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Association of gestational anemia with pregnancy conditions and outcomes: A nested case-control study

World Journal of Clinical Cases 2021年第27期9卷 8008-8019页

作者： Yin Sun Zhong-Zhou Shen Fei-Ling Huang Yu Jiang Ya-Wen Wang Su-Han zhang Shuai Ma Jun-Tao Liu yong-le zhan Hang Lin Yun-Li Chen Ying-Jie Shi Liang-Kun Ma Department of Obstetrics and Gynecology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeNational Clinical Research Center for Obstetric&Gynecologic DiseasesBeijing 100730China Department of Epidemiology and Biostatistics School of Population Medicine and Public HealthChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

BACKGROUND Gestational anemia is a serious public health problem that affects pregnant women *** conditions and outcomes might be associated with the presence of gestational *** study investigated the association of pregnancy characteristics with anemia,exploring the potential etiology of the *** To assess the association of pregnancy parameters with gestational *** A nested case-control study was conducted based on the Chinese Pregnant Women Cohort Study-Peking Union Medical College Project(CPWCS-PUMC).A total of 3172 women were *** characteristics and gestational anemia occurrence were extracted,and univariable and multivariable logistic regression models were used to analyze the association of pregnancy parameters with gestational *** Among the 3172 women,14.0% were anemic,46.4% were 25-30 years of age,21.9%resided in eastern,15.7%in middle,12.4%in western 18.0% in southern and 32.0%in northern regions of *** women(65.0%)had a normal prepregnancy body mass *** analysis found that the occurrence of gestational anemia was lower in the middle and western regions than that in the eastern region[odds ratio(OR)=0.406,95%confidence interval(CI):0.309-0.533,Plem in China,and geographical factors may contribute to the *** birth and premature membrane rupture may be associated with gestational ***,we should vigorously promote local policy reformation to adapt to the demographic characteristics of at-risk pregnant women,which would potentially reduce the occurrence of gestational anemia.

关键词： Anemia Body mass index Gestational weight gain Pregnancy Pregnancy outcomes

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Comparison of systematic and combined biopsy for the detection of prostate cancer

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Asian Journal of Andrology 2024年第5期26卷 517-521页

作者： Jin-Lun Huang Da Huang Tsun-Tsun Chun Chi Yao yong-le zhan Xiao-Hao Ruan Terence Chun-Ting Lai Chiu-Fung Tsang Karl-Ho Pang Ada Tsui-Lin Ng Dan-Feng Xu Brian Sze-Ho Ho Rong Na Department of Urology Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Division of Urology Department of SurgeryLKS Faculty of MedicineThe University of Hong KongHong KongChina Division of Urology Department of SurgeryQueen Mary HospitalHong KongChina

Systematic prostate biopsy has limitations,such as overdiagnosis of clinically insignificant prostate cancer and underdiagnosis of clinically significant prostate *** resonance imaging(MRI)-guided biopsy,a promising alternative,might improve diagnostic *** compare the cancer detection rates of systematic biopsy and combined biopsy(systematic biopsy plus MRI-targeted biopsy)in Asian men,we conducted a retrospective cohort study of men who underwent either systematic biopsy or combined biopsy at two medical centers(Queen Mary Hospital and Tung Wah Hospital,Hong Kong,China)from July 2015 to December *** statistics were calculated,and univariate and multivariate logistic regression analyses were *** primary and secondary outcomes were prostate cancer and clinically significant prostate cancer.A total of 1391 participants were *** overall prostate cancer detection rates did not significantly differ between the two groups(36.3%vs 36.6%,odds ratio[OR]=1.01,95%confidence interval[CI]:0.81-1.26,P=0.92).However,combined biopsy showed a significant advantage in detecting clinically significant prostate cancer(Gleason score≥3+4)in patients with a total serum prostate-specific antigen(tPSA)concentration of 2-10 ng ml−1(systematic vs combined:11.9%vs 17.5%,OR=1.58,95%CI:1.08-2.31,P=0.02).Specifically,in the transperineal biopsy subgroup,combined biopsy significantly outperformed systematic biopsy in the detection of clinically significant prostate cancer(systematic vs combined:12.6%vs 24.0%,OR=2.19,95%CI:1.21-3.97,P=0.01).These findings suggest that in patients with a tPSA concentration of 2-10 ng ml−1,MRI-targeted biopsy may be of greater predictive value than systematic biopsy in the detection of clinically significant prostate cancer.

