Cost Effective Design of Sustainable Concrete Using Marble Waste as Coarse Aggregate

In the present study attempts have been made to obtain sustainable and cost effective concrete product by use of marble waste. Aggregate obtained from marble quarry waste was used as 75% part of coarse aggregate and rest was conventional coarse aggregate. It was observed that, compressive strength was almost same as that of the control concrete. Durability properties like permeability and chloride ion penetration improved by approximately 30% and 15%, respectively. Resistance to acids and carbonation were least affected. Cost comparison showed with 24% less cement requirement, 14% reduction in cost of concrete was achieved when marble waste was used with packing density approach for design of concrete mixes. By minimizing the cement content without losing mechanical and durability properties of concrete resulting in reduction of global cement production from 4.2 billion tons to 1.01 billion tons and correspondingly it reduces CO2 emission from 3.95 billion tons by 3.02 billion tons

Packing Density Approach for Sustainable Development of Concrete

This paper deals with the details of optimized mix design for normal strength concrete using particle packing density method. Also the concrete mixes were designed as per BIS: 10262-2009. Different water-cement ratios were used and kept same in both design methods. An attempt has been made to obtain sustainable and cost effective concrete product by use of particle packing density method. The parameters such as workability, compressive strength, cost analysis and carbon di oxide emission were discussed. The results of the study showed that, the compressive strength of the concrete produced by packing density method are closer to that of design compressive strength of BIS code method. By adopting the packing density method for design of concrete mixes, resulted in 11% cost saving with 12% reduction in carbon di oxide emission

Aortic arch tortuosity with PHACE syndrome : a rare case scenario

PHACE syndrome is a rare neurocutaneous disorder characterised by an association of infantile haemangiomas with structural anomalies of brain, cerebral vasculature, eye, aorta and chest wall.1 Coarctation of aorta (COA) is most the common cardiac anomaly reported in PHACE syndrome. COA or interrupted aortic arch in PHACE is unique and complex both in location and character compared to the typical coarctation anatomy. Arterial tortuosity of the cerebral vasculature has been well described in literature in PHACE syndrome. We present a rare case of tortuous aortic arch continuing as descending aorta in an infant with PHACE syndrome.peer-reviewe

Review on etiopathogenesis and role of lifestyle modification in the management of Khalitya (hairfall)

Now a days, the world is full of glamour and glory. The concept of beauty is gaining more and more attention globally, which is defined on some factors, amongst them hair is an important one. Hair is a mirror of healthy or unhealthy state of the body. Ayurvedic approach, falling of hair is coined as Khalitya. In Ayurvedic texts management of Khalitya has been described in the form of Nasya, Shiroabhyanga, Shirolepa and Rasayana therapy. The main aim of this paper is to explain the Nidana of Khalitya in present era and treat the disease too

Plastic surgery lockdown learning during coronavirus disease 2019: are adaptations in education here to stay?

The novel coronavirus disease 2019 has had a major impact on human life and livelihood. The unprecedented challenges have expanded beyond just social and work life, and have grown to impact resident education. In this article, we review the structure of plastic surgery education before the pandemic, the different online learning opportunities for self-directed learning. A summary of the range of platforms and approaches of online remote access delivery of conferences and education that emerged or expanded as a result of the crisis has been reported. This article highlighted the rapid initiatives and efforts of programs and national and international societies to support continuing medical education in conjunction with the guidelines to “shelter at home” and maintain social distancing, and possible future for expanding the reach of online academic initiatives, in addition to the role of developing virtual technologies. The coronavirus disease 2019 crisis has created an opportunity to analyze and advance online learning options to overcome the associated challenges and continue as a reliable platform even following the resolution of the social distancing requirements

The Prospects for Hybrid Electric Vehicles, 2005-2020: Results of a Delphi Study

The introduction of Toyota's hybrid electric vehicle (HEV), the Prius, in Japan has generated considerable interest in HEV technology among US automotive experts. In a follow-up survey to Argonne National Laboratory's two-stage Delphi Study on electric and hybrid electric vehicles (EVs and HEVs) during 1994-1996, Argonne researchers gathered the latest opinions of automotive experts on the future ''top-selling'' HEV attributes and costs. The experts predicted that HEVs would have a spark-ignition gasoline engine as a power plant in 2005 and a fuel cell power plant by 2020. The projected 2020 fuel shares were about equal for gasoline and hydrogen, with methanol a distant third. In 2020, HEVs are predicted to have series-drive, moderate battery-alone range and cost significantly more than conventional vehicles (CVs). The HEV is projected to cost 66% more than a $20,000 CV initially and 33% more by 2020. Survey respondents view batteries as the component that contributes the most to the HEV cost increment. The mean projection for battery-alone range is 49 km in 2005, 70 km in 2010, and 92 km in 2020. Responding to a question relating to their personal vision of the most desirable HEV and its likely characteristics when introduced in the US market in the next decade, the experts predicted their ''vision'' HEV to have attributes very similar to those of the ''top-selling'' HEV. However, the ''vision'' HEV would cost significantly less. The experts projected attributes of three leading batteries for HEVs and projected acceleration times on battery power alone. The resulting battery packs are evaluated, and their initial and replacement costs are analyzed. These and several other opinions are summarized

q-Sumudu transforms pertaining to the product of family of q-polynomials and generalized basic hypergeometric functions

The prime objective of commenced article is to determine q-Sumudu transforms of a product of unified family of q-polynomials with basic (or q-) analog of Fox’s H-function and q-analog of I-functions. Specialized cases of the leading outcome are further evaluated as q-Sumudu transform of general class of q-polynomials and q-Sumudu transforms of the basic analogs of Fox’s H-function and I-functions

Excerpts of Daivavyapashraya Chikitsa in unpublished manuscript Kashyapa Samhita - A New Outlook

The concept of Daivavyapashraya Chikitsa (a modality of treatment based on past deeds and pleasing of god) has been given least importance in the available Ayurvedic classics. Here is the study of a manuscript named Kashyapa Samhita which is quite different from deemed Kashyapa Samhita that is known off. The study was carried out by deciphering and critically editing six manuscripts collected from IPGT & RA (with accession no. 6512 and 10779), Tanjore Sarasvati Mahal Library (with accession no. 11045), Sampurnananda Library, Varanasi (with accession no. 1088604) and Oriental Research Institute, Mysore (with accession no. A129), MS University Baroda Library (with accession no. 13474B). This manuscript brings out ample references regarding Daivavyapashraya Chikitsa for different diseases caused due to sinful acts

Adsorption Behaviour of Diisopropyl Flourophosphate on Whetlerite Carbon

Breakthrough behaviour of diisopropyl florophosphate (DFP) vapour on whetlerite carbon has been studied by using modified wheeler equation. The kinetic saturation capacity and pseudo first order rate constant with respect to the effect of various parameters such as bed weight, flow rate, concentration and temperature were correlated. The results of this study indicate that breakthrough time is increased with increase of the bed weight of carbon. Rate constant value increases as flow rate increases, while kinetic saturation capacity value is invariable.Defence Science Journal, 2013, 63(5), pp.473-477, DOI:http://dx.doi.org/10.14429/dsj.63.251