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Journal of Rare Earths 2024年第1期42卷 46-56,I0002页

作者： L.Vijayalakshmi k.naveen kumar Jong Dae Baek Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Mechanical Engineering Yeungnam UniversityGyeongsan38541Republic of Korea

A set of co-doped(Tb^(3+)/Dy^(3+))lithium zinc borate(LZB)glasses were developed by melt *** structural evaluation was performed for synthesized glassy *** Dy^(3+)and Tb^(3+)individually doped glasses exhibit intense yellow and green luminescence bands at 575 nm(^(4)F_(9/2)→^(6)H_(13/2))and543 nm(^(5)D_(4)→^(7)F_(5)),*** sensitization effect of Dy^(3+)on Tb^(3+)was analyzed by increasing the Tb^(3+)content with respect to the optimum Dy^(3+)content(0.5 mol%)in Dy^(3+)/Tb^(3+).The spectral overlay of Dy^(3+)luminescence and Tb^(3+)absorption profiles,Dy^(3+)/Tb^(3+)PL spectra under different excitations 352,362,376,and 385 nm,shortening decay lifetimes of Dy^(3+)in Dy^(3+)/Tb^(3+)co-activated glasses,energy transfer(ET)parameters,chromaticity coordinates and their corresponding correlated temperatures all help to explain ET from Dy^(3+)to Tb^(3+).At 385 nm of Dy^(3+)excitation,the optimized co-activated(0.5Dy^(3+)+1.0Tb^(3+)):LZB glass displays cool white light *** non-radiative ET from Dy^(3+)to Tb^(3+)is dominated by electric dipole-dipole interaction and its ET efficiency was calculated to be 63%.At the same time,reverse ET from Tb^(3+)to Dy^(3+)was also *** shift in color coordinates from dominant yellow to greenish-yellow,green and white light emission suggests that Dy^(3+)/Tb^(3+)coactivated LZB glasses can be a potential candidate for UV converted multicolor and white light emitting devices.

关键词： Rare earths Photoluminescence Energy transfer Spectral overlap Decay lifetime Multicolor emitting LEDs

Robust color purity of reddish-orange emission from Sm^(3+)-activated La10W22O81 biocompatible microphosphors for solid state lighting and anticancer applications

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Journal of Rare Earths 2023年第12期41卷 1850-1859,I0001页

作者： k.naveen kumar L.Vijayalakshmi Gayeon Lee Gumin kang Jiseok Lim Jungwook Choi School of Mechanical Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea Department of Automotive Engineering Yeungnam UniversityGyeongsanGyeongbuk38541Republic of Korea School of Mechanical Engineering Chung-Ang UniversitySeoul06974Republic of Korea Nanophotonics Research Center Korea Institute of Science and TechnologySeoul2792Republic of Kora

We synthesized reddish-orange luminescent La_(10)W_(22)O_(81)(LWO):Sm^(3+)microphosphors by hydrothermalassisted solid-state reaction.X-ray diffraction analysis reveals that all the studied phosphors crystallize in an orthorhombic structure in the Pbcn space group(60),Field emission scanning electron microscopy indicates that the LWO:1.5 mol% Sm^(3+)phosphor displays a smooth-surfaced hexagonal rod-like shape,with a closed shape at both ends,and high-resolution transmission electron microscopy demonstrates a robust crystalline *** chemical composition and valence states of the phosphor were investigated using X-ray photoelectron *** 403 nm excitation,LWO:1.5 mol% Sm3+exhibits maximum intensity with the strongest band at 596 nm(^(4)G_(5/2)→^(6)H_(7/2)) in the reddish-orange *** intensity of Sm^(3+) emission decreases beyond 1.5 mol% owing to concentration quenching regulated by dipole-quadrupole interaction between Sm^(3+)*** optimized microphosphor LWO:1.5 mol% Sm^(3+)exhibits color coordinates(0.5760,0.4207),which is close to that of the Amber LED-NSPAR 70 BS(0.570,0.420),displaying the highest color purity of 99.2% and correlated color temperature of 1694 *** addition,both breast cancer cells MCF-7 and normal lung fibroblasts WI-38 were tested for toxicity with the optimized *** is found that the LWO:1.5 Sm^(3+)microphosphor is extremely toxic to cancer cells,but not to normal *** on these results,LWO:Sm^(3+)microphosphor can serve as a biomedical candidate for the treatment of cancer,as well as a potential multicolor emitting material for w-LEDs.

