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| 1 | Efficient first-principles prediction of solid stability:Towards chemical accuracy显示文摘The question of material stability is of fundamental importance to any analysis of system properties in condensed matter physics and materials science.The ability to evaluate chemical stability,i.e.,whether a stoichiometry will persist in some chemical environment,and structure selection,i.e.what crystal structure a stoichiometry will adopt,is critical to the prediction of materials synthesis,reactivity and properties.Here,we demonstrate that density functional theory,with the recently developed strongly constrained and appropriately normed(SCAN)functional,has advanced to a point where both facets of the stability problem can be reliably and efficiently predicted for main group compounds,while transition metal compounds are improved but remain a challenge.SCAN therefore offers a robust model for a significant portion of the periodic table,presenting an opportunity for the development of novel materials and the study of fine phase transformations even in largely unexplored systems with little to no experimental data. | Yubo Zhang Daniil A.Kitchaev Julia Yang Tina Chen Stephen T.Dacek Rafael A.Sarmiento-Pérez Maguel A.L.Marques Haowei Peng Gerbrand Ceder John P.Perdew Jianwei Sun | 2018 | npj Computational Materials2018，，1： | 7 |
| 2 | Different Transcription Profiles of SOCS-3,ob and IGF-I Genes and their Possible Correlations in Obese and Lean Pigs显示文摘猪品种在胖免职和肌肉发展能力有重要差别。然而,在这些差别后面的分子的机制仍然是 unknown.Inthis 学习,三候选人基因的表示模式,压制或表明 3 的 cytokine ( SOCS-3 ),肥胖( ob )和像胰岛素的生长因素我( IGF-I ),它涉及脂肪质的新陈代谢或肌肉开发,被分析。全部的 RNA 从 8-month-old Bamei 的背面的下的脂肪质的组织和 longissimus 被提取, Largewhite pigs.Semiquantitative reversetranscription 聚合酶链反应被用来在肌肉组织在脂肪质的组织,和 SOCS-3 和 IGF-I 基因决定 SOCS-3and ob 基因的表示层次。结果证明在脂肪质的组织, SOCS-3 的表示水平在 Bamei 是显著地更高的(肥胖) 猪比那在 Largewhite (瘦) 猪(P<0.01 ) 。然而,在肌肉组织,它在 Largewhite 猪(P<0.01 ) 比那是显著地更低的 inBamei。而且, SOCS-3 的表示断然在肌肉组织在脂肪质的组织和 IGF-I 的被相关到 ob 的。这些调查结果建议在 SOCS-3 基因表达的差别铺平在脂肪质并且肌肉纸巾,在在肌肉组织的 SOCS-3 和 IGF-I 之间的在在脂肪质的组织的 SOCS-3 和 ob 之间的关系,和那,可能贡献在肥胖、瘦的猪之间的不同胖免职和肌肉发展能力。 | Jiangwei WU Bo WANG Haowei ZHANG Taiyong YU Gongshe YANG | 2007 | Acta Biochimica et Biophysica Sinica2007，39，4： | 6 |
| 3 | Mitotic motor CENP-E cooperates with PRC1 in temporal control of central spindle assembly显示文摘Error-free cell division depends on the accurate assembly of the spindle midzone from dynamic spindle microtubules to ensure chromatid segregation during metaphase-anaphase transition.However,the mechanism underlying the key transition from the mitotic spindle to central spindle before anaphase onset remains elusive.Given the prevalence of chromosome instability phenotype in gastric tumorigenesis,we developed a strategy to model context-dependent cell division using a combination of light sheet microscope and 3D gastric organoids.Light sheet microscopic image analyses of 3D organoids showed that CENP-E inhibited cells undergoing aberrant metaphase-anaphase transition and exhibiting chromosome segregation errors during mitosis.Highresolution real-time imaging analyses of 2D cell culture revealed that CENP-E inhibited cells undergoing central spindle splitting and chromosome instability phenotype.Using biotinylated syntelin as an affinity matrix,we found that CENP-E forms a complex with PRC1 in mitotic cells.Chemical inhibition of CENP-E in metaphase by syntelin prevented accurate central spindle assembly by perturbing temporal assembly of PRC1 to the midzone.Thus,CENP-E-mediated PRC1 assembly to the central spindle constitutes a temporal switch to organize dynamic kinetochore microtubules into stable midzone arrays.These findings reveal a previously uncharacterized role of CENP-E in temporal control of central spindle assembly.Since CENP-E is absent from yeast,we reasoned that metazoans evolved an elaborate central spindle organization machinery to ensure accurate sister chromatid segregation during anaphase and cytokinesis. | Xu Liu Leilei Xu Junying Li Phil Y.Yao Wanjuan Wang Hazrat Ismail Haowei Wang Bryce Liao Zhihong Yang Tarsha Ward Ke Ruan Jianchun Zhang Quan Wu Ping He Xia Ding Dongmei Wang Chuanhai Fu Zhen Dou Feng Yan Wenwen Wang Xing Liu Xuebiao Yao | 2020 | Journal of Molecular Cell Biology2020，12，8： | 3 |
