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Cut Throat Injuries—A Retrospective Study at a Tertiary Referral Hospital

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International Journal of Otolaryngology and Head & Neck Surgery 2014年第6期3卷 323-329页

作者： Suman Arasikere Panchappa Dhinakaran natarajan Thangaraj Karuppasamy Alaguvadivel Jeyabalan Radhakrishnan Kailasam Ramamoorthy Sivasubramanian Thirani Rajaganesh Kutuva Swamirao Department of ENT Madurai Medical College Madurai India

Objective: To analyze the socio demographic pattern, sex and age ratio, common causes, the most common site and extent of the injury in the patients with cut throat injury at our hospital. To compare the same with previous similar studies conducted at other centers in different parts of the world. Setting: Department of ENT, Government Rajaji Hospital, Madurai, India from January 2013 to June 2014. Methods: A total of 51 cases of cut throat injury were included in the study. Separate proforma was prepared to collect the patients’ data. Structured questionnaire was offered. Results: 51 cases of cut throat injury patients were included in the study. Age varied from 4 years to 80 years. Out of 51 cases, there were 43 males, 7 females and one male child. Male to female ratio was 6.2:1. All the patients were belonging to lower socioeconomic status (Kuppusamy class 5). Amongst them 26 cases (50.98%) were due to homicidal attack;13 cases (25.49%) due to suicidal attempt;7 cases (13.72%) due to road traffic accident;4 cases (7.84%) due to bull gore injury;1 case (1.96%) due to accidental fall. Emergency tracheostomy was done in 16 cases (33.33%). An average hospital stay for most of the patients was less than 3 weeks. 2 victims (3.92%) died due to haemorhage, aspiration pnuemonia and septicemia. Conclusions: Our study found that the majority of the victims were males of age between 20 years to 40 years from poor socioeconomic status. Social commitment and political motivation, decrease in the poverty, individual awareness, increase in economic growth, and literacy rate will prevent the cut throat injuries. Early and improved management will reduce the mortality and morbidity.

关键词： Cut Throat Injury Treatment Outcome

Empty Sella [Presenting as Hypopituitarism] and Platybasia Secondary to Essential Fatty Acids Deprived Diet. Proof of Basic Concept Study by Retrospective Analysis

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Open Journal of Preventive Medicine 2019年第8期9卷 95-104页

作者： Elizabeth Jeyavardhini Samuel Darmalingam S. natarajan Ramalingam Celestine Raj Manohar Sundararajan Veerakesari Uma Kanthan Chetty Kanagaraj Karpagam Faculty of Medical Sciences and Research Coimbatore India

Background: Universal concern is an increased prevalence of morbidity, mortality;with improper comprehension, the globe has implemented, non evidence-based medical practice, without therapeutic indication, therapeutic protocols, policies-contraception, abortion, annihilating human race by therapy, destroying germ cells with consecutive systemic inflammatory response syndrome, associated with decreased androgen oestrogen resulting in metabolic syndrome, increased neoplasms—due to lacuna of this comprehension—cholesterol was blamed, resulting in essential fatty acids deprived diet, promoting sunflower seed oil, refined oil, lipid-lowering agents prescription like water, for the past >40 years;the tragedy of this false concept of refined oil, essential fatty acids deprived diet, [against God-ordained marvelous cell metabolism, from cholesterol] resulting in degenerative diseases, defaulted genomic repertoire, as cause and effect phenomenon in the two following morbid, fatal case presentations;contraception, abortion is the culprit and not cholesterol which is the basic life moiety of cell membrane, cell metabolism governing steroid hormones-androgen oestrogen derived from cholesterol. Case 1: 76-year-old male, vegetarian, presented with lethargy, hypotension, unexplained hyponatremia, on fludrocortisone for 2 years. MRI detected empty sella;hence hypopituitarism with cortisol deficiency, resulting in hyponatremia was considered and with hydrocortisone replacement, patient improved. Low levels of LDL, HDL, suggested chronic [>40 years] deprivation of diet containing essential fatty acids had resulted in degenerative—empty sella status with hypopituitarism. Case 2: 17-year-old girl presented with headache, vomiting, feeble pulse;6 months prior platybasia had been diagnosed and she had undergone corrective neurosurgery, to widen bilaterally, narrowed, base of skull foramina, to prevent compression on the exiting neurovascular bundles;urgent CT scan of brain confirmed sign

关键词： Empty Sella Syndrome Platybasia Hyponatremia

Recovery of Sillimanite from Beach Sands--An Operator＇s Nightmare？

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Journal of Earth Science and Engineering 2013年第4期3卷 270-281页

作者： Chivukula Venkata Gopala Krishna Murty Leon Rademeyer natarajan JaiSankar Patruni Bhavya Manjeera Prasana-sampath Challa Venkata Ramachandra Murthy Trimex Sands Private Limited Srikakulam Chinavatsavalasa 532404 Andhra Pradesh India Department of Chemical Engineering Andhra University College of Engineering (A) Visakhapatnam 530003 India

