THROMBOEMBOLISM is a well-known complicationof nephrotic syndrome. Deep vein thrombosis,pulmonary embolism and renal vein thrombosisare the most common venous thromboembolicdiseases in patients with nephrotic syndrome...THROMBOEMBOLISM is a well-known complicationof nephrotic syndrome. Deep vein thrombosis,pulmonary embolism and renal vein thrombosisare the most common venous thromboembolicdiseases in patients with nephrotic syndrome, while arterialthromboembolic complications are observed less frequently,and rarely when it occurs before the diagnosis of nephroticsyndrome.1 Here we report a case with minimal change ofnephrotic syndrome who presented initially as external iliacartery thrombosis, which may be associated with longsitting while playing Mah-Jong.展开更多
AIM: To implement high-throughput 16S rDNA sequencing to study microbial diversity in the fecal matter of rats with acute lung injury/acute respiratory distress syndrome (ALI/ARDS).
Conductive ionic hydrogels(CIH)have been widely studied for the development of stretchable electronic devices,such as sensors,electrodes,and actuators.Most of these CIH are made into 3D or 2D shape,while 1D CIH(hydrog...Conductive ionic hydrogels(CIH)have been widely studied for the development of stretchable electronic devices,such as sensors,electrodes,and actuators.Most of these CIH are made into 3D or 2D shape,while 1D CIH(hydrogel fibers)is often difficult to make because of the low mechanical robustness of common CIH.Herein,we use gel spinning method to prepare a robust CIH fiber with high strength,large stretchability,and good conductivity.The robust CIH fiber is drawn from the composite gel of sodium polyacrylate(PAAS)and sodium carboxymethyl cellulose(CMC).In the composite CIH fiber,the soft PAAS presents good conductivity and stretchability,while the rigid CMC significantly enhances the strength and toughness of the PAAS/CMC fiber.To protect the conductive PAAS/CMC fiber from damage by water,a thin layer of hydrophobic polymethyl acrylate(PMA)or polybutyl acrylate(PBA)is coated on the PAAS/CMC fiber as a water-resistant and insulating cover.The obtained PAAS/CMC-PMA and PAAS/CMC-PBA CIH fibers present high tensile strength(up to 28 MPa),high tensile toughness(up to 43 MJ/m~3),and good electrical conductivity(up to 0.35 S/m),which are useful for textile-based stretchable electronic devices.展开更多
The effect of shot peening（SP） on hydrogen embrittlement of high strength steel was investigated by electrochemical hydrogen charging, slow strain rate tensile tests, and hydrogen permeation tests. Microstructure ob...The effect of shot peening（SP） on hydrogen embrittlement of high strength steel was investigated by electrochemical hydrogen charging, slow strain rate tensile tests, and hydrogen permeation tests. Microstructure observation, microhardness, and X-ray diffraction residual stress studies were also conducted on the steel. The results show that the shot peening specimens exhibit a higher resistance to hydrogen embrittlement in comparison with the no shot peening（NSP） specimens under the same hydrogen-charging current density. In addition, SP treatment sharply decreases the apparent hydrogen diffusivity and increases the subsurface hydrogen concentration. These findings are attributed to the changes in microstructure and compressive residual stress in the surface layer by SP. Scanning electron microscope fractographs reveal that the fracture surface of the NSP specimen exhibits the intergranular and quasi-cleavage mixed fracture modes, whereas the SP specimen shows only the quasi-cleavage fractures under the same hydrogen charging conditions, implying that the SP treatment delays the onset of intergranular fracture.展开更多
Objective To assess the time course of Q value after myopic laser-assisted in situ keratomileusis(LASIK) and preliminarily evaluate the determinants of the difference of Q value between before and after LASIK.Methods ...Objective To assess the time course of Q value after myopic laser-assisted in situ keratomileusis(LASIK) and preliminarily evaluate the determinants of the difference of Q value between before and after LASIK.Methods We performed a retrospective,longitudinal investigation on patients undergoing wavefront optimized LASIK therapy for emmetropization.A total of 418 eyes from 222 cases were examined preoperatively,and partly followed up at one week(172 eyes),one month(134 eyes) and three months(51 eyes) after surgery.The horizontal,vertical and total Q values of cornea were calculated from eccentricity measured at the central 6-mm corneal zones respectively.Potential determinants of the change of Q value were analyzed using multiple linear