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Sea salt bittern-driven forward osmosis for nutrient recovery from black water: A dual waste-to-resource innovation via the osmotic membrane process

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Frontiers of Environmental Science & Engineering 2020年第2期14卷 197-206页

作者： Wenchao Xue May Zaw xiaochan an Yunxia Hu Allan Sriratana Tabucanon Department of Energy Environment and Climate ChangeSchool of EnvironmentResources and DevelopmentAsian Institute of TechnologyP.O.Box 4Klong LuangPathumthani 12120Thailand State Key Laboratory of Separation Membranes and Membrane Processes School of Materials Science and EngineeringTianjin Polytechnic UniversityTianjin 300387China Faculty of Environment and Resource Studies Mahidol UniversityNakhon Pathom 71370Thailand

A dual“waste-to-resource”innovation in nutrient enrichment and recovery from domestic black water using a sea salt bittern(SSB)-driven forward osmosis(FO)process is proposed and *** performance of SSB as a“waste-to-resource”draw solution for FO was first evaluated.A synthetic SSB-driven FO provided a water flux of25.67±3.36 L/m2 h,which was 1.5-1.7 times compared with synthetic seawater,1 M NaCl,and 1M *** compromised performance regarding reverse solute selectivity was *** compensation,the enhanced reverse diffusion of Mg+suggested superior potential in terms of recovering nutrients in the form of struvite *** nutrient enrichment was performed using both the pre-filtered influent and effluent of a domestic septic *** 80%of phosphate-P recovery was achieved from both low-and high-strength black water at a feed volume reduction up to 80%^90%.With an elevated feed pH(~9),approximately 60%-85%enriched phosphate-P was able to be recovered in the form of precipitated *** the enrichment performance of total Kjeldahl nitrogen(TKN)largely differed depending on the strength of black *** concentration factor(i.e.,3-folds)and retention(>60%)of TKN was obtained in the high-nutrient-strength black water at a feed volume reduction of 80%,in comparison with a weak TKN enrichment observed in low-strength black *** results suggested a good potential for nutrient recovery based on this dual“waste-to-resource”FO system with proper management of membrane cleaning.

关键词： Forward osmosis Sea salt bittern Black water Nutrient recovery pH

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Changes in soil temperature and water content under mobile soil steam disinfection

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International Journal of Agricultural and Biological Engineering 2021年第3期14卷 140-147页

作者： Zhenjie Yang xiaochan Wang Muhammad Ameen College of Engineering Nanjing Agricultural UniversityNanjing 210031China College of Mechanical and Electrical Engineering Yunnan Agricultural UniversityKunming 650201China

The soil steam injection method is one of the most effective disinfection methods,and the determination of the steam pipe structure parameters is very *** steam capillary diameter(SCD)affects the steam flow field in each pipe,which in turn affects the steam changes in the soil flow range and soil temperature(ST).Larger SCD would make lower ST in clay loam,silt loam,and sandy clay *** effectiveness of an SCD of 10 mm was verified by a mobile disinfection test at walking speeds of 10 cm/min and 30 cm/min under soil water content(SWC)of 15%and 35%,*** results showed that when the walking speed was 10 cm/min,the initial SWC was proportional to the ***,when the walking speed was 30 cm/min,the law was exactly the opposite;that is,the initial water content is inversely proportional to the *** research can provide a theoretical research foundation for increasing soil temperature for efficient soil steam disinfection.

