A new code for electrostatic simulation by numerical integration of the Vlasov and Ampere equations using MacCormack’s method

first_imgWe present anewsimulationcode for electrostatic waves in one dimension which uses the Vlasovequation to integrate the distribution function and Ampère’sequation to integrate the electric field forward in time. Previous Vlasovcodes used the Vlasov and Poisson equations. Using Ampère’sequation has two advantages. First, boundary conditions do not have to be set on the electric field. Second, it forms a logical basis for an electromagnetic code since the time integration of the electric and magnetic fields is treated in a similar way. MacCormack’smethod is used to integrate the Vlasovequation, which was found to be easy to implement and reliable. A stability analysis is presented for the MacCormack scheme applied to the Vlasovequation. Conditions for stability are more stringent than the simple Courant–Friedrich’s–Lewy (CFL) conditions for the spatial and velocity grids. We provide a simple linear function which when combined with the CFL conditions should ensure stability. Simulation results for Landau damping are in excellent agreement with numerical solutions of the linear dispersion relation for a wide range of wavelengths. The code is also able to retain phase memory as demonstrated by the recurrence effect and reproduce the effects of particle trapping. The use of Ampère’sequation enables standing and traveling waves to be produced depending on whether the current is zero or non-zero, respectively. In simulations where the initial current is non-zero and Maxwell’sequations are satisfied initially, additional standing waves may be set up, which could be important when the coupling of wave fields from a transmitter to a plasma is considered.last_img read more

Mangrove rhizosphere soils: a unique natural source of pravastatin-producing Penicillium microfungi

first_imgThe pravastatin-producing potential of rhizosphere soil microorganisms from mangrove forests has not been investigated in detail. In this study, a total of 20 Penicillium isolates were tested for pravastatin production. Six strains were able to synthesize pravastatin directly. Among these, the isolate Penicillium sp. ESF19M was the most active pravastatin producer with a yield of 28.43 mg/L. Molecular identification of this strain showed the highest homology with Penicillium citrinum.last_img

Southern Utah downs West Coast Baptist 96-53

first_img Tags: SUU Thunderbirds Basketball Associated Press FacebookTwitterLinkedInEmailCEDAR CITY, Utah (AP) — Andre Adams scored 13 points and grabbed 10 rebounds and four other Southern Utah players scored in double digits as the Thunderbirds downed West Coast Baptist 96-53 in Tuesday night’s season opener.Dwayne Morgan scored 17 points with eight boards, Cameron Oluyitan added 15 points, Josh Cornish had 12 and Harrison Butler 10 for Southern Utah, which had 23 assists in shooting 35 of 67 from the field (52 percent).After two early lead changes, Oluyitan hit a 3 and the Thunderbirds pulled away, leading 37-17 after a 17-0 run capped by Maizen Fausett’s 3, and 45-27 at halftime. Southern Utah made 8 of 17 3s in the second half and shot 14 of 32 from long distance overall (44 percent).Colin Cuniff scored 12 points with four 3s and Chez Lister added 10 points for the Eagles, members of the National Christian College Athletic Association. Written by November 6, 2018 /Sports News – Local Southern Utah downs West Coast Baptist 96-53last_img read more

Dixie State Baseball Nets Seven On All-RMAC Team; Faces Colorado-Colorado Springs In Conference Tournament

