The sea area surrounding Baishishan Island has abundant fishery resources because of its plentiful food and rocky reefs that provide refuge from predators.However,overfishing has occurred in many areas and some specie...The sea area surrounding Baishishan Island has abundant fishery resources because of its plentiful food and rocky reefs that provide refuge from predators.However,overfishing has occurred in many areas and some species’local populations need to be replenished through stocking programs.This case study,using Sparus microcephalus as the test species,designed and analyzed detailed stocking strategies to improve the survival ratio and control the active range of the released fishes.Controlled variables included release location,release time,and tidal level.Two stocking strategies were designed,executed,and evaluated for comparison.A traditional stocking method was applied to the high flow area of Baishishan Island in Xiangshan Bay,East China Sea.The released fry were transported by boat and released to the sea using buckets.Released fish were traced using plastic tags.The average distance of the 19 recaptured fry from the release point was 7.6 km with 52.9%mortality rate.The distance at recapture and mortality rate among recaptured individuals showed that the traditional releasing method was not successful.An in situ stocking method was used in a low tide area and natural process was imitated to decrease the stress response and promote physiological adaptation.The purpose of this method was to prolong the release process applying temporary net cages at the release location,which resulted in a regional distribution of the released fish and possibly improving the food availability.A new Sr+tagging technique was adopted to evaluate the release effect and quantify comparative release data.Only 1 fish among the 354 caught was found farther than 1 km from the release point in the following 6 months.The results validated the promotion of the new stocking technique.展开更多
The results of a study of event tagging strategies for elementary physics processes in the T-charm region are presented. The algorithm for online event filtering is optimized by adopting the information provided by di...The results of a study of event tagging strategies for elementary physics processes in the T-charm region are presented. The algorithm for online event filtering is optimized by adopting the information provided by different sub-detectors according to their strengths and capacities. The algorithm is tested with various generated physics and background events. The results indicate that the algorithm satisfies the requirements of BESⅢ physics analysis and its DAQ system.展开更多
为了解决射频识别(Radio Frequency IDentification,RFID)系统中的多标签防碰撞问题,在分析帧时隙ALOHA算法的基础上,提出一种基于分组自适应分配时隙的RFID防碰撞算法(GAAS).首先让阅读器对标签随机所选的时隙进行扫描统计,并将其发送...为了解决射频识别(Radio Frequency IDentification,RFID)系统中的多标签防碰撞问题,在分析帧时隙ALOHA算法的基础上,提出一种基于分组自适应分配时隙的RFID防碰撞算法(GAAS).首先让阅读器对标签随机所选的时隙进行扫描统计,并将其发送给每一个标签,标签再进行相应地时隙调整,使阅读器跳过空闲时隙和碰撞时隙,自适应地分配有效时隙,进而对标签进行快速识别.当未识别标签数比较大时,算法采用分组以及动态调整帧长等策略,以减少时隙处理的时间.仿真结果表明:GAAS算法提高了系统的识别效率和稳定性,降低了传输开销.特别是当标签数超过1000时,该算法的吞吐率仍保持在71%以上,比传统的帧时隙ALOHA-256算法和分组动态帧时隙ALOHA算法的系统效率分别提高了300%和97.2%.展开更多
This study compared the growth and lipid accumulation properties of two oleaginous microalgae, namely, Scenedesmus sp. LX1 and Chlorella sp. HQ, under different nutrient conditions. Both algal species obtained the hig...This study compared the growth and lipid accumulation properties of two oleaginous microalgae, namely, Scenedesmus sp. LX1 and Chlorella sp. HQ, under different nutrient conditions. Both algal species obtained the highest biomass, lipid content and lipid yield under low-nutrient conditions （mBGll medium）. The biomass, lipid content and lipid yield of Scenedesmus sp. LX1 were 0.42g·L^-1, 22.5% and 93.8mg·L^-1, respectively. These values were relatively higher than those of Chlorella sp. HQ （0.30g·L^-1, 17.1% and 51.3mg·L^-1, respectively）. These algae were then cultivated in an SE medium that contained more nutrients; as a result, the biomass and lipid yield of Scenedesmus sp. LX1 reduced more significantly than those of Chlorella sp. HQ. Opposite results were observed in lipid and triacylglycerols （TAGs） contents. The cell sizes of both algal species under low-nutrient conditions were larger than those under high-nutrient conditions. Chlorella sp. HQ cells did not aggregate, but Scenedesmus sp. LX1 cells flocculated easily, particularly under low-nutrient conditions. In summary, low-nutrient conditions favour the growth and lipid production of both algae, but Scenedesmus sp. LX1 outperforms Chlorella sp. HQ.展开更多
