Precipitation of scale-forming materials from solution

Scale-forming metal oxides and carbonates, such as cupric oxide, can be precipitated from an ammoniacal leaching solution with minimum scale buildup by distilling the solution in an externally heated distillation chamber mounted for rotation about a generally horizontal axis. The distillation chamber includes a plurality of axially spaced annular baffles defining a plurality of compartments containing a tumbling medium, such as spherical balls. The solution is continuously introduced into the inlet end of the chamber and heated under pressure to a temperature above its boiling point as it flows over the baffles toward the outlet end of the chamber. A slurry containing the precipitated cupric oxide is continuously withdrawn from the outlet end and the evaporated gases are continuously withdrawn from the inlet end. The balls rub against each other, the interior of the chamber, and the sides of the baffles, as the chamber is rotated at a non-centrifuging speed, to provide a grinding or scrubbing action which minimizes a scale buildup of the precipitating cupric oxide.https://digitalcommons.mtu.edu/patents/1099/thumbnail.jp

Postcard: Hand Written Message Requesting a Press Bulletin

This black and white printed postcard contains correspondence from a man to the company that prints bulletins. Handwriting is on the front and back of the card.https://scholars.fhsu.edu/tj_postcards/2167/thumbnail.jp

Conflict Resolution in Mexican-Origin Couples: Culture, Gender, and Marital Quality

This study examined associations between Mexican-origin spouses’ conflict resolution strategies (i.e., nonconfrontation, solution orientation, and control) and (a) gender-typed qualities and attitudes, (b) cultural orientations, and (c) marital quality in a sample of 227 couples. Results of multilevel modeling revealed that Mexican cultural orientations were positively associated with solution orientation, and Anglo cultural orientations were negatively associated with nonconfrontation. Expressive personal qualities were negatively associated with control, whereas instrumental qualities were positively related to control. Links between conflict resolution and marital quality revealed that control and nonconfrontation were associated with spouses’ ratings of marital negativity. In some cases, different patterns emerged for husbands and wives. Discussion highlights the role of culture and gender dynamics in marital relationships

Science-based restoration monitoring of coastal habitats, Volume Two: Tools for monitoring coastal habitats

Healthy coastal habitats are not only important ecologically; they also support healthy coastal communities and improve the quality of people’s lives. Despite their many benefits and values, coastal habitats have been systematically modified, degraded, and destroyed throughout the United States and its protectorates beginning with European colonization in the 1600’s (Dahl 1990). As a result, many coastal habitats around the United States are in desperate need of restoration. The monitoring of restoration projects, the focus of this document, is necessary to ensure that restoration efforts are successful, to further the science, and to increase the efficiency of future restoration efforts

Impact of Prenatal Stress on Offspring Glucocorticoid Levels: A Phylogenetic Meta-analysis Across 14 Vertebrate Species

Prenatal exposure to maternal stress is commonly associated with variation in Hypothalamic Pituitary Adrenal (HPA)-axis functioning in ofspring. However, the strength or consistency of this response has never been empirically evaluated across vertebrate species. Here we meta-analyzed 114 results from 39 studies across 14 vertebrate species using Bayesian phylogenetic mixed-efects models. We found a positive overall efect of prenatal stress on ofspring glucocorticoids (d’=0.43) though the 95% Highest Posterior Density Interval overlapped with 0 (−0.16–0.95). Meta-regressions of potential moderators highlighted that phylogeny and life history variables predicted relatively little variation in efect size. Experimental studies (d’=0.64) produced stronger efects than observational ones (d’=−0.01), while prenatal stress afected glucocorticoid recovery following ofspring stress exposure more strongly (d’=0.75) than baseline levels (d’=0.48) or glucocorticoid peak response (d’=0.36). These fndings are consistent with the argument that HPA-axis sensitivity to prenatal stress is evolutionarily ancient and occurs regardless of a species’ overall life history strategy. These efects may therefore be especially important for mediating intra-specifc life-history variation. In addition, these fndings suggest that animal models of prenatal HPA-axis programming may be appropriate for studying similar efects in humans

Disconnect within Agriculture and Ecosystem Climate Effects, Adaptations and Policy

Frequently, agriculture and ecosystems (AE) are seen as separate entities, causing entity specific solutions in response to threats. Anthropogenic climate change simultaneously stresses both agriculture and ecosystems along with their interactions. Induced increasing surface temperatures [1], altered precipitation [2], drought intensification [3], altered ground and surface water quantity/quality [4,5], and diminished soil moisture [6] force adaptations for AE, but these adaptations fail to be efficient when interdependencies are not considered. Additional adaptations will be necessary, as future projections anticipate even greater climate change [1]