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Natural Host–Environmental Media–Human: A New Potential Pathway of COVID-19 Outbreak Perspective

Miao Li, Yunfeng Yang, Yun Lu, Dayi Zhang, Yi Liu, Xiaofeng Cui, Lei Yang, Ruiping Liu, Jianguo Liu, Guanghe Li, Jiuhui Qu

Engineering 2020, Volume 6, Issue 10,   Pages 1085-1098 doi: 10.1016/j.eng.2020.08.010

Abstract: quasi-host.” We reason that the environmental quasi-host is likely to be a key node in helping recognize theorigin of SARS-CoV-2; thus, SARS-CoV-2 might be transmitted along the route of natural host–environmentalIndeed, contacts between humans and environmental quasi-hosts are greatly increasing as the space ofMoreover, viruses can survive for a long time in environmental media.

Keywords： Environmental quasi-host     Patient zero     SARS-CoV-2     Pathway     Origin of COVID-19    

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Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 405-419 doi: 10.1007/s11709-015-0310-1

Abstract: The free vibration analysis of cracked thin plates via a quasi-convex coupled isogeometric-meshfree methodvector simultaneously offers the consistent isogeometric-meshfree coupling in the coupled region and the quasi-convexThe quasi-convex meshfree shape functions mimic the isogeometric basis function as well as offer the

Keywords： meshfree method     isogeometric analysis     quasi-convex isogeometric-meshfree method     free vibration     cracked    

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Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 51-53

Abstract:

Subjected to the annual changes of the air temperature, the quasi-period rules of the operational

Keywords： hot oil pipeline     air temperature     soil environment     quasi-period    

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Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1584-1594 doi: 10.1007/s11705-022-2189-4

Abstract: effect, and finally the magnetic moment differences between paramagnetic and diamagnetic rare earths in quasi-liquidMagnetic separation via quasi-liquid system strategy provides a possibility of the novel, green, and

Keywords： rare earth element     different magnetic moment     magnetic separation     ionic liquid    

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A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 380-396 doi: 10.1007/s11709-018-0471-9

Abstract: In the recent years, the phase field method for simulating fracture problems has received considerable attention. This is due to the salient features of the method: 1) it can be incorporated into any conventional finite element software; 2) has a scalar damage variable is used to represent the discontinuous surface implicitly and 3) the crack initiation and subsequent propagation and branching are treated with less complexity. Within this framework, the linear momentum equations are coupled with the diffusion type equation, which describes the evolution of the damage variable. The coupled nonlinear system of partial differential equations are solved in a ‘staggered’ approach. The present work discusses the implementation of the phase field method for brittle fracture within the open-source finite element software, FEniCS. The FEniCS provides a framework for the automated solutions of the partial differential equations. The details of the implementation which forms the core of the analysis are presented. The implementation is validated by solving a few benchmark problems and comparing the results with the open literature.

Keywords： phase field method     FEniCS     brittle fracture     crack propagation     variational theory of fracture    

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Predictor-corrector algorithm for solving quasi-separated-flow and transient distributed-parameter model

Ping ZHANG, Guoliang DING

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 535-541 doi: 10.1007/s11708-010-0113-y

Abstract: The successive sub?stitution (SS) method is a suitable approach to solving the transient distributed-parameter model for heat exchangers. However, this method must be enhanced because its convergence heavily depends on the iterative initial pressure. When the iterative initial pressure is improperly assigned, the calculated flow rates become negative values, causing the state parameters to exhibit negative values as well. Therefore, a predictor-corrector algorithm (PCA) is proposed to improve the convergence of the SS method. A predictor is developed to determine an appropriate iterative initial pressure. Total fluid mass is adopted as the convergence criterion of pressure iteration instead of outlet flow rate as is done in the SS method. Convergence analysis and case study of the PCA and SS method are conducted, which show that the PCA has better convergence than the SS method under the same working conditions.

Keywords： algorithm     convergence     heat exchanger     modeling     transient    

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Gene and protein expression of proteinase-activated receptor-1, 2 in a murine model of acute graft host

Quan LI MD , Weiming LI MD , Ping ZOU MD , Jian ZHANG BM ,

Frontiers of Medicine 2009, Volume 3, Issue 3,   Pages 309-315 doi: 10.1007/s11684-009-0043-4

Abstract: However, little is known about the function of PAR-1, 2 in acute graft host disease (GVHD).

