Objective:To investigate the anti-inflammatory and analgesic effects of the ethanol extract of leaves of Helianthus annus L.(H.annus) in acclimatized Wistar rats.Methods:It was undertaken using the albumin induced paw...Objective:To investigate the anti-inflammatory and analgesic effects of the ethanol extract of leaves of Helianthus annus L.(H.annus) in acclimatized Wistar rats.Methods:It was undertaken using the albumin induced paw edema model of inflammation as well as both the hotplate and tail immersion analgesic test methods.Doses of the extract tested in experimental rats were 0.5 g/kg,2 g/kg and 4 g/kg while negative and positive control rats received distilled water and indomethacin respectively.Results:It was shown that treatment with the tested doses of the extract effectively inhibited paw edema induced by egg albumin.This effect was comparable if not better than the observations made in rats treated with 10 mg/kg of indomethacin orally.Treatment with the extract was also observed to have significantly increased the mean tolerance time of rats to thermal noxious stimuli compared to control animals that had distilled water and appeared to be more effective than 10 mg/kg of indomethacin treatment.Conclusions: These observations confirmed the presence of a strong anti-inflammatory and anti-noiciceptive activity in the ethanol extract of the leaves of H.annus and therefore validated the folkloric use of the leaves of this plant in treatment of pro-inflammatory,post traumatic situations.展开更多
Objective:To evaluate the effects of ethanol extract of leaves of Helianthus annus(H.annus) on the fecundity of Wistar rats.Methods:Forty(20 male and 20 female) Wistar rats,grouped into control,ethanol extract treated...Objective:To evaluate the effects of ethanol extract of leaves of Helianthus annus(H.annus) on the fecundity of Wistar rats.Methods:Forty(20 male and 20 female) Wistar rats,grouped into control,ethanol extract treated rats and untreated,were used for the study.Treated rats had 0.5 g/kg of ethanol extract orally for 2 weeks;control rats had 5%alcoholic water(solvent);and untreated rats had their normal feed and clean drinking water.Following treatment,the animals were sub-grouped into 5 mating groups to observe the coital frequency,pregnancy rate and average number of pups per group in pairs.Results:The results showed that coital frequency was unaffected by the extract treatment but pregnancy rate and number of pups per rat and per group were reduced significantly in groupsⅡ,ⅢandⅣcompared to those of groupⅠandⅤrats which were not treated with the ethanol extract of leaves of H.annus.Conclusions:The histodegenerative in the gonads reportedly induced by this ethanol extract in previous studies may be responsible for the reduced fecundity observed in treated adult rats.展开更多
Chemical investigation of Erigeron annus afforded two new eudesmenes, which were identified as 1β, 5α-dihydroxyeudesma-4(15)-en (1) and 1β, 7α-dihydroxyeudesma-4(15)-en (2). Their structures were established by ...Chemical investigation of Erigeron annus afforded two new eudesmenes, which were identified as 1β, 5α-dihydroxyeudesma-4(15)-en (1) and 1β, 7α-dihydroxyeudesma-4(15)-en (2). Their structures were established by spectroscopic methods including 2D NMR experiments.展开更多
关于向日葵瘦果颜色的分类,国内尚未见报道,美国的JACKT·CARTER在SUNFLOWER·SCIENCE AND TECHNOLOGY一书中,把瘦果颜色分为12类。本文根据我国向日葵的颜色特征,对700余份品种资源进行了详细的观察、整理、归类,首次明确提出...关于向日葵瘦果颜色的分类,国内尚未见报道,美国的JACKT·CARTER在SUNFLOWER·SCIENCE AND TECHNOLOGY一书中,把瘦果颜色分为12类。本文根据我国向日葵的颜色特征,对700余份品种资源进行了详细的观察、整理、归类,首次明确提出了3大类16种颜色的分类标准。展开更多
One of the difficulties in the implementation of agroenergy’s cropping is the growing area competition with subsistence crops. Few studies have been conducted to show the efficiency of intercropping between plants of...One of the difficulties in the implementation of agroenergy’s cropping is the growing area competition with subsistence crops. Few studies have been conducted to show the efficiency of intercropping between plants of energy’s potential with cultures of economic sustainability. The objective of this study was to evaluate the effectiveness of intercropping sunflower cultivars with corn and beans, in the initial growth under localized