Reversible cerebral vasoconstriction syndrome is a kind of clinicoradiological syndrome reported recently. It is characterized as thunderclap headache and reversible vasoconstriction. However, headache is sometimes absent when reversible vasoconstriction happens. We report a case here admitted because of watershed infarction caused by reversible vasoconstriction without headache when happened i...

This paper presents the application of a set of spatio-temporal satellite image analysis functions based on temporal map algebra. The temporal map algebra functions treat time series of imagery as three-dimensional data sets where two dimensions encode planimetric position on the earth’s surface and the third dimension encodes time. Whereas the conventional local, focal, and zonal map algebra f...

Effects of plant age on resource acquisition and stress tolerance processes is a largely unstudied subject in herbaceous perennials. In a field experiment, we compared rates of photosynthesis (A), ribulose-1,5-bisphosphate (RuBP) carboxylation capacity (V Cmax), maximum electron transport rate (J max), and triose phosphate utilization (TPU), as well as concentrations of Rubisco and sucrose-phos...

Abstract We present the comparison of source-partitioned CO 2 flux measurements with a high-resolution urban emissions inventory (Hestia). Tower-based and 14 C are used to partition net into fossil biogenic components. A footprint model is quantify spatial variation in measurements. compare daily cycle structure Hestia eddy-covariance derived fuel on seasonal basis. exceed measured by 0.36 µ mo...

OBJECTIVE To assess whether thermoregulation in the cold season can be affected by prewarming before exercise. METHODS Four healthy non-athletic unacclimatised males were exercised to the same degree in summer and winter on a bicycle ergometer without prewarming (experiment 1) and after prewarming by sitting for 30 min in a room at 30 degrees C (experiment 2). During exercise, sweat productio...

Semi-arid ecosystems with annual moisture inputs dominated by snowmelt cover much of the western United States, and a better understanding of their seasonal drivers of soil respiration is needed to predict consequences of climatic change on soil CO2 efflux. We assessed the relative importance of temperature, moisture, and plant phenology on soil respiration during seasonal shifts between cold, ...

The present study examines the effects of historic climate variability on cold-season processes, including soil temperature, frost depth, and the number of frost days and freeze–thaw cycles. Considering the importance of spatial and temporal variability in cold-season processes, the study was conducted in the midwestern United States using both observations and model simulations. Model simulati...

Many plant species have evolved the ability to flower in the proper season by sensing environmental cues. The prolonged cold of winter is one such cue that certain plants use to acquire competence to flower the following spring. For example, biennials and winter annuals become established in one growing season and often flower quickly in the early spring of the following year to complete their ...

We examined the nutritive value of common grass species in the semi-arid rangelands of Borana in southern Ethiopia using local experience based herbage preference (LEBHP) perception and laboratory techniques. Local pastoralists in the study area were asked to identify common grass species and rank them according to the species' preferences and palatability to cattle. The pastoralists listed a t...