A new hybrid model rotor flux observer, based on a new voltage model, is presented. In the first place, the voltage model of an induction machine was constructed by using the modeling method discussed in this paper an...A new hybrid model rotor flux observer, based on a new voltage model, is presented. In the first place, the voltage model of an induction machine was constructed by using the modeling method discussed in this paper and then the current model using a flux feedback was adopted in this flux observer. Secondly, the two models were com- bined via a filter and then the rotor flux observer was established. In the M-T synchronous coordinate, the observer was analyzed theoretically and several important functions were derived. A comparison between the observer and the traditional models was made using Matlab software. The simulation results show that the observer model had a better performance than the traditional model.展开更多
Hybrid rice combination Xieyou 46 was first bred by combining CMS line Xieqingzao A with restorer line Milyang 46 at CNRRI in 1983. It can be used as single season or late season new indica hybrid rice combination. Ha...Hybrid rice combination Xieyou 46 was first bred by combining CMS line Xieqingzao A with restorer line Milyang 46 at CNRRI in 1983. It can be used as single season or late season new indica hybrid rice combination. Having passed provincial level yield trials in the following years, it was released in 1990 with the permission of Zhejiang Provincial Government, later on recommended as one of the top commercial hybrid rice combination by China State Science and Technology Commission. By the end of 1992, Xieyou 46 has been planted as a late season or single season hybrid ricc combination along the middle and lower reaches of the Yangtze River, and the planting area has reached 3.35 million ha. It has become one of the most important late season hybrid rice combinations in Zhejiang Province. Characteristics of Xieyou 46: Xieyou 46 has a suitable growth duration of 125-130 d as late season rice or 127-134 d as single season rice, 2-3 d shorter than those of Shanyou 6. It bas a compact plant type, high tilleri展开更多
Building prototyping has regularly been used in building performance analyses with statistically feasible models.The novelty of this research involves a new hybrid approach combining stratified sampling and k-means cl...Building prototyping has regularly been used in building performance analyses with statistically feasible models.The novelty of this research involves a new hybrid approach combining stratified sampling and k-means clustering to establish building geometry prototypes.The research focuses on residential buildings in Ningbo,China.Seventeen small residential districts(SRDs)containing 367 residential buildings were systemically selected for survey and data collection.The stratified sampling used building construction year as the main parameter to generate stratification.Floor numbers,shape coefficients,floor areas,and window-to-wall ratios were used as the four observations for k-means clustering.Based on this new approach,nine building geometry prototypes were identified and modelled.These statistically representative prototypes provide building geometrical information and characteristic-based evaluations for subsequent building performance analysis.展开更多
[Objective] The aim of this study was to investigate the storage durability of a new line of endurable storage hybrid rice Chucangyou No.1 selected by endurable storage genes of Yunhui 290.[Method] Agronomic character...[Objective] The aim of this study was to investigate the storage durability of a new line of endurable storage hybrid rice Chucangyou No.1 selected by endurable storage genes of Yunhui 290.[Method] Agronomic characters of the new line and the control II you 838 and Shanyou 63 were comparatively studied,and storage durability of the new line and indica,japonica or hybrid rice were also comparatively analyzed by the accelerated ageing test.[Result] Agronomic characters of the new line were excellent,and germination rate in the artificial accelerated ageing test was significantly higher than those in other materials.[Conclusion] Chucangyou No.1 has the better storage durability,which can be used in large scale of extention.展开更多
