By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discus...By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discussed.Based on the data of building layout,population composition,road system and distribution of shelters in the school,a detailed evacuation model was constructed in the Pathfinder emergency evacuation simulation system.By the simulation during the daytime and at night,the total evacuation time of the whole school,evacuation completion time of each building,selection of evacuation paths and shelter utilization were analyzed in detail.The simulation results show that the distribution of shelters on campus is uneven,and their capacity is limited.As a result,the evacuation paths of the disabled,the elderly and children need to be adjusted frequently,which affects the overall evacuation efficiency.In view of this,the optimization strategies of road renovation and entrances of shelters and buildings were put forward from the perspective of space planning.From the perspective of emergency management,it is suggested to improve the campus evacuation infrastructure and strengthen the evacuation drill for teachers and students.These results provide a solid theoretical support for enhancing the construction of campus barrier-free environment and improving the level of emergency management.展开更多
Digitization of education is an important component of Digital China Strategy. China is deeply implementing the digitalization of education strategy, promoting educational reform and innovation, and accelerating the c...Digitization of education is an important component of Digital China Strategy. China is deeply implementing the digitalization of education strategy, promoting educational reform and innovation, and accelerating the construction of a learning society and a learning country where everyone can learn, learn everywhere, and learn at all times [1]. As the cradle and gathering place of talent cultivation, universities should be at the forefront of educational informatization construction. As a comprehensive energy university in the northeastern region of Sichuan, the Nanchong Campus of Southwest Petroleum University plays an irreplaceable role in the local economic development. This article summarizes the current situation of educational informatization construction on this campus and proposes suggestions for its improvement path, providing constructive reference opinions for the development of similar universities.展开更多
The major phytoplankton was investigated and analyzed in landscape water of six campuses in Nanjing Xianlin University Town,and water quality was evaluated by single factor assessment method and comprehensive weighted...The major phytoplankton was investigated and analyzed in landscape water of six campuses in Nanjing Xianlin University Town,and water quality was evaluated by single factor assessment method and comprehensive weighted evaluation method.The result showed that the major phytoplankton groups were Cyanophyta,Chlorophyta and Bacillariophyta.Besides,each evaluation indicator showed that waterbodies in four campuses were eutrophicated and result of single factor evaluation showed water quality all belonged to poor category V.The result of comprehensive weighted assessment showed that waters in Nanjing Normal University and Nanjing University of Posts and Telecommunications were seriously polluted,cyanobacterial bloom appearing.Waters in Nanjing University of Chinese Medicine and Nanjing Forest Police College hadn't been eutrophicated.展开更多
Through Analytic Hierarchy Process (AHP),landscape in college campus had been studied from three aspects which were humanization,communication atmosphere and visual effect of plant disposition.By taking the first and ...Through Analytic Hierarchy Process (AHP),landscape in college campus had been studied from three aspects which were humanization,communication atmosphere and visual effect of plant disposition.By taking the first and second campus of Sichuan Agricultural University (Ya'an) for example,their landscape qualities had been analyzed and compared.It had established AHP model of college campus landscape quality,designed questionnaire according to relevant established indexes and relation between indexes,and then launched questionnaire survey.After data statistics and chart analysis,based on survey of actual environment,it had obtained advantages and disadvantages of the first and second campus of Sichuan Agricultural University in terms of landscape quality,and studied landscape quality evaluation,so as to provide reference for college campus landscape design that could create appropriate communication environment and cater to psychological and behavior need of college students.展开更多
On the basis of understanding the properties,concepts and objectives of running the school,geographical conditions,historical and cultural context of Baise University,cultural connotations were expressed by landscape ...On the basis of understanding the properties,concepts and objectives of running the school,geographical conditions,historical and cultural context of Baise University,cultural connotations were expressed by landscape elements such as layout of subareas,architecture,plants,sculptures,park-like settings,couplets and carvings.展开更多
