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effect of operational parameters on the performance of an anaerobic sequencing batch reactor(AnSbR)treating protein-rich wastewater

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environmental Science and ecotechnology 2024年第1期17卷 89-99页

作者： Zhe Deng Julian Muñoz Sierra Ana lucia Morgado Ferreira Daniel Cerqueda-Garcia Henri Spanjers Jules b.van Lier Delft University of Technology Faculty of Civil Engineering and GeosciencesStevinweg 12628 CNDelftthe Netherlands Veolia Water Technologies Techno Center Netherlands b.V.-biothane Tanthofdreef 212623 EWDelftthe Netherlands KWR Water Research Institute Groningenhaven 7P.O.Box 10723430 BBNieuwegeinthe Netherlands Institute of ecology.A.C Cluster Cientifico y Tecnologico BioMimic®Carretera Antigua a Coatepec 351El Haya91073XalapaVeracruzMexico

Treating protein-rich wastewater using cost-effective and simple-structured single-stage reactors presents several *** this study,we applied an anaerobic sequencing batch reactor(AnSbR)to treat protein-rich wastewater from a *** focused on identifying the key factors influencing the removal of chemical oxygen demand(COD)and the settling performance of the *** AnSbR achieved a maximum total COD removal of 90%,a protein degradation efficiency exceeding 80%,and a COD to methane conversion efficiency of over 70%at organic loading rates of up to 6.2 g COD L^(-1)d^(-1).We found that the variations in both the organic loading rate within the reactor and the hydraulic retention time in the buffer tank had a significant effect on COD *** hydraulic retention time in the buffer tank and the reactor,which determined the ammonification efficiencies and the residual carbohydrate concentrations in the reactor liquid,affected the sludge ***,the genus Clostridium sensu stricto 1,known as protein-and lipids-degraders,was predominant in the *** analysis showed a significant correlation between the core microbiome and ammonification efficiency,highlighting the importance of protein degradation as the governing process in the *** results will provide valuable insights to optimise the design and operation of AnSbR for efficient treatment of protein-rich wastewater.

关键词： Anaerobic digestion Anaerobic sequencing batch reactor (AnSbR) Protein Microbial community Slaughterhouse wastewater

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Digital Library Service Initiative of the Hong Kong Institute of education Library

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上海交通大学学报 2003年第S1期37卷 95-100页

作者： lucia Tsui Sidney Cheng Ivan Chan HKIed Library HKIEd Library HKIEd Library

This paper presented the philosophy and the design concepts of the Hong Kong Institute of education (HKIed) Library Digital Library Service Initiative, focusing on two in house developed digital library components, edIS and edVideo, around its core digital library components of the INNOPAC Integrated Library System, Library Website, electronic resources from vendors. Description on the development of these systems was made.

关键词： edIs edVideo Innopac digital library projects

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enhancing economic sustainability in mature oil fields:Insights from the clustering approach to select candidate wells for extended shut-in

Artificial Intelligence in Geosciences

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Artificial Intelligence in Geosciences 2024年第1期5卷 173-188页

作者： b.Lobut e.Artun Istanbul Technical University Department of Petroleum and Natural Gas Eng.IstanbulTürkiye Sultan Qaboos University Department of Petroleum and Chemical Eng.MuscatOman

Fluctuations in oil prices adversely affect decision making situations in which performance forecasting must be combined with realistic price *** periods of significant price drops,companies may consider extended duration of well shut-ins(*** stopping oil production)for economic *** example,prices during the early days of the Covid-19 pandemic forced operators to consider shutting in all or some of their active *** the case of partial shut-in,selection of candidate wells may evolve as a challenging decision problem considering the uncertainties *** this study,a mature oil field with a long(50+years)production history with 170+wells is *** with similar conditions face many challenges related to economic sustainability such as frequent maintenance requirements and low production *** aimed to solve this decision-making problem through unsupervised machine *** reservoir characteristics at well locations,well production performance statistics and well locations are used as potential features that could characterize similarities and differences among *** reservoir characteristics are measured at well locations for the purpose of describing the subsurface reservoir,well performance consists of volumetric rates and pressures,which are frequently measured during oil *** a multivariate data analysis that explored correlations among parameters,clustering algorithms were used to identify groups of wells that are similar with respect to aforementioned *** the field’s reservoir simulation model,scenarios of shutting in different groups of wells were *** reservoir performance for three years was used for economic evaluation that assumed an oil price drop to$30/bbl for 6,12 or 18 *** of economic analysis were analyzed to identify which group(s)of wells should have been shut-in by also considering the sensitivity to different price *** was o

关键词： Unsupervised learning Clustering Mature oil fields extended shut-in Well classification

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Refolding of reduced/denatured bovine pancreatic insulin with ion-exchange chromatography coupled with MALDI-TOF MS

