نتایج جستجو برای: copper beaten skull

تعداد نتایج: 99664  

Journal: :Industrial and Corporate Change 2021

Abstract Given that venturing into unknown territory carries substantial risk, scientists do not take the decision to enter a new field lightly. This paper analyzes broad set of factors associated with risks and rewards from entry new-to-the-researcher scientific fields, including individual capacities preferences as well incentives stemming career progression access funding. Using panel resear...

2014
Xieli Guo Jiangliu Yin Yugang Jiang

Skull metastasis from hepatocellular carcinoma (HCC) is reported rarely. In addition, solitary skull metastasis as the first symptom of HCC is reported even less. Here, we reported a case of solitary skull metastasis as the first symptom of HCC and reviewed the literature on skull metastasis. A 49-year-old male patient was admitted to Jinjiang Hospital of Quanzhou Medical College with a painles...

2017
Akira Kunimatsu Natsuko Kunimatsu

A number of tumors and tumor-like non-neoplastic lesions with different cell types on histology occur in the skull base. A wide variety in disease and lesion appearance often complicates the process of radiological diagnosis. The main role of radiographic imaging is the detection and characterization of skull base lesions, with evaluation of the extent of invasion or preservation of adjacent cr...

2014
Namkeun Kim You Chang Stefan Stenfelt

A three-dimensional finite-element (FE) model of a human dry skull was devised for simulation of human bone-conduction (BC) hearing. Although a dry skull is a simplification of the real complex human skull, such model is valuable for understanding basic BC hearing processes. For validation of the model, the mechanical point impedance of the skull as well as the acceleration of the ipsilateral a...

Journal: :Medical physics 2008
Xing Jin Changhui Li Lihong V Wang

The effects of acoustic heterogeneities on transcranial brain imaging with microwave-induced thermoacoustic tomography were studied. A numerical model for calculating the propagation of thermoacoustic waves through the skull was developed and experimentally examined. The model takes into account wave reflection and refraction at the skull surfaces and therefore provides improved accuracy for th...

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