Both new plant type (NPT) and intersubspecific hybrid rice (IHR) had large sink size (total number of spikelets per m2), however, poor grain filling limited their potential in the grain yield. Compared to the three-li...Both new plant type (NPT) and intersubspecific hybrid rice (IHR) had large sink size (total number of spikelets per m2), however, poor grain filling limited their potential in the grain yield. Compared to the three-line indica hybrid of Shanyou 63 (CK), NPT and IHR showed higher photosynthetic potential, higher dry matter accumulation and higher ratio of dry weight to spikelets (total dry wt./total number of spikelets) from heading to harvest. But both exhibited a low export percentage and transfer ratio of assimilates, low partitioning of 14C to grains from labeled flag leaves, low harvest indices and low physiological activities (IAA content and activities of ATPase and starch synthase) of grains at early grain-filling stage. The physiological activities of grains at early filling stage were significantly correlated with the export percentage and transfer ratio of assimilates, ripened-grain percentage and grain plumpness (r = 0.85 - 0.95). The source-sink ratio (dry matter wt./spikelet and nonstructural carbohydrate/spikelet) at heading was positively correlated with physiological activities of grains (r = 0. 84 - 0. 97 ). It is suggested that low physiological activities of grains at early filling stage is attributed to low source-sink ratio at heading, and the low sink activity weakens the ability to remobilize assimilates into grains, and leads to poor grain filling in NPT and IHR.展开更多
Yields and agronomic characters of 35 new hybrids were tested at Pine Bluff, Arkansas in 2013. These hybrids were developed from 7 female parent sterile lines, UP-1s, UP-3s, 100s, 101s, 105s, 111s, and 113A, and 5 mal...Yields and agronomic characters of 35 new hybrids were tested at Pine Bluff, Arkansas in 2013. These hybrids were developed from 7 female parent sterile lines, UP-1s, UP-3s, 100s, 101s, 105s, 111s, and 113A, and 5 male parent restorer lines, PB2, PB5, PB12, PB13, and PB18. The inbred variety Francis, which is a popular variety in the rice production, was used as the check (CK). Results showed that the yields of 10 hybrids were 20.3% - 31.7% higher than that of CKFrancis. The yields of other 18 hybrids were 10.1% - 19.4% higher than CK, and the yields of rest of the hybrids were 2.5% - 9.2% higher than CK. Hybrid UP-3s/PB5 had the highest yield, 12,983.8 kg/hectare and over check by 31.7%. The yield of hybrid UP-3s/PB18 and 115A/PB18 were 12,333.7 kg/hectare and over check 25%. The yields of hybrid UP-1s/PB12 was 12,324.6 kg//hectare and over check 24.9%. The sterile lines UP-3s, 113A, 105s, and 101s have good combinability and the average grain yields of their hybrids were over CKby 21.5%, 20.34%, 17.2% and 16.2%, respectively. The restorer lines PB18, PB5, and PB12 have good combinability and the average grain yields of their hybrids were over CKby 19.9%, 18.4% and 16.2%, respectively. These results indicated that these top hybrids and their parents of the sterile lines and restorer lines might be used in the hybrid rice breeding and production in the future.展开更多
In current research, MWCNT-SiO2/oil hybrid nano-lubricant viscosity is experimentally examined. By dispersing 0.05%, 0.1%, 0.2%, 0.4%, 0.8% and 1% volume of MWCNTs and SiO2 nanopartide into the engine oil SAE 20W50, t...In current research, MWCNT-SiO2/oil hybrid nano-lubricant viscosity is experimentally examined. By dispersing 0.05%, 0.1%, 0.2%, 0.4%, 0.8% and 1% volume of MWCNTs and SiO2 nanopartide into the engine oil SAE 20W50, the temperature and solid volume fraction consequences were studied. At 40 to 100 ℃ temperature, the viscosities were assessed. The results indicated Newtonian behavior for the hybrid nano-lubricant. Moreover, solid volume fraction augmentation and temperature enhanced the viscosity enhancement of hybrid nano-lubricant. At highest solid volume fraction and temperature, nano-lubricant viscosity was 171% greater compared to pure 20W50. Existed models lack the ability to predict the hybrid nano-lubricant viscosity. Thus, a new correlation regarding solid volume fraction and temperature was suggested with R-squared of 0.9943.展开更多
There is a close relationship between the hy—brid rice production and seed purity.Two-linehybrid rice with higher heterosis is producedthrough the hybridization between a photo-thermo sensitive genetic male sterile(G...There is a close relationship between the hy—brid rice production and seed purity.Two-linehybrid rice with higher heterosis is producedthrough the hybridization between a photo-thermo sensitive genetic male sterile(GMS) rice line and a paternal variety.But the fertili-展开更多
