In the award-winning and widely-acclaimed fictional novel,The Vegetarian,the author,Han Kang,relates a compelling and dramatic story of inexorable psychotic deterioration from the perspective of a tragically affected ...In the award-winning and widely-acclaimed fictional novel,The Vegetarian,the author,Han Kang,relates a compelling and dramatic story of inexorable psychotic deterioration from the perspective of a tragically affected young woman and her close family members.Apart from a variety of interpretations of psychosis from historical,social,psychological,and feminist perspectives,the book also presents a detailed and realistic picture of objective psychotic symptoms that reveals insights into historic and nearly forgotten phenomenological concepts.In this literary case study,we analyze the symptoms remarkably described by the author and briefly review the medical literature on the phenomena of catatonia,schizophrenic autism,paragnomen and the praecox-feeling.展开更多
This paper deals with reduction of losses in electric power distribution system through a dynamic reconfiguration case study of a grid in the city of Mostar,Bosnia and Herzegovina.The proposed solution is based on a n...This paper deals with reduction of losses in electric power distribution system through a dynamic reconfiguration case study of a grid in the city of Mostar,Bosnia and Herzegovina.The proposed solution is based on a nonlinear model predictive control algorithm which determines the optimal switching operations of the distribution system.The goal of the control algorithm is to find the optimal radial network topology which minimizes cumulative active power losses and maximizes voltages across the network while simultaneously satisfying all system constraints.The optimization results are validated through multiple simulations(using real power demand data collected for a few characteristic days during winter and summer)which demonstrate the efficiency and usefulness of the developed control algorithm in reducing the grid losses by up to 14%.展开更多
Introductory courses in vocational education play a foundational role in orienting first-year students to their chosen major and initiating their professional formation.Such courses help newcomers establish a cognitiv...Introductory courses in vocational education play a foundational role in orienting first-year students to their chosen major and initiating their professional formation.Such courses help newcomers establish a cognitive map of the discipline,plan learning pathways,and cultivate identification with the profession,while also serving as a vehicle for integrating ideological-political education.In practice,however,many programs face persistent challenges in textbook development,faculty capacity,curriculum content,and alignment with industry standards,which limit the effectiveness of these courses.With the rollout of national policies such as the Implementation Plan for National Vocational Education Reform,the urgency of strengthening the construction of introductory courses has become increasingly evident.Using the textbook Introduction to Virtual Reality Applications:Cognition,Skills,and Career as a core case,this paper analyzes innovative practices in writing philosophy,course design,school-enterprise collaboration,resource integration,ideological-political infusion,and practical outcomes.Building on this analysis,the paper proposes strategies for reforming introductory courses and building coherent textbook systems in vocational education so as to improve course quality and better support students’professional development.展开更多
Coal bursts pose significant safety and operational challenges in deep mining environments,necessitating effective mitigation strategies to address high-stress concentrations and dynamic failure risks.This study evalu...Coal bursts pose significant safety and operational challenges in deep mining environments,necessitating effective mitigation strategies to address high-stress concentrations and dynamic failure risks.This study evaluated the efficacy of hydraulic fracturing as a preconditioning tool at a longwall face of the Mengcun coal mine with strong coal bursts,Shaanxi Province.The program involved the systematic creation of a fracture network through high-pressure fluid injection,monitored via microseismic arrays,stress measurements,and hydrological sensors.Results demonstrated that hydraulic fracturing effectively redistributed in-situ stresses,reducing high-stress concentrations by up to 30%,lowering the frequency of high-energy microseismic events,and enhancing the stability of fractured zones.However,the presence of unfractured blind spots and interactions with pre-existing faults highlighted the need for optimized well placement and adaptive fracturing designs.These findings underscore the potential of hydraulic fracturing as a critical preconditioning tool in high-stress mining operations,which could provide a framework for improving safety and efficiency in similar geological and operational settings.展开更多
As an important branch of traditional medicine,Zhuang Medicine is renowned for its unique prescriptions and techniques in clinical treatment,with significant therapeutic effects and widespread popularity.This article ...As an important branch of traditional medicine,Zhuang Medicine is renowned for its unique prescriptions and techniques in clinical treatment,with significant therapeutic effects and widespread popularity.This article introduces Professor Fang Gang’s experience in treating obesity-type polycystic ovary syndrome(PCOS)with modified Zhuang Medicine Mao Xia Yin.Professor Fang Gang proposes that the etiology and pathogenesis of obesity-type polycystic ovary syndrome(PCOS)primarily stem from spleen deficiency,which impairs the transport of water and dampness.This dysfunction leads to the accumulation of dampness that transforms into phlegm.Over time,the stagnation of phlegm and dampness generates internal heat,resulting in the formation of“dampness toxin,”“phlegm toxin,”and“heat toxin.”These pathological toxins obstruct the circulation of Qi and blood,causing stasis and the emergence of“stasis toxin.”The buildup of these toxins ultimately blocks the three channels and two pathways,disrupting the harmony among the three Qi of heaven,earth,and man.This disharmony culminates in impaired uterine gland function.Therefore,the treatment mainly focuses on tonifying deficiency,detoxifying,and regulating Qi.展开更多
