Is Anterior-Only Fixation Adequate for Three-Column Injuries of the Cervical Spine?

Sethy Siddharth Sekhar,Ahuja Kaustubh,Ifthekar Syed,Sarkar Bhaskar,Kandwal Pankaj 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.1

Study Design: Retrospective case series.Purpose: To analyze the clinical and functional outcomes of patients who have undergone anterior cervical discectomy/corpectomy and fusion (ACDF/ACCF) for a three-column cervical spine injury (CSI).Overview of Literature: The treatment of choice for a three-column CSI is an area of contention; however, combined anterior and posterior fixation is the preferred method explored in the literature. Studies have shown the superior biomechanical stability of posterior fixation over that of anterior fixation, but anterior-only approach in CSI has been proving its efficacy in recent times by providing reasonable stability with the maximum achievable decompression and fusion.Methods: Twenty-one patients undergoing ACDF/ACCF with a bone graft/metallic cage treatment for cervical injuries involving all three columns from January 2016 to July 2018 were included in the study. All of the patients were followed up monthly for the first 3 months and then every 6 months, until their last follow-up visit.Results: Nineteen patients had AO type C injuries and were managed with ACDF, and two patients with AO type B injuries were managed with ACCF. Fifteen had a complete spinal cord injury, while six had an incomplete spinal cord injury (American Spinal Injury Association B, C, and D). The mean segmental kyphosis at presentation of 12.2°±4.4° improved in the postoperative period to -7.2°±2.5°. At their final follow-up, all the patients showed clinical improvements when assessed by the Visual Analog Scale (6.8–1.8), Oswestry Disability Index score (59.7–34.9), and Spinal Cord Independence Measure score (24.8–36.4). One patient in the ACDF group needed a secondary posterior fixation because of instability.Conclusions: An anterior approach to the cervical spine in cervical fracture dislocations is an effective treatment showing an optimal recovery rate in terms of patient-reported outcomes and structural stability, with the added advantages of less blood loss and the fact that the technique requires less instrumentation.

Solid Waste Management in Preah Sihanouk Municipality

( Sour Sethy ),( Prak Visal ) 한국폐기물자원순환학회 2011 ISWA Vol.2011 No.0

COPD 환자의 객담에서 분리한 Nontypeable H. Influenzae(NTHI)의 H292 세포에 대한 침습도 (Invasion)와 cytokine 유발정도

안중현,( Sanjay Sethy ) 대한결핵 및 호흡기학회 2003 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.97 No.0

Microwave Assisted Energy Efficient Biodiesel Production from Crude Pongamia pinnata (L.) Oil Using Homogeneous Catalyst

Kumar, Ritesh,Sethy, A.K. Institute of Forest Science 2015 Journal of Forest Science Vol.31 No.1

Microwave assisted biodiesel production from crude Pongamia pinnata oil using homogeneous base catalyst (KOH) was unsuccessful because of considerable soap formation. Therefore, a two step process of biodiesel production from high free fatty acid (FFA) oil was investigated. In first step, crude P. pinnata oil was acid catalyzed using $H_2SO_4$ and acid value of oil was reduced to less than 4 mg KOH/g. Effect of sulfuric acid concentration, alcohol-oil molar ratio and microwave irradiation time on acid value of oil was studied. Result suggested that 1.5% $H_2SO_4$ (w/w), 6:1 methanol oil molar ratio and 3 min microwave irradiation time was sufficient to reduce the acid value of oil from 12 and 22 mg KOH/g to 2.9 and 3.9 mg/KOH/g, respectively. Oil obtained after pretreatment was subsequently used for microwave assisted alkali catalyzed transesterification. A higher biodiesel yield (99.0%) was achieved by adopting two step processes. Microwave energy efficiency during alkali catalyzed transesterification was also investigated. The results suggested a significant energy saving because of reduced reaction time under microwave heating.

