Soil CO2 Efflux Trends Following the Thinning of a 22-Year-Old Loblolly Pine Plantation on the Piedmont of Virginia

Science.gov (United States)

M.F. Selig; J.R. Seiler

2004-01-01

Due to the growing concern over increasing atmospheric CO2 concentrations, it has become increasingly important to understand the influence forest practices have on the global carbon cycle. The thinning of loblolly pine (Pinus taeda) plantations in the Southeastern United States is a common silvicultural practice and has great...

Growth and physiology of loblolly pine in response to long-term resource management: defining growth potential in the southern United States

Science.gov (United States)

Lisa J. Samuelson; John Butnor; Chris Maier; Tom A. Stokes; Kurt Johnsen; Michael Kane

2008-01-01

Leaf physiology and stem growth were assessed in loblolly pine (Pinus taeda L.) in response to 10 to 11 years of treatment with weed control (W), weed control plus irrigation (WI), weed control plus irrigation and fertigation (WIF), or weed control plus irrigation, fertigation, and pest control (WIFP) to determine whether increased resource...

Silvicultural treatments for converting loblolly pine to longleaf pine dominance: Effects on resource availability and their relationships with planted longleaf pine seedlings

Science.gov (United States)

Huifeng Hu; G.Geoff Wang; Joan L. Walker; Benjamin O. Knapp

2012-01-01

Throughout the southeastern United States, land managers are currently interested in converting loblolly pine (Pinus taeda L.) plantations to species rich longleaf pine (Pinus palustris Mill.) ecosystems. In a 3-year study on moderately well- to well-drained soils of the Lower Coastal Plain in North Carolina, we examined the...

A multivariate mixed model system for wood specific gravity and moisture content of planted loblolly pine stands in the southern United States

Science.gov (United States)

Finto Antony; Laurence R. Schimleck; Alex Clark; Richard F. Daniels

2012-01-01

Specific gravity (SG) and moisture content (MC) both have a strong influence on the quantity and quality of wood fiber. We proposed a multivariate mixed model system to model the two properties simultaneously. Disk SG and MC at different height levels were measured from 3 trees in 135 stands across the natural range of loblolly pine and the stand level values were used...

The health of loblolly pine stands at Fort Benning, GA

Science.gov (United States)

Soung-Ryoul Ryu; G. Geoff Wang; Joan L. Walker

2013-01-01

Approximately two-thirds of the red-cockaded woodpecker (Picoides borealis) (RCW) groups at Fort Benning, GA, depend on loblolly pine (Pinus taeda) stands for nesting or foraging. However, loblolly pine stands are suspected to decline. Forest managers want to replace loblolly pine with longleaf pine (P. palustris...

Loblolly pine seedling growth after inoculation with plant growth-promoting rhizobacteria and ozone exposure

Energy Technology Data Exchange (ETDEWEB)

Estes, B.L.; Enebak, S.A.; Chappelka, A.H. [Auburn Univ., Auburn, AL (United States). School of Forestry and Wildlife Sciences

2004-07-01

The conifer tree species with the greatest economic importance in south eastern United States plantations is Loblolly pine. Plantations require intensive fertilization, pesticide application, and irrigation. In these cases growth-promoting rhizobacteria are useful in pest control. While it was once thought that ozone in the troposphere was limited to urban areas, it is now known that it is transported far from its place of origin. Ozone is known to impact plant growth negatively. There have been no previous studies on whether growth-promoting rhizobacteria can decrease the negative effects of ozone. In this study seedlings of Loblolly pine were inoculated with either Bacillus subtilis (Ehrenberg) Cohn or Paenibacillus macerans (Schardinger) Ash. These were exposed to controlled amounts of ozone for 8-12 weeks. All plants showed decreased biomass and increased foliar damage compared to plants that were not exposed to ozone. B. subtilis inoculated plants showed less foliar damage than un-inoculated ones and root dimensions were increased. The use of growth-promoting rhizobacteria is not ready for large-scale commercial application in forestry, but this demonstration of the possible beneficial effects on ozone exposure warrants further investigation. 44 refs., 3 tabs., 2 figs.

Delineating pMDI model reactions with loblolly pine via solution-state NMR spectroscopy. Part 1, Catalyzed reactions with wood models and wood polymers

Science.gov (United States)

Daniel J. Yelle; John Ralph; Charles R. Frihart

2011-01-01

To better understand adhesive interactions with wood, reactions between model compounds of wood and a model compound of polymeric methylene diphenyl diisocyanate (pMDI) were characterized by solution-state NMR spectroscopy. For comparison, finely ground loblolly pine sapwood, milled-wood lignin and holocellulose from the same wood were isolated and derivatized with...

Assessment of Loblolly Pine Decline in Central Alabama

Science.gov (United States)

Nolan J. Hess; William J. Otrosina; Emily A. Carter; Jim R. Steinman; John P. Jones; Lori G. Eckhardt; Ann M. Weber; Charles H. Walkinshaw

2002-01-01

Loblolly pine (Pinus taeda L.) decline has been prevalent on upland sites of central Alabama since the 1960's. The purpose of this study was to compare Forest Health Monitoring (FHM) standards and protocols with root health evaluations relative to crown, stem, and site measurements. Thirty-nine 1/6 acre plots were established on loblolly decline...

A survey of cavity-nesting bees and wasps in loblolly pine stands of the Savannah River Site, Aiken County, South Carolina.

Energy Technology Data Exchange (ETDEWEB)

Horn, S.; Hanula, J., L.

2004-03-10

Horn, Scott, and James L. Hanula. 2004. A survey of cavity-nesting bees and wasps in loblolly pine stands of the Savannah River Site, Aiken County, South Carolina. 39(3): 464-469. Abstract: In recent years concern over widespread losses in biodiversity has grown to include a possible decline of many native pollinators, primarily bees. Factors such as habitat fragmentation, agricultural practices, use of pesticides, the introduction of invasive species, or changes in land use may negatively impact these vital organisims. Most reported studies show that human impacts on pollinators are overwhelmingly negative. Reductions in pollinator populations may profoundly impact plant population dynamics and ecosystem function. Little baseline data exists on the diversity and relative abundance of bees and wasps in southern forests. The objective of this study was to develop a simple, effective method of surveying cavity-nesting bees and wasps and to determine species diversity in mature forests of loblolly pine, the most widely planted tree species in the southern United States.

Microsatellite DNA in genomic survey sequences and UniGenes of loblolly pine

Science.gov (United States)

Craig S Echt; Surya Saha; Dennis L Deemer; C Dana Nelson

2011-01-01

Genomic DNA sequence databases are a potential and growing resource for simple sequence repeat (SSR) marker development in loblolly pine (Pinus taeda L.). Loblolly pine also has many expressed sequence tags (ESTs) available for microsatellite (SSR) marker development. We compared loblolly pine SSR densities in genome survey sequences (GSSs) to those in non-redundant...

Pathogenicity of Leptographium Species Associated with Loblolly Pine Decline

Science.gov (United States)

L. G. Eckhardt; J. P. Jones; Kier D. Klepzig

2004-01-01

Freshly lifted seedlings and 21-year-old trees of loblolly pine were wound-inoculated with Leptographium species recovered from the soil and/or roots of trees with loblolly decline symptoms in central Alabama. Seedlings inoculated with L. procerum in the greenhouse produced significantly fewer root initials and a smaller root mass than control...

Effects of cultural intensity and density regime treatment on post-thinning loblolly pine individual tree DBH increment in the lower coastal plain of the southeastern United States

Science.gov (United States)

John T. Perren; Michael Kane; Dehai Zhao; Richard Daniels

2016-01-01

Thinning is a well understood concept used to manage density dependent factors at the stand level. This study evaluates the effect of planting density, cultural intensity, and thinning treatment on loblolly pine post-thinning individual tree development. The Lower Coastal Plain Culture/Density Study, has four initial densities, in combination with two cultural...

Understanding the Fate of Applied Nitrogen in Pine Plantations of the Southeastern United States Using 15N Enriched Fertilizers

Directory of Open Access Journals (Sweden)

Jay E. Raymond

2016-11-01

Full Text Available This study was conducted to determine the efficacy of using enhanced efficiency fertilizer (EEFs products compared to urea to improve fertilizer nitrogen use efficiency (FNUE in forest plantations. All fertilizer treatments were labeled with 15N (0.5 atom percent and applied to 100 m2 circular plots at 12 loblolly pine stands (Pinus taeda L. across the southeastern United States. Total fertilizer N recovery for fertilizer treatments was determined by sampling all primary ecosystem components and using a mass balance calculation. Significantly more fertilizer N was recovered for all EEFs compared to urea, but there were generally no differences among EEFs. The total fertilizer N ecosystem recovery ranged from 81.9% to 84.2% for EEFs compared to 65.2% for urea. The largest amount of fertilizer N recovered for all treatments was in the loblolly pine trees (EEFs: 38.5%–49.9%, urea: 34.8% and soil (EEFs: 30.6%–38.8%, urea: 28.4%. This research indicates that a greater ecosystem fertilizer N recovery for EEFs compared to urea in southeastern pine plantations can potentially lead to increased FNUE in these systems.

Carbon Sequestration in loblolly pine plantations: Methods, limitations, and research needs for estimating storage pools

Science.gov (United States)

Kurt Johnsen; Bob Teskey; Lisa Samuelson; John Butnor; David Sampson; Felipe Sanchez; Chris Maier; Steve McKeand

2004-01-01

Globally, the species most widely used for plantation forestry is loblolly pine (Pinus taeda L.). Because loblolly pine plantations are so extensive and grow so rapidly, they provide a great potential for sequestering atmospheric carbon (C). Because loblolly pine plantations are relatively simple ecosystems and because such a great volume of...

Heterogeneity of interflavanoid bond Location in loblolly pine bark procyanidins

Science.gov (United States)

Richard W. Hemingway; Joseph J. Karchesy; Gerald W. McGraw; Richard A. Wielesek

1983-01-01

Procyanidins B-1, B-3 and B-7 were obtained from Pinus taeda phloem in yields of 0.076, 0.021 and 0.034% of unextracted dry wt. Procyanidins B-1 and B-7 were produced in relative yields of 2.4:1 by biosynthetically patterned synthesis from catechin and loblolly pine tannins. Partial acid-catalysed thiolytic cleavage of loblolly pine phloem tannins...

Inheritance of RFLP loci in a loblolly pine three-generation pedigree

Science.gov (United States)

M.D. Devey; K.D. Jermstad; C.G. Tauer; D.B. Neale

1991-01-01

A high-density restriction fragment length polymorphism (RFLP) linkage map is being constructed for loblolly pine (Pinus taeda L.). Loblolly pine cDNA and genomic DNA clones were used as probes in hybridizations to genomic DNAs prepared from grandparents, parents, and progeny of a three-generation outbred pedigree. Approximately 200 probes were...

Diet of southern toads (Bufo terrestris) in loblolly pine (Pinus taeda) stands subject to coarse woody debris manipulations.

Energy Technology Data Exchange (ETDEWEB)

Moseley, Kurtis R.; Steven B. Castleberry; James L. Hanula; Mark Ford.

2005-04-01

ABSTRACT In the southeastern United States, coarse woody debris (CWD) typically harbors high densities of invertebrates. However, its importance as a foraging substrate for southeastern amphibians is relatively unknown. We examined effects of CWD manipulations on diet composition of southern toads (Bufo terrestris) in upland loblolly pine (Pinus taeda) stands in the Coastal Plain of South Carolina. Twelve 9.3-ha plots were assigned one of the following treatments: removal- all CWD _10 cm in diameter and _60 cm long removed; downed- five-fold increase in volume of down CWD; and unmanipulated control stands. We collected southern toads _4 cm snout-vent length (SVL) during 14 d sampling periods in June and October 2002, June 2003 and during a 28 d sampling period in April 2003. We collected 80, 36 and 35 southern toads in control, downed and removal treatments, respectively. We found no difference in relative abundance or frequency of invertebrate groups consumed among treatments (P.0.05). Average body weight (g), SVL (cm) and stomach content weight (g wet) of individuals also were similar among treatments (P . 0.05). The role of CWD as a foraging substrate for southern toads in loblolly pine stands of the southeastern Coastal Plain may be negligible, at least in the early stages of decay.

31 CFR 515.321 - United States; continental United States.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 515.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof, including the Trust Territory of...

31 CFR 500.321 - United States; continental United States.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 500.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof, including U.S. trust territories...

31 CFR 535.321 - United States; continental United States.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States; continental United... General Definitions § 535.321 United States; continental United States. The term United States means the United States and all areas under the jurisdiction or authority thereof including the Trust Territory of...

Rapanos v. United States & Carabell v. United States

Science.gov (United States)

Documents associated with guidance for implementing the definition of waters of the United States under the Clean Water Act following the Rapanos v. United States, and Carabell v. United States Supreme Court decision.

Reassessment of Loblolly Pine Decline on the Oakmulgee Ranger District, Talladega National Forest, Alabama

Science.gov (United States)

Nolan J. Hess; William J. Otroana; John P. Jones; Arthur J. Goddard; Charles H. Walkinshaw

1999-01-01

Loblolly pine (Pinus taeda L.) decline has been a management concern on the Oakmulgee Ranger District since the 1960's. The symptoms include sparse crowns, reduced radial growth, deterioration of fine roots, decline, and mortality of loblolly pine by age 50.

Tandem selection for fusiform rust sisease resistance to develop a clonal elite breeding population of loblolly pine

Science.gov (United States)

Steve McKeand; Saul Garcia; Josh Steiger; Jim Grissom; Ross Whetten; Fikret. Isik

2012-01-01

The elite breeding populations of loblolly pine (Pinus taeda L.) in the North Carolina State University Cooperative Tree Improvement Program are intensively managed for short-term genetic gain. Fusiform rust disease, caused by the fungus Cronartium quercuum f. sp. fusiforme, is the most economically...

A Strategy for the Third Breeding Cycle of Loblolly Pine in the Southeastern U.S.

Science.gov (United States)

S.E. McKeand; F.E. Bridgwater

1998-01-01

A strategy for the North Carolina State University - Industry Cooperative Tree Improvement Program's third-cycle breeding for loblolly pine (Pinus taeda L.) was developed to provide genetic gain in the short-term as well as to maintain genetic diversity so that long-term genetic gains will also be possible. Our strategy will be to manage a...

Association genetics of growth and adaptive traits in loblolly pine (Pinus taeda L.) using whole-exome-discovered polymorphisms

Science.gov (United States)

Mengmeng Lu; Konstantin V. Krutovsky; C. Dana Nelson; Jason B. West; Nathalie A. Reilly; Carol A. Loopstra

2017-01-01

In the USA, forest genetics research began over 100 years ago and loblolly pine breeding programs were established in the 1950s. However, the genetics underlying complex traits of loblolly pine remains to be discovered. To address this, adaptive and growth traits were measured and analyzed in a clonally tested loblolly pine (Pinus taeda L.) population. Over 2.8 million...

Electromagnetic treatment of loblolly pine seeds

Energy Technology Data Exchange (ETDEWEB)

Barnett, J. P. [Southern Forest Experiment Station, New Orleans, LA (United States); Krugman, S. L.

1989-11-15

Loblolly pine (Pinus faeda L.) seeds were exposed to an electromagnetic radiation treatment (Energy Transfer Process@, marketed by the Energy Transfer Corporation), and the effects of the treatments on seed germination, seedling development, disease resistance, and field performance of seedlings were evaluated. None of the evaluated variables showed any improvement over untreated controls.

Impact of Early Pruning and Thinning on Lumber Grade Yield From Loblolly Pine

Science.gov (United States)

Alexander Clark; Mike Strub; Larry R. Anderson; H. Gwynne Lloyd; Richard F. Daniels; James H. Scarborough

2004-01-01

The Sudden Sawlog Study was established in 1954 near Crossett, AR, in a 9-year-old loblolly pine plantation to test the hypothesis that loblolly plantations can produce sawtimber in 30 years. To stimulate diameter and height growth and clear wood production, study plots were heavily thinned, trees pruned to 33 feet by age 24 years, under-story mowed, and growth of...

Plentern mit Kiefern--Ergebnisse aus den USA [Plentering with pines--results from the United States

Science.gov (United States)

James M. Guldin; Don C. Bragg; Andreas Zingg

2017-01-01

Until now, scientifically reliable data on plentering of light-demanding tree species in Europe have been lacking. This gap is filled with long-term trials from the USA, among others with southern yellow pines. In the southern state of Arkansas, two plots of 16 hectares were installed in 1936, in the context of a large-scale trial of mixed loblolly pine (...

Harvester Productivity for Row Thinning Loblolly Pine Plantations

Science.gov (United States)

James E. Granskog; Walter C. Anderson

1980-01-01

Tivo tree harvesters currently being used to thin southern pine plantations were evaluated to determine the effects of stand characteristics on machine productivity. Production rates for row thinning loblolly plantations are presented by stand age, site index, and stand density.

Growth and wood properties of genetically improved loblolly pine: propagation type comparison and genetic parameters

Science.gov (United States)

Finto Antony; Laurence Schimleck; Lewis Jordan; Benjamin Hornsby; Joseph Dahlen; Richard Daniels; Alexander Clark; Luis Apiolaza; Dudley Huber

2013-01-01

The use of clonal varieties in forestry offers great potential to improve growth traits (quantity) and wood properties (quality) of loblolly pine (Pinus taeda L.). Loblolly pine trees established via somatic embryogenesis (clones), full-sib zygotic crosses, and half-sib zygotic open-pollinated families were sampled to identify variation in growth and wood properties...

Long-term Root Growth Response to Thinning, Fertilization, and Water Deficit in Plantation Loblolly Pine

Science.gov (United States)

M.A. Sword-Sayer; Z. Tang

2004-01-01

High water deficits limit the new root growth of loblolly pine (Pinus taeda L.), potentially reducing soil resource availability and stand growth. We evaluated new root growth and stand production in response to thinning and fertilization in loblolly pine over a 6-year period that consisted of 3 years of low water deficit followed by 3 years of high...

Chemical characterzation of fine particle emissions from the fireplace combustion of woods grown in the Southern United States.

Science.gov (United States)

Fine, Philip M; Cass, Glen R; Simoneit, Bernd R T

2002-04-01

The fireplace combustion of wood is a significant and largely unregulated source of fine particle pollution in the United States. Source apportionment techniques that use particulate organic compounds as tracers have been successful in determining the contribution of wood smoke to ambient fine particle levels in specific areas in California. To apply these techniques to the rest of the United States, the differences in emissions profiles between different wood smoke sources and fuel types should be resolved. To this end, a series of fireplace source tests was conducted on six fuel wood species found in the Southern United States to determine fine particulate emission factors for total mass, ionic and elemental species, elemental and organic carbon, and over 250 individual organic compounds. The wood species tested, chosen for their high abundance and availability in the Southern U.S. region, were yellow poplar, white ash, sweetgum, mockernut hickory, loblolly pine, and slash pine. The differences in the emissions of compounds such as substituted phenols and resin acids help to distinguish between the smoke from hardwood and softwood combustion. Levoglucosan, a cellulose pyrolysis product which may serve as a tracer for wood smoke in general, was quantified in the emissions from all the wood species burned. The furofuran lignan, yangambin, which was emitted in significant quantities from yellow poplar combustion and not detected in any of the other North American wood smokes, is a potential species-specific molecular tracer which may be useful in qualitatively identifying particulate emissions from a specific geographical area where yellow poplar is being burned.

Influence of establishment timing and planting stock on early rotational growth of loblolly pine plantations in Texas

Science.gov (United States)

M. A. Blazier; E. L. Taylor; A. G. Holley

2010-01-01

Planting container seedlings, which have relatively fully formed root systems encased in a soil-filled plug, may improve loblolly pine plantation productivity by increasing early survival and growth relative to that of conventionally planted bareroot seedlings. Planting seedlings in fall may also confer productivity increases to loblolly pine plantations by giving...

Financial performance of loblolly and longleaf pine plantations

Science.gov (United States)

Steven D. Mills; Charles T. Stiff

2013-01-01

The financial performance of selected management regimes for loblolly (Pinus taeda L.) and longleaf pine (P. palustris Mill.) plantations were compared for four cases, each with low- and high-site productivity levels and each evaluated using 5 and 7 percent real discount rates. In all cases, longleaf pine was considered both with...

Tolerance of Loblolly Pines to Fusiform Rust

Science.gov (United States)

Charles H. Walkinshaw; James P. Barnett

1995-01-01

Loblolly pines (Pinus taeda L.) that were 8 to 17 yr old tolerated one to three fusiform rust (Cronartium quercuum [Berk.] Miyabe ex Shirai f. sp. fusiforme) galls in their stems.Families with four or more galls in their stems lost 2.5% or more of the trees by age 17.In living trees with less than four stem galls, diameter growth was comparable to...

7 CFR 1220.615 - State and United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false State and United States. 1220.615 Section 1220.615... CONSUMER INFORMATION Procedures To Request a Referendum Definitions § 1220.615 State and United States. State and United States include the 50 States of the United States of America, the District of Columbia...

7 CFR 1220.129 - State and United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false State and United States. 1220.129 Section 1220.129... CONSUMER INFORMATION Soybean Promotion and Research Order Definitions § 1220.129 State and United States. The terms State and United States include the 50 States of the United States of America, the District...

Management intensity and genetics affect loblolly pine seedling performance

Science.gov (United States)

Scott D. Roberts; Randall J. Rousseau; B. Landis Herrin

2012-01-01

Capturing potential genetic gains from tree improvement programs requires selection of the appropriate genetic stock and application of appropriate silvicultural management techniques. Limited information is available on how specific loblolly pine varietal genotypes perform under differing growing environments and management approaches. This study was established in...

Allozyme diversity of selected and natural loblolly pine populations

Science.gov (United States)

Ronald C. Schmidtling; E. Carroll; T. LaFarge

1999-01-01

Loblolly pine (Pinus taeda L.) megagametophytes and embryos were examined electrophoretically to compare the extent and distribution of genetic variability in allozymes of selected and wild populations. Range-wide collections of three different types were investigated in this study. These consisted of seed sampled from (1) a provenance test...

Effects of the silvicultural intensity on the 4-years growth and leaf-level physiology of loblolly pine varieties

Science.gov (United States)

Marco Yanez; John Seiler; Thomas Fox

2015-01-01

The role that genetic improvement plays in the increase of productivity in loblolly pine (Pinus taeda L.) in the South has been recognized (McKeand and others 2003). Varietal forestry has the potential to improve the productivity and quality of loblolly pine stands, and higher genetic gains can be achieved in volume and stand uniformity (Zobel and Talbert 1984).

7 CFR 1209.21 - State and United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false State and United States. 1209.21 Section 1209.21... Definitions § 1209.21 State and United States. (a) State means any of the several States, the District of Columbia, and the Commonwealth of Puerto Rico. (b) United States means collectively the several States of...

Carbon allocation to young loblolly pine roots and stems

Science.gov (United States)

Paul P. Kormanik; Shi-Jean S. Sung; Clanton C. Black; Stanley J. Zarnoch

1995-01-01

This study of root biomass with loblolly pine was designed with the following objectives: (1) to measure the root biomass for a range of individual trees between the ages of 3 and 10 years on different artificial and natural forest sites and (2) to relate the root biomass to aboveground biomass components.

Variability of sun-induced chlorophyll fluorescence according to stand age-related processes in a managed loblolly pine forest.

Science.gov (United States)

Colombo, Roberto; Celesti, Marco; Bianchi, Remo; Campbell, Petya K E; Cogliati, Sergio; Cook, Bruce D; Corp, Lawrence A; Damm, Alexander; Domec, Jean-Christophe; Guanter, Luis; Julitta, Tommaso; Middleton, Elizabeth M; Noormets, Asko; Panigada, Cinzia; Pinto, Francisco; Rascher, Uwe; Rossini, Micol; Schickling, Anke

2018-02-20

Leaf fluorescence can be used to track plant development and stress, and is considered the most direct measurement of photosynthetic activity available from remote sensing techniques. Red and far-red sun-induced chlorophyll fluorescence (SIF) maps were generated from high spatial resolution images collected with the HyPlant airborne spectrometer over even-aged loblolly pine plantations in North Carolina (United States). Canopy fluorescence yield (i.e., the fluorescence flux normalized by the light absorbed) in the red and far-red peaks was computed. This quantifies the fluorescence emission efficiencies that are more directly linked to canopy function compared to SIF radiances. Fluorescence fluxes and yields were investigated in relation to tree age to infer new insights on the potential of those measurements in better describing ecosystem processes. The results showed that red fluorescence yield varies with stand age. Young stands exhibited a nearly twofold higher red fluorescence yield than mature forest plantations, while the far-red fluorescence yield remained constant. We interpreted this finding in a context of photosynthetic stomatal limitation in aging loblolly pine stands. Current and future satellite missions provide global datasets of SIF at coarse spatial resolution, resulting in intrapixel mixture effects, which could be a confounding factor for fluorescence signal interpretation. To mitigate this effect, we propose a surrogate of the fluorescence yield, namely the Canopy Cover Fluorescence Index (CCFI) that accounts for the spatial variability in canopy structure by exploiting the vegetation fractional cover. It was found that spatial aggregation tended to mask the effective relationships, while the CCFI was still able to maintain this link. This study is a first attempt in interpreting the fluorescence variability in aging forest stands and it may open new perspectives in understanding long-term forest dynamics in response to future climatic

Hurricane Katrina winds damaged longleaf pine less than loblolly pine

Science.gov (United States)

Kurt H. Johnsen; John R. Butnor; John S. Kush; Ronald C. Schmidtling; C. Dana. Nelson

2009-01-01

Some evidence suggests that longleaf pine might be more tolerant of high winds than either slash pine (Pinus elliotii Englem.) or loblolly pine (Pinus taeda L.). We studied wind damage to these three pine species in a common garden experiment in southeast Mississippi following Hurricane Katrina,...

