The relation between rainfall and water accumulated in reservoirs comprises nonlinear feedbacks. Here we show that they may generate alternative equilibrium regimes, one of high water-volume, the other of low water-volume. Reservoirs can be seen as socio-environmental systems at risk of regime shifts, characteristic of tipping point transitions. We analyze data from stored water, rainfall, and ...

the effect of γ-al2o3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-al2o3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. since the properties of γ-al2o3-water nanofluids were variable, they were ...

this study was conducted to determine the appropriate irrigation interval on the basis of cumulative water evaporation from standard evaporation pan (class a) and to find out the effects of irrigation regimes on growth indices and on qualitative and quantitative yields of sugar beet. the experiment was conducted in 2005 at the lavark agricultural experiment station fields, isfahan university of...

By using distributed computing techniques and a supercluster of more than 20,000 processors we simulated folding of a 20-residue Trp Cage miniprotein in atomistic detail with implicit GB/SA solvent at a variety of solvent viscosities (gamma). This allowed us to analyze the dependence of folding rates on viscosity. In particular, we focused on the low-viscosity regime (values below the viscosity...

In response to our perceptions of the need to clarify the nature of school-based occupational therapy services at the local, state, and federal levels, we have written this article to address three areas. First, we suggest that the terminology used by school-based occupational therapists to describe their work be explained in terms that will allow parents and educators to better understand the ...

This article describes a framework for occupational therapy service provision in early intervention settings and presents pilot data aimed at examining the framework's effectiveness. The Family-Centered Framework for Early Intervention is a synthesis of concepts from the Model of Human Occupation (Kielhofner & Burke, 1980) and from the literature on play. It encompasses a systematic, holistic a...

Bedside shift reports are viewed as an opportunity to reduce errors and important to ensure communication between nurses and communication. Models of bedside report incorporating the patient into the triad have been shown to increase patient engagement and enhance caregiver support and education. Nurse shift reports and nurse handovers are 2 of the most critical processes in patient care that c...

The effect of γ-Al2O3 nanoparticles on heat transfer rate, baffle spacing and pressure drop in the shell side of small shell and tube heat exchangers was investigated numerically under turbulent regime. γ-Al2O3-water nanofluids and pure water were used in the shell side and the tube side of heat exchangers, respectively. Since the properties of γ-Al2O3-water nanofluids were variable, they were ...

There are tremendous aspects of water resources in Lebanon where the surface water sources are the most exploited. However, snow is still the major water aspect that plays a role in feeding groundwater, springs and rivers. This water resource has been ignored since long-time and it was considered only for tourism. Nevertheless, the recently existed challenges on water supply in the region, nota...

OBJECTIVE The present study examined the effect of child gender and maternal depressive symptoms on routine supervisory practices of mothers longitudinally. METHOD Self-report supervision practices were obtained at various time points from 3 months through 3 years of age. RESULTS From 3 to 36 months, the quantity of time mothers reported supervising decreased from 7.1 to 6.3 hours, and the ...