Connotations and functions of campus cultural landscapes were elaborated,and campus cultural landscapes were believed to have continuity of culture,subtle educational and encouraging effects on teachers and students.E...Connotations and functions of campus cultural landscapes were elaborated,and campus cultural landscapes were believed to have continuity of culture,subtle educational and encouraging effects on teachers and students.Environment characteristics,construction conditions and cultural landscapes of Huaxi Campus of Chongqing University of Technology were analyzed.On this basis,cultural landscape planning of new campuses was studied,and it was stressed that group functions should be taken as the foundation to highlight spirits and style of the university,and demonstrate characteristics of its disciplines.In this way,campus designs concern more about users,enable students to live and study in a healthy environment,and are able to inherit campus cultures.The study was to improve the present construction of Huaxi Campus,make up deficiencies in the construction of campus cultural landscapes,and enhance campus spirits and comprehensive strength of the university.展开更多
Through investigating vertical greening plants on the campuses of Hainan University,it was found that there are 41 species vertical greening plants with excellent landscape effects,belonging to 36 genera and 20 famili...Through investigating vertical greening plants on the campuses of Hainan University,it was found that there are 41 species vertical greening plants with excellent landscape effects,belonging to 36 genera and 20 families,among which 4 species are shrubs,33 liana and 4 gramineous plants.The current application situation of the vertical greening plants on the campuses was briefly analyzed in this study,and corresponding suggestions were put forward in view of the existing problems.展开更多
Open space is an important part of the campus landscape,and it is the material carrier which can implement the education idea of school.Through the transformation of the campus environment of Southeast University,the ...Open space is an important part of the campus landscape,and it is the material carrier which can implement the education idea of school.Through the transformation of the campus environment of Southeast University,the study analyzes of the concept and attributes of open space on campus,as well as the actual problems which should be noticed.展开更多
In this paper,the overview of Guangxi university for nationalities and its campus green space functions were introduced,the characteristics of campus green space and problems in maintenance management were analyzed,fi...In this paper,the overview of Guangxi university for nationalities and its campus green space functions were introduced,the characteristics of campus green space and problems in maintenance management were analyzed,finally countermeasures to maintenance management of campus green space were proposed.展开更多
Campus landscape as an important campus green space carries such important functions as traffic, learning, communication, recreation, and entertainment. Landscape design of campus green spaces should not only be pract...Campus landscape as an important campus green space carries such important functions as traffic, learning, communication, recreation, and entertainment. Landscape design of campus green spaces should not only be practical and beautiful, but also be able to show the natural and cultural atmosphere of campus, and the charm of the university based on its regional features, ecological environment and historical context. Through further analysis of green space landscape on Haidian Campus of Hainan University,this paper summarized the advantages and disadvantages of its green space landscape, and proposed the strategies for improving campus green space landscape of Hainan University from the perspectives of regionality, ecology and individuality.展开更多
By taking landscape planning of the south side of library on Weiyang Campus,Xi'an Technological University for example,campus landscape planning concepts of ordnance universities were discussed.From the perspectiv...By taking landscape planning of the south side of library on Weiyang Campus,Xi'an Technological University for example,campus landscape planning concepts of ordnance universities were discussed.From the perspective of creating a campus environment with distinctive characteristics of universities,the integration of users and environment and the creation of a beautiful campus cultural environment were stressed.With an overall spatial pattern of "two centers,four axes,infiltration among different functional areas",the planning site was divided into the following 6 subareas:central landscape space,pavement landscape space,garden setting space,waterscape space,ordnance culture demonstration space,teaching and dormitory space.Its road systems and plant landscapes on campus were clearly organized.The authors aimed at providing useful references for the construction of new campuses by studying landscape planning of a part of Weiyang Campus,Xi'an Technological University.展开更多