关键词： Sm^(3+):La_(10)W_(22)O_(81) Reddish-orangeemission Color purity Photonic applications Anticancer Rareearths

Advancing orthopaedic trauma care through WhatsApp:An analysis of clinical and non-clinical applications,challenges,and future directions

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World Journal of Orthopedics 2024年第6期15卷 529-538页

作者： Ravi Saini Madhan Jeyaraman naveen Jeyaraman Vijay kumar Jain Swaminathan Ramasubramanian karthikeyan P Iyengar Department of Orthopaedics Atal Bihari Vajpayee Institute of Medical SciencesDr Ram Manohar Lohia HospitalNew Delhi 110001India Department of Orthopaedics ACS Medical College and HospitalDr MGR Educational and Research InstituteChennai 600077Tamil NaduIndia Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennai 600002Tamil NaduIndia Department of Trauma and Orthopaedics Southport and Ormskirk HospitalsMersey and West Lancashire Teaching NHS TrustSouthport PR86PNUnited Kingdom

The integration of WhatsApp,a widely-used instant messaging application(IMA),into the realm of orthopaedics and trauma surgery has emerged as a significant development in recent *** paper explores the multifaceted role of WhatsApp in orthopaedics,focusing on its clinical and non-clinical applications,advantages,disadvantages,and future *** study synthesizes findings from various research papers,emphasizing the growing reliance on mobile technology in ***’s role in orthopaedics is notable for its ease of use,real-time communication,and ***,it facilitates triage,teleconsultation,diagnosis,treatment,patient advice,and post-operative ***-clinically,it supports telemedicine,teleradiology,virtual frac-ture clinics,research,and education in orthopaedic *** application has proven beneficial in enhancing communication among healthcare teams,providing quick responses,and motivating junior *** use in educational settings has been shown to improve learner’s understanding and patient ***,the use of WhatsApp in orthopaedics is not without *** include the potential spread of misleading information,privacy concerns,and issues with image quality affecting diagnosis and treatment *** paper acknowledges the importance of maintaining professional boundaries and the need for oversight measures to ensure content *** forward,the potential of WhatsApp and similar IMAs in orthopaedics lies in their ability to streamline data collection and retrieval,improve doctor-patient communication,and address challenges like bureaucratic red tape and limited *** paper suggests that future orthopaedic practice,particularly in emergency departments,will increasingly rely on such technologies for efficient patient *** shift,however,must be approached with an understanding of the ethical,legal,and practical implications of integrating social media and mobile

关键词： Social media WhatsApp Orthopaedics Trauma Research

Efficacy of stromal vascular fraction for knee osteoarthritis:A prospective,single-centre,non-randomized study with 2 years follow-up

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World Journal of Orthopedics 2024年第5期15卷 457-468页

作者： Madhan Jeyaraman naveen Jeyaraman Tarun Jayakumar Swaminathan Ramasubramanian Rajni Ranjan Saurabh kumar Jha Ashim Gupta Department of Orthopaedics ACS Medical College and HospitalDr MGR Educational and Research InstituteChennaiTamil Nadu 600077India Department of Biotechnology School of Engineering and TechnologySharda UniversityGreater NoidaUttar Pradesh 201310India Department of Orthopaedics and Regenerative Medicine South Texas Orthopaedic Research InstituteLaredoTX 78045United States Department of Orthopaedics KIMS-Sunshine HospitalHyderabadTelangana 500032India Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennaiTamil Nadu 600002India Department of Orthopaedics School of Medical Sciences and ResearchSharda UniversityGreater NoidaUttar Pradesh 201306India Department of Zoology Kalindi CollegeUniversity of DelhiNew Delhi 110008India Department of Orthopaedics and Regenerative Medicine Regenerative OrthopaedicsNoida 201301Uttar PradeshIndia Department of Orthopaedics and Regenerative Medicine Future BiologicsLawrencevilleGA 30043United States Department of Orthopaedics and Regenerative Medicine BioIntegrateLawrencevilleGA 30043United States

