Fluctuation of the dynamic load nature in the power transmission train

U ovom se radu analizira utjecaj parametara: režima rada, konstrukcijskih parametara i parametara stanja prijenosnika snage na dinamičko opterećenje pojedinih njegovih elemenata. Pored analitičkog razmatranja, dani su i rezultati eksperimentalnog ispitivanja utjecaja parametara režima rada i stanja prijenosnika na vrijednost momenta poluvratila jednog putničkog vozila. Na osnovu teorijskih i eksperimentalnih ispitivanja doneseni su zaključci o utjecaju parametara na opterećenje elemenata prijenosnika snage. U radu su također prikazane i usporedbe između korištenih modela i metoda ispitivanja.This paper analyses the impact of the selected parameters: operating mode, design parameters and condition of power transmission system onto the dynamic load of some on its components. Apart from analytical considerations, we also offer the experimental results related to the influence of the operating mode parameters and the condition of power transmission train system onto the torque of a passenger’s car axle-shaft. On the basis of the theoretical and experimental research, we drew some conclusions related to the impact of some parameters on the power transmission load. Furthermore, we have given the comparative study of the used models and researching methods

Pathology findings and correlation with body condition index in stranded killer whales (Orcinus orca) in the northeastern Pacific and Hawaii from 2004 to 2013.

Understanding health and mortality in killer whales (Orcinus orca) is crucial for management and conservation actions. We reviewed pathology reports from 53 animals that stranded in the eastern Pacific Ocean and Hawaii between 2004 and 2013 and used data from 35 animals that stranded from 2001 to 2017 to assess association with morphometrics, blubber thickness, body condition and cause of death. Of the 53 cases, cause of death was determined for 22 (42%) and nine additional animals demonstrated findings of significant importance for population health. Causes of calf mortalities included infectious disease, nutritional, and congenital malformations. Mortalities in sub-adults were due to trauma, malnutrition, and infectious disease and in adults due to bacterial infections, emaciation and blunt force trauma. Death related to human interaction was found in every age class. Important incidental findings included concurrent sarcocystosis and toxoplasmosis, uterine leiomyoma, vertebral periosteal proliferations, cookiecutter shark (Isistius sp.) bite wounds, excessive tooth wear and an ingested fish hook. Blubber thickness increased significantly with body length (all p < 0.001). In contrast, there was no relationship between body length and an index of body condition (BCI). BCI was higher in animals that died from trauma. This study establishes a baseline for understanding health, nutritional status and causes of mortality in stranded killer whales. Given the evidence of direct human interactions on all age classes, in order to be most successful recovery efforts should address the threat of human interactions, especially for small endangered groups of killer whales that occur in close proximity to large human populations, interact with recreational and commercial fishers and transit established shipping lanes