The research reviewed the concept of family farm and analyzed family farm types including unified, facility rental-oriented, employment-oriented, circular and grain＆oil based family farms, as well as corresponding de...The research reviewed the concept of family farm and analyzed family farm types including unified, facility rental-oriented, employment-oriented, circular and grain＆oil based family farms, as well as corresponding demands in technology and policies. Based on the analysis, the research proposed countermeasures and suggestions. It is necessary to define the range and scale on family farm before giving policy supports. It is important to establish access system of industry and commerce capital to rural areas to guarantee the operators in need be benefited from national preferential policies. Meanwhile, new system on land transfer should be established to guarantee security system for family farm, improve socialized service system and promote government-built production facilities operated by farmers.展开更多
Based on a set of equations established by Duan et al. (1992, 1996) for a geofluid system H2O-CO2-CH4(-N2), a formula is obtained to calculate the heat changes. Combining the geological T-P conditions (geothermal grad...Based on a set of equations established by Duan et al. (1992, 1996) for a geofluid system H2O-CO2-CH4(-N2), a formula is obtained to calculate the heat changes. Combining the geological T-P conditions (geothermal gradients and lithostatic and hydrostatic pressures), the enthalpy of some typical geofluids is figured out. Then the principles of heat transfer of deep-derived supercritical fluids are discussed. The result shows that deep-derived geofluids can bring a large amount of thermal heat and release most heat to the shallow surroundings as they move up, because the molar enthalpies vary very greatly from the deep to shallow, increasing with the increases of T and P. Generally, more than tens of kilojoules heat per molar can be released. Furthermore, the molar enthalpy is affected by the compositions of the geofluids, and the molar enthalpy of CO2, CH4, or N2 is greater than that of H2O, being twice, more than twice, and about 140% of H2O, respectively. Finally, a case study is conducted by investigating a source rock sequence affected hydrothermally by magmatic fluids in the Huimin depression of Shengli Oilfield. The thermal heat calculated theoretically of the fluids related to a diabase intrusion is quite large, which can increase the temperature near the diabase to about 300℃, and that can, to some extent, account for the abnormal rise of the vitrinite reflectance, with the highest of about 3.8% (Ro).展开更多
Model updating issues with high-dimensional and strong-nonlinear optimization processes are still unsolved by most optimization methods.In this study,a hybrid methodology that combines the Gaussian-white-noise-mutatio...Model updating issues with high-dimensional and strong-nonlinear optimization processes are still unsolved by most optimization methods.In this study,a hybrid methodology that combines the Gaussian-white-noise-mutation particle swarm optimization(GMPSO),back-propagation neural network(BPNN)and Latin hypercube sampling(LHS)technique is proposed.In this approach,as a meta-heuristic algorithm with the least modification to the standard PSO,GMPSO simultaneously offers convenient programming and good performance in optimization.The BPNN with LHS establishes the meta-models for FEM to accelerate efficiency during the updating process.A case study of the model updating of an actual bridge with no distribution but bounded parameters was carried out using this methodology with two different objective functions.One considers only the frequencies of the main girder and the other considers both the frequencies and vertical displacements of typical points.The updating results show that the methodology is a sound approach to solve an actual complex bridge structure and offers good agreement in the frequencies and mode shapes of the updated model and test data.Based on the shape comparison of the main girder at the finished state with different objective functions,it is emphasized that both the dynamic and static responses should be taken into consideration during the model updating process.展开更多
A case study of seismic response of an earth embankment foundation on liquefiable soils in Kansai area,western Japan was presented. Based on a calibrated cyclic elasto-plastic constitutive model for liquefiable sand a...A case study of seismic response of an earth embankment foundation on liquefiable soils in Kansai area,western Japan was presented. Based on a calibrated cyclic elasto-plastic constitutive model for liquefiable sand and Biot dynamic coupled theory,the seismic analysis was carried out by using a dynamic effective stress finite element method under plane strain condition. A recent design study was illustrated in detail for a river earth embankment subjected to seismic excitation on the saturated deposits with liquefiable sands. Simulated results of the embankment foundation during liquefaction were obtained for acceleration,displacement,and excess pore water pressures,which were considered to yield useful results for earthquake geotechnical design. The results show that the foundation soil reaches a fully liquefied state with high excess pore pressure ratios approaching to 1.0 due to the earthquake shaking. At the end of the earthquake,the extensive liquefaction causes about 1.0 m lateral spreading at the toe and 60 cm settlement at the crest of the earth embankment.展开更多
1 Introduction Shale formations bear abundant mineral resource and*unconventional petroleum resource,and the unconventional petroleum resource that contain in the shale formation should be integrated and researched.
