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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 19 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2014

Nuclear Data Sheets for A = 54

The 2005 evaluation for A=54 (2006Hu08) has been updated. Detailed experimental nuclear structure data and decay data for all nuclei with mass chain A=54 are presented in this current evaluation. The new data and information are given in following datasets: {sup 54}Ca: {sup 9}Be({sup 76}Ge, X) and Be({sup 55}Sc, p), ({sup 56}Ti, 2p) {sup 54}Sc: {sup 54}Ca β{sup −} decay and {sup 54}Sc IT decay {sup 54}Ti: {sup 54}Sc β{sup −} decay {sup 54}Cr: {sup 54}Mn ε decay, {sup 56}Fe(μ, nupng), and {sup 238}U({sup 64}Ni, Xγ) {sup 54}Mn: {sup 51}V({sup 20}Ne, Xγ), {sup 55}Mn(p, pn), and {sup 56}Fe(μ, nu2ng) {sup 54}Fe: {sup 58}Ni α decay, {sup 9}Be({sup 55}Co, Xγ), {sup 54}Fe(e, e'), {sup 54}Fe(p, p'), and Coulomb Excitation {sup 54}Co: {sup 54}Ni ε decay, {sup 55}Cu εp decay, {sup 28}Si({sup 32}S, αpnγ), {sup 54}Fe(p,n), and {sup 54}Fe({sup 3}He, t) {sup 54}Ni: {sup 54}Ni IT decay, {sup 55}Zn εp decay, {sup 9}Be({sup 55}Ni, Xγ), and {sup 24}Mg({sup 32}S, Xγ) {sup 54}Zn: Ni({sup 58}Ni, X)

73 NUCLEAR PHYSICS AND RADIATION PHYSICS↗
DOE OSTI2015

Isotope anomalies in the FE-group elements in meteorites and connections to nucleosynthesis in AGB stars

We study the effects of neutron captures in AGB stars on “Fe-group” elements, with an emphasis on Cr, Fe, and Ni. These elements show anomalies in {sup 54}Cr, {sup 58}Fe, and {sup 64}Ni in solar system materials, which are commonly attributed to supernovae (SNe). However, as large fractions of the interstellar medium (ISM) were reprocessed in AGB stars, these elements were reprocessed, too. We calculate the effects of such reprocessing on Cr, Fe, and Ni through 1.5 M{sub ⊙} and 3 M{sub ⊙} AGB models, adopting solar and 1/3 solar metallicities. All cases produce excesses of {sup 54}Cr, {sup 58}Fe, and {sup 64}Ni, while the other isotopes are little altered; hence, the observations may be explained by AGB processing. The results are robust and not dependent on the detailed initial isotopic composition. Consequences for other “Fe group” elements are then explored. They include {sup 50}Ti excesses and some production of {sup 46,47,49}Ti. In many circumstellar condensates, Ti quantitatively reflects these effects of AGB neutron captures. Scatter in the data results from small variations (granularity) in the isotopic composition of the local ISM. For Si, the main effects are instead due to variations in the local ISM from different SN sources. The problem of Ca is discussed, particularly with regard to {sup 48}Ca. The measured data are usually represented assuming terrestrial values for {sup 42}Ca/{sup 44}Ca. Materials processed in AGB stars or sources with variable initial {sup 42}Ca/{sup 44}Ca ratios can give apparent {sup 48}Ca excesses/deficiencies, attributed to SNe. The broader issue of galactic chemical evolution is also discussed in view of the isotopic granularity in the ISM.

79 ASTRONOMY AND ASTROPHYSICS↗
DOE OSTI2014

Cross-sections for (p,x) reactions on natural chromium for the production of 52,52m,54 Mn radioisotopes

The production of positron-emitting isotopes of manganese is potentially important for developing contrast agents for dual-modality positron emission tomography and magnetic resonance (PET/MR) imaging, as well as for in vivo imaging of the biodistribution and toxicity of manganese. Furthermore, the decay properties of 52 Mn make it an excellent candidate for these applications, and it can easily be produced by bombardment of a chromium target with protons or deuterons from a low-energy biomedical cyclotron. There are several parameters essential to this mode of production—target thickness, beam energy, beam current, and bombardment time—depend heavily on the availability of reliable, reproducible cross-section data. Our paper contributes to the routine production of 52g Mn for biomedical research by contributing experimental cross-sections for natural chromium ( nat Cr) targets for the nat Cr(p,x) 52g Mn reaction, as well as for the production of the radiocontaminants 52m, 54 Mn.