| 4 | Determination of Veterinary Drug Residues in Animal-derived Foods by Liquid Chromatography-Mass Spectrometry显示文摘[Objectives]This study was conducted to establish a rapid and effective method for simultaneous extraction of 54 kinds of veterinary drug residues in animal-derived food, including sulfonamides, quinolones, tetracyclines, malachite greens, penicillins, nitroimidazoles, tranquilizers and macrolides, by HPLC-MS. [Methods] The samples were extracted with 80% acetonitrile water(containing 0.1% formic acid), combined with QuEChERS extraction technology and C18 and PSA purification, analyzed by high performance liquid chromatography-mass spectrometry, and quantified by external standard method. The target substances were analyzed on ZORBAX Eclipse C18 chromatographic column using 0.2% formic acid water and 0.2% methanol as mobile phases. The gradient elution mode was used for chromatographic separation and multiple reaction detection. [Results] In the linear range of 0.5-50.0 ng/ml, the linear relationship of the 54 kinds of veterinary drug residues was good, with correlation coefficients(r~2) greater than 0.995, and the detection limits ranged from 0.30 to 1.00 μg/kg. The results showed that the recovery ranged from 75.4% to 118.2% when different matrixes were added for recovery. [Conclusions] This method is simple, efficient, accurate, stable, and highly operable. It is applicable to simultaneous batch screening of veterinary drug residues in animal-derived food, and has high practical application value. | Haowei CUI Kun XIN Guixia YANG | 2023 | Agricultural Biotechnology2023，12，1： | 2 |
| 5 | Current status,trends,and predictions in the burden of gallbladder and biliary tract cancer in China from 1990 to 2019显示文摘Background:Gallbladder and biliary tract cancer(GBTC)has greatly damaged the health of patients and is accompanied by a dismal prognosis.The worldwide distribution of GBTC shows extensive variance and the updated data in China is lacking.This study was to determine the current status,trends,and predictions in the burden of GBTC over the past 30 years in China.Methods:This was a descriptive,epidemiological,secondary analysis of the Global Burden of Disease,Injuries,and Risk Factor Study 2019 data.Data including incidence,prevalence,mortality,and disability-adjusted life years(DALYs)of GBTC in China by year,age,and sex were assessed.Joinpoint regression analysis was conducted to evaluate trends of disease burden due to GBTC from 1990 to 2019.Nordpred age-period-cohort analysis was applied for the projection of mortality and incidence due to GBTC from 2019 to 2044.Results:Nationally,there were 38,634(95%uncertainty interval[UI]:27,350-46,512)new cases and 47,278(95%UI:32,889-57,229)patients due to GBTC,causing 34,462(95%UI:25,220-41,231)deaths,and 763,584(95%UI:566,755-920,493)DALYs in 2019.Both cases and rates of burden owing to GBTC were heavier among males and at old age.From 1990 to 2019,the age-standardized rates of incidence,prevalence,mortality,and DALYs of GBTC generally increased from 1990 to 2019,with average annual percentage change at 0.8%(95%confidential interval[CI]:0.6-1.0%),1.3%(95%CI:1.1-1.5%),0.4%(95%CI:0.2-0.6%),and 0.2%(95%CI:0.1-0.4%),respectively.Even though the age-standardized incidence rate and agestandardized mortality rate in both sexes were predicted to decline gradually from 2019 to 2044,the number of new cases and deaths were expected to grow steadily.Conclusions:GBTC is becoming a major health burden in China,particularly among males and older individuals.Given the aging population and increasing burden,effective strategies and measurements are urged to prevent or reduce the number of new cases and deaths of GBTC. | Shimin Chen Ke Han Yang Song Shaohua Liu Xuehang Li Shengshu Wang Haowei Li Rongrong Li Jianhua Wang Yao He Miao Liu | 2022 | Chinese Medical Journal2022，，14： | 2 |
