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Scaling of capillary pressure-saturation curve in porous media under various wetting conditions 认领 引用
1
作者 Tian Lan Ran Hu +2 位作者 Xi-Ning Su Zhibing Yang Yi-Feng Chen 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第1期55-72,共18页
The capillary pressure curve provides fundamental insights into the dynamics of fluid-fluid displacement and phase distributions.Capillary scaling is crucial for extrapolating capillary pressure-saturation data from l... The capillary pressure curve provides fundamental insights into the dynamics of fluid-fluid displacement and phase distributions.Capillary scaling is crucial for extrapolating capillary pressure-saturation data from laboratory tests to field applications.However,the classic scaling method fails to capture the effect of wettability as the pore surface approaches neutral wetting.Here,inspired by the role of pore-filling events in controlling fluid-fluid displacement,we perform a theoretical analysis of the burst events occurring during drainage processes.We find that the median threshold capillary pressure,which corresponds to the occurrence of burst events for the median pore throat,is closely correlated with the capillary pressure curve across various contact angles.Using this concept,we propose a new scaling method for capillary pressure curves under various wetting conditions.We conduct microfluidic experiments and pore-network modeling across different contact angles,porosities,and disorders to evaluate the new scaling methods,indicating that the new scaling method performs better than the Leverett J-function as the contact angle approaches 90°.We further perform geometry analysis on the critical radius of curvature for burst events in an ideal tetrahedral arrangement and extend the new scaling method to 3D(three-dimensional)porous media.Model evaluation shows that the 3D version of the scaling method also performs well but requires fewer parameters compared to the Leverett J-function.Our work enhances the prediction and interpretation of experimental data for capillary pressure curves under various wet conditions,and more importantly,establishes a methodology that relates Darcy-scale flow behavior to pore-scale fluid displacements. 展开更多
关键词 Capillary pressure curve Capillary scaling Threshold capillary pressure Microfluidic experiments
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Monte Carlo simulation of the focusing effect of a tapered glass capillary used in MeV‑SIMS on heavy‑ion beam with MeV‑range energy 认领 引用
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作者 Ji‑Wei Lai Tong‑Tong Zhu +4 位作者 Ming‑Ming Yu Yun‑Peng Cao Hong‑Wen Cao Yi‑Han Wang Kun Zhang 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2026年第7期18-30,共13页
Time-of-flight secondary-ion mass spectrometry(TOF-SIMS)is a powerful molecular imaging tool used in biomedical research.To overcome the low yield of non-fragmented molecular ions obtained by conventional(keV)SIMS,a n... Time-of-flight secondary-ion mass spectrometry(TOF-SIMS)is a powerful molecular imaging tool used in biomedical research.To overcome the low yield of non-fragmented molecular ions obtained by conventional(keV)SIMS,a novel SIMS method using MeV heavy primary ions(MeV-SIMS)has gained increasing scientific attention in recent years.We intend to develop an MeV-SIMS setup with a capillary microprobe system based on the 3 MV tandem accelerator as the first MeV-SIMS system in China.Instead of conventional magnetic or electrostatic lenses,a tapered glass capillary is used to collimate the ion beam in this device.To verify the feasibility of collimating or focusing MeV heavy ions using this capillary,understanding the main physical behaviors of MeV heavy ions interacting with the capillary is crucial.In this study,a Monte Carlo simulation program based on the Stopping and Range of Ions in Matter software is developed.The calculated energies and trajectories of heavy ions(e.g.,I ions)are less affected by scattering,and both the scattered ions and recoil atoms ejected from the capillary are well separated from the direct beam in the target area.Under multiple scatterings,the contribution of the first scattering predominates.These results indicate that the capillary exhibits better collimation for heavy ions.In addition,the transmission of direct beams at different air pressures is observed.Heavy ions lose less energy at the same pressure;however,their trajectories are more divergent.The direct beam ions are not affected by the scattered ions at 100 Pa,making it feasible to perform MeV-SIMS analysis under ambient pressure. 展开更多
关键词 MeV-SIMS Glass capillary Focusing effect Monte Carlo simulation Ion-capillary interactions Air pressure
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Capillary water absorption behavior and long-term mechanical response of lightweight soil-based foamed concrete 认领 引用
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作者 Lei-Lei Guan Yong-Gui Chen +3 位作者 Wei-Min Ye Qiong Wang Dong-Bei Wu Yong-Feng Deng 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第7期5592-5607,共16页
