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Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 326-331 doi: 10.1007/s11465-009-0045-6

Abstract: interaction simulation approach, used for modeling sharp interfaces and discontinuities in complex media (LISA/SIM theory), has been effectively applied to numerical simulations of elastic wave interaction.This modeling is based on the local interaction simulation approach theory and is finally accomplishedIn this paper, the Lamb waves propagating characteristics and the LISA/SIM theory are introduced.The finite difference equations describing wave propagation used in the LISA/SIM theory are obtained.

Keywords： Lamb wave     modeling     LISA/SIM theory     finite difference equation     finite element    

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quality of care for patients with type 2 diabetes in China: findings from the Shanghai Integration Model (SIM

Frontiers of Medicine 2022, Volume 16, Issue 1,   Pages 126-138 doi: 10.1007/s11684-021-0897-7

Abstract: This cross-sectional study aimed to investigate the quality of care of diabetes in Shanghai, China. A total of 173 235 patients with type 2 diabetes in 2017 were included in the analysis. Profiles of risk factors and intermediate outcomes were determined. The patients had a mean age of 66.43±8.12 (standard deviation (SD)) years and a mean diabetes duration of 7.95±5.53 (SD) years. The percentage of patients who achieved the target level for HbA1c (<7.0%) was 48.6%. Patients who achieved the target levels for blood pressure (BP)<130/80 mmHg and low-density lipoprotein-cholesterol (LDL-c)<2.6 mmol/L reached 17.5% and 34.0%, respectively. A total of 3.8% achieved all three target levels, and the value increased to 6.8% with an adaptation of the BP target level (<140/90 mmHg) for those over 65 years. Multivariable analysis identified the factors associated with a great likelihood of achieving all three target levels: male, young age, short diabetes duration, low body mass index, macrovascular complications, no microvascular complications, prescribed with lipid-lowering medication, and no prescription of antihypertensive medication. In conclusion, nearly 50% and one-third of the patients with diabetes met the target levels for HbA1c and LDL-c, respectively, with a low percentage achieving the BP target level. The percentage of patients who achieved all three target levels needs significant improvement.

Keywords： type 2 diabetes     quality of care     macrovascular complication     microvascular complication     treatment pattern     epidemiology    

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Diversity-oriented synthesis of blue emissive nitrogen heterocycles and their conjugation with carbon nano-onions

Viviana Maffeis, Lisa Moni, Daniele Di Stefano, Silvia Giordani, Renata Riva

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1,   Pages 76-89 doi: 10.1007/s11705-019-1833-0

Abstract: The search for new fluorescent molecules for possible applications as functional -electron systems and their conjugation with different nanomaterials is nowadays of paramount importance to broaden the availability of materials with different properties. Herein we present a diversity-oriented approach to heterocyclic luminophores based on a multicomponent Ugi reaction followed by a Pd-mediated cascade sequence. The new molecules are coupled to carbon nano-onions, and hybrid systems represent the first example of blue emitters conjugated with these carbon nanoparticles.

Keywords： carbon nano-onions     multicomponent reactions     blue emitters     fluorescence     isoquinolines    

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Development of temperature-robust damage factor based on sensor fusion for a wind turbine structure

Jong-Woong PARK,Sung-Han SIM,Jin-Hak YI,Hyung-Jo JUNG

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 1,   Pages 42-47 doi: 10.1007/s11709-014-0285-3

Abstract: Wind power systems have gained much attention due to the relatively high reliability, maturity in technology and cost competitiveness compared to other renewable alternatives. Advances have been made to increase the power efficiency of the wind turbines while less attention has been focused on structural integrity assessment of the structural systems. Vibration-based damage detection has widely been researched to identify damages on a structure based on change in dynamic characteristics. Widely spread methods are natural frequency-based, mode shape-based, and curvature mode shape-based methods. The natural frequency-based methods are convenient but vulnerable to environmental temperature variation which degrades damage detection capability; mode shapes are less influenced by temperature variation and able to locate damage but requires extensive sensor instrumentation which is costly and vulnerable to signal noises. This study proposes novelty of damage factor based on sensor fusion to exclude effect of temperature variation. The combined use of an accelerometer and an inclinometer was considered and damage factor was defined as a change in relationship between those two measurements. The advantages of the proposed method are: 1) requirement of small number of sensor, 2) robustness to change in temperature and signal noise and 3) ability to roughly locate damage. Validation of the proposed method is carried out through numerical simulation on a simplified 5 MW wind turbine model.