7 CFR 1160.104 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 9 2010-01-01 2009-01-01 true United States. 1160.104 Section 1160.104 Agriculture... Definitions § 1160.104 United States. United States means the 48 contiguous states in the continental United States and the District of Columbia, except that United States means the 50 states of the United States...

Risk Analysis of Loblolly Pine Controlled Mass Pollination Program

Science.gov (United States)

T.D. Byram; F.E. Bridgwater

1999-01-01

The economic success of controlled mass pollination (CMP) depends both upon the value of the genetic gain obtained and the cost per seed. Crossing the best six loblolly pine (Pinus taeda) parents currently available in each deployment region of the Western Gulf Forest Tree Improvement Program will produce seed with an average additional gain in mean...

Herbaceous weed control in loblolly pine plantations using flazasulfuron

Science.gov (United States)

Andrew W. Ezell; Jimmie L. Yeiser

2015-01-01

A total of 13 treatments were applied at four sites (two in Mississippi and two in Texas) to evaluate the efficacy of flazasulfuron applied alone or in mixtures for providing control of herbaceous weeds. All sites were newly established loblolly pine (Pinus taeda L.) plantations. Plots were evaluated monthly until 180 days after treatment. No phytotoxicity on pine...

Microarray analysis and scale-free gene networks identify candidate regulators in drought-stressed roots of loblolly pine (P. taeda L.

Directory of Open Access Journals (Sweden)

Bordeaux John M

2011-05-01

Full Text Available Abstract Background Global transcriptional analysis of loblolly pine (Pinus taeda L. is challenging due to limited molecular tools. PtGen2, a 26,496 feature cDNA microarray, was fabricated and used to assess drought-induced gene expression in loblolly pine propagule roots. Statistical analysis of differential expression and weighted gene correlation network analysis were used to identify drought-responsive genes and further characterize the molecular basis of drought tolerance in loblolly pine. Results Microarrays were used to interrogate root cDNA populations obtained from 12 genotype × treatment combinations (four genotypes, three watering regimes. Comparison of drought-stressed roots with roots from the control treatment identified 2445 genes displaying at least a 1.5-fold expression difference (false discovery rate = 0.01. Genes commonly associated with drought response in pine and other plant species, as well as a number of abiotic and biotic stress-related genes, were up-regulated in drought-stressed roots. Only 76 genes were identified as differentially expressed in drought-recovered roots, indicating that the transcript population can return to the pre-drought state within 48 hours. Gene correlation analysis predicts a scale-free network topology and identifies eleven co-expression modules that ranged in size from 34 to 938 members. Network topological parameters identified a number of central nodes (hubs including those with significant homology (E-values ≤ 2 × 10-30 to 9-cis-epoxycarotenoid dioxygenase, zeatin O-glucosyltransferase, and ABA-responsive protein. Identified hubs also include genes that have been associated previously with osmotic stress, phytohormones, enzymes that detoxify reactive oxygen species, and several genes of unknown function. Conclusion PtGen2 was used to evaluate transcriptome responses in loblolly pine and was leveraged to identify 2445 differentially expressed genes responding to severe drought stress in

Microarray analysis and scale-free gene networks identify candidate regulators in drought-stressed roots of loblolly pine (P. taeda L.)

Science.gov (United States)

2011-01-01

Background Global transcriptional analysis of loblolly pine (Pinus taeda L.) is challenging due to limited molecular tools. PtGen2, a 26,496 feature cDNA microarray, was fabricated and used to assess drought-induced gene expression in loblolly pine propagule roots. Statistical analysis of differential expression and weighted gene correlation network analysis were used to identify drought-responsive genes and further characterize the molecular basis of drought tolerance in loblolly pine. Results Microarrays were used to interrogate root cDNA populations obtained from 12 genotype × treatment combinations (four genotypes, three watering regimes). Comparison of drought-stressed roots with roots from the control treatment identified 2445 genes displaying at least a 1.5-fold expression difference (false discovery rate = 0.01). Genes commonly associated with drought response in pine and other plant species, as well as a number of abiotic and biotic stress-related genes, were up-regulated in drought-stressed roots. Only 76 genes were identified as differentially expressed in drought-recovered roots, indicating that the transcript population can return to the pre-drought state within 48 hours. Gene correlation analysis predicts a scale-free network topology and identifies eleven co-expression modules that ranged in size from 34 to 938 members. Network topological parameters identified a number of central nodes (hubs) including those with significant homology (E-values ≤ 2 × 10-30) to 9-cis-epoxycarotenoid dioxygenase, zeatin O-glucosyltransferase, and ABA-responsive protein. Identified hubs also include genes that have been associated previously with osmotic stress, phytohormones, enzymes that detoxify reactive oxygen species, and several genes of unknown function. Conclusion PtGen2 was used to evaluate transcriptome responses in loblolly pine and was leveraged to identify 2445 differentially expressed genes responding to severe drought stress in roots. Many of the

Identification of a new retrotransposable element in loblolly pine

Science.gov (United States)

M.N. Islam-Faridi; A.M. Morse; K.E. Smith; J.M. Davis; S. Garcia; H.V. Amerson; M.A. Majid; T.L. Kubisiak; C.D. Nelson

2005-01-01

We initiated a project to locate the genomic position of fusiform rust resistance gene 1 (Fr1) in loblolly pine using fluorescent in situ hybridization (FISH). Four random amplified polymorphic DNA (RAPD) markers previously found to be tightly linked to Fr1 were cloned and sequenced, providing a total coverage of about 2 Kb. In order to obtain discernible signal of...

Post-fertilization physiology and growth performance of loblolly pine clones

Science.gov (United States)

N.T. King; J.R. Seiler; T.R. Fox; KurtH. Johnsen

2008-01-01

The physiological processes leading to enhanced growth of loblolly pine (Pinus taeda L.) following fertilization are not clearly understood. Part of the debate revolves around the temporal response of net photosynthetic rate (An) to fertilization and whether the An response is always positive. We measured light-saturated photosynthetic rate (Asat), dark respiration...

31 CFR 800.225 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 800.225 Section 800... TAKEOVERS BY FOREIGN PERSONS Definitions § 800.225 United States. The term United States or U.S. means the United States of America, the States of the United States, the District of Columbia, and any commonwealth...

7 CFR 1150.106 - United States.

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2010-01-01

... 7 Agriculture 9 2010-01-01 2009-01-01 true United States. 1150.106 Section 1150.106 Agriculture... Order Definitions § 1150.106 United States. United States means the 48 contiguous States in the continental United States. ...

Malaria Treatment (United States)

Science.gov (United States)

... Providers, Emergency Consultations, and General Public. Contact Us Malaria Treatment (United States) Recommend on Facebook Tweet Share Compartir Treatment of Malaria: Guidelines For Clinicians (United States) Download PDF version ...

Switchgrass (Panicum virgatum Intercropping within Managed Loblolly Pine (Pinus taeda Does Not Affect Wild Bee Communities

Directory of Open Access Journals (Sweden)

Joshua W. Campbell

2016-11-01

Full Text Available Intensively-managed pine (Pinus spp. have been shown to support diverse vertebrate communities, but their ability to support invertebrate communities, such as wild bees, has not been well-studied. Recently, researchers have examined intercropping switchgrass (Panicum virgatum, a native perennial, within intensively managed loblolly pine (P. taeda plantations as a potential source for cellulosic biofuels. To better understand potential effects of intercropping on bee communities, we investigated visitation of bees within three replicates of four treatments of loblolly pine in Mississippi, U.S.A.: 3–4 year old pine plantations and 9–10 year old pine plantations with and without intercropped switchgrass. We used colored pan traps to capture bees during the growing seasons of 2013 and 2014. We captured 2507 bees comprised of 18 different genera during the two-year study, with Lasioglossum and Ceratina being the most common genera captured. Overall, bee abundances were dependent on plantation age and not presence of intercropping. Our data suggests that switchgrass does not negatively impact or promote bee communities within intensively-managed loblolly pine plantations.

Switchgrass (Panicum virgatum) Intercropping within Managed Loblolly Pine (Pinus taeda) Does Not Affect Wild Bee Communities.

Science.gov (United States)

Campbell, Joshua W; Miller, Darren A; Martin, James A

2016-11-04

Intensively-managed pine ( Pinus spp.) have been shown to support diverse vertebrate communities, but their ability to support invertebrate communities, such as wild bees, has not been well-studied. Recently, researchers have examined intercropping switchgrass ( Panicum virgatum ), a native perennial, within intensively managed loblolly pine ( P. taeda ) plantations as a potential source for cellulosic biofuels. To better understand potential effects of intercropping on bee communities, we investigated visitation of bees within three replicates of four treatments of loblolly pine in Mississippi, U.S.A.: 3-4 year old pine plantations and 9-10 year old pine plantations with and without intercropped switchgrass. We used colored pan traps to capture bees during the growing seasons of 2013 and 2014. We captured 2507 bees comprised of 18 different genera during the two-year study, with Lasioglossum and Ceratina being the most common genera captured. Overall, bee abundances were dependent on plantation age and not presence of intercropping. Our data suggests that switchgrass does not negatively impact or promote bee communities within intensively-managed loblolly pine plantations.

A Southwide Rate Test of Azinphosmethyl (Guthion®) for Cone and Seed Insect Control In Loblolly Pine Seed Orchards

Science.gov (United States)

A.C. Mangini; L.R. Barber; R.S. Cameron; G.L. DeBarr; G.R. Hodge; J.B. Jett; W.L. Lowe; J.L. McConnell; J. Nord; J.W. Taylor

1998-01-01

A southwide efficiency test of reduced rates of azinphosmethyl (Guthion®) for control of seed and cone insects in loblolly pine seed orchards was conducted in 1992. In each of nine loblolly pine (Pinus taeda L.) seed orchards, an untreated (no protection) check and two of five possible rates of Guthion® (1.0, 1.5, 2.0, 2.5, or 3.0 lb ai/ac/...

7 CFR 65.255 - United States.

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2010-01-01

... 7 Agriculture 3 2010-01-01 2010-01-01 false United States. 65.255 Section 65.255 Agriculture..., PEANUTS, AND GINSENG General Provisions Definitions § 65.255 United States. United States means the 50... United States. ...

7 CFR 1250.308 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1250.308 Section 1250.308 Agriculture... Research and Promotion Order Definitions § 1250.308 United States. United States means the 48 contiguous States of the United States of America and the District of Columbia. ...

7 CFR 1205.23 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1205.23 Section 1205.23 Agriculture... Procedures for Conduct of Sign-up Period Definitions § 1205.23 United States. The term United States means the 50 states of the United States of America. Procedures ...

31 CFR 597.318 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 597.318 Section 597... General Definitions § 597.318 United States. The term United States means the United States, its territories, states, commonwealths, districts, and possessions, and all areas under the jurisdiction or...

7 CFR 1219.26 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1219.26 Section 1219.26 Agriculture..., AND INFORMATION Hass Avocado Promotion, Research, and Information Order Definitions § 1219.26 United States. United States means collectively the several 50 States of the United States, the District of...

7 CFR 1212.31 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1212.31 Section 1212.31 Agriculture..., Consumer Education, and Industry Information Order Definitions § 1212.31 United States. “United States... territories and possessions of the United States. ...

22 CFR 120.13 - United States.

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2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false United States. 120.13 Section 120.13 Foreign... United States. United States, when used in the geographical sense, includes the several states, the Commonwealth of Puerto Rico, the insular possessions of the United States, the District of Columbia, the...

31 CFR 592.311 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 592.311 Section 592... § 592.311 United States. The term United States, when used in the geographic sense, means the several States, the District of Columbia, and any commonwealth, territory, or possession of the United States. ...

Kraft pulping of industrial wood waste

Science.gov (United States)

Aziz. Ahmed; Masood. Akhtar; Gary C. Myers; Gary M. Scott

1998-01-01

Most of the approximately 25 to 30 million tons of industrial wood waste generated in the United States per year is burned for energy and/or landfilled. In this study, kraft pulp from industrial wood waste was evaluated and compared with softwood (loblolly pine, Douglas-fir) and hardwood (aspen) pulp. Pulp bleachability was also evaluated. Compared to loblolly pine...

7 CFR 1205.313 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1205.313 Section 1205.313 Agriculture... Research and Promotion Order Definitions § 1205.313 United States. United States means the 50 States of the United States of America. [31 FR 16758, Dec. 31, 1966. Redesignated at 56 FR 64472, Dec. 10, 1991] ...

31 CFR 542.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 542.310 Section 542.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and possessions...

31 CFR 548.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 548.310 Section 548.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and possessions...

31 CFR 546.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 546.310 Section 546.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....310 United States. The term United States means the United States, its territories and possessions...

31 CFR 586.318 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 586.318 Section 586...) KOSOVO SANCTIONS REGULATIONS General Definitions § 586.318 United States. The term United States means the United States, its territories and possessions, and all areas under the jurisdiction or authority...

31 CFR 537.318 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 537.318 Section 537.318 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....318 United States. The term United States means the United States, its territories and possessions...

31 CFR 585.316 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 585.316 Section 585.316 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 585.316 United States. The term United States means the United States, its...

31 CFR 575.319 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 575.319 Section 575.319 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....319 United States. The term United States means the United States, its territories and possessions...

31 CFR 539.312 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 539.312 Section 539.312 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 539.312 United States. The term United States means the United States, its...

31 CFR 551.309 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 551.309 Section 551.309 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF....309 United States. The term United States means the United States, its territories and possessions...

31 CFR 587.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 587.310 Section 587...) MILOSEVIC SANCTIONS REGULATIONS General Definitions § 587.310 United States. The term United States means the United States, its territories and possessions, and all areas under the jurisdiction or authority...

31 CFR 547.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 547.310 Section 547.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 547.310 United States. The term United States means the United States, its...

31 CFR 598.317 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 598.317 Section 598.317 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 598.317 United States. The term United States means the United States, its territories and...

31 CFR 596.312 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 596.312 Section 596.312 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... General Definitions § 596.312 United States. The term United States means the United States, including its...

31 CFR 538.314 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 538.314 Section 538.314 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 538.314 United States. The term United States means the United States, its territories and possessions...

31 CFR 543.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 543.310 Section 543.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 543.310 United States. The term United States means the United States, its territories and...

31 CFR 594.313 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 594.313 Section 594.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 594.313 United States. The term United States means the United States, its territories and...

31 CFR 588.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 588.310 Section 588.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 588.310 United States. The term United States means the United States, its territories and...

31 CFR 536.315 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 536.315 Section 536.315 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 536.315 United States. The term United States means the United States, its territories and...

31 CFR 544.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 544.310 Section 544.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 544.310 United States. The term United States means the United States, its...

31 CFR 545.313 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 545.313 Section 545.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... Definitions § 545.313 United States. The term United States means the United States, its territories and...

31 CFR 595.314 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 595.314 Section 595.314 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 595.314 United States. The term United States means the United States, its territories and possessions...

31 CFR 560.307 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 560.307 Section 560.307 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 560.307 United States. The term United States means the United States, including its territories and...

31 CFR 593.311 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 593.311 Section 593.311 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 593.311 United States. The term United States means the United States, its...

31 CFR 541.310 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 541.310 Section 541.310 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... § 541.310 United States. The term United States means the United States, its territories and possessions...

31 CFR 540.313 - United States.

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2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States. 540.313 Section 540.313 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE OF... REGULATIONS General Definitions § 540.313 United States. The term United States means the United States, its...

A Range-Wide Experiment to Investigate Nutrient and Soil Moisture Interactions in Loblolly Pine Plantations

Directory of Open Access Journals (Sweden)

Rodney E. Will

2015-06-01

Full Text Available The future climate of the southeastern USA is predicted to be warmer, drier and more variable in rainfall, which may increase drought frequency and intensity. Loblolly pine (Pinus taeda is the most important commercial tree species in the world and is planted on ~11 million ha within its native range in the southeastern USA. A regional study was installed to evaluate effects of decreased rainfall and nutrient additions on loblolly pine plantation productivity and physiology. Four locations were established to capture the range-wide variability of soil and climate. Treatments were initiated in 2012 and consisted of a factorial combination of throughfall reduction (approximate 30% reduction and fertilization (complete suite of nutrients. Tree and stand growth were measured at each site. Results after two growing seasons indicate a positive but variable response of fertilization on stand volume increment at all four sites and a negative effect of throughfall reduction at two sites. Data will be used to produce robust process model parameterizations useful for simulating loblolly pine growth and function under future, novel climate and management scenarios. The resulting improved models will provide support for developing management strategies to increase pine plantation productivity and carbon sequestration under a changing climate.

7 CFR 1206.23 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1206.23 Section 1206.23 Agriculture... INFORMATION Mango Promotion, Research, and Information Order Definitions § 1206.23 United States. United... Rico, and the territories and possessions of the United States. ...

7 CFR 1215.20 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1215.20 Section 1215.20 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS... United States. United States means all of the States. Popcorn Board ...

Enzymatic hydrolysis of loblolly pine: effects of cellulose crystallinity and delignification

Science.gov (United States)

Umesh P. Agarwal; J.Y. Zhu; Sally A. Ralph

2013-01-01

Hydrolysis experiments with commercial cellulases have been performed to understand the effects of cell wall crystallinity and lignin on the process. In the focus of the paper are loblolly pine wood samples, which were systematically delignified and partly ball-milled, and, for comparison, Whatman CC31 cellulose samples with different crystallinities. In pure cellulose...

Planting nonlocal seed sources of loblolly pine - managing benefits and risks

Science.gov (United States)

Clem Lambeth; Steve Mckeand; Randy Rousseau; Ron Schmidtling

2005-01-01

Seed source testing of loblolly pine (Pinus taeda), which began in the 1920s, has allowed large realized genetic gains from using nonlocal seed sources in operational plantations. Seed source testing continues, and deployment guidlines are being refined. some general effects of seed source movement can be described, but there are still gaps in (1)...

7 CFR 1280.127 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1280.127 Section 1280.127 Agriculture... INFORMATION ORDER Lamb Promotion, Research, and Information Order Definitions § 1280.127 United States. United States means collectively the 50 States and the District of Columbia. ...

Simulated Summer Rainfall Variability Effects on Loblolly Pine (Pinus taeda Seedling Physiology and Susceptibility to Root-Infecting Ophiostomatoid Fungi

Directory of Open Access Journals (Sweden)

Jeff Chieppa

2017-03-01

Full Text Available Seedlings from four families of loblolly pine (Pinus taeda L. were grown in capped open-top chambers and exposed to three different weekly moisture regimes for 13 weeks. Moisture regimes varied in intensity and frequency of simulated rainfall (irrigation events; however, the total amounts were comparable. These simulated treatments were chosen to simulate expected changes in rainfall variability associated with climate change. Seedlings were inoculated with two root-infecting ophiostomatoid fungi associated with Southern Pine Decline. We found susceptibility of loblolly pine was not affected by water stress; however, one family that was most sensitive to inoculation was also most sensitive to changes in moisture availability. Many studies have examined the effects of drought (well-watered vs. dry conditions on pine physiology and host-pathogen interactions but little is known about variability in moisture supply. This study aimed to elucidate the effects of variability in water availability, pathogen inoculation and their interaction on physiology of loblolly pine seedlings.

Modeling corewood-outerwood transition in loblolly pine using wood specific gravity

Science.gov (United States)

Christian R. Mora; H. Lee Allen; Richard F. Daniels; Alexander Clark

2007-01-01

A modified logistic function was used for modeling specific-gravity profiles obtained from X-ray densitometry analysis in 675 loblolly pine (Pinus taeda L.) trees in four regeneration trials. Trees were 21 or 22 years old at the time of the study. The function was used for demarcating corewood, transitional, and outerwood zones. Site and silvicultural effects were...

Biomass Production and Nitrogen Recovery after Fertilization of Young Loblolly Pines

Science.gov (United States)

J. B. Baker; G. L. Switzer; L. E. Nelson

1974-01-01

Ammonium nitrate applied at rates of 112 and 224 kg of N/ha in successive years to different areas of a young loblolly pine (Pinus taeda L.) plantation increased aboveground biomass by 25% and N accumulation by 30%. Fertilization at plantation age 3 resulted in significantly greater biomass and N accumulations in the pine; fertilization at age 4...

7 CFR 1260.108 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1260.108 Section 1260.108 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS... Promotion and Research Order Definitions § 1260.108 United States. United States means the 50 States and the...

7 CFR 1221.32 - United States.

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2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1221.32 Section 1221.32 Agriculture... INFORMATION ORDER Sorghum Promotion, Research, and Information Order Definitions § 1221.32 United States. United States or U.S. means collectively the 50 States, the District of Columbia, the Commonwealth of...

7 CFR 1216.30 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1216.30 Section 1216.30 Agriculture... INFORMATION ORDER Peanut Promotion, Research, and Information Order Definitions § 1216.30 United States. United States means collectively the 50 states, the District of Columbia, the Commonwealth of Puerto Rico...

7 CFR 1218.22 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1218.22 Section 1218.22 Agriculture... INFORMATION ORDER Blueberry Promotion, Research, and Information Order Definitions § 1218.22 United States. United States means collectively the 50 states, the District of Columbia, the Commonwealth of Puerto Rico...

Soil CO2 efflux in loblolly pine (Pinus taeda L.) plantations on the virginia Piedmond and South Carolina coastal plain over a rotation-length chronosequence

Science.gov (United States)

Christopher M. Gough; John R. Seiler; P. Eric Wiseman; Christopher A. Maier

2005-01-01

We measured soil surface CO2 efflux (Fx) in loblolly pine stands (Pinus taeda L.) located on the Virginia Piedmont (VA) and South Carolina Coastal Plain (SC) in efforts to assess the impact climate, productivity, and cultural practices have on Fs in the managed loblolly pine...

7 CFR 1210.315 - United States.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States. 1210.315 Section 1210.315 Agriculture... PLAN Watermelon Research and Promotion Plan Definitions § 1210.315 United States. United States means each of the several States and the District of Columbia. [60 FR 10797, Feb. 28, 1995] National...

Relationships between stem CO2 efflux, substrate supply, and growth in young loblolly pine trees

Science.gov (United States)

Chris A. Maier; Kurt H. Johnsen; Barton D. Clinton; Kim H. Ludovici

2009-01-01

We examined the relationships between stem CO2 efflux (Es), diametergrowth, and nonstructural carbohydrate concentration in loblolly pine trees. Carbohydratesupply was altered via stem girdling during rapid stem growth in the

Search for major genes with progeny test data to accelerate the development of genetically superior loblolly pine

Energy Technology Data Exchange (ETDEWEB)

NCSU

2003-12-30

This research project is to develop a novel approach that fully utilized the current breeding materials and genetic test information available from the NCSU-Industry Cooperative Tree Improvement Program to identify major genes that are segregating for growth and disease resistance in loblolly pine. If major genes can be identified in the existing breeding population, they can be utilized directly in the conventional loblolly pine breeding program. With the putative genotypes of parents identified, tree breeders can make effective decisions on management of breeding populations and operational deployment of genetically superior trees. Forest productivity will be significantly enhanced if genetically superior genotypes with major genes for economically important traits could be deployed in an operational plantation program. The overall objective of the project is to develop genetic model and analytical methods for major gene detection with progeny test data and accelerate the development of genetically superior loblolly pine. Specifically, there are three main tasks: (1) Develop genetic models for major gene detection and implement statistical methods and develop computer software for screening progeny test data; (2) Confirm major gene segregation with molecular markers; and (3) Develop strategies for using major genes for tree breeding.

Comparison of four harvesting systems in a loblolly pine plantation

Science.gov (United States)

J. Klepac; Dana Mitchell

2016-01-01

Felling and skidding operations were monitored while clearcut harvesting a 12-acre area of a 14-year old loblolly pine (Pinus taeda) plantation. The study area contained 465 trees per acre for trees 2.0 inches Diameter at Breast Height (DBH) and larger with a Quadratic Mean Diameter (QMD) of 7.26 inches. Two feller-bunchers (tracked and rubber-tired) and two skidders (...

Guying to prevent wind sway influences loblolly pine growth and wood properties

Science.gov (United States)

James D. Burton; Diana M. Smith

1972-01-01

Restraining young loblolly pine (Pinus taeda L.) trees from normal swaying in the wind markedly reduced radial growth in the immobilized portion of the bole and accelerated it in the upper, free-swaying portion. Guying also reduced specific gravity, number of earlywood and latewood tracheids, latewood tracheid diameter, and amount of compression wood...

Irrigation, fertilization and initial substrate quality effects on decomposing Loblolly pine litter chemistry

Science.gov (United States)

Felipe G. Sanchez

2004-01-01

Changes in carbon chemistry (i.e., carbon compound classes such as aromatics, phenolics, etc.) of loblolly pine (Pinus taeda L.) litter were examined during three years of decomposition under factorial combinations of irrigation and fertilization treatments. Cross polarization magic angle spinning 13C nuclear magnetic resonance...

Investigating the reactivity of pMDI with wood cell walls using high-resolution solution-state NMR spectroscopy

Science.gov (United States)

Daniel J. Yelle; John Ralph; Charles R. Frihart

2009-01-01

The objectives of this study are the following: (1) Use solution-state NMR to assign contours in HSQC spectra of the reaction products between pMDI model compounds and: (a) lignin model compounds, (b) milled-wood lignin, (c) ball-milled wood, (d) microtomed loblolly pine; (2) Determine where and to what degree urethane formation occurs with loblolly pine cell wall...