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Chinese Chemical Letters 2009年第12期20卷 1487-1490页

作者： Cui e. Lin Quan b ai Institute of Modern Separation Science Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education Northwest University Xi'an 710069 China

The refolding of the reduced/denatured insulin from bovine pancreas as the model protein was investigated with weak anion exchange chromatography （WAX） coupled with MALDI-TOF MS. The results indicated that the disulfide bonds almost cannot be formed correctly with the common mobile phase by WAX. However, with the urea gradient elution and in the presence of GSSG/ Cyst as the ratio 1：6 in the mobile phase employed, the disulfide exchange of reduced/denatured insulin can be accelerated resulting in forming the correct three disulfide bonds. The protein refolding efficiency of reduced/denatured insulin can be increased from 3 % to 34%. The effects of urea gradient and the oxidant and reductant groups, such as GSSG/GSH, Cyst, and GSSG/Cyst, on the forming the disulfide bonds of reduced/denatured insulin were investigated in detail. The results were further tested by the separation of the WAX fraction of reduced/denatured insulin with RPLC and MALDI-TOF MS.

关键词： Protein refolding Liquid chromatography Reduced/denaturation Insulin MALDI-TOF MS

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Seasonal variation of selected trace elements in rare endemic species Thuriferous Juniper growing in the Aurès Mountains of Algeria

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Journal of Forestry Research 2017年第2期28卷 249-254页

作者： M.e.bacha b.Nedjimi A.Ararem b.beladel Laboratory of exploration and Valorization of Steppe ecosystem Faculty of Science of Nature and LifeUniversity of DjelfaCite Ain ChihP.O.Box 3117Djelfa 17000Algeria Neutron Activation Analysis Department Nuclear Research Center of BirineP.O.Box 180Ain Oussera 17200Algeria

We used energy dispersive X-ray fluorescence（eDXRF） to determine the seasonal variation of selected trace elements（Cr, Mn, Zn, Cu, Se and Fe） and some potential toxic elements（Cd, Pb and br） in Juniperus thurifera subsp. africana Maire（Cupressaceae） a rare medicinal tree, growing indigenously in Aures Mountains of Algeria. The precision of the results was assessed by analyzing the certified reference material IPe44（WePAL）grass leaves. Results showed J. thurifera was characterized by high Cr and Mn contents. During autumn and winter mineral concentrations were higher in general. The levels of Cr, Se and Mn were higher during autumn and winter than during spring and summer. Zn contents were higher during summer than in other seasons. Cu content did not vary by season. The potential toxic elements in J. thurifera（Pb [ Cd [ br） were below the permissible limits recommended by the Joint WHO/FAO guidelines except for Pb in autumn and winter.

关键词： autumn winter seasonal certified eDXRF endemic subsp dispersive assessed medicinal

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Serum tumor markers not useful in screening patients with pancreatic mucinous cystic lesions associated with malignant changes

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Hepatobiliary & Pancreatic Diseases International 2016年第5期15卷 553-557页

作者： Raffaele Pezzilli lucia Calculli Gianvico Melzi d'eril Alessandra barassi Department of Digestive System Sant’Orsola-Malpighi Hospital Department of Radiology Sant’Orsola-Malpighi Hospital Department of Health Sciences SanPaolo HospitalUniversity of Milan

bACKGROUND: Serum cancer antigen 19-9 (CA19-9) pro-vides additional information about mucinous cystic pancre-atic neoplasm (MPN). This study was undertaken to assess both CA19-9 and carcinoembryonic antigen (CeA) serum concentrations in consecutive patients affected by MPNs and other chronic benign and malignant pancreatic diseases. We also evaluated whether serum CA19-9 and CeA determina-tions provide additional information such as the presence of invasive carcinoma in MPN patients. br> MeTHODS: Serum CA19-9 and CeA from 91 patients with pancreatic diseases were tested by commercially available kits at the time of diagnosis. The upper reference limit of serum CA19-9 was 37 U/mL and that of serum CeA was 3 ng/mL. br> ReSULTS: Thirty-ifve patients was diagnosed with chronic pancreatitis (CP), 32 with MPN, and 24 with pancreatic ductal adenocarcinoma (PDAC) conifrmed histologically. Surgery was carried out in 5 CP patients, in 10 MPN patients (7 of them had severe dysplasia), and 9 PDAC patients. Serum CA19-9 activity was high in 12 (34.3%) CP patients, in 7 (21.9%) MPN patients, and in 12 (50.0%) PDAC patients (P=0.089). High se-rum CeA concentrations were noted in 6 (17.1%) CP patients, in 6 (18.8%) MPN patients, and in 12 (50.0%) PDAC patients (P=0.010). In the 7 MPN patients associated with histological-ly conifrmed severe dysplasia, 3 (42.9%) patients had elevated serum activity of serum CA19-9, and 2 (28.6%) patients had high levels of CeA. br> CONCLUSION: Serum determination of oncological markers is not useful in selecting MPN patients with malignant changes.

