A large audience including family members of the SBS personnel was also present along with senior naval officers including Commander of Eastern Naval Area, Rear Admiral Rohan Amarasinghe and Commanding Officer of SBS, Commander Nalinda Jayasinghe.The spectators were treated to a well-executed display of SBS combat skills, which included rig drop & insertion, arrow craft manoeuvres, mock raid on a beach hide-out, high speed recovery, anti-drowning drill, combat diving and close quarter combat, conducted at the Nicholson Cove.SBS personnel who showed excellence during training were presented with special awards in recognition of their achievements. Lieutenant HLDKLK Liyanaarachchi was adjudged the Best SBS under training and was also presented with the award for the highest aggregate marks in all subjects. Ordinary Seaman RMLN Rathnayake clinched the award for the Best Physical Fitness while Able Seaman MKK Chandima won the award for the Best Marksman.The 21st Intake underwent a rigorous training which included a 9-month basic training followed by a 6-month on the job training (OJT).[mappress]Press Release, April 22, 2014; Image: Sri Lanka Navy View post tag: Naval Authorities View post tag: holds The Insignia Awarding Ceremony of the 21st Intake of the Special Boat Squadron (SBS) was held at the SBS Headquarters in Trincomalee on the 21st of April 2014. Commander of the Sri Lanka Navy, Vice Admiral Jayanath Colombage, graced the occasion as the Chief Guest. View post tag: Awarding View post tag: Navy April 22, 2014 Back to overview,Home naval-today Sri Lanka Navy Holds Insignia Awarding Ceremony View post tag: Ceremony View post tag: News by topic View post tag: Sri View post tag: Lanka Share this article Sri Lanka Navy Holds Insignia Awarding Ceremony View post tag: Insignia
Since the discovery of human embryonic stem cells, scientists have had high hopes for their use in treating a wider variety of diseases because they are “pluripotent,” which means they are capable of differentiating into one of many cell types in the body.However, the acquisition of human embryonic stem cells from an embryo can cause the destruction of the embryo, thus raising ethical concerns. In 2006, researchers introduced an alternative to harvesting embryonic stem cells called induced pluripotent stem (iPS) cells. They provided evidence that it was possible to send a normal adult cell back to an undifferentiated, pluripotent stem cell state by introducing genetic material (“outside” DNA) into the cell, a process that alters the original state of the cell.To avoid the use of embryonic stem cells, other researchers have focused more on the use of adult stem cells, but the use of these cells is limited because, unlike embryonic stem cells that grow into any type of mature cell, adult stem cells can only grow into certain cell types.Now, researchers from Harvard-affiliated Brigham and Women’s Hospital (BWH), in collaboration with the RIKEN Center for Developmental Biology in Japan, have demonstrated that any mature adult cell (a “somatic” cell) has the potential to turn into the equivalent of an embryonic stem cell. In an article to be published in the Jan. 30 issue of Nature, researchers demonstrate, in a preclinical model, a novel and unique way that cells can be reprogrammed, a phenomenon they call stimulus-triggered acquisition of pluripotency (STAP). Importantly, this process does not require the introduction of new outside DNA, the process commonly used to induce adult cells back into a state of pluripotentency.“It may not be necessary to create an embryo to acquire embryonic stem cells. Our research findings demonstrate that creation of an autologous pluripotent stem cell — a stem cell from an individual that has the potential to be used for a therapeutic purpose without an embryo — is possible. The fate of adult cells can be drastically converted by exposing mature cells to an external stress or injury. This finding has the potential to reduce the need to utilize both embryonic stem cells and DNA-manipulated iPS cells,” said senior author Charles Vacanti, chairman of the Department of Anesthesiology, Perioperative and Pain Medicine and director of the Laboratory for Tissue Engineering and Regenerative Medicine at BWH. “This study would not have been possible without the significant international collaboration between BWH and the RIKEN Center,” he added.Researchers, drawing from the ability of a plant callus — a node of plant cells that is created by injuring an existing plant — to grow into a new plant, hypothesized that any mature adult cell, once differentiated into a specific cell type, could be de-differentiated through a natural process that does not require inserting genetic material into the cells.