Chlorophenols are a group of chemicals in which chlorines (between one and five) have been added to phenol.� Phenol is an aromatic compound derived from benzene, the simplest aromatic hydrocarbon, by adding a hydroxy group to a carbon� to replace a hydrogen.� There are five basic types of chlorophenols:� mono[one]chlorophenols, di[two]chlorophenols, tri[three]chlorophenols, tetra[four]chlorophenols, and penta[five]chlorophenols.� In all, there are 19 different chlorophenols.� Eight are discussed in this document:� 2-chlorophenol, 4-chlorophenol, 2,4-dichlorophenol, 2,4,5-trichlorophenol, 2,4,6-trichlorophenol, 2,3,4,5-tetrachlorophenol, 2,3,4,6-tetrachlorophenol, and 2,3,5,6-tetrachlorophenol.� Pentachlorophenol is discussed in another document.
VIANA, Ana Maria and MANTELL, Sinclair Hugh. Comparative uptake and metabolism of 2-[14C]-2,4-dichlorophenoxyacetic acid in callus cultures of monocot (Dioscorea spp.) and dicot (Nicotiana tabacum L.) plants. Rev. bras. Bot. [online]. 1998, vol.21, n.1, pp.89-99. ISSN 0100-8404. http://dx.doi.org/10.1590/S0100-84041998000100009.. (Comparative uptake and metabolism of 2-[14C]-2,4-dichlorophenoxyacetic acid in callus cultures of monocot (Dioscorea spp.) and dicot (Nicotiana tabacum L.) plants). The uptake and metabolism of 2-[14C]-2,4-dichlorophenoxyacetic acid (2,4-D) were investigated in leaf calluses of Nicotiana tabacum, tuber calluses of Dioscorea opposita and calluses derived from zygotic embryos, leaves and petioles of Dioscorea composita. Striking similarities were evident in the patterns of 2,4-D metabolites and their chemical characteristics in the three callus types of D. composita compared, but significant differences were detected among the patterns of rnetabolites in the three ...
Vietnam and Agent Orange Facts. Demand for military Agent Orange resulted in higher levels of dioxin contamination than in the 2,4,5-T produced for civilian applications in the U.S. As noted in the above chart.. The U.S. Air Force military operation Ranch Hand began spraying Agent Orange on areas of South Vietnam in August 1965 (though it was used prior to this date).. The US Air Force Herb Tapes accounted for just over 8 million gallons of the herbicides used in South Vietnam.. 18 million gallons of Agent Orange were reported to have been used in South Vietnam.. Agent Orange caused Vietnamese farmers to lose about 70% of their crops. (One of the goals for using herbicides was to deprive the enemy of food).. 6,250+ square miles of South Vietnam can not be farmed because of defoliation. This is still true more than 30 years later.. A C-123 (Provider) could dump 11,000 lbs. of Agent Orange over 300 acres in four minutes.. Brief History of Agent Orange. In the early years of WWII, a grant was ...
2,3,7,8-Tetrachlorodibenzo-p-dioxin, a toxic contaminant frequently formed during the synthesis of the herbicide 2,4,5-trichlorophenoxyacetic acid, was shown to be a potent inducer of hepatic δ-aminolevulinic acid synthetase in the chick embryo. As little as 4.66 x 10-12 mole of the contaminant per egg produces a significant increase in the activity of the enzyme. Induction of the enzyme is related to the dose of 2,3,7,8-tetrachlorodibenzo-p-dioxin and, in contrast to that produced with other drugs, is prolonged in time, with 70 percent of the maximum induced activity present 5 days after a single dose. This contaminant is implicated as the likely causative agent in an outbreak of porphyria cutanea tarda in workers in a factory where 2,4,5-trichlorophenoxyacetic acid was being synthesized. ...
Glowicz J, Crist M, Gould C, Moulton-Meissner H, Noble-Wang J, de Man TJB, Perry KA, Miller Z, Yang WC, Langille S, Ross J, Garcia B, Kim J, Epson E, Black S, Pacilli M, LiPuma JJ, Fagan R, B. cepacia Investigation Workgroup. 2018. A multistate investigation of health care-associated Burkholderia cepacia complex infections related to liquid docusate sodium contamination, January-October 2016. Am J Infect Control 46:649-655.. Brooks RB, Mitchell PK, Miller JR, Vasquez AM, Havlicek J, Lee H, Quinn M, Adams E, Baker D, Greeley R, Ross K, Daskalaki I, Walrath J, Moulton-Meissner H, Crist MB, Burkholderia cepacia Workgroup. 2018. Multistate Outbreak of Burkholderia cepacia Complex Bloodstream Infections After Exposure to Contaminated Saline Flush Syringes - United States, 2016-2017. Clin Infect Dis Off Publ Infect Dis Soc Am.. Becker SL, Berger FK, Feldner SK, Karliova I, Haber M, Mellmann A, Schäfers H-J, Gärtner B. 2018. Outbreak of Burkholderia cepacia complex infections associated with ...
