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Immobilization and characterization of the Lactarius deliciosus mycelia-embedded polylysine-alginate beads and their decolorization performance

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 2001-2013页

作者： Yiwen Jin Jie Yuan caixia liu Jiacheng Sun Youbin liu Zhifeng Ding Qingxi Wu School of Life Sciences Anhui UniversityHefei 230601China Key Laboratory of Eco-engineering and Biotechnology of Anhui Province and Anhui Key Laboratory of Modern Biomanufacturing Hefei 230601China Department of Chemistry The University of Western OntarioOntario N6A 5B7Canada

Liquid fermented fungal mycelia with decolorization capability have potential applications in scale-up. In this work, the Lactarius deliciosus mycelia were immobilized on ε-polylysine-alginate beads, and the decolorization effects of ε-polylysine-alginate beads were demonstrated along with Coomassie brilliant blue G-250 as a model dye. Morphology observation confirmed the beads had an exterior film and interior capsule with honeycomb microstructures suitable for mycelia growth. It was manifested that the maximum decolorization efficiency for mycelia was 98.5% at a removal rate of 0.68 mg·L^(-1)·h after 3 days. In comparison, the decolorization efficiency of the immobilized mycelia reached the maximum value of 97.3% at a removal rate of 6.1 mg·L^(-1)·h after 8 h. The enzyme activities of lignin peroxidase and laccase tested in the immobilized mycelia were significantly higher than in that of the free ones, such as the lignin peroxidase had the highest enzyme activity of 77.6 ± 7.4 U·L^(-1) in the former, while of 27.4 ± 8.7 U·L^(-1) in the latter. The immobilization of L. deliciosus mycelia could improve the decolorization of Coomassie brilliant blue G-250 efficiently. The prepared ε-polylysine-alginate beads embedded with L. deliciosus mycelia have very good reusability and a great potential in decolorizing analog dyes.

关键词： Lactarius deliciosus mycelia immobilization decolorization polylysine-alginate beads Coomassie brilliant blue G-250

A proactive defense mechanism for mobile communication user data

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Science China(Information Sciences) 2018年第10期61卷 266-268页

作者： caixia liu Xinsheng JI Jiangxing WU Xiao QIN The National Digital Switching System Engineering & Technological R&D Center Department of Computer Science and Software Engineering Samuel Ginn College of EngineeringAuburn University

Dear editor,Several studies have recently reported on major vulnerabilities in the Signaling System No.7 (SS7)used in mobile networks [1, 2]. The reported vulnerabilities and security issues would lead to the illegal acquisition and tampering of mobile communication user data, known as cellphone user data. The cellphone user data contain important information such as identity identification, location identification, security parameter-set. Due to

关键词： A proactive defense mechanism for mobile communication user data MSISDN

Development of a monitoring system for Huangjiu storage based on electrical conductivity

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Food Quality and Safety 2023年第3期7卷 483-491页

作者： Jian Hu Shuangping liu Mujia Nan caixia liu Xiao Han Jian Mao National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing School of Food Science and TechnologyJiangnan UniversityWuxiChina Shanghai Jinfeng Wine Co. Ltd.ShanghaiChina Basic Department University of Tibetan MedicineLhasaChina Jiangnan University(Shaoxing)Industrial Technology Research Institute ShaoxingChina

In order to quickly detect the rancidification of Huangjiu in pottery jars,this study developed a fast detection method based on the principle of electrical conductivity changes caused by microbial *** change in total acid in Huangjiu was positively correlated with the increase of electrical *** method was applied to an online monitoring system for Huangjiu storage in stainless steel *** the electrical conductivity exceeds the normal fluctuation range(mean+3 standard deviations)of previous data,the monitoring system recognizes microbial *** optimizing the conductivity-temperature compensation coefficient and conductivity statistical method,the standard deviation of the method was reduced and the sensitivity of microbial pollution monitoring was *** ranges of conductivity and compensation coefficient of common types of Huangjiu were *** in conductivity measurements due to environmental factors was minimised through the synchronous comparison of conductivity data for multiple tanks of *** standard deviation,which indicates the fluctuation range of the system,decreased from 143 to 2μS/*** monitoring system was then applied in Huangjiu storage tanks with capacities of 60 t and 300 *** the comparison of conductivity data change,the abnormal signals caused by microbial contamination during the storage of Huangjiu were found over ***,through offline detection of total acid in Huangjiu,the effectiveness of microbial contamination online detection was verified.