regressions.Results The mean Q value was-0.17±0.13 preoperatively,and 0.99±0.70,0.97±0.66,and 0.86±0.41 one week,one and three months postoperatively,respectively.One way analysis of variance(ANOVA) demonstrated significant differences between measurements made before surgery and at all postoperative times(at one week,one and three months;all P<0.0001,Bonferroni post hoc),but no significant differences were found among postoperative groups.Significant differences of Q values between horizontal and vertical meridians were found before surgery and at all postoperative times(all P<0.0001).Multiple regression analysis revealed that change of Q value significantly correlated with manifest refraction spherical equivalent(r=0.116,P<0.0001) and axial length(r=0.264,P<0.0001).Conclusions Over the study period,the primary changes in Q value occur within 1 week after surgery,and then become slightly decreased and nearly stable.Manifest refraction spherical equivalent and axial length play a significant role in the change of postoperative Q value.展开更多
Intense investigations have been attracted to the development of materials which can recon-figure into 3D structures in response to external stimuli.Herein we report on the design and self-folding behaviors of hydroge...Intense investigations have been attracted to the development of materials which can recon-figure into 3D structures in response to external stimuli.Herein we report on the design and self-folding behaviors of hydrogels composed of poly(ethylene glycol)methyl ether methacry-late(OEGMA)and 2-(2-methoxyethoxy)ethyl methacrylate(MEO2MA).Upon immersion into a variety of solvents at room temperature,the resulting P(MEO2MA-co-OEGMA)hy-drogel sheets self-fold into 3D morphologies,and the observed transformation in shape is reversible.We further show that composition of the gel,gaseous environment,and prepara-tion procedure play important roles in the self-folding behavior of the resulting hydrogels.This work provides a facile approach for fabricating self-folding hydrogels.展开更多
Electrodeposition of active catalysts on electrodes appears as a convenient approach to prepare non-noble-metal based electrocatalysts with defined micro- and nano-structures. Herein we report a new strategy of fabric...Electrodeposition of active catalysts on electrodes appears as a convenient approach to prepare non-noble-metal based electrocatalysts with defined micro- and nano-structures. Herein we report a new strategy of fabricating a 3-D hierarchical CuO nanocrystal array (CuO NCA) on Cu foam through a two-step sacrifice-template method. This CuO NCA possesses high conductivity, great stability, and impressive catalytic activity for oxygen evolution reaction (OER) in alkaline electrolytes. The CuO NCA can achieve a high current density of 100 mA/cm2 at a relatively low overpotential of 400 mV for OER, which shows a better performance than other Cu-based OER catalysts and IrO2. The high activity of CuO NCA is well retained during a 10-h OER test at a high current density around 270 mA/cm2, which is about 10 times higher than the current density achieved by IrO2 (around 25 mA/cm2) with the same applied overpotential. According to our best knowledge, CuO NCA is currently the most efficient and stable Cu-based electrocatalyst for water oxidation in alkaline electrolytes.展开更多
To the Editor:Mutations in mitochondrial DNA(mtDNA)cause mitochondrial diseases with multisystem involvement and variable clinical phenotypes.Myoclonic epilepsy with ragged red fiber(MERRF)syndrome is characterized by...To the Editor:Mutations in mitochondrial DNA(mtDNA)cause mitochondrial diseases with multisystem involvement and variable clinical phenotypes.Myoclonic epilepsy with ragged red fiber(MERRF)syndrome is characterized by myoclonus,generalized epilepsy,cerebellar ataxia,and mitochondrial myopathy with ragged red fibers(RRFs).Other features include hearing impairment,psychiatric disorders,and dysarthria.展开更多
With the rising popularity of the concept of“carbon neutralization”,low-carbon products are likely to gain more advantages.Related to this,green tea-an important beverage that is widely consumed in China-along with ...With the rising popularity of the concept of“carbon neutralization”,low-carbon products are likely to gain more advantages.Related to this,green tea-an important beverage that is widely consumed in China-along with emissions from planting,processing,and use phase should be given attention.Meanwhile,quantifying the carbon footprint(CF)of green tea is an essential task in developing the pathway to carbon neutrality.In this study,we quantified the CF and mitigation potential of green tea through