bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of operating modes of hydropower plants with determination of the price for a hydro resource using complex criteria of ecological and economic efficiency
Authors: Sekretarev Yu A , Myatezh T V , Gorshin A V 
Published: March 2021

Abstract
At present, the influence of technologies on the environment became comparable with natural processes at the Earth. Therefore, the use of renewable energy sources, including water resources, is very important for the energy market operated as the Internet of things. The present paper proposes a universal method for analyzing the efficiency of technical systems using the combination of an optimization method and a method of marginal utility evaluation. Based on the comparison of water volume at a hydropower plant (HPP) and fuel amount at a combined heat and power plant (CHPP) that is used for generation of 1 kW power, it is possible to determine a water price for a HPP. Using the examples of Novosibirsk HPP and CHPP, it is expected to develop an estimation of economic effect from the implementation of the developed criteria, the proposed method of determination of a water price at HPP, and the method of separating fuel costs at CHPP. As a result of implementing the developed method for theHPP, theprice of sold electricity in the flexible energy market will be comparable with the price for sold electricity produced at theCHPP, being equal to approximately 330 RUB/MW·h. Moreover, CHPP are expected to have savings of specific fuel consumption for electricity generation in the amount of 5 g/kW·h and, in some case, 10 g/kW·h. In terms of money, this amounts about 7,350,000 – 14,700,000 RUB per month.
Qualitative scenario analysis of development of energy storage systems in Russia until 2035
Authors: Logacheva A G , Zatsarinnaya Y N , Stepanova E G , Rep’ev E V , Fedotov E A 
Published: March 2021

Abstract
A stationary energy storage boom is forecast for the next two decades, according to a report by the US consulting firm Bloomberg New Energy Finance (BNEF). BNEF analysts believe that energy storage around the world will grow exponentially, from a modest 9 GW / 17 GWh commissioned by 2018 to 1,095 GW / 2,850 GWh by 2040. Experts call the ongoing global changes a “contributory revolution”. The development of energy storage systems is related to trends in the energy sector, energy costs, political and environmental conditions in the world. Moreover, energy storage technologies can face both general and specific risks. The authors of the article took into account possible risks and carried out a qualitative scenario analysis of the development of energy storage systems in Russia in the future until 2035. The authors used a probability scale to avoid cognitive biases in the scenario assessment. The most likely scenario for the development of ESS today we consider the basic.
The waste-to-energy technology of the energy sector
Authors: Nikolaeva L A , Iskhakova R Ya 
Published: March 2021

Abstract
Nowadays a problem of reducing anthropogenic impact on the environment is important. In the present article a perspective method of waste-to-energy technology of the energy sector is reviewed. This article focuses on the carbonate sludge (large-tonnage industrial waste) produced by power stations that is used as a sorption material, and adsorption properties of carbonate sludge, its influence on activated sludge is considered. Sludge is a microporous sorbent which is confirmed by the sorption curves for oil products and ammonia nitrogen. The carbonate sludge increases the activated sludge volume index by improving its sedimentation properties and the efficiency of centrifugation during activated sludge dewatering due to the rupture of hydrate shells of activated sludge. Granules that can be used as a fuel are obtained at the following mass ratios: excess activated sludge - 70%, carbonate sludge - 8%, binder - 22% by weight (starch and technical lignosulfonate). The production technology of fuel granules for incineration has been developed based on the research results.
On the Possibility of Application Infrared Crystalline Fibers for Transfer of Temperature Signals from Bearings inside Nuclear Power Plants’ Containment
Authors: Kharaim M P , Kostarev V S , Akif’eva N N , Yuzhakova A A , Zhukova L V , Korsakov A S 
Published: March 2021

