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World Journal of Gastrointestinal Surgery 2024年第5期16卷 1301-1310页

作者： Wei Zhang Ya-Ni Jin Chang Sun Xiao-Feng Zhang rui-qi li qin Yin Jin-Jun Chen Yu-Zheng Zhuge Department of Gastroenterology Nanjing Drum Tower HospitalThe Affiliated Hospital of Medical SchoolNanjing UniversityNanjing 210000Jiangsu ProvinceChina Hepatology Unit Department of Infectious DiseasesNanfang HospitalSouthern Medical UniversityGuangzhou 510000Guangdong ProvinceChina Co-first authors:Wei Zhang and Ya-Ni Jin

BACKGROUND Transjugular intrahepatic portosystemic shunt(TIPS)is a cause of acute-onchronic liver failure(ACLF).AIM To investigate the risk factors of ACLF within 1 year after TIPS in patients with cirrhosis and construct a prediction *** In total,379 patients with decompensated cirrhosis treated with TIPS at Nanjing Drum Tower Hospital from 2017 to 2020 were selected as the training cohort,and 123 patients from Nanfang Hospital were included in the external validation *** and multivariate logistic regression analyses were performed to identify independent *** prediction model was established based on the Akaike information *** and external validation were conducted to assess the performance of the *** Age and total bilirubin(TBil)were independent risk factors for the incidence of ACLF within 1 year after *** developed a prediction model comprising age,TBil,and serum sodium,which demonstrated good discrimination and calibration in both the training cohort and the external validation *** Age and TBil are independent risk factors for the incidence of ACLF within 1 year after TIPS in patients with decompensated *** model showed satisfying predictive value.

关键词： Acute-on-chronic liver failure Transjugular intrahepatic portosystemic shunt Influencing factor analysis Risk prediction model Nomogram

The Christoffel problem by the fundamental solution of the Laplace equation

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Science China Mathematics 2021年第7期64卷 1599-1612页

作者： qi-rui li Dongrui Wan Xu-Jia Wang School of Mathematical Sciences Zhejiang UniversityHangzhou 310027China Centre for Mathematics and Its Applications The Australian National UniversityCanberraACT 2601Australia College of Mathematics and Statistics Shenzhen UniversityShenzhen 518060China

The Christoffel problem is equivalent to the existence of convex solutions to the Laplace equation on the unit sphere S^(n).Necessary and sufficient conditions have been found by Firey(1967)and Berg(1969),by using the Green function of the Laplacian on the *** the Christoffel problem as the Laplace equation on the entire space R^(n+1),we observe that the second derivatives of the solution can be given by the fundamental solutions of the Laplace *** we find new and simpler necessary and sufficient conditions for the solvability of the Christoffel *** also study the Lp extension of the Christoffel problem and provide sufficient conditions for the problem,for the case p≥2.

关键词： Christoffel problem Laplace equation fundamental solution

Chemical additives affect sulfate reducing bacteria biofilm properties adsorbed on stainless steel 316L surface in circulating cooling water system

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Frontiers of Environmental Science & Engineering 2017年第2期11卷 143-156页

作者： Yu qi Jin li rui liang Sitong Ji Jianxiang li Meng liu Research Center for Aqueous Organic Pollutants Control and Water Quality Security Beijing Key Laboratory Beijing Jiaotong University Beijing 100044 China

