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Quantitative Analysis of the Effectiveness of Antigen- and Polymerase Chain Reaction-Based Combination Strategies for Containing COVID-19 Transmission in a Simulated Community Article

Qiangru Huang, Yanxia Sun, Mengmeng Jia, Ting Zhang, Fangyuan Chen, Mingyue Jiang, Qing Wang, Luzhao Feng, Weizhong Yang

Engineering 2023, Volume 28, Issue 9, Pages 234-242 doi: 10.1016/j.eng.2023.01.004

Abstract: Testing of infectious populations remains a key strategy to contain the COVID-19 outbreak, delay theeffectiveness, and optimize testing strategies based on these influencing factors.Antigen testing and its combination strategies were more efficient than polymerase chain reaction (PCRfactor to be optimized to improve PCR strategies.testing.

Keywords： COVID-19 Antigen testing PCR testing Testing strategies

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Using pyrosequencing and quantitative PCR to analyze microbial communities

Husen ZHANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1, Pages 21-27 doi: 10.1007/s11783-011-0303-9

Abstract: New high-throughput technologies continue to emerge for studying complex microbial communities. In particular, massively parallel pyrosequencing enables very high numbers of sequences, providing a more complete view of community structures and a more accurate inference of the functions than has been possible just a few years ago. In parallel, quantitative real-time polymerase chain reaction (QPCR) allows quantitative monitoring of specific community members over time, space, or different environmental conditions. In this review, the principles of these two methods and their complementary applications in studying microbial ecology in bioenvironmental systems are discussed. The parallel sequencing of amplicon libraries and using barcodes to differentiate multiple samples in a pyrosequencing run are explained. The best procedures and chemistries for QPCR amplifications are also described and advantages of applying automation to increase accuracy are addressed. Three examples in which pyrosequencing and QPCR were used together to define and quantify members of microbial communities are provided: in the human large intestine, in a methanogenic digester whose sludge was made more bioavailable by a high-voltage pretreatment, and on the biofilm anode of a microbial electrolytic cell. The key findings in these systems and how both methods were used in concert to achieve those findings are highlighted.

Keywords： polymerase chain reaction (PCR) microbial communities pyrosequencing gut microbial fuel cell sludge

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Progress in terahertz nondestructive testing: A review

Shuncong ZHONG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3, Pages 273-281 doi: 10.1007/s11465-018-0495-9

Abstract: Recently, THz nondestructive testing (NDT) technology has become an interesting topic.

Keywords： terahertz pulsed imaging (TPI) nondestructive testing (NDT) composite material thermal barrier coating

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Measurement and Control Technology for the Array of Low Cost PCR Microreactors

Li Xianming ,Zhang Yulin ,Li Jiantian

Strategic Study of CAE 2007, Volume 9, Issue 7, Pages 76-81

Abstract:

In this paper a new style of polymerase chain reaction(PCR)equipmentIt is the concrete way to reduce the cost of PCR chips and improve the reliability of the chips.The measurement and control scheme for the low-cost PCR chips is designed.The uncertainty of indirect to the temperature of PCR liquid in low-cost PCR chips is also assessed.Its performance in temperature cycling meets the requirements of PCR.

Keywords： microreactors measurement control polymerase chain reaction

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Erratum to: Using pyrosequencing and quantitative PCR to analyze microbial communities

Husen ZHANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3, Pages 488-488 doi: 10.1007/s11783-011-0342-2

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Sonic General Non-destructive Testing Technique

Chen Jimao

Strategic Study of CAE 2000, Volume 2, Issue 4, Pages 64-69

Abstract:

This paper describes new general multi-mode non-destructive testing (NDT) of composite materials andThis technique which is based on sonic and ultrasonic testing performs five different modes of testing

Keywords： sonic general testing general non-destructive testing (NDT) non-destructive testing of composite materials mechanical impedance analysis (MIA) vibration analysis (VA) resonance testing

