Abstract We investigated the concentration and composition of plastics in 7 Special Areas Conservation (SACs) from Gulf Venice (northern Adriatic Sea). A total 42 sediment samples were analyzed 21 sites 2017 to 2018. All except one found be polluted by plastics, with density ranging between 2250 28.4 items kg −1 . Microplastics ranged 100 61.6% collected plastics. Fragments more represented tha...

Pseudogaurax Malloch is a worldwide genus of Chloropidae with 33 species in the Neotropical region and 12 occurring Brazil. The well-known for feeding habits its larvae which attack egg masses several arthropods, usually breeding sacs spiders. In this study, we expanded distribution P. cingulatus to northern Brazil recorded first time preying on Tetragnatha sacs. addition, diagnosis, digital im...

Diverticular disease occurs when diverticula, small pouches or sacs, develop in weak spots found in the walls of the colon. Depending on the state of these sacs, two conditions may result: diverticulosis or diverticulitis. The condition is referred to as diverticulosis if the small sacs do not become inflamed or bleed. Many cases are asymptomatic, but some people may experience cramping, bloati...

Blind source separation problems are difficult because they are inherently unidentifiable, yet the entire goal is to identify meaningful sources. We introduce a way of incorporating domain knowledge into this problem, called signal aggregate constraints (SACs). SACs encourage the total signal for each of the unknown sources to be close to a specified value. This is based on the observation that...

In the vertebrate-dwelling adults of the digenetic trematodes spermatogenesis and oogenesis are not fundamentally different from these processes in other metazoan groups. The fertilized ovum in the egg develops directly into the miracidium which contains in its body cavity a varying number of germinal cells. After entering the molluscan intermediate host the miracidium metamorphoses into the pr...

Species accumulation curves (SACs) chart the increase in recovery of new species as a function of some measure of sampling effort. Studies of parasite diversity can benefit from the application of SACs, both as empirical tools to guide sampling efforts and predict richness, and because their properties are informative about community patterns and the structure of parasite diversity. SACs can be...

This paper investigates the acoustic effect of supralaryngeal air sacs on the range of sounds that a given vocal tract can generate. Humans do not have supralaryngeal air sacs, whereas apes (chimpanzees, orangutans and gorillas) do. It has also been found that the anatomy of the hyoid bone of Neanderthals (the Kebara hyoid) is consistent with the absence of air sacs, while that of Australopithe...

Parent birds of many species eat the fecal sacs produced by their nestlings. Two hypotheses have been proposed to explain why the parents ingest, rather than simply remove the sacs. (1) The parental nutrition hypothesis proposes that the parent benefits energetically or nutritionally from ingesting the sacs (Morton 1979, Gliick 1988); and (2) the economic disposal hypothesis postulates that par...

Researchers in the social sciences currently employ a variety of mathematical/ computational models for studying complex systems. Despite the diversity of these models, the majority can be grouped into one of three types: agent (rule-based) modeling, dynamical (equation-based) modeling and statistical (aggregate-based) modeling. The purpose of the current paper is to offer a fourth type: case-b...