bluuebunny/crossref_metadata_2025_split huggingface dataset:
Rupture Mechanism of Cerebral Carotid Aneurysm Using Computational Methods
Authors: Sawant Vrushabh , Chaudhari Rohit , Sreeja V , Eienstein Albert , Jebaseelan Davidson , Jebaraj C 
Published: April 2021

Abstract
This study helps to predict the rupture mechanism of an Inter Carotid Artery (ICA) for saccular aneurysm study through the Finite Element Method (FEM) combined with Discrete Element Method (DEM) of LS DYNA and also compared with a Fluid Solid Interaction (FSI) study. Also the thickness of an artery wall was found by using James-Guth Stress Strain Relation with validation. It was concluded that the Finite Element Method with Discrete Element Method was more efficient than FSI as the computation time was reduced by 51.55% with an error of 0.08%.
Numerical analysis of hat stiffened composite panels for pre and post buckling conditions
Authors: Ram Murthy V , Annamalai K , Elango M 
Published: April 2021

Abstract
This research aims in studying the pre-buckling and post-buckling behaviour of composite panels stiffened by hat stiffeners under compressive loading. Stiffened panels are used in aerospace, marine and also in bridge structures. They are used to make the plate girders stiff. By using composite materials, the strength can be increased, and the weight can be reduced. In Composite panels which are stiffened, local buckling and failure of panel happens because of the applied compressive loads and due to combination of compressive and shear loads. The Collapse of the stiffened composite structure starts from the intersection between the plate and the stiffeners due to stress effect caused by deformation of lamina skin and stiffeners then leads to the structural buckling of skin of the panel. This research uses nonlinear Finite element approach to investigate the collapsing behavior using ABAQUS software.
Study on performance of various stent materials using explicit finite element analysis
Authors: Mane Ajinkya R , Davidson Jebaseelan D 
Published: April 2021

Abstract
In many countries, cardiovascular disease is the main cause of mortality. Stent is tiny wire mesh tube which is inserted in coronary artery to get rid of blockage. Stents are available in various types Bare metallic, Drug eluting and Bioresorbable. The use of bioresorbable stents reduces the threat of post-implantation effects like stent thrombosis and bleeding, it also dissolves in the body over the period of time once the healing is done while re-narrowing of the artery is more likely to occur in bare metal stents. Metals are important materials for stent due to mechanical properties and ease for Image processing. The objective of the work makes an effort to compare various materials used in stent using explicit analysis. For analysis, we used AISI 316L stainless steel, Nitinol and Mg alloy (WE43) which are standard materials for stent application. Explicit finite element study was done to study the performance of stent at varying pressures from 100 to 120mm of Hg, which is normal blood pressure range of a human body. This computational study found that Nitinol has stress values from 2.18MPa-2.62MPa and was less compared to other materials. Further study are planned to study the impact of coating that can enhance the biocompatibility.
Three-Dimensional (3D) printing and bioprinting for orthopaedic biomaterials - A short review
Authors: Sughanthy Siva A.P , Ansari M.N.M , Nordin Noor Afeefah , Hwei Ng Min 
Published: April 2021

Abstract
Tissue engineering is a non-conventional approach in creating artificial organs and tissues to heal from bone fracture or organs malfunction by regenerating the damaged tissues. This review paper focuses on bone scaffold fabrication methods using three-dimensional (3D) printing and bioprinting for tissue engineering applications. Various types of biomaterials and fabrication techniques of bone scaffolds aimed for tissue engineering were thoroughly discussed. Suitability of biomaterial and polymer for bone scaffolds is deliberated as part of the review paper. Several biomaterials, mechanical properties and porosity of scaffolds were reviewed to give an in depth understanding on 3D printing and tissue engineering field.
Numerical Investigations into the Effect of Confinement on the Stability of an Oscillating Planar Liquid Jet
Authors: Arote Ashish , Bade Mukund , Banerjee Jyotirmay 
Published: April 2021