Hexachlorodibenzo-p-dioxin (HCDD) is formed as a byproduct during the manufacture of certain chlorophenols and has been found in trichlorophenol, tetrachlorophenol, pentachlorophenol and in the chlorophenol-derived herbicides 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T). From 1967 to 1970, the concentration of HCDD in commercial pentachlorophenol ranged from 0.03 to 38 ppm. Since then, HCDD levels in pentachlorophenol have been reduced to less than 1 ppm.. A bioassay of a mixture of 1,2,3,6,7,8-and 1,2,3,7,8,9-hexachlorodibenzo-p-dioxins (HCDD) for possible carcinogenicity was conducted by dermal application of a suspension of this substance to Swiss-Webster mice.. HCDD (0.01 µg) suspended in 0.1 ml acetone was applied to the backs of 30 mice of each sex 3 days per week for 104 weeks. During the first 16 weeks, doses were 0.005 µg HCDD per application. An additional 30 mice of each sex were pretreated with one application of 50 µg DMBA in 0.1 ml ...
for Prostate Cancer December 7 2011 Vietnam Veterans of America to Hold Agent Orange Town Hall November 5th at Penn State Beaver Campus November 4 2011 Vietnam Veterans of America Joins Over 200 Organizations in Urging Congress to Reject Changes to Medicare Part D Program November 3 2011 Vietnam Veterans of America Board of Directors Approves VetProWeb for VVA s Service Officer Program August 29 2011 Fred Elliott to Serve As National Vice President of Vietnam Veterans of America August 23 2011 Dr Wayne Reynolds to Serve As National Treasurer of Vietnam Veterans of America August 23 2011 John Rowan to Serve Fourth Term As National President of Vietnam Veterans of America August 22 2011 VVA Praises Historic Settlement For Veterans Discharged with PTSD August 3 2011 Philanthropist Kenneth Fisher to Receive Award at the Vietnam Veterans of America 15th National Convention August 10 2011 Union Leader Cecil Roberts to Receive Award at the Vietnam Veterans of America 15th National Convention August 8 ...
Burkholderia cepacia complex bacteria are opportunistic pathogens that cause respiratory tract infections in susceptible patients, mainly people with cystic fibrosis. There is convincing evidence that B. cepacia complex bacteria can form biofilms, not only on abiotic surfaces (e.g., glass and plastics), but also on biotic surfaces such as epithelial cells, leading to the suggestion that biofilm formation plays a key role in persistent infection of cystic fibrosis lungs. This article presents an overview of the molecular mechanisms involved in B. cepacia complex biofilm formation, the increased resistance of sessile B. cepacia complex cells and the role of quorum sensing in B. cepacia complex biofilm formation.
Arthrobacter chlorophenolicus ATCC ® 700700D-5™ Designation: Genomic DNA from Arthrobacter chlorophenolicus strain A6 TypeStrain=True Application:
Looking for online definition of Pseudomonas acidovorans in the Medical Dictionary? Pseudomonas acidovorans explanation free. What is Pseudomonas acidovorans? Meaning of Pseudomonas acidovorans medical term. What does Pseudomonas acidovorans mean?
Pseudomonas cichorii is a Gram-negative soil bacterium that is pathogenic to plants. It has a wide host range, and can have an important economical impact on lettuce, celery and chrysanthemum crops. P. cichorii was first isolated on endives (Cichorium endivia), from which it derives its name. It produces 6-aminopenicillanic acid. Based on 16S rRNA analysis, P. cichorii has been placed in the P. syringae group. Pseudomonas cichorii is non-host specific as it does not infect just one host. Its host range includes lettuce, pepper, celery, coffee, wheat, basil and several other host plants. Symptoms of the causal agent vary depending on the host and the area of the plant infected. In general, pseudomonas cichorii is seen to cause leaf blighting and spotting. The first appearance of symptoms involves a water soaked lesion that develops at the edge of the leaf, midvein or randomly across the leaf These lesions progressively turn black or brown and may be surrounded by yellow halos. These lesions also ...
