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Viscosity Approximations by Generalized Contractions for Resolvents of Accretive Operators in Banach Spaces
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作者 Adrian PETRUSEL Jen-Chih YAO 《Acta Mathematica Sinica,English Series》 SCIE CSCD 2009年第4期553-564,共12页
In this paper, we prove a strong convergence theorem for resolvents of accretive operators in a Banach space by the viscosity approximation method with a generalized contraction mapping. The proximal point algorithm i... In this paper, we prove a strong convergence theorem for resolvents of accretive operators in a Banach space by the viscosity approximation method with a generalized contraction mapping. The proximal point algorithm in a Banach space is also considered. The results extend some very recent theorems of W. Takahashi. 展开更多
关键词 viscosity approximation method accretive operator generalized contraction resolvent proximal point algorithm
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TWO PARALLEL ALGORITHMS FOR A CLASS OF SPLIT COMMON SOLUTION PROBLEMS
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作者 Truong Minh TUYEN Nguyen Thi TRANG Tran Thi HUONG 《Acta Mathematica Scientia》 2026年第1期505-518,共14页
We study the split common solution problem with multiple output sets for monotone operator equations in Hilbert spaces.To solve this problem,we propose two new parallel algorithms.We establish a weak convergence theor... We study the split common solution problem with multiple output sets for monotone operator equations in Hilbert spaces.To solve this problem,we propose two new parallel algorithms.We establish a weak convergence theorem for the first and a strong convergence theorem for the second. 展开更多
关键词 iterative algorithm Hilbert space metric projection proximal point algorithm
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Golgi Apparatus-Associated Secretome Deciphering in Living Cells Enabled by Aggregation-Induced Emission Luminogen-Mediated Photocatalytic Proximity Labeling
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作者 He Wang Yanli Guo +6 位作者 Zhen Liang Wenwen Liu Zijian Guo Yukui Zhang Yuncong Chen Bo Jiang Lihua Zhang 《Aggregate》 2026年第2期381-390,共10页
Golgi apparatus(GA)-associated secretome runs through the endomembrane system and is critical for inter-and intracellular communication networks.However,achieving in situ dissection of the GA-associated secretome rema... Golgi apparatus(GA)-associated secretome runs through the endomembrane system and is critical for inter-and intracellular communication networks.However,achieving in situ dissection of the GA-associated secretome remains challenging owing to the scarcity of specific labeling methods.This work develops an aggregation-induced emission(AIE)luminogen-mediated photocatalytic proximity labeling strategy that allows profiling of the GA-associated secretome with high spatiotemporal precision.Leveraging an AIE luminogen-derived GA-targeting photocatalyst,this strategy achieves efficient labeling of proteins in minutes within the Golgi lumen upon light activation,which enables spatiotemporally resolved modification of histidine and tyrosine residues.We succeed in profiling secretome in both living HeLa cells and hard-to-transfect macrophage HMC3 cells,and a significant subset of GA-associated secretome with 80%specificity is determined,linking the distinct GA-associated secretory profiles to cellular characteristics.The method is further applied to proteome mapping of brain and bone metastatic lung cancer cells,which reveals the underlying roles the GA-associated secretome plays in extracellular matrix organization during metastasis.This work delivers a robust tool to break the dilemma of chemical labeling of GA-associated secretome in living cells,and provides mechanistic insights into secretion regulation at the subcellular level. 展开更多
关键词 aggregation-induced emission cancer metastasis Golgi apparatus-associated secretome labeling mechanism photocatalytic proximity labeling
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A PPO-Based DRL Approach for Scalable Communication in Civilian UAV Networks
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作者 Chu Thi Minh Hue Nguyen Minh Quy 《Computers, Materials & Continua》 2026年第5期1869-1882,共14页
