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Science China Chemistry 2025年

作者： Zhiye Zheng Qiuyuan Lin Shunfeng Peng Yuxuan zhang Shuting Xu hui zhang Hongyu wang Department of Chemistry College of Science Center for Supramolecular Chemistry & Catalysis Shanghai University Laboratory for Microstructures Instrumental Analysis and Research Center Shanghai University

The facile synthesis of single-crystal hydrogen-bonded organic frameworks（HOFs） on a gram scale remains a significant challenge but is crucial for practical applications. Herein, we report a novel strategy to prepare two three-dimensional（3D）single-crystal HOFs at ambient temperature and pressure with gram-scale products. The imine-linked oligomers were synthesized using ionic liquids as catalysts, which self-assembled in situ to form large single crystals. The optimal material, H1,exhibited iodine uptake capacities of 6.02 and 4.44 g g-1from vapor and aqueous solutions, respectively, ranking among the highest reported HOFs. For the first time, the iodine-adsorbed H1 was used as an iodine source for synthesizing β-iodoethers,achieving excellent yields comparable to those obtained using iodine as the reactant. This study not only presents a simple method for the scalable synthesis of single-crystal HOFs but also explores a potential application of iodine-adsorbed materials in organic synthesis.

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Distributed Economic Dispatch Algorithms of Microgrids Integrating Grid-Connected and Isolated Modes

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 86-98页

作者： Zhongxin Liu Yanmeng zhang Yalin zhang Fuyong wang IEEE the College of Artificial Intelligence Nankai University and also with Tianjin Key Laboratory of Interventional BrainComputer Interface and Intelligent Rehabilitation Nankai University

The economic dispatch problem(EDP) of microgrids operating in both grid-connected and isolated modes within an energy internet framework is addressed in this paper. The multi-agent leader-following consensus algorithm is employed to address the EDP of microgrids in grid-connected mode, while the push-pull algorithm with a fixed step size is introduced for the isolated mode. The proposed algorithm of isolated mode is proven to converge to the optimum when the interaction digraph of microgrids is strongly connected. A unified algorithmic framework is proposed to handle the two modes of operation of microgrids simultaneously, enabling our algorithm to achieve optimal power allocation and maintain the balance between power supply and demand in any mode and any mode switching. Due to the push-pull structure of the algorithm and the use of fixed step size,the proposed algorithm can better handle the case of unbalanced graphs, and the convergence speed is improved. It is documented that when the transmission topology is strongly connected and there is bi-directional communication between the energy router and its neighbors, the proposed algorithm in composite mode achieves economic dispatch even with arbitrary mode ***, we demonstrate the effectiveness and superiority of our algorithm through numerical simulations.

关键词： Consensus algorithm distributed optimization economic dispatch (ED) energy router (ER) multi-agent systems

Clinicopathological features and treatment of gastrointestinal schwannomas

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World Journal of Gastroenterology 2025年第5期31卷 32-42页

作者： Peng-Cheng zhang Shu-hui wang Jun Li Jing-Jie wang Hong-Tan Chen Ai-Qing Li Department of Gastroenterology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina Department of Epidemiology&Health Statistics School of Public HealthSchool of MedicineZhejiang UniversityHangzhou 310058Zhejiang ProvinceChina Department of Pathology The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003Zhejiang ProvinceChina

BACKGROUND Gastrointestinal schwannomas(GIS)are rare neurogenic tumors arising from Schwann cells in the gastrointestinal *** on GIS are limited to small case reports or focus on specific tumor sites,underscoring the diagnostic and thera-peutic challenges they *** To comprehensively examine the clinical features,pathological characteristics,treatment outcomes,associated comorbidities,and prognosis of *** The study population included patients diagnosed with GIS at the First Affiliated Hospital,Zhejiang University School of Medicine,between June 2007 and April *** were retrospectively collected and analyzed from medical records,including demographic characteristics,endoscopic and imaging findings,treatment modalities,pathological evaluations,and follow-up *** In total,229 patients with GIS were included,with a mean age of 56.00 years and a male-to-female ratio of 1:*** mean tumor size was 2.75 cm,and most(76.9%)were located in the ***,6.6%of the patients had other malig-nant *** imaging and endoscopy frequently misdiagnosed GIS as gastrointestinal stromal ***,accurate preoperative diagnosis was achieved using endoscopic ultrasound-guided fine-needle aspiration combined with immunohistochemical analysis,in which S100 and SOX-10 markers were mostly *** tumors were typically managed with endoscopic resection,while larger lesions were treated with surgical ***-up results showed that most patients experienced favorable *** Preoperative diagnosis of GIS via clinical characteristics,endoscopy,and imaging examinations remains challenging but *** therapy provides a minimally invasive and effective option for patients.