关键词： clinically significant prostate cancer combined biopsy prostate cancer systematic biopsy transperineal biopsy

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An NIR-Ⅱ-emissive Ru(Ⅱ) metallacycle for efficient and safe immunotherapy

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Science China Chemistry 2025年第1期68卷 5-7页

作者： Chonglu Li Jianbo zhan Biao Dong Institute of Health Inspection and Testing Hubei Provincial Center for Disease Control and Prevention State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University

Immunotherapy, as a groundbreaking cancer treatment, has gained considerable attention for its utilization of the body’s immune system to combat tumors [1]. This therapy induces tumor cell apoptosis, triggering a sustained anti-tumor immune response and effectively preventing tumor recurrence and metastasis [2]. The fundamental principle lies in inducing tumor cell death through specific treatment modalities, leading to the release of a cascade of signaling molecules and antigens, thereby mobilizing the immune system to actively identify and attack tumor cells [3].

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Optimizing battery deployment: Aging trajectory prediction enabling homogenous performance grouping

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Journal of Energy Chemistry 2025年第1期100卷 565-577页

作者： Shuquan Wang Feng Gao zhan Ma Hao Tian Yusen zhang School of Control Science and Engineering Shandong University Key Lab of Power System Intelligent Dispatch and Control of Ministry of Education Shandong University

As battery deployments in electric vehicles and energy storage systems grow, ensuring homogeneous performance across units is crucial. We propose a multi-derivative imaging fusion(MDIF) model, employing advanced imaging and machine learning to predict battery aging trajectories from minimal initial data, thus facilitating effective performance grouping before deployment. Utilizing a derivative strategy and Gramian Angular Difference Field for dimensional enhancement, the MDIF model uncovers subtle predictive features from discharge curve data after only ten cycles. The architecture includes a parallel convolutional neural network with lateral connections to enhance feature integration and *** on a self-developed dataset, the model achieves an average root-mean-square error of 0.047 Ah and an average mean absolute percentage error of 1.60%, demonstrating high precision and *** robustness is further validated through transfer learning on two publicly available datasets, adapting with minimal retraining. This approach significantly reduces the testing cycles required, lowering both time and costs associated with battery testing. By enabling precise battery behavior predictions with limited data, the MDIF model optimizes battery utilization and deployment strategies, enhancing system efficiency and sustainability.

关键词： Lithium-ion battery Battery prognostics Fusion model Convolutional neural network Transfer learning

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Ammonia-induced CuO/13X for H_(2)S removal from simulated blast furnace gas at low temperature

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Green Energy & Environment 2025年第1期10卷 139-149页

作者： Erping Cao Yuhua Zheng Hao zhang Jianshan Wang Yuran Li Tingyu Zhu zhan-guo zhang Guangwen Xu Yanbin Cui State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization PanGang Group Research Institute Co.Ltd.Panzhihua Sichuan617000China Shenyang University of Chemical Technology Shenyang110142China University of Chinese Academy of Sciences Beijing 100049China