Lightweight soil-based foamed concrete presents a sustainable solution for geotechnical applications,but its long-term performance in moisture-rich environments remains a critical concern.This study systematically inv... Lightweight soil-based foamed concrete presents a sustainable solution for geotechnical applications,but its long-term performance in moisture-rich environments remains a critical concern.This study systematically investigates the capillary water absorption behavior and long-term mechanical response,combining capillary water absorption tests,uniaxial compression testing and microstructural characterization.The results demonstrate a distinct three-stage capillary absorption behavior:an initial phase of rapid penetration(quantifiedby coefficient A1),a subsequent period of matrix-governed absorption(A2),and a finalstage dominated by diffusion(A3).The initial absorption coefficientA1 exhibits significantpositive correlations with foam volume fraction φf,soil mass fraction δs,and flyash content δa,whereas it demonstrates an inverse correlation with the water-to-solid ratio δw.The second coefficient A2 is predominantly determined by the distribution and connectivity of matrix pores.Two primary mechanisms compete to shape the mechanical response:strength weakening occurs in cementationdriven systems subjected to long-term water absorption,while enhanced ductility arises from the delayed drainage effects in air-voids-dominated systems.Microstructural analyses reveal a triphasic deterioration sequence initiated by water infiltrationthrough interconnected pores,progressing to pore solution modificationand matrix softening,and ultimately resulting in increased porosity and fracture network development.The study deepens a fundamental understanding of moisture-mechanics coupling in lightweight soil-based foamed concrete while providing practical mix design guidelines for infrastructure applications exposed to water. 展开更多
关键词 Lightweight soil-based foamed concrete Capillary water absorption Mechanical response Microstructural characterization Deterioration mechanism
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Hydro-chemical performance of copper mine waste-based capillary barriers for acid mine drainage control in humid climates 认领 引用
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作者 Longlong Meng Yixin Yang +9 位作者 Sheng Zhou Shunyu Wang Wenyuan Wang Rongjian Tan Linhan Wang Qiong Wang Xinyu Wu Aifang Du Qi Liu Bate Bate 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2026年第6期4600-4616,共17页
Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with ... Capillary barriers offer a cost-effective and environmentally friendly method for acid mine drainage(AMD)control.Existing studies primarily focus on arid and semi-arid climates,whereas few address humid climates with high precipitation,where AMD risks are more severe.This study evaluated the hydro-chemical performance of two anti-seepage-enhanced triple-layer capillary barriers constructed from copper mine wastes,using rainfall simulation,sensor monitoring,and water balance analysis in a model box.An extreme rainfall event(354 mm over 24 h)followed by a 30-d drying period was simulated sequentially.The top two layers of Model Boxes Ⅰ and Ⅱ withstood 60-and 10-year return period rainfalls,respectively,while the bottom layers delayed percolation by 39.4 h and 81.4 h,respectively,after lateral drainage in the coarse-grained layer(CGL).Despite a significant increase in equivalent permeability at CGL breakthrough(e.g.from 9.9×10⁻¹²m/s to 9.3×10⁻¹⁰m/s in Model Box Ⅰ),stable infiltration and low permeability limited percolation to less than 2.5%of rainfall in both barriers.Based on effective particle size and thickness,two empirical relationships were developed to describe the peak capacity and cumulative release rate of the fine-grained layer.Furthermore,the pH and heavy-metal ion concentrations in the lateral drainage remained within standards throughout the 2184.0 h monitoring period,explained by inhibition of the oxidation reaction.In addition,compared to the untreated waste dump,the predicted runoff removal rates achieved by the barriers were 73.4%and 64.8%for Model Boxes Ⅰ and Ⅱ,respectively. 展开更多
关键词 Capillary barrier Copper mine wastes Acid mine drainage Hydro-chemical performance
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Capillary-fiber-based refractometers with scalable performance 认领 引用
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作者 ARDI RAHMAN FLAVIEN BEFFARA +5 位作者 HARIS APRIYANTO OLIVIER DBERNAL FREDERIC SURRE GEORGES HUMBERT JEAN-LOUIS AUGUSTE HAN CHENG SEAT 《Photonics Research》 SCIE EI CAS CSCD 2026年第5期2317-2333,共17页
This research presents,to our knowledge,a novel approach to designing high-resolution bespoke capillary fiber(CF)refractometers by engineering the optical response of the sensor through its cone angle,θcone,and ai... This research presents,to our knowledge,a novel approach to designing high-resolution bespoke capillary fiber(CF)refractometers by engineering the optical response of the sensor through its cone angle,θcone,and air-core collapsed length,z,created by fusion-splicing a single-mode fiber(SMF)with an air-core CF using a CO2laser splicer.We demonstrate that light-sensing medium interaction can be enhanced by the collapsed air-core,which facilitates expansion of the Gaussian beam from the lead-in SMF and promotes effective light trapping within CF’s silica cladding. 展开更多