07 ISOTOPE AND RADIATION SOURCES↗
DOE OSTI2015

Serratia marcescens quorum sensing dependent biofilm formation - 15724

Heavy metals are harmful and they cannot be biodegraded easily. Due to the research, development and production of nuclear weapons at Savannah River Site (SRS), a number of areas at this site are contaminated with heavy metals. This pilot research project supports the environmental remediation efforts at SRS. S. marcescens reduces the heavy metal chromium (VI) to the less toxic chromium (III). S. marcescens biofilm formation can prevent bacterial movement through contaminated soils. This research is focused on in these mutants will be identified. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2020

Emerging Contaminants: Identification, Life Cycle, and Key Challenges - 20415

The term 'emerging contaminants' and its multiple variants has come to refer to previously overlooked compounds discovered in the environment which represent a potential threat to human and ecological receptors. These compounds may be discovered in the environment as new analytical techniques are developed and/or as new monitoring programs for drinking water and groundwater are implemented, while the threat to receptors may be realized through advances in understanding of toxicology and pathways to receptors. Emerging contaminants present unique and considerable challenges as demands to address them can outpace the understanding of their toxicity, their need for regulation, their occurrence, and techniques for treating the environmental media they affect. With these challenges in mind, this paper serves as a primer for understanding emerging contaminants. The paper will lay a foundation for understanding emerging contaminants through three key topics: 1. Who identifies emerging contaminants? An overview of the various stakeholder groups around the world working on identifying potential emerging contaminants and developing systems for screening potential candidates, prioritizing, and ultimately generating regulations will be provided. 2. How Chemicals Rise into Awareness as Emerging Contaminants. The process by which contaminants emerge through a cycle of awareness, characterization, management and regulation will be discussed. Current emerging contaminants will be discussed in the context of the life cycle: emerging contaminants where impacts to drinking water supplies are driving public awareness (e.g. per and polyfuoroalkyl substances (PFASs) and 1,4-dioxane), emerging contaminants impacted by changing regulatory standards or development and debate on toxicity (e.g., hexavalent chromium, 1,2,3-trichloropropane, trichloroethylene in vapor intrusion), and those with evolving understanding of impacts and usage (e.g., microplastics). 3. Key Challenges. Unique challenges associated with emerging contaminants, including visibility and public sensitivity, uncertainty and vulnerability, will be discussed. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Cr{sup 6+} sensitivity of Pseudomonas fluorescens transposon mutants - 15725

Bacteria have evolved systems for heavy metal resistance and reduction that can be exploited for bioremediation. This pilot research project looks at the reduction of chromium present at DOE's Savannah River Site and the ability of the bacterial population to aid in the reduction of heavy metals. The research goal was to determine the genes responsible for chromium resistance in a Pseudomonas fluorescens Pf5 isolate capable of Cr(VI) reduction using transposon mutagenesis. P. fluorescens was mated with Escherichia coli containing pTnModRKm' which has a mini-Tn5 transposon. The ex-conjugates were plated on Luria Bertani agar with kanamycin. Individual colonies were then replica plated onto LB agar with 25 ppm of potassium dichromate. One mutant out of ∼8000 mutants was found to have increased sensitivity to increased sensitivity to Cr{sup 6+}. The mutant will be examined for chromium reduction and the mutated gene will be determined. (authors)

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2015

Assessment of the anti-biofilm potency of Psidium guajava on two strains of Pseudomonas fluorescens - 15726