关键词： Gastrointestinal schwannoma Diagnosis Treatment Endoscopictherapy Complications

Typical endoscopic appearance accurately predicts sporadic fundic gland polyps： a retrospective study of 47 771 endoscopies

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Chinese Medical Journal 2013年第15期126卷 2984-2986页

作者： CAO Hai-long SONG Shu-li YANG Bo-li zhang Zhi-hua zhang hui QU Rui wang Bang-mao Tianjin Med Univ Dept Gastroenterol & Hepatol Gen Hosp Tianjin 300052 Peoples R China Cangzhou Peoples Hosp Dept Gastroenterol & Hepatol Cangzhou 061000 Heibei Peoples R China Anhui Med Univ Dept Epidemiol Hefei 230032 Anhui Peoples R China

Sporadic fundic gland polyps （FGPs） account for 0.8%- 1.9% of all gastric polyps and are observed in patients undergoing esophagogastroduodenoscopy （EGD） in whom they account for more than 50% of all gastric polyps. The prevalence is increasing in recent years possibly due to decreased Helicobacter pylori （1t. pylori） infection rate and long-term proton pump inhibitor use. Generally, sporadic FGPs are assumed to be benign polyps with no risk of malignant transformation. We evaluated the feasibility of predicting sporadic FGPs based on typical endoscopic appearance in a large database of 47 771 endoscopies.

关键词： fundic gland polyps stomach neoplasms dysplasia endoscopy, gastrointestinal

DNMT1 promotes the proliferation and migration of gastric cancer cells by inducing microRNA-125a-5p methylation to promote SERPINE1 protein

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World Journal of Gastrointestinal Oncology 2025年第3期17卷 188-201页

作者： hui Xie hui wang Ru-Hong Li Yue-Wen zhang Xi-Rui Fan Xiao-Xue He Ao-Ran Guan Department of General Surgery Yan’an Hospital of Kunming CityKunming 650051Yunnan ProvinceChina Department of Digestive Internal Medicine Yan’an Hospital of Kunming CityKunming 650051Yunnan ProvinceChina

BACKGROUND Gastric cancer(GC)is a malignant tumor originating from gastric mucosal epithelial cells that has high morbidity and ***(miR)are important diagnostic markers and therapeutic targets in this *** To explore the mechanism of miR-125a-5p in the pathogenesis of *** The expression levels of miR-125a-5p,SERPINE1 and DNMT1 in GC cells and tissues were detected by real-time polymerase chain reaction(PCR)and Western ***-specific PCR was used to detect the level of miR-125a-5p methylation.A cell counting kit 8 assay,scratch test,and a Transwell assay were performed to detect the proliferation,migration,and invasiveness of HGC27 cells,*** expression of the epithelial mesenchymal transition(EMT)-related proteins E-cadherin,N-cadherin and vimentin in HGC27 cells was detected by Western blotting,while the expression of vimentin was detected by *** This study revealed that miR-125a-5p was expressed at low levels in GC clinical samples and cells and that miR-125a-5p overexpression inhibited the proliferation,migration,invasiveness and EMT of GC ***,miR-125a-5p can reduce GC cell proliferation,promote E-cadherin expression,inhibit N-cadherin and vimentin expression,and reduce the EMT of GC cells,thus constraining GC cells to a certain ***,DNMT1 inhibited miR-125a-5p expression by increasing the methylation of the miR-125a-5p promoter,thereby promoting the expression of SERPINE1,which acts together with miR-125a-5p to exert antagonistic effects on *** Our study revealed that DNMT1 promoted SERPINE1 protein expression by inducing miR-125a-5p methylation,which led to the proliferation,migration and occurrence of EMT in GC cells.