Sillimanite, chemically named aluminum silicate, 3Al2O3SiO2 is one of the three forms of alumino silicate polymorphs and commonly encountered in aluminous metamorphic, plutonic and volcanic rocks and their weathering products. Traditionally in India, sillimanite is upgraded by froth floatation technique using oleic acid as a collector cum frother, sodium silicate as depressant and soda ash as pH regulator. At TSPL （Trimex Sands Pvt Ltd）, conventional mechanical float cells are installed to float sillimanite. In addition to the usual problems associated with conventional cells, poor flow ability of the sillimanite concentrate is experienced in dry circuit due to the presence of sodium oleate. Fine garnet in the sillimanite concentrate contributes to high iron content in the final product, making sillimanite separation a nightmare for operators （lower recoveries coupled with inferior grades）. Various efforts were made to improve the performance of the circuit such as introduction of additional frother like MIBC （methyl ISO butyl carbinol）, optimizing the operating parameters such as pulp density, collector dosage, depressant dosage, air flow rate, pH etc., use of collector aids, stage wise addition of reagents etc.. The challenges faced to produce a sillimanite product with stringent quality norms and the efforts made to improve the grade and recovery are described in this paper.

关键词： Sillimanite froth flotation conventional mechanical cell.

Influence of Picric Acid on the SHG Efficiency of L-Prolinium Tartrate Crystals

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Journal of Minerals and Materials Characterization and Engineering 2011年第10期10卷 913-921页

作者： S. natarajan K. Moovendaran J. Kalyana Sundar G. Bhagavannarayana S.A. Martin Britto Dhas Material Characterization Division National Physical Laboratory New Delhi 110012 India School of Physics Madurai Kamaraj University Madurai-625 021 India

Single crystals of the NLO material L-Prolinium tartrate (LPT) have been grown in the presence and absence of picric acid, by slow evaporation technique. Good quality crystals were harvested within 30 days. The grown crystals were characterized by single crystal X-ray diffraction. The quality of the crystals grown in the presence and absence of picric acid was examined by high resolution X-ray diffractometry (HRXRD). Fourier transform infrared spectroscopy (FTIR) and Fourier transform Raman spectroscopy were used to confirm the presence of the functional groups of L-Prolinium tartrate and the absence of picric acid in the crystals. The thermal stability and the trend of decomposition of the grown crystals were analyzed by thermo gravimetric analysis (TGA). The influence of picric acid on the second harmonic generation efficiency was studied by Kurtz and Perry method. It was observed that the SHG efficiency increased by about 2.3 times compared to that of normal LPT crystals. The results are discussed in detail.

关键词： organic compounds crystal growth X-ray diffraction thermo-gravimetricanalysis

Complexity analysis and dynamic characteristics of EEG using MODWT based entropies for identification of seizure onset

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The Journal of Biomedical Research 2020年第3期34卷 213-227页

作者： Shivarudhrappa Raghu natarajan Sriraam Yasin Temel Shyam Vasudeva Rao Alangar Sathyaranjan Hegde Pieter L Kubben Department of Neurosurgery School for Mental Health and Neuroscience of the Faculty of HealthMedicine and Life SciencesMaastricht UniversityMaastricht 6200 MDthe Netherlands Center for Medical Electronics and Computing M.S.Ramaiah Institute of TechnologyBengaluruKarnataka 560054India Department of Neurosurgery Maastricht University Medical Center Department of Neurosurgery Maastricht UniversityMaastricht 6200 MDthe Netherlands Institute of Neuroscience Ramaiah Medical College and HospitalsBengaluruKarnataka 560054India

In this paper,complexity analysis and dynamic characteristics of electroencephalogram(EEG) signal based on maximal overlap discrete wavelet transform(MODWT) has been exploited for the identification of seizure *** wavelet-based studies were well suited for classification of normal and epileptic seizure EEG,we have applied MODWT which is an improved version of discrete wavelet transform(DWT).The selection of optimal wavelet sub-band and features plays a crucial role to understand the brain dynamics in epileptic ***,we have investigated MODWT using four different wavelets,namely Haar,Coif4,Dmey,and Sym4 sub-bands until seven ***,we have explored the potentials of six entropies,namely sigmoid,Shannon,wavelet,Renyi,Tsallis,and Steins unbiased risk estimator(SURE) entropies in each *** sigmoid entropy extracted from Haar wavelet in sub-band D4 showed the highest accuracy of 98.44% using support vector machine classifier for the EEG collected from Ramaiah Medical College and Hospitals(RMCH).Further,the highest accuracy of 100% and 94.51% was achieved for the University of Bonn(UBonn) and CHB-MIT databases *** findings of the study showed that Haar and Dmey wavelets were found to be computationally economical and expensive ***,in terms of dynamic characteristics,MODWT results revealed that the highest energy present in sub-bands D2,D3,and D4 and entropies in those respective sub-bands outperformed other entropies in terms of classification results for RMCH ***,using all the entropies,sub-bands D5 and D6 outperformed other sub-bands for UBonn and CHB-MIT databases *** conclusion,the comparison results of MODWT outperformed DWT.