Timber, Browse, and Herbage on Selected Loblolly-Shortleaf Pine-Hardwood Forest Stands

Science.gov (United States)

Gale L. Wolters; Alton Martin; Warren P. Clary

1977-01-01

A thorough vegetation inventory was made on loblolly-shortleaf pine-hardwood stands scheduled by forest industry for clearcutting, site preparation, and planting to pine in north central Louisiana and southern Arkansas. Overstory timber, on the average, contained about equal proportions of softwood and hardwood basal area. Browse plants ranged from 5,500 to over 70,...

Harvest intensity and competition control impacts on loblolly pine fusiform rust incidence

Science.gov (United States)

Robert J. Eaton; Paula Spaine; Felipe G. Sanchez

2006-01-01

The Long Term Soil Productivity experiment tests the effects of soil compaction, surface organic matter removal, and understory control on net primary productivity. An unintended consequence of these treatments may be an effect on the incidence of fusiform rust [Cronartium quercuum (Berk.) Miy. ex Shirai f. sp. fusiforme Burdsall et Snow]. Loblolly pine (Pinus...

Cultural intensity and planting density effects on individual tree stem growth, stand and crown attributes, and stand dynamics in thinned loblolly pine plantations during the age 12- to age 15- year period in the Upper Coastal Plain and Piedmont of the Southeastern United States

Science.gov (United States)

Evan Johnson; Michael Kane; Dehai Zhao; Robert Teskey

2015-01-01

Three existing loblolly pine (Pinus taeda L.) installations in the Plantation Management Research Cooperative's Upper Coastal Plain/Piedmont Culture Density Study were used to examine the effects of two cultural intensities, four initial planting densities, and their interactions on stem growth at the individual tree level from age 12 to 15 years and at the stand...

Toll Facilities in the United States - Toll Facilities in the United States

Data.gov (United States)

Department of Transportation — Biennial report containing selected information on toll facilities in the United States that has been provided to FHWA by the States and/or various toll authorities...

Growth following pruning of young loblolly pine trees: some early results

Science.gov (United States)

Ralph L. Amateis; Harold E. Burkhart

2006-01-01

In the spring of 2000, a designed experiment was established to study the effects of pruning on juvenile loblolly pine (Pinus taeda L.) tree growth and the subsequent formation of mature wood. Trees were planted at a 3 m x 3 m square spacing in plots of 6 rows with 6 trees per row, with the inner 16 trees constituting the measurement plot. Among the...

Specific gravity responses of slash and loblolly pine following mid-rotation fertilization

Science.gov (United States)

Kimberly R. Love-Myers; Alexander Clark III; Laurence R. Schimleck; Eric J. Jokela; Richard F. Daniels

2009-01-01

Wood quality attributes were examined in six stands of slash pine (Pinus elliottii Engelm. var. elliottii) and loblolly pine (P. taeda L.) in the lower Coastal Plain of Georgia and Florida. Several plots comprised each stand, and each plot was divided so that it received three fertilizer treatments: a control treatment with herbaceous weed control at planting...

The effects of irrigation and fertilization on specific gravity of loblolly pine

Science.gov (United States)

K. R. Love-Myers; Alexander Clark; L. R. Schimleck; P. M. Dougherty; R. F. Daniels

2010-01-01

The effects of two treatments, irrigation and fertilization, were examined on specific gravity (SG)-related wood properties of loblolly pine trees (Pinus taeda L.) grown in Scotland County, North Carolina. The effects on the core as a whole, on the juvenile core, on the mature core, and from year to year were all analyzed. The results indicate that fertilization...

Effect of midrotation fertilization on growth and specific gravity of loblolly pine

Science.gov (United States)

Finto Antony; Lewis Jordan; Richard F. Daniels; Laurence R. Schimleck; Alexander Clark III; Daniel B. Hall

2009-01-01

Wood properties and growth were measured on breast-height cores and on disks collected at different heights from a thinned and fertilized midrotation loblolly pine (Pinus taeda L.) plantation in the lower Coastal Plain of North Carolina. The study was laid out in a randomized complete-block design receiving four levels of nitrogen (N) fertilizer: unfertilized...

Oil Vulnerabilities and United States Strategy

Science.gov (United States)

2007-02-08

Mazda, Mercedes - Benz , Ford, Mercury, and Nissan offer flexible fuel vehicles in the United States. Ethanol is currently produced in the United States...USAWC STRATEGY RESEARCH PROJECT OIL VULNERABILITIES AND UNITED STATES STRATEGY by Colonel Shawn P. Walsh...Colleges and Schools, 3624 Market Street, Philadelphia, PA 19104, (215) 662-5606. The Commission on Higher Education is an institutional accrediting

Soil Co2 Efflux and Soil Carbon Content as Influenced by Thinning in Loblolly Pine Plantations on the Piedmont of Virginia

OpenAIRE

Selig, Marcus Franklin

2003-01-01

The thinning of loblolly pine plantations has a great potential to influence the fluxes and storage of carbon within managed stands. This study looked at the effects of thinning on aboveground carbon and mineral soil carbon storage, 14-years after the thinning of an 8-year-old loblolly pine plantation on the piedmont of Virginia. The study also examined soil respiration for one year following the second thinning of the same stand at age twenty-two. The study was conducted using three repli...

31 CFR 596.313 - United States person.

Science.gov (United States)

2010-07-01

... FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM LIST GOVERNMENTS SANCTIONS REGULATIONS General Definitions § 596.313 United States person. The term United States person means any United States...

Nuclear development in the United States

International Nuclear Information System (INIS)

Brewer, S.

1983-01-01

The history of the nuclear development in the United States has been one of international cooperation relations so far. The United States is to offer the technical information on atomic energy utilization to foreign countries in exchange for the guarantee that they never attempt to have or develop nuclear weapons. Actually, the United States has supplied the technologies on nuclear fuel cycle and other related fields to enable other countries to achieve economical and social progress. The Department of Energy clarified the public promise of the United States regarding the idea of international energy community. The ratio of nuclear power generation to total electric power supply in the United States exceeded 12%, and will exceed 20% by 1990. Since 1978, new nuclear power station has not been ordered, and some of the contracted power stations were canceled. The atomic energy industry in the United States prospered at the beginning of 1970s, but lost the spirit now, mainly due to the institutional problems rather than the technical ones. As the policy of the government to eliminate the obstacles, the improvement of the procedure for the permission and approval, the establishment of waste disposal capability, the verification of fast breeder reactor technology and the promotion of commercial fuel reprocessing were proposed. The re-establishment of the United States as the reliable supplier of atomic energy service is the final aim. (Kako, I.)

78 FR 70274 - United States Travel and Tourism Advisory Board: Meeting of the United States Travel and Tourism...

Science.gov (United States)

2013-11-25

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism Advisory Board: Meeting of the United States Travel and Tourism Advisory Board AGENCY: International Trade... the schedule and agenda for an open meeting of the United States Travel and Tourism Advisory Board...

78 FR 3398 - United States Travel and Tourism Advisory Board: Meeting of the United States Travel and Tourism...

Science.gov (United States)

2013-01-16

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism Advisory Board: Meeting of the United States Travel and Tourism Advisory Board AGENCY: International Trade... the schedule and agenda for an open meeting of the United States Travel and Tourism Advisory Board...

United States housing, 2012

Science.gov (United States)

Delton Alderman

2013-01-01

Provides current and historical information on housing market in the United States. Information includes trends for housing permits and starts, housing completions for single and multifamily units, and sales and construction. This report will be updated annually.

Compacting coastal plain soils changes midrotation loblolly pine allometry by reducing root biomass

Science.gov (United States)

Kim H. Ludovici

2008-01-01

Factorial combinations of soil compaction and organic matter removal were replicated at the Long Term Site Productivity study in the Croatan National Forest, near New Bern, North Carolina, USA. Ten years after planting, 18 preselected loblolly pine (Pinus taeda L.) trees were destructively harvested to quantify treatment effects on total above- and...

Reapplication of Silvicultural Treatments Impacts Phenology and Photosynthetic Gas Exchange of Loblolly Pine

Science.gov (United States)

Zhenmin Tang; Jim L. Chambers; Mary A. Sword; Shufang Yu; James P. Barnett

2004-01-01

A loblolly pine (Pinus taeda L.) plantation, established in 1981, was thinned and fertilized in 1988. Thinning and fertilization treatments were applied again in early 1995. The morphology of current flushes and needles were measured between March and October in 1995 through 1997. Physiological responses were monitored in the upper and lower crowns....

The influence of nutrient and water availability on carbohydrate storage in loblolly pine

Science.gov (United States)

K.H. Ludovici; H.L. Allen; T.J. Albaugh; P.M. Dougherty

2002-01-01

We quantified the effects of nutrient and water availability on monthly whole-tree carbohydrate budgets and determined allocation patterns of storage carbohydrates in loblolly pine (Pinus taeda) to test site resource impacts on internal carbon (C) storage. A factorial combination of two nutrient and two irrigation treatments were imposed on a 7-year...

Whole-tree bark and wood properties of loblolly pine from intensively managed plantations

Science.gov (United States)

Finto Antony; Laurence R. Schimleck; Richard F. Daniels; Alexander Clark; Bruce E. Borders; Michael B. Kane; Harold E. Burkhart

2015-01-01

A study was conducted to identify geographical variation in loblolly pine bark and wood properties at the whole-tree level and to quantify the responses in whole-tree bark and wood properties following contrasting silvicultural practices that included planting density, weed control, and fertilization. Trees were destructively sampled from both conventionally managed...

Diameter Growth of Loblolly Pine Trees as Affected by Soil-Moisture Availibility

Science.gov (United States)

John R. Bassett

1964-01-01

In a 30-year-old even-aged stand of loblolly pine on a site 90 loessial soil in southeast Arkansas during foul growing seasons, most trees on plots thinned to 125 square feet of basal area per acre increased in basal area continuously when, under the crown canopy, available water in the surface foot remained above 65 percent. Measurable diameter growth ceased when...

31 CFR 500.520 - Payments from accounts of United States citizens in employ of United States in foreign countries...

Science.gov (United States)

2010-07-01

... States citizens in employ of United States in foreign countries and certain other persons. 500.520..., Authorizations and Statements of Licensing Policy § 500.520 Payments from accounts of United States citizens in employ of United States in foreign countries and certain other persons. (a) Banking institutions within...

31 CFR 515.520 - Payments from accounts of United States citizens in employ of United States in foreign countries...

Science.gov (United States)

2010-07-01

... States citizens in employ of United States in foreign countries and certain other persons. 515.520..., Authorizations, and Statements of Licensing Policy § 515.520 Payments from accounts of United States citizens in employ of United States in foreign countries and certain other persons. (a) Banking institutions within...

TRAINING OF THE STATE PRESIDENT'S UNIT

African Journals Online (AJOL)

The primary function of the State President's Unit is to protect the head of state - not his person as is generally believed, but his authority over the state. Ironically, the ceremonial performances of the State President's Unit lead people to believe that they are only capable of doing drill exer- cises. However, upon investigating.

Mapping fusiform rust resistance genes within a complex mating design of loblolly pine

Science.gov (United States)

Tania Quesada; Marcio F.R. Resende Jr.; Patricio Munoz; Jill L. Wegrzyn; David B. Neale; Matias Kirst; Gary F. Peter; Salvador A. Gezan; C.Dana Nelson; John M. Davis

2014-01-01

Fusiform rust resistance can involve gene-for-gene interactions where resistance (Fr) genes in the host interact with corresponding avirulence genes in the pathogen, Cronartium quercuum f.sp. fusiforme (Cqf). Here, we identify trees with Fr genes in a loblolly pine population derived from a complex mating design challenged with two Cqf inocula (one gall and 10 gall...

Biological and Economic Productivity of Mixed-Aged Loblolly Pine Stands in the South

Science.gov (United States)

Ronald Raunikar; Joseph Buongiorno; Jeffrey P. Prestemon; Karen Lee-Abt

1999-01-01

The financial performance of the 991 sample plots of uneven-aged loblolly-hardwood stands in the Central South FIA database examined in this report depend crucially on real price trends. Equivalent annual income (EAI) is the measure of economic performance. The regional market stumpage price data are from the Timber Mart-South database. For this set of prices, a...

Regional calibration models for predicting loblolly pine tracheid properties using near-infrared spectroscopy

Science.gov (United States)

Mohamad Nabavi; Joseph Dahlen; Laurence Schimleck; Thomas L. Eberhardt; Cristian Montes

2018-01-01

This study developed regional calibration models for the prediction of loblolly pine (Pinus taeda) tracheid properties using near-infrared (NIR) spectroscopy. A total of 1842 pith-to-bark radial strips, aged 19–31 years, were acquired from 268 trees from 109 stands across the southeastern USA. Diffuse reflectance NIR spectra were collected at 10-mm...

Water availability and genetic effects on wood properties of loblolly pine (Pinus taeda)

Science.gov (United States)

C. A. Gonzalez-Benecke; T. A. Martin; Alexander Clark; G. F. Peter

2010-01-01

We studied the effect of water availability on basal area growth and wood properties of 11-year-old loblolly pine (Pinus taeda L.) trees from contrasting Florida (FL) (a mix of half-sib families) and South Carolina coastal plain (SC) (a single, half-sib family) genetic material. Increasing soil water availability via irrigation increased average wholecore specific...

An annotated genetic map of loblolly pine based on microsatellite and cDNA markers

Science.gov (United States)

Previous loblolly pine (Pinus taeda L.) genetic linkage maps have been based on a variety of DNA polymorphisms, such as AFLPs, RAPDs, RFLPs, and ESTPs, but only a few SSRs (simple sequence repeats), also known as simple tandem repeats or microsatellites, have been mapped in P. taeda. The objective o...

31 CFR 515.334 - United States national.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false United States national. 515.334 Section 515.334 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) OFFICE... of the United States, and which has its principal place of business in the United States. [61 FR...

7 CFR 1212.32 - United States Customs Service.

Science.gov (United States)

2010-01-01

... 7 Agriculture 10 2010-01-01 2010-01-01 false United States Customs Service. 1212.32 Section 1212... § 1212.32 United States Customs Service. “United States Customs Service” or “Customs” means the United States Customs and Border Protection, an agency of the Department of Homeland Security. Honey Packers and...

Tip moth control and loblolly pine growth in intensive pine culture: four year results

Science.gov (United States)

David L. Kulhavy; Jimmie L. Yeiser; L. Allen Smith

2006-01-01

Twenty-two treatments replicated four times were applied to planted loblolly pine, Pinus taeda L., on bedded industrial forest land in east Texas for measurement of growth impact of Nantucket pine tip moth (NPTM), Rhyacionia frustrana Comstock, and effects on pine growth over 2 years. Treatments were combinations of Velpar®,...

Longleaf and loblolly pine seedlings respond differently to soil compaction, water content, and fertilization

Science.gov (United States)

D. Andrew Scott; James A. Burger

2014-01-01

Aims Longleaf pine (Pinus palustris Mill.) is being restored across the U.S. South for a multitude of ecological and economic reasons, but our understanding of longleaf pine’s response to soil physical conditions is poor. On the contrary, our understanding of loblolly pine (Pinus taeda L.) root and...

Short-term effects of fertilization on photosynthesis and leaf morphology of field-grown loblolly pine following long-term exposure to elevated CO2 concentration

International Nuclear Information System (INIS)

Maier, C.A.; Palmroth, S.; Ward, E.

2008-01-01

This study examined the effects of an initial nitrogen (N) fertilizer application on the upper-canopy needle morphology and gas exchange of a loblolly pine tree exposed to elevated carbon dioxide (CO 2 ) concentrations over a period of 9 years. Plots in the study were split, and one half of each plot was fertilized with 112 kg ha -1 of elemental N. Measurements included needle length, mass per unit area, N concentrations on a mass and area basis, light-saturated net photosynthesis per unit leaf area, and per unit mass and leaf conductance. Results of the study showed that fertilization had little impact on needle length, mass per unit area, or leaf conductance. Results suggested that although both needle age classes accumulated N following fertilization, current-year foliage incorporated N into its photosynthetic machinery, while 1-year old foliage stored N. No significant interactions were observed between elevated CO 2 and light-saturated net photosynthesis per unit leaf area. The study found few fertilization and CO 2 interaction effects on leaf physiology and morphology. 54 refs., 3 tabs., 3 figs

Inoculation of Loblolly Pine Seedlings at Planting with Basidiospores of Ectomycorrhizal Fungi in Chip Form

Science.gov (United States)

Peter R. Beckjord; Marla S. McIntosh; Edward Hacskaylo; John H. Jr. Melhuish; John H. Jr. Melhuish

1984-01-01

Basidiospores of the ectomycorrhizae-forming fungi Pisolithus tinctorius and Scleroderma auranteum incorporated into an organic hydrocolloid can be used successfully in field inoculation. Containerized loblolly pine seedlings were inoculated during outplanting by this method. This study showed that basidiospore chips were effective inocula in this investigation.

Nuclear power in the United States

International Nuclear Information System (INIS)

Johnston, J.B.

1985-01-01

All over the world except in the United States, nuclear energy is a low cost, secure, environmentally acceptable form of energy. In the United States, civilian nuclear power is dead. 112 nuclear power plants have been abandoned or cancelled in the last decade, and there has been no new order for nuclear plants since 1978. It will be fortunate to have 125 operating nuclear plants in the United States in the year 2000. There are almost 90 completed nuclear power plants and about 45 under construction in the United States, but several of those under construction will eventually be abandoned. About 20 % of the electricity in the United States will be generated by nuclear plants in 2000 as compared with 13 % supplied in the last year. Under the present regulatory and institutional arrangement, American electric utilities would not consider to order a new nuclear power plant. Post-TMI nuclear plants became very expensive, and there is also ideological opposition to nuclear power. Coal-firing plants are also in the similar situation. The uncertainty about electric power demand, the cost of money, the inflation of construction cost and regulation caused the situation. (Kako, I.)

Teen Pregnancy in the United States

Science.gov (United States)

... United States: the contribution of abstinence and improved contraceptive use. Am J Public Health. 2007;97(1):150-6. Lindberg LD, Santelli JS, Desai, S. Understanding the Decline in Adolescent Fertility in the United States, 2007–2012. J ...

Ice Damage in a Georgia Planting of Loblolly Pine from Different Seed Sources

Science.gov (United States)

Earle P. Jones; Osborn O. Wells

1969-01-01

After a severe ice storm in south-central Georgia, the degree of ice damage in a provenance test planting of 11-year-old loblolly pines varied considerably among the nine widely seperated seed sources represented. Damage was less among tress from the colder, more inland locations than among tress from coastal areas where the climate is more moderate. In terms of...

Assessment of loblolly pine decline and site conditions on Fort Benning Military Reservation, GA

Science.gov (United States)

Roger D. Menard; Lori G. Eckhardt; Nolan J. Hess

2010-01-01

A decline of loblolly pine (Pinus taeda L.), characterized by expanding areas of declining and dead trees, has become prevalent at Fort Benning, GA. A 3-year study was conducted to determine the kinds of fungi, insects, and site disturbances associated with this problem. The insects Dendroctonus terebrans, Hylastes salebrosus, H. tenuis, Pachylobius picivorus...

Immigration Enforcement Within the United States

Science.gov (United States)

2006-04-06

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Policy Issues...Remained in the United States, (Washington: Center for Immigration Studies, May 2002). Immigration Enforcement Within the United States Introduction ...interior enforcement lack a border component. For example, fugitive taskforces, investigations of alien slavery and sweatshops , and employer sanctions do

Eleventh-year results of fertilization, herbaceous, and woody plant control in a loblolly pine plantation

Science.gov (United States)

James D. Haywood; Allan E. Tiarks

1990-01-01

Through 11 years, fertilization at planting significantly increased the stemwood volume (outside bark) per loblolly pine (Pinus taeda L.) on an intensively prepared moderately well-drained fine sandy loam site in northern Louisiana. Four years of herbaceous plant control significantly increased pine survival, and because herbaceous plant control...

Alternative Parameterization of the 3-PG Model for Loblolly Pine: A Regional Validation and Climate Change Assessment on Stand Productivity

Science.gov (United States)

Yang, J.; Gonzalez-Benecke, C. A.; Teskey, R. O.; Martin, T.; Jokela, E. J.

2015-12-01

Loblolly pine (Pinus taeda L.) is one of the fastest growing pine species. It has been planted on more than 10 million ha in the southeastern U.S., and also been introduced into many countries. Using data from the literature and long-term productivity studies, we re-parameterized the 3-PG model for loblolly pine stands. We developed new functions for estimating NPP allocation dynamics, canopy cover and needlefall dynamics, effects of frost on production, density-independent and density-dependent tree mortality, biomass pools at variable starting ages, and the fertility rating. New functions to estimate merchantable volume partitioning were also included, allowing for economic analyses. The fertility rating was determined as a function of site index (mean height of dominant trees at age=25 years). We used the largest and most geographically extensive validation dataset for this species ever used (91 pots in 12 states in U.S. and 10 plots in Uruguay). Comparison of modeled to measured data showed robust agreement across the natural range in the U.S., as well as in Uruguay, where the species is grown as an exotic. Using the new set of functions and parameters with downscaled projections from twenty different climate models, the model was applied to assess the impact of future climate change scenarios on stand productivity in the southeastern U.S.

Transgenic loblolly pine (Pinus taeda L.) plants expressing a modified delta-endotoxin gene of Bacillus thuringiensis with enhanced resistance to Dendrolimus punctatus Walker and Crypyothelea formosicola Staud.

Science.gov (United States)

Tang, Wei; Tian, Yingchuan

2003-02-01

A synthetic version of the CRY1Ac gene of Bacillus thuringiensis has been used for the transformation of loblolly pine (Pinus taeda L.) using particle bombardment. Mature zygotic embryos were used to be bombarded and to generate organogenic callus and transgenic regenerated plants. Expression vector pB48.215 DNA contained a synthetic Bacillus thuringiensis (B.t.) CRY1Ac coding sequence flanked by the double cauliflower mosaic virus (CaMV) 35S promoter and nopaline synthase (NOS) terminator sequences, and the neomycin phosphotransferase II (NPTII) gene controlled by the promoter of the nopaline synthase gene was introduced into loblolly pine tissues by particle bombardment. The transformed tissues were proliferated and selected on media with kanamycin. Shoot regeneration was induced from the kanamycin-resistant calli, and transgenic plantlets were then produced. More than 60 transformed plants from independent transformation events were obtained for each loblolly pine genotype tested. The integration and expression of the introduced genes in the transgenic loblolly pine plants was confirmed by polymerase chain reactions (PCR) analysis, by Southern hybridization, by Northern blot analysis, and by Western blot analysis. Effective resistance of transgenic plants against Dendrolimus punctatus Walker and Crypyothelea formosicola Staud was verified in feeding bioassays with the insects. The transgenic plants recovered could represent a good opportunity to analyse the impact of genetic engineering of pine for sustainable resistance to pests using a B. thuringiensis insecticidal protein. This protocol enabled the routine transformation of loblolly pine plants that were previously difficult to transform.

Crown characteristics of juvenile loblolly pine 6 years after application of thinning and fertilization

Science.gov (United States)

Shufang Yu; Jim L. Chambers; Zhenmin Tang; James P. Barnett

2003-01-01

Total foliage dry mass and leaf area at the canopy hierarchical level of needle, shoot, branch and crown were measured in 48 trees harvested from a 14-year-old loblolly pine (Pinus taeda L.) plantation, six growing seasons after thinning and fertilization treatments. In the unthinned treatment, upper crown needles were heavier and had more leaf area...

Risk assessment with current deployment strategies for fusiform rust-resistant loblolly and slash pines

Science.gov (United States)

Floyd Bridgwater; Tom Kubisiak; Tom Byram; Steve Mckeand

2004-01-01

In the southeastern USA, fusiform rust resistant loblolly and slash pines may be deployed as 1) ulked seed orchard mixes. 2) half-sibling (sib) family mixtures. 3) single half-sib families. 4) full-sib cross seeds or as 6) clones of individual genotypes. These deployment types are respectively greater genetic gains from higher selection intensity. Currently, bulked...

Disking and Prescribed Burning: Sixth-Year Residual Effects on Loblolly Pine and Competing Vegetation

Science.gov (United States)

Kenneth E. Trousdell

1970-01-01

In the Virginia Coastal Plain, the effects of disking and of three series of prescribed burns on crown coverage and height of regenerating loblolly pine (Pinus taeda L.) and competing hardwoods and shrubs were compared after 6 years. One winter burn followed by three annual summer burns just before harvesting was the site preparation most effective...

United States advanced technologies

International Nuclear Information System (INIS)

Longenecker, J.R.

1985-01-01

In the United States, the advanced technologies have been applied to uranium enrichment as a means by which it can be assured that nuclear fuel cost will remain competitive in the future. The United States is strongly committed to the development of advanced enrichment technology, and has brought both advanced gas centrifuge (AGC) and atomic vapor laser isotope separation (AVLIS) programs to a point of significant technical refinement. The ability to deploy advanced technologies is the basis for the confidence in competitive future price. Unfortunately, the development of advanced technologies is capital intensive. The year 1985 is the key year for advanced technology development in the United States, since the decision on the primary enrichment technology for the future, AGC or AVLIS, will be made shortly. The background on the technology selection process, the highlights of AGC and AVLIS programs and the way to proceed after the process selection are described. The key objective is to maximize the sales volume and minimize the operating cost. This will help the utilities in other countries supply low cost energy on a reliable, long term basis. (Kako, I.)