Nowadays,Unmanned Aerial Vehicles(UAVs)are making increasingly important contributions to numerous applications that enhance human quality of life,such as sensing and data collection,computing,and communication.Howeve... Nowadays,Unmanned Aerial Vehicles(UAVs)are making increasingly important contributions to numerous applications that enhance human quality of life,such as sensing and data collection,computing,and communication.However,communication between UAVs still faces challenges due to high-dynamic topology,volatile wireless links,and strict energy budgets.In this work,we introduce an improved communication scheme,namely Proximal Policy Optimization(PPO).Our solution casts hop–by–hop relay selection as aMarkov decision process and develops a decentralized Proximal Policy Optimization framework in an actor–critic form.Akey novelty is the design of the reward function,which jointly considers the delivery ratio,end-to-end delay,and energy efficiency,enabling flexible prioritization in dynamic environments.The simulation results across swarms of 20–70 UAVs show that,the proposed framework enhances delivery ratio to 5%over a Deep Q-Network baseline(reaching≈80%at 70 nodes),reduces latency by about 2–3ms inmedium-to-dense settings(from∼43 to 35–36ms),and attains comparable or slightly lower total energy consumption(typically 0.5%–2%lower).The results indicate that the proposed communication scheme,adaptive and scalable learning-based UAV scenarios,pave the way for re-world UAV deployments. 展开更多
关键词 Reinforcement learning proximal policy optimization(PPO) UAV 6G
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Safe Deep Reinforcement Learning for Real-time AC Optimal Power Flow:A Near-optimal Solution
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作者 Bin Feng Jiayue Zhao +4 位作者 Gang Huang Yijie Hu Huating Xu Changxin Guo Zhe Chen 《CSEE Journal of Power and Energy Systems》 2026年第1期99-111,共13页
The real-time AC optimal power flow(OPF)problem is a key issue in making fast and accurate decisions to ensure the safety and economy of power systems.With the rapid development of renewable energies,the fluctuation h... The real-time AC optimal power flow(OPF)problem is a key issue in making fast and accurate decisions to ensure the safety and economy of power systems.With the rapid development of renewable energies,the fluctuation has grown more vibrant,thus a novel approach called safe deep reinforcement learning is proposed in this paper.Herein,the real-time ACOPF problem is modeled as a constrained Markov decision process,and primal-dual optimization(PDO)based proximal policy optimization(PPO)is used to learn the optimal generator outputs in the primal domain and security constraints in the dual domain,which avoids manually selecting a trade-off between penalties for constraint violations and rewards for the economy.Before training,behavior cloning clones the expert experience into the initial weights of neural networks.Moreover,multiprocessing training is utilized to accelerate the training speed.Case studies are conducted on the IEEE 118-bus system and the modified IEEE 118-bus system.Compared with other methods,the experimental results show that the proposed method can achieve security and near-optimal economic goals by fast calculating the real-time ACOPF problem. 展开更多
关键词 Behavior cloning deep reinforcement learning multiprocessing training optimal power flow primal-dual optimization proximal policy optimization
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Tailoring Dielectric Properties of Polymer Matrix Composites for High-performance Flexible Sensors
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作者 Jun Li Kit-Ming Ma +1 位作者 Li-Sha Zhang Xiao-Ming Tao 《Chinese Journal of Polymer Science》 2026年第1期116-126,I0012,共12页
Polymer matrix composites with high dielectric constants and low dielectric losses are in high demand for flexible electronics.However,simultaneously satisfying these requirements poses a significant scientific challe... Polymer matrix composites with high dielectric constants and low dielectric losses are in high demand for flexible electronics.However,simultaneously satisfying these requirements poses a significant scientific challenge owing to the intrinsic trade-off relationship.Herein,we utilized the in situ controllable reduction of graphene oxide(GO)within a poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene)(P(VDF-Tr FE-CFE))matrix to regulate the dielectric properties.The as-obtained composite exhibited a high relative dielectric constant of 1415coupled with a low loss tangent of 0.380 at 100 Hz.Experimental and theoretical studies indicate that the increased degree of electron conjugation and conductivity of the reduced GO(RGO)are responsible for the high-k.The constrained reduction degree of GO,combined with its homogeneous dispersion in the polymer matrix,effectively suppresses long-range charge carrier migration,thereby minimizing dielectric loss.This novel strategy could be successfully applied to both organic and aqueous systems.Furthermore,a high-performance flexible capacitive proximity sensor was exemplified by the optimization of both the dielectric layer and electrode pattern,exhibiting excellent sensitivity and stability.The fundamental mechanisms elucidated in this study provide crucial design principles for developing dielectric PMCs with tailored properties,thereby opening new avenues for advanced flexible electronic applications. 展开更多