关键词： Huangjiu online monitoring electrical conductivity rancidification microbial contamination

Tunable white-light emission of lanthanide(Ⅲ) hybrid material based on hectorite

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Chinese Chemical Letters 2018年第2期29卷 321-324页

作者： Jiahui Ma Tianren Wang caixia liu Huanrong Li Hebei Provincial Key Lab of Green Chemical Technology and High Efficient Energy Saving School of Chemical Engineering and Technology Hebei University of Technology Tianjin 300130 China

In this work, we present novel trivalent lanthanide ions（Ln^3＋）-based luminescent hybrid materials, in which the organic ligands are covalently grafted on the hectorite templates and the Ln^3＋ ions can be well immobilized by the ligands through coordination bond. The hybrid materials exhibit tunable emission colors by varying the molar ratio of Eu^3＋ to Tb^3＋, and the one with Eu^3＋：Tb^3＋=1：1 exhibits excellent coordinate of（0.327, 0.328） located in the ＂white region＂ of the CIE 1931 chromaticity diagram（under300 nm UV illumination）. These properties make the hybrid composites suitable for fabricating optoelectronic devices such as full-color displays and white LED.

关键词： Hectorite Lanthanide Covalent bond Luminescence White light

Research progress in the effects of pectus excavatum on cardiac functions

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World Journal of Pediatric Surgery 2020年第2期3卷 36-41页

作者： caixia liu Yunhong Wen Department of Cardiothoracic Surgery Children's Hospital of ShanxiTaiyuanChina

Background Pectus excavatum,the most common chest wall deformity in children,accounts for nearly 90%of congenital malformations of chest ***,both parents and doctors paid more attention to the influence of this deformity on patient appearance and *** deeper studies of pectus excavatum,researchers found that it also affected cardiac *** purpose of this review aims to present recent research progress in the effects of pectus excavatum on cardiac *** sources Based on aspects of CT,ultrasound cardiography(UCG)and MRI,all the recent literatures on the influence of pectus excavatum on cardiac function were searched and *** Moderate and severe pectus excavatum did have a negative effect on cardiac *** rotation angle,cardiac compression index,right atrial and tricuspid annulus size,septal motion and myocardial strain are relatively effective indexes to evaluate cardiac *** Pectus excavatum did have a negative effect on cardiac function;so surgeons should actively diagnose and treat such patients in clinical ***,further research is needed on to explore the measures and indicators that can reflect the changes of cardiac function in patients objectively,accurately,effectively and timely.

关键词： cardiac doctor congenital

Insight into the Alkali Resistance Mechanism of CoMnHPMo Catalyst for NH_(3) Selective Catalytic Reduction of NO

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Transactions of Tianjin University 2024年第4期30卷 324-336页

作者： Kaixin Wang Yunchong Wang Zongxiang Yang Xinyue Wang caixia liu Qingling liu Tianjin Key Laboratory of Indoor Air Environmental Quality Control School of Environmental Science and EngineeringTianjin UniversityTianjin 300350China State Key Laboratory of Engines Tianjin UniversityTianjin 300350China

The existence of alkali metals in fl ue gases originating from stationary sources can result in catalyst deactivation in the low-temperature selective catalytic reduction(SCR)of nitrogen oxides(NO_(x)).It is widely accepted that alkali metal poisoning causes damage to the acidic sites of ***,in this study,a series of CoMn catalysts doped with heteropolyacids(HPAs)were prepared using the coprecipitation *** these,CoMnHPMo exhibited superior catalytic performance for SCR and over 95%NO_(x) conversion at 150-300􁕑.Moreover,it exhibited excellent catalytic activity and stability after alkali poisoning,demonstrating outstanding alkali metal *** characterization indicated that HPMo increased the specifi c surface area of the catalyst,which provided abundant adsorption sites for NO_(x) and NH_(3).Comparing catalysts before and after poisoning,CoMnHPMo enhanced its alkali metal resistance by sacrifi cing Brønsted acid sites to protect its Lewis acid *** situ DRIFTS was used to study the reaction pathways of the *** results showed that CoMnHPMo maintained high NH_(3) adsorption capacity after K poisoning and then reacted rapidly with NO intermediates to ensure that the active sites were not ***,SCR performance was ensured even after alkali metal *** sum-mary,this research proposed a simple method for the design of an alkali-resistant NH_(3)-SCR catalyst with high activity at low temperatures.

关键词： NH3-SCR Alkali resistance Phosphomolybdic acid CoMn

Fine-resolution mapping of the circumpolar Arctic Man-made impervious areas(CAMI)using sentinels,OpenStreetMap and ArcticDEM

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Big Earth Data 2022年第2期6卷 196-218页

作者： Xiaoqing Xu Chong liu caixia liu Fengming Hui Xiao Cheng Huabing Huang School of Geospatial Engineering and Science Sun Yat-Sen UniversityGuangzhouP.R.China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) ZhuhaiP.R.China State Key Laboratory of Remote Sensing Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingP.R.China

Man-made impervious areas map is of great demand in environmen-tal and urbanization studies since impervious areas are considered as a key indication of urbanization,especially for circumpolar ***,to date,finer resolution and spatially continuous imper-vious areas information remains scarce in the *** this study,we developed an accurate and complete circumpolar Arctic Man-made impervious areas(CAMI)map at a resolution of 10 m by combining Sentinel-1 C-band Synthetic Aperture Radar,Sentinel-2 multispectral images,OpenStreetMap,and ArcticDEM via Google Earth Engine platform.A random forest classifier model was trained and used to generate corresponding impervious areas map for the year *** evaluation results suggested that CAMI was the most accurate with an overall accuracy of 86.36%and kappa coefficient of 70.73%as against the three existing impervious areas *** on the generated map and OpenStreetMap,we estimated that total imper-vious areas area in the Arctic has achieved 807.80 km2,of which roads,industrial and resident land were three major land use types,accounting for 54.08%,17.85%and 10.34%,*** CAMI map will support for new application and provide advanced insight into the infrastructure vulnerability evaluation and environmental sustainability in the Arctic.

