The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC)...The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC),for separating and recovering minerals of ultrafine sizes.展开更多
The Magnetohydrostatic Jigging Separation(MHSJS)is a method which makes use of the vibration of the solid particles obtained by applying a periodically changing magnetic Held to cause a periodically changing magnetic ...The Magnetohydrostatic Jigging Separation(MHSJS)is a method which makes use of the vibration of the solid particles obtained by applying a periodically changing magnetic Held to cause a periodically changing magnetic bouyancy to achieve an efficient separation of materials.展开更多
To address the alignment and measuring force problem in the segmenting-stitching technique for the circularity metrology of small cylindrical workpieces(diameter less than 1.5 mm and length less than 10 mm),a magnet c...To address the alignment and measuring force problem in the segmenting-stitching technique for the circularity metrology of small cylindrical workpieces(diameter less than 1.5 mm and length less than 10 mm),a magnet combination jig method is proposed.A small round magnet is attached between the round magnetic jig and small cylinder,and the other end of the small cylindrical workpiece is attached to some cylindrical magnets.Thus,the smaller cylinder can be put in the V-groove and measured successfully with the magnet combination.For verifying the advantage of the magnet combination jig,four measurement quality evaluations are proposed:the circumferential deviation of neighbor arc contours,radial deviation of neighbor arc contours,angle of inclination between the V-groove and small cylinder,and curvature of the obtained arc.The results show that the matching coefficient is enhanced by 98%,the Euclidean distance of overlap parts of neighbor arc contours is reduced by 68%,the position error is reduced 27%,and the average curvature of the arc contours is improved.It can be concluded that the measuring quality can be enhanced prominently by this magnet combination method for the segmenting-stitching method.展开更多
Hills Like White Elephants is a short story by Ernest Hemingway.It is a story about an American man and a pregnant girl.As the protagonist,Jig is considered as a submissive woman who has no definite views of her own.T...Hills Like White Elephants is a short story by Ernest Hemingway.It is a story about an American man and a pregnant girl.As the protagonist,Jig is considered as a submissive woman who has no definite views of her own.This paper attempts to analyze the changes of Jig's inner thought during the forty minutes of waiting the train.In addition to how the girl has grown up from a weak and dependent character into a brave and independent female after the painful struggle in the helpless and hopeless states under the great pressure of the man.展开更多
AIM: To compare the postoperative mechanical alignment achieved after total knee arthroplasty(TKA) using computer tomography(CT) based patient specific blocks(PSB) to conventional instruments(CI).METHODS: Total 80 kne...AIM: To compare the postoperative mechanical alignment achieved after total knee arthroplasty(TKA) using computer tomography(CT) based patient specific blocks(PSB) to conventional instruments(CI).METHODS: Total 80 knees were included in the study, with 40 knees in both the groups operated using PSB and CI. All the knees were performed by a single surgeon using the same cruciate sacrificing implants. In our study we used CT based PSB to compare with CI. Postoperative mechanical femoro-tibial angle(MFT angle) was measured on long leg x-rays using picture archiving and communication system(PACS). We compared mechanical alignment achieved using PSB and CI in TKA using statistical analysis.RESULTS: The PSB group(group 1) included 17 females and seven males while in CI group(group 2) there were 15 females and eight males. The mean age of patients in group 1 was 60.5 years and in group 2 it was 60.2 years. The mean postoperative MFT angle measured on long-leg radiographs in group 1 was 178.23°(SD = 2.67°, range: 171.9° to 182.5°) while in group 2, the mean MFT angle was 175.73°(SD = 3.62°, range: 166.0° to 179.8°). There was significant improvement in postoperative mechanical alignment(P value = 0.001), in PSB group compared to CI. Number of outliers were also found to be less in group operated with PSB(7 Knee) compared to those operated with CI(17 Knee).CONCLUSION: PSB improve mechanical alignment after total knee arthroplasty, compared to CI. This may lead to lower rates of revision in the PSB based TKA as compared to the conventional instrumentation.展开更多
On the basis of the first jig separation stage, the relational mathematical model related to ash content and the coutent of coal gangue with a density less than 1. 8 g/cm3 is established. With this model, the discharg...On the basis of the first jig separation stage, the relational mathematical model related to ash content and the coutent of coal gangue with a density less than 1. 8 g/cm3 is established. With this model, the discharge rate of reruse can be adjusted automatically and exactly by the conveutional PI regulator.The control stratedes for water capacity, air pressure, and feed capacity of the jig are introduced.Combined with the Expert system technology, jig expert system (JEP) is developed.展开更多
