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boundary scheme for lattice boltzmann modeling of micro-scale gas flow in organic-rich pores considering surface diffusion

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Chinese Physics B 2019年第3期28卷 84-96页

作者： Hong Zuo Shou-Chun Deng hai-bo li State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China

We propose a boundary scheme for addressing multi-mechanism flow in a porous medium in slip and early transition flow regimes, which is frequently encountered in shale gas reservoirs. Micro-gaseous flow in organic-rich shale involves a complex flow mechanism. A self-developed boundary scheme that combines the non-equilibrium extrapolation scheme and the combined diffusive reflection and bounce-back scheme(half-way DBB) to embed the Langmuir slip boundary into the single-relaxation-time lattice boltzmann method(SRT-LBM) enables us to describe this process, namely, the coupling effect of micro-gaseous flow and surface diffusion in organic-rich nanoscale pores. The present LBM model comes with the careful consideration of the local Knudsen number, local pressure gradient, viscosity correction model, and regularization procedure to account for the rarefied gas flows in irregular pores. Its validity and accuracy are verified by several benchmarking cases, and the calculated results by this boundary scheme accord well with our analytical *** boundary scheme shows a higher accuracy than the existing studies. Additionally, a subiteration strategy is presented to tackle the coupled micro-gaseous flow and surface diffusion, which necessitates the iteration process matching of these two mechanisms. The multi-mechanism flow in the self-developed irregular pores is also numerically investigated and analyzed over a wide range of parameters. The results indicate that the present model can effectively capture the coupling effect of micro-gaseous flow and surface diffusion in a tree-like porous medium.

关键词： lattice boltzmann method(LBM) surface diffusion Langmuir slip model boundary scheme

Study on superprism effect in the multilayer optical thin film stack

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光学精密工程 2005年第4期13卷 454-458页

作者： SUN Xue-zheng GU Pei-fu CHEN hai-xing JIN bo li hai-feng liU Xu State Key Laboratory of Modern Optical Instrumentations Zhejiang University Hangzhou 310027 China

Researches show that multilayer optical thin film stack can exhibit superprism effect due to their large abnormal dispersions. We investigated and simulated this effect numerically in a 1-D non-periodic film structure-Fabry-Perot filters (FPF), which possess drastic change in phase and large group delay around wavelength of peak transmittance, and fabricated this device to realize remarkable superprism effect. We tested experimentally with the maximum spatial separation shift up to 65 μm, and the experimental result is in good agreement with the theory. Compared with the traditional prism, the total thickness of our structure is only 3.3 μm, and our prism shows a stronger angular resolution of 1.8°/nm.

关键词：薄膜涂覆技术多层膜 FPF

Application of subsurface wastewater infiltration system to on-site treatment of domestic sewage under high hydraulic loading rate

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Water Science and Engineering 2015年第1期8卷 49-54页

作者： Ying-hua li hai-bo li Xin-yang Xu Xuan Gong Yong-chun Zhou School of Resources and Civil Engineering Northeastern University

In order to enhance the hydraulic loading rate （HLR） of a subsurface wastewater infiltration system （SWIS） used in treating domestic sewage, the intermittent operation mode was employed in the SWIS. The results show that the intermittent operation mode contributes to the improvement of the HLR and the pollutant removal rate. When the wetting-drying ratio （RwD） was 1.0, the pollutant removal rate increased by （13.6 ± 0.3）% for NH3-N, （20.7 ± 1.1）% for TN, （18.6± 0.4）% for TP, （12.2 ± 0.5）% for boD, （10.1 ± 0.3）% for COD, and （36.2 ± 1.2）% for SS, compared with pollutant removal rates under the continuous operation mode. The pollutant removal rate declined with the increase of the HLR. The effluent quality met The Reuse of Urban Recycling Water - Water Quality Standard for Scenic Environment Use （GB/T 18921-2002） even when the HLR was as high as 10 cm/d. Hydraulic conductivity, oxidation reduction potential （ORP）, the quantity of nitrifying bacteria, and the pollutant removal rate of NH3-N increased with the decrease of the RWD. For the pollutant removal rates of TP, boD, and COD, there were no significant difference （p 〈 0.05） under different RwDS. The suggested RWD was 1.0. Relative contribution of the pretreatment and SWlS to the pollutant removal was examined, and more than 80% removal of NH3-N, TN, TP, COD, and boD occurred in the SWIS.