irrigation. The experiment was conducted at the end of the year 2012, in an area of 950 m2, located in the Campus II-UEPB, Lagoa Seca, Paraíba. The irrigation system was managed based on the Reference Evapotranspiration (ETo), calculated by the Penmann-Monteith Method with data obtained locally. The experimental design was a randomized blocks factorial (2 × 4) × 3, with treatments combining two varieties of sunflower in four plantation systems: single or isolated, intercropped with maize, with bean and with caupi. Each plot consisted of four rows of sunflowers in spacing 0.3 × 0.7 m and length of 5 m, interspersed with rows of beans or corn, except in the isolated system. The central rows of sunflowers were used to measure the following growth characteristics: plant height, stem diameter, number of leaves and leaf área. Data were subjected to analysis of variance by F test and the means compared by Tukey test at 5% probability. The diversification of sunflower varieties promoted differences in initial growth, regardless of the cropping system. There was significant effect at 15 DAS, where the sunflower variety “Advanta CF101” had higher plants than the variety “Hélio 253” at 40 DAS;the variety “Hélio 253” had a stem diameter greater than the “Advanta CF101”.展开更多
Sunflower petal is one of the parts of the sunflower which has drawn attention and has several applications these days.These applications justify getting information about physical properties,mechanical properties,dry...Sunflower petal is one of the parts of the sunflower which has drawn attention and has several applications these days.These applications justify getting information about physical properties,mechanical properties,drying trends,etc.in order to design new machines and use new methods to harvest or dry the sunflower petals.For three varieties of sunflower,picking force of petals was measured;number of petals of each head was counted;unit mass and 1000-unit mass of fresh petals were measured and length,width,and projected area of fresh petals were calculated based on image processing technique;frequency distributions of these parameters were modeled using statistical distribution models namely Gamma,Generalized Extreme Value(G.E.V),Lognormal,and Weibull.Results of picking force showed that with increasing number of days after appearing the first petal on each head from 5 to 14 and decreasing loading rate from 150 gmin^-1 to 50 g min^-1 values of picking force were decreased for three varieties,but diameter of sunflower head had different effects on picking force for each variety.Length,width,and number of petals of Dorsefid variety ranged from 38.52 to 95.44 mm,3.80 to 9.28mm and 29 to 89,respectively.The corresponding values ranged from 34.19 to 88.18 mm,4.28 to 10.60 mm and 21 to 89,respectively for Shamshiri variety and ranged from 44.47 to 114.63 mm,7.03 to 20.31 mm and 29 to 89 for Sirena variety.Results of frequency distribution modeling indicated that in most cases,G.E.V and Weibull distributions had better performance than other distributions.展开更多
Ivisited the Province of Latina, Italy as a member of the delegation of the Caohu City Government of Anhui Province for the signing of an agreement on the establishment of friendship-
NBS reportTo calculate the GDP growth,the NationalBureau of Statistics(NBS)of China alwaysreported the monthly production(orindustrial)value added,breakdown by 40 in-dustrial sectors,in which the chemical indus-try ar...NBS reportTo calculate the GDP growth,the NationalBureau of Statistics(NBS)of China alwaysreported the monthly production(orindustrial)value added,breakdown by 40 in-dustrial sectors,in which the chemical indus-try are divided into seven sectors.The pro-duction value added for the chemical industryin the first five months increased 7.5% overthe year-ago period,with a 12.6% growth inMay alone.展开更多
Shenhua Group Co., Ltd. held a ceremonyfor breaking ground a coal-to-gas plant inErdos of Inner Mongolia on April 8th.The project phase I, which is estimated tocost RMB 14 billion, is scheduled for startupby 2012, tar...Shenhua Group Co., Ltd. held a ceremonyfor breaking ground a coal-to-gas plant inErdos of Inner Mongolia on April 8th.The project phase I, which is estimated tocost RMB 14 billion, is scheduled for startupby 2012, targeting for producing 2展开更多
