Month: December 2024

Vista has always been one of the qualified members of www. bearingnet. and CBCC (www.bearing.com.cn/). 

 

On January 14, 2022, Vista delivered deep groove ball bearings 607-2ZC3P6Z2V2 and 608-2ZC3P6Z2V2 bearings to customers on schedule. High quality and fast speed have already become the label of Vista. The following is a video showing some details of Vista’s delivery, including products and exquisite packaging.

As a very excellent bearing supplier and manufacturer, Vista can complete any rational orders for customers in a fast and professional way. Vista’s products are truly good quality and are deeply loved by customers and markets at home and abroad.

 

Welcome to contact Vista for any service support!

 

About Vista:

VISTA is a leading global supplier of high-quality ball and roller bearings. Modest (Shanghai)Power Transmission Fittings Co., Ltd and Vista (Jiangsu) Industry Co., Ltd is VISTA’S sole authorized dealers in Asia to manufacture VISTA bearing products and serve customers worldwide.

 

As a one-stop bearing supplier, VISTA offers professional application analysis, solutions, and inventory management proposals. With well-trained sales and customer service staff, professional lab service, and engineer teams, VISTA not only can provide quick & accurate service, strong technical support but also meet various customers’ requirements.

 

When the whole bearing industry faces severely lagged deliveries, VISTA’S greatly optimized production process, improved production efficiency, and shortened production circle. For regular series of bearings, VISTA offers a 45-day delivery period, which can meet customers’ requirements timely.

 

Welcome all the bearing experts and users worldwide to join the VISTA family and share the achievement of VISTA.

 

Contact Vista: 

Website: www.vista-bearing.com

 

China:

Modest (Shanghai) Power Transmission Fittings Co., Ltd

Vista (Jiangsu) Industry Co., Ltd

Tel: 0086-512-50138834

Fax: 0086-512-50138847

Moblie: 13681933096,13818822628

Email: [email protected]

http://www.vista-bearing.com

http://www.vistabearing.net

 

USA:

VISTA DEVELOPING CORP

3411 Hornbeam Dr. Houston. Texas. 77082. U.S.A.

Email: [email protected]

 

AUSTRALIA:

Hi-Roll Bearings

Unit 1/44-46 Mills Road

Braeside.Victoria.3195.Australia

Email: [email protected]

http://www.hirollbearings.com.au

 

India:

Sahil International

Shop No.4, GYANI MANZIL NR HAJOORI CHAMBERS,

ZAMPA BAZAR SURAT 395003,GUJRAT,INDIA

Contact: Mr. Ritesh

Tel:00919825116683

 

Saudi Arabia

Ghazi Trading Establishment

Kilo 7 Makkah Road

Jeddah, Saudi Arabia 

Contact person: Mohammed Riazuddin 

Mobile:+966505616306

Tel: +966-2-6804872/6804873

Fax: +966-2-6877214

 

The ketogenic diet has proven successful in helping people lose weight and improve their overall health, including those with epilepsy. The low-carb diet transitions the body from burning sugar to burning fat and ketones for energy. New research suggests that increasing blood ketones by using ketogenic supplementation can reduce seizures without dietary restriction.

A new study published in Physiological Reports finds supplementing a normal, carbohydrate-rich diet with specific ketogenic agents may significantly delay tonic-clonic seizures caused by exposure to high levels of oxygen.

Oxygen toxicity is a complication that can arise following hyperbaric oxygen therapy, an FDA approved treatment used to manage various medical conditions, such as carbon monoxide poisoning, air/gas embolism and diabetic wounds. It involves inhaling pure oxygen in a pressurized or hyperbaric chamber.

“Exposure to high-pressure oxygen is also a danger to recreational, technical and military scuba divers, including Navy SEAL divers, as a seizure manifesting underwater can be lethal,” said lead author Csilla Ari D’Agostino, Ph.D., research assistant professor in the Department of Psychology at the University of South Florida College of Arts and Sciences. “As a scuba diver, I am very excited about the implications of these findings, since during 20 years of diving I have heard many stories about the dangers of being exposed to high partial pressure of oxygen and it is something that always has to be considered when planning a dive.

Dr. Ari D’Agostino and her team used a small hyperbaric environmental chamber to test the effects of ketogenic agents on rats. The animals were freely fed standard rodent chow, consisting of 70% carbohydrates. They also received different ketogenic supplements one hour before being exposed to pure oxygen in the chamber, which was pressurized to simulate technical and military dive operations. These conditions were maintained until physical symptoms of a seizure were observed.