Abstract
The liquid jet under certain conditions when perturbed will lead to instability. The understanding about an effect of confinement on these jets is still obscure. Hence, numerical investigations are reported in the present study for two phase spatially oscillating planar jet in a quiescent air under the confined conditions. Simulations are performed by solving the Navier-Stokes equations using volume of fluid (VOF) method to track the air-water interface. In the present study an oscillating jet is subjected to various confinement ratios (CR) to understand the jet behaviour under such conditions. It is demonstrated that the amplitude of oscillation increases as the confinement ratio decreases. This behaviour is a result of increased intensity of vortex rotation at each jet peaks as the confinement ratio increases. Moreover, it is also demonstrated that the vortex structure interact with the side-walls and disturb the incoming flow causing non-linear growth of oscillations leading to primary breakup in these jets.
Computation of a Compartment Fire with Smagorinsky Sub-Grid Scale Model
Authors: Dhurandher Bhisham K , Kumar R , Dhiman A K , Dubba Santhosh K 
Published: April 2021

Abstract
A fire tests using plywood crib as fire source was done in a cubical compartment to investigate the fire development and temperature distribution. The dimension of the experimental compartment was 4 m high, 4 m wide and 4 m length with a door opening of 2 m × 1 m wide located at one of the compartment wall. Several parameters were measured which includes fuel mass loss rate, compartment gas temperature, centerline doorway temperature, heat flux and wall surface temperature. Three-dimensional numerical simulations were performed using large eddy simulation with different values of Smagorinsky sub-grid scale constant. In order to accurately investigate the behavior of fire within the compartment by computational fluid dynamics (CFD), it is vital to study these Smagorinsky sub-grid scale constant. Numerically predicted results with various Smagorinsky sub-grid scale constant was compared with the physical results. It was found that the varying the Smagorinsky constant affect the numerical simulation results.
Thermodynamic Assessment of a Gas Turbine System Combined with A Solid Oxide Fuel Cell Powered by Synthetic Gas from Municipal Solid Waste
Authors: Venkitesh K.S , Daniel Joseph , Sreekanth Manavalla 
Published: April 2021

Abstract
In this work, a detailed thermodynamic analysis is performed on a solid oxide fuel cell-gas turbine combined system. The fuel input to the fuel cell is the synthetic gas produced from the gasification of municipal solid waste. The efficiency and output power of the system are calculated and the system is analyzed for its performance by variation of parameters which includes compression ratio, fuel utilization factor and current density. The work is done based on the Municipal solid waste generated in Indian cities. Destruction of exergy is calculated from exergy analysis. System is modelled using flow sheeting program Cycle Tempo®. Components contributing to major exergy destruction are combustor and fuel cell. Energy efficiency of 44.5%, exergy efficiency of 39.2% and a power output of 170 kW is obtained in this system. This CHP system is very much acceptable for restaurants, shopping complex and other small-scale applications where power requirement is less.
Design and Vibration Analysis of Pump Assembly for Two Types of Cushy Mount
Authors: Mounika CH , Annamalai K , Vinoth kumar S , Ponraj A 
Published: April 2021

Abstract
This paper is mainly focused on vibration characteristics of pump motor assembly and selecting suitable mount for the assembly using FEA and experimental approach. Pump motor assembly is connected to base structure by mount. Modal and FRF Analysis are performed to study the mode patterns, natural frequencies and vibration response of the entire structure. Experimental study helps to evaluate the vibration amplitude values of the structure. FFT analyser is used to measure the RMS acceleration of the entire assembly, BK (Bruel & kjaer) Connect software is used to extract the data from FFT analyser. Comparison study reveals and evaluates the vibration characteristics of two mounts and the best mount is suggested. The first section in your paper.
Processing of exposure results for composite material with the choice of their optimal composition
Authors: Bulgakov A , Afonin V , Erofeeva I , Fedortsov V 
Published: April 2021