life cycle assessment,after which we investigated the pathway toward carbon neutrality in 16 major tea-producing regions(except Hainan and Taiwan)in China.The system boundary was divided into six subsystems from cradle to grave:cultivation,processing,transport,packaging,consumption,and disposal.The results showed that the total carbon emissions of green tea reached 44.13 Mt CO_(2)eq in 2019,of which 43%came from consumption and 28%from cultivation.There were 18.78 Mt CO_(2)eq emissions from fertilizer production and application,while there was a 7.71 Mt CO_(2)eq carbon sink of tea trees.The average carbon intensity was 24.30 kg CO_(2)eq kg−1 tea,while Shandong and Guizhou ranked as the top two provinces.Sichuan,Hubei,and Yunnan Provinces had the largest amounts of carbon emissions at 6.79,6.14,and 5.96 Mt CO_(2)eq,respectively.By 2030,2050 and 2060,total carbon emissions would be reduced by 46%,63%,and 86%,respectively,under carbon neutrality assumption.A small amount of 6.14 Mt CO_(2)eq carbon emissions was retained to be offset by carbon trading or zero-carbon cultivation.Finally,the results indicate that adopting low-carbon fertilizers and clean energies will be a key entry point for carbon-neutral green tea.展开更多
Purpose The end cap time of flight(TOF)at Beijing spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data quality...Purpose The end cap time of flight(TOF)at Beijing spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data quality monitoring is a critical aspect of the data processing chain aiming at providing data with good quality for physics analyses.Methods An offline data quality monitoring tool for upgraded end cap TOF has been developed to provide feedback about the functioning and performance of detector hardware and data processing chain.Results Detector information and reconstructed time-of-flight characteristics of charged tracks are filled into plots using full Bhabha events reconstruction results,and then,these plots are used to assess the operational conditions of the detector and the quality of the data by the experts.Conclusion This paper is describing the design and the content of performance of the offline data quality monitoring of end cap TOF and the data quality performance achieved during last 2 years’physical data taking.展开更多
Background The end-cap time-of-flight(TOF)at Beijing Spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data qual...Background The end-cap time-of-flight(TOF)at Beijing Spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data quality monitoring(ODQM)is a critical aspect of the data processing chain aiming at providing data with good quality for physics analyses.Method An ODQM tool for upgraded end-cap TOF has been developed to provide feedback about the functioning and performance of detector hardware and data processing chain.Detector information and reconstructed time-of-flight characteristics of charged tracks are filled into plots using full Bhabha events’reconstruction results,and then,these plots are used to assess the operational conditions of the detector and the quality of the data by the experts.Result This paper describes the design and the content of performance of the ODQM of end-cap TOF and the data quality performance achieved during the last 2-year physical data taking.展开更多
Correction to:Radiation Detection Technology and Methods(2019)3:58 https://doi.org/10.1007/s41605-019-0132-0;(2021)5:207–212 https://doi.org/10.1007/s41605-021-00251-y The articles https://doi.org/10.1007/s41605-019-...Correction to:Radiation Detection Technology and Methods(2019)3:58 https://doi.org/10.1007/s41605-019-0132-0;(2021)5:207–212 https://doi.org/10.1007/s41605-021-00251-y The articles https://doi.org/10.1007/s41605-019-0132-0,https://doi.org/10.1007/s41605-021-00251-y have been inadvertently got published twice and were included in Volume 3 Issue 4(2019),Volume 5 issue 2(2021)Both articles are similar and the Publisher apologizes to the authors and readers for the inconvenience caused by this error.展开更多
基金Funded by Obershi blood purification academician workstation of Guangdong Province(2013B090400004)
文摘THROMBOEMBOLISM is a well-known complicationof nephrotic syndrome. Deep vein thrombosis,pulmonary embolism and renal vein thrombosisare the most common venous thromboembolicdiseases in patients with nephrotic syndrome, while arterialthromboembolic complications are observed less frequently,and rarely when it occurs before the diagnosis of nephroticsyndrome.1 Here we report a case with minimal change ofnephrotic syndrome who presented initially as external iliacartery thrombosis, which may be associated with longsitting while playing Mah-Jong.