BACkGROUND Current osteoarthritis(OA)treatments focus on symptom relief without addressing the underlying disease *** regenerative medicine,current treatments have *** regenerative medicine,more research is needed for intra-articular stromal vascular fraction(SVF)injections in OA,including dosage optimization,long-term efficacy,safety,comparisons with other treatments,and mechanism *** To compare the efficacy of intra-articular SVF with corticosteroid(ICS)injections in patients with primary knee *** The study included 50 patients with kellgren-Lawrence grades II and III *** were randomly assigned(1:1)to receive either a single intra-articular SVF injection(group A)or a single intra-articular ICS(triamcinolone)(group B)*** were followed up at 1,3,6,12,and 24 *** analog score(VAS)and International knee Documentation Committee(IkDC)scores were administered before the procedure and at all *** safety of SVF in terms of adverse and severe adverse events was *** analysis was performed with SPSS Version 26.0,IBM Corp,Chicago,IL,United *** Both groups had similar demographics and baseline clinical ***-up showed minor patient loss,resulting in 23 and 24 in groups A and B *** A experienced a notable reduction in pain,with VAS scores decreasing from 7.7 to 2.4 over 24 months,compared to a minor reduction from 7.8 to 6.2 in Group *** difference in pain reduction in group A was statistically significant from the third month ***,Group A showed significant improvements in knee functionality,with IkDC scores rising from 33.4 to 83.10,whereas Group B saw a modest increase from 36.7 to *** improvement in Group A was statistically significant from 6 months and maintained through 24 *** Our study demonstrated that intra-articular administration of SVF can lead to reduced pain and improved knee function in pa

关键词： knee osteoarthritis Adipose tissue Stromal vascular fraction Regenerative medicine Orthobiologics

Outcome of patients with traumatic cranial nerve palsy admitted to a university hospital in Nepal

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中华神经外科杂志(英文) 2024年第2期10卷 1-7页

作者： kumari khusbu Gautam naveen Parajuli Monika Singh Shreejana Pradhananga Amit Sedai Gopal Shilpakar Sushil Sharma Mohan Raj Maharajgunj Medical Campus Institute of Medicine Tribhuvan University Maharajgunj Kathmandu Nepal Department of Research Institute of Medicine Maharajgunj Kathmandu Nepal Department of Neurosurgery Tribhuvan University Teaching Hospital Maharajgunj Kathmandu Nepal

Background Cranial nerve palsy (CNP) is a common complication of traumatic brain injury (TBI). Despite a high incidence of TBI in Nepal (382 per 100,000), literature on the specific management and outcome of CNP is lacking. This study aimed to examine the outcomes of TBI patients involving single versus multiple *** A retrospective chart review of 170 consecutive TBI patients admitted to the tertiary neurosurgical center in Nepal between April 2020 and April 2022 was conducted. Demographic, clinical, and etiological characteristics; imaging findings; and management strategies were recorded, compared, and analyzed using descriptive statistics. The Glasgow Outcome Scale Extended (GOSE) was used to measure the outcomes in two groups of patients (single and multiple CNP) at 3 *** Out of 250 eligible patients, 80 were excluded and CNP was noted in 29 (17.1%) of the remaining 170. The median age was 34.9 years, and falls (60.6%) were the most common cause of trauma. TBI severity was categorized based on GCS: mild (82.4%), moderate (15.9%), and severe (1.8%). Cranial nerve involvement was seen in 29 (17.05%) patients: single cranial nerve involvement in 26 (89.65%) and multiple nerve involvement in 3 (10.34%). The most common isolated cranial nerve involved was the oculomotor nerve (37.9%). CT findings revealed a maximum of skull fractures with no significant association between CNP and CT *** CNP is a common consequence of TBI with the most common etiology being falls followed by RTA. Single CNP was more common than multiple CNP with no significant difference in the outcome in the 3-month GOSE score. Further research is needed to determine the burden of traumatic CNP and establish specific management guidelines for different types of CNP.

