Urologic manifestations of inflammatory pseudotumor: Report of 2 cases and review of the literature.

We report two adult patients with varied urologic symptoms who were found to have inflammatory pseudotumor on histopathology. The first patient had a large, solid, enhancing retroperitoneal mass lesion and presented with increased frequency of urination and recurrent urinary tract infections. The second patient had an obstructing left distal ureteric stricture and presented with painless hematuria. Though preoperative radiological diagnosis of this entity is not feasible, the present article illustrates the imaging findings in this unusual disease entity with review of the relevant literature

Performance of High Volume Fly Ash Concrete in Structural Applications

Application of high volume fly ash concrete is still not advocated by construction fraternity due to lack of standardisation. In India, fly ash as a pozzolanic material can be used in manufacturing of Portland Pozzolana cement and composite cement with a maximum limit of 35%. Present study had been carried out at various percentages of fly ash and a detailed mechanical and durability study was conducted. In this paper, concrete mixes were designed at two water binder ratio with 30%, 35%, 40% and 50% fly ash content. Mechanical behaviour of concrete was studied through tests like compressive strength (at age of 1, 3, 7, 28, 56 and 90 days) and flexure strength (at an age of 7, 28 and 90 days). Durability aspect of high volume fly ash concrete mixes were determined through various test like RCPT, non-steady state chloride migration, bulk conductivity, accelerated carbonation etc. and comparison is made with control mixes (i.e. concrete made with OPC). Alkali silica reactivity (ASR) study was also carried out at 30%, 35%, 40% and 50% fly ash content using reactive aggregates. It was quite evident from test results that strength characteristics of high volume flyash concrete mix made with 50% flyash content was remarkably lower than that of all other concrete mixtures. High volume flyash concrete mix designed at 40% flyash content had shown exemplarily performance in comparison to other high volume flyash concrete mixes as well as control mixes. Flyash content was found to most significant parameter influencing rate of carbonation

Factors influencing the adoption postponement of mobile payment services in the hospitality sector during a pandemic

publishedVersio

MANAGEMENT AND CLASSIFICATION OF CONSTRUCTION AND DEMOLITION WASTE IN INDIA

Construction and Demolition (C&D) waste have a huge potential to replace virgin materials. However, due to lack of management, its utilization has not been optimized. Issues like sharing of responsibilities among various stakeholders and classification of C&D waste are some of bottleneck on part of effective implementation of C&D waste management in India. This paper illustrates quantity and quality of C&D waste generation in India, regulatory framework, policy interventions and R&D work carried out to classify C&D waste aggregate for production of concrete. Experimental studies were carried out using two different sources of recycled concrete aggregates; one batch of aggregates are obtained from Burari Plant located in New Delhi and another batch of aggregates were created in laboratory by crushing concrete cubes of 20- 30MPa. Thereafter, recycled concrete aggregates were classified on basis of their physical properties like specific gravity and water absorption and their performance in concrete have been evaluated in terms of fresh properties like workability, air content, bleed water percentage and mechanical properties like compressive and flexural strength. Study indicates that air content in concrete mixes prepared from recycled coarse aggregate (RCA) is 5-20 % higher than that of corresponding control mix whereas admixture requirement for concrete mixes prepared with RCA was found to be slightly higher in comparison to that of control. Experimental study indicates that compressive strength as well as flexural strength of concrete mixes prepared with recycled concrete aggregate has been reduced drastically in comparison to control mixes without recycled coarse aggregate

Enumeration of Family Fabaceae from Sechu Tuan Nalla Wildlife Sanctuary, Chamba District, Himachal Pradesh (India)

An account of 20 species under 11 genera of the family Fabaceae is presented based upon a thorough study of the collected specimens and field surveys in this paper from Sechu Tuan Nalla Wildlife Sanctuary, Chamba district, Himachal Pradesh. Of these, fourteen taxa are reported first time from the Chamba district of the state. The updated nomenclature of the species, local name if any, a brief description of the plant, flowering and fruiting period, distribution in the study area, habitat and ecology and specimen examined have been provided

A resource-based view of green innovation as a strategic firm resource: Present status and future directions

Green innovation could become a valuable firm resource for establishing competitive advantage while simultaneously contributing towards sustainable development; in other words, green innovation has the potential to address the dilemma between consuming available resources and preserving them for the future. However, there is a dearth of studies systematically examining the present structure and future scope of research on green innovation as a firm resource. Seeking to explain the sustainable development dilemma of green innovations through the theoretical perspective of the resource-based view of the firm, we address this gap with a comprehensive bibliometric analysis of 951 relevant articles. The key contributors to the extant literature are recognised with bibliographic coupling, citation analysis and co-authorship analysis. A co-citation analysis identifies four major thematic areas of research: green supply chain management, green product design, corporate environmental responsibilities and social sustainability. Further, a dynamic co-citation analysis tracks the progression of these thematic areas. Content analysis of the thematic areas provides insights into the status of the research domain. This study also contributes to the extant literature by identifying prestigious articles on green innovation as a firm resource, analysing the co-occurrence of keywords and suggesting future research agendas.publishedVersio

Measuring the W-t-b Interaction at the ILC

The large top quark mass suggests that the top plays a pivotal role in Electroweak symmetry-breaking dynamics and, as a result, may have modified couplings to Electroweak bosons. Hadron colliders can provide measurements of these couplings at the ~10% level, and one of the early expected triumphs of the International Linear Collider is to reduce these uncertainties to the per cent level. In this article, we propose the first direct measurement of the Standard Model W-t-b coupling at the ILC, from measurements of t tbar-like signals below the t tbar production threshold. We estimate that the ILC with 100 fb^{-1} can measure a combination of the coupling and top width to high precision, and when combined with a direct measurement of the top width from the above-threshold scan, results in a model-independent measurement of the W-t-b interaction of the order of ~ 3%

Comparison of Single- and Two-Bubble Class Gas-Liquid Recirculation Models - Application to Pilot-Plant Radioactive Tracer Studies during Methanol Synthesis

Radioactive Gas Tracer Measurements Conducted during Liquid-Phase Methanol Synthesis from Syngas in a Pilot-Scale Slurry Bubble Column at the Alternate Fuels Development Unit (AFDU), La Porte Have Been Compared with Simulations from Two Mechanistic Reactor Models - Single-Bubble Class Model (SBCM) and Two-Bubble Class Model (TBCM). the Model Parameters Are Estimated from an Independent Sub-Model Gas and Liquid Recirculation, and the Long-Time-Averaged Slip Velocity between the Gas and Liquid/slurry in the Column Center Can Be as High as 50-60 Cm/s Depending on the Operating Conditions. Comparison of Experimental Data with Simulation Results from the Two Models Indicates that Accurate Description of Interphase Gas-Liquid Mass Transfer is Crucial to the Reliable Prediction of Tracer Responses. Coupled with a Correct Description of Gas and Liquid Recirculation, the Models Presented Here Provides a Simple and Fundamentally based Methodology for Design and Scale-Up of Bubble Column Reactors. © 2001 Published by Elsevier Science Ltd