China Announces White Paper on Climate Change The State Council Information Center,PR China announced on October 29th the whitepaper-China’s Policies and Actions for Ad-dressing
Guizhou Kailin Ready to Start upYellow Phosphorus ProjectOn September 1st, Guizhou Kailin (Group) Co., Ltd. (GuizhouKailin) basically installed the key body of yellow phosphorusfurnace of its yellow phosphorus debottl...Guizhou Kailin Ready to Start upYellow Phosphorus ProjectOn September 1st, Guizhou Kailin (Group) Co., Ltd. (GuizhouKailin) basically installed the key body of yellow phosphorusfurnace of its yellow phosphorus debottlenecking project thatmatching its advanced phosphogypsum production line.The debottlenecking project is ready to run wet commissioningin late September and come on stream in late October of2009. Construction on the project was started in October 2008.The project with an investment of RMB182.45 millioncovers five sets of energy-saving yellow phosphorus pro-展开更多
On February 22nd,2008 China began the construction work on its second west-east natural gas transmission pipeline.It will mainly transmit natural gas from Turkmenistan and China’s Xinjiang to the Yangtze River and Pe...On February 22nd,2008 China began the construction work on its second west-east natural gas transmission pipeline.It will mainly transmit natural gas from Turkmenistan and China’s Xinjiang to the Yangtze River and Pearl River deltas,展开更多
文摘Objective:To investigate the anti-inflammatory and analgesic effects of the ethanol extract of leaves of Helianthus annus L.(H.annus) in acclimatized Wistar rats.Methods:It was undertaken using the albumin induced paw edema model of inflammation as well as both the hotplate and tail immersion analgesic test methods.Doses of the extract tested in experimental rats were 0.5 g/kg,2 g/kg and 4 g/kg while negative and positive control rats received distilled water and indomethacin respectively.Results:It was shown that treatment with the tested doses of the extract effectively inhibited paw edema induced by egg albumin.This effect was comparable if not better than the observations made in rats treated with 10 mg/kg of indomethacin orally.Treatment with the extract was also observed to have significantly increased the mean tolerance time of rats to thermal noxious stimuli compared to control animals that had distilled water and appeared to be more effective than 10 mg/kg of indomethacin treatment.Conclusions: These observations confirmed the presence of a strong anti-inflammatory and anti-noiciceptive activity in the ethanol extract of the leaves of H.annus and therefore validated the folkloric use of the leaves of this plant in treatment of pro-inflammatory,post traumatic situations.
文摘Objective:To evaluate the effects of ethanol extract of leaves of Helianthus annus(H.annus) on the fecundity of Wistar rats.Methods:Forty(20 male and 20 female) Wistar rats,grouped into control,ethanol extract treated rats and untreated,were used for the study.Treated rats had 0.5 g/kg of ethanol extract orally for 2 weeks;control rats had 5%alcoholic water(solvent);and untreated rats had their normal feed and clean drinking water.Following treatment,the animals were sub-grouped into 5 mating groups to observe the coital frequency,pregnancy rate and average number of pups per group in pairs.Results:The results showed that coital frequency was unaffected by the extract treatment but pregnancy rate and number of pups per rat and per group were reduced significantly in groupsⅡ,ⅢandⅣcompared to those of groupⅠandⅤrats which were not treated with the ethanol extract of leaves of H.annus.Conclusions:The histodegenerative in the gonads reportedly induced by this ethanol extract in previous studies may be responsible for the reduced fecundity observed in treated adult rats.
基金supported by the NNSFC(No.20372029 and No.20021001-QT Program)
文摘Chemical investigation of Erigeron annus afforded two new eudesmenes, which were identified as 1β, 5α-dihydroxyeudesma-4(15)-en (1) and 1β, 7α-dihydroxyeudesma-4(15)-en (2). Their structures were established by spectroscopic methods including 2D NMR experiments.