Hybrid rice Shan-You 10 was first madein 1982 by combining Zhen-Shan 97A,a wildcytoplasmic male sterile line used widely inChina,with Milyang 46 introduced from IRRIin 1981.In the following years,this combi-nation was...Hybrid rice Shan-You 10 was first madein 1982 by combining Zhen-Shan 97A,a wildcytoplasmic male sterile line used widely inChina,with Milyang 46 introduced from IRRIin 1981.In the following years,this combi-nation was tested and passed through differentformal tests including yield potential tests,展开更多
基金Projects (00KJD470002, 03KJD470036) supported by the Natural Science Foundation of the Bureau of Education Jiangsu Province
文摘A new hybrid model rotor flux observer, based on a new voltage model, is presented. In the first place, the voltage model of an induction machine was constructed by using the modeling method discussed in this paper and then the current model using a flux feedback was adopted in this flux observer. Secondly, the two models were com- bined via a filter and then the rotor flux observer was established. In the M-T synchronous coordinate, the observer was analyzed theoretically and several important functions were derived. A comparison between the observer and the traditional models was made using Matlab software. The simulation results show that the observer model had a better performance than the traditional model.
文摘Hybrid rice combination Xieyou 46 was first bred by combining CMS line Xieqingzao A with restorer line Milyang 46 at CNRRI in 1983. It can be used as single season or late season new indica hybrid rice combination. Having passed provincial level yield trials in the following years, it was released in 1990 with the permission of Zhejiang Provincial Government, later on recommended as one of the top commercial hybrid rice combination by China State Science and Technology Commission. By the end of 1992, Xieyou 46 has been planted as a late season or single season hybrid ricc combination along the middle and lower reaches of the Yangtze River, and the planting area has reached 3.35 million ha. It has become one of the most important late season hybrid rice combinations in Zhejiang Province. Characteristics of Xieyou 46: Xieyou 46 has a suitable growth duration of 125-130 d as late season rice or 127-134 d as single season rice, 2-3 d shorter than those of Shanyou 6. It bas a compact plant type, high tilleri
基金sponsored by the Ningbo Natural Science Funding Scheme(Project code:2019A610393)The Zhejiang Provincial Department of Science and Technology is acknowledged for this research under its Provincial Key Laboratory Programme(2020E10018).
文摘Building prototyping has regularly been used in building performance analyses with statistically feasible models.The novelty of this research involves a new hybrid approach combining stratified sampling and k-means clustering to establish building geometry prototypes.The research focuses on residential buildings in Ningbo,China.Seventeen small residential districts(SRDs)containing 367 residential buildings were systemically selected for survey and data collection.The stratified sampling used building construction year as the main parameter to generate stratification.Floor numbers,shape coefficients,floor areas,and window-to-wall ratios were used as the four observations for k-means clustering.Based on this new approach,nine building geometry prototypes were identified and modelled.These statistically representative prototypes provide building geometrical information and characteristic-based evaluations for subsequent building performance analysis.
基金Support by National Key Technology R&D Program(2006BAD01A01-5)Science and Technological Fund of Anhui Province for Outstanding Youth(08040106802)~~
文摘[Objective] The aim of this study was to investigate the storage durability of a new line of endurable storage hybrid rice Chucangyou No.1 selected by endurable storage genes of Yunhui 290.[Method] Agronomic characters of the new line and the control II you 838 and Shanyou 63 were comparatively studied,and storage durability of the new line and indica,japonica or hybrid rice were also comparatively analyzed by the accelerated ageing test.[Result] Agronomic characters of the new line were excellent,and germination rate in the artificial accelerated ageing test was significantly higher than those in other materials.[Conclusion] Chucangyou No.1 has the better storage durability,which can be used in large scale of extention.