关键词 scalable performance fusion splicing engineering optical response cone angle air core collapsed length co laser splicer refractometer capillary fiber
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An electrokinetic supercharging-capillary zone electrophoresis approach for the forensic analysis of cocaine and morphine in necrophagous larvae 认领 引用
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作者 Nor Wajihan Muda Naji Arafat Mahat +4 位作者 Aemi Syazwani Abdul Keyon Mohamad Afiq Mohamed Huri Hong Heng See Aedrianee Reeza Alwi Sri Adelila Sari 《Forensic Sciences Research》 CSCD 2026年第1期62-72,共11页
Utilisation of necrophagous larvae in forensic investigations has been gaining popularity.To ensure its admissibility as forensic evidence in the court,the development of validated simultaneous analytical methods spec... Utilisation of necrophagous larvae in forensic investigations has been gaining popularity.To ensure its admissibility as forensic evidence in the court,the development of validated simultaneous analytical methods specific for this matrix proves forensically relevant.Hence,this present research reported,for the first time,the specifically developed and validated online preconcentration electrokinetic supercharging with capillary zone electrophoresis(EKS-CZE)for analysing cocaine and morphine in necrophagous larvae.The optimum conditions were background electrolyte(30 mmol/L disodium phosphate containing 20%methanol(v/v)),hydrodynamic injection of sodium chloride(40 mmol/L,5 kPa,60 s)as the leading electrolyte,electrokinetic injection of the sample(20 s,+10 kV)and the hydrodynamic injection of L-alanine(100 mmol/L,5 kPa,10 s)as the terminating electrolyte.The separation was conducted at+25 kV with ultraviolet detection at 200 nm.The linear range for cocaine(58-500μg/kg)and morphine in larvae(72-500μg/kg)demonstrated the coefficient of determination(R2)greater than 0.995.For cocaine and morphine,the limits of detection were 19.14μg/kg and 23.83μg/kg,and the limits of quantitation were 57.99μg/kg and 72.20μg/kg,respectively.The relative standard deviation(RSD)values(intra-and inter-day repeatability)were below 10%for both analytes,with sensitivity enhancement factor values of 680(cocaine)and 620(morphine),respectively.This novel,optimised,and validated simultaneous EKS-CZE method may prove to be applicable for the determination of cocaine and morphine with potential applications in forensic entomotoxicological casework. 展开更多
关键词 forensic sciences forensic entomotoxicology capillary zone electrophoresis electrokinetic supercharging cocaine morphine necrophagous larvae
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Dispersive liquid-liquid microextraction combined with capillary electrophoresis for simultaneous determination of five fluoroquinolone antibiotics in marine crude drugs,seawater,and seafood samples 认领 引用
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作者 Yingying LOU Guangli ZHAO +6 位作者 Jingyi YAN Dani SUN Jinmao YOU Huiquan XIAO Huitao LIU Guisheng LI Jinhua LI 《Journal of Oceanology and Limnology》 SCIE CAS CSCD 2026年第1期137-149,共13页
To simultaneously enrich,separate,and determine five fluoroquinolone antibiotics(FQs)in marine crude drugs(MCDs),seawater and seafood,we conducted this study using vortex assisted dispersed liquid-liquid microextracti... To simultaneously enrich,separate,and determine five fluoroquinolone antibiotics(FQs)in marine crude drugs(MCDs),seawater and seafood,we conducted this study using vortex assisted dispersed liquid-liquid microextraction(DLLME),followed by capillary electrophoresis(CE)-UV.A single-variable optimization was employed to examine the factors influencing the separation effect of CE and the extraction efficiency of DLLME,including buffer solution,organic solvent,separation voltage,extractant,dispersant,and sample solution pH.Under the optimal conditions,the baseline separation of the five FQs was achieved within 6 min.The analytical performance of the method was assessed using six types of actual samples,including three MCDs of hippocampus,clam,and kelp,seawater,and two seafood of prawn and pomfret,demonstrating good linearity ranging from 0.1-5 or 0.01-5μg/mL.The limits of detection(LODs)and limits of quantification(LOQs)for the five FQs in MCDs were 0.0022-0.0292 and 0.0066-0.0973μg/mL,respectively.The LODs and LOQs in seawater and seafood were 0.0009-0.0262 and 0.0029-0.0874μg/mL,respectively.The matrix effects of this method were evaluated in the hippocampus,seawater,and prawn,and the results show that DLLME could effectively eliminate matrix interference.Satisfactory recovery rates were achieved in all the six tested actual samples.This developed DLLME-CE method was proven simple to operate,accurate and reliable,with high sensitivity,making it suitable for the analysis of multiple antibiotic residues in complex matrices. 展开更多
关键词 fluoroquinolone antibiotic(FQ) dispersive liquid-liquid microextraction(DLLME) capillary electrophoresis(CE) marine crude drug(MCD) seafood seawater
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Field test of the performance of an energy tunnel employing capillary heat exchangers 认领 引用