基金Grants from the Science and Technology Development Plan of Shandong Province and Taishan Scholar project of Shandong Province
文摘AIM: To implement high-throughput 16S rDNA sequencing to study microbial diversity in the fecal matter of rats with acute lung injury/acute respiratory distress syndrome (ALI/ARDS).
基金supported by the National Natural Science Foundation of China(No.21778052 and No.21975240)by the Natural Science Foundation of Anhui Province(No.1908085J19)the Talent Research Foundation of Hefei University(No.18-19RC08)。
文摘Conductive ionic hydrogels(CIH)have been widely studied for the development of stretchable electronic devices,such as sensors,electrodes,and actuators.Most of these CIH are made into 3D or 2D shape,while 1D CIH(hydrogel fibers)is often difficult to make because of the low mechanical robustness of common CIH.Herein,we use gel spinning method to prepare a robust CIH fiber with high strength,large stretchability,and good conductivity.The robust CIH fiber is drawn from the composite gel of sodium polyacrylate(PAAS)and sodium carboxymethyl cellulose(CMC).In the composite CIH fiber,the soft PAAS presents good conductivity and stretchability,while the rigid CMC significantly enhances the strength and toughness of the PAAS/CMC fiber.To protect the conductive PAAS/CMC fiber from damage by water,a thin layer of hydrophobic polymethyl acrylate(PMA)or polybutyl acrylate(PBA)is coated on the PAAS/CMC fiber as a water-resistant and insulating cover.The obtained PAAS/CMC-PMA and PAAS/CMC-PBA CIH fibers present high tensile strength(up to 28 MPa),high tensile toughness(up to 43 MJ/m~3),and good electrical conductivity(up to 0.35 S/m),which are useful for textile-based stretchable electronic devices.
基金financially supported by the Doctoral Research Assistant Foundation of Xi'an Jiaotong University
文摘The effect of shot peening（SP） on hydrogen embrittlement of high strength steel was investigated by electrochemical hydrogen charging, slow strain rate tensile tests, and hydrogen permeation tests. Microstructure observation, microhardness, and X-ray diffraction residual stress studies were also conducted on the steel. The results show that the shot peening specimens exhibit a higher resistance to hydrogen embrittlement in comparison with the no shot peening（NSP） specimens under the same hydrogen-charging current density. In addition, SP treatment sharply decreases the apparent hydrogen diffusivity and increases the subsurface hydrogen concentration. These findings are attributed to the changes in microstructure and compressive residual stress in the surface layer by SP. Scanning electron microscope fractographs reveal that the fracture surface of the NSP specimen exhibits the intergranular and quasi-cleavage mixed fracture modes, whereas the SP specimen shows only the quasi-cleavage fractures under the same hydrogen charging conditions, implying that the SP treatment delays the onset of intergranular fracture.
