In recent years,the Juxian County Family Planning Association of Shandong Province has vigorously initiated various income-generating activities and achieved encouraging results in integrating the family plan-ning pro...In recent years,the Juxian County Family Planning Association of Shandong Province has vigorously initiated various income-generating activities and achieved encouraging results in integrating the family plan-ning programme with the development of the rural cconomny,improving living standards and building up the mental civilization of the people.展开更多
Synchronous condensers(SCs)are generally used at the receiving-end stations of ultra-high-voltage direct current(UHVDC)transmission systems due to their strong reactive power support and flexible regulation of reactiv...Synchronous condensers(SCs)are generally used at the receiving-end stations of ultra-high-voltage direct current(UHVDC)transmission systems due to their strong reactive power support and flexible regulation of reactive power according to the interconnected grids operating conditions.In this paper,different starting control schemes of a SC integrated power grid are investigated providing four main contributions:1)The principle of reactive power support of the SC on the interconnected power grid is analytically studied,providing the establishment of mathematical models.2)Four different starting control schemes are developed for the initialization and SC integration,i.e.in Scheme 1,a preset initial falling speed is directly utilized without initialization;in Scheme 2,a black start sequential control approach with a static frequency converter(SFC)is proposed;in Scheme 3,PI/PD/PID controllers are respectively applied for the excitation device at the speed-falling stage;in Scheme 4,a pre-insertion approach of an energy absorption component with R/L/RL is utilized to suppress the surges at the SC integration instant.3)The dynamic behaviors of four different starting schemes at specific operating stages are evaluated.4)The success rate of SC integration is analyzed to evaluate starting control performance.Performance of the SC interconnected system with four different starting control schemes is evaluated in the timedomain simulation environment PSCAD/EMTDC^(TM).The results prove the superiority of the proposed starting control approach in Scheme 4.展开更多
Mycoplasma pneumonia is a common community-acquired pneumonia (CAP) in Asia. Children suffering from M. pneumoniae tend to progress quickly and develop severe pneumonia with a poor prognosis.(1) Effective manageme...Mycoplasma pneumonia is a common community-acquired pneumonia (CAP) in Asia. Children suffering from M. pneumoniae tend to progress quickly and develop severe pneumonia with a poor prognosis.(1) Effective management of M. pneumoniae infections include macrolides, tetracyclines or fluoroquinolones, however, antibiotic resistance may lead to unsatisfied clinical outcome. Chinese medicine (CM) is widely used in China and some Asian countries, which have good efficacy in the treatment of M. pneumoniae, especially for severe M. Pneumonia infection.(2) It has obvious advantages in terms of fever reduction and appetite improvement. Here we report a case of a child diagnosed with severe pneumonia who received antibiotics for 20 days but with suboptimal result, however, he experienced an optimal response to CM.展开更多
Introduction Amlodipine is a dihydropyridine calcium channel blocker (CCB) that inhibits calcium influx into cardiac, vascular smooth muscle cells, and pancreatic beta cells, leading to dilation of arteries and art...Introduction Amlodipine is a dihydropyridine calcium channel blocker (CCB) that inhibits calcium influx into cardiac, vascular smooth muscle cells, and pancreatic beta cells, leading to dilation of arteries and arterioles and reduction in insulin secretion. Oral administration of amlodipine is absorbed slowly but almost completely, with a hiah oral bioavailabilitv up to 60%-80%.展开更多
文摘In recent years,the Juxian County Family Planning Association of Shandong Province has vigorously initiated various income-generating activities and achieved encouraging results in integrating the family plan-ning programme with the development of the rural cconomny,improving living standards and building up the mental civilization of the people.
基金supported by the National Natural Science Foundation of China under Grant 51807091the Natural Science Foundation of Jiangsu Province BK20180478+2 种基金the China Postdoctoral Science Foundation under Grant 2019M661846the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources under Grant LAPS20016Engineering and Physical Sciences Research Council under Grant EP/N032888/1.
文摘Synchronous condensers(SCs)are generally used at the receiving-end stations of ultra-high-voltage direct current(UHVDC)transmission systems due to their strong reactive power support and flexible regulation of reactive power according to the interconnected grids operating conditions.In this paper,different starting control schemes of a SC integrated power grid are investigated providing four main contributions:1)The principle of reactive power support of the SC on the interconnected power grid is analytically studied,providing the establishment of mathematical models.2)Four different starting control schemes are developed for the initialization and SC integration,i.e.in Scheme 1,a preset initial falling speed is directly utilized without initialization;in Scheme 2,a black start sequential control approach with a static frequency converter(SFC)is proposed;in Scheme 3,PI/PD/PID controllers are respectively applied for the excitation device at the speed-falling stage;in Scheme 4,a pre-insertion approach of an energy absorption component with R/L/RL is utilized to suppress the surges at the SC integration instant.3)The dynamic behaviors of four different starting schemes at specific operating stages are evaluated.4)The success rate of SC integration is analyzed to evaluate starting control performance.Performance of the SC interconnected system with four different starting control schemes is evaluated in the timedomain simulation environment PSCAD/EMTDC^(TM).The results prove the superiority of the proposed starting control approach in Scheme 4.
文摘Mycoplasma pneumonia is a common community-acquired pneumonia (CAP) in Asia. Children suffering from M. pneumoniae tend to progress quickly and develop severe pneumonia with a poor prognosis.(1) Effective management of M. pneumoniae infections include macrolides, tetracyclines or fluoroquinolones, however, antibiotic resistance may lead to unsatisfied clinical outcome. Chinese medicine (CM) is widely used in China and some Asian countries, which have good efficacy in the treatment of M. pneumoniae, especially for severe M. Pneumonia infection.(2) It has obvious advantages in terms of fever reduction and appetite improvement. Here we report a case of a child diagnosed with severe pneumonia who received antibiotics for 20 days but with suboptimal result, however, he experienced an optimal response to CM.
文摘Introduction Amlodipine is a dihydropyridine calcium channel blocker (CCB) that inhibits calcium influx into cardiac, vascular smooth muscle cells, and pancreatic beta cells, leading to dilation of arteries and arterioles and reduction in insulin secretion. Oral administration of amlodipine is absorbed slowly but almost completely, with a hiah oral bioavailabilitv up to 60%-80%.