Obtaining the vertical distribution profile of trace gas is of great significance for studying the diffusion procedure of air pollution.In this article,a look-up table method based on multi-axis differential optical a...Obtaining the vertical distribution profile of trace gas is of great significance for studying the diffusion procedure of air pollution.In this article,a look-up table method based on multi-axis differential optical absorption spectroscopy(MAX-DOAS)technology is established for retrieving the tropospheric NO_(2) vertical distribution profiles.This method retrieves the aerosol extinction profiles with minimum cost function.Then,the aerosol extinction profiles and the atmospheric radiation transfer model(RTM)are employed to establish the look-up table for retrieving the NO_(2) vertical column densities(VCDs)and profiles.The measured NO_(2) differential slant column densities(DSCDs)are compared with the NO_(2) DSCDs simulated by the atmospheric RTM,and the NO_(2) VCDs,the weight factor of NO_(2) in the boundary layer,and the boundary layer height are obtained by the minimization process.The look-up table is established to retrieve NO_(2) VCDs based on MAX-DOAS measurements in Huaibei area,and the results are compared with the data from Copernicus Atmospheric Monitoring Service(CAMS)model.It is found that there are nearly consistent and the correlation coefficient R2 is more than 0.86.The results show that this technology provides a more convenient and accurate retrieval method for the stereoscopic monitoring of atmospheric environment.展开更多
In addition to the conventional methods of the calibration model construction, such as PCR （principal components regression） and PLS （partial least-squares）, a MPM （mathematical programming method） is developed ...In addition to the conventional methods of the calibration model construction, such as PCR （principal components regression） and PLS （partial least-squares）, a MPM （mathematical programming method） is developed and proposed for practical use in NIR analyses of agricultural and food products. The proposed method involves the mathematical programming techniques to seek the regression coefficients for the calibration model calculation. It is based on the optimization theory used for finding the extremum of the objective function in the given domain of a vector space and employs the method of the complementarity problems solving. The MPM algorithm is described in detail. The MPM was tested on an InfraLUM FT-10 NIR analyzer of Lumex company with samples of dry milk （for fat）, corn （for protein） and rye flour （for moisture）. The obtained results show that the MPM can be used for constructing multivariate calibrations with the qualitative characteristics superior over those of the classical PCR and PLS methods of analysis.展开更多
Omni-directional imaging system is becoming more and more common in reducing the maintenance fees and the number of cameras used as well as increasing the angle of view in a single camera. Due to omni-directional imag...Omni-directional imaging system is becoming more and more common in reducing the maintenance fees and the number of cameras used as well as increasing the angle of view in a single camera. Due to omni-directional images are not directly understandable, an approach namely the un-warping process, has been implemented in converting the omni-directional image to a panoramic image, making it understandable. There are different kinds of methods used for the implementation of this approach. This paper evaluates the performance of the 3 universal un-warping methods currently applied actively around the world in transforming omni-directional image to panoramic image, namely the pano-mapping table method, discrete geometry method （DGT） and the log-polar mapping method. The algorithm of these methods will first be proposed, and the code will then be generated and be tested on several different omni-directional images. The images converted will then be compared among each other and be evaluated based on their performance on the resolutions, quality, algorithm used, complexity based on Big-O computations, processing time, and finally their data compression rate available for each of the methods. The most preferable un-warping method will then be concluded, taking into considerations all these factors.展开更多
Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long c...Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long catheters in the hospital from March 2024 to March 2025 were selected and randomly divided into a control group and an observation group,with 45 patients in each group.The control group received routine nursing intervention,while the observation group received clinical nursing pathway intervention.The nursing risk events,catheter indwelling time,and nursing satisfaction were evaluated in both groups.Results:The observation group had a shorter catheter indwelling time,fewer risk events during intravenous therapy(total incidence rate of 2.22%),and higher nursing satisfaction.Additionally,negative emotional feedback was reduced,and the SAS score(31.02±1.12)was lower in the observation group compared to the control group.There were significant differences between the two groups in all indicators(P<0.05).Conclusion:Applying the clinical nursing pathway during intravenous therapy via peripheral mid-long catheters can help ensure infusion safety,improve unstable emotional states,and promote high-quality service standards.展开更多