基金Supported by Natural Science Foundation of Shanghai,China (09ZR1425400)Foundation of Sight-restoring Centre of Shanghai,China (050802)
文摘Objective To assess the time course of Q value after myopic laser-assisted in situ keratomileusis(LASIK) and preliminarily evaluate the determinants of the difference of Q value between before and after LASIK.Methods We performed a retrospective,longitudinal investigation on patients undergoing wavefront optimized LASIK therapy for emmetropization.A total of 418 eyes from 222 cases were examined preoperatively,and partly followed up at one week(172 eyes),one month(134 eyes) and three months(51 eyes) after surgery.The horizontal,vertical and total Q values of cornea were calculated from eccentricity measured at the central 6-mm corneal zones respectively.Potential determinants of the change of Q value were analyzed using multiple linear regressions.Results The mean Q value was-0.17±0.13 preoperatively,and 0.99±0.70,0.97±0.66,and 0.86±0.41 one week,one and three months postoperatively,respectively.One way analysis of variance(ANOVA) demonstrated significant differences between measurements made before surgery and at all postoperative times(at one week,one and three months;all P<0.0001,Bonferroni post hoc),but no significant differences were found among postoperative groups.Significant differences of Q values between horizontal and vertical meridians were found before surgery and at all postoperative times(all P<0.0001).Multiple regression analysis revealed that change of Q value significantly correlated with manifest refraction spherical equivalent(r=0.116,P<0.0001) and axial length(r=0.264,P<0.0001).Conclusions Over the study period,the primary changes in Q value occur within 1 week after surgery,and then become slightly decreased and nearly stable.Manifest refraction spherical equivalent and axial length play a significant role in the change of postoperative Q value.
基金supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences
文摘Intense investigations have been attracted to the development of materials which can recon-figure into 3D structures in response to external stimuli.Herein we report on the design and self-folding behaviors of hydrogels composed of poly(ethylene glycol)methyl ether methacry-late(OEGMA)and 2-(2-methoxyethoxy)ethyl methacrylate(MEO2MA).Upon immersion into a variety of solvents at room temperature,the resulting P(MEO2MA-co-OEGMA)hy-drogel sheets self-fold into 3D morphologies,and the observed transformation in shape is reversible.We further show that composition of the gel,gaseous environment,and prepara-tion procedure play important roles in the self-folding behavior of the resulting hydrogels.This work provides a facile approach for fabricating self-folding hydrogels.
基金supported by the National Natural Science Foundation of China(No.21474094 and No.21722406)
文摘Electrodeposition of active catalysts on electrodes appears as a convenient approach to prepare non-noble-metal based electrocatalysts with defined micro- and nano-structures. Herein we report a new strategy of fabricating a 3-D hierarchical CuO nanocrystal array (CuO NCA) on Cu foam through a two-step sacrifice-template method. This CuO NCA possesses high conductivity, great stability, and impressive catalytic activity for oxygen evolution reaction (OER) in alkaline electrolytes. The CuO NCA can achieve a high current density of 100 mA/cm2 at a relatively low overpotential of 400 mV for OER, which shows a better performance than other Cu-based OER catalysts and IrO2. The high activity of CuO NCA is well retained during a 10-h OER test at a high current density around 270 mA/cm2, which is about 10 times higher than the current density achieved by IrO2 (around 25 mA/cm2) with the same applied overpotential. According to our best knowledge, CuO NCA is currently the most efficient and stable Cu-based electrocatalyst for water oxidation in alkaline electrolytes.
文摘To the Editor:Mutations in mitochondrial DNA(mtDNA)cause mitochondrial diseases with multisystem involvement and variable clinical phenotypes.Myoclonic epilepsy with ragged red fiber(MERRF)syndrome is characterized by myoclonus,generalized epilepsy,cerebellar ataxia,and mitochondrial myopathy with ragged red fibers(RRFs).Other features include hearing impairment,psychiatric disorders,and dysarthria.
基金supported by the National Key R&D Program of China(2019YFA0607403)the National Natural Science Foundation of China(D41105115)+1 种基金Chinese Academy of Agricultural Sciences Central Public-interest Scientific Institution Basal Research Fund(BSRF202202)the Agricultural Science and Technology Innovation Program(ASTIP).