文摘One of the difficulties in the implementation of agroenergy’s cropping is the growing area competition with subsistence crops. Few studies have been conducted to show the efficiency of intercropping between plants of energy’s potential with cultures of economic sustainability. The objective of this study was to evaluate the effectiveness of intercropping sunflower cultivars with corn and beans, in the initial growth under localized irrigation. The experiment was conducted at the end of the year 2012, in an area of 950 m2, located in the Campus II-UEPB, Lagoa Seca, Paraíba. The irrigation system was managed based on the Reference Evapotranspiration (ETo), calculated by the Penmann-Monteith Method with data obtained locally. The experimental design was a randomized blocks factorial (2 × 4) × 3, with treatments combining two varieties of sunflower in four plantation systems: single or isolated, intercropped with maize, with bean and with caupi. Each plot consisted of four rows of sunflowers in spacing 0.3 × 0.7 m and length of 5 m, interspersed with rows of beans or corn, except in the isolated system. The central rows of sunflowers were used to measure the following growth characteristics: plant height, stem diameter, number of leaves and leaf área. Data were subjected to analysis of variance by F test and the means compared by Tukey test at 5% probability. The diversification of sunflower varieties promoted differences in initial growth, regardless of the cropping system. There was significant effect at 15 DAS, where the sunflower variety “Advanta CF101” had higher plants than the variety “Hélio 253” at 40 DAS;the variety “Hélio 253” had a stem diameter greater than the “Advanta CF101”.
文摘Sunflower petal is one of the parts of the sunflower which has drawn attention and has several applications these days.These applications justify getting information about physical properties,mechanical properties,drying trends,etc.in order to design new machines and use new methods to harvest or dry the sunflower petals.For three varieties of sunflower,picking force of petals was measured;number of petals of each head was counted;unit mass and 1000-unit mass of fresh petals were measured and length,width,and projected area of fresh petals were calculated based on image processing technique;frequency distributions of these parameters were modeled using statistical distribution models namely Gamma,Generalized Extreme Value(G.E.V),Lognormal,and Weibull.Results of picking force showed that with increasing number of days after appearing the first petal on each head from 5 to 14 and decreasing loading rate from 150 gmin^-1 to 50 g min^-1 values of picking force were decreased for three varieties,but diameter of sunflower head had different effects on picking force for each variety.Length,width,and number of petals of Dorsefid variety ranged from 38.52 to 95.44 mm,3.80 to 9.28mm and 29 to 89,respectively.The corresponding values ranged from 34.19 to 88.18 mm,4.28 to 10.60 mm and 21 to 89,respectively for Shamshiri variety and ranged from 44.47 to 114.63 mm,7.03 to 20.31 mm and 29 to 89 for Sirena variety.Results of frequency distribution modeling indicated that in most cases,G.E.V and Weibull distributions had better performance than other distributions.
文摘Ivisited the Province of Latina, Italy as a member of the delegation of the Caohu City Government of Anhui Province for the signing of an agreement on the establishment of friendship-
文摘NBS reportTo calculate the GDP growth,the NationalBureau of Statistics(NBS)of China alwaysreported the monthly production(orindustrial)value added,breakdown by 40 in-dustrial sectors,in which the chemical indus-try are divided into seven sectors.The pro-duction value added for the chemical industryin the first five months increased 7.5% overthe year-ago period,with a 12.6% growth inMay alone.
文摘Shenhua Group Co., Ltd. held a ceremonyfor breaking ground a coal-to-gas plant inErdos of Inner Mongolia on April 8th.The project phase I, which is estimated tocost RMB 14 billion, is scheduled for startupby 2012, targeting for producing 2
文摘China Announces White Paper on Climate Change The State Council Information Center,PR China announced on October 29th the whitepaper-China’s Policies and Actions for Ad-dressing
文摘Guizhou Kailin Ready to Start upYellow Phosphorus ProjectOn September 1st, Guizhou Kailin (Group) Co., Ltd. (GuizhouKailin) basically installed the key body of yellow phosphorusfurnace of its yellow phosphorus debottlenecking project thatmatching its advanced phosphogypsum production line.The debottlenecking project is ready to run wet commissioningin late September and come on stream in late October of2009. Construction on the project was started in October 2008.The project with an investment of RMB182.45 millioncovers five sets of energy-saving yellow phosphorus pro-
文摘On February 22nd,2008 China began the construction work on its second west-east natural gas transmission pipeline.It will mainly transmit natural gas from Turkmenistan and China’s Xinjiang to the Yangtze River and Pearl River deltas,