关键词： electroencephalogram epileptic seizures entropy maximal overlap discrete wavelet transform sigmoid entropy support vector machine

Determination of Di-n-Butyl Phosphate in Organic Streams of FBTR Mixed Carbide Fuel Reprocessing Solution by Gas Chromatographic Technique

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Journal of Analytical Sciences, Methods and Instrumentation 2011年第2期1卷 31-35页

作者： P. Velavendan S. Ganesh N.K. Pandey U. Kamachi Mudali R. natarajan 不详

The present work describes the amount of Di-n- butyl phosphate (DBP) produced when PUREX solvent (30%tri-n-butyl phosphate (TBP) mixed with 70% hydrocarbon diluent) is exposed to intensive radiolytic and chemical at- tack during the separation of uranium and plutonium from fission products of FBTR mixed carbide fuel reprocessing solution. DBP is the major degradation product of Tri-n-butyl phosphate (TBP). Amount of DBP formed in the lean organic streams of different fuel burn-up FBTR carbide fuel reprocessing solutions were analyzed by Gas Chromatographic technique. The method is based on the preparation of diazo methane and conversion of non-volatile Di-n-butyl phosphate in to volatile and stable derivatives by the action of diazomethane and then determined by Gas Chromatography (GC). A calibration graph was made for DBP over a concentration in the range from 200 to 1800 ppm with correlation coefficient of 0.99587 and RSD 1.2%. The degraded 30% TBP-NPH solvent loaded with heavy metal ions like uranium was analyzed after repeated use and results are compared with standard ion chromatographic technique. A column comparison study to select of proper gas chromatographic column for the separation of DBP from other components in a single aliquot of injection is also examined.

关键词： Gas Chromatography Flame Ionization Detector Diazomethane Di-n-butyl Phosphate PUREX Process Degradation of TBP Lean organic Streams Carbide Fuel

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裁员风起赛意传到华尔街

商业周刊（中文版） 2022年第19期 20-21页

作者： Sridhar natarajan Hannah Levitt 王非(译) 不详

疫情过后,以高盛为首,华尔街大小投行的老板都开始裁员,并且可能减少奖金发放。摩根大通的高管曾经左右为难。2021年华尔街刮起跳槽风潮,但该行首席执行官杰米·戴蒙(Jamie Dimon)要求美国的员工定期回办公室工作。当时新冠病例仍在攀升... 详细信息

疫情过后,以高盛为首,华尔街大小投行的老板都开始裁员,并且可能减少奖金发放。摩根大通的高管曾经左右为难。2021年华尔街刮起跳槽风潮,但该行首席执行官杰米·戴蒙(Jamie Dimon)要求美国的员工定期回办公室工作。当时新冠病例仍在攀升,一些部门经理不愿强制要求员工回办公室,担心他们会辞职。很多部门已经备受员工辞职困扰,还在努力填补职位空缺。

关键词：首席执行官职位空缺投行高盛奖金发放华尔街裁员高管

基于Helmholtz方程最小二乘法声全息复杂结构振动噪声响应分析(英文)

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汽车工程学报 2011年第4期1卷 237-247页

作者： Sean F.Wu Logesh Kumar natarajan 韦恩州立大学机械工程系

论述了以车身模型为例的复杂结构声振响应的分析方法。分析的目的是为了识别对车内声场的声压有关键贡献的板件。为此,本文采用基于Helmholtz方程最小二乘法的近场声全息(NAH)技术,利用对任意形状的表面进行近场的声压测量结果对结构表... 详细信息

论述了以车身模型为例的复杂结构声振响应的分析方法。分析的目的是为了识别对车内声场的声压有关键贡献的板件。为此,本文采用基于Helmholtz方程最小二乘法的近场声全息(NAH)技术,利用对任意形状的表面进行近场的声压测量结果对结构表面的振动噪声响应进行重构。首先,对部件表面法向振动速度和表面的声压分布进行了重构,其次计算了部件表面声强分布以及每个部件的声功率流与车内任意一点声压的相关程度。每个部件对车内一点声压的相对贡献取决于板件到该点的声功率流。利用基于HELS近场声全息只需要进行一组声压测量就可以对板件的结构噪声进行分析,并且能够进行板件相对贡献量的研究。本文的分析结果得到了试验结果的证明,验证试验是在全消声室内进行的。

关键词： NAH HELS 声场重构

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充分利用炭黑废热有效降低生产成本

炭黑工业 2004年第6期 14-18页

作者： C．P．natarajan 朱永康

炭黑已经成为典型的无法控制原料或产品价格的行业。炭黑原料(CBFS)大部分是由石油炼制厂生产的，其价格会随着世界原油价格而发生波动。由于炭黑70％左右被用于轮胎制造，其销售价格要受汽车市场变化的影响。这些价格是我们无法控制的... 详细信息

炭黑已经成为典型的无法控制原料或产品价格的行业。炭黑原料(CBFS)大部分是由石油炼制厂生产的，其价格会随着世界原油价格而发生波动。由于炭黑70％左右被用于轮胎制造，其销售价格要受汽车市场变化的影响。这些价格是我们无法控制的。因此，优化生产工艺，提高生产率和产量，创造额外的收益，

关键词：降低生产成本炭黑原油价格汽车市场产品价格行业销售价格原料轮胎制造波动