Vacuum

Nhà phân phối chính hãng Máy hút bụi công nghiệp Hiclean giá tốt nhất thị trường HICLEAN là một trong những thương hiệu thiết bị vệ sinh công nghiệp uy tín hàng đầu tại Thái Lan. Máy hút bụi Hiclean hiện là một trong những dòng sản phẩm được tiêu thụ mạnh nhất tại thị trường Việt Nam và thị trường các nước châu Âu, đồng thời cũng là sản phẩm bán chạy nhất tại Điện máy Hoàng Liên. Máy hút bụi Hiclean có tốt không? Theo thống kê từ những nhà phân phối máy hút bụi, Hiclean luôn nằm trong TOP những thương hiệu bán chạy nhất. Vì vậy, bạn hoàn toàn có thể yên tâm về chất lượng cũng như giá cả của thương hiệu này.
Nguồn: https://dienmayhoanglien.vn/may-hut-bui-hiclean.html

We read the article by Klute et al1 with interest; however, we
identified a number of issues with the article. The authors
compared the socket fit, activity level, and limb volume of 2
different prosthetic suspension systems, namely a vacuumassisted
suspension system (VASS) and a pin suspension.1
Because limited literature is available on the effect of vacuumassisted
suspension as a means of controlling residual limb
volume and pistoning,2 the article would have been more
clinically helpful if some ambiguities were clarified.
http://www.ncbi.nlm.nih.gov/pubmed/22541316

Currently there is no simple method available to assess milk ejection and breast milk flow in lactating women in both the clinical and research setting. The authors hypothesize that changes in milk flow rate are associated with milk ejection and therefore may provide a method suitable for the assessment of milk ejection and removal. Mothers (n = 23) expressed milk from one breast for a 15-minute period using both weak and strong vacuums on two to four separate occasions using an experimental electric breast pump (Medela AG, Baar, Switzerland). Breast milk flow rates were recorded at 5-second intervals by connecting a tube from the breast shield to a bottle placed on a balance that was connected to a computer. Milk ejection was determined by an acute increase in milk duct diameter in the contralateral breast using ultrasound (Acuson XP10, Siemens, Mountain View, CA), and the change in duct diameter was compared with milk flow rates. Milk flow rates ranged from 0 to 4.6 g per 5-second...

RESULTS: Seventeen patients were identified and divided into two groups. Group I consisted of seven patients with primary chest wall processes: four necrotizing soft-tissue infections and three with thoracic trauma resulting in significant loss of chest wall musculature. Group II ...

Vacuum pyrolysis of pure PVC at various temperatures and under a total pressure of 2 kPa has been performed to identify and quantify the main pyrolysis products obtained during the different stages of thermal degradation. A system consisting of a bench scale batch reactor with a condensation train was used to collect the pyrolysis products. The main gaseous and liquid

Rosemary essential oil (REO) contains bioactives having antioxidant and antimicrobial properties. This work investigated the effect of REO combined with modified atmosphere packaging conditions (MAP), in our case, aerobic, vacuum or high O2, to extend the shelf life of beef. Beef slices were wrapped in special three-layer sheets of packaging material, some with a coating of REO (active packaging, AP), and some without REO (non active packaging, NAP), and stored at 4°C for 20days. The use of REO proved efficacious in every storage condition, as seen in the lower counts of psychrotrophics, Brochothrix thermosphacta, Pseudomonas spp., and Enterobacteriaceae in AP meat compared to NAP meat. Sensory and colourimetric analyses showed that the best packaging conditions were high-O2 atmosphere in combination with REO. Based on microbiological data, shelf life of beef was 5-6days for AP samples packaged under aerobic conditions and 14-15days for AP samples in high-O2 conditions.

Vacuum-assisted closure has become a new technique in the challenging management of contaminated, acute, and chronic wounds. Although promising clinical results have been described, scientific proof to substantiate the mechanism of action of this therapy is scarce. In the present study, we examined whether the positive effect on wound healing found in vacuum-assisted closure-treated wounds could be explained by an effect on the bacterial load. Fifty-four patients who needed open wound management before surgical closure were included in this study. Wounds were randomized to either vacuum-assisted closure therapy (n= 29) or treatment by conventional moist gauze therapy (n= 25). Healing was characterized by development of a clean granulating wound bed ("ready for surgical therapy") and reduction of wound surface area. To quantify bacterial load, biopsies were collected. No significant difference was found in time needed to reach "ready for surgical therapy" comparing both therapies. Wound surface area reduction was significantly larger in vacuum-assisted closure-treated wounds: 3.8 +/- 0.5 percent/day (mean +/- SEM) compared to conventional-treated wounds (1.7 +/- 0.6 percent/day; p < 0.05). The total quantitative bacterial load was generally stable in both therapies. However, nonfermentative gram negative bacilli showed a significant decrease in vacuum-assisted closure-treated wounds (p < 0.05), whereas Staphylococcus aureus showed a significant increase in vacuum-assisted closure-treated wounds (p < 0.05). In conclusion, this study shows a positive effect of vacuum-assisted closure therapy on wound healing, expressed as a significant reduction of wound surface area. However, this could not be explained by a significant quantitative reduction of the bacterial load.