scholarly journals Taphonomy and palaeopathology of two mysticete whales, upper Miocene Pisco Formation, Peru

2020 ◽  
Vol 30 (1) ◽  
pp. 1
Author(s):  
Raúl Esperante ◽  
Orlando Poma
Keyword(s):  
Bone Fractures ◽  
The Other ◽  
Rocky Shores ◽  
Trace Evidence ◽  
Upper Miocene ◽  
Shark Teeth ◽  
Pisco Formation ◽  
Oxygenated Water ◽  
Marine Platform ◽  
Large Predators

Two mysticete fossil whales from the upper Miocene of the Pisco Formation in Peru are described that show healed bone-fractures in ribs. One specimen is preserved in a tuffaceous diatomaceous siltstone and the other specimen is preserved in siltstone. Both specimens are well preserved, mostly articulated and almost complete. Shark teeth were found associated with one of the skeletons, but both specimens lack any trace evidence for the activity macro-scavengers. We suggest that the cause of bone fracture may have been collision with rocky shores, other wales, or large predators. The fact that the rib fractures healed indicates that the whales did not die due the bone fractures. Sedimentologic and paleontological evidence indicate that they were rapidly buried in the marine platform with well-oxygenated water

Two new Cumella (Crustacea: Cumacea: Nannastacidae) from the North Pacific, with a key to the North Pacific Cumella

Zootaxa ◽  
2009 ◽  
Vol 2149 (1) ◽  
pp. 50-61
Author(s):  
SARAH GERKEN
Keyword(s):  
New Species ◽  
North Pacific ◽  
The Other ◽  
Rocky Shores ◽  
The North ◽  
Two New Species ◽  
The North Pacific

Two new species of Cumella (Cumacea: Nannastacidae), C. oculata and C. alaskensis are described from shallow Alaskan rocky shores. The new species C. oculata can be distinguished from other North Pacific Cumella by the combination of a large eye lobe, no spines dorsally on the carapace, and carapace without large tubercles. The new species C. alaskensis can be distinguished from the other North Pacific Cumella by the 5 spines distributed unequally on the dorsal crest.

Shark fauna and depositional environment of the earliest Cretaceous Vitabäck Clays at Eriksdal, southern Sweden

2002 ◽  
Vol 93 (1) ◽  
pp. 59-71 ◽  
Author(s):  
Jan Rees
Keyword(s):  
Depositional Environment ◽  
The Other ◽  
Silty Clay ◽  
Southern Sweden ◽  
Lower Salinity ◽  
Shark Teeth ◽  
Large Bulk ◽  
Single Tooth ◽  
Main Portion ◽  
Fin Spines

ABSTRACTA section of the Vitabäck Clays at Eriksdal in southern Sweden was sampled for vertebrate fossils. Large bulk samples were collected from three horizons, including two coquina beds, VC3 and VC11, and a silty clay bed, VC7. Shark teeth are very common and constitute the main portion of the vertebrate material discussed herein. The selachian tooth faunas are almost exclusively represented by hybodonts, although a single tooth from a neoselachian shark, Squatinidae indet., was recorded from one horizon (VC3). Hybodont species identified from the Vitabäck Clay samples include Egertonodus basanus, Hybodus parvidens and Parvodus rugianus. Hybodont remains, other than teeth, include five morphotypes of placoid scales, incomplete cephalic spines and fragmentary fin spines.Other fossil groups represented in the sieved residues from the bulk samples include bivalves, gastropods and bony fish. Together with the selachians, they indicate fluctuating palaeosalinities in the area. The lower coquina bed, VC3, includes taxa indicating mesohaline conditions while the composition of the fauna in the other coquina bed, VC11, suggests oligohaline settings. In bed VC7, the presence of amphibian remains and the rarity of selachian fossils indicate an even lower salinity. Palynomorphs from the basal part of the section, immediately below bed VC3, indicate an earliest Cretaceous (Berriasian) age.

