An organic geochemical,petrographical,and palynological evaluation was conducted on 30 claystone outcrop samples of the Toraja Formation,along with a geochemical analysis of an oil seep in the Enrekang Sub-basin.The a...An organic geochemical,petrographical,and palynological evaluation was conducted on 30 claystone outcrop samples of the Toraja Formation,along with a geochemical analysis of an oil seep in the Enrekang Sub-basin.The aim of the study was to determine the correlation between oil and source rock in terms of age,depositional environment,organic material sources,and maturity level.The total organic carbon content of the claystone samples varies from 0.03 to 4.52 wt%,which are classified as poor to excellent.The claystones are immature to post-mature with a mixture of TypeⅡandⅢkerogen.Their vitrinite reflectance values range from 0.47 to 4.52%Ro.The samples of Toraja Formation rock and the oil seep source rock might have a similar depositional environment,a deltaic marine depositional setting with high oxidizing conditions.Organic material sources for rock and oil samples are dominated by terrestrial input.The oil is inferred to have originated from the Paleogene source rocks,which correlates in age with the Toraja Formation.The recovered palynomorphs from the studied rock samples suggest a late Eocene to Oligocene age with a strong terrestrial influence of shallow marine depositional setting.The biomarker analysis shows that the rock samples have a more substantial contribution from the terrigenous higher plants,while the oil sample indicates a higher degree of marine influence.The maturity levels are also different between the oil(peak mature)and the analyzed rock samples(immature).It is inferred that the oil seep source rock is equivalent to the analyzed rock sample but more mature,having been deposited under more marine conditions.The oil seep source rock is not exposed and is located in the deeper part of the basin.A deeper marine facies(i.e.distal delta front and prodelta facies)in front of the distributary mouth bar within a delta is interpreted as the source rock of the oil seep sample.展开更多
Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasi...Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasis on knife cutting, and a focus on freshness. It emphasizes the original taste anda clear and mellow taste, which is extremely characterized by Lingnan culture. In this paper, research dataare collected from social media and online comments, supplemented by targeted interviews, questionnaires,and other methods. It uses grounded theory for data analysis. Through the induction and summary ofopen coding, axial coding, and selective coding based on grounded theory, it summarizes the physical space,cultural space, spiritual cultural space, and communication space of Chaoshan cuisine culture.展开更多
Water resource access in the Nouhao sub-basin, assessed based on the availability of drinking water mobilization facilities, the availability of water for uses and the quality of drinking water, revealed that in 2017 ...Water resource access in the Nouhao sub-basin, assessed based on the availability of drinking water mobilization facilities, the availability of water for uses and the quality of drinking water, revealed that in 2017 the basin was covered by 1249 modern water point, main drinking water sources. On average, the sub-basin shows a ratio of 271 users per drinking water point. Communal level shows some disparity with Bittou recording the highest number of people per drinking water point, i.e., around 537. Water that can be captured in the entire sub-basin meets only 42% of the total water needs from the three mains uses: irrigation, domestic consumption and livestock. The highest demander among these uses is Irrigation with 75% of the need, i.e., approximately 12,859,995 m<sup>3</sup>. Water in 33% drinking sources of this sub basin is of poor quality. Arsenic, one of the quality parameters studied, is found in some communes of the sub-basin. 11% of the water points in Bissiga are arsenic polluted making this commune the most arsenic contaminated location. The vulnerability maps deducted from lack of water for uses;lack of drinking water works and poor water quality shows so, the exposure level of the sub-basin’ communes to some potential risks related to low water resources access.展开更多