关键词： soil steam disinfection steam capillary diameter steam capillary vent soil temperature soil water content

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Geographic Variation in the Skull Morphometry of Four Populations of Batrachuperus karlschmidti(Urodela:Hynobiidae)

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Asian Herpetological Research 2020年第3期11卷 194-204页

作者： Qiangqiang LIU Jianli XIONG Jianping GOU xiaochan GAO College of Animal Science and Technology Henan University of Science and TechnologyLuoyangHenanChina

Geographic variation of morphology is an important topic of evolutionary biology,and research on geographic variation can provide insights on the formation,evolution,and adaptation of species and *** vertebrate skull is a developmentally and functionally complex morphological structure with multiple functions,that is susceptible to vary according to selection *** this study,geographic variations in skull morphology of Batrachuperus karlschmidti from four different geographic populations(Shade,Gexi,Shangluokema,and Xinduqiao)were examined via geometric *** significant differences were found among these populations with regard to skull size;however,significant variation was found in skull *** most notable shape changes are the relative sizes and positions of the frontal,maxilla,pterygoid,and *** shape changes were not related to ***,due to limitation of sample populations and size,the results of this study need to be further verified by more sample populations and individuals in the *** results of this study contribute to our knowledge about these aspects of morphological variability in this species as well as in hynobiid salamanders.

关键词： allometry geographic variation hynobiid salamander skull size and shape

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Chinese Science Bulletin 2010年第8期55卷 701-704页

作者： TANG xiaochan ZHOU PanPan QIU WenYuan Department of Chemistry State Key Laboratory of Applied Organic Chemistry Lanzhou University Lanzhou 730000 China

In this paper,we propose a new 4D graphical representation of DNA primary sequences based on the Z-curve *** advantage of our approach is that it has the similar biological significance with the Z-curve,and it does not lose any biological information of the *** geometrical centers of the 4D graphical representation of DNA sequences are used as the numerical characterizations,and the examination of similarities/dissimilarities about the coding sequences of the first exon of β-globin genes of eleven different species shows that this approach can provide satisfactory results.

关键词： DNA序列图形表示相似性四维 β-珠蛋白基因生物学意义作者编码序列

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Internet of Things for the Future of Smart Agriculture: A Comprehensive Survey of Emerging Technologies

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IEEE/CAA Journal of Automatica Sinica 2021年第4期8卷 718-752页

作者： Othmane Friha Mohamed Amine Ferrag Lei Shu Leandros Maglaras xiaochan Wang Networks and Systems Laboratory University of Badji Mokhtar-AnnabaAnnaba 23000Algeria Department of Computer Science Guelma UniversityGulema 24000Algeria College of Engineering Nanjing Agricultural UniversityNanjing 210095China School of Engineering University of LincolnLincoln LN67TSUK School of Computer Science and Informatics De Montfort UniversityLeicester LE19BHUK Department of Electrical Engineering Nanjing Agricultural UniversityNanjing 210095China

This paper presents a comprehensive review of emerging technologies for the internet of things(IoT)-based smart *** begin by summarizing the existing surveys and describing emergent technologies for the agricultural IoT,such as unmanned aerial vehicles,wireless technologies,open-source IoT platforms,software defined networking(SDN),network function virtualization(NFV)technologies,cloud/fog computing,and middleware *** also provide a classification of IoT applications for smart agriculture into seven categories:including smart monitoring,smart water management,agrochemicals applications,disease management,smart harvesting,supply chain management,and smart agricultural ***,we provide a taxonomy and a side-by-side comparison of the state-ofthe-art methods toward supply chain management based on the blockchain technology for agricultural ***,we present real projects that use most of the aforementioned technologies,which demonstrate their great performance in the field of smart ***,we highlight open research challenges and discuss possible future research directions for agricultural IoTs.

关键词： Agricultural internet of things(IoT) internet of things(IoT) smart agriculture smart farming sustainable agriculture

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Enhanced photocatalytic activity by the construction of a TiO2/carbon nitride nanosheets heterostructure with high surface area via direct interracial assembly

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Nano Research 2017年第7期10卷 2193-2209页

作者： Zili Xu Chuansheng Zhuang Zhijuan Zou Jingyu Wang xiaochan Xu Tianyou Peng Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education) School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Wuhan 430074 China College of Chemistry and Molecular Sciences Wuhan University Wuhan 430072 China