An efficient in vitro protocol has been established for somatic embryogenesis and plantlet conversion of Korean wild ginseng (Panax ginseng Meyer). Wild-type and mutant adventitious roots derived from the ginseng produced calluses on Murashige and Skoog (MS) medium supplemented with 0.5 mg/L 2,4-dichlorophenoxyacetic acid and 0.3 mg/L kinetin; 53.3% of the explants formed callus. Embryogenic callus proliferation and somatic embryo induction occurred on MS medium containing 0.5 mg/L 2,4-dichlorophenoxyacetic acid. The induced somatic embryos further developed to maturity on MS medium with 5 mg/L gibberellic acid, and 85% of them germinated. The germinated embryos were developed to shoots and elongated on MS medium with 5 mg/L gibberellic acid. The shoots developed into plants with well-developed taproots on one-third strength Schenk and Hildebrandt basal medium supplemented with 0.25 mg/L 1-naphthaleneacetic acid. When the plants were transferred to soil, about 30% of the regenerated plants ...
A Vietnam veteran in Michigan who has trouble walking because of his exposure to Agent Orange broke down in tears Friday when he was presented with an all-terrain wheelchair that will allow him to hunt and fish, two of his favorite hobbies. ...
Pseudomonas chlororaphis is a bacterium used as a soil inoculant in agriculture and horticulture. It can act as a biocontrol agent against certain fungal plant pathogens via production of phenazine-type antibiotics. Based on 16S rRNA analysis, similar species have been placed in its group. P. chlororaphis lends its name to a subgroup within the genus Pseudomonas. The other members of the P. chlororaphis subgroup are P. aurantiaca, P. aureofaciens, P. fragi, P. lundensis, and P. taetrolens. Chin-A-Woeng TF, et al. (2000). "Root colonization by phenazine-1-carboxamide-producing bacterium Pseudomonas chlororaphis PCL1391 is essential for biocontrol of tomato foot and root rot". Mol Plant Microbe Interact. 13 (12): 1340-5. doi:10.1094/MPMI.2000.13.12.1340. PMID 11106026. Anzai; Kim, H; Park, JY; Wakabayashi, H; Oyaizu, H; et al. (Jul 2000). "Phylogenetic affiliation of the pseudomonads based on 16S rRNA sequence". Int J Syst Evol Microbiol. 50 (4): 1563-89. doi:10.1099/00207713-50-4-1563. PMID ...
Cystic fibrosis (CF) is a recessive genetic disease characterized by chronic respiratory infections and inflammation causing permanent lung damage. Recurrent infections are caused by Gram-negative antibiotic-resistant bacterial pathogens such as Pseudomonas aeruginosa, Burkholderia cepacia complex (Bcc) and the emerging pathogen genus Pandoraea. In this study, the interactions between co-colonizing CF pathogens were investigated. Both Pandoraea and Bcc elicited potent pro-inflammatory responses that were significantly greater than Ps. aeruginosa. The original aim was to examine whether combinations of pro-inflammatory pathogens would further exacerbate inflammation. In contrast, when these pathogens were colonized in the presence of Ps. aeruginosa the pro-inflammatory response was significantly decreased. Real-time PCR quantification of bacterial DNA from mixed cultures indicated that Ps. aeruginosa significantly inhibited the growth of Burkholderia multivorans, Burkholderia cenocepacia, Pandoraea
This three-day symposium was organized by the US EPA, the USAF AL/EQ, Tyndall AFB FL, and the US AFCEE Technology Transfer Division, Brooks AFB TX. Natural attenuation, the biodegradation or chemical destruction or stabilization of contaminants, can reduce contaminants to levels protective of human health and ecosystems. The symposium was intended to increase understanding of the natural attenuation process and to review methods for screening sites and making decisions to determine the feasibility of natural attenuation at chlorinated solvent-contaminated sites. The symposium obtained feedback from the regulatory and industrial communities on the appropriate application of natural attenuation and the developing protocol for natural attenuation of chlorinated organics. The symposium featured invited platform presentations covering both laboratory studies and field demonstrations conducted in support of natural attenuation at government and industry sites. The theory and principles of methods for
The performance of a fluidized bed reactor using immobilized Phanerochaete chrysosporium to remove 2,4-dichlorophenol (2,4-DCP) from aqueous solution was investigated. The contribution of lignin peroxidase (LiP) and manganese peroxidase (MnP) secreted by Phanerochaete chrysosporium to the 2,4-DCP degradation was examined. Results showed that Lip and Mnp were not essential to 2,4-DCP degradation while their presence enhanced the degradation process and reaction rate. In sequential batch experiment, the bioactivity of immobilized cells was recovered and improved during the culture and the maximum degradation rate constant of 13.95 mg (Ld)−1 could be reached. In continuous bioreactor test, the kinetic behavior of the Phanerochaete chrysosporium immobilized on loofa sponge was found to follow the Monod equation. The maximum reaction rate was 7.002 mg (Lh)−1, and the saturation constant was 26.045 mg L−1. ...