Abstract
The possibility of application flexible infrared Nanopolycrystalline (PIR) fibers made from radiation-resistant crystal systems AgBr – TlI and AgBr – TlBr0.46I0.54, for contact-less measure temperature bearings of own needs mechanisms and signal temperature transmission from nuclear power plant containment is considered. Radiation resistant allows the use that crystals and PIR fibers in high radiation conditions up to 500 kGy, what opens great opportunities of involving that optical materials in atomics. The class of the presented materials is distinguished by a wide transmission range in the range from 0.4 to 60 µm for crystals and from 2.0 to 25 µm for PIR fibers without absorption window, low optical loss (up to 0,1 dB/m), high flexible. The PIR fibers proposed in this paper are made by extrusion from single crystals of silver and thallium halides and are transparent in the mid-infrared range from 2 to 25 µm, which, according to the laws of Planck and Wien, corresponds to temperatures from +1100 °C to –200 °C.
Experimental investigation on multiferroic properties of Ti-doped BiFeO3 bulk and nanoparticles
Authors: Arafat M Y , Anjum N , Lamia S N E 
Published: March 2021

Abstract
Bismuth ferrite (BiFeO3), an inorganic chemical compound, has added a new dimension to the multiferroic materials research. We previously reported the synthesis routes and improved photocatalytic properties of 10% Ti-doped BiFeO3 (BiFe0.9Ti0.1O3). In this study, we investigated the ferroelectric and ferromagnetism properties of BiFe0.9Ti0.1O3 bulk and nanoparticles and compared them with those of undoped BiFeO3 bulk ceramics. Elemental analysis was conducted to explore the chemical composition in the doped samples. The magnetic characterization and electrical measurements were performed in Vibrating Sample Magnetometer and Ferroelectric Loop Tracer respectively. Magnetization versus applied magnetic field, leakage current density, and polarization versus electric field measurements reveal improved multiferroic properties in Ti-doped bulk and nano samples compared to undoped BiFeO3 bulk.
Fatigue life prediction of cfrp composites in plane bending by modal analysis
Authors: Kulkarni Pravin , Potdar Akshay , Kulkarni V V , Patil N K 
Published: March 2021

Abstract
This is investigation of the fatigue behaviour of carbon fiber reinforced polymer laminates under various angles of deflections of cantilever beam in bidirectional (R=-1) plane bending. The Unidirectional 45˚ carbon fiber oriented CFRP composite were tested at different cantilever bending angles at frequency of 8 Hz. The non- destructive modal testing is conducted to evaluate reduction in structural stiffness in fully reversed plane bending in terms of natural frequency. The modal test at specific intervals is conducted by interrupting the fatigue test. The curve fitting technique for prediction of fatigue life over experimental analysis is used to formulate behaviour of CFRP in plane bending fatigue. It is shown that A Non-destructive Testing method (Modal Test) can be applied for the fatigue life estimation of CFRP laminates. The natural frequency reduction model is able to represent the overall reduction in stiffness due to fully reversed plane bending fatigue.
On modelling and adaptive control of a linear smart beam model interacting with fluid
Authors: Al-Shuka Hayder F N , Kadhim Kareem Jawad , Al-hamadani AbdnoorJameel Shaheed 
Published: March 2021

Abstract
This paper deals with modelling and control of Euler-Bernoulli smart beam interacting with a fluid medium. Several distributed piezo-patches (actuators and/or sensors) are bonded on the surface of the target beam. To model the vibrating beam properly, the effect of the piezo-patches and the hydrodynamic loads should be taken into account carefully. The partial differential equation PDE for the target oscillating beam is derived considering the piezo-actuators as input controls. Fluid forces are decomposed into two components: 1) hydrodynamic forces due to the beam oscillations, and 2) external (disturbance) hydrodynamic loads independent of beam motion. Then the PDE is discretized using the Galerkin approach to obtain standard multi-modal equations. An adaptive approximation control structure is proposed to suppress the beam vibration. The controller consists of a proportional-derivative PD control plus an adaptive approximation compensator AAC with guaranteed stability. A simply supported beam with 2 piezo-patches interacting with fluid is simulated. The disturbance hydrodynamic force that excites the beam vibration is assumed as a harmonic force with 50 Hz frequency and 1 N amplitude. The results prove the efficacy of the proposed control architecture.
Device customization with novel adhesive electrode
Authors: Sameer Karpe Dr. , Kashinath Sahoo Dr. , Varadharajulu Dr. G. , Suraj Kanase Dr. 
Published: March 2021