With the artificial alder and cypress mixed forest being planted, there has been a marked land use change since 1970s' in Hilly Area of Central Sichuan Basin, China. Data from meteorological observations or posts ...With the artificial alder and cypress mixed forest being planted, there has been a marked land use change since 1970s' in Hilly Area of Central Sichuan Basin, China. Data from meteorological observations or posts operated over long time, measurement and calculation of NPP (net primary production) and biomass of biological community, and analysis of soil organic matter content show that the artificial alder and cypress mixed forest has outstanding eco-environmental effect: adjusting local climate, raising soil fertility, alleviating menace of drought, and raising NPP and biomass of biological community. It is very beneficial for improving ecological environment to afforest artificial alder and cypress mixed forest in populous Hilly Area of Central Sichuan Basin, China. Key Words: land use/land cover change (LUCC); eco-environmental effect; Hilly Area of Central Sichuan Basin; the artificial alder and cypress mixed forest展开更多
Shale oil occurs in free state （including condensate state）, adsorption state （adsorbed on kerogen and mineral particles） and dissolved state （dissolved in natural gas, residual water, etc.） in shales and adjace...Shale oil occurs in free state （including condensate state）, adsorption state （adsorbed on kerogen and mineral particles） and dissolved state （dissolved in natural gas, residual water, etc.） in shales and adjacent layers. The characterization of the occurrence of different hydrocarbons in shale oil, especially the quantitative separation of free hydrocarbons （mobile oil）, has been the current focus of shale oil research. Taken the shale oil from the Muli coalfield in Qilian Mountain as an example, this work extracted shale samples with organic solvents of different polarity to obtain different occurrence states of hydrocarbons in the oil-bearing shale and to reveal the compositional differences of the hydrocarbons. The result may provide new geochemical information for the occurrence and mobility of shale oil.展开更多
This paper reports the application of pulse discharges along with catalysts in treat- ing the exhaust gas at higher temperatures. In the present work a plasma reactor, filled with catalysts, called as plasma catalytic...This paper reports the application of pulse discharges along with catalysts in treat- ing the exhaust gas at higher temperatures. In the present work a plasma reactor, filled with catalysts, called as plasma catalytic reactor, is studied for removal of oxides of nitrogen, total hydrocarbons and carbon monoxide. The experiments are conducted on an actual diesel engine exhaust at no-load and at different temperatures starting from room temperature to 300°C. The removal efficiencies of these pollutants are studied. The experiments are carried out with both con- ventional and non-conventional catalysts. The idea is to explore the pollutant removal efficiency characteristics by non-conventional catalysts. The efficiency results are compared with that of conventional catalysts. The experiments are carried out at a constant pulse repetition rate of 120 pps. Both pellet and honeycomb type catalysts are used in the study.展开更多
This article investigates in detail the structure, genesis and development of parallel-type warm sector rainbands from radar observations. By comparing these observations with diagnostic results from temperature, pres...This article investigates in detail the structure, genesis and development of parallel-type warm sector rainbands from radar observations. By comparing these observations with diagnostic results from temperature, pressure, moisture and wind data, which are both actually observed and numerically generated by a mesoscale model, and the theory of symmetric instability, it is found that the conditional symmetric instability might be responsible for the formation and development of these rainbands.展开更多
Wooden furniture production consumes a lot of forest resource and other resources,so it is important to estimate its environmental effect.In this research,we collected data in a sofa factory of China and appraised its...Wooden furniture production consumes a lot of forest resource and other resources,so it is important to estimate its environmental effect.In this research,we collected data in a sofa factory of China and appraised its environment impacts by the ecological footprint(EF)methodology.The results showed that the total EF of the sofa factory was 2316.25 gha/year(gha:global hectare).The average EF of a sofa was 0.18 gha/year.For the total EF of the sofa factory,main contribution came from wooden materials(55%),followed by non-wooden materials(41.26%),and these two categories contributed above 96% of the total EF.Human labor accounted for 2.21% of the total footprint.The built land and water contributed a little to the total EF.For the total EF of the wooden materials,main contribution came from wood beams(57.6%),followed by plywood(41.08%);and for the total EF of the non-wooden materials,main contribution came from sponge(95.37%).In the end,we concluded that the incorporate of recycled wooden material and reused sponge in the sofa production could be viewed as an important strategy to achieve more sustainable manufacturing.展开更多