River flow in the Songwe sub-basin is predicted to alter due to climate change, which would have an impact on aquatic habitats, infrastructure, and people’s way of life. Therefore, the influence of climate change sho...River flow in the Songwe sub-basin is predicted to alter due to climate change, which would have an impact on aquatic habitats, infrastructure, and people’s way of life. Therefore, the influence of climate change should be taken into account when making decisions about the sustainable management of water resources in the sub-basin. This study looked into how river discharge would react to climate change in the future. By contrasting hydrological characteristics simulated under historical climate (1981-2010) with projected climate (2011-2040, 2041-2070, and 2071-2100) under two emission scenarios, the effects of climate change on river flow were evaluated (RCP 4.5 and RCP 8.5). The ensemble average of four CORDEX regional climate models was built to address the issue of uncertainty introduced by the climate models. The SWAT model was force-calibrated using the results from the generated ensemble average for the RCP 4.5 and RCP 8.5 emission scenarios in order to mimic the river flow during past (1981-2010) and future (2011-2100) events. The increase in river flows for the Songwe sub-basin is predicted to be largest during the rainy season by both the RCP 4.5 and RCP 8.5 scenarios. Under RCP 8.5, the abrupt decrease in river flow is anticipated to reach its maximum in March 2037, when the discharge will be 44.84 m<sup>3</sup>/sec, and in March 2027, when the discharge will be 48 m<sup>3</sup>/sec. The extreme surge in river flow will peak, according to the RCA4, in February 2023, in April 2083 under RCP 4.5, and, according to the CCLM4 and RCA4, in November 2027 and November 2046, respectively. The expected decrease and increase in river flow throughout both the dry and wet seasons may have an impact on the management of the sub-water basin’s resources, biodiversity, and hydraulic structures. The right adaptations and mitigation strategies should be adopted in order to lessen the negative consequences of climate change on precipitation, temperature, and river flow in the sub-basin.展开更多
目的:建立微量酸消解-电感耦合等离子体质谱法检测潮汕凉茶中15种元素(Al、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Se、Sr、Cd、Ba和Pb)的方法。方法:凉茶样品(200μL)经真空冷冻干燥,80℃水浴下使用65%硝酸(200μL)及30%过氧化氢(100μL...目的:建立微量酸消解-电感耦合等离子体质谱法检测潮汕凉茶中15种元素(Al、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Se、Sr、Cd、Ba和Pb)的方法。方法:凉茶样品(200μL)经真空冷冻干燥,80℃水浴下使用65%硝酸(200μL)及30%过氧化氢(100μL)分别消解1 h及10 min,消解后用3%硝酸稀释至5 m L,再利用电感耦合等离子体质谱法测定Al、V、Cr等15种元素的含量。结果:15种元素的线性关系良好(r>0.999),检测限为0.009~14.788μg/L,精密度为0.7%~2.4%,加标回收率为84.0%~125.2%。9种凉茶中Al、V、Cr、Mn、Fe、Ni、As、Sr、Ba等9种元素含量存在差异(P<0.05)。结论:建立了微量酸消解-电感耦合等离子体质谱法检测潮汕凉茶中元素的方法,该方法简便、快速、准确。展开更多
基金provided by Universitas Muslim Indonesia tothe first author(AAB).
文摘An organic geochemical,petrographical,and palynological evaluation was conducted on 30 claystone outcrop samples of the Toraja Formation,along with a geochemical analysis of an oil seep in the Enrekang Sub-basin.The aim of the study was to determine the correlation between oil and source rock in terms of age,depositional environment,organic material sources,and maturity level.The total organic carbon content of the claystone samples varies from 0.03 to 4.52 wt%,which are classified as poor to excellent.The claystones are immature to post-mature with a mixture of TypeⅡandⅢkerogen.Their vitrinite reflectance values range from 0.47 to 4.52%Ro.The samples of Toraja Formation rock and the oil seep source rock might have a similar depositional environment,a deltaic marine depositional setting with high oxidizing conditions.Organic material sources for rock and oil samples are dominated by terrestrial input.The oil is inferred to have originated from the Paleogene source rocks,which correlates in age with the Toraja Formation.The recovered palynomorphs from the studied rock samples suggest a late Eocene to Oligocene age with a strong terrestrial influence of shallow marine depositional setting.The biomarker analysis shows that the rock samples have a more substantial contribution from the terrigenous higher plants,while the oil sample indicates a higher degree of marine influence.The maturity levels are also different between the oil(peak mature)and the analyzed rock samples(immature).It is inferred that the oil seep source rock is equivalent to the analyzed rock sample but more mature,having been deposited under more marine conditions.The oil seep source rock is not exposed and is located in the deeper part of the basin.A deeper marine facies(i.e.distal delta front and prodelta facies)in front of the distributary mouth bar within a delta is interpreted as the source rock of the oil seep sample.
基金Zhaoqing University Students Innovative Training Program Project(X202310580164).