Psidium guajava, more commonly known as Guava is an evergreen plant of the family Myrtaceae. It is a traditional plant used to treat various gastrointestinal infections such as typhoid fever, and also known to inhibit the growth of certain bacteria including Staphylococcus aureus. Pseudomonas fluorescens is an organism capable of surviving in heavy metal contaminated environment. One common type of heavy metal contaminant is Chromium(Cr), known to cause serious ecological and health problems. The most toxic and soluble form of chromium is Cr (VI) also called hexavalent chromium, while Cr (III) is less toxic. Pseudomonas fluorescens is a common bacterial strain known to not only survive in chromium contaminated soil, but is also capable of converting toxic chromium (VI) to chromium (III) due to its ability to form biofilm. The objective of this research is to investigate the effectiveness of Psidium guajava in reducing the formation of biofilm by Pseudomonas fluorescens, thereby enhancing its movement in porous media, such as soil. This pilot research project was conducted in collaboration with Savannah River National Laboratory, and investigated the remediation of chromium (VI). Static biofilm assays were conducted using methanolic and chloroform extracts of Psidium guajava. Results indicated that the extracts of Psidium guajava did reduce biofilm formation in Pseudomonas fluorescens, pf-01 strain. However, the guava extract did not have an inhibitory effect on biofilm formation in the pf-5 strain. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Total Reducing Capacity in Aquifer Minerals and Sediments: Quantifying the Potential to Attenuate Cr(VI) in Groundwater

Hexavalent chromium, Cr(VI), is present in the environment as a byproduct of industrial processes. Due to its mobility and toxicity, it is crucial to attenuate or remove Cr(VI) from the environment. The objective of this investigation was to quantify potential natural attenuation, or reduction capacity, of reactive minerals and aquifer sediments. Samples of reduced-iron containing minerals such as ilmenite, as well as Puye Formation sediments representing a contaminated aquifer in New Mexico, were reacted with chromate. The change in Cr(VI) during the reaction was used to calculate reduction capacity. This study found that minerals that contain reduced iron, such as ilmenite, have high reducing capacities. The data indicated that sample history may impact reduction capacity tests due to surface passivation. Further, this investigation identified areas for future research including: a) refining the relationships between iron content, magnetic susceptibility and reduction capacity, and b) long term kinetic testing using fresh aquifer sediments.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2014

Vitrification as an alternative to landfilling of tannery sewage sludge

Highlights: • The possibility of vitrification of tannery sewage sludge was investigated. • Glass cullet was substituted with different wastes of mineral character. • Component ratio in the processed mixtures was optimized. • Environmental safety of the acquired vitrificates was verified. • An alternative management approach of usually landfilled waste was presented. - Abstract: Due to high content of heavy metals such as chromium, tannery sewage sludge is a material which is difficult to be biologically treated as it is in the case of organic waste. Consequently, a common practice in managing tannery sewage sludge is landfilling. This poses a potential threat to both soil and water environments and it additionally generates costs of construction of landfills that meet specific environment protection requirements. Vitrification of this kind of sewage sludge with the addition of mineral wastes can represent an alternative to landfilling. The aim of this study was to investigate the possibility of obtaining an environmentally safe product by means of vitrification of tannery sewage sludge from a flotation wastewater treatment process and chemical precipitation in order to address the upcoming issue of dealing with sewage sludge from the tannery industry which will be prohibited to be landfilled in Poland after 2016. The focus was set on determining mixtures of tannery sewage sludge with additives which would result in the lowest possible heavy metal leaching levels and highest hardness rating of the products obtained from their vitrification. The plasma vitrification process was carried out for mixtures with various amounts of additives depending on the type of sewage sludge used. Only the materials of waste character were used as additives. One finding of the study was an optimum content of mineral additives in vitrified mixture of 30% v/v waste molding sands with 20% v/v carbonate flotation waste from the zinc and lead industry for the formulations with flotation sewage sludge, and 45% v/v and 5% v/v, respectively, for precipitation sewage sludge. These combinations allowed for obtaining products with negligible heavy metal leaching levels and hardness similar to commercial glass, which suggests they could be potentially used as construction aggregate substitutes. Incineration of sewage sludge before the vitrification process lead to increased hardness of the vitrificates and reduced leaching of some heavy metals.

