulting in damage to buildings, power supply s...Thunderstorms are very spectacular super-long-range discharge processes in the atmosphere, which can cause tremendous damage in an instant, often leading to casualties, resulting in damage to buildings, power supply systems, communication equipment and forest fires, causing major economic losses. In order to successfully predict thunderstorms, and many economic losses can be avoided. Using the observation data of two county stations in Yimeng County and Zhangwu County from June to August 2009-2015, 40 typical thunderstorm weather processes were selected, and 15 convective parameters related to thunderstorm activities were calculated. After statistical analysis, there are seven convective parameters with significant correlation with thunderstorm activity: convective affective potential energy (CAPE), 850 hPa specific humidity, 700 hPa specific humidity, 850 hPa false equivalent temperature, maximum rising speed, strong weather threat index (SWEAT) and zero degree height (ZH), and the correlation is greater than 0.3. We determined the forecast threshold of the above forecasting factors, calculated the fitting rate and conducted a test report. We used the pup product to establish a short-term proximity indicator for thunderstorm warning. Three products with combined reflectivity, vertical integrated liquid water content and echo top height were selected as warning indicators for thunderstorms. The above research results were used to forecast the thunderstorm weather from June to August in the year of 2015 and 2016. The forecast accuracy rate is more than 85%. In summary, the above methods have reference value and indicative significance for the forecast and warning of thunderstorm weather in Fuxin City, China.展开更多
On the basis of ANSYS finite element model(FEM) software, the deep-level rockburst in Fuxin coalfield was simulated numerically. Based on Haizhou Mine and Wulong Mine as two typical deep-level rockburst examples in Fu...On the basis of ANSYS finite element model(FEM) software, the deep-level rockburst in Fuxin coalfield was simulated numerically. Based on Haizhou Mine and Wulong Mine as two typical deep-level rockburst examples in Fuxin coalfield, the rules and characteristics of the deep-level rockburst were analyzed. And the models were es- tablished. For Haizhou mine, the relationship between mining distance and rockburst was presented when 100, 300, 600 m were mined in 3313 working face. When 300 m were mined, the rockburst began to emerge. When 600 m were mined, the rockburst was the most possible to happen and the compression stress of the working face reached to the maximum value. The effect of tectonic stress on synclinal axis is also a key factor to rockburst occurrence. This was verified by the rockburst happened when 496 m were mined. For Wulong mine, based on the 311 working face as an example, the contours of Y stress in the roof and floor were obtained when the mining distance were 100, 200, 300 and 400 m. When 100 and 400 m were mined, the high stress con- centration regions occurred in the front of working face. This shows the rockburst is easy to happen. It is confirmed by the rockburst when 91m were mined in 311 working plane. The above indicates that the numerical simulation has instructive rule to study the deep-level rockburst in Fuxin coalfield.展开更多
[Objectives]The purpose was to analyze and predict the mechanism of Fuxin decoction in the treatment of heart failure based on network pharmacology.[Methods]Relevant tools and methods of network pharmacology were used...[Objectives]The purpose was to analyze and predict the mechanism of Fuxin decoction in the treatment of heart failure based on network pharmacology.[Methods]Relevant tools and methods of network pharmacology were used to obtain the active ingredients and action targets of Fuxin decoction and action targets of heart failure,find out the key targets and core clusters of Fuxin decoction on heart failure,and analyze related signal pathways,to explore possible molecular mechanisms.[Results]A total of 53 active ingredients and 224 action targets of Fuxin decoction,1010 heart failure-related target genes,and 94 drug-disease directly acting targets were obtained.From the PPI network constructed,225 key targets and a core cluster composed of 56 nodes and 297 interactions were screened out.Association with tumors,glutamate synapse and other related pathways and related genes such as adenylate cyclase and MAPK were known.[Conclusions]The mechanism of Fuxin decoction in the treatment of heart failure is related toβARs-G protein-adenylate cyclase,PI3K-Akt signaling pathway and HSP90,MAPK and other proteins.展开更多
