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流动注射编结反应器火焰原子吸收光谱法测定水样中三价铁和二价铁

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冶金分析 2012年第4期32卷 57-61页

作者：王中瑗张宏康方宏达苏耀东 mittal G S 国家海洋局南海环境监测中心广东广州510300 仲恺农业工程学院轻工食品学院广东广州510225 同济大学化学系上海200092 University of Guelph Guelph NIG 2W1 Canada

建立了流动注射(FI)编结反应器(KR)在线预富集与火焰原子吸收光谱(FAAS)联用非分离状态下测定铁的价态的新方法。先用FAAS测出Fe(Ⅱ)和Fe(Ⅲ)的总浓度,然后通过FI-KR预富集FAAS检测之后所得到的浓集系数(EF)的差异,求出Fe(Ⅱ)和Fe(Ⅲ)... 详细信息

建立了流动注射(FI)编结反应器(KR)在线预富集与火焰原子吸收光谱(FAAS)联用非分离状态下测定铁的价态的新方法。先用FAAS测出Fe(Ⅱ)和Fe(Ⅲ)的总浓度,然后通过FI-KR预富集FAAS检测之后所得到的浓集系数(EF)的差异,求出Fe(Ⅱ)和Fe(Ⅲ)的浓度比值,根据总浓度和浓度比值求出Fe(Ⅱ)和Fe(Ⅲ)各自的浓度。对络合剂的种类、流速和浓度及体系pH值、样品进样时间和流速、洗脱剂种类和流速对测定的影响进行了研究,并确定了最佳实验条件。采用本方法对实际水样进行测定,结果与邻菲啰啉分光光度法相一致,相对标准偏差(n=11)均小于3.8%。

关键词：流动注射非分离状态铁(Ⅱ) 铁(Ⅲ)

Dual Artificial Neural Network for Rainfall-Runoff Forecasting

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Journal of Water Resource and Protection 2012年第12期4卷 1024-1028页

作者： Pallavi mittal Swaptik Chowdhury Sangeeta Roy Nikhil Bhatia Roshan Srivastav MBS VIT University Vellore India

One of the principal issues related to hydrologic models for prediction of runoff is the estimation of extreme values (floods). It is well understood that unless the models capture the dynamics of rainfall-runoff process, the improvement in prediction of such extremes is far from reality. In this paper, it is proposed to develop a dual (combined and paralleled) artificial neural network (D-ANN), which aims to improve the models performance, especially in terms of extreme values. The performance of the proposed dual-ANN model is compared with that of feed forward ANN (FF-ANN) model, the later being the most common ANN model used in hydrologic literature. The forecasting exercise is carried out for hourly river flow data of Kolar Basin, India. The results of the comparison indicate that the D-ANN model performs better than the FF-ANN model.

关键词： Forecasting Hybrid model ANN Floods Non Linear

流动注射与火焰原子吸收光谱联用测定大米中的痕量铜

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中国粮油学报 2012年第5期27卷 102-106页

作者：张宏康王中瑗方宏达 Gauri S mittal 仲恺农业工程学院轻工食品学院广州510225 国家海洋局南海环境监测中心广州510300 University of Guelph Guelph OntarioCanada N1 G 2W1

建立了流动注射在线编结反应器预富集与火焰原子吸收光谱联用测定大米中痕量铜的吸力洗脱方法。进样流速6.0 mL/min;进样时间60 s,测定200μg/L的铜溶液,浓集系数(EF)由传统方法的4.5提高到13.5;检出限为5.4μg/L,测样频率为37/h,相对... 详细信息

建立了流动注射在线编结反应器预富集与火焰原子吸收光谱联用测定大米中痕量铜的吸力洗脱方法。进样流速6.0 mL/min;进样时间60 s,测定200μg/L的铜溶液,浓集系数(EF)由传统方法的4.5提高到13.5;检出限为5.4μg/L,测样频率为37/h,相对标准偏差(RSD,n=11)为2.3%,以0.01%的三乙醇胺(TEA)为掩蔽剂,铜在大米中的回收率为96.4%～97.8%。

关键词：流动注射吸力洗脱火焰原子吸收大米铜

Immunological Variations in Epileptic Children

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Open Journal of Applied Sciences 2013年第1期3卷 71-91页

作者： Sanjeev Kumar Vinod Kumar D. C. Jain R. mittal Department of Mathematics Shri. K.K. Jain College Khatauli India Department of Neurology Safdarganj Hospital New Delhi India Department of Physics Medical Physics Research Laboratory D.A.V. (P.G.) College Muzaffarnagar India

Epilepsy is one of the most frequent neurological problems. Despite of the advances and improvements in treatment of seizure disorders, immunological alterations such as immunoglobulins and complements have been measured. The levels of IgG in epileptic patients are found to be higher than controls. The levels of IgA, IgM, C3 and C4 were found to be lower in all the controls. Student’s t-test were also applied. Multiple and regression analysis, have been also carried out. A trend has also set up in the present study. An alteration in the immune mechanism of epileptic patients is required. Ketogenic diet may be given and the balance of trace elements like Na, K, Zn, Fe, Ca, Mg and Cu may be maintained to alter the immune mechanism of the epileptic patients. Green leafy vegetables may be given to the patients to control the seizure. Immunity is related with the food we eat. By adjusting the immunity with proper diet the severity of epileptic attack or any disease may be reduced.