Green synthesis of TiO2 nanoparticles using Cajanus cajan extract and their use in controlling the fouling of ultrafiltration PVDF membranes

Zeenat Arif,Naresh Kumar Sethy,Lata Kumari,Pradeep Kumar Mishra,Bhawna Verma 한국화학공학회 2019 Korean Journal of Chemical Engineering Vol.36 No.7

Polyvinylidene fluoride (PVDF)/TiO2 composite ultrafiltration membranes were fabricated using different loadings of TiO2 NPs synthesized by the green route using an extract of Cajanus cajan. XRD analysis confirmed the synthesis of TiO2 nanoparticles of size 10 nm using Debye Scherrer’s equation. High hydrophobicity of PVDF restricts its successful application due to fouling in the membrane. Therefore, composite membranes were prepared via the phase inversion route and characterized by contact angle and permeation tests. The BSA filtration experiments revealed that membrane with 0.5 wt% of TiO2 exhibits excellent hydrophilicity, permeation flux, high rejection ratio, and good antifouling performance. It was observed that the fouling characteristic of the membrane is governed by the surface roughness of the membrane, and with increasing loading of TiO2 the surface roughness decreases indirectly enhancing the antifouling property of membranes. The adsorption capacity of bovine serum albumin on the membrane surface decreased from 2.85 to 2.15mg cm2 as the TiO2 loading increased from 0 to 0.02 g TiO2/g PVDF. Fouling was found due to cake formation in ultrafiltration and can be explained by Hermia’s fouling model suggesting that the solutes are not deposited into the pores, which indicates that the fouling process is physically reversible.

An Unusual Case of Delirium after Restarting Clozapine

Sourav Khanra,Rati Ranjan Sethy,Sanjay Kumar Munda,Christoday Raja Jayant Khess 대한정신약물학회 2016 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.14 No.1

Clozapine is a gold standard medication and drug of choice in refractory schizophrenia. Among many of its fatal side effects, delirium is less reported and inconsistently recognized by clinicians. We here present a case of delirium which emerged during retreatment with clozapine in a patient of paranoid schizophrenia. A patient diagnosed with paranoid schizophrenia, was restarted on clozapine after he left medications and became symptomatic. He was delirious on 22nd day after clozapine was restarted. Clozapine was stopped and the patient was managed with standard treatment for delirium. After one week interval, clozapine was restarted. Delirium was not noted till 6 weeks of his hospital stay. Clozapine induced central anticholinergic toxicity or clozapine induced seizure might cause delirium in index case. Limited literature exist delirium with clozapine. Clinicians must have high index of suspicion to detect delirium during clozapine therapy. More researches should focus to explore the association between delirium and clozapine.

Microwave Assisted Energy Efficient Biodiesel Production from Crude Pongamia pinnata (L.) Oil Using Homogeneous Catalyst

Ritesh Kumar,A. K. Sethy 강원대학교 산림과학연구소 2015 Journal of Forest Science Vol.31 No.1

Microwave assisted biodiesel production from crude Pongamia pinnata oil using homogeneous base catalyst (KOH) was unsuccessful because of considerable soap formation. Therefore, a two step process of biodiesel production from high free fatty acid (FFA) oil was investigated. In first step, crude P. pinnata oil was acid catalyzed using H2SO4 and acid value of oil was reduced to less than 4 mg KOH/g. Effect of sulfuric acid concentration, alcohol-oil molar ratio and microwave irradiation time on acid value of oil was studied. Result suggested that 1.5% H2SO4 (w/w), 6:1 methanol oil molar ratio and 3 min microwave irradiation time was sufficient to reduce the acid value of oil from 12 and 22 mg KOH/g to 2.9 and 3.9 mg/KOH/g, respectively. Oil obtained after pretreatment was subsequently used for microwave assisted alkali catalyzed transesterification. A higher biodiesel yield (99.0%) was achieved by adopting two step processes. Microwave energy efficiency during alkali catalyzed transesterification was also investigated. The results suggested a significant energy saving because of reduced reaction time under microwave heating.