Based on the monthly precipitation data in Fuxin from 1951 to 2019,the M-K and Pettitt mutation test,Morlet wavelet analysis,CWT,XWT and WTC methods were used to study the correlation between precipitation and sunspot...Based on the monthly precipitation data in Fuxin from 1951 to 2019,the M-K and Pettitt mutation test,Morlet wavelet analysis,CWT,XWT and WTC methods were used to study the correlation between precipitation and sunspots in Fuxin in the past 69 years.The results show that from 1951 to 2019,only the spring precipitation in Fuxin showed an upward trend,and annual precipitation,the precipitation in the other three seasons and the annual number of sunspots all showed a relatively obvious downward trend.The first main cycles of annual precipitation,the annual number of sunspots,spring,summer,autumn and winter precipitation were quasi-28,quasi-16,quasi-51,quasi-51,quasi-27 and quasi-11 years,respectively.Annual precipitation,the annual number of sunspots,spring,summer,autumn and winter precipitation changed suddenly in 1980,2005,2005,1980,1992 and 1980,respectively.Both annual precipitation and seasonal precipitation had a relatively obvious resonance cycle of 5-15 years with sunspots,indicating that there was a good correlation between the annual number of sunspots and annual precipitation on an interannual scale.展开更多
Based on the daily data of visits for respiratory diseases in two grade A hospitals as well as meteorological factors and air pollution in Fuxin City from December 1, 2020 to November 31, 2021, PCA and RBF neural netw...Based on the daily data of visits for respiratory diseases in two grade A hospitals as well as meteorological factors and air pollution in Fuxin City from December 1, 2020 to November 31, 2021, PCA and RBF neural network were used to study the effects of meteorological factors and air pollution on respiratory diseases and predict them. The results showed that the number of daily visits was the largest in winter(accounting for 62.5%), followed by spring(15.2%), and it was the smallest in autumn(only 6.9%). The correlation between the number of daily visits and meteorological factors was higher than that of air pollution factors, and the correlation with temperature and ozone was the highest. The response coefficient of daily visits to each factor increased first and then decreased within 9 d, and the peak was 4-5 d behind. RBF and PCA-RBF neural network models were established to predict the number of daily visits, and the accuracy was 86.3% and 95.2%, respectively.展开更多
基金Supported by The Special Project of Public Welfare Industry Scientific Research(GYHY200806014)Nanjing University of Information Science & Technology Project(E30JG0730)
文摘Based on the radar data and lightning position indicator data of strong thunderstorm weather which happened in Fuxin on July 8,2007,the relationship between the lightning activity and the radar echo was analyzed.The results showed that Fuxin area located in the cross position of T-shaped trough and was affected by the cold air which continuously glided down.The corresponding warm front on the ground advanced southward and arrived here.It was the weather background of this thunderstorm weather.The position variation of lightning occurrence was closely related to the strong echo movement of squall line,and the velocity echo clearly reflected and predicted the movement tendency of the radar echo.
基金Under the auspices of Key Program of National Natural Science Foundation of China (No. 40635030)Knowledge Innovation Programs of the Chinese Academy of Sciences (No. KZCX2-YW-342, No. KZCX2-YW-321)
文摘The economic system of mining city is of typical vulnerability characteristics that can be manifested by its high economic sensitivity and lack of response capacity to the gradual depletion of regional mineral resources. Taking Fuxin City of Liaoning Province as a case, this paper established an economic vulnerability assessment method integrating BP neural network with vulnerability index, then carried out an economic vulnerability assessment of Fuxin during 1989-2006. The results indicate that: 1) Affected by the gradual depletion of regional mineral resources, the economic development of Fuxin had kept high economic sensitivity from 1995 to 2001, and the response capacity to cope with and adapt to the impacts of the perturbation of mineral resources was weak and relatively lag. The evolution of economic vulnerability can be divided into three stages: in 1989-1994, the economic vulnerability of Fuxin City decreased slowly; in 1995-2001, the beginning stage of economic transformation, the economic vulnerability of Fuxin City went up rapidly; in 2002-2006, the economic vulnerability of Fuxin City descended and showed a trend to be stable. 2) The influence of economic sensitivity on Fuxin′s economic vulnerability is more evident than that of response capacity. 3) The decreasing supply of mineral resources and the simple industrial structure are main factors leading to the economic sensitivity of Fuxin. 4) The improvement of economic response capacity of Fuxin has typical characteristics of input-driven growth, and external assistance is of great importance to the rapid improvement of economic response capacity of Fuxin. And 5) the change from the simple industrial structure to diversified one of Fuxin is still unaccomplished, and the contribution of non-coal-based industry to local economic development is relatively limited.
