535 research outputs found
Waxol and Chitosan Coatings to Extend Tomato Shelf-Life
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
Stoic beliefs and health: Development and preliminary validation of the Pathak-Wieten Stoicism Ideology Scale
No full text© Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted. Introduction We developed and validated a new parsimonious scale to measure stoic beliefs. Key domains of stoicism are imperviousness to strong emotions, indifference to death, taciturnity and self-sufficiency. In the context of illness and disease, a personal ideology of stoicism may create an internal resistance to objective needs, which can lead to negative consequences. Stoicism has been linked to help-seeking delays, inadequate pain treatment, caregiver strain and suicide after economic stress. Methods During 2013-2014, 390 adults aged 18+ years completed a brief anonymous paper questionnaire containing the preliminary 24-item Pathak-Wieten Stoicism Ideology Scale (PW-SIS). Confirmatory factor analysis (CFA) was used to test an a priori multidomain theoretical model. Content validity and response distributions were examined. Sociodemographic predictors of strong endorsement of stoicism were explored with logistic regression. Results The final PW-SIS contains four conceptual domains and 12 items. CFA showed very good model fit: root mean square error of approximation (RMSEA)=0.05 (95% CI 0.04 to 0.07), goodness-of-fit index=0.96 and Tucker-Lewis Index=0.93. Cronbach's alpha was 0.78 and ranged from 0.64 to 0.71 for the subscales. Content validity analysis showed a statistically significant trend, with respondents who reported trying to be a stoic 'all of the time' having the highest PW-SIS scores. Men were over two times as likely as women to fall into the top quartile of responses (OR=2.30, 95% CI 1.44 to 3.68, P<0.001). ORs showing stronger endorsement of stoicism by Hispanics, Blacks and biracial persons were not statistically significant. Discussion The PW-SIS is a valid and theoretically coherent scale which is brief and practical for integration into a wide range of health behaviour and outcomes research studies
Parmanu-Gunak
No full textParmanu-Gunak is a free Python based GUI application for reducing single and double spike isotope dilution data.
Version 1.0
Please contact the author at [email protected] for any questions related to Parmanu-Gunak. If you use Parmanu-Gunak for your data reduction, then please cite the following paper:
Pathak, D. (2023), Parmanu-Gunak: Data Reduction Software for Isotope Dilution Analysis. Geostand Geoanal Res. https://doi.org/10.1111/ggr.12476
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Effect of Copper Slag in Subgrade Soil for Design of Flexible Runway Pavement
No full textMaster of Engineering- InfrastructurePreparation of subgrade for a transportation infrastructure on a problematic soil like clayey
soil has always been a matter of great concern as clay can exhibit geotechnical problems like
high compressibility, high plasticity, high swelling and shrinkage properties etc. To solve
these problems and to improve the quality of soil, various soil stabilisation methods can be
used. In our study, the properties of the clayey soil is improved by mixing the soil with
industrial wastes like copper slag. Use of copper slag is done as it is way more cost effective
and eco friendly options than others. The copper slag was collected from SYNCO industries,
Jodhpur, Rajasthan and it was used to investigate the effect on locally available soil from
Rajpura, Patiala, Punjab. Various proportions of copper slag (10%, 20%, 30%, 40%, 50%,
60% by weight of the parent soil) was used. The strength of the soil was observed by
performing compaction tests, CBR tests etc. The observation of CBR tests explored that the
CBR of the soil increases with increase in percentage of copper soil and hence the mix can be
successfully used as a subgrade for flexible pavement for airport. FAARFEILD computer
program is used to determine the pavement layer thickness
Satellite-retrieved direct radiative forcing of aerosols over North-East India and adjoining areas: climatology and impact assessment
No full textThe article by J. Biswas et al. contained an update in affiliation of author Binita Pathak. The author would like to add another affiliation to her name. Her updated affiliations are the following
Social entrepreneurship, governmentality & the Left
No full textThis paper offers a critique of the location of social entrepreneurship in the imaginaries of an advanced liberal social economy . Social entrepreneurship is used in a broad sense to refer to innovative, sustainable solutions to social problems, and this paper is agnostic towards organisational structures or the use of earned income which might be understood to circumscribe the practice of social enterprise. This chapter therefore, rejects Reiss’ (1999,1) assertion that social entrepreneurship refers simply to the “application of sound business practices to the operation of non-profit organizations” and is closer to the social innovation school of thought advocated by Dees & Anderson (2006). By doing so, the author asserts the need for nation states to take an active role through policy innovation and the co-ordination of the social economy
Analysing spatial interdependence among the 2011 Thailand flood-affected small and medium enterprises for reduction of disaster recovery time period
No full textThe authors would like to acknowledge the continuous support and
guidance of the colleagues and family members.