| 6 | Estimating the Parental Magma Composition and Temperature of the Xiaohaizi Cumulate-Bearing Ultramafic Rock: Implication for Magma Evolution of the Tarim Large Igneous Province, Northwestern China显示文摘The ultramafic dikes in the Tarim large igneous province(Tarim LIP), exposed in the Xiaohaizi area in the northwestern Tarim Basin of northwestern China, have porphyritic textures, and the olivine and clinopyroxene are as the major phenocryst phases. The groundmass therein consists of clinopyroxene, plagioclase and Fe-Ti oxides, with the cryptocrystalline texture. The olivine phenocrysts in one typical ultramafic dike have Fo(Mg/(Mg+Fe)) numbers ranging from 73 to 85, which are not in equilibrium with the olivine(Mg# of 89) from the host rock crystalized. Combined with microscope observation, both the olivine and clinopyroxene phenocrysts as well as some Fe-Ti oxides in the ultramafic rock are accounted as cumulates. The liquid(parental magma) composition of SiO_2 of 45.00 wt.%–48.82 wt.%, MgO of 9.93 wt.%– 18.56 wt.%, FeO of 5.85 wt.%–14.17 wt.%, CaO of 7.54 wt.%–11.52 wt.%, Al_2O_3 of 8.70 wt.%–11.62 wt.% and TiO_2 of 0.00 wt.%–3.43 wt.% in the Xiaohaizi ultramafic rock was estimated by mass balance, and the results show a reasonable liquid proportion in the cumulate-bearing ultramafic dike(ca. 45%–60% in the whole rock). The estimated parental magma composition corresponds to a melting temperature of 1 300–1 550 oC, which is equal or higher than those of a normal asthenosphere mantle, supporting the involvement of a mantle plume. Combined with other previous studies, an evolution model for the formation processes of the Xiaohaizi ultramafic dike of the Tarim LIP is proposed. | Haowei Sun Yinqi Li Zilong Li Siyuan Zou Charles H.Langmuir Hanlin Chen Shufeng Yang Zhongyuan Ren | 2016 | Journal of Earth Science2016，27，3： | 2 |
| 7 | A“T.E.S.T.”hydrogel bioadhesive assisted by corneal cross-linking for in situ sutureless corneal repair显示文摘Corneal transplantation is an effective clinical treatment for corneal diseases,which,however,is limited by donor corneas.It is of great clinical value to develop bioadhesive corneal patches with functions of“Transparency”and“Epithelium&Stroma generation”,as well as“Suturelessness”and“Toughness”.To simultaneously meet the“T.E.S.T.”requirements,a light-curable hydrogel is designed based on methacryloylated gelatin(GelMA),Pluronic F127 diacrylate(F127DA)&Aldehyded Pluronic F127(AF127)co-assembled bi-functional micelles and collagen type I(COL I),combined with clinically applied corneal cross-linking(CXL)technology for repairing damaged cornea.The patch formed after 5 min of ultraviolet irradiation possesses transparent,highly tough,and strongly bio-adhesive performance.Multiple cross-linking makes the patch withstand deformation near 600%and exhibit a burst pressure larger than 400 mmHg,significantly higher than normal intraocular pressure(10-21 mmHg).Besides,the slower degradation than GelMA-F127DA&AF127 hydrogel without COL I makes hydrogel patch stable on stromal beds in vivo,supporting the regrowth of corneal epithelium and stroma.The hydrogel patch can replace deep corneal stromal defects and well bio-integrate into the corneal tissue in rabbit models within 4 weeks,showing great potential in surgeries for keratoconus and other corneal diseases by combining with CXL. | Meiyan Li Ruoyan Wei Chang Liu Haowei Fang Weiming Yang Yunzhe Wang Yiyong Xian Kunxi Zhang Yong He Xingtao Zhou | 2023 | Bioactive Materials2023，，7： | 1 |
| 8 | Acetylation of ezrin regulates membrane–cytoskeleton interaction underlying CCL18-elicited cell migration显示文摘Ezrin,a membrane–cytoskeleton linker protein,plays an essential role in cell polarity establishment,cell migration,and division.Recent studies show that ezrin phosphorylation regulates breast cancer metastasis by promoting cancer cell survivor and promotes intrahepatic metastasis via cell migration.However,it was less characterized whether there are additional post-translational modifications and/or post-translational crosstalks on ezrin underlying context-dependent breast cancer cell migration and invasion.Here we show that ezrin is acetylated by p300/CBP-associated factor(PCAF)in breast cancer cells in response to CCL18 stimulation.Ezrin physically interacts with PCAF and is a cognate substrate of PCAF.The acetylation site of ezrin was mapped by mass spectrometric analyses,and dynamic acetylation of ezrin is essential for CCL18-induced breast cancer cell migration and invasion.Mechanistically,the acetylation reduced the lipid-binding activity of ezrin to ensure a robust and dynamic cycling between the plasma membrane and cytosol in response to CCL18 stimulation.Biochemical analyses show that ezrin acetylation prevents the phosphorylation of Thr567.Using atomic force microscopic measurements,our study revealed that acetylation of ezrin induced its unfolding