The environmental impact of coastal sand mining activities in Hai Phong city was assessed using ten proposed sustainable criteria for socio-economic development,and ecological and environmental protection.These ten cr...The environmental impact of coastal sand mining activities in Hai Phong city was assessed using ten proposed sustainable criteria for socio-economic development,and ecological and environmental protection.These ten criteria were developed by the analysis of the Dynamics-Pressure-State-Impact-Response(DPSIR)framework,including one driver and pressure criterion(D and P),seven status and impact criteria(S and I),and two response criteria(R).Each criterion is quantified according to five specific evaluation criteria corresponding to the evaluation score from 1 to 5.The results of the ten criterion application for environmental impact assessment of coastal mining Hai Phong by weighting show that the areas with economic activities,benthic biodiversity,and coastal ecosystems are most negatively impacted(score 4/5 and 3.5/5).Other subjects suffer low to moderate impacts(score 1/5 to 3/5).The environmental impact of sand mining(2015-2020)is generally moderate(score ranging from 2/5 to 3/5).The set of adjusted criteria can be applied to similar activities in coastal provinces and cities in Vietnam.展开更多
Collection and arrangement of the historical records of climatic changes andenvironment evolution, especially in the aspect of calamities, are made on the history documents ofpast 1500 years about Hai'an region, J...Collection and arrangement of the historical records of climatic changes andenvironment evolution, especially in the aspect of calamities, are made on the history documents ofpast 1500 years about Hai'an region, Jiangsu Province. There existed two obvious flooding-droughtfrequently-occurring periods: one was from 1550 AD to 1850 AD and another was 1000 AD to 1200 AD.The period of 1550 AD to 1850 AD is interrupted by two relatively arid and cold climatic periods:one was from 1630 AD to 1700 AD and another was 1750 AD to 1820 AD. The main characteristic of thecalamity periods is that they occurred by turns, and sometimes, both drought and flooding occurredin the same year. The instability of the climatic changes in the Little Ice Age may be the mainreason of the frequently-occurring flooding and drought in Hai'an region. Research results also showthat the frequently-occurring periods of flooding and drought is in close relationship with thesolar activity, and therefore, occurrence of the flooding and drought may be in relation with theintensity of the solar activity. This hypothesis may need further study in the future.展开更多
A new species of the genus Gonyosoma Wagler,1828 is described herein based on six specimens from the Diaoluoshan Mountains,Hainan Island,Hainan Province,China.The new species,Gonyosoma hainanense sp.nov.,is most simil...A new species of the genus Gonyosoma Wagler,1828 is described herein based on six specimens from the Diaoluoshan Mountains,Hainan Island,Hainan Province,China.The new species,Gonyosoma hainanense sp.nov.,is most similar to its continental sister species,Gonyosoma boulengeri(Mocquard,1897).Both taxa have a scaled protrusion on the anterior portion of the rostrum,distinct from other congeners.However,Gonyosoma hainanense sp.nov.can be distinguished from G.boulengeri by two significant morphological characters:(1)black orbital stripe absent in adults(vs.present in G.boulengeri);and(2)two loreals(vs.one loreal in G.boulengeri).The new species is also genetically divergent and forms a unique clade from its sister species and all other congeners based on sequences of the mitochondrial gene cytochrome b(cyt b).展开更多