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Novel sensing techniques for full-scale testing of civil structures

Kaoshan DAI, Zhenhua HUANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 240-256 doi: 10.1007/s11709-012-0172-8

Abstract: Performing full-scale structural testing is an important methodology for researchers and engineers inFull scale testing helps the researchers understand civil infrastructures’ loading scenarios, behaviorsTo conduct a full-scale structural testing, sensors are used for data acquisitions.effective sensors, this study reviewed and categorized new sensing techniques for full-scale structural testingThe researchers of this study categorized sensors used for civil-infrastructure testing into traditional

Keywords： sensing technique full-scale testing wireless sensor remote sensing LiDAR laser vibrometer

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Permeability testing of drilling core sample from pavement

WANG Suda, TANG Zhengguang, NING Xiaojun, WU Peiguan, XING Pingyi

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4, Pages 391-394 doi: 10.1007/s11709-008-0045-3

Abstract: equipment is used to measure the permeability coefficient of the pavement drilling core sample and relevant testingTesting drilling core samples from a certain highway of Yunnan province has been proven to be feasible

Keywords： province material feasible permeability coefficient equipment

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Safety evaluation of microbial pesticide (HaNPV) based on PCR method

Miao Zhao, Shufei Li, Qinghong Zhou, Dianming Zhou, Ning He, Zhiyong Qian

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 2, Pages 377-384 doi: 10.1007/s11705-018-1777-9

Abstract: Microbial pesticides can prevent and control diseases and pests of crops, and has become one of the important measures to ensure food and environmental safety. However, the potential harm of microbial pesticides to humans and animals is a serious concern at home and abroad. In this paper, we have investigated the infectivity and pathogenicity of a representative of viral microbial pesticides, helicoverpa armigera nuclear polyhedrosis virus (HaNPV), by specific and highly sensitive polymerase chain reaction technology. The results show that HaNPV can be gradually cleared in a short time after getting into blood of experimental rats, and does not infect other tissues or organs of animals; also indicate that the test subjects are not infectious to experimental rats after intravenous injection of HaNPV. Our method has good specificity and repeatability, and could provide an important reference for establishment of infectivity and pathogenicity detection methods for viral microbial pesticides in future.

Keywords： microbial pesticides HaNPV acute intravenous injection infectivity pathogenicity

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Shaking table testing of hard layered soil-pile-structure interaction system

LI Peizhen, REN Hongmei, LU Xilin, SONG Heping, CHEN Yueqing

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3, Pages 346-352 doi: 10.1007/s11709-007-0046-7

Abstract: Shaking table tests on a dynamic interaction system of hard layered soil, pile foundation and frame structure were carried out. The earthquake damage of the superstructure and foundation was reproduced. Based on these tests, several key issues about the seismic response of the dynamic soil-structure interaction (SSI) system were studied. The natural frequency of the system was less than that of the structure on rigid foundation if the SSI is not taken into account, while its damping ratio was larger than that of the structure. The mode shape of the system was different from that of the structure on the fixed base in that there were rocking and swinging at the foundation. Magnification or reduction of vibration transferred by soil was related to soil characteristic, excitation magnitude, and so on. Generally, sand magnifies vibration, while viscous powder soil dampens vibration. The components of the acceleration response at the top of the superstructure were based on the relative magnitude of the rocking stiffness, the swing stiffness of the foundation and the stiffness of the super-structure. The multi-direction excitations have little effect on the key issues of the horizontal SSI.

