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Statistical Research on Megahertz-peaked Spectra Pulsars

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Research in Astronomy and Astrophysics 2025年第1期25卷 116-134页

作者： Hong-Bing Cai li chen Shi-Dang li Kai Wang Hang liu JSNU SPBPU Institute of Engineering & SINO RUSSIAN Institute Jiangsu Normal University School of Physics and Electronic Engineering Jiangsu Normal University

Megahertz-peaked spectra(MPS) pulsars are referred as cases whose radio spectra turn over around 100 MHz. We identified 53 MPS pulsars based on the spectral data from the literature, and statistically analyzed the spatial location distribution, the magnetic field-period distribution, peak frequencies, spectral indices, and dispersion measures of these MPS pulsars. We found that there is a strong positive correlation between the dispersion measures and the peak frequencies of MPS pulsars, and negative correlations of the dispersion measures with spectral indices and the ages are also found. Such correlations suggest that the interstellar medium is an important factor that affects observational properties of MPS pulsars.

关键词： (stars:) pulsars: general ISM: general radio continuum: general

A cross-sectional study of the association between dietary inflammatory index and glaucoma prevalence in a US population

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International Journal of Ophthalmology(English edition) 2025年第1期18卷 139-145页

作者： Wen-li chen li-Xia Zhang Department of Ophthalmology Zhejiang Chinese Medical University Affiliated Wenzhou Hospital of Integrated Traditional Chinese and Western MedicineWenzhou 325000Zhejiang ProvinceChina Eye Hospital China Academy of Chinese Medical SciencesBeijing 100040China

AIM:To assess the relationship between dietary inflammatory index(DII)and prevalence of glaucoma among individuals aged 40y and above in the United ***:Participants were drawn from 2 cycles of the National Health and Nutrition Examination Survey(NHANES,2005-2008)for a cross-sectional *** was calculated from 24-hour dietary recall questionnaire conducted by experienced researchers and data analyzed in R according to the NHANES user guide,“Stratified Multi-stage Probability Sampling”.The relationship between DII and glaucoma was evaluated by multi-factor logistic regression analysis and the existence of a non-linear association examined by restricted cubic spline(RCS)***:A total of 5359 subjects were included and the cross-sectional analysis weighted to represent the US population of 109 *** was elevated in glaucoma patients(Plinear relationship between DII and glaucoma risk(P of non-linear relationship=0.575).CONCLUSION:An increased DII is strongly associated with high risk of glaucoma and diet-induced inflammation should be controlled to delay glaucoma progression.

关键词： glaucoma risk factors dietar y inflammatory index National Health and Nutrition Examination Survey restricted cubic spline regression cross-sectional study

Space weathering characteristics of lunar permanently shadowed regions soils:Evidence from experimental simulation

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Acta Geochimica 2025年第1期44卷 1-10页

作者： Zixuan Han Yang li chen li Ronghua Pang Sizhe Zhao Zhuang Guo Kairui Tai Rui li Zhenhao Hu li liu Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyangChina University of Chinese Academy of Sciences BeijingChina Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefeiChina State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and TechnologyMacaoChina NWU-HKU Joint Center of Earth and Planetary Sciences Department of GeologyNorthwest UniversityXi’anChina International Center for Planetary Science Chengdu University of TechnologyChengduChina Deep Space Exploration Lab BeijingChina

Permanently shadowed regions(PSRs)on the Moon are potential reservoirs for water ice,making them hot spots for future lunar *** water ice in PSRs would cause distinctive changes in space weathering there,in particular reduction-oxidation processes that diff er from those in illuminated *** determine the characteristics of products formed during space weathering in PSRs,the lunar meteorite NWA 10203 with artifi cially added water was irradiated with a nanosecond laser to simulate a micro-meteorite bombardment of lunar soil containing water *** TEM results of the water-incorporated sample showed distinct amorphous rims that exhibited irregular thickness,poor stratifi cation,the appearance of bubbles,and a reduced number of npFe^(0).Additionally,EELS analysis showed the presence of ferric iron at the rim of the nanophase metallic iron particles(npFe^(0))in the amorphous rim with the involvement of *** results suggest that water ice is another possible factor contributing to oxidation during micrometeorite bombardment on the lunar *** addition,it off ers a reference for a new space weathering model that incorporates water in PSRs,which could be widespread on asteroids with volatiles.