关键词： Cranial nerve palsy Nepal Outcome Traumatic brain injury

Optimizing outcomes:Implementing enhanced recovery after surgery in orthopedic surgery

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World Journal of Methodology 2024年第4期14卷 6-12页

作者： Sathish Muthu Madhan Jeyaraman naveen Jeyaraman Swaminathan Ramasubramanian Department of Orthopedics Orthopedic Research GroupTamil NaduCoimbatore 641045India Department of Orthopedics Government Medical CollegeTamil NaduKarur 639003India Department of Biotechnology Karpagam Academy of Higher EducationTamil NaduCoimbatore 641021India Department of Orthopedics ACS Medical College and HospitalDr MGR Educational and Research InstituteTamil NaduChennai 600077India Department of Orthopedics Government Medical CollegeOmandurar Government EstateTamil NaduChennai 600002India

In the realm of orthopedics,the adoption of enhanced recovery after surgery(ERAS)protocols marks a significant stride towards enhancing patient *** embracing a holistic approach that encompasses preoperative counseling,dietary optimization,minimally invasive procedures,and early postoperative mobilization,these protocols have ushered in a new era of surgical *** encountering hurdles like resistance to change and resource allocation challenges,the efficacy of ERAS protocols in improving clinical outcomes is *** benefits include shortened hospital stays and bolstered improved patient-safety *** ahead,the horizon for ERAS in orthopedics appears bright,with an emphasis on tailoring care to individual needs,integrating cutting-edge technologies,and perpetuating research *** shift towards a more personalized,streamlined,and cost-efficient model of care underscores the transformative potential of ERAS in reshaping not only orthopedic surgery but also the journey to patient *** editorial details the scope and future of ERAS in the orthopedic specialty.

关键词： Enhanced recovery after surgery Orthopedic surgery Perioperative care Personalized care Patient reported outcome measure Complications

Headache that Never Went Away

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Journal of Biosciences and Medicines 2024年第1期12卷 161-172页

作者： naveen Vithanage Cyrill James Nirojan karunanathan Amandip Singh Rakkar General Medicine Tauranga Hospital Bay of Plenty Tauranga New Zealand Cardiology Department Wexford General Hospital Ireland Wexford Ireland School of Medicine University College Dublin Ireland Dublin Ireland

Central nervous system (CNS) vasculitis encompasses a broad range of diseases characterized by inflammation of blood vessels within the brain, spinal cord, and meninges. This review focuses on Primary Angiitis of the CNS (PACNS), a unique form affecting only the CNS without other organ involvement. PACNS primarily affects the small- and medium-sized arteries in the brain, leading to neurological symptoms. Early recognition and intervention are essential for optimal management. This case report of a 25-year-old male highlights the diagnostic challenges, where a multidisciplinary approach was necessary to diagnose PACNS, given initial negative results. The paper also explores the etiology and pathogenesis of PACNS and discusses the diagnostic criteria proposed by researchers. Medical professionals primarily base management strategies on induction and maintenance therapies, utilizing a combination of glucocorticoids and immunosuppressants as the standard treatment. However, the exact dosages and administration methods need further research due to the absence of randomized clinical trials. The review underscores the need for continued research to enhance diagnostic and treatment protocols, given the severity of PACNS.

关键词： Primary Angitis of Central Nervous System

Relative active tectonics evaluation using geomorphic and drainage indices, in Dadra and Nagar Haveli, western India

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Geodesy and Geodynamics 2022年第3期13卷 219-229页

作者： naveen kumar Rakesh k.Dumka kapil Mohan Sumer Chopra Institute of Seismological Research(ISR) RaysanGandhinagarGujaratIndia Department of Earth Science Gujarat UniversityNavrangpuraAhmedabad380009India

The present study area,Dadra and Nagar Haveli,contains several lineaments and traces of active *** various aspect of the geomo rphic analysis,i.e.,stream length(SL) gradient,hypsometric integral(HI),basin shape(BS),valley floor(VF),have been applied to evaluate the relative index of active tectonics(RIAT) of the Damanganga *** high and low zones of tectonic activity have been identified based on the geomorphic analysis of the *** evaluation of all indices,three classes,class IIhigh(1.3 ≤RIAT <1.5),class Ⅲ-moderate(1.5 ≤RIAT <1.8),and class Ⅳ-low(1.8 ≤RIAT),have been obtained to outline the degree/gradation of comparative tectonic activities in the study *** appraised outcome of the RIAT dispersal is also well reinforced by the geomorphic evidence in the *** collective outcomes of geomorphic evidence,such as stream deflection and analysis of lineament,deflection of streams,and geomorphic indices,conceal that the Damanganga watershed is affected by tectonic activity.