into a dominant structure,which prevents ezrin phosphorylation at Thr567.Thus,these results present a previously undefined mechanism by which CCL18-elicited crosstalks between the acetylation and phosphorylation on ezrin control breast cancer cell migration and invasion.This suggests that targeting PCAF signaling could be a potential therapeutic strategy for combating hyperactive ezrin-driven cancer progression. | Xiaoyu Song Wanjuan Wang Haowei Wang Xiao Yuan Fengrui Yang Lingli Zhao McKay Mullen Shihao Du Najdat Zohbi Saravanakumar Muthusamy Yalei Cao Jiying Jiang Peng Xia Ping He Mingrui Ding Nerimah Emmett Mingming Ma Quan Wu Hadiyah-Nicole Green Xia Ding Dongmei Wang Fengsong Wang Xing Liu | 2020 | Journal of Molecular Cell Biology2020，12，6： | 1 |
| 9 | A source-relay se- lection scheme in two-way amplify-and-forward relaying networks 显示文摘 | Li Enyu Yang Shizhong Wu Haowei | 2012 | IEEE Commun Lett2012，16，10： | 1 |
| 10 | A source-relay selection scheme in two-way amplify-and-forward relaying networks显示文摘 | Li Enyu Yang Shizhong Wu Haowei | 2012 | IEEE Communications Letters2012，16，10： | 1 |
| 11 | Enhancement of intranasalmucosal immunization of mucosal vaccines by ultrasonic treatment显示文摘The pathogens of most infectious diseases invade the host through mucosal sites,and immunization with mucosal vaccines is the best means of combating these infectious diseases.Oral delivery and nasal delivery are the most common methods of mucosal vaccination.However,the delivery process is inefficient,and mucosal vaccination is ineffective because the vaccine formulation is easily and rapidly removed and has difficulty in crossing the mucosal surface.In this paper,we investigated whether the mucosal immune response could be enhanced by ultrasound facilitation of nasal mucosal delivery of vaccine preparations.For this purpose,we used manganese dioxide(MnO2)as the vaccine carrier/adjuvant,coated with chitosan oligosaccharide(COS)to enhance mucosal adsorption,and further physically adsorbed model antigen ovalbumin(OVA)to construct a nanoparticulate vaccine formulation MnO2@COS@OVA.Ultrasound treatment was found to promote antigen delivery and recruitment of dendritic cells(DCs)and macrophages as well as T-cell infiltration in nasal mucosal tissues through nasal mucosal immunization studies.With ultrasound assistance,MnO2@COS@OVA particles promoted the maturation of DCs in vitro and in vivo and promoted the production of effector memory T cells in vivo and cytokine secretion by splenocytes in vitro.In particular,ultrasound treatment significantly increased the levels of secretory IgA antibodies in the nasal mucosa and genital tract mucosa of experimental mice.In addition,the experimental data showed that the MnO2@COS@OVA particles had good biocompatibility and caused no significant damage to the nasal mucosal and vital organ tissue.These data suggest that ultrasound treatment can promote the induction of efficient immune responses to mucosal vaccines and provide new ideas for the opening and clinical translation of mucosal vaccines. | Haowei Xu Yang Liao Mankovskaya Svetlana Deguang Yang Huaibin Wan Zonghua Liu | 2023 | Bio-Design and Manufacturing2023，6，4： | 0 |
| 12 | Mapless navigation for UAVs via reinforcement learning from demonstrations显示文摘This paper is concerned with the problems of mapless navigation for unmanned aerial vehicles in the scenarios with limited sensor accuracy and computing capability.A novel learning-based algorithm called soft actor-critic from demonstrations(SACfD)is proposed,integrating reinforcement learning with imitation learning.Specifically,the maximum entropy reinforcement learning framework is introduced to enhance the exploration capability of the algorithm,upon which the paper explores a way to sufficiently leverage demonstration data to significantly accelerate the convergence rate while improving policy performance reliably.Further,the proposed algorithm enables an implementation of mapless navigation for unmanned aerial vehicles and experimental results show that it outperforms the existing algorithms. | YANG JiaNan LU ShengAo HAN MingHao LI YunPeng MA YuTing LIN ZeFeng LI HaoWei | 2023 | Science China(Technological Sciences)2023，66，5： | 0 |