first_img FacebookTwitterLinkedInEmailST. GEORGE, Utah-Tuesday, Dixie State baseball landed seven student-athletes on the various all-Rocky Mountain Athletic Conference teams. Junior pitcher Daniel Silva has a 7-3 record and a team-best 51 strikeouts, making him the ace of the Mountain Lions’ staff. Making the first team was junior first baseman/outfielder/designated hitter Jake Engel. Freshman infielder/third baseman Tyson Fisher was named the conference’s freshman postion player of the year. All of this talent enabled the Trailblazers to earn the #3 seed in Wednesday’s RMAC conference tournament at Grand Junction, Colo. against #4 seed Colorado-Colorado Springs for an 11:00 am opening pitch. Written by Engel leads the Trailblazers in home runs with 13 while he has added 47 RBI. Hollow is Dixie State’s RBI leader with 49. Brad James Tags: All-RMAC/Brayden Bonner/Bryce Feist/Cade Spurlin/Daniel Silva/Dixie State Baseball/Evan Richards/Jack Gonzales/Jake Engel/Jayden Murray/Lane Pritchard/Matthew Clarke/Matthew McDermott/Tevita Gerber/Tyler Hollow/Tyson Fisher May 7, 2019 /Sports News – Local Dixie State Baseball Nets Seven On All-RMAC Team; Faces Colorado-Colorado Springs In Conference Tournament Additionally, senior right-handed pitcher Jayden Murray, junior right-hander Brayden Bonner, senior infielder Bryce Feist, sophomore second baseman Tyler Hollow and junior outfielder Lane Pritchard made the second team. Junior infielder Matthew Clarke leads Colorado-Colorado Springs in batting average (.385) and is followed closely by fellow junior infielder Matthew McDermott (.382) and redshirt junior infielder Jake Anderson (.380). Anderson also leads the squad in RBI with 51. Junior outfielder Evan Richards leads the Mountain Lions with 13 home runs. Junior left-hander Tevita Gerber is 3-0 on the season as well for Dixie State, giving him the best winning percentage on the staff. Murray (9-3) and sophomore left-hander Jack Gonzales (6-2) have each won 75 percent of their games for the Trailblazers on the mound this season. Murray also leads Dixie State with 82 strikeouts. The Mountain Lions come into Wednesday’s game with a record of 28-22 (20-16 in RMAC play) and as the #4 seed. Junior cather Cade Spurlin leads the 33-17 (23-13 in RMAC play) Trailblazers in batting average (.396). Fisher (.380) and Engel (.374) are closely behind him.last_img read more

Somerville u-turns on gender neutral toilets

first_imgSomerville JCR has voted to introduce gender neutral toilets, after they rejected a similar proposal last term.College officials will be asked to replace signs in the college bar which currently say ‘male’ and ‘female’. These will now read ‘gender neutral toilets with cubicles’ or ‘gender neutral toilets with urinals’.Almost 80 per cent of the JCR voted in favour of the motion in a secret ballot on Sunday.The changes will be implemented in other public areas of the college, including in the dining room, the Flora Anderson Hall, and the Vaughan building, a first year accommodation block.The vote is a change in direction for the College after a similar motion failed last term following concerns that the removal of binary toilets could create opportunities for harassment against cisgender women.Eilidh Wilson, Somerville’s LGBTQ Officer who proposed the motion, said: “For many people going to the bathroom is a thoughtless task, however, for trans, gender nonconforming and non-binary students fulfilling this basic need can be daunting, distressing, and potentially dangerous due to the potential for harassment and violence.“It is Somerville’s duty to put adequate provisions on place for the trans community to fulfil this basic need without fear or concern.”Following the passage of the motion, she told Cherwell: “It is encouraging, though not that surprising, that the members of the Somerville JCR showed overwhelming support for this motion.“I brought this issue back to the JCR so soon because I was confident that many of the concerns brought forward in the last meeting stemmed from unawareness of the experiences and needs of trans people.“This is about so much more than signage, it is about recognising the detriment of gender binary spaces and the need for change. “This is a victory for the LGBTQ community of Somerville and I hope that it will help pave the way for similar changes in other colleges.”The motion is supported by senior college officials, including Somerville President Baroness Janet Royall.Oxford University LGBTQ Society’s President, Katt Walton, attended last Sunday’s meeting. They said they were: “over the moon that the motion passed with such a huge margin.”Walton noted: “Unfortunately last term this failed, I think a lot of this had to do with ignorant perceptions about the LGBTQ+ community.“Students had brought up concerns of cisgendered women being in danger if toilets could be accessed by people of all genders.“Although concerns about harassment are always valid, the association of these concerns with gender neutral toilets and the trans community is a toxic stereotype that harks back to dangerous perceptions of trans people being sexual predators.“There is no evidence to suggest that the adoption of gender neutral toilets increases the risk of harassment or assault on cisgendered women.”“It is a step that goes towards Somerville and Oxford University being more supportive of and inclusive of our trans community.”The Flora Anderson Hall hosts college bops, and members’ concerns stemmed from the purported risk of harassment in gender neutral toilets as a result of excessive drinking.One female JCR member said: “I think especially in bops and in Terrace [the college bar], I wouldn’t feel comfortable being in a toilet with a cis man.”Somerville joins eleven other colleges, including Wadham, Balliol, St. Hugh’s, and St. John’s in changing their toilet policy. This aligns the College with the University of Oxford’s Transgender Guidance Policies.last_img read more