Abstract
The present research deal with the physical examination and analysis of an instrument that is ankle foot orthotic device. The physics of this device consist of calf piece; calf strap; a muscle stimulator; stimulator suspension including a press button with nylon strap; two adhesive electrodes; electrical wires; hinge joint; JBR outsole; foot piece; ankle strap; forefoot strap; rings; adjustable strap; press button; cold and hot pack pouch; a means to provide upward projection; & shank. The customized AFO device is characteristic in the sense that the adhesive strap being mounted on the rings so as to keep the plantar section of the foot piece in straight position and wherein the adhesive strap being made up by a combination of polyvinyl chloride, polypropylene and polyethylene wherein polyvinyl chloride, polypropylene and polyethylene is 1:1:2 by weight; wherein the cold and hot pack pouch being made up of 40.5 wt% water; 40.5 wt% ammonium nitrate, 4 wt% hydropropylmethyl cellulose and 15 wt% propylene glycol; and wherein the said electrode being made up of a hydrogel comprises of acrylic acid and N-vinylpyrrolidone. The overall result feedback is a feeling of increased muscle control, flexibility, and range of motion on using the device.
Application of rubber pad electrodes and vacuum suction cups neuromuscular electrical stimulation
Authors: Nikam Dr. Prasannajeet P. , Varadharajulu Dr. G. , Kashinath Sahoo Dr. 
Published: March 2021

Abstract
The present paper describes a wearable orthopaedic treatment unit. The wearable product requires a service member that is tailored to wear across the user’s body. The support person shall have a bracelet and a lumbar belt to ensure fitting over the user’s body. In addition, the support member is fitted with rubber pad electrodes and vacuum suction cups Neuromuscular electrical stimulation is provided by rubber pad electrodes which promote passive contraction and muscle relaxation. The system is particularly suited for the treatment of lower back pain. It also enables the absorption of waste materials such as lactic acid and thereby helps to enhance the functional properties of muscles such as flexibility, contraction, etc.
Study of green advertisements in indian automobile sector for environmental sustainability
Authors: Vatsa Madhuranjan , Singh Satendar , Chaudhary Sarita 
Published: March 2021

Abstract
Worsening state of environment is a major concern for the world today. One major sector which is supposed to be the most notorious in degrading environment is the transportation sector. It is therefore important for the transportation sector to think of ways to reduce its carbon footprint. One of the popular way is the adoption of green marketing which incorporates all the elements namely product, price, place and promotion. It means that that the objective of the transportation sector should not just to develop the environmental friendly products but they should give the environment friendly identity too. The present paper has attempted to understand the green initiatives taken by the car manufacturing firms. For this purpose we have studied the advertisements shown on the television. The advertisements shown in the Television during 2012-2016 have been collected. Cues have been developed to interpret the advertisements with the help of previously conducted studies. Some of the cases have been discussed in the present paper too. The results indicate that the car making firms are still hesitating to establish the identity of cars as environment friendly.
Investigation of a highly sensitive vortex beam-shined optical sensor for the detection of glucose concentration in urine
Authors: Datta Arijit , Chaturvedi Mukta 
Published: March 2021

Abstract
The present work investigates the notion of a highly sensitive optical sensor for the detection of urinary glucose concentration by shining an optical Vortex Beam. The proposed sensing scheme relies on the theory of multimode interference where the transmitted output power varies due to the change in the refractive index of cladding as formed by various concentrations of glucose in urine. With a significant amount of energy at the beam’s periphery, Vortex beam can energize a massive number of higher order modes inside the sensing system. In support of theoretical analysis, an Eigenmode expansion solver is employed in Lumerical Mode solution software to visualize the full transmission spectrum of the sensor. In contrast to the conventional sensor, the proposed sensor proffers a 3.65 times superior sensitivity of around 1.116 dB/gm/dL over the glucose concentration range from 0-10 gm/dL. The presence of minimum 0.008 gm/dL glucose level in urine could be detected using the proposed technique; whereas the traditional Gaussian-beam based technology could detect the presence of around 0.032 gm/dL of the same. Due to the high sensing performance, the present paradigm can be a useful tool for monitoring the elevated glucose levels which is responsible for triggering Diabetes Mellitus.
Modified Fluorescent PEG-Based Carrier System for In-vitro Imaging
Authors: Thomas Aswathi , Aravind Kumar Rengan Dr. 
Published: March 2021