关键词： Gastric cancer microRNA-125a-5p DNA methyltransferase 1 SERPINE1 Methylation

Colony-stimulating factor 3 and its receptor promote leukocyte immunoglobulin-like receptor B2 expression and ligands in gastric

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World Journal of Gastrointestinal Oncology 2025年第2期17卷 198-210页

作者： Long wang Qi Wu Zong-Wen zhang hui zhang hui Jin Xin-Liang Zhou Jia-Yin Liu Dan Li Yan Liu Zhi-Song Fan Department of Oncology The Fourth Hospital of Hebei Medical UniversityShijiazhuang 050011Hebei ProvinceChina

BACKGROUND Colony-stimulating factor 3(CSF3)and its receptor(CSF3R)are known to promote gastric cancer(GC)growth and ***,their effects on the immune microenvironment remain *** analysis indicated a potential link between CSF3R expression and the immunosuppressive receptor leukocyte immunoglobulin-like receptor B2(LILRB2)in *** hypothesized that CSF3/CSF3R may regulate LILRB2 and its ligands,angiopoietin-like protein 2(ANGPTL2)and human leukocyte antigen-G(HLA-G),contributing to *** To investigate the relationship between CSF3/CSF3R and LILRB2,as well as its ligands ANGPTL2 and HLA-G,in *** Transcriptome sequencing data from The Cancer Genome Atlas were analyzed,stratifying patients by CSF3R *** expressed genes and immune checkpoints were ***(IHC)was performed on GC *** analyses of CSF3R,LILRB2,ANGPTL2,and HLA-G were conducted using The Cancer Genome Atlas data and IHC *** cells were treated with CSF3,and expression levels of LILRB2,ANGPTL2,and HLA-G were measured by quantitative reverse transcriptase-polymerase chain reaction and western *** Among 122 upregulated genes in high CSF3R expression groups,LILRB2 showed the most significant *** results indicated high expression of LILRB2(63.0%),ANGPTL2(56.5%),and HLA-G(73.9%)in GC *** positive correlations existed between CSF3R and LILRB2,ANGPTL2,and HLA-G mRNA levels(P0.05).CSF3 increased LILRB2,ANGPTL2,and HLA-G expression in GC *** nuclear ribonucleoprotein H1 modulation significantly altered their expression,impacting CSF3’s regulatory *** The CSF3/CSF3R pathway may contribute to immunosuppression in GC by upregulating LILRB2 and its ligands,with heterogeneous nuclear ribonucleoprotein H1 playing a regulatory role.

关键词： Gastric cancer Immunosuppressive receptor Colony-stimulating factor 3 Colony-stimulating factor 3 receptor Leukocyte immunoglobulin-like receptor B2 Angiopoietin-like protein 2 Human leukocyte antigen-G Heterogeneous nuclear ribonucleoprotein H1

Waveguide-integrated ultra-stable perovskite single-crystal photodetector

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Science China(Technological Sciences) 2025年第2期68卷 106-113页

作者： Zhenyu zhang Guoping wang State Key Laboratory of Radio Frequency Heterogeneous Integration Shenzhen UniversityShenzhen 518060China

Notwithstanding the exceptional photodetection capabilities of the laterally-structured perovskite single-crystal sheet(SCS),attributed to its notably lengthy carrier diffusion length and reduced defect density,operating the device within free space and exposing the SCS to the environment present obstacles in attaining on-chip integration and long-term *** overcome these challenges,this study proposes the introduction of a waveguide(WG)structure methodology,and selects the silicon WG(SWG)core and the polymer polymethyl methacrylate(PMMA)WG(PWG)fiber as ***,it integrates these two WG structures with the laterally-structured SCS photodetector into WG-SCS devices,enabling photodetection under near-field excitation of the ***,the WG-SCS device encapsulated with silicone sealant demonstrates exceedingly high stability,with no degradation in performance after being exposed to light and water stimuli for 1000 *** study demonstrates the viability of on-chip integration of lateral-structured SCS photodetectors by means of introducing WG structures and investigates the technical facets of the device’s long-term environmental *** results are expected to exert a crucial role in device integration in future applications such as optical communication,quantum photonics,and biochemical sensing.