Release programs to enhance stocks of ark shell(Anadara broughtonii) have been undertaken in a number of Asian countries,but their effectiveness has rarely been investigated owing to a lack of marking methods.The qual...Release programs to enhance stocks of ark shell(Anadara broughtonii) have been undertaken in a number of Asian countries,but their effectiveness has rarely been investigated owing to a lack of marking methods.The quality and longevity of fluorescent markers,alizarin red S(ARS) and calcein(CAL)(200 and 300 mg/L),as well as clip tags,were tested on juvenile A.broughtonii.No significant differences in survival or shell growth were observed in juveniles stained with either of the two fluorochromes after a 160-day culture period,but the retention rate was 100%after 1 year.Fluorescent marks(>grade 3) were observable microscopically in juveniles stained with the two fluorochromes,and some fluorescent marks(>grade 4) were visible with the naked eye after 1 year.ARS-marked shells were brighter than those marked with CAL,and shells marked with 300 mg/L of the fluorochromes were easier to detect than those marked with 200 mg/L.Clip tags were incorporated into the shell as the bivalve grew,and the retention rate was64.25%after 160 days.Significant differences in survival(at 30 days),shell length(at 60,90,120,and 160days),and wet weight(at 90,120,and 160 days) were observed between the clip-tagged and control groups(all P<0.05),indicating that the tags may have passive effects on the ark shell.The results suggest that both ARS and CAL are suitable to mark A.broughtonii for large-scale restocking programs,and that optimal marking quality was achieved with 300 mg/L ARS.Lighter and smaller clip tags need to be developed to reduce injury and increase survival rate of clams.展开更多
目的观察芪苓健脾配方颗粒辅助治疗肾病综合征脾肾亏虚证的临床疗效。方法将60例肾病综合征脾肾亏虚证患者采用随机数字表法分为2组,各30例。对照组给予西医常规治疗,治疗组在对照组治疗方法的基础上联合芪苓健脾配方颗粒治疗,2组均以4...目的观察芪苓健脾配方颗粒辅助治疗肾病综合征脾肾亏虚证的临床疗效。方法将60例肾病综合征脾肾亏虚证患者采用随机数字表法分为2组,各30例。对照组给予西医常规治疗,治疗组在对照组治疗方法的基础上联合芪苓健脾配方颗粒治疗,2组均以4周为1个疗程,治疗2个疗程后比较2组的临床疗效、复发率、不良反应发生情况,以及治疗前后中医证候总积分、实验室检查指标[24 h尿蛋白定量(24 h UPQ)、血浆白蛋白(ALB)、总胆固醇(TC)、三酰甘油(TAG)、血肌酐(Scr)]。结果治疗组总有效率为93.33%(28/30),对照组为70.00%(24/30),2组比较差异有统计学意义(P<0.05);治疗组复发率为3.33%(1/30),对照组为20.00%(6/30),2组比较差异有统计学意义(P<0.05)。2组治疗后中医证候总积分、24 h UPQ、TC、TAG均明显降低,ALB明显升高,与同组治疗前比较差异有统计学意义(P<0.01),且治疗组各项指标改善更明显,与对照组治疗后比较差异均有统计学意义(P<0.05或P<0.01)。2组治疗过程中心电图,血、粪常规,肝功能均未见明显异常。结论芪苓健脾配方颗粒可有效改善肾病综合征脾肾亏虚证患者的临床症状,降低复发率,且安全性高,值得临床推广应用。展开更多
基金The study was financially supported by the National Natural Science Foundation of China(No.51309150)Special Fund for Agro-scientific Research in the Public Interest(No.201303047).
文摘The sea area surrounding Baishishan Island has abundant fishery resources because of its plentiful food and rocky reefs that provide refuge from predators.However,overfishing has occurred in many areas and some species’local populations need to be replenished through stocking programs.This case study,using Sparus microcephalus as the test species,designed and analyzed detailed stocking strategies to improve the survival ratio and control the active range of the released fishes.Controlled variables included release location,release time,and tidal level.Two stocking strategies were designed,executed,and evaluated for comparison.A traditional stocking method was applied to the high flow area of Baishishan Island in Xiangshan Bay,East China Sea.The released fry were transported by boat and released to the sea using buckets.Released fish were traced using plastic tags.The average distance of the 19 recaptured fry from the release point was 7.6 km with 52.9%mortality rate.The distance at recapture and mortality rate among recaptured individuals showed that the traditional releasing method was not successful.An in situ stocking method was used in a low tide area and natural process was imitated to decrease the stress response and promote physiological adaptation.The purpose of this method was to prolong the release process applying temporary net cages at the release location,which resulted in a regional distribution of the released fish and possibly improving the food availability.A new Sr+tagging technique was adopted to evaluate the release effect and quantify comparative release data.Only 1 fish among the 354 caught was found farther than 1 km from the release point in the following 6 months.The results validated the promotion of the new stocking technique.
基金CAS Knowledge Innovation Project(U-602,U-34)National Natural Science Foundation of China(10491300,10491303,10605030)100 Talents Program of CAS (U-25 and.U-54)
文摘The results of a study of event tagging strategies for elementary physics processes in the T-charm region are presented. The algorithm for online event filtering is optimized by adopting the information provided by different sub-detectors according to their strengths and capacities. The algorithm is tested with various generated physics and background events. The results indicate that the algorithm satisfies the requirements of BESⅢ physics analysis and its DAQ system.
