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environmental Forensic Investigation in the Residential Neighborhood Volta Grande IV,Volta Redonda,RJ,Brazil,Using TPH and PAHs Analyses in Soil Samples

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Journal of environmental Protection 2019年第7期10卷 972-991页

作者： Jose C.R.Gouvea jr. Fernando Simao e Silva Reginaldo A.Bertolo Tiago R.Moura Stephen emsbo-Mattingly CePAS—Groundwater Research Center University of Sao PauloIGc-USPSao PauloBrazil NewFields Rio de JaneiroBrazil NewFields RocklandMassachusettsUSA

This article presents the results of a forensic investigation concerning the origin of hydrocarbons detected in the subsurface soil of the residential neighborhood Volta Grande IV, Volta Redonda, RJ, Brazil. Previous investigations identified several areas with concentrations of volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs) above the Brazilian regulatory standards of CONAMA 420/2009 within the study area. Concern was raised that these hydrocarbons might be derived from local steel mill wastes. This forensic investigation determined that the VOCs in the residential soil are associated with gasoline and possibly diesel fuel oil releases into the subsurface soils that are not associated with the steel mill waste. The PAHs in residential subsurface soil generally fell below background concentrations and are likely associated with regional soot. The PAHs in the three samples with concentrations above background (out of a total of thirty-six samples) exhibit compositional features similar to coal byproducts, such as tar and coke, possibly attributable to the steel mill operation. This work discusses the geoforensic data and chemical signatures that support these findings.

关键词： environmental Forensic Investigation Hydrocarbons Fingerprinting Polycyclic Aromatic Hydrocarbons

SOC Turnover and Lime-CO<sub>2</sub>evolution during Liming of an Acid Andisol and Ultisol

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Open Journal of Soil Science 2011年第2期1卷 49-53页

作者： Wilfredo A. Dumale jr. Tsuyoshi Miyazaki Kenta Hirai Taku Nishimura Department of Plant Science Nueva Vizcaya State University Bayombong Nueva Vizcaya Philippines Department of Biological and environmental engineering University of Tokyo Tokyo Japan.

Agricultural liming contributes significantly to atmospheric CO2 emission from soils but data on magnitude of lime- contributed CO2 in a wide range of acid soils are still few. Data on lime-contributed CO2 and SOC turnover for global acid soils are needed to estimate the potential contribution of agricultural liming to atmospheric CO2. Using Ca13CO3 (13C 99%) as lime and tracer, here we separated lime-contributed and SOC-originated CO2 evolution in an acidic Kuroboku Andisol from Tanashi, Tokyo Prefecture (35°44′ N, 139°32′ e) and Kunigami Mahji Ultisol of Nakijin, Okinawa Prefecture, Japan (26°38′ N, 127°58′ e). On the average, lime-CO2 was 76.84% (Kuroboku Andisol) and 66.36% (Kunigami Mahji Ultisol) of overall CO2 emission after 36 days. There was increased SOC turnover in all limed soils, confirming priming effect (Pe) of liming. The calculated Pe of lime (Kuroboku Andisol, 51.97% - 114.95%;Kunigami Mahji Ultisol, 10.13% - 35.61%) was entirely 12C turnover of stable soil organic carbon (SOC) since SMBC, a labile SOC pool, was suppressed by liming in our experiment. Our results confirmed that mineralization of lime-carbonates is the major source of CO2 emission from acid soils during agricultural liming. Liming can influence the size of CO2 evolution from agricultural ecosystems considering global extent of acid soils and current volume of lime utilization. We propose the inclusion of liming in simulating carbon dynamics in agricultural ecosystems.

关键词： Agricultural Liming Soil Organic Carbon SOC Turnover Andisol Ultisol

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高浓度焦化废水硝化/反硝化系统的操作经验

燃料与化工 2005年第1期36卷 58-61页

作者： Sam e.Shelby jr. 孙可美国

1998年,美国钢铁公司为格里焦化厂设计建设了一套新的焦化废水处理装置.该装置由除油、均化、蒸氨脱酸、活性污泥硝化与反硝化等工序组成.总氮含量2～3g/L的蒸氨废水进入生化处理装置中处理.两个曝气槽均由综合澄清区、厌氧区和好氧区组... 详细信息

1998年,美国钢铁公司为格里焦化厂设计建设了一套新的焦化废水处理装置.该装置由除油、均化、蒸氨脱酸、活性污泥硝化与反硝化等工序组成.总氮含量2～3g/L的蒸氨废水进入生化处理装置中处理.两个曝气槽均由综合澄清区、厌氧区和好氧区组成,在每个曝气槽内可完成硝化、反硝化和二次澄清.该装置是焦化工业中第一套高氮废水的厌氧/好氧处理装置,也是世界上首次应用厌氧/好氧/综合澄清的废水处理装置.

