bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of partial wall motion on MHD mixed convection heat transfer undergoing in a porous cavity filled with Cu–water nanofluid with a centrally mounted heat source
Authors: Mondal Milan K. , Biswas Nirmalendu , Sarkar U. K. , Manna Nirmal K. , Mandal D. K. 
Published: February 2021

Abstract
The Magneto-hydrodynamics (MHD) convective heat transfer process in a partially driven cavity (PDC) containing a centrally mounted heat source is focused in the present study. The cavity is filled with Cu–water nanofluid saturated porous medium. Heated cavity fluid is cooled through the upper half of the two sidewalls. These cold sidewalls are allowed to move in upward direction at the same velocity. The horizontal walls and lower part of the sidewalls are insulated. The cavity subjected to an externally imposed uniform magnetic field. The flow structures and mixed convection heat transfer characteristics are analyzed numerically utilizing developed CFD code adopting FVM and SIMPLE algorithm. The thermo-fluid phenomena are analyzed under a range of governing parameters like Richardson number (Ri), Hartmann number (Ha), concentrations of nanoparticles (ϕ). The results reflect that the heat transfer characteristics of the PDC are greatly influenced by all of the above parameters. Heat transfer is enhanced significantly at the higher Ri and higher volume fraction.
Feasibility study of a liquid desiccant based marine air conditioning system using waste heat of diesel alternators
Authors: Iyer P K , Ganguly A. 
Published: February 2021

Abstract
The present article proposes an alternative form of an air conditioning system for ships using a packed bed liquid desiccant based dehumidification system, followed with regenerative evaporative cooling of air. Abundantly available waste heat from the hot water of Diesel Alternators (DA) is proposed for the regeneration of the desiccant, and seawater for cooling the hot desiccant. A thermal model of the system has been developed and analyzed. The study revealed that the proposed packed bed liquid desiccant system can dehumidify the outdoor air to well below the design humidity ratio (11g kgda
−1). Also, the regeneration of the desiccant through hot water from the DA system is feasible, with a temperature range of 73°C to 90°C. The target enthalpy (43.84 kJ kg−1) can be achieved with a branching ratio of 0.25 to 0.4 at the regenerative evaporative cooler.
Design of Solar Powered Desiccant based Air Handling Unit
Authors: Chaturvedi Vyom , Vishwakarma Devendra Kumar , Bhattacharyya Suvanjan 
Published: February 2021

Abstract
Using an air handling unit (AHU) is a suitable method to meet the ventilation requirements in a conditioned space. This paper proposes two novel design configurations of AHUs, which ensure that the excess load on the AHU cooling coil is minimized using air to air heat recovery units, a desiccant based rotary dehumidifier, and an evaporative cooler. The proposed design is also capable of harvesting surplus water in the process. The impact assessment of the proposed designs is illustrated taking the example of a typical high-humidity design case. Simplified mathematical models were used to analyze the power-saving and moisture harvesting potential of the two configurations. Calculations show that both the configurations reduce the excess load on the cooling coil by a significant amount, while also co-producing surplus water for domestic use.
Air Quality Index Effect on Particles Deposition in Human Respiratory Tract under Natural Breath
Authors: Singh Digamber 
Published: February 2021

Abstract
The huge demands of material goods decayed the breathing air quality. Now, it is reflecting on the clinical respiratory test of humans. Therefore, it is a serious issue that needs to be taken care of. The article throws-up light on important factor such as a deposition of inspired toxic particles under natural breath. The inspired particles are having an aerodynamic diameter 2.5 µm and 10 µm. A three-dimensional CT-scan based Human Respiratory Tract is successfully re-constructed nasal cavity to 7th generation bronchi. The flow is developed during inhalation laminar to turbulent from external nostrils to the tracheobronchial airway due to anatomical effect. It is affected the particles deposition on the various regions due to inertial impaction or curved shape surface of the airway model. The appropriate turbulence model quantifies the internal flow features so that an accurate trajectory of particles transport pattern can be presented. The discrete phase model (DPM) is used for particles tracing on Language frame, which gives the combined effect of anatomical structure and airflow impact on the deposition of particles. It could be useful for the diagnosis of Human airways illness.
Micro analysis of riverbank sediment stability under different wetted surface conditions
Authors: Biswas Debasish , Dutta Arijit , Mukherjee Sanchayan , Mazumdar Asis 
Published: February 2021

