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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1749-1755页

作者： bi-Zhi Cen Yin-Song Chen Li-Ping Li jing-wen Wu Yan-Fen Xie Department of Tumor Center Foshan Hospital of Traditional Chinese MedicineFoshan 528000Guangdong ProvinceChina

BACKGROUND Intestinal colic is a common complication in patients who have undergone radical surgery for colorectal *** Chinese medicine has advantages,including safety and stability,for the treatment of intestinal *** irra-diation for abdominal ironing has been applied in the treatment of many gas-trointestinal *** gromwell oil has the effects of clearing heat,cooling blood,reducing swelling,and relieving *** The general effective rate in the observation group was 95.00%,which was significantly higher than that in the control group(86.67%,P0.05).After 1,2,3,and 4 d of treatment,the duration of symptoms in both groups were decreased,and the duration in the observation group was significantly lower than that in the control group(96.54±9.57 vs 110.45±11.23,87.26±12.07 vs 104.44±11.68,80.45±16.21 vs 99.44±14.95,73.18±15.58 vs 92.17±14.20;P0.05).CONCLUSION The use of lamp irradiation combined with purple gromwell oil gauze in patients with intestinal colic after radical surgery for colorectal cancer can reduce symptom duration,alleviate intestinal colic,and improve treatment efficacy,and this approach is *** is worth promoting the use of this treatment in clinical practice.

关键词： Lamp irradiation Purple gromwell oil gauze Intestinal colic Radical surgery for colorectal cancer Therapeutic effect

Correlation of serum albumin level on postoperative day 2 with hospital length of stay in patients undergoing emergency surgery for perforated peptic ulcer

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World Journal of Gastrointestinal Surgery 2023年第7期15卷 1434-1441页

作者： Dan Xie Ping-Lan Lu wen Xu jing-Ya You Xiao-Gang bi Ying Xian Department of General Intensive Care Unit Lingnan HospitalThe Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510530Guangdong ProvinceChina Department of Surgical Intensive Care Unit The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510000Guangdong ProvinceChina

BACKGROUND Perforated peptic ulcer(PPU)is a common emergency surgical condition and a significant cause of morbidity and mortality *** advances in surgical techniques have improved outcomes for patients with PPU,many factors still affect postoperative hospital stay and overall *** potential factor is the serum albumin(SA)level,a widely utilized marker of nutritional status that has been associated with length of stay and complications in various surgical *** To clarify the correlation of SA level on postoperative day 2 with hospital length of stay(HLOS)in patients undergoing emergency surgery for perforated peptic ulcer(PPU).METHODS We retrospectively collected and analyzed clinical baseline data,including blood routine and SA levels,of patients who underwent emergency PPU surgery and postoperative treatment at the Lingnan Hospital,the Third Affiliated Hospital of Sun Yat-sen University between December 2012 and September *** were grouped according to HLOS with 7 d as the cut-off value,and relevant indicators were analyzed using SPSS *** Of the 37 patients undergoing emergency surgery for PPU referred to our department,33 had gastric and 4 had duodenal ulcer *** median HLOS was 10 *** were 8 patients in the≤7-d group(median HLOS:7 d)and 29 patients in the>7-d group(median HLOS:10 d).The≤7-d group had markedly higher SA on postoperative day 2 than the>7-d group(37.7 g/L vs 32.6g/L;P7 d(Odds ratio=0.629,P=0.015).The cut-off of SA on postoperative day 2 was 30.6g/L,with an area under the curve of 0.86 and a negative predictive value of 100%for the prediction of HLOS≤7 *** The SA level on postoperative day 2 was associated with the HLOS in patients undergoing emergency surgery for *** pre-and post-operative albumin levels should be monitored,and infusion of human SA should be considered in a timely man

关键词： Perforated peptic ulcer Emergency surgery Serum albumin Hospital length of stay

Microstructure evolution characterization of Ni-based GH4720Li superalloy during strain-controlled fatigue at 550℃

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Journal of Iron and Steel Research International 2021年第7期28卷 901-909页

作者： Xing-fei Xie jing-long Qu Jin-hui Du Zhong-nan bi Gaona Aero Material Co. Ltd.Beijing 100081China High Temperature Materials Research Institute Central Iron and Steel Research InstituteBeijing 100081China

