104 research outputs found
Simulations of Baryon Oscillations
The coupling of photons and baryons by Thomson scattering in the early
universe imprints features in both the Cosmic Microwave Background (CMB) and
matter power spectra. The former have been used to constrain a host of
cosmological parameters, the latter have the potential to strongly constrain
the expansion history of the universe and dark energy. Key to this program is
the means to localize the primordial features in observations of galaxy spectra
which necessarily involve galaxy bias, non-linear evolution and redshift space
distortions. We present calculations, based on mock catalogs produced from
high-resolution N-body simulations, which show the range of behaviors we might
expect of galaxies in the real universe. We investigate physically motivated
fitting forms which include the effects of non-linearity, galaxy bias and
redshift space distortions and discuss methods for analysis of upcoming data.
In agreement with earlier work, we find that a survey of several Gpc^3 would
constrain the sound horizon at z~1 to about 1%.Comment: 33 pages, to appear in Astroparticle Physics. Discussion of Blake &
Glazebrook procedure changed, minor edits to match version accepted by the
journa
Ordovician K-bentonites in the Argentine Precordillera: relations to Gondwana margin evolution
Ordovician K-bcn Ionites have now been recorded from >20 localities in the vicinity of the Argentine Prccordillera. Most occur in I he eastern thrust belts, in the San Juan Limestone and the overlying the Gualcamayo Formation, but a few ash beds are known also from the central thrust belts. The oldest occur in the middle Arenig t. victorias iunatus grnplolite (Oe. evae conodont) Zone, and the youngest in the middle Llanvirn P. etegans (P. .tuecicas) Zone. Mineralogical characteristics, typical of other Ordovician K-bentonites, include a matrix of illite/smectite mixed-layer clay and a typical felsic volcanic phenocryst assemblage: biotite, beta-form quartz, alkali and plagioclase feldspar, apatite, and zircon, with lesser amounts of hornblende, clinopyroxene, tilanilc and Fe-Ti oxides. The proportions of the mineral phases and variations iii their crystal chemistry are commonly unique to individual (or small groups of) K-benlonite beds. Glass melt inclusions preserved in quartz are rhyolitic in composition The sequence is unique in its abundance of K-benlonite beds, but a close association between the Precordillera and other Ordovician sedimentary basins cannot be established.Theash distribution is most consistent with palacogeographical reconstructions in which early Ordovician drifting of the Precordillera occurred in proximity to one or more volcanic arcs, and with eventual collision along the Andean margin of Gondwana during the mid-Ordovician Ocloyic event of the Famalinian orogeny. The Puna-Famatina terrane northeast of the Precordillera might have served as the source of the K-bcnlonite ashes, possibly in concert with active arc magmatism on the Gondwana plate itself.Centro de Investigaciones Geológica
Maine Blueberry Advisory Committee Research Report
The 1990 edition of the Maine Blueberry Advisory Committee Research Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers with the Maine Agricultural Experiment Station and Maine Cooperative Extension Service at the University of Maine, Orono. Projects in this report include:
1. Biology and action thresholds of secondary blueberry pests
2. Control of blueberry maggot
3. Control of secondary blueberry pests
4. Application of steam as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study
5. Pollination of the lowbush blueberry by native bees
6. Nitrogen-phosphorus study
7. Potassium study
8. Multiple cropping of wild stands
9. Phosphorus dose/response curve
10. Improvement in the color and texture of the canned blueberry
11. The effect of fertilization and irrigation on blueberry fruit quality
12. Investigation of preprocess changes (chemical, microbiological, and/or physical) that could lead to the development of a simple and inexpensive method to measure preprocess berry spoilage
13. The effect of postharvest handling on the dietary fiber and ellagic acid content of lowbush blueberries