This study aims to measure traffic-related air pollution of vehicles with internal combustion, the main source of emissions of BTEX, organic compounds and NOx, NO2, NO, O3, CO, SO2, PM10 and PM2.5, inorganic compounds...This study aims to measure traffic-related air pollution of vehicles with internal combustion, the main source of emissions of BTEX, organic compounds and NOx, NO2, NO, O3, CO, SO2, PM10 and PM2.5, inorganic compounds, in three sites of the University campus, surrounded by residential areas. According to the University data, around 8000 students are being exposed daily to the measured level of pollution, in all 3 studied places of campus. A mobile laboratory was used, which continuously measures above mentioned pollutants and mete-orological parameters. The diurnal variation of BTEX, in a sunny and rainy day showed two peaks of BTEX concentration in the morning and evening. In the rainy days, the non-polar (hydrophobic) compounds as BTEX are mechanically trained by rain into the ground, where either they enter into the groundwater, or volatilized and re-enter in the air. Particulate matter such as PM10 and PM2.5 is, in a large part, carried by the rain into the soil. The polar compounds (hydrophilic, NOx, SO2) dissolves in the rainwater and are absorbed in the soil (increasing soil acidity) and evaporated towards the clouds (leading to acid rain). In our study, BTEX compounds removed by the rain varied between 62% - 75%, NOx and SO2, 80% and 77% respectively. Particulate matters were washed out up to 68% for PM10, and 42% for PM2.5. In the sunny days the air pollution with measured concentrations of O3 (121.66 ± 7.02, 123.56 ± 4.89 μg/m3) remained for 7 hours close to the limit value (120 μg/m3). The maximum of solar radiation, with corresponding low concentrations in NOx and xylene, corresponds to photochemical reactions in the atmosphere, generating photochemical smog. In a sunny day and high traffic, we found the maximum value 5.4 μg/m3 for benzene, for 30 min., a known human carcinogen, exceeding the annual limit value de 5 μg/m3. The average background, from benzene, in three University campuses daily visited by around 8000 students was 0.97 μg/m3, exposed to 1.46 μg/m3 and the cancer risk is 1/100,000.展开更多
The butterflies are beautiful creature of nature with great economic importance as pollinator as well as bio-indicator of environments. The present survey was conducted to determine the biology and distribution of but...The butterflies are beautiful creature of nature with great economic importance as pollinator as well as bio-indicator of environments. The present survey was conducted to determine the biology and distribution of butterfly fauna of Hazara University, Garden Campus, Mansehra, Pakistan during March-June 2012. The study area was divided into 3 quadrates, i.e., residential area, administration area and main campus. A total of 170 specimens were collected, 10 species were identified belonging to 3 different families and falling in 8 genera. The species were identified. The painted lady, Cynthia cardui (Linnaeus);blue pansy, Junonia orithya Linnaeus;and plain tiger, Danaus chrysippus (Linnaeus) were belonging to family Nymphalidae. The lime butterfly, Papilio demoleus Linnaeus and com-mon mormon, P. polytes Linnaeus were belonging to family Papilionidae. The dark clouded yellow, Colias croceus (Geoffroy);common grass yellow, Eumera hecab (Linnaeus);Murree green-veined white, Pieris ajaka Moore;green-veined white, P. napi (Linnaeus) and Bath white, Pontia daplidice (Linnaeus) were belonging to family Pieridae. The body sizes of E. hecabe and J. orithya were minimum, i.e., 1.4 cm (n = 4 - 13), however, D. chrysippus was maximum, i.e., 2.5 cm (n = 1). The wingspan of E. hecabe was minimum, i.e., 3.7 cm (n = 4), however, P. polytes was maximum, i.e., 7.5 cm (n = 1). Proper preventive measures should be taken into consideration in order to minimize the natural habitat loss, as butterfly fauna is dependent upon proper environmental conditions.展开更多
The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The ...The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution.展开更多
With the prevalence of COVID-19,the phenomenon of viruses spreading through aerosols has become a focus of attention.Diners in university dining halls have a high risk of exposure to respiratory droplets from others w...With the prevalence of COVID-19,the phenomenon of viruses spreading through aerosols has become a focus of attention.Diners in university dining halls have a high risk of exposure to respiratory droplets from others without the protection of face masks,which greatly increases the risk of COVID-19 transmission.Therefore,the transmission mechanism of respiratory droplets in extremely crowded dining environments should be investigated.In this study,a numerical simulation of coughing at dining tables under two conditions was performed,namely the presence and absence of protective partitions,and the evaporation and condensation of aerosol droplets in the air were examined.By using the numerical method,we analyzed and verified the isolation effect of dining table partitions in the propagation of aerosol droplets.The effect of changes in room temperature on the diffusion of coughed aerosols when partitions were present was analyzed.We demonstrated how respiratory droplets spread through coughing and how these droplets affect others.Finally,we proposed a design for a dining table partition that minimizes the transmission of COVID-19.展开更多