文摘Both new plant type (NPT) and intersubspecific hybrid rice (IHR) had large sink size (total number of spikelets per m2), however, poor grain filling limited their potential in the grain yield. Compared to the three-line indica hybrid of Shanyou 63 (CK), NPT and IHR showed higher photosynthetic potential, higher dry matter accumulation and higher ratio of dry weight to spikelets (total dry wt./total number of spikelets) from heading to harvest. But both exhibited a low export percentage and transfer ratio of assimilates, low partitioning of 14C to grains from labeled flag leaves, low harvest indices and low physiological activities (IAA content and activities of ATPase and starch synthase) of grains at early grain-filling stage. The physiological activities of grains at early filling stage were significantly correlated with the export percentage and transfer ratio of assimilates, ripened-grain percentage and grain plumpness (r = 0.85 - 0.95). The source-sink ratio (dry matter wt./spikelet and nonstructural carbohydrate/spikelet) at heading was positively correlated with physiological activities of grains (r = 0. 84 - 0. 97 ). It is suggested that low physiological activities of grains at early filling stage is attributed to low source-sink ratio at heading, and the low sink activity weakens the ability to remobilize assimilates into grains, and leads to poor grain filling in NPT and IHR.
文摘Yields and agronomic characters of 35 new hybrids were tested at Pine Bluff, Arkansas in 2013. These hybrids were developed from 7 female parent sterile lines, UP-1s, UP-3s, 100s, 101s, 105s, 111s, and 113A, and 5 male parent restorer lines, PB2, PB5, PB12, PB13, and PB18. The inbred variety Francis, which is a popular variety in the rice production, was used as the check (CK). Results showed that the yields of 10 hybrids were 20.3% - 31.7% higher than that of CKFrancis. The yields of other 18 hybrids were 10.1% - 19.4% higher than CK, and the yields of rest of the hybrids were 2.5% - 9.2% higher than CK. Hybrid UP-3s/PB5 had the highest yield, 12,983.8 kg/hectare and over check by 31.7%. The yield of hybrid UP-3s/PB18 and 115A/PB18 were 12,333.7 kg/hectare and over check 25%. The yields of hybrid UP-1s/PB12 was 12,324.6 kg//hectare and over check 24.9%. The sterile lines UP-3s, 113A, 105s, and 101s have good combinability and the average grain yields of their hybrids were over CKby 21.5%, 20.34%, 17.2% and 16.2%, respectively. The restorer lines PB18, PB5, and PB12 have good combinability and the average grain yields of their hybrids were over CKby 19.9%, 18.4% and 16.2%, respectively. These results indicated that these top hybrids and their parents of the sterile lines and restorer lines might be used in the hybrid rice breeding and production in the future.
文摘In current research, MWCNT-SiO2/oil hybrid nano-lubricant viscosity is experimentally examined. By dispersing 0.05%, 0.1%, 0.2%, 0.4%, 0.8% and 1% volume of MWCNTs and SiO2 nanopartide into the engine oil SAE 20W50, the temperature and solid volume fraction consequences were studied. At 40 to 100 ℃ temperature, the viscosities were assessed. The results indicated Newtonian behavior for the hybrid nano-lubricant. Moreover, solid volume fraction augmentation and temperature enhanced the viscosity enhancement of hybrid nano-lubricant. At highest solid volume fraction and temperature, nano-lubricant viscosity was 171% greater compared to pure 20W50. Existed models lack the ability to predict the hybrid nano-lubricant viscosity. Thus, a new correlation regarding solid volume fraction and temperature was suggested with R-squared of 0.9943.
文摘There is a close relationship between the hy—brid rice production and seed purity.Two-linehybrid rice with higher heterosis is producedthrough the hybridization between a photo-thermo sensitive genetic male sterile(GMS) rice line and a paternal variety.But the fertili-
文摘Hybrid rice Shan-You 10 was first madein 1982 by combining Zhen-Shan 97A,a wildcytoplasmic male sterile line used widely inChina,with Milyang 46 introduced from IRRIin 1981.In the following years,this combi-nation was tested and passed through differentformal tests including yield potential tests,