关键词：硝化/反硝化焦化废水处理曝气蒸氨废水好氧生化处理活性污泥装置均化焦化厂

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化学—中心科学

化学—中心科学

Correlation of stress radiographs to injuries associated with lateral ankle instability

作者： T.L.·布朗(T.L. Brown) H.e.·小李梅(H.e. LeMay jr.)

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World Journal of Orthopedics 2021年第9期12卷 710-719页

作者： Joshua W Sy Andrew J Lopez gregory e Lausé J Banks Deal Michael B Lustik Paul M Ryan Department of Orthopaedic Surgery Tripler Army Medical CenterHonoluluHI 96859United States Department of Statistics Tripler Army Medical CenterHonoluluHI 96859United States

BACKGROUND Stress radiographs have demonstrated superior efficacy in the evaluation of ankle *** To determine if there is a degree of instability evidenced by stress radiographs that is associated with pathology concomitant with ankle ligamentous *** A retrospective review of 87 consecutive patients aged 18-74 who had stress radiographs performed at a single institution between 2014 and 2020 was *** manual radiographic stress views were then correlated with magnetic resonance imaging and operative *** A statistically significant association was determined for the mean and median stress radiographic values and the presence of peroneal pathology(P=0.008 for tendonitis and P=0.020 for peroneal tendon tears).A significant inverse relationship was found between the presence of an osteochondral defect and increasing degrees of instability(P=0.043).CONCLUSION Although valuable in the clinical evaluation of ankle instability,stress radiographs are not an independent predictor of conditions associated with ankle in-stability.

关键词： Ankle stress radiographs Lateral ankle instability Osteochondral defect Arthroscopy Peroneal tendinopathy

evaluation by ICP-MS of essential, Nonessential and Toxic elements in Brazilian Fish and Seafood Samples

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Food and Nutrition Sciences 2012年第9期3卷 1252-1260页

作者： Denise Grotto Bruno Lemos Batista Maria Fernanda Hornos Carneiro Fernando Barbosa jr. Departamento de Análises Clínicas Toxicológicas e Bromatológicas Faculdade de Ciências Farmacêuticas de Ribeir&atildeo Preto Universidade de S&atildeo Paulo S&atildeo Paulo Brazil

Fish is considered one of the healthiest foods due to the high levels of several important cardioprotective compounds such as long chain omega-3 polyunsaturated fatty acids and vitamin e. However, due to widespread environmental pollution, high levels of contaminants may also be present in fish and seafood samples, which may counteract the beneficial effects of consumption of this food. With this in mind, the aims of this study were: 1) to examine both toxic and essential chemical elements in seafood and river and sea fish samples sold in different Brazilian regions by inductively coupled plasma mass spectrometer (ICP-MS);2) to estimate the daily intake of these chemical elements by Brazilians. The toxic elements Ba, Cd, Pb, Sr, V and Sb were found in higher concentrations in seafood than in either sea or river fish, while As concentrations were higher in both seafood and sea fish than in river fish. On the other hand, Hg levels were higher in river and sea fish. Concentrations of the essential chemical elements Co, Mn, Cu, Fe, Mg, Zn and Mo were significantly higher in seafood compared with both sorts of fish except for Se, whose levels were similar in seafood and sea fish. Daily intake of all chemical elements was estimated on the basis of a calculation of the amount of fish consumed by Brazilian households (mean fish and seafood consumption of 11.0 g/person/day). The amount of toxic element in fish and seafood did not represent a risk for the Brazilian people. Moreover, fish and seafood seem to be a good source of selenium.

关键词： River Fish Sea Fish Seafood Toxic elements essential elements estimated Daily Intake ICP-MS

Reproductive potential of field-collected overwintering boll weevils （Coleoptera： Curculionidae） fed on pollen in the laboratory

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Insect Science 2009年第4期16卷 321-327页

作者： S. M. Greenberg G. D. Jones J. J. Adamczyk, jr. F. eischen J. S. Armstrong R. J. Coleman M. Setamou Tong-Xian Liu USDA-ARS-KSARC-BIRU 2413 E. Hwy. 83 Weslaco Texas 78596 APMRU-SPA-ARS-USDA College Station Texas 77845 USDA- ARS-KSA RC-Honey Bee Research Unit Texas A&M University Kingsville Citrus Center Weslaco TX 78596 Department of entomology Texas AgriLife Research Texas A&M University System Weslaco Texas 78596 USA