Several studies have shown a positive relationship between high quality outdoor environments and users’health.Education of agricultural professionals also demands high quality outdoor environments in order to promote...Several studies have shown a positive relationship between high quality outdoor environments and users’health.Education of agricultural professionals also demands high quality outdoor environments in order to promote students’wellbeing,which in turn supports scientific researches.This study analyzed relationship between students’actual uses and campus outdoor environments,identified what environmental characteristics that students prefered,how they used and why they participated in the outdoor activities.The results could be used as guidance of campus design and management.Investigation of three universities in Harbin provided 686 valid questionnaires.The results suggested that health awareness effectively promoted students’use frequencies of outdoor environments.Environment with"natural"and"cultural"characteristics,especially undulating landform,vibrant plants and landmarks in a serpentins design style attracted more uses.Female students showed more preferences on social interaction activities than males.Students who had good economic consumption levels and participated in outdoor activities frequntly in childhood prefered to join all the kinds of activities after university enrollment.展开更多
Energy consumption increases with intensity of human activities. People consume energy for movement and other activities and the more fossil-fuel based energy used, the more carbon dioxide (CO2) emission. Since carbon...Energy consumption increases with intensity of human activities. People consume energy for movement and other activities and the more fossil-fuel based energy used, the more carbon dioxide (CO2) emission. Since carbon dioxide is the major element of the greenhouse gases (GHG), this phenomenon has a serious implication for global warming and consequent climate change—a scenario that calls for sustainable development. This research considers the emission of CO2 from energy use within the campus of Universiti Teknologi Malaysia. Two major sources of energy consumption were identified, namely: electricity and transport. The emission for electricity was estimated based on electricity meter reading and the conversion rate in accordance with the stand-ardized conversion factors for fuel mix of the purchased electric energy as given by PTM (Pusat Tenaga Malaysia), while the associated CO2 emission for transport was estimated based on the number of miles driven (VMT—Vehicle Miles Travel) within the campus, emissions produced per litre of gasoline, and fuel economy of vehicles plying the campus in line with the Code of Federal Regulations USEPA and consistent with the Inter-governmental Panel on Climate Change (IPCC) guidelines. It was observed that high CO2 emission resulted from electricity energy consumption, and the highest emission in the transport sector was produced by commuting vehicles while emission from service delivery for cooling, lighting and other equipment was similar to national average.展开更多
This paper, by introducing the conception of planning scheme of Zijingang West Campus of Zhejiang University, expounds how to integrate the traditional "human landscape" spirit into the planning and design o...This paper, by introducing the conception of planning scheme of Zijingang West Campus of Zhejiang University, expounds how to integrate the traditional "human landscape" spirit into the planning and design of the modern campus, so as to create a personalized campus where cultural traditions are complementary to natural atmosphere. In this paper, with the campus planning and design as an extension as well as the blending and symbiosis between urban historical culture and natural scenery as the focus of attention, the Chinese thinking pattern stressing prefect harmony and in-depth dialogue between culture and nature is expected to be applied to the construction of modern cities to build and improve the "Shanshui city" planning system so that the planning concept that Chinese thought, "unity of man and nature", is used to build modern cities is carried forward.展开更多
The study was undertaken to assess the extent of mercury contamination in the soil and three types of leaf plants in Campus AL-Mustansaryah University sites within Baghdad, Iraq, as well as to determine the relationsh...The study was undertaken to assess the extent of mercury contamination in the soil and three types of leaf plants in Campus AL-Mustansaryah University sites within Baghdad, Iraq, as well as to determine the relationship between environmental parameters and the distribution of the mercury contamination with carbon in soil samples were collected and analyzed for inorganic mercury. The highest mercury concentrations were recorded at the sites located lowest cover the plant and close to the diesel-electric generators. Mercury concentrations in leaf plant Ziziphusspina-christi higher concentration than the rest type and soil were mostly higher mercury concentration. Also ratio of carbon to coincide with the increase in the concentration of mercury in the soil of the study areas. Mercury is more biologically because of his preference to bind with carbon. This research confirms that Campus University is key areas for formation of bioavailable mercury distribution is tied to organic carbon.展开更多
基金Sponsored by the Innovation and Entrepreneurship Training Project for College Students in Beijing(10805136024-XN139-100)Scientific Research Foundation of North China University of Technology(11005136024XN147-56).