High-temperature fatigue property of Ni-based GH4720Li superalloy at 550℃has been investigated at maximum strain from 0.8%to 1.1%.Microstructural characterization and oxidation behavior of superalloy during high-temperature fatigue have been analyzed by transmission electron microscopy and scanning transmission electron *** results show that a stable response following a slight cyclic hardening during initial cycles was revealed at the maximum strain from 0.8%to 1.0%.The stable response decreased with an increase in maximum *** cyclic hardening was observed at the maximum strain of 1.1%.There is difference in dislocation substructures between primary γ'precipitates and γ *** cell and mechanical twin were formed in the interior of primary γ'precipitates and γ *** primary γ'precipitate interface would migrate toward the interior of primary γ'precipitates along twin boundaries,leading to instability of primary γ'*** secondary γ'depleted zone was distinctly generated near the surface due to the decomposi-tion of secondary γ'*** crack initiation and propagation during high-temperature fatigue were found inside the secondary γ'depleted *** primary γ'precipitates could effectively hinder the crack ***-rich oxide films(Al_(2)O_(3))were initially produced at crack tips,because the rate of diffusion of Al was relatively higher than that of other elements at crack tips.

关键词： Ni-based superalloy High-temperature fatigue Transmission electron microscopy Scanning transmission electron microscopy Fatigue crack tip Oxide

Interfacial Oxygen Octahedral Coupling-Driven Robust Ferroelectricity in Epitaxial Na_(0.5)bi_(0.5)TiO_(3)Thin Films

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Research 2024年第2期2023卷 149-157页

作者： Haojie Han Qinghua Zhang Wei Li Yiqun Liu Jiasheng Guo Yue Wang Qian Li Lin Gu Ce-wen Nan jing Ma State Key Laboratory of New Ceramics and Fine Processing Schoolof Materials Science and EngineeringTsinghua UniversityBeijing 100084China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China

The oxygen octahedral rotation(OOR)forms fundamental atomic distortions and symmetries in perovskite oxides and definitely determines their properties and ***,epitaxial strain and interfacial structural coupling engineering have been developed to modulate the OOR patterns and explore novel properties,but it is difficult to distinguish the 2 ***,different symmetries are induced in Na_(0.5)bi_(0.5)TiO_(3)(NBT)epitaxial films by interfacial oxygen octahedral coupling rather than epitaxial *** NBT film grown on the Nb:SrTiO_(3)substrate exhibits a paraelectric tetragonal phase,while with La_(0.5)Sr_(0.5)MnO_(3)as a buffer layer,a monoclinic phase and robust ferroelectricity are obtained,with a remanent polarization of 42μC cm^(-2)and a breakdown strength of 7.89 MV cm^(-1),which are the highest record among NBT-based ***,the interfacial oxygen octahedral coupling effect is demonstrated to propagate to the entire thickness of the film,suggesting an intriguing long-range *** work provides a deep insight into understanding the structure modulation in perovskite heterostructures and an important avenue for achieving unique functionalities.

关键词： effect. interfacial coupling

Preparation and Luminescence Behavior of CaSiO_3∶Eu^(3+)(bi^(3+))

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Chemical Research in Chinese Universities 2006年第6期22卷 671-674页

作者： YANG jing-hai LIU wen-yan YANG Li-li ZHANG Yong-jun WANG Ya-xin FAN Hou-gang Institute of Condensed State Physics Jilin Normal University Siping 136000 P. R. China Department of Mathematics and Physics Jilin Institute of Chemical Technology Jilin 132022 P. R. China Key Laboratory of Excited State Processes Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P. R. China

CaSiO3：Eu0.08^3＋bi0.002^3＋ with a monoclinic perovskite structure was synthesized by using sol-gel method, and its luminescence characteristics were investigated. From the excitation spectrum, it can be seen that the main peaks located at 238,396,415,437 and 359 nm correspond to the charge-transfer band of Eu^3＋-O^2- , the absorption transitions of ^7F0.1→^3L6, ^7F0→^5D3, ^7F1→^5D3 of Eu^3＋ ions, and ^3P1→^1S0 of bi^3＋ ions, respectively. When the samples were excited with a light of wavelength 359 or 395 nm, it can be seen from the emission spectrum that the electronic dipole transition located at 609 nm corresponding to ^5D0→^7F2 of Eu^3＋ ions was stronger than the magnetic dipole transition located at 587 nm corresponding to ^5D0→^7F1 of Eu^3＋ ions, which shows that more Eu^3＋ ions were located in nonreversion center lattices. The energy transfer from bi^3＋ ions to Eu^3＋ ions in the phosphor was also discussed. The results show that Eu^3＋ ions could be well sensitized by ^3＋ions, and the energy-transfer pattern between bi^3＋ ions and Eu^3＋ ions was resonance energy transfer.