Abstract
The article presents the results of processing a number of compositions of composite materials sustained under cyclic temperature changes, as well as changes in humidity and positive temperatures. A method is proposed for determining the optimal composition of materials, taking into account changes in such characteristics as hardness, modulus of deformation of the material and the elastic modulus of the material during exposure.
A review of flash floods in the Dobrogea Region
Authors: Buzgaru N , Maftei C 
Published: April 2021

Abstract
The last decade is characterized by an increase in the occurrence of flash floods, fact which is confirmed by the worldwide endeavors undertaken by the WMO (World Meteorological Association) which initiated the signing of a series of memorandums for collaboration with other worldwide institutions meant to lead to the elaboration and implementing of a complex flash flood warning system. The aim of this paper is to analyze the level of implementation of said system in Europe and Romania and the analysis of the flash flood occurrence, specifically in the Dobrogea region of Romania.
Insights from the management of a large research infrastructure in Romania: National Network for the Seismic Monitoring and Protection of Building Stock at NIRD URBAN-INCERC
Authors: Dragomir C S , Craifaleanu I G , Meiţă V , Georgescu E S , Dobre D , Sandu M , Cişmelaru A 
Published: April 2021

Abstract
The National Network for the Seismic Monitoring and Protection of Building Stock is a key infrastructure of the National Institute for Research and Development in Construction, Urban Planning and Sustainable Spatial Development "URBAN-INCERC" in Romania. This infrastructure includes at present, among other research facilities, a strong-motion network of 64 permanent seismic stations, to which other temporary stations are added for various short-term vibration monitoring projects. Since its establishment in 1967, the seismic network has played an essential role in recording the earthquakes that affect Romania. Today, the seismic stations are distributed all over the country, according to its characteristic seismicity patterns. Most of them use state-of-the-art recording and communication equipment, being permanently connected online to the Data Center in Bucharest. The management of the network implies conducting a complex set of activities, centered on the recording, processing, analysis and interpretation of natural- and human-induced vibrations. All of these are seconded, in parallel, by various maintenance, reporting, logging, communication and dissemination tasks. The logistic and financial management also plays an important role. A rational and efficient administration of the seismic network cannot be acquired without a rigorous organization of data flows pertaining to the various activities performed. The paper provides insights from the organization of the network, highlighting the intercorrelation between the hierarchical levels of its functionality and the logical course of operation. A brief review of the challenges and solutions gradually developed and implemented by the members of the network team, in order to provide the required functionality, is presented.
Calculation of disc friction power in pumps at operation on viscoelastic fluids
Authors: Morozov V , Morozov A 
Published: April 2021

Abstract
The flow of viscoelastic fluid in the gap between the impeller disc and the pump wall for laminar flow mode is considered. Waste water sludge (WWS) was used as a working fluid. Its flow is described by viscoplastic fluid model. The results of theoretical and experimental studies of disk friction at WWS are presented and formulas are proposed for calculation of disk friction power between wheel disks and pump body.
Using energy of compressed natural gas as an environmentally safe source of heat energy of the heating system of the industrial premises
Authors: Pakhomova E , Grigorova N , Monastyrev P , Semicheva N 
Published: April 2021

Abstract
The housing and utilities system is extremely energy-intensive and currently impedes the implementation of energy efficiency policies. In this regard, the development of science-based technology for environmentally friendly resource-saving consumption of compressed natural gas, as a source of thermal energy, is becoming relevant. The article describes the technical solution for using the energy of compressed natural gas as a source of thermal energy, which consists in using a vortex heat exchanger in the heating system of a gas control station, which allows you to generate thermal energy due to technologically unused energy, which is the pressure drop between high and medium gas pipelines as well as medium and low pressure natural gas. This technical solution is aimed at reducing energy costs and ensuring environmental safety when using compressed natural gas as a source of thermal energy. To determine the possibility of practical use of this technical solution in the production room for installing gas control equipment, an analytical expression of the temperature of the wet gas mixture after the process of condensate-evaporative heat and mass transfer in a vortex heat exchanger has been obtained, which allows us to predict the parameters of the coolant in the heating system of the production room.
Modelling the structure of Carol I Mosque Minaret taken into account the seismic evaluation
Authors: Suliman S , Gramescu A M , Gelmambet S 
Published: April 2021