文摘By using evacuation simulation technology and taking North China University of Technology as an example,the barrier-free evacuation design scheme for groups with different needs in campus environment was deeply discussed.Based on the data of building layout,population composition,road system and distribution of shelters in the school,a detailed evacuation model was constructed in the Pathfinder emergency evacuation simulation system.By the simulation during the daytime and at night,the total evacuation time of the whole school,evacuation completion time of each building,selection of evacuation paths and shelter utilization were analyzed in detail.The simulation results show that the distribution of shelters on campus is uneven,and their capacity is limited.As a result,the evacuation paths of the disabled,the elderly and children need to be adjusted frequently,which affects the overall evacuation efficiency.In view of this,the optimization strategies of road renovation and entrances of shelters and buildings were put forward from the perspective of space planning.From the perspective of emergency management,it is suggested to improve the campus evacuation infrastructure and strengthen the evacuation drill for teachers and students.These results provide a solid theoretical support for enhancing the construction of campus barrier-free environment and improving the level of emergency management.
文摘Digitization of education is an important component of Digital China Strategy. China is deeply implementing the digitalization of education strategy, promoting educational reform and innovation, and accelerating the construction of a learning society and a learning country where everyone can learn, learn everywhere, and learn at all times [1]. As the cradle and gathering place of talent cultivation, universities should be at the forefront of educational informatization construction. As a comprehensive energy university in the northeastern region of Sichuan, the Nanchong Campus of Southwest Petroleum University plays an irreplaceable role in the local economic development. This article summarizes the current situation of educational informatization construction on this campus and proposes suggestions for its improvement path, providing constructive reference opinions for the development of similar universities.
基金Supported by National Foundation for Fostering Talents in Basic Science(J0730650)~~
文摘The major phytoplankton was investigated and analyzed in landscape water of six campuses in Nanjing Xianlin University Town,and water quality was evaluated by single factor assessment method and comprehensive weighted evaluation method.The result showed that the major phytoplankton groups were Cyanophyta,Chlorophyta and Bacillariophyta.Besides,each evaluation indicator showed that waterbodies in four campuses were eutrophicated and result of single factor evaluation showed water quality all belonged to poor category V.The result of comprehensive weighted assessment showed that waters in Nanjing Normal University and Nanjing University of Posts and Telecommunications were seriously polluted,cyanobacterial bloom appearing.Waters in Nanjing University of Chinese Medicine and Nanjing Forest Police College hadn't been eutrophicated.
文摘Through Analytic Hierarchy Process (AHP),landscape in college campus had been studied from three aspects which were humanization,communication atmosphere and visual effect of plant disposition.By taking the first and second campus of Sichuan Agricultural University (Ya'an) for example,their landscape qualities had been analyzed and compared.It had established AHP model of college campus landscape quality,designed questionnaire according to relevant established indexes and relation between indexes,and then launched questionnaire survey.After data statistics and chart analysis,based on survey of actual environment,it had obtained advantages and disadvantages of the first and second campus of Sichuan Agricultural University in terms of landscape quality,and studied landscape quality evaluation,so as to provide reference for college campus landscape design that could create appropriate communication environment and cater to psychological and behavior need of college students.
基金Sponsored by S & T Cooperation Project of Guangzhou University and Baise University in 2010 (GBK2010001)~~
文摘On the basis of understanding the properties,concepts and objectives of running the school,geographical conditions,historical and cultural context of Baise University,cultural connotations were expressed by landscape elements such as layout of subareas,architecture,plants,sculptures,park-like settings,couplets and carvings.