Blast furnace gas(BFG)is an important by-product energy for the iron and steel industry and has been widely used for heating or electricity ***,the undesirable contaminants in BFG(especially H_(2)S)generate harmful environmental *** desulfurization of BFG is urgent for integrated steel plants due to the stringent ultra-low emission *** with other desulfurization materials,zeolite-based adsorbents represent a viable option with low costs and long service *** this study,an ammonia-induced CuO modified 13X adsorbent(NH3–CuO/13X)was prepared for H_(2)S removal from simulated BFG at low *** XRD,H_(2)-TPR and TEM analysis proved that smaller CuO particles were formed and the dispersion of Cu on the surface of 13X zeolite was improved via the induction of *** on H_(2)S adsorption performance of the adsorbent was carried out using simulated BFG,and the results showed that NH3–CuO/13X-3 has better breakthrough sulfur capacity,which was more than twice the sulfur capacity of CuO/*** is proposed that the enhanced desulfurization performance of NH3–CuO/13X is attributed to an abundant pore of 13X,and combined action of 13X and *** work provided an effective way to improve the sulfur capacity of zeolite-based adsorbents via impregnation method by ammonia induction.

关键词： Blast furnace gas Desulfurization Ammonia-induced CuO 13X zeolite

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An embedded electron current layer observed at the edge of the plasma sheet in the Earth’s magnetotail

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Earth and Planetary Physics 2025年第1期9卷 148-158页

作者： ChenChen zhan RongSheng Wang QuanMing Lu San Lu XinMin Li Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of ChinaHefei 230026China Chinese Academy of Sciences(CAS)Center for Excellence in Comparative Planetology/CAS Key Laboratory of Geospace Environment/Anhui Mengcheng National Geophysical Observatory University of Science and Technology of ChinaHefei 230026China Collaborative Innovation Center of Astronautical Science and Technology Harbin 150001China

The formation of an embedded electron current sheet within the magnetotail plasma sheet has been poorly *** this article,we present an electron current layer detected at the edge of the magnetotail plasma *** ions were demagnetized inside the electron current layer,but the electrons were still frozen in with the magnetic field ***,this decoupling of ions and electrons gave rise to a strong Hall electric field,which could be the reason for the formation of the embedded thin current *** magnetized electrons,the absence of the nongyrotropic electron distribution,and negligible energy dissipation in the layer indicate that magnetic reconnection had not been triggered within the embedded thin current *** highly asymmetric plasma on the two sides of the current layer and low magnetic shear across it could suppress magnetic *** observations indicate that the embedded electric current layer,probably generated by the Hall electric field,even down to electron scale,is not a sufficient condition for magnetic reconnection.

关键词： magnetotail plasma sheet magnetic reconnection

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Insight into the particle shape on the impact of dry granular flow against a rigid barrier: A DEM study

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Journal of Earth Science 2025年

作者： Rui-Xiao zhan Dong Su Xiang-Sheng Chen Yuan-Jun Jiang Guo-Ping lei Jing-Jing Yu Key Laboratory for Resilient Infrastructures of Coastal Cities (MOE)， Shenzhen University College of Civil and Transportation Engineering， Shenzhen University School of Architecture and Urban Planning， Shenzhen University Shenzhen Key Laboratory of Green， Efficient and Intelligent Construction of Underground Metro Station， Shenzhen University Institute of Mountain Hazards and Environment， Chinese Academy of Sciences School of Transportation， Civil Engineering & Architecture， Foshan University

The effect of particle shape on the impact of dry granular flow remains an open area for further investigation. Five distinct particle shapes were examined in this study using discrete element simulations after calibrating the numerical model using a published work. The findings indicated that the particle shape had a significant influence on granular mobility. With negligible variations in normalized kinetic energy between particles of different shapes， the effect of particle shape on the increasing rate of kinetic energy became more obvious. All irregular particle scenarios had longer accumulated particle lengths down the channel than spherical particles. Variations in particle shape led to adjustments in the distribution of impact forces on the barrier. These findings substantially enhance our understanding of the distinctive effects of particle shapes on the impact mechanism of dry granular flow.

