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Preparation for CSST:Star-galaxy Classification using a Rotationally Invariant Supervised Machine Learning Method

Research in Astronomy and Astrophysics 2024年第9期24卷 136-146页

作者： Shiliang Zhang Guanwen Fang Jie Song Ran Li Yizhou Gu Zesen lin Chichun Zhou Yao dai Xu Kong Institute of Astronomy and Astrophysics Anqing Normal UniversityAnqing 246133China Deep Space Exploration Laboratory/Department of Astronomy University of Science and Technology of ChinaHefei 230026China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Tsung-Dao Lee Institute and Key Laboratory for Particle Physics Astrophysics and CosmologyMinistry of EducationShanghai Jiao Tong UniversityShanghai 200240China Department of Physics The Chinese University of Hong KongShatinN.T.Hong KongS.A.R.China School of Engineering Dali UniversityDali 671003China

Most existing star-galaxy classifiers depend on the reduced information from catalogs,necessitating careful data processing and feature *** this study,we employ a supervised machine learning method(GoogLeNet)to automatically classify stars and galaxies in the COSMOS *** traditional machine learning methods,we introduce several preprocessing techniques,including noise reduction and the unwrapping of denoised images in polar coordinates,applied to our carefully selected samples of stars and *** dividing the selected samples into training and validation sets in an 8:2 ratio,we evaluate the performance of the GoogLeNet model in distinguishing between stars and *** results indicate that the GoogLeNet model is highly effective,achieving accuracies of 99.6% and 99.9% for stars and galaxies,***,by comparing the results with and without preprocessing,we find that preprocessing can significantly improve classification accuracy(by approximately 2.0% to 6.0%)when the images are *** preparation for the future launch of the China Space Station Telescope(CSST),we also evaluate the performance of the GoogLeNet model on the CSST simulation *** results demonstrate a high level of accuracy(approximately 99.8%),indicating that this model can be effectively utilized for future observations with the CSST.

关键词： methods:data analysis techniques:image processing stars:imaging

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Multidisciplinary approaches in the management of advanced hepatocellular carcinoma:Exploring future directions

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World Journal of Gastrointestinal Oncology 2024年第10期16卷 4052-4054页

作者： Xin-Jin Liu Yi-xiu lin Liu-Xiang Chen Wen-Juan Yang Bing Hu Department of Gastroenterology and Hepatology/Medical Engineering Integration Laboratory of Digestive Endoscopy West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Gastroenterology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Department of Gastroenterology and Hepatology West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina

Recently,we read the article“Pathologically successful conversion hepatectomy for advanced giant hepatocellular carcinoma after multidisciplinary therapy:A case report and review of the literature”published in the World Journal of Gastrointestinal *** prognosis of advanced hepatocellular carcinoma(HCC)is poor,and multidisciplinary comprehensive treatment is currently the main research *** case report demonstrated the efficacy of the combination therapy of transcatheter arterial chemoembolization,hepatic arterial infusion chemotherapy,epclusa,lenvatinib and sintilimab for a patient with advanced HCC,and the report can serve as a reference for clinical *** would also like to share some of our views.

关键词： Hepatocellular carcinoma Multidisciplinary conversion therapy Pathological complete response Comment

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Improving iconic memory through contrast detection training with HOA-corrected vision

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Fundamental Research 2024年第1期4卷 95-102页

作者： ling Gong Junlei Zhao Yun dai Zili Wang Fang Hou Yudong Zhang Zhong-lin Lu Jiawei Zhou State Key Laboratory of Ophthalmology Optometry and Vision ScienceEye HospitalSchool of Ophthalmology and OptometryWenzhou Medical UniversityWenzhou 325027China Institute of Optics and Electronics Chinese Academy of SciencesChengdu 610209China The Key Laboratory of Adaptive Optics Chinese Academy of SciencesChengdu 610209China Chengdu University of Traditional Chinese Medicine Chengdu 610075China Division of Arts and Sciences New York University ShanghaiShanghai 200126China Center for Neural Science Department of PsychologyNew York UniversityNew York 10003United States NYU-ECNU Institute of Brain and Cognitive Science at NYU Shanghai Shanghai 200062China

Iconic memory and short-term memory are not only crucial for perception and cognition,but also of great importance to mental ***,we first showed that both types of memory could be improved by improving limiting processes in visual processing through perceptual *** adults were trained in a contrast detection task for ten days,with their higher-order aberrations(HOA)corrected in *** found that the training improved not only their contrast sensitivity function(CSF),but also their iconic memory and baseline information maintenance for short-term memory,and the relationship between memory and CSF improvements could be well-predicted by an observer *** results suggest that training the limiting component of a cognitive task with visual perceptual learning could improve visual *** may also provide an empirical foundation for new therapies to treat people with poor sensory memory.