文摘With the rising popularity of the concept of“carbon neutralization”,low-carbon products are likely to gain more advantages.Related to this,green tea-an important beverage that is widely consumed in China-along with emissions from planting,processing,and use phase should be given attention.Meanwhile,quantifying the carbon footprint(CF)of green tea is an essential task in developing the pathway to carbon neutrality.In this study,we quantified the CF and mitigation potential of green tea through life cycle assessment,after which we investigated the pathway toward carbon neutrality in 16 major tea-producing regions(except Hainan and Taiwan)in China.The system boundary was divided into six subsystems from cradle to grave:cultivation,processing,transport,packaging,consumption,and disposal.The results showed that the total carbon emissions of green tea reached 44.13 Mt CO_(2)eq in 2019,of which 43%came from consumption and 28%from cultivation.There were 18.78 Mt CO_(2)eq emissions from fertilizer production and application,while there was a 7.71 Mt CO_(2)eq carbon sink of tea trees.The average carbon intensity was 24.30 kg CO_(2)eq kg−1 tea,while Shandong and Guizhou ranked as the top two provinces.Sichuan,Hubei,and Yunnan Provinces had the largest amounts of carbon emissions at 6.79,6.14,and 5.96 Mt CO_(2)eq,respectively.By 2030,2050 and 2060,total carbon emissions would be reduced by 46%,63%,and 86%,respectively,under carbon neutrality assumption.A small amount of 6.14 Mt CO_(2)eq carbon emissions was retained to be offset by carbon trading or zero-carbon cultivation.Finally,the results indicate that adopting low-carbon fertilizers and clean energies will be a key entry point for carbon-neutral green tea.
基金Supported in part by National Natural Science Foundation of China(11575225,11875277,U1232201,11605220,U1832204)National Key Basic Research Program of China(2015CB856700)Chinese Academy of Sciences(1G201331231172010).
文摘Purpose The end cap time of flight(TOF)at Beijing spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data quality monitoring is a critical aspect of the data processing chain aiming at providing data with good quality for physics analyses.Methods An offline data quality monitoring tool for upgraded end cap TOF has been developed to provide feedback about the functioning and performance of detector hardware and data processing chain.Results Detector information and reconstructed time-of-flight characteristics of charged tracks are filled into plots using full Bhabha events reconstruction results,and then,these plots are used to assess the operational conditions of the detector and the quality of the data by the experts.Conclusion This paper is describing the design and the content of performance of the offline data quality monitoring of end cap TOF and the data quality performance achieved during last 2 years’physical data taking.
基金National Natural Science Foundation of China(11575225,11875277,U1232201,11605220,U1832204)National Key Basic Research Program of China(2015CB856700)Chinese Academy of Sciences(1G201331231172010).
文摘Background The end-cap time-of-flight(TOF)at Beijing Spectrometer was upgraded with multi-gap resistive plate chamber technology in order to improve the particle identification capability in 2015.The offline data quality monitoring(ODQM)is a critical aspect of the data processing chain aiming at providing data with good quality for physics analyses.Method An ODQM tool for upgraded end-cap TOF has been developed to provide feedback about the functioning and performance of detector hardware and data processing chain.Detector information and reconstructed time-of-flight characteristics of charged tracks are filled into plots using full Bhabha events’reconstruction results,and then,these plots are used to assess the operational conditions of the detector and the quality of the data by the experts.Result This paper describes the design and the content of performance of the ODQM of end-cap TOF and the data quality performance achieved during the last 2-year physical data taking.
文摘Correction to:Radiation Detection Technology and Methods(2019)3:58 https://doi.org/10.1007/s41605-019-0132-0;(2021)5:207–212 https://doi.org/10.1007/s41605-021-00251-y The articles https://doi.org/10.1007/s41605-019-0132-0,https://doi.org/10.1007/s41605-021-00251-y have been inadvertently got published twice and were included in Volume 3 Issue 4(2019),Volume 5 issue 2(2021)Both articles are similar and the Publisher apologizes to the authors and readers for the inconvenience caused by this error.
