960 research outputs found
Evaluation of Cellular Fibronectin Plasma Levels as a Useful Staging Tool in Different Stages of Transitional Cell Carcinoma of the Bladder and Renal Cell Carcinoma
Reliable markers for both renal cell carcinoma (RCC) and transitional cell carcinoma of the bladder (TCC) are lacking
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X-ray absorption near-edge spectroscopy of plutonium solid species.
We present XANES at the L{sub III} edge for four plutonium solid phases: Pu(III)F{sub 3}, Pu(IV)O{sub 2}, NaPu(V)O{sub 2}CO{sub 3}, and Ba{sub 3}Pu(VI)O{sub 6}. These correspond to the four important oxidation states in the process chemistry and environmental chemistry of plutonium. By a fitting method that uses an arc tangent function and gaussian curves, it was possible to reproducibly determine the edge energy and distinguish among the four oxidation states. These data demonstrate a 1.85 {+-} 0.20 eV shift per oxidation state
Co-transport-induced instability of membrane voltage in tip-growing cells
A salient feature of stationary patterns in tip-growing cells is the key role
played by the symports and antiports, membrane proteins that translocate two
ionic species at the same time. It is shown that these co-transporters
destabilize generically the membrane voltage if the two translocated ions
diffuse differently and carry a charge of opposite (same) sign for symports
(antiports). Orders of magnitude obtained for the time and lengthscale are in
agreement with experiments. A weakly nonlinear analysis characterizes the
bifurcation
Evaluation of Three New Strategies to Fight Obesity in Families
Aims. To evaluate 3 strategies to reduce weight in obese families. Research design and methods. 142 obese parents and 119 obese children kept a fat-calorie restriction diet. On top of this diet, the families were randomized in a three-factorial design to one or more of three weight-loss strategies: (1) an additional diet preferring carbohydrates having a low glycemic index (dual diet), (2) financial incentive, and (3) telemonitoring of weight and physical activity. Results. All children improved their BMI-SDS by 0.18 ± 0.25 (P < .001) independently of the weight-loss strategy. In parents, relative losses of weight (kg) were −6.4% versus −4.0% for dual diet versus calorie restriction (P = .029), −6.9% versus −3.4% for with or without financial incentive (P = .002), and −8.0% versus −4.8% for with or without telemonitoring (P = .033). The weight loss after financial incentive plus dual diet plus telemonitoring was −14.4%. Conclusions. All strategies were effective in adults, in particular when combined. Children improved their BMI-SDS regardless of the strategy
Effects of packaging on bone marrow discoloration in beef arm, rib, shoulder blade, and thoracic vertebra bones
Meat retailers have reported bone marrow
discoloration to be a problem, especially in
modified-atmosphere packages (MAP). To
evaluate causes of bone marrow discoloration
in different beef bones and packaging systems, 36 beef arm bones, ribs, shoulder blades, and thoracic vertebrae from USDA Select and Choice carcasses were obtained from a commercial abattoir, cut into 1-inch-thick sections at 4 days postmortem, and packaged into 1) polyvinyl chloride film (PVC) overwrap; 2) high-oxygen (80% O2, 20% CO2) MAP; or 3) ultra-low-oxygen (70% N2, 30% CO2) MAP. Packages were displayed under continuous fluorescent lighting for 4 days at 35.6°F. Ribs, shoulder blades, and thoracic vertebrae packaged in PVC and high-oxygen MAP developed undesirable gray or black discoloration during display. In ultra-low-oxygen MAP, mean visual-color scores were acceptable throughout display. The a* values (larger values equate to redder color) for ribs, shoulder blades, and thoracic vertebrae decreased (P<0.05) over time. Arm-bone marrow had less oxidation and dramatically less total iron and hemoglobin than did marrow from ribs and thoracic vertebrae. The much larger amounts of iron and hemoglobin in ribs and thoracic vertebrae likely correspond to marrow
discoloration. In summary, bone marrow
discoloration occurs in ribs, shoulder blades, and thoracic vertebrae packaged in PVC or high-oxygen MAP. Bones packaged in ultralow- oxygen MAP or arm bones packaged in
PVC or high-oxygen MAP had minimal oxidation
and discoloration