In order to accurately and automatically measure the light emitting diode(LED) colorimetric parameters,the design of a measurement system by adopting a high-performance spectrometer and looking-up table method was pre...In order to accurately and automatically measure the light emitting diode(LED) colorimetric parameters,the design of a measurement system by adopting a high-performance spectrometer and looking-up table method was presented based on the LabVIEW.First,the data of the LED relative spectral power distribution(SPD) were read by the spectrometer to measure LED chromaticity coordinate,and the slopes table were formed by the LED chromaticity coordinate and the equal stimulus point.Then,the CIE1931 chromaticity diagram was divided into 4 different regions to ensure the slopes table that had the character of monotonic decreasing.Finally,the LED dominant wavelength and purity were automatically calculated using the LabVIEW programs.The data of LEDs' colorimetric parameters have demonstrated that the measurement method in this paper can achieve higher precision result.展开更多
A multi center randomized clinical trial was adopted in the present study. 1705 eligible women with identical demographic and gynecological characteristics were divided into two groups: 871 using phenol atabrine pas...A multi center randomized clinical trial was adopted in the present study. 1705 eligible women with identical demographic and gynecological characteristics were divided into two groups: 871 using phenol atabrine paste (PAP) and 834 using phenol mucilage (PM). The five year follow up rates for the two groups were 97.5% and 98.1%, respectively. The multiple decrement life table analysis showed that there was a significant difference in the gross cumulative failure rates between the two groups. The 60th month gross cumulative failure rates for PAP group and PM group were 4.61% and 11.87%, respectively, thus indicating the efficacy of PAP to be significantly higher than that of PM. 97.7% users had cervical smear examinations, but no suspected cancer cells or cancer cells were found. Meanwhile, there was no known diseases related to the chemical reagent. This follow up study indicates that tubal sterilization by chemical instillation is a simple,safe and efficient female method. It suggested that this method would be introduced to a wider use on the basis of modification in the composition of chemical agents, standardized operational procedure, and improved administrative regulation in the use of this technology.展开更多
Objective To investigate the effects of acupuncture on the neurotransmitter levels and gut microbiota in a mouse model of Tourette syndrome(TS).Methods Thirty-six male C57/BL6 mice were randomly divided into 4 groups ...Objective To investigate the effects of acupuncture on the neurotransmitter levels and gut microbiota in a mouse model of Tourette syndrome(TS).Methods Thirty-six male C57/BL6 mice were randomly divided into 4 groups using a random number table method:3,3’-iminodipropionitrile(IDPN)group,control group,acupuncture group,and tiapride group,with 9 mice in each group.In the IDPN group,acupuncture group,and tiapride group,mice received daily intraperitoneal injections of IDPN(300 mg/kg body weight)for 7 consecutive days to induce stereotyped behaviors.Subsequently,in the acupuncture intervention group,standardized acupuncture treatment was administered for 14 consecutive days to IDPN-induced TS model mice.The selected acupoints included Baihui(DU 20),Yintang(DU 29),Waiguan(SJ 5),and Zulinqi(GB 41).In the tiapride group,mice were administered tiapride(50 mg/kg body weight)via oral gavage daily for 14 consecutive days.The control group,IDPN group,and acupuncture group received the same volume of saline orally for 14 consecutive days.Stereotypic behaviors were quantified through behavioral assessments.Neurotransmitter levels,including dopamine(DA),glutamate(Glu),and aspartate(ASP)in striatal tissue were measured using enzyme-linked immunosorbent assay.Dopamine transporter(DAT)expression levels were additionally quantified through quantitative polymerase chain reaction(qPCR).Gut microbial composition was analyzed through 16S ribosomal RNA gene sequencing,while metabolic profiling was conducted using liquid chromatography-mass spectrometry(LC-MS).展开更多