“Could simple injury cause mature, adult cells to turn into stem cells that could in turn develop into any cell type?” hypothesized Vacanti.Beginning with mature adult cells, researchers let them multiply. After stressing the cells almost to the point of death by exposing them to stresses including trauma, a low oxygen environment, and an acidic environment, researchers discovered that within a period of only a few days, the cells survived and recovered from the stressful stimulus by naturally reverting into a state that is equivalent to an embryonic stem cell. The stem cells created by exposure to the external stimuli were then able to redifferentiate and mature into any type of cell and grow into any type of tissue, depending on the environment into which they were placed.To examine the growth potential of these cells, researchers used mature blood cells from mice that had been genetically altered with a specific mutation to light up green under a specific wavelength of light. They stressed the cells from the blood by exposing them to an acidic environment and found that in the days following the stress, those cells reverted back to an embryonic stem cell-like state.Researchers hypothesize that these findings raise the possibility that unknown cellular functions that are activated through external stress may set mature adult cells free from their current commitment and permit them to revert to their naïve cell state.“Our findings suggest that somehow, through part of a natural repair process, mature cells turn off some of the epigenetic controls that inhibit expression of certain nuclear genes that result in differentiation,” said Vacanti, who is the Vandam/Covino Professor of Anaesthesia at Harvard Medical School.Researchers note that the next step is to explore this process in more sophisticated mammals and ultimately in humans.“If we can work out the mechanisms by which differentiation states are maintained and lost, it could open up a wide range of possibilities for new research and applications using living cells. But for me, the most interesting questions will be the ones that let us gain a deeper understanding of the basic principles at work in these phenomena,” said first author Haruko Obokata, a research fellow in anesthesiology at BWH.If this same process can be demonstrated in human cells, then someday, through a skin biopsy or blood sample, without the need for genetic manipulation, researchers may be able to create embryonic stem cells specific to each individual, which in turn could be used to create tissue without the need to insert any outside genetic material into that cell, creating endless possibilities for therapeutic options.This was adapted from a Brigham and Women’s Hospital release.
Bryce Carey raced to national IMCA Late Model rookie of the year honors this season. He is pictured with IMCA President Brett Root. (Photo by Bruce Badgley, Motorsports Photography)NASHUA, Iowa – A veteran of the IMCA Modifed and IMCA Sunoco Stock Car divisions has national rookie of the year honors to show for his first IMCA Late Model campaign.Bryce Carey of Nashua, Iowa, was a regular at Marshalltown Speedway, Independence Motor Speedway and Benton County Speedway, while starting and ending his season with Deery Brothers Summer Series outings.“I had raced three years in a Stock Car and three years in a Modified. We had been competitive and I decided it was time to go to a Late Model,” he explained. “I think the Late Model is a premier division, one of the better classes you can be in in dirt track racing.”Carey bought a 2013 Wallybilt from Curt Martin, benefitting from the expertise of the former national and Deery champion, the chassis builder and house driver Ben Seemann.“When we struggled with setup, those guys helped us make the changes,” he said. “The biggest part of the learning curve was having the spoiler and the wider tires. Late Models seem longer in front so being able to see out of the cockpit different.”The nephew of long-time driver LaVern Carey, he had a couple other experts in his corner.“I work for Corey Dripps, who is one of the best Modified drivers around, and he has shared a lot of setup advice,” Carey said. “And Andy Eckrich at Precision Performance has helped a lot with suspension. We’ve learned a lot from them, too.”He got some unexpected and unwelcome time off mid-season but still scored the rookie of the year award.“We were running for rookie of the year but had to sit out almost a month and a half (July 2 to Aug. 11) because of motor problems,” Carey said. “It was nice when we got those fixed. There were definitely some anxious moments as the rookie points got closer.”Starts-26Wins-0Top Fives-1 HIS CREW: Father Ron and brothers Nick and Tyler. HIS SPONSORS: Wallybilt Race Cars of Waterloo; Scott Olson and Wide Open Race Engines of Blairsburg; and BSB Manufacturing of Wellington, Kan.