This paper studied the biofilm properties and corrosion behavior of sulfate reducing bacteria （SRB） on stainless steel 316L （SS316L） surface in circulating cooling water system with and without additives including hydroxy ethyl fork phosphonic acid （HEDP）, dodecyl dimethyl benzyl anunonium chlotide （1227） and NaClO. Biochemical technique, electrochemical technology, X-ray photoelectron spectroscopy （XPS） and scanning electron microscope （SEM） were used. The results show that the extracellular polymeric substance （EPS） in biofilm attached on the SS316L surface mainly contain proteins and polysaccharides, the contents are 98 ***-2 and ***-2, respectively. The polysaccharides were cut by 1227 about 80%, while 55% by NaCIO. The proteins were reduced by NaCIO about 53%, while only 30% by 1227. The potentiodynamic polarization shows that the corrosion potential of SS316L was enhanced from -0.495 V to -0.390 V by the chemical additive delaying the occurrence of the corrosion. And the corrosion rate was also reduced from 5.19 × 10^-3 mm·a^-1 to 2.42 × 10^-3 mm＇a . But NaCIO stdl caused pitting corrosion after stenhzmg the bacteria, while 1227 can form a protective film on the surface of SS316L. Though HEDP contribute to the bacteria activity, it can enhance the breakdown potential. XPS results confirmed that 1227 can change the value of C：O in the biofilm attached on metal surface, and NaCIO can eliminate the existence of amidogen. This study would provide some recommendations for the selection of chemical additives in the thermal power plant.

关键词： Sulfate reducing bacteria (SRB)Chemical additivesBiofilmExtracellular polymeric substance (EPS)Microbe conosion

Radix Ilicis Pubescentis total flavonoids combined with mobilization of bone marrow stem cells to protect against cerebral ischemia/reperfusion injury

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Neural Regeneration Research 2016年第2期11卷 278-284页

作者： Ming-san Miao lin Guo rui-qi li Xiao Ma Henan University of Traditional Chinese Medicine

Previous studies have shown that Radix Ilicis Pubescentis total flavonoids have a neuroprotective effect, but it remains unclear whether Radix Ilicis Pubescentis total flavonoids have a synergistic effect with the recombinant human granulocyte colony stimulating factor-mobilized bone marrow stem cell transplantation on cerebral ischemia/reperfusion injury. Rat ischemia models were administered 0.3, 0.15 and 0.075 g/kg Radix Ilicis Pubescentis total flavonoids from 3 days before modeling to 2 days after injury. Results showed that Radix Ilicis Pubescentis total flavonoids could reduce pathological injury in rats with cerebral ischemia/reperfusion injury. The number of Nissl bodies increased, Bax protein expression decreased, Bcl-2 protein expression increased and the number of CD34-positive cells increased. Therefore, Radix Ilicis Pubescentis total flavonoids can improve the bone marrow stem cell mobilization effect, enhance the anti-apoptotic ability of nerve cells, and have a neuroprotective effect on cerebral ischemia/reperfusion injury in rats.

关键词： nerve regeneration Radix Ilicis Pubescentis total flavonoids bone marrow stem cells mobilization cerebral ischemia/reperfusion Nissl bodies Bax Bcl-2 CD34 neurons neural regeneration

Radix Ilicis Pubescentis total flavonoids ameliorates neuronal damage and reduces lesion extent in a mouse model of transient ischemic attack

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Neural Regeneration Research 2016年第3期11卷 441-446页

作者： Ming-san Miao lin Guo rui-qi li Xiao-lei Zhang College of Pharmacy Henan University of Traditional Chinese Medicine

Flavonoids are a major component in the traditional Chinese medicine Radix Ilicis *** studies have shown that the administration of Radix Ilicis Pubescentis total flavonoids is protective in cerebral ***,to our knowledge,no studies have examined whether the total flavonoids extracted from Radix Ilicis Pubescentis prevent or ameliorate neuronal damage following transient ischemic ***,Radix Ilicis Pubescentis total flavonoids question and the potential underlying ***,beginning 3 days before the induction of a mouse model of transient ischemic attack using tert-butyl hydroperoxide injections,mice were intragastrically administered 0.3,0.15,or 0.075 g/kg of Radix Ilicis Pubescentis total flavonoids daily for 10 *** results of spectrophotometric analyses demonstrated that Radix Ilicis Pubescentis total flavonoids enhanced oxygen free radical scavenging and reduced pathological alterations in the ***-eosin staining results showed that Radix Ilicis Pubescentis total flavonoids reduced hippocampal neuronal damage and cerebral vascular injury in this mouse model of transient ischemic *** results suggest that the antioxidant effects of Radix Ilicis Pubescentis total flavonoids alleviate the damage to brain tissue caused by transient ischemic attack.