Objective To study the action mechanism of Wenshen Tongdu Recipe(WSTDR)inpromoting microvascular endothelial cells(MECs)phagocytosis and clearing myelin debris by reducing iron overload phenomenon after spinal cord in...Objective To study the action mechanism of Wenshen Tongdu Recipe(WSTDR)inpromoting microvascular endothelial cells(MECs)phagocytosis and clearing myelin debris by reducing iron overload phenomenon after spinal cord injury,thereby improving the infiammatory microenvironment after spinal cord injury.Methods Fifty C57BL/6 mice were divided into 5 groups by random number table method:sham operation group,model group,deferoxamine(DFO)group,WSTDR group,WSTDR+DFO group,10 mice in each group.A mouse model of spinal cord injury was prepared by modified Allen's method.The pathological changes of the spinal cord were observed by HE staining and Nissl staining.The iron ion content in serum was determined by the iron ion colorimetric assay kit.The expression levels of monocyte chemoattractant protein-1(MCP-1),interleukin(IL)-6,IL-1β,and tumor necrosis factor-α(TNF-α)in the homogenate and serum of the spinal cord were detected by ELISA.The phagocytosis and clearance of myelin debris by MECs in the spinal cord were observed by 3D laser confocal.Results One mouse died in the model group,DFO group,and WSTDR group,respectively.The results of HE staining showed that compared with the model group,spinal cord cavities were reduced with nerve fiber disorder in DFO group and WSTDR group.Nissl staining analysis showed that compared with the model group,Nissl morphology and neuronal pyknosis were improved in DFO group and WSTDR group.Ferric ion colorimetric assay showed that compared with the model group,serum iron ion concentration were significantly reduced in DFO group and WSTDR group(P<0.01).ELISA results showed that compared with the sham-operation group,the levels of MCP-1,IL-6,IL-1β,and TNF-αin serum and spinal cord tissues significantly increased in the model group(P<0.01).Compared with the model group,serum levels of MCP-1,IL-6,IL-1β,and TNF-αwere significantly lowered in DFO group and WSTDR group(P<0.05,P<0.01).Serum concentrations of MCP-1 and IL-1βwere significantly lowered in WSTDR+DFO group(P<0.01).Compared with WSTDR group,serum concentrations of MCP-1,IL-6,anddIL-1βwere significantly improved in WSTDR+DFO group(P<0.01).Compared with the model group,the levels of MCP-1,IL-6,IL-1β(except WSTDR group),and TNF-αin spinal cord tissues were significantly reduced in DFO group,WSTDR group,and WSTDR+DFO group(P<0.05,P<0.01).3D laser confocal results showed MECs phagocytosis and clearance of myelin debris were promoted in DFO group and WSTDR group.Conclusion WSTDR promotes MECs to engulf myelin debris by reducing iron overload,improving the infiammatory microenvironment,and promoting spinal cord injury repairment.展开更多
基金the National Natural Science Foundation of China(Grant No.41875040)the Top-notch Talents Program in Universities of Anhui Province,China(Grant No.gxbjZD2020067)the Natural Science Research Projects of Universities in Anhui Province,China(Grant No.KJ2020A0029).
文摘Obtaining the vertical distribution profile of trace gas is of great significance for studying the diffusion procedure of air pollution.In this article,a look-up table method based on multi-axis differential optical absorption spectroscopy(MAX-DOAS)technology is established for retrieving the tropospheric NO_(2) vertical distribution profiles.This method retrieves the aerosol extinction profiles with minimum cost function.Then,the aerosol extinction profiles and the atmospheric radiation transfer model(RTM)are employed to establish the look-up table for retrieving the NO_(2) vertical column densities(VCDs)and profiles.The measured NO_(2) differential slant column densities(DSCDs)are compared with the NO_(2) DSCDs simulated by the atmospheric RTM,and the NO_(2) VCDs,the weight factor of NO_(2) in the boundary layer,and the boundary layer height are obtained by the minimization process.The look-up table is established to retrieve NO_(2) VCDs based on MAX-DOAS measurements in Huaibei area,and the results are compared with the data from Copernicus Atmospheric Monitoring Service(CAMS)model.It is found that there are nearly consistent and the correlation coefficient R2 is more than 0.86.The results show that this technology provides a more convenient and accurate retrieval method for the stereoscopic monitoring of atmospheric environment.
文摘In addition to the conventional methods of the calibration model construction, such as PCR （principal components regression） and PLS （partial least-squares）, a MPM （mathematical programming method） is developed and proposed for practical use in NIR analyses of agricultural and food products. The proposed method involves the mathematical programming techniques to seek the regression coefficients for the calibration model calculation. It is based on the optimization theory used for finding the extremum of the objective function in the given domain of a vector space and employs the method of the complementarity problems solving. The MPM algorithm is described in detail. The MPM was tested on an InfraLUM FT-10 NIR analyzer of Lumex company with samples of dry milk （for fat）, corn （for protein） and rye flour （for moisture）. The obtained results show that the MPM can be used for constructing multivariate calibrations with the qualitative characteristics superior over those of the classical PCR and PLS methods of analysis.