14. Determination of pesticide residue levels in freshly harvested and processed lowbush blueberries
15. Evaluation of Defoliating Diseases
16. Vacuum Sanitation for Disease Control
17. Evaluation and modification of commercial herbicide applications
18. Evaluation of the suitability of remote sensing to evaluate plant cover in lowbush blueberry fields
19. Evaluation of Sethoxydin (POAST) in lowbush blueberry fields
20. Seedling pruning study
21. Evaluation of norflurazon (SOLICAM) with or without hexazinone (VELPAR) for bunchberry control
22. Selective wiper and mechanical control of dogbane and bracken fern
23. Evaluation of norflurazon (SOLICAM) in fall vs spring for oatgrass control
24. Evaluation of sulfonyl urea herbicides for bunchberry control
25. Evaluation of postemergence applications of DPX-L5300 for bunchberry control
26. Effect of time of application and formulation of hexazinone (VELPAR) on blueberry and bunchberry
27. Investigations of lowbush blueberry fruit-bud cold hardiness
28. The economics of investing in irrigation for lowbush blueberries
29. Effects of irrigation on lowbush blueberry yield and quality
30. Groundwater and surface water development for blueberry irrigation
31. Design, fabrication and testing of an experimental sterilizer for blueberry field
1992 Blueberry Research Progress Reports
The 1992 Blueberry Research Progress Reports pertain to and report on research conducted in 1991, and were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:
1992 CSRS Progress Reports:
1. Investigation of Groundwater Resources
2. Sprinkler Irrigation
3. Investigation of Preprocess Changes Leading to Berry Spoilage
4. Effect of Fertilization and Irrigation on Blueberry Quality
5. Effects of Calcium Salts and Citric Acid on Quality of Canned Lowbush Blueberries
6. Pollination of Lowbush Blueberry by Native Bees
7. Application of Heat for Controlling Insects
8. Investigations of Lowbush Blueberry Fruit Bud Cold-Hardiness
9. Steam Sterilization in Lowbush Blueberry Fields
10. Heat-Tolerant Molds
11. Vacuum Sanitation for Disease Control
12. Evaluation of Infrared Burner for Weed Control
13. Evaluation and Modification of Commercial Herbicide Wipers
14. Evaluation of Remote Sensing to Estimate Plant Cover in Lowbush Blueberry Fields
15. Comparison of Three Mechanical Blueberry Harvesters vs. Hand Raking
Advisory Committee Research Reports:
16. Biology and action thresholds of secondary blueberry insects
17. Control of secondary blueberry pests
18. Control of blueberry maggot
19. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries
20. The effects of postharvest handling on the dietary fiber and ellagic acid content of lowbush blueberries
21. Investigation of preprocessing changes that could lead to development of simple and inexpensive method to measure preprocessing berry spoilage
22. Determination of pesticide residue levels in fresh and processed lowbush blueberries
23. Vacuum sanitation for disease control
24. Heat-tolerant molds
25. Seedling pruning study
26. Effect of time and rate of application of Clopyralid for control of Vetch in lowbush blueberries
27. Evaluation and modification of commercial herbicide wipers
28. Effect of time of application and formulation of Hexazinone (Velpar) on Blueberry and Bunchberry
29. Evaluation of postemergence applications of Tribenuron Methyl for Bunchberry control
30. Thresholds of Dogbane and Bracken Fern by mechanical and chemical control in lowbush blueberry fields
31. Evaluation of the suitability of remote sensing to evaluate plant cover in lowbush blueberry fields
32. Evalution of infrared burner for weed control
33. Effect of time of fall pruning on growth and productivity of blueberry and evaluation of infrared burner to prune blueberries
34. Effect of Boron on lowbush blueberry fruit set and yield
35. Winter injury protection by potassium
36. Multiple cropping of wild stands
37. Nitrogen-Phosphorus study
38. Phosphorus dose/response curve
39. Investigations of lowbush blueberry fruit bud cold-hardines
1993 Progress Reports
The 1993 Progress Reports which contain Blueberry Tax Supported Weed Management and Pruning Project Reports, and CSRS Supported Weed Management and Pruning Project Reports, pertain to and report on research conducted in 1992. They were prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:
Progress Reports
1. Effects of Irrigation on Low bush Blueberry Yield and Quality
2. Economics of Investing in Irrigation for Lowbush Blueberries
3. Diammonium Phosphate Study
4. Phosphorus Dose/Response Curve
5. Winter Injury Protection by Potassium
6. Multiple Cropping of Wild Stands
7. Effect of Boron on Lowbush Blueberry Fruit Set and Yield
8.Determination of Pesticide Residue Levels in Freshly Harvested and Processed Lowbush Blueberries
9. Effects of Calcium Salts and Citric Acids on the Quality of Canned Lowbush Blueberries- missing
10. Investigation of PreProcess Changes- missing
11. The Effect of Fertilization and Irrigation on Blueberry Fruit Control - missing
12. Pollination Ecology of Lowbush Blueberry in Maine
13. Control of Secondary Blueberry Pests
14. Control of Blueberry Maggot
15. Biology and Action Thresholds of Secondary Blueberry Pests
16. Cold-Hardiness of Native Lowbush Blueberries
17. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Fields
18. Canned Product Quality - Heat Resistant Molds
19. Sanitation for Disease Control
Blueberry Tax Supported Weed Management and Pruning Project Reports
20. Evaluation of Postemergence Applications of Tribenuron Methyl for Bunchberry Control
21. Comparison of Poast and Select for Suppression of Bunchgrass
22. Effect of Time of Fall Pruning on Growth and Productivity of Blueberries. and Evaluation of Infrared Burner to Prune Blueberries
23. Evaluation of Velpar impregnated DAP for weed control
24. Thresholds of Dogbane and Bracken Fern for Mechanical and Chemical Control in Lowbush Blueberry Fields
25. Effect of Time and Rate of Application of Clopyralid for Control of Vetch in Lowbush Blueberries
26. Hexazinone Ground Water Survey
27. Composting Blueberry Processing Waste
28. Hexazinone Movement in a Blueberry Soil in Maine
CSRS Supported Weed Management and Pruning Project Reports
29. Evaluation of the Suitability of Remote Sensing to Evaluate Plant Cover in Lowbush Blueberry Fields
30. Obstruction Removal in Lowbush Blueberry Fields
31. Evaluation of Pressurized Rope Wick Wick Master Wiper for Treating Weeds Growing Above Lowbush Blueberries
32. Evaluation of Infrared Burner for Weed Control
33. Blueberry Extension Education Program Base
Miscellaneous
34. Comparison of N, NP, and NPK Fertilizers to Correct Nitrogen and Phosphorus Deficienc
1993-94 Progress Report
The 1993 edition of the Progress Reports was prepared for the Maine Wild Blueberry Commission and the University of Maine Wild Blueberry Advisory Committee by researchers at the University of Maine, Orono. Projects in this report include:
1. Effects of irrigation on lowbush blueberry yield and quality
2. The Economics of investigating irrigation for lowbush blueberries
3. Phosphorus dose/response curve
4. Winter injury protection by potassium
5. Multiple cropping of wild stands
6. Effect of Boron and Calcium on lowbush blueberry fruit set and yield
7. Comparison of N, NP, and NPK fertilizers to correct nitrogen and phosphorus deficiency
8. Determination of pesticide residue levels in freshly harvested and processed lowbush blueberries
9. Effects of calcium salts and citric acid on the quality of canned lowbush blueberries
10. Investigation of preprocess changes (chemical, microbiological, and/or physical) that can lead to the development of a simple and inexpensive method to measure preprocess berry spoilage
11. The effect of fertilization and irrigation in blueberry fruit quality
12. Pollination Ecology of lowbush blueberry in Maine
13. Current importance of insects in lowbush blueberry fields
14. Application of heat as a method of controlling secondary pest insects on lowbush blueberry: a feasibility study
15. Control of blueberry maggot
16. Control of secondary blueberry pest insects
17. Biology and action thresholds of secondary blueberry pest insects
18. Cold-hardiness of native lowbush blueberry
19. Design, fabrication, and testing of an experimental sterilizer for blueberry fields
20. Canned Product Quality--Heat-resistant molds
21. Sanitation for disease control
22. Evaluation of Velpar® impregnated DAP and Pronone® for weed control