Phanerochaete chrysosporium ATCC ® 24725™ Designation: VKM F-1767 [CBS 481.73, CCRC 36200, IMI 174727, NRRL 6361, QM 9998] Application: Bacterial resistance testing adhesives Degrades 1,1-dichloro-2,2-bis(4-chlorophenyl)ethene DDE Degrades 2,4,5-trichlorophenol Degrades 2,4,5-trichlorophenoxyacetic acid 2,4,5-T Degrades 2,4,6-trichlorophenol Degrades 2,4,6-trinitrotoluene TNT Degrades 3,4-dichloroaniline Degrades Congo red Congo Red Degrades DDT Degrades acid yellow 9 Degrades aldrin Degrades amaranth Degrades atrazine Degrades azo dyes Degrades azure B Azure B Degrades benzene Degrades benzo(a)pyrene Degrades biphenyl Degrades chlordane Degrades creosote Degrades cyclonite RDX, cyclotrimethylene trinitramine Degrades dieldrin Degrades ethylbenzene Degrades fluorene Degrades heptachlor Degrades humic acid Degrades lignin Degrades lindane Degrades mirex Degrades o-chlorophenol Degrades olive-mill wastewater Degrades orange G Orange G Degrades orange II Orange II Degrades pentachlorophenol
Theres an air of torment about Cong Nguyen. The 16-year-old is among four siblings, two of whom suffer the same regular attacks of heat that mean they can never stray far from a water tank. To make matters worse, he has never been able to grow teeth or a full crop of hair; instead, clusters of wispy, thin strands sit above sunken eyes. "Some kids avoid me and laugh at me," he says from the home he shares with his brothers and parents in Bien Hoa, just outside Ho Chi Minh City ...
Addresses a Global Challenge to Sustainable Development. Advances in Biodegradation and Bioremediation of Industrial Waste examines and compiles the latest information on the industrial waste biodegradation process and provides a comprehensive review. Dedicated to reducing pollutants generated by agriculturally contaminated soil, and plastic waste from various industries, this text is a book that begs the question: Is a pollution-free environment possible? The book combines with current available data with the expert knowledge of specialists from around the world to evaluate various aspects of environmental microbiology and biotechnology. It emphasizes the role of different bioreactors for the treatment of complex industrial waste and provides specific chapters on bioreactors and membrane process integrated with biodegradation process. It also places special emphasis on phytoremediation and the role of wetland plant rhizosphere bacterial ecology and the bioremediation of complex industrial ...
ID CP000871; SV 1; circular; genomic DNA; STD; PRO; 167422 BP. XX AC CP000871; AAVB01000000-AAVB01000037; XX PR Project:PRJNA17407; XX DT 16-NOV-2007 (Rel. 93, Created) DT 12-DEC-2013 (Rel. 119, Last updated, Version 2) XX DE Burkholderia multivorans ATCC 17616 plasmid pBMUL01, complete sequence. XX KW . XX OS Burkholderia multivorans ATCC 17616 OC Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales; OC Burkholderiaceae; Burkholderia; Burkholderia cepacia complex. OG Plasmid pBMUL01 XX RN [1] RP 1-167422 RG US DOE Joint Genome Institute RA Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E., RA Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J., RA Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Tiedje J., RA Richardson P.; RT "Complete sequence of plasmid1 of Burkholderia multivorans ATCC 17616"; RL Unpublished. XX RN [2] RP 1-167422 RG US DOE Joint Genome Institute RA Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., ...
Research Corridor has published a new research study titled "Copper Azole Wood Preservatives Market - Growth, Share, Opportunities, Competitive Analysis and Forecast, 2017 - 2025". The Copper Azole Wood Preservatives market report studies current as well as future aspects of the Copper Azole Wood Preservatives Market based upon factors such as market dynamics, key ongoing trends and segmentation analysis. Apart from the above elements, the Copper Azole Wood Preservatives Market research report provides a 360-degree view of the Copper Azole Wood Preservatives industry with geographic segmentation, statistical forecast and the competitive landscape.. Browse the complete report at http://www.researchcorridor.com/copper-azole-wood-preservatives-market/. Geographically, the Copper Azole Wood Preservatives Market report comprises dedicated sections centering on the regional market revenue and trends. The Copper Azole Wood Preservatives market has been segmented on the basis of geographic regions into ...