关键词 Dielectric property regulation HIGH-K Polymer matrix composites(PMCs) Capacitive proximity sensor
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Evaluation and forecast of the regional marine innovation ecosystem’s competitiveness:A systematic multivariate grey interval model with spatial proximity effects
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作者 LI Xuemei LI Na DING Song 《Journal of Geographical Sciences》 2026年第2期363-398,共36页
Establishing a Regional Marine Innovation Ecosystem(RMIE)is crucial for advancing China’s maritime power strategy.Concurrently,developing a competitive RMIE serves as a strategic lever to enhance the global competiti... Establishing a Regional Marine Innovation Ecosystem(RMIE)is crucial for advancing China’s maritime power strategy.Concurrently,developing a competitive RMIE serves as a strategic lever to enhance the global competitiveness of China’s marine science sector.However,research on the competitiveness of RMIE is limited.To this end,this study constructs an evaluation index system based on ecological niche theory to assess the competitiveness of RMIE in China from 2008 to 2020.The findings indicate generally fluctuating upward trends in RMIE’s competitiveness,with Shandong,Jiangsu,and Guangdong showing relatively strong positions.Notably,there are significant intra-regional imbalances and inter-regional asynchrony in RMIE’s competitiveness across China’s three major marine economic circles.Recognizing that forecasting RMIE competitiveness can inform policy formulation,this paper proposes a systematic multivariate grey interval prediction model that incorporates spatial proximity effects.This model effectively captures the interval and uncertainty characteristics of RMIE’s competitiveness while considering spatial relationships among regions.Results from comparative analysis,robustness tests,and sensitivity analysis demonstrate its superior applicability and forecasting accuracy.Additionally,interval forecasts and scenario analyses suggest that RMIE competitiveness will maintain stable growth,although unbalanced and unsynchronized development is likely to persist.Overall,the approach developed for evaluating and forecasting RMIE competitiveness offers valuable insights for effective policy formulation. 展开更多
关键词 grey model regional marine innovation ecosystem ecological niche theory multivariate grey interval prediction model spatial proximity effects
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Artificial Cooper-Pair Density Modulation in Buckled Heterostructure
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作者 Zhongrui Wang Yingbo Wang +10 位作者 Xiangjia Bai Lu Cao Yucheng Xue Yang Cao Dawei Zhai Hong-Jun Gao Francois M.Peeters Bert Jorissen Lucian Covaci Yuhang Jiang Jinhai Mao 《Chinese Physics Letters》 2026年第3期147-176,共30页
erized by a periodic real-space modulation of the superconducting pairing order parameter,is a novel quantum phase observed in superconducting(SC)systems.It is believed to play a key role in understanding the pseudoga... erized by a periodic real-space modulation of the superconducting pairing order parameter,is a novel quantum phase observed in superconducting(SC)systems.It is believed to play a key role in understanding the pseudogap phase of superconductors and has recently been discovered in bulk cuprates,transition-metal dichalcogenide,and other unconventional superconductors.However,artificially engineered PDW in designable two-dimensional materials remain rare.In this paper,we report a strain-assisted strategy to realize cooper-pair density modulation in a van der Waals heterostructure:graphene on SC 2H-NbSe2.Superconductivity is induced in graphene via the proximity effect.Meanwhile,the graphene membrane spontaneously buckles into a periodic structure owing to strain,featuring a spatially modulated local density of states(LDOS).The interplay between the spatially modulated LDOS and the proximity-induced superconductivity results in an oscillatory pair density determined by the buckled geometry,constituting an artificial PDW.This approach enables the engineering of PDWs with periodicities of up to tens of nanometers and allows their realization in a variety of heterostructures with tailored designs.Our work provides new insights into the investigation of PDW physics using predesigned two-dimensional materials. 展开更多
关键词 strain assisted strategy graphene proximity effect quantum phase artificial Cooper pair density modulation van der waals heterostructure pseudogap phase bulk cupratestransition metal
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Temperature-dependent magnetotransport properties of Fe_(2)O_(4)/Pt heterostructure
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作者 Haomang He Ruijie Xu +2 位作者 Anke Song Zhongqiang Chen Xuefeng Wang 《Chinese Physics B》 2026年第1期280-285,共6页
