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Intensive care outcome of left main stem disease surgery: A single center three years’ experience

World Journal of critical care Medicine 2021年第1期10卷 12-21页

作者： Amr S Omar Samy Hanoura Yasser Shouman praveen c sivadasan Suraj Sudarsanan Hany Osman Abdul Rasheed Pattath Rajvir Singh Abdulaziz AlKhulaifi Department of cardiothoracic Surgery/cardiac Anaesthesia and Intensive care Unit Hamad Medical CorporationDoha 3050DAQatar Department of Medicine Weill Cornell Medical College in QatarDoha 3050DAQatar Department of critical care Medicine Beni Suef UniversityBeni Suef 62511Egypt Department of cardiothoracic Surgery Hamad Medical CorporationDoha 3050DAQatar Department of Anesthesia Alazhar UniversityCairo 11651Egypt Department of cardiothoracic Surgery/Intensive care Unit Section Hamad Medical CorporationDoha 3050DAQatar Department of Medical Research Hamad Medical CorporationDoha 3050DAQatar Department of cardiothoracic Surgery Qatar UniversityDoha 3050DAQatar

BAcKGROUND Left main coronary artery(LMcA)supplies more than 80%of the left ventricle,and significant disease of this artery carries a high mortality unless intervened ***,the influence of coronary artery bypass grafting(cABG)surgery on patients with LMcA disease on morbidity intensive care unit(IcU)outcomes needs to be ***,the impact of cABG surgery on the morbidity of the IcU population with LMcA disease is worth *** To determine whether LMcA disease is a definitive risk factor of prolonged IcU stay as a primary outcome and early morbidity within the IcU stay as secondary *** Retrospective descriptive study with purposive sampling analyzing 399 patients who underwent isolated urgent or elective *** were divided into 2 groups;those with LMcA disease as group 1(75 patients)and those without LMcA disease as group 2(324 patients).We correlated IcU outcome parameters including IcU length of stay,post-operative atrial fibrillation,acute kidney injury,re-exploration,perioperative myocardial infarction,post-operative bleeding in both *** Patients with LMcA disease had a significantly higher prevalence of diabetes(43.3%vs 29%,P=0.001).However,we did not find a statistically significant difference with regards to IcU stay,or other morbidity and mortality outcome *** Post-operative performance of Patients with LMcA disease who underwent cABG were comparable to those without LMcA *** was more prevalent in patients with LMcA *** findings may help in guiding decision making for future practice and stratifying the patients’care.

关键词： cardiac surgery critical care Left main disease coronary graft Outcome cardiac output

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Designing Sustainable Thermal Energy System with Electro-Photo conversion

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Journal of Thermal Science 2024年第5期33卷 1642-1656页

作者： praveen BARMAVATU Sunil Kumar KOTHAPALLI Abilash RADHAKRISHNAN Dani Jermisha RAILIS Department of Mechanical Engineering Faculty of EngineeringUniversidad Tecnologica MetropolitanaSantiago 7810003Chile SRKR Engineering college BhimavaramWest GodavariAndhra Pradesh 534204India Maria college of Engineering and Technology Attoor629177Tamil NaduIndia

Thermal energy conversion and also storage system is to advance knowledge and develop practical solutions at the intersection of micro and nano-scale engineering,energy conversion,and *** research addresses the challenge of enhancing these critical aspects to ensure prolonged system performance and durability in the context of evolving energy *** research analyses the anti-oxidation and filtration behaviours of micro and nano-scale structures in the context of electro-and photo-thermal energy conversion and also storage systems.A micro multiscale hierarchical structure strategy is presented to fabricate multi-scale double-layer porous wick evaporators with the electrospun nanofibers made of gelatin-polyamide 6(GPA6)and Ti_(3)c_(2)T_(x)MXene/silver nanowire with cellulose Micro/NanoFibers(cMNF)cryogens by using spark plasma sintering(SPS)based high-pressure hydrothermal treatment *** excellent anti-oxidation effect was offered by coating the film in thermal conditions and the anti-oxidation properties were further examined from 500℃to850℃.The results are analysed using Matlab software to improve the efficiency of energy conversion processes by integrating nanostructures into thermal systems,to increase energy output while minimizing *** silver nanowire is with a heat transfer coefficient of 78%,a mass remaining rate of 98.7%,and an energy storage efficiency of 23.8%.This study enhances energy density and duration by integrating nanostructures into thermal systems while minimizing energy losses,and it not only exhibits excellent anti-oxidation properties but also possesses superior filtration capabilities for designing and engineering multifunctional nanomaterials.