Abstract
Quantity of water entrapped between sediment particles imparts strength up to a limit and increases the stability of a riverbank. In the present study, this strength of the sediments has been investigated in terms of escape velocity of the sediments. Escape velocity has a considerable impact on the stability of the bank surface. Here, the “Truncated Pyramid Model (TPM)” for arrangement of the sediments has been utilized to determine escape velocity for different wetted surface conditions and inter-granular spaces. It has been found from the present investigation that irrespective of the variability in the riverbank morphology, the escape velocity attains a large value due to enhancement of the wetted surface area resulting in riverbank stability.
Sunlight mediated photocatalytic reduction of aqueous Cr(Vl) using metal hexacyanoferrate (M = Mn, Ni, Cu and Zn)
Authors: Mandal Manas , Chattopadhyay Krishna , Bhattacharya Swapan Kumar 
Published: February 2021

Abstract
Four different metal hexacyanoferrates, MHCF (M = Mn, Ni, Cu and Zn) were synthesized via a simple, cost effective precipitation method. The as-synthesized MHCF were characterized using XRD analysis and FESEM images were recorded for the analysis of morphology. Among the four compounds, ZnHCF exhibited most effective catalytic property for visible-light driven photoreduction of Cr(VI) to Cr(III), with excellent photochemical reducing capability of 68% within 2 h.
Heat Transfer and Pressure Drop in Transitional Flow: A Short Review
Authors: Bhattacharyya Suvanjan , Vishwakarma Devendra Kumar , Soni Manoj Kumar 
Published: February 2021

Abstract
In the present work, an effort has been made to present the short review of all the numerical as well as experimental studies done in the field of heat transfer and pressure drop in the transitional flow regime. The experimental and numerical studies on transition flow are reported. Though, there are several challenges to do experiments in transition flow regime. Various techniques are also discussed and summarized. Results show that the techniques prove outstanding performance, but few methods quiet suffer from high pressure drop. As per discussion, new viewpoints on the current research gaps and future research ways have been providing for the development of heat transfer techniques.
Nutmeg oil production process analysis using Business Process Improvement-a case study
Authors: Darma R , Sastra H Y , Arhami  , Erwan F 
Published: February 2021

Abstract
This study delivers the analysis of business process of the nutmeg oil production process in a small and medium enterprise (SME) in South Aceh using Business Process Improvement (BPI). This study analyses the pre-refining, refining and post refining activities of the nutmeg oil production process based on economics, labour, and technology aspects. This study carries out 3 phases of BPI which are organizing for improvement, understanding the process, and streamlining. This study reveals activity efficiency from 31 (on the as-is model) to 26 (on the to-be-model). The activities are further analysed using Devil’s Quadrangle, particularly for cost and time dimensions. As a result of the new technology implementation being proposed, the fixed cost has increased by 48.33%, the variable cost has decreased by 47.64% and time has improved by 33.33%. Moreover, this study provides a recommendation to implement the to-be-model of the business process as an SOP for the nutmeg oil production process in South Aceh SMEs.
The integrated lean and green manufacturing system: a case study at the peeled loaf production
Authors: Ilyas  , Suhendrianto  , Lufika Raihan Dara , Meutia Syafira 
Published: February 2021

Abstract
The bakery industries soared as bread become one of the staple food for many people. UD. ABC is one of the bakeries in Banda Aceh that produces various types of bread and jam includes the peeled loaf. Peeled loaf uses many machines for its production process thus will produce waste and consume lots of energy. This study aims to analyze waste and measure energy use in the production process of peeled loaf based on the integrated Lean and Green Manufacturing concept. There are VSM and EVSM as a tool to describe the flow of material and energy usage from the production process. The activities of Value Added (VA), Non-Value Added (NVA) and Necessary Non-Value Added (NNVA) will be analyzed using PAM. The tool for improvement recommendations is five whys analysis. Then, the Future State Map (FSM) shows the improved design with a reduction in the lead time of 20.28 minutes. From this study also obtained the results of saving energy use as much as 0.13 kWh. This energy-saving will realize a lean and environmentally friendly production process at UD. ABC.
Performance of GLCM Algorithm for Extracting Features to Differentiate Normal and Abnormal Brain Images
Authors: Indra Zul , Jusman Yessi 
Published: February 2021

Abstract
Brain cancer is a malignant brain tumor that can spread quickly to other parts of the brain and spine. However, not all tumors are malignant and can be treated before they become malignant. The purpose of this study is to discover brain abnormalities based on CT scan images by using T-test algorithm. Thus, it can be one of solution for early detection of brain abnormalities in order to treat it before it becomes a malignant tumor or cancer. As dataset, this research using 40 images consisting of 20 normal brain images and 20 abnormal brain images. There are two algorithms which are used in this research i.e. Gray level co-occurrences matrix (GLCM) for feature extraction and T-Test for brain image classification. Prior to feature extraction, brain image is converted to Graycomatrix in order to adjust the brightness of the image. The final step is image classification by using the T-test algorithm. From 40 test results which are used in this study, GLCM method can extract 8 features that can significantly distinguish the image of normal brain and abnormal brain. For the T-test algorithm, it is found that each feature has a P-value <0.05 which means that extracted features can be used for the further classification process of brain image abnormality. Thus, it can be inferred that this research framework which is employed the GLCM and T-test algorithm can be used to assist the process of early diagnosis of brain cancer.
Performance Measurement Analysis Using The Balanced Scorecard Method for Government Institution in Aceh
Authors: Lufika Raihan Dara , Syahriza  , Sary Cut Indrian 
Published: February 2021