基金supported by the Yue Qi Scholar Project of China University of Mining and Technology(Beijing)Chinathe National Natural Science Foundation of China(41572090+1 种基金42002128)Shandong Key Laboratory of Depositional Mineralization&Sedimentary Mineral Shandong University of Science and Technology China(DMSM20190015)。
文摘The early Albian Oceanic Anoxic Event 1 b(OAE 1 b) is well documented in the Tethys, Pacific and North Atlantic, but few studies have evaluated whether or not terrestrial records of OAE 1 b exist. In order to identify terrestrial records of the early Albian OAE 1 b and to infer possible driving mechanisms, an integrated multi-proxy study from the late Aptian to Albian in the Fuxin lacustrine basin was conducted,including thick, organic-rich black mudstones, total organic carbon(TOC), organic carbon isotopes(d13 Corg), mercury concentration(Hg) and results from pyrolysis analyses(S2, Tmaxand HI). Results show three distinct short-term negative d13 Corgexcursions corresponding with relatively high TOC values,which could be counterparts of the Kilian, Paquier and Leenhardt sub-events of the early Albian OAE1 b. Atmospheric CO2 concentration(p CO2) recovered from C3 plant d13 Corgcompositions indicates an increasing trend in Unit C during the early Albian, and there are three short-term increases of p CO2 corresponding to the three sub-events of OAE 1 b at this time interval. We infer that a trend of increasing p CO2 during the Kilian sub-event in the study area is closely related to volcanism. Continental weathering calculated using chemical weathering indices(CIA, WIP and MIA(O)) show an increasing trend during the OAE 1 b interval, likely resulting from warmer and more humid conditions. Mixed sources of terrestrial plants and lacustrine plankton demonstrated by pyrolysis analyses(HI vs. Tmaxand S2 vs. TOC), indicate a terrestrial contribution to the organic-rich sediments of the Kilian, Paquier and Leenhardt sub-events of OAE 1 b. We suggest that a CO2-forced greenhouse effect during the early Albian might have triggered the relatively warm and humid palaeoclimatic conditions, and intensified chemical weathering that combined to create high nutrient and organic matter levels that were flushed into lakes contributing to eutrophication and anoxia in lacustrine and in contemporaneous oceanic systems.
基金Supported by Science and Technology Planning Project for social development in Fuxin City of Liaoning Province(20151305)
文摘To exploit cloud water resources to increase precipitation on the ground effectively,according to the principles of artificial precipitation enhancement,based on historical data of weather and precipitation from Fuxin National Basic Meteorological Stations from 1981 to 2010,the distribution characteristics of cloud water resources,potential and countermeasures of artificial precipitation enhancement in Fuxin region of Liaoning Province were studied. The results show that the annual average quantity of cloud water resources in the air over Fuxin region over the past 30 years was 285. 6 × 10~8m^3,but the annual average precipitation was only 471.8 mm( amounting to 47.2 ×10~8m^3 of water resources),accounting for only16. 5% of total quantity of cloud water resources in the air; 12 times of artificial precipitation enhancement operation experiments were carried out by using the weather models and technical indicators suitable for artificial precipitation enhancement in Fuxin region,and the artificial precipitation efficiency was 18. 3% on average,5. 2% higher than before,and the annual average precipitation could increase by 2. 5 × 10~8m^3 approximately. All of these have great significance for implementing artificial precipitation enhancement operation scientifically and effectively,maximizing the exploitation of cloud water resources in the air,increasing total quantity of water resources,and mitigating drought in Fuxin region.
基金grants from clinical-scientific research program of Capital Medical University(No.16JL74)Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support(No.ZYLX201611)
文摘OBJECTIVE:To observe the effects of Fuxin decoction in rats with heart failure induced by doxorubicin injections.METHODS:We employed a doxorubicin-induced heart failure model to investigate the effect of Fuxin decoction.Rats were orally administered with Fuxin decoction from 10 to 40 mg/kg.Organization structure changes were assessed by histology,circulating levels of oxidative stress-related biomarkers and inflammatory cytokines were detected via enzyme-linked immunosorbent assay.RESULTS:Administration of Fuxin decoction improved the growth retardation in doxorubicin hydrochloride injection rats.Cardiac involvement was alleviated by Fuxin decoction,as well as changes of congestion systemic circulation in this rat models.Furthermore,Fuxin decoction regulates immune responses and suppresses oxidation reaction in doxorubicin hydrochloride-induced rats.CONCLUSION:Fuxin decoction might be an interesting candidate for congestive heart failure.
文摘The analysis on the trend change of heat resources serviced for the industrial structure adjustment of agriculture and the increase of agricultural economical income.The result showed that increase trend of heat resources in Fuxin region was obvious.≥0 ℃ first day trend advanced 12 d,and the interval days trend increased 17 d.Moreover,the accumulated temperature trend increased 396 ℃.≥10 ℃ first day trend advanced 7 d,and the final day trend delayed 9 d.Moreover,the interval days increased 15 d,and the accumulated temperature trend increased 350 ℃.The latest frost date trend advanced 10 d,and the first frost date trend delayed 12 d.Moreover,the frost-free period trend prolonged 23 d.On one hand,the increase of heat resources favored the adjustment of crops variety structure,the development of agricultural facilities,the change of agricultural measures,the improvement of multiple cropping indexes and the increase of agricultural economical income.On the other hand,it made that the agricultural pests shifted northward by passing the winter boundary,and the insect source radix increased.In addition,the heat resources increase would also cause that the soil potential evapotranspiration increased,and the precipitation utilization ratio decreased.Then,the agricultural production environment worsened,and the dry land agriculture,irrigated agriculture were threatened.It could be said that the advantages and disadvantages of climate warming and heat resources increase on the agricultural production both existed.