We report on the growth of CoFe_(2)O_(4)/Pt heterostructure and their magnetotransport properties.The magnetoresistance under high magnetic fields exhibits a sign change when the temperature increases from 5 K to 10 K... We report on the growth of CoFe_(2)O_(4)/Pt heterostructure and their magnetotransport properties.The magnetoresistance under high magnetic fields exhibits a sign change when the temperature increases from 5 K to 10 K.The anomalous Hall resistance decreases as the temperature increases.Furthermore,angle-dependent magnetoresistance indicates that the observed magnetotransport behaviors originate from the competition between the spin Hall magnetoresistance and magnetic proximity effect. 展开更多
关键词 MAGNETOTRANSPORT magnetoresistance anomalous Hall effect Fe_(2)O_(4)/Pt heterostructure magnetic proximity effect
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Comparative study of clinical efficacy of laparoscopic proximal gastrectomy with double-channel anastomosis and tubular gastroesophageal anastomosis 被引量:2
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作者 Mian Wang Li-Li Zhang +7 位作者 Gang Wang Yong-Chang Miao Tao Zhang Lei Qiu Gui-Da Fang Feng Lu Da-Lai Xu Peng Yu 《World Journal of Gastrointestinal Surgery》 2025年第1期184-192,共9页
BACKGROUND According to statistics,the incidence of proximal gastric cancer has gradually increased in recent years,posing a serious threat to human health.Tubular gastroesophageal anastomosis and double-channel anast... BACKGROUND According to statistics,the incidence of proximal gastric cancer has gradually increased in recent years,posing a serious threat to human health.Tubular gastroesophageal anastomosis and double-channel anastomosis are two relatively mature anti-reflux procedures.A comparison of these two surgical procedures,tubular gastroesophageal anastomosis and double-channel anastomosis,has rarely been reported.Therefore,this study aimed to investigate the effects of these two reconstruction methods on the quality of life of patients with proximal gastric cancer after proximal gastrectomy.AIM To compare short-term clinical results of laparoscopic proximal gastrectomy with double-channel anastomosis vs tubular gastric anastomosis.METHODS Patients who underwent proximal gastrectomy at our hospital between January 2020 and January 2023 were enrolled in this retrospective cohort study.The patients were divided into an experimental group(double-channel anastomosis,33 cases)and a control group(tubular gastric anastomosis,30 cases).Baseline characteristics,surgical data,postoperative morbidities,and postoperative nutrition were recorded.RESULTS The differences in baseline data,surgical data,and postoperative complications(20.0%vs 21.2%)were not statistically significant between the two groups.There were no statistically significant differences in the levels of postoperative nutrition indicators between the two groups of patients during the preoperative period and at 3 months postoperatively.In addition,the levels of postoperative nutrition indicators in patients in the experimental group declined significantly less at 6 months and 12 months postoperatively compared with those of the control group(P<0.05).At 12 months postoperatively,the difference in anastomotic reflux esophagitis between the two groups was statistically significant(P<0.05)with the experimental group showing less reflux esophagitis.CONCLUSION Both double-channel anastomosis and tubular gastric anastomosis after proximal gastrectomy are safe and feasible.Double-channel anastomosis has a better anti-reflux effect and is more beneficial in improving the postoperative nutritional status. 展开更多
关键词 LAPAROSCOPIC Gastric cancer Proximal gastrectomy Double-channel anastomosis Tubular gastric anastomosis
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Kamikawa anastomosis in proximal gastrectomy for gastric cancer:A systematic review and meta-analysis 被引量:1
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作者 Cheng-Cong Liu Jian Yang +2 位作者 Gang Yin Zhen Tian Chen Qin 《World Journal of Gastrointestinal Surgery》 2025年第8期408-429,共22页