At present, internal rural tourism is at the stage of upgrading and renewing, and ecotourism has been considered to be the main direction. This paper discussed the concepts and criteria of rural tourism and ecotourism...At present, internal rural tourism is at the stage of upgrading and renewing, and ecotourism has been considered to be the main direction. This paper discussed the concepts and criteria of rural tourism and ecotourism, analyzed a typical case of Nongke Village of Chengdu City-being considered to be the first rural tourism site in China, went deep into the problems of the contents and criteria of the development of rural ecotourism, and tried to probe into the principles of the development of rural ecotourism both theoretically and practically so as to understand the rules of the development of rural ecotourism .展开更多
Objective Oil and gas are abundant in the Ordovician Yingshan Formation carbonate karst reservoirs on the northern slope of Tazhong uplift in the Tarim Basin, and have extremely complicated oil-gas-water distribution...Objective Oil and gas are abundant in the Ordovician Yingshan Formation carbonate karst reservoirs on the northern slope of Tazhong uplift in the Tarim Basin, and have extremely complicated oil-gas-water distribution, however. The difference in burial depth of the reservoirs between east and west sides is up to 1000 m. Water-bearing formations exist between oil- and gas-bearing formations vertically and water-producing wells are drilled between oil- and gas-producing wells. Macroscopically, oil and gas occur at low positions, while water occurs at high positiona on the northern slope of Tazhong uplift. The mechanism of differential hydrocarbon enrichment in heterogeneous reservoirs is by far not clarified, which has affected the efficient exploration and development of oil and gas fields in this area.展开更多
<span style="font-family:Verdana;">Background and Purpose: Plantar Fasciitis (PF) is a condition that affects the foot and causes complaints such as pain and stiffness. The most common symptom of this ...<span style="font-family:Verdana;">Background and Purpose: Plantar Fasciitis (PF) is a condition that affects the foot and causes complaints such as pain and stiffness. The most common symptom of this condition is pain. There are many treatment options to deal with this condition, such as conservative therapy, medications</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and surgical interventions in rare cases. This case study aims to investigate the potential impact of pain neuroscience education (PNE), combined with a conventional Physical Therapy (PT) program on a 37-year-old-patient with chronic plantar fasciitis. Case description: A 37-year-old male health care professional presented to an outpatient physical therapy clinic with a diagnosis of chronic PF for around two years. The participant had tried several treatment options with no improvement of his symptoms. After undergoing a physical therapy evaluation, he was given a plan of care for twelve sessions by a skilled physical therapist for a six-week period, with each session consisting of 30 minutes of conventional PT, followed by 5 to 15 minutes of PNE. Results: After completing the prescribed plan of care, the patient reported </span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">reduction in subjective symptoms via the Visual Analog Scale (VAS). He also reported improvement with symptoms and functional independence via the Foot Function Index (FFI). The patient reported no change in </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">quality of sleep via Pittsburg Sleep Quality Index (PSQI). Lastly, he demonstrated no objective improvement in foot pressure with the Navicular Drop Test. Discussion: This case report indicates that PNE, combined with conventional PT for PF can have a positive impact on subjective pain and foot function. PNE should involve many topics about the physiology of pain and the nervous system and should be administered by a certified therapeutic pain specialist. Further studies are recommended to investigate the impact of this intervention in combination with traditional PT for PF in larger populations.</span>展开更多
文摘In the award-winning and widely-acclaimed fictional novel,The Vegetarian,the author,Han Kang,relates a compelling and dramatic story of inexorable psychotic deterioration from the perspective of a tragically affected young woman and her close family members.Apart from a variety of interpretations of psychosis from historical,social,psychological,and feminist perspectives,the book also presents a detailed and realistic picture of objective psychotic symptoms that reveals insights into historic and nearly forgotten phenomenological concepts.In this literary case study,we analyze the symptoms remarkably described by the author and briefly review the medical literature on the phenomena of catatonia,schizophrenic autism,paragnomen and the praecox-feeling.