Keywords： sensor fusion     damage detection     structural health monitoring    

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Two-dimensional SnS2 nanosheets on Prussian blue template for high performance sodium ion batteries

Sim, Kakui Ma, Zhixiang Huang, Shaozhuan Huang, Ye Wang, Huiying Yang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 3,   Pages 493-500 doi: 10.1007/s11705-019-1826-z

Abstract: Three-dimensional Prussian blue (PB) nanostructures was obtained via a one-step hydrothermal method. Subsequently, two-dimensional tin disulfide (SnS ) nanosheets were grown onto PB through a facile hydrothermal synthesis. The as prepared SnS /PB is further employed as the anode of sodium ion batteries (SIBs). SnS /PB nanoarchitecture delivers a specific capacity of 725.7 mAh∙g at 50 mA∙g . When put through more than 200 cycles, it achieved a stable cycling capacity of 400 mAh∙g at 200 mA∙g . The stable Na storage properties of SnS /PB was attributed to the synergistic effect among the conductive PB carbon, used as the template in this work. These results obtained potentially paves the way for the development of excellent electrochemical performance with stable performance of SIBs.

Keywords： Prussian blue     carbon nanocubes     tin disulfide     sodium ion batteries    

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Design of GPRS Data Terminal Based on S3C2410

Sun Xueyong

Strategic Study of CAE 2007, Volume 9, Issue 12,   Pages 94-96

Abstract: and working process of the embedded Internetconnected platform, which regards S3C2410 as kernel and SIM100

Keywords： GPRS；embedded Internet；S3C2410；SIM100-E    

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Novel perspective for urban water resource management:

Lijie Zhou, Hongwu Wang, Zhiqiang Zhang, Jian Zhang, Hongbin Chen, Xuejun Bi, Xiaohu Dai, Siqing Xia, Lisa

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1308-z

Abstract: Abstract • 5R (Recover, Reduce, Recycle, Resource and Reuse) approaches to manage urban water. • 5R harvests storm water, gray water and black water in several forms. • 5R offers promise for moving solutions for urban water scarcity in practice. Demand for water is expanding with increases in population, particularly in urban areas in developing countries. Additionally, urban water system needs a novel perspective for upgradation with urbanization. This perspective presents a novel 5R approach for managing urban water resources: Recover (storm water), Reduce (toilet flushing water), Recycle (gray water), Resource (black water), and Reuse (advanced-treated wastewater). The 5R generation incorporates the latest ideas for harvesting storm water, gray water, and black water in its several forms. This paper has briefly demonstrated each R of 5R generation for water treatment and reuse. China has the chance to upgrade its urban water systems according to 5R principles. Already, a demonstration project of 5R generation has been installed in Qingdao International Horticultural Exposition, and Dalian International Convention Center (China) has applied 5R, achieving over 70% water saving. The 5R offers promise for moving solutions for urban water scarcity from “hoped for in the future” to “realistic today”.

Keywords： 5R generation     Recover     Reduce     Recycle     Resource     Reuse    

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Phosphorus status, use and recycling in a Chinese peri-urban region with intensive animal husbandry and cropping systems

Marco ROELCKE, Lisa HEIMANN, Yong HOU, Jianbin GUO, Qiaoyun XUE, Wei JIA, Anne OSTERMANN, Roxana Mendoza

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 388-402 doi: 10.15302/J-FASE-2019286

Abstract:

The Sino-German research collaboration project, “Recycling of organic residues from agricultural and municipal origin in China” (2008–2012), comprising different interdisciplinary research groups, and also German small and medium-sized enterprises, aimed at developing integrated strategies and solutions for the recycling of organic residues in China. In an intensive crop-livestock agricultural region in the Shunyi District of Beijing, five typical cropping systems were investigated. The research was conducted in the form of analyses of phosphorus (P) in soil, plants, animal feed, animal products, manures, mineral and organic fertilizers and the derivation of the corresponding nutrient balances and P flows. The mean annual P balance surplus was 492 kg·ha ·yr P for the vegetable production system, significantly higher ( <0.05) than that for orchards (130 kg·ha ·yr P) and cereal crops (83 kg·ha ·yr P). Plant-available P (Olsen-P) concentrations of topsoils (0–20 cm) had good correlations with the amounts of P applied (from mineral and organic sources). Compared to results from the Second Chinese National Soil Survey of 1981, mean concentrations of available P in soils of 19 plots investigated in Shunyi District increased 10-fold (from 7.3 to 60 mg·kg ) from 1981 to 2009. On average, the critical limit for Olsen-P concentrations (>30 mg·kg ) that can lead to increased risk of P loss was exceeded in all five cropping systems. With feed additives, the “natural background value” (Chinese Environmental Quality Standard for Soils) of copper and zinc in topsoils was exceeded at several sites. Screening for several substances in the veterinary antibiotic classes of sulfonamides, tetracyclines, and fluoroquinolones revealed widespread topsoil contamination. Calculated livestock densities were 10.6 livestock units per ha arable land in 2007. Animal husbandry is increasingly conducted in large operations, making traditional ways of reuse difficult to apply. Comparing three management systems for treatment of organic residues from a pig farm via aerobic (composting) or anaerobic (biogas) treatment in a life cycle assessment, the resulting cropland demand for a sustainable land application of biogas effluent varied between 139 and 288 ha·yr , well above the cropland area owned by the farm (10 ha). The mismatch problems in the above context between business-as-usual and improving performance are framed and discussed as (1) the mismatch between centralized animal husbandry and smallholder farming, (2) the mismatch between livestock density and cropland, (3) nutrient (including P) recycling and increasing organic matter content versus energy production, (4) subsidies for compost production and biogas, as well as (5) advances in the regulatory framework in China.

Keywords： cropping systems     life cycle assessment     North China Plain     balances and nutrient flows     transdisciplinary approach    

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Utility of transbronchial biopsy in the diagnosis of lymphangioleiomyomatosis

Wikenheiser-Brokamp, Lisa R. Young, Sue Byrnes, Francis X. McCormack

Frontiers of Medicine 2012, Volume 6, Issue 4,   Pages 395-405 doi: 10.1007/s11684-012-0231-5

Abstract:

Pulmonary lymphangioleiomyomatosis (LAM) is a rare cystic lung disease that targets women during their reproductive years. A confident diagnosis can often be based on clinical grounds, but diagnostic certainty requires pathological analysis. Although surgical lung biopsy is considered the gold standard for obtaining tissue in patients with diffuse lung disease, it is also associated with higher morbidity and mortality than alternative, less invasive techniques. The objective of our study was to examine the utility of transbronchial biopsy in the diagnosis of LAM. We conducted two online surveys of over 1 000 LAM patients registered with the LAM Foundation who were accessible by email. Transbronchial biopsy specimens were subsequently collected and reviewed by an expert pathologist to validate the diagnosis. We found that transbronchial biopsy has a yield of approximately 60% in patients with LAM. We conclude that transbronchial biopsy may be a safe and effective method for establishing the diagnosis of LAM, obviating the need for surgical lung biopsy in more than half of LAM patients.

Keywords： lymphangioleiomyomatosis     lymphangiomyomatosis     multicystic lung disease     diffuse cystic lung disease     transbronchial biopsy     perivascular epithelioid cell tumor (PEComa)     HMB-45    

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Analysis of Theory of Architecture

Gu Mengchao

Strategic Study of CAE 2007, Volume 9, Issue 11,   Pages 100-102

Abstract:

Starting with the analysis of the definition and concept of the theoryof architecture, the framework of architectural theory and the filling theory innovation, the authorgives his understanding on the framework of architectural theory with Chinese characteristics.