关键词： Artificial impervious areas 10-m spatial resolution map random forest northern Arctic treeline Google Earth Engine(GEE)

Non-agricultural Population, Employment and Land:An Econometric Study in an Integrated Framework

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Chinese Journal of Population,Resources and Environment 2009年第1期7卷 65-75页

作者： Hu Weiyan Zhang Anlu liu caixia College of Land Management Huazhong Agricultural University Wuhan Hubei 430070 China Center of Land Banking in Wuhan City Wuhan Hubei 430015 China

Abstract： his paper explored the relationships among nonagricultural population, employment and land in an integrated framework, taking account of rural-urban land conversion into Carlino-Mills＇s model on the regional growth. Two-stage-leastsquares and ordinary-least-squares were employed. Recent data for district （grade） cities in China （from 1999 to 2005） were used. Our results showed that： first, urban population influenced non-agricultural employment, and vice versa, but the evidence that non-agricultural employment influenced urban population was stronger than the evidence that urban population influenced non-agricultural employment; second, urban population and non-agricultural employment both influenced ruralurban land conversion, but the evidence that urban population influenced rural urban land conversion was more stronger than the evidence that non-agricultural employment did. We also found that： first, the employment from the secondary industry influenced urban population in a positive way, and vice versa, but the employment from the tertiary industry influenced urban population in a negative way, and vice versa; second, the employment from the secondary industry influenced rural-urban land conversion in a positive way, but the employment from the tertiary industry influenced rural-urban land conversion in a negative way. We can conclude that the key of urbanization is to speed up the process of non-agricultural employment, especially the employment from the tertiary industry, which might promote non-agricultural population, employment and land harmoniously.

关键词： non-agricultural population non-agricultural employment non-agricultural land

Re-estimating the changes and ranges of forest biomass carbon in China during the past 40 years

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Forest Ecosystems 2019年第4期6卷 396-413页

作者： Xiaolu Zhou Xiangdong Lei caixia liu Huabing Huang Carl Zhou Changhui Peng Research Center for Ecological Forecasting and Global Change Northwest A&F UniversityYangling 712100China Ecological Modeling and Carbon Science Department of Biology ScienceUniversity of Quebec at MontrealMontrealQC H3C 3P8Canada Institute of Forest Resource Information Techniques Chinese Academy of ForestryBeijing 100091China State Key Laboratory of Remote Sensing Science Institute of Remote Sensing and Digital EarthChinese Academy of SciencesBeijing 100101China Faculty of Health Sciences University of OttawaOttawaON K1N 6N5Canada.

Background: In recent decades the future of global forests has been a matter of increasing concern, particularly in relation to the threat of forest ecosystem responses under potential climate change. To the future predictions of these responses, the current forest biomass carbon storage(FCS) should first be clarified as much as possible,especially at national scales. However, few studies have introduced how to verify an FCS estimate by delimiting the reasonable ranges. This paper addresses an estimation of national FCS and its verification using two-step process to narrow the uncertainty. Our study focuses on a methodology for reducing the uncertainty resulted by converting from growing stock volume to above-and below-ground biomass(AB biomass), so as to eliminate the significant bias in national scale ***: We recommend splitting the estimation into two parts, one part for stem and the other part for AB biomass to preclude possible significant bias. Our method estimates the stem biomass from volume and wood density(WD), and converts the AB biomass from stem biomass by using allometric ***: Based on the presented two-step process, the estimation of China’s FCS is performed as an example to explicate how to infer the ranges of national FCS. The experimental results demonstrate a national FCS estimation within the reasonable ranges(relative errors: + 4.46% and-4.44%), e.g., 5.6–6.1 PgC for China’s forest ecosystem at the beginning of the 2010 s. These ranges are less than 0.52 PgC for confirming each FCS estimate of different periods during the last 40 years. In addition, our results suggest the upper-limits by specifying a highly impractical value of WD(0.7 t·m-3) on the national scale. As a control reference, this value decides what estimate is impossible to achieve for the FCS ***: Presented methodological analysis highlights the possibility to determine a range that the true value could be located in. The two-ste

关键词： Allometric equation Forest carbon Stem-biomass proportion Volume-derived method Wood density