关键词： nerve regeneration transient ischemic attack Radix Ilicis Pubescentis total flavonoids tert-butyl hydroperoxide malondialdehyde nitric oxide nitric oxide synthetase superoxide dismutase neural regeneration

Digital coding transmissive metasurface for multi-OAM-beam

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Frontiers of physics 2022年第6期17卷 193-202页

作者： Si Jia li Zhuo Yue li Guo Shai Huang Xiao Bin liu rui qi li Xiang Yu Cao Information and Navigation College Air Force Engineering UniversityXi’an 710077China State Key Laboratory of Millimeter Waves School of Information Science and EngineeringSoutheast UniversityNanjing 210096China Shaanxi Key Laboratory of Artificially-Structured Functional Materials and Devices Air Force Engineering UniversityXi'an 710051China

Orbital angular momentum(OAM)is a phenomenon of vortex phase distribution in free space,which has attracted enormous attention in theoretical research and practical application of wireless communication systems due to its characteristic of infinitely orthogonal ***,traditional methods generating OAM beams are bound to complex structure,large device,multiple layers,complex feed networks,and limited beams in microwave ***,a digital coding transmissive metasurface(DCTMS)with a single layer substrate and the bi-symmetrical arrow is proposed and designed to generate multi-OAM-beam based on Pancharatnam–Berry(PB)phase *** 3-bit phase response can be realized by encoding the geometric phase into rotation angle of unit cell for ***,the phase compensation of the metasurface is introduced to achieve the beam focusing and the conversion from spherical wave to plane *** to the digital convolution theorem,the far-field patterns and near-field distributions of multi-OAM-beam with l=–2 modes are adequately demonstrated by DCTMS *** OAM efficiency and the purity are calculated to demonstrate the excellent *** simulated and experimental results illustrate their performance of OAM *** designed DCTMS has profound application in multi-platform wireless communication systems and the multi-channel imaging systems.

关键词： transmissive metasurface orbital angular momentum Pancharatnam-Berry phase multi-beam phase compensation

Growth of ZSM-5 crystals within hollow β-zeolite

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Chinese Chemical Letters 2011年第9期22卷 1103-1106页

作者： qing Hu Zeng Xiang Bai Jia Jun Zheng Jia qi Chen rui Feng li Key Laboratory of Coal Science and Technology MOE Taiyuan University of Technology Taiyuan 030024 China

A zeolite composite composed of ZSM-5 and β-zeolites has been synthesized by a procedure of the nucleation and crystallization of ZSM-5 zeolite in the hollow β-zeolite. The property of β-zeolite crystals with aluminum-poor interior and aluminum-rich outer rim results in silicon extraction favorably in the aluminum-poor bulk rather than the aluminum-rich external surface. Subsequently, alkaline treatment offl-zeolite crystals during the second-step synthesis leads to a preferential dissolution of the aluminum-poor center and the formation of hollow β-zeolite crystals. ZSM-5 zeolite crystals are therefore embedded and grown within the hollow β-zeolite. The catalytic activities of Co-Hβ, Co-HZSM-5 and Co-HZSM-5/BEA are investigated during the reaction of methane catalytic reduction NO in the presence of O2.

关键词： ZSM-5 β-Zeolite Zeolite composite

Morita Equivalences Induced by Two-Sided Group Relative Hopf-Module

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Journal of Mathematical Research and Exposition 2011年第5期31卷 819-828页

作者： qiao ling GUO qi Hui li rui Fang HU College of Mathematics and Information Engineering Jiaxing University Zhejiang 314001 P. R. China

Let H be a Hopf π-coalgebra over a commutative ring k with bijective antipode S, and A and B right π-H-comodulelike algebras. We show that the pair of adjoint functors （F3 = A  Bop A□ HBop -,G3 = （-）coH） between the categories A□HBopM and AMπB-H is a pair of inverse equivalences, when A is a faithfully flat π-H-Galois extension. Furthermore, the categories Moritaπ-H（A,B） and Morita □π-H（AcoH,BcoH） are equivalent, if A and B are faithfully flat π-H-Galois extensions.

