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Orbital apex syndrome after tooth extraction in an immunocompromised patient

International Journal of Ophthalmology(English edition) 2011年第1期4卷 112-114页

作者： Suresh Subramaniam Cheong Min Tet Wan Hazabbah Wan Hitam Adil Hussein Shamim Ahmed Khan hillol kanti pal Zunaina Embong Department of Ophthalmology School of Medical SciencesUniversiti Sains MalaysiaHealth Campus Department of Ortorhinolaryngology School of Medical SciencesUniversiti Sains MalaysiaHealth Campus Department of Neurosciences School of Medical SciencesUniversiti Sains MalaysiaHealth Campus

A 60 year-old man presented with acute on set of left eye proptosis and ptosis. It was associated with poor vision, eye pain and restriction of eye movement of the same eye after 5 hours post left upper molar tooth extraction. The visual acuity in the left eye was hand movement. There was severe ptosis and proptosis of the left eye. The conjunctiva was chemotic with quite anterior chamber. The pupil was mid dilated and sluggished to light. The ocular movement was restricted in all directions. Fundoscopy of the left eye revealed features of central retinal artery occlusion with hyperaemic disc and subretinal exudates at posterior pole. The right eye appeared normal. Urgent MRI brain and orbit revealed severe left paranasal sinusitis with anterior displacement of the left globe and presence orbital abscess. Patient was managed with Otorhinolaryngology and Neurosurgery teams. He underwent emergency transnasal drainage of abscess. Histopathological examination of unhealthy sinus mucosa showed evidence of fungal infection. However, the culture and sensitivity result was inconclusive. Patient was treated with amphotericin B, ceftriaxone, amoxicillin clavulanate and metronidazole. Patient was detected to have high blood sugar level and was managed accordingly. The proptosis improved with treatment. However, his vision, ptosis and ophthalmoplegia remained static. Assessing the immunocompromised status is important for the management of patient presented as acute orbital apex syndrome to avoid fatal outcome.

关键词： orbital apex syndrome tooth extraction proptosis ptosis ophthalmoplegia

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Field based index of flood vulnerability (IFV): A new validation technique for flood susceptible models

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Geoscience Frontiers 2021年第5期12卷 110-123页

作者： Susanta Mahato Swades pal Swapan Talukdar Tamal kanti Saha Parikshit Mandal Department of Geography University of GourBangaMaldaIndia

The flood hazard management is one of the major challenges in the floodplain regions *** the rise in population growth and the spread of infrastructural development,the level of risk has increased over ***,the prediction of flood susceptible area is a key challenge for the adoption of management *** susceptibility modeling is technically a common work,but it is still a very tough job to validate flood susceptible models in a very rigorous and scientific ***,the present work in the Atreyee River Basin of India and Bangladesh was planned to establish artificial neural network(ANN),radial basis function(RBF),random forest(RF)and their ensemble-based flood susceptibility *** flood susceptible models were constructed based on nine flood conditioning *** flood susceptibility models were validated in a conventional way using the receiver operating curve(ROC).To validate the flood-susceptible models,a two dimensional(2D)hydraulic flood simulation model was ***,the index of flood vulnerability model was developed and applied for validating the flood susceptible models,which was a very unique way to validate the predictive *** test and Wilcoxon Signed rank test were employed to compare the generated flood susceptible *** showed that 11.95%-12.99%of the entire basin area(10188.4 km^(2))comes under very high flood-susceptible *** evaluation results have shown that the performance of ensemble flood susceptible models outperforms other standalone machine learning *** flood simulation model and IFV model were also spatially adjusted with the flood susceptibility ***,the present study recommended for the ensemble flood susceptibility prediction and IFV based validation along with conventional ways.

关键词： Flood susceptibility Flood vulnerability Machine learning Index of flood vulnerability Flood simulation model

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Intricacies during pregnancy with gestational diabetes mellitus

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World Journal of Clinical Cases 2025年第1期13卷 62-64页

作者： Richa Rattan Rimesh pal Parul Chawla Gupta Arvind Kumar Morya Ripunjay Prasad Department of Endocrinology Post Graduate Institute of Medical Education and ResearchChandigarh 160012India Department of Ophthalmology Post Graduate Institute of Medical Education and ResearchChandigarh 160012PunjabIndia Department of Ophthalmology All India Institute of Medical SciencesHyderabad 508126TelanganaIndia Department of Ophthalmology RP Eye InstituteDelhi 110001India

