This paper evaluates the efficacy of two sequential vertical flow filters (VFF), FV1 and FV2, implanted with Typha, in a pilot-scale wastewater treatment system. FV1 comprises three cells (FV1a, FV1b, and FV1c), while...This paper evaluates the efficacy of two sequential vertical flow filters (VFF), FV1 and FV2, implanted with Typha, in a pilot-scale wastewater treatment system. FV1 comprises three cells (FV1a, FV1b, and FV1c), while FV2 consists of two cells (FV2a and FV2b), each designed to reduce various physicochemical and microbiological pollutants from wastewater. Quantitative analyses show significant reductions in electrical conductivity (from 1331 to 1061 μS/cm), biochemical oxygen demand (BOD5 from 655.6 to 2.3 mg/L), chemical oxygen demand (COD from 1240 to 82.2 mg/L), total nitrogen (from 188 to 37.3 mg/L), and phosphates (from 70.9 to 14.6 mg/L). Notably, FV2 outperforms FV1, particularly in decreasing dissolved salts and BOD5 to remarkably low levels. Microbiological assessments reveal a substantial reduction in fecal coliforms, from an initial concentration of 7.5 log CFU/100mL to 3.7 log CFU/100mL, and a complete elimination of helminth eggs, achieving a 100% reduction rate in FV2. The study highlights the impact of design parameters, such as filter material, media depth, and plant species selection, on treatment outcomes. The findings suggest that the judicious choice of these components is critical for optimizing pollutant removal. For instance, different filtration materials show varying efficacies, with silex plus river gravel in FV1c achieving superior pollutant reduction rates. In conclusion, VFFs emerge as a promising solution for wastewater treatment, underscoring the importance of design optimization to enhance system efficiency. Continuous monitoring and adaptation of treatment practices are imperative to ensure water quality, allowing for safe environmental discharge or water reuse. The research advocates for ongoing improvements in wastewater treatment technologies, considering the environmental challenges of the current era. The study concludes with a call for further research to maximize the effectiveness of VFFs in water management.展开更多
Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss...Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss (TEWL). Recent advances in coherence tomography have also revealed that skin aging affects in vivo epidermal keratinocyte architecture. However, the interconnectivity between spatial architectural aging and visual/physiological aging parameters remains largely unknown. Purpose: To elucidate whether the tomographic keratinocyte architectural aging is correlated with visual and physiological skin aging parameters and to quantitatively evaluate the improvements of the architectural, visual, and physiological aging parameters by the daily treatment of the skin care formula containing Galactomyces Ferment Filtrate (GFF, 8X Pitera<sup>TM</sup>). Method: We measured the in vivo keratinocyte cellular architecture with two-photon stereoscopic tomography obtaining by-layer epidermal section images in 78 Asian females of various ages. Visual aging parameters were analyzed using a portable image capture system. Hydration and TEWL were also assessed. The anti-aging effects of GFF-containing skin moisturizer (SK-II LXP Cream<sup>TM</sup>) were also examined in two studies after twice-daily application for 2 (N = 35) and 4 (N = 32) weeks. Results: As for the keratinocyte cellular architecture, skin aging was significantly associated with decreased cell density and increased cell uniformity. These architectural aging parameters were significantly correlated with visual and physiological aging parameters, namely, rough texture, wrinkles, pore dilation, dull skin tone, dehydration, and increased TEWL. The strong interconnectivity allowed us to develop formulae to estimate the keratinocyte architecture from visual aging parameters. Moreover, twice-daily application of SK-II significantly improved the keratinocyte architecture associated with multiple skin aging visual and physiological parameters. Conclusion: Skin aging is a process involving mutual interconnections among epidermal keratinocyte cellular architecture, visual, and physiological parameters. The GFF-containing moisturizer SK-II effectively improves spatial architecture of keratinocytes in epidermis and these evaluated skin aging parameters in a new trajectory over the course of treatment. .展开更多
