scholarly journals Silver Ferns of Bangladesh and the exclusion of reported Aleuritopteris grisea (Blanf.) Panigrahi (Pteridophyta, Pteridaceae)

2014 ◽  
Vol 42 (2) ◽  
pp. 195-206
Author(s):  
CR Fraser Jenkins
Keyword(s):  
Present Author ◽  
Indian Subcontinent ◽  
Low Altitude ◽  
Cheilanthoid Ferns ◽  
Himalayan Species

The three species of Aleuritopteris ("Silver Ferns") present in Bangladesh are discussed, A. bicolor (Roxb.) Fraser-Jenk, A. anceps (Blanf.) Panigrahi and A. subdimorpha (C.B.Clarke & Baker) Fraser-Jenk., correcting some previous erroneous reports. Aleuritopteris grisea (Blanf.) Panigrahi has recently been reported from the Chittagong Hills, S.E. Bangladesh. But that species is well known to be a high Himalayan Sino-Himalayan species of the Tibetan subtype, confined to the main Himalayan ranges and occurring from c. 2900 - 4000 m altitude. The specimen misreported as it from Bangladesh belongs to the low-altitude species, A. anceps (Blanf.) Panigrahi, which occurs from c. 300-750 m altitude and is a S.E. Asian (Malesian) element in the flora of the Indian subcontinent. This species was first knowingly collected in Bangladesh in the same District in 2003 by the present author, but unfortunately Bangladesh was then inadvertently omitted from its range in his monographic summary of Indian subcontinental cheilanthoid ferns. DOI: http://dx.doi.org/10.3329/bjb.v42i2.18020 Bangladesh J. Bot. 42(2): 195-206, 2013 (December)

scholarly journals Panini’s Astadhyayi in the Eyes of Plant Invasion on Indian Subcontinent

2021 ◽  
Vol 4 (4-5) ◽  
pp. 236-242
Author(s):  
Dinkarrao Amrutrao Patil
Keyword(s):  
Plant Species ◽  
Plant Invasion ◽  
Present Author ◽  
Indian Subcontinent ◽  
Exotic Plant ◽  
Great Understanding ◽  
Community Based ◽  
Exotic Plant Species ◽  
Modern Period ◽  
Indian Landmass

Indigenous plantlore is a manifestation in a given community, based on adaptation and wisdom of local people and environment. It develops over times and continues so also. This treasure of traditional knowledge is used to sustain the community and its bioculture. In long past, people of great understanding, christalized their wisdom in some treatises such as the Panini’s Astadhyayi. This treatise is understood and well known for the genesis and development of Sanskrit knowledge. Ancient Sanskrit scripts usually contain information concerning culture and sustenance based on plant world. The present author analysed it in view of plant invasion on Indian landmass in Panini’s time. Total 45 exotic plant species belonging to 44 genera and 29 angiospermic families are divulged from it. These belong to nearly all corners of the Old and New Worlds. Majority of them (28 species) are cultigens and still continue even in modern period in India. Of course, rest of them are wild, naturalised and presently constitute integral part of Indian biodiversity. The importance of such ancient treatises is dilated in this communication.

scholarly journals Measurement of low-altitude CO over the Indian subcontinent by MOPITT

2008 ◽  
Vol 113 (D16) ◽  
Author(s):  
J. Kar ◽  
D. B. A. Jones ◽  
James R. Drummond ◽  
J. L. Attié ◽  
J. Liu ◽  
...  
Keyword(s):  
Indian Subcontinent ◽  
Low Altitude

Solar Flare Energetic Neutral Emission Measurements in the Project Coronas-I

1994 ◽  
Vol 144 ◽  
pp. 635-639
Author(s):  
J. Baláž ◽  
A. V. Dmitriev ◽  
M. A. Kovalevskaya ◽  
K. Kudela ◽  
S. N. Kuznetsov ◽  
...  
Keyword(s):  
Solar Flare ◽  
Energy Range ◽  
Gamma Rays ◽  
Pulse Shape ◽  
Gamma Ray ◽  
Pulse Shape Discrimination ◽  
Shape Discrimination ◽  
Solar Neutron ◽  
Low Altitude

AbstractThe experiment SONG (SOlar Neutron and Gamma rays) for the low altitude satellite CORONAS-I is described. The instrument is capable to provide gamma-ray line and continuum detection in the energy range 0.1 – 100 MeV as well as detection of neutrons with energies above 30 MeV. As a by-product, the electrons in the range 11 – 108 MeV will be measured too. The pulse shape discrimination technique (PSD) is used.

