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Open journal of composite Materials 2012年第4期2卷 119-124页

作者： M. Lamichanne b. K. Rai S. R. Mishra V. V. Nguyen j. P. Liu Department of Physics The University of Memphis USA Department of Physics The University of Texas Arlington USA

composites of Smco5-FeNi and Smco5-Feco, hard-soft magnetic materials, have been synthesized via electroless plating of magnetically hard Smco5 powder particles with magnetically soft FeNi and Feco, respectively. The influence of coating thickness of soft magnetic layers on the structure and magnetic properties of the composite has been studied. Overall FeNi coating was found to be less dense compared to Feco for the same plating duration. Structurally the coat ing was found to be nodular in morphology. These coating have dramatic effect on the overall magnetic property of the composite. As compared to FeNi coated Smco5 composite, two-fold increase in the saturation magnetization has been observed upon coating Smco5 (Ms^28 emu/g) with Feco to a value 56 emu/g. The coercivity of composite powder was found to decrease with increasing the coating layer thickness. The absence of exchange spring behavior in the hard-soft composite is attributed to magnetically soft layer thickness exceeding the theoretical length limit for exchange-spring coupling.

关键词： Electroless Plating Hard-Soft composites Exchange Spring

Physicochemical characteristics of Water Samples collected from River Sokoto, Northwestern Nigeria

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Atmospheric and climate Sciences 2015年第3期5卷 194-199页

作者： M. I. O. Raji Y. K. E. Ibrahim b. A. Tytler j. O. Ehinmidu Department of Pharmaceutics and Pharmaceutical Microbiology Usmanu Danfodiyo University Sokoto Nigeria Department of Pharmaceutics and Pharmaceutical Microbiology Ahmadu Bello University Zaria Nigeria

Physicochemical parameters of surface water collected from six different points (P1 to P6) on River Sokoto were analysed during january (Dry Season) and August (Rainy Season), 2014 to determine its water quality using standard methods. The highest temperature of 25.6°c was recorded by P1 in dry season while P5 recorded the highest value of 29.2°c in rainy season. All the water samples were alkaline in dry season with the highest pH value of 8.50 in P5 and the least value of 8.02 in P6 whereas in rainy season, P1, P2 and P3 were slightly acidic while P5 and P6 were slightly neutral and P4 alkaline. The highest values of 510 μS/cm and 850.3 mg/l were recorded from P4 for electrical conductance and hardness respectively in the rainy season whereas in dry season, P5 and P4 had the highest values of 321 μS/cm and 282.8 mg/l respectively. The highest DO and bOD levels in dry season were 1.7 mg/l and 0.7 mg/l respectively in P1 and the least values were 0.7 mg/l and 0.2 mg/l respectively in P5. but in the rainy season, P6 recorded the highest DO value of 0.1 mg/l while P2 and P5 recorded the least value of 0.07 mg/l. For bOD, P5 had the highest value (2.13 mg/l) while P3 had the least value (0.20 mg/l). For cOD, the highest value (230 mg/l) was found in P4 and P6 and the least value (30 mg/l) was found in P1 in dry season while in the rainy season, P2 had the highest cOD value (1008 mg/l) and P4 had the least value of 32 mg/l. TDS and TSS values generally were higher in the rainy season than in the dry season due to higher amount of floating particles in the rainy season. While P1 and P6 recorded the highest values (800 mg/l and 700 mg/l respectively) in the rainy season, P4 recorded the least value of 100 mg/l in both seasons. The highest chloride level was found in P4 in the dry (100 mg/l) and rainy (180 mg/l) seasons with the least level in P2 (35 mg/l) in dry season and in P1 and P2 with the least level of 60 mg/l in the rainy season. The highest concentration

关键词： River Sokoto Seasonal Variation Dry Season Rainy Season Elemental constituents concentration

Medical Management of cesarean Scar Pregnancy at Latifa Hospital Dubai Health Authority, Dubai, UAE

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Open journal of Obstetrics and Gynecology 2020年第4期10卷 526-537页

作者： A. Ammar F. Nasrallah H. Adan j. Ali M. Mussa A. b. E. Fazari N. Alsawalhee Latifa Hospital for Women & children DHA Dubai UAE University of Medical Sciences & Technology Khartoum Sudan