Abstract
The public and non public company have the same goals in adjusting their technology and system for competition. The performance measurement is one way to control the company to achieve their vision and mission. This research aims to determine whether or not the performance of a government institution in Aceh is according to their standard. The first step is identify the problems using the Balanced Scorecard method, with four perspectives, namely financial, customer, internal business processes, and growth and learning. The result shows that there are 18 Key Performance Indicators (KPI). The next step is to calculate the values of each indicators. Finally, the result is compared with the KPI standard. The final result shows that the lowest value of indicator in 2017 is the simple work procedures with a score of 47 and a final score of 0.015. Meanwhile, the highest value of indicator in 2017 is the budget utilisation with a score of 124 and the final score of 0.245. Overall, the Disperindagkop has a very low value of 13% which means the condition is very bad. Therefore, the company needs further improvements to increase their overall performance value.
Experimental assessment of solar radiation effect on the stress-strain state of a span with an orthotropic slab
Authors: Gridnev S Yu , Podlesnykh I S , Barchenkova N A 
Published: February 2021

Abstract
The article is devoted to the experimental assessment of the solar radiation effect on the stress-strain state of a span with an orthotropic slab. Preliminary, comprehensive instrumental measurements of the road surface temperature distribution and the span elements were carried out at different times of the year. A detailed picture of the temperature distribution over the cross-section height was determined at different air temperatures and the Sun positions. To assess the solar radiation effect, instrumental measurements of deflections and deformations of the span‘s main beams under the influence of solar radiation were carried out and the nature of the change in the stress-strain state of the span during the day was determined. The measurements were carried out using the deflection meters and strain gauges mounted on the main beams that experience uneven heating throughout the day. Using the developed and previously tested finite element model, the calculated values of the span bearing elements‘ stress-strain state parameters for each case of exposure to solar radiation have been determined, taking into account the experimentally obtained temperatures. Comparison of the calculation results obtained on the basis of field measurements and calculation in the program of the finite element method has been carried out. The most unfavorable cases of the solar radiation effect on the main beams‘ displacement have been revealed.
Energy method for solving the stability problem of an elastic rod with variable stiffness taking into account its dead weight
Authors: Yazyev S B , Akhtyamova L Sh , Chepurnenko V S , Reshetnikov A A , Ziganshin A D 
Published: February 2021

Abstract
The article is devoted to solving the stability problem of an elastic rod with variable stiffness taking into account its dead weight. The variable stiffness parameter is the rod section, in particular, the moment of inertia Iz(x). The moment of the section inertia and the intensity of the distributed load (dead weight) vary according to the power law. As a result, the solution of the resolving integro-differential equation for this model (cantilever rod) by the energy method was obtained. It is shown that the obtained solution allows satisfying all boundary conditions and another approach to the energy method use is found. The energy method in this case made it possible to determine the exact values of the critical load with a particular change in the rod cross-section taking into account its dead weight.
Comparative analysis of typical and reinforced support parts’ design parameters for reinforced concrete roof beams
Authors: Degtyarev G V , Saida S K , Hajal Ahmad Al 
Published: February 2021

Abstract
Reinforced concrete roof beams are the structural elements of industrial buildings that are most susceptible to destruction in emergency situations and abnormal operation are observed; the schemes for strengthening beams are proposed and the parameters’ analysis in comparison with a typical solution is given.
Research of the additional building influence on the foundation in a stress superposition existing along the radius zone
Authors: Ali Yahya Nasser Al-Bukhaiti , Keita Yaya , Ledenyov V V , Savinov Ya V , Umnova O V 
Published: February 2021