文摘Omni-directional imaging system is becoming more and more common in reducing the maintenance fees and the number of cameras used as well as increasing the angle of view in a single camera. Due to omni-directional images are not directly understandable, an approach namely the un-warping process, has been implemented in converting the omni-directional image to a panoramic image, making it understandable. There are different kinds of methods used for the implementation of this approach. This paper evaluates the performance of the 3 universal un-warping methods currently applied actively around the world in transforming omni-directional image to panoramic image, namely the pano-mapping table method, discrete geometry method （DGT） and the log-polar mapping method. The algorithm of these methods will first be proposed, and the code will then be generated and be tested on several different omni-directional images. The images converted will then be compared among each other and be evaluated based on their performance on the resolutions, quality, algorithm used, complexity based on Big-O computations, processing time, and finally their data compression rate available for each of the methods. The most preferable un-warping method will then be concluded, taking into considerations all these factors.
文摘Objective:To observe the intervention effect of clinical nursing pathway on patients receiving intravenous therapy via peripheral mid-long catheters.Methods:Ninety patients receiving intravenous therapy via mid-long catheters in the hospital from March 2024 to March 2025 were selected and randomly divided into a control group and an observation group,with 45 patients in each group.The control group received routine nursing intervention,while the observation group received clinical nursing pathway intervention.The nursing risk events,catheter indwelling time,and nursing satisfaction were evaluated in both groups.Results:The observation group had a shorter catheter indwelling time,fewer risk events during intravenous therapy(total incidence rate of 2.22%),and higher nursing satisfaction.Additionally,negative emotional feedback was reduced,and the SAS score(31.02±1.12)was lower in the observation group compared to the control group.There were significant differences between the two groups in all indicators(P<0.05).Conclusion:Applying the clinical nursing pathway during intravenous therapy via peripheral mid-long catheters can help ensure infusion safety,improve unstable emotional states,and promote high-quality service standards.
基金National Natural Science Foundation of China (No. 51105289)Doctoral Program Foundation of Self-determined and Innovative Research Funds of WUT,China (No. 2010-ZY-JD-034)
文摘In order to accurately and automatically measure the light emitting diode(LED) colorimetric parameters,the design of a measurement system by adopting a high-performance spectrometer and looking-up table method was presented based on the LabVIEW.First,the data of the LED relative spectral power distribution(SPD) were read by the spectrometer to measure LED chromaticity coordinate,and the slopes table were formed by the LED chromaticity coordinate and the equal stimulus point.Then,the CIE1931 chromaticity diagram was divided into 4 different regions to ensure the slopes table that had the character of monotonic decreasing.Finally,the LED dominant wavelength and purity were automatically calculated using the LabVIEW programs.The data of LEDs' colorimetric parameters have demonstrated that the measurement method in this paper can achieve higher precision result.
文摘A multi center randomized clinical trial was adopted in the present study. 1705 eligible women with identical demographic and gynecological characteristics were divided into two groups: 871 using phenol atabrine paste (PAP) and 834 using phenol mucilage (PM). The five year follow up rates for the two groups were 97.5% and 98.1%, respectively. The multiple decrement life table analysis showed that there was a significant difference in the gross cumulative failure rates between the two groups. The 60th month gross cumulative failure rates for PAP group and PM group were 4.61% and 11.87%, respectively, thus indicating the efficacy of PAP to be significantly higher than that of PM. 97.7% users had cervical smear examinations, but no suspected cancer cells or cancer cells were found. Meanwhile, there was no known diseases related to the chemical reagent. This follow up study indicates that tubal sterilization by chemical instillation is a simple,safe and efficient female method. It suggested that this method would be introduced to a wider use on the basis of modification in the composition of chemical agents, standardized operational procedure, and improved administrative regulation in the use of this technology.