The study by Cao et al aimed to identify early second-trimester biomarkers that could predict gestational diabetes mellitus(GDM)development using advanced proteomic techniques,such as Isobaric tags for relative and absolute quantitation isobaric tags for relative and absolute quantitation and liquid chromatography-mass spectrometry liquid chromatography-mass *** analysis revealed 47 differentially expressed proteins in the GDM group,with retinol-binding protein 4 and angiopoietin-like 8 showing significantly elevated serum levels compared to *** these findings are promising,the study is limited by its small sample size(n=4 per group)and lacks essential details on the reproducibility and reliability of the protein quantification methods ***,the absence of experimental validation weakens the interpretation of the protein-protein interaction network identified through bioinformatics *** study's focus on second-trimester biomarkers raises concerns about whether this is a sufficiently early period to implement preventive interventions for *** GDM risk during the first trimester or pre-conceptional period may offer more clinical *** its limitations,the study presents valuable insights into potential GDM biomarkers,but larger,well-validated studies are needed to establish their predictive utility and generalizability.

关键词： Gestational diabetes mellitus Biomarkers Differentially expressed proteins Retinol-binding protein 4 Angiopoietin-like 8 Proteomics Lifestyle interventions Early prediction

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Using DEMATEL for Contextual Learner Modeling in Personalized and Ubiquitous Learning

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Computers, Materials & Continua 2021年第12期69卷 3981-4001页

作者： Saurabh pal Pijush kanti Dutta Pramanik Musleh Alsulami Anand Nayyar Mohammad Zarour Prasenjit Choudhury Department of Computer Science and Engineering National Institute of TechnologyDurgapurIndia Department of Information Systems Umm Al-Qura UniversityMakkahKSA Graduate School Duy Tan UniversityDa NangVietnam Prince Sultan University RiyadhSaudi Arabia

With the popularity of e-learning,personalization and ubiquity have become important aspects of online *** make learning more personalized and ubiquitous,we propose a learner model for a query-based personalized learning recommendation *** contextual attributes characterize a learner,but considering all of them is costly for a ubiquitous learning *** this paper,a set of optimal intrinsic and extrinsic contexts of a learner are identified for learner modeling.A total of 208 students are ***(Decision Making Trial and Evaluation Laboratory)technique is used to establish the validity and importance of the identified contexts and find the interdependency among *** acquiring methods of these contexts are also *** the basis of these contexts,the learner model is designed.A layered architecture is presented for interfacing the learner model with a query-based personalized learning recommendation *** a ubiquitous learning scenario,the necessary adaptive decisions are identified to make a personalized recommendation to a learner.

关键词： Personalized e-learning DEMATEL learner model ontology learner context personalized recommendation adaptive decisions

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Comparative evaluation of physico-chemical characteristics of biopolyesters P（3HB） and P（3HB-co-3HV） produced by endophytic Bacillus cereus RCL 02

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Frontiers in Biology 2018年第4期13卷 297-308页

作者： Ritupama Das Nayan Ranjan Saha Arundhati pal Dipankar Chattopadhyay Amal kanti Paul Microbiology Laboratory Department of Botany University of Calcutta 35 Ballygunge Circular Road Kolkata 700019 West Bengal India Department of Polymer Science and Technology University of Calcutta 92 A. P. C. Road KoIkata 700009 West Bengal India Department of Botany Serampore College 9 William Carey Road Serampore Hooghly 712201 West Bengal India

BACKGROUND： Bacteria endogenously residing within the plant tissues have attracted significant attention for production of biopolyester, polyhydroxyalkanoates （PHAs）. Bacillus cereus RCL 02 （MCC 3436）, a leaf endophyte of oleaginous plant Ricinus communis L. accumulates 81% poly（3-hydroxybutyrate） [P（3HB）] of its cell dry biomass when grown in mineral salts （MS） medium. METHODS： The copolymer production efficiency of B. cereus RCL 02 was evaluated in valeric acid supplemented MS medium under biphasic cultivation condition. The copolymer so produced has been compared with the P（3HB） isolated from RCL 02 in terms of thermal, mechanical and chemical properties. RESULTS： Valeric acid supplementation as co-substrate in the medium has led to the production of copolymer of 3- hydroxybutyrate （3HB） and 3-hydroxyvalerate （3HV） [P（3HB-co-3HV）] with 14.6 mol% 3HV. The identity of the polymers has been confirmed by X-ray diffraction （XRD） analysis, Fourier transform infrared （FTIR） and nuclear magnetic resonance （NMR） spectroscopic studies. Thermogravimetric analysis （TGA） revealed that P（3HB） and P（3HB-co-3HV） films degraded at 278.66℃ and 273.49℃, respectively. The P（3HB-co-3HV） showed lower melting temperature （165.03℃） compared to P （3HB）（170.74℃） according to differential scanning calorimetry （DSC）. Incorporation of 3HV monomers decreased the tensile strength （21.52 MPa）, tensile modulus （0.93 GPa）, storage modulus （E＇）（0.99 GPa） and increased % elongation at break （12.2%） of the copolyester. However, P（3HB） showed better barrier properties with lower water vapor transmission rate （WVTR） of 0.55 g-mil/100 in2/24 h. CONCLUSION： These findings emphasized exploration of endophytic bacterial strain （RCL 02） to produce biodegradable polyesters which might have significant potential for industrial application.