The reproductive potential of overwintering boll weevil, Anthonomus grandis grandis （Boheman）, females collected from pheromone traps in September, November and January, fed for 1, 3, and 5 weeks on plant pollens, and then provided cotton squares, was determined in the laboratory at 27 ~ I^C, 65% RH, and a photoperiod 13 ： 11 （L ： D） h. Duration of pollen feeding by overwintering boll weevils did not significantly influence egg and feeding punctures, or puncture ratios （egg to total punctures） for any of the three months of parent weevil collections when provided cotton squares on a daily basis. However, punctures and puncture ratios are significantly different when comparing mean data between months of boll weevil collections. When boll weevils were provided with cotton squares daily, the pre-ovipositional periods of female parents captured in September, November and January were 5, 9 and 14 days, respectively. The rate of eggs by females was significantly lower during November and January than September. Female parents collected in September produced a significantly higher percentage of eggs yielding adult progeny than those collected in November and January. Life table parameters indicated that net reproductive rate （Ro） of boll weevil females collected in September was 1.2- fold higher than those collected in November and 10.7-fold higher than those collected in January. except for testes size, no differences in male reproductive parameters were observed during the cotton-free period compared with males captured during mid-cotton （June）. The number of oocytes in the ovarioles and the number of ooeytes containing yolk were significantly lower during September, November and January compared with June. The reproductive potential ofoverwintering boll weevil females collected in different months is an important consideration in determining the success of any control strategy.

关键词： Anthonomusgrandisgrandis overwintering boll weevil reproductive pollen

Thermal and microstructural characterization of a novel ductile cast iron modified by aluminum addition

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International Journal of Minerals,Metallurgy and Materials 2020年第2期27卷 190-199页

作者： Gülsah Aktas Celik Maria-Ioanna TTzini Seyda Polat SHakan Atapek gregory NHaidemenopoulos Department of Metallurgical and Materials engineering Kocaeli UniversityKocaeli 41001Turkey Laboratory of Materials Department of Mechanical EngineeringUniversity of ThessalyVolos 38334Greece Department of Mechanical engineering Khalifa University of Science and TechnologyAbu Dhabi 127788UAE

In high-temperature applications,like exhaust manifolds,cast irons with a ferritic matrix are mostly ***,the increasing demand for higher-temperature applications has led manufacturers to use additional expensive materials such as stainless steels and Ni-resist austenitic ductile cast ***,in order to meet the demand while using low-cost materials,new alloys with improved high-temperature strength and oxidation resistance must be *** this study,thermodynamic calculations with Thermo-Calc software were applied to study a novel ductile cast iron with a composition of 3.5wt%C,4wt%Si,1wt%Nb,0‒4wt%*** designed compositions were cast,and thermal analysis and microstructural characterization were performed to validate the *** lowest critical temperature of austenite to pearlite eutectoid transformation,i.e.,A1,was calculated,and the solidification sequence was *** calculations and experimental data revealed the importance of aluminum addition,as the A1 increased by increasing the aluminum content in the alloys,indicating the possibility of utilizing the alloys at higher *** experimental data validated the transformation temperature during solidification and at the solid state and confirmed the equilibrium phases at room temperature as ferrite,graphite,and MC-type carbides.

关键词： ductile cast iron alloy design Thermo-Calc high-temperature material

embryonic Hypertension Following exposure to Teratogenic Doses of 5-Fluoro-2'-Deoxyuridine

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Biomedical and environmental Sciences 1996年第4期9卷 408-417页

作者： VINU D. PATeL ROBeRT S. NOLAN NORMAN HU eDWARD B. CLARKA DAVID R. HOOTNICK e. MARK LeVINSOHN AND DAVID S. PACKARD, jr.(Departments of Obstetrics and Gynecology, Anatomy and Cell Biotogy, and Pediatrics, Stale University of New York Health Science C Department of Obstetrics and Gynecology State University of New York Health Science Center Syracuse New York 13210 USA.

The teratogenicity of 5-fluoro-2'-deoxyuridine (FdU) is well established. Previously, we have demonstrated that teratogenic doses of FdU produce hematomas and suggested that those hematomas produced skeletal malformations in chicken embryos. In this study, the cardiovascular effects of teratogenic doses of FdU in chicken embryos were studied. A dose of either 0.026 μg FdU or 0.030 μg FdU was injected into the yolk sacs of fertile chicken eggs containing embryos at Hamburger and Hamilton stages 17-19 of development. The embryos were then returned to the incubator. Aortic systolic and diastolic blood pressure,blood velocity and heart rate were measured at stages 21, 24 or 27 using a servonull system and Doppler ultrasound. In addition, mean arterial blood pressure, blood flow, and stroke volume were calculated from these data. Similar data were also recorded from uninjected and saline injected control embryos. Systolic and mean arterial blood pressures were significantly increased in FdU-treated embryos at stage 27. The other parameters measured or calculated were not significantly different from control embryos. Our study suggests that elevated systolic blood pressure in chicken embryos treated with FdU may lead to hematoma formation and subsequent birth defects

关键词： Deoxyuridine embryonic Hypertension Following exposure to Teratogenic Doses of 5-Fluoro-2