The author would like to acknowledge the constant support and guidance
from Anila Pathak, Nupur Chaturvedi, Meleana Chaturvedi and Aaryana
Pathak.
ORCID: 0000-0002-2750-8483 (Shubham Pathak).Natural disasters have been a significant hurdle in the economic growth of middle-income developing countries. Thailand has also been suffering from recurring flood disasters and was most which are severely affected during the 2011 floods. This paper aims to identify the various factors that impact the speed of disaster recovery among the Small and Medium Enterprises (SMEs) severely affected by the floods in Pathumthani province in central Thailand, and how it is related to its speed decision of neighbours SMEs. The methodology adopts a spatial econometric model, to analysis and understand each of the chosen factors' impact. The findings include the impact of disaster resilience, mitigation and planning at the SME level as well as the government level. The absence of accurate perception of actual risk, flood insurance and disaster management planning before the 2011 floods had contributed to the severity of the impacts during the 2011 floods
Investigating the Performance of Geocell Reinforced Unbound Layer Using Light Weight Deflectometer
No full textRapid road infrastructure construction has become a trend in India and around the world. Many road projects have necessitated early-stage maintenance during the last few decades. To figure out what's causing it, a structural evaluation study is needed to analyze the existing material qualities of the pavement. Many studies have evaluated flexible pavements using widely used NDT technologies such as LWD, BBD, and FWD. While LWD is gaining acceptance and popularity as an in-situ spot-testing device all over the world, only a few studies have been done and are necessary to be carried out in India in order to make the use of the LWD technique beneficial in road repair projects. The primary objective of this research is to use LWD to estimate the subbase surface and subgrade modulus of the unreinforced and reinforced sections and to provide rehabilitation options based on the LWD results. The lightweight deflectometer (LWD) is a highly advanced and sophisticated device that was developed to evaluate the deformation modulus (Esub LWD) of compacted geomaterials as an alternative density test.
One of the ground improvement techniques rapidly expanding is geosynthetic soil reinforcement, primarily due to cost-effectiveness, simplicity, and ease of construction. The most recent development in the field of geosynthetics soil reinforcement is the use of geocells at the base and subbase courses of the pavement systems. Geocells improve pavement performance while also attaining sustainable goals, as shown by research, testing, field trails, and case studies. This research aimed to figure out what causes improved bearing capacity and what benefits geocells deliver. Geocell was used in this study in a variety of layouts and sizes with gradation (Grade I as per MoRTH for both Laboratory and Field Evaluations. It was also discovered that the best performance is achieved when a geocell of height 125 mm layer is installed in the unbound layer.
The performance improvement was presented in terms of Modulus Improvement Factor (MIF). This study intends to use the LWD device and present the ranges of deformation modulus for various geomaterials from several studies. For instance, in the case of soils and aggregates, deformation modulus values were found to be in the range of 35-60 MPa and 80-120 MPa, respectively. In addition, several studies have been compiled to completely comprehend the relationship between LWD and various geocell layouts. In addition to the cost savings, this would
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conserve natural materials like aggregates used in pavement construction. Overall, the inclusion of geocell in the subbase layer helps improve the life, uniform distribution of load and provides an economical and sustainable solution to the present practices.
