9 May
2021

Microbial colonization processes in Antarctic fellfield soil – an experimental overview

first_imgThe process of colonization of Antarctic fellfield soils by micro- organisms has two phases: Firstly, the immigration, survival and establishment of microbial propagules thenlselves, and secondly the stabilization of the soil for subsequent colonization and establishment by mosses, lichens and invertebrates. Dominant amongst primary microbial colonizers are the phototrophic cyano- bacteria and algae. Not only do they introduce organic nutrients into the micro- habitat but they also have a structural function. Filaments of several dimensions frequently form a mesh over the surface of the soil. This mesh often has a canopy structure of fine filaments closely admixed with the mineral soil grains, overlain by a layer of broader, longer filaments. This structure may provide a rich grazing zone for micro-invertebrates such as protozoa and nematodes. Microbial filaments, clusters and unicells frequently have mucilaginous sheaths or capsules which may cement mineral grains together and improve soil crust stability. The combination of filaments and mucigel promotes the formation of microbial “rafts” which are dispersed by wind or water. The diverse microbiota of these compound propa- gules is likely to improve their chances of successful colonization of unpopulated soil surfaces. Phototrophic microbes can be distinguished in mixed natural com- munities of undisturbed soil crusts by selective filtration of their autofluorescence spectra. Heterotrophs can be distinguished after staining. The population can be selectively quantified by television image analysis (TVIA) using criteria of pig- mentation, size and morphology.last_img read more

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19 Oct
2020

Government to complete hospital holding company establishment by December

first_imgUpon the completion, Erick said the ministry would be open to taking Pertamedika public so that the company could find strategic partners to help expand the holding company’s business.“The partnership must also create an added value for state-owned companies,” he said, expressing hope that the holding company could provide adequate health security for all Indonesians in the future.“Right now, about 58 percent of our population is at their productive age but 20 to 30 years from now they will grow old, so we need to prepare to provide appropriate health security from now,” he said. “After the establishment, total revenue could increase to Rp 8 trillion,” Erick told the press in Jakarta, adding that the holding company would control 25 percent of the hospital market share in the country.Other than creating growth in the hospital business, the hospital holding company will allow state-owned firms to focus on their core business, he said.Currently, several state-run firms such as energy holding firm Pertamina, ship operator PT Pelayaran Nasional Indonesia (Pelni) and steelmaker PT Krakatau Steel have their own hospital subsidiaries.The first phase of the holding company’s establishment, which will merge Pertamedika with Pelni’s hospital subsidiaries, is expected to be completed in June. The action will continue with other state-owned firms’ hospitals afterward. Topics :center_img The State-Owned Enterprises (SOEs) Ministry is set to complete the establishment of a hospital holding company by December.Minister Erick Thohir said on Monday that the holding company would be led by Pertamina’s subsidiary, PT Pertamina Bina Medika (Pertamedika IHC), and would gather 63 state-owned hospital companies.He said the holding company would eventually have 6,500 beds with an estimated revenue of Rp 5.6 trillion (US$407.6 million) and earnings before interest, tax, depreciation and amortization (EBITDA) of Rp 510 billion.last_img read more

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17 Sep
2020

Syracuse ice hockey head coach Flanagan shares past with Clarkson coaches

first_img Facebook Twitter Google+ When Paul Flanagan became the first head coach in Syracuse women’s ice hockey history in 2008, he knew exactly who he wanted to help him build the program. The head coach asked Clarkson assistant coaches Matt and Shannon Desrosiers, who both played for him at St. Lawrence, to join his staff. The Desrosiers were intrigued and came to Syracuse to tour the athletic facilities. That same day, Clarkson head coach Rick Seeley took the same position at Quinnipiac, and the Desrosiers were offered and accepted the head coaching job at Clarkson, becoming the first husband-and-wife co-head coaches in college hockey history. And Flanagan was back to square one. ‘I remember when Shannon told me that they got offered the job at Clarkson, I couldn’t have been happier for them,’ Flanagan said. ‘I was disappointed for me because I thought I had two assistants, and then all of a sudden I was by myself.’ The Desrosiers returned to Syracuse with their Clarkson team and beat Flanagan and the Orange Friday. The two teams will meet again this Friday in Potsdam, N.Y., at 3 p.m. The matchup serves as a reminder of that whirlwind weekend and the bond the coaches share.AdvertisementThis is placeholder text For the Desrosiers, the opportunity at Clarkson was too good to pass up. It was an opportunity five years in the making that started with Flanagan. Shannon Desrosiers — then Shannon Smith — was in the spring semester of her senior year at St. Lawrence in 2003, but she still didn’t know what she was going to do after graduation. Flanagan helped her land an assistant coaching job. ‘He was the one that got me set up,’ she said. ‘He knew Clarkson was setting up a program, so he actually set me up with an interview with (then-Clarkson head coach) Rick (Seeley) after one of our practices one day. I definitely credit him with that.’ The two shared a special relationship that began when Flanagan took over the St. Lawrence women’s program in 1999. Shannon was his first recruit. She was the team captain and tied for the team lead in points her senior year. Flanagan said he knew she would coach one day, and the brand new Clarkson program was an ideal situation for her to break into the business. ‘I thought she’d be a perfect role model for their young women on their team,’ Flanagan said. ‘I think she was destined to get into it.’ Flanagan said he never thought Matt Desrosiers would end up coaching, though. Matt was an All-American defender at St. Lawrence who went on to play professionally for five years before joining Shannon as an assistant at Clarkson in 2006. Matt played his first two seasons under Flanagan when he was an assistant with the men’s program and said Flanagan mentored him early in his college career. ‘He definitely helped me transition into the college game,’ Matt said. ‘He showed me the ropes a little bit on what it took conditioning-wise, what it took to play at the college level.’ The Desrosiers said their coaching style is a hybrid of ideas from various coaches they played for. Flanagan’s influence can be seen in his former players’ program. Shannon said his recruiting ability impressed her. Matt said his work ethic and competitive nature was contagious. ‘Whenever we did workouts or whenever we had to do like a bike test, he was on the bike right next to us, doing it with us,’ Matt said. ‘He made it a competition. … He’d come in and say, ‘Well, I got this on the bike test, see if you can beat it.” The Desrosiers said they challenge their players in the same way in drills and conditioning. Their philosophies have worked through two seasons at Clarkson. The program emerged as a national power last year and qualified for the NCAA Tournament for the first time. This year the Clarkson-Syracuse series provided another highlight for the coaches. The Desrosiers said it’s exciting to face their former coach, but it’s also a different experience. ‘It’s always bittersweet to play against him,’ Shannon said. ‘He’s just someone we respect a lot.’ Flanagan shares that respect for the Desrosiers. He is proud to see his former players leading their own program. ‘It’s pretty neat to see that they’re doing well,’ Flanagan said. ‘I wish them the best, except when they’re playing us.’ [email protected] Commentscenter_img Published on November 10, 2010 at 12:00 pm Contact Ryne: [email protected]last_img read more

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