关键词： CaSiO3 Luminescence characteristic Sensitization Sol-gel method

Self-adaptive Bat Algorithm With Genetic Operations

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IEEE/CAA Journal of Automatica Sinica 2022年第7期9卷 1284-1294页

作者： jing bi Haitao Yuan Jiahui Zhai MengChu Zhou H.Vincent Poor School of Software Engineering Faculty of Information TechnologyBeijing University of TechnologyBeijing 100124China Department of Electrical and Computer Engineering New Jersey Institute of TechnologyNewark NJ 07102 USA School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Department of Electrical Engineering Princeton UniversityPrinceton NJ 08544 USA IEEE

Swarm intelligence in a bat algorithm(BA)provides social *** operations for reproducing individuals in a genetic algorithm(GA)offer global search ability in solving complex optimization *** integration provides an opportunity for improved search ***,existing studies adopt only one genetic operation of GA,or design hybrid algorithms that divide the overall population into multiple subpopulations that evolve in parallel with limited interactions *** from them,this work proposes an improved self-adaptive bat algorithm with genetic operations(SBAGO)where GA and BA are combined in a highly integrated ***,SBAGO performs their genetic operations of GA on previous search information of BA solutions to produce new exemplars that are of high-diversity and *** by these exemplars,SBAGO improves both BA’s efficiency and global search *** evaluate this approach by using 29 widely-adopted problems from four test *** is also evaluated by a real-life optimization problem in mobile edge computing *** results show that SBAGO outperforms its widely-used and recently proposed peers in terms of effectiveness,search accuracy,local optima avoidance,and robustness.

关键词： Bat algorithm(BA) genetic algorithm(GA) hybrid algorithm learning mechanism meta-heuristic optimization algorithms

Comparison of Adsorption Isotherms of Methylxanthines on C_(18) Column

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Chemical Research in Chinese Universities 2010年第5期26卷 729-734页

作者： bi wen-tao CHOI Dae Ki ROW Kyung Ho Department of Chemical Engineering Inha University lncheon 402-751 Korea Center for Fuel Cell Research Korea Institute of Science and Technology Seoul 136-791 Korea

A comparison of the adsorption isotherms of caffeine, theophylline and theobromine and the competitive adsorption of the three compounds on a C18 column were investigated. The experimental parameters of the equilibrium isotherms were estimated by linear and nonlinear regression analyses. The linear equation as a function of the adsorption concentration of the single compound in its solution and the competitive adsorption of a single compound in a mixed solution were then determined. The adsorption equilibrium data were then correlated to the linear, Langmuir, Freundlich, Langmuir-Freundlich and stoichiometric displacement theory for adsorption（SDT-A） isotherm models. The mixed compounds of the three compounds were competitively adsorbed on the C18 particles. The expression of stoichiometric displacement theory for adsorption was found to be more suitable for adsorption of methylxanthines on a C18 column.

关键词： Adsorption isotherm Methylxanthine High-performance liquid chromatography

Study on damage-stress loss coupling model of rock and prestressed anchor cable in dry-wet environment

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International Journal of Mining Science and Technology 2023年第12期33卷 1451-1467页

作者： Yu Zhao Huasu Wang jing bi Zhijun Wu Chaolin Wang Jiabao Ma College of Civil Engineering Guizhou UniversityGuiyang 550025China School of Civil Engineering Wuhan UniversityWuhan 430072China