关键词： Active tectonics Geomorphic indices Relative index of active tectonics(RIAT) Drainage indices

Effect of different geometrical non-uniformities on nonlinear vibration of porous functionally graded skew plates: A finite element study

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Defence Technology（防务技术） 2022年第6期18卷 918-936页

作者： H.S.naveen kumar Subhaschandra kattimani Department of Mechanical Engineering National Institute of Technology KarnatakaSurathkal575025India

This article presents the investigation of nonlinear vibration analysis of tapered porous functionally graded skew(TPFGS)plate considering the effects of geometrical non-uniformities to optimize the thickness in the structural *** TPFGS plate is analyzed considering linearly,bi-linearly,and exponentially varying *** plate’s effective material properties are tailor-made using a modified power-law distribution in which gradation varies along the thickness direction of the TPFGS *** the non-linear finite element formulation to develop the kinematic equation’s displacement model for the TPFGS plate is based on the first-order shear deformation theory(FSDT)in conjunction with von karman’s *** nonlinear governing equations are established by Hamilton’s *** direct iterative method is adopted to solve the nonlinear mathematical relations to obtain the nonlinear *** influence of the porosity distributions and porosity parameter indices on the nonlinear frequency responses of the TPFGS plate for different skew angles and variable thicknesses are studied for various geometrical *** influence of taper ratio,variable thickness,skewness,porosity distributions,gradation,and boundary conditions on the plate’s nonlinear vibration is *** nonlinear frequency analysis reveals that the geometrical nonuniformities and porosities significantly influence the porous functionally graded plates with varying thickness than the uniform ***,exponentially and linearly variable thicknesses can be considered for the thickness optimizations of TPFGS plates in the structural design.

关键词： Functionally graded material Shear deformation theory Porosity distributions Variable thickness Geometrical skewness Nonlinear free vibration

Non-enzymatic methods for isolation of stromal vascular fraction and adipose-derived stem cells:A systematic review

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World Journal of Methodology 2024年第2期14卷 134-144页

作者： Vamsi krishna Mundluru MJ Naidu Ravi Teja Mundluru naveen Jeyaraman Sathish Muthu Swaminathan Ramasubramanian Madhan Jeyaraman Department of Orthopaedics MJ Naidu Super Speciality HospitalVijayawada 520002Andhra PradeshIndia Department of Regenerative Medicine StemC ClinicsVijayawada 520002Andhra PradeshIndia Department of Orthopaedics ACS Medical College and HospitalDr.MGR Educational and Research InstituteChennai 600077Tamil NaduIndia Department of Orthopaedics Orthopaedic Research GroupCoimbatore 641045Tamil NaduIndia Department of Orthopaedics Government Medical College and HospitalKarur 639004Tamil NaduIndia Department of Biotechnology Faculty of EngineeringKarpagam Academy of Higher EducationCoimbatore 641021Tamil NaduIndia Department of Orthopaedics Government Medical CollegeOmandurar Government EstateChennai 600002Tamil NaduIndia

BACkGROUND Adipose-derived stem cells(ADSCs)and the stromal vascular fraction(SVF)have garnered substantial interest in regenerative medicine due to their potential to treat a wide range of *** enzymatic methods for isolating these cells face challenges such as high costs,lengthy processing time,and regulatory *** This systematic review aimed to assess the efficacy and practicality of nonenzymatic,mechanical methods for isolating SVF and ADSCs,comparing these to conventional enzymatic *** Following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines,a comprehensive literature search was conducted across multiple *** were selected based on inclusion criteria focused on non-enzymatic isolation methods for SVF and ADSCs from adipose *** risk of bias was assessed,and a qualitative synthesis of findings was performed due to the methodological heterogeneity of the included *** Nineteen studies met the inclusion criteria,highlighting various mechanical techniques such as centrifugation,vortexing,and ultrasonic *** review identified significant variability in cell yield and viability,and the integrity of isolated cells across different non-enzymatic methods compared to enzymatic *** some advantages of mechanical methods,including reduced processing time and avoidance of enzymatic reagents,the evidence suggests a need for optimization to match the cell quality and therapeutic efficacy achievable with enzymatic *** Non-enzymatic,mechanical methods offer a promising alternative to enzymatic isolation of SVF and ADSCs,potentially simplifying the isolation process and reducing regulatory ***,further research is necessary to standardize these techniques and ensure consistent,high-quality cell yields for clinical *** development of efficient,safe,and reproducible non-enzymatic isolation methods could signi

关键词： Adipose-derived stem cells Stromal vascular fraction Regenerative medicine Non-enzymatic isolation Mechanical separation techniques