Mid-rotation silviculture timing influences nitrogen mineralization of loblolly pine plantations in the mid-south USA

Science.gov (United States)

Michael A. Blazier; D. Andrew Scott; Ryan Coleman

2015-01-01

Intensively managed loblolly pine (Pinus taeda L.) plantations often develop nutrient deficiencies near mid-rotation. Common silvicultural treatments for improving stand nutrition at this stage include thinning, fertilization, and vegetation control. It is important to better understand the influence of timing fertilization and vegetation control...

Nitrogen availability alters macrofungal basidiomycete Blackwell Publishing, Ltd. community structure in optimally fertilized loblolly pine forests

Science.gov (United States)

Ivan P. Edwards; Jennifer L. Cripliver; Andrew R. Gillespie; Kurt H. Johnsen; M. Scholler; Ronald F. Turco

2004-01-01

We investigated the effect of an optimal nutrition strategy designed to maximize loblolly pine (Pinus taeda) growth on the rank abundance structure and diversity of associated basidiomycete communities.We conducted both small- and large-scale below-ground surveys 10 years after the initiation of optimal...

Prescribed burning and mastication effects on surface fuels in southern pine beetle-killed loblolly pine plantations

Science.gov (United States)

Aaron D. Stottlemyer; Thomas A. Waldrop; G. Geoff Wang

2015-01-01

Surface fuels were characterized in loblolly pine (Pinus taeda L.) plantations severely impacted by southern pine beetle (Dendroctonus frontalis Ehrh.) (SPB) outbreaks in the upper South Carolina Piedmont. Prescribed burning and mastication were then tested as fuel reduction treatments in these areas. Prescribed burning reduced...

The United States and the Arab Gulf Monarchies

International Nuclear Information System (INIS)

Kechichian, J.A.

1999-01-01

The United States has enduring strategic interests in the Persian Gulf region. To understand these interests and the Usa policy towards the Arab Gulf Monarchies, the french institute of international relations (IFRI) proposes this document. The following chapters are detailed: the United States and the Arab Gulf Monarchies, overview, Chief Unites States Objective: Access to oil, re-evaluating United States Foreign Policy in the Gulf, the second term (Usa strategy). (A.L.B.)

Silvicultural treatments for converting loblolly pine to longleaf pine dominance: Effects on planted longleaf pine seedlings

Science.gov (United States)

Huifeng Hu; G.Geoff Wang; Joan L. Walker; Benjamin O. Knapp

2012-01-01

A field study was installed to test silvicultural treatments for establishing longleaf pine (Pinus palustris Mill) in loblolly pine (P. taeda L.) stands. Harvesting was used to create seven canopy treatments, four with uniformly distributed canopies at different residual basal areas [Control (16.2 m2/ha),...

Examination of water phase transitions in Loblolly pine and cell wall components by differential scanning calorimetry

Science.gov (United States)

Samuel L. Zelinka; Michael J. Lambrecht; Samuel V. Glass; Alex C. Wiedenhoeft; Daniel J. Yelle

2012-01-01

This paper examines phase transformations of water in wood and isolated wood cell wall components using differential scanning calorimetry with the purpose of better understanding "Type II water" or "freezable bound water" that has been reported for cellulose and other hydrophilic polymers. Solid loblolly pine (Pinus taeda...

78 FR 46686 - Privacy Act of 1974; Treasury/United States Mint .013-United States Mint National Electronic...

Science.gov (United States)

2013-08-01

... available publicly. FOR FURTHER INFORMATION CONTACT: For general questions and privacy issues, please... DEPARTMENT OF THE TREASURY Privacy Act of 1974; Treasury/United States Mint .013--United States... Privacy Act of 1974, as amended, 5 U.S.C. 552a, the Department of the Treasury (``Treasury'') and the...

39 CFR 221.1 - The United States Postal Service.

Science.gov (United States)

2010-07-01

... 39 Postal Service 1 2010-07-01 2010-07-01 false The United States Postal Service. 221.1 Section 221.1 Postal Service UNITED STATES POSTAL SERVICE ORGANIZATION AND ADMINISTRATION GENERAL ORGANIZATION § 221.1 The United States Postal Service. The United States Postal Service was established as an...

UNITED STATES DURING THE COLD WAR 1945-1990

Directory of Open Access Journals (Sweden)

Novita Mujiyati

2016-02-01

Full Text Available United States and the Soviet Union is a country on the part of allies who emerged as the winner during World War II. However, after reaching the Allied victory in the situation soon changed, man has become an opponent. United States and the Soviet Union are competing to expand the influence and power. To compete the United States strive continuously strengthen itself both in the economic and military by establishing a defense pact and aid agencies in the field of economy. During the Cold War the two are not fighting directly in one of the countries of the former Soviet Union and the United States. However, if understood, teradinya the Korean War and the Vietnam War is a result of tensions between the two countries and is a direct warfare conducted by the United States and the Soviet Union. Cold War ended in conflict with the collapse of the Soviet Union and the United States emerged as the winner of the country.

Screening Pinus taeda (loblolly pine) families for physical and mechanical properties using vibrational spectroscopy

Science.gov (United States)

Gifty E. Acquah; Brian K. Via; Lori G. Eckhardt

2016-01-01

In a bid to control the loblolly pine decline complex, stakeholders are using the selection and deployment of genetically superior families that are disease tolerant. It is vital that we do not compromise other important properties while breeding for disease tolerance. In this preliminary study, near infrared spectroscopy was utilized in conjunction with data collected...

78 FR 27857 - United States Standards for Wheat

Science.gov (United States)

2013-05-13

... RIN 0580-AB12 United States Standards for Wheat AGENCY: Grain Inspection, Packers and Stockyards... (GIPSA) is revising the United States Standards for Wheat under the United States Grain Standards Act (USGSA) to change the definition of Contrasting classes (CCL) in the class Hard White wheat. This change...

Tuberculosis along the United States-Mexico border, 1993-2001.

Science.gov (United States)

Schneider, Eileen; Laserson, Kayla F; Wells, Charles D; Moore, Marisa

2004-07-01

Tuberculosis (TB) is a leading public health problem and a recognized priority for the federal Governments of both Mexico and the United States of America. The objectives of this research, primarily for the four states in the United States that are along the border with Mexico, were to: (1) describe the epidemiological situation of TB, (2) identify TB risk factors, and (3) discuss tuberculosis program strategies. We analyzed tuberculosis case reports collected from 1993 through 2001 by the tuberculosis surveillance system of the United States. We used those data to compare TB cases mainly among three groups: (1) Mexican-born persons in the four United States border states (Arizona, California, New Mexico, and Texas), (2) persons in those four border states who had been born in the United States, and (3) Mexican-born persons in the 46 other states of the United States, which do not border Mexico. For the period from 1993 through 2001, of the 16 223 TB cases reported for Mexican-born persons in the United States, 12 450 of them (76.7%) were reported by Arizona, California, New Mexico, and Texas. In those four border states overall in 2001, tuberculosis case rates for Mexican-born persons were 5.0 times as high as the rates for persons born in the United States; those four states have 23 counties that directly border on Mexico, and the ratio in those counties was 5.8. HIV seropositivity, drug and alcohol use, unemployment, and incarceration were significantly less likely to be reported in Mexican-born TB patients from the four border states and the nonborder states than in patients born in the United States from the four border states (P pulmonary tuberculosis patients who were 18-64 years of age and residing in the four border states, the Mexican-born patients were 3.6 times as likely as the United States-born patients were to have resistance to at least isoniazid and rifampin (i. e., to have multidrug-resistant TB) and twice as likely to have isoniazid resistance

Global Entrepreneurship and the United States

Science.gov (United States)

2010-09-01

Global Entrepreneurship and the United States by Zoltan J. Acs Laszlo Szerb Ruxton, MD 21204 for under contract number SBAHQ-09...SUBTITLE Global Entrepreneurship and the United States 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT...3 2.1. Assessing Entrepreneurship ..................................................................................4 2.2. Stages of Development

75 FR 25925 - United States Mint

Science.gov (United States)

2010-05-10

... Committee May 25, 2010 Public Meeting. SUMMARY: Pursuant to United States Code, Title 31, section 5135(b)(8... scheduled for May 25, 2010. Date: May 25, 2010. Time: 9 a.m. to 12 p.m. Location: 8th Floor Board Room, United States Mint, 801 9th Street, NW., Washington, DC 20220. Subject: Review and discuss obverse and...

Development and Validation of Marker-Aided Selection Methods for Wood Property Traits in Loblolly Pine and Hybrid Poplar

Energy Technology Data Exchange (ETDEWEB)

Tuskan, G.A.

2001-06-20

Wood properties influence pulp and paper quality. Certainly, overall pulp yields are directly related to the cellulose content, changes in hemicellulose content are associated with changes in pulp cohesiveness, and pulping efficiency is related to lignin content. Despite the importance of wood properties on product quality, little progress has been made in improving such traits because current methods of assessing wood and fiber characteristics are time-consuming, expensive, and often imprecise. Genetic improvement of wood and fiber properties has been further hampered by the large size of trees, delayed reproductive maturity and long harvest cycles. Recent developments in molecular genetics will help overcome the physical, economic and biological constraints in assessing and improving wood properties. Genetic maps consisting of numerous molecular markers are now available for loblolly pine and hybrid poplar. Such markers/maps may be used as part of a marker-aided selection and breeding effort or to expedite the isolation and characterization of genes and/or promoters that directly control wood properties. The objectives of this project are: (1) to apply new and rapid analytical techniques for assessing component wood properties to segregating F2 progeny populations of loblolly pine and hybrid poplar, (2) to map quantitative trait loci and identify molecular markers associated with wood properties in each of the above species and (3) to validate marker-aided selection methods for wood properties in loblolly pine and hybrid poplar.

31 CFR 515.330 - Person within the United States.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Person within the United States. 515... Definitions § 515.330 Person within the United States. (a) The term person within the United States, includes: (1) Any person, wheresoever located, who is a resident of the United States; (2) Any person actually...

45 CFR 212.7 - Repayment to the United States.

Science.gov (United States)

2010-10-01

... 45 Public Welfare 2 2010-10-01 2010-10-01 false Repayment to the United States. 212.7 Section 212... UNITED STATES CITIZENS RETURNED FROM FOREIGN COUNTRIES § 212.7 Repayment to the United States. (a) An..., any or all of the cost of such assistance to the United States, except insofar as it is determined...

20 CFR 416.215 - You leave the United States.

Science.gov (United States)

2010-04-01

... 20 Employees' Benefits 2 2010-04-01 2010-04-01 false You leave the United States. 416.215 Section... Eligible § 416.215 You leave the United States. You lose your eligibility for SSI benefits for any month during all of which you are outside of the United States. If you are outside of the United States for 30...

37 CFR 1.412 - The United States Receiving Office.

Science.gov (United States)

2010-07-01

... Information § 1.412 The United States Receiving Office. (a) The United States Patent and Trademark Office is a Receiving Office only for applicants who are residents or nationals of the United States of America. (b) The... “United States Receiving Office” or by the abbreviation “RO/US.” (c) The major functions of the Receiving...

Relationship of Aboveground Biomass Production Site Index and Soil Characteristics in a Loblolly Pine Stand

Science.gov (United States)

Minyi Zhou; Thomas J. Dean

2004-01-01

As a part of the continuing studies of the Cooperative Research in Sustainable Silviculture and Soil Productivity (CRiSSSP), 24 experimental plots in a loblolly pine (Pinus taeda L.) stand have recently been installed near Natchitoches, LA. The plots were uniformly assigned to 3 blocks based on topography (i.e., up slope, midslope, and down slope)....

Loblolly pine needle decomposition and nutrient dynamics as affected by irrigation, fertilization, and substrate quality

Science.gov (United States)

Felipe G. Sanchez

2001-01-01

This study examined the effects of initial litter quality and irrigation and fertilization treatments on litter decomposition rates and nutrient dynamics (N, Ca, K, Mg, and P) of loblolly (Pinus taeda L.) pine needles in the North Carolina Sand Hills over 3 years. Litter quality was based on the initial C/N ratios, with the high-quality litter having...

Litter Decomposition and Soil Respiration Responses to Fuel-Reduction Treatments in Piedmond Loblolly Pine Forests

Science.gov (United States)

Mac A. Callaham; Peter H. Anderson; Thomas A. Waldrop; Darren J. Lione; Victor B. Shelburne

2004-01-01

As part of the National Fire and Fire Surrogate Study, we measured the short-term effects of different fuel-management practices on leaf litter decomposition and soil respiration in loblolly pine stands on the upper Piedmont of South Carolina. These stands had been subjected to a factorial arrangement of experimental fuel-management treatments that included prescribed...

Economic Impact of Net Carbon Payments and Bioenergy Production in Fertilized and Non-Fertilized Loblolly Pine Plantations

Directory of Open Access Journals (Sweden)

Prativa Shrestha

2015-08-01

Full Text Available Sequestering carbon in forest stands and using woody bioenergy are two potential ways to utilize forests in mitigating emissions of greenhouse gases (GHGs. Such forestry related strategies are, however, greatly influenced by carbon and bioenergy markets. This study investigates the impact of both carbon and woody bioenergy markets on land expectation value (LEV and rotation age of loblolly pine (Pinus taeda L. forests in the southeastern United States for two scenarios—one with thinning and no fertilization and the other with thinning and fertilization. Economic analysis was conducted using a modified Hartman model. The amount of carbon dioxide (CO2 emitted during various activities such as management of stands, harvesting, and product decay was included in the model. Sensitivity analysis was conducted with a range of carbon offset, wood for bioenergy, and forest product prices. The results showed that LEV increased in both management scenarios as the price of carbon and wood for bioenergy increased. However, the results indicated that the management scenario without fertilizer was optimal at low carbon prices and the management scenario with fertilizer was optimal at higher carbon prices for medium and low forest product prices. Carbon payments had a greater impact on LEV than prices for wood utilized for bioenergy. Also, increase in the carbon price increased the optimal rotation age, whereas, wood prices for bioenergy had little impact. The management scenario without fertilizer was found to have longer optimal rotation ages.

The United States and the Kurds: Case Studies in United States Engagement

National Research Council Canada - National Science Library

Lambert, Peter

1997-01-01

..., between 1969- 1975, and 1990-1996. Both eras saw the United States able to influence events relating to the Kurds in support of a larger regional policy, only to find no easy solution to the Kurdish quest for autonomy...

The effect of pile size on moisture content of loblolly pine while field drying

Science.gov (United States)

John Klepac; Dana Mitchell; Jason. and Thompson

2014-01-01

A 14-year old loblolly pine (Pinus taeda) plantation approximately 5 acres in size was cut during August 2013 with a tracked feller-buncher. A grapple skidder transported trees from one-half of the tract to a landing where they were piled whole-tree. Remaining trees were left whole-tree in skidder bundles (small piles) in the stand. All trees were left on-site and...

An annotated genetic map of loblolly pine based on microsatellite and cDNA markers

Science.gov (United States)

Craig S. Echt; Surya Saha; Konstantin V. Krutovsky; Kokulapalan Wimalanathan; John E. Erpelding; Chun Liang; C Dana Nelson

2011-01-01

Previous loblolly pine (Pinus taeda L.) genetic linkage maps have been based on a variety of DNA polymorphisms, such as AFLPs, RAPDs, RFLPs, and ESTPs, but only a few SSRs (simple sequence repeats), also known as simple tandem repeats or microsatellites, have been mapped in P. taeda. The objective of this study was to integrate a large set of SSR markers from a variety...

United States rejoin ITER

International Nuclear Information System (INIS)

Roberts, M.

2003-01-01

Upon pressure from the United States Congress, the US Department of Energy had to withdraw from further American participation in the ITER Engineering Design Activities after the end of its commitment to the EDA in July 1998. In the years since that time, changes have taken place in both the ITER activity and the US fusion community's position on burning plasma physics. Reflecting the interest in the United States in pursuing burning plasma physics, the DOE's Office of Science commissioned three studies as part of its examination of the option of entering the Negotiations on the Agreement on the Establishment of the International Fusion Energy Organization for the Joint Implementation of the ITER Project. These were a National Academy Review Panel Report supporting the burning plasma mission; a Fusion Energy Sciences Advisory Committee (FESAC) report confirming the role of ITER in achieving fusion power production, and The Lehman Review of the ITER project costing and project management processes (for the latter one, see ITER CTA Newsletter, no. 15, December 2002). All three studies have endorsed the US return to the ITER activities. This historical decision was announced by DOE Secretary Abraham during his remarks to employees of the Department's Princeton Plasma Physics Laboratory. The United States will be working with the other Participants in the ITER Negotiations on the Agreement and is preparing to participate in the ITA

United States Stateplane Zones - NAD83

Data.gov (United States)

Earth Data Analysis Center, University of New Mexico — U.S. State Plane Zones (NAD 1983) represents the State Plane Coordinate System (SPCS) Zones for the 1983 North American Datum within United States.

United States Stateplane Zones - NAD27

Data.gov (United States)

Earth Data Analysis Center, University of New Mexico — U.S. State Plane Zones (NAD 1927) represents the State Plane Coordinate System (SPCS) Zones for the 1927 North American Datum within United States.

Effects of a Commercial Chitosan Formulation on Bark Beetle (Coleoptera: Curculionidae) Resistance Parameters in Loblolly Pine

Science.gov (United States)

K. D. Klepzig; B. L. Strom

2011-01-01

A commercially available chitosan product, Beyond™, was evaluated for its effects on loblolly pine, Pinus taeda L., responses believed related to bark beetle resistance. Treatments were applied 4 times at approx. 6-wk intervals between May and November 2008. Five treatments were evaluated: ground application (soil drench), foliar application, ground...

Nantucket Pine Tip Moth Control and Loblolly Pine Growth in Intensive Pine Culture: Two-Year Results

Science.gov (United States)

David L. Kulhavy; Jimmie L. Yeiser; L. Allen Smith

2004-01-01

Twenty-two treatments replicated four times were applied to planted loblolly pine, Pinus taeda L. on bedded industrial forest land in east Texas for measurement of growth impact of Nantucket pine tip moth (NPTM), Rhyacionia frustrana (Comstock), and effects on pine growth over 2 years. Treatments were combinations of Velpar, Oust, and Arsenal...

Seasonal photosynthesis and water relations of juvenile loblolly pine relative to stand density and canopy position

Science.gov (United States)

Zhenmin Tang; Jim L. Chambers; Mary A. Sword Sayer; James P. Barnett

2003-01-01

To assess the effects of stand density and canopy environment on tree physiology, we measured gas exchange responses of the same needle age class of 16-year-old loblolly pines (Pinus taeda L.) in thinned (512 trees ha-1) and non-thinned treatment plots (2,863 trees ha-1) in central Louisiana....

Soil organic matter fractions in loblolly pine forests of Coastal North Carolina managed for bioenergy production

Science.gov (United States)

Kevan J. Minick; Brian D. Strahm; Thomas R. Fox; Eric B. Surce; Zakiya H. Leggett

2015-01-01

Dependence on foreign oil continues to increase, and concern over rising atmospheric CO2 and other greenhouse gases has intensified research into sustainable biofuel production. Intercropping switchgrass (Panicum virgatum L.) between planted rows of loblolly pine (Pinus taeda L.) offers an opportunity to utilize inter-row space that typically contains herbaceous and...

Present state of electric power business in United States and Europe

International Nuclear Information System (INIS)

Onishi, Kenichi

2011-01-01

This article reported present state of nuclear power and electric power business in United States and Europe after Fukushima Daiichi Accident. As for the trend of demand and supply of electric power and policy, the accident forced Germany possibly to proceed with phase-out of nuclear power, but France and United States to sustain nuclear power with no great change of energy policy at this moment. As for the trend of electric power market, there was not state in United States with liberalized retail market of electric power after rolling blackouts occurred in California State in the early 2000s. In Germany proceeding with renewable energy introduction, renewable electricity fed into the grid was paid for by the network operators at fixed tariffs and the costs passed on to electricity consumers were increasing. Renewable Portfolio Standards (RPS) in United States forced the state to introduction of renewable energy to some ratio, and Feed-in Tariff (FIT) introduced in EU in 1990s lead to introduction of a large amount of renewable electricity targeted in 2020. Huge amount of wind power introduction brought about several problems to solve such that excess electric power above domestic demand had bad effects on grids in neighboring region. Enforcement of power transmission lines was also needed with increase of maximum electric power as well as introduction of a large amount of renewable electricity. (T. Tanaka)

Death in the United States, 2011

Science.gov (United States)

... Order from the National Technical Information Service NCHS Death in the United States, 2011 Recommend on Facebook ... 2011 SOURCE: National Vital Statistics System, Mortality. Do death rates vary by state? States experience different mortality ...

Pine growth and plant community response to chemical vs. mechanical site preparation for establishing loblolly and slash pine

Science.gov (United States)

James H. Miller; Zhijuan Qiu

1995-01-01

Chemical and mechanical site preparation methods were studied for establishing loblolly (Pinus taeda L) and slash (P. elliottii var. elliottii Engelm.) pine following both integrated fuelwood-pulpwood harvesting and conventional whole-tree harvesting of pines and hardwoods in southem Alabama's Middle Coastal...

31 CFR 103.39 - Person outside the United States.

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false Person outside the United States. 103... Person outside the United States. For the purposes of this subpart, a remittance or transfer of funds, or... the United States, shall be deemed to be a remittance or transfer to a person outside the United...

Development and Validation of Marker-Aided Selection Methods for Wood Property Traits in Loblolly Pine and Hybrid Poplar; FINAL

International Nuclear Information System (INIS)

Tuskan, G.A.

2001-01-01

Wood properties influence pulp and paper quality. Certainly, overall pulp yields are directly related to the cellulose content, changes in hemicellulose content are associated with changes in pulp cohesiveness, and pulping efficiency is related to lignin content. Despite the importance of wood properties on product quality, little progress has been made in improving such traits because current methods of assessing wood and fiber characteristics are time-consuming, expensive, and often imprecise. Genetic improvement of wood and fiber properties has been further hampered by the large size of trees, delayed reproductive maturity and long harvest cycles. Recent developments in molecular genetics will help overcome the physical, economic and biological constraints in assessing and improving wood properties. Genetic maps consisting of numerous molecular markers are now available for loblolly pine and hybrid poplar. Such markers/maps may be used as part of a marker-aided selection and breeding effort or to expedite the isolation and characterization of genes and/or promoters that directly control wood properties. The objectives of this project are: (1) to apply new and rapid analytical techniques for assessing component wood properties to segregating F(sub 2) progeny populations of loblolly pine and hybrid poplar, (2) to map quantitative trait loci and identify molecular markers associated with wood properties in each of the above species and (3) to validate marker-aided selection methods for wood properties in loblolly pine and hybrid poplar

Energy problems of the United States

International Nuclear Information System (INIS)

Pertuzio, A.

2006-01-01

The united states are the third world producer of oil which accounts for 440% of world production and 20 million barrels/day of which 60% are imported. That dependence on imports is likely to increase in the next decades. Such supplies and their security are therefore a fundamental factor of the United States foreign policy in combination with their political, economic and strategic objectives in a world both unsure and dangerous

Household pesticide usage in the United States.

Science.gov (United States)

Savage, E P; Keefe, T J; Wheeler, H W; Mounce, L; Helwic, L; Applehans, F; Goes, E; Goes, T; Mihlan, G; Rench, J; Taylor, D K

1981-01-01

A total of 10,000 U.S. households in 25 standard metropolitan statistical areas and 25 counties were included in the United States. More than 8,200 households granted an interview. Nine of every ten households in the United States used some types of pesticide in their house, garden, or yard. Households in the southeastern United States used the most pesticides. Although more than 500 different pesticide formulations were used by the sampled households, 15 pesticides accounted for 65.5% of all pesticides reported in this study. Thirteen of these 15 pesticides were insecticides, one was a herbicide, and one was a rodenticide.

Modeling loblolly pine aboveground live biomass in a mature pine-hardwood stand: a cautionary tale

Science.gov (United States)

D. C. Bragg

2011-01-01

Carbon sequestration in forests is a growing area of interest for researchers and land managers. Calculating the quantity of carbon stored in forest biomass seems to be a straightforward task, but it is highly dependent on the function(s) used to construct the stand. For instance, there are a number of possible equations to predict aboveground live biomass for loblolly...

Effects of first thinning on growth of loblolly pine plantations in the West Coastal Plain

Science.gov (United States)

Dean W. Coble; Jason B. Grogan

2016-01-01

The purpose of this research is to analyze thinning response in basal area and height growth of residual loblolly pine trees growing in plantations located in the West Gulf Coastal Plain. Thinning is a well-known silvicultural practice that increases the growing space available to desirable trees by removing competing trees.

Morphological characteristics of loblolly pine wood as related to specific gravity, growth rate and distance from pith

Science.gov (United States)

Charles W. McMillin

1968-01-01

Earlywood and latewood tracheid length and transverse cellular dimensions of wood removed from stems of loblolly pine (Pinus taeda L.) and factorially aegregated by specific gravity, rings from the pith, and growth rate were determined from sample chips. The independent relationships of each factor with fiber morphology are described.

Identification of quantitative trait loci influencing wood specific gravity in an outbred pedigree of loblolly pine

Science.gov (United States)

A. Groover; M. Devey; T. Fiddler; J. Lee; R. Megraw; T. Mitchel-Olds; B. Sherman; S. Vujcic; C. Williams; D. Neale

1994-01-01

We report the identification of quantitative trait loci (QTL) influencing wood specific gravity (WSG) in an outbred pedigree of loblolly pine (Pinus taeda L.) . QTL mapping in an outcrossing species is complicated by the presence of multiple alleles (>2) at QTL and marker loci. Multiple alleles at QTL allow the examination of interaction among...