BACKGROUND Proximal gastrectomy(PG)for gastric cancer requires a delicate balance between oncological radicality and postoperative quality of life to mitigate reflux complications.Although the Kamikawa anastomosis has... BACKGROUND Proximal gastrectomy(PG)for gastric cancer requires a delicate balance between oncological radicality and postoperative quality of life to mitigate reflux complications.Although the Kamikawa anastomosis has gained attention for its theoretical anti-reflux advantages,robust clinical evidence remains limited.AIM To comprehensively evaluate the efficacy,safety,and nutritional outcomes of the Kamikawa anastomosis in PG,thereby addressing a critical gap in surgical decision-making.METHODS Following PRISMA guidelines,we systematically searched PubMed,Embase,and the Cochrane Library for studies on Kamikawa anastomosis after PG.Data were pooled using fixed-or random-effects models based on heterogeneity levels(I2 statistics).The risk of bias was evaluated using Risk of Bias in Non-randomized Studies of Interventions.The protocol was prospectively registered in PROSPERO.RESULTS Of 106 screened studies,20 involving 2291 patients were included.Most studies(85%)originated from Japan,with a mean patient age of 54-73 years and a male predominance(68.1%).Overall pooled incidence of 30-day postoperative complications was 9.9%[95%confidence interval(95%CI):6.8-12.9],with major complications(Clavien-Dindo grade≥III)occurring in 6.1%(95%CI:4.6-7.7).Anastomosis-related complications were observed in 7.2%of cases,comprising leakage 1.8%(95%CI:1.1-2.4),stenosis in 7.2%(95%CI:5.8-8.5),and bleeding in 0.7%(95%CI:0.1-1.2).Pooled incidence of reflux esophagitis was 4%(95%CI:2.7-5.3)for all LA grades at 12-month follow-up,with 28.3%(95%CI:14.7-41.9)of patients requiring regular proton pump inhibitor use.Operative outcomes demonstrated a pooled mean operative time of 349.5 minutes(95%CI:331-380),estimated blood loss of 351.5 mL(95%CI:264-495),and postoperative hospital stay of 12.3 days(95%CI:11.5-13.1).Nutritional outcomes revealed 11.4%(95%CI:10.6-12.2)body weight loss at one year.Comparative analyses showed equivalent safety profiles between the Kamikawa anastomosis and double-tract reconstruction but longer operative times(P<0.001)compared with total gastrectomy.CONCLUSION These findings underscore the clinical viability of the Kamikawa anastomosis following PG,demonstrating favorable anti-reflux efficacy,acceptable incidence of anastomotic strictures,and preservation of nutritional status. 展开更多
关键词 Double-flap technique Kamikawa Proximal gastrectomy Gastric cancer
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A Flexible‑Integrated Multimodal Hydrogel‑Based Sensing Patch 被引量:1
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作者 Peng Wang Guoqing Wang +4 位作者 Guifen Sun Chenchen Bao Yang Li Chuizhou Meng Zhao Yao 《Nano-Micro Letters》 2025年第7期107-125,共19页
Sleep monitoring is an important part of health management because sleep quality is crucial for restoration of human health.However,current commercial products of polysomnography are cumbersome with connecting wires a... Sleep monitoring is an important part of health management because sleep quality is crucial for restoration of human health.However,current commercial products of polysomnography are cumbersome with connecting wires and state-of-the-art flexible sensors are still interferential for being attached to the body.Herein,we develop a flexible-integrated multimodal sensing patch based on hydrogel and its application in unconstraint sleep monitoring.The patch comprises a bottom hydrogel-based dualmode pressure–temperature sensing layer and a top electrospun nanofiber-based non-contact detection layer as one integrated device.The hydrogel as core substrate exhibits strong toughness and water retention,and the multimodal sensing of temperature,pressure,and non-contact proximity is realized based on different sensing mechanisms with no crosstalk interference.The multimodal sensing function is verified in a simulated real-world scenario by a robotic hand grasping objects to validate its practicability.Multiple multimodal sensing patches integrated on different locations of a pillow are assembled for intelligent sleep monitoring.Versatile human–pillow interaction information as well as their evolution over time are acquired and analyzed by a one-dimensional convolutional neural network.Track of head movement and recognition of bad patterns that may lead to poor sleep are achieved,which provides a promising approach for sleep monitoring. 展开更多
关键词 Multimodal sensing Proximity sensor Pressure sensor Temperature sensor Electrospun nanofibers
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Enhanced hydrogen evolution in neutral media via proximity effect of Ru/RuO_(2)-TiO_(2) nanocatalysts 被引量:1
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作者 Yifan Yang Lixiong Xu +5 位作者 Chenyue Li Rongqian Ning Jun Ma Mengqin Yao Shuo Geng Fei Liu 《Journal of Materials Science & Technology》 2025年第9期173-181,共9页