基金supported in part by the European Regional Development Fund under Grant KK.01.1.1.01.0009(DATACROSS).
文摘This paper deals with reduction of losses in electric power distribution system through a dynamic reconfiguration case study of a grid in the city of Mostar,Bosnia and Herzegovina.The proposed solution is based on a nonlinear model predictive control algorithm which determines the optimal switching operations of the distribution system.The goal of the control algorithm is to find the optimal radial network topology which minimizes cumulative active power losses and maximizes voltages across the network while simultaneously satisfying all system constraints.The optimization results are validated through multiple simulations(using real power demand data collected for a few characteristic days during winter and summer)which demonstrate the efficiency and usefulness of the developed control algorithm in reducing the grid losses by up to 14%.
文摘Introductory courses in vocational education play a foundational role in orienting first-year students to their chosen major and initiating their professional formation.Such courses help newcomers establish a cognitive map of the discipline,plan learning pathways,and cultivate identification with the profession,while also serving as a vehicle for integrating ideological-political education.In practice,however,many programs face persistent challenges in textbook development,faculty capacity,curriculum content,and alignment with industry standards,which limit the effectiveness of these courses.With the rollout of national policies such as the Implementation Plan for National Vocational Education Reform,the urgency of strengthening the construction of introductory courses has become increasingly evident.Using the textbook Introduction to Virtual Reality Applications:Cognition,Skills,and Career as a core case,this paper analyzes innovative practices in writing philosophy,course design,school-enterprise collaboration,resource integration,ideological-political infusion,and practical outcomes.Building on this analysis,the paper proposes strategies for reforming introductory courses and building coherent textbook systems in vocational education so as to improve course quality and better support students’professional development.
基金supported by the National Natural Science Foundation of China(52274085).
文摘Coal bursts pose significant safety and operational challenges in deep mining environments,necessitating effective mitigation strategies to address high-stress concentrations and dynamic failure risks.This study evaluated the efficacy of hydraulic fracturing as a preconditioning tool at a longwall face of the Mengcun coal mine with strong coal bursts,Shaanxi Province.The program involved the systematic creation of a fracture network through high-pressure fluid injection,monitored via microseismic arrays,stress measurements,and hydrological sensors.Results demonstrated that hydraulic fracturing effectively redistributed in-situ stresses,reducing high-stress concentrations by up to 30%,lowering the frequency of high-energy microseismic events,and enhancing the stability of fractured zones.However,the presence of unfractured blind spots and interactions with pre-existing faults highlighted the need for optimized well placement and adaptive fracturing designs.These findings underscore the potential of hydraulic fracturing as a critical preconditioning tool in high-stress mining operations,which could provide a framework for improving safety and efficiency in similar geological and operational settings.
基金National Administration of Traditional Chinese Medicine high-level key discipline construction project on Ethnic Minority Medicine(Zhuang Medicine)(Project No.:zyyzdxk-2023164)Guangxi Higher Education Key Laboratory for Research on Toxin-related Diseases in Zhuang Medicine(Guijiao Keyan[2022]No.10).