Finite Element Analyses (FEA) were used in the investigation, and the results were confirmed through laboratory tests. The objective is to understand the behavior of unpaved roads with unreinforced and geocell-reinforced subbase. Based on FEA and laboratory evaluation, the study investigated that the geocells are beneficial when construction is performed with a lower/marginal subbase and subgrade material. The geocells allow placement on top of the weak quality subgrade
Effect of the Position of Geotextile on the Strength Characteristics of Subgrade in Bituminous Pavements
No full textMaster of Engineering-Infrastructures EngineeringIn the past 20 years, many new road improvement techniques have revolved around
the use of geosynthetics. In India, most of the flexible pavements are need to be
constructed over weak sub-grade having low modulus values. The California bearing
ratio (CBR) of these sub-grade soils has very low, resulting in more thickness of the
road crust. Replacing of these existing weak subgrade soil may not be good option,
thus it is required to stabilize these weak subgrade soil with suitable stabilizer.
Geosynthetics have been found to be a cost effective alternative to improve the weak
subgrade soils in adverse locations. In this study, firstly the various properties of soil
sample like grain size analysis, liquid limit, plastic limit, plasticity index &
identification of soil has been evaluated and then CBR values of these soils have been
improved using geotextiles. Non-Woven geotextiles are placed at different layers of
various soil samples, and then a series of California Bearing Ratio (CBR) tests were
conducted to evaluate the strength of the subgrade soil. It was observed that the CBR
value increases, when the non-woven geotextile are placed at different layers of
various soil sample. From this study, single layer of non-woven geotextiles is
introduced at the depth of 0.85H from the bottom of the mould shows better
performance than those samples with the geotextiles layer are placed at other depths.
In this study, the flexible pavement have been designed for both fatigue and rutting
life of 100MSA at 90% and 80% reliability, when the non-woven geotextile are
placed at three different depths of subgrade soil samples. The critical strain value for
both fatigue and rutting life are analysed by programme IITPAVE software and are
less than the allowable strain values as computed by IRC: 37-2012
Laboratory Investigation and Field Performance Evaluation for Chemically Stabilized Cement Treated Sub-Bases
No full textIndia is making significant investments in the transportation sector, but in many locations, the
procurement and the processing cost of naturally available materials is exorbitantly
increasing because of rapid depletion of these materials. In this work, soil that is readily
available in the area, cement and nano-chemicals like Terracil and Zycobond are utilised to
assess the impact of nano materials on California bearing ratio and compressive strength of
chemically treated sub-base layer. XRD, SEM tests were carried out to identify the micro
structure of different mixes. The addition of optimum dosage of nanoparticles had a very
advantageous effect on UCS and CBR. The compressive strength of the soil aggregate mix
treated with cement was improved by up to 103.4% by the addition of nano compounds. The
California bearing ratio of the mix treated with optimum dosage of cement and chemical was
increased by 219%. The different laboratory prepared mix were laid on the field
(Intermediate lane, PMGSY road) to study a behaviour of mix. To examine the deflection
and modulus for various mixes laid on the field, a deflectometric investigation employing a
lightweight deflectometer was conducted. LWD was also used to calculate the 28-day
modulus.
SEM, XRD analysis depicted that the nanoparticles promoted the pozzolanic reaction by
transforming portlandite into C-S-H gel. According to the X-ray diffraction patterns,
stabilisation by terrasil and zycobond results in the creation of additional peaks like CSH and
changes the structure of pure soil when gypsum is added. SEM pictures of soil samples
reveal a denser texture as a result of chemical stabilisation and a decline in the Si/Al ratio,
which suggests increased shear strength in stabilised samples according to interpretation of
energy dispersive X-rays (EDS)
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