文摘为了解决射频识别(Radio Frequency IDentification,RFID)系统中的多标签防碰撞问题,在分析帧时隙ALOHA算法的基础上,提出一种基于分组自适应分配时隙的RFID防碰撞算法(GAAS).首先让阅读器对标签随机所选的时隙进行扫描统计,并将其发送给每一个标签,标签再进行相应地时隙调整,使阅读器跳过空闲时隙和碰撞时隙,自适应地分配有效时隙,进而对标签进行快速识别.当未识别标签数比较大时,算法采用分组以及动态调整帧长等策略,以减少时隙处理的时间.仿真结果表明:GAAS算法提高了系统的识别效率和稳定性,降低了传输开销.特别是当标签数超过1000时,该算法的吞吐率仍保持在71%以上,比传统的帧时隙ALOHA-256算法和分组动态帧时隙ALOHA算法的系统效率分别提高了300%和97.2%.
文摘This study compared the growth and lipid accumulation properties of two oleaginous microalgae, namely, Scenedesmus sp. LX1 and Chlorella sp. HQ, under different nutrient conditions. Both algal species obtained the highest biomass, lipid content and lipid yield under low-nutrient conditions （mBGll medium）. The biomass, lipid content and lipid yield of Scenedesmus sp. LX1 were 0.42g·L^-1, 22.5% and 93.8mg·L^-1, respectively. These values were relatively higher than those of Chlorella sp. HQ （0.30g·L^-1, 17.1% and 51.3mg·L^-1, respectively）. These algae were then cultivated in an SE medium that contained more nutrients; as a result, the biomass and lipid yield of Scenedesmus sp. LX1 reduced more significantly than those of Chlorella sp. HQ. Opposite results were observed in lipid and triacylglycerols （TAGs） contents. The cell sizes of both algal species under low-nutrient conditions were larger than those under high-nutrient conditions. Chlorella sp. HQ cells did not aggregate, but Scenedesmus sp. LX1 cells flocculated easily, particularly under low-nutrient conditions. In summary, low-nutrient conditions favour the growth and lipid production of both algae, but Scenedesmus sp. LX1 outperforms Chlorella sp. HQ.
基金Supported by the Special Fund for Agro-Scientific Research in the Public Interest(No.201003068)the National Department Public Benefit Research Foundation(No.201305043)
文摘Release programs to enhance stocks of ark shell(Anadara broughtonii) have been undertaken in a number of Asian countries,but their effectiveness has rarely been investigated owing to a lack of marking methods.The quality and longevity of fluorescent markers,alizarin red S(ARS) and calcein(CAL)(200 and 300 mg/L),as well as clip tags,were tested on juvenile A.broughtonii.No significant differences in survival or shell growth were observed in juveniles stained with either of the two fluorochromes after a 160-day culture period,but the retention rate was 100%after 1 year.Fluorescent marks(>grade 3) were observable microscopically in juveniles stained with the two fluorochromes,and some fluorescent marks(>grade 4) were visible with the naked eye after 1 year.ARS-marked shells were brighter than those marked with CAL,and shells marked with 300 mg/L of the fluorochromes were easier to detect than those marked with 200 mg/L.Clip tags were incorporated into the shell as the bivalve grew,and the retention rate was64.25%after 160 days.Significant differences in survival(at 30 days),shell length(at 60,90,120,and 160days),and wet weight(at 90,120,and 160 days) were observed between the clip-tagged and control groups(all P<0.05),indicating that the tags may have passive effects on the ark shell.The results suggest that both ARS and CAL are suitable to mark A.broughtonii for large-scale restocking programs,and that optimal marking quality was achieved with 300 mg/L ARS.Lighter and smaller clip tags need to be developed to reduce injury and increase survival rate of clams.
文摘目的观察芪苓健脾配方颗粒辅助治疗肾病综合征脾肾亏虚证的临床疗效。方法将60例肾病综合征脾肾亏虚证患者采用随机数字表法分为2组,各30例。对照组给予西医常规治疗,治疗组在对照组治疗方法的基础上联合芪苓健脾配方颗粒治疗,2组均以4周为1个疗程,治疗2个疗程后比较2组的临床疗效、复发率、不良反应发生情况,以及治疗前后中医证候总积分、实验室检查指标[24 h尿蛋白定量(24 h UPQ)、血浆白蛋白(ALB)、总胆固醇(TC)、三酰甘油(TAG)、血肌酐(Scr)]。结果治疗组总有效率为93.33%(28/30),对照组为70.00%(24/30),2组比较差异有统计学意义(P<0.05);治疗组复发率为3.33%(1/30),对照组为20.00%(6/30),2组比较差异有统计学意义(P<0.05)。2组治疗后中医证候总积分、24 h UPQ、TC、TAG均明显降低,ALB明显升高,与同组治疗前比较差异有统计学意义(P<0.01),且治疗组各项指标改善更明显,与对照组治疗后比较差异均有统计学意义(P<0.05或P<0.01)。2组治疗过程中心电图,血、粪常规,肝功能均未见明显异常。结论芪苓健脾配方颗粒可有效改善肾病综合征脾肾亏虚证患者的临床症状,降低复发率,且安全性高,值得临床推广应用。