Commentary: The Hoosier Making Us Proud

first_imgBy Mary Beth SchneiderTheStatehouseFile.comINDIANAPOLIS—The Republican political consultant Rick Wilson wrote a book titled “Everything Trump Touches Dies.”One only needs to look at the long list of those forced out of the Trump administration, many with their reputations in tatters, to get his point.Mary Beth SchneiderNow, Washington is abuzz with talk that soon Dan Coats, the former Indiana senator who is the director of national intelligence, will join the list of ex-Trump appointees. He, though, is the exception to Wilson’s rule. Coats has only burnished his reputation by being that rare administration official who speaks truth to power, whether that truth is welcomed or believed. In fact, I can think of only one other Trump administration refugee — former UN Ambassador Niki Haley — who didn’t limp out of the executive branch.I was surprised when President Donald Trump picked Coats — not because Coats wasn’t qualified but because he was, eminently so. In an administration where cabinet members either had no or little experience with the agency they led or had experience as an industry lobbyist attacking the agency they now ran, Coats was a choice even Democrats could applaud.He’d been a member of the House of Representatives and then the Senate where he served on the intelligence committee. He was ambassador to Germany at a pivotal time in the days after the 9/11 terrorist attacks.Little wonder he was confirmed by an 85-12 vote in March 2017.It took only weeks before his first clashes with the president became public fodder when Coats reportedly told House investigators that the president wanted him to announce he’d been exonerated by the probe into Russian election interference. Coats instead issued a statement saying that it was “not appropriate for me to comment.”In July 2018, Trump shocked many as he stood in Helsinki, Finland, next to Russian leader Vladimir Putin and chose to believe Putin’s denials that Russia had interfered in the 2016 election.“My people came to me. Dan Coats came to me, and some others,” Trump said. “They said they think it’s Russia. I have President Putin. He just said it’s not Russia. I will say this: I don’t see any reason why it would be.”The next day Coats released a statement saying the intelligence community’s job was to give the president “fact-based assessments.”“We have been clear in our assessments of Russian meddling in the 2016 election and their ongoing, pervasive efforts to undermine our democracy,” he said. “And we will continue to provide unvarnished and objective intelligence in support of our national security.”Can I get an ‘Amen’?Then came Trump’s romance with the North Korean dictator. While the president literally talked of love letters with the man who kills his own family to preserve power, Coats told the Senate Intelligence Committee that North Korea remains a threat, with little likelihood of giving up nuclear weapons.There have been rumors ever since that Vice President Mike Pence, a fellow Hoosier, stopped him from resigning and that Trump was interviewing people for Coats’ job. No matter why Coats is still there, I’m glad he is.Look at this week’s news. On July 19 — almost exactly a year after Coats contradicted Trump on Russian election interference — Coats created a new position to oversee election security efforts.“Election security is an enduring challenge and a top priority” for the intelligence community, Coats said.Too bad it’s not a priority for the president and Senate Majority Leader Mitch McConnell.Wednesday, reiterating his report at a Congressional hearing, former Special Counsel Robert Mueller repeatedly stressed the danger of foreign tampering in our elections. Asked by one Republican if he thought the Russian interference in 2016 was a one-off, Mueller was clear.“Oh, this wasn’t a single attempt. They’re doing it as we sit here,” Mueller responded. “And they expect to do it in the next campaign.”Yet on that same day, McConnell blocked a bill that would require campaigns to alert law enforcement if they learn of foreign attempts to interfere in elections. And McConnell has rejected calls for the Senate to vote on legislation already passed by the House to improve election security measures.While Trump and his minions — including Rep. Devin Nunes, the California Republican who has been mentioned as a possible successor to Coats — continue to call Russian interference a hoax and witch hunt, Coats is listening to fact-based assessments and doing what he can to address them.Trump may not appreciate that.The nation should.FOOTNOTE: Mary Beth Schneider is an editor with TheStatehouseFile.com, a news site powered by Franklin College journalists.FacebookTwitterCopy LinkEmailSharelast_img read more