关键词： poly(3-hydroxybutyrate) poly(3-hydroxybutyrate-co-3-hydroxyvalerate) biodegradable polyester Bacillus cereus endophytic bacteria

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A Novel Machine Learning-Based Hand Gesture Recognition Using HCI on IoT Assisted Cloud Platform

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Computer Systems Science & Engineering 2023年第8期46卷 2123-2140页

作者： Saurabh Adhikari Tushar kanti Gangopadhayay Souvik pal D.Akila Mamoona Humayun Majed Alfayad N.Z.Jhanjhi School of Engineering Swami Vivekananda UniversityIndia Department of Computer Science and Engineering Sister Nivedita University(Techno India Group)KolkataWest BengalIndia Sambalpur University SambalpurIndia Department of Computer Applications Saveetha College of Liberal Arts and SciencesSIMATS Deemed to be UniversityChennaiIndia Department of Information Systems College of Computer and Information SciencesJouf UniversityKSA College of Computer and Information Sciences Jouf UniversitySakaka72341Saudi Arabia School of Computer Science(SCS) Taylor’s UniversitySubang Jaya47500Malaysia

Machine learning is a technique for analyzing data that aids the construction of mathematical *** of the growth of the Internet of Things(IoT)and wearable sensor devices,gesture interfaces are becoming a more natural and expedient human-machine interaction *** type of artificial intelligence that requires minimal or no direct human intervention in decision-making is predicated on the ability of intelligent systems to self-train and detect *** rise of touch-free applications and the number of deaf people have increased the significance of hand gesture *** applications of hand gesture recognition research span from online gaming to surgical *** location of the hands,the alignment of the fingers,and the hand-to-body posture are the fundamental components of hierarchical emotions in *** gestures may be difficult to distinguish from nonsensical motions in the field of gesture *** gestures may be difficult to distinguish from nonsensical motions in the field of gesture *** this scenario,it may be difficult to overcome segmentation uncertainty caused by accidental hand motions or *** a user performs the same dynamic gesture,the hand shapes and speeds of each user,as well as those often generated by the same user,vary.A machine-learning-based Gesture Recognition Framework(ML-GRF)for recognizing the beginning and end of a gesture sequence in a continuous stream of data is suggested to solve the problem of distinguishing between meaningful dynamic gestures and scattered *** have recommended using a similarity matching-based gesture classification approach to reduce the overall computing cost associated with identifying actions,and we have shown how an efficient feature extraction method can be used to reduce the thousands of single gesture information to four binary digit gesture *** findings from the simulation support the accuracy,precision,gesture

关键词： Machine learning gesture recognition framework accuracy rate precision rate gesture recognition rate sensitivity rate efficiency rate

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Mechanical, electrical, and thermal expansion properties of carbon nanotube-based silver and silver–palladium alloy composites

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International Journal of Minerals,Metallurgy and Materials 2014年第11期21卷 1132-1140页

作者： Hemant pal Vimal Sharma Department of Physics National Institute of Technology Department of Physics Govt. Post graduate College

The mechanical, electrical, and thermal expansion properties of carbon nanotube（CNT）-based silver and silver–palladium（10：1, w/w） alloy nanocomposites are reported. To tailor the properties of silver, CNTs were incorporated into a silver matrix by a modified molecular level-mixing process. CNTs interact weakly with silver because of their non-reactive nature and lack of mutual solubility. Therefore, palladium was utilized as an alloying element to improve interfacial adhesion. Comparative microstructural characterizations and property evaluations of the nanocomposites were performed. The structural characterizations revealed that decorated type-CNTs were dispersed, embedded, and anchored into the silver matrix. The experimental results indicated that the modification of the silver and silver–palladium nanocomposite with CNT resulted in increases in the hardness and Young＇s modulus along with concomitant decreases in the electrical conductivity and the coefficient of thermal expansion（CTE）. The hardness and Young＇s modulus of the nanocomposites were increased by 30%？40% whereas the CTE was decreased to 50%-60% of the CTE of silver. The significantly improved CTE and the mechanical properties of the CNT-reinforced silver and silver–palladium nanocomposites are correlated with the intriguing properties of CNTs and with good interfacial adhesion between the CNTs and silver as a result of the fabrication process and the contact action of palladium as an alloying element.