Abstract
The paper aims to analyze the behavior of seismic actions of minaret – structural components characteristic of mosque. As it is known, the characteristics of this construction are governed by the slenderness and the distribution of the constituent materials by height. An important component is the most real quantification of the characteristics resistances as well as the impact of other loads in operation. The paper presents the case study – the minaret of the Carol I Mosque from Constanta, an emblematic historical monument of Constanta made by Eng. Gogu Constantinescu 110 years ago.
Estimation of energy consumption during cross-flow membrane filtration of oil/water emulsion
Authors: Barambu N U , Bilad M R , Nordin N A H , Bustam M A 
Published: April 2021

Abstract
Abstracts: Pressure driven membrane filtration has been widely adopted for oil and water recovery from oil/water emulsion. The technology offers numerous economic and environmental advantages. However, specific energy consumption remains a critical factor for its economic assessment. The specific energy consumption depends on several factors, among which is the fouling filtration period/time. Therefore, the fouling filtration time indirectly affects the overall economic viability of the system. Herein, the effect of fouling filtration time on the specific energy consumption during cross-flow filtration of 1000 ppm oil/water emulsion was evaluated. During the first 20 min of oil/water emulsion filtration, the energy consumption was found to be 0.0225 KWh/m3. While the filtration was continued to 90 min, the system requires 0.0301 KWh/m3 energy input. The tradeoff between fouling filtration time and energy consumption was found to be just before 30 mins. Suggesting that at 30 mins fouling filtration time, clean water flushing/backwashing would restore significant hydraulic performance and thus, less increase in energy input would be required. At the tradeoff point 0.0254 KWh/m3 energy was required to drive the filtration. This represents up to ∼19 % energy saving compared to the straight nonstop 90 min fouling filtration time. The overall results demonstrated that fouling filtration time affects the overall economics of cross-flow membrane filtration.
Evolution of Photobioreactors: A Review based on Microalgal Perspective
Authors: Ahmad Imran , Abdullah Norhayati , Koji Iwamoto , Yuzir Ali , Eva Muhammad Shaza 
Published: April 2021

Abstract
Energy is indispensable for bringing competence, resilience, and comfort for the ever-advancing human lifestyle. Therefore, to satisfy the growing energy requirement researchers are trying to delve in exploring sustainable and renewable energy sources that will contribute to the reduction of carbon footprint and ultimately help to check the issue of global warming caused by the increased emission of CO2, due to the excessive usage of non-renewable and exhaustive fossil fuels. Microalgae are having the potential which can be exploited to produce biofuels (substitute for fossil fuels) and other value-added compounds. Microalgae is a form of unicellular photoautotrophic microorganism which can attain higher rate of proliferation. Microalgae is having merits over other terrestrial crops and fossil fuels as they have higher productivity of oil per hectare of land. Various other advantages of microalgae include their tolerance in different types of environment because of their ubiquitous nature (in terms of pH, salinity, and temperature). Furthermore, they can be cultivated in nonarable land and wastewater which will resolve the food-fuel duel and problem of freshwater usage, therefore leading towards environmental sustainability. The main factors governing the growth and cultivation of microalgae are light, CO2/air, nutrients, process parameters (pH, temperature, growth medium etc) and most importantly the type of system used for cultivation. The systems usually employed for the cultivation of microalgae are open system (open ponds, raceway ponds, scrubbers), closed system also commonly known as photobioreactors (flat plate and tubular photobioreactors) and hybrid system in which separation of biomass growth and lipid accumulation is achieved in two stages. All the systems have some merits and demerits but photobioreactors are widely accepted and used because they are having an upper hand over open system because of the optimised control of the growth conditions, contamination evasion and efficient productivity of microalgal biomass. This review will provide an insight to different parameters which govern the growth of microalgae and various types of photobioreactors with their advantages and disadvantages. This study will help in the optimized selection of the photobioreactors for a particular species of microalgae because despite the continuous and intensive research going on the cultivation systems it is a challenge for the researchers to achieve a suitable and economically viable system.
Ultrasonic Properties of Zinc-Lithium Phosphate Glass: Effect of Strontium
Authors: Nur Fatihah N. , Nurhafizah H. , Ahmad N.H. 
Published: April 2021

