Drought is an extreme climate phenomenon that has a great impact on the economy, tourism, agriculture, and water resources. prediction can provide early warning of occurrence drought reduce losses. In this article, standard precipitation evapotranspiration index (SPEI) four time scales: SPEI-3, SPEI-6, SPEI-9, SPEI-12 are used to measure predict drought. Unlike general methods directly modeling...

Prediction of potential evapotranspiration (PET) using an artificial neural network (ANN) with a different architecture is not uncommon. Most researchers select the optimal statistical indicators. However, there still gap to be filled in future applications various drought indices and assessment location, duration, average, maximum minimum. The objective was compare performance PET computed ANN...

A genome and fatty acid analysis of 16 Pseudomonas stutzeri reference strains having DNA compositions ranging from 62.2 to 65.5 mol% G+C was performed by pulsed-field gel electrophoresis of XbaI and SpeI macrorestriction fragments and gas chromatography of total cellular fatty acids. Macrorestriction fragment patterns were evaluated by using previously described algorithms (D. Grothues and B. T...

We have cloned DNA methyltransferases (MTases) from various strains of Neisseria gonorrhoeae. Each of these clones represents a single specificity, indicating that the multiple gonococcal MTase specificities are encoded by monospecific MTases. The DNAs of five strains (FA5100, F62, MS11, Pgh3-2, and WR302) were digested with NheI, SpeI, or NheI plus SpeI and subjected to pulsed-field gel electr...

Accurate estimation of drought events is vital for the mitigation their adverse consequences on water resources, agriculture and ecosystems. Machine learning algorithms are promising methods prediction as they require less time, minimal inputs, relatively complex than dynamic or physical models. In this study, a combination machine with Standardized Precipitation Evapotranspiration Index (SPEI)...

introduction: drought is a recurrent feature of climate that caused by deficiency of precipitation over time. due to the rise in water demand and alarming climate change, recent year’s observer much focus on drought and drought conditions. a multiple types of deficits and relevant temporal scales can be achieved through the construction of a joint indicator that draws on information from multip...

Here, we provided a comprehensive analysis of long-term drought and climate extreme patterns in the agro ecological zones (AEZs) Pakistan during 1980–2019. Drought trends were investigated using standardized precipitation evapotranspiration index (SPEI) at various timescales (SPEI-1, SPEI-3, SPEI-6, SPEI-12). The results showed that droughts (seasonal annual) more persistent severe southern, so...