文摘As an important branch of traditional medicine,Zhuang Medicine is renowned for its unique prescriptions and techniques in clinical treatment,with significant therapeutic effects and widespread popularity.This article introduces Professor Fang Gang’s experience in treating obesity-type polycystic ovary syndrome(PCOS)with modified Zhuang Medicine Mao Xia Yin.Professor Fang Gang proposes that the etiology and pathogenesis of obesity-type polycystic ovary syndrome(PCOS)primarily stem from spleen deficiency,which impairs the transport of water and dampness.This dysfunction leads to the accumulation of dampness that transforms into phlegm.Over time,the stagnation of phlegm and dampness generates internal heat,resulting in the formation of“dampness toxin,”“phlegm toxin,”and“heat toxin.”These pathological toxins obstruct the circulation of Qi and blood,causing stasis and the emergence of“stasis toxin.”The buildup of these toxins ultimately blocks the three channels and two pathways,disrupting the harmony among the three Qi of heaven,earth,and man.This disharmony culminates in impaired uterine gland function.Therefore,the treatment mainly focuses on tonifying deficiency,detoxifying,and regulating Qi.
基金Supported by Jiangsu Agricultural Science and Technology Independent Innovation(CX(13)5016)Jiangsu Social Science Research Subject(13SQC-002)~~
文摘The research reviewed the concept of family farm and analyzed family farm types including unified, facility rental-oriented, employment-oriented, circular and grain＆oil based family farms, as well as corresponding demands in technology and policies. Based on the analysis, the research proposed countermeasures and suggestions. It is necessary to define the range and scale on family farm before giving policy supports. It is important to establish access system of industry and commerce capital to rural areas to guarantee the operators in need be benefited from national preferential policies. Meanwhile, new system on land transfer should be established to guarantee security system for family farm, improve socialized service system and promote government-built production facilities operated by farmers.
基金supported by the Major State Basic Research Development Program of China(G1999043309)the National Natural Science Foundation of China grant 49973001.
文摘Based on a set of equations established by Duan et al. (1992, 1996) for a geofluid system H2O-CO2-CH4(-N2), a formula is obtained to calculate the heat changes. Combining the geological T-P conditions (geothermal gradients and lithostatic and hydrostatic pressures), the enthalpy of some typical geofluids is figured out. Then the principles of heat transfer of deep-derived supercritical fluids are discussed. The result shows that deep-derived geofluids can bring a large amount of thermal heat and release most heat to the shallow surroundings as they move up, because the molar enthalpies vary very greatly from the deep to shallow, increasing with the increases of T and P. Generally, more than tens of kilojoules heat per molar can be released. Furthermore, the molar enthalpy is affected by the compositions of the geofluids, and the molar enthalpy of CO2, CH4, or N2 is greater than that of H2O, being twice, more than twice, and about 140% of H2O, respectively. Finally, a case study is conducted by investigating a source rock sequence affected hydrothermally by magmatic fluids in the Huimin depression of Shengli Oilfield. The thermal heat calculated theoretically of the fluids related to a diabase intrusion is quite large, which can increase the temperature near the diabase to about 300℃, and that can, to some extent, account for the abnormal rise of the vitrinite reflectance, with the highest of about 3.8% (Ro).
基金National Natural Science Foundation of China under Grant No.51438002the research fund of Jiangsu Province Key Laboratory of Structure Engineering,China under Grant No.ZD1803+3 种基金Natural Science Foundation of Suzhou University of Science and Technology under Grant No.XKQ2018008Natural Science Foundation of Jiangsu Higher Education Institutions of China under Grant No.19KJB560021Science and Technology Project of Jiangsu Construction System under Grant No.2020ZD07Priority Academic Program Development of Jiangsu Higher Education Institutions。
文摘Model updating issues with high-dimensional and strong-nonlinear optimization processes are still unsolved by most optimization methods.In this study,a hybrid methodology that combines the Gaussian-white-noise-mutation particle swarm optimization(GMPSO),back-propagation neural network(BPNN)and Latin hypercube sampling(LHS)technique is proposed.In this approach,as a meta-heuristic algorithm with the least modification to the standard PSO,GMPSO simultaneously offers convenient programming and good performance in optimization.The BPNN with LHS establishes the meta-models for FEM to accelerate efficiency during the updating process.A case study of the model updating of an actual bridge with no distribution but bounded parameters was carried out using this methodology with two different objective functions.One considers only the frequencies of the main girder and the other considers both the frequencies and vertical displacements of typical points.The updating results show that the methodology is a sound approach to solve an actual complex bridge structure and offers good agreement in the frequencies and mode shapes of the updated model and test data.Based on the shape comparison of the main girder at the finished state with different objective functions,it is emphasized that both the dynamic and static responses should be taken into consideration during the model updating process.