关键词： Perceptual learning Iconic memory Higher-order aberrations Contrast sensitivity Short-term memory

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Flexible interdigitated layered framework with multiple accessible active sites for high-performance CH_(3)I capture

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Science China Chemistry 2024年第5期67卷 1569-1577页

作者： Bo Tai Baoyu Li linwei He Zhonglin Ma Shujing lin Mingxing Zhang Junchang Chen Fuqi Wu Long Chen Xing dai Fuyin Ma Zhifang Chai Shuao Wang State Key Laboratory of Radiation Medicine and Protection School for Radiological and interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

The development of adsorbent materials for effective capture of radioactive iodomethane(CH_(3)I) from the off-gas of used nuclear fuel reprocessing, remains a significant and challenging line of research because currently state-of-art adsorbents still suffer from low binding affinity with CH_(3)I. Here, we proposed a brand-new adsorption topological structure by developing a 2D interdigitated layered framework, named SCU-20, featuring slide-like channel with multiple active sites for CH_(3)I capture. The responsive rotating-adaptive aperture of SCU-20 enables the optimal utilization of all active sites within the pore for highly selective recognition and capture of CH_(3)I. A record-breaking CH_(3)I uptake capacity of 1.84 g/g was achieved under static sorption conditions with saturated CH_(3)I vapor. Both experimental and theoretical findings demonstrated that the exceptional uptake of SCU-20 towards CH_(3)I can be attributed to the confined physical electrostatic adsorption of F sites, coupled with the chemical nitrogen methylation reaction with uncoordinated N atoms of pyrazine. Moreover, dynamic CH_(3)I uptake capacity potentially allows for the capture of CH_(3)I in simulated real-world off gas reprocessing conditions. This study highlights the potential of SCU-20 as a promising candidate for efficient capture of iodine species and contributes to the development of effective solutions for radioactive iodine remediation.

关键词： 2D interdigitated layered framework iodomethane dual-sites electrostatic interaction physisorption and chemisorption

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PRC2 primes bivalent genes for transcription induction independent of histone methyltransferase activity

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Science China(Life Sciences) 2024年第9期67卷 2033-2035页

作者： Meihan Gong Ye Yuan Zhongye dai Xuejiao Lv Jiacheng Su Dawei Huo lin Niu Xu Chen Xudong Wu State Key Laboratory of Experimental Hematology The Province and Ministry Co-sponsored Collaborative Innovation Center for Medical EpigeneticsKey Laboratory of Immune Microenvironment and Disease(Ministry of Education)Department of Cell BiologySchool of Basic Medical SciencesTianjin Medical UniversityTianjin 300070China Bone Marrow Transplantation Center the First Affiliated HospitalZhejiang University School of MedicineLiangzhu LaboratoryInstitute of HematologyZhejiang UniversityHangzhou 311113China

Dear Editor,Polycomb group proteins,conserved epigenetic transcriptional repressors,are crucial for orchestrating diverse developmental gene expression programs(Schuettengruber et al.,2017).The polycomb repressive complex 2(PRC2)catalyzes H3 lysine-27 trimethylation(H3K27me3)to establish a delicate balance with H3K4me3,forming a bivalent chromatin state at target gene promoters and thereby poising them for subsequent transcription activation(Bernstein et al.,2006).