The team found that the most effective supplement was a combination of ketone ester and medium-chain triglyceride oil in delaying the onset of hyperbaric oxygen induced seizures. The latency to seizures was delayed by 219% in that group and the seizure severity was significantly reduced as well with ketone supplementation. The neuroprotective effects of ketone supplements were associated with an elevation of blood ketone levels.

The findings show that boosting the level of blood ketones by specific ketone supplements produce therapeutic ketosis, which, in turn, may provide increased resistance to seizures induced by extreme levels of hyperbaric oxygen. Importantly, the findings support that this neuroprotective effect may not require strict adherence to dietary restrictions and can be achieved through supplementation alone.

Provided by
University of South Florida

Citation:
Ketogenic supplements delay seizures without dietary restrictions (2019, January 8)
retrieved 10 December 2024
from https://medicalxpress.com/news/2019-01-ketogenic-supplements-seizures-dietary-restrictions.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

Click:全国楼凤论坛

If people with a diabetic foot syndrome (DFS) receive hyperbaric oxygen therapy (HBOT) in addition to conventional treatment, this can promote wound healing. However, the certainty of conclusions of the available study results is restricted. Furthermore, the results for other aspects of treatment that are relevant to patients show neither hints of a benefit nor of harm. This is the finding of a final report published on June 2, 2016 by the German Institute for Quality and Efficiency in Health Care (IQWiG).

Diabetic foot can require amputation

If blood sugar levels are too high over many years in people with diabetes, this can damage the blood vessels. This leads to an insufficient circulation of blood in the extremities (i.e. the arms and legs) and to a reduction in the perception of pain (polyneuropathy). Smaller wounds, which heal poorly in people with diabetes anyway, are often therefore only noticed at a late stage. This is particularly the case if they are poorly visible, as on the feet.

If in addition an infection occurs or tissue dies (necrosis), DFS may in the worst case require partial or complete amputation of the foot.

Additional oxygen is supposed to improve blood circulation in the tissue

HBOT is recommended in addition to conventional wound care if all options to revascularize the tissue, that is, to supply a sufficient amount of blood again, have failed and there is a threat of amputation.

In HBOT, the patients sit in a special chamber and inhale (mostly) pure oxygen under increased ambient pressure. This is supposed to enrich the blood with oxygen and promote a better oxygen supply, also in the area of the wound.

Certainty of results is low in most studies

Overall the IQWiG researchers included 9 randomized controlled trials in their assessment. However, only 2 of these studies have a low risk of bias; their results can therefore be interpreted with greater certainty. In the remaining studies detailed information on the allocation of study participants to the respective groups was often lacking in the study publications. Moreover, most studies were not blinded.

Studies include different patients

Furthermore, the studies included very different patients; this applied, among other things, to disease severity. In part, great deviations between studies were also shown for the time of analysis. These could be the main reasons why, for single aspects of treatment, the results of the studies were very heterogeneous. However, other causes cannot be excluded.

Important studies yield discrepant results

The results for the outcome of wound closure are interpretable with sufficient certainty. Here, the pooling of data shows an advantage of HBOT over the control group. This is because the chance of wound closure was nearly twice as high in the HBOT arm as in the control arm. For this outcome, IQWiG therefore sees a hint of a benefit of HBOT.

In the preliminary report, the IQWiG researchers had still assumed proof of a benefit. However, in the final report they were able to include a further study that was only published in full in January 2016. Now not only one, but 2 studies with a low risk of bias are available. However, these 2 studies yield discrepant results for wound closure. In the final report IQWiG therefore downgraded the certainty of conclusions from “proof” to “a hint” of a benefit.

Either no data or no relevant group differences

No hint of a benefit was shown for any of the other patient-relevant outcomes. There are 2 reasons for this: Either the studies contained no data – this applies to the outcomes of pain, occurrence of cardiovascular diseases, as well as dependency on outside help or need for long-term care; or the included studies contained evaluable data, but these data do not show relevant differences between conventional treatment without HBOT and conventional treatment with additional HBOT. This does not just apply to the outcomes of mortality, health-related quality of life, and duration of hospital stay, but also to the necessity for amputation.

No hint of harm

At the same time there is no hint of harm from additional HBOT in the form of adverse effects. Overall, the rate of complications is comparable between both study groups, which is why HBOT is regarded to be safe.

Provided by
Institute for Quality and Efficiency in Health Care

Citation:
HBOT for diabetic foot: Hint of benefit for wound closure (2016, July 6)
retrieved 10 December 2024
from https://medicalxpress.com/news/2016-07-hbot-diabetic-foot-hint-benefit.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

While you might hear your CFO grumbling about staying under budget from a dollar perspective, staying under your loss budget from a fiber perspective has a much bigger impact on your network performance – which ultimately impacts your bottom line by avoiding downtime.