Background： Although increasing parity increased the risk of pregnancy complications and despite of Vietnam’s family planning policy of two-child, the percent of women having three or more children has tended fo...Background： Although increasing parity increased the risk of pregnancy complications and despite of Vietnam’s family planning policy of two-child, the percent of women having three or more children has tended for five years. Objectives： （1） Find out the prevalence of parity ≥ 3 and their reasons at Haiphong Hospital of Obstetrics and Gynecology in 2016; （2） Describe the methods of labor and its adverse outcomes. Materials and methods： A cross-sectional in 485 women had delivered three or more infants at Haiphong Hospital of Obstetrics and Gynecology from June to August, 2016. Results： The prevalence of parity ≥ 3 is 11.9%, no relation to geopraphy, education and career. The main reasons are unplanned pregnancy and desire to have a baby boy. The sex ratio at birth is 162. The proportion of cesarean delivery is 53.4%, in which is due to an old C-section. Conclusion： serious gender is imbalance among women having three or more baby （162 baby boys per hundred baby girls）.展开更多
Background Non-suicidal self-injury (NSSI) behaviour is very common among adolescents. Its prevalence and behavioural characteristics may vary according to regional and cultural differences. Investigation of NSSI loca...Background Non-suicidal self-injury (NSSI) behaviour is very common among adolescents. Its prevalence and behavioural characteristics may vary according to regional and cultural differences. Investigation of NSSI locations and diagnosis of adolescents with NSSI are relatively lacking in China. Aims The study objective was to determine the prevalence and features of NSSI among middle school students in Shanghai. Methods The participants were from grade 6 to 8 selected from three junior schools in Jing’an District. Consenting students completed the Ottawa Self-Injury Inventory to determine the prevalence and characteristics of NSSI. Those who indicated NSSI within the past month were administered the Mini-International Neuropsychiatric Interview for Children and Adolescents to assess for emotional disorders. Result The result shows 510 participants (21.7%;mean age 13.51 (0.97) years old;56.7% female) reported at least one instance of NSSI during the previous 12 months. NSSI was significantly more common in girls than boys (24.9% vs 18.5%;χ^2=14.03, p=0.00). Commonly reported reasons for NSSI were for internal and external emotion regulation (87.9%, 82.3%) and social influence (57.8%). Anxiety disorders were the most common (28.9%) disorder associated with NSSI. Conclusion The rate of NSSI of middle school students in Shanghai inner bound is similar to those reported in North American and European youth. It is essential that school mental health professionals are aware of how to manage NSSI within the school setting.展开更多
The unpaired spin S=1/2 states which occur at the ends of an S=1 Heisenberg-like antiferromagnetic chain,have been observed recently in low-temperature electron spin-resonance measurements of Ni(C_(2)H_(8)N_(2))_(2)NO...The unpaired spin S=1/2 states which occur at the ends of an S=1 Heisenberg-like antiferromagnetic chain,have been observed recently in low-temperature electron spin-resonance measurements of Ni(C_(2)H_(8)N_(2))_(2)NO_(2)ClO_(4) containing selected impurities.We present here a further study on this topic by far infrared transmission spectra under the magnetic field.The splitting of S=1/2 modes was clearly observed and explained by the interaction of S=1/2 modes at two nearby chains,which can be separated by vacancy-like defect.展开更多
为了解平菇生长发育过程中子实体形成的代谢物基础,采用超高效液相色谱-电喷雾串联四级杆质谱(UPLC-ESI-MS/MS)技术结合多变量统计分析方法对发菌完成期(MM)、原基期(MP)及子实体分化期(MF)的平菇菌丝体进行代谢组学分析。结果表明,主成...为了解平菇生长发育过程中子实体形成的代谢物基础,采用超高效液相色谱-电喷雾串联四级杆质谱(UPLC-ESI-MS/MS)技术结合多变量统计分析方法对发菌完成期(MM)、原基期(MP)及子实体分化期(MF)的平菇菌丝体进行代谢组学分析。结果表明,主成分(PCA)模型分析结果显示3个时期平菇菌丝体中的代谢产物具有明显差异。通过正交偏最小二乘判别分析(OPLS‐DA),以VIP(varible importance in the projection)>1和差异倍数值(fold change)≥2或≤0.5为条件对MM vs MP、MM vs MF和MP vs MF中的差异代谢物进行比较分析,分别获得139个、147个和67个差异代谢物,变化倍数最大的物质包括氨基酸及其衍生物、脂质、生物碱、有机酸等,说明这些差异代谢物对平菇子实体发育具有重要影响。KEGG分析表明,苯丙氨酸代谢、色氨酸代谢、嘌呤代谢等20条代谢通路表现活跃。在子实体发育过程中,脂质、有机酸、核苷酸及其衍生物、氨基酸及其衍生物之间明显相关。以上研究结果为平菇子实体发育机制和标准化栽培提供了理论依据。展开更多
为揭示糙皮侧耳原基发育的潜在调控物质,采用代谢组学的方法对糙皮侧耳菌丝体和原基细胞代谢物进行检测分析。结果表明,菌丝体与原基细胞的代谢物具有显著差异。采用正交偏最小二乘判别分析(OPLS‐DA),以VIP(varible importance in the ...为揭示糙皮侧耳原基发育的潜在调控物质,采用代谢组学的方法对糙皮侧耳菌丝体和原基细胞代谢物进行检测分析。结果表明,菌丝体与原基细胞的代谢物具有显著差异。采用正交偏最小二乘判别分析(OPLS‐DA),以VIP(varible importance in the projection)≥1和倍数变化≥2或≤0.5为条件共筛选到400种差异代谢物。调控通路分析表明,这些差异物质涉及33条代谢通路,其中丙氨酸、天冬氨酸和谷氨酸、氨酰tRNA生物合成、嘌呤代谢等8条代谢通路具有极显著影响。谷氨酸和谷氨酰胺涉及p<0.01的大部分代谢通路,可能在糙皮侧耳原基发育过程中具有重要调控作用。研究结果为糙皮侧耳以及其他大型真菌原基发育机制的探索提供了理论依据。展开更多
基金support of the VAST project,code VAST05.06/22-23.
