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层析聚酰胺树脂的微观形态和结晶性能研究

化工新型材料 2009年第6期37卷 100-103页

作者：吴唯邬智勇 manfred H. wagner 华东理工大学材料科学与工程学院上海200237 中国石化集团公司巴陵石油化工有限责任公司岳阳414014 德国柏林工业大学高分子材料研究所柏林10623

采用表面反射光学显微镜、热台偏光显微镜、DSC分析等手段，表征、分析和研究了两种巴陵石化生产的层析分离用聚酰胺树脂PA-1（30-60目）和PA-2（60-80目）的微观形态结构以及熔融和结晶性能，并与市售普通层析聚酰胺树脂PA-3（60-80目... 详细信息

采用表面反射光学显微镜、热台偏光显微镜、DSC分析等手段，表征、分析和研究了两种巴陵石化生产的层析分离用聚酰胺树脂PA-1（30-60目）和PA-2（60-80目）的微观形态结构以及熔融和结晶性能，并与市售普通层析聚酰胺树脂PA-3（60-80目）和两种工程塑料级PA6的基本性能作了比较。结果表明，层析聚酰胺树脂是一种微细颗粒状多孔材料，与工程塑料级聚酰胺树脂一样，它仍然是一种结晶性聚合物，熔点在208℃附近。与市售层析聚酰胺树脂相比，巴陵石化生产的层析聚酰胺树脂颗粒的形状规整，粒度均匀，纯净度高，多孔结构丰富，层析分离效果好。与工程塑料级PA6相比，层析聚酰胺树脂的结晶速度慢，结晶过程中的结晶焓小。巴陵石化生产的层析聚酰胺树脂具有部分形成松散的结晶结构的能力，有利于增加微孔结构，提高其吸附和分离功能。

关键词：聚酰胺树脂层析分离微观形态结晶

Geostatistical seismic inversion and 3D modelling of metric flow units,porosity and permeability in Brazilian presalt reservoir

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Petroleum Science 2024年第3期21卷 1699-1718页

作者： Rodrigo Penna wagner Moreira Lupinacci Exploratory Interpretation and Reservoir Characterization Group(GIECAR) Department of Geology and GeophysicsUniversidade Federal FluminenseNiteroiRJ24210-346Brazil Petrobras Rio de JaneiroRJ20031-912Brazil

Flow units(FU)rock typing is a common technique for characterizing reservoir flow behavior,producing reliable porosity and permeability estimation even in complex geological ***,the lateral extrapolation of FU away from the well into the whole reservoir grid is commonly a difficult task and using the seismic data as constraints is rarely a subject of *** paper proposes a workflow to generate numerous possible 3D volumes of flow units,porosity and permeability below the seismic resolution limit,respecting the available seismic data at larger *** methodology is used in the Mero Field,a Brazilian presalt carbonate reservoir located in the Santos Basin,who presents a complex and heterogenic geological setting with different sedimentological processes and diagenetic *** generated metric flow units using the conventional core analysis and transposed to the well log ***,given a Markov chain Monte Carlo algorithm,the seismic data and the well log statistics,we simulated acoustic impedance,decametric flow units(DFU),metric flow units(MFU),porosity and permeability volumes in the metric *** aim is to estimate a minimum amount of MFU able to calculate realistic scenarios porosity and permeability scenarios,without losing the seismic lateral *** other words,every porosity and permeability volume simulated produces a synthetic seismic that match the real seismic of the area,even in the metric *** achieved 3D results represent a high-resolution fluid flow reservoir modelling considering the lateral control of the seismic during the process and can be directly incorporated in the dynamic characterization workflow.

关键词： Flowunits Geostatistical inversion Presalt reservoir 3D reservoir modelling Petrophysical modelling

Exposure to sublethal concentration of flupyradifurone alters sexual behavior and cuticular hydrocarbon profile in Heriades truncorum,an oligolectic solitary bee

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Insect Science 2024年第3期31卷 859-869页

作者： Samuel Boff manfred Ayasse Institute of Evolutionary Ecology and Conservation Genomics Ulm UniversityUlmGermany