文摘Connotations and functions of campus cultural landscapes were elaborated,and campus cultural landscapes were believed to have continuity of culture,subtle educational and encouraging effects on teachers and students.Environment characteristics,construction conditions and cultural landscapes of Huaxi Campus of Chongqing University of Technology were analyzed.On this basis,cultural landscape planning of new campuses was studied,and it was stressed that group functions should be taken as the foundation to highlight spirits and style of the university,and demonstrate characteristics of its disciplines.In this way,campus designs concern more about users,enable students to live and study in a healthy environment,and are able to inherit campus cultures.The study was to improve the present construction of Huaxi Campus,make up deficiencies in the construction of campus cultural landscapes,and enhance campus spirits and comprehensive strength of the university.
文摘Through investigating vertical greening plants on the campuses of Hainan University,it was found that there are 41 species vertical greening plants with excellent landscape effects,belonging to 36 genera and 20 families,among which 4 species are shrubs,33 liana and 4 gramineous plants.The current application situation of the vertical greening plants on the campuses was briefly analyzed in this study,and corresponding suggestions were put forward in view of the existing problems.
文摘Open space is an important part of the campus landscape,and it is the material carrier which can implement the education idea of school.Through the transformation of the campus environment of Southeast University,the study analyzes of the concept and attributes of open space on campus,as well as the actual problems which should be noticed.
文摘In this paper,the overview of Guangxi university for nationalities and its campus green space functions were introduced,the characteristics of campus green space and problems in maintenance management were analyzed,finally countermeasures to maintenance management of campus green space were proposed.
基金Sponsored by 2016 Graduates’ Practice Innovation Program of Hainan University,Youth Fund of Hainan University(QNJJ1249)
文摘Campus landscape as an important campus green space carries such important functions as traffic, learning, communication, recreation, and entertainment. Landscape design of campus green spaces should not only be practical and beautiful, but also be able to show the natural and cultural atmosphere of campus, and the charm of the university based on its regional features, ecological environment and historical context. Through further analysis of green space landscape on Haidian Campus of Hainan University,this paper summarized the advantages and disadvantages of its green space landscape, and proposed the strategies for improving campus green space landscape of Hainan University from the perspectives of regionality, ecology and individuality.
文摘By taking landscape planning of the south side of library on Weiyang Campus,Xi'an Technological University for example,campus landscape planning concepts of ordnance universities were discussed.From the perspective of creating a campus environment with distinctive characteristics of universities,the integration of users and environment and the creation of a beautiful campus cultural environment were stressed.With an overall spatial pattern of "two centers,four axes,infiltration among different functional areas",the planning site was divided into the following 6 subareas:central landscape space,pavement landscape space,garden setting space,waterscape space,ordnance culture demonstration space,teaching and dormitory space.Its road systems and plant landscapes on campus were clearly organized.The authors aimed at providing useful references for the construction of new campuses by studying landscape planning of a part of Weiyang Campus,Xi'an Technological University.
文摘This study aims to measure traffic-related air pollution of vehicles with internal combustion, the main source of emissions of BTEX, organic compounds and NOx, NO2, NO, O3, CO, SO2, PM10 and PM2.5, inorganic compounds, in three sites of the University campus, surrounded by residential areas. According to the University data, around 8000 students are being exposed daily to the measured level of pollution, in all 3 studied places of campus. A mobile laboratory was used, which continuously measures above mentioned pollutants and mete-orological parameters. The diurnal variation of BTEX, in a sunny and rainy day showed two peaks of BTEX concentration in the morning and evening. In the rainy days, the non-polar (hydrophobic) compounds as BTEX are mechanically trained by rain into the ground, where either they enter into the groundwater, or volatilized and re-enter in the air. Particulate matter such as PM10 and PM2.5 is, in a large part, carried by the rain into the soil. The polar compounds (hydrophilic, NOx, SO2) dissolves in the rainwater and are absorbed in the soil (increasing soil acidity) and evaporated towards the clouds (leading to acid rain). In our study, BTEX compounds removed by the rain varied between 62% - 75%, NOx and SO2, 80% and 77% respectively. Particulate matters were washed out up to 68% for PM10, and 42% for PM2.5. In the sunny days the air pollution with measured concentrations of O3 (121.66 ± 7.02, 123.56 ± 4.89 μg/m3) remained for 7 hours close to the limit value (120 μg/m3). The maximum of solar radiation, with corresponding low concentrations in NOx and xylene, corresponds to photochemical reactions in the atmosphere, generating photochemical smog. In a sunny day and high traffic, we found the maximum value 5.4 μg/m3 for benzene, for 30 min., a known human carcinogen, exceeding the annual limit value de 5 μg/m3. The average background, from benzene, in three University campuses daily visited by around 8000 students was 0.97 μg/m3, exposed to 1.46 μg/m3 and the cancer risk is 1/100,000.
