The microtopographic changes induced by coal mining subsidence caused a series of environmental problems such as soil erosion, and vegetation degradation in the mining area.However, the corresponding influence on surface vegetation and soil characteristic in different parts of the slope was completely different.To understand soil and vegetation deg
We present an observational study of the formation and disappearance of a funnel prominence.Before the funnel prominence formed, cool materials from the top of a preexisting polar crown prominence flowed along saddle-shaped coronal loops to their base, forming a smaller prominence.Meanwhile, the saddle-shaped coronal loops gradually rose, and U-sha
Energy prices have gone up gradually since last year, but a drastic hike has been observed recently in the past couple of months, affecting people’s thrift.This, coupled with the load shedding and energy shortages in some parts of the world, led many to show anger and bitterness on Water Bottle the streets and on social media.Despite subsidi
CAPTCHA is a standard security technology.To date, the most commonly used are various types of visual CAPTCHAs, in which a challenge often appears as an image of distorted text that the user must decipher.The proposed scheme Water Bottle is used visual cryptography encryption protocol to encrypt CAPTCHA image in perfectly secure way, such that only