The aboveground oligolectic bee,Heriades truncorum,is a particularly good model for studying the impact of pesticides on sexual communication,since some aspects of its mating behavior have previously been *** have tested(1)the interference of the pesticide flupyradifurone on male precopulatory behavior and male mating partner preferences,(2)the way that the pesticide interferes in male quality assessment by the female,and(3)the effects of the pesticide on the chemical compounds in the female *** exposed bees of both sexes to a sublethal concentration of *** behaviors were registered in a mating arena with two females(one unexposed and one exposed)and one male(either unexposed or exposed).Unexposed males were quicker to attempt to *** also impacted precopulatory behavior and male quality assessment by *** approached unexposed females more quickly than insecticideexposed *** exposed to insecticide produced lower amounts of some cuticular hydrocarbons(sex pheromone candidates)and appeared less choosy than unexposed *** findings suggest that insecticide exposure affects sexual communication,playing a role both in male preference and in male quality assessment by the female.

关键词： courtship display female choice flupyradifurone male partner preference sex communication sublethal effects

An optimized derivative of an endogenous CXCR4 antagonist prevents atopic dermatitis and airway inflammation

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Acta Pharmaceutica Sinica B 2021年第9期11卷 2694-2708页

作者： Mirja Harms Monica MWHabib Simona Nemska Antonella Nicolò Andrea Gilg Nico Preising Pandian Sokkar Sara Carmignani Martina Raasholm Gilbert Weidinger Gönül Kizilsavas manfred wagner Ludger Ständker Ashraf HAbadi Hassan Jumaa Frank Kirchhoff Nelly Frossard Elsa Sanchez-Garcia Jan Münch Institute of Molecular Virology Ulm University Medical CenterUlm 89081Germany Department of Pharmaceutical Chemistry Faculty of Pharmacy and BiotechnologyGerman University in CairoCairo 11835Egypt Laboratoire D'Innovation Thérapeutique UMR7200 CNRS/Universitéde Strasbourg and LabEx MEDALISFacultéde PharmacieIllkirch 67412France Institute of Immunology Ulm University Medical CenterUlm 89081Germany Core Facility Functional Peptidomics Ulm University Medical CenterUlm 89081Germany Center of Medical Biotechnology University of Duisburg-EssenDuisburg 47057Germany Max-Planck-Institute for Coal Research Düsseldorf 45470Germany Faculty of Allied Health Sciences Chettinad Hospital and Research InstituteChettinad Academy of Research and EducationKelambakkam 603103India Max-Planck-Institut für Molekulare Physiologie Dortmund 44227Germany Institute of Biochemistry and Molecular Biology Ulm UniversityUlm 89081Germany Max Planck Institute for Polymer Research Mainz 55128Germany

Aberrant CXCR4/CXCL12 signaling is involved in many pathophysiological processes such as cancer and inflammatory diseases.A natural fragment of serum albumin,named EPI-X4,has previously been identified as endogenous peptide antagonist and inverse agonist of CXCR4 and is a promising compound for the development of improved analogues for the therapy of CXCR4-associated *** generate optimized EPI-X4 derivatives we here performed molecular docking analysis to identify key interaction motifs of EPI-X4/*** rational drug design allowed to increase the anti-CXCR4 activity of *** EPI-X4 derivative JM#21 bound CXCR4 and suppressed CXCR4-tropic HIV-1 infection more efficiently than the clinically approved small molecule CXCR4 antagonist ***-X4 JM#21 did not exert toxic effects in zebrafish embryos and suppressed allergen-induced infiltration of eosinophils and other immune cells into the airways of animals in an asthma mouse ***,topical administration of the optimized EPI-X4 derivative efficiently prevented inflammation of the skin in a mouse model of atopic ***,rationally designed EPIX4 JM#21 is a novel potent antagonist of CXCR4 and the first CXCR4 inhibitor with therapeutic efficacy in atopic *** clinical development of this new class of CXCR4 antagonists for the therapy of atopic dermatitis,asthma and other CXCR4-associated diseases is highly warranted.