文摘The environmental impact of coastal sand mining activities in Hai Phong city was assessed using ten proposed sustainable criteria for socio-economic development,and ecological and environmental protection.These ten criteria were developed by the analysis of the Dynamics-Pressure-State-Impact-Response(DPSIR)framework,including one driver and pressure criterion(D and P),seven status and impact criteria(S and I),and two response criteria(R).Each criterion is quantified according to five specific evaluation criteria corresponding to the evaluation score from 1 to 5.The results of the ten criterion application for environmental impact assessment of coastal mining Hai Phong by weighting show that the areas with economic activities,benthic biodiversity,and coastal ecosystems are most negatively impacted(score 4/5 and 3.5/5).Other subjects suffer low to moderate impacts(score 1/5 to 3/5).The environmental impact of sand mining(2015-2020)is generally moderate(score ranging from 2/5 to 3/5).The set of adjusted criteria can be applied to similar activities in coastal provinces and cities in Vietnam.
文摘Collection and arrangement of the historical records of climatic changes andenvironment evolution, especially in the aspect of calamities, are made on the history documents ofpast 1500 years about Hai'an region, Jiangsu Province. There existed two obvious flooding-droughtfrequently-occurring periods: one was from 1550 AD to 1850 AD and another was 1000 AD to 1200 AD.The period of 1550 AD to 1850 AD is interrupted by two relatively arid and cold climatic periods:one was from 1630 AD to 1700 AD and another was 1750 AD to 1820 AD. The main characteristic of thecalamity periods is that they occurred by turns, and sometimes, both drought and flooding occurredin the same year. The instability of the climatic changes in the Little Ice Age may be the mainreason of the frequently-occurring flooding and drought in Hai'an region. Research results also showthat the frequently-occurring periods of flooding and drought is in close relationship with thesolar activity, and therefore, occurrence of the flooding and drought may be in relation with theintensity of the solar activity. This hypothesis may need further study in the future.
基金funded by the Postdoctoral Research Program of the Department of Human Resources and Social Security of Anhui Province(2020B422)Doctoral Research Starting Foundation of Anhui Normal University(752017)+1 种基金Open Foundation of Ministry of Education Key Laboratory for Ecology of Tropical Islands(HNSF-OP-202001)National Natural Science Foundation of China(31471968)。
文摘A new species of the genus Gonyosoma Wagler,1828 is described herein based on six specimens from the Diaoluoshan Mountains,Hainan Island,Hainan Province,China.The new species,Gonyosoma hainanense sp.nov.,is most similar to its continental sister species,Gonyosoma boulengeri(Mocquard,1897).Both taxa have a scaled protrusion on the anterior portion of the rostrum,distinct from other congeners.However,Gonyosoma hainanense sp.nov.can be distinguished from G.boulengeri by two significant morphological characters:(1)black orbital stripe absent in adults(vs.present in G.boulengeri);and(2)two loreals(vs.one loreal in G.boulengeri).The new species is also genetically divergent and forms a unique clade from its sister species and all other congeners based on sequences of the mitochondrial gene cytochrome b(cyt b).
文摘Background： Although increasing parity increased the risk of pregnancy complications and despite of Vietnam’s family planning policy of two-child, the percent of women having three or more children has tended for five years. Objectives： （1） Find out the prevalence of parity ≥ 3 and their reasons at Haiphong Hospital of Obstetrics and Gynecology in 2016; （2） Describe the methods of labor and its adverse outcomes. Materials and methods： A cross-sectional in 485 women had delivered three or more infants at Haiphong Hospital of Obstetrics and Gynecology from June to August, 2016. Results： The prevalence of parity ≥ 3 is 11.9%, no relation to geopraphy, education and career. The main reasons are unplanned pregnancy and desire to have a baby boy. The sex ratio at birth is 162. The proportion of cesarean delivery is 53.4%, in which is due to an old C-section. Conclusion： serious gender is imbalance among women having three or more baby （162 baby boys per hundred baby girls）.