scholarly journals Diagnosis and Treatment of Patients with Traumatic Retroperitoneal Hematoma Complicated with Bone Fractures

2020 ◽  
Vol 26 (1) ◽  
pp. 14-18
Author(s):  
Filip Daniel ◽  
Sarbu Vasile
Keyword(s):  
Vertebral Fractures ◽  
Bone Fractures ◽  
Statistical Significance ◽  
The Other ◽  
Retroperitoneal Hematoma ◽  
Aminotransferase Level ◽  
Diagnosis And Treatment ◽  
Pelvic Bone ◽  
Bone Lesions ◽  
Hematological Analysis

Abstract Objective: Traumatic retroperitoneal hematoma (RPH) is an underdiagnosed entity, turned to have a high mortality rate, when is not earlier diagnosed. Our aim was to analyze our experiences in patients with traumatic RPH complicated with bone fractures, and highlight the problems in diagnosis and treatment to facilitate the surgeon’s decision. Methods: In this retrospective study, all cases who presented to the emergency room (ER) and/or admitted to our center with bone fractures complicated with RPH from January 2016 to December 2019 were included (4-years data). Data collected included age, hematoma zones, fracture production mechanisms, mortality, surgical intervention, bones lesions frequency, frequency of pelvic bone injuries, complications and biochemical and hematological analysis (e.g. hemoglobin (Hb), hematocrit (Ht), platelets (PLT), leukocytes (Leu), aspartate aminotransferase level (AST), alanine aminotransferase level (ALT) and creatinine (Cr). All RPHs were diagnosed using computed tomography scan. Results: A total number of 173 RPH cases with bone fractures were included with a mean age of 48.80±1.40. Zone II and III (lateral and pelvic hematoma) bleed were the most common type of RPH. The main fracture production mechanism was road accident (n=110). The bone lesions frequency besides pelvis, was seen in lumbar vertebral fractures (e.g. 19 cases in 2016, 38 cases in 2017, 45 in 2018 and 40 in 2019), comparing with the other fractures, without any statistical significance. An important significance was seen for frequency of pelvic bone injuries, when comparing 2016 with 2018 year (p=0.040). Furthermore, the complications seem to have a statistical significance when 2016 year was compared with all the other years (p=0.030, p=0.035, p=0.052). Regarding the biochemical and hematological analysis, a statistical significance was seen at Hb (when 2016 was compared with 2017 year, p=0.007 and 2018 year, p=0.001), Ht (when 2016 was compared with 2017, p=0.054 and 2018, p=0.002), PLT (when 2016 was compared with 2018 year, p=0.0004, and 2019 year, p=0.002) and ALT (when 2016 was compared with 2017 year, p=0.026, and 2018 year, p=0.026). The highest mortality was registered in 2019 (n=11), being statistically significant in comparison with 2016 year (p=0.030). About 109 patients were treated conservatively, and 64 by surgical interventions. Conclusion: There is a lack of evidence for the best management in RPH, conservative approaching being reserved only for patients who are stable. Therefore, traumatic RPH complicated with bone fractures, especially lumbar vertebral fractures, represent a life-threatening condition, early diagnosis and correct treatment is of upmost importance.

Population structure of the invasive bivalve Isognomon bicolor on rocky shores of Rio de Janeiro State (Brazil)

2009 ◽  
Vol 90 (3) ◽  
pp. 453-459 ◽  
Author(s):  
A. Breves-Ramos ◽  
A.O.R. Junqueira ◽  
H.P. Lavrado ◽  
S.H.G. Silva ◽  
M.A.G. Ferreira-Silva
Keyword(s):  
Population Structure ◽  
Temporal Variation ◽  
Rio De Janeiro ◽  
The Other ◽  
Rocky Shores ◽  
Reef Structure ◽  
Janeiro State

