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Serum Zinc, Copper and Albumin in Paired Mothers and Their Term Newborn in a Tertiary Hospital in Nigeria

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open Journal of Pediatrics 2018年第3期8卷 273-282页

作者： Ayodele ojuawo Aishat Saka omotayo Adesiyun Tope obasa Bunmi olarinoye Kike Adesina Abayomi Biliaminu Adedeji Aderibigbe musibau AdulAzeez Department of Paediatrics Obstetrics & Gynaecology Chemical Pathology Epidemiology & Community Health University of Ilorin Teaching Hospital Ilorin Nigeria

objective: This study assessed the serum zinc, copper and albumin levels in paired mother and newborns in the immediate neonatal period to establish the relationship between the pair, and the influence of maternal micronutrient status on that of the newborn if any. Methods: The sociodemographic characteristics of the mothers were obtained using a structured questioner after informed consent was obtained from the parents of the baby. At delivery, paired mother and newborns had their serum zinc, copper and albumin assayed, using cord blood in the newborn. Result: one hundred and thirty five mothers and their paired term newborns completed the study. The mean age of the mothers was 29.2 ± 4.6 years with 67% within the age bracket 20 to 30 years. Seventy three percent of the mothers attained tertiary education and 22% had secondary education. The mean serum zinc was significantly higher in the newborn (3.67 ± 1.49 μmol/L) than in the mothers (2.20 ± 1.01 μmol/L), p = 0.0001, with a feto-maternal ratio of 1.6 to 1. Copper was significantly higher in the mothers (4.27 ± 1.77 μmol/L), than in the newborns (2.84 ± 0.92 μmol/L) (p = 0.001), with a maternal-fetal ratio of 1.5 to 1. Mean serum albumin was significantly lower in the newborns than in the mothers (p > 0.011). Conclusion: This study established that term newborns have higher serum zinc, a lower serum copper and albumin levels than their maternal levels. The distribution of these trace elements is probably protective in the newborns against infection.

关键词： Maternal-Newborn Pair Zinc Copper Albumin

Development，Application，Markets，and　Patent　Situation　of　Magnetostrictive　TERFENoL－D

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Journal of Rare Earths 1995年第4期13卷 295-301页

作者： McMasters, o.D. ETREMA Products Inc. 2500 North Loop Drive Ames Iowa 50010

The development of the giant magnetostrictive rare earth-iron materials is reported from their discovery in the early 1970's to their present use in transducer and sensor applications. Fifteen broad market areas, ranging from miniature devices in the medical industry to high powder sonar and seismic sources have been identified. A world-wide customer base in these high technology fields has been established and the superior properties of these materials are responsible for the rapid growth of the magnetostrictive transducer industries. The critical design criteria that lead to efficient devices are reported and the performance of several of these products is presented. The key patents associated with these giant magnetostrictive materials and devices using these materials are reviewed. The present and future of these technologies in reference to commercialization, market growth and the impact on the many transduction industries are discussed. (Author abstract) 9 Refs.

关键词： Magnetostrictive Situation Patent TERFENoL and Development Application

Breakage of drops and bubbles in a stirred tank： A review ofexperimental studies

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Chinese Journal of Chemical Engineering 2017年第6期25卷 698-711页

作者： Basim o. Hasan Department of Chemical Engineering Technical University of Berlin 6ermany Department of Chemical Engineering AI-Nahrain University lraq

The rate of breakage of drops and bubbles(fluid particles) in stirred systems is of great consequence on mass,heat, and momentum transport phenomena. Therefore, over the years, the topic has gained a considerable attention from the researchers to study and characterize this phenomenon. In present work, the experimental studies of breakage phenomenon in a stirred tank in the last four decades were reviewed. The review highlighted the investigated experimental conditions and the major findings concerning the breakage mechanism and the effect of operating conditions. The discrepancy and contradictions of the outcomes of those studies were specified and discussed. Experimental observations and conclusions concerning the breakage characterization parameters,such as deformation, breakage probability, breakage time, and breakage location were presented and commented on. Possible future refinements and prospective were recommended. The review indicated that there are clear discrepancies and contradictions between previous studies regarding the effect of some operating parameters and the values of breakage time, breakage probability, number of daughter particles, and breakage location relative to the impeller. In addition, there are still many scientific gaps that need to be studied and characterized in future by overcoming specific experimental difficulties and uncertainties.