关键词： Domestic sewage Subsurface wastewater infiltration system Intermittent operation mode Hydraulic loading rate Pollutant removal rate

Fabrication of nano-grained negative temperature coefficient thermistors with high electrical stability

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Rare Metals 2021年第4期40卷 1014-1019页

作者： Miao-Miao Cui Xiao Zhang Kuan-Guan liu hai-bo li Mang-Mang Gao Sen liang Ningxia Key Laboratory of Photovoltaic Materials Ningxia UniversityYinchuan 750021China School of Materials Science and Engineering North Minzu UniversityYinchuan 750021China

Dense nano-grained Ni_(0.7)Mn_(2.3O4) negative temperature coefficient(NTC) thermistors were fabricated by a novel two-step sintering approach that combines rapid sintering and principle of conventional two-step sintering *** were sintered at 1042℃ for 30 s in the first rapid step and then at 850-950℃ for 20 h in the second soaking *** phase,microstructure and electrical properties of sintered samples were studied by X-ray diffraction(XRD),scanning electron microscopy(SEM),resistance temperature relationship and aging *** samples show a single-phase cubic spinel structure and indicate a high relative density ranging from 84% to 91% of the theoretical ***,average grain sizes of sintered samples under SEM are distributed between 254 and 570 ***,the resistivity and the aging coefficient significantly decrease when soaking sintering temperature *** addition,the obtained material constant(B) ranges from 3931 to 3981 ***_(0.7)Mn_(2.3)O_(4)-3(soaking at 900℃) and Ni_(0.7)Mn_(2.3O4)-4(soaking at 950℃) present little aging behavior,implying great electrical stability.

关键词： Negative temperature coefficient thermistor Sintering Nano-grain Aging

Study of the standard model with weak decays of charmed hadrons at BESⅢ

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National Science Review 2021年第11期8卷 39-53页

作者： hai-bo li Xiao-Rui Lyu Institute of High Energy Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

A comprehensive review of weak decays of charmed hadrons(D0/+,Ds~+ and Λc~+) based on analyses of the threshold data from e~+e~-annihilation in the BESⅢ experiment is *** experimental challenges and successes in understanding decays of the charmed hadrons are *** calibrations of quantum chromodynamics and tests of the standard model are provided by measurements of purely leptonic and semi-leptonic decays of charmed hadrons,and lepton universality is probed in purely leptonic decays of charmed mesons to three generations of *** correlations in threshold data samples provide access to strong phases in the neutral D meson decays and probe the decay dynamics of the charmed Λ*** physics studies with near-threshold production of charmed particle pairs are unique to BESⅢ,and provide many important opportunities and challenges.

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Successful treatment of stage ⅢB intrahepatic cholangiocarcinoma using neoadjuvant therapy with the PD-1 inhibitor camrelizumab:A case report

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World Journal of Clinical Cases 2022年第27期10卷 9743-9749页

作者： Shu-Guang Zhu hai-bo li Tian-Xing Dai Hua li Guo-Ying Wang Department of Hepatic Surgery and liver Transplantation The Third Affiliated Hospital of Sun Yat-Sen UniversityGuangzhou 510630Guangdong ProvinceChina Department of Hepatobiliary Surgery the First Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510220Guangdong ProvinceChina

BACKGROUND The prognosis of intrahepatic cholangiocarcinoma(ICC) with lymph node metastasis is *** feasibility of surgery is not certain,which is a contraindication according to the National Comprehensive Cancer Network *** role of immunotherapy as a neoadjuvant therapy for ICC is not *** herein describe a case of ICC with lymph node metastasis that was successfully treated with neoadjuvant *** SUMMARY A 60-year-old man with a liver tumor was admitted to our *** computed tomography and magnetic resonance imaging revealed a spaceoccupying lesion in the right lobe of the *** subfoci were found around the tumor,and the right posterior branch of the portal vein was *** biopsy indicated poorly differentiated *** to the American Joint Committee on Cancer disease stage classification,ICC with hilar lymph node metastasis(stage ⅢB) and para-aortic lymph node metastasis was suspected.A report showed that two patients with stage ⅢB ICC achieved a complete response(CR) 13 mo and 16 mo after chemotherapy with a PD-1 monoclonal *** multidisciplinary consultation,the patient was given neoadjuvant therapy,surgical resection and lymph node dissection,and postoperative adjuvant *** three rounds of PD-1 immunotherapy(camrelizumab) and two rounds of gemcitabine combined with cisplatin regimen chemotherapy,the tumor size was ***,a partial response was *** laparotomy found that the lymph nodes of Group 16 were negative,and the tumor could be surgically ***,the patient underwent right hemihepatectomy plus lymph node *** patient received six rounds of chemotherapy and five rounds of PD-1 treatment *** 8 mo of follow-up,no recurrence was found,and a CR was *** Neoadjuvant therapy combined with surgical resection is useful for advanced-stage *** is the first report of successful treatment of s

关键词： Intrahepatic cholangiocarcinoma Lymph node metastasis Neoadjuvant therapy Immunotherapy Chemotherapy Surgical resection Case report

Development of CO_(2) capture and utilization technology in steelmaking plant

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Journal of Iron and Steel Research International 2023年第11期30卷 2210-2218页