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2018

Recovery of Chromium(III) from Tannery Wastewater by Nanoparticles and Whiskers of Chitosan

Chitosan, its nanoparticles and whiskers present an excellent capacity to complex chromium ions. However, this phenomenon is influenced by different parameters. In our search, we determined the appropriate range of pH to form chitosan–Cr(III), nanoparticles Cr(III) and whiskers–Cr(III) complex. We studied also the influence of chromium concentration and nature of chitosan-based materials on complexation process. Our main aim is approximate the optimal conditions to remove chromium(III) from tanning bath, recuperated from tannery wastewater of Marrakech in Morocco. However, the results of adsorption kinetic in tannery wastewater revealed that chitosan, its nanoparticles, whiskers and biocomposites are good sorbent of chromium as well, even if the adsorbed quantity is less compared to chromium solution. Although, according to ICP-OES analysis in this real effluent, nanoparticles are the best complexing ligand, after 24 h of contact nanoparticles can remove 70% of chromium from this tannery wastewater.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2017

E-cigarettes as a source of toxic and potentially carcinogenic metals

Background and aims: The popularity of electronic cigarette devices is growing worldwide. The health impact of e-cigarette use, however, remains unclear. E-cigarettes are marketed as a safer alternative to cigarettes. The aim of this research was the characterization and quantification of toxic metal concentrations in five, nationally popular brands of cig-a-like e-cigarettes. Methods: We analyzed the cartomizer liquid in 10 cartomizer refills for each of five brands by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). Results: All of the tested metals (cadmium, chromium, lead, manganese and nickel) were found in the e-liquids analyzed. Across all analyzed brands, mean (SD) concentrations ranged from 4.89 (0.893) to 1970 (1540) μg/L for lead, 53.9 (6.95) to 2110 (5220) μg/L for chromium and 58.7 (22.4) to 22,600 (24,400) μg/L for nickel. Manganese concentrations ranged from 28.7 (9.79) to 6910.2 (12,200) μg/L. We found marked variability in nickel and chromium concentration within and between brands, which may come from heating elements. Conclusion: Additional research is needed to evaluate whether e-cigarettes represent a relevant exposure pathway for toxic metals in users. - Highlights: • Certain brands of cig-a-like e-cigarettes contain high levels of nickel and chromium. • Cig-a-likes contain low levels of cadmium, compared to tobacco cigarettes. • Nickel and chromium in the e-liquid of cig-a-likes may come from nichrome heating coils.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2015

Model-assisted decision analyses related to a chromium plume at Los Alamos national Laboratory - 15449

?he chromium plume at Los Alamos National Laboratory is a complex contaminant-remediation site with spatial extent of several square kilometers. It is located in a regional aquifer near water-supply wells and other points of compliance. The plume originated on the ground surface and the contaminant migrated along complex pathways through a thick vadose zone (∼300 m) that includes intermediate lateral zones of saturation and vertical preferential flow paths. Here we discuss the development of a modeling computational framework for the site. The framework work incorporates data assimilation and model-results analysis tools including decision support techniques. The decision tools are demonstrated using synthetic problems consistent with the interpretation of existing site data and site modeling results. The analyses aim at robust and efficient environmental management of the plume and explore a series of alternative remedial options. The remedial options include natural attenuation (NA), enhanced attenuation (EA), contaminant source removal (in the vadose zone), contaminant extraction (in the regional aquifer at the plume centroid and peripheries), biogeochemical remediation (injection of fluids stimulating growth of organisms in the aquifer impacting chromium concentrations), as wells as hydraulic controls on the groundwater flow and transport in the vadose zone and the regional aquifer. The applied model analyses and decision-support algorithms are implemented in code MADS (Model Analyses for Decision Support; http://mads.lanl.gov). MADS is an open-source framework for model-based decision support employing system and physics simulation models. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Resistance and reduction potential of serratia marcescens in hexavalent chromium - 15721