关键词： heat exchanger micro and nano-scale structure electro-and photo-thermal energy conversion and storage system anti-oxidation filtration behaviour

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A survey on automatic dashboard recommendation systems

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Visual Informatics 2024年第1期8卷 67-79页

作者： praveen Soni cyril de Runz Fatma Bouali Gilles Venturini LIFAT University of Tours64 avenue Jean PortalisTours37200France IUT c University of Lille53 Rue de l’AlmaRoubaix59100France

This paper presents a survey on automatic or semi-automatic recommendation systems that help users create *** starts by showing the important role that dashboards play in data science,and gives an informal definition of dashboards,i.e.,a set of visualizations possibly with linkage,a screen layout and user *** are mainly interested in systems that use a fully or partially automatic mechanism to recommend dashboards to *** automation includes the suggestion of data and visualizations,the optimization of the layout and the use of user *** position our work with respect to existing *** from a set of over 1000 papers,we have selected and analyzed 19 papers/systems along several *** main dimensions were the set of considered visualizations,the suggestion method,the utility/objective functions,the layout,and the user *** conclude by highlighting the main achievements in this domain and by proposing perspectives.

关键词： Automatic visualization Dashboard recommendation Multiple view interfaces

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Improving hydrogen evolution reaction efficiency through lattice tuning

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Nano Research 2024年第7期17卷 5907-5913页

作者： Zipeng Zhao Haotian Liu Wenpei Gao praveen Kolla Wang Xue Zeyan Liu Jinghua Guo Sanjeev Mukerjee Xiaoqing Pan Qingying Jia Xiangfeng Duan Yu Huang Department of Materials Science and Engineering University of CaliforniaLos AngelesCalifornia 90095USA Department of chemical Engineering and Materials Science University of CaliforniaIrvineCalifornia 92697USA Materials Science and Engineering North Carolina State UniversityRaleighNorth Carolina 27695USA Department of chemistry and chemical Biology Northeastern UniversityBostonMassachusetts 02115USA Department of chemistry and Biochemistry University of CaliforniaLos AngelesCalifornia 90095USA Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCalifornia 94720USA Department of chemistry and Biochemistry University of CaliforniaSanta CruzCalifornia 95064USA Department of Physics and Astronomy University of CaliforniaIrvineCalifornia 92697USA california Nanosystems Institute University of CaliforniaLos AngelesCalifornia 90095USA

The intermittent nature of renewable energy sources sets a requirement for efficient energy storage to mitigate the conflict between energy supply and *** is a promising choice for energy storage due to its high energy ***,the conversion of electrical energy to chemical energy stored in hydrogen through water electrolysis suffers from low efficiency,and the electricity cost dominates the total cost of hydrogen ***,we report the study of improving the hydrogen evolution reaction activity of Pt-based catalysts by building a nanoscale surface NiO and Pt interface,further optimizing the performance via tuning the lattice parameter of the core of nanoparticles,which can be achieved by varying the dealloying annealing *** optimized PtcuNi-O/c and PtNi-O/c catalysts are demonstrated to be one of the best catalysts,with a mass activity(MA)of 9.1 and 8.7 mA/μgPt,which is 9.9-fold and 9.5-fold of that of Pt/c,respectively.

关键词： lattice tuning Pt-based catalyst hydrogen evolution reaction electrocatalysis

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A Study on Outlier Detection and Feature Engineering Strategies in Machine Learning for Heart Disease Prediction

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computer Systems Science & Engineering 2024年第5期48卷 1085-1112页

作者： Varada Rajkumar Kukkala Surapaneni Phani praveen Naga Satya Koti Mani Kumar Tirumanadham Parvathaneni Naga Srinivasu Department of computer Science&Engineering(AIML) MLR Institute of TechnologyHyderabad500043India Department of computer Science and Engineering Prasad V.Potluri Siddhartha Institute of TechnologyVijayawada520007India Department of computer Science&Engineering Sir C.R.Reddy College of EngineeringEluru534001India Amrita School of computing Amrita Vishwa VidyapeethamAmaravati522503India Department of Teleinformatics Engineering Federal University of CearáFortaleza60455-970Brazil

