किडनी के मरीजों में होता है इसका उपयोग 1 द्वारा नितीश प्रियदर्शी रांची के सड़कों के किनारे इस समय औषधीय पोधौं का राजा पुनर्नवा कुछ कुछ स्थानों पर पाया जा रहा है 1 अगर जानकारों की माने तो इस पौधे का इस्तेमाल उन मरीजों पर ज्यादा किया जाता है जो गुर्दे (किडनी ) की बीमारी से ग्रसित हैं1 रांची की मिट्टी, चट्टानें एवं जलवायु इस पौधे के लिये काफी उपयूक्त हैं 1 बहुत सारी निजी संस्थाएँ इन पौधों को औषधि के रूप में ऊँचे दामों पर बेचती हैं1 रांची में ये खासकर करमटोली , मोरहाबादी आदि स्थानों में लेखक को ये पौधा दिखा है1 पुनर्नवा पूरे भारत में खासकर गर्म प्रदेशों में बहुतायत से प्राप्त होता है। हर साल बारिश के मौसम में नए पौधे निकलना और गर्मी के मौसम में सूख जाना इसकी खासियत होती है। पुनर्नवा एक आयुर्वेदिक औषधि है। इस विशेषणात्मक उक्ति की पृष्ठभूमि पूर्णतः वैज्ञानिक है । पुनर्नवा का पौधा जब सूख जाता है तो वर्षा ऋतु आने पर इन से शाखाएँ पुनः फूट पड़ती हैं और पौधा अपनी मृत जीर्ण-शीर्णावस्था से दुबारा नया जीवन प्राप्त कर लेता है । इस विलक्षणता के कारण ही इसे ऋषिगणों ने पुनर्नवा नाम दिया है । इसे शोथहीन ...
The Dassam Fall is a natural cascade across the Kanchi River. by Dr. Nitish Priyadarshi Geologist A waterfall is a place where water flows over a vertical drop in the course of a stream or river. Waterfalls are also called cascades. Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens slowly, while downstream the erosion occurs more rapidly. As the watercourse increases its velocity at the edge of the waterfall, it plucks material from the riverbed. Whirlpools created in the turbulence as well as sand and stones carried by the watercourse increase the erosion capacity. This causes the waterfall to carve deeper into the bed and to recede upstream. Often over time, the waterfall will recede back to form a canyon or gorge downstream as it recedes upstream, and it will carve deeper into the ridge above it. The process of erosion, the wearing away of earth, plays an im...
By 2050, groundwater pumping will cause a global sea level rise of about 0.8 millimeters per year. by Dr. Nitish Priyadarshi Slowly but surely, the sea level continues to rise. Recent research suggests this increase is also driven by the exploitation of underground water by humans that eventually flowed into the sea. Climate change, with its associated melting ice caps and shrinking glaciers, is the usual suspect when it comes to explaining rising sea levels. But a recent study now shows that human water use has a major impact on sea-level change that has been overlooked. Science community was shocked by the claim that 42% of the sea-level rise of the past decades is due to groundwater pumping for irrigation purposes. What could this mean for the future – and is it true? Global warming is melting glaciers and causing sea levels to rise. The volume of water is also expanding because of heat. This ‘thermal expansion’ contributes significantly to the surge in the sea levels. But there ...
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