Keywords： theory of architecture     framework of architectural theory     starting point and finishing point ofarchitecturaltheory     innovation in architectural theory    

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Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 522-538 doi: 10.1007/s11708-018-0562-2

Abstract: This paper proposes the use of a signal detection theory (SDT), fuzzy detection theory (FDT), and chi-square

Keywords： thermostats     perceptions     beliefs     signal detection theory (SDT)     fuzzy signal detection theory (FSDT)     chi-square    

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An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Strategic Study of CAE 2004, Volume 6, Issue 6,   Pages 1-8

Abstract: study the properties and the refining laws of the information resources and to establish a unified theory

Keywords： information theory     knowledge theory     intelligence theory     cogmatics    

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An application of game theory in distributed collaborative decision making

Angran XIAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 1,   Pages 85-101 doi: 10.1007/s11465-019-0523-4

Abstract: Hence, we postulate the use of principles from game theory to model the relationships between engineeringA product design and manufacturing scenario is introduced to demonstrate the efficacy of using game theory

Keywords： collaboration     distributed product realization     game theory     digital interface    

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Individualized medicine, health medicine, and constitutional theory in Chinese medicine

Qi Wang

Frontiers of Medicine 2012, Volume 6, Issue 1,   Pages 1-7 doi: 10.1007/s11684-012-0173-y

Abstract: The Chinese constitutional theory developed in the 1970s expresses the principle behind Chinese healthThe Chinese constitutional theory divides the constitution of the Chinese population into nine categoriesThe theory also provides methods and tools for individualized treatment.

Keywords： individualized medicine     health medicine     constitutional theory in Chinese medicine    

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Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy

Yiling Wu

Frontiers of Medicine 2011, Volume 5, Issue 2,   Pages 118-122 doi: 10.1007/s11684-011-0140-z

Abstract: According to the self-discipline of traditional Chinese medicine, vessel-collateral theory was constructedequilibrium ( )” based on the “qi–yin-yang–five elements” coupled with the (nutrients)- (defense) theory, has become the core content of the vessel-collateral theory.connotations of the hypothesis, such as capsule, as the representative drugs of vessel collateral theory

Keywords： vessel-collateral theory     vasculopathy     prevention and treatment    

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Title Author Date Type Operation

Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Journal Article

quality of care for patients with type 2 diabetes in China: findings from the Shanghai Integration Model (SIM

Journal Article

Diversity-oriented synthesis of blue emissive nitrogen heterocycles and their conjugation with carbon nano-onions

Viviana Maffeis, Lisa Moni, Daniele Di Stefano, Silvia Giordani, Renata Riva

Journal Article

Development of temperature-robust damage factor based on sensor fusion for a wind turbine structure

Jong-Woong PARK,Sung-Han SIM,Jin-Hak YI,Hyung-Jo JUNG

Journal Article

Two-dimensional SnS2 nanosheets on Prussian blue template for high performance sodium ion batteries

Sim, Kakui Ma, Zhixiang Huang, Shaozhuan Huang, Ye Wang, Huiying Yang

Journal Article

Design of GPRS Data Terminal Based on S3C2410

Sun Xueyong

Journal Article

Novel perspective for urban water resource management:

Lijie Zhou, Hongwu Wang, Zhiqiang Zhang, Jian Zhang, Hongbin Chen, Xuejun Bi, Xiaohu Dai, Siqing Xia, Lisa

Journal Article

Phosphorus status, use and recycling in a Chinese peri-urban region with intensive animal husbandry and cropping systems

Marco ROELCKE, Lisa HEIMANN, Yong HOU, Jianbin GUO, Qiaoyun XUE, Wei JIA, Anne OSTERMANN, Roxana Mendoza

Journal Article

Utility of transbronchial biopsy in the diagnosis of lymphangioleiomyomatosis

Wikenheiser-Brokamp, Lisa R. Young, Sue Byrnes, Francis X. McCormack

Journal Article

Analysis of Theory of Architecture

Gu Mengchao

Journal Article

Usability perceptions and beliefs about smart thermostats by chi-square test, signal detection theory, and fuzzy detection theory in regions of Mexico

Pedro PONCE, Therese PEFFER, Arturo MOLINA

Journal Article

An Introduction to Cognetics—Unified Theory of Information, Knowledge and Intelligence

Zhong Yixin

Journal Article

An application of game theory in distributed collaborative decision making

Angran XIAO

Journal Article

Individualized medicine, health medicine, and constitutional theory in Chinese medicine

Qi Wang

Journal Article

Construction of the vessel-collateral theory and its guidance for prevention and treatment of vasculopathy

Yiling Wu

Journal Article