To address the problem of poor stability ultrasonic machining wave-absorbing honeycomb material, this study takes cutting material with a disc cutter as research object and establishes multi-degree-of-freedom mathematical model system based on relative positions tool, motion characteristics tool. On basis, modal analysis cell wall plate is carried out to draw Lobe diagram stability, process exp...

On many volcanoes, there is evidence of a relationship between dome collapse and periods of high precipitation. We propose a mechanism for this relationship and investigate the conditions that optimize failure by this process. Observations of elongate lobes that evolve through exogenous growth of lava domes reveal that they commonly develop tensile fractures perpendicular to the direction of mo...

Experimental examination of the gyroscopic and rotary inertia effects on the chatter boundary in a milling operation is the chief aim of this article. The equations of motion of the tool vibration are derived based on Timoshenko beam theory and Hamilton principle by considering gyroscopic moment, rotary inertia, velocity-dependent process damping and radial immersion effect. For a range of dept...

During the harvesting of cut-stem vegetables, structural parameters cutters have an important influence on effect. Structural stalks directly affect cutting effect cutter. The thickness stalk xylem has a strong stability and surface In this paper, broccoli conventional toothless was investigated using as object. It found that thicker leads to shear force fluctuations, which in turn affects smoo...

Over the past four years (1360-1364) we have surgically treated seven infants for lobar emphysema. The pathologic lesion in all patients was in upper lobe of the left lung. Respiratory distress and pneumonia are the cardinal symptoms of patients with this abnormality. Diagnosis is confirmed by chest x-ray. The treatment of choice is lobectomy of affected lobe. 

Ovine pulmonary adenocarcinoma (OPA) is a contagious and transmissible lung cancer of sheepresembling human bronchiolo-alveolar carcinoma. In the present study, lungs of 9400 sheep slaughtered inFars province, Iran were examined morphopathologically. The OPA was diagnosed in the lungs of 21(0.22%) out of 9400 sheep. Frequency of involvement of different lobes in the affected lungs was includeda...

We argue the behavior of Poynting flux-dominated outflows from AGN in the galactic cluster systems by performing three-dimensional MHD simulations within the framework of the ”magnetic tower” model. Of particular interests are the structure of MHD waves, the cylindrical radial force balance, the (de)collimation, and the stability properties of magnetic tower jets. Transition between the jet/lob...

Background: Epilepsy is considered as one of the most important disorders in neurology. Temporal lobe epilepsy is a form of epilepsy including two main types of mesial and lateral (neocortex). Objectives: Determination and comparison of electroencephalogram (EEG) pattern in the ictal and interictal phases of mesial and lateral temporal lobe epilepsy. Materials and Methods: This cross-sectiona...