Ru-based nanomaterials have been demonstrated to be highly active electrocatalysts for hydrogen evo-lution reaction(HER),yet weak water adsorption and splitting ability in neutral media thus it is rather difficult for... Ru-based nanomaterials have been demonstrated to be highly active electrocatalysts for hydrogen evo-lution reaction(HER),yet weak water adsorption and splitting ability in neutral media thus it is rather difficult for the intermediates to adsorb on the active site.Herein,we introduce a concept of the prox-imity effect,com prising adjacent Ru and RuO_(2) nanoparticles coupled on TiO_(2)(Ru/RuO_(2)-TiO_(2)),for the synergic promotion of water molecule adsorption and splitting,significantly enhancing HER electrocatal-ysis performance.The in-situ spectroscopy experiments and density function theory(DFT)simulations demonstrated that the proximity effect between the adjacent Ru nanoparticles and RuO_(2) nanoparticles can accelerate water adsorption and splitting.As a result,the as-made Ru/RuO_(2)-TiO_(2) only need overpo-tentials of 52.7,16.0,and 16.4 mV to achieve the current density of 10 mA cm-2 in neutral,acid,and alkaline media,respectively.The mass activity of Ru/RuO_(2)-TiO_(2) in neutral media is 320 and 117 times higher than that of commercial Ru/C and Pt/C at the overpotential of 100 mV,respectively.This work emphasizes the proximity effect for activation of reactants which can be extended to other electrocat-alytic reactions. 展开更多
关键词 Hydrogen evolution reaction Water activation Proximity effect RUTHENIUM
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海外英文期刊中国共产党研究成果题录(2017年)
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作者 王野(整理) 《国外理论动态》 北大核心 2025年第3期F0003-F0003,共1页
1.A.Mertha,“‘Stressing Out’:Cadre Calibration and Affective Proximity to the CCP in Reform-Era China”,The China Quarterly,Vol.229,2017,pp.64-85.2.B.L.McCormick,“Book Review of‘The Chinese Communist Party's C... 1.A.Mertha,“‘Stressing Out’:Cadre Calibration and Affective Proximity to the CCP in Reform-Era China”,The China Quarterly,Vol.229,2017,pp.64-85.2.B.L.McCormick,“Book Review of‘The Chinese Communist Party's Capacity to Rule:Ideology,Legitimacy and Party Cohesion’”,The China Journal,Vol.77,2017,pp.161-163. 展开更多
关键词 affective proximity chinese communist party party cohesion IDEOLOGY LEGITIMACY cadre calibration
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Proximal gastrectomy with tubular stomach reconstruction vs total gastrectomy for proximal gastric cancer following neoadjuvant chemotherapy:A multicenter retrospective study
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作者 Yi-Ming Lu Peng Jin +5 位作者 Hai-Kuo Wang Xin-Xin Shao Hai-Tao Hu Yu-Juan Jiang Wang-Yao Li Yan-Tao Tian 《World Journal of Gastrointestinal Surgery》 2025年第5期103-116,共14页
BACKGROUND Gastric cancer(GC)is a major global health challenge,and the treatment of proximal GC in particular presents unique clinical and surgical complexities.Currently,there is no consensus on whether proximal gas... BACKGROUND Gastric cancer(GC)is a major global health challenge,and the treatment of proximal GC in particular presents unique clinical and surgical complexities.Currently,there is no consensus on whether proximal gastrectomy(PG)or total gastrectomy(TG)should be used for advanced proximal GC,and the choice of postoperative gastrointestinal reconstruction method remains controversial.AIM To compare the short-term efficacy,long-term survival,and postoperative reflux outcomes of PG with tubular stomach reconstruction vs TG with Roux-en-Y re-construction in patients with proximal GC following neoadjuvant chemotherapy(NACT)in an effort to provide valuable insights for clinical decision-making regarding the optimal surgical approach.METHODS A multicenter retrospective cohort study was conducted at two Chinese medical centers between December,2012 and December,2022.Patients with histologically confirmed proximal GC who received NACT followed by either PG with tubular stomach reconstruction or TG with Roux-en-Y reconstruction were included.Propensity score matching(PSM)was performed to balance baseline characteristics,and the primary endpoint was 5-year overall survival(OS).Se-condary endpoints included recurrence-free survival(RFS),postoperative complications,and reflux severity.RESULTS After PSM,244 patients(122 PG,122 TG)were finally included and all baseline characteristics were comparable between groups.The PG group had a significantly shorter operation time compared to the TG group(189.50 vs 215.00 minutes,P<0.001),with no differences in intraoperative blood loss or postoperative complications(19.68%vs 14.75%,P=0.792).The 5-year OS rates were 52.7%vs 45.5%(P=0.330),and 5-year RFS rates were 54.3%vs 47.6%(P=0.356)for the PG and TG groups,respectively.Reflux symptoms(18.0%vs 31.1%,P=0.017)and clinically significant reflux based on gastroesophageal reflux disease questionnaire scores≥8(7.4%vs 21.3%,P<0.001)were significantly less frequent in the PG group.Multivariate analysis identified histological differentiation(HR=2.98,95%CI:2.03-4.36,P<0.001)and tumor size(HR=0.26,95%CI:0.17-0.41 for tumors≤4 cm,P<0.001)as independent prognostic factors.CONCLUSION PG with tubular stomach reconstruction is comparable to TG in terms of surgical safety and long-term oncological outcomes for proximal GC patients following NACT.Additionally,PG has the advantages of shorter operation time and lower rates of postoperative reflux,suggesting potential benefits for patient quality of life.Notably,the analysis of postoperative prognostic factors,including histological differentiation and tumor size,further informs clinical decision-making and highlights the importance of individualized treatment strategies. 展开更多