关键词： valent thereby subsequent

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Building stabilized Cu_(0.17)Mn_(0.03)V_(2)O_(5−□)·2.16H_(2)O cathode enables an outstanding room‐/low‐temperature aqueous Zn‐ion batteries

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Carbon Energy 2024年第8期6卷 25-35页

作者： Ao Wang dai‐Huo Liu lin Yang Fang Xu Dan Luo Haozhen Dou Mengqin Song Chunyan Xu Beinuo Zhang Jialin Zheng Zhongwei Chen Zhengyu Bai Key Laboratory of Green Chemical Media and Reactions Ministry of EducationCollaborative Innovation Center of Henan Province for Green Manufacturing of Fine ChemicalsSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiangHenanChina The State Key Laboratory of Catalysis(SKLC) Power Battery and System Research CenterDalian Institute of Chemical PhysicsChinese Academy of SciencesDalianChina

Vanadium oxide cathode materials with stable crystal structure and fast Zn^(2+)storage capabilities are extremely important to achieving outstanding electrochemical performance in aqueous zinc‐ion *** this work,a one‐step hydrothermal method was used to manipulate the bimetallic ion intercalation into the interlayer of vanadium *** pre‐intercalated Cu ions act as pillars to pin the vanadium oxide(V‐O)layers,establishing stabilized two‐dimensional channels for fast Zn^(2+)*** occupation of Mn ions between V‐O interlayer further expands the layer spacing and increases the concentration of oxygen defects(Od),which boosts the Zn^(2+)diffusion *** a result,as‐prepared Cu_(0.17)Mn_(0.03)V_(2)O_(5−□)·2.16H_(2)O cathode shows outstanding Zn‐storage capabilities under room‐and lowtemperature environments(e.g.,440.3 mAh g^(−1)at room temperature and 294.3 mAh g^(−1)at−60°C).Importantly,it shows a long cycling life and high capacity retention of 93.4%over 2500 cycles at 2 A g^(−1)at−60°***,the reversible intercalation chemistry mechanisms during discharging/charging processes were revealed via operando X‐ray powder diffraction and ex situ Raman *** strategy of a couple of 3d transition metal doping provides a solution for the development of superior room‐/lowtemperature vanadium‐based cathode materials.

关键词： aqueous zinc‐ion batteries Cu_(0.17)Mn_(0.03)V_(2)O_(5−□)·2.16H_(2)O oxygen defects room‐/lowtemperature performance stabilized nanostructure

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Facile and effective synthesis strategy for terbium-doped hydroxyapatite toward photoelectric devices and flexible functional fibers

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Rare Metals 2024年第4期43卷 1713-1723页

作者： Xiao-Dong Zhang Kun Nie Zi-Yao Hu Ran-Ran Zhou xiu-Qiang Duan Wu-Bin dai Song-Song Nie Song-Jun Yao Luo-Xin Wang Le-Fu Mei Hua Wang Yi-Yi Yao Xiao-Xue Ma Hubei Key Laboratory for New Textile Materials and Applications and State Key Laboratory of New Textile Materials and Advanced Processing Technology School of Materials Science and EngineeringWuhan Textile UniversityWuhan430200China Key Laboratory of Testing and Tracing of Rare Earth Products for State Market Regulation Jiangxi University of Science and TechnologyGanzhou341000China Hubei Key Laboratory of Plasma Chemistry and Advanced Materials and Key Laboratory of Green Chemical Engineering Process of Ministry of Education Wuhan Institute of TechnologyWuhan430205China

As a material with good biocompatibility,hydroxyapatite(HAP)can have optical properties after doping with various rare earth *** a biocompatible fluorescent material,doped HAP could have broad applications in biological probes,drug delivery,optoelectronic materials,fluorescence anti-counterfeiting,and other *** this paper,we put forward the preparation of HAP doped with terbium(Ⅲ)ions(Tb^(3+))by hydrothermal *** controlling the Tb^(3+)doping content in reaction and the reaction time,the changes in HAP's structure,morphology,and luminescence properties under different conditions were *** the doping amount of Tb^(3+)reached an optimal value,the dipole-quadrupole would occur and the concentration would be *** control experiment showed that the optimal Tb3+content was 7.5×10^(-5)mol,which showed the best fluorescence ***,a non-luminous material,was rarely used in the field of fluorescent anti-counterfeiting and photoelectric *** proposed to prepare a luminescent aramid/polyphenylene sulfide(ACFs/PPS)fiber paper and a new light-emitting diode(LED)using the Tb-doped HAP *** composite sample exhibited an excellent stability and fluorescence performance,which also demonstrated a possibility of HAP applications in anticounterfeiting and *** introduction of Tb3+dopant HAP was done to give HAP optical properties and broaden the application range of HAP.