Introduction: cesarean scar pregnancy (cSP) is defined as implantation of gestational sac at the site of cesarean scar. It’s a serious diagnosis that has become more prevalent in recent years and related to the increasing rate of cesarean sections reported worldwide. Identifying these cases and treating them is challenging, with no agreed upon universal protocol for successful treatment. We aim to evaluate the success rate and outcome of medical management for cesarean scar pregnancy. Methods: It was a retrospective descriptive study of all cesarean scar pregnancies managed at fetal medicine unit at Latifa Hospital in Dubai, UAE the main obstetrics & Gynecology tertiary hospital in Dubai Emirate, UAE from 2015 to 2017. certainly, a set of diagnostic criteria were implemented to confirm the diagnosis of cSP. The cases were then offered our proposed management which is systemic methotrexate injections ± KcL. Follow up made by serial βhcg and ultrasound scan. The data were collected used specified data collection sheet for this purpose then analyzed and presented using statistical package for social sciences (SPSS) version 26. Results: 33 cases of cesarean scar pregnancies are confirmed and medically managed during the study period. The study subjects composed of a group of patients who had a viable cSP and received local KcL injection + systemic methotrexate, a second group who had non-viable cSP and received systemic methotrexate 20 cases were viable pregnancies who received combined local potassium chloride plus systemic methotrexate, and 13 were non-viable received systemic methotrexate only. The mean gestational age at diagnosis was 8 weeks (SD ± 1.8). On average our cases had a history of 3 previous cesarean sections (range 1 - 6). Overall, the success rate calculated from our study population for medical management of cSP was 77.8%;this varied between viable cSP which had a success rate of 66.7% and non-viable cSP which had a success rate of 100%. The average pe

关键词： caesarean Scar Pregnancy Methotrexate Potassium chloride Maternal Morbidity

Dissociation of the N400 component between linguistic and non-linguistic processing: A source analysis study

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World journal of Neuroscience 2014年第1期4卷 25-39页

作者： Anne Gallagher Renée béland Phetsamone Vannasing Maria Luisa bringas Pedro Valdes Sosa Nelson j. Trujillo-barreto john connolly Maryse Lassonde centre de Recherche en Neuropsychologie et cognition Psychologie Department University of Montreal Montreal Canada centro de Neurosciencias Havana Cuba cHU Ste-justine Research center Montreal Canada International center for Neurological Rehabilitation (cIREN) Havana Cuba Language Memory & Brain Laboratories Department of Linguistics & Languages McMaster University Hamilton Canada

The N400 component is commonly associated with the detection of linguistic incongruity. A few studies have shown that the N400 can also be elicited by non-linguistic stimuli. Different spatiotemporal patterns were observed between the typical Linguistic N400 and the Non-linguistic N400, suggesting distinct brain generators. The aim of this study was to investigate the presence of an N400 in response to linguistic and non-linguistic stimuli, and to specify anatomical sources of both N400s using a novel analysis method: the bayesian Model Averaging (bMA) distributed source model. Picture-word and environmental soundpicture associations, either congruent or incongruent, were presented to ten young healthy adults while highdensity ERP recordings were made. Standard electrophysiological analyses confirmed that the N400 was not specific to linguistic incongruity but was also elicited by environmental sound-picture incongruities. Different topographic distributions were obtained for the Linguistic N400 and Non-linguistic N400. bMA analysis showed that the Linguistic N400 generators were mostly located in the left superior temporal gyrus, whereas the sources of the Non-linguistic N400 were identified mostly in the right middle and superior temporal gyri. Detection of linguistic incongruities recruited cerebral areas commonly associated with language processing, whereas non-linguistic incongruities recruited right cerebral regions usually associated with auditory processing of non-linguistic stimuli. The Linguistic and Non-linguistic N400s appear to be elicited by similar cognitive mechanisms assumed by different cerebral areas depending on the type of material to be processed. The present findings support the existence of parallel pathways for the processing of linguistic and non-linguistic incongruities.