Abstract
The comprehensive studies’ results of the soil environment stress-strain state from the loaded and unloaded foundation model action are considered and compared:
1. Laboratory experiments with foundation models were carried out, on the basis of which a numerical SSS soil foundation analysis was carried out, empirical relationships between the influencing parameters and the foundations’ additional settlement amount due to their mutual influence on each other were obtained.
2. Numerical modeling of foundations located in the mutual influence zone by the finite element method of numerical research using the software package Plaxis 3D was performed.
3. A numerical analysis of the influence of the distances between the stamps’ axes on the additional stresses’ values from the loaded foundation is given using the method of angular points, as a method recommended by the current regulatory documentation [13].
These results can be used to refine the existing calculation methods. The difference between the results of numerical and experimental modeling is noted.
Determination of stress-strain state of short eccentrically loaded concrete-filled steel tubular (CFST) columns using finite element method with reducing the problem from three-dimensional to two-dimensional
Authors: Chepurnenko V S , Yazyev B M , Urvachev P M , Avakov A A 
Published: February 2021

Abstract
The article presents the derivation of the FEM equations, which make possible to calculate short concrete-filled steel tubular columns in a plane elastic formulation. Steel tube is modeled by 1D bar finite elements. The obtained results are compared with the results of calculations using 3D solid and shell finite elements.
Bamboo in modern construction and architecture
Authors: Lapina A P , Zakieva N I 
Published: February 2021

Abstract
The use of bamboo in construction and architecture is considered in the article. The main advantages of bamboo in comparison with modern building materials are considered, some technical characteristics of the material are given. The conclusion about bamboo as a renewable natural material, which in the future may replace the steel and reinforced concrete structures people are used to, was made. The design characteristics of bamboo make it possible to use it in complex architectural forms’ creation.
Synthesis of virtual reality technologies and design
Authors: Vishnevskaya E V , Strekalova N B 
Published: February 2021

Abstract
The article examines the phenomenon of synthesis of virtual reality and the design of a digital environment and possible areas of its application. The main terms and definitions are given. The historical background of the development and formation of virtual reality technology is given. The main technologies providing design means and virtual reality technologies’ interaction are described. The theoretical basis for the interaction of virtual reality technologies and design tools, such as visualization and image creation techniques, is considered. A design solution for using virtual reality technologies in design as a method for solving design and artistic problems is presented.
Features of the Kuban life environment historical formation
Authors: Subbotin O S 
Published: February 2021

Abstract
The specificity of the Kuban settlements‘ historical formation is considered in the context of regional peculiarities, as well as the folk traditions and customs of the peoples inhabiting the indicated territory. The main socio-economic prerequisites for the living environment formation in the settlements are indicated. Much attention is paid to the historical settlements of the Kuban, the objects of cultural heritage, their preservation and restoration. The specific planning structure of the settlements and regional identity in the constituent territories‘ diversity of these settlements are noted. Attention is focused on the settlement structure, on its formation over a long historical period of architectural and urban development. The following features have been proven: historical continuity, the transfer of cultural values, folk traditions from generation to generation.
Fractality and urban environment
Authors: Mayatskaya I A , Yazyev B M , Yazyeva S B 
Published: February 2021

Abstract
The article considers a very interesting trend in architecture, which uses fractal geometry in the complex structures‘ design. Architectural bionics gives a possibility to find the most unusual in shape and structurally optimal building structures. If earlier the architects got their inspiration from natural objects, then modern designers also use mathematical methods, for example, fractal geometry.
Lightweight concrete based on crushed foam glass aggregate
Authors: Bessonov I V , Bulgakov B I , Zhukov A D , Gradov V A , Ivanova N A , Kodzoev M-B Kh 
Published: February 2021

Abstract
Increased requirements for energy saving in the operation of buildings and structures, as well as the need to adjust the raw material base, presupposes the development and improvement of lightweight concrete technologies, including the use of effective lightweight aggregates, which include granulated foam glass. The goal of the study was to develop a method for selecting the composition of lightweight concrete with foam glass gravel as a large aggregate and foam glass powder as a fine aggregate. To achieve this goal, an experiment was carried out to optimize the composition of lightweight concrete and determine the optimal proportions of the used fractions of foam glass gravel. The raw mix for producing lightweight concrete included the following components: Portland cement, foam glass gravel (mixture of fractions), glass powder (crushed foam glass gravel of 0.315 mm in size), soda glass, super plasticizing admixture, air-entraining agent and water. As a result of the implementation of the experiment and the use of the apparatus for mathematical planning, processing and optimization of the data obtained, the optimal costs of main components were established, as well as the proportions of the content of coarse aggregate fractions.
On the problems of controllability and uncontrollability for some mechanical systems described by the equations of vibrations of plates and beams with integral memory
Authors: Romanova A V , Romanov I V 
Published: February 2021

Abstract
Controllability problems for some models of plates and beams with integral memory are considered. The vibrational equation of the plate contains an Abelian kernel in the integral term, and the vibrational equation of the beam contains a continuous kernel consisting of a finite sum of decreasing exponential functions. It is proved that by controlling the whole domain, the first system cannot be driven to a state of rest, and for the second system, controllability to rest is possible.