منابع مشابه
Footprints of the sun: memory of UV and light stress in plants
Sunlight provides the necessary energy for plant growth via photosynthesis but high light and particular its integral ultraviolet (UV) part causes stress potentially leading to serious damage to DNA, proteins, and other cellular components. Plants show adaptation to environmental stresses, sometimes referred to as "plant memory." There is growing evidence that plants memorize exposure to biotic...
متن کاملSafe in the Sun
سرطانهای جلدی را می توان به انواع پیش بدخیم و بدخیم تقسیم نمود. شایعترین ضایعه جلدی پیش بدخیم، کراتوز آفتابی نام دارد که بصورت ضایعات خشک و دلمه دار جلدی بروز می کنند - لنتیگو آفتابی یک ضایعه پیش بدخیم دیگرن است که بصورت لکه های قهوه ای و صاف (غیر برجسته روی پوست مشاهده می شوند) ضایعات پیش بدخیم در صورت عدم درمان می توانند بدخیم شوند.
متن کاملLeaving Light Footprints – the Importance of Promoting Responsible International Travel
Irresponsible travel has the potential to harm both the traveler and the host destination. The subject of responsible travel is a major focus of the International Society of Travel Medicine, whose Responsible Travel special interest group has been very active in providing leadership for travel medicine practitioners in relation to the protection of local travel destination communities. Healthca...
متن کاملthe effect of taftan pozzolan on the compressive strength of concrete in the environmental conditions of oman sea (chabahar port)
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
The Footprints of Dragons
Almost all our early ancestors believed the earth was inhabited, especially in unknown regions, by dragons. Where did they get such an idea? Did it stem from a universal human imagination? An inherited need or instinct? An inherited subconscious memory of dinosaurs? All these suggestions have been made, and taken seriously by groups of people. I believe dragons are the reflection, sometimes emb...
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ژورنال
عنوان ژورنال: Nature
سال: 1980
ISSN: 0028-0836,1476-4687
DOI: 10.1038/283244a0