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Management of multiple and displaced mandibular fractures in a pediatric patient sans mandibular immobilization,sans open reduction and internal fixation

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Chinese Journal of Traumatology 2024年第5期27卷 284-287页

作者： Elavenil Panneerselvam Chandini Ravikumar Trishala Annamalai rajan Sasikala Balasubramanian Krishnakumar raja V.B. Department of Oral and Maxillofacial Surgery SRM Dental College and HospitalRamapuramChennai600089Tamil NaduIndia

Maxillofacial fractures in the pediatric population are generally managed by conservative approaches such as soft diet and medication or semi-invasive procedures namely inter-maxillary fixation or circummandibular *** approaches are preferred over any invasive treatment to minimize injury to the growing skeleton and tooth *** fractures that cause functional problems such as restricted mouth opening,malocclusion or impaired breathing,mandate open reduction and internal ***,surgical management is associated with morbidity related to general anesthesia,risk of injury to vital structures,and potential,skeletal or dental growth *** case report describes a non-invasive method of managing displaced,multiple fractures of the mandible in a pediatric patient,with the use of low intensity pulsed ultrasound to achieve favorable clinical outcomes and nil *** immobilization of the mandible with inter-maxillary fixation nor open reduction and internal fixation was *** intensity pulsed ultrasound therapy is painless and patient-friendly.

关键词： Pediatric fractures Parasymphysis Ramus Composite splinting

Tri-milR29 from Trichoderma breve Targets Chitin Synthase Gene in Botrytis cinerea and its Enhanced Disease Control Efficacy through Nanodelievery-base Application

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Tri-milR29 from Trichoderma breve Targets Chitin Synthase Ge...

Epidemiological and histopathological characteristics of thyroid carcinoma in a Tunisian health care center

中国植物病理学会2024年学术年会

作者：刘震 raja Asad Ali Khan WANG Rui LI Yuejiao 刘铜 School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication) Hainan University Key Laboratory of Green Prevention and Control of Tropical Diseases and Pests Ministry of Education (School of Tropical Agriculture and Forestry)Hainan University Engineering Center of Agricultural Microbial Preparation Research and Development of Hainan (Hainan University)

In the process of mycoparasitism,a form of biological control that one fungus attacking another fungus,the exchange of biologically active molecules such as RNAs may occur,playing an important role in *** these molecules,microRNAs(miRNAs) can inhibit translation and regulate gene expression at the post-transcriptional level through complementary base pairing,thereby degrading target mRNAs to prevent ***,a well-known mycoparasitic fungus,is one of the most studied biocontrol *** recent years,small RNAs(named milRNA) have also been discovered in ***,the role of Trichoderma RNAs in their mycoparasitic activity and their targets in pathogenic fungi still needs further *** study verified the cross-species regulatory role of Trichoderma-T069 miRNA,named *** demonstrated that Tri-milR29 from T069 was transferred to ***,a pathogenic fungus,where it targeted the chitin synthase gene,BcCHS7,resulting in a marked decrease in its ***-species transportation of sRNAs may occur through extracellular vesicles(EVs) ***,more research is needed on EVs in *** a series of experiments,we verified that the Tri-milR29 from T069 was transferred to *** through the EVs *** sRNA can effectively prevent and control plant diseases by targeting specific genes in pathogenic microbes through RNA ***,their susceptibility to nuclease degradation,off-target effects,and their low absorption efficiency by target pathogens limit their practical ***,the development of suitable delivery systems to protect and deliver sRNA is *** developed a carbon nanomaterial-based delivery system that enhances the stability and absorption of TrimilR29 by ***,increasing antifungal *** nano-delivered Tri-milR29 significantly lowered the disease incidence caused by *** on various fruits and tomato plants.

关键词： microRNA extracellular vesicles biocontrol mycoparasitism pathogen

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World Journal of Otorhinolaryngology-Head and Neck Surgery 2024年第1期10卷 37-42页

作者： Maissa Ben Thayer Fatma Khanchel Imen Helal Dorra Chiboub Hedhli Raoueh Ehsen Ben Brahim raja Jouini Aschraf Chadli-Debbiche Faculty of Medicine of Tunis Tunis El Manar UniversityTunisTunisia Depatment of Pathology Habib Thameur's HospitalTunisTunisia Department of Otorhinolaryngology-Head and Neck surgery Habib Thameur's HospitalTunisTunisia

