Behavior of Inertial Capture for Micron Particles with a Droplet in a Wide Diameter Range

2021 ◽  
Author(s):  
Junhong Ji ◽  
Deqiang Li ◽  
Hongxian Du ◽  
Yu Jiang ◽  
Sitong Zhang ◽  
...  
Keyword(s):  
Wide Diameter ◽  
Diameter Range

Growth of pure wurtzite InAs nanowires over a wide diameter range

2018 ◽  
Vol 458 ◽  
pp. 269-272 ◽  
Author(s):  
Xin Yan ◽  
Bang Li ◽  
Xia Zhang ◽  
Xiaomin Ren
Keyword(s):  
Wide Diameter ◽  
Diameter Range ◽  
Inas Nanowires

A comparison of two nano-sized particle air filtration tests in the diameter range of 10 to 400 nanometers

2006 ◽  
Vol 9 (1) ◽  
pp. 93-107 ◽  
Author(s):  
Daniel A. Japuntich ◽  
Luke M. Franklin ◽  
David Y. Pui ◽  
Thomas H. Kuehn ◽  
Seong Chan Kim ◽  
...  
Keyword(s):  
Air Filtration ◽  
Diameter Range

The Effect of Catalyst on Carbon Nanotubes (CNTs) Synthesized by Catalytic Chemical Vapor Deposition (CVD) Technique

2011 ◽  
Vol 364 ◽  
pp. 232-237 ◽  
Author(s):  
S.Y. Lim ◽  
M.M. Norani
Keyword(s):  
Carbon Nanotubes ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Dry Etching ◽  
Wet Etching ◽  
Etching Time ◽  
Catalytic Chemical Vapor Deposition ◽  
Catalyst Pretreatment ◽  
Diameter Range

Catalyst plays a crucial role in determining the characteristics of carbon nanotubes (CNTs) produced by using thermal catalytic chemical vapor deposition (CVD). It is essential to investigate how the catalyst preparation affects the characteristics of CNTs because certain application demands specific size for optimum performance. This study reports the effect of the types of catalyst and the duration of the catalyst pre-treatment (wet etching time, dry etching time and ball milling) on the diameter of CNTs. The synthesized CNTs samples were characterized by scanning and transmission electron microscopy and Raman spectroscopy. Wet etching (2M hydrofluoric acid) time was varied from 1 to 2.5 hrs and the diameter range was found to be in the range of 23 to 52 nm. The diameter range for CNTs produced for 3 hrs and 5 hrs of dry etching treatment (with ammonia gas) are 38 to 51 nm and 23 to 48 nm, respectively. The diameter size of CNTs produced using Ni (14 to 25 nm) was found to be smaller than Fe (38 to 51 nm). There is a significant decrease in the diameter of CNTs by prolonging the wet etching period. Shorter and curly shaped CNTs can also be obtained by using Ni as the catalyst. Keywords: chemical vapor deposition, carbon nanotubes, catalyst pretreatment

Two anterior wide-diameter implants using the All-on-4 concept in a predictable maxillary rehabilitation: A clinical report

2016 ◽  
Vol 116 (4) ◽  
pp. 483-487
Author(s):  
Hsuan Lung ◽  
Aaron Yu-Jen Wu ◽  
Heng-Li Huang ◽  
Winston Chee
Keyword(s):  
Clinical Report ◽  
Wide Diameter

Radiology guided antegrade GASTROSTOMY deployment of mushroom (pull type) catheters with classical and modified methods in patients with oropharyngeal, laryngeal carcinoma, and anesthesia risk

2021 ◽  
pp. 20201130
Author(s):  
Süleyman Bakdık ◽  
Muharrem Keskin ◽  
Fatih Öncü ◽  
Osman Koç
Keyword(s):  
Success Rate ◽  
Complication Rate ◽  
Demographic Data ◽  
Major Complication ◽  
Good Alternative ◽  
Transoral Approach ◽  
Colon Perforation ◽  
Minor Bleeding ◽  
Technical Success Rate ◽  
Wide Diameter