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MDCFS: few-shot object detection with multilevel decoupled classifiers

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Optoelectronics letters 2025年

作者： LI Chuanhui ZHOU Mian FENG Zhikun SUI Zezhou GAO zhan School of Computer Science and Engineering， Tianjin University of Technology

Few-shot object detection poses unique challenges as it requires effectively learning novel classes with limited labeled data. Current approaches often suffer from biases towards base classes during fine-tuning， leading to suboptimal performance on detecting novel classes. Additionally， in complex scenes， the confusion between foreground and background objects further affects the accuracy and robustness of the model. To address these issues， we propose the Multilevel Decoupling Classification Few-Shot Algorithm (MDCFS). we decouple the standard classifier into a parallel foreground classifier and a background classifier in the Few-Shot Object Detection (FSOD) setting. This decoupling enables the independent separation of positive samples from noisy negative samples， alleviating the foreground-background confusion problem commonly encountered in few-shot detectors. For Generalized Few-Shot Object Detection (G-FSOD)， where the few-shot dataset contains base classes， we further decouple the foreground classification head into a base class classification head and a novel class classification head. To ensure balance， we assign more weight to the novel class classification head， effectively addressing the bias towards base classes. Furthermore， we optimize the initial weights of the few-shot fine-tuning stage， significantly reducing training time and mitigating catastrophic forgetting in G-FSOD. Additionally， we incorporate metric learning into our model with minimal cost. Experimental results demonstrate the effectiveness of our approach. Compared to state-of-the-art few-shot object detection methods based on fine-tuning， MDCFS achieves performance improvements of up to 6.3% on the PASCAL VOC dataset and 1.5% on the COCO dataset.

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Pricing the spare bandwidth: towards maximizing data center's profit

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Science China(Information Sciences) 2016年第10期59卷 50-59页

作者： yong zhan Du XU Hongfang YU School of Communication & Information Engineering University of Electronic Science and Technology of China

To provide tenants with predictable network performance, tenants are allowed to purchase specified amount of data center network(DCN) resources(e.g., bandwidth). Then, data center will reserve the purchased resources for the corresponding tenants. Meanwhile, some DCNs are work conserving, which means that the spare bandwidth will be fairly shared by all active tenants. Even though the amount of the spare bandwidth is stochastic and uncertain, DCN providers are not likely to give away it for free. Thus, data center with work conserving may impose extra payment on tenants for using the spare bandwidth. In this paper, we propose a suitable tariff to charge for the usages of DCN resources, which includes a bill for the usage of the spare bandwidth. Through theoretical analysis and simulation, we demonstrate that our tariff can incentivize tenants to adjust their purchases of bandwidths, which can lead to the improvement of data center's profit by 27.4%without impairing the social welfare.

关键词： spare bandwidth data center network(DCN) bandwidth reservation work conserving pricing/tariff

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The relationships of solar flares with both sunspot and geomagnetic activity

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Research in Astronomy and Astrophysics 2012年第4期12卷 400-410页

作者： zhan-le Du Hua-Ning Wang Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100012China

The relationships between solar flare parameters （total importance, time duration, flare index, and flux） and sunspot activity （R z ） as well as those between geomagnetic activity （aa index） and the flare parameters can be well described by an integral response model with the response time scales of about 8 and 13 months, respectively. Compared with linear relationships, the correlation coefficients of the flare parameters with R z , of aa with the flare parameters, and of aa with R z based on this model have increased about 6%, 17%, and 47% on average, respectively. The time delays between the flare parameters with respect to R z , aa to the flare parameters, and aa to R z at their peaks in a solar cycle can be predicted in part by this model （82%, 47%, and 78%, respectively）. These results may be further improved when using a cosine filter with a wider window. It implies that solar flares are related to the accumulation of solar magnetic energy in the past through a time decay factor. The above results may help us to understand the mechanism of solar flares and to improve the prediction of the solar flares.

关键词： Sun: activity -- Sun: sunspots -- Sun: flares -- geomagnetic activity

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