关键词： CXCR4 antagonist Asthma Allergy Inflammation Atopic dermatitis

各向同性炭在石墨化过程中的不可逆膨胀和收缩

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炭素技术 1983年第1期 25-27+24页

作者： manfred H.wagner 季林强

高温核反应堆的堆芯主要由各向同性炭组成。本文对核石墨在石墨化过程中的不可逆膨胀和收缩的性能进行了研究,并对高达2500℃的临界范围内焦炭基料、成型方法、浸渍步骤、焙烧条件对产品尺寸变化的影响进行了论述。

关键词：石墨化可逆膨胀基料尺寸变化振动成型漆料焦炭沥青焦二次焙烧

Organic petrographic and mineralogical composition of the No. 6 coal seam of the Soutpansberg Coalfield, South Africa: Insights into paleovegetation and depositional environment

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International Journal of Coal Science & Technology 2024年第3期11卷 190-207页

作者： Sanki Biswas Nicola J.wagner Ofentse M.Moroeng DSI-NRF CIMERA/PPM Research Group Department of GeologyUniversity of JohannesburgJohannesburgSouth Africa

This study investigates the paleodepositional conditions of the No.6 Seam of the Madzaringwe Formation in Makhado and Voorburg south area of the Soutpansberg Coalfield(Limpopo Province,South Africa)utilizing organic petrography and inorganic geochemical *** coals are predominantly high-volatile bituminous B-A rank with high ash yields(avg.36.1 wt%),characterized by high-vitrinite(~41.5 vol%),moderate-to-high inertinite(9.8 vol%–33.7 vol%)and low liptinite(~2.3 vol%).The distribution of inertinite varies among different coal horizons(from bottom-lower to middle-upper),suggesting differential oxidation conditions and/or paleofire ***-to-inertinite(V/I)ratio,tissue preservation–gelification index(TPI–GI),and groundwater–vegetation index(GWI–VI)plots,indicate that the peat-forming forest-swamp vegetation accumulated under mesotrophic-to-rheotrophic hydrological *** presence of structured macerals(i.e.,telinite,collotelinite,fusinite,and semifusinite)suggests well-preserved plant tissues,whereas framboidal pyrite and sulphur content(0.24 wt%–2.16 wt%)point to brackish-water influence at the peat *** coals contain quartz,kaolinite,siderite,muscovite,dolomite,calcite,and pyrite minerals,most of which were likely sourced from felsic igneous *** Al/(Al+Fe+Mn)and(Fe+Mn)/Ti ratios for the studied samples range between 0.24–0.97 and 0.57–70.10,*** ratios,Al–Fe–Mn plot,and presence of massive botryoidal-type pyrite imply some influence of meteoric waters or fluids from hydrothermal activity ***,the chemical index of alteration(CIA:98.25–99.67),chemical index of weathering(CIW:92.04–97.66),and A–CN–K ternary diagram suggest inorganic matter suffered strong chemical weathering,indicating warm paleoclimatic conditions during the coal formation.

关键词： Macerals Coal facies Geochemical-indices Hydrothermal Madzaringwe formation Soutpansberg Coalfield

Stochastic seismic inversion and Bayesian facies classification applied to porosity modeling and igneous rock identification

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Petroleum Science 2024年第2期21卷 918-935页

作者： Fábio Júnior Damasceno Fernandes Leonardo Teixeira Antonio Fernando Menezes Freire wagner Moreira Lupinacci Exploratory Interpretation and Reservoir Characterization Group(GIECAR) Department of Geology and GeophysicsFederal Fluminense UniversityNiter oiRJ24210-346Brazil Petrobras Rio de JaneiroRJ20231-030Brazil National Institute of Science and Technology of Petroleum Geophysics(INCT-GP/CNPQ) Niter oiRJ24210-346Brazil

We apply stochastic seismic inversion and Bayesian facies classification for porosity modeling and igneous rock identification in the presalt interval of the Santos Basin. This integration of seismic and well-derived information enhances reservoir characterization. Stochastic inversion and Bayesian classification are powerful tools because they permit addressing the uncertainties in the model. We used the ES-MDA algorithm to achieve the realizations equivalent to the percentiles P10, P50, and P90 of acoustic impedance, a novel method for acoustic inversion in presalt. The facies were divided into five: reservoir 1,reservoir 2, tight carbonates, clayey rocks, and igneous rocks. To deal with the overlaps in acoustic impedance values of facies, we included geological information using a priori probability, indicating that structural highs are reservoir-dominated. To illustrate our approach, we conducted porosity modeling using facies-related rock-physics models for rock-physics inversion in an area with a well drilled in a coquina bank and evaluated the thickness and extension of an igneous intrusion near the carbonate-salt interface. The modeled porosity and the classified seismic facies are in good agreement with the ones observed in the wells. Notably, the coquinas bank presents an improvement in the porosity towards the top. The a priori probability model was crucial for limiting the clayey rocks to the structural lows. In Well B, the hit rate of the igneous rock in the three scenarios is higher than 60%, showing an excellent thickness-prediction capability.