关键词： Event-Related Potentials Incongruity Semantic Environmental Sounds Distributed Source Model bMA

contribution of piezoelectric effect,electrostriction and ferroelectric/ferroelastic switching to strain-electric field response of dielectrics

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journal of Advanced Dielectrics 2013年第1期3卷 53-63页

作者： G.Viola T.Saunders X.Wei K.b.chong H.Luo M.j.Reece H.Yan School of Engineering and Materials Science Queen Mary University of London Mile End Road London E14NSUK Nanoforce Technology Ltd Mile End Road London E14NSUK Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education&International center for Dielectric Research Xian jiaotong University Xian 710049P.R.China MIMOS Technology Park Malaysia 57000 Kuala LumpurMalaysia Shanghai Institute of ceramics chinese Academy of Sciences 215 Chengbei Road Shanghai 201800P.R.China

This paper presents a thorough study of the strain response of different types of electroceramics during dynamical electrical *** highlights important aspects to take into account in the experimental methodology and outlines general guidelines for the discussion and interpretation of the *** contributions of piezoelectric effect,electrostriction and ferroelectric/ferroelastic domain switching to the strain produced during the application of an alternating electric field are discussed by describing the strainelectric field(S-E)loops of different dielectric ceramics in which each of these contributions are *** particular,attention is given to the description of the strain evolution in the characteristic"butterfly loops"typically shown by ferroelectric *** strain-polarization loop is indicated as a useful means to reveal the interconnection between strain and polarization state during dynamical electrical *** rate is suggested as a powerful tool to obtain more detailed information regarding the mechanisms of the electric field-induced strain.

关键词： Ferroelectrics dielectrics domain switching strain polarization butterfly loop

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黑曲霉菌为宿主菌的重组表达性质粒的构建

同济大学学报（医学版） 2001年第3期22卷 1-3页

作者：刘钟滨 David j jeenes David b Archer 同济大学医学院微生物与免疫学教研室上海200331 InstituteofFoodResearch

目的　建立以pyrG基因为选择标志 ,以黑曲霉菌为宿主菌的蛋白质表达系统。方法　以PcR扩增获得的黑曲霉菌 pyrG基因的部分序列片段为探针作两次噬菌斑原位杂交 ,从黑曲霉菌ATcc 12 0 49基因文库中克隆获得长度为 9.8kb的DNA片段 ,将其... 详细信息

目的　建立以pyrG基因为选择标志 ,以黑曲霉菌为宿主菌的蛋白质表达系统。方法　以PcR扩增获得的黑曲霉菌 pyrG基因的部分序列片段为探针作两次噬菌斑原位杂交 ,从黑曲霉菌ATcc 12 0 49基因文库中克隆获得长度为 9.8kb的DNA片段 ,将其中含 pyrG基因的 2 .3kb片段亚克隆至表达性载体PIGF中 ,获得重组质粒。对克隆基因进行了全基因测定和分析。以黑曲霉菌ATcc 12 0 49的 pyrG缺陷株M 5 4为受体菌 ,用聚乙二醇 /氯化钙方法作基因转化实验 ,将重组质粒导入该受体菌并在其中表达。结果　从黑曲霉菌ATcc 12 0 49基因文库中克隆获得了pyrG基因 ,构建了含该基因的重组表达性载体 pYG1.2。序列分析表明该基因与黑曲霉菌L112的 pyrG基因编码序列的同源性为 93 .9% ,两者经推导的氨基酸的同源性为 98.9%。重组质粒 pYG1.2可使黑曲霉菌ATcc 12 0 49的 pyrG缺陷株M5 4发生基因转化 ,成为Pyr+ 。结论　在克隆了 pyrG基因的基础上成功构建了以 pyrG基因为选择标志。

关键词：重组质粒构建黑曲霉菌

Predicting Temper Embrittlement of 30cr2MoV Rotor Steel with Genetic Programming

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Predicting Temper Embrittlement of 30Cr2MoV Rotor Steel with...

Stress Analysis on Single-crystal Diamonds by Raman Spectroscopy 3D Mapping

第五届国际材料与热加工物理模拟及数值模拟学术会议

作者： Xiaoming cAO a Yongzhe FAN b Rina MA c An DU d School of Material Science and Engineering Hebei University of Technology Tianjin 300130 china

The genetic programming approach is proposed to predict temper embrittlement of rotor steel （30cr2MoV）. Two independent data sets are obtained experimentally: training data and verifying data. Peak current density of reactivation, temperature of electrolyte, the general chemical composition parameter （j-factor）, chemical composition of cr and S, hardness and the grain size parameter of the material are used as independent variables, while fracture appearance transition temperature as dependent variable. On the basis of training data, the best model was obtained by genetic programming, and the accuracy of it is verified with the verifying data. The prediction error of the model is within the scatter of ±20℃. The results suggest that, the prediction model obtained by genetic programming is feasible and effective.