Objective: The aim of study is to evaluate the results of deployment of Percutaneous Radiological Gastrostomy (PRG), which is a good alternative to Surgical Gastrostomy (SG), with transoral approach in cases where Percutaneous Endoscopic Gastrostomy (PEG) is contraindicated, difficult or unsuccessful, in patients with high risk of American Society of Anesthesiologists with four scores. In addition, we aimed to demonstrate the advantages of mushroom pull type catheters over push type gastrostomy catheters. Methods: This retrospective study included a total of 40 patients (18 females and 22 males) aged 21–92 years who underwent PRG with the antegrade transoral approach. PRG was performed by retrograde passing through the esophagus or snaring the guidewire from the stomach and taking out of the anterior abdominal wall. Patients’ demographic data, indications for PRG, procedural outcomes and complications were screened and recorded. Results: PRG was performed in 39 of 40 patients included in the study. Technical success rate was 97.5%. Procedure-dependent major complications such as death, aspiration, colon perforation, and deep abscess were not observed. Aspiration occurred in the first patient during the first feeding on the day after the procedure. Major complication rate was 2.5%. The total minor complication rate was 17.5% in 7 patients; parastomal leakage in 2 patients (5%), skin rash and infection in 3 (7.5%) patients, minor bleeding in 2 (5%) patients with oropharynx cancer, minimal bleeding from the gastrostomy catheter 1 week after the procedure in 1 (2.5%) patient. None of the cases had buried buffer. Tube functionality was preserved in all patients without any damage. Conclusion: Mushroom tip (pull type) gastrostomy catheter is a safe treatment method for patients requiring prolonged feeding because of wide diameter, endurance, long staying opening duration, less excessive dilatation and parastomal leakage, and no need for gastropexy. Lower cost and easier access are advantageous for mushroom tip pull type catheters compared to push type gastrostomy catheters in our country. The less invasive PRG is an alternative option in patients who are difficult to administer PEG, are at high anesthesia risk and cannot be sedated. Advances in knowledge: This article is valuable in terms of its contribution to develop an alternative radiological method for the deployment of gastrostomy tubes in medical difficult patients. This method has shortened the duration of the procedure and increased the success rate in patients with difficulty in transition from the stomach to the esophagus or with difficulty in the upper gastrointestinal tract. Mushroom tip catheters can be placed successfully by radiological methods.

Impact of dental implant diameter on the efficiency of fatigue - a systematic review analysis

2021 ◽  
pp. 1-12
Author(s):  
Mohamed Tharwat Hamed ◽  
Hisham Abdullah Mously ◽  
Moayyad Motaz Ghulman ◽  
Ghada Hussein Naguib
Keyword(s):  
Systematic Review ◽  
Dental Implant ◽  
Extensive Literature ◽  
Wide Diameter ◽  
Review Analysis ◽  
Body Fracture ◽  
Extensive Literature Search ◽  
Technical Complication ◽  
Performance Results ◽  
The Impact

Abstract Objective: The present study explains the success and failure of dental implant diameter on the efficiency of fatigue by conducting a systematic review analysis. Methods: An extensive literature search was conducted to carry out systematic review using different scholarly platforms and libraries. A total of 12 studies published within the past 20-year time (1999-2019) were included following the inclusion and exclusion criteria based on the PRISMA guidelines. Additionally, the study outcomes were evaluated to determine their perceptions regarding the role of dental implant diameter in influencing the implant’s fatigue performance. Results: The implant diameter can be categorized into wide diameter (5-6 mm), regular diameter (3.75-4 mm), and small/narrow diameter (3-3.4 mm). The narrow diameter implants are indicated through thin alveolar ridges and mesiodistal spaces (less than 7 mm). The implants with narrow diameter would offer greater risk of fatigue failure for clinical situations with significant functional loading. No significant differences were found either in success or failure of dental implant diameter on fatigue efficiency after 1-year and 3-year follow-up. Conclusion: The technical complication of dental implant include abutment screw loosening or fracture, abutment and superstructure fracture, and implant body fracture. The study has study has mainly focused on the impact of dental implant diameter on the efficiency of fatigue and reviewed a significant impact of dental implant diameter on the fatigue efficiency. Keywords: Dental Implants, Efficiency, Perception. Continuous...

Sign in / Sign up

Export Citation Format

Share Document