关键词： Stochastic inversion Bayesian classification Porosity modeling Carbonate reservoirs Igneous rocks

Mechanical upper bowel obstruction caused by a large trichobezoar in a young woman: A very unusual case report

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World Journal of Clinical Cases 2024年第4期12卷 777-781页

作者： Magdalena Scherrer Peter Kornprat Robert Sucher Johanna Muehlsteiner Doris wagner Department of Surgery Division for GeneralVisceral and Transplantation SurgeryMedical University of GrazGraz 8036Austria Department of Surgery Clinic RohrbachRohrbach 4150Austria

BACKGROUND Bezoars usually compile human fibers and debris.A special form of bezoar in case of psychologically altered individuals is the *** consists of voluntarily swallowed hair bulks and is normally removed via *** leading to ileus have rarely been *** SUMMARY A 24-year-old female patient presented to the emergency room with abdominal pain,nausea,and vomiting for 3 *** previous medical and psychiatric history was *** analysis showed iron deficiency anemia,leukocytosis,and elevated liver *** abdominal CT scan revealed a dense structure in the patients’stomach which turned out to be a huge trichobezoar completely obstructing the *** trichobezoar had to be removed *** her postoperative course,a subcutaneous seroma *** a single puncture,the rest of the recovery process was unremarkable,and the patient recovered *** A mechanical bowel obstruction is a potentially life-threatening event for every *** our case a young female was suffering from severe symptoms of an obstruction which might have resulted in serious harm without successful surgical management.

关键词： Rapunzel syndrome Hair ingestion Gastroscopy Bezoar Case report

A census tract-level assessment of social determinants of health,traffic exposure,and asthma exacerbations in New York State's Medicaid Population(2005–2015)

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Eco-Environment & Health 2024年第3期3卷 300-307页

作者： Temilayo Adeyeye Tabassum Zarina Insaf Catherine Adler Victoria wagner Anisa Proj Susan McCauley Bureau of Environmental and Occupational Epidemiology New York State Department of HealthAlbanyNY 12237USA Department of Environmental Health Sciences University at Albany School of Public HealthAlbanyNY 12222USA Bureau of Cancer Epidemiology New York State Department of HealthAlbanyNY 12237USA Department of Epidemiology and Biostatistics University at Albany School of Public HealthAlbanyNY 12222USA Office of Quality and Patient Safety New York State Department of HealthAlbanyNY 12237USA Bureau of Chronic Disease Evaluation and Research New York State Department of HealthAlbanyNY 12237USA

This study aims to evaluate the association between social determinants,environmental exposure metrics,and the risk of asthma emergency department(ED)visits in the New York State(NYS)Medicaid population using smallarea *** densities for each census tract in NYS were calculated using the length of road segments within each tract and total area of the tract to produce a measure of average number of vehicles per square meter per *** on social determinants of health including internal and external environments and other demographic factors were obtained from various *** regression analyses were conducted to identify significant factors associated with asthma ED visits in Medicaid claim and encounter data for years 2005–*** traffic density in NYS excluding New York City(NYC)correlated with increased risk of asthma ED visits(RR 1.69;95%CI:1.42,2.00),mitigated by adjusting for environmental and social determinants(RR 1.00;95%CI:0.85,1.19).Similar trends were observed in NYC only(RR 1.19;95%CI:1.00,1.41),with the adjusted risk remaining elevated(RR 1.14;95%CI:0.98,1.33)albeit not statistically *** in census tracts with high concentrated disadvantage index,high proportions of minorities,and less green space predicted higher asthma ED *** mapped predicted rates and model residuals to identify areas of high *** results support previous findings that environmental and social risk factors in poor and urban areas contribute to asthma exacerbations in the NYS Medicaid population,even if they may not necessarily contribute to its development.

关键词： Asthma Medicaid Social determinants Traffic density Environmental exposures