River response to Quaternary climatic fluctuations: evidence from the Son and Belan valleys, north-central India

Clay mineral assemblages of a soil chrono-association comprising five fluvial surface members (QGH1 to QGH5) of the Indo-Gangetic Plains between the Ramganga and Rapti rivers, north-central India, demonstrate that pedogenic interstratified smectite–kaolin (Sm/K) can be considered as a potential indicator for paleoclimatic changes during the Holocene from arid to humid climates. On the basis of available radiocarbon dates, thermoluminescence dates, and historical evidence, tentative ages assigned to QGH1 to QGH5 are <500 yr B.P., >500 yr B.P., >2500 yr B.P., 8000 TL yr B.P., and 13,500 TL yr B.P., respectively. During pedogenesis two major regional climatic cycles are recorded: relatively arid climates between 10,000–6500 yr B.P. and 3800–? yr B.P. were punctuated by a warm and humid climate. Biotite weathered to trioctahedral vermiculite and smectite in the soils during arid conditions, and smectite was unstable and transformed to Sm/K during the warm and humid climatic phase (7400–4150 cal yr B.P.). When the humid climate terminated, vermiculite, smectite, and Sm/K were preserved to the present day. The study suggests that during the development of soils in the Holocene in alluvium of the Indo-Gangetic Plains, climatic fluctuations appear to be more important than realized hitherto. The soils older than 2500 yr B.P. are relict paleosols, but they are polygenetic because of their subsequent alterations.

Download Full-text

The Palaeolithic of the Middle Son valley, north-central India: Changes in hominin lithic technology and behaviour during the Upper Pleistocene

Journal of Anthropological Archaeology ◽

10.1016/j.jaa.2009.05.003 ◽

2009 ◽

Vol 28 (3) ◽

pp. 323-341 ◽

Cited By ~ 21

Author(s):

Sacha C. Jones ◽

J.N. Pal

Keyword(s):

Lithic Technology ◽

Central India ◽

North Central ◽

Upper Pleistocene

Download Full-text

Risk factor assessment for acne vulgaris in human and implications for public health interventions in north central India: A survey based study

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2017.v10i5.17265 ◽

2017 ◽

Vol 10 (5) ◽

pp. 404 ◽

Cited By ~ 2

Author(s):

Anupam Dikshit ◽

Afifa Qidwai ◽

Manisha Pandey ◽

Shashi Kant Shukla ◽

Rajesh Kumar ◽

...

Keyword(s):

Risk Factors ◽

Field Study ◽

Dietary Habits ◽

Acne Vulgaris ◽

Central India ◽

Dietary Habit ◽

Health Care Planning ◽

Hormonal Change ◽

Cross Sectional ◽

North Central

Background: Acne vulgaris is a very common dermatological problem of adolescence since the time immemorial. However, it is neither life threatening nor is a physical disability, but acne affects social and psychological functioning. Acne vulgaris is multifactorial, apart from basic factor of hormonal change and bacterial outbreak; there are several other factors that may influence the prevalence of acne.Methods: In the present study, populations were assessed for influence of various factors on acne prevalence. This cross-sectional study was a population based field study intending to discern the factors that influence the prevalence of acne in adolescents. The study carried out from April 2016 to October 2016 in north central India. For this survey, questionnaires were design to cover all the required information regarding occurrence of acne that include factors like gender, age, skin type, complexion, season of occurrence, dietary habit etc.Results: Acne vulgaris appears to be influenced by gender, age, seasonal variations, breakout area, complexion, skin types and dietary habits. Further, the influence of dietary habit on acne, by the consumption of dairy products or high-carbon diet has also been evaluated. Apart from depicting the vulnerable range of age (p=0.003288), sensitivity on various skin types (p=0.00039) and complexion (p=0.001355) on the basis of gender; This Field study on Acne Vulgaris, also reveals that the season has inordinate role in acne pervasiveness (p=0.115731).Conclusion: This study is helpful in categorizing the risk factors and evidencing the afflictions of acne in population thus, contributing health care planning. Keywords: Acne, Prevalence, Risk factors, Post management.

Download Full-text