USA: Bluefin, NRL Round Off Long-Endurance UUV Mission

first_img View post tag: Navy View post tag: Defense View post tag: Endurance View post tag: Bluefin Bluefin Robotics, a Quincy-based provider of Unmanned Underwater Vehicles (UUVs), announced that the company, in support of the Naval Research Laboratory (NRL), has successfully completed a long-endurance UUV mission from Boston to New York totaling over 100 hours with NRL’s Reliant “Heavyweight” UUV.The multi-day mission exercised UUV autonomy methods and demonstrated the capability of a high capacity energy configuration. Further, the endurance test was designed to push the boundaries of traditional UUVs with the objective to uncover the challenges and requirements for significantly extending UUV endurance for new applications. The exercise is part of a series to support NRL’s research in UUV-based technology for the US Navy.Reliant, is an advanced version of the Bluefin-21 vehicle and, when equipped with a Low Frequency Broadband (LFBB) sonar payload, is the prototype SMCM UUV Knifefish system for the US Navy. The vehicle navigates using a fiber-optic gyro-based INS along with supplemental data from a GPS and a Doppler Velocity Log (DVL) to enable precise navigation underwater for long endurance missions. Reliant utilizes Bluefin’s modular vehicle design that enabled the team to easily remove the payload section and add additional energy sections increasing the system’s energy capacity to nearly 40 kWh of power. Configuration took place over only a few days at Bluefin’s headquarters in Quincy, Massachusetts.The team mobilized the vehicle on the Boston Harbor Cruise’s, M/V Matthew J. Hughes, and deployed it outside Boston Harbor. To optimize for endurance and range, the vehicle traveled at an average speed of 2.5 knots at 10 meters water depth, resurfacing every 20 kilometers for navigation updates over GPS. Team members on M/V Matthew J. Hughes and onshore were able to receive vehicle status information over Iridium satellite system. While the support vessel was available, it did not provide navigational updates to the UUV, leaving the system to travel completely autonomously. After 109 hours of operation and transiting over 500 kilometers through strong currents, the system successfully reached its end point in New York Harbor with 10% of its battery life remaining.The overall effort was funded by the Office of Naval Research.[mappress]Press Release, October 31, 2013; Image: Bluefin Robotics View post tag: Naval View post tag: Defence View post tag: News by topic View post tag: Mission View post tag: NRL View post tag: Long View post tag: Round Back to overview,Home naval-today USA: Bluefin, NRL Round Off Long-Endurance UUV Mission Equipment & technology Share this article View post tag: usa October 31, 2013 View post tag: UUV USA: Bluefin, NRL Round Off Long-Endurance UUV Missionlast_img read more

Study implies broader risk for vCJD in UK

first_img Ironside JW, Bishop MT, Connolly K, et al. Variant Creutzfeldt-Jakob disease: prion protein genotype analysis of positive appendix tissue samples from a retrospective prevalence study. BMJ 2006 May 20;332:1186-8 [Full text] Aug 13, 2004, CIDRAP News article “Study implies many more vCJD cases may emerge in UK” Both positive samples were found to be of the VV type, constituting the first evidence that patients from this genetic subgroup could be infected. Previous studies had detected only MM types among those infected with vCJD, except for one person who had the MV type and apparently acquired vCJD as a result of a blood transfusion. Ironside and colleagues analyzed the DNA from samples that had tested positive in earlier immunohistochemical studies of vCJD prevalence in the UK. They had examined a total of 12,674 tissue samples (11,109 appendices, 1,565 tonsils) of patients who had had surgery from 1995 to 1999. Three samples were positive for vCJD. The investigators suggest that their findings may mean that people who are infected with vCJD and have a VV type may have a prolonged incubation period, during which the disease could spread either via blood donations or from contaminated surgical instruments used on the individuals during the asymptomatic phase of the illness. Variant CJD was first identified in the UK in 1996. Some early estimates of potential deaths were as great as 136,000, but these were subsequently revised downward when additional studies detected far fewer than the number of cases expected on the basis of experimental disease modeling. Currently, the UK has 161 cases of definite and probable vCJD, with 5 additional patients who are still alive. Jun 1 Eurosurveillance Weekly report “Evidence of a new human genotype susceptible to variant variant CJD” Researchers in the UK had believed that the type of prion protein gene (PRNP) an individual carried (genotype) played a role in susceptibility to the disease. All of the previous deaths from vCJD had occurred in patients who had an MM genotype, or two copies of the M version of the prion gene (PRNP), according to the report. Individuals who carried at least one copy of the V variant of PRNP (MV or VV genotypes) were thought not to be at risk of contracting vCJD. They constitute about 58% of the British population, according to the article. Jul 22, 2004, CIDRAP News article “Another UK patient might have caught vCJD from blood” Ironside and his group had also investigated the case of the patient who developed asymptomatic vCJD infection after receiving blood from a donor who later fell ill with vCJD. The blood recipient had the MV genotype. (The recipient died of unrelated causes, but disease-associated prion protein was found on autopsy.) The report in 2004 highlighted a potential disease risk to others from blood given by donors with asymptomatic, undetected vCJD. The new study, by James W. Ironside and colleagues, has changed thinking about susceptibility to vCJD and has renewed concern about its transmission. The patient samples they analyzed had the VV version of the prion protein gene, a type previously thought to confer protection against vCJD. Although the authors caution against overinterpretation of the results, they assert that their findings may mean that virtually all United Kingdom (UK) residents are at risk for vCJD. June 12, 2006 (CIDRAP News) – More people in Britain may be at risk for contracting variant Creutzfeld-Jacob disease (vCJD) than previously thought, according to a study published in the May 20 issue of the British Medical Journal. The disease is linked to eating meat infected with bovine spongioform encephalopathy (BSE), or mad cow disease. It involves proliferation of a prion protein in the brain, producing plaques and eventually causing death. The authors write that the questions concerning transmission during asymptomatic state in vCJD emphasize the need for continued surveillance for the disorder in the UK and the need for disease modelers to assume that people of all PRNP genotypes are susceptible to vCJD. The researchers extracted DNA from two of the three positive samples; the third did not have sufficient material to obtain DNA. Polymerase chain reaction and restriction analysis was used to detect the genotype of the patients’ PRNP at codon 129. See also:last_img read more