But how exactly is your loss budget defined and how do you ensure you don’t exceed it?

What is a Loss Budget?

Expressed in decibels (dB), loss of signal happens along the length of any cable. It is a natural phenomenon that occurs for any type of transmission—electrical or data. And the longer the cable, the greater the loss. Loss also occurs at any connection points along the way such as connectors or splices.

Terminology can be confusing since most simply refer to “loss” when talking about loss budgets. The full name of the parameter is “insertion loss” – and to add to the confusion, insertion loss is also sometimes referred to as attenuation. In fact, standards used to call it “attenuation” but since that was more of a general term that refers to ANY reduction in the strength of a signal, the terminology changed to insertion loss.

Different fiber applications have different maximum insertion loss requirements to ensure that the loss isn't too high to prevent the signal from properly reaching the far end. Loss budgets should be determined during the early design stage to make sure your cable plant does not exceed the maximum specification for your application.

What Do I Calculate?

Your loss budget is made up of all the components in your channel, including fiber, connectors, splicing, splitters and couplers. The active equipment also needs to be considered per the equipment manufacturer’s specifications based on any differences between transmitters and receivers, as well as some margin to account for loss of power over time that can occur due to transmitter age.

Since insertion loss is directly related to length (which explains why there are standards-based distance limitations per application), the length of any cable in your channel needs to be included in the budget. For a shorter length of cable, the loss will be less. For example, the typical loss of OM4 laser-optimized multimode cable is about 3dB/km for transmission at the 850nm wavelength. This translates to 0.003dB per meter. So, if your cable length is 50 meters, your loss for the cable is roughly 0.15dB, while at 100 meters, your loss will be 0.3dB.

You also need to include the loss of any connections in your cabling plant. Manufacturers will provide a specification for their connectors. Note that this value is based on factory testing when mating connectors to a high-quality reference connector, so it’s important that your connectors are mated to similar quality connectors. While TIA standards specify a maximum insertion loss for connectors of 0.75dB, most manufacturers’ connectors have a typical insertion loss that ranges between 0.2 and 0.5dB.

All splices within your cable plan also need to be calculated as part of your loss budget. Multimode splices can be as low as 0.1dB, but TIA standards specify a maximum of 0.3dB. This is a good value to use when calculating loss budgets since the quality of the splice can vary based on the expertise of the technician.

How Do I Know I’m Within Budget?

First, you need to know what the maximum insertion loss is for the application you plan to run, as well as any future applications that might run over the same cabling plant. Higher bandwidth applications have more stringent loss requirements. For example, 10 Gb/s multimode (10GBASE-SR) applications have a maximum channel insertion loss of 2.9dB over 400 meters of OM4 multimode fiber, while 40 Gb/s multimode (40GBASE-SR4) applications have a maximum channel insertion loss of 1.5dB over just 150 meters of OM4. With these more stringent requirements, staying within your loss budget is more critical than ever.

Let’s look at an example. Considering 3.0dB/km fiber loss, an OM4 150-meter length of fiber will be equal to about 0.45dB. For a 10GBASE-SR application, that leaves 2.45dB (2.9dB – 0.45dB) for connectors, splices and other components. For a 40GBASE-SR4 application, that leaves just 1.05dB (1.5dB – 0.45dB). If then adding four 0.3dB connectors into the channel, your total budget for 10GBASE-SR would be 1.65dB (0.45dB + 1.2dB), which leaves plenty of headroom of 1.25dB. For a 40GBASE-SR4 application, however, the 1.65dB loss for the cable and connectors is over budget by 0.15dB. In this case, you would need to consider reducing the number of connectors in the channel or perhaps choose lower-loss 0.2dB connectors.

Further, loss budgets should always have a little wiggle room, so it’s better to be a bit conservative and leave yourself some margin—especially if you’re considering field termination or splicing, which have the potential for installation variables that cause loss such as air gaps or poor fiber core alignment. Extra margin to accommodate for reconfigurations, restorations or splice degradation within the cable plant should also be considered. It’s also important to remember that the connectors on both ends of the channel need to be included in the loss budget – when channel testing, your test reference cords will mate with those connectors to include their loss.

Each fiber application standard also specifies a distance limitation for various types of fiber. So, even if you are within the loss limits for an application, you also need to be within the length limits. You can read more about that here.