文摘The butterflies are beautiful creature of nature with great economic importance as pollinator as well as bio-indicator of environments. The present survey was conducted to determine the biology and distribution of butterfly fauna of Hazara University, Garden Campus, Mansehra, Pakistan during March-June 2012. The study area was divided into 3 quadrates, i.e., residential area, administration area and main campus. A total of 170 specimens were collected, 10 species were identified belonging to 3 different families and falling in 8 genera. The species were identified. The painted lady, Cynthia cardui (Linnaeus);blue pansy, Junonia orithya Linnaeus;and plain tiger, Danaus chrysippus (Linnaeus) were belonging to family Nymphalidae. The lime butterfly, Papilio demoleus Linnaeus and com-mon mormon, P. polytes Linnaeus were belonging to family Papilionidae. The dark clouded yellow, Colias croceus (Geoffroy);common grass yellow, Eumera hecab (Linnaeus);Murree green-veined white, Pieris ajaka Moore;green-veined white, P. napi (Linnaeus) and Bath white, Pontia daplidice (Linnaeus) were belonging to family Pieridae. The body sizes of E. hecabe and J. orithya were minimum, i.e., 1.4 cm (n = 4 - 13), however, D. chrysippus was maximum, i.e., 2.5 cm (n = 1). The wingspan of E. hecabe was minimum, i.e., 3.7 cm (n = 4), however, P. polytes was maximum, i.e., 7.5 cm (n = 1). Proper preventive measures should be taken into consideration in order to minimize the natural habitat loss, as butterfly fauna is dependent upon proper environmental conditions.
基金Supported by the"13th Five-year"Science and Technology Research Item of Jilin Education Department(Jijiaokehezi[2016]531)Student's Platform for Innovation and Entrepreneurship Training Program in Jilin Province in 2017(3430)
文摘The pollution situation of different underlying surface and the change rule of each water quality index were researched,on the basis of rainwater quality monitoring by different approaches in a university campus. The results showed that due to some factors,such as the underlying surface material pollution,road materials,road surface pollution condition and surrounding atmospheric environment quality,the pollution of different underlying surface rainwater would be different. Main pollutants of rainwater runoff in the city campus area were such as COD,SS,NH;-N,TP,etc. Ultimately,along with the increase of accumulated rainfall,the pollutants tended to gradually decrease. The road rain pollution was more serious than roof runoff pollution and the early rain pollution was serious,but the late rain water quality was much better. According to the rainwater conditions,subsequent rainwater recycling technology and processing technology were determined as a way to alleviate the problem of water shortage and water pollution.
基金the National Natural Science Foundation of China(11872353,91852102)the Natural Science Foundation of Zhejiang Province(LZ22A020004)。
文摘With the prevalence of COVID-19,the phenomenon of viruses spreading through aerosols has become a focus of attention.Diners in university dining halls have a high risk of exposure to respiratory droplets from others without the protection of face masks,which greatly increases the risk of COVID-19 transmission.Therefore,the transmission mechanism of respiratory droplets in extremely crowded dining environments should be investigated.In this study,a numerical simulation of coughing at dining tables under two conditions was performed,namely the presence and absence of protective partitions,and the evaporation and condensation of aerosol droplets in the air were examined.By using the numerical method,we analyzed and verified the isolation effect of dining table partitions in the propagation of aerosol droplets.The effect of changes in room temperature on the diffusion of coughed aerosols when partitions were present was analyzed.We demonstrated how respiratory droplets spread through coughing and how these droplets affect others.Finally,we proposed a design for a dining table partition that minimizes the transmission of COVID-19.