Strategic management of equipment system develop-ment must attach importance to effective strategic risk manage-ment.Aiming at the identification of strategic risk of equipment system development,firstly,the source of...Strategic management of equipment system develop-ment must attach importance to effective strategic risk manage-ment.Aiming at the identification of strategic risk of equipment system development,firstly,the source of strategic risk of equip-ment system development is analyzed and classified.Based on this,a causal loop diagram of strategic risk of equipment sys-tem development based on system dynamics is established.The system dynamics analysis software Vensim PLE is used to carry out the risk influencing factors analysis,risk consequences ana-lysis,risk feedback loop identification and corresponding pre-control measures,and achieves a good risk identification effect.展开更多
目的 探讨脑小血管病(CSVD)患者近期皮质下小梗死与认知功能的相关性。方法 回顾性连续纳入2018年2月―2022年9月就诊于北京大学第一医院神经内科经头部MRI诊断的CSVD患者,收集一般人口学资料和临床资料,使用简易精神状态量表(MMSE)、...目的 探讨脑小血管病(CSVD)患者近期皮质下小梗死与认知功能的相关性。方法 回顾性连续纳入2018年2月―2022年9月就诊于北京大学第一医院神经内科经头部MRI诊断的CSVD患者,收集一般人口学资料和临床资料,使用简易精神状态量表(MMSE)、蒙特利尔认知评估量表(MoCA)评估认知功能,根据磁共振DWI分为近期皮质下小梗死(RSSI)组和非RSSI组,统计RSSI的部位和数目。比较两组患者的一般人口学资料、临床资料、认知功能,分析RSSI影像学特征与认知功能的关系。结果 共纳入CSVD患者181例,RSSI组91例,非RSSI组90例。RSSI组与非RSSI组相比,BMI高[(25.43±3.53)kg/m^(2) vs(24.27±3.33)kg/m^(2),t=2.228, P=0.027],收缩压高[(145.3±16.2)mmHg vs(139.6±20.2)mmHg,t=2.013,P=0.046],MoCA总分较低[22(18.8,26) vs 24(21,27),Z=-1.980,P=0.048],视空间与执行能力[3(2,4) vs 4(3,5),Z=-2.756,P=0.006]、语言[2(2,3) vs 2(1,2), Z=-2.020,P=0.043]、抽象[2(1,2) vs 2(1,2)分,Z=-2.052,P=0.04]得分均较低,差异均具有显著性统计学意义(P<0.05)。RSSI基底节梗死组与非RSSI组相比,MoCA总分较低[21(17,23) vs 24(21,27),Z=-2.018,P=0.044],视空间与执行[3(1.5,3.5) vs 4(3,5),Z=-2.601,P=0.009]得分较低,RSSI脑干梗死组与非RSSI组相比,视空间与执行[3(2,4) vs 4(3,5),Z=-2.325,P=0.020]、语言[2(1,2) vs 2(2,3),Z=-2.338,P=0.019]得分较低,差异具有显著性统计学意义。结论 CSVD患者中RSSI可导致认知功能障碍,与RSSI梗死部位相关,RSSI不同梗死部位导致不同的认知损害模式。预防RSSI发生,对于预防CSVD相关认知功能障碍具有重要意义。展开更多
目的:通过研究儿童呼吸和哮喘控制测试(test for respiratory and asthma control in kids,TRACK)和儿童哮喘控制测试(childhood asthma control test,C-ACT)与全球哮喘防治创议(global initiative for asthma,GINA)标准哮喘控制水平评...目的:通过研究儿童呼吸和哮喘控制测试(test for respiratory and asthma control in kids,TRACK)和儿童哮喘控制测试(childhood asthma control test,C-ACT)与全球哮喘防治创议(global initiative for asthma,GINA)标准哮喘控制水平评估的一致性、与哮喘儿童肺功能指标的相关性,探讨2种评分方法在儿童哮喘管理中的价值。方法:选择2020年8月至2022年3月重庆市妇幼保健院儿科门诊就诊的哮喘患儿135例为研究对象,用TRACK评分表和C-ACT评分表对相应年龄的患儿及其家长进行问卷调查,分析2种评分方法与GINA标准哮喘控制水平评估分级的一致性、与肺功能指标的相关性,并比较不同评分结果组肺功能指标差异。结果:TRACK评分、C-ACT评分与GINA哮喘控制水平分级一致性检验Kappa值分别为0.517和0.531,均显示一致性一般;TRACK评分与TPF%TE和VPF%VE存在显著的正相关,但TRACK评分、C-ACT评分与FEV1%均没有显著性相关;不同TRACK评分组哮喘患儿的FEV1%差异无统计学意义(F=2.054,P=0.134),但多重比较发现≥80分组与<60分组FEV1%的差异有统计学意义(P=0.048);不同TRACK评分组哮喘患儿的TPTEF/TE(%)(F=3.171,P=0.044)和VPEF/VE(%)(F=3.919,P=0.022)差异有统计学意义,进一步多重比较发现其差异主要来自于≥80分组与60~80分组,其中VPEF/VE(%)(P=0.017)的组间差异较TPTEF/TE(%)(P=0.030)更为明显;比较不同C-ACT评分组哮喘患儿的FEV1%差异无统计学意义(F=1.756,P=0.182)。结论:TRACK评分能更好反映儿童肺功能的差异,可作为5岁以下儿童哮喘管理的一个有效评估工具。展开更多