基金Projects (40802070, 40841014) supported by the National Natural Science Foundation of ChinaProject (B308) supported by Shanghai Leading Academic Discipline Project, China
文摘A case study of seismic response of an earth embankment foundation on liquefiable soils in Kansai area,western Japan was presented. Based on a calibrated cyclic elasto-plastic constitutive model for liquefiable sand and Biot dynamic coupled theory,the seismic analysis was carried out by using a dynamic effective stress finite element method under plane strain condition. A recent design study was illustrated in detail for a river earth embankment subjected to seismic excitation on the saturated deposits with liquefiable sands. Simulated results of the embankment foundation during liquefaction were obtained for acceleration,displacement,and excess pore water pressures,which were considered to yield useful results for earthquake geotechnical design. The results show that the foundation soil reaches a fully liquefied state with high excess pore pressure ratios approaching to 1.0 due to the earthquake shaking. At the end of the earthquake,the extensive liquefaction causes about 1.0 m lateral spreading at the toe and 60 cm settlement at the crest of the earth embankment.
基金supported by funding the National Basic Research Program of China (973 Program) and the grant number is 2014CB239000
文摘1 Introduction Shale formations bear abundant mineral resource and*unconventional petroleum resource,and the unconventional petroleum resource that contain in the shale formation should be integrated and researched.
基金Supported by the Knowledge Innovation Program of Chinese Academy of Sciences(KZCX1-SW-01-01B)Cultivatlon Foundation of Institute of Mountain Hazards and Environment,CAS
文摘With the artificial alder and cypress mixed forest being planted, there has been a marked land use change since 1970s' in Hilly Area of Central Sichuan Basin, China. Data from meteorological observations or posts operated over long time, measurement and calculation of NPP (net primary production) and biomass of biological community, and analysis of soil organic matter content show that the artificial alder and cypress mixed forest has outstanding eco-environmental effect: adjusting local climate, raising soil fertility, alleviating menace of drought, and raising NPP and biomass of biological community. It is very beneficial for improving ecological environment to afforest artificial alder and cypress mixed forest in populous Hilly Area of Central Sichuan Basin, China. Key Words: land use/land cover change (LUCC); eco-environmental effect; Hilly Area of Central Sichuan Basin; the artificial alder and cypress mixed forest
基金funded by the Science and Technology Innovation Fund of Petro China(grant No.2014D-5006-0105)the National Natural Science Foundation of China(grant No.41273066)
文摘Shale oil occurs in free state （including condensate state）, adsorption state （adsorbed on kerogen and mineral particles） and dissolved state （dissolved in natural gas, residual water, etc.） in shales and adjacent layers. The characterization of the occurrence of different hydrocarbons in shale oil, especially the quantitative separation of free hydrocarbons （mobile oil）, has been the current focus of shale oil research. Taken the shale oil from the Muli coalfield in Qilian Mountain as an example, this work extracted shale samples with organic solvents of different polarity to obtain different occurrence states of hydrocarbons in the oil-bearing shale and to reveal the compositional differences of the hydrocarbons. The result may provide new geochemical information for the occurrence and mobility of shale oil.
文摘This paper reports the application of pulse discharges along with catalysts in treat- ing the exhaust gas at higher temperatures. In the present work a plasma reactor, filled with catalysts, called as plasma catalytic reactor, is studied for removal of oxides of nitrogen, total hydrocarbons and carbon monoxide. The experiments are conducted on an actual diesel engine exhaust at no-load and at different temperatures starting from room temperature to 300°C. The removal efficiencies of these pollutants are studied. The experiments are carried out with both con- ventional and non-conventional catalysts. The idea is to explore the pollutant removal efficiency characteristics by non-conventional catalysts. The efficiency results are compared with that of conventional catalysts. The experiments are carried out at a constant pulse repetition rate of 120 pps. Both pellet and honeycomb type catalysts are used in the study.
