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Sunday, July 30, 2017

The Hindu Editorial - 1 (H1N1 returns: what can be done to control the virus)

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H1N1 returns: what can be done to control the virus (एच 1 एन 1 रिटर्न: वायरस को नियंत्रित करने के लिए क्या किया जा सकता है)



The government must urgently frame a national policy for influenza immunisation (सरकार को इन्फ्लूएंजा प्रतिरक्षण के लिए एक राष्ट्रीय नीति को तत्काल फ़्रेम करना चाहिए)
 
So far this year, 12,500 people have been infected (संक्रमित) with the influenza A (H1N1) virus, of which 600 have died. According to official data, Maharashtra alone has registered 284 deaths, which by itself is much more than the total mortality (मृत्यु-दर) figure of 265 in the country as a result of H1N1 in 2016. Even in the first three months of 2017, the number of cases and deaths were fairly (काफी) high, at over 6,000 and 160, respectively. Maharashtra could have recorded the highest number of cases and deaths caused by the H1N1 virus because of better awareness and and a relatively more robust (मजबूत) surveillance (निगरानी) system. But there is every possibility of a spike (खूंटा ठोकना) in the number of cases in the coming months with cooler temperatures setting in and winter still months away. Though the incidence (घटना) of H1N1 is likely to be less than in 2015, when the death toll (मृतकों की संख्या) was about 3,000, the steady (स्थिर) toll being taken by “swine flu” is a big cause for concern (चिंता का बड़ा कारण). The whole genome sequencing carried out at Pune’s National Institute of Virology has confirmed that the virus has not undergone any significant mutation (परिवर्तन) to make it more virulent (विषैला). The virus has undergone point mutations, which is normal and reflects its evolution (इसके विकास को दर्शाता है), but this has no correlation with virulence (विषमता के साथ सहसंबंध) whatsoever. For instance, the California strain (तनाव) had been circulating around the world since the 2009 H1N1 pandemic (महामारी). But as a result of point mutations, a new strain — the Michigan strain — emerged last year (पिछले साल उभरा). India witnessed the circulation of both the California and Michigan strains in 2016. This year, surveillance revealed (प्रकट) that the H1N1 virus found in India is only the Michigan strain.

As in the case of the California strain, the Michigan strain too is susceptible (
अतिसंवेदनशील) to the drug Oseltamivir. In order to make the drug widely available and easily accessible so that treatment can be started early, the drug was moved from Schedule X to Schedule H1 last month. Timely diagnosis and easy and wide availability of the drug are expected to reduce mortality (मृत्यु दर को कम करने की उम्मीद है). It could also potentially increase the risk (संभवतः जोखिम बढ़ाना) of drug resistance setting in earlier. There are 42 laboratories providing diagnostic services across the country, and there is a compelling need to increase this number. The primary reason is that any delay in receiving results from reference laboratories combined with ready availability of the drug in more pharmacies will result in more prescriptions (नुस्खे) being handed out even in the absence of a confirmed laboratory diagnosis. Since the 2009 pandemic, H1N1 has become a seasonal flu virus (मौसमी फ्लू वायरस) strain in India even during the peak of summer (गर्मी के शिखर). The only way, then, to reduce the number of cases and deaths is by framing a national policy for influenza immunisation (इन्फ्लूएंजा प्रतिरक्षण के लिए राष्ट्रीय नीति). The first step in that direction is to have qualitative and quantitative data on the vulnerable population (कमजोर आबादी पर गुणात्मक और मात्रात्मक डेटा). Meanwhile, vaccinating health-care workers who come in contact with high-risk patients should be a priority (इस बीच, उच्च जोखिम वाले रोगियों के संपर्क में आने वाले स्वास्थ्य देखभाल कार्यकर्ताओं को टीकाकरण प्राथमिकता होना चाहिए).
 