关键词： steam turbine rotor temper embrittlement electrochemical polarization genetic programming

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Materials Sciences and Applications 2013年第3期4卷 191-197页

作者： E. j. Di Liscia F. álvarez E. burgos E. b. Halac H. Huck M. Reinoso Departamento de Física Comisión Nacional de Energía Atómica Buenos Aires Argentina Departamento de Física Comisión Nacional de Energía Atómica Buenos Aires Argentina Escuela de ciencia y Tecnología Universidad Nacional de San Martín Buenos Aires Argentina Departamento de Física Comisión Nacional de Energía Atómica Buenos Aires Argentina Escuela de ciencia y Tecnología Universidad Nacional de San Martín Buenos Aires Argentina consejo Nacional de Investigaciones científicas y Técnicas Buenos Aires Argentina. Departamento de Física Comisión Nacional de Energía Atómica Buenos Aires Argentina consejo Nacional de Investigaciones científicas y Técnicas Buenos Aires Argentina.

Results on stress analysis for single-crystal diamonds are presented. Isolated crystals were studied by Raman mapping and depth profiling techniques, using confocal microscopy. Diamonds were deposited on molybdenum and tantalum by hot filament and microwave cVD methods at growth rates between 10 and 30 μm·h-1. crystals from 10 to 40 μm size were examined. Local stress was evaluated by analyzing the position, broadening and splitting of the 1332 cm-1 Raman peak in a 3D mapping. For the (001) orientation, the most stressed zone was found at the center of the crystal base, close to the interface with the substrate: a Raman peak around 1340 cm-1 was measured, corresponding to a pressure c.a. 3 GPa, according to our dynamical calculations. This peak disappears few microns out of the center, suggesting that this highly concentrated stress sector was the nucleation zone of the crystal. A shifting and slight broadening of the 1332 cm-1 band was observed in the rest of the crystal. The causes of these effects are discussed: they proved not to be due to anisotropic stress but to refractive effects. Same results were found for different crystal sizes and growth rates.

关键词： Diamond Stress Raman Spectroscopy 3D Mapping

Effect of Elevated Air Temperature and carbon Dioxide Levels on Dry Season Irrigated Rice Productivity in bangladesh

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American journal of Plant Sciences 2018年第7期9卷 1557-1576页

作者： M. Maniruzzaman j. c. biswas M. b. Hossain M. M. Haque U. A. Naher A. K. choudhury S. Akhter F. Ahmed R. Sen S. Ishtiaque M. M. Rahman N. Kalra bangladesh Rice Research Institute (bRRI) Gazipur Bangladesh bangladesh Agricultural Research Institute (bARI) Gazipur Bangladesh bangabandhu Sheik Mujibur Rahman Agricultural University (bSMRAU) Gazipur Bangladesh Indian Agricultural Research Institute New Delhi India

Agricultural productivity is affected by air temperature and cO2 concentration. The relationships among grain yields of dry season irrigated rice (boro) varieties (bRRI dhan28, bRRI dhan29 and bRRI dhan58) with increased temperatures and cO2 concentrations were investigated for futuristic crop management in six regions of bangladesh using cERES-Rice model (DSSATv4.6). Maximum and minimum temperature increase rates considered were 0°c, +1°c, +2°c, +3°c and +4°c and cO2 concentrations were ambient (380), 421, 538, 670 and 936 ppm. At ambient temperature and cO2 concentration, attainable grain yields varied from 6506 to 8076 kg·ha-1 depending on rice varieties. In general, grain yield reduction would be the highest (13% - 23%) if temperature rises by 4°c and growth duration reduction would be 23 - 33 days. Grain yield reductions with 1°c, 2°c and 3°c rise in temperature are likely to be compensated by increased cO2 levels of 421, 538 and 670 ppm, respectively. In future, the highest reduction in grain yield and growth duration would be in cooler region and the least in warmer saline region of the country. Appropriate adaptive techniques like shifting in planting dates, water and nitrogen fertilizer management would be needed to overcome climate change impacts on rice production.

关键词： Maximum Temperature Minimum Temperature cO2 Levels Regional Variability Yield compensation