Keywords： graft vs host disease     proteinase-activated receptor     murine model     hematopoietic stem cell transplantation    

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Integrated analysis of gut microbiome and host immune responses in COVID-19

Frontiers of Medicine 2022, Volume 16, Issue 2,   Pages 263-275 doi: 10.1007/s11684-022-0921-6

Abstract: Emerging evidence indicates that the gut microbiome contributes to the host immune response to infectiousHere, to explore the role of the gut microbiome in the host immune responses in COVID-19, we conductedWe further analyzed the correlation between the abundance of gut microbes and host responses, and obtainedhighlighted a potential regulatory role of severity related gut microbes in the immune response of host

Keywords： COVID-19     SARS-COV-2     gut microbiome     immune response    

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Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 548-557 doi: 10.1007/s11709-017-0434-6

Abstract: Peridynamics (PD) is a nonlocal continuum theory based on integro-differential equations without spatial derivatives. The fracture criterion is implicitly incorporated in the PD theory and fracture is a natural outcome of the simulation. However, capturing of complex mixed-mode crack patterns has been proven to be difficult with PD. On the other hand, the extended finite element method (XFEM) is one of the most popular methods for fracture which allows crack propagation with minimal remeshing. It requires a fracture criterion which is independent of the underlying discretization though a certain refinement is needed in order to obtain suitable results. This article presents a comparative study between XFEM and PD. Therefore, two examples are studied. The first example is crack propagation in a double notched specimen under uniaxial tension with different crack spacings in loading direction. The second example is the specimens with two center cracks. The results show that PD as well as XFEM are well suited to capture this type of behaviour.

Keywords： XFEM     peridynamic     bilateral crack     parallel double cracks     nonlocal theory    

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Featurematching using quasi-conformalmaps Article

Chun-xue WANG, Li-gang LIU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 644-657 doi: 10.1631/FITEE.1500411

Abstract: can be formulated as a constrained optimization involving both the Beltrami coefficient (BC) term and quasi-conformal

Keywords： Feature correspondence     Quasi-conformal map     Splitting method    

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Graft versus host disease after liver transplantation: A case report

Peng-Ji GAO, Xi-Sheng LENG, Dong WANG, Guang-Ming LI, Lei HUANG, Jie GAO, JI-Ye ZHU,

Frontiers of Medicine 2010, Volume 4, Issue 4,   Pages 469-472 doi: 10.1007/s11684-010-0120-8

Abstract: In documenting clinical experience in the diagnosis and treatment of graft host disease (GVHD), we retrospectively

Keywords： liver transplantation     graft versus host disease    

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INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 447-459 doi: 10.15302/J-FASE-2021399

Abstract: The interactions between non-host roots and pathogens may be key in the inhibition of soilborne pathogensThese interspecific interactions between non-host roots and pathogens were found to be an important factor

Keywords： fennel and tobacco rotation     infection behavior     Phytophthora nicotianae     reactive oxygen species     vanillin    

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Permeability and thermal conductivity of host compressed natural graphite for consolidated activated

Bo TIAN, Liwei WANG, Zhequan JIN, Ruzhu WANG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 159-165 doi: 10.1007/s11708-011-0145-y

Abstract: thermal conductivity test units were set up to study the heat and mass transfer performance of the hostSuch a result showed that CENG was a promising host material for AC to improve the heat transfer performance

Keywords： permeability     thermal conductivity     expanded nature graphite     activated carbon    

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Host protection against Omicron BA.2.2 sublineages by prior vaccination in spring 2022 COVID-19 outbreak

Frontiers of Medicine 2023, Volume 17, Issue 3,   Pages 562-575 doi: 10.1007/s11684-022-0977-3