Heavy metal pollution due to legacy waste from the Cold War nuclear proliferation remains a huge problem at federal and industrial sites. Microbial bioremediation is a cost effective method for removing heavy metals from soil and groundwater. This pilot research project looks at the reduction of chromium present at DOE's Savannah River Site and the ability of bacteria population to aid in the reduction of heavy metals. The purpose of this study was to characterize the growth pattern of Serratia marcescens strain 93-1399-1 in the presence of heavy metal hexavalent chromium (Cr [VI]) and its ability to convert Cr (VI) to the less toxic Cr (III). When S. marcescens was grown on LB agar with increasing concentrations of Cr (VI) as potassium dichromate, the bacteria survived at all concentrations tested up to 200 ppm. Growth curve of S. marcescens in Cr (VI) showed that the bacteria exposed to 25 pm grew in similarly to bacteria without Cr (VI), had reduced exponential growth at 50 and 100 ppm and the poor growth in 200 pp after 24 hours. Plate count assays showed that the 65% of the bacteria survived in 25 ppm of Cr (VI) but only 5% survived at 50 ppm. In preliminary chromium reduction assays, S. marcescens was grown for 24 hours in 25 ppm of Cr (VI). S. marcescens reduced 60% of the Cr (VI) to Cr (III) as compared to 4% reduction in broth alone. These data suggest that the S. marcescens strain may be useful in bio-remediating Cr (VI) at contaminated sites. Future studies will focus on identifying the genes responsible for Cr (VI) reduction. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2019

Sources and Assessment of Mercury and Other Heavy Metal Contamination in Soils Surrounding the Wuda Underground Coal Fire Area, Inner Mongolia, China

Concentrations of mercury and other heavy metals were measured in soils surrounding the Wuda Coalfield, Inner Mongolia where underground coal fires are regarded as an important contamination source. Soil samples at the downwind direction were nearly all enriched mercury in surface layers, with their concentrations ~ 10 times higher than those from upwind soils. Mercury concentrations generally increased along soil profiles upward, indicative of increasing atmospheric mercury deposition in recent decades. We suggest that underground coal fire emissions were the potential mercury contamination source and the key factor controlling mercury enrichment in soils. Other heavy metals showed no clear spatial and vertical trends, suggesting that underground coal fire emissions may not the main factor for their enrichment in soils. Antimony showed the highest enrichment followed by tin, while chromium, mercury and cadmium only exhibited slight enrichment. Risk evaluation indicated that heavy metals in the studied soils pose no ecological threats.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2015

Using Salmon as a Bio-indicator of the Health of the Columbia River at Hanford - 15534

Assessing human, ecological, and cultural health and well-being on- and off-site is an important aspect of managing legacy wastes and environmental remediation on U.S. Department of Energy sites. Such an assessment is especially important at places such as Hanford because the Columbia River runs through the site. The Columbia River is central to the culture and economy of the northwest, especially to the Tribes. While a full range of other bio-indicators are used to determine the health of the river with respect to contaminants, salmon are the iconic, keystone species in the Columbia River of concern to the full range of regulators, managers, Tribes, and the public. A bio-monitoring plan that will assure the public and others that the activities of DOE are not adversely impacting the salmon populations in the Columbia River is critical for long term stewardship, both of the Hanford Site and the River and its resources Numerous factors affect salmon populations, including different life stages, habitat variables, and anthropogenic effects, including hexavalent chromium. Based on a literature review of the factors affecting populations, a conceptual model was developed for effects on salmon population stability. Salmon have a life history that includes laying eggs in gravel (redds) at the river bottom and then spending several life stages in fresh water and maturing in saltwater before they return to their natal streams or rivers to breed. All of these phases are potentially vulnerable to a range of natural and anthropogenic factors. Eggs in redds in the river bottom are vulnerable to water erosion, dewatering, oxygen levels, predators, and contaminants, while juveniles (fry, parr, smolts) are vulnerable to water currents, oxygen levels, predators, contaminants, and negotiating dams. When adults return to the river up to 7 years later, they face these same factors, as well as intense fishing pressures. The major factor affecting salmon populations may well be the fight to swim upstream, around dams, to reach traditional spawning grounds. While the data provided in this study relate to salmon at Hanford, the overall conceptual framework provides a paradigm for evaluating other sensitive indicators at other Department of Energy sites. The framework provides a method to insure the Tribes and public that the health and well-being of an important economic, cultural, and aesthetic species is being adequately addressed, and suggests the types of data needed to address the issue. (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2015