This paper investigates the application ofmachine learning to develop a response model to cardiovascular problems and the use of AdaBoost which incorporates an application of Outlier Detection methodologies namely;Z-Score incorporated with GreyWolf Optimization(GWO)as well as Interquartile Range(IQR)coupled with Ant colony Optimization(AcO).Using a performance index,it is shown that when compared with the Z-Score and GWO with AdaBoost,the IQR and AcO,with AdaBoost are not very accurate(89.0%vs.86.0%)and less discriminative(Area Under the curve(AUc)score of 93.0%vs.91.0%).The Z-Score and GWO methods also outperformed the others in terms of precision,scoring 89.0%;and the recall was also found to be satisfactory,scoring 90.0%.Thus,the paper helps to reveal various specific benefits and drawbacks associated with different outlier detection and feature selection techniques,which can be important to consider in further improving various aspects of diagnostics in cardiovascular ***,these findings can enhance the knowledge of heart disease prediction and patient treatment using enhanced and innovativemachine learning(ML)*** findings when combined improve patient therapy knowledge and cardiac disease prediction through the use of cutting-edge and improved machine learning *** work lays the groundwork for more precise diagnosis models by highlighting the benefits of combining multiple optimization *** studies should focus on maximizing patient outcomes and model efficacy through research on these combinations.

关键词： Grey wolf optimization ant colony optimization Z-Score interquartile range(IQR) AdaBoost outlier

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Genes linked to obesity-related infertility:bridging the knowledge gap

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Reproductive and Developmental Medicine 2024年第2期8卷 121-129页

作者： praveen Kumar chandra Sekar Ramakrishnan Veerabathiran Human cytogenetics and Genomics Laboratory Faculty of Allied Health SciencesChettinad Academy of Research and EducationKelambakkamTamil Nadu 603103India

Genetic factors play a pivotal role in the complex relationship between obesity and *** article delves into the genetics of obesity-related infertility,focusing on the essential genes and mechanisms in both *** explored infertility factors in obese females,focusing on polycystic ovary syndrome(PcOS)and the influence of genes like insulin receptor(INSR),androgen receptor(AR),and follicle-stimulating hormone receptor(FSHR).Epigenetic changes are believed to contribute to PcOS-related *** impact of adipokines and inflammation on obesity-related infertility has been discussed,with genes such as fat mass and obesity(FTO)and melanocortin-4-receptor(Mc4R)playing significant *** factors affecting sperm quality and function,including nuclear receptor subfamily 3 group c member 1(NR3c1)and methylenetetrahydrofolate reductase(MTHFR),have been investigated in obesity-related infertility in *** dysregulation influenced by genetic markers,such as leptin receptor(LEPR),tumor necrosis factor-alpha(TNF-α),and interleukin-6(IL-6),was also *** factors play a vital role in obesity-related infertility in both *** involved in metabolism,hormonal regulation,and inflammation contribute to the complex association between obesity and *** changes further complicate the *** these genetic mechanisms is essential to address obesity-related infertility and develop personalized interventions.

关键词： Obesity Infertility PcOS DNA methylation Epigenetics

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Bi3+assisted luminescence in SrMoO_(4):Sm^(3+) red phosphors

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Journal of Rare Earths 2021年第11期39卷 1336-1343,I0002页

作者： Vaibhav chauhan Prashant Dixit praveen c.Pandey Department of Physics Indian Institute of Technology(Banaras Hindu University)Varanasi221005UPIndia

In this paper,we report synthesis of pure SrMoO_(4),Sm^(3+)(1 at%-5 at%)doped SrMoO_(4)and Bi^(3+)(1 at%-3 at%)co-doped in 4 at%Sm^(3+)doped SrMoO_(4)(SrMoO_(4):4 Sm^(3+))phosphors by solution combustion *** X-ray diffraction(XRD)analysis reveals the tetragonal phase of all samples,also Bi^(3+)co-doping supports crystallite size growth and reduces lattice *** analysis of Sm^(3+)doped SrMoO_(4)ascertains a decrease in band gap and Bi^(3+)co-doping confirms the emergence of an absorbance peak at around 308 nm attributed to Bi^(3+)energy ***(PL)analysis ascertains an increase in emission peaks for Sm^(3+)doped SrMoO_(4)up to 4%concentration,which are attributed to an electron transition from 4 G5/2 to 6 HJ(J=5/2,7/2,9/2,and 11/2)energy levels of Sm^(3+)*** have explained the effects of Bi^(3+)co-doping on the luminescence of Sm^(3+)doped SrMoO_(4).The reduced microstrain and increased crystallinity of the phosphors as a result of Bi^(3+)co-doping and their correlation with the luminescence of Sm^(3+)ions are discussed.

