scholarly journals Laterite as a base and subbase material for flexible pavement – a review

Author(s):  
S. Jayalekshmi ◽  
Lincy Fernandez ◽  
Faustine Anooja ◽  
A. Anjana ◽  
Rahul R. Pai

Rapid economic growth is leading to ubiquitous expansion in highway projects around the world. Utilization of natural aggregate resources for the construction of flexible pavement has led to uncontrollable quarrying in the state of Kerala. The recent landslides in Kerala which took the lives of many people is the aftermath of extensive quarrying activities. Utilization of treated native soil in the structural layers (Subbase and base) of flexible pavement can widely avert the danger associated with ecological imbalance due to quarrying. The main objective of this review article is to enlighten the researchers and practicing engineers about the key advances developed in the last 10 years for utilizing native laterite soil in the base and subbase layers of flexible pavement. On the basis of various researches, laterite soil treated with lime, cement and other additives showed considerable enhancement in the compaction characteristics, unconfined compressive strength (UCS) and California Bearing Ratio (CBR). As stipulated by MORTH (Ministry of Road Transport and Highways), for a layer to be suitable as a subbase material in flexible pavement, minimum CBR value must be 30%. From the extensive review, it was found that the treated laterite soil satisfied the MORTH criteria for use as a subbase layer in flexible pavement. Keywords- Ferrocement, cyclic loading, flexural behavior, precast ferrocement wall, dynamic analysis, static analysis

Coronaviruses ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 49-56
Author(s):  
Gaurav M. Doshi ◽  
Hemen S. Ved ◽  
Ami P. Thakkar

The World Health Organization (WHO) has recently announced the spread of novel coronavirus (nCoV) globally and has declared it a pandemic. The probable source of transmission of the virus, which is from animal to human and human to human contact, has been established. As per the statistics reported by the WHO on 11th April 2020, data has shown that more than sixteen lakh confirmed cases have been identified globally. The reported cases related to nCoV in India have been rising substantially. The review article discusses the characteristics of nCoV in detail with the probability of potentially effective old drugs that may inhibit the virus. The research may further emphasize and draw the attention of the world towards the development of an effective vaccine as well as alternative therapies. Moreover, the article will help to bridge the gap between the new researchers since it’s the current thrust area of research.


2021 ◽  
Vol 25 (1) ◽  
pp. 132-140
Author(s):  
Anthony G. Reddie

Abstract This review article focusses on three new texts in Pastoral theology, each of which, offers an important and interesting turn in the discipline. The three texts – Caring For Souls in a Neo-Liberal Age, by Bruce Rogers-Vaughn1, Race, Religion, and Resilience in the Neo-Liberal Age, by Cedric C. Johnson2 and Care of Souls, Care of Polis by Ryan Lamothe1 – will be reviewed in light of the prevailing themes they share. In what ways are these three authors foregrounding important new dimensions in the study of Pastoral theology and Pastoral care?


Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 833
Author(s):  
Gregory Trencher ◽  
Achmed Edianto

As policymakers and automotive stakeholders around the world seek to accelerate the electrification of road transport with hydrogen, this study focuses on the experiences of Germany, a world leader in fuel cell technology. Specifically, it identifies and compares the drivers and barriers influencing the production and market penetration of privately-owned fuel cell electric passenger vehicles (FCEVs) and fuel cell electric buses (FCEBs) in public transit fleets. Using original data collected via a survey and 17 interviews, we elicited the opinions of experts to examine opportunities and obstacles in Germany from four perspectives: (i) the supply of vehicles (ii) refuelling infrastructure, (iii) demand for vehicles, and (iv) cross-cutting institutional issues. Findings indicate that despite multiple drivers, there are significant challenges hampering the growth of the hydrogen mobility market. Several are more pronounced in the passenger FCEV market. These include the supply and cost of production, the lack of German automakers producing FCEVs, the profitability and availability of refuelling stations, and low demand for vehicles. In light of these findings, we extract implications for international policymakers and future studies. This study provides a timely update on efforts to spur the deployment of hydrogen mobility in Germany and addresses the underrepresentation of studies examining both buses and passenger vehicles in tandem.


2011 ◽  
Vol 44 (4) ◽  
pp. 412-446 ◽  
Author(s):  
Bonny Norton ◽  
Kelleen Toohey

In this review article on identity, language learning, and social change, we argue that contemporary poststructuralist theories of language, identity, and power offer new perspectives on language learning and teaching, and have been of considerable interest in our field. We first review poststructuralist theories of language, subjectivity, and positioning and explain sociocultural theories of language learning. We then discuss constructs ofinvestmentandimagined communities/imagined identities(Norton Peirce 1995; Norton 1997, 2000, 2001), showing how these have been used by diverse identity researchers. Illustrative examples of studies that investigate how identity categories like race, gender, and sexuality interact with language learning are discussed. Common qualitative research methods used in studies of identity and language learning are presented, and we review the research on identity and language teaching in different regions of the world. We examine how digital technologies may be affecting language learners' identities, and how learner resistance impacts language learning. Recent critiques of research on identity and language learning are explored, and we consider directions for research in an era of increasing globalization. We anticipate that the identities and investments of language learners, as well as their teachers, will continue to generate exciting and innovative research in the future.