关键词： Drop Bubble Breakage Stirred tank Review Breakage rate

Hydrodynamics of marine and offshore structures

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Journal of Hydrodynamics 2014年第6期26卷 835-847页

作者： FALTINSEN o.M. Centre for Autonomous Marine operations and Systems (AMoS) Department of Marine Technology

An overview of hydrodynamic problems related to the broad variety of ships and sea structures involved in transportation, oil and gas exploration and production, marine operations, recovery of oil-spill, renewable energy, infrastructure and aquaculture is given. An approximate hydroelastic model for wave and current induced response of a floating fish farm with circular plastic collar and net cage is discussed. Weakly nonlinear potential-flow problems such as slow-drift motions and stationkeeping, springing of ships and ringing are given special attention. Body-fixed coordinate system is recommended in weakly nonlinear potential-flow analysis of bodies with sharp corners. Dynamic ship instabilities, Mathieu-type instabilities, chaos and two-phase flow involving interface instabilities are discussed. It is advocated that slamming must be coupled with structural mechanics in order to find important time scales of the many physical effects associated with slamming and that both water entry and exit matter in describing the global wetdeck slamming effects. Further, sloshing-induced slamming in prismatic LNG tanks is perhaps the most complicated slamming problem because many fluid mechanic and thermodynamic parameters as well as hydroelasticity may matter.

关键词： hydroelastic model slow-drift motion instability slamming

Comparison of Impact Properties for Carbon and Low Alloy Steels

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Journal of Materials Science & Technology 2011年第10期27卷 931-936页

作者： o.H.Ibrahim Metallurgy Dept. Nuclear Research CentreAtomic Energy Authority

The impact properties of hot rolled carbon steel （used for the manufacture of reinforcement steel bars） and the quenched ＆ tempered （Q＆T） low alloy steel （used in the pressure vessel industry） were determined. The microstructure of the hot rolled carbon steel contained ferrite/pearlite phases, while that of the quenched and tempered low alloy steel contained bainite structure. Impact properties were determined for both steels by instrumented impact testing at temperatures between -150 and 200℃. The impact properties comprised total impact energy, ductile to brittle transition temperature, crack initiation and propagation energy, brittleness transition temperature and cleavage fracture stress. The Q＆T low alloy steel displayed much higher resistance to ductile fracture at high test temperatures, while its resistance to brittle fracture at low test temperatures was a little higher than that of the hot rolled carbon steel. The results were discussed in relation to the difference in the chemical composition and microstructure for the two steels.

关键词： Ferritic/pearlitic steel Bainitic steel Impact properties

High-temperature mechanical properties of aluminium alloys reinforced with titanium diboride (TiB_2) particles

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Rare Metals 2011年第2期30卷 200-205页

作者： J.ooro Ingeniería y Ciencia de los Materiales ETSI IndustrialesUniversidad Politécnica de Madridc/José Gutiérrez Abascal2.28006 MadridSpain

The physical and mechanical properties of metal matrix composites were improved by the addition of reinforcements. The mechanical properties of particulate-reinforced metal-matrix composites based on aluminium alloys （6061 and 7015） at high temperatures were studied. Titanium diboride （TiB2） particles were used as the reinforcement. All the composites were produced by hot extrusion. The tensile properties and fracture characteristics of these materials were investigated at room temperature and at high temperatures to determine their ultimate strength and strain to failure. The fracture surface was analysed by scanning electron microscopy. TiB2 particles provide high stability of the alumin- ium alloys （6061 and 7015） in the fabrication process. An improvement in the mechanical behaviour was achieved by adding TiB2 particles as reinforcement in both the aluminium alloys. Adding TiB2 particles reduces the ductility of the aluminium alloys but does not change the microscopic mode of failure, and the fracture surface exhibits a ductile appearance with dimples formed by coalescence.