关键词： cancer antigen 19-9 carcinoembryonic antigen cystic pancreatic neoplasms chronic pancreatitis pancreatic ductal adenocarcinoma laboratory assessment

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early detection of tomato bacterial canker by reflectance indices

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Information Processing in Agriculture 2022年第2期9卷 184-194页

作者： Gabriela Cordon Carolina Andrade lucia barbara Ana Maria Romero Universidad de buenos Aires Consejo Nacional de Investigaciones Cientı´ficas y Te´cnicasInstituto de Investigaciones Fisiolo´gicas y Ecolo´gicas Vinculadas a la Agricultura(IFEVA)Facultad de Agronomı´aBuenos AiresArgentina Universidad de buenos Aires Facultad de Agronomı´aA´rea de Educacio´n AgropecuariaBuenos AiresArgentina Universidad de buenos Aires Facultad de Agronomı´aCa´tedra de Fitopatologı´aBuenos AiresArgentina

early detection of infected asymptomatic plants could prevent the dissemination of tomatobacterial canker throughout the crop and, thus, reduce associated economic losses. Reflectance spectroscopy has been proposed for the detection of diseases in plants, mainlycaused by foliar fungal pathogens. In contrast, bacterial canker is a vascular disease thatdoes not produce visible foliar symptoms until it is too late to avoid contagion to otherplants. The effects of the disease on the conductivity of the xylem have an impact onthe water content of the leaves;initially, a subtle effect that cannot be assessed with thenaked eye but can be evaluated by reflectance spectroscopy. The objective of this workwas to identify indices, based on the reflectance spectral signature of the plants, for thedetection of tomato plants affected by bacterial canker prior to the appearance of symptoms. To verify that the proposed methodology is applicable to a broad range of tomatogenotypes, two experiments were carried out with different tomato cultivars grown in potsand another on the ground in a greenhouse. Plants were inoculated with the pathogenicbacteria and the reflectance spectrum of the apical leaflet of two leaves per plant wereobtained before symptoms expression;several spectral indices were calculated from thereflectance spectra. Three indices, of the shortwave-infrared zone, allowed the detectionof bacterial canker inoculated plants in a fast and non-destructive way, up to one weekbefore symptoms were visible: Normalized Difference Water Index (NDWI), Simple Ratioof Water Index (SRWI) and Water Index 1 180 (WI1180). Our research demonstrates, forthe first time, the usefulness of spectral indices sensitive to water content for the identifi-cation of diseased plants. These indices arise as a promising tool for the early detection ofvascular plant diseases, that could be integrated into sustainable management plans.

关键词： Clavibacter michiganensis subsp. michiganensis bacterial wilt Reflectance indices Solanum lycopersicum L

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Current Zoology 2024年第1期70卷 1-12页

作者： lucia V.Sommaro Juan J.Martinez Marina b.Chiappero Andrea R.Steinmann Cristina N.Gardenal JoséW.Priotto Laboratorio de ecologia evolutiva y biogeografia Instituto de Ecorregiones Andinas(INECoA)Universidad Nacional de Jujuy-Consejo Nacional de Investigaciones Cientificas y Tecnicas(CONICET)San Salvador de JujuyJujuyArgentina Instituto de Diversidad y ecologia Animal(IDeA) Consejo Nacional de Investigaciones Cientificas y Técnicas(CONICET)and Universidad Nacionalde CordobaCordobaArgentina Catedra de Genética de Poblaciones y evolucion Facultad de Ciencias ExactasFisicas y NaturalesUniversidad Nacional de CordobaCordobaArgentina Grupo de Investigaciones en ecologia Poblacional y Comportamental(GIePCO) Instituto de Ciencias de la TierraBiodiversidad y Ambiente(ICBiA)Universidad Nacional de Rio Cuarto-Consejo Nacional de Investigaciones Cientificas y Técnicas(CONICET)Rio CuartoCordobaArgentina

The sex-biased dispersal and kinship dynamics are important factors shaping the spatial distribution of individuals and are key parameters affecting a variety of ecological and evolutionary ***,we studied the spatial distribution of related individuals within a population of corn mice Calomys musculinus in a seasonal cycle to infer dispersal *** sampling was carried out from spring 2005 to winter 2006 in field borders of intensively managed *** data from 346 individuals with 9 microsatellites showed spatial genetic structure was weak for males,but not for *** results indicate a complex spatial kinship dynamic of related females across all ***,contrary to our expectations,dispersal distances decrease with the increase of the population ***,male dispersal distances were greater when population abundance increased and thus the availability of active *** disperse greater distances to mate and sire offspring with distant females as a possible inbreeding avoidance *** study shows that *** is capable of much greater scattering distances than previously reported and that dispersal occurs fluidly and without barriers across the *** indirect benefit of dispersal on individual fitness could be related to relaxing the competition in the natal area and increasing the mating *** study highlights the value of combining genetic relatedness,fieldwork observations,and behavioral data to estimate dispersal at a fine geographical scale.