Cometabolic biodegradation processes are potentially useful for the bioremediation of hazardous waste sites. In this study the potential application of phenol-oxidizing and nitrifying bacteria as "priming biocatalysts" was examined in the degradation of polycyclic aromatic hydrocarbons (PAHs), aryl ethers, and aromatic ethers. We observed that a phenol-oxidizing Pseudomonas strain cometabolically degrades a range of 2- and 3-ringed PAHs. A sequencing batch reactor (SBR) was used to overcome the competitive effects between two substrates and the SBR was evaluated as a alternative technology to treat mixed contaminants including phenol and PAHs. We also have demonstrated that the nitrifying bacterium Nitrosomonas europaea can cometabolically degrade a wide range polycyclic aromatic hydrocarbons (PAHs), aryl ethers and aromatic ethers including naphthalene, acenaphthene, diphenyl ether, dibenzofuran, dibenzo-p-dioxin, and anisole. Our results indicated that all the compounds are transformed by N. ...
Degradation of aromatic hydrocarbons by aerobic bacteria is generally divided into an upper pathway, which produces dihydroxylated aromatic intermediates by the action of monooxygenases, and a lower pathway, which processes these intermediates down to molecules that enter the citric acid cycle. Bacterial multicomponent monooxygenases (BMMs) are a family of enzymes divided into six distinct groups. Most bacterial genomes code for only one BMM, but a few cases (3 out of 31) of genomes coding for more than a single monooxygenase have been found. One such case is the genome of Pseudomonas stutzeri OX1, in which two different monooxygenases have been found, phenol hydroxylase (PH) and toluene/o-xylene monooxygenase (ToMO). We have already demonstrated that ToMO is an oligomeric protein whose subunits transfer electrons from NADH to oxygen, which is eventually incorporated into the aromatic substrate. However, no molecular data are available on the structure and on the mechanism of action of PH. To ...
Burkholderia species have environmental, industrial and medical significance, and are important opportunistic pathogens in individuals with cystic fibrosis (CF). Using a combination of existing and newly determined genome sequences, this study investigated prophage carriage across the species B. vietnamiensis, and also isolated spontaneously inducible prophages from a reference strain, G4. Eighty-one B. vietnamiensis genomes were bioinformatically screened for prophages using PHASTER (Phage Search Tool Enhanced Release) and prophage regions were found to comprise up to 3.4% of total genetic material. Overall, 115 intact prophages were identified and there was evidence of polylysogeny in 32 strains. A novel, inducible Mu-like phage (vB_BvM-G4P1) was isolated from B. vietnamiensis G4 that had lytic activity against strains of five Burkholderia species prevalent in CF infections, including the Boston epidemic B. dolosa strain SLC6. The cognate prophage to vB_BvM-G4P1 was identified in the lysogen genome
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Pseudomonas savastanoi is a serious pathogen of Olive, Oleander, Ash, and several other Oleaceae. Its epiphytic or endophytic presence in asymptomatic plants is crucial for the spread of Olive and Oleander knot disease, as already ascertained for P. savastanoi pv. savastanoi (Psv) on Olive and for pv. nerii (Psn) on Oleander, while no information is available for pv. fraxini (Psf) on Ash. Nothing is known yet about the distribution on the different host plants and the real host range of these pathovars in nature, although cross-infections were observed following artificial inoculations. A multiplex Real-Time PCR assay was recently developed to simultaneously and quantitatively discriminate in vitro and in planta these P. savastanoi pathovars, for routine culture confirmation and for epidemiological and diagnostical studies. Here an innovative High-Resolution Melting Analysis (HRMA)-based assay was set up to unequivocally discriminate Psv, Psn and Psf, according to several single nucleotide ...
Pentachlorophenol (PCP), a xenobiocide used to preserve lumbers, is a major environmental pollutant in North America. In spite of an expected high resistance to biodegradation, a number of aquatic and soil bacteria can degrade PCP. In this study, we cloned, expressed and purified tetrachlorobenzoquinone reductase (PcpD), the second enzyme in the PCP biodegradation pathway in Sphingobium chlorophenolicum. PcpD, present mainly as a homo-trimer, exhibited low but statistically significant activity in the reduction of tetrachlorobenzoquinone to tetrachlorohydroquinone. The optimal pH for PcpD activity was 7.0. PcpD was stimulated by tetrachlorohydroquinone at low concentrations but inhibited at high concentrations. Because of the constitutive expression and relatively high catalytic efficiency of downstream enzyme tetrachlorohydroquinone reductive dehalogenase, tetrachlorohydroquinone was unlikely to accumulate in high concentrations, suggesting that PcpD would only be stimulated by tetrachlorohydroquinone
Acute poisoning with chlorophenoxy herbicides such as 2,4-D and MCPA is reported world wide, potentially causing severe toxicity and death. Since there is no antidote for chlorophenoxy herbicides, treatments such as urinary alkalinisation have been used to increase the clearance of these poisons from the body. Although urinary alkalinisation was first trialled over 30 years ago, it is not currently used routinely for the treatment of patients with acute chlorophenoxy poisoning. This review looked for studies where this treatment had been given to poisoned patients. No studies of sufficient quality were identified and therefore routine use of this approach to treatment cannot be recommended. However, due to the poor outcomes in patients who present with severe toxicity it may have a role in addition to standard intensive care support. More research should be conducted.. ...