A TiO2 heterostructure modified with carbon nitride nanosheets （CN-NSs） has been synthesized via a direct interfacial assembly strategy. The CN-NSs, which have a unique two-dimensional structure, were favorable for supporting TiOa nanoparticles （NPs）. The uniform dispersion of TiO2 NPs on the surface of the CN-NSs creates sufficient interfacial contact at their nanojunctions, as was confirmed by electron microscopy analyses. In comparison with other reported metal oxide/CN composites, the strong interactions of the ultrathin CN-NSs layers with the TiO2 nanoparticles restrain their re-stacking, which results in a large specific surface area of 234.0 m2.g-1. The results indicate that the optimized TiOJCN-NSs hybrid exhibits remarkably enhanced photocatalytic efficiency for dye degradation （with k of 0.167 min-1 under full spectrum） and Ha production （with apparent quantum yield -- 38.4% for A = 400 ＋ 15 nm monochromatic light）. This can be ascribed to the improved surface area and quantum efficiency of the hybrid, with a controlled ratio that reaches the appropriate balance between producing sufficient nanojunctions and absorbing enough photons. Furthermore, based on the identification of the main active species for photodegradation, and the confirmation of active sites for H2 evolution, the charge transfer pathway across the TiO2/CN-NSs interface under simulated solar light is proposed.

关键词： carbon nitride nanosheets TiO2 hybrid photocatalyst interfacial assembly high surface area

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Optimized Target-AID system efficiently induces single base changes in zebrafish

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Journal of Genetics and Genomics 2018年第4期45卷 215-217页

作者： xiaochan Lu Yunxing Liu Guanrong Yan Song Li Wei Qin Shuo Lin State Key Laboratory of Chemical Oncogenomics Key Laboratory of Chemical Genomics Peking University Shenzhen Graduate School Department of Molecular Cell and Development Biology University of CaliforniaLos Angeles

CRISPR-Cas system has been widely adapted as a platform for genome editing in various eukaryotic organisms, including zebrafish（Cong et al., 2013; Hwang et al., 2013）. One of the important applications of CRISPR-Cas... 详细信息

关键词： AID Optimized Target-AID system efficiently induces single base changes in zebrafish Target

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Response characteristics and efficiency of variable rate fertilization based on spectral reflectance

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International Journal of Agricultural and Biological Engineering 2018年第6期11卷 152-158页

作者： Man Chen Zhenjie Yang xiaochan Wang Yinyan Shi Yu Zhang College of Engineering Nanjing Agricultural UniversityNanjing 210031China Nanjing Research Institute for Agricultural Mechanization Ministry of AgricultureNanjing 210014China Jiangsu Province Engineering Laboratory for Modern Facilities Agricultural Technology and Equipment Nanjing 210031China

The key technical problem of variable rate fertilization system based on spectrum information was precise variable fertilization in certain area according to the acquired spectrum *** fertilizing is a critical problem in most of current fertilizer *** model was built and analyzed in this study to improve the *** tests were conducted on different wheat breeds and the results were *** tests showed that variable rate fertilization had obvious hysteresis phenomenon with the maximum lag distance of 3.82 m,the minimum lag distance of 1.73 m and average of 3.06 *** phenomenon of the variable rate fertilization system was obviously decreased when implanting a correction time of 2.04 s with the maximum lag distance of 0.61 *** effects varied by different wheat *** rate fertilization had an advantage of improving spatial differences of Yangmai-23,and the spatial variability of which decreased by 14.23%.In the small test area,the amount of fertilizer in Zhenmai-168 decreased by 2.84 kg,while the amount of which in Yangmai-23 increased by 3.83 *** of Zhenmai-168 in small area was lower than that in traditional pattern,but the condition of Yangmai-23 was on the *** information for increasing performance of fertilization in variable rate fertilization system was provided in this paper.