Maximum growth potential in loblolly pine: results from a 47-year-old spacing study in Hawaii

Science.gov (United States)

Lisa J. Samuelson; Thomas L. Eberhardt; John R. Butnor; Tom A. Stokes; Kurt H. Johnsen

2010-01-01

Growth, allocation to woody root biomass, wood properties, leaf physiology, and shoot morphology were examined in a 47-year-old loblolly pine (Pinus taeda L.) density trial located in Maui, Hawaii, to determine if stands continued to carry the high density, basal area, and volume reported at younger ages and to identify potential factors controlling...

Responses of two genetically superior loblolly pine clonal ideotypes to a severe ice storm

Science.gov (United States)

Lauren S. Pile; Christopher A. Maier; G. Geoff Wang; Dapao Yu; Tim M. Shearman

2016-01-01

An increase in the frequency and magnitude of extreme weather events, such as major ice storms, can have severe impacts on southern forests. We investigated the damage inflicted by a severe ice storm that occurred in February 2014 on two loblolly pine (Pinus taeda L.) ideotypes in Cross, South Carolina located in the southeastern coastal plain. The ‘‘narrow crown”...

75 FR 13345 - Pricing for Certain United States Mint Products

Science.gov (United States)

2010-03-19

... DEPARTMENT OF THE TREASURY United States Mint Pricing for Certain United States Mint Products AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of First Spouse Bronze Medals and 2010 First Spouse Bronze Medal Series: Four...

22 CFR 22.3 - Remittances in the United States.

Science.gov (United States)

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Remittances in the United States. 22.3 Section...-DEPARTMENT OF STATE AND FOREIGN SERVICE § 22.3 Remittances in the United States. (a) Type of remittance. Remittances shall be in the form of: (1) Check or bank draft drawn on a bank in the United States; (2) money...

Are biogenic emissions a significant source of summertime atmospheric toluene in the rural Northeastern United States?

Directory of Open Access Journals (Sweden)

M. L. White

2009-01-01

Full Text Available Summertime atmospheric toluene enhancements at Thompson Farm in the rural northeastern United States were unexpected and resulted in a toluene/benzene seasonal pattern that was distinctly different from that of other anthropogenic volatile organic compounds. Consequently, three hydrocarbon sources were investigated for potential contributions to the enhancements during 2004–2006. These included: (1 increased warm season fuel evaporation coupled with changes in reformulated gasoline (RFG content to meet US EPA summertime volatility standards, (2 local industrial emissions and (3 local vegetative emissions. The contribution of fuel evaporation emission to summer toluene mixing ratios was estimated to range from 16 to 30 pptv d⁻¹, and did not fully account for the observed enhancements (20–50 pptv in 2004–2006. Static chamber measurements of alfalfa, a crop at Thompson Farm, and dynamic branch enclosure measurements of loblolly pine trees in North Carolina suggested vegetative emissions of 5 and 12 pptv d⁻¹ for crops and coniferous trees, respectively. Toluene emission rates from alfalfa are potentially much larger as these plants were only sampled at the end of the growing season. Measured biogenic fluxes were on the same order of magnitude as the influence from gasoline evaporation and industrial sources (regional industrial emissions estimated at 7 pptv d⁻¹ and indicated that local vegetative emissions make a significant contribution to summertime toluene enhancements. Additional studies are needed to characterize the variability and factors controlling toluene emissions from alfalfa and other vegetation types throughout the growing season.

The effects of planting density and cultural intensity on loblolly pine crown characteristics at age twelve

Science.gov (United States)

Madison Akers; Michael Kane; Robert Teskey; Richard Daniels; Dehai Zhao; Santosh Subedi

2012-01-01

Twelve-year old loblolly pine (Pinus taeda L.) stands were analyzed for the effects of planting density and cultural intensity on tree and crown attributes. Four study installations were located in the Piedmont and Upper Coastal Plain regions of the U.S. South. The treatments included six planting densities (740, 1480, 2220, 2960, 3700, 4440 trees...

The United Kingdom: Issues for the United States

National Research Council Canada - National Science Library

Archick, Kristin

2007-01-01

...; and more recently, from the UK's strong support in countering terrorism and confronting Iraq. The United States and Britain also share a mutually beneficial trade and economic relationship, and are each other's biggest foreign direct investors...

Radiation therapy facilities in the United States

International Nuclear Information System (INIS)

Ballas, Leslie K.; Elkin, Elena B.; Schrag, Deborah; Minsky, Bruce D.; Bach, Peter B.

2006-01-01

Purpose: About half of all cancer patients in the United States receive radiation therapy as a part of their cancer treatment. Little is known, however, about the facilities that currently deliver external beam radiation. Our goal was to construct a comprehensive database of all radiation therapy facilities in the United States that can be used for future health services research in radiation oncology. Methods and Materials: From each state's health department we obtained a list of all facilities that have a linear accelerator or provide radiation therapy. We merged these state lists with information from the American Hospital Association (AHA), as well as 2 organizations that audit the accuracy of radiation machines: the Radiologic Physics Center (RPC) and Radiation Dosimetry Services (RDS). The comprehensive database included all unique facilities listed in 1 or more of the 4 sources. Results: We identified 2,246 radiation therapy facilities operating in the United States as of 2004-2005. Of these, 448 (20%) facilities were identified through state health department records alone and were not listed in any other data source. Conclusions: Determining the location of the 2,246 radiation facilities in the United States is a first step in providing important information to radiation oncologists and policymakers concerned with access to radiation therapy services, the distribution of health care resources, and the quality of cancer care

75 FR 13345 - Pricing for Certain 2010 United States Mint Products

Science.gov (United States)

2010-03-19

... DEPARTMENT OF THE TREASURY United States Mint Pricing for Certain 2010 United States Mint Products AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2010 United States Mint Presidential $1 Coin and First Spouse Medal...

Intergenerational educational mobility in Denmark and the United States

DEFF Research Database (Denmark)

Andrade, Stefan Bastholm; Thomsen, Jens-Peter

2018-01-01

An overall finding in comparative mobility studies is that intergenerational mobility is greater in Scandinavia than in liberal welfare-state countries like the United States and United Kingdom. However, in a recent study, Landersø and Heckman (L & H) (2017) argue that intergenerational educational...... mobility in Denmark and the United States is remarkably similar. L & H’s findings run contrary to widespread beliefs and have been echoed in academia and mass media on both sides of the Atlantic Ocean. In this article, we reanalyze educational mobility in Denmark and the United States using the same data...... sources as L & H. We apply several different methodological approaches from economics and sociology, and we consistently find that educational mobility is higher in Denmark than in the United States....

Foliar leaching, translocation, and biogenic emission of 35S in radiolabeled loblolly pines

International Nuclear Information System (INIS)

Garten, C.T. Jr.

1990-01-01

Foliar leaching, basipetal (downward) translocation, and biogenic emission of sulfur (S), as traced by 35 S, were examined in a field study of loblolly pines. Four trees were radiolabeled by injection with amounts of 35 S in the 6-8 MBq range, and concentrations in needle fall, stemflow, throughfall, and aboveground biomass were measured over a period of 15-20 wk after injection. The contribution of dry deposition to sulfate-sulfur (SO 4 2- -S) concentrations in net throughfall (throughfall SO 4 2- -S concentration minus that in incident precipitation) beneath all four trees was > 90%. Calculations indicated that about half of the summertime SO 2 dry deposition flux to the loblolly pines was fixed in the canopy and not subsequently leached by rainfall. Based on mass balance calculations, 35 S losses through biogenic emissions from girdled trees were inferred to be 25-28% of the amount injected. Estimates based on chamber methods and mass balance calculations indicated a range in daily biogenic S emission of 0.1-10 μg/g dry needles. Translocation of 35 S to roots in nongirdled trees was estimated to be between 14 and 25% of the injection. It is hypothesized that biogenic emission and basipetal translocation of S (and not foliar leaching) are important mechanisms by which forest trees physiologically adapt to excess S in the environment

Toll Facilities in the United States

Data.gov (United States)

Department of Transportation — Biennial report containing selected information on toll facilities in the United States that has been provided to FHWA by the States and/or various toll authorities...

State nuclear initiatives in the United States

International Nuclear Information System (INIS)

Strauss, P.L.; Stoiber, C.R.

1977-01-01

The paper deals with State nuclear initiatives regarding the role of nuclear power in the energy future of the United States. The question of whether and under what circumstances nuclear facilities should be used to generate electricity was put to the popular vote in several States in 1976. Some general principles of Federal-State relations are discussed with specific reference to nuclear regulations. The initiative mechanism itself is described as well as its legal form and background. The parallel developments in the State and Federal legislative consideration of nuclear issues is reviewed and the suggested reasons for the defeat of the proposals in the seven States concerned are discussed. Finally, the author draws some conclusions on the effects of the 1976 initiatives on future decision-making in the US on energy policy in general and nuclear power in particular. (NEA) [fr

Southern pine beetle in loblolly pine: simulating within stand interactions using the process model SPBLOBTHIN

Science.gov (United States)

Brian Strom; J. R. Meeker; J. Bishir; James Roberds; X. Wan

2016-01-01

Pine stand density is a key determinant of damage resulting from attacks by the southern pine beetle (SPB, Dendroctonus frontalis Zimm.). High-density stands of maturing loblolly pine (Pinus taeda L.) are at high risk for losses to SPB, and reducing stand density is the primary tool available to forest managers for preventing and mitigating damage. Field studies are...

27 CFR 479.89 - Transfers to the United States.

Science.gov (United States)

2010-04-01

... Transfers to the United States. A firearm may be transferred to the United States or any department... 27 Alcohol, Tobacco Products and Firearms 3 2010-04-01 2010-04-01 false Transfers to the United States. 479.89 Section 479.89 Alcohol, Tobacco Products, and Firearms BUREAU OF ALCOHOL, TOBACCO...

Identification of nine pathotype-specific genes conferring resistance to fusiform rust in loblolly pine (Pinus taeda L.)

Science.gov (United States)

Henry Amerson; C. Dana Nelson; Thomas L. Kubisiak; E.George Kuhlman; Saul Garcia

2015-01-01

Nearly two decades of research on the host-pathogen interaction in fusiform rust of loblolly pine is detailed. Results clearly indicate that pathotype-specific genes in the host interacting with pathogen avirulence cause resistance as defined by the non-gall phenotype under favorable environmental conditions for disease development. In particular, nine fusiform rust...

Response of loblolly pine to complete woody and herbaceous control: projected yields and economic outcomes - the COMProject

Science.gov (United States)

James H. Miller; R.L. Busby; B.R. Zutter; S.M. Zedaker; M.B. Edwards; R.A. Newbold

1995-01-01

Abstract.Age-8 and -9 data from the 13 study plantations of the Competition Omission Monitoring Project (COMP) were used to project yields and derive economic outcomes for loblolly pine (Pinus taeda L.). COMP treatments were chop-burn, complete woody plant control, complete herbaceous plant control for 4 years, and complete woody...

Fertilizer responses of longleaf pine trees within a loblolly pine plantation: separating direct effects from competition effects

Science.gov (United States)

Peter H Anderson; Kurt H. Johnsen

2009-01-01

Evidence is mixed on how well longleaf pine (Pinus palustris Mill.) responds to increased soil nitrogen via fertilization. We examined growth and physiological responses of volunteer longleaf pine trees within an intensive loblolly pine (Pinus taeda L.) fertilization experiment. Fertilizer was applied annually following thinning at age 8 years (late 1992) at rates...

32 CFR 516.54 - Witnesses for the United States.

Science.gov (United States)

2010-07-01

... 32 National Defense 3 2010-07-01 2010-07-01 true Witnesses for the United States. 516.54 Section..., Travel, and Expenses of Witnesses § 516.54 Witnesses for the United States. (a) Status of witness. A military member authorized to appear as a witness for the United States, including those authorized to...

32 CFR 150.21 - Appeals by the United States.

Science.gov (United States)

2010-07-01

... 32 National Defense 1 2010-07-01 2010-07-01 false Appeals by the United States. 150.21 Section 150... the United States. (a) Restricted filing. Only a representative of the government designated by the Judge Advocate General of the respective service may file an appeal by the United States under Article...

United States housing, first quarter 2013

Science.gov (United States)

Delton Alderman

2014-01-01

Provides current and historical information on housing market in the United States. Information includes trends for housing permits and starts, housing under construction, and housing completions for single and multifamily units, and sales and construction. This report will be updated regularly.

Exploiting Genetic Variation of Fiber Components and Morphology in Juvenile Loblolly Pine

Energy Technology Data Exchange (ETDEWEB)

Chang, Hou-Min; Kadia, John F.; Li, Bailian; Sederoff, Ron

2005-06-30

In order to ensure the global competitiveness of the Pulp and Paper Industry in the Southeastern U.S., more wood with targeted characteristics have to be produced more efficiently on less land. The objective of the research project is to provide a molecular genetic basis for tree breeding of desirable traits in juvenile loblolly pine, using a multidisciplinary research approach. We developed micro analytical methods for determine the cellulose and lignin content, average fiber length, and coarseness of a single ring in a 12 mm increment core. These methods allow rapid determination of these traits in micro scale. Genetic variation and genotype by environment interaction (GxE) were studied in several juvenile wood traits of loblolly pine (Pinus taeda L.). Over 1000 wood samples of 12 mm increment cores were collected from 14 full-sib families generated by a 6-parent half-diallel mating design (11-year-old) in four progeny tests. Juvenile (ring 3) and transition (ring 8) for each increment core were analyzed for cellulose and lignin content, average fiber length, and coarseness. Transition wood had higher cellulose content, longer fiber and higher coarseness, but lower lignin than juvenile wood. General combining ability variance for the traits in juvenile wood explained 3 to 10% of the total variance, whereas the specific combining ability variance was negligible or zero. There were noticeable full-sib family rank changes between sites for all the traits. This was reflected in very high specific combining ability by site interaction variances, which explained from 5% (fiber length) to 37% (lignin) of the total variance. Weak individual-tree heritabilities were found for cellulose, lignin content and fiber length at the juvenile and transition wood, except for lignin at the transition wood (0.23). Coarseness had moderately high individual-tree heritabilities at both the juvenile (0.39) and transition wood (0.30). Favorable genetic correlations of volume and stem

Yield and financial performance estimates of four elite loblolly pine seed sources planted in the Western Gulf Region

Science.gov (United States)

Michael A. Blazier; A. Gordon Holley

2015-01-01

Eastern seed sources of loblolly pine (Pinus taeda L.) have been planted in the Western Gulf region for nearly three decades because they often have higher growth rates than local seed sources. However, productivity gains for eastern families are sometimes offset by poorer survival rates relative to local families.

Arsenic in Ground Water of the United States

Science.gov (United States)

... Team More Information Arsenic in groundwater of the United States Arsenic in groundwater is largely the result of ... Gronberg (2011) for updated arsenic map. Featured publications United States Effects of human-induced alteration of groundwater flow ...

A novel multifunctional O-methyltransferase implicated in a dual methylation pathway associated with lignin biosynthesis in loblolly pine.

Science.gov (United States)

Li, L; Popko, J L; Zhang, X H; Osakabe, K; Tsai, C J; Joshi, C P; Chiang, V L

1997-05-13

S-adenosyl-L-methionine (SAM)-dependent O-methyltransferases (OMTs) catalyze the methylation of hydroxycinnamic acid derivatives for the synthesis of methylated plant polyphenolics, including lignin. The distinction in the extent of methylation of lignins in angiosperms and gymnosperms, mediated by substrate-specific OMTs, represents one of the fundamental differences in lignin biosynthesis between these two classes of plants. In angiosperms, two types of structurally and functionally distinct lignin pathway OMTs, caffeic acid 3-O-methyltransferases (CAOMTs) and caffeoyl CoA 3-O-methyltransferases (CCoAOMTs), have been reported and extensively studied. However, little is known about lignin pathway OMTs in gymnosperms. We report here the first cloning of a loblolly pine (Pinus taeda) xylem cDNA encoding a multifunctional enzyme, SAM:hydroxycinnamic Acids/hydroxycinnamoyl CoA Esters OMT (AEOMT). The deduced protein sequence of AEOMT is partially similar to, but clearly distinguishable from, that of CAOMTs and does not exhibit any significant similarity with CCoAOMT protein sequences. However, functionally, yeast-expressed AEOMT enzyme catalyzed the methylation of CAOMT substrates, caffeic and 5-hydroxyferulic acids, as well as CCoAOMT substrates, caffeoyl CoA and 5-hydroxyferuloyl CoA esters, with similar specific activities and was completely inactive with substrates associated with flavonoid synthesis. The lignin-related substrates were also efficiently methylated in crude extracts of loblolly pine secondary xylem. Our results support the notion that, in the context of amino acid sequence and biochemical function, AEOMT represents a novel SAM-dependent OMT, with both CAOMT and CCoAOMT activities and thus the potential to mediate a dual methylation pathway in lignin biosynthesis in loblolly pine xylem.

Enrichment situation outside the United States

International Nuclear Information System (INIS)

Anon.

1979-01-01

Different enrichment technologies are briefly characterized which include gaseous diffusion, which is presently the production mainstay of the United States and France; the gaseous centrifuge which is the production plant for Urenco and the technology for future United States enrichment expansion; the aero-dynamic processes which include the jet nozzle (also known as the Becker process) and the fixed-wall centrifuge (also known as the Helikon process); chemical processes; laser isotope separation processes (also referred to in the literature as LIS); and plasma technology

Responses of arthropods to large-scale manipulations of dead wood in loblolly pine stands of the southeastern United States.

Science.gov (United States)

Ulyshen, Michael D; Hanula, James L

2009-08-01

Large-scale experimental manipulations of dead wood are needed to better understand its importance to animal communities in managed forests. In this experiment, we compared the abundance, species richness, diversity, and composition of arthropods in 9.3-ha plots in which either (1) all coarse woody debris was removed, (2) a large number of logs were added, (3) a large number of snags were added, or (4) no coarse woody debris was added or removed. The target taxa were ground-dwelling arthropods, sampled by pitfall traps, and saproxylic beetles (i.e., dependent on dead wood), sampled by flight intercept traps and emergence traps. There were no differences in total ground-dwelling arthropod abundance, richness, diversity, or composition among treatments. Only the results for ground beetles (Carabidae), which were more species rich and diverse in log input plots, supported our prediction that ground-dwelling arthropods would benefit from additions of dead wood. There were also no differences in saproxylic beetle abundance, richness, diversity, or composition among treatments. The findings from this study are encouraging in that arthropods seem less sensitive than expected to manipulations of dead wood in managed pine forests of the southeastern United States. Based on our results, we cannot recommend inputting large amounts of dead wood for conservation purposes, given the expense of such measures. However, the persistence of saproxylic beetles requires that an adequate amount of dead wood is available in the landscape, and we recommend that dead wood be retained whenever possible in managed pine forests.

Leading Causes of Death in Females United States

Science.gov (United States)

... and Health Issues at Work Health Equity Leading Causes of Death in Females, United States Recommend on Facebook Tweet ... to current and previous listings for the leading causes of death in females in the United States. Please note ...

33 CFR 2.38 - Waters subject to the jurisdiction of the United States; waters over which the United States has...

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Waters subject to the jurisdiction of the United States; waters over which the United States has jurisdiction. 2.38 Section 2.38 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY GENERAL JURISDICTION...

Unites States and the oil of the Middle-East

International Nuclear Information System (INIS)

Noel, P.

2005-08-01

The author discusses different aspects of the United States intervention and behavior in the Middle-East petroleum management. The Iraq and Iran potentials are largely under used. The Saudi Arabia defines its own oil policy, but benefits of the Unites States military help. The United States intervention is in the domain of the security of flux on the world market. (A.L.B.)

Determination of loblolly pine response to cultural treatments based on soil class, base productivity, and competition level

Science.gov (United States)

David Garrett; Michael Kane; Daniel Markewitz; Dehai Zhao

2015-01-01

The objective of this research is to better understand what factors drive loblolly pine (Pinus taeda L.) growth response to intensive culture in the University of Georgia Plantation Management Research Cooperative’s Culture x Density study in the Piedmont and Upper Coastal Plain. Twenty study sites were established ranging from southern Alabama to South Carolina in...

Food irradiation in the United States

International Nuclear Information System (INIS)

Pauli, G.H.

1991-01-01

Since 1963, some irradiated foods have been permitted for sale in the United States. Yet, at this time, commercial application has been limited to irradiation of a relatively small fraction of the spices and seasonings used as ingredients in other foods. The current situation regarding irradiated foods in the United States and how it developed is discussed. The author writes from experience gained as a Government regulator concerned primarily with ensuring safety of food and therefore this is stressed together with the crucial role played by consumers and industry. (author)

The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States

Science.gov (United States)

Horton, John D.; San Juan, Carma A.; Stoeser, Douglas B.

2017-06-30

The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States (https://doi. org/10.5066/F7WH2N65) represents a seamless, spatial database of 48 State geologic maps that range from 1:50,000 to 1:1,000,000 scale. A national digital geologic map database is essential in interpreting other datasets that support numerous types of national-scale studies and assessments, such as those that provide geochemistry, remote sensing, or geophysical data. The SGMC is a compilation of the individual U.S. Geological Survey releases of the Preliminary Integrated Geologic Map Databases for the United States. The SGMC geodatabase also contains updated data for seven States and seven entirely new State geologic maps that have been added since the preliminary databases were published. Numerous errors have been corrected and enhancements added to the preliminary datasets using thorough quality assurance/quality control procedures. The SGMC is not a truly integrated geologic map database because geologic units have not been reconciled across State boundaries. However, the geologic data contained in each State geologic map have been standardized to allow spatial analyses of lithology, age, and stratigraphy at a national scale.

Exporting Rambutan to United States: One Reality?

International Nuclear Information System (INIS)

Ahmad Zainuri Mohd Dzomir; Zainon Othman; Mohd Sidek Othman

2011-01-01

Rambutan is a one of commodity that are passed by United States of America authority to be market in that states. The main condition for the approval is the exporter must use irradiation technology as quarantine treatment to monitor the insects in there. United States of America's Agriculture Department (USDA-APHIS) has make early survey to the facilities involved in exporting process chain to overview Malaysia preparedness for this purpose. This paper work will discussed the possibility of this exporting implemented based on conditions rule by the USDA. (author)

Genetic Analysis of earl field growth of loblolly pine clones and seedlings from the same full-sib families

Science.gov (United States)

Brian Baltunis; Dudley Huber; Tim Wite

2006-01-01

The Forest Biology Research Cooperative recently established a series of loblolly pine clonal trials known as CCLONES (Comparing Clonal Lines on Experimental Sites). There are three primary levels of genetic structure in this study (parental, full-sib family, clone) that strengthen the power of CCLONES for examining genetic mechanisms and interactions with cultural...

Irrigation and fertilization effects on foliar and soil carbon and nitrogen isotope ratios in a loblolly pine stand

Science.gov (United States)

Woo-Jung Choi; Scott X. Chang; H. Lee Allen; Daniel L. Kelting; Hee-Myong Ro

2005-01-01

We examined 813C and 815N in needle (current and 1-year-old) and soil samples collected on two occasions (July and September 1999) from a 15-year-old loblolly pine (Pinus taeda L.) stand in an irrigation and fertilization experiment to investigate whether these treatments leave specific isotope signals in...

Wheat rusts in the United States in 2016

Science.gov (United States)

In 2016, wheat stripe rust caused by Puccinia striiformis f. sp. graminis was widespread throughout the United States. Cool temperatures and abundant rainfall in the southern Great Plains allowed stripe rust to become widely established and spread throughout the Great Plains and eastern United State...

United States National Seismographic Network

International Nuclear Information System (INIS)

Buland, R.

1993-09-01

The concept of a United States National Seismograph Network (USNSN) dates back nearly 30 years. The idea was revived several times over the decades. but never funded. For, example, a national network was proposed and discussed at great length in the so called Bolt Report (U. S. Earthquake Observatories: Recommendations for a New National Network, National Academy Press, Washington, D.C., 1980, 122 pp). From the beginning, a national network was viewed as augmenting and complementing the relatively dense, predominantly short-period vertical coverage of selected areas provided by the Regional Seismograph Networks (RSN's) with a sparse, well-distributed network of three-component, observatory quality, permanent stations. The opportunity finally to begin developing a national network arose in 1986 with discussions between the US Geological Survey (USGS) and the Nuclear Regulatory Commission (NRC). Under the agreement signed in 1987, the NRC has provided $5 M in new funding for capital equipment (over the period 1987-1992) and the USGS has provided personnel and facilities to develop. deploy, and operate the network. Because the NRC funding was earmarked for the eastern United States, new USNSN station deployments are mostly east of 105 degree W longitude while the network in the western United States is mostly made up of cooperating stations (stations meeting USNSN design goals, but deployed and operated by other institutions which provide a logical extension to the USNSN)

37 CFR 1.413 - The United States International Searching Authority.

Science.gov (United States)

2010-07-01

... Processing Provisions General Information § 1.413 The United States International Searching Authority. (a... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false The United States International Searching Authority. 1.413 Section 1.413 Patents, Trademarks, and Copyrights UNITED STATES PATENT...

United States Attorney Prosecutions

Science.gov (United States)

1993-10-01

property of CocaCola Bottling Company, Fayetteville, North Carolina, of a value in excess of $100.00, in violation of Title 18 United States Code, Section...another, to-wit: a Cocacola soft drink machine, the amount of damage to said personal property being more than $200.00, in violation of North Carolina

77 FR 48542 - United States

Science.gov (United States)

2012-08-14

... litigation.'' United States v. Armour and Co., 402 U.S. 673, 681 (1971). Section 5 of the Clayton Act... relief in consent judgment that contained recitals in which defendants asserted their innocence); Armour...