关键词： SrMoO_(4):Sm^(3+) Bismuth ion Photoluminescence Absorption study crystallinity Microstrain

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cost Optimized Switching of Routing Protocol Scheme for IoT Applications

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computer Systems Science & Engineering 2022年第4期41卷 67-82页

作者： Karunanithi praveen kumar Perumal Sivanesan School of computing SASTRA UniversityThanjavur613401TamilnaduIndia

In this work,we propose a context-aware switching of routing protocol scheme for speciﬁc application requirements of IoT in real-time using a software-deﬁned networking controller in wireless sensor *** work planned has two stages i)Selection of suitable routing protocol(RP)for given IoT applications using higher cognitive process and ii)Deployment of the corresponding routing *** use the supervised learning-regression method for classiﬁcation of the routing protocol while considering the network parameters like stability,path delay,energy utilization,and *** chosen routing protocol will be set in the sensor network using a software-deﬁned networking controller in an exceedinglyﬂexible manner during the second *** simulation has been done and results are evaluated to point out the strength of the proposed work,while dynamically varying the speciﬁc requirements of IoT *** observe that the work proposed is path-breaking the prevailing methods,where a speciﬁc routing protocol is employed throughout the period of ***’s clearly shown that the proposed,Low-cost context-Aware Protocol Switching(LcAPS)scheme is efﬁcient in improving the performance of the sensor network and also meets the speciﬁc application requirements of IoT by using Software-Deﬁned Wireless Sensor Networks SDWSNs.

关键词： Internet of things sensor network efﬁciency software-deﬁned networking wireless sensor networks supervised learning cost optimization

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Gold-catalyzed addition reaction between creatinine and isatin:A sustainable and green chemistry approach for the diastereoselective synthesis of 3-substituted-3-hydroxyisatins

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chinese Journal of catalysis 2017年第5期38卷 775-783页

作者： K. Parthasarathy T. Ponpandian c. praveen Department of chemistry Siddha Central Research Institute Central Council for Research in Siddha (CCRS) Arumbakkam Chennai‐600106 Tamil NaduIndia Inogent Laboratories Private Limited Industrial Development Area Nacharam Hyderabad‐500076 Telangana India Functional Materials Division Council of Scientific and Industrial Research‐Central Electrochemical Research Institute (CSIR‐CECRI) Karaikudi‐600006Tamil Nadu India

The aldolization of various isatins with creatinine under gold catalysis in water has been *** reaction is operationally simple as the products can be isolated by simple filtration without requiring tedious solvent extraction and column chromatographic *** generality of this methodology is showcased through the reactions of a wide range of isatin derivatives with creatinine to afford the respective aldol products in excellent yields with complete syn‐*** scope of this chemistry is further extended to a tandem reaction involving isatins,creatinine and malononitrile to afford multicomponent products in excellent yields with complete anti‐*** antioxidant potency of the synthesized compound was assessed by a spectrophotometric method,which revealed that three compounds containing halogen atoms(2c,2d and2e)were the most active compared with the standard.

关键词： creatinine Gold catalysis Green chemistry Diastereoselectivity Antioxidant

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The homeostatic γc cytokines IL-7 and IL-15 suppress the induction of cD4^(+) cD8αα^(+) intraepithelial T cells in the gut

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cellular & Molecular Immunology 2022年第6期19卷 751-753页

作者： can Li praveen Prakhar Jung-Hyun Park Experimental Immunology Branch Center for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMD20892USA

All T cells require cytokine signaling for their development and maintenance, and cD8αα^(+) IEL T cells are noted for their requirement for IL-15 [8]. This IL-15 dependency was demonstrated by the paucity of cD8αα^(+) T cells among SI IELs in Il15–/– mice (Fig. 1d and Fig. S1a). However, the cytokine requirements of cD8αα^(+)cD4^(+) T cells are currently unclear. Because of the shared phenotype of cD8αα expression with cD8αα^(+) IELs, we postulated that cD4^(+)cD8αα^(+) IELs would also depend on IL-15.

关键词： cD8α cytokine cytokines

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