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Aerial pollutants on a pig farm in peri-urban Beijing,China

International Journal of Agricultural and Biological Engineering 2013年第1期6卷 36-47页

作者： roxana mendoza huaitalla Eva Gallmann Liu Xuejun Eberhard Hartung Institute of Agricultural Engineering University of HohenheimStuttgart70599Germany College of Agricultural Resources and Environmental Sciences China Agricultural UniversityBeijing 100094China Institute of Agricultural Engineering Christian-Albrechts-University KielKiel24098Germany

The study was carried out to evaluate the airborne gases and suspended particulate matter concentrations in the pig barns of a commercial pig farm situated in the peri-urban area of Beijing,*** measurements followed the natural pig life-stages namely:gestation,farrowing,weaning,and *** order to accomplish these objectives,three different measurement devices were employed:(i)color diffusion tubes,(ii)a portable gas measuring device,and(iii)a dust measuring *** to the rotation of the devices in the different sampling places,the measurements were performed at different time periods during the months of the summer and winter season in *** pig farm had a capacity of 15000 pigs per year and the manurial system was identified as“gan qing fen”or dry cleaning of the *** main by-products generated by the farm were irrigation water and small-scale biogas *** dust concentrations were identified in the pig barns,especially during the feeding and manure cleaning events inside the farrowing and weaning barns with slatted *** dust ranged from 0 mg/m3 to 12.45 mg/m3,while the allowable dust ranged from 0 mg/m3 to 9.62 mg/*** concentration ranged from 0 ppm to 20 ppm(1 ppm=1 cm3/m3),and the carbon dioxide concentration ranged from 300 ppm to 8000 *** highest ammonia concentration was recorded in the fattening barn during the summer season,while the highest carbon dioxide concentration was reported in the weaning barn during the summer *** results of this study were similar to the results of studies performed on pig farms under natural and mechanical ventilation *** the other hand,the problems encountered during the gas measurements on the pig farm were directly related to the inadequate housing layout due to the obstruction of windows,fans and air channels for indoor ventilation,and thus the measurement devices faced harsh working ***,it is recommended that the housing system s

关键词： pig farm aerial pollutant barn China gases dust

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Nutrients and Trace Elements in a Pig Farm in Beijing： Chinese and German Recommendations

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Journal of Agricultural Science and Technology(A) 2012年第2期2卷 191-208页

作者： roxana mendoza huaitalla Eva Gallmann Xuejun Liu Eberhard Hartung Institute of Agricultural Engineering University of Hohenheim Stuttgart 70599 Germany College of Resources and Environmental Sciences China Agricultural University Beo＇ing 100094 China Institute of Agricultural Engineering Christian-Albrechts-University Kiel Kie124098 Germany

Emergence of Chinese economy together with the current Livestock Revolution in Asia have led to an increase of meat demands, specially pork that is reflected in the growth of commercial pig farms in peri-urban areas of Beijing, capital of People＇s Republic of China. In the framework of the International Research Training Group and of the Sino-Project Recycling of Organic Residues from Agricultural and Municipal Origin in China, the status quo of a large pig farm is researched. The first phase of the project was focused on a detailed description of the nutrients and trace elements contained in the main inputs （water, feed） and outputs （manure, wastewater） of the pig farm. The compliance with the Chinese national standards or often referred to as GB standards （in Chinese ＂GuoBiao＂） and, current German recommendations were included. The analysis of nutrients and trace minerals followed the natural structure of the pig life cycle, i.e., gestation, farrowing, weaning and fattening. The main results showed that the pig drinking water met the recommendations for livestock drinking water, ground water and human drinking water. Concentrations of Zn, Cu, Mn and As in the pig feeds samples displayed higher values compared to the Chinese and German recommendations. Average values of trace elements in the pig manure did not surpass the Chinese and German recommendations of biowastes, however, some manure samples showed excessive concentrations of Cd, Cu and Zn. Likewise, Pb, Cd, Cr, Cu and Zn concentrations in the wastewater surpassed the recommendations for irrigation water.

关键词： Nutrients trace minerals pig farm Chinese standard.

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Phosphorus status, use and recycling in a Chinese peri-urban region with intensive animal husbandry and cropping systems Results from case study in a Sino-German applied research collaboration project

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Frontiers of Agricultural Science and Engineering 2019年第4期6卷 388-402页

作者： Marco ROELCKE Lisa HEIMANN Yong HOU Jianbin GUO Qiaoyun XUE Wei JIA Anne OSTERMANN roxana mendoza huaitalla Moritz ENGBERS Clemens OLBRICH Roland W.SCHOLZ Joachim CLEMENS Frank SCHUCHARDT Rolf NIEDER Xuejun LIU Fusuo ZHANG Institute of Geoecology Technische Universitat Braunschweig38106 BraunschweigGermany Institute of Crop Science University of Hohenheim70599 StuttgartGermany College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China College of Engineering China Agricultural UniversityBeijing 100094China Editorial Committee&Editorial Office of PEDOSPHERE Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China China Agricultural Science and Technology Press Chinese Academy of Agricultural SciencesBeijing 100081China Institute for Crop and Soil Science Julius Kuhn Institute(JKI)-Federal Research Centre for Cultivated Plants38116 BraunschweigGermany Institute of Agricultural Engineering University of Hohenheim70599 Institute of Ethics and Transdisciplinary Sustainability Research Leuphana University of Ltineburg21335 LiineburgGermany Department of Business Administration Economics and LawCarl von Ossietzky University of Oldenburg26129 OldenburgGermany Department for Knowledge and Communication Management Danube University Krems3500 KremsAustria SF-Soepenberg GmbH 46569 HiinxeGermany Institute of Agricultural Technology Johann Heinrich von Thiinen Institute(TI)-Federal Research Institute for Rural AreasForestry and Fisheries38116 BraunschweigGermany