Abstract
A facile, one-pot synthesis of polymer based fluorescent coating agent was developed. Polyethylene glycol (PEG), known to be biocompatible and biodegradable, has been modified with ascorbic acid (AA) to yield modified fluorescent PEG based carrier system (PEGAA). The fluorescence obtained was tuned using varying concentrations of ascorbic acid. With increasing concentration of ascorbic acid, a red shift in fluorescence was observed which could be utilized for effective in vitro imaging. The cellular uptake studies reveal the potential use of this novel material for bioimaging applications.
Investigation of Performance Parameters Affecting the Efficiency of Solar Water Heater: A Review
Authors: Mane Swapnil R. , Kale Dr. Rajesh V. 
Published: March 2021

Abstract
The need for installation of Solar Water heater is increasing in society because of several factors such as rapid urbanization, government interventions, low cost of installations, and environment-friendly application acting as a direct replacement to fossil fuels. During the past few years, the research and development associated with the technological enhancement of the utilization of solar energy have increased exponentially. However, there are various challenges involved in the selection of proper solar technology to provide a high-performance energy harvesting application for domestic water heating requirements. There is a wide literature available on various performance parameters required to develop an efficient Solar Water Heating System. This paper investigates a state-of-the-art review of the performance parameters affecting the efficiency of Solar Water Heaters by component-wise analysis of parameters divided broadly into the design, operational and external parameters. The technological advancements in solar water heaters are classified based on performance parameters and the paper summarizes the possibility of combining different performance parameters to achieve more efficient and cost-effective solar water heaters for the society as future scope of the review for researchers working in the similar domain.
Characterization of CRYO AND RT ECAPed Aluminium 6063 Followed by Aging Using CHARPY IMPACT TEST
Authors: Arnuri Srinivasulu , Gurugubelli Swami Naidu 
Published: March 2021

AbstractEqual Channel Angular Pressing (ECAP) is one of the severe plastic deformation techniques that have attracted much attention from the material community in present days. This technique has ability to produce ultra fine-grained microstructures, without a significant change in geometry. Present work describes the effect of CRYO treatment on impact strength of post ECAP aging for aluminium 6063 alloy studied using Charpy impact test. For conducting ECAP process, a channel having angle of 1080is used. For ECAP purpose, samples having dimensions of 9.5mm X 9.5mm X 100mm chosen and they were given, solution treatment at 5200C for 120 minutes. These solution treated samples divided into two groups. One set of samples were given by CRYO treatment by dipping in liquid nitrogen for 20 minutes and ECAP processes carried out and obtained CRYO ECAP samples. Another set of solution treated samples subjected directly to ECAP operation and obtained RT ECAP samples. These two sets of samples are again, reduced to Micro Vickers and Charpy Impact test dimensions and aged at 1800C for different timings. Micro Vickers hardness tests and Impact tests are conducted on these two sets of samples. The obtained results are correlated with Macro and Micro examinations.
Electrochemical characters of α-Fe2O3 hexagonal platelets synthesized by a facile hydrothermal route
Authors: Hang Bui Thi , Thuan Vu Manh 
Published: March 2021

Abstract
Fe2O3 materials with various morphologies were synthesized from iron (III) chloride (FeCl3.6H2O) by a facile hydrothermal route for Fe-air battery anodes. The crystal structure and morphology of the obtained Fe2O3 powder were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The morphologies, shapes and sizes of Fe2O3 particles synthesized via the hydrothermal method were controllable by the concentration of precursors. The composite electrodes were fabricated by mixing the synthesized Fe2O3 powders with nanocarbon and were then subjected to electrochemical measurements. The results indicated that the shape and size of iron oxide affected the electrochemical properties of Fe2O3/carbon composite electrodes. The concentration of electrode components also significantly influenced the cyclability of Fe2O3/carbon composite electrodes
Calcite mineral characterization and quantification of urease enzyme mediated sand columns
Authors: Srinivasa Reddy V , Hema Latha K , Lahari Ravulaparthi Sudha , Mallikarjuna Reddy V 
Published: March 2021