The loss of anchoring force is one of the problems to be solved *** anchorage loss is a key factor causing the failure of anchoring engineering,so it is crucial to study the time-dependent variation of anchoring *** dry and wet(D-W)conditions have a significant effect on deformation of *** anchoring system is composed of anchoring components and rock mass,and thus rock deformation has a significant impact on the loss of anchoring *** rock deformation under the effects of D-W cycles is a prerequisite to understanding the factors that influence loss of anchoring force in anchor *** this study,we designed an anchoring device that enabled real-time monitoring of the variation in strain during D-W periods and rock *** magnetic resonance(NMR)measurements showed that under D-W conditions,the increment in porosity was smaller for prestressed rock than unstressed *** trends of prestress loss and strain variation are consistent,which can be divided into three characteristic intervals:rapid attenuation stage,slow attenuation stage and relatively stable *** the same stress level,the rate of stress loss and strain for the soaking specimen was the highest,while that of the dried specimen was the *** the same D-W cycling conditions,the greater the prestress,the smaller the strain loss rate of the rock,especially under soaking *** characteristics of pore structure and physical mechanical parameters indicated that prestress could effectively suppress damage caused by erosion related to D-W *** study reveals the fluctuation behavior of rock strain and prestress loss under D-W conditions,providing a reference for effectively controlling anchoring loss and ideas for inventing new anchoring components.

关键词： D-W cycles Anchoring force loss Coupled model Pore structure Prestressed device

MHD simulations of inward shocks in Cassiopeia A

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Research in Astronomy and Astrophysics 2020年第4期20卷 39-43页

作者： Chu-Yuan Yang bi-wen Bao Si-Ming Liu Yunnan Observatories Chinese Academy of SciencesKunming 650216China Key Laboratory for the Structure and Evolution of Celestial Objects Chinese Academy of SciencesKunming 650216China Center for Astronomical Mega-Science Chinese Academy of SciencesBeijing 100101China Department of Astronomy Key Laboratory of Astroparticle Physics of Yunnan ProvinceYunnan UniversityKunming 650091China Key Laboratory of Dark Matter and Space Astronomy Purple Mountain ObservatoryChinese Academy of SciencesNanjing 210033China

Cassiopeia A,the brightest radio supernova remnant(SNR)in the sky,has several unique characteristics in comparison to its *** its radio brightness and prominent soft-concave radio spectrum,itsγ-ray spectrum appears to have a low-energy cutoff near 2 GeV,and it is the only SNR with prominent hard X-ray *** the unusual radio properties may be attributed to strong emission from reverse shocks,the hard X-ray emission has been associated with high-speed inward shocks induced by high density ***,the low-energyγ-ray spectral cutoff could be attributed to slow penetration of lower energy particles accelerated near the inward shocks into high-density emission *** this paper,we carry out magneto-hydrodynamic(MHD)simulations of shocks in Cassiopeia A and demonstrate that its inward shock structure can indeed be reproduced via shock interactions with clumps of gases with a density of 20 cm-3.

关键词： acceleration of particles supernovae:individual(Cassiopeia A) ISM:supernova remnants X-rays:ISM

Time analysis for aero-engine acoustic modes exploiting block sparsity

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Chinese Journal of Aeronautics 2024年第11期37卷 254-264页

作者： Zepeng LI Baijie QIAO bi wen Yuanshi LIU Xuefeng CHEN Andreas JAKOBSSON School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China AECC Sichuan Gas Turbine Establishment Mianyang 621022China Department of Mathematical Statistics Lund UniversityLund 22100Sweden

Acoustic Mode Analysis(AMA)for aero-engines can offer valuable insights for the design of silent engines as well as for fault ***,this is done in the(spatial)Fourier domain,necessitating the use of multiple uniformly spaced microphones to ensure adequate *** works show that sub-Nyquist estimation is feasible using sparse reconstruction frameworks,although such modelling generally introduces an estimation bias that has to be compensated ***,there is a growing interest in monitoring mode amplitude over continuous time,as it can offer crucial insights for diagnosing operational *** this work,we introduce a Block Orthogonal Matching Pursuit(BOMP)method for continuous time mode analysis,exploiting the underlying structural sparsity of the signal ***,the(pseudo)‘0ànorm penalty is employed to induce sparsity in the wavenumber domain,whereas a block structure is imposed as a constraint to monitor the amplitude variation in the time *** effectiveness of the BOMP is evaluated using both numerical simulations and experimental measurements,indicating the proposed method's preferable performance as compared to the classic Least Absolute Shrinkage and Selection Operator(LASSO)and Orthogonal Matching Pursuit(OMP)methods.

关键词： Block sparsity Orthogonal matching pursuit Acoustic mode analysis Acoustic testing Sparse estimate