A Case Report of Acute Arterial Embolization of Right Lower Extremity As the Initial Presentation of Nephrotic Syndrome with Minimal Changes

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.

Changes in intestinal microflora in rats with acute respiratory distress syndrome

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).METHODS:Intratracheal instillation of lipopolysaccharide was used to induce ALI,and the pathological changes in the lungs and intestines were observed.D-lactate levels and diamine oxidase(DAO)activities were determined by enzymatic spectrophotometry.The fragments encompassing V4 16S rDNA hypervariable regions were PCR amplified from fecal samples,and the PCR products of V4 were sequenced by Illumina MiSeq.RESULTS:Increased D-lactate levels and DAO activities were observed in the model group(P<0.01).Sequencing results revealed the presence of 3780 and4142 species in the control and model groups,respectively.The percentage of shared species was 18.8419%.Compared with the control group,the model group had a higher diversity index and a lower number of species of Fusobacteria(at the phylum level),Helicobacter and Roseburia(at the genus level)(P<0.01).Differences in species diversity,structure,distribution and composition were found between the control group and early ARDS group.CONCLUSION:The detection of specific bacteria allows early detection and diagnosis of ALI/ARDS.

羧甲基纤维素增强的离子水凝胶纤维实现防水性和可拉伸性

导电离子凝胶被广泛用于开发可拉伸电子器件,包括传感器、电极、驱动器等.大多数现有的导电离子凝胶材料被制成块状或者片状来使用,由于材料较低的力学性能,现有的导电离子凝胶材料很难被制备成纤维状(水凝胶纤维).本文用凝胶纺丝的方法制备了一类兼具高强度、良好可拉伸性和良好导电性的CIH纤维.这类强韧的导电离子凝胶纤维是从聚丙烯酸钠和羧甲基纤维素钠形成的复合凝胶中拉伸纺丝所得.在这种导电离子凝胶纤维中,聚丙烯酸钠(PAAS)作为软组分,提供良好的导电性和可拉伸性;羧甲基纤维素钠(CMC)作为硬组分,赋予导电离子凝胶纤维较高的强度和韧性.在纤维表面涂敷一层疏水的聚丙烯酸甲酯(PMA)或者聚丙烯酸丁酯(PBA)作为防水保护层和绝缘层.所得的PAAS/CMC-PMA和PAAS/CMC-PBA导电离子凝胶纤维兼具高强度(28兆帕)、高韧性(43 MJ/m^(3))和高导电性(0.35 S/m),可以在基于织物的可拉伸电子器件中得到应用.

Effect of shot peening on hydrogen embrittlement of high strength steel

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.

Time Course of Q Value after Myopic Laser-assisted In Situ Keratomileusis

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.

Broadening the phenotype of m.5703G>A mutation in mitochondrial tRNAAsn gene from mitochondrial myopathy to myoclonic epilepsy with ragged red fibers syndrome

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.

Carbon footprint and carbon neutrality pathway of green tea in China

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.

The offline data quality monitoring of the BESIII end-cap TOF system

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.

The offline data quality monitoring of the BESIII end cap TOF system

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.

Correction to:The offline data quality monitoring of the BESIII end-cap TOF system

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.