The bacterium Burkholderia ubonensis is commonly co-isolated from environmental specimens harbouring the melioidosis pathogen, Burkholderia pseudomallei. B. ubonensis has been reported in northern Australia and Thailand but not North America, suggesting similar geographic distribution to B. pseudomallei. Unlike most other Burkholderia cepacia complex (Bcc) species, B. ubonensis is considered non-pathogenic, although its virulence potential has not been tested. Antibiotic resistance in B. ubonensis, particularly towards drugs used to treat the most severe B. pseudomallei infections, has also been poorly characterised. This study examined the population biology of B. ubonensis, and includes the first reported isolates from the Caribbean. Phylogenomic analysis of 264 B. ubonensis genomes identified distinct clades that corresponded with geographic origin, similar to B. pseudomallei. A small proportion (4%) of strains lacked the 920kb chromosome III replicon, with discordance of presence/absence amongst
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Biological degradation of phenol by Alcaligenes faecalis with high biodegradation activity and high tolerance was investigated at 25C. Phenol could be utilized by the bacteria as the sole carbon and energy sources. The cell growth and substrate degradation of phenol as single substrates for Alcaligenes faecalis in batch cultures (shaking flasks) were investigated at different initial phenol concentrations. Phenol was observed to be an inhibitory compound. Particularly, when free cells grew on a high concentration of phenol, substrate inhibition was observed and the higher the concentration of phenol, the longer was the lag period. The lag time and whole required time for phenol biodegradation was considerably decreased by immobilized cells due to improvement of cells resistance against high Phenol concentration by cell immobilization compared to free cells. Required time for completely degrade initial phenol of 700 and 1000 ppm by free and immobilized cells is 56, 101 and 35, 72 hours ...
TY - JOUR. T1 - Alkaline textile wastewater biotreatment. T2 - A sulfate-reducing granular sludge based lab-scale study. AU - Zeng, Qian. AU - Hao, Tianwei. AU - Mackey, Hamish. AU - Wei, Li. AU - Guo, Gang. AU - Chen, Guanghao. PY - 2017/6/15. Y1 - 2017/6/15. N2 - In this study the feasibility of treating dyeing wastewater with sulfate reducing granular sludge was explored, focusing on decolorization/degradation of azo dye (Procion Red HE-7B) and the performance of microbial consortia under alkaline conditions (pH = 11). Efficiency of HE-7B degradation was influenced strongly by the chemical oxygen demand (COD) concentration which was examined in the range of 500-3000 mg/L. COD removal efficiency was reduced at high COD concentration, while specific removal rate was enhanced to 17.5 mg-COD/g VSS h−1. HE-7B removal was also improved at higher organic strength with more than 90% removal efficiency and a first-rate removal constant of 5.57 h−1 for dye degradation. Three dye-degradation ...
Two Burkholderia strains 8111 and 8201 were isolated from root nodules of Dalbergia odorifera, an endemic woody legume in southern China. Phylogenetic analysis of 16S rRNA gene and 16S-23S gene intergenic spacer (ITS) showed that these two bacterial strains were closely related to Burkholderia cepacia and they were also similar in carbon source utilization using Biolog GN2 plate tests. The DNA G+C content of strains 8111 and 8201 were 65.8 and 65.5 mol%. Inoculation tests demonstrated that both strains 8111 and 8201 formed functional root nodules in their original host D. odorifera, and significantly enhanced plant growth (as measured by plant biomass and nitrogen content), compared to the no-inoculated control plants. Sequencing of 16S rRNA gene in nodules of D. odorifera seedlings inoculated with strains 8111 and 8201 confirmed their identity. However, these two strains did not induce root nodulation in Acacia auriculiformis and Erythrophleum fordii. This implies that the nodulation capacity between
The Vietnam Veterans Memorial Fund (VVMF) will honor veterans and active-duty military personnel with the Christmas Tree Ceremony at The Wall, taking place at 10 a.m. on Monday, Dec. 20 ...