Regardless of what you come up with for your loss budget calculation, the only way to really know if you’ve stayed within budget is to test the insertion loss of the channel after installation via Tier 1 testing using an optical loss test set like Fluke Networks’ CertiFiber® Pro. And best practice to continually improve your loss budgeting is to always compare what you calculated during the design phase to your actual test results.

 

View the Versiv Configurator

Before Shakira and Jennifer Lopez take the Super Bowl Halftime Show stage, Demi Lovato kicked off Super Bowl LIV with the National Anthem. With an estimated 98 million viewers watching you sing arguably the most famous song in U.S. History, your makeup better be on point, and Demi and her glam team delivered.

Makeup artist Jill Powell used a full face of Armani Beauty products to create Lovato's natural, glowy glam. She's wearing winged-out golden shadow tinged with charcoal, her signature bold brows, and a glossy nude lip. As for hair, stylist Paul Norton gave her waist-length hair a tight, polished wave, then kept it loose and luxurious for the performance. Her black hair stood out even stronger in contrast to her sharp white suit.

Instagram content

This content can also be viewed on the site it originates from.

"The first thing we think about is the huge audience," say Powell. "Her look had to be something that would cater to everybody. We wanted to ensure it was chic, beautiful, would complement her outfit, look amazing on TV and everyone would love it." Easy job, right? With all that in mind, they decided on an "ethereal bronze-gold goddess look." They wanted the focus to be on Lovato's eyes, so she chose a golden shadow and added an espresso brown shade for smokiness.

"[Lovato] is a singer, and we wanted the focus to be on her voice, not her mouth," Powell explains. She opted for a sheer nude brown that was eye-catching without drawing focus away from her goddess-themed eye makeup and godly voice. Powell created the look with Armani Beauty Rouge d'Armani Sheer Lipstick in 205, Armani Beauty Smooth Silk Lip Pencil in 2, and Armani Beauty Ecstasy Lacquer Lip Gloss.

A performance this big is about more than just day-of glam, which is why tan artist Kristyn Pradas flew down to Miami for a Saturday night spray. "She wanted a very natural, medium tan," Pradas tells Allure. "I do a full contour for the face and body to make sure that she doesn't look completely one color." To create the look, she made a custom shade from her own Pradas Glow line using two different levels of developer.

Lovato looked glam, natural, and most importantly of all, she hit those high notes. She's wanted to do this performance for a long time — she even dug up an old tweet from 2010 that reads "one day, I'm gonna sing the National Anthem at a Super Bowl." Congrats Demi — dreams do come true, and when they do, wear a white power suit and a nude lip.

---

Now check out more moments from the Super Bowl:

• Lady Gaga Changed Her Eye Makeup Mid-Performance at the Super Bowl and It Was Everything
• The Best Beauty Moments From the Super Bowl
• Gisele Bündchen Had Custom 'Brady's Ladies' Jerseys Made for Her Squad at the Super Bowl

---

Done reading? Now watch a Rockette's entire routine:

You can follow Allure on Instagram and Twitter, or subscribe to our newsletter to stay up to date on all things beauty.

All products featured on Allure are independently selected by our editors. However, when you buy something through our retail links, we may earn an affiliate commission.

Arsenal striker Olivier Giroud captained his side for the first time last night in a FA Cup 3rd round encounter with Preston North End.

Courtesy of FA TV in the video below, the French international forward can be seen attempting to rally the troops before the second half began, with the London side heading in at the break 1-0 down.

“Show some character, show something else,” the Frenchman says.

Giroud is also very kind to the Arsenal mascot pre-match, but is a little less delighted when he is told that he has to speak to BT Sport after the final whistle…

[youtube id=”yW9NXmsWDug”]

Click Here: Colombia soccer tracksuit

Time to read: 4 min

Now that 3D printing is a more developed technology, the advantages it offers in the mechanical world are vast.

But the power of 3D printing isn’t limited to building car parts and iPhone cases. When its vast capabilities of personalization and customization are applied to the medical field, the results are continuously pushing boundaries.

From the deceptively simple to the unbelievably complicated, here’s a look at some of the most amazing advances from the past year.

1. Printing Skin

Skin is the largest organ in the body and the most commonly transplanted material. For the best deep burn recovery, skin is taken from other parts of the body. But what if the burn area is too large?

Enter researchers at the University of Toronto, who designed and built a handheld 3D skin printer that can deposit sheets of skin directly onto the burn wound itself.

The printer reads the depth of the wound and uses that information to choose the correct skin cell ‘ink’. With this method, only a tenth of the size of the whole burn needs to be taken from healthy skin for successful healing.