The basic method for designing and calculating reasonable jig cycle of movable screen jig was presented. The reasonabilityand reliability of designed jig cycle were verified by' means of the test on artificial mix...The basic method for designing and calculating reasonable jig cycle of movable screen jig was presented. The reasonabilityand reliability of designed jig cycle were verified by' means of the test on artificial mixed materials. An iron ore (12-100 mm) was treatedin tile TJD-75 model movable screen jig with the jig cycle. The good results were achieved. This would provide a reliable basis for designof commercial movable-screen jig.展开更多
This paper describes the design principles and functionality of a MicrocomputerSupervising Devlce(MSD)developed by us on a kind of Jig BoringMachine(JBM) Some Interference-free methods both in software and hardwareare...This paper describes the design principles and functionality of a MicrocomputerSupervising Devlce(MSD)developed by us on a kind of Jig BoringMachine(JBM) Some Interference-free methods both in software and hardwareare also presented.As our MSD implemented,machining the frames of raplerlooms on acommon JBM can meet the technological requlrements suceessfully.Thedesign ideas and the circuit principles of our MSD may also be applied to othersimllar machlnes.展开更多
Areas,such as coastal eastern Gulf of Maine(GOM),perceived to have low density of target fish species and having high density fixed gear,are often subject to low fishing pressure and not well monitored.This can lead t...Areas,such as coastal eastern Gulf of Maine(GOM),perceived to have low density of target fish species and having high density fixed gear,are often subject to low fishing pressure and not well monitored.This can lead to a shortage of information regarding the fine scale dynamics of groundfish populations.Sentinel surveys are commonly developed for such areas with little monitoring and commercial fishing activity as a cost effective way to collect relevant data for monitoring the dynamics of fish stocks.In this study,we outline an approach that utilizes information from other survey programs and pilot study for designing a survey that satisfies both the wish of fishermen participants to contribute their knowledge and experience in determining groundfish abundance and distribution and the statistical rigor required for stock assessments.Through an analysis of spatial and density distribution of groundfish populations based on data from pilot seasons of the sentinel survey and other monitoring programs,we designed a survey that has good spatial and temporal coverage and captures the spatial variability in species composition and size structure of key species.The spatially explicit data collected in the program can contribute to a better understanding of groundfish stock status in the eastern GOM.The approach,although developed for the coastal eastern GOM,is also applicable to other areas with similar issues.展开更多
This paper intends to analyze the similarities and differences between two female characters-Jig and Emily in Hemingway's "Hills like White Elephants" and Faulkner's A Rose for Emily, through the cha...This paper intends to analyze the similarities and differences between two female characters-Jig and Emily in Hemingway's "Hills like White Elephants" and Faulkner's A Rose for Emily, through the character's feature.展开更多
文摘The concept of the flowing film jigging was first applied to the flowing film concentration area.The flowingfilm jigging function is an important element of the new process,in jection-flowing film centrifugation(IFFC),for separating and recovering minerals of ultrafine sizes.
文摘The Magnetohydrostatic Jigging Separation(MHSJS)is a method which makes use of the vibration of the solid particles obtained by applying a periodically changing magnetic Held to cause a periodically changing magnetic bouyancy to achieve an efficient separation of materials.
基金supported by the National Defense Basic Scientific Research Program of China(Grant numbers JCKY2019427D002).
文摘To address the alignment and measuring force problem in the segmenting-stitching technique for the circularity metrology of small cylindrical workpieces(diameter less than 1.5 mm and length less than 10 mm),a magnet combination jig method is proposed.A small round magnet is attached between the round magnetic jig and small cylinder,and the other end of the small cylindrical workpiece is attached to some cylindrical magnets.Thus,the smaller cylinder can be put in the V-groove and measured successfully with the magnet combination.For verifying the advantage of the magnet combination jig,four measurement quality evaluations are proposed:the circumferential deviation of neighbor arc contours,radial deviation of neighbor arc contours,angle of inclination between the V-groove and small cylinder,and curvature of the obtained arc.The results show that the matching coefficient is enhanced by 98%,the Euclidean distance of overlap parts of neighbor arc contours is reduced by 68%,the position error is reduced 27%,and the average curvature of the arc contours is improved.It can be concluded that the measuring quality can be enhanced prominently by this magnet combination method for the segmenting-stitching method.