文摘Chaoshan cuisine originates from the unique Chaoshan regional culture and has undergonethousands of years of sedimentation and development. Chaoshan cuisine has a wide range of ingredients,exquisite materials, emphasis on knife cutting, and a focus on freshness. It emphasizes the original taste anda clear and mellow taste, which is extremely characterized by Lingnan culture. In this paper, research dataare collected from social media and online comments, supplemented by targeted interviews, questionnaires,and other methods. It uses grounded theory for data analysis. Through the induction and summary ofopen coding, axial coding, and selective coding based on grounded theory, it summarizes the physical space,cultural space, spiritual cultural space, and communication space of Chaoshan cuisine culture.
文摘Water resource access in the Nouhao sub-basin, assessed based on the availability of drinking water mobilization facilities, the availability of water for uses and the quality of drinking water, revealed that in 2017 the basin was covered by 1249 modern water point, main drinking water sources. On average, the sub-basin shows a ratio of 271 users per drinking water point. Communal level shows some disparity with Bittou recording the highest number of people per drinking water point, i.e., around 537. Water that can be captured in the entire sub-basin meets only 42% of the total water needs from the three mains uses: irrigation, domestic consumption and livestock. The highest demander among these uses is Irrigation with 75% of the need, i.e., approximately 12,859,995 m<sup>3</sup>. Water in 33% drinking sources of this sub basin is of poor quality. Arsenic, one of the quality parameters studied, is found in some communes of the sub-basin. 11% of the water points in Bissiga are arsenic polluted making this commune the most arsenic contaminated location. The vulnerability maps deducted from lack of water for uses;lack of drinking water works and poor water quality shows so, the exposure level of the sub-basin’ communes to some potential risks related to low water resources access.
文摘River flow in the Songwe sub-basin is predicted to alter due to climate change, which would have an impact on aquatic habitats, infrastructure, and people’s way of life. Therefore, the influence of climate change should be taken into account when making decisions about the sustainable management of water resources in the sub-basin. This study looked into how river discharge would react to climate change in the future. By contrasting hydrological characteristics simulated under historical climate (1981-2010) with projected climate (2011-2040, 2041-2070, and 2071-2100) under two emission scenarios, the effects of climate change on river flow were evaluated (RCP 4.5 and RCP 8.5). The ensemble average of four CORDEX regional climate models was built to address the issue of uncertainty introduced by the climate models. The SWAT model was force-calibrated using the results from the generated ensemble average for the RCP 4.5 and RCP 8.5 emission scenarios in order to mimic the river flow during past (1981-2010) and future (2011-2100) events. The increase in river flows for the Songwe sub-basin is predicted to be largest during the rainy season by both the RCP 4.5 and RCP 8.5 scenarios. Under RCP 8.5, the abrupt decrease in river flow is anticipated to reach its maximum in March 2037, when the discharge will be 44.84 m<sup>3</sup>/sec, and in March 2027, when the discharge will be 48 m<sup>3</sup>/sec. The extreme surge in river flow will peak, according to the RCA4, in February 2023, in April 2083 under RCP 4.5, and, according to the CCLM4 and RCA4, in November 2027 and November 2046, respectively. The expected decrease and increase in river flow throughout both the dry and wet seasons may have an impact on the management of the sub-water basin’s resources, biodiversity, and hydraulic structures. The right adaptations and mitigation strategies should be adopted in order to lessen the negative consequences of climate change on precipitation, temperature, and river flow in the sub-basin.
文摘目的:建立微量酸消解-电感耦合等离子体质谱法检测潮汕凉茶中15种元素(Al、V、Cr、Mn、Fe、Co、Ni、Cu、Zn、As、Se、Sr、Cd、Ba和Pb)的方法。方法:凉茶样品(200μL)经真空冷冻干燥,80℃水浴下使用65%硝酸(200μL)及30%过氧化氢(100μL)分别消解1 h及10 min,消解后用3%硝酸稀释至5 m L,再利用电感耦合等离子体质谱法测定Al、V、Cr等15种元素的含量。结果:15种元素的线性关系良好(r>0.999),检测限为0.009~14.788μg/L,精密度为0.7%~2.4%,加标回收率为84.0%~125.2%。9种凉茶中Al、V、Cr、Mn、Fe、Ni、As、Sr、Ba等9种元素含量存在差异(P<0.05)。结论:建立了微量酸消解-电感耦合等离子体质谱法检测潮汕凉茶中元素的方法,该方法简便、快速、准确。