关键词： metal matrix composites carbon nanotubes mechanical properties coefficient of thermal expansion electrical conductivity

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Settling and spreading behaviour of particle clusters in quiescent liquids in confined vessels

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Particuology 2023年第12期83卷 91-100页

作者： Sayan pal Amol A.Kulkarni Chemical Engineering&Process Development Division CSIR-National Chemical LaboratoryPune411008India Academy of Scientific and Innovative Research(AcSIR) Ghaziabad 201002India University College London Torrington PlaceLondonWC1E 7JEUK

Here we report experiments on particle cluster settling at high Reynolds number in quiescent liquid contained in a *** particles were observed to spread at the vessel bottom surface in a near-circular annular shape after settling irrespective of the shape of the vessel cross-section and particle shape,size,and *** of different parameters such as mass,type and aspect ratio of the particles,height,and viscosity of liquid was investigated on spreading *** of the hemispherical bottom cap of the cluster that bounces upon hitting the vessel bottom surface was found to be responsible for the final circular annular shape of the settled *** leakage from the cluster was seen in the form of a *** the liquid having viscosity beyond 100 cP,cluster breakage was observed that resulted in hindered settling and asymmetric shapes of finally settled *** observations are useful to understand the overall area over which settling and spreading of such clusters can be observed.

关键词： Particle cluster Temporal evolution Settling Spreading

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Single Fully Differential Second Generation Current Conveyor Based Four-Quadrant Analog Multiplier Design and Its Applications

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Chinese Journal of Electronics 2020年第5期29卷 959-965页

作者： ROY Suvajit pal Radha-Raman Department of Physics and Technophysics Vidyasagar University

This manuscript presents a new fourquadrant analog multiplier using a recently reported current mode active building block, namely the Fully differential second generation current conveyor(FDCCⅡ).The proposed circuit employs single FDCCⅡ and two NMOSFETs only, thus has simple architecture. It is fully-integrable as no other external passive component has been used. Non-ideal behaviour of the reported configuration has been analysed considering current and voltage tracking errors of the FDCCⅡ. Workability of the derived multiplier is verified with PSPICE(Cadence16.6) simulations using model parameter of TSMC 0.35μm CMOS process and found to be in close agreement with theoretical anticipations. The static power consumption of the circuit is 0.107 mW. The circuit works well with good linearity(nonlinearity error ≤ 0.96%) for the input voltage range of ±0.5 V for a supply voltage of ±1 V and the output is insensitive to temperature variation. Simulation results show that the –3 dB bandwidth of the proposed multiplier is 20.67 MHz and the output referred noise√is less than 9 nV/Hz at 1 kΩ load condition. MonteCarlo analysis has also been performed for the proposed configuration. The applicability of the reported multiplier as amplitude modulator, squarer, and frequency doubler are also demonstrated.

关键词： Four-quadrant analog multiplier Fully differential second generation current conveyor (FDCCII) Amplitude modulator Squarer Frequency doubler

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Interaction behavior and load sharing pattern of piled raft using nonlinear regression and LM algorithm-based artificial neural network

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Frontiers of Structural and Civil Engineering 2021年第5期15卷 1181-1198页

作者： Plaban DEB Sujit Kumar pal Department of Civil Engineering G H Raisoni College of Engineering&ManagementPune 412207India Department of Civil Engineering National Institute of TechnologyAgartala 799046India

In the recent era,piled raft foundation(PRF)has been considered an emergent technology for offshore and onshore *** previous studies,there is a lack of illustration regarding the load sharing and interaction behavior which are considered the main intents in the present *** element(FE)models are prepared with various design variables in a double-layer soil system,and the load sharing and interaction factors of piled rafts are *** obtained results are then checked statistically with nonlinear multiple regression(NMR)and artificial neural network(ANN)modeling,and some prediction models are *** models are prepared with Levenberg-Marquardt(LM)algorithm for load sharing and interaction factors through backpropagation *** factor of safety(FS)of PRF is also estimated using the proposed NMR and ANN models,which can be used for developing the design strategy of PRF.

关键词： interaction load sharing ratio piled raft nonlinear regression artificial neural network

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