| 13 | Hot-deformation kinetics analysis and extrusion parameter optimization of a dilute rare-earth free magnesium alloy显示文摘The fundamental research on thermo-mechanical conditions provides an experimental basis for high-performance Mg-Al-Ca-Mn alloys.However, there is a lack of systematical investigation for this series alloys on the hot-deformation kinetics and extrusion parameter optimization. Here, the flow behavior, constitutive model, dynamic recrystallization(DRX) kinetic model and processing map of a dilute rare-earth free Mg-1.3Al-0.4Ca-0.4Mn(AXM100, wt.%) alloy were studied under different hot-compressive conditions. In addition, the extrusion parameter optimization of this alloy was performed based on the hot-processing map. The results showed that the conventional Arrhenius-type strain-related constitutive model only worked well for the flow curves at high temperatures and low strain rates. In comparison, using the machine learning assisted model(support vector regression, SVR) could effectively improve the accuracy between the predicted and experimental values. The DRX kinetic model was established, and a typical necklace-shaped structure preferentially occurred at the original grain boundaries and the second phases. The DRX nucleation weakened the texture intensity, and the further growth caused the more scattered basal texture. The hot-processing maps at different strains were also measured and the optimal hot-processing range could be confirmed at the deformation temperatures of 600~723 K and the strain rates of 0.018~0.563 s^(-1). Based on the optimum hot-processing range, a suitable extrusion parameter was considered as 603 K and 0.1 mm/s and the as-extruded alloy in this parameter exhibited a good strength-ductility synergy(yield strength of ~ 232.1 MPa, ultimate strength of ~ 278.2 MPa and elongation-to-failure of ~ 20.1%). Finally, the strengthening-plasticizing mechanisms and the relationships between the DRXed grain size, yield strength and extrusion parameters were analyzed. | Qinghang Wang Haowei Zhai Zhaoyang Jin Junjie He Qin Yang Wenjun Liu Yulong Li Daolun Chen | 2023 | Journal of Magnesium and Alloys2023，11，9： | 0 |
| 14 | Reader Management and Coordination Component based on Rfid显示文摘 | Wang Haowei Yang Shuhui | 2013 | International Journal of Technology Management2013，，2： | 0 |
| 15 | Intelligent polymeric hydrogen sulfide delivery systems for therapeutic applications显示文摘Hydrogen sulfide(H_(2)S)plays an important role in regulating various pathological processes such as protecting mammalian cell from harmful injuries,promoting tissue regeneration,and regulating the process of various diseases caused by physiological disorders.Studies have revealed that the physiological effects of H_(2)S are highly associated with its concentrations.At relatively low concentration,H_(2)S shows beneficial functions.However,long-time and high-dose donation of H_(2)S would inhibit regular biological process,resulting in cell dysfunction and apoptosis.To regulate the dosage of H_(2)S delivery for precision medicine,H_(2)S delivery systems with intelligent characteristics were developed and a variety of biocompatibility polymers have been utilized to establish intelligent polymeric H_(2)S delivery systems,with the abilities to specifically target the lesions,smartly respond to pathological microenvironments,as well as real-timely monitor H_(2)S delivery and lesion conditions by incorporating imaging-capable moieties.In this review,we focus on the design,preparation,and therapeutic applications of intelligent polymeric H_(2)S delivery systems in cardiovascular therapy,inflammatory therapy,tissue regenerative therapy,cancer therapy and bacteria-associated therapy.Strategies for precise H_(2)S therapies especially imaging-guided H_(2)S theranostics are highlighted.Since H_(2)S donors with stimuli-responsive characters are vital components for establishing intelligent H_(2)S delivery systems,the development of H_(2)S donors is also briefly introduced. | Fan Rong Tengjiao Wang Qian Zhou Haowei Peng Jingtian Yang Quli Fan Peng Li | 2023 | Bioactive Materials2023，，1： | 0 |