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作者 Yongming Ji Jinfang He +3 位作者 Xiangyu Guo Silin Zheng Jinfu Zheng Songtao Hu 《Energy and Built Environment》 EI CSCD 2026年第3期742-752,共11页
The integration of capillary heat exchangers(CHEs)with tunnel lining to form an energy tunnel represents a viable and effective approach for the efficient utilization of shallow geothermal energy.Nonetheless,empirical... The integration of capillary heat exchangers(CHEs)with tunnel lining to form an energy tunnel represents a viable and effective approach for the efficient utilization of shallow geothermal energy.Nonetheless,empirical field studies assessing the performance of tunnel lining CHEs are still scarce.To address this gap,a comprehensive testing system has been developed to evaluate the performance of tunnel lining CHEs under diverse conditions,encompassing variable heat flux,variable flow rates,periodically fluctuating inlet temperatures,and distinct installation positions.The results demonstrate that the heat transfer performance of the tunnel lining CHEs is highly efficient.At heating power levels of 200 W and 500 W,the stable temperatures of the CHE outlet water were 29.1℃and 36.8℃,respectively.The heat release rate of the CHEs increased progressively with the rise in flow rate.Specifically,at flow rates of 0.070,0.085,and 0.100 m3/h,the average heat release rate was 61,87,and 115 W/m2,respectively.Over 7 periodic heating cycles(1505 min),the peak heat release rate decreased from 171 W/m2to 148 W/m2,while the minimum heat release rate fell from 88 W/m2to 65 W/m2.This research offers significant design guidelines for the engineering implementation of tunnel lining CHEs. 展开更多
关键词 Shallow geothermal Energy tunnel Tunnel lining exchanger Capillary
Sebia Capillarys 3 OCTA在临床检测中的性能验证与实践探索 认领 引用
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作者 潘慧敏 姚亚男 +5 位作者 黄莹莹 欧阳维富 张娟 赵苠伊 甘慧泉 廖亚龙 《标记免疫分析与临床》 CAS 2026年第1期158-163,共6页
目的对新一代毛细管电泳仪Sebia Capillarys 3 OCTA血清蛋白电泳的临床应用性能进行评价。方法根据国家卫生行业标准和参考文献,对Sebia Capillarys 3 OCTA血清蛋白电泳的准确度、精密度、灵敏度、参考区间、线性范围、携带污染率、可... 目的对新一代毛细管电泳仪Sebia Capillarys 3 OCTA血清蛋白电泳的临床应用性能进行评价。方法根据国家卫生行业标准和参考文献,对Sebia Capillarys 3 OCTA血清蛋白电泳的准确度、精密度、灵敏度、参考区间、线性范围、携带污染率、可比性进行验证及临床结果进行分析。结果与国家卫生健康委员会临床检验中心2024年第一次室间质评物的靶值相比,各区带组分的偏倚均小于10%。Alb区带的批内CV和批间CV均小于4%,α1、α2、β1、β2、γ区带的批内CV和批间CV均小于10%。具有可识别M蛋白浓度为0.19g/L。本研究选择的20份体检样本各区带的百分比值均落在参考区间Alb(55.8%~66.1%)、α1(2.9%~4.9%)、α2(7.1%~11.8%)、β1(4.7%~7.2%)、β2(3.2%~6.5%)、γ(11.1%~18.8%)内。在γ球蛋白的百分比值4.5%~30.4%内,线性范围验证通过,相关系数(R 2)=0.9986,斜率为1.0029。携带污染率符合验收标准。20个临床样本在Capillarys 3 OCTA电泳仪、Hydrasys琼脂糖电泳仪和Capillarys 2 OCTA电泳仪上的检测一致性达100%。血清蛋白电泳对M蛋白的阳性检出率为57.23%,与免疫固定电泳的57.80%比较,差异无统计学意义。γ区M蛋白阳性检出率(47.40%,82/173)最高。结论Sebia Capillarys 3 OCTA血清蛋白电泳具有良好的检测性能,能够满足临床实验室的使用需求。 展开更多
关键词 血清蛋白电泳 Sebia Capillarys 3 OCTA M蛋白 性能验证
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Detailed simulation and characterization of double paraboloidal monocapillary for laboratory x-ray sources 认领 引用
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作者 Shang-Kun Shao Tian-Yu Yuan +7 位作者 Cheng-Bo Li Xing-Yi Wang Lu Hua Yu-Chuan Zhong Jin-Yue Hu Meng-Fang Chen Xue-Peng Sun Tian-Xi Sun 《Chinese Physics B》 SCIE EI CAS CSCD 2025年第12期243-248,共6页
A double-parabola monocapillary(DPM)was designed for laboratory x-ray sources,and its performance was evaluated through numerical simulations and experimental validation.A surface shape error model was developed to ch... A double-parabola monocapillary(DPM)was designed for laboratory x-ray sources,and its performance was evaluated through numerical simulations and experimental validation.A surface shape error model was developed to characterize the DPM surface profile,and ray-tracing methods were used to simulate key properties such as focal spot size,divergence,and transmission efficiency.The simulation results closely matched experimental measurements,validating the proposed model.This surface shape error simulation provides an efficient method for evaluating the impact of slope errors on DPM performance,offering insights for optimal design and precision manufacturing. 展开更多
关键词 double paraboloidal monocapillary capillary x-ray optics laboratory x-ray source
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Changes in retinal capillary density in female with type 2 diabetes and gestational diabetes——an analysis based on OCTA technology 认领 引用 被引量：1
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作者 Jing Zhang Yao Yu +11 位作者 Xian-Mei Zhou Xuan Liao Jin-Yu Hu Qian Ling Jie Zou Cheng Chen Liang-Qi He Hong Wei Xu Chen Yi-Xin Wang Yi Shao Rui-Man Li 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2025年第3期435-448,共14页