基金Supported by the National Natural Science Foundation of China(No.U23A20507 and No.82074522)FU Wen-bin Famous Guangdong TCM Physician Inheritance Studio of Guangdong Provincial TCM Administration(Guangdong TCM Office Letter[2020]No.1)+1 种基金Guangdong Provincial Hospital of Situ Ling lnheritance Studio of Lingnan Acupuncture School(TCM Second Hospital[2013]No.233)Natural Science Foundation of Guangdong Province(No.2024A1515010291)。
文摘Objective To investigate the effects of acupuncture on the neurotransmitter levels and gut microbiota in a mouse model of Tourette syndrome(TS).Methods Thirty-six male C57/BL6 mice were randomly divided into 4 groups using a random number table method:3,3’-iminodipropionitrile(IDPN)group,control group,acupuncture group,and tiapride group,with 9 mice in each group.In the IDPN group,acupuncture group,and tiapride group,mice received daily intraperitoneal injections of IDPN(300 mg/kg body weight)for 7 consecutive days to induce stereotyped behaviors.Subsequently,in the acupuncture intervention group,standardized acupuncture treatment was administered for 14 consecutive days to IDPN-induced TS model mice.The selected acupoints included Baihui(DU 20),Yintang(DU 29),Waiguan(SJ 5),and Zulinqi(GB 41).In the tiapride group,mice were administered tiapride(50 mg/kg body weight)via oral gavage daily for 14 consecutive days.The control group,IDPN group,and acupuncture group received the same volume of saline orally for 14 consecutive days.Stereotypic behaviors were quantified through behavioral assessments.Neurotransmitter levels,including dopamine(DA),glutamate(Glu),and aspartate(ASP)in striatal tissue were measured using enzyme-linked immunosorbent assay.Dopamine transporter(DAT)expression levels were additionally quantified through quantitative polymerase chain reaction(qPCR).Gut microbial composition was analyzed through 16S ribosomal RNA gene sequencing,while metabolic profiling was conducted using liquid chromatography-mass spectrometry(LC-MS).
文摘Objective To study the action mechanism of Wenshen Tongdu Recipe(WSTDR)inpromoting microvascular endothelial cells(MECs)phagocytosis and clearing myelin debris by reducing iron overload phenomenon after spinal cord injury,thereby improving the infiammatory microenvironment after spinal cord injury.Methods Fifty C57BL/6 mice were divided into 5 groups by random number table method:sham operation group,model group,deferoxamine(DFO)group,WSTDR group,WSTDR+DFO group,10 mice in each group.A mouse model of spinal cord injury was prepared by modified Allen's method.The pathological changes of the spinal cord were observed by HE staining and Nissl staining.The iron ion content in serum was determined by the iron ion colorimetric assay kit.The expression levels of monocyte chemoattractant protein-1(MCP-1),interleukin(IL)-6,IL-1β,and tumor necrosis factor-α(TNF-α)in the homogenate and serum of the spinal cord were detected by ELISA.The phagocytosis and clearance of myelin debris by MECs in the spinal cord were observed by 3D laser confocal.Results One mouse died in the model group,DFO group,and WSTDR group,respectively.The results of HE staining showed that compared with the model group,spinal cord cavities were reduced with nerve fiber disorder in DFO group and WSTDR group.Nissl staining analysis showed that compared with the model group,Nissl morphology and neuronal pyknosis were improved in DFO group and WSTDR group.Ferric ion colorimetric assay showed that compared with the model group,serum iron ion concentration were significantly reduced in DFO group and WSTDR group(P<0.01).ELISA results showed that compared with the sham-operation group,the levels of MCP-1,IL-6,IL-1β,and TNF-αin serum and spinal cord tissues significantly increased in the model group(P<0.01).Compared with the model group,serum levels of MCP-1,IL-6,IL-1β,and TNF-αwere significantly lowered in DFO group and WSTDR group(P<0.05,P<0.01).Serum concentrations of MCP-1 and IL-1βwere significantly lowered in WSTDR+DFO group(P<0.01).Compared with WSTDR group,serum concentrations of MCP-1,IL-6,anddIL-1βwere significantly improved in WSTDR+DFO group(P<0.01).Compared with the model group,the levels of MCP-1,IL-6,IL-1β(except WSTDR group),and TNF-αin spinal cord tissues were significantly reduced in DFO group,WSTDR group,and WSTDR+DFO group(P<0.05,P<0.01).3D laser confocal results showed MECs phagocytosis and clearance of myelin debris were promoted in DFO group and WSTDR group.Conclusion WSTDR promotes MECs to engulf myelin debris by reducing iron overload,improving the infiammatory microenvironment,and promoting spinal cord injury repairment.