Influence of duration of dietary vitamin E supplementation on swine growth performance and carcass quality
Supplementing medium-lean genotype pigs with supranutritional concentrations of dietary vitamin E (91 IU d-a-tocopheryl acetate/lb of feed) for as long as 70 d during the finishing phase was not effective in improving swine performance, feeding characteristics, and 24 h loin muscle quality. However, lower carcass temperatures obtained by spray chilling pork sides at O°C versus 4.4°C had a beneficial effect on 24 h carcass quality by improving marbling and lean firmness scores and reducing loin muscle moisture exudate. Overall, 24 h pork carcass quality was impacted more by chill rate than dietary vitamin E supplementation.; Swine Day, Manhattan, KS, November 19, 199
Guiding cities under increased droughts: The limits to sustainable urban futures
Climate change is likely to increase droughts. The vulnerability of cities to droughts is increasing worldwide. Policy responses from cities to droughts lack consideration of long-term climatic and socio-economic scenarios, and focus on short-term emergency actions that disregard sustainability in the connected regional and river basin systems. We aim to explore the dynamics of the water-energy-land nexus in urban systems suffering increased climate change-related droughts, and their implications for sustainability. We complement a case study with a literature review providing cross-regional insights, and detail pervasive knowledge, policy and ambition gaps in the interaction between cities and droughts. We show that water availability with low emissions, without compromising ecosystems and with low costs to society, poses a local-scale limit to sustainable urban growth, a new concept delineating the limits to growth in cities. We conclude that urban and river basin planners need to institutionalize transparency and cross-sectoral integration in multi-sector partnerships, to consider long-term land use planning together with water and energy, and to apply integrated climate services to cities. Our study reveals the importance of including land, water and energy in long-term urban planning, and to connect them with the county, region, river basin and global scales. © 2021 The Author(s)The authors would like to express their gratitude for limited contributions, comments and discussions that helped to improve the manuscript to Muhamad Bahri, Jörg Cortekar, Mirabela Marin, Serban Octavian Davidescu, Iñaki Torres Cobián, and to two anonymous reviewers that helped to substantially improve the manuscript. Valuable feedback obtained in two conference sessions co‑lead by some of the authors (at Adaptation Futures 2018 in Cape Town, and at the 4th European Climate Change Adaptation conference, in Lisbon in 2019) is acknowledged. The authors acknowledge financial support from the project CLISWELN funded by ERA4CS. ERA4CS is an ERA-NET initiated by JPI Climate, and CLISWELN is funded by BMBF (DE), UEFISCDI (RO), BMBWF and FFG (AT), and MINECO (ES), with co-funding from the European Union (Grant 690462 ). This paper and the content included in it do not represent the opinion of the European Union, and the European Union is not responsible for any use that might be made of its content. Marta OlazabalThe authors would like to express their gratitude for limited contributions, comments and discussions that helped to improve the manuscript to Muhamad Bahri, Jörg Cortekar, Mirabela Marin, Serban Octavian Davidescu, Iñaki Torres Cobián, and to two anonymous reviewers that helped to substantially improve the manuscript. Valuable feedback obtained in two conference sessions co‑lead by some of the authors (at Adaptation Futures 2018 in Cape Town, and at the 4th European Climate Change Adaptation conference, in Lisbon in 2019) is acknowledged. The authors acknowledge financial support from the project CLISWELN funded by ERA4CS. ERA4CS is an ERA-NET initiated by JPI Climate, and CLISWELN is funded by BMBF (DE), UEFISCDI (RO), BMBWF and FFG (AT), and MINECO (ES), with co-funding from the European Union (Grant 690462 ). This paper and the content included in it do not represent the opinion of the European Union, and the European Union is not responsible for any use that might be made of its content. Marta Olazaba
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