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Mechanical properties of concrete containing recycled materials
Solanki, Pranshoo,Dash, Bharat Techno-Press 2016 Advances in concrete construction Vol.4 No.3
The objective of this study was to evaluate the influence of recycled materials, namely, shredded scrap tire (SST), reclaimed asphalt pavement (RAP) and class C fly ash (CFA) on compressive and tensile strength of concrete. Either SST or RAP was used as an aggregate replacement and class C fly ash (CFA) as Portland cement replacement for making concrete. A total of two types of SST and RAP, namely, chips and screenings were used for replacing coarse and fine aggregates, respectively. A total of 26 concrete mixes containing different replacement level of SST or RAP and CFA were designed. Using the mix designs, cylindrical specimens of concrete were prepared, cured in water tank, and tested for unconfined compressive strength (UCS) and indirect tensile strength (IDT) after 28 days. Experimental results showed aggregate substitution with SST decreased both UCS and IDT of concrete. On the contrary, replacement of aggregate with RAP improved UCS values. Specimens containing RAP chips resulted in concrete with higher IDT values as compared to corresponding specimens containing RAP screenings. Addition of 40% CFA was found to improve UCS values and degrade IDT values of SST containing specimens. Statistical analysis showed that IDT of SST and RAP can be estimated as approximately 13% and 12% of UCS, respectively.
Sectoral Contribution to Economic Development in India: A Time-Series Co-Integration Analysis
SOLANKI, Sandip,INUMULA, Krishna Murthy,CHITNIS, Asmita Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.9
This research paper examines the causal relationship between India's economic growth and sectoral contribution to Gross Domestic Product (GDP) and vice versa, in the short-run and long-run, over a 10 years time period. Johansen's method of cointegration is used to study the cointegration between the sectoral contributions to Indian GDP vis-à-vis India's economic growth. Further, the route of interconnection between economic growth and sectoral contribution is tested by using Vector Auto Regression (VAR) model. Special attention was given for investigating impulse responses of economic growth depending on the innovations in sectoral contribution using time-series data from 1960 to 2015. This paper highlighted a dynamic co-relationship among industrial sector contribution and agricultural sector contribution and economic development. In the long run, one percent change in industrial sector contribution causes an increase of 3.42 percent in the economic growth and an increase of 1.12 percent in the primary sector contribution, while in the short run industrial and service sector contributions showed significant impact on economic development and agriculture sector. The changing composition of sector contribution is going to be an important activity for the policymakers to monitor and control where the technology and integration of sectors play a significant role in economic development.
Oral Health of Stone Mine Workers of Jodhpur City, Rajasthan, India
Solanki, Jitender,Gupta, Sarika,Chand, Sachin Occupational Safety and Health Research Institute 2014 Safety and health at work Vol.5 No.3
Background: Occupational injuries cause major health problems, which the developed, developing, and underdeveloped nations worldwide are facing today. The present study aimed to assess dental caries, periodontal health of stone mine workers, and the relationship between wasting diseases and the years of working experience. Methods: The study population comprised 510 men, selected based on the stratified cluster sampling procedure. Clinical oral examinations were carried out, and periodontal disease, dental caries, and wasting diseases were recorded. Results: Workers were in the age group of 17-56 years; the prevalence of dental caries in the workers was found to be 74%, with a mean decayed, missing, filled teeth index of 2.89. A periodontal pocket of more than 6 mm was observed in 6% of the workers. Conclusion: The oral health of mine workers is in a poor state; steps should be taken so as to provide basic medical and dental care facilities.