Quantitative parallel EELS spectrum imaging developed as a new tool in AEM

1992 ◽  
Vol 50 (2) ◽  
pp. 1202-1203
Author(s):  
Gianluigi Botton ◽  
Gilles L'espérance
Keyword(s):  
Statistical Analysis ◽  
Spatial Resolution ◽  
Personal Computer ◽  
Systematic Study ◽  
Present Author ◽  
Chemical Elements ◽  
Detection Limits ◽  
Research Groups ◽  
Quantitative Performance ◽  
Spectrum Imaging

As interest for parallel EELS spectrum imaging grows in laboratories equipped with commercial spectrometers, different approaches were used in recent years by a few research groups in the development of the technique of spectrum imaging as reported in the literature. Either by controlling, with a personal computer both the microsope and the spectrometer or using more powerful workstations interfaced to conventional multichannel analysers with commercially available programs to control the microscope and the spectrometer, spectrum images can now be obtained. Work on the limits of the technique, in terms of the quantitative performance was reported, however, by the present author where a systematic study of artifacts detection limits, statistical errors as a function of desired spatial resolution and range of chemical elements to be studied in a map was carried out The aim of the present paper is to show an application of quantitative parallel EELS spectrum imaging where statistical analysis is performed at each pixel and interpretation is carried out using criteria established from the statistical analysis and variations in composition are analyzed with the help of information retreived from t/γ maps so that artifacts are avoided.

The observation of nano-voids in Au thin films

1987 ◽  
Vol 45 ◽  
pp. 366-367
Author(s):  
William Krakow
Keyword(s):  
Thin Films ◽  
Melting Point ◽  
Present Author ◽  
Stacking Faults ◽  
Damage Threshold ◽  
Ionic Species ◽  
Rare Gases ◽  
Chain Defects ◽  
Vacancy Chains ◽  
Au Thin Films

It has long been known that defects such as stacking faults and voids can be quenched from various alloyed metals heated to near their melting point. Today it is common practice to irradiate samples with various ionic species of rare gases which also form voids containing solidified phases of the same atomic species, e.g. ref. 3. Equivalently, electron irradiation has been used to produce damage events, e.g. ref. 4. Generally all of the above mentioned studies have relied on diffraction contrast to observe the defects produced down to a dimension of perhaps 10 to 20Å. Also all these studies have used ions or electrons which exceeded the damage threshold for knockon events. In the case of higher resolution studies the present author has identified vacancy and interstitial type chain defects in ion irradiated Si and was able to identify both di-interstitial and di-vacancy chains running through the foil.

Sati

Crisis ◽  
2005 ◽  
Vol 26 (2) ◽  
pp. 73-77 ◽  
Author(s):  
Dinesh Bhugra
Keyword(s):  
Mental Illness ◽  
Psychiatric Disorders ◽  
Indian Subcontinent ◽  
Cultural Factors ◽  
Role Expectations ◽  
Prevention Strategies ◽  
Social Causation ◽  
Gender Role Expectations ◽  
Good Wife ◽  
And Gender

Abstract. Sati as an act of ritual suicide has been reported from the Indian subcontinent, especially among the Hindus, for several centuries. Although legally proscribed, these acts occur even now in modern India. The principle behind such acts has been put forward as the principle of good wife. There is little evidence to suggest that women who commit this act suffer from a formal mental illness. Cultural factors and gender role expectations play a significant role in the act and its consequences. Using recent examples, this paper illustrates the cultural factors, which may be seen as contributing to the act of suicide. Other factors embedded in the act also emphasize that not all suicides have underlying psychiatric disorders and clinicians must take social causation into account while preparing any prevention strategies.

Suicide on the Indian Subcontinent

Crisis ◽  
2002 ◽  
Vol 23 (3) ◽  
pp. 104-107 ◽  
Author(s):  
Murad M. Khan
Keyword(s):  
Sri Lanka ◽  
Mental Health Professionals ◽  
Indian Subcontinent ◽  
Interpersonal Relationship ◽  
Public Health Problem ◽  
Elderly Subjects ◽  
Important Public Health Problem ◽  
Policy Makers ◽  
Formidable Challenge ◽  
Causative Factors

Summary: The Indian subcontinent comprises eight countries (India, Pakistan, Bangladesh, Nepal, Sri Lanka, Afghanistan, Bhutan, and the Maldives) and a collective population of more than 1.3 billion people. 10% of the world's suicides (more than 100,000 people) take place in just three of these countries, viz. India, Sri Lanka, and Pakistan. There is very little information on suicides from the other four countries. Some differences from suicides in Western countries include the high use of organophosphate insecticides, larger numbers of married women, fewer elderly subjects, and interpersonal relationship problems and life events as important causative factors. There is need for more and better information regarding suicide in the countries of the Indian subcontinent. In particular, studies must address culture-specific risk factors associated with suicide in these countries. The prevention of this important public health problem in an area of the world with myriad socio-economic problems, meager resources, and stigmatization of mental illness poses a formidable challenge to mental health professionals, policy makers, and governments of these countries.

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