关键词 Proximal gastric cancer Proximal gastrectomy Total gastrectomy Neoadjuvant chemotherapy Tubular stomach reconstruction REFLUX
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Unusual roles of ceria as the support of a single-atom catalyst in hydroisomerization of n-heptane:Phase boundary acts as transport channels between different active centers
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作者 Hao Qin Hui Wan Guofeng Guan 《Journal of Rare Earths》 2025年第2期276-283,I0002,共9页
Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing.Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation.Herein,th... Hydroisomerization of n-alkanes plays an important role in fuel and lubricants processing.Bifunctional catalysts with ultralow platinum loading have recently been reported successively for hydroisomerisation.Herein,the catalysts were prepared successfully with different methods to improve the catalytic performance.The conversion of 0.01%Pt1@CeOx/SAPO-11 prepared by co-calcination method(0.01%Pt1@CS-c)is 71.4%,25%higher than the other prepared by precipitation method.The turnover frequency per active surface platinum site(TOFPt)of 0.01%Ptl@CS-c is as high as 13115 h^(-1).Revealed by the X-ray photoelectron spectroscopy(XPS)results,the quality of phase boundary/intersurface between ceria and zeolite is found significantly different.The conjunction quality of phase boundary directly affects the spillover rate of intermediate species,which further leads to an apparent activity difference.In addition,the possible role of ceria in the reaction is discussed,rather than just as a carrier for the active metal atoms. 展开更多
关键词 Rare earths HYDROISOMERIZATION SPILLOVER Proximity Single-atom catalysis Intermediate
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Long-term follow-up result of short metaphyseal femoral stem in primary total hip arthroplasty:A retrospective study
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作者 Manoj Kumar Ayush Sharma +2 位作者 Vivek P Ksheerasagar Akash K Ghosh Mukund Lal 《World Journal of Orthopedics》 2025年第1期40-45,共6页
BACKGROUND Total hip arthroplasty(THA)has increased along with an increasing demand for improved quality of life.Combined with prolonged life expectancy,the number of revision surgeries is expected to increase.Stress ... BACKGROUND Total hip arthroplasty(THA)has increased along with an increasing demand for improved quality of life.Combined with prolonged life expectancy,the number of revision surgeries is expected to increase.Stress shielding is a significant issue with traditional femoral stems used in THA,making revision surgeries particularly challenging in younger patients.This has sparked renewed interest in studying safety and functional outcomes of short metaphyseal femoral stems,which have the potential to alleviate these challenges and simplify revision surgeries.AIM To evaluate the long-term outcomes of short-stem THA.METHODS A total of 124 hips that underwent THA using the short femoral stem(TRILOCK®Depuy)between May 2006 and November 2008 were included in this study.Patients were followed for a period of 15 years.Outcomes were assessed in terms of pain relief,hip joint range of motion,improvement in mobility,and functional outcomes using the modified Harris Hip Score,Oxford hip score,and Western Ontario and McMaster Universities Osteoarthritis index score.RESULTS A total of 124 hips in 98 patients were evaluated.Significant improvements in functional outcomes were observed over the 15-year follow-up period,with no cases of subsidence,implant loosening,or complications necessitating revision surgery.The only complication reported was heterotopic ossification in 1 patient.CONCLUSION Short metaphyseal stems provide better functional outcomes with early mobilization,and its long-term follow-up without subsidence,implant loosening,or proximal femoral bone loss simplifies revision surgery in younger patients. 展开更多
关键词 Short stem total hip replacement Short metaphyseal stem Uncemented hip replacement Proximal femur osteolysis Proximal femur bone loss
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Controlled proximal contractions with an application to a class of integral equations
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作者 Mudasir Younis Haroon Ahmad 《Applied Mathematics(A Journal of Chinese Universities)》 2025年第3期645-665,共21页
