In this study, 19 sites representing different habitats in Hail region were regularly visited for two years, in each site 2-5 stands were selected for investigating floristic composition and vegetation types in the area. A total of 124 species representing 34 families were recorded. The family Asteraceae is represented by the highest number of species (21 species) followed by the Poaceae (17 sp...

introduction hazards can be divided into two main groups: one based on origin and other based on speed of occurrence. from view point of speed, the hazards divided into catastrophe and gradual types. for example earthquake, flooding, landslide, avalanche and intense rainfall especially hail are classified into catastrophe events. gradual events include drought, global warming and soil creeping....

Abstract. In Switzerland, hail regularly occurs in multi-day clusters. The atmospheric conditions prior to and during clusters are described contrasted the isolated days. analysis focuses on days that occurred between April September 2002–2019 within 140 km of Swiss radar network. Hail north south Alps defined using a minimum area threshold radar-based product. Multi-day as 5 d windows containi...

Hail boration! 2-Dimethylaminopyridine-ligated dihaloborocations [X2B(2-DMAP)](+) with a strained four-membered boracycle were used for the haloboration of terminal and dialkyl internal alkynes (see scheme). Esterification then provided vinyl boronate esters as useful precursors to tetrasubstituted alkenes. Following mechanistic studies, the scope of the haloboration was expanded simply by vari...

Problem, research strategy, and findings New transportation options like ride-hail can expand accessibility without the costs of car ownership. Ride-hail’s potential is particularly salient for lower-income zero-car households. We used interviews a national (U.S.) survey to examine how why travelers in United States use ride-hail. Survey interview responses provided temporal snapshot thus refle...

Ride-hailing services such as Lyft and Uber can complement rides offered by family, friends, paid providers, public transit. To learn why older adults might wish to use ride-hail, we conducted an online survey of 2,917 California respondents age 55 older. Participants were asked whether they would value four features hypothesized be benefits ride-hailing. We specified binary logit models used m...

Abstract Producers and crop insurance providers will benefit from an accurate assessment of yield reduction after hailstorms that considers management, weather, growth stage, impacted part (hail affected canopy position). But, limited information is available. The main objectives this study were to quantify wheat ( Triticum aestivum L.) losses associated with simulated hail damage timing positi...