关键词： Hopf group Galois extension Morita equivalence group relative Hopf-module.

Machine learning and neural network supported state of health simulation and forecasting model for lithium-ion battery

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Frontiers in Energy 2024年第2期18卷 223-240页

作者： Nan qi Kang YAN Yajuan YU rui li Rong HUANG Lai CHEN Yuefeng SU Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Department of Energy and Environmental Materials School of Materials Science and EngineeringBeijing Institute of TechnologyBeijing 100081China Beijing Electric Vehicle Co. Ltd.Beijing 100176China

As the intersection of disciplines deepens,the field of battery modeling is increasingly employing various artificial intelligence(AI)approaches to improve the efficiency of battery management and enhance the stability and reliability of battery *** paper reviews the value of AI methods in lithium-ion battery health management and in particular analyses the application of machine learning(ML),one of the many branches of AI,to lithium-ion battery state of health(SOH),focusing on the advantages and strengths of neural network(NN)methods in ML for lithium-ion battery SOH simulation and *** is one of the important branches of ML,in which the application of NNs such as backpropagation NN,convolutional NN,and long short-term memory NN in SOH estimation of lithium-ion batteries has received wide *** so far have shown that the utilization of NN to model the SOH of lithium-ion batteries has the advantages of high efficiency,low energy consumption,high robustness,and scalable *** the future,NN can make a greater contribution to lithium-ion battery management by,first,utilizing more field data to play a more practical role in health feature screening and model building,and second,by enhancing the intelligent screening and combination of battery parameters to characterize the actual lithium-ion battery SOH to a greater *** in-depth application of NN in lithium-ion battery SOH will certainly further enhance the science,reliability,stability,and robustness of lithium-ion battery management.

关键词： machine learning lithium-ion battery state of health neural network artificial intelligence

Normalized glandular dose coefficients for digital breast tomosynthesis using detailed Chinese breast models

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Nuclear Science and Techniques 2024年第5期35卷 42-59页

作者： Jia-Hao Wang rui qiu An-Kang Hu Ye-qi liu Zhen Wu Hui Zhang Jun-li li Department of Engineering Physics Tsinghua UniversityBeijing 100084China Key Laboratory of Particle and Radiation Imaging Ministry of EducationTsinghua UniversityBeijing 100084China Joint Institute of Tsinghua University Nuctech Company Limited BeijingBeijing 100084China

The rise in breast cancer diagnoses among Chinese women has necessitated the use of X-ray breast screening,which carries a radiation *** study aimed to provide a dosimetry protocol for the Chinese female population to replace the traditional standard that utilizes simplified breast models,for the accurate estimation of the mean glandular dose of a patient undergoing digital breast tomosynthesis(DBT).The first set of detailed Chinese female breast models and representative breast parameters was *** backscatter radiation and computational efficiency,we improved the combination of these models and the Chinese reference adult female whole-body voxel *** acquisition for four commercial DBT systems that are widely employed in China was simulated using the Monte Carlo method to obtain the normalized glandular dose coefficients of DBT(D_(gN)^(DBT))and the glandular depth dose(D_(g)^(dep)(z))for different breast characteristics and X-ray *** calculated a series of D_(gN)^(DBT) values for breasts with different percentage mass glandularities(5%,25%,50%,75%,and 100%)and compressed breast thicknesses(2,3,4,5,6,and 7 cm)at various tube potentials(25,28,30,32,35,and 49 kV)and target/filter combinations(W/Rh,W/Al,Mo/Mo,Rh/Rh,and Rh/Ag).The parameter dependence of the breast characteristics and beam conditions on D_(gN)^(DBT) in detailed breast models was *** D_(gN)^(DBT) results were 14.6-51.0%lower than those of the traditional dosimetry standard in *** difference in D_(gN)^(DBT) was mainly due to a decrease in the depth of the main energy deposition area caused by the glandular distribution along the depth *** results obtained in this study may be used to improve breast dosimetry in China and provide more detailed information on risk assessment during DBT.

关键词： Digital breast tomosynthesis Normalized glandular dose coefficients Detailed breast model Monte Carlo simulation