| 16 | Resource saving based dwell time allocation and detection threshold optimization in an asynchronous distributed phased array radar network显示文摘The resource optimization plays an important role in an asynchronous Phased Array Radar Network(PARN)tracking multiple targets with Measurement Origin Uncertainty(MOU),i.e.,considering the false alarms and missed detections.A Joint Dwell Time Allocation and Detection Threshold Optimization(JDTADTO)strategy is proposed for resource saving in this case.The Predicted Conditional Cramér-Rao Lower Bound(PC-CRLB)with Bayesian Detector and Amplitude Information(BD-AI)is derived and adopted as the tracking performance metric.The optimization model is formulated as minimizing the difference between the PC-CRLBs and the tracking precision thresholds under the constraints of upper and lower bounds of dwell time and false alarm ratio.It is shown that the objective function is nonconvex due to the Information Reduction Factor(IRF)brought by the MOU.A cyclic minimizer-based solution is proposed for problem solving.Simulation results confirm the flexibility and robustness of the JDTADTO strategy in both sufficient and insufficient resource scenarios.The results also reveal the effectiveness of the proposed strategy compared with the strategies adopting the BD without detection threshold optimization and amplitude information. | Haowei ZHANG Weijian LIU Xiao YANG | 2023 | Chinese Journal of Aeronautics2023，36，11： | 0 |
| 17 | Design of Fine Life Cycle Prediction System for Failure of Medical Equipment显示文摘The inquiry process of traditional medical equipment maintenance management is complex,which has a negative impact on the efficiency and accuracy of medical equipment maintenance management and results in a significant amount of wasted time and resources.To properly predict the failure of medical equipment,a method for failure life cycle prediction of medical equipment was developed.The system is divided into four modules:the whole life cycle management module constructs the life cycle data set of medical devices from the three parts of the management in the early stage,the middle stage,and the later stage;the status detection module monitors the main operation data of the medical device components through the normal value of the relevant sensitive data in the whole life cycle management module;and the main function of the fault diagnosis module is based on the normal value of the relevant sensitive data in the whole life cycle management module.The inference machine diagnoses the operation data of the equipment;the fault prediction module constructs a fine prediction system based on the least square support vector machine algorithm and uses the AFS-ABC algorithm to optimize the model to obtain the optimal model with the regularized parameters and width parameters;the optimal model is then used to predict the failure of medical equipment.Comparative experiments are designed to determine whether or not the design system is effective.The results demonstrate that the suggested system accurately predicts the breakdown of ECG diagnostic equipment and incubators and has a high level of support and dependability.The design system has the minimum prediction error and the quickest program execution time compared to the comparison system.Hence,the design system is able to accurately predict the numerous causes and types of medical device failure. | Ma Haowei Cheng Xu Jing Yang | 2023 | Journal of Artificial Intelligence and Technology2023，3，2： | 0 |
| 18 | Using Rn-222 to Study Human-Regulated River Water-Sediment Input Event in the Estuary显示文摘The implementation of the water sediment regulation scheme(WSRS)is a typical example of artificially controlling land-source input.During WSRS,the water discharge of the Yellow River will increase significantly,and so will the input of terri-genous materials.In this study,we used a natural geochemical tracer 222Rn to quantify terrestrial inputs under the influence of the 2014 WSRS in the Yellow River Estuary.The results indicated that during WSRS the concentration of 222Rn in the estuary increased by about four times than in the period before WSRS.The high-level 222Rn plume disappeared quickly after WSRS,indicating that 222Rn has a very short‘memory effect’in the estuary.Based on the investigation conducted from 2015 to 2016,the concentration of 222Rn tended to be stable in the lower reaches of the Yellow River.During WSRS,the concentrations of 222Rn in the river water in-creased sharply at about 3–5 times greater than in the non-WSRS period.Based on the 222Rn mass balance model,the fluxes of 222Rn caused by submarine groundwater discharge(SGD)were estimated to