关键词： Hydroxyapatite Rare earth luminescence Photoelectric device Aramid Polyphenylene sulfide fiber paper Luminescent fiber

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Efficacy and Safety of Ganyushu Granule in Treatment of Premenstrual Syndrome with Gan(Liver)Depression and Qi Stagnation Syndrome:A Randomized,Double-Blind,Multicenter,Phase-ⅡClinical Trial

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Chinese Journal of Integrative Medicine 2024年第9期30卷 771-779页

作者： TENG xiu-xiang XU Lian-wei lin Jie ZHANG Jin-feng ZHANG Qin SUN Yun YANG De-feng LI Hong-mei ZHAO Pei LIU Jun Department of Gynecology Beijing Hospital of Traditional Chinese MedicineCapital Medical UniversityBeijing100700China Department of Gynecology Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai200032China Department of Gynecology The First Hospital of Hunan University of Chinese MedicineChangsha410021China Department of Gynecology Shanxi Traditional Chinese Medicine HospitalTaiyuan030024China Department of Gynecology Hangzhou Hospital of Traditional Chinese MedicineHangzhou310005China Department of Gynecology Wenzhou Hospital Affiliated to Zhejiang University of Traditional Chinese MedicineWenzhouZhejiang Province325000China Department of Gynecology Luoyang First People’s HospitalLuoyangHenan Province471000China Department of Gynecology The Second Affiliated Hospital of Heilongjiang University of Chinese MedicineHarbin150001China

Objective:To confirm the efficacy and safety of Ganyushu Granule(GYSG)in treating premenstrual syndrome(PMS)in patients with Gan(Liver)depression and qi stagnation syndrome(GDQSS)and determine its effective ***:From June 2018 to March 2021,a total of 240 PMS women with GDQSS were included and randomly divided into 3 groups in a 1:1:1 ratio using central block randomization:high-dose GYSG group(n=78,GYSG 2 packs/time),low-dose GYSG group(n=82,GYSG and its simulant 1 pack/time),and placebo group(n=80,GYSG simulant 2 packs/time).Treatment with GYSG or placebo was given thrice daily and for up to 3 menstrual *** outcomes were PMS diary(PMSD)score and premenstrual tension syndrome self-rating scale(PMTS).Secondary outcomes were Chinese medicine(CM)syndrome ***,PMTS,and efficacy of CM were evaluated with menstrual cycles during the treatment *** indicators were analyzed after each menstrual *** analyses were performed using an intention-to-treat method,and clinical safety was ***:Of the 216 patients included in the effectiveness analysis,70,75,and 71 patients were in the high-,low-dose GYSG,and placebo groups,*** the 2nd treatment cycle,the change in PMSD scores in the high-and low-dose groups was lower than that in the placebo group(P<0.05).PMTS scores in the high-dose GYSG group after the 1st treatment cycle was lower than that in the placebo group(P<0.05),while after the 3rd treatment cycle,that in the low-dose group was lower than that in the placebo group(P<0.05).After the 2nd treatment cycle,the high-dose GYSG group had the best CM syndrome efficacy(P<0.05).No serious adverse reactions were ***:GYSG was safe and well-tolerated at both doses for treating PMS patients with ***-dose GYSG might be the optimal dose for a phaseⅢtrial.

关键词： premenstrual syndrome Chinese medicine Ganyushu Granule randomized controlled trial

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Early-life famine exposure,adulthood obesity patterns,and risk of low-energy fracture

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Frontiers of Medicine 2024年第1期18卷 192-203页

作者： Hongyan Qi Chunyan Hu Jie Zhang lin lin Shuangyuan Wang Hong lin Xiaojing Jia Yuanyue Zhu Yi Zhang Xueyan Wu Mian Li Min Xu Yu Xu Tiange Wang Zhiyun Zhao Weiqing Wang Yufang Bi Meng dai Yuhong Chen Jieli Lu Department of Endocrine and Metabolic Diseases Shanghai Institute of Endocrine and Metabolic DiseasesRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China Shanghai National Clinical Research Center for Endocrine and Metabolic Diseases Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the People’s Republic of ChinaShanghai National Center for Translational MedicineRuijin HospitalShanghai Jiao Tong University School of MedicineShanghai200025China