关键词： Epilepsy Immunoglobulins Central Nervous System Complements

Trace Elemental Analysis in Epileptic Children

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Open Journal of Applied Sciences 2013年第8期3卷 449-476页

作者： Sanjeev Kumar V. Kumar Reena mittal D. C. Jain Department of Mathematics Shri K.K. Jain College Muzaffar Nagar India Department of Neurology Safdarganj Hospital New Delhi India Department of Physics Medical Physics Research Laboratory D.A.V. (P.G.) College Muzaffar Nagar India

We have measured trace elements in epileptic patients. Levels of trace elements are very fluctuating in comparison to the healthy controls. The levels of Zn, Fe and Cu are higher in comparison to healthy normal children about 64%, 55% and 33% respectively. The levels of Cu are just fifty percent to levels of Zn. The levels of Ca, K and Mg are higher about 10%, 9.027% and 4.2% in comparison to normal children. Sodium levels were very low in comparison to all the trace elements and are higher about 3.2% than controls. The multiple correlation coefficients between Na, K and Ca, i.e. (***) has a value 0.4993 in comparison to healthy children. Multiple correlation coefficients between Fe, Cu and Zn, i.e. (***) has a value 0.4366. The multiple correlation coefficients *** and?*** are found lower. These elements were strongly correlated with other. The multiple correlation coefficients such as ***, ***, ***, ***, ***, *** and *** were also evaluated and found on higher side from normal range. Trace elements may act as a catalytic agent for enzyme system of the cells. The minimum requirements of living objects for essential trace elements may be expressed in proportions or concentrations of the total dry food taken everyday. A tolerance of the human system may be fluctuated according to intake of these elements.

关键词： Flame Atomic Absorption Spectroscopy (FAAS) Grand-Mal Epilepsy (GME) Cerebrospinal Fluid (CSF) Central Nervous System (CNS) and Serum

Pressure dependence of Raman and Infrared active phonon modes in LiYF4 and LiYbF4

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Pressure dependence of Raman and Infrared active phonon mode...

GLAUCOMA'S IMPACT ON QUALITY-OF - LIFE AND ITS RELATION TO CLINICAL INDICATORS

18th International Conference on High Pressure Science and Technology

作者： A.Sen S.L.Chaplot R.mittal Solid State Physics Division Bhabha Atomic Research CentreTrombayMumbai 400085India

The tetragonal fluoroscheelites,LiYF andLiYbF,while doped with trivalent rare earth ions(***,Eu..),act as a formidable host to yieldhighly efficient solid state lasers due mainly to theirlow lasing thresholds and hence,are of much demandin *** studies have already beenpursued in exploring these kinds of complex crystalswith a wide range of detail,on extension of whichour present work *** report here the latticedynamical calculations of pressure dependence of theRaman as well as the Infrared active phonon modesin the fluoroscheelite system,followed by a handful

关键词： High pressure Optical modes

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国际眼科杂志 2003年第1期3卷 22-23页

作者： S.Chaturvedi A.Mehrotra S.mittal H.Bahadur Himalayan Institiute of Medical Sciences IndiaHimalayan Institiute of Medical Sciences IndiaHimalayan Institiute of Medical Sciences IndiaHimalayan Institiute of Medical Sciences India

Traditionally, clinical indicators like IOP, Visual acuity, Peri-metric findings and side effects of drugs have been used to monitor and evaluate the success or failure of treatment modalities in ***'s self assessment provides information on direct visual limitations consequent to disease and may be a more pertinent measure of visual functions. Showing a way to

关键词：青光眼视力损害生活质量临床指标影响

Spontaneous atraumatic dislocation of sternoclavicu- lar joint in Reiter＇s syndrome

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Chinese Journal of Traumatology 2012年第4期15卷 251-253页

作者： Vijay Kumar Digge Sanjay Meena Shah Alam Khan Ravi mittal Department of Orthopaedics All India Institute of Medi-cal Sciences(AIIMS)Ansari NagarNew Delhi 110029India

Reactive arthritis or Reiter＇s syndrome characteristically affects the joint of the lower limb in an asymmetrical pattern. Usually it does not affect the axial skeleton or upper limbs. Although cases of atraumatic at- lantoaxial subluxations have been reported, no case of spon- taneous sternoclavicular dislocation in Reiter＇s syndrome has been reported. This paper describes a case of a 26 year old male patient who developed a spontaneous posterior sternoclavicular joint dislocation. No attempt of reduction was made and the patient was managed conservatively with good results.

关键词： Arthritis, reactive Sternoclavicularjoint Dislocations

Surgical Management of Spondylolisthesis by Pedicular Screw Rod System and Postero-Lateral Fusion

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Open Journal of Orthopedics 2015年第6期5卷 163-174页

作者： M. Chaitanya Ankur mittal Ramprasad Rallapalli Ravi Teja Y. Siva Prasad Department of Orthopaedics Narayana Medical College and Hospital Nellore India

Introduction: Incidence of spondylolisthesis in general population is 5% - 7%. No matter what the etiology is, patients usually have significant functional disability. Few studies have investigated the long term effect of posterolateral fusion on functional outcome. Objectives: To study the efficacy of posterolateral fusion in spondylolisthesis especially in terms of functional outcome. Methodology: From July 2010 to June 2012, a total of 86 patients, operated with postero-lateral fusion were followed up and evaluated based on VAS for low back pain, ODI and neurological deficits. Results: Follow up was 83% of original study population (86). Average follow up was 13 months. The mean difference between pre-operative and post-operative VAS at final follow up was 3.5 cms (SD = 2.94);ODI was 28% at 4 months and 36% at 8 months. Claudication pain relieved in all;functional outcome was good in 67%, fair in 27.5% and failed in 5.5%;75% had fusion at an average of 5.5 months. Conclusion: Posteriolateral fusion is still a safe, promising and appealing technique.

关键词： Spondylolisthesis Posterolateral Fusion Functional Outcome