关键词： Space weathering Permanently shadowed regions The Moon laser irradiation Water ice

Low Complexity Successive Cancellation list Decoding of U-UV Codes

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China Communications 2025年第1期22卷 41-60页

作者： chen Wenhao chen li lin Jingyu Zhang Huazi School of Electronics and Information Technology Sun Yat-sen UniversityGuangzhou 510006China Guangdong Province Key Laboratory of Information Security Technology Guangzhou 510006China Hangzhou Research Center Huawei Technologies Co.Ltd.Hangzhou 310052China

Constituted by BCH component codes and its ordered statistics decoding(OSD),the successive cancellation list(SCL)decoding of U-UV structural codes can provide competent error-correction performance in the short-to-medium length ***,this list decoding complexity becomes formidable as the decoding output list size *** is primarily incurred by the *** this challenge,this paper proposes the low complexity SCL decoding through reducing the complexity of component code decoding,and pruning the redundant SCL decoding *** the former,an efficient skipping rule is introduced for the OSD so that the higher order decoding can be skipped when they are not possible to provide a more likely codeword *** is further extended to the OSD variant,the box-andmatch algorithm(BMA),in facilitating the component code ***,through estimating the correlation distance lower bounds(CDLBs)of the component code decoding outputs,a path pruning(PP)-SCL decoding is proposed to further facilitate the decoding of U-UV *** particular,its integration with the improved OSD and BMA is *** results show that significant complexity reduction can be ***,the U-UV codes can outperform the cyclic redundancy check(CRC)-polar codes with a similar decoding complexity.

关键词： ordered statistics decoding successive cancellation list decoding U-UV codes

A novel supramolecular assembly based on nor-seco-cucurbit[10]uril for spermine sensing and artificial light-harvesting

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Chinese Chemical Letters 2025年第1期36卷 262-266页

作者： Ran Cen Yan-Yan Tang li-Xia chen Zhu Tao Xin Xiao National Key Laboratory of Green Pesticide State Key Laboratory of Green Pesticide and Agricultural BioengineeringMinistry of EducationKey Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou ProvinceGuizhou UniversityGuiyang 550025China

A supramolecular assembly composed of perylene diimide derivative(PDI-nm)and nor-secocucurbit[10]uril(ns-Q[10])was *** excellent host-guest interaction between PDI-nm and nsQ[10]prevented the aggregation-caused quenching(ACQ)effect of PDI-nm,resulting in a luminescent *** addition of spermine to the PDI-nm/ns-Q[10]assembly restored the ACQ of PDI-nm due to the competitive binding of spermine to ns-Q[10],which released *** assembly based on this principle showed ultra-high sensitivity for the detection of spermine with a detection limit as low as7.84×10^(-7)mol/L in aqueous solution and 3.69×10^(-7)mol/L in plasma ***,an artificial light-harvesting system based on this assembly was proposed,benefiting from its good luminescent *** red(Ni R)functioned as an acceptor loaded into assembly,and a highly efficient energy transfer process occurred from PDI-nm/ns-Q[10]to Ni R,with an efficiency up to 87%.

