نتایج جستجو برای: temperature rising

تعداد نتایج: 486843  

Journal: :جغرافیا و مخاطرات محیطی 0
فاطمه رعیت پیشه ابوالفضل مسعودیان

1. introduction as strongly accepted among climatologists, climate change is a result of human activities. there is disagreement about how to define climate change, because of tremendous difference of climate changes in scale, intensity and occurrence time in various regions. recently there have been several observation analyses involving daily and extreme daily temperature trend and variabilit...

2005
Ben I. McNeil Richard J. Matear David J. Barnes

[1] In their original paper [Kleypas et al., 1999] and in subsequent papers, Kleypas and others considered how acidification of the surface ocean by rising atmospheric CO2 might impact coral reef calcification by affecting the aragonite saturation state of seawater (arag). They concluded that coral calcification is already compromised and predicted further declines through the 21st Century. We ...

Journal: Polyolefins Journal 2014

In this work, the role of comonomer content of 1-hexene-medium density polyethylene (MDPE) copolymer, synthesized using Phillips catalyst, on thermal behavior parameters such as: crystallization, melting temperature and thermal degradation was investigated in detail. The copolymer was fractionated to homogenous short-chain branching (SCB) fractions by "preparative temperature rising elution fra...

2017
Zhigang Pan Yong Zhang Zhenzhen Cheng Jiaming Tong Qiyu Chen Jianpeng Zhang Jiaxiang Zhang Xin Li Yunjia Li

The existing temperature sensors using carbon nanotubes (CNTs) are limited by low sensitivity, complicated processes, or dependence on microscopy to observe the experimental results. Here we report the fabrication and successful testing of an ionization temperature sensor featuring non-self-sustaining discharge. The sharp tips of nanotubes generate high electric fields at relatively low voltage...

Normalized difference vegetation index and land surface temperature data, in a sample plot each from east, center and west of Nepal, from 2000 to 2015, were analyzed to identify and compare the trends of vegetation and temperature changes during the period. The data were obtained from moderate resolutions imaging spectro-radiometer. Normalized difference vegetation index charactiszes a resoluti...

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