Hexavalent chromium sensor for real-time In situ measurement of ground water contamination - 15433

Hexavalent chromium (Cr{sup 6+}) is a contaminant of concern at multiple Department of Energy (DOE) and industrial sites across the United States. It is used in stainless steel production, textile dyes, tanning, wood preservation, and in conversion coatings. It was used at DOE sites, such as the Hanford Nuclear Reservation in Washington state, in the form sodium dichromate (Na{sub 2}Cr{sub 2}O{sub 7}) to inhibit corrosion. This has resulted in the release of chromate (CrO{sub 4}{sup 2-}) to groundwater. Chromate is anionic and is readily transported with ground water through the subsurface to receptors such as river biota at Hanford, and in some regions to potable water wells. To improve Cr{sup 6+} groundwater plume monitoring while reducing monitoring cost, a cable-deployed, submersible sensor was developed for direct measurements of Cr{sup 6+} in natural groundwater. With a diameter of 3.8 cm (1.5 inch) the sensor could be deployed in 5 cm (2 inch) diameter screened wells. The sensor uses ultra violet (UV) photo-spectroscopy to measure Cr{sup 6+} at concentrations as low as 5 to 10 μg L{sup -1} (as hexavalent chromium, Cr{sup +6}) in natural water. Turbidity, caused by colloidal material suspended in natural water, can interfere with the chromate measurement but was automatically compensated within the instrument. Because the instrument had some temperature sensitivity, a correction was also applied based on in situ temperature measurements in the sensor. The sensor has been tested in the laboratory and was deployed to the field with encouraging results. Laboratory calibrations consistently yielded concentration measurements that correlate well with standard analytical methods (r{sup 2} = 0.99). (authors)

12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE W↗
DOE OSTI2016

Environmental exposure to arsenic and chromium in children is associated with kidney injury molecule-1

Environmental hazards from natural or anthropological sources are widespread, especially in the north-central region of Mexico. Children represent a susceptible population due to their unique routes of exposure and special vulnerabilities. In this study we evaluated the association of exposure to environmental kidney toxicants with kidney injury biomarkers in children living in San Luis Potosi (SLP), Mexico. A cross-sectional study was conducted with 83 children (5–12 years of age) residents of Villa de Reyes, SLP. Exposure to arsenic, cadmium, chromium, fluoride and lead was assessed in urine, blood and drinking water samples. Almost all tap and well water samples had levels of arsenic (81.5%) and fluoride (100%) above the permissible levels recommended by the World Health Organization. Mean urine arsenic (45.6 ppb) and chromium (61.7 ppb) were higher than the biological exposure index, a reference value in occupational settings. Using multivariate adjusted models, we found a dose-dependent association between kidney injury molecule-1 (KIM-1) across chromium exposure tertiles [(T1: reference, T2: 467 pg/mL; T3: 615 pg/mL) (p-trend=0.001)]. Chromium upper tertile was also associated with higher urinary miR-200c (500 copies/μl) and miR-423 (189 copies/μL). Arsenic upper tertile was also associated with higher urinary KIM-1 (372 pg/mL). Other kidney injury/functional biomarkers such as serum creatinine, glomerular filtration rate, albuminuria, neutrophil gelatinase-associated lipocalin and miR-21 did not show any association with arsenic, chromium or any of the other toxicants evaluated. We conclude that KIM-1 might serve as a sensitive biomarker to screen children for kidney damage induced by environmental toxic agents. - Highlights: • Children living in Mexico had exceedingly high arsenic and chromium exposure. • Arsenic and chromium exposure was significantly associated with urinary KIM-1. • KIM-1 might serve as a sensitive biomarker to evaluate kidney injury in children.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2015

Genome Sequence of a Chromium-Reducing Strain, Bacillus cereus S612

We report here the genome sequence of an effective chromium-reducing bacterium, Bacillus cereus strain S612. We found that the size of the draft genome sequence is approximately 5.4 Mb, with a G+C content of 35%, and it is predicted to contain 5,450 protein-coding genes.

54 ENVIRONMENTAL SCIENCES↗