关键词： perovskite single-crystal waveguide integration photodetection stability polymer

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Prediction of microstructure evolution of ZK61 alloy during hot spinning by internal state variable model

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Transactions of Nonferrous Metals Society of China 2025年第1期35卷 126-142页

作者： Jin-qi PAN Wen-cong zhang Jian-lei YANG Song-hui wang Yong WU Huan LI School of Materials Science and Engineering Harbin Institute of Technology WeihaiWeihai 264209China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China

An internal state variable(ISV)model was established according to the experimental results of hot plane strain compression(PSC)to predict the microstructure evolution during hot spinning of ZK61 *** effects of the internal variables were considered in this ISV model,and the parameters were optimized by genetic *** validation,the ISV model was used to simulate the evolution of grain size(GS)and dynamic recrystallization(DRX)fraction during hot spinning via Abaqus and its subroutine *** comparing the simulated results with the experimental results,the application of the ISV model was proven to be ***,the strength of the thin-walled spun ZK61 tube increased from 303 to 334 MPa due to grain refinement by DRX and texture ***,some ultrafine grains(0.5μm)that played an important role in mechanical properties were formed due to the proliferation,movement,and entanglement of dislocations during the spinning process.

关键词： internal state variable model hot spinning ZK61 alloy finite element simulation texture evolution

Effect of gradual increase of salt on performance and microbial community during granulation process

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Journal of Environmental Sciences 2025年第1期147卷 404-413页

作者： Mengfei wang Junguo He Xiangke Dong Ruimiao zhang School of Environment Harbin Institute of TechnologyHarbin 150090China State Key Laboratory of Urban Water Resources and Environment Harbin Institute of TechnologyHarbin 150090China School of Civil Engineering Guangzhou UniversityGuangzhou 510006China National Marine Environmental Monitoring Center Dalian 116023China

Salinity was considered to have effects on the characteristics,performance microbial communities of aerobic granular *** study investigated granulation process with gradual increase of salt under different *** identical sequencing batch reactors were operated,while the influent of Ra and Rb was subjected to stepwise increments of NaCl concentrations(0-4 g/L and 0-10 g/L).The presence of filamentous bacteria may contribute to granules formed under lower salinity conditions,potentially leading to granules *** removal efficiency achieved in both reactors although therewas a small accumulation of nitrite in Rb at later *** removal efficiencies of chemical oxygen demand(COD),total nitrogen(TN),and total phosphorus(TP)in Ra were 95.31%,93.70%and 88.66%,while the corresponding removal efficiencies in Rb were 94.19%,89.79%and 80.74%.Salinity stimulated extracellular polymeric substances(EPS)secretion and enriched EPS producing bacteria to help maintain the integrity and stability of the aerobic *** nitrifying bacteria were responsible for NH_(4)^(+)-N and NO_(2)^(-)-N oxidation of salinity systems and large number of denitrifying bacteria were detected,which ensure the high removal efficiency of TN in the systems.

关键词： Aerobic granular sludge(AGS)Salinity Nutrient removal Extracellular polymeric substances(EPS) Microbial community

Boron shielding design for neutron and gamma detectors of a pulsed neutron tool

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Nuclear Science and Techniques 2025年第1期36卷 115-126页

作者： Xin-Yang wang Jun-Yan Chen Qiong zhang University of Electronic Science and Technology of China Chengdu 611731China

Shielding materials are critical for downhole pulsed neutron tool design because they directly influence the accuracy of formation measurements.A well-designed shield configuration ensures that the response of the tool is maximally representative of the formation without being affected by the tool and borehole *** study investigated the effects of boron-containing materials on neutron and gamma detectors based on a newly designed logging-while-drilling tool that is currently undergoing *** the boron content increased,the ability to absorb thermal neutrons increased *** simulation,it was proven that boron carbide(B_(4)C)can be used as an effective boron shielding material for thermal neutrons,and is therefore employed in this *** shield against thermal neutrons migrating from the mud pipes,the optimal shielding thicknesses for the near-and far-neutron detectors were determined to be 5 and 4 *** a porosity of 25 p.u.,near-neutron sensitivity exhibited a 5.6%***,to shield the capture gamma generated by thermal neutrons once they enter the tool from the mud pipe and formation,internal and external shields for the gamma detector were *** results show that the internal shield requires a boron content of 75%,whereas the external shield has a thickness of 14.2 mm thickness and a boron content of 25%to minimize the tool effect.

关键词： Nuclear well logging Pulsed neutron tool Boron shielding

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