Expanding comfortably

first_imgStaying small has much to recommend it: better control, fewer headaches and the ability to sleep at night. But for those with stamina and ambition, expansion can bring with it a bigger income, status and perhaps the realisation of dreams.As Sandy Birnie, chairman of bakery giant Lyndale Foods says, some of it will be to do with the aspiration of the owners. “The upside is you create success and greater wealth, but if you get it wrong, it can destabilise your business,” he says.Anyone considering expansion needs to ask themselves if they have a management team with the capability to be able to expand. “It’s very different running a retail baker with half a dozen shops than going through the steps of 20, 100, and then 200,” says Birnie. “Just because you’ve got one very successful location does not mean you can replicate it somewhere else. Owner-managed businesses find it difficult to hand over to the management team to do that.”Once satisfied that you could staff a larger business, you need to understand why your retail bakery is successful in the first place, he says, then try to find a location that is similar so you can replicate it. “If you’ve got a highly profitable neighbourhood bakery you wouldn’t open that in an urban high street, because the product offering would be very different and so would the consumer.”Also, if a baker is considering opening one further outlet, there might be a temptation to open others at the same time. But this is not a good idea if the business has not got lots of surplus cash. “Most people would advocate you do it one at a time and that the next one beds down before you start the one after,” says Birnie.Those avid for expansion need to bear in mind that, on average, shops do not tend to make a profit until at least a couple of years in and the danger is that the business can run out of cash. Other considerations include rental costs, the deposit and whether there is a need to pay a premium for the desired site.COST CONSIDERATIONSConsideration should also be given to the terms of leases or freeholds. A six- to nine-month deposit is often payable for a good location – and then a premium on top if lots of people want the same premises. After that come the fit-out costs, which are a huge consideration.Birnie says there is no such thing as the best location to open a shop. Each one is different and it is the marriage of the location with what the bakery has to offer the consumer in a given area that counts. A combination of the best location in the area, but the worst product offering, or vice versa, will not work. It is the relevance of the product to the audience you are trying to attract in any location that is important. Those that get it wrong are those that think one size fits all, Bernie believes.MARKETING PERSPECTIVEKeith Joplin, managing director of retail consultant Joplins, based in Cleckheaton, West Yorkshire, says a retail baker opening a second shop should make sure the new unit is not far from the bakery or the first outlet. “They need to look at it from a marketing perspective and not just go on gut instinct.”Joplin says there is great satisfaction from success, usually measured in terms of number of properties and turnover, but it is crucial to ensure the second outlet does not drain the profits of the first one.He agrees with Birnie that staffing will be one of the major considerations. “Anyone operating an independent business will tell you that the actual running of the business is not a major problem, but employing people can be,” he says. “Someone running their own business has a passion for their customers, which is usually why they are successful as an independent shop, but when you expand, you are taking on other people. Can you find people who match your enthusiasm and standard of service?”BB Grout, an 11-strong Essex-based chain, opened its 11th shop, a freehold in Eastwood, last November. Director Giles Grout emphasises the importance of not having shops too far apart. All the shops are within a 12- to 15-minute drive of each other. Grout says successful expansion comes with experience. The new shop, which is in a secondary parade, has a lot of housing nearby, a school and a butcher, but he says it is still a gamble whether it works or not.There are few chains that have not made mistakes and BB Grout is no exception. “We opened one shop and went with it for two years, but it was not right and we made the decision to get rid of it.”The outlet did not make enough money, he explains, and it was a long distance from other shops, so it did not work logistically as the location was wrong for the type of shop. Fortunately enough, the company was able to sell on the lease fairly easily, virtually completely recovering the outlay. “But it took a lot of bottle,” Grout admits.no set formulaHobbs House Bakery, based in Chipping Sodbury (Glos), does not have a set formula when it comes to expansion. Sam Wells, director, says the firm has opened new branches as and when it has felt able to cope and when the right unit became available.Wells says the company is trying to make all the shops’ ranges similar because people like to buy the same products in each of its shops. The last store it opened, its fourth, was in Tetbury two years ago, where the last baker in town wanted to retire. Wells said it was a typically old-fashioned bakery, with a basic range at the time.”The owner was desperate not to see his bakery turn into an estate agent or an antique shop and pleaded with us to take it on. We didn’t particularly think it was the time to open another shop, but we opened it and it took off very nicely.”He says the customers took a while to adjust to a newcomer in town. “But they now think Hobbs is the best thing to happen to Tetbury in years,” he says. n—-=== Useful contacts ===Health and Safety Executive information line0845 345 0055Disability Rights Commission Helpline08457 622 633Royal Institution of Chartered Surveyors0870 333 1600—-=== Legal considerations ===National business advice service Business Link stresses the importance of understanding the legal obligations and restrictions for business premises.1) You must comply with building, fire and health and safety regulations, as you are responsible for the health and safety of employees and visitors.2) Stamp duty is payable on commercial leases and you may be liable for business rates, although in rented premises, these may be paid by the landlord.3) You must take reasonable steps to make your premises accessible to all, including the disabled.4) You must comply with the terms of any lease or licence agreement: there may be restrictions on times when deliveries are allowed or how you dispose of waste, for example.last_img read more