AIM:To evaluate alterations in conjunctival vascular density(CVD)and macular capillary density(MCD)in female patients with type 2 diabetes mellitus(T2DM)and gestational diabetes mellitus(GDM)using optical coherence to... AIM:To evaluate alterations in conjunctival vascular density(CVD)and macular capillary density(MCD)in female patients with type 2 diabetes mellitus(T2DM)and gestational diabetes mellitus(GDM)using optical coherence tomography angiography(OCTA).METHODS:A total of 60 female participants were recruited,comprising 20 patients with T2DM,20 patients with GDM,and 20 healthy age-matched controls(HCs).OCTA was used to assess superficial and deep retinal and conjunctival capillary plexuses.Subsequently,changes in MCD were analyzed using a circular segmentation method(C1-C6),a hemispheric quadrant segmentation method[superior right(SR),superior left(SL),inferior left(IL),and inferior right(IR)],and the early treatment diabetic retinopathy study(ETDRS)segmentation method(S,I,R,L).RESULTS:OCTA unequivocally demonstrated that the variations in CVD among HCs,T2DM,and GDM groups were statistically significant(P<0.001).In the superficial retinal capillary plexus(sRCP),significant differences were observed in the densities of total microvascular(TMI),microvasculature(MIR),and macrovascular(MAR)between patients with T2DM and HCs(P<0.05).Furthermore,the GDM group exhibited a more substantial reduction in MIR density compared to the T2DM group(P<0.01).In the deep retinal capillary plexus(dRCP),significant differences in the densities of TMI and MIR were identified between the T2DM group and HCs(P<0.05),with a notable difference in TMI density also observed between the GDM and T2DM groups(P<0.01).In the receiver operating characteristic(ROC)curve analysis,the area under the ROC curve(AUC)for TMI in sRCP between the T2DM group and HCs was 0.975,with a 95%confidence interval(CI)of 0.941–1.The AUC for MIR was highest in dRCP,with an AUC value of 0.914 and a 95%CI ranging from 0.847 to 0.981.In comparing the GDM and T2DM groups,the AUC for I region was maximized in sRCP,achieving a value of 0.978 with a 95%CI of 0.953–1.Additionally,the AUC for R region was maximized in dRCP,reaching a value of 0.99 with a 95%CI of 0.975 to 1.CONCLUSION:The sRCP and dRCP densities show higher diagnostic sensitivity for T2DM and GDM.OCTA holds potential as a significant instrument for the early diagnosis and differentiation of T2DM and GDM. 展开更多
关键词 diabetes optical coherence tomography angiography superficial retinal capillary plexus deep retinal capillary plexus retinal region segmentation method
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Development of a capillary bundle evaporation advanced mathematical modeling for 1,2-propylene glycol-glycerin mixtures in porous media 认领 引用 被引量：2
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作者 Bingbing Li Jiantong Li +3 位作者 Side Ren Shuo Gu Zhanjian Liu Liyan Liu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2025年第4期261-273,共13页
Porous liquid-conducting micro-heat exchangers have garnered considerable attention for their role in efficient heat dissipation in small electronic devices.This demand highlights the need for advanced mathematical mo... Porous liquid-conducting micro-heat exchangers have garnered considerable attention for their role in efficient heat dissipation in small electronic devices.This demand highlights the need for advanced mathematical models to optimize the selection of mixed heat exchange media and equipment design.A capillary bundle evaporation model for porous liquid-conducting media was developed based on the conjugate mass transfer evaporation rate prediction model of a single capillary tube,supplemented by mercury injection experimental data.Theoretical and experimental comparisons were conducted using 1,2-propanediol-glycerol(PG-VG)mixtures at molar ratios of 1:9,3:7,5:5,and 7:3 at 120,150,and 180℃.The Jouyban-Acree model was implemented to enhance the evaporation rate predictions.For the 7:3 PG-VG mixture at 180℃under the experimental conditions of the thermal medium,the model's error reduced from 16.75%to 10.84%post-correction.Overall,the mean relative error decreased from 11.76%to 5.98%after correction. 展开更多
关键词 Evaporation in porous media Capillary bundle model 1 2-propylene glycol-glycerin Evaporation rate
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Biomimetic inner helicoidal microfluidics with enhanced capillary rise for step liquid lifting mimicking transpiration 认领 引用 被引量：1
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作者 Zhaolong Wang Yinfeng Li +5 位作者 Ziheng Zhan Mingzhu Xie Yingying Li Chengqi Zhang Zhichao Dong Yong Shuai 《International Journal of Extreme Manufacturing》 SCIE EI CAS CSCD 2025年第2期737-747,共11页
Bionic microfluidics is garnering increasing attention due to the superior fluidic performance enabled by biomimetic microstructures.Inspired by the unique structures of young pumpkin stems,we fabricate helicoidally p... Bionic microfluidics is garnering increasing attention due to the superior fluidic performance enabled by biomimetic microstructures.Inspired by the unique structures of young pumpkin stems,we fabricate helicoidally patterned microchannels with precisely controlled morphologies using the projection micro-stereolithography(PμSL)-based 3D printing technique.Our helicoidally patterned microchannels achieve approximately twice the liquid lifting height compared to similarly sized smooth microchannels.This improvement is attributed to the enhanced capillary force.The additional meniscus formed between the helicoidally patterned microstructures significantly contributes to the increased capillary effects.Furthermore,the underlying mechanisms of fluidic performance in helicoidally patterned microchannels are theorized using a newly developed equation,which is also employed to optimize the geometric parameters and fluidic performance of the biomimetic helicoidal microchannels.Additionally,our biomimetic helicoidally patterned microchannels facilitate a significant step-lifting phenomenon,mimicking tall trees'transpiration.The fluidic performance of our biomimetic helicoidally patterned microchannels show promise for applications in enhanced liquid lifting,step-lifting,clean-water production,and others. 展开更多