THEMIS: A Mutually Verifiable Billing System For the Usage of Cloud Resources in Cloud Computing Environment

Tribikram Pradhan,Santosh S Patil,Pramod Kumar Sethy 보안공학연구지원센터 2015 International Journal of Grid and Distributed Comp Vol.8 No.1

Cloud Computing Is an Important Transition That Makes Change In Service Oriented Computing Technology. With The Widespread Adoption Of Cloud Computing, The Ability To Record And Account For The Usage Of Cloud Resources In A Credible And Verifiable Way Has Become Critical For Cloud Service Providers And Users Alike. The Success of Such A Billing System Depends On Several Factors: The Billing Transactions Must Have Integrity and No Repudiation Capabilities; the Billing Transactions Must Be No Obstructive and Have A Minimal Computation Cost; And the Service Level Agreement (SLA) Monitoring Should Be Provided In A Trusted Manner. Existing Billing Systems Are Limited In Terms Of Security Capabilities or Computational Overhead. This Project Proposes A Secure And Non-Obstructive Billing System Called THEMIS As A Remedy For These Limitations. The System Uses A Novel Concept Of A Cloud Notary Authority For The Supervision Of Billing. The Cloud Notary Authority Generates Mutually Verifiable Binding Information That Can Be Used To Resolve Future Disputes Between A User And A Cloud Service Provider In A Computationally Efficient Way. Even Administrator of A Cloud System Cannot Modify or Falsify the Data.

Selective dissolution of copper from copper-chromium spent catalyst by baking–leaching process

P.K.Parhi,T.R. Sethy,P.C. Rout,K. Sarangi 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1

The selective leaching of copper from the spent Cu-Cr catalyst was carried out with H2SO4. The effect ofdifferent parameters such as acid concentration, pulp density, temperature and particle size on leachingwas investigated. The maximum extraction of copper and chromium was 67.25 and 2.3%, respectively atparticle size 45–53 mm, pulp density 2.5%, temperature 90 8C, time 180 min. Therefore, baking followedby leaching approach was adopted for dissolution of spent copper-chromium catalyst using H2SO4 toenhance the metal leaching efficiency. At the optimum baking–leaching condition i.e. baking time 2 h,baking temperature 300 8C, baking acid concentration 0.5 M, leaching temperature 35 8C, time 60 min,[H2SO4] 4%, P.D. 2.5%, the extraction of copper and chromium was 99.9% and 1.2%, respectively, ensuringthe selective dissolution of copper. The XRD and Fe-SEM-Edax characterization analysis of typicalsamples (original, baked mass and typical residue) were compared and reported. The XRD and Fe-SEMEdaxanalysis of the baked mass indicated the complete sulfation of copper and chromium by H2SO4yielding CuSO4 (H2O) and (Cr)2(SO4)3, respectively in solid phase. The absence of XRD peakscorresponding to CuSO4 H2O in the final typical leach residue (obtained at optimum baking–leachingcondition) confirmed the complete dissolution of copper from Cu-Cr catalyst.

A Dynamic-SUGPDS Model for Faults Detection and Isolation of Underground Power Cable Based on Detection and Isolation Algorithm and Smart Sensors

Rajpoot Sharad Chandra,Pandey Chanki,Rajpoot Prashant Singh,Singhai Sanjay Kumar,Sethy Prabira Kumar 대한전기학회 2021 Journal of Electrical Engineering & Technology Vol.16 No.4

This paper proposes a SUGPDS model based on Detection and Isolation algorithm and smart sensors, namely micro phasor measurement unit, smart sensing and switching device, phasor data concentrator, and ZigBee technology, etc. for the identifi cation, classifi cation, and isolation of the various fault occurs in the underground power cable in the distribution system. The proposed SUGPDS is a quick and smart tool in supervising, managing, and controlling various faults and issues and maintaining the reliability, stability, and uninterrupted fl ow of electricity. First, the SUGPDS model is analyzed using a distributed parameter approach. Then, the proper arrangement of the system required for the implantation of SUGPDS is demonstrated using fi gures. The Phasor data concentrator plays an essential role in developing the detection and classifi cation report for identifi cation and classifi cation. Finally, smart sensing and switching device installed at a diff erent location isolated the faulty phase from a healthy network. This approach helps to decrease power consumption. Hence, SUGPDS has super abilities compared to the underground power distribution system. The eff ectiveness of the proposed method and model is demonstrated via fi gures and tables