نتایج جستجو برای: spi index
تعداد نتایج: 399140 فیلتر نتایج به سال:
The ETS protein Spi-1/Pu.1 plays a pivotal and widespread role throughout hematopoiesis in many species. This study describes the identification, characterization, and functional analysis of a new zebrafish spi transcription factor spi-1– like (spi-1l) that is expressed in primitive myeloid cells, erythro-myelo progenitor cells, and in the adult kidney. Spi-1l functions genetically downstream o...
خشکسالی از جمله پدیده هایی است که در اقلیم های مختلف تکرار شده و اثرات آن صرفا به نواحی خشک و نیمه خشک محدود نمی شود، بلکه می تواند در نواحی مرطوب نیز رخ دهد. در ارزیابی خشکسالی، پایش خصوصیاتی از قبیل شدت، مدت و فراوانی آن ضروری به نظر می رسد. در این بررسی به منظور تحلیل خصوصیات خشکسالی از داده های مجموع بارش ماهانه ایستگاه های تهران، یزد، انزلی، شهرکرد، بندرعباس، زاهدان، مشهد و تبریز طی دوره آ...
Drought is a disaster phenomenon especially in arid and semi-arid areas. Vegetation and its production play a main role in the social and economic issues in every country. In this study, Standardized Precipitation Index (SPI) and Normalized Difference Vegetation Index (NDVI) data have been used to monitor drought and the vegetation condition in Sonqor Abad in, Kermanshah province. Meteoro...
Geometallurgy tries to predict the instability the behavior of ores caused by variability in the geological settings, and to optimize the mineral value chain. Understanding the ore variability and subsequently the process response are considered to be the most important functions of an accurate geometallurgical study. In this paper, the geometallurgical index is presented as a new tool to...
In order to define a modern approach for Software Process Improvement (SPI), the SPI Manifesto was developed, discussed, and finalized at the 16 EuroSPI Conference in 2009 in Alcala, Spain. The common understanding gained during the discussion and usage of the manifesto formed a nucleus from which the new ISO/IEC 33014[ISO01] was derived. In parallel to the development of the SPI Manifesto, the...
Drought monitoring is essential to detect the presence of drought, and comprehensive change drought conditions on a regional or global scale. This study used satellite precipitation data from Tropical Rainfall Measuring Mission (TRMM), but refined for in Java, Indonesia. Firstly, analysis was conducted establish standardized index (SPI) TRMM different durations. Time varying SPI spatial downsca...
We investigated the phylogenetic distribution of the SPI-1 and SPI-2 pathogenicity islands in Salmonella spp. SPI-1 was present in representatives of all eight subspecific groups, but no SPI-2-hybridizing sequences were detected in group V (S. bongori). Our data suggest that SPI-2 was acquired by S. enterica after its split from S. bongori.
As one of the most catastrophic atmospheric events, drought affects various aspects environment. Groundwater resources are sectors that influenced by long-term droughts and received insufficient attention compared to other Rainfall data collected 23 metrological stations for 20 years (2005, 2010, 2015,2020) was used investigate event its situation in Qazvin plain, central plateau Iran. Drought ...
Drought is one of the most significant impacts climate on agriculture, especially food crops. Standardized Precipitation Index (SPI) an for droughts. The research objective was to study relationship SPI values productivity rice and corn crops in Situbondo district. result showed that value time scale at three months appropriate observed corn. significantly correlated with plants Jatibanteng Arj...
The evolution of bacterial pathogenicity, heavily influenced by horizontal gene transfer, provides new virulence factors and regulatory connections that alter bacterial phenotypes. Salmonella pathogenicity islands 1 and 2 (SPI-1 and SPI-2) are chromosomal regions that were acquired at different evolutionary times and are essential for Salmonella virulence. In the intestine of mammalian hosts, S...
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