关键词 biomimetic helicoidally patterned microchannel enhanced capillary rise step lifting mimicked transpiration
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Hydro-mechanical degradation of granitic saprolites due to capillary imbibition:Laboratory observations and implications for slope failure 认领 引用 被引量：1
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作者 Xianwei Zhang Xinyu Liu +2 位作者 Gang Wei Haodong Gao Zhu Liang 《Journal of Rock Mechanics and Geotechnical Engineering》 SCIE CSCD 2025年第5期3146-3160,共15页
Granite saprolite(GS)slope failure is a common yet catastrophic phenomenon in South China.Although the impact of subtropical climate,characterized by high temperatures and heavy rainfall,is widely recognized,the effec... Granite saprolite(GS)slope failure is a common yet catastrophic phenomenon in South China.Although the impact of subtropical climate,characterized by high temperatures and heavy rainfall,is widely recognized,the effect of the capillary imbibition and drying(CID)process,which frequently occurs during the dry season,on the hydro-mechanical properties of GS and slope stability is largely overlooked.This research examines natural GS specimens with various degrees of weathering subjected to CID cycles.The study investigates the capillary imbibition(CI)process and the evolution of the soil's hydromechanical properties across CID cycles.The results indicate that the CI process in GS is fundamentally different from that in clays and sands.The aggregated structure of GS comprising numerous fissures and large pores plays a critical role.In addition,the CID cycles cause the hydro-mechanical degradation of GS,including a finer particle composition,decreased shear strength,and increased permeability and disintegration potential,where damage to soil cementation and fissure development are identified as critical factors.This investigation reveals new insights into the mechanical properties of GS that are essential for the development of effective landslide management strategies in South China. 展开更多
关键词 Granite saprolite(GS) Slope failure capillary imbibition(CI) Microstructure Cementation Fissure
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Quantifying the crossover from capillary fingering to viscous fingering in heterogeneous porous media 认领 引用 被引量：1
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作者 Xin Yang Xingfu Li +7 位作者 Bo Kang Bin Xu Hehua Wang Xin Zhao Bo Zhang Kai Jiang Shitao Liu Yanbing Tang 《Energy Geoscience》 EI CAS CSCD 2025年第1期113-124,共12页
Studying immiscible fluid displacement patterns can provide a better understanding of displacement processes within heterogeneous porous media,thereby helping improving oil recovery and optimizing geological CO2 se... Studying immiscible fluid displacement patterns can provide a better understanding of displacement processes within heterogeneous porous media,thereby helping improving oil recovery and optimizing geological CO2 sequestration.As the injection rate of water displacing oil increases and the displacement pattern transits from capillary fingering to viscous fingering,there is a broad crossover zone between the two that can adversely affect the oil displacement efficiency.While previous studies have utilized phase diagrams to investigate the influence of the viscosity ratio and wettability of the crossover zone,fewer have studied the impact of rock heterogeneity.In this study,we created pore network models with varying degrees of heterogeneity to simulate water flooding at different injection rates.Our model quantifies capillary and viscous fingering characteristics while investigating porous media heterogeneity's role in the crossover zone.Analysis of simulation results reveals that a higher characteristic front flow rate within the crossover zone leads to earlier breakthrough and reduced displacement efficiency.Increased heterogeneity in the porous media raises injection-site pressure,lowers water saturation,and elevates the characteristic front flow rate,thereby expanding the extent of crossover zone. 展开更多
关键词 Immiscible displacement Heterogeneous porous media Capillary fingering Viscous fingering Pore network model
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Detection of multiple specific adventitious viruses in viral gene therapy products using multiplex PCR coupled with capillary electrophoresis 认领 引用
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作者 Guangyu Wang Lingli Xu +3 位作者 Lei Yu Xinchang Shi Xi Qin Yong Zhou 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2025年第1期284-286,共3页