Keywords： super-structure Generally Magnification frequency different

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Experimental monitoring of the strengthening construction of a segmental box girder bridge and field testing

Ali Fadhil NASER, Zonglin WANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 308-320 doi: 10.1007/s11709-012-0140-3

Abstract: Prestressed concrete segmental box girder bridges are composed of short concrete segments that are either precast or cast in situ and then joined together by longitudinally post-tensioning internal, external, or mixed tendons. The objectives of this study are to monitor the construction process of the external prestressing tendons to strengthen the bridge structure and perform a field load test to measure the strain and the deflection of the anchorage devices of the external prestressing tendons to determine the state of these devices after tension forces are applied. The monitoring process of the external prestressing tendons construction includes inspecting the cracks in the diaphragm anchorage and the deviation block devices before the tension forces are applied to the external tendons; measuring the deformation of the steel deviation cross beam during the tension process; measuring the deformation of the box girder after different levels of tension forces are applied; measuring the elongation of the external tendons in each level of the tension; and measuring the natural frequency of the external tendons after the tension process is complete. The results of the monitoring process show that the measured values of the deformation, the elongation, and the natural frequency meet the requirements. Therefore, there is no damage during the construction and the tensioning of the external prestressing tendons. A field load test is performed to the anchorage beam, the steel deviation block devices, and the steel deviation cross beam. The field load test results of the anchorage devices show that the values of the strains, the stresses, and the deflection are less than the respective allowable limit values in the requirements. Therefore, the anchorage devices have sufficient strength, and the working state is good after the tension forces are applied to the external prestressing tendons.

Keywords： prestressed concrete box girder monitoring external tendons strain deflection

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Sulfidation/regeneration multicycle testing of nickel-modified ZnFe

Wei LI, Jinju GUO, Jiejie HUANG, Jiaotao ZHAO

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 4, Pages 435-440 doi: 10.1007/s11705-010-0506-9

Abstract: indicate that the nickel-modified ZnFe O keeps high reactivity and structural stability in the multicycle testing

Keywords： hot gas desulphurization nickel-modified ZnFe₂O₄ sulfidation/regeneration

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Steam turbine governor modeling and parameters testing for power system simulation

Ying LI, Chufeng PENG, Zenghui YANG

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 198-203 doi: 10.1007/s11708-009-0004-2

Abstract: The theoretical modeling, parameters test and model correction for a steam turbine (ST) governor are discussed. A set of ST Governor system model for power system simulation is created based on this research. A power system simulation for an actual power grid accident is conducted using this new model and the comparison between the simulation and actual data show that the results are satisfactory.

Keywords： power system simulation ST governor system modeling parameters testing

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Vibration testing of a steel girder bridge using cabled and wireless sensors

Dapeng ZHU, Yang WANG, James BROWNJOHN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3, Pages 249-258 doi: 10.1007/s11709-011-0113-y

Abstract: In the next series of testing, 16 wireless accelerometers are installed under the deck of another bridge

Keywords： wireless sensing structural health monitoring (SHM) signal conditioning operating deflection analysis ambient vibration

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Standardization in testing methods for SOFC single cells

Tu Hengyong

Strategic Study of CAE 2013, Volume 15, Issue 2, Pages 33-38

Abstract:

Performance testing results of solid oxide fuel cell (SOFC) reveal complex relationship betweenStandardization in testing methods contributes to building of effective and sound connections betweenThe comparison can be made in regard to testing results from different institutions.construction, procedure formulation and standardized reporting of results for SOFC single cell testing

Keywords： solid oxide fuel cell performance testing testing routines standardization

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Title Author Date Type Operation

Quantitative Analysis of the Effectiveness of Antigen- and Polymerase Chain Reaction-Based Combination Strategies for Containing COVID-19 Transmission in a Simulated Community

Qiangru Huang, Yanxia Sun, Mengmeng Jia, Ting Zhang, Fangyuan Chen, Mingyue Jiang, Qing Wang, Luzhao Feng, Weizhong Yang

Journal Article

Using pyrosequencing and quantitative PCR to analyze microbial communities

Husen ZHANG

Journal Article

Progress in terahertz nondestructive testing: A review

Shuncong ZHONG

Journal Article

Measurement and Control Technology for the Array of Low Cost PCR Microreactors

Li Xianming ,Zhang Yulin ,Li Jiantian

Journal Article

Erratum to: Using pyrosequencing and quantitative PCR to analyze microbial communities