关键词： dispersal distances kinship dynamics microsatellite small mammals spatial autocorrelation

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Studies on Youth Radio Listening Habits in the Convergence era in Lesotho

Studies on Youth Radio Listening Habits in the Convergence E...

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作者： Hlompho lucia Letsie 中国传媒大学

学位级别：硕士

当前,融合时代广播收听习惯和内容偏好的巨大变化凸显了研究莱索托青年听众广播收听习惯和广播规制的实践和理论问题的必要性与紧迫性。为此,本文探讨媒介融合时代莱索托青年的收听习惯的变化,尤其是发掘现在与以前的广播收听习惯有何... 详细信息

当前,融合时代广播收听习惯和内容偏好的巨大变化凸显了研究莱索托青年听众广播收听习惯和广播规制的实践和理论问题的必要性与紧迫性。为此,本文探讨媒介融合时代莱索托青年的收听习惯的变化,尤其是发掘现在与以前的广播收听习惯有何不同。基于媒介融合进程的不断推进,本研究基于使用和满足理论以及媒体依赖理论并采用运用封闭式与开放式调查问卷法以及开放式深度访谈等混合研究法,分析当代青年互联网广播、数字广播、地面无线广播收听和双重收听行为,探讨青年的收听偏好变化、行为意图、使用满足以及媒介依赖性问题,进而对莱索托广播规制提出一些建议。研究发现,首先,莱索托青年广播收听习惯发生了变化,其中67%的受访者早上用手机收听广播(中午则为45%)。而且58%的受访者通过手机APP收听,一半受访者偏好在汽车收音机上收听。其次,莱索托的广播电台亟需向数字广播转型,以便散居国外的巴索托人能够收听本国信息并与世界沟通。第三,亟待对当代广播听众行为习惯变化进行研究,以改革规制和新兴广播服务政策,使其与听众生活方式的改变相吻合。而且,媒介融合的规制和指导方针须进行彻底改革,以应对广播的变化,因为一些广播电台使用免费的在线网站进行音频流。最后,本文建议对莱索托的广播收听习惯转变予以进一步研究,以推动政策改革战略向前发展,从而使广播规制适应莱索托听众变化和广播行业转型。

关键词：收听习惯融合莱索托青年

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effects of nano-voids and nano-cracks on the elastic properties of a host medium: xfem modeling with level-set function and free surface energy

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Acta Mechanica Sinica 2019年第4期35卷 799-811页

作者： b.e. Hachi D. Hachi M. Haboussi Laboratoire de Développement en Mécanique et Matériaux (LDMM) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire d’Automatique Appliquée et Diagnostics Industriels (LAADI) Université de Djelfa PB 3117 Djelfa Algérie Laboratoire des Sciences des Procédés et des Matériaux (LSPM) Université Paris 13 UPR 3407 CNRS Paris France

This work deals with the influences of nano-heterogeneities in the form of voids/cavities or cracks on the elastic (please confirm which word is correct. effective or elastic? According to the title of paper, I choose elastic.) properties of a host medium. With a relatively large ratio of apparent-surface to volume and particularly strong physical interactions with the surrounding medium at nano-scale, nano-heterogeneities can potentially affect the elastic(effective or elastic?) properties of the parent medium (matrix) containing them in a significant manner. This has been reported by various theoretical and experimental studies, some of them are discussed in the present paper. To describe the positive (reinforcement) or negative (degradation) effect of the nano-heterogeneities from the modeling perspective, it is necessary to take into account the energy of interfaces/surfaces between nano-heterogeneities and the matrix which, by the fact of the relatively large extent of their apparent surface and their strong physical interaction with their neighborhood, can no longer be neglected compared to those of the volume energy. Thus, to account for the effects of interfaces/surfaces in a nanostructured heterogeneous medium, the coherent interface model is considered in the present investigation within a periodic homogenization procedure. In this interface/surface model, the displacement vector is assumed to be continuous across the interface while the stress vector is considered to be discontinuous and satisfying the Laplace-Young equations. To solve these equations coupled to the classical mechanical equilibrium problem, a numerical simulation tool is developed in a two-dimensional (2D) context using the eXtended Finite element Method (XFeM) and the Level-Set functions. The developed numerical tool is then used to carry out a detailed analysis about the effect of nano-heterogeneities on the overall mechanical properties of a medium. The nano-heterogeneities are present

关键词： Interface/Surface energy XFeM Level-Set function Periodic homogenization Nano-voids/Nano-cavities Nano-cracks Nano-inclusions/Nano-heterogeneities

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