基金the Major State Basic Research Development Program of China"973"Program(2005CB221501)the General Project of the National Natural Science Foundation of PR China(50574047)
文摘Further evidences show that most mining dynamic disasters are mainly oc- curred nearby NNE and near SN geological structures.In-situ stress measurement in Fuxin basin shows that the orientation of major compressed stress is near EW.At this stress field,geological structures with deferent strike have deferent stress state and dis- place mode.NNE and near SN geological structures are compressed to thrust and come into being high stress zone.NWW and NEE geological structures are tensile to separate and not prone to being low stress zone.NW structure is intervenient of them.So NEE and near SN structures are easy to occurre mining dynamic disasters and NWW and NEE structures is 'safety' comparatively.The mining dynamic disaster is controlled by stress state of geologic structure,which is determined by its strike.
基金Project supported by the National Major Science and Technology Projects of China Project“Evaluation method and expert system for commercial shale gas production zone”(No.:2017ZX05035004-003).
文摘In order to promote the exploration and development of continental shale gas reservoirs in China further,we systematically summarized the geological features of typical continental shale,such as the Ordos Basin.Then,the shale gas reservoir characteristics,geochemical charac-teristics and fracturing performance of the Lower Cretaceous Shahai Fm in the Fuxin Basin were analyzed by using the data of TOC contents,rock specific surface,pore size distribution and X-ray diffraction analysis of the whole rock.Based on this,it was compared with the marine/continental shale gas reservoirs from the aspect of geological feature.Finally,the shale gas reservoir and resource potential of the Shahai Fm were evaluated.And the following research results were obtained.First,the formation age of China's continental shale is later,its TOC contents vary in a large range,and its organic matters are mainly of a mixed-humic type.And it is characterized by low thermal evolution degree,low quartz content,high feldspar content,high carbonate content,and comparability of total brittle mineral content to marine shale.Second,shale in the Shahai Fm has shallow burial depth and its mineral composition is dominated by quartz,feldspar and carbonate minerals.Its pores are mainly mesopores with an average porosity of 3.47%.There are diverse reservoir spaces,which is favorable for the accumulation of shale gas.Third,the TOC content of the Shahai Fm shale is mainly above 2%,with a moderate thermal evolution degree of organic matter and high gas content.Fourth,the total brittle mineral content of Shahai Fm shale is up to 60%,indicating a good fracturing performance.Fifth,shale reservoirs in the Shahai Fm can be classified into three categories.Type Ⅰ is target reservoirs of exploration and development,and Type Ⅱ is favorable reservoirs.It is estimated that the amount of shale gas resources are in the range of 232.2-286.2 billion m^(3).It is concluded that the Shahai Fm shale in the Fuxin Basin has both resource potential in geology and fracturing performance in engineering,and its exploration and development prospect is broad.What's more,the potential of commercial shale gas development is great in the sweet-point areas.
文摘Thunderstorms are very spectacular super-long-range discharge processes in the atmosphere, which can cause tremendous damage in an instant, often leading to casualties, resulting in damage to buildings, power supply systems, communication equipment and forest fires, causing major economic losses. In order to successfully predict thunderstorms, and many economic losses can be avoided. Using the observation data of two county stations in Yimeng County and Zhangwu County from June to August 2009-2015, 40 typical thunderstorm weather processes were selected, and 15 convective parameters related to thunderstorm activities were calculated. After statistical analysis, there are seven convective parameters with significant correlation with thunderstorm activity: convective affective potential energy (CAPE), 850 hPa specific humidity, 700 hPa specific humidity, 850 hPa false equivalent temperature, maximum rising speed, strong weather threat index (SWEAT) and zero degree height (ZH), and the correlation is greater than 0.3. We determined the forecast threshold of the above forecasting factors, calculated the fitting rate and conducted a test report. We used the pup product to establish a short-term proximity indicator for thunderstorm warning. Three products with combined reflectivity, vertical integrated liquid water content and echo top height were selected as warning indicators for thunderstorms. The above research results were used to forecast the thunderstorm weather from June to August in the year of 2015 and 2016. The forecast accuracy rate is more than 85%. In summary, the above methods have reference value and indicative significance for the forecast and warning of thunderstorm weather in Fuxin City, China.