be(3.5±1.7)×10^(3),(11±3.9)×10^(3),and(5.2±1.9)×10^(3)dpm m^(-2)d^(-1)in the periods before,during,and after WSRS,respectively.This finding indicated that SGD was the major source of 222Rn in the Yellow River Estuary,which can be significantly increased during WSRS.Furthermore,the SGD-associated nutrient fluxes were estimated to be 9.8×10^(3),2.5×102,and 1.1×10^(4)μmolm^(-2)d^(-1)for dissolved inorganic nitrogen,phosphorus,and silicon,respectively,during WSRS or about 2–40 times greater than during the non-WSRS period. | XU Yuezhi XIAO Liu GAO Maosheng YANG Disong ZHAO Shibin XU Haowei WANG Lisha ZHANG Xiaojie | 2023 | Journal of Ocean University of China2023，22，6： | 0 |
| 19 | Using radium isotopes to quantify submarine groundwater discharge at different scales in the Huanghe River Estuary,China显示文摘As an important land-ocean interaction process,submarine groundwater discharge(SGD)is composed of multiple dynamical processes at different scales and plays an important role in the study of coastal ocean geochemical budgets.However,most of the existing studies focus on the quantification of the total groundwater discharge,few studies are about the differentiation and quantification of groundwater discharge processes at different scales(i.e.,short-scale SGD and long-scale SGD).As a world-class river,the Huanghe River is highly turbid and heavily regulated by humans.These natural and anthropogenic factors have a significant impact on groundwater discharge processes in the Huanghe River Estuary(HRE).In this study,the distribution patterns of the natural geochemical tracer radium isotopes(^(224)Ra and^(223)Ra)and other hydrological parameters in the HRE were investigated during four cruises.By solving the mass balance of^(224)Ra and^(223)Ra in the HRE,the long-scale SGD flux was quantified as 0.01−0.19 m/d,and the short-scale SGD flux was 0.03−0.04 m/d.The rate of short-scale SGD remained essentially constant among seasons,while the rate of long-scale SGD varied considerably at different periods and showed a synchronous trend with the variation of river discharge.The results of this study are significant for understanding the SGD dynamics in the HRE and the contribution of SGD to the ocean geochemical budgets. | Haowei Xu Disong Yang Xiaoyi Guo Maosheng Gao Guangquan Chen Diansheng Ji Shengtao Chen Huaming Yu Bochao Xu | 2023 | Acta Oceanologica Sinica2023，42，8： | 0 |
| 20 | Protective performance of shear stiffening gel-modified foam against ballistic impact:Experimental and numerical study显示文摘As one of the most widely used personal protective equipment(PPE),body armors play an important role in protecting the human body from the high-velocity impact of bullets or projectiles.The body torso and critical organs of the wear may suffer severe behind-armor blunt trauma(BABT)even though the impactor is stopped by the body armor.A type of novel composite material through incorporating shear stiffening gel(STG)into ethylene-vinyl acetate(EVA)foam is developed and used as buffer layers to reduce BABT.In this paper,the protective performance of body armors composed of fabric bulletproof layers and a buffer layer made of foam material is investigated both experimentally and numerically.The effectiveness of STG-modified EVA in damage relief is verified by ballistic tests.In parallel with the experimental study,numerical simulations are conducted by LS-DYNA®to investigate the dynamic response of each component and capture the key mechanical parameters,which are hardly obtained from field tests.To fully describe the material behavior under the transient impact,the selected constitutive models take the failure and strain rate effect into consideration.A good agreement between the experimental observations and numerical results is achieved to prove the validity of the modelling method.The tests and simulations show that the impact-induced deformation on the human body is significantly reduced by using STG-modified EVA as the buffering material.The improvement of protective performance is attributed to better dynamic properties and more outstanding energy absorption capability of the composite foam. | Huan Tu Haowei Yang Pengzhao Xu Zhe Yang Fan Tang Cheng Dong Yuchao Chen Lei Ren Wenjian Cao Chenguang Huang Yacong Guo Yanpeng Wei | 2024 | Defence Technology(防务技术)2024，32，2： | 0 |
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