关键词： Nor-seco-cucurbituril Perylene diimide derivative Spermine light-harvesting

Epigenetic basis for the establishment of ruminal tissue-specific functions in bovine fetuses and adults

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Journal of Genetics and Genomics 2025年第1期52卷 78-92页

作者： Jing Wang Wen Yuan Fang liu Guangbo liu Xiaoxiong Geng chen li chenchen Zhang Nan li Xueling li State Key Laboratory of Reproductive Regulation&Breeding of Grassland livestock Research Center for Laboratory Animal ScienceInner Mongolia UniversityHohhotInner Mongolia 010070China College of Chemistry and Chemical Engineering Engineering Research Center of Dairy Quality and Safety Control TechnologyMinistry of EducationInner Mongolia UniversityHohhotInner Mongolia 010070China

Epigenetic regulation in the rumen,a unique ruminant organ,remains largely unexplored compared with other tissues studied in model *** this study,we perform an in-depth analysis of the epigenetic and transcriptional landscapes across fetal and adult bovine tissues as well as pluripotent stem *** the extensive methylation differences across various stages and tissues,we identify tissue-specific differentially methylated regions(tsDMRs)unique to the rumen,which are crucial for regulating epithelial development and energy *** tsDMRs cluster within super-enhancer regions that overlap with transcription factor(TF)binding *** models indicate that DNA methylation,along with H3K27me3 and H3K27ac,can be used to predict enhancer *** upstream TFs,including SOX2,FOSL1/2,and SMAD2/3,primarily maintain an inhibitory state through bivalent modifications during fetal *** functional genes are maintained mainly in a stable repressive state via DNA methylation until differentiation is *** study underscores the critical role of tsDMRs in regulating distal components of rumen morphology and function,providing key insights into the epigenetic regulatory mechanisms that may influence bovine production traits.

关键词： Rumen Epigenetics DNA methylation tsDMRs Enhancers

Identification of common genetic variants in KCNQ family genes associated with gastric cancer survival in a Chinese population

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Journal of Biomedical Research 2025年第1期39卷 76-86页

作者： Yuetong chen chen li Yi Shi Jiali Dai Yixuan Meng Shuwei li Cuiju Tang Dongying Gu Jinfei chen Department of Radiation Oncology the Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhou Municipal HospitalGusu SchoolNanjing Medical UniversitySuzhouJiangsu 215008China Department of Oncology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China Department of Oncology the First Affiliated Hospital of Wenzhou Medical UniversityWenzhouZhejiang 325015China Department of Oncology the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Environmental Genomics Jiangsu Key Laboratory of Cancer BiomarkersPrevention and TreatmentCollaborative Innovation Center for Cancer Personalized MedicineNanjing Medical UniversityNanjingJiangsu 211166China Department of Genetic Toxicology the Key Laboratory of Modern Toxicology of Ministry of EducationCenter for Global HealthSchool of Public HealthNanjing Medical UniversityNanjingJiangsu 211166China

The KCNQ family of genes(KCNQ1–KCNQ5),encoding voltage-gated K+(Kv)channels,have been demonstrated to play potential pathophysiological roles in ***,the associations between genetic variants located in KCNQ family genes and gastric cancer survival remain *** this study,a large-scale cohort comprising 1135 Chinese gastric cancer patients was enrolled to identify genetic variants in KCNQ family genes associated with overall survival(OS).Based on the survival evaluation of all five KCNQ family genes,KCNQ1 was selected for subsequent genetic *** both Cox regression model and stepwise Cox regression model used to evaluate survival-related genetic variants,we found that KCNQ1 rs10832417G>T was associated with an increased OS in gastric cancer patients(adjusted hazards ratio[HR]=0.84,95%confidence interval[CI]:0.72–0.98,P=0.023).Subsequently,a nomogram was constructed to enhance the prognostic capacity and clinical translation of rs10832417 *** rs10832417 T allele was predicted to increase the minimum free energy of the secondary ***,we observed that gastric cancer patients with downregulated KCNQ1expression had a poorer survival across multiple public *** findings of the present study indicate that KCNQ1 rs10832417 may serve as an independent prognostic predictor of gastric cancer,providing novel insights into the progression and survival of the disease.