Adventitious agents,comprising unintentionally introduced microorganisms in the production of biological products,pose a significant challenge in ensuring the safety of gene therapy products.The revised International ... Adventitious agents,comprising unintentionally introduced microorganisms in the production of biological products,pose a significant challenge in ensuring the safety of gene therapy products.The revised International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use(ICH)guildline Q5A(R2)from September 2022 highlights the inclusion of viral vector-based gene therapy products in safety discussions,emphasizing controls in material sourcing,testing,and viral clearance[1].Detecting adventitious virus contamination is complex due to the unique characteristics of gene therapy products and the limitations of routine testing methods.The US Food and Drug Administration(FDA)recommends incorporating routine and specific virus detection methods,including those outlined in various pharmacopeias.Existing control methods have limitations,prompting the need for highly sensitive and broad-spectrum detection approaches.Unlike traditional biological products,gene therapy products primarily consist of live viruses,necessitating methods that distinguish between the main virus and adventitious viruses.Current virus detection techniques,such as polymerase chain reaction(PCR),sequencing,mass spectrometry,and DNA microarrays[2e4],have their drawbacks. 展开更多
关键词 gene therapy products viral gene therapy adventitious viruses production biological productspose multiplex PCR capillary electrophoresis gene therapy productsthe adventitious agentscomprising
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Capillary electrophoresis as sample introduction system for highly sensitive and interference-free determination of 99Tc by ICP-MS 认领 引用 被引量：2
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作者 Dan Zhou Liangjin Bao +6 位作者 Haoqi Long Duo Zhou Yuwei Xu Bo Wang Chuanqin Xia Liang Xian Chengbin Zheng 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第4期398-402,共5页
Although inductively coupled plasma mass spectrometry(ICP-MS) retains high sensitivity and has been intensively used for the measurement of 99Tc, it usually suffers from tedious, expensive, and timeconsuming sample... Although inductively coupled plasma mass spectrometry(ICP-MS) retains high sensitivity and has been intensively used for the measurement of 99Tc, it usually suffers from tedious, expensive, and timeconsuming sample pretreatments due to the isobaric interferences from 99Ru and 98Mo1H. Herein, capillary electrophoresis(CE) was applied as sample introduction system for the sensitive, and interferencefree determination of 99TcO4- from RuO4-, and MoO42- by ICP-MS with a simple sample treatment. Compared to the conventional methods, the hyphenated CE-ICP-MS avoids the use of expensive separation resins and reduces the consumption of mineral acid, representing a simpler, more efficient and environmentally benign approach. Moreover, the proposed method exhibits higher accuracy compared with the mathematical correction method using the natural isotope ratio of 99Ru and 101Ru, and significantly reduces sample consumption and the amount of waste, thus remarkably alleviating the radioactive exposure to operators and the pressure of radioactive waste treatment. Under the optimized conditions, the detection limits of 25 μg/L and 0.06 μg/L were obtained for RuO4- and ReO4-(Tc was replaced by Re), respectively, with relative standard deviation(RSD) lower than 5%. In addition, efficient recoveries of RuO4-,ReO4-,and 99TcO4- from simulated Hanford site groundwater were achieved. The method is expected to be a promising candidate for sensitive and accurate analysis of 99Tc from contaminated environmental samples. 展开更多
关键词 Radionuclide technetium-99 Capillary electrophoresis-inductively coupled plasma mass spectrometry(CE-ICP-MS) Rhenium(Re) Interference-free determination
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Recent applications and chiral separation development based on stationary phases in open tubular capillary electrochromatography(2019–2022) 认领 引用 被引量：3
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作者 Xinyu Li Qianjie Ma +2 位作者 Xiangtai Zheng Qin Chen Xiaodong Sun 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2023年第4期323-339,共17页
Capillary electrochromatography(CEC)plays a significant role in chiral separation via the double separation principle,partition coefficient difference between the two phases,and electroosmotic flow-driven separation.G... Capillary electrochromatography(CEC)plays a significant role in chiral separation via the double separation principle,partition coefficient difference between the two phases,and electroosmotic flow-driven separation.Given the distinct properties of the inner wall stationary phase(SP),the separation ability of each SP differs from one another.Particularly,it provides large room for promising applications of open tubular capillary electrochromatography(OT-CEC).We divided the OT-CEC SPs developed over the past four years into six types:ionic liquids,nanoparticle materials,microporous materials,biomaterials,non-nanopolymers,and others,to mainly introduce their characteristics in chiral drug separation.There also added a few classic SPs that occurred within ten years as supplements to enrich the features of each SP.Additionally,we discuss their applications in metabolomics,food,cosmetics,environment,and biology as analytes in addition to chiral drugs.OT-CEC plays an increasingly significant role in chiral separation and may promote the development of capillary electrophoresis(CE)combined with other instruments in recent years,such as CE with mass spectrometry(CE/MS)and CE with ultraviolet light detector(CE/UV). 展开更多