Abstract: The Omicron family of SARS-CoV-2 variants are currently driving the COVID-19 pandemic. Here we analyzed the clinical laboratory test results of 9911 Omicron BA.2.2 sublineages-infected symptomatic patients without earlier infection histories during a SARS-CoV-2 outbreak in Shanghai in spring 2022. Compared to an earlier patient cohort infected by SARS-CoV-2 prototype strains in 2020, BA.2.2 infection led to distinct fluctuations of pathophysiological markers in the peripheral blood. In particular, severe/critical cases of COVID-19 post BA.2.2 infection were associated with less pro-inflammatory macrophage activation and stronger interferon alpha response in the bronchoalveolar microenvironment. Importantly, the abnormal biomarkers were significantly subdued in individuals who had been immunized by 2 or 3 doses of SARS-CoV-2 prototype-inactivated vaccines, supporting the estimation of an overall 96.02% of protection rate against severe/critical disease in the 4854 cases in our BA.2.2 patient cohort with traceable vaccination records. Furthermore, even though age was a critical risk factor of the severity of COVID-19 post BA.2.2 infection, vaccination-elicited protection against severe/critical COVID-19 reached 90.15% in patients aged ≥ 60 years old. Together, our study delineates the pathophysiological features of Omicron BA.2.2 sublineages and demonstrates significant protection conferred by prior prototype-based inactivated vaccines.

Keywords： SARS-CoV-2     COVID-19     host response     bronchoalveolar lavage fluid (BALF)    

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Risk factors for chronic graft-versus-host disease after anti-thymocyte globulin-based haploidentical

Meng Lv, Xiaohui Zhang, Lanping Xu, Yu Wang, Chenhua Yan, Huan Chen, Yuhong Chen, Wei Han, Fengrong Wang, Jingzhi Wang, Kaiyan Liu, Xiaojun Huang, Xiaodong Mo

Frontiers of Medicine 2019, Volume 13, Issue 6,   Pages 667-679 doi: 10.1007/s11684-019-0702-z

Abstract: Chronic graft-versus-host disease (cGVHD) is a major complication following unmanipulated haploidentical

Keywords： acute graft-versus-host disease     chronic graft-versus-host disease     National Institutes of Health consensus    

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Title Author Date Type Operation

Natural Host–Environmental Media–Human: A New Potential Pathway of COVID-19 Outbreak

Miao Li, Yunfeng Yang, Yun Lu, Dayi Zhang, Yi Liu, Xiaofeng Cui, Lei Yang, Ruiping Liu, Jianguo Liu, Guanghe Li, Jiuhui Qu

Journal Article

Free vibration analysis of cracked thin plates by quasi-convex coupled isogeometric-meshfree method

Hanjie ZHANG,Junzhao WU,Dongdong WANG

Journal Article

Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Journal Article

Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Journal Article

A FEniCS implementation of the phase field method for quasi-static brittle fracture

HIRSHIKESH, Sundararajan NATARAJAN, Ratna Kumar ANNABATTULA

Journal Article

Predictor-corrector algorithm for solving quasi-separated-flow and transient distributed-parameter model

Ping ZHANG, Guoliang DING

Journal Article

Gene and protein expression of proteinase-activated receptor-1, 2 in a murine model of acute graft host

Quan LI MD , Weiming LI MD , Ping ZOU MD , Jian ZHANG BM ,

Journal Article

Integrated analysis of gut microbiome and host immune responses in COVID-19

Journal Article

Peridynamics versus XFEM: a comparative study for quasi-static crack problems

Jinhai ZHAO, Hesheng TANG, Songtao XUE

Journal Article

Featurematching using quasi-conformalmaps

Chun-xue WANG, Li-gang LIU

Journal Article

Graft versus host disease after liver transplantation: A case report

Peng-Ji GAO, Xi-Sheng LENG, Dong WANG, Guang-Ming LI, Lei HUANG, Jie GAO, JI-Ye ZHU,

Journal Article

INTERFERENCE BY NON-HOST PLANT ROOTS AND ROOT EXUDATES IN THE INFECTION PROCESSES OF PHYTOPHTHORA NICOTIANAE

Journal Article

Permeability and thermal conductivity of host compressed natural graphite for consolidated activated

Bo TIAN, Liwei WANG, Zhequan JIN, Ruzhu WANG

Journal Article

Host protection against Omicron BA.2.2 sublineages by prior vaccination in spring 2022 COVID-19 outbreak

Journal Article

Risk factors for chronic graft-versus-host disease after anti-thymocyte globulin-based haploidentical

Meng Lv, Xiaohui Zhang, Lanping Xu, Yu Wang, Chenhua Yan, Huan Chen, Yuhong Chen, Wei Han, Fengrong Wang, Jingzhi Wang, Kaiyan Liu, Xiaojun Huang, Xiaodong Mo

Journal Article