United States Strategy for Mexico

National Research Council Canada - National Science Library

Centner, Robert C

2005-01-01

The security and stability of Mexico is of national interest to the United States, and a strong, effective alliance between the two countries is pivotal to our national defense strategy and economic prosperity...

NCHS - Injury Mortality: United States

Data.gov (United States)

U.S. Department of Health & Human Services — This dataset describes injury mortality in the United States beginning in 1999. Two concepts are included in the circumstances of an injury death: intent of injury...

Both Europe's and the United States' electrification

International Nuclear Information System (INIS)

Matly, M.

2006-01-01

While the United States quickly had the largest electrical indus in the world, electrification in rural areas ended about thirty years after most European countries. Public intervention is a deciding factor in completing electrification, and the late involvement by the American authorities explains the gap. However it would be wrong to oppose in Europe and in the United States a motivated public sector and little involved private companies. In both continents indeed, major private and public urban distributors were almost not involved in rural electrification processes, where local players prevailed: local communities around Europe, small and medium size business in some European countries such as France, co-operative companies in the United States. Additionally, there is an essential difference between electrification in Europe and in the United States. The former does not provide much more than lighting and its success leaves few traces in popular memories; the latter includes many facilities and services, changes the lives of rural populations and is celebrated a such. Whereas the colonial venture keep European economies away from their domestic markets, while in the United States the urban market growth contents large companies, the American co-operative movement is right to believe in the existence of a large electrical equipment market among farmers then considered poor and behind. It even uses the market to complete a more profitable and less costly electrification. Electricity stories that offer food for the thoughts of Third World decision makers and power companies, when they entrust most rural electrification to their large urban companies and deny the existence of a real equipment market in their own rural world. (author)

Asian Immigration: The View from the United States.

Science.gov (United States)

Gardner, Robert W.

1992-01-01

Examines contemporary Asian immigration to the United States from a U.S. perspective. Analyzes immigration policies and data on recent immigration from Asia. Discusses impacts concerning the United States and the immigrants themselves and speculates on future immigration. The composition of Asian immigration might change, and the number might…

26 CFR 1.956-2 - Definition of United States property.

Science.gov (United States)

2010-04-01

..., which is— (i) Tangible property (real or personal) located in the United States; (ii) Stock of a... year ending June 30, 1964, R Corporation's increase in earnings invested in United States property for... United States property during its taxable year 1965, S Corporation's increase in earnings invested in...

Licensed pertussis vaccines in the United States: History and current state

OpenAIRE

Klein, Nicola P

2014-01-01

The United States switched from whole cell to acellular pertussis vaccines in the 1990s following global concerns with the safety of the whole cell vaccines. Despite high levels of acellular pertussis vaccine coverage, the United States and other countries are experiencing large pertussis outbreaks. The aim of this article is to describe the historical context which led to acellular pertussis vaccine development, focusing on vaccines currently licensed in the US, and to review evidence that w...

Nations United: The United Nations, the United States, and the Global Campaign Against Terrorism. A Curriculum Unit & Video for Secondary Schools.

Science.gov (United States)

Houlihan, Christina; McLeod, Shannon

This curriculum unit and 1-hour videotape are designed to help students understand the purpose and functions of the United Nations (UN) and explore the relationship between the United Nations and the United States. The UN's role in the global counterterrorism campaign serves as a case study for the unit. The students are asked to develop a basic…

Estimated United States Transportation Energy Use 2005

Energy Technology Data Exchange (ETDEWEB)

Smith, C A; Simon, A J; Belles, R D

2011-11-09

A flow chart depicting energy flow in the transportation sector of the United States economy in 2005 has been constructed from publicly available data and estimates of national energy use patterns. Approximately 31,000 trillion British Thermal Units (trBTUs) of energy were used throughout the United States in transportation activities. Vehicles used in these activities include automobiles, motorcycles, trucks, buses, airplanes, rail, and ships. The transportation sector is powered primarily by petroleum-derived fuels (gasoline, diesel and jet fuel). Biomass-derived fuels, electricity and natural gas-derived fuels are also used. The flow patterns represent a comprehensive systems view of energy used within the transportation sector.

United States of America National Report

International Nuclear Information System (INIS)

1992-01-01

The United States has produced this report as part of the preparations for the United Nations Conference on Environment and Development (UNCED) to be held in Brazil in June 1992. It summarizes this nation's efforts to protect and enhance the quality of the human environment in concert with its efforts to provide economic well-being during the two decades since the United Nations Conference on the Human Environment was held in Stockholm. The information presented in this report is primarily and deliberately retrospective. It is an attempt to portray the many human, economic and natural resources of the United States, to describe resource use and the principal national laws and programs established to protect these resources, and to analyze key issues on the agenda of UNCED. This analysis is presented in terms of past and present conditions and trends, measures of progress made in responding to the key issues, and a summary of government activities, underway or pending, to address ongoing or newly emerging national environmental and resource management problems

African Journals Online: United States Minor Outlying Islands

African Journals Online (AJOL)

African Journals Online: United States Minor Outlying Islands. Home > African Journals Online: United States Minor Outlying Islands. Log in or Register to get access to full text downloads. Username, Password, Remember me, or Register · Browse By Category · Browse Alphabetically · Browse By Country · List All Titles ...

Refugee Status Required for Resettlement in the United States

Science.gov (United States)

2017-06-09

STATES REFUGEE ADMISSIONS PROGRAM FLOWCHART ...the American public’s concerns. 50 APPENDIX A UNITED STATES REFUGEE ADMISSIONS PROGRAM FLOWCHART Source: US Citizenship and Immigration...TITLE AND SUBTITLE Refugee Status Required for Resettlement in the United States 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT

Thirteen Year Loblolly Pine Growth Following Machine Application of Cut-Stump Treament Herbicides For Hardwood Stump-Sprout Control

Science.gov (United States)

Clyde G. Vidrine; John C. Adams

2002-01-01

Thirteen year growth results of 1-0 out-planted loblolly pine seedlings on nonintensively prepared up-land mixed pine-hardwood sites receiving machine applied cut-stump treatment (CST) herbicides onto hardwood stumps at the time of harvesting is presented. Plantation pine growth shows significantly higher growth for pine in the CST treated plots compared to non-CST...

Soil incorporation of logging residue affects fine-root and mycorrhizal root-tip dynamics of young loblolly pine clones

Science.gov (United States)

Seth G. Pritchard; Chris A. Maier; Kurt H. Johnsen; Andrea J. Grabman; Anne P. Chalmers

2010-01-01

Loblolly pine (Pinus taeda L.) plantations cover a large geographic area of the southeastern USA and supply a large proportion of the nation’s wood products. Research on management strategies designed to maximize wood production while also optimizing nutrient use efficiency and soil C sequestration is needed. We used minirhizotrons to quantify the effects of...

Latin America and the United States: What Do United States History Textbooks Tell Us?

Science.gov (United States)

Fleming, Dan B.

1982-01-01

Evaluates how U.S.-Latin American relations are presented in high school U.S. history textbooks. An examination of 10 textbooks published between 1977-81 revealed inadequate coverage of Latin American cultural diversity and United States foreign policy from the Latin American perspective. (AM)

Leaf-level gas-exchange uniformity and photosynthetic capacity among loblolly pine (Pinus taeda L.) genotypes of contrasting inherent genetic variation

Science.gov (United States)

Michael J. Aspinwall; John S. King; Steven E. McKeand; Jean-Christophe Domec

2011-01-01

Variation in leaf-level gas exchange among widely planted genetically improved loblolly pine (Pinus taeda L.) genotypes could impact stand-level water use, carbon assimilation, biomass production, C allocation, ecosystem sustainability and biogeochemical cycling under changing environmental conditions. We examined uniformity in leaf-level light-saturated photosynthesis...

Preparation of School Psychologists in the United States

Science.gov (United States)

Joyce-Beaulieu, Diana; Rossen, Eric

2014-01-01

School psychology in the United States continues to evolve in response to shifts in the country's demographic characteristics, an increasing focus on the importance of child mental health, together with health and education reforms. The landscape of school psychological services in the United States also is shaped through the changing roles and…

Termites and flooding affect microbial communities in decomposing wood

Science.gov (United States)

Michael D. Ulyshen; Susan V. Diehl; Dragica Jeremic

2016-01-01

Wood properties and microbial community characteristics were compared between loblolly pine (Pinus taeda L.) logs protected or unprotected from termites (Blattodea: Rhinotermitidae: Reticulitermes spp.) and other arthropods for two years in seasonally flooded and unflooded forests in the southeastern United States. Significant compositional differences were observed...

United States position on severe accidents

International Nuclear Information System (INIS)

Ross, D.F.

1988-01-01

The United States policy on severe accidents was published in 1985 for both new plant applications and for existing plants. Implementation of this policy is in progress. This policy, aided by a related safety goal policy and by analysis capabilities emerging from improved understanding of accident phenomenology, is viewed as a logical development from the pioneering work in the WASH-1400 Reactor Safety Study published by the United States Nuclear Regulatory Commission (NRC) in 1975. This work provided an estimate of the probability and consequences of severe accidents which, prior to that time, had been mostly evaluated by somewhat arbitrary assumptions dating back 30 years. The early history of severe accident evaluation is briefly summarized for the period 1957-1979. Then, the galvanizing action of Three Mile Island Unit 2 (TMI-2) on severe accident analysis, experimentation and regulation is reviewed. Expressions of US policy in the form of rulemaking, severe accident policy, safety research, safety goal policy and court decisions (on adequacy of safety) are discussed. Finally, the NRC policy as of March 1988 is stated, along with a prospective look at the next few years. (author). 19 refs

Understanding human trafficking in the United States.

Science.gov (United States)

Logan, T K; Walker, Robert; Hunt, Gretchen

2009-01-01

The topic of modern-day slavery or human trafficking has received increased media and national attention. However, to date there has been limited research on the nature and scope of human trafficking in the United States. This article describes and synthesizes nine reports that assess the U.S. service organizations' legal representative knowledge of, and experience with, human trafficking cases, as well as information from actual cases and media reports. This article has five main goals: (a) to define what human trafficking is, and is not; (b) to describe factors identified as contributing to vulnerability to being trafficked and keeping a person entrapped in the situation; (c) to examine how the crime of human trafficking differs from other kinds of crimes in the United States; (d) to explore how human trafficking victims are identified; and, (e) to provide recommendations to better address human trafficking in the United States.

Loblolly pine growth following operational vegetation management treatments compares favorably to that achieved in complete vegetation control research trials

Science.gov (United States)

Dwight K. Lauer; Harold E. Quicke

2010-01-01

Different combinations of chemical site prep and post-plant herbaceous weed control installed at three Upper Coastal Plain locations were compared in terms of year 3 loblolly (Pinus taeda L.) pine response to determine the better vegetation management regimes. Site prep treatments were different herbicide rates applied in either July or October. Site...

The Effect of Large Applications of Nutrients From Organic Waste on Biomass Allocation and Allometric Relations in Loblolly Pine

Science.gov (United States)

Scott D. Roberts; Patrick D. Gerard

2004-01-01

We applied broiler litter to an 8-year-old precommercially thinned loblolly pine (Pinus taeda L.) stand at 0, 5.6, and 23 Mg ha-1 , supplying 0, 200, and 800 kg N ha-1. A destructive harvest was implemented two growing seasons following litter application to evaluate treatment impacts on patterns of...

42 CFR 410.175 - Alien absent from the United States.

Science.gov (United States)

2010-10-01

... 42 Public Health 2 2010-10-01 2010-10-01 false Alien absent from the United States. 410.175... Alien absent from the United States. (a) Medicare does not pay Part B benefits for services furnished to... during the first full calendar month the alien is back in the United States. [53 FR 6634, Mar. 2, 1988] ...

Inventory of power plants in the United States. [By state within standard Federal Regions, using county codes

Energy Technology Data Exchange (ETDEWEB)

None

1977-12-01

The purpose of this inventory of power plants is to provide a ready reference for planners whose focus is on the state, standard Federal region, and/or national level. Thus the inventory is compiled alphabetically by state within standard Federal regions. The units are listed alphabetically within electric utility systems which in turn are listed alphabetically within states. The locations are identified to county level according to the Federal Information Processing Standards Publication Counties and County Equivalents of the States of the United States. Data compiled include existing and projected electrical generation units, jointly owned units, and projected construction units.

Norovirus in the United States

Centers for Disease Control (CDC) Podcasts

2013-09-09

Dr. Aron Hall, a CDC epidemiologist specializing in norovirus, discusses the impact of norovirus in the United States.  Created: 9/9/2013 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 9/17/2013.

Fragmentation of Continental United States Forests

Science.gov (United States)

Kurt H. Riitters; James D. Wickham; Robert V. O' Neill; K. Bruce Jones; Elizabeth R. Smith; John W. Coulston; Timothy G. Wade; Jonathan H. Smith

2002-01-01

We report a multiple-scale analysis of forest fragmentation based on 30-m (0.09 ha pixel-1) land- cover maps for the conterminous United States. Each 0.09-ha unit of forest was classified according to fragmentation indexes measured within the surrounding landscape, for five landscape sizes including 2.25, 7.29, 65.61, 590.49, and 5314.41 ha....

Trial by jury in the United States

Directory of Open Access Journals (Sweden)

Lochhead Robert

2015-10-01

Full Text Available Th e Republic of Moldova is considering the adoption of trial by jury in select criminal cases. Th e following article is intended to contribute to the discussion of that proposal. Th e article will briefl y describe the history of juries under the English common law and as adopted by the United States. It will then outline some of the basic procedures in trials by jury as currently practiced in the United States federal court system.

CEDAW in the Eyes of the United States

Directory of Open Access Journals (Sweden)

Al Shraideh Saleh

2017-12-01

Full Text Available Despite the large number of reservations registered by Member countries, making it one of the, if not the, most heavily reserved human rights treaties; the Convention on the Elimination of All Forms of Discrimination Against Women (CEDAW has managed to achieve a very high rate of states’ membership [1]. Currently, 187 countries out of the 193 United Nations Members are parties to CEDAW [2]. What is strange to digest, however, is the fact that the United States is one of the seven countries that are yet to ratify the Convention [3]. This article provides an insight into the position of the United States from the ratification of CEDAW. It examines the merits of arguments made for and against the ratification and their rationale to provide a better understanding that explains what is considered by many as a buzzling stand of the United States from the Convention.

Global context for the United States Forest Sector in 2030

Science.gov (United States)

James Turner; Joseph Buongiorno; Shushuai Zhu; Jeffrey P. Prestemon

2005-01-01

The purpose of this study was to identify markets for, and competitors to, the United States forest industries in the next 30 years. The Global Forest Products Model was used to make predictions of international demand, supply, trade, and prices, conditional on the last RPA Timber Assessment projections for the United States. It was found that the United States, Japan...

Importance of Coarse Woody Debris to Avian Communities in Loblolly Pine Forests

Energy Technology Data Exchange (ETDEWEB)

Lohr, S.M.; Gauthreaux, S.A.; Kilgo, J.C.

2001-06-14

Investigates the importance of standing and down coarse woody debris to bird communities in loblolly pine forests, researchers compared breeding and nonbreeding responses of birds among two coarse woody debris removal and control treatments. Quantification of vegetation layers to determine their effects on the experimental outcome coarse woody debris removal had no effect on the nonbreeding bird community. Most breeding and nonbreeding species used habitats with sparse midstory and well-developed understory, where as sparse canopy cover and dense midstory were important to some nonbreeding species. Snag and down coarse woody debris practices that maintain a dense understory, sparse midstory and canopy will create favorable breeding habitat.

A functional intranet for the United States Coast Guard Unit

OpenAIRE

Hannah, Robert Todd.

1998-01-01

Approved for public release; distribution in unlimited. This thesis describes the complete development process of a friendly functional Intranet for an operational United States Coast Guard (USCG) electronic Support Unit (ESU) in Alameda, California. The final product is suitable for immediate use. It may also be used as a prototype for future Intranet development efforts. The methodology used to develop a finished, working product provides the core subject matter for this thesis. The disc...

Residency training in the United States: What foreign medical ...

African Journals Online (AJOL)

FMGs) planning to pursue post-graduate residency training in the United States of America (USA). While the number of residency training positions is shrinking, and the number of United States graduates has steadily declined over the past ...

The state of amphibians in the United States

Science.gov (United States)

Muths, E.; Adams, M.J.; Grant, E.H.C.; Miller, D.; Corn, P.S.; Ball, L.C.

2012-01-01

More than 25 years ago, scientists began to identify unexplained declines in amphibian populations around the world. Much has been learned since then, but amphibian declines have not abated and the interactions among the various threats to amphibians are not clear. Amphibian decline is a problem of local, national, and international scope that can affect ecosystem function, biodiversity, and commerce. This fact sheet provides a snapshot of the state of the amphibians and introduces examples to illustrate the range of issues in the United States.

Inventory of power plants in the United States, 1993

International Nuclear Information System (INIS)

1994-12-01

The Inventory of Power Plants in the United States is prepared annually by the Survey Management Division, Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), U.S. Department of Energy (DOE). The purpose of this publication is to provide year-end statistics about electric generating units operated by electric utilities in the United States (the 50 States and the District of Columbia). The publication also provides a 10-year outlook of future generating unit additions. Data summarized in this report are useful to a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. Data presented in this report were assembled and published by the EIA to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended

Inventory of power plants in the United States, 1993

Energy Technology Data Exchange (ETDEWEB)

1994-12-01

The Inventory of Power Plants in the United States is prepared annually by the Survey Management Division, Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), U.S. Department of Energy (DOE). The purpose of this publication is to provide year-end statistics about electric generating units operated by electric utilities in the United States (the 50 States and the District of Columbia). The publication also provides a 10-year outlook of future generating unit additions. Data summarized in this report are useful to a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. Data presented in this report were assembled and published by the EIA to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended.

Use of Internet Search Data to Monitor Rotavirus Vaccine Impact in the United States, United Kingdom, and Mexico.

Science.gov (United States)

Shah, Minesh P; Lopman, Benjamin A; Tate, Jacqueline E; Harris, John; Esparza-Aguilar, Marcelino; Sanchez-Uribe, Edgar; Richardson, Vesta; Steiner, Claudia A; Parashar, Umesh D

2018-02-19

Previous studies have found a strong correlation between internet search and public health surveillance data. Less is known about how search data respond to public health interventions, such as vaccination, and the consistency of responses in different countries. In this study, we aimed to study the correlation between internet searches for "rotavirus" and rotavirus disease activity in the United States, United Kingdom, and Mexico before and after introduction of rotavirus vaccine. We compared time series of internet searches for "rotavirus" from Google Trends with rotavirus laboratory reports from the United States and United Kingdom and with hospitalizations for acute gastroenteritis in the United States and Mexico. Using time and location parameters, Google quantifies an internet query share (IQS) to measure the relative search volume for specific terms. We analyzed the correlation between IQS and laboratory and hospitalization data before and after national vaccine introductions. There was a strong positive correlation between the rotavirus IQS and laboratory reports in the United States (R2 = 0.79) and United Kingdom (R2 = 0.60) and between the rotavirus IQS and acute gastroenteritis hospitalizations in the United States (R2 = 0.87) and Mexico (R2 = 0.69) (P United States and by 70% (95% CI, 55%-86%) in Mexico. In the United Kingdom, there was a loss of seasonal variation after vaccine introduction. Rotavirus internet search data trends mirrored national rotavirus laboratory trends in the United States and United Kingdom and gastroenteritis-hospitalization data in the United States and Mexico; lower correlations were found after rotavirus vaccine introduction. Published by Oxford University Press on behalf of The Journal of the Pediatric Infectious Diseases Society 2017. This work is written by (a) US Government employee(s) and is in the public domain in the US.

Purification, Characterization, and Cloning of Cinnamyl Alcohol Dehydrogenase in Loblolly Pine (Pinus taeda L.).

Science.gov (United States)

O'malley, D M; Porter, S; Sederoff, R R

1992-04-01

Cinnamyl alcohol dehydrogenase (CAD, EC 1.1.1. 195) has been purified to homogeneity from differentiating xylem tissue and developing seeds of loblolly pine (Pinus taeda L.). The enzyme is a dimer with a native molecular weight of 82,000 and a subunit molecular weight of 44,000, and is the only form of CAD involved in lignification in differentiating xylem. High levels of loblolly pine CAD enzyme were found in nonlignifying seed tissue. Characterization of the enzyme from both seeds and xylem demonstrated that the enzyme is the same in both tissues. The enzyme has a high affinity for coniferaldehyde (K(m) = 1.7 micromolar) compared with sinapaldehyde (K(m) in excess of 100 micromolar). Kinetic data strongly suggest that coniferin is a noncompetitive inhibitor of CAD enzyme activity. Protein sequences were obtained for the N-terminus (28 amino acids) and for two other peptides. Degenerate oligonucleotide primers based on the protein sequences were used to amplify by polymerase chain reaction a 1050 base pair DNA fragment from xylem cDNA. Nucleotide sequence from the cloned DNA fragment coded for the N-terminal protein sequence and an internal peptide of CAD. The N-terminal protein sequence has little similarity with the lambdaCAD4 clone isolated from bean (MH Walter, J Grima-Pettenati, C Grand, AM Boudet, CJ Lamb [1988] Proc Natl Acad Sci USA 86:5546-5550), which has homology with malic enzyme.

Effect of seedling stock on the early stand development and physiology of improved loblolly pine (Pinus taeda L.) seedlings

Science.gov (United States)

Shakuntala Sharma; Joshua P. Adams; Jamie L. Schuler; Robert L. Ficklin; Don C. Bragg

2016-01-01

This study assessed the effects of spacing and genotype on the growth and physiology of improved loblolly pine (Pinus taeda L.) seedlings from three distinct genotypes planted in Drew County, Arkansas (USA). Genotype had a significant effect on survival and height. Clone CF Var 1 showed greater height and survival compared to other seedlings....

Licensed pertussis vaccines in the United States. History and current state.

Science.gov (United States)

Klein, Nicola P

2014-01-01

The United States switched from whole cell to acellular pertussis vaccines in the 1990s following global concerns with the safety of the whole cell vaccines. Despite high levels of acellular pertussis vaccine coverage, the United States and other countries are experiencing large pertussis outbreaks. The aim of this article is to describe the historical context which led to acellular pertussis vaccine development, focusing on vaccines currently licensed in the US, and to review evidence that waning protection following licensed acellular pertussis vaccines have been significant factors in the widespread reappearance of pertussis.

The United States initiative for international radioactive source management (ISRM)

International Nuclear Information System (INIS)

Naraine, N.; Karhnak, J.

1999-01-01

The United States takes seriously the potential problems from uncontrolled radioactive sources. To address these problems, the United States Department of State is leading the development of an initiative for International Radioactive Source Management (ISRM). The Department of State, through a number of Federal and state agencies, regulatory bodies and private industry, will endeavor to provide coordinated support to the international community, particularly through IAEA, to assist in the development and implementation of risk-based clearance levels to support import/export of radioactive contaminated metals and the tracking, management, identification, remediation, and disposition of 'lost sources' entering nation states and targeted industries. The United States believes that the international control of radioactive sources is critical in avoiding wide-spread contamination of the world metal supply. Thus the initiative has four objectives: (1) Protect sources from becoming lost (Tracking management); (2) Identify primary locations where sources have been lost (Stop future losses); (3) Locate lost sources (monitor and retrieve); and (4) Educate and train (deploy knowledge and technology). A number of efforts already underway in the United States support the overall initiative. The EPA has provided a grant to the Conference of Radiation Program Control Directors (CRCPD) to develop a nation-wide program for the disposition of orphaned radioactive sources. This program now has internet visibility and a toll-free telephone number to call for assistance in the disposal of sources. The Nuclear Regulatory Commission (NRC), the Department of Energy (DOE), and other government agencies as well as private companies are assisting CRCPD in this program. The NRC has begun a program to improve control of radioactive sources in the United States, and also intends to promulgate a regulation defining conditions for the release of materials from licensed facilities. The DOE is

Antiabortion violence in the United States.

Science.gov (United States)

Russo, Jennefer A; Schumacher, Kristin L; Creinin, Mitchell D

2012-11-01

This study was conducted to determine if an association exists between the amount of harassment and violence directed against abortion providers and the restrictiveness of state laws relating to family planning. We used responses from a July 2010 survey of 357 abortion providers in 50 states to determine their experience of antiabortion harassment and violence. Their responses were grouped and analyzed in relation to a published grading of state laws in the United States (A, B, C, D and F) as they relate to restrictions on family planning services. Group by group comparison of respondents illustrates that the difference in the number of reported incidents of minor vandalism by group is statistically significant (A vs. C, p=.07; A vs. D, p=.017; A vs. F, p=.0002). Incidents of harassment follow a similar pattern. There were no differences noted overall for violence or major vandalism. Major violence, including eight murders, is a new occurrence in the last two decades. Harassment of abortion providers in the United States has an association with the restrictiveness of state abortion laws. In the last two decades, murder of abortion providers has become an unfortunate part of the violence. Copyright © 2012 Elsevier Inc. All rights reserved.

Masturbation in the United States.

Science.gov (United States)

Das, Aniruddha

2007-01-01

Using data from the nationally representative National Health and Social Life Survey, this study queried the correlates of masturbation in the United States in 1992. Among those aged 18-60, 38% (CI, 35-41) of women and 61% (CI, 57-65) of men reported any masturbation over the preceding year. The system of factors underlying masturbation was similar for both genders, consistent with a convergence in gender patterns of sexual expression in the United States. Among both women and men, masturbation responded to a stable sexualized personality pattern, catalyzed by early-life factors and manifested in current sexual traits. Strikingly, the masturbation-partnered sex linkage, often conceptualized either as compensating for unsatisfying sex or complementing a satisfactory sex life, appeared to be bimodal for both genders. For some, masturbation complemented an active and pleasurable sex life, while among others, it compensated for a lack of partnered sex or satisfaction in sex.