Background:Thyroid carcinoma(TC)accounts for almost 0.5%–1%of total *** incidence is increasing rapidly *** studies have drawn up the epidemiological profile of TC and its clinical and pathological ***,to date,no similar studies have been conducted in ***:To establish an epidemiological profile of TC in a Tunisian health care institute and to analyze its clinical and histopathological characteristics in our *** and Methods:We present a retrospective study reviewing the cases of TC diagnosed in our institution in a 4-year ***:We collected a sample of 192 cases of *** consisted of 31 males and 161 females(83.8%)with a sex-ratio M/F of *** mean age was 46.4 *** thyroid carcinoma was the most frequent histological *** multifocality rate was 33.8%.The mean size of TC was 2.2±1.9 cm.60.9%of TC were staged pT1 and 20.3%had nodal *** thyroid microcarcinomas were noted in 37.5%of ***:Our results were consistent with those of the literature.A high proportion of pT1 and pN0 tumors were noted in our series,suggesting that TC's diagnosis and management was performed at an early stage of the disease in our *** addition,our study enabled us to notice the impact of the Coronavirus disease 19 crisis on the management of TC in our *** studies are needed to establish the epidemiological profile of TC in Tunisia and to assess its clinical and pathological features.

关键词： coronavirus disease 19 epidemiology papillary thyroid carcinoma papillary thyroid microcarcinoma pathology thyroid carcinoma

AN UNCONDITIONALLY STABLE HYBRID FE-FD SCHEME FOR SOLVING A 3-D HEAT TRANSPORT EQUATION IN A CYLINDRICAL THIN FILM WITH SUB-MICROSCALE THICKNESS

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Journal of Computational Mathematics 2003年第5期21卷 555-568页

作者： raja Nassar Mathematics and Statistics College of Engineering and Science Louisiana Tech University Ruston LA 71272 USA

Heat transport at the microscale is of vital importance in microtechnology applications. The heat transport equation is different from the traditional heat transport equation since a second order derivative of temperature with respect to time and a third-order mixed derivative of temperature with respect to space and time are introduced. In this study, we develop a hybrid finite element-finite difference (FE-FD) scheme with two levels in time for the three dimensional heat transport equation in a cylindrical thin film with sub-microscale thickness. It is shown that the scheme is unconditionally stable. The scheme is then employed to obtain the temperature rise in a sub-microscale cylindrical gold film. The method can be applied to obtain the temperature rise in any thin films with sub-microscale thickness, where the geometry in the planar direction is arbitrary.

关键词： Finite element Finite difference Stability Heat transport equation Thin film Microscale

Frequency Analysis of Multiple Layered Cylindrical Shells under Lateral Pressure with Asymmetric Boundary Conditions

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Chinese Journal of Mechanical Engineering 2014年第1期27卷 23-31页

作者： ISVANDZIBAEI Mohammad Reza JAMALUDDIN Hishamuddin raja HAMZAH raja Ishak Faculty of Mechanical Engineering Universiti Teknologi Malaysia

Natural frequency characteristics of a thin-walled multiple layered cylindrical shell under lateral pressure are studied. The multiple layered cylindrical shell configuration is formed by three layers of isotropic material where the inner and outer layers are stainless steel and the middle layer is aluminum. The multiple layered shell equations with lateral pressure are established based on Love＇s shell theory. The governing equations of motion with lateral pressure are employed by using energy functional and applying the Ritz method. The boundary conditions represented by end conditions of the multiple layered cylindrical shell are simply supported-clamped（SS-C）, free-clamped（F-C） and simply supported-free（SS-F）. The influence of different lateral pressures, different thickness to radius ratios, different length to radius ratios and effect of the asymmetric boundary conditions on natural frequency characteristics are studied. It is shown that the lateral pressure has effect on the natural frequency of multiple layered cylindrical shell and causes the natural frequency to increase. The natural frequency of the developed multilayered cylindrical shell is validated by comparing with those in the literature. The proposed research provides an effective approach for vibration analysis shell structures subjected to lateral pressure with an energy method.

关键词： multiple layered ritz method lateral pressure shell boundary conditions

Unsupervised neural networks for solving Troesch＇s problem

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Chinese Physics B 2014年第1期23卷 546-556页

作者： Muhammad Asif Zahoor raja Department of Electrical Engineering COMSATS Institute of Information Technology Attock Campus Attock Pakistan

In this study, stochastic computational intelligence techniques are presented for the solution of Troesch's boundary value problem. The proposed stochastic solvers use the competency of a feed-forward artificial neural network for mathematical modeling of the problem in an unsupervised manner, whereas the learning of unknown parameters is made with local and global optimization methods as well as their combinations. Genetic algorithm (GA) and pattern search (PS) techniques are used as the global search methods and the interior point method (IPM) is used for an efficient local search. The combination of techniques like GA hybridized with IPM (GA-IPM) and PS hybridized with IPM (PS-IPM) are also applied to solve different forms of the equation. A comparison of the proposed results obtained from GA, PS, IPM, PS-IPM and GA-IPM has been made with the standard solutions including well known analytic techniques of the Adomian decomposition method, the variational iterational method and the homotopy perturbation method. The reliability and effectiveness of the proposed schemes, in term of accuracy and convergence, are evaluated from the results of statistical analysis based on sufficiently large independent runs.