These are the prettiest rural properties on the market right now

first_imgThe home at 2 Colchester Crt, MaudslandUpstairs on the top floor is the master bedroom with walk-in-wardrobe and ensuite plus two additional bedrooms with a shared ensuite and walk-in-wardrobes. Inside 2 Colchester Crt, MaudslandOn the same level, there is also a bedroom with an ensuite, study and triple car garage. On the lower level of the home, there is a media room, entertaining room, powder room, gym, wine cellar, laundry, sauna and covered patio which opens to the garden and family sized swimming pool. The homestead at 755 Dyraaba Rd, DyraabaOwners Peter and Robyn Clarke have lived at “Dyraaba” for almost 10 years.Mr Clarke said the couple “always had a soft spot for old houses.” The home at 2 Colchester Crt, MaudslandEnjoy a taste of the Hamptons in this stunning three-level home situated on an acre of land in Maudsland. The breathtaking property at 2 Colchester Crt has views of the surrounding hinterland, picture windows and high pitched ceilings throughout to create an elegant Hamptons style. The homestead at 755 Dyraaba Rd, DyraabaThere is also the kitchen block off the main homestead which includes an additional bedroom with ensuite, lounge and dining area and a newly established deck off the kitchen. The home at 46 Rymera Rd, SarabahThe living and kitchen space open our onto the rear patio overlooking the swimming pool and landscaped garden. The homestead at 755 Dyraaba Rd, DyraabaNow, the remaining 150 acres at 755 Dyraaba Rd, Dyraaba are home to 50 Angus and Wyagu cows and calves that graze through some 14 paddocks on the property. The home at 46 Rymera Rd, SarabahAlong with owning your own vineyard, 46 Rymera Rd also has an olive grove and basement wine cellar, the perfect place to store each year’s vintage. The homestead at 755 Dyraaba Rd, DyraabaIF you’ve ever dreamt about leaving the hustle and bustle of the big city smoke for a life in the country, now might be the time to act.Pack your RMs, we’re going rural. In Sarabah, this 50 acre estate is in a league of its own. The homestead at 755 Dyraaba Rd, DyraabaEstablished in 1840, the original homestead of Dyraaba Station was a successful cattle empire, and included more than 2000,000 acres. The homestead at 755 Dyraaba Rd, DyraabaThere are numerous outbuildings on the property that form an inner courtyard with expansive gardens full of greenery, and an old tank has been converted into a bath.The main homestead has three bedrooms, two bathrooms, and a living and dining room. The homestead at 755 Dyraaba Rd, DyraabaInside the home, there are mutiple original brick fireplaces. Inside 2 Colchester Crt, MaudslandOn the ground level, there is a double height entrance foyer, formal lounge and dining zone which is separated by a double fireplace. The homestead at 755 Dyraaba Rd, DyraabaThe self-contained stockmans cottage has two bedrooms, a bathroom and a kitchen, and the slab hut contains a single bedroom, laundry and powder room. On the property, there is also a tennis court, vegetable garden and chicken coup. The home at 46 Rymera Rd, SarabahThe home has five fireplaces, soaring ceilings and a distinctly French country style decor throughout. The home at 46 Rymera Rd, SarabahThe master suite on the ground floor is its own retreat, complete with walk-in-wardrobe, ensuite, fireplace and courtyard. More from newsParks and wildlife the new lust-haves post coronavirus20 hours agoNoosa’s best beachfront penthouse is about to hit the market20 hours agoThe home at 46 Rymera Road, SarabahLocated on the upper level are three additional bedrooms – including a second master suite – all with ensuite bathrooms and private balcony’s, along with two further living areas and rooftop terrace. Inside 755 Dyraaba Rd, DyraabaDyraaba is a part of Australian pastoral heritage and is listed for sale with Peter Douglas of Ray White, Rural Queensland, for $1.8m. The vineyard at 46 Rymera Road, SarabahThere is also a swimming pool and restaurant facilities, which has previously been “a popular venue for weekend lunches and weddings” in the area. The home at 2 Colchester Crt, MaudslandThe layout flows from the kitchen and family room through to a covered alfresco area complete with built-in BBQ and bar fridge. The home at 46 Rymera Rd, SarabahOn the ground level of the home there is an expansive entrance complete with chandelier and grand staircase, four car garage, gym, family room, kitchen, office, powder room, formal dining and living room. The cellar door and restaurant at 46 Rymera Road, SarabahThe listing describes the property as a “once in a lifetime opportunity” to own an “expansive residence, situated in an elevated position overlooking 16 acres of vineyard” and “stunning panoramic views of the surrounding countryside.”last_img read more