Abstract
Glasses of the general formula (50-x)P2O5 - 30ZnO - 20Li2O - (x)SrCO3, where (0.00 ≤ x ≤ 5.00 mol%) were prepared via the melt-quench technique. The mechanical properties of the glass are utilized by using ultrasonic testing. The absence of distinct and Bragg peaks in XRD spectra, confirming the amorphous nature of samples. The glass densities are found increases as well as the packing densities with respect to SrCO3 concentration, which leading to the decrease in molar volume values, indicating the rigidity of the glasses. The ultrasonic results and other measured parameters attribute to the Sr ion increase in the cross-link density by the formation of P-O-Sr due to the value of Poisson’s ratio obtained are between range of 0.1 to 0.2.
Fabrication and characterization of hydroxyapatite based cow bone polysulfone mixed matrix membrane
Authors: Nor Suhaida Rasman Siti , Riduan Jamalludin Mohd , Najieha Kamarudin Suraya , Khadijah Hubadillah Siti , Arif Budiman Pauzan Mohammad , Hafiz Dzarfan Othman Mohd 
Published: April 2021

Abstract
In this work, polysulfone (PSf)/hydroxyapatite (HAp) mixed matrix membrane were prepared were prepared by using phase inversion technique for ultrafiltration application. The prepared PSf/HAp mixed matrix membrane were characterized in term of morphological and physicochemical properties by using SEM, contact angle measurement, membrane tensile measurement and membrane porosity. Meanwhile the performance of PSf/HAp mixed matrix membrane was conducted in term of pure water flux (PWF) by using permeability machine. The surface morphology of the MMMs showed the increasing pore number and size as the concentration of HAp increase. The increment weight ratio of the HAp in PSf membrane enhanced the membrane water flux from 113.44 L/m2.h.bar to 228.13 L/m2.h.bar due to increased porosity of the membrane. Meanwhile, the strength of the membrane was increased from 3.82 MPa to 5.2 MPa as HAp increases from 0 to 1.0 wt.% and decreased to 2.49 MPa at 1.5 wt.% HAp. This study suggested that HAp is a promising candidate as additive that can improve PSf membrane performance.
Removal of direct red dye using polysulfone-chitosan ultrafiltration membrane
Authors: Hamdan J , Sabri N S M , Hasbullah H , Sokri M N M , Rahman S A , Kadirkhan F 
Published: April 2021

Abstract
Textile industries are one of the largest pollution contributor to the environment through high amount of wastewater discharge that contain high concentration dyes. The present state of application of using membrane technology in the removal of dyes from textile wastewater has shown positive pathway for this research. Chitosan are biopolymer that are naturally occurring. It is used as a hydrophilic additive in the fabrication of polysulfone (PSF) and chitosan (CS) membrane. Different loadings of CS at 0.1, 0.3, 0.5, 0.7 and 1.0wt% were used. The fabricated PSF-CS membrane by phase inversion method were characterized using SEM for its morphology, FTIR for its functional group and contact angle for membrane hydrophilicity. As the addition of CS increase the hydrophilicity of the PSF-CS membrane, excessive CS precipitation was observed at chitosan loading at 1.0wt% creating a large macro void causing lower permeation performance. It is found that PSF-CS membrane with 0.7wt% has the best contact angle and dye rejection performance of 65.49º and 99.78%.