Research on Anoplophora glabripennis in the United States

Science.gov (United States)

Robert A. Haack

2003-01-01

In the mid-1990s it was estimated that more than 400 exotic (non-native) forest insects had already become established in the United States (HAACK and BYLER, 1993; MATTSON et al., 1994; NIEMELA and MATTSON, 1996). This number has continued to grow with new exotics discovered annually in the United States (HAACK, 2002; HAACK and POLAND, 2001; HAACK et al., 2002). One...

Leading Causes of Death in Males United States, 2010

Science.gov (United States)

... What’s this? Submit What’s this? Submit Button Leading Causes of Death in Males and Females, United States Recommend on ... to current and previous listings for the leading causes of death for males and females in the United States. ...

76 FR 18198 - European Union-United States Atlantis Program

Science.gov (United States)

2011-04-01

... DEPARTMENT OF EDUCATION European Union-United States Atlantis Program AGENCY: Office of...)--Special Focus Competition: European Union-(EU) United States (U.S.) Atlantis Program Notice inviting... and Culture, European Commission for funding under a separate but parallel EU competition. Within this...

Development of Water Quality Modeling in the United States

Science.gov (United States)

This presentation describes historical trends in water quality model development in the United States, reviews current efforts, and projects promising future directions. Water quality modeling has a relatively long history in the United States. While its origins lie in the work...

Impact of initial spacing on yield per acre and wood quality of unthinned loblolly pine at age 21

Science.gov (United States)

Alexander, III Clark; Richard F. Daniels; Lewis Jordan; Laurie Schimleck

2010-01-01

The market for southern pine first thinnings is soft. Thus, forest managers are planting at wider spacings, and using weed control and fertilization to grow chipping-saw and sawtimber trees in shorter rotations. A 21-year-old unthinned spacing study was sampled to determine the effect of initial spacing on wood quality and yield per acre of planted loblolly pine (

Solar energy in the United States

International Nuclear Information System (INIS)

Ochoa, D.; Slaoui, A.; Soler, R.; Bermudez, V.

2009-01-01

Written by a group of five French experts who visited several research centres, innovating companies and solar power stations in the United States, this report first proposes an overview of solar energy in the United States, indicating and commenting the respective shares of different renewable energies in the production, focusing on the photovoltaic energy production and its RD sector. The second part presents industrial and research activities in the solar sector, and more specifically photovoltaic technologies (silicon and thin layer technology) and solar concentrators (thermal solar concentrators, photovoltaic concentrators). The last chapter presents the academic research activities in different universities (California Tech Beckman Institute, Stanford, National Renewable Energy Laboratory, Colorado School of Mines)

Planting density and silvicultural intensity impacts on loblolly pine stand development in the western gulf coastal plain through age 8

Science.gov (United States)

Michael B. Kane; Dehai Zhao; John W. Rheney; Michael G. Messina; Mohd S. Rahman; Nicholas Chappell

2012-01-01

Commercial plantation growers need to know how planting density and cultural regime intensity affect loblolly pine plantation productivity, development and value to make sound management decisions. This knowledge is especially important given the diversity of traditional products, such as pulpwood, chip-n-saw, and sawtimber, and potential products, such as bioenergy...

75 FR 22551 - United States Standards for Grades of Frozen Blueberries

Science.gov (United States)

2010-04-29

...] United States Standards for Grades of Frozen Blueberries AGENCY: Agricultural Marketing Service, USDA... United States Standards for Grades of Frozen Blueberries. After considering the comments received... . The United States Standards for Grades of Frozen Blueberries are available by accessing the AMS Web...

77 FR 64031 - United States-Peru Trade Promotion Agreement

Science.gov (United States)

2012-10-18

... Trade Promotion Agreement AGENCIES: U.S. Customs and Border Protection, Department of Homeland Security... tariff treatment and other customs-related provisions of the United States-Peru Trade Promotion Agreement... other customs-related provisions of the United States-Peru Trade Promotion Agreement (PTPA). Please...

Inching toward incrementalism: federalism, devolution, and health policy in the United States and the United Kingdom.

Science.gov (United States)

Sparer, Michael S; France, George; Clinton, Chelsea

2011-02-01

In the United States, the recently enacted Patient Protection and Affordable Care Act of 2010 envisions a significant increase in federal oversight over the nation's health care system. At the same time, however, the legislation requires the states to play key roles in every aspect of the reform agenda (such as expanding Medicaid programs, creating insurance exchanges, and working with providers on delivery system reforms). The complicated intergovernmental partnerships that govern the nation's fragmented and decentralized system are likely to continue, albeit with greater federal oversight and control. But what about intergovernmental relations in the United Kingdom? What impact did the formal devolution of power in 1999 to Scotland, Wales, and Northern Ireland have on health policy in those nations, and in the United Kingdom more generally? Has devolution begun a political process in which health policy in the United Kingdom will, over time, become increasingly decentralized and fragmented, or will this "state of unions" retain its long-standing reputation as perhaps the most centralized of the European nations? In this article, we explore the federalist and intergovernmental implications of recent reforms in the United States and the United Kingdom, and we put forward the argument that political fragmentation (long-standing in the United States and just emerging in the United Kingdom) produces new intergovernmental partnerships that, in turn, produce incremental growth in overall government involvement in the health care arena. This is the impact of what can be called catalytic federalism.

Applying 3-PG, a simple process-based model designed to produce practical results, to data from loblolly pine experiments

Science.gov (United States)

Joe J. Landsberg; Kurt H. Johnsen; Timothy J. Albaugh; H. Lee Allen; Steven E. McKeand

2001-01-01

3-PG is a simple process-based model that requires few parameter values and only readily available input data. We tested the structure of the model by calibrating it against loblolly pine data from the control treatment of the SETRES experiment in Scotland County, NC, then altered the fertility rating to simulate the effects of fertilization. There was excellent...

Hydrological Components of a Young Loblolly Pine Plantation on a Sandy Soil with Estimates of Water Use and Loss

Science.gov (United States)

Deborah A. Abrahamson; Phillip M. Dougherty; Stanley J. Zarnoch

1998-01-01

Fertilizer and irrigation treatments were applied in a 7- to l0-year-old loblolly pine (Pinus taeda L.) plantation on a sandy soil near Laurinburg, North Carolina. Rainfall, throughfall, stemflow, and soil water content were measured throughout the study period. Monthly interception losses ranged from 4 to 15% of rainfall. Stemflow ranged from 0.2...

THE UNITED STATES EDUCATIONAL SYSTEM

OpenAIRE

David Suriñach Fernández

2017-01-01

The United States educational system is very complex. Due to the fact a big number of agents take play of its regulation, the differences between the education from one State compared to the education from another, or even between school districts, might be considerable. The last two largest federal education initiatives, No Child Left Behind and Race to the Top, have had a huge impact on the American education system. The escalation of the standardized test throughout the whole country as a ...

Inventory of Power Plants in the United States, October 1992

Energy Technology Data Exchange (ETDEWEB)

1993-10-27

The Inventory of Power Plants in the United States is prepared annually by the Survey Management Division, Office of Coal, Nuclear, Electric and Alternate Fuels, Energy Information Administration (EIA), US Department of Energy (DOE). The purpose of this publication is to provide year-end statistics about electric generating units operated by electric utilities in the United States (the 50 States and the District of Columbia). The publication also provides a 10-year outlook of future generating unit additions. Data summarized in this report are useful to a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. Data presented in this report were assembled and published by the EIA to fulfill its data collection and dissemination responsibilities as specified in the Federal Energy Administration Act of 1974 (Public Law 93-275) as amended. The report is organized into the following chapters: Year in Review, Operable Electric Generating Units, and Projected Electric Generating Unit Additions. Statistics presented in these chapters reflect the status of electric generating units as of December 31, 1992.

78 FR 63052 - United States-Panama Trade Promotion Agreement

Science.gov (United States)

2013-10-23

...-Panama Trade Promotion Agreement AGENCY: U.S. Customs and Border Protection, Department of Homeland... Trade Promotion Agreement entered into by the United States and the Republic of Panama. DATES: Interim... and the Republic of Panama (the ``Parties'') signed the United States-Panama Trade Promotion Agreement...

United States Military in Central Asia: Beyond Operation Enduring Freedom

Science.gov (United States)

2009-10-23

Malinowski , advocacy director for Human Rights Watch, stated, “the United States is most effective in promoting liberty around the world when people...26 U.S. President, The National Security Strategy of the United States of America, page? 27 Thomas Malinowski , “Testimony

31 CFR Appendix D to Subpart A of... - United States Secret Service

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false United States Secret Service D...—United States Secret Service 1. In general. This appendix applies to the United States Secret Service. 2. Public reading room. The United States Secret Service will provide a room on an ad hoc basis when...

76 FR 68271 - To Modify the Harmonized Tariff Schedule of the United States

Science.gov (United States)

2011-11-03

... the Convention and do not run counter to the national economic interest of the United States. I have... United States obligations under the Convention and do not run counter to the national economic interest of the United States. 7. On June 6, 2003, the United States and Chile entered into the United States...

Human prion diseases in the United States.

Directory of Open Access Journals (Sweden)

Robert C Holman

Full Text Available BACKGROUND: Prion diseases are a family of rare, progressive, neurodegenerative disorders that affect humans and animals. The most common form of human prion disease, Creutzfeldt-Jakob disease (CJD, occurs worldwide. Variant CJD (vCJD, a recently emerged human prion disease, is a zoonotic foodborne disorder that occurs almost exclusively in countries with outbreaks of bovine spongiform encephalopathy. This study describes the occurrence and epidemiology of CJD and vCJD in the United States. METHODOLOGY/PRINCIPAL FINDINGS: Analysis of CJD and vCJD deaths using death certificates of US residents for 1979-2006, and those identified through other surveillance mechanisms during 1996-2008. Since CJD is invariably fatal and illness duration is usually less than one year, the CJD incidence is estimated as the death rate. During 1979 through 2006, an estimated 6,917 deaths with CJD as a cause of death were reported in the United States, an annual average of approximately 247 deaths (range 172-304 deaths. The average annual age-adjusted incidence for CJD was 0.97 per 1,000,000 persons. Most (61.8% of the CJD deaths occurred among persons >or=65 years of age for an average annual incidence of 4.8 per 1,000,000 persons in this population. Most deaths were among whites (94.6%; the age-adjusted incidence for whites was 2.7 times higher than that for blacks (1.04 and 0.40, respectively. Three patients who died since 2004 were reported with vCJD; epidemiologic evidence indicated that their infection was acquired outside of the United States. CONCLUSION/SIGNIFICANCE: Surveillance continues to show an annual CJD incidence rate of about 1 case per 1,000,000 persons and marked differences in CJD rates by age and race in the United States. Ongoing surveillance remains important for monitoring the stability of the CJD incidence rates, and detecting occurrences of vCJD and possibly other novel prion diseases in the United States.

Competitive Electricity Market Regulation in the United States: A Primer

Energy Technology Data Exchange (ETDEWEB)

Flores-Espino, Francisco [National Renewable Energy Lab. (NREL), Golden, CO (United States); Tian, Tian [National Renewable Energy Lab. (NREL), Golden, CO (United States); Chernyakhovskiy, Ilya [National Renewable Energy Lab. (NREL), Golden, CO (United States); Chernyakhovskiy, Ilya [National Renewable Energy Lab. (NREL), Golden, CO (United States); Miller, Mackay [National Grid, Warwick (United Kingdom)

2016-12-01

The electricity system in the United States is a complex mechanism where different technologies, jurisdictions and regulatory designs interact. Today, two major models for electricity commercialization operate in the United States. One is the regulated monopoly model, in which vertically integrated electricity providers are regulated by state commissions. The other is the competitive model, in which power producers can openly access transmission infrastructure and participate in wholesale electricity markets. This paper describes the origins, evolution, and current status of the regulations that enable competitive markets in the United States.

Health, United States, 2012: Men's Health

Science.gov (United States)

... Mailing List Previous Reports Suggested Citation Related Sites Purchase Health, United States Behavioral Health Report Children’s ... with Internet Explorer may experience difficulties in directly accessing links to Excel files ...

Dengue Fever in the United States

Centers for Disease Control (CDC) Podcasts

Dr. Amesh Adalja, an associate at the Center for Biosecurity and clinical assistant professor at the University of Pittsburgh School, of Medicine, discusses dengue fever outbreaks in the United States.

15 CFR 971.209 - Processing outside the United States.

Science.gov (United States)

2010-01-01

... 15 Commerce and Foreign Trade 3 2010-01-01 2010-01-01 false Processing outside the United States... THE ENVIRONMENTAL DATA SERVICE DEEP SEABED MINING REGULATIONS FOR COMMERCIAL RECOVERY PERMITS Applications Contents § 971.209 Processing outside the United States. (a) Except as provided in this section...

Obesity: A United States Strategic Imperative

Science.gov (United States)

2013-04-01

States Department of Veterans Affairs 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) Dr. Thomas ...Army Ms. Karen Malebranche United States Department of Veterans Affairs Project Adviser Dr. Thomas Williams U.S. Army War...per American has increased by 57 pounds per year ( poultry representing 46 pounds).86 Surprisingly however, the percentage of calories from meat

Estimating long-term carbon sequestration patterns in even- and uneven-aged southern pine stands

Science.gov (United States)

Don C. Bragg; James M. Guldin

2010-01-01

Carbon (C) sequestration has become an increasingly important consideration for forest management in North America, and has particular potential in pine-dominated forests of the southern United States. Using existing literature on plantations and long-term studies of naturally regenerated loblolly (Pinus taeda) and shortleaf (Pinus echinata) pine-dominated stands on...

Cholera in the United States

Centers for Disease Control (CDC) Podcasts

2011-11-08

Anna Newton, Surveillance Epidemiologist at CDC, discusses cholera that was brought to the United States during an outbreak in Haiti and the Dominican Republic (Hispaniola).  Created: 11/8/2011 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 11/8/2011.

The United States

International Nuclear Information System (INIS)

Art, R.J.

1991-01-01

This paper reports that at least in the national security arena, the outcomes of bureaucratic infighting and domestic political struggles are not determined wholly by what goes on with the state. Rather struggles among contending groups are greatly affected by what is perceived to be happening outside the nation. Because external conditions give greater potency to some domestic forces over other, the external environment is never neutral in its domestic impact. The decisions of the period 1950-53 discussed above illustrate the point. But so too do the decisions of 1947, 1960-61 and 1969-72. In the 1947 case, Soviet intransigence provoked US nuclear rearmament. In the 1960-61 case, extended deterrent considerations pushed the United States to preserve its again newly discovered nuclear superiority. In the 1969-72 case, a Soviet determination to remain equal forced US acceptance of nuclear equality. And perhaps the best evidence of all, the perpetuation of parity ended the US inclination to resort to nuclear brinkmanship. In each instance, concerns about relative position heavily affected nuclear choice. Finally, the events of the past three years testify to the effects of international events on domestic choice. Under the terms of the 1987 INF Treaty, the two superpowers decided to dismantle and destroy an entire class of missiles of intermediate range (500-3000 kilometers) that both had deployed in Europe in the 1970s and 1980s, and in their June 1990 joint statement on strategic nuclear weapons, President Gorbachev and Brush agreed to cut the number of Soviet and US long range nuclear forces by 30 per cent. This agreement marks a watershed in US-Soviet strategic arm negotiations because for the first time the United States and the Soviet Union agreed in principals to reduce the number of weapons aimed at one another. Between 1985 and 1990 the cold war was brought to a close

Malaria Surveillance - United States, 2015.

Science.gov (United States)

Mace, Kimberly E; Arguin, Paul M; Tan, Kathrine R

2018-05-04

Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles species mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission. Malaria surveillance in the United States is conducted to provide information on its occurrence (e.g., temporal, geographic, and demographic), guide prevention and treatment recommendations for travelers and patients, and facilitate transmission control measures if locally acquired cases are identified. This report summarizes confirmed malaria cases in persons with onset of illness in 2015 and summarizes trends in previous years. Malaria cases diagnosed by blood film microscopy, polymerase chain reaction, or rapid diagnostic tests are reported to local and state health departments by health care providers or laboratory staff members. Case investigations are conducted by local and state health departments, and reports are transmitted to CDC through the National Malaria Surveillance System (NMSS), the National Notifiable Diseases Surveillance System (NNDSS), or direct CDC consultations. CDC reference laboratories provide diagnostic assistance and conduct antimalarial drug resistance marker testing on blood samples submitted by health care providers or local or state health departments. This report summarizes data from the integration of all NMSS and NNDSS cases, CDC reference laboratory reports, and CDC clinical consultations. CDC received reports of 1,517 confirmed malaria cases, including one congenital case, with an onset of symptoms in 2015 among persons who received their diagnoses in the United States. Although the number of

Malaria Surveillance - United States, 2014.

Science.gov (United States)

Mace, Kimberly E; Arguin, Paul M

2017-05-26

Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission. Malaria surveillance in the United States is conducted to identify episodes of local transmission and to guide prevention recommendations for travelers. This report summarizes cases in persons with onset of illness in 2014 and trends during previous years. Malaria cases diagnosed by blood film, polymerase chain reaction, or rapid diagnostic tests are reported to local and state health departments by health care providers or laboratory staff. Case investigations are conducted by local and state health departments, and reports are transmitted to CDC through the National Malaria Surveillance System, National Notifiable Diseases Surveillance System, or direct CDC consultations. CDC conducts antimalarial drug resistance marker testing on blood samples submitted by health care providers or local or state health departments. Data from these reporting systems serve as the basis for this report. CDC received reports of 1,724 confirmed malaria cases, including one congenital case and two cryptic cases, with onset of symptoms in 2014 among persons in the United States. The number of confirmed cases in 2014 is consistent with the number of confirmed cases reported in 2013 (n = 1,741; this number has been updated from a previous publication to account for delayed reporting for persons with symptom onset occurring in late 2013). Plasmodium falciparum, P. vivax, P. ovale, and P. malariae were identified in 66.1%, 13.3%, 5.2%, and 2.7% of cases, respectively

26 CFR 1.993-7 - Definition of United States.

Science.gov (United States)

2010-04-01

... 26 Internal Revenue 10 2010-04-01 2010-04-01 false Definition of United States. 1.993-7 Section 1.993-7 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Domestic International Sales Corporations § 1.993-7 Definition of United States...

26 CFR 49.4261-5 - Payments made outside the United States.

Science.gov (United States)

2010-04-01

... travel under section 4262(b), the tax imposed by section 4261(b), shall not apply unless the... made outside the United States for one-way or round-trip transportation between a point within the United States and a point outside the United States. (b) Transportation between two or more points in the...

42 CFR 455.21 - Cooperation with State Medicaid fraud control units.

Science.gov (United States)

2010-10-01

... 42 Public Health 4 2010-10-01 2010-10-01 false Cooperation with State Medicaid fraud control units... Detection and Investigation Program § 455.21 Cooperation with State Medicaid fraud control units. In a State with a Medicaid fraud control unit established and certified under subpart C of this part, (a) The...

Low birth weight in the United States.

Science.gov (United States)

Goldenberg, Robert L; Culhane, Jennifer F

2007-02-01

Pregnancy outcomes in the United States and other developed countries are considerably better than those in many developing countries. However, adverse pregnancy outcomes are generally more common in the United States than in other developed countries. Low-birth-weight infants, born after a preterm birth or secondary to intrauterine growth restriction, account for much of the increased morbidity, mortality, and cost. Wide disparities exist in both preterm birth and growth restriction among different population groups. Poor and black women, for example, have twice the preterm birth rate and higher rates of growth restriction than do most other women. Low birth weight in general is thought to place the infant at greater risk of later adult chronic medical conditions, such as diabetes, hypertension, and heart disease. Of interest, maternal thinness is a strong predictor of both preterm birth and fetal growth restriction. However, in the United States, several nutritional interventions, including high-protein diets, caloric supplementation, calcium and iron supplementation, and various other vitamin and mineral supplementations, have not generally reduced preterm birth or growth restriction. Bacterial intrauterine infections play an important role in the etiology of the earliest preterm births, but, at least to date, antibiotic treatment either before labor for risk factors such as bacterial vaginosis or during preterm labor have not consistently reduced the preterm birth rate. Most interventions have failed to reduce preterm birth or growth restriction. The substantial improvement in newborn survival in the United States over the past several decades is mostly due to better access to improved neonatal care for low-birth-weight infants.

31 CFR 594.315 - United States person; U.S. person.

Science.gov (United States)

2010-07-01

... (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY GLOBAL TERRORISM SANCTIONS REGULATIONS General Definitions § 594.315 United States person; U.S. person. The term United States person or...

Stigma and abortion complications in the United States.

Science.gov (United States)

Harris, Lisa H

2012-12-01

Abortion is highly stigmatized in the United States and elsewhere. As a result, many women who seek or undergo abortion keep their decision a secret. In many regions of the world, stigma is a recognized contributor to maternal morbidity and mortality from unsafe abortion, even when abortion is legal. Women may self-induce abortion in ways that are dangerous, or seek unsafe clandestine abortion from inadequately trained health care providers out of fear that their sexual activity, pregnancy, or abortion will be exposed if they present to a safe, licensed facility. However, unsafe abortion rarely occurs in the United States, and accordingly, stigma as a cause of unsafe abortion in the United States context has not been described. I consider the relationship of stigma to two serious abortion complications experienced by U.S. patients. Both patients wished to keep their abortion decision a secret from family and friends, and in both cases, their inability to disclose their abortion contributed to life-threatening complications. The experiences of these patients suggest that availability of legal abortion services in the United States may not be enough to keep all women safe. The cases also challenge the rhetoric that "abortion hurts women," suggesting instead that abortion stigma hurts women.

Vanadium recycling in the United States in 2004

Science.gov (United States)

Goonan, Thomas G.

2011-01-01

As one of a series of reports that describe the recycling of metal commodities in the United States, this report discusses the flow of vanadium in the U.S. economy in 2004. This report includes a description of vanadium supply and demand in the United States and illustrates the extent of vanadium recycling and recycling trends. In 2004, apparent vanadium consumption, by end use, in the United States was 3,820 metric tons (t) in steelmaking and 232 t in manufacturing, of which 17 t was for the production of superalloys and 215 t was for the production of other alloys, cast iron, catalysts, and chemicals. Vanadium use in steel is almost entirely dissipative because recovery of vanadium from steel scrap is chemically impeded under the oxidizing conditions in steelmaking furnaces. The greatest amount of vanadium recycling is in the superalloy, other-alloy, and catalyst sectors of the vanadium market. Vanadium-bearing catalysts are associated with hydrocarbon recovery and refining in the oil industry. In 2004, 2,850 t of vanadium contained in alloy scrap and spent catalysts was recycled, which amounted to about 44 percent of U.S. domestic production. About 94 percent of vanadium use in the United States was dissipative (3,820 t in steel/4,050 t in steel+fabricated products).

The voluntary safeguards offer of the United States

International Nuclear Information System (INIS)

Houck, F.S.

1985-01-01

During negotiations of the Treaty on the Non-Proliferation of Nuclear Weapons (NPT) concerns were expressed by non-nuclear-weapon States that their acceptance of Agency safeguards would put them at a disadvantage vis-a-vis the nuclear-weapon States. To allay these concerns, the United States and the United Kingdom in December 1967 made voluntary offers to accept Agency safeguards on their peaceful nuclear activities. Subsequently, France made a voluntary offer, the safeguards agreement for which was approved by the IAEA Board of Governors in February 1978, with a view to encouraging acceptance of Agency safeguards by additional States. More recently, in February 1985 the Board approved the safeguards agreement for the voluntary offer of the USSR, made inter alia to encourage further acceptance of Agency safeguards. These safeguards agreements with nuclear-weapon-States have two important features in common: Namely, they result from voluntary offers to accept safeguards rather than from multilateral or bilateral undertakings, and they give the Agency the right but generally not an obligation to apply its safeguards. The agreements differ in certain respects, the most noteworthy of which is the scope of the nuclear activities covered by each offer. The agreements of the United States and United Kingdom are the broadest, covering all peaceful nuclear activities in each country. The safeguards agreement for the US voluntary offer has been in force since December 1980. Now is an appropriate time to review the experience with the agreement's implementation during its first four years, as well as its history and salient features

United States Navy DL Perspective

Science.gov (United States)

2010-08-10

United States Navy DL Perspective CAPT Hank Reeves Navy eLearning Project Director 10 August 2010 Report Documentation Page Form ApprovedOMB No...Marine Corps (USMC) Navy eLearning Ongoing Shared with USMC, Coast Guard 9 NeL Help Site https://ile-help.nko.navy.mil/ile/ https://s-ile

26 CFR 1.953-2 - Actual United States risks.

Science.gov (United States)

2010-04-01

... being the promotion of such sales to United States retail outlets by advertising in trade publications... 26 Internal Revenue 10 2010-04-01 2010-04-01 false Actual United States risks. 1.953-2 Section 1.953-2 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX...

31 CFR 595.315 - United States person; U.S. person.

Science.gov (United States)

2010-07-01

... (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM SANCTIONS REGULATIONS General Definitions § 595.315 United States person; U.S. person. The term United States person or U.S...

United States Interagency Elevation Inventory (USIEI)

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The U.S. Interagency Elevation Inventory displays high-accuracy topographic and bathymetric data for the United States and its territories. The project is a...