基金Supported by National Nature Science Foundation of China (50490275)
文摘On the basis of ANSYS finite element model(FEM) software, the deep-level rockburst in Fuxin coalfield was simulated numerically. Based on Haizhou Mine and Wulong Mine as two typical deep-level rockburst examples in Fuxin coalfield, the rules and characteristics of the deep-level rockburst were analyzed. And the models were es- tablished. For Haizhou mine, the relationship between mining distance and rockburst was presented when 100, 300, 600 m were mined in 3313 working face. When 300 m were mined, the rockburst began to emerge. When 600 m were mined, the rockburst was the most possible to happen and the compression stress of the working face reached to the maximum value. The effect of tectonic stress on synclinal axis is also a key factor to rockburst occurrence. This was verified by the rockburst happened when 496 m were mined. For Wulong mine, based on the 311 working face as an example, the contours of Y stress in the roof and floor were obtained when the mining distance were 100, 200, 300 and 400 m. When 100 and 400 m were mined, the high stress con- centration regions occurred in the front of working face. This shows the rockburst is easy to happen. It is confirmed by the rockburst when 91m were mined in 311 working plane. The above indicates that the numerical simulation has instructive rule to study the deep-level rockburst in Fuxin coalfield.
基金Supported by National Natural Science Foundation of China(81774247).
文摘[Objectives]The purpose was to analyze and predict the mechanism of Fuxin decoction in the treatment of heart failure based on network pharmacology.[Methods]Relevant tools and methods of network pharmacology were used to obtain the active ingredients and action targets of Fuxin decoction and action targets of heart failure,find out the key targets and core clusters of Fuxin decoction on heart failure,and analyze related signal pathways,to explore possible molecular mechanisms.[Results]A total of 53 active ingredients and 224 action targets of Fuxin decoction,1010 heart failure-related target genes,and 94 drug-disease directly acting targets were obtained.From the PPI network constructed,225 key targets and a core cluster composed of 56 nodes and 297 interactions were screened out.Association with tumors,glutamate synapse and other related pathways and related genes such as adenylate cyclase and MAPK were known.[Conclusions]The mechanism of Fuxin decoction in the treatment of heart failure is related toβARs-G protein-adenylate cyclase,PI3K-Akt signaling pathway and HSP90,MAPK and other proteins.
基金Supported by the Scientific Research Project of Liaoning Meteorological Bureau in 2022(ZD202208,ZD202257)。
文摘Based on the monthly precipitation data in Fuxin from 1951 to 2019,the M-K and Pettitt mutation test,Morlet wavelet analysis,CWT,XWT and WTC methods were used to study the correlation between precipitation and sunspots in Fuxin in the past 69 years.The results show that from 1951 to 2019,only the spring precipitation in Fuxin showed an upward trend,and annual precipitation,the precipitation in the other three seasons and the annual number of sunspots all showed a relatively obvious downward trend.The first main cycles of annual precipitation,the annual number of sunspots,spring,summer,autumn and winter precipitation were quasi-28,quasi-16,quasi-51,quasi-51,quasi-27 and quasi-11 years,respectively.Annual precipitation,the annual number of sunspots,spring,summer,autumn and winter precipitation changed suddenly in 1980,2005,2005,1980,1992 and 1980,respectively.Both annual precipitation and seasonal precipitation had a relatively obvious resonance cycle of 5-15 years with sunspots,indicating that there was a good correlation between the annual number of sunspots and annual precipitation on an interannual scale.
基金Supported by the Scientific Research Project of Liaoning Meteorological Bureau (ZD202208, ZD202257)Science and Technology Research Project of Fuxin Meteorological Bureau (FX2022-11, FX2022-13)。
文摘Based on the daily data of visits for respiratory diseases in two grade A hospitals as well as meteorological factors and air pollution in Fuxin City from December 1, 2020 to November 31, 2021, PCA and RBF neural network were used to study the effects of meteorological factors and air pollution on respiratory diseases and predict them. The results showed that the number of daily visits was the largest in winter(accounting for 62.5%), followed by spring(15.2%), and it was the smallest in autumn(only 6.9%). The correlation between the number of daily visits and meteorological factors was higher than that of air pollution factors, and the correlation with temperature and ozone was the highest. The response coefficient of daily visits to each factor increased first and then decreased within 9 d, and the peak was 4-5 d behind. RBF and PCA-RBF neural network models were established to predict the number of daily visits, and the accuracy was 86.3% and 95.2%, respectively.