Carr’s warns of flour profit risks

first_imgCarr’s Milling Industries said last week that profitability in its flour business was “unsatisfactory” despite two price increases since August.In an interim management statement put out to coincide with its Annual General Meeting it said further price increases would be useful although these would be dictated by whether bakers were successful in getting further bread price increases.Despite claiming “strong trading to date” in its business overall, Carr’s said that there was a “risk to flour profits” and that the outcome for the year to 30 August 2008 would be influenced by the price of milling wheat for the month of August, which is currently difficult to predict.Group sales reached £24.6 million last year, up from £19.2m.last_img read more

Sales up for Costa

first_imgCosta Coffee has reported a “positive start” to the financial year, with sales up 28.4% in the 13 weeks to 29 May.Owner Whitbread said the coffee chain had benefitted from a “rapid expansion programme which has seen the total number of units increase year-on-year by 289 to 1,051”. Like-for-likes were up by 6%. Costa has recently signed franchise agreements for Hungary, the Czech Republic, Slovakia and Singapore. In a statement, Whitbread added: “The attractiveness of our brands to guests has been demonstrated by our good performance to date. We remain cautious, however, should the consumer environment become more challenging.” Costa is also donating its £150,000 profits from sales on 14 June to its Foundation. The money will go towards building five new schools in Costa Rica, Guatemala and Uganda.last_img read more

Tedeschi Trucks Band Welcomes Wynonna Judd In Nashville

first_imgTedeschi Trucks Band played their third of four nights this week at the Ryman Auditorium last night in Nashville, TN. Scheduled as an “Evening With” the band, Derek Trucks and Susan Tedeschi led their 12-piece powerhouse through two full sets of their signature blues-rock, mixing together an impressive mix of originals and covers. Toward the end of their set, Tedeschi Trucks Band welcomed American country singer Wynonna Judd to the stage for vocal accompaniment on their second set-closing original “Bound For Glory” and a cover of Hambone Willie Newbern‘s “Rollin’ and Tumblin” during the encore. In 2016, both Derek Trucks and Susan Tedeschi appeared on Wynonna & The Big Noise, making for an appropriate return in collaboration. Wynonna’s guest appearance made for an exciting surprise of the night, following buckets of highlights from the husband-and-wife led band.Tedeschi Trucks Band kept most of the first set original, with back-to-back favorites “Do I Look Worried” and “Don’t Know What It Means” to open the show. Following a reliable Box Tops cover of “The Letter”, the band continued with a fairly rare version of “Until You Remember” from 2011’s Revelator. Lonnie Young, Ed Young, & Lonnie Young, Jr.‘s “Chevrolet” came next, another song left out of their reliable songbook, before the band soared through three originals, “Don’t Drift Away”, “Part Of Me”, and “I Want More”. The first set closed with the Latin-infused outro jam of “Soul Sacrifice” by Santana.The second set picked back up with a newly-introduced cover of Tom Petty‘s “You Don’t Know How It Feels” into 2013’s title track of Made Up Mind. The energy continued with a classic cover of Allen Toussaint‘s “Get Out My Life, Woman” into the band’s heart-wrenching original “Midnight In Harlem”. The second set continued with four genre-spanning covers “Loving You Is Sweeter Than Ever” by Four Tops, “Color of the Blues” by George Jones, “Comin’ Home” by Delaney & Bonnie and “I Pity The Fool” by Bobby “Blue” Bland. The second set closed with a strong “Bound For Glory”, which featured the talented Wynonna Judd on vocals.The band and Wynonna returned for “Rollin’ and Tumblin”, before closing the set with an energetically-charged “Sing A Simple Song / I Want To Take You Higher” by Sly & The Family Stone. Tedeschi Trucks Band will return to the stage tonight for their final night at the Ryman Auditorium, before taking the month of March off. Head to the band’s website for a full list of upcoming dates.“Don’t Drift Away”[Video: Timothy Panovec]Setlist: Tedeschi Trucks Band | Ryman Auditorium | Nashville, TN | 3/2/18I: Do I Look Worried, Don’t Know What It Means, The Letter (The Box Tops), Until You Remember, Chevrolet (Lonnie Young, Ed Young, Lonnie Young Jr. cover), Don’t Drift Away, Part of Me, I Want More, Soul Sacrifice outro (Santana)II: You Don’t Know How It Feels (Tom Petty), Made Up Mind, Get Out My Life, Woman (Allen Toussaint), Midnight In Harlem, Loving You Is Sweeter Than Ever (Four Tops), Color of the Blues (George Jones), Comin’ Home (Delaney & Bonnie), I Pity the Fool (Bobby “Blue” Bland), Bound For Glory*E: Rollin’ and Tumblin (Hambone Willie Newbern)*, Sing a Simple Song / I Want To Take You Higher (Sly & The Family Stone)*w/ Wynonna Juddlast_img read more