Malnutrition in early life increases the risk of osteoporosis,but the association of early-life undernutrition combined with adulthood obesity patterns with low-energy fracture remains *** study included 5323 community-dwelling subjects aged⩾40 years from ***-life famine exposure was identified based on the participants’birth *** obesity was assessed using the body mass index(BMI),and abdominal obesity was evaluated with the waist-to-hip ratio(WHR).Low-energy fracture was defined as fracture occurring after the age of⩾40 typically caused by falls from standing height or *** to the nonexposed group,the group with fetal,childhood,and adolescence famine exposure was associated with an increased risk of fracture in women with odds ratios(ORs)and 95%confidence intervals(CIs)of 3.55(1.57–8.05),3.90(1.57–9.71),and 3.53(1.05–11.88),respectively,but not in *** interactions were observed between fetal famine exposure and general obesity with fracture among women(P for interaction=0.0008).Furthermore,compared with the groups with normal BMI and WHR,the group of women who underwent fetal famine exposure and had both general and abdominal obesity had the highest risk of fracture(OR,95%CI:3.32,1.17–9.40).These results indicate that early-life famine exposure interacts with adulthood general obesity and significantly increases the risk of low-energy fracture later in life in women.

关键词： famine obesity body mass index waist-to-hip ratio low-energy fracture

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Preoperative prediction of lymphovascular and perineural invasion in gastric cancer using spectral computed tomography imaging and machine learning

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World Journal of Gastroenterology 2024年第6期30卷 542-555页

作者： Hui-Ting Ge Jian-Wu Chen Li-Li Wang Tian-xiu Zou Bin Zheng Yuan-Fen Liu Yun-Jing Xue Wei-Wen lin Department of Radiology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors Fujian Medical UniversityFuzhou 350001Fujian ProvinceChina Digestive Hematological and Breast MalignanciesClinical Research Center for Radiology and Radiotherapy of Fujian ProvinceFuzhou 350001Fujian ProvinceChina Department of Radiation Oncology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina Department of Diagnostic Radiology Fujian Medical University Union HospitalFuzhou 350001Fujian ProvinceChina School of Electrical and Computer Engineering University of OklahomaOklahomaOK 73019United States

BACKGROUND Lymphovascular invasion(LVI)and perineural invasion(PNI)are important prognostic factors for gastric cancer(GC)that indicate an increased risk of metastasis and poor *** preoperative prediction of LVI/PNI status could help clinicians identify high-risk patients and guide treatment ***,prior models using conventional computed tomography(CT)images to predict LVI or PNI separately have had limited *** CT provides quantitative enhancement parameters that may better capture tumor *** hypothesized that a predictive model combining clinical and spectral CT parameters would accurately preoperatively predict LVI/PNI status in GC *** To develop and test a machine learning model that fuses spectral CT parameters and clinical indicators to predict LVI/PNI status *** This study used a retrospective dataset involving 257 GC patients(training cohort,n=172;validation cohort,n=85).First,several clinical indicators,including serum tumor markers,CT-TN stages and CT-detected extramural vein invasion(CT-EMVI),were extracted,as were quantitative spectral CT parameters from the delineated tumor ***,a two-step feature selection approach using correlation-based methods and information gain ranking inside a 10-fold cross-validation loop was utilized to select informative clinical and spectral CT parameters.A logistic regression(LR)-based nomogram model was subsequently constructed to predict LVI/PNI status,and its performance was evaluated using the area under the receiver operating characteristic curve(AUC).RESULTS In both the training and validation cohorts,CT T3-4 stage,CT-N positive status,and CT-EMVI positive status are more prevalent in the LVI/PNI-positive group and these differences are statistically significant(P<0.05).LR analysis of the training group showed preoperative CT-T stage,CT-EMVI,single-energy CT values of 70 keV of venous phase(VP-70 keV),and the ratio of standardized iodine co

关键词： Spectral computed tomography Gastric cancer Lymphovascular invasion Perineural invasion

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