23. Evaluation of postemergence applications of tribenuron methyl for bunchberry control
24. Evaluation of postemergence applications of a tank mix of tribenuron methyl and hexazinone for bunchberry control
25. Thresholds of dogbane and bracken fem by mechanical and chemical control in lowbush blueberry fields
26. Effect of time of application of clopyralid for control of vetch and effect on flowering in lowbush blueberries
27. Effect of time of fall pruning on growth and productivity of blueberries and evaluation of infrared burner to prune blueberries
28. Evaluation of infrared burner for selective seedling weed control
29. Evaluation of pressurized rope wick Wick Master wiper for treating weeds growing above lowbush blueberries
30. Blueberry Extension Education Program Base
31. Blueberry ICM program for Hancock County
32. Composting blueberry processing waste
33. Hexazinone ground water survey
34. Investigations of Lowbush Blueberry Fruit bud Cold-hardiness
35. Design, Fabrication, and Testing of an Experimental Sterilizer for Blueberry Field
The specific surface area and chemical composition of diamond dust near Barrow, Alaska
Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95687/1/jgrd17349.pd
Geoeconomic variations in epidemiology, ventilation management, and outcomes in invasively ventilated intensive care unit patients without acute respiratory distress syndrome: a pooled analysis of four observational studies
Background: Geoeconomic variations in epidemiology, the practice of ventilation, and outcome in invasively ventilated intensive care unit (ICU) patients without acute respiratory distress syndrome (ARDS) remain unexplored. In this analysis we aim to address these gaps using individual patient data of four large observational studies. Methods: In this pooled analysis we harmonised individual patient data from the ERICC, LUNG SAFE, PRoVENT, and PRoVENT-iMiC prospective observational studies, which were conducted from June, 2011, to December, 2018, in 534 ICUs in 54 countries. We used the 2016 World Bank classification to define two geoeconomic regions: middle-income countries (MICs) and high-income countries (HICs). ARDS was defined according to the Berlin criteria. Descriptive statistics were used to compare patients in MICs versus HICs. The primary outcome was the use of low tidal volume ventilation (LTVV) for the first 3 days of mechanical ventilation. Secondary outcomes were key ventilation parameters (tidal volume size, positive end-expiratory pressure, fraction of inspired oxygen, peak pressure, plateau pressure, driving pressure, and respiratory rate), patient characteristics, the risk for and actual development of acute respiratory distress syndrome after the first day of ventilation, duration of ventilation, ICU length of stay, and ICU mortality. Findings: Of the 7608 patients included in the original studies, this analysis included 3852 patients without ARDS, of whom 2345 were from MICs and 1507 were from HICs. Patients in MICs were younger, shorter and with a slightly lower body-mass index, more often had diabetes and active cancer, but less often chronic obstructive pulmonary disease and heart failure than patients from HICs. Sequential organ failure assessment scores were similar in MICs and HICs. Use of LTVV in MICs and HICs was comparable (42\ub74% vs 44\ub72%; absolute difference \u20131\ub769 [\u20139\ub758 to 6\ub711] p=0\ub767; data available in 3174 [82%] of 3852 patients). The median applied positive end expiratory pressure was lower in MICs than in HICs (5 [IQR 5\u20138] vs 6 [5\u20138] cm H2O; p=0\ub70011). ICU mortality was higher in MICs than in HICs (30\ub75% vs 19\ub79%; p=0\ub70004; adjusted effect 16\ub741% [95% CI 9\ub752\u201323\ub752]; p<0\ub70001) and was inversely associated with gross domestic product (adjusted odds ratio for a US$10 000 increase per capita 0\ub780 [95% CI 0\ub775\u20130\ub786]; p<0\ub70001). Interpretation: Despite similar disease severity and ventilation management, ICU mortality in patients without ARDS is higher in MICs than in HICs, with a strong association with country-level economic status. Funding: No funding
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