2012 ◽  
Vol 594-597 ◽  
pp. 1445-1448
Author(s):  
Tao Cheng ◽  
Ke Qin Yan

Mechanics properties of lime- fly ash stabilized soil are investigated. First, the chemical composition of fly ash are analyzed by spectral analysis test. Compaction experiments of all mix proportion projects are carried out in different water conditions to obtain the optimum water contents. Then the optimum mix proportion is obtained by the unconfined compressive strength and the compression rebound modulus test. Finally, the pavement structures design for a highway of lime- fly ash stabilized soil road sub-base is done. By the comparison, a conclusion can be drawn that lime-fly ash stabilized soil is suitable for flexible pavement or semi-rigid pavement because of its good strength and rigidity which can effectively reduce thickness of the lower pavement and basic deflection.


Author(s):  
Dr. Sandip Tawade

Ayurveda is not only an ancient medical science but it is a complete life science.The main aim of Ayurveda is to maintain the health of a healthy person & to cure the disease of diseased person. From last few decades due to globalisation there is drastic change in working pattern, dietary habits & lifestyle. According to a new research, lifestyle diseases replaced traditional health risk factors resulting in an increase in incidents of diseases & deaths in India in the last two decades. Now most of the diseases & deaths are caused by High Blood Pressure, high cholesterol, obesity, alcohol use and poor diet. Unhealthy lifestyle is the root cause of many diseases broadly termed as lifestyle disorder. Hypertension is the most common lifestyle disease affecting population all over the world. About 26.4% of the world adult population in 2020 had hypertension and 29.2% were projected to have this condition by 2025. India is labeled as global capital of hypertension. The Ayurveda concentrates on achieving the promotion of health, prevention and management of disease for a healthy and happy life in the ailing society. The principals of Ayurveda are focused on maintaining good health by good diet and good lifestyle. Proper dietary habits, proper exercise, Yoga, Meditation along with Ayurveda herbs can be beneficial to balancing of mind, which reduce stress and maintain the blood pressure. The present review article is aimed that the planning of proper herbal medications as per Ayurveda guidelines will definitely control the high blood pressure without any hazardous side effects of drugs.


2021 ◽  
Vol 15 (3) ◽  
pp. 83-86
Author(s):  
Sabina Əzim qızı Əzimova ◽  

One of the most common forms of child exploitation in the world is early marriage. Although the number of underage marriages has declined to some extent, it continues to rise in a number of countries. Early marriage usually means the marriage of a child under the age of 18. Many of these marriages are also referred to as "child and forced marriages" because they are performed without conscious consent. Early marriage separates children from their families and peers, exposes them to domestic violence, and jeopardizes their development, educational, social and professional opportunities. Such marriages can also lead to psychological problems such as depression, adaptation disorders, post-traumatic stress, and suicide attempts. This review article aims to assess the causes and psychosocial consequences of early marriage. Key words: Family age, child exploitation, psychosocial aspects


2013 ◽  
Vol 88 (5) ◽  
pp. 764-774 ◽  
Author(s):  
Maria Fernanda Reis Gavazzoni Dias ◽  
Maria Victoria Pinto Quaresma-Santos ◽  
Fred Bernardes-Filho ◽  
Adriana Gutstein da Fonseca Amorim ◽  
Regina Casz Schechtman ◽  
...  

Superficial fungal infections of the hair, skin and nails are a major cause of morbidity in the world. Choosing the right treatment is not always simple because of the possibility of drug interactions and side effects. The first part of the article discusses the main treatments for superficial mycoses - keratophytoses, dermatophytosis, candidiasis, with a practical approach to the most commonly-used topical and systemic drugs , referring also to their dosage and duration of use. Promising new, antifungal therapeutic alternatives are also highlighted, as well as available options on the Brazilian and world markets.


2021 ◽  
Vol 9 (9) ◽  
pp. 2209-2212
Author(s):  
Mahesh Kumar ◽  
Priyanka 2 ◽  
S. S. Gupta

Ayurveda is one of the most ancient medical science in the world. Ayurveda is known as the science of life. It is not only medical science, but it is also a way of life. In Ayurvedic literature many Aacharyas (Sage) like Atreya Punarvashu,Dhanvantari,Sushruta,Charaka,Vagbhata and other commentators of samhitas (Ancient iterature) have made, its importance the knowledge of Sharir (body) to have undoubtedly for the sake of knowledge. In Ayurveda, Rachana sharir is a very important part of this science to make a person a good physician or a good surgeon. In Rachana Sharir, Marma sharir is very important topic. By knowing this, a person may become a good physician or surgeon. Marma sharir and its practical application are very important during surgery and to understand the injury at marma site, their prognosis and possible prevention is necessary. Inside the body, there is a specific anatomical location which is called a vital point. Keywords: Mamsa (muscle), marma (vital part), jivsthan (life site), Parinam (result), pariman (dimension)


Author(s):  
Faisal Suliman Algaows ◽  
Nader Marzouq AlOtaibi ◽  
Salma Mousa Hakami ◽  
Omar Abdrabalrasoul Alkhabaz ◽  
Bandar Owaidh ALJohani ◽  
...  

Neck pain is a prevalent ailment that affects many people around the world. Neck pain is linked to a high level of disability and is usually regarded as a serious public health issue. Pain between the superior nuchal line and the spinous process of the first thoracic vertebra is referred to as neck pain. The pain in the neck might refer to the head, trunk, and upper limbs in some cases. This article seeks to offer a summary of the existing evidence on the prevalence, costs, diagnosis, prognosis, risk factors, prevention, and management of neck pain patients.


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