文摘Hills Like White Elephants is a short story by Ernest Hemingway.It is a story about an American man and a pregnant girl.As the protagonist,Jig is considered as a submissive woman who has no definite views of her own.This paper attempts to analyze the changes of Jig's inner thought during the forty minutes of waiting the train.In addition to how the girl has grown up from a weak and dependent character into a brave and independent female after the painful struggle in the helpless and hopeless states under the great pressure of the man.
文摘AIM: To compare the postoperative mechanical alignment achieved after total knee arthroplasty(TKA) using computer tomography(CT) based patient specific blocks(PSB) to conventional instruments(CI).METHODS: Total 80 knees were included in the study, with 40 knees in both the groups operated using PSB and CI. All the knees were performed by a single surgeon using the same cruciate sacrificing implants. In our study we used CT based PSB to compare with CI. Postoperative mechanical femoro-tibial angle(MFT angle) was measured on long leg x-rays using picture archiving and communication system(PACS). We compared mechanical alignment achieved using PSB and CI in TKA using statistical analysis.RESULTS: The PSB group(group 1) included 17 females and seven males while in CI group(group 2) there were 15 females and eight males. The mean age of patients in group 1 was 60.5 years and in group 2 it was 60.2 years. The mean postoperative MFT angle measured on long-leg radiographs in group 1 was 178.23°(SD = 2.67°, range: 171.9° to 182.5°) while in group 2, the mean MFT angle was 175.73°(SD = 3.62°, range: 166.0° to 179.8°). There was significant improvement in postoperative mechanical alignment(P value = 0.001), in PSB group compared to CI. Number of outliers were also found to be less in group operated with PSB(7 Knee) compared to those operated with CI(17 Knee).CONCLUSION: PSB improve mechanical alignment after total knee arthroplasty, compared to CI. This may lead to lower rates of revision in the PSB based TKA as compared to the conventional instrumentation.
文摘On the basis of the first jig separation stage, the relational mathematical model related to ash content and the coutent of coal gangue with a density less than 1. 8 g/cm3 is established. With this model, the discharge rate of reruse can be adjusted automatically and exactly by the conveutional PI regulator.The control stratedes for water capacity, air pressure, and feed capacity of the jig are introduced.Combined with the Expert system technology, jig expert system (JEP) is developed.
文摘The basic method for designing and calculating reasonable jig cycle of movable screen jig was presented. The reasonabilityand reliability of designed jig cycle were verified by' means of the test on artificial mixed materials. An iron ore (12-100 mm) was treatedin tile TJD-75 model movable screen jig with the jig cycle. The good results were achieved. This would provide a reliable basis for designof commercial movable-screen jig.
文摘This paper describes the design principles and functionality of a MicrocomputerSupervising Devlce(MSD)developed by us on a kind of Jig BoringMachine(JBM) Some Interference-free methods both in software and hardwareare also presented.As our MSD implemented,machining the frames of raplerlooms on acommon JBM can meet the technological requlrements suceessfully.Thedesign ideas and the circuit principles of our MSD may also be applied to othersimllar machlnes.
文摘Areas,such as coastal eastern Gulf of Maine(GOM),perceived to have low density of target fish species and having high density fixed gear,are often subject to low fishing pressure and not well monitored.This can lead to a shortage of information regarding the fine scale dynamics of groundfish populations.Sentinel surveys are commonly developed for such areas with little monitoring and commercial fishing activity as a cost effective way to collect relevant data for monitoring the dynamics of fish stocks.In this study,we outline an approach that utilizes information from other survey programs and pilot study for designing a survey that satisfies both the wish of fishermen participants to contribute their knowledge and experience in determining groundfish abundance and distribution and the statistical rigor required for stock assessments.Through an analysis of spatial and density distribution of groundfish populations based on data from pilot seasons of the sentinel survey and other monitoring programs,we designed a survey that has good spatial and temporal coverage and captures the spatial variability in species composition and size structure of key species.The spatially explicit data collected in the program can contribute to a better understanding of groundfish stock status in the eastern GOM.The approach,although developed for the coastal eastern GOM,is also applicable to other areas with similar issues.
文摘This paper intends to analyze the similarities and differences between two female characters-Jig and Emily in Hemingway's "Hills like White Elephants" and Faulkner's A Rose for Emily, through the character's feature.