2. Custom Braces for Scoliosis

Treatments for chronic health problems like Scoliosis often take years, and involve bulky, uncomfortable instruments like braces. Among children and adolescents this causes low adherence to treatment guidelines, which can worsen conditions further down the road.

3D printing’s great strength is in its personalization abilities, and in the same way custom hip replacements and dental implants can be created faster and cheaper than ever before, scoliosis braces can be made to fit the patient perfectly.

More importantly, the braces can be made unobtrusive and even attractive. Young patients quizzed about treatment methods were unanimously opting for the new design over the old fashioned versions.

Making treatment options attractive to patients, especially younger ones, is a huge issue in managing chronic conditions and with 3D printing, patients can personalize their treatment even further.

3. Sterile Surgical Instruments

Health care in remote, developing and low-income areas can be hampered by lack of access to facilities, medicine and basic equipment. Surgical tools, usually made from stainless steel, are one example often out of the price range of many local hospitals.

Researchers from the University of Arizona found they could print a common piece of equipment, an Army-Navy Surgical Retractor, in 90 minutes at a fraction of the cost of the stainless steel version. The plastic version is both sterile when printed due to high temperatures in extrusion, and sterilizable through standard FDA procedure for medical devices.

Access to 3D printers, electricity and the internet would need to be improved in developing countries to realize the full benefit, but the technology opens up many possibilities.

The US Army has been taking the technology one step further and has developed a sterile surgical kit that can be printed in a single build. Supply pods equipped with printers are being sent to engineers on the front lines to better meet demand.

4. Facial Reconstruction Surgery

Facial injuries are traumatic and traditional methods of deformity correction can be more so, with limited results. This doesn’t have to be the case anymore.

A man named Stephen Power from Wales suffered a motorcycle accident that left his face sunken and asymmetrical on one side. Morriston Hospital in Swansea used CT scans to create a symmetrical model of Power’s skull and printed titanium implants to fit in the injured areas. The results of the 8 hour operation were immediate and successful, and open further doors for complicated reconstructive surgery to restore patients’ confidence.

In another story, a baby girl named Violet Petrok, born with a rare condition called Tessier facial cleft, was without a surgeon who could operate on her since the reconstructive procedure hasn’t been widely explored. By scanning and creating a 3D model of her skull, surgeons were able to practice different methods of operation and treatment before safely moving on to a successful surgery.

5. Beating Heart Cells

In addition to printing skin cells, the Wake Forest Institute of Regenerative Medicine, right at the bleeding edge of advances in bio-printing, is also working on printing other tissues, such as the heart. In theory, a tissue like skin is easy to print, as it comes in distinct layers, but other tissues like the liver, kidney, and heart react to specific environmental stimuli in a way that’s much more complicated.

Dr. Atala, who pioneers the bulk of regenerative organ research, may still be years away from producing a full-size and functional heart, but the printed cardiac cells will beat if placed in the correct environment (dependent of factors like temperature) and can also be induced to change beat patterns through electrical stimulus.

Tireless work by the people on the research front lines is constantly advancing the borders of our knowledge and technology. All these innovations were taken from the past 18 months, so with predicted exponential growth over the next year, the possibilities are endless.

Olympique de Marseille President Jacques-Henri Eyraud and Sporting Director Andoni Zubizarreta will travel to London tomorrow morning to meet with Premier League side West Ham United chiefs to agree a deal to sign Dimitri Payet.

OM have already had a bid worth around €25m rejected by the Hammers, but are seeking to find an agreement with West Ham to bring Payet back to the Ligue 1 club tomorrow, with the London outfit looking to agree a deal for around €40m.

West Ham United are already searching for a replacement for Payet, who was removed from the first team squad this week after manager Slaven Bilic insinuated that the French international had gone on strike, having sounded out Swansea’s attacking midfielder Gylfi Sigurdsson. West Ham have been quoted a €35m price for the Icelandic international.

Marseille hope to have a total agreement for the transfer of Dimitri Payet in place this time tomorrow, with the Frenchman having already finalised terms with OM over a return.

The McCourt project’s biggest day so far is arguably about to begin.

Click Here: roscommon gaa jerseys

Marseille Sporting Director Andoni Zubizarreta has met with the agents of Angers striker and Ivory Coast international Nicolas Pépé, according to L’Équipe.

The player had been heavily pursued by Lyon before Aulas opted to spend big to sign Memphis Depay from Manchester United instead.

However, two other Ligue 1 clubs are hot on the player’s heels: Marseille and Lille. No offer has been made by OM, despite a meeting between Zubizarretta and the player’s representatives.

In any case, Angers will not sell the player for less than €10m.

Click Here: cheap nrl jersey