The aim of this study was to compare the population structure of the invasive bivalve Isognomon bicolor in three different areas on the coast of Rio de Janeiro State and to verify its temporal variation. All the areas presented high densities, reaching more than 1000 live individuals per 100 cm2. The number of dead individuals and recruits was higher in Ilha do Brandão (Angra dos Reis) than in the other areas. The individuals sampled at Praia Vermelha (Rio de Janeiro) presented the highest maximum and mean sizes, compared to those found at Ilha do Brandão. In this area, vermetid molluscs are dominant and build a complex reef structure where only a few individuals of I. bicolor can really grow.

scholarly journals Discourse and Wolves: Science, Society, and Ethics

2010 ◽  
Vol 18 (1) ◽  
pp. 75-92 ◽  
Author(s):  
William S. Lynn
Keyword(s):  
Natural World ◽  
The Other ◽  
Collective Agency ◽  
Social Discourse ◽  
Cognitive Ethology ◽  
Social Perspectives ◽  
Ethical Discourse ◽  
Knowledge Requirements ◽  
Large Predators ◽  
Do So

AbstractWolves have a special resonance in many human cultures. To appreciate fully the wide variety of views on wolves, we must attend to the scientific, social, and ethical discourses that frame our understanding of wolves themselves, as well as their relationships with people and the natural world. These discourses are a configuration of ideas, language, actions, and institutions that enable or constrain our individual and collective agency with respect to wolves. Scientific discourse is frequently privileged when it comes to wolves, on the assumption that the primary knowledge requirements are matters of ecology, cognitive ethology, and allied disciplines. Social discourse about wolves implicitly challenges this privilege and provides a rich array of social perspectives on human-wolf relations. Ethical discourse has until recently lagged behind the other two. So too, ethicists are increasingly challenging the adequacy of scientific and social discourse. They do so by calling attention to the value-laden character of all discourse, and the unavoidable ethical questions that confront us as we learn to share the landscape with large predators like wolves.

scholarly journals The frequency of bone fractures among patients with chronic kidney disease not on dialysis: two-year follow-up

2017 ◽  
Vol 55 (4) ◽  
pp. 222-228 ◽  
Author(s):  
Andreja Figurek ◽  
Vlastimir Vlatkovic ◽  
Dragan Vojvodic ◽  
Branislav Gasic ◽  
Milorad Grujicic
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Bone Fractures ◽  
The Other ◽  
Mineral And Bone Disorder ◽  
Bone Disorder ◽  
The Mean ◽  
Frax Score ◽  
Pth Level

Abstract Introduction. Renal osteodystrophy is a severe complication of chronic kidney disease (CKD) that increases morbidity and mortality in these patients. Mineral and bone disorder starts early in CKD and affects the incidence of bone fractures. The aim of this study was to observe the frequency of diverse bone fractures in patients with CKD not on dialysis. Methods. This cohort study included 68 patients that were followed during the two-year period. The patients were divided into two cohorts: one that developed bone fractures and the other that did not. There were 35 (51.5%) men and 33 (48.5%) women. The mean age of patients ranged 62.88±11.60 years. During follow-up serum values of chronic kidney disease – mineral and bone indicators were measured. The methods of descriptive and analytical statistics were used in order to analyze obtained data. Results. During this two-year follow-up seven patients developed bone fractures. Among them, females dominated (6 patients) compared to males (only 1 patient). The most common were fractures of forearm. The mean level of parathyroid hormone (PTH) at the beginning of the monitoring was higher in the group of patients with bone fractures (165.25 ± 47.69 pg/mL) in regard to another group (103.96 ± 81.55 pg/mL). After two-year follow-up, this difference became statistically significant at the level p < 0.05. Patients that developed bone fractures had higher FRAX (Fracture Risk Assessment) score compared to another group. Conclusion. In our study, about 10% of patients had bone fractures in the two-year follow-up period. Patients who developed fractures had a higher PTH level and FRAX score.