आपको यह पोस्ट पढ़कर कैसा लगा, कृपया हमें कमेंट के माध्यम से बताएं। आप सभी का धन्यवाद !!! हमारे पोस्ट को लाइक, कमेंट, शेयर तथा सब्सक्राइब करें।
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Mesolithic Age (10,000-6,000 BC)(मध्यपाषाण काल (10, 000-6, 000 ईसा पूर्व))

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Mesolithic Age (10,000-6,000 BC)(मध्यपाषाण काल (10, 000-6, 000 ईसा पूर्व))


 
It was the transitional period (संक्रमणकालीन अवधि) between Palaeolithic and Neolithic ages (पुरापाषाण काल और नवपाषाण काल). Its characteristic tools are microliths, all made of stone. The microliths were first discovered by Carlyle in 1867 from Vindhyan Rock Shelters. This Age is also known by various names like Late Stone Age or Microlithic Age. The Mesolithic people lived on hunting, fishing and food-gathering. Earliest domestication of animals (जानवरों का पालना) has also been witnessed from Madhya Pradesh and Rajasthan.
 
Mesolithic Tools

Tools are characterised by parallel-sided blades taken out from prepared cores of fine-materials as chert, crystal, chalcedony, jasper, carnelian, agate etc. and were generally one to five centimetres long.
 
Paintings

At various sites in Bhimbetka, Adamgarh, etc. rock and cave paintings have been discovered which belong to this period. In these paintings, various subjects including animals and human scenes have been found (इन चित्रों में, पशुओं और मानव दृश्यों सहित विभिन्न विषयों को मिला है). Animals are the most frequently depicted subject (चित्रित विषय) either alone or in large and small groups and shown in various poses.

Depiction of human figures in rock paintings is quite common (
रॉक पेंटिंग्स में मानव आकृतियों का चित्रण काफी आम है). Dancing, running, hunting, playing games and quarrelling were commonly depicted scenes. Colours like deep red, green, white and yellow were used in making these drawings.

By this time, paintings have started depicting humans as central fIgure, that too in groups which indicates the beginning of community life (
जो सामुदायिक जीवन की शुरुआत को इंगित करता है).


आपको यह पोस्ट पढ़कर कैसा लगा, कृपया हमें कमेंट के माध्यम से बताएं। आप सभी का धन्यवाद !!! हमारे पोस्ट को लाइक, कमेंट, शेयर तथा सब्सक्राइब करें।
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Saturday, July 29, 2017

Palaeolithic Age (5,00,000 - 10,000 BC) (पुरापाषाण काल (5,00,000 - 10,000 ईसा पूर्व))

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Palaeolithic Age (5,00,000 - 10,000 BC) (पुरापाषाण काल (5,00,000 - 10,000 ईसा पूर्व))


It was basically a hunting (शिकार करना) and food gathering (खाद्य इकठ्ठा करना) culture (संस्कृति). 'Palaeo' means 'old' and ’lithic’ means ’stone'. Palaeolithic age in India is divided into three phases:

The three phases are named on the basis of vertical excavation. The earliest remains are found deeper in the excavation whereas the newer ones are found on top of them.Therefore, the oldest are named as 'Lower' Paleolithic and later ones as 'Upper’ Paleolithic.
 
1.  Early or Lower Palaeolithic (5,00,000-1,00,000 BC) (प्रारंभिक या निचला पुरापाषाण)
It covers the greater part of the Ice Age and its characteristic feature is the use of hand-axe, cleaners and choppers (हाथ-कुल्हाड़ी, क्लीनर और कुल्हाड़ा).

2. Middle Palaeolithic (1,00,000-40,000 BC) (मध्य पुरापाषाण)
The Middle Palaeolithic culture is characterised by flakes (गुच्छे द्वारा विशेषता). The principal tools are variety of blades, points and scrappers made of flakes (विभिन्न प्रकार के ब्लेड, अंक और गुच्छे से बना स्क्रैपर).