Solanki Naveen,Arora Akhilesh,Singh Raj Kumar 대한설비공학회 2023 International Journal of Air-Conditioning and Refr Vol.31 No.1
The primary focus of this study is on the energy, exergy, and environmental (3E) analysis of a dedicated mechanical subcooled vapor compression refrigeration (DMS-VCR) system for applications involving commercially available water chillers that employ R134a (in both subcooler and main cycle). For a cooling capacity of 100-kW water chillers, the mathematical model of the DMS-VCR system is built to determine the performance parameter of the system. The DMS-VCR system reduces electricity usage by 15.52% and increase in COP by 9.5%, which results in a significant reduction in CO 2 emissions of about 15.55%. When compared to equivalent vapor compression refrigeration system (VCRS), the system’s exergetic efficiency is also increased by 8%. Since the computer simulation results will undoubtedly give design engineers a better option, the subcooling and superheating of the vapor compression refrigeration system become alluring in this study. Consequently, the DMS-VCR system performs better as per the combined 3E study. The primary focus of this study is on the energy, exergy, and environmental (3E) analysis of a dedicated mechanical subcooled vapor compression refrigeration (DMS-VCR) system for applications involving commercially available water chillers that employ R134a (in both subcooler and main cycle). For a cooling capacity of 100-kW water chillers, the mathematical model of the DMS-VCR system is built to determine the performance parameter of the system. The DMS-VCR system reduces electricity usage by 15.52% and increase in COP by 9.5%, which results in a significant reduction in CO2 emissions of about 15.55%. When compared to equivalent vapor compression refrigeration system (VCRS), the system’s exergetic efficiency is also increased by 8%. Since the computer simulation results will undoubtedly give design engineers a better option, the subcooling and superheating of the vapor compression refrigeration system become alluring in this study. Consequently, the DMS-VCR system performs better as per the combined 3E study.
Solanki, S. K.,Riethmü,ller, T. L.,Barthol, P.,Danilovic, S.,Deutsch, W.,Doerr, H.-P.,Feller, A.,Gandorfer, A.,Germerott, D.,Gizon, L.,Grauf, B.,Heerlein, K.,Hirzberger, J.,Kolleck, M.,Lagg, A.,Me American Astronomical Society 2017 The Astrophysical journal, Supplement series Vol.229 No.1
<P>The SUNRISE balloon-borne solar observatory, consisting of a 1 m aperture telescope that provides a stabilized image to a UV filter imager and an imaging vector polarimeter, carried out its second science flight in 2013 June. It provided observations of parts of active regions at high spatial resolution, including the first high-resolution images in the Mg II. k line. The obtained data are of very high quality, with the best UV images reaching the diffraction limit of the telescope at 3000 angstrom after Multi-Frame Blind Deconvolution reconstruction accounting for phasediversity information. Here a brief update is given of the instruments and the data reduction techniques, which includes an inversion of the polarimetric data. Mainly those aspects that evolved compared with the first flight are described. A tabular overview of the observations is given. In addition, an example time series of a part of the emerging active region NOAA AR. 11768 observed relatively close to disk center is described and discussed in some detail. The observations cover the pores in the trailing polarity of the active region, as well as the polarity inversion line where flux emergence was ongoing and a small flare-like brightening occurred in the course of the time series. The pores are found to contain magnetic field strengths ranging up to 2500 G, and while large pores are clearly darker and cooler than the quiet Sun in all layers of the photosphere, the temperature and brightness of small pores approach or even exceed those of the quiet Sun in the upper photosphere.</P>
SUNRISE: INSTRUMENT, MISSION, DATA, AND FIRST RESULTS
Solanki, S. K.,Barthol, P.,Danilovic, S.,Feller, A.,Gandorfer, A.,Hirzberger, J.,Riethmü,ller, T. L.,Schü,ssler, M.,Bonet, J. A.,Pillet, V. Martí,nez,del Toro Iniesta, J. C.,Domingo, V. IOP Publishing 2010 ASTROPHYSICAL JOURNAL LETTERS - Vol.723 No.2
Oral Health of Stone Mine Workers of Jodhpur City, Rajasthan, India
Jitender Solanki,Sarika Gupta,Sachin Chand 한국산업안전보건공단 산업안전보건연구원 2014 Safety and health at work Vol.5 No.3
Background: Occupational injuries cause major health problems, which the developed, developing, andunderdeveloped nations worldwide are facing today. The present study aimed to assess dental caries,periodontal health of stone mine workers, and the relationship between wasting diseases and the yearsof working experience. Methods: The study population comprised 510 men, selected based on the stratified cluster samplingprocedure. Clinical oral examinations were carried out, and periodontal disease, dental caries, andwasting diseases were recorded. Results: Workers were in the age group of 17e56 years; the prevalence of dental caries in the workerswas found to be 74%, with a mean decayed, missing, filled teeth index of 2.89. A periodontal pocket ofmore than 6 mm was observed in 6% of the workers. Conclusion: The oral health of mine workers is in a poor state; steps should be taken so as to providebasic medical and dental care facilities.