文摘This article investigates in detail the structure, genesis and development of parallel-type warm sector rainbands from radar observations. By comparing these observations with diagnostic results from temperature, pressure, moisture and wind data, which are both actually observed and numerically generated by a mesoscale model, and the theory of symmetric instability, it is found that the conditional symmetric instability might be responsible for the formation and development of these rainbands.
基金Supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF(CAFYBB2019MB002)State Forestry Administration of the People’s Republic of China(2015-R04)。
文摘Wooden furniture production consumes a lot of forest resource and other resources,so it is important to estimate its environmental effect.In this research,we collected data in a sofa factory of China and appraised its environment impacts by the ecological footprint(EF)methodology.The results showed that the total EF of the sofa factory was 2316.25 gha/year(gha:global hectare).The average EF of a sofa was 0.18 gha/year.For the total EF of the sofa factory,main contribution came from wooden materials(55%),followed by non-wooden materials(41.26%),and these two categories contributed above 96% of the total EF.Human labor accounted for 2.21% of the total footprint.The built land and water contributed a little to the total EF.For the total EF of the wooden materials,main contribution came from wood beams(57.6%),followed by plywood(41.08%);and for the total EF of the non-wooden materials,main contribution came from sponge(95.37%).In the end,we concluded that the incorporate of recycled wooden material and reused sponge in the sofa production could be viewed as an important strategy to achieve more sustainable manufacturing.
文摘At present, internal rural tourism is at the stage of upgrading and renewing, and ecotourism has been considered to be the main direction. This paper discussed the concepts and criteria of rural tourism and ecotourism, analyzed a typical case of Nongke Village of Chengdu City-being considered to be the first rural tourism site in China, went deep into the problems of the contents and criteria of the development of rural ecotourism, and tried to probe into the principles of the development of rural ecotourism both theoretically and practically so as to understand the rules of the development of rural ecotourism .
基金financially supported by the National Science Foundation of China(grant No.41372146)
文摘Objective Oil and gas are abundant in the Ordovician Yingshan Formation carbonate karst reservoirs on the northern slope of Tazhong uplift in the Tarim Basin, and have extremely complicated oil-gas-water distribution, however. The difference in burial depth of the reservoirs between east and west sides is up to 1000 m. Water-bearing formations exist between oil- and gas-bearing formations vertically and water-producing wells are drilled between oil- and gas-producing wells. Macroscopically, oil and gas occur at low positions, while water occurs at high positiona on the northern slope of Tazhong uplift. The mechanism of differential hydrocarbon enrichment in heterogeneous reservoirs is by far not clarified, which has affected the efficient exploration and development of oil and gas fields in this area.
文摘<span style="font-family:Verdana;">Background and Purpose: Plantar Fasciitis (PF) is a condition that affects the foot and causes complaints such as pain and stiffness. The most common symptom of this condition is pain. There are many treatment options to deal with this condition, such as conservative therapy, medications</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> and surgical interventions in rare cases. This case study aims to investigate the potential impact of pain neuroscience education (PNE), combined with a conventional Physical Therapy (PT) program on a 37-year-old-patient with chronic plantar fasciitis. Case description: A 37-year-old male health care professional presented to an outpatient physical therapy clinic with a diagnosis of chronic PF for around two years. The participant had tried several treatment options with no improvement of his symptoms. After undergoing a physical therapy evaluation, he was given a plan of care for twelve sessions by a skilled physical therapist for a six-week period, with each session consisting of 30 minutes of conventional PT, followed by 5 to 15 minutes of PNE. Results: After completing the prescribed plan of care, the patient reported </span><span style="font-family:Verdana;">a </span><span style="font-family:Verdana;">reduction in subjective symptoms via the Visual Analog Scale (VAS). He also reported improvement with symptoms and functional independence via the Foot Function Index (FFI). The patient reported no change in </span><span style="font-family:Verdana;">the </span><span style="font-family:Verdana;">quality of sleep via Pittsburg Sleep Quality Index (PSQI). Lastly, he demonstrated no objective improvement in foot pressure with the Navicular Drop Test. Discussion: This case report indicates that PNE, combined with conventional PT for PF can have a positive impact on subjective pain and foot function. PNE should involve many topics about the physiology of pain and the nervous system and should be administered by a certified therapeutic pain specialist. Further studies are recommended to investigate the impact of this intervention in combination with traditional PT for PF in larger populations.</span>