In this study,we explore some of the best proximity point results for generalized proximal contractions in the setting of double-controlled metric-type spaces.A non-trivial example is given to elucidate our analysis,a... In this study,we explore some of the best proximity point results for generalized proximal contractions in the setting of double-controlled metric-type spaces.A non-trivial example is given to elucidate our analysis,and some novel results are derived.The discovered results generalize previously known results in the context of a double controlled metric type space environment.This article’s proximity point results are the first of their kind in the realm of controlled metric spaces.To build on the results achieved in this article,we present an application demonstrating the usability of the given results. 展开更多
关键词 integral equation double controlled metric type space proximal contractive mappings coincidence best proximity point
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A proximity tagging strategy utilizing an activated aldehyde group as the active site
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作者 Mengfan Zhang Lingyan Liu +2 位作者 Peng Wei Wei Feng Tao Yi 《Chinese Chemical Letters》 2025年第4期605-610,共6页
Utilizing small molecules as markers for specific cells or organs within biosystems is a crucial approach for studying and regulating physiological processes. However, current tagging strategies, due to the presence o... Utilizing small molecules as markers for specific cells or organs within biosystems is a crucial approach for studying and regulating physiological processes. However, current tagging strategies, due to the presence of exposed highly reactive groups, suffer from drawbacks such as low tagging efficiency or insufficient spatial specificity, thereby diminishing their expected effectiveness. Consequently, there is a pressing need to develop a strategy capable of in situ labeling of active groups in response to cellular or in vivo stimuli, ensuring both high tagging efficiency and spatial specificity. In this work, we devised a strategy for releasing aldehyde groups activated by hypochlorous acid(HOCl). Compounds synthesized through this strategy can release the fiuorophore methylene blue(MB) and aldehyde-based compounds upon HOCl activation. Given high reactivity of the released aldehyde group, it can effectively interact with macromolecules in biological systems, facilitating tagging and enabling prolonged imaging. To validate this concept, we further incorporated a naphthalimide structure with stable light emission to create SW-110. SW-110 can specifically respond to in vitro and endogenous HOCl, when release MB, it also releases naphthalimide fiuorophore with highly reactive aldehyde group for tagging within cells. This strategy provides a simple but efficient strategy for proximity tagging in situ. 展开更多
关键词 ROS ALDEHYDE FLUORESCENCE Methylene blue Proximity tagging strategy
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Hypertension and tachycardia induced by irreversible electroporation in pancreatic cancer:An analysis based on clinical data
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作者 Hong-Mei Li Yan-Li Xing +3 位作者 Zi-Qing Chen Shi-Xiong Duan Yang-Yang Ma Li-Zhi Niu 《World Journal of Gastrointestinal Surgery》 2025年第9期272-279,共8页
BACKGROUND Irreversible electroporation(IRE)is a novel non-thermal ablation technology for unresectable tumors.Hypertension and tachycardia usually occur during the IRE.To date,there has been little explanation about ... BACKGROUND Irreversible electroporation(IRE)is a novel non-thermal ablation technology for unresectable tumors.Hypertension and tachycardia usually occur during the IRE.To date,there has been little explanation about this phenomenon.AIM To investigate the reasons of hypertension and tachycardia and appropriate preventive measures.METHODS IRE was performed under general anesthesia and neuromuscular blockade.Systolic blood pressures,diastolic blood pressures,heart rate,and the distance of the electrode from abdominal aorta and adrenal gland during IRE were recorded.RESULTS All of 78 patients underwent 96 IRE sessions,44(56.4%)patients occurred hypertension when the electrode was close to the abdominal aorta(<2.0 cm).The median systolic blood pressures and diastolic blood pressures was 194 and 108 mmHg.Furthermore,11(14.1%)patients occurred tachycardia when the electrode was close to the adrenal gland(<1.3 cm).The median heart rate of patients with tachycardia was 114 beats per minute.Furthermore,hypertension and tachycardia can be prevented with nicardipine and esmolol before treatment.CONCLUSION Intraoperative hypertension and tachycardia occur because electrodes close to the abdominal aorta(<2.0 cm)and adrenal glands(<1.3 cm),which can be prevented by preoperative treatment of vasoactive drugs. 展开更多
关键词 Irreversible electroporation Pancreatic cancer HYPERTENSION TACHYCARDIA Adrenal gland proximity Hemodynamic changes
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