文摘This paper evaluates the efficacy of two sequential vertical flow filters (VFF), FV1 and FV2, implanted with Typha, in a pilot-scale wastewater treatment system. FV1 comprises three cells (FV1a, FV1b, and FV1c), while FV2 consists of two cells (FV2a and FV2b), each designed to reduce various physicochemical and microbiological pollutants from wastewater. Quantitative analyses show significant reductions in electrical conductivity (from 1331 to 1061 μS/cm), biochemical oxygen demand (BOD5 from 655.6 to 2.3 mg/L), chemical oxygen demand (COD from 1240 to 82.2 mg/L), total nitrogen (from 188 to 37.3 mg/L), and phosphates (from 70.9 to 14.6 mg/L). Notably, FV2 outperforms FV1, particularly in decreasing dissolved salts and BOD5 to remarkably low levels. Microbiological assessments reveal a substantial reduction in fecal coliforms, from an initial concentration of 7.5 log CFU/100mL to 3.7 log CFU/100mL, and a complete elimination of helminth eggs, achieving a 100% reduction rate in FV2. The study highlights the impact of design parameters, such as filter material, media depth, and plant species selection, on treatment outcomes. The findings suggest that the judicious choice of these components is critical for optimizing pollutant removal. For instance, different filtration materials show varying efficacies, with silex plus river gravel in FV1c achieving superior pollutant reduction rates. In conclusion, VFFs emerge as a promising solution for wastewater treatment, underscoring the importance of design optimization to enhance system efficiency. Continuous monitoring and adaptation of treatment practices are imperative to ensure water quality, allowing for safe environmental discharge or water reuse. The research advocates for ongoing improvements in wastewater treatment technologies, considering the environmental challenges of the current era. The study concludes with a call for further research to maximize the effectiveness of VFFs in water management.
文摘Background: Aged skin exhibits visual alterations such as wrinkles, rough texture, pore dilation, and dull skin tone, as well as physiological aging, namely, decreased hydration and increased transepidermal water loss (TEWL). Recent advances in coherence tomography have also revealed that skin aging affects in vivo epidermal keratinocyte architecture. However, the interconnectivity between spatial architectural aging and visual/physiological aging parameters remains largely unknown. Purpose: To elucidate whether the tomographic keratinocyte architectural aging is correlated with visual and physiological skin aging parameters and to quantitatively evaluate the improvements of the architectural, visual, and physiological aging parameters by the daily treatment of the skin care formula containing Galactomyces Ferment Filtrate (GFF, 8X Pitera<sup>TM</sup>). Method: We measured the in vivo keratinocyte cellular architecture with two-photon stereoscopic tomography obtaining by-layer epidermal section images in 78 Asian females of various ages. Visual aging parameters were analyzed using a portable image capture system. Hydration and TEWL were also assessed. The anti-aging effects of GFF-containing skin moisturizer (SK-II LXP Cream<sup>TM</sup>) were also examined in two studies after twice-daily application for 2 (N = 35) and 4 (N = 32) weeks. Results: As for the keratinocyte cellular architecture, skin aging was significantly associated with decreased cell density and increased cell uniformity. These architectural aging parameters were significantly correlated with visual and physiological aging parameters, namely, rough texture, wrinkles, pore dilation, dull skin tone, dehydration, and increased TEWL. The strong interconnectivity allowed us to develop formulae to estimate the keratinocyte architecture from visual aging parameters. Moreover, twice-daily application of SK-II significantly improved the keratinocyte architecture associated with multiple skin aging visual and physiological parameters. Conclusion: Skin aging is a process involving mutual interconnections among epidermal keratinocyte cellular architecture, visual, and physiological parameters. The GFF-containing moisturizer SK-II effectively improves spatial architecture of keratinocytes in epidermis and these evaluated skin aging parameters in a new trajectory over the course of treatment. .