This paper reports the isolation of phenoloxidase-negative mutants of the white-rot fungus Phanerochaete chrysosporium and the results of a survey of idiophasic functions among these mutants. The mutant strains were isolated from a medium containing o-anisidine after gamma irradiation of wild-type spores and fell into four classes, divided by the manner in which they mineralized 14C-lignin wheat lignocellulose. Examples are strain LMT7, which degraded lignin at a rate similar to that of the wild type; strain LMT26, in which degradation was enhanced; strain LMT16, whose degradation rate was apparently unaffected, although the onset of lignin attack was delayed compared with that in the wild type; and strain LMT24, which was unable to evolve significant amounts of 14CO2 from the radiolabeled substrate. The mutants were not necessarily defective in other functions associated with idiophasic activities (intracellular cyclic AMP levels, sporulation, extracellular glucan production, veratryl alcohol ...
All wood preservatives must contain a fungicide that is registered with the Environmental Protection Agency. A wood preservative that is factory pressure-treated is guaranteed for life and does not require subsequent brush-on treatments. Look for a water-based product that contains a fungicide such as penta or cuprinol. For farm use, a nonpaintable preservative containing wax or creosote oil is best. In wet conditions, use a preservative that includes a water repellent. Look for a waterborne preservative containing 3-iodo-2-propynyl butyl carbamate for good, environmentally responsible protection for your exterior wood.. ...
Reductive dehalogenases are the critical enzymes for anaerobic organohalide respiration, a microbial metabolic process that has been harnessed for bioremediation efforts to resolve chlorinated solvent contamination in groundwater and is implicated in the global halogen cycle. Reductive dehalogenase sequence diversity is informative for the dechlorination potential of the site or enrichment culture. A suite of degenerate PCR primers targeting a comprehensive curated set of reductive dehalogenase genes was designed and applied to twelve DNA samples extracted from contaminated and pristine sites, as well as six enrichment cultures capable of reducing chlorinated compounds to non-toxic end-products. The amplified gene products from four environmental sites and two enrichment cultures were sequenced using Illumina HiSeq, and the reductive dehalogenase complement of each sample determined. The results indicate that the diversity of the reductive dehalogenase gene family is much deeper than is currently
Looking for online definition of Pseudomonas cepacia in the Medical Dictionary? Pseudomonas cepacia explanation free. What is Pseudomonas cepacia? Meaning of Pseudomonas cepacia medical term. What does Pseudomonas cepacia mean?
Cystic fibrosis (CF) is a genetic disease that causes build-up of thick, sticky mucus in the lungs, pancreas and other organs. As most patients with CF experience pancreatic insufficiency and some patients have CF-related liver disease, constipation, failure to thrive, abdominal pain, and distal intestinal obstruction syndrome, they require multidisciplinary care.. To help these patients acheive the best possible outcomes, Mary Abigail Garcia, M.D., (gastroenterologist) and the CF pulmonary care team developed the Cystic Fibrosis/Gastroenterology Clinic, which combines the care provided by the Cystic Fibrosis Center and our Gastroenterology division. The Cystic Fibrosis Center is a CF Foundation-accredited center, which sees children from southern California, Arizona and Mexico.. Along with gastroenterology and CF pulmonary specialists, the Cystic Fibrosis/Gastroenterology Clinic includes nutrition, social work and nursing.. The clinic is held every 3rd Thursday morning of the month. For more ...
Read chapter Appendix D: Biographies of Committee to Review the Health Effects in Vietnam Veterans of Exposure to Herbicides (Eighth Biennial Update) and ...
Addiction and alcoholism among Vietnam veterans has traditionally been very high since the conflict ended in 1975. War is extremely traumatic and often causes soldiers to develop Post Traumatic Stress Disorder or PTSD - a condition that frequently co-occurs with addiction or alcoholism. But while any war can cause a soldier or sailor to turn to drugs or alcohol in order to self-medicate their pain and stress, Vietnam veterans were subject to a hostile return when the war was over. Instead of being treated like heroes as their fathers were after World War II, Vietnam veterans were shunned, ridiculed and expelled from their customary peer groups. Additionally, these veterans found it difficult to reintegrate into a workforce that largely had no use for their military skills. Consequently, many of Americas most courageous veterans became disillusioned addicts and alcoholics with few opportunities to better their lives.. PTSD is widely considered the most common cause of addiction or alcoholism ...
LEROY W KATTERHENRY JR is honored on Panel 44E, Row 60 of the Vietnam Veterans Memorial in Washington, DC. LEROY W KATTERHENRY JR is from COLUMBUS, OH and served as a SGT in the ARMY.