关键词： metal-matrix composites aluminium high-temperature properties titanium diboride

The Group Method of Data Handling （GMDH） and Artificial Neural Networks （ANN）in Time-Series Forecasting of Rice Yield

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材料科学与工程（中英文B版） 2011年第3期1卷 378-387页

作者： Nadira Mohamed isa Shabri Ani Samsudin Ruhaidah Department of Mathematics Faculty of Science Universiti Teknologi Malaysia Skudai 81310 Johor Malaysia Department of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Skudai 81310 Johor Malaysia

Survival Analysis of CoVID-19 Patients Based on Different Levels of D-dimer and Coagulation Factors

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Biomedical and Environmental Sciences 2022年第10期35卷 957-961页

作者： Abolfazl Zendehdel Saeidreza Jamalimoghadamsiahkal Maedeh Arshadi Forough Godarzi Shokouh SHahrousvand Hamidreza Hekmat Ehsan Sekhavatimoghadam Seyedeh Zahra Badrkhahan Mina Riahi isa Akbarzadeh Mohammad Bidkhori Geriatric Department Associate professor of internal medicineZiaeian HospitalTehran University of Medical SciencesTehranIran Ziaeian Hospital Tehran University of Medical SciencesTehranIran Department of Epidemiology and Biostatistics School of Public HealthTehran University of Medical SciencesTehranIran Department of Cardiology School of MedicineZiaeian HospitalTehran University of Medical SciencesTehranIran Department of Geriatric Medicine School of MedicineZiaeian HospitalTehranIran Department of Health Services Management School of Health Managment and Information SciencesIran University of Medical SciencesTehranIran

CoVID-19 is a systemic disease that affects the respiratory,gastrointestinal,cardiovascular,hematopoietic,and immune systems[1].Several studies have shown that the SARS-Co V-2 can cause blood clots(thrombosis)in veins... 详细信息

关键词： Survival cardiovascular respiratory

木酚素二硫戊环类似物抑制γ-干扰素和脂多糖在巨噬细胞中诱生一氧化氮(英文)

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Acta Pharmacologica Sinica 2000年第10期21卷 36-43页

作者： isa M HUSSAINI,张奕华,Jeff J LYSIAK,Tsung Y SHEN Departments of Pathology University of Virginia Charlottesville VA 22908 USA Chemistry University of Virginia Charlottesville VA 22908 USA Departments of Pathology University of Virginia Charlottesville VA 22908 USA Chemistry University of Virginia Charlottesville VA 22908 USA

目的:研究木酚素二硫戊环类似物及血小板活化因子（PAF）受体拮抗剂L-659,989对PAF-受体结合,对γ-干扰素和脂多糖诱导的一氧化氮（No）生成,以及对iNoS mRNA表达的影响.方法:通过对兔血小板膜中3H标记的PAF-受体竞争结合试验来研究对P... 详细信息

目的:研究木酚素二硫戊环类似物及血小板活化因子（PAF）受体拮抗剂L-659,989对PAF-受体结合,对γ-干扰素和脂多糖诱导的一氧化氮（No）生成,以及对iNoS mRNA表达的影响.方法:通过对兔血小板膜中3H标记的PAF-受体竞争结合试验来研究对PAF-受体的拮抗作用;测定No的氧化产物亚硝酸盐来定量No的生成.用RNA印迹分析来研究对iNoS mRNA表达的影响.结果:二硫戊环类似物抑制No的生成,减少iNoS mRNA的表达,拮抗3HPAF受体.L-659,989对No生成和iNoS mRNA表达没有影响.受试物的PAF受体拮抗活性和iNoS抑制活性之间无简单关联.结论:木酚素二硫戊环类似物是iNoS表达的新型调控剂,具有抑制iNoS,诱导和拮抗PAF受体的双重活性.

关键词：木酚素类干扰素Ⅱ型脂多糖类血小板活化因子一氧化氮一氧化氮合酶