文摘Strategic management of equipment system develop-ment must attach importance to effective strategic risk manage-ment.Aiming at the identification of strategic risk of equipment system development,firstly,the source of strategic risk of equip-ment system development is analyzed and classified.Based on this,a causal loop diagram of strategic risk of equipment sys-tem development based on system dynamics is established.The system dynamics analysis software Vensim PLE is used to carry out the risk influencing factors analysis,risk consequences ana-lysis,risk feedback loop identification and corresponding pre-control measures,and achieves a good risk identification effect.
文摘目的 探讨脑小血管病(CSVD)患者近期皮质下小梗死与认知功能的相关性。方法 回顾性连续纳入2018年2月―2022年9月就诊于北京大学第一医院神经内科经头部MRI诊断的CSVD患者,收集一般人口学资料和临床资料,使用简易精神状态量表(MMSE)、蒙特利尔认知评估量表(MoCA)评估认知功能,根据磁共振DWI分为近期皮质下小梗死(RSSI)组和非RSSI组,统计RSSI的部位和数目。比较两组患者的一般人口学资料、临床资料、认知功能,分析RSSI影像学特征与认知功能的关系。结果 共纳入CSVD患者181例,RSSI组91例,非RSSI组90例。RSSI组与非RSSI组相比,BMI高[(25.43±3.53)kg/m^(2) vs(24.27±3.33)kg/m^(2),t=2.228, P=0.027],收缩压高[(145.3±16.2)mmHg vs(139.6±20.2)mmHg,t=2.013,P=0.046],MoCA总分较低[22(18.8,26) vs 24(21,27),Z=-1.980,P=0.048],视空间与执行能力[3(2,4) vs 4(3,5),Z=-2.756,P=0.006]、语言[2(2,3) vs 2(1,2), Z=-2.020,P=0.043]、抽象[2(1,2) vs 2(1,2)分,Z=-2.052,P=0.04]得分均较低,差异均具有显著性统计学意义(P<0.05)。RSSI基底节梗死组与非RSSI组相比,MoCA总分较低[21(17,23) vs 24(21,27),Z=-2.018,P=0.044],视空间与执行[3(1.5,3.5) vs 4(3,5),Z=-2.601,P=0.009]得分较低,RSSI脑干梗死组与非RSSI组相比,视空间与执行[3(2,4) vs 4(3,5),Z=-2.325,P=0.020]、语言[2(1,2) vs 2(2,3),Z=-2.338,P=0.019]得分较低,差异具有显著性统计学意义。结论 CSVD患者中RSSI可导致认知功能障碍,与RSSI梗死部位相关,RSSI不同梗死部位导致不同的认知损害模式。预防RSSI发生,对于预防CSVD相关认知功能障碍具有重要意义。
文摘目的:通过研究儿童呼吸和哮喘控制测试(test for respiratory and asthma control in kids,TRACK)和儿童哮喘控制测试(childhood asthma control test,C-ACT)与全球哮喘防治创议(global initiative for asthma,GINA)标准哮喘控制水平评估的一致性、与哮喘儿童肺功能指标的相关性,探讨2种评分方法在儿童哮喘管理中的价值。方法:选择2020年8月至2022年3月重庆市妇幼保健院儿科门诊就诊的哮喘患儿135例为研究对象,用TRACK评分表和C-ACT评分表对相应年龄的患儿及其家长进行问卷调查,分析2种评分方法与GINA标准哮喘控制水平评估分级的一致性、与肺功能指标的相关性,并比较不同评分结果组肺功能指标差异。结果:TRACK评分、C-ACT评分与GINA哮喘控制水平分级一致性检验Kappa值分别为0.517和0.531,均显示一致性一般;TRACK评分与TPF%TE和VPF%VE存在显著的正相关,但TRACK评分、C-ACT评分与FEV1%均没有显著性相关;不同TRACK评分组哮喘患儿的FEV1%差异无统计学意义(F=2.054,P=0.134),但多重比较发现≥80分组与<60分组FEV1%的差异有统计学意义(P=0.048);不同TRACK评分组哮喘患儿的TPTEF/TE(%)(F=3.171,P=0.044)和VPEF/VE(%)(F=3.919,P=0.022)差异有统计学意义,进一步多重比较发现其差异主要来自于≥80分组与60~80分组,其中VPEF/VE(%)(P=0.017)的组间差异较TPTEF/TE(%)(P=0.030)更为明显;比较不同C-ACT评分组哮喘患儿的FEV1%差异无统计学意义(F=1.756,P=0.182)。结论:TRACK评分能更好反映儿童肺功能的差异,可作为5岁以下儿童哮喘管理的一个有效评估工具。