Abstract
In this paper urease enzyme facilitated calcium carbonate precipitation for soil strength improvement is characterized using X-ray diffraction and the amount of calcium carbonate precipitated is quantified based on acid leaching, thermal decomposition and CO2 volume evaluation approaches. These techniques are adopted to evaluate the spreading of calcium carbonate crystals within the sand matrix after treatment with urease enzyme and nutrients. Sand columns of 60mm diameter and height 60 mm are prepared with the help of PVC pipes. Nutrient solution made up of urea, urease enzyme producing Sporosarcina pasteurii bacterium and calcium supplement in the form of calcium chloride is introduced into the sand columns ensuring the uniform distribution. Later treated samples of sand is examined for calcium carbonate precipitation by Sporosarcina pasteurii bacterium by XRD and quantified.
Behaviour of bacterial concrete subjected to elevated temperatures of various exposure times
Authors: Srinivasa Reddy V , Krishna Polina VVSSSR , Sai Karthik G , Shrihari S 
Published: March 2021

Abstract

In this paper the behaviour of M25 grade bacterial concrete exposed to various elevated temperature and thermal cycles of different durations of exposure. Introducing the bacteria Sporosarcina pasteurii into the concrete will employ the bio-mineralization phenomena to precipitate calcite minerals in the cavity pores and dried gel pores of the concrete improving the internal void structure of the concrete. So the current study will try to understand the integrity of the bacterial concrete when subjected to a different elevated temperatures of 200 ºC, 400 ºC and 600 ºC exposed for 2 hrs. , 4 hrs. and 6 hrs. duration. Compressive strength loss and weight loss is evaluated and internal structure quality is also assessed using non-destructive techniques as first part. Results suggest that till 500 -600 ºC bacteria mixed concrete produces superior results beyond that the behaviour is almost similar to that of normal concrete
Dry and underwater friction stir welding of aa6061 pipes - a comparative study
Authors: Sabry I. , Zaafarani N. 
Published: March 2021

Abstract
This work compared the parameters of friction stir welding (FSW) and under water friction welding (UWFSW) on the weld joint, such as tool rotation speed, transverse speed, and wall thickness, and compare the ultimate tensile strength (UTS) weld joint using the experimental work for FSW and UWFSW was performed using a new modified fixture to eliminate the post-process problems. Experiments were performed at three levels of three parameters: Wall thickness, tool rotational speed and travel speed using milling machine center by UWFSW and traditional FSW. The full factorial approach was introduced for statistical research. UTS i s measured as a reaction, meaning that the ultimate tensile strength achieved by welding the UWFS weld was greater than the conventional FSW weld. As a predictive research tool, regression analysis and variance analysis were used. From the study, it was observed that with minimal tool transverse speed, high tool rotation speed for UWFSW, maximum tensile strength is given, and that of traditional FSW.
Response surface methodology approach for optimization of methylene blue adsorption using activated carbon from rice husk
Authors: Tan Lam Van , Nguyen Hong-Tham T. 
Published: March 2021

Abstract
In this study, an activated carbon (AC) material was derived from rice husk and tested for adsorption efficiency against methylene blue (MB). Response surface methodology (RSM) and central composite design (CCD) were adopted as the optimization techniques. The affordable, non-toxic and easily obtainable rice husk was carbonized and thereafter activated by KOH to produce porous AC, which was then characterized by XRD, FTIR, SEM and BET analyses. In the optimization study, the independent and collaborative effects of three experimental parameters, including dye concentration, pH solution and contact time, were taken into account. The adsorption capacities showed up to follow the direction that was well congruent with the confirmation experiments, which disclosed the robustness and viability of the optimization technique.