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 *** an intensive crop-livestock agricultural region in the Shunyi District of Beijing,five typical cropping systems were *** 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 *** mean annual P balance surplus was492 kg·ha–1·yr–1 P for the vegetable production system,significantly higher(P30 mg·kg–1)that can lead to increased risk of P loss was exceeded in all five cropping *** feed additives,the"natural background value"(Chinese Environmental Quality Standard for Soils)of copper and zinc in topsoils was exceeded at several *** for several substances in the veterinary antibiotic classes of sulfonamides,tetracyclines,and fluoroquinolones revealed widespread topsoil *** livestock densities were 10.6 livestock units per ha arable land in *** husbandry is increasingly conducted in large operations,making traditional ways of reuse difficult to *** three management systems for treatment of organic

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

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Pig Manure Systems in Germany and China and the Impact on Nutrient Flow

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Journal of Agricultural Science and Technology(A) 2011年第6期1卷 858-865页

作者： F. Schuchardtl, T. Jiang T. Jiang G. X. Li R. mendoza huaitalla Federal Research Institute for Rural Areas Forestry and Fisheries Institute of Agricultural Technology and Biosystems Engineering Braunschweig 38116 Germany Department of Environment Science and Engineering China Agricultural University Beijing 100193 China College of Chemistry and Biology Leshan Normal College Leshan 614004 China Department of Agricultural Engineering University Hohenheim Stuttgart 70599 Germany

Germany and China use different stable systems for fattening pigs. Widespread systems in Germany are closed stables with slatted or partly slatted floor, which produce liquid manure （a mixture of urine, faeces, and cleaning water） whereas in China open stables with closed concrete floors are used with separate collection of faeces and urine. Based on data from literature and own analyses nutrient flows of both systems are calculated. The Chinese manure system or mechanized belt or V-shaped pit floor systems with faeces/urine separation are more effective to separate solids, nutrients, carbon, and heavy metal than mechanical separation from liquid manure. The separation rates can be up to 88% for the solids, 67% for nitrogen, 93% for phosphorus, 60% for potassium, 94% for magnesium, 97% for cupper, and 98% for zinc. The faeces can be used for composting to produce a market product.

关键词： Pig manure China Germany nutrient flow fattening pigs gan qing fen.

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Cognitive disorder and dementia in type 2 diabetes mellitus

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World Journal of Diabetes 2022年第4期13卷 319-337页

作者： Genaro G Ortiz Miguel Huerta Héctor A González-Usigli Erandis D Torres-Sánchez Daniela LC Delgado-Lara Fermín P Pacheco-Moisés Mario A Mireles-Ramírez Blanca MG Torres-mendoza roxana I Moreno-Cih Irma E Velázquez-Brizuela Department of Philosophical and Methodological Disciplines University Health Sciences CenterUniversity of GuadalajaraGuadalajara 44340JaliscoMexico Department of Neurology Movement Disorders ClinicSub-Specialty Medical UnitNational Western Medical CenterMexican Social Security Institute(IMSS)Guadalajara 44340JaliscoMexico University Biomedical Research Center University of ColimaColima 28040Mexico Department of Medical and Life Sciences University Center of‘La Ciénega’University of GuadalajaraOcotlán 47810JaliscoMexico Department of Chemistry University Center of Exact Sciences and EngineeringUniversity of GuadalajaraGuadalajara 44340JaliscoMexico Division of Neurosciences Western Biomedical Research CenterMexican Social Security Institute(IMSS)Guadalajara 44340JaliscoMexico Gerontology Postgraduate Program Public Health DepartmentUniversity Health Sciences CenterUniversity of GuadalajaraGuadalajara 44340JaliscoMexico

Insulin,a key pleiotropic hormone,regulates metabolism through several signaling pathways in target tissues including skeletal muscle,liver,and *** the brain,insulin modulates learning and memory,and impaired insulin signaling is associated with metabolic dysregulation and neurodegenerative *** the receptor level,in aging and Alzheimer’s disease(AD)models,the amount of insulin receptors and their functions are *** and animal model studies suggest that memory improvements are due to changes in insulin ***,diabetes mellitus(DM)and insulin resistance are associated with age-related cognitive decline,increased levels ofβ-amyloid peptide,phosphorylation of tau protein;oxidative stress,pro-inflammatory cytokine production and dyslipidemia. Recent evidence shows that deleting brain insulin receptors leads to mildobesity and insulin resistance without influencing brain size and apoptosis ***, deleting insulin-like growth factor 1 receptor (IGF-1R) affects brain size anddevelopment, and contributes to behavior changes. Insulin is synthesized locally in the brain andis released from the neurons. Here, we reviewed proposed pathophysiological hypotheses toexplain increased risk of dementia in the presence of DM. Regardless of the exact sequence ofevents leading to neurodegeneration, there is strong evidence that mitochondrial dysfunctionplays a key role in AD and DM. A triple transgenic mouse model of AD showed mitochondrialdysfunction, oxidative stress, and loss of synaptic integrity. These alterations are comparable tothose induced in wild-type mice treated with sucrose, which is consistent with the proposal thatmitochondrial alterations are associated with DM and contribute to AD development. Alterationsin insulin/IGF-1 signaling in DM could lead to mitochondrial dysfunction and low antioxidantcapacity of the cell. Thus, insulin/IGF-1 signaling is important for increased neural processing andsystemic metabolism, a

关键词： Alzheimer´s disease Diabetes mellitus Insulin Vascular dementia Cognitive decline

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