3. Upper Palaeolithic (40,000-10,000 BC) (
ऊपरी पुरापाषाण)
It marks the appearance of (की उपस्थिति के निशान) Homo sapiens and new flint industries (नए चकमक उद्योगों); widespread appearance of a figurines and other artifacts reflecting art and rituals (कला और अनुष्ठानों को दर्शाती एक मूर्तियों और अन्य कलाकृतियों का व्यापक रूप); the appearance of wide range of bone tools, including needles, fishing tools, harpoons, blades and burin tools (सुइयों, मछली पकड़ने के उपकरण, हापून, ब्लेड और बर्गन टूल्स सहित हड्डी के विभिन्न उपकरणों की उपस्थिति।)

Palaeolithic People (पुरापाषाण काल के व्यक्ति)

 

Earliest Palaeolithic man lived on hunting and food-gathering. The hunting and gathering pattern was dependent upon the season. The nature of stone tools also varied according to the climate. Not knowing how to grow his food, he ate fruits, birds, raw animal flesh etc. The people were wanderers and moved from place to place. They took refuge under the rocks' in caves and hollow tree trunks.


Rock paintings and carvings have been numerously found in Bhimbetka from different periods. The oldest painting of Bhimbetka belongs to the upper Palaeolithic period.The paintings belonging to this period are linear representation in green and dark red, of figures of animals such as bisons, elephants, tiger, rhinocerous etc.

The most important feature of these paintings is that the animals are generally depicted much larger in size. it indicates that still man was more threatened by other animals, a situation which reversed in later period. 


Facts to Remember (याद करने के लिए तथ्य)

Robert Bruce Foote was the first to discover a Palaeolithic stone tool In India In 1863. (रॉबर्ट ब्रूस फूटे ने 1863 में भारत में पुरापाषाण पत्थर के औजार का पता लगाया था।)


आपको यह पोस्ट पढ़कर कैसा लगा, कृपया हमें कमेंट के माध्यम से बताएं। आप सभी का धन्यवाद !!! हमारे पोस्ट को लाइक, कमेंट, शेयर तथा सब्सक्राइब करें।
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Friday, July 28, 2017

Pre - Historic Period - Introduction (पूर्व-ऐतिहासिक काल - परिचय)

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Pre - Historic Period (पूर्व-ऐतिहासिक काल)


Introduction (परिचय)


The earliest human fossils (
मानव जीवाश्म) have been found in Africa dating about 4.2 million years. The primitive man (आदिम आदमी) was shorter in height and had a smaller brain. Homo sapiens evolved over a period of these years about 50,000 years ago. Unfortunately (दुर्भाग्य से), except for the solitary find (अकेले खोजने) of a hominid fossil from Hathnora in the Narmada Valley dating back to 1.4 million years ago, no early human fossils have been found in India. Since their appearance (दिखावट), the humans have been using stone tools (पत्थर के औजार) and their life story is, therefore, divided into Paleolithic (पुरापाषाण), Mesolithic (मध्यपाषाण), and Neolithic (नवपाषाण) ages.

Evolution of Man (मनुष्य का विकास)


1. First Fossil (
पहला जीवाश्म)

Male - Ramapithecus
Female - Shivapithecus (10-14 million years ago)

2. These fossils were found in Shivalik and Salt range (
शिवालिक और साल्ट रेंज में ये जीवाश्म पाए गए थे).

3. Homoerectus: Found in Hathnora (Lower Palaeolithic) 10 lakh BC.

4. Homo sapiens: Found in Upper Palaeolithic Regions 
(ऊपरी पुरापाषाण क्षेत्र में मिला).
 

आपको यह पोस्ट पढ़कर कैसा लगा, कृपया हमें कमेंट के माध्यम से बताएं। आप सभी का धन्यवाद !!! हमारे पोस्ट को लाइक, कमेंट, शेयर तथा सब्सक्राइब करें।
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