基金Supported by the Natural Fund Project of Heilongjiang Province(E2018009)Heilongjiang Higher Education Teaching Reform Project(SJGY20170111)Great Northern Agricultural Scholar Program(SBJY 17024)。
文摘Several studies have shown a positive relationship between high quality outdoor environments and users’health.Education of agricultural professionals also demands high quality outdoor environments in order to promote students’wellbeing,which in turn supports scientific researches.This study analyzed relationship between students’actual uses and campus outdoor environments,identified what environmental characteristics that students prefered,how they used and why they participated in the outdoor activities.The results could be used as guidance of campus design and management.Investigation of three universities in Harbin provided 686 valid questionnaires.The results suggested that health awareness effectively promoted students’use frequencies of outdoor environments.Environment with"natural"and"cultural"characteristics,especially undulating landform,vibrant plants and landmarks in a serpentins design style attracted more uses.Female students showed more preferences on social interaction activities than males.Students who had good economic consumption levels and participated in outdoor activities frequntly in childhood prefered to join all the kinds of activities after university enrollment.
文摘Energy consumption increases with intensity of human activities. People consume energy for movement and other activities and the more fossil-fuel based energy used, the more carbon dioxide (CO2) emission. Since carbon dioxide is the major element of the greenhouse gases (GHG), this phenomenon has a serious implication for global warming and consequent climate change—a scenario that calls for sustainable development. This research considers the emission of CO2 from energy use within the campus of Universiti Teknologi Malaysia. Two major sources of energy consumption were identified, namely: electricity and transport. The emission for electricity was estimated based on electricity meter reading and the conversion rate in accordance with the stand-ardized conversion factors for fuel mix of the purchased electric energy as given by PTM (Pusat Tenaga Malaysia), while the associated CO2 emission for transport was estimated based on the number of miles driven (VMT—Vehicle Miles Travel) within the campus, emissions produced per litre of gasoline, and fuel economy of vehicles plying the campus in line with the Code of Federal Regulations USEPA and consistent with the Inter-governmental Panel on Climate Change (IPCC) guidelines. It was observed that high CO2 emission resulted from electricity energy consumption, and the highest emission in the transport sector was produced by commuting vehicles while emission from service delivery for cooling, lighting and other equipment was similar to national average.
文摘This paper, by introducing the conception of planning scheme of Zijingang West Campus of Zhejiang University, expounds how to integrate the traditional "human landscape" spirit into the planning and design of the modern campus, so as to create a personalized campus where cultural traditions are complementary to natural atmosphere. In this paper, with the campus planning and design as an extension as well as the blending and symbiosis between urban historical culture and natural scenery as the focus of attention, the Chinese thinking pattern stressing prefect harmony and in-depth dialogue between culture and nature is expected to be applied to the construction of modern cities to build and improve the "Shanshui city" planning system so that the planning concept that Chinese thought, "unity of man and nature", is used to build modern cities is carried forward.
文摘The study was undertaken to assess the extent of mercury contamination in the soil and three types of leaf plants in Campus AL-Mustansaryah University sites within Baghdad, Iraq, as well as to determine the relationship between environmental parameters and the distribution of the mercury contamination with carbon in soil samples were collected and analyzed for inorganic mercury. The highest mercury concentrations were recorded at the sites located lowest cover the plant and close to the diesel-electric generators. Mercury concentrations in leaf plant Ziziphusspina-christi higher concentration than the rest type and soil were mostly higher mercury concentration. Also ratio of carbon to coincide with the increase in the concentration of mercury in the soil of the study areas. Mercury is more biologically because of his preference to bind with carbon. This research confirms that Campus University is key areas for formation of bioavailable mercury distribution is tied to organic carbon.