关键词： variable rate fertilization fertilization lag calibration fertilization efficiency winter wheat

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Extrapolating neurogenesis of mesenchymal stem/stromal cells on electroactive and electroconductive scaffolds to dental and oral-derived stem cells

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International Journal of Oral Science 2022年第2期14卷 123-131页

作者： Boon Chin Heng Yunyang Bai xiaochan Li Xuehui Zhang Xuliang Deng Central Laboratory Peking University School and Hospital of StomatologyBeijingChina School of Medical and Life Sciences Sunway UniversitySubang JayaSelangor Darul EhsanMalaysia Department of Geriatric Dentistry Peking University School and Hospital of StomatologyBeijingChina Department of Dental Materials&Dental Medical Devices Testing Center Peking University School and Hospital of StomatologyBeijingChina National Engineering Laboratory for Digital and Material Technology of Stomatology NMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials&Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijingChina

The high neurogenic potential of dental and oral-derived stem cells due to their embryonic neural crest origin,coupled with their ready accessibility and easy isolation from clinical waste,make these ideal cell sources for neuroregeneration ***,these cells also have high propensity to differentiate into the osteo-odontogenic *** strategy to enhance neurogenesis of these cells may be to recapitulate the natural physiological electrical microenvironment of neural tissues via electroactive or electroconductive tissue engineering ***,to date,there had been hardly any such studies on these *** relevant scientific information comes from neurogenesis of other mesenchymal stem/stromal cell lineages(particularly bone marrow and adipose tissue)cultured on electroactive and electroconductive scaffolds,which will therefore be the focus of this *** there are larger number of similar studies on neural cell lines(***12),neural stem/progenitor cells,and pluripotent stem cells,the scientific data from such studies are much less relevant and less translatable to dental and oral-derived stem cells,which are of the mesenchymal *** extrapolation work is needed to validate that electroactive and electroconductive scaffolds can indeed promote neurogenesis of dental and oral-derived stem cells,which would thus facilitate clinical applications in neuroregeneration therapy.

关键词： mesenchymal conductive neural

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The circadian clock in enamel development

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International Journal of Oral Science 2024年第3期16卷 371-380页

作者： Ke Wu xiaochan Li Yunyang Bai Boon Chin Heng Xuehui Zhang Xuliang Deng Department of Geriatric Dentistry Peking University School and Hospital of StomatologyBeijingChina 4th Division Peking University School and Hospital of StomatologyBeijingChina Department of Dental Materials&Dental Medical Devices Testing Center Peking University School and Hospital of StomatologyBeijingChina National Engineering Research Center of Oral Biomaterials and Digital Medical Devices NMPA Key Laboratory for Dental MaterialsBeijing Laboratory of Biomedical Materials&Beijing Key Laboratory of Digital StomatologyPeking University School and Hospital of StomatologyBeijingChina Oral Translational Medicine Research Center Joint Training base for Shanxi Provincial Key Laboratory in Oral and Maxillofacial Repair Reconstruction and Regeneration The First People’s Hospital of Jinzhong JinzhongChina

Circadian rhythms are self-sustaining oscillations within biological systems that play key roles in a diverse multitude of physiological *** circadian clock mechanisms in brain and peripheral tissues can oscillate independently or be synchronized/disrupted by external *** enamel is a type of mineralized tissue that forms the exterior surface of the tooth *** Retzius lines are readily observable microstructures of mature tooth enamel that indicate the regulation of amelogenesis by circadian *** enamel is formed by enamel-forming cells known as ameloblasts,which are regulated and orchestrated by the circadian clock during *** review will first examine the key roles of the circadian clock in regulating ameloblasts and *** physiological processes are involved,including gene expression,cell morphology,metabolic changes,matrix deposition,ion transportation,and ***,the potential detrimental effects of circadian rhythm disruption on enamel formation are *** rhythm disruption can directly lead to Enamel Hypoplasia,which might also be a potential causative mechanism of amelogenesis ***,future research trajectory in this field is *** is hoped that this review will inspire more intensive research efforts and provide relevant cues in formulating novel therapeutic strategies for preventing tooth enamel developmental abnormalities.

关键词： enamel crown exterior

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