作者： Wen-liang Dong Guo-hui Ding An-jun Xu Ning Hao Chen-xi Ji li-peng Ji hai-bo li Rong Zhu School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Research Institute of Technology Shougang Group Co.Ltd.Beijing100043China Steelmaking Department Shougang Jingtang United Iron and Steel Co.Ltd.Tangshan063200HebeiChina

The performance of a recycling process for CO_(2) capture and utilization of exhaust gas in the steelmaking plant was reported.A facility capable of capturing CO_(2) at 3200 m^(3)/h was established in the steelmaking plant,resulting in the CO_(2) production of 50,000 t/*** CO_(2) concentration of the exhaust gas from the lime kiln increased from 25.0 to 99.8 vol.%using the comprehensive method of the pressure swing adsorption and cryogenic *** captured and purified CO_(2) was successfully applied in the converter process by the top blowing and bottom *** utilization of CO_(2) was 3.5 m^(3)/t through these two *** optimizing parameters of CO_(2)-O_(2) mixed top blowing,the value of[C]×[O]and the content of TFe in slag were reduced by 1.33×10-4 and 1.27%,respectively,and the dephosphorization rate of the molten steel increased by 2.31%.For the CO_(2) bottom blowing,the[N]content in the molten steel was significantly reduced by 5.7×10^(-6).

关键词： lime kiln exhaust gas CO_(2)capture CO_(2)utilization CO_(2)-O_(2)mixed top blowing CO_(2)bottom blowing Converter

Controlled synthesis of ultrasmall RuP_(2) particles on N,P-codoped carbon as superior pH-wide electrocatalyst for hydrogen evolution

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Rare Metals 2021年第5期40卷 1040-1047页

作者： Ying-Hua Wang Rui-Qing li hai-bo li Hong-li Huang Zeng-Jing Guo Hong-Yan Chen Yao Zheng Kong-Gang Qu School of Chemistry and Chemical Engineering Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage and Novel Cell TechnologyLiaocheng UniversityLiaocheng 252059China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Electrocatalytic hydrogen evolution reaction(HER)is a highly potential strategy to massively produce green hydrogen ***,the employment of costly Pt-based electrocatalyst in the cathode of electrolyzer greatly hampers the development of hydrogen *** phosphide catalysts have recently drawn wide attention due to the Pt-like activity but relatively lower ***,a facile strategy was proposed for the controlled preparation of the ultrasmall RuP_(2) nanoparticles on N,P-codoped carbon from common precursors of Ru(Ⅱ)complex and phytic *** taking advantage of simple mixing and pyrolysis,the as-synthesized RuP_(2) nanoparticles were uniformly embedded onto the N,P-codoped carbon *** composite catalyst shows better activity than Pt/C for alkaline HER and comparable activity for acidic and neutral *** superior activity can be ascribed to the ultrasmall-size and efficient RuP_(2) together with good mass and charge transfer ability assured by N,P-codoped carbon *** advantages including low-cost and simple synthesis in this work present an encouraging substitute to replace commercial Pt/C for hydrogen-related practical applications.

关键词： RuP_(2) N P-codoped carbon Hydrogen evolution Electrocatalyst

Removal of intraocular foreign body in anterior chamber angle with prism contact lens and 23-gauge foreign body forceps

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International Journal of Ophthalmology(English edition) 2017年第5期10卷 749-753页

作者： Yan-Ming Huang Hua Yan Jin-Hong Cai hai-bo li Department of Ophthalmology Tianjin Medical University General Hospital Tianjin Neurological Institue Key Laboratory of Post-neuroinjury Neuro-repair and Regeneration in Central Nervous System Ministry of Education and Tianjin City Department of Ophthalmology Xiamen Eye Center Affiliated to Xiamen University

AIM：To introduce a novel approach in removal of anterior chamber angle foreign body（ACFB） using a prism contact lens and 23-gauge foreign body ***：Data of 42 eyes of 42 patients who had undergone removal of ACFB using a prism contact lens and 23-gauge foreign body forceps from January 2008 to October 2013 were collected and analyzed. Twenty eyes in group A received the conventional approach by using toothed forceps through corneal limbus incision, and 22 eyes in group B underwent the novel method through the opposite corneal limbus incision. RESULTS：The success rate of ACFB once removal was 75%（15/20） in group A, and 100%（22/22） in group B. The average operation time of group A was significantly longer compared with group B（34.9±9.88 min vs 22.13±8.85min; P〈0.05）. The average size of corneal limbus incision in group A was significantly larger than that of group B（4.85±1.89 mm vs 3.95±1.17 mm; P〈0.05）. The corneal limbus incision suturing were conducted in all eyes in group A, and only 5 eyes in group B. CONCLUSION：Removal of ACFB using a prism contact lens and 23-gauge foreign body forceps is a safer, more effective, and convenient technique compared with the conventional approach.

关键词： prism contact lens intraocular foreign body anterior chamber angle 23-gauge foreign body forceps