As required by law, the Department of Veterans Affairs (VA) hereby gives notice that the Secretary of Veterans Affairs, under the authority of the Agent Orange Act of 1991, Public Law 102-4 (codified in relevant part at 38 U.S.C. 1116), has determined that a presumption of service connection is not warranted based on exposure to herbicides used in the Republic of Vietnam during the Vietnam Era for any of the diseases, illnesses, or health effects identified in the July 24, 2009, National Academy of Sciences (NAS) report entitled ``Veterans and Agent Orange: Update 2008 (Update 2008), except for hairy cell leukemia (HCL) and other chronic b-cell leukemias, Parkinsons disease, and ischemic heart disease. In this regard, the Secretary of Veterans Affairs determined, based upon the NAS report, that there is a positive association between exposure to herbicides and the subsequent development of HCL and other chronic b-cell leukemias, Parkinsons disease, and ischemic heart disease. The Secretary ...
TY - JOUR. T1 - OXA-46, a new class D β-lactamase of narrow substrate specificity encoded by a blaVIM-1-containing integron from a Pseudomonas aeruginosa clinical isolate. AU - Giuliani, Francesco. AU - Docquier, Jean Denis. AU - Riccio, Maria Letizia. AU - Pagani, Laura. AU - Rossolini, Gian Maria. PY - 2005/5. Y1 - 2005/5. N2 - A novel OXA-type enzyme, named OXA-46, was found to be encoded by a gene cassette inserted into a class 1 integron from a multidrug-resistant Pseudomonas aeruginosa clinical isolate. The variable region of the integron also contained a blaVIM-1 metallo-β-lactamase cassette and a duplicated aacA4 aminoglycoside acetyltransferase cassette. OXA-46 belongs to the OXA-2 lineage of class D β-lactamases. It exhibits 78% sequence identity with OXA-2 and the highest similarity (around 92% identity) with another OXA-type enzyme detected in clinical isolates of Burkholderia cepacia and in unidentified bacteria from a wastewater plant. Expression of blaOXA-46 in Escherichia coli ...
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TY - BOOK. T1 - Enhanced reductive dechlorination in clay till contaminated with chlorinated solvents. AU - Damgaard,Ida. A2 - Broholm,Mette Martina. A2 - Bjerg,Poul Løgstrup. PY - 2012. Y1 - 2012. N2 - Chlorinated solvents are among the most frequently found contaminants in groundwater. In fractured media, chlorinated ethenes and ethanes are transported downwards through preferential pathways with subsequent diffusion into the sediment matrix. Due to slow back diffusion it can serve as a long term secondary source that can leach to the underlying aquifer. As some of the chlorinated solvents and their degradation products are toxic and carcinogenic, remediation technologies applicable in low permeability settings are needed. Enhanced reductive dechlorination (ERD) has been proven efficient in high permeability aquifers and has also been applied at a number of low permeability clay till sites. This thesis presents the results of an investigation of chlorinated ethenes (and ethanes) degradation ...
Chloracne normally results from direct skin contact with chloracnegens, although ingestion and inhalation are also possible causative routes. Chloracnegens are fat-soluble, meaning they persist in the body fat for a very long period following exposure. Chloracne is a chronic inflammatory condition that results from this persistence, in combination with the toxins chemical properties. It is believed, at least from rodent models, that the toxin activates a series of receptors promoting macrophage proliferation, inducing neutrophilia and leading to a generalised inflammatory response in the skin. This process may also be augmented by induction of excess tumor necrosis factor in the blood serum. The inflammatory processes lead to the formation of keratinous plugs in skin pores, forming yellowish cysts and dark pustules. The associated pus is usually a color of green approximating that of a tennis ball. The skin lesions occur mainly in the face, but in more severe cases they involve the shoulders ...
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TY - JOUR. T1 - Burkholderia pseudomallei Antibodies in Individuals Living in Endemic Regions in Northeastern Brazil. AU - Rolim, D.B.. AU - Vilar, D.C.F.L.. AU - De Goes Cavalcanti, L.P.. AU - Freitas, C.L.B.N.. AU - Inglis, Tim. AU - Nobre Rodrigues, J.L.N.. AU - Nagao-Dias, A.T.. PY - 2011. Y1 - 2011. N2 - A seroepidemiological investigation was conducted among the population of two municipalities in Northeastern Brazil. Immunoglobulin M (IgM) and IgG antibodies to Burkholderia pseudomallei were positive in 51.27% (161 in 317 samples) and 58.49% (186), respectively. IgM titers were higher in children than in adults. On the contrary, IgG increased progressively with age. We observed a significant association between agricultural occupation and raised IgM titers (P ,0.005) and IgG titers (P ,0.001), and between construction workers and raised IgG titers (P = 0.005). Antibody IgG avidities did not correlate with age. The highest titers of antibodies (1/800) showed the highest antibody avidity ...