Accelerated Stem Growth Rates and Improved Fiber Properties of Loblolly Pine: Functional Analysis Of CyclinD from Pinus taeda

Energy Technology Data Exchange (ETDEWEB)

Dr. John Cairney, School of Biology and Institute of Paper Science and Technology @ Georgia Tech, Georgia Institute of Technology; Dr. Gary Peter, University of Florida; Dr. Ulrika Egertsdotter, Dept. of Forestry, Virgina Tech; Dr. Armin Wagner, New Zealand Forest Research Institute Ltd. (Scion Research.)

2005-11-30

A sustained supply of low-cost, high quality raw materials is essential for the future success of the U.S. forest products industry. To maximize stem (trunk) growth, a fundamental understanding of the molecular mechanisms that regulate cell divisions within the cambial meristem is essential. We hypothesize that auxin levels within the cambial meristem regulate cyclin gene expression and this in turn controls cell cycle progression as occurs in all eukaryotic cells. Work with model plant species has shown that ectopic overexpression of cyclins promotes cell division thereby increasing root growth > five times. We intended to test whether ectopic overexpression of cambial cyclins in the cambial zone of loblolly pine also promotes cell division rates that enhance stem growth rates. Results generated in model annual angiosperm systems cannot be reliably extrapolated to perennial gymnosperms, thus while the generation and development of transgenic pine is time consuming, this is the necessary approach for meaningful data. We succeeded in isolating a cyclin D gene and Clustal analysis to the Arabidopsis cyclin D gene family indicates that it is more closely related to cyclin D2 than D1 or D3 Using this gene as a probe we observed a small stimulation of cyclin D expression in somatic embryo culture upon addition of auxin. We hypothesized that trees with more cells in the vascular cambial and expansion zones will have higher cyclin mRNA levels. We demonstrated that in trees under compressive stress where the rates of cambial divisions are increased on the underside of the stem relative to the top or opposite side, there was a 20 fold increase in the level of PtcyclinD1 mRNA on the compressed side of the stem relative to the opposite. This suggests that higher secondary growth rates correlate with PtcyclinD1 expression. We showed that larger diameter trees show more growth during each year and that the increased growth in loblolly pine trees correlates with more cell

Rehabilitation of Understocked Loblolly-Shortleaf Pine Stands - II. Development of Intermediate and Suppressed Trees Following Release in Natural Stands

Science.gov (United States)

James B. Baker; Michael G. Shelton

1998-01-01

Development of 86 intermediate and suppressed loblolly pine (Pinus taeda L.) trees, that had been recently released from overtopping pines and hardwoods, was monitored over a 15 year period. The trees were growing in natural stands on good sites (site index = 90 ft at 50 years) that had been recently cut to stocking levels ranging from 10 to 50 percent. At time of...

Long-term simulations of forest management impacts on carbon storage from loblolly pine plantations in the Southern U.S.

Science.gov (United States)

Huei-Jin Wang; Philip J. Radtke; Stephen P. Prisley

2012-01-01

Accounting for forest components in carbon accounting systems may be insufficient when substantial amounts of sequestered carbon are harvested and converted to wood products in use and in landfill. The potential of forest offset – in-woods aboveground carbon storage, carbon stored in harvested wood, and energy offset by burning harvested wood – from loblolly pine...

Seasonal sucrose metabolism in individual first-order lateral roots of nine-year-old loblolly pine (Pinus taeda L.) trees

Science.gov (United States)

Shi-Jean S. Sung; Paul P. Kormanik; C.C. Black

1995-01-01

Loblolly pine seedlings have distinctive temporal and spatial patterns of sucrose metabolism and growth with stems and roots as the major sucrose sinks, respectively, from spring to mid-fall and from mid-fall to early winter. Both nursery-grown and outplanted seedlings up to the age of 3 years followed this pattern. However, there have been no reports on the seasonal...

China's international trade and air pollution in the United States.

Science.gov (United States)

Lin, Jintai; Pan, Da; Davis, Steven J; Zhang, Qiang; He, Kebin; Wang, Can; Streets, David G; Wuebbles, Donald J; Guan, Dabo

2014-02-04

China is the world's largest emitter of anthropogenic air pollutants, and measurable amounts of Chinese pollution are transported via the atmosphere to other countries, including the United States. However, a large fraction of Chinese emissions is due to manufacture of goods for foreign consumption. Here, we analyze the impacts of trade-related Chinese air pollutant emissions on the global atmospheric environment, linking an economic-emission analysis and atmospheric chemical transport modeling. We find that in 2006, 36% of anthropogenic sulfur dioxide, 27% of nitrogen oxides, 22% of carbon monoxide, and 17% of black carbon emitted in China were associated with production of goods for export. For each of these pollutants, about 21% of export-related Chinese emissions were attributed to China-to-US export. Atmospheric modeling shows that transport of the export-related Chinese pollution contributed 3-10% of annual mean surface sulfate concentrations and 0.5-1.5% of ozone over the western United States in 2006. This Chinese pollution also resulted in one extra day or more of noncompliance with the US ozone standard in 2006 over the Los Angeles area and many regions in the eastern United States. On a daily basis, the export-related Chinese pollution contributed, at a maximum, 12-24% of sulfate concentrations over the western United States. As the United States outsourced manufacturing to China, sulfate pollution in 2006 increased in the western United States but decreased in the eastern United States, reflecting the competing effect between enhanced transport of Chinese pollution and reduced US emissions. Our findings are relevant to international efforts to reduce transboundary air pollution.

Comparison of Plastic Surgery Residency Training in United States and China.

Science.gov (United States)

Zheng, Jianmin; Zhang, Boheng; Yin, Yiqing; Fang, Taolin; Wei, Ning; Lineaweaver, William C; Zhang, Feng

2015-12-01

Residency training is internationally recognized as the only way for the physicians to be qualified to practice independently. China has instituted a new residency training program for the specialty of plastic surgery. Meanwhile, plastic surgery residency training programs in the United States are presently in a transition because of restricted work hours. The purpose of this study is to compare the current characteristics of plastic surgery residency training in 2 countries. Flow path, structure, curriculum, operative experience, research, and evaluation of training in 2 countries were measured. The number of required cases was compared quantitatively whereas other aspects were compared qualitatively. Plastic surgery residency training programs in 2 countries differ regarding specific characteristics. Requirements to become a plastic surgery resident in the United States are more rigorous. Ownership structure of the regulatory agency for residency training in 2 countries is diverse. Training duration in the United States is more flexible. Clinical and research training is more practical and the method of evaluation of residency training is more reasonable in the United States. The job opportunities after residency differ substantially between 2 countries. Not every resident has a chance to be an independent surgeon and would require much more training time in China than it does in the United States. Plastic surgery residency training programs in the United States and China have their unique characteristics. The training programs in the United States are more standardized. Both the United States and China may complement each other to create training programs that will ultimately provide high-quality care for all people.

19 CFR 10.46 - Articles for the United States.

Science.gov (United States)

2010-04-01

... 19 Customs Duties 1 2010-04-01 2010-04-01 false Articles for the United States. 10.46 Section 10... THE TREASURY ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC. General Provisions Articles for Institutions § 10.46 Articles for the United States. Pursuant to subheadings 9808.00.10 and 9808...

Purification, Characterization, and Cloning of Cinnamyl Alcohol Dehydrogenase in Loblolly Pine (Pinus taeda L.) 1

Science.gov (United States)

O'Malley, David M.; Porter, Stephanie; Sederoff, Ronald R.

1992-01-01

Cinnamyl alcohol dehydrogenase (CAD, EC 1.1.1. 195) has been purified to homogeneity from differentiating xylem tissue and developing seeds of loblolly pine (Pinus taeda L.). The enzyme is a dimer with a native molecular weight of 82,000 and a subunit molecular weight of 44,000, and is the only form of CAD involved in lignification in differentiating xylem. High levels of loblolly pine CAD enzyme were found in nonlignifying seed tissue. Characterization of the enzyme from both seeds and xylem demonstrated that the enzyme is the same in both tissues. The enzyme has a high affinity for coniferaldehyde (Km = 1.7 micromolar) compared with sinapaldehyde (Km in excess of 100 micromolar). Kinetic data strongly suggest that coniferin is a noncompetitive inhibitor of CAD enzyme activity. Protein sequences were obtained for the N-terminus (28 amino acids) and for two other peptides. Degenerate oligonucleotide primers based on the protein sequences were used to amplify by polymerase chain reaction a 1050 base pair DNA fragment from xylem cDNA. Nucleotide sequence from the cloned DNA fragment coded for the N-terminal protein sequence and an internal peptide of CAD. The N-terminal protein sequence has little similarity with the λCAD4 clone isolated from bean (MH Walter, J Grima-Pettenati, C Grand, AM Boudet, CJ Lamb [1988] Proc Natl Acad Sci USA 86:5546-5550), which has homology with malic enzyme. ImagesFigure 2Figure 3 PMID:16668801

26 CFR 1.864-2 - Trade or business within the United States.

Science.gov (United States)

2010-04-01

... States, as his agent to effect transactions in the United States in stocks and securities for the account... A ordinarily effects transactions in the United States in stocks or securities. Under the agency..., effects transactions in the United States in stocks or securities for the partnership's own account or...

Eleventh-year response of loblolly pine and competing vegetation to woody and herbaceous plant control on a Georgia flatwoods site

Science.gov (United States)

Bruce R. Zutter; James H. Miller

1998-01-01

Through 11 growing seasons, growth of loblolly pine (Pinus taeda L.) increased after control of herbaceous, woody, or both herbaceous and woody vegetation (total control) for the first 3 years after planting on a bedded site in the Georgia coastal flatwoods. Gains in stand volume index from controlling either herbaceous or woody vegetation alone were approximately two-...

Taxation of United States general aviation

Science.gov (United States)

Sobieralski, Joseph Bernard

General aviation in the United States has been an important part of the economy and American life. General aviation is defined as all flying excluding military and scheduled airline operations, and is utilized in many areas of our society. The majority of aircraft operations and airports in the United States are categorized as general aviation, and general aviation contributes more than one percent to the United States gross domestic product each year. Despite the many benefits of general aviation, the lead emissions from aviation gasoline consumption are of great concern. General aviation emits over half the lead emissions in the United States or over 630 tons in 2005. The other significant negative externality attributed to general aviation usage is aircraft accidents. General aviation accidents have caused over 8000 fatalities over the period 1994-2006. A recent Federal Aviation Administration proposed increase in the aviation gasoline tax from 19.4 to 70.1 cents per gallon has renewed interest in better understanding the implications of such a tax increase as well as the possible optimal rate of taxation. Few studies have examined aviation fuel elasticities and all have failed to study general aviation fuel elasticities. Chapter one fills that gap and examines the elasticity of aviation gasoline consumption in United States general aviation. Utilizing aggregate time series and dynamic panel data, the price and income elasticities of demand are estimated. The price elasticity of demand for aviation gasoline is estimated to range from -0.093 to -0.185 in the short-run and from -0.132 to -0.303 in the long-run. These results prove to be similar in magnitude to automobile gasoline elasticities and therefore tax policies could more closely mirror those of automobile tax policies. The second chapter examines the costs associated with general aviation accidents. Given the large number of general aviation operations as well as the large number of fatalities and

Analysis of United States' Broadband Policy

National Research Council Canada - National Science Library

Uzarski, Joel S

2007-01-01

.... With every month that passes, the United States fails to close the gap in the digital divide both inside its borders as well as among the other countries that lead the world in broadband penetration...

Visual Basic Growth-and-Yield Models With A Merchandising Optimizer For Planted Slash and Loblolly Pine in the West Gulf Region

Science.gov (United States)

R.L. Busby; S.J. Chang; P.R. Pasala; J.C.G. Goelz

2004-01-01

We developed two growth-and-yield models for thinned and unthinned plantations of slash pine (Pinus elliottii Engelm. var elliottii) and loblolly pine (P. taeda L.). The models, VB Merch-Slash and VB Merch-Lob, can be used to forecast product volumes and stand values for stands partitioned into 1-inch diameter-at...

Anti-Terrorism Authority Under the Laws of the United Kingdom and the United States

National Research Council Canada - National Science Library

Feikert, Clare; Doyle, Charles

2006-01-01

This is a comparison of the laws of the United Kingdom and of the United States that govern criminal and intelligence investigations of terrorist activities Both systems rely upon a series of statutory authorizations...

76 FR 38700 - United States, et al.

Science.gov (United States)

2011-07-01

... prices in advertisements, in-store displays, and online. Consumer World believes these rules should be... has ruled on that motion. I. Procedural History The United States and seven Plaintiff States filed the... Restraints result in higher merchant costs, and merchants generally pass costs on to consumers, retail prices...

75 FR 10561 - Pricing for 2010 United States Mint America the Beautiful QuartersTM

Science.gov (United States)

2010-03-08

... DEPARTMENT OF THE TREASURY United States Mint Pricing for 2010 United States Mint America the Beautiful Quarters\\TM\\ Two-Roll Set, etc. AGENCY: United States Mint, Department of the Treasury. ACTION: Notice. SUMMARY: The United States Mint is announcing the price of the 2010 United States Mint America...

78 FR 77103 - United States Travel and Tourism Advisory Board

Science.gov (United States)

2013-12-20

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism... extended deadline for application for membership on the United States Travel and Tourism Advisory Board... Travel and Tourism Advisory Board (Board). The November 25, 2013 notice provided that all applications...

Differential soil water sourcing of managed Loblolly Pine and Sweet Gum revealed by stable isotopes in the Upper Coastal Plain, USA

Science.gov (United States)

Brockman, L. E.; Younger, S. E.; Jackson, C. R.; McDonnell, J.; Janzen, K. F.

2017-12-01

Stable isotope signatures of stem water can illuminate where in the soil profile different types of trees are accessing soil water and thereby contribute to our understanding of water movement through the soil plant atmosphere continuum. The objective of this study was to use 2H and 18O isotopes to characterize water sources of fourteen-year-old intensively managed Loblolly Pine and Sweet Gum stands in replicated (n=3) paired plots. In order to differentiate the isotopic signatures of tree and soil water, both species and five soil depths were sampled monthly for one year. Tree sap and soil water were extracted cryogenically and their isotopic signatures were determined. Although plant water uptake is generally considered a non-fractionating process, our dataset suggests a source of fractionation in 2H signatures in both species and during most of the thirteen sampling events. As a result, only the 18O isotopic data were used to determine the vertical distribution of soil water contributions to stem water. Statistically, we grouped the five soil sampling depths into three isotopic horizons. Shallow, intermediate and deep soil represent sampling depths of 0-10cm, 30-70cm and 100-125cm, respectively. These isotopic horizons were used in a direct inference approach and Bayesian mixing model analysis to determine the origin of stem water. In this study, Loblolly Pine used more water from intermediate and deep soil while Sweet Gum used more water from shallow and intermediate soil. In the winter months, January through March, Loblolly Pine transpired primarily deep soil where as Sweet Gum mainly utilized shallow soil for transpiration. These results indicate that both species have opportunistic water use patterns with seasonal variation.

Energy and water balance of two contrasting loblolly pine plantations on the lower coastal plain of North Carolina, USA

Science.gov (United States)

G. Sun; A. Noormets; M.J. Gavazzi; S.G. McNulty; J. Chen; J.-C. King Domec; D.M. Amatya; R.W. Skaggs

2010-01-01

During 2005–2007, we used the eddy covariance and associated hydrometric methods to construct energy and water budgets along a chronosequence of loblolly pine (Pinus taeda) plantations that included a mid-rotation stand (LP) (i.e., 13–15 years old) and a recently established stand on a clearcut site (CC) (i.e., 4–6 years old) in Eastern...

78 FR 53426 - United States Travel and Tourism Advisory Board Charter Renewal

Science.gov (United States)

2013-08-29

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism... for the United States Travel and Tourism Advisory Board on August 19, 2013. DATES: The Charter for the United States Travel and Tourism Advisory Board was renewed on August 19, 2013. FOR FURTHER INFORMATION...

Detection of severe storm signatures in loblolly pine using seven-year periodic standardized averages and standard deviations

Science.gov (United States)

Stevenson Douglas; Thomas Hennessey; Thomas Lynch; Giulia Caterina; Rodolfo Mota; Robert Heineman; Randal Holeman; Dennis Wilson; Keith Anderson

2016-01-01

A loblolly pine plantation near Eagletown, Oklahoma was used to test standardized tree ring widths in detecting snow and ice storms. Widths of two rings immediately following suspected storms were standardized against widths of seven rings following the storm (Stan1 and Stan2). Values of Stan1 less than -0.900 predict a severe (usually ice) storm when Stan 2 is less...

Summary of Notifiable Diseases, United States. Volume 45, Number 53.

Science.gov (United States)

1997-10-31

Trichinosis Tuberculosis Typhoid fever Yellow fever NOTE: Although varicella is not a nationally notifiable disease, the Council of State and...plague among humans, two of which were fatal, were re- ported in the United States (two cases in Arizona, one in Colorado, and two in New Mexico ). Both...13 cases per year) were reported in the United States. Of these cases, 80% occurred in the southwestern states of New Mexico , Arizona, and

Forest carbon management in the United States: 1600-2100

Science.gov (United States)

Richard A. Birdsey; Kurt Pregitzer; Alan Lucier

2006-01-01

This paper reviews the effects of past forest management on carbon stocks in the United States, and the challenges for managing forest carbon resources in the 21st century. Forests in the United States were in approximate carbon balance with the atmosphere from 1600-1800. Utilization and land clearing caused a large pulse of forest carbon emissions during the 19th...

NCHS - Births and General Fertility Rates: United States

Data.gov (United States)

U.S. Department of Health & Human Services — This dataset includes crude birth rates and general fertility rates in the United States since 1909. The number of states in the reporting area differ historically....

VB merch-lob: A growth-and-yield prediction system with a merchandising optimizer for planted loblolly pine in the west Gulf region

Science.gov (United States)

S.J. Chang; Rodney L. Busby; P.R. Pasala; Daniel J. Leduc

2005-01-01

A Visual Basic computer model that can be used to estimate the harvestvalue of loblolly pine plantations in the west gulf region is presented. Themodel uses a dynamic programming algorithm to convert stand tablespredicted by COMPUTE_P-LOB into a listing of seven products thatmaximizes the harvested value of the stand.

Green electricity policies in the United States: case study

International Nuclear Information System (INIS)

Menz, Fredric C.

2005-01-01

While there has been interest in promoting the use of renewable energy in electricity production for a number of years in the United States, the market share of non-hydro renewable energy sources in electricity production has remained at about 2 percent over the past decade. The paper reviews the principal energy resources used for electricity production, considers the changing regulatory environment for the electricity industry, and describes government policies that have been used to promote green electricity in the United States, with an emphasis on measures adopted by state governments. Factors influencing the development of green power markets are also discussed, including underlying economic issues, public policy measures, the regulatory environment, external costs, and subsidies. Without significant increases in fossil fuel prices, much more stringent environmental regulations, or significant changes in electricity customer preferences, green electricity markets are likely to develop slowly in the United States

78 FR 70275 - United States Travel and Tourism Advisory Board

Science.gov (United States)

2013-11-25

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism... an opportunity to apply for membership on the United States Travel and Tourism Advisory Board... Travel and Tourism Advisory Board (Board). The purpose of the Board is to advise the Secretary of...

Veterinary Fusarioses within the United States

Science.gov (United States)

Multilocus DNA sequence data was used to retrospectively assess the genetic diversity and evolutionary relationships of 67 Fusarium strains from veterinary sources, most of which were from the United States. Molecular phylogenetic analyses revealed that the strains comprised 23 phylogenetically dist...

Low-level radioactive waste disposal technologies used outside the United States

International Nuclear Information System (INIS)

Templeton, K.J.; Mitchell, S.J.; Molton, P.M.; Leigh, I.W.

1994-01-01

Low-level radioactive waste (LLW) disposal technologies are an integral part of the waste management process. In the United States, commercial LLW disposal is the responsibility of the State or groups of States (compact regions). The United States defines LLW as all radioactive waste that is not classified as spent nuclear fuel, high- level radioactive waste, transuranic waste, or by-product material as defined in Section II(e)(2) of the Atomic Energy Act. LLW may contain some long-lived components in very low concentrations. Countries outside the United States, however, may define LLW differently and may use different disposal technologies. This paper outlines the LLW disposal technologies that are planned or being used in Canada, China, Finland, France, Germany, Japan, Sweden, Taiwan, and the United Kingdom (UK)

Pakistan: Can the United States Secure an Insecure State?

Science.gov (United States)

2010-01-01

do not have female staff; the male-to-female staff ratio in the health field is 7 to 1.130 More nurses and female staff are needed, especially to...exercise was rescheduled for 2009. 9 Interview with Ninth Air Force personnel, September 12, 2008. 200 Pakistan: Can the United States Secure an Insecure

The hydroelectric power market in the United States

International Nuclear Information System (INIS)

2002-01-01

The second-largest producer of hydroelectric power in the world is the United States, right after Canada. In the United States, 7.1 per cent of net electricity generation was attributed to hydroelectric power in 2000, which totalled 269 terawatt hours (TWh). Aging facilities, outdated technology in some facilities, a cumbersome licensing process, and increasing environmental demands from interest groups for the preservation of river systems and surrounding wildlife challenge the industry. Pacific Coast states, especially California, were faced with electric power shortages during the summer of 2001, due to low market prices, high power usage among consumers and drought. The problems with the deregulation of the electricity market were brought to light by these shortages. Legislation to restructure the electric power industry in 25 states had not been enacted as of January 2002. The purchase of more power from both Canada and the Mexico is being considered by the government of the United States, as is the creation of a national power grid to allow for power transmission throughout the country. The Canada-United States energy trade might be affected by such a move, and result in project construction opportunities for Canadian companies. Renewable energy sources must be responsible for the generation of 10 per cent of power generation levels by 2020, on a gradual basis as mandated by law. By 2005, New York City must purchase 10 per cent of its power from renewable energy sources, reaching 20 per cent by 2010. The repair and replacement of aging dam equipment, the development of advanced turbine technology to protect fish stocks and water quality, dam removal, the construction of power lines are all opportunities open to Canadian companies. 60 refs., 5 tabs

The effects of decreased water availability on loblolly pine (Pinus taeda L.) productivity and the interaction between fertilizer and drought

Science.gov (United States)

Adam O. Maggard; Rodney E. Will; Duncan S. Wilson; Cassandra R. Meek

2016-01-01

As part of the regional PINEMAP (Pine Integrated Network: Education, Mitigation, and Adaptation project) funded by the NIFA - USDA, we established a factorial study in McCurtain County, OK near Broken Bow. This study examined the effects of fertilization and ~30 percent reduction in throughfall on an seven-yearold loblolly pine (Pinus taeda L.) plantation. The...

Research and photovoltaic industry at the United States

International Nuclear Information System (INIS)

Lerouge, Ch.; Herino, R.; Delville, R.; Allegre, R.

2006-06-01

For a big country as the United States, the solar energy can be a solution for the air quality improvement, the greenhouse gases fight and the reduction of the dependence to the imported petroleum and also for the economic growth by the increase of the employment in the solar industry sector. This document takes stock on the photovoltaic in the United States in the industrial and research domains. The american photovoltaic industry is the third behind the Japan and the Germany. (A.L.B.)

State cigarette minimum price laws - United States, 2009.

Science.gov (United States)

2010-04-09

Cigarette price increases reduce the demand for cigarettes and thereby reduce smoking prevalence, cigarette consumption, and youth initiation of smoking. Excise tax increases are the most effective government intervention to increase the price of cigarettes, but cigarette manufacturers use trade discounts, coupons, and other promotions to counteract the effects of these tax increases and appeal to price-sensitive smokers. State cigarette minimum price laws, initiated by states in the 1940s and 1950s to protect tobacco retailers from predatory business practices, typically require a minimum percentage markup to be added to the wholesale and/or retail price. If a statute prohibits trade discounts from the minimum price calculation, these laws have the potential to counteract discounting by cigarette manufacturers. To assess the status of cigarette minimum price laws in the United States, CDC surveyed state statutes and identified those states with minimum price laws in effect as of December 31, 2009. This report summarizes the results of that survey, which determined that 25 states had minimum price laws for cigarettes (median wholesale markup: 4.00%; median retail markup: 8.00%), and seven of those states also expressly prohibited the use of trade discounts in the minimum retail price calculation. Minimum price laws can help prevent trade discounting from eroding the positive effects of state excise tax increases and higher cigarette prices on public health.

75 FR 78338 - Meeting of the United States-Oman Joint Forum on Environmental Cooperation Pursuant to the United...

Science.gov (United States)

2010-12-15

... DEPARTMENT OF STATE [Public Notice 7261] Meeting of the United States-Oman Joint Forum on Environmental Cooperation Pursuant to the United States-Oman Memorandum of Understanding on Environmental Cooperation ACTION: Notice of the meeting of the U.S.-Oman Joint Forum on Environmental Cooperation and...

77 FR 27669 - Modifications to Definition of United States Property

Science.gov (United States)

2012-05-11

... contracts. The temporary regulations provide that certain obligations of United States persons arising from upfront payments made by controlled foreign corporations pursuant to contracts that are cleared by a... the meaning of section 956(c)) for obligations of United States persons arising from certain upfront...

Contemporary United States Foreign Policy Towards Indonesia

National Research Council Canada - National Science Library

McAslan, Hugh

2004-01-01

United States national interests in Indonesia have traditionally being based on strategic security requirements given Indonesia's geographic location between the Indian and Pacific Oceans, and strong...

Loblolly pine grown under elevated CO2 affects early instar pine sawfly performance.

Science.gov (United States)

Williams, R S; Lincoln, D E; Thomas, R B

1994-06-01