关键词 Capillary electrochromatography Open tubular capillary Chiral separation Stationary phase Capillary electrophoresis with mass spectrometry(CE/MS)
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Construction of template-free amplification system coupled with capillary electrophoresis for the simultaneous detection of three tumor-associated DNA repair enzymes 认领 引用
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作者 Huige Zhang Wei Chen +5 位作者 Yuyan Huang Mingfang Wu Hongli Chen Cuiling Ren Xiaoyan Liu Haixia Zhang 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第9期575-580,共6页
DNA repair enzymes are important in the repair of DNA lesions for maintaining the genome stability,and their abnormal expression induced various human cancers.Simultaneous detection of these DNA enzymes could provide ... DNA repair enzymes are important in the repair of DNA lesions for maintaining the genome stability,and their abnormal expression induced various human cancers.Simultaneous detection of these DNA enzymes could provide convincing evidence based on the comparison of the activity of multiple enzymes than on that of single enzyme.Although fluorescence approach has been applied for the simultaneous detection both of DNA repair enzymes,the spectral overlap and multiwavelength excitation severely restrict the number of available fluorophores.Thus,it is difficult to simultaneously detect three enzymes in a single analysis by fluorescence detection.Herein,we developed a method for the simultaneous determination of three DNA repair enzymes including human flap DNA endonuclease 1(FEN1),human alkyladenine DNA glycosylase(hAAG)and uracil DNA glycosylase(UDG)based on the combination of template-free amplification system with capillary electrophoresis-laser induced fluorescence(CE-LIF)detection.The amplification system was adopted to transfer and amplify the enzymatic products into different length DNA fragments which could be separated effectively by CE-LIF without the complicated modification of the capillary inner wall or labeling different tails on signal probes for separation.The method demonstrated a detection limit of 0.07 U/mL(0.08-160 U/mL)for FEN1,2.40 U/mL(2.5-250U/mL)for hAAG and 2.1×10-4U/mL(0.0004-2.5 U/mL)for UDG,the relative standard deviations(RSDs)of peak time and peak area for different analytes were as follows:2.50%-4,37%and 3.24%-7.18%(inter-day);1.37%-2.71%and 1.43%-3.02%(intra-day),4.28%-6.08%and 4.16%-7.57%(column to column),respectively.And it can identify the inhibitor-like drugs,evaluate enzymatic kinetics and achieve the detection of three enzymes in cell extracts,providing a simple and powerful platform for simultaneous detection of more DNA repair enzymes. 展开更多
关键词 Simultaneous detection Template-free amplification DNA repair enzymes Capillary electrophoresis
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Profile studies of lithium vapor under high-density plasma irradiation using embedded multichannel capillary porous structure 认领 引用
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作者 Rendeng TANG Jianxing LIU +6 位作者 Hengxin GUO Congcong YUAN Xiaoxuan HUANG Zhengdong LI Zongbiao YE Jianjun WEI Fujun GOU 《Plasma Science and Technology》 SCIE EI CSCD 2025年第5期140-149,共10页
Faced with complex operational environments,liquid metal divertors are considered alternative solutions to traditional solid divertors.Experiments have been conducted using a self-designed embedded multichannel capill... Faced with complex operational environments,liquid metal divertors are considered alternative solutions to traditional solid divertors.Experiments have been conducted using a self-designed embedded multichannel capillary porous structure(EM-CPS)for plasma irradiation of lithium(Li)-prefilled EM-CPS in the high-density linear plasma device(SCU-PSI).The optical image analysis of the interaction region between the plasma and Li vapor shows that the region is not a regular geometric shape and the point of strongest light emission appears 1–2 cm in front of the target rather than on its surface.The irregularity is due to the uneven distribution and density of the Li vapor,as well as the radial and axial attenuation of the plasma.As the plasma discharge parameters increase,the vapor profile initially expands globally and then contracts locally,with the point of the strongest light emission gradually moving towards the target surface.The spectral lines of Li 670.78 nm and Ar 763.51 nm in the interaction region are produced by deexcitation.These lines gradually decrease in intensity along the axial direction,which is close to the trend of light emission intensity that initially increases and then decreases along the same direction.These findings provide a reference for studying the interaction mechanism between plasma and liquid Li capillary porous structures in linear plasma devices and future tokamak. 展开更多
关键词 liquid Li vapor shielding plasma capillary porous structure
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