关键词： Troesch’s problem artificial neural network genetic algorithm hybrid methods

Biphasic reduction model for predicting the impacts of dye-bath constituents on the reduction of tris-azo dye Direct Green-1 by zero valent iron(Fe^0)

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Journal of Environmental Sciences 2017年第2期29卷 160-169页

作者： raja Kumar Alok Sinha Department of Environmental Science&Engineering Indian School of MinesDhanbad 826004JharkhandIndia

Influence of common dye-bath additives, namely sodium chloride, ammonium sulphate,urea, acetic acid and citric acid, on the reductive decolouration of Direct Green 1 dye in the presence of Fe0 was investigated. Organic acids improved dye reduction by augmenting Fe0 corrosion, with acetic acid performing better than citric acid. Na Cl enhanced the reduction rate by its ‘salting out’ effect on the bulk solution and by Cl-anion-mediated pitting corrosion of iron surface.（NH4）2SO4induced ‘salting out’ effect accompanied by enhanced iron corrosion by SO42-anion and buffering effect of NH4＋ improved the reduction ***, at 2 g/L（NH4）2SO4concentration, complexating of SO42-with iron oxides decreased Fe0 reactivity. Urea severely compromised the reduction reaction, onus to its chaotropic and‘salting in’ effect in solution, and due to it masking the Fe0 surface. Decolouration obeyed biphasic reduction kinetics（R2〉 0.993 in all the cases） exhibiting an initial rapid phase,when more than 95% dye reduction was observed, preceding a tedious phase. Maximum rapid phase reduction rate of 0.955/min was observed at p H 2 in the co-presence of all dye-bath constituents. The developed biphasic model reckoned the influence of each dye-bath additive on decolouration and simulated well with the experimental data obtained at pH 2.

关键词： Biphasic kinetics/model Direct Green 1 Dye-bath additives Fe0

Machine Learning Accelerated Real-Time Model Predictive Control for Power Systems

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IEEE/CAA Journal of Automatica Sinica 2023年第4期10卷 916-930页

作者： Ramij raja Hossain Ratnesh Kumar Department of Electrical and Computer Engineering Iowa State UniversityAmesIA 50011 USA

This paper presents a machine-learning-based speedup strategy for real-time implementation of model-predictive-control(MPC)in emergency voltage stabilization of power *** success in various applications,real-time implementation of MPC in power systems has not been successful due to the online control computation time required for large-sized complex systems,and in power systems,the computation time exceeds the available decision time used in practice by a large *** long-standing problem is addressed here by developing a novel MPC-based framework that i)computes an optimal strategy for nominal loads in an offline setting and adapts it for real-time scenarios by successive online control corrections at each control instant utilizing the latest measurements,and ii)employs a machine-learning based approach for the prediction of voltage trajectory and its sensitivity to control inputs,thereby accelerating the overall control computation by multiple ***,a realistic control coordination scheme among static var compensators(SVC),load-shedding(LS),and load tap-changers(LTC)is presented that incorporates the practical delayed actions of the *** performance of the proposed scheme is validated for IEEE 9-bus and 39-bus systems,with±20%variations in nominal loading conditions together with *** show that our proposed methodology speeds up the online computation by 20-fold,bringing it down to a practically feasible value(fraction of a second),making the MPC real-time and feasible for power system control for the first time.

关键词： Machine learning model predictive control(MPC) neural network perturbation control voltage stabilization

Curve25519 based lightweight end-to-end encryption in resource constrained autonomous 8-bit IoT devices

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Cybersecurity 2021年第1期4卷 147-159页

作者： Shafi Ullah raja Zahilah School of Computing Faculty of EngineeringUniversiti Teknologi Malaysia81310 Johor BahruJohorMalaysia

Robust encryption techniques require heavy computational capability and consume large amount of memory which are unaffordable for resource constrained IoT devices and Cyber-Physical Systems with an inclusion of general-purpose data manipulation *** encryption techniques have been introduced to address the inability of such devices,lacking in robust security provision at low *** article presents an encryption technique,implemented on a resource constrained IoT device(AVR ATmega2560)through utilizing fast execution and less memory consumption properties of curve25519 in a novel and efficient lightweight hash *** hash function utilizes GMP library for multi-precision arithmetic calculations and pre-calculated curve points to devise a good cipher block using ECDH based key exchange protocols and large random prime number generator function.

关键词： Cyber-physical systems IoT Resource constrained IoT devices Lightweight encryption End-to-end encryption Elliptic curve cryptography Curve25519