Stall and surge are strong limitations in the operating range of compressors thus one major limits jet engine performance. A promising way to push stability limit compression machines is inject a small amount flow at blade tip alter physical mechanism responsible for stall onset. This study focuses on experimental performance such system. To do so, an axial compressor test bench was equipped wi...

We read the article by Zhu et al (1) regarding an alternative approach for lumbar transforaminal epidural steroid injections. We found that their work was similar to our previously reported article, “Fluoroscopically guided transforaminal epidural dry needling for lumbar spinal stenosis using a specially designed needle” (2). In our article, we introduced a minimally invasive interventional tec...

Using the Seldinger technique in a percutaneous femoral approach, a 7 French sidewinder femorocerebral catheter is advanced over a movable-core safety J guide wire [2] to the aortic arch , where catheterization of the left carotid is attempted initially by the conventional open-loop method with withdrawal hooking of the arterial orifice . When difficulty is encountered , the following technique...

Placement of IV catheters is a painful and stressful procedure for children. J-Tip is a needle-less Food and Drug Administration approved injection system that can be used for delivery of local anesthetic before IV cannulation. In this study, we compared the effectiveness of J-Tip versus eutectic mixture of local anesthetics (EMLA) to facilitate IV cannulation and provide adequate analgesia bef...

OBJECTIVE Ultrasound guidance can increase success with peripheral nerve blocks. Accurate anesthetic injection is optimized with both clear visualization and fine adjustment of the needle tip at the target area. Good needle alignment with the ultrasound beam and using a freehand technique are both desirable for these conditions. The purpose of this report is to describe how a unique, in-plane l...

Background. Caudal epidural steroid injections (CESIs) are an effective treatment for pain. If the injection spreads in a specific pattern depending on the needle position or bevel direction, it would be possible to inject the agent into a specific and desired area. Objectives. We conducted a prospective randomized trial to determine if the needle position and bevel direction have any effect on...

In recent days, current research is going in alternative fuels due to increase in global warming and pollution in all over the world and also very stringent emission norms. In this way, the study on spray progress plays an important role in improving complete combustion and emission of fuel, because it is directly affects the air-fuel mixture formation. The macroscopic spray characteristics of ...

Background: The technique of vertical dome division or tip defining, involves incising the lateral crura and vestibular skin at or lateral to the dome or tip defining point. The incision di-vides the lower lateral cartilage into a lateral segment and a medial segment, which are advanced anteriorly and sutured together to increase tip projection. The present study aimed at assessing a new vertic...