Distribution and ecology of crayfish in the Kawartha Lakes region of southern Ontario

1978 ◽  
Vol 56 (2) ◽  
pp. 166-177 ◽  
Author(s):  
Michael Berrill
Keyword(s):  
Relative Abundance ◽  
The Other ◽  
Rocky Shores ◽  
Southern Ontario ◽  
Limited Distribution ◽  
Complex Combination ◽  
Breeding Cycles ◽  
Direct Competition ◽  
Distribution And Ecology ◽  
Shield Lakes

The distribution, relative abundance, and breeding cycles of seven species of crayfish were examined in the Kawartha Lakes region of southern Ontario. Of the five Orconectes species, whose breeding cycles are remarkably synchronous, the recently introduced O. rusticus has become particularly successful and now occurs commonly in the widest range of habitats where it may be replacing both O. propinquus and O. virilis. Orconectes obscurus, also recently introduced and as yet of very limited distribution, may become similarly successful. Orconectes immunis is found commonly only in the most eutrophic of the lakes, and is therefore not involved in the competition occurring amongst the other four Orconectes species. The two Cambarus species in the region, C. bartoni and C. robustus, are restricted to some of the swifter rapids and falls and to the rocky shores of some of the Shield lakes and, at least in part because their breeding cycles are organized differently, also appear uninvolved in direct competition with the Orconectes species. The success of O. rusticus is likely to be due to a complex combination of behavioral and physiological characteristics.

Asymptomatic Coronavirus Disease 2019 in Patients with Trauma: A Report of Three Cases in a General Hospital

2020 ◽  
Author(s):  
Seyed Mohammad Javad Mortazavi ◽  
Seyed Hadi Kalantar ◽  
Nima Shahryarpour
Keyword(s):  
Bone Fractures ◽  
The Other ◽  
Disease Spread ◽  
Protective Equipment ◽  
Trauma Patients ◽  
Intertrochanteric Fractures ◽  
Orthopedic Trauma ◽  
Clavicular Fracture ◽  
Old Patients ◽  
Orthopedic Surgeons

Background: Patients with asymptomatic coronavirus disease 2019 (COVID-19) can transmit the disease to others. Since the trauma patients represent a portion of society and can be asymptomatic carriers of COVID-19, it is essential for medical staff to use precautions when managing all trauma patients with or without symptoms of COVID-19. Case Report: In this article, we discuss three patients with bone fractures who had no previous symptoms of COVID-19. Two cases were old patients with intertrochanteric fractures, and the other one was a young man with a distal clavicular fracture. All patients were diagnosed incidentally in the course of the admission. Conclusion: Emergency room (ER) personnel and orthopedic surgeons should be aware of asymptomatic COVID-19 cases. It is important to use standard personal protective equipment (PPE) during the evaluation of all patients with orthopedic trauma to prevent disease spread.

Note preliminaire sur le Tertiaire superieur du Chili centre-nord

1966 ◽  
Vol S7-VIII (5) ◽  
pp. 760-765 ◽  
Author(s):  
Dietrich Herm ◽  
Roland Paskoff
Keyword(s):  
Sea Level ◽  
The Other ◽  
Great Activity ◽  
North Central ◽  
Central Chile ◽  
Upper Miocene ◽  
Other Hand ◽  
Continental Deposits ◽  
Basic Facts ◽  
The One

Abstract Research on the faunal evolution of the marine Neogene in north-central Chile (D. H.) has shown the existence of an important sedimentary hiatus between the upper Miocene and the upper Pliocene. Other work carried out independently (R. P.) shows that the lower Pliocene corresponds exactly to a period of great activity of exogenetic forces on the continent related to very low sea level. Two basic facts appear in the light of these observations: on the one hand the existence of continental deposits of the lower Pliocene in the bottoms of present valleys, on the other hand the necessity of adopting, to account for Plio-Quaternary events, a 'long' chronology that refers to the beginning of the Pliocene the great dislocations that have given the Andean system its mountainous proportions.

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