关键词： gastric cancer survival genetic variants ionic channels

Carbapenem-resistant Klebsiella pneumoniae infections after liver transplantation:Drug resistance,risk factors and impact on prognosis

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World Journal of Gastroenterology 2025年第8期31卷 38-48页

作者： Tao-Hua liu li-Hua chen Qi-Quan Wan Department of Pediatrics The Third Xiangya Hospital of Central South UniversityChangsha 410013Hunan ProvinceChina Department of Laboratory Medicine The Third Xiangya Hospital of Central South UniversityChangsha 410013Hunan ProvinceChina Department of Transplant Surgery The Third Xiangya Hospital of Central South UniversityChangsha 410013Hunan ProvinceChina Engineering and Technology Research Center for Transplantation Medicine of National Health Commission The Third Xiangya Hospital of Central South UniversityChangsha 410013Hunan ProvinceChina

BACKGROUND liver transplant(LT)recipients are susceptible to carbapenem-resistant Klebsiella pneumoniae(CRKP)*** research addressing the incidence,timing,infection sites,resistance patterns,treatment options,and associated risk factors among LT recipients with CRKP is now *** To assess the incidence,resistance,therapy,and risk factors of CRKP infections post-LT,and to evaluate the impact of them on *** A retrospective study was conducted,including 430 consecutive patients who underwent LT between January 2015 and June *** study aimed to investigate the risk factors for CRKP infections and their influence on outcomes using logistic regression *** Among the 430 patients who underwent LT,20(4.7%)experienced at least one documented CRKP infection within 3 months *** median time from LT to the onset of CRKP infections was 6.5 *** lungs and bloodstream were the most common sites of CRKP *** isolates were relatively susceptible to ceftazidime/avibactam(93.7%),polymyxin B(90.6%),and tigecycline(75.0%)***,all isolates were resistant to piperacillin/tazobactam,ceftazidime,cefepime,aztreonam,meropenem,and levofloxacin *** with CRKP infections had a mortality rate of 35%,the rate was 12.5%for those receiving ceftazidime/avibactam *** analysis identified female sex[odds ratio(OR)=3.306;95%confidence interval(CI):1.239-8.822;P=0.017],intraoperative bleeding≥3000 mL(OR=3.269;95%CI:1.018-10.490;P=0.047),alanine aminotransferase on day 1 post-LT≥1500 U/L(OR=4.370;95%CI:1.686-11.326;P=0.002),and post-LT mechanical ventilation(OR=2.772;95%CI:1.077-7.135;P=0.035)as significant variables associated with *** infections were related to an intensive care unit length(ICU)of stay≥7 days and 6-month all-cause mortality *** CRKP infections were frequent complications following LT,with poor associated *** factors for p

关键词： liver transplantation Carbapenem-resistant Klebsiella pneumonia Antibiotic resistance Infection Immunosuppression Risk factors

China liver Transplant Registry plays an important role in liver transplantation

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Hepatobiliary & Pancreatic Diseases International 2025年第1期24卷 14-17页

作者： Zhe Yang Jian-Peng liu Jun-li chen Shu-Sen Zheng Department of Hepatobiliary and Pancreatic Surgery Department of Liver Transplantation Shulan(Hangzhou)Hospital Division of Hepatobiliary Pancreatic Surgery the First Affiliated Hospital Zhejiang University School of Medicine Key Laboratory of Combined Multi-organ Transplantation Ministry of Public Health the First Affiliated Hospital Zhejiang University School of Medicine National Center for Healthcare Quality Management in liver Transplant

In China, liver transplantation is an important discipline in the field of organ transplantation. China liver Transplant Registry (CLTR) is a scientific project that has been set up to advance surgical techniques and procedures and to improve both short-and long-term post-transplant follow-up and outcome of the liver recipients. CLTR also serves as a robust data support platform for the National liver Transplant Quality Control Center in the quest to upscale its quality control protocols. The mission of CLTR is to register all liver transplantation activities in the mainland of China and to conduct scientific analyses of the collected data. The huge number of compiled cases and the scientific research conducted over the past decade based on this database drastically revolutionized the clinical practice in the country. All CLTR activities and projects will be a guarantee to foster progresses of liver transplantation in China in a more scientific way, to standardize the systematic care in the field of liver transplantation.

关键词： Transplant registry China liver Transplant Registry liver transplantation Hepatocellular cancer