文摘Background Non-suicidal self-injury (NSSI) behaviour is very common among adolescents. Its prevalence and behavioural characteristics may vary according to regional and cultural differences. Investigation of NSSI locations and diagnosis of adolescents with NSSI are relatively lacking in China. Aims The study objective was to determine the prevalence and features of NSSI among middle school students in Shanghai. Methods The participants were from grade 6 to 8 selected from three junior schools in Jing’an District. Consenting students completed the Ottawa Self-Injury Inventory to determine the prevalence and characteristics of NSSI. Those who indicated NSSI within the past month were administered the Mini-International Neuropsychiatric Interview for Children and Adolescents to assess for emotional disorders. Result The result shows 510 participants (21.7%;mean age 13.51 (0.97) years old;56.7% female) reported at least one instance of NSSI during the previous 12 months. NSSI was significantly more common in girls than boys (24.9% vs 18.5%;χ^2=14.03, p=0.00). Commonly reported reasons for NSSI were for internal and external emotion regulation (87.9%, 82.3%) and social influence (57.8%). Anxiety disorders were the most common (28.9%) disorder associated with NSSI. Conclusion The rate of NSSI of middle school students in Shanghai inner bound is similar to those reported in North American and European youth. It is essential that school mental health professionals are aware of how to manage NSSI within the school setting.
基金Supported by the National Natural Science Foundation of ChinAlexander von Humboldt Foundation of F.R.Germanythe Foundation of Education Division of Chinese Academy of Sciences for Young Scientist.
文摘The unpaired spin S=1/2 states which occur at the ends of an S=1 Heisenberg-like antiferromagnetic chain,have been observed recently in low-temperature electron spin-resonance measurements of Ni(C_(2)H_(8)N_(2))_(2)NO_(2)ClO_(4) containing selected impurities.We present here a further study on this topic by far infrared transmission spectra under the magnetic field.The splitting of S=1/2 modes was clearly observed and explained by the interaction of S=1/2 modes at two nearby chains,which can be separated by vacancy-like defect.
文摘为了解平菇生长发育过程中子实体形成的代谢物基础,采用超高效液相色谱-电喷雾串联四级杆质谱(UPLC-ESI-MS/MS)技术结合多变量统计分析方法对发菌完成期(MM)、原基期(MP)及子实体分化期(MF)的平菇菌丝体进行代谢组学分析。结果表明,主成分(PCA)模型分析结果显示3个时期平菇菌丝体中的代谢产物具有明显差异。通过正交偏最小二乘判别分析(OPLS‐DA),以VIP(varible importance in the projection)>1和差异倍数值(fold change)≥2或≤0.5为条件对MM vs MP、MM vs MF和MP vs MF中的差异代谢物进行比较分析,分别获得139个、147个和67个差异代谢物,变化倍数最大的物质包括氨基酸及其衍生物、脂质、生物碱、有机酸等,说明这些差异代谢物对平菇子实体发育具有重要影响。KEGG分析表明,苯丙氨酸代谢、色氨酸代谢、嘌呤代谢等20条代谢通路表现活跃。在子实体发育过程中,脂质、有机酸、核苷酸及其衍生物、氨基酸及其衍生物之间明显相关。以上研究结果为平菇子实体发育机制和标准化栽培提供了理论依据。
文摘为揭示糙皮侧耳原基发育的潜在调控物质,采用代谢组学的方法对糙皮侧耳菌丝体和原基细胞代谢物进行检测分析。结果表明,菌丝体与原基细胞的代谢物具有显著差异。采用正交偏最小二乘判别分析(OPLS‐DA),以VIP(varible importance in the projection)≥1和倍数变化≥2或≤0.5为条件共筛选到400种差异代谢物。调控通路分析表明,这些差异物质涉及33条代谢通路,其中丙氨酸、天冬氨酸和谷氨酸、氨酰tRNA生物合成、嘌呤代谢等8条代谢通路具有极显著影响。谷氨酸和谷氨酰胺涉及p<0.01的大部分代谢通路,可能在糙皮侧耳原基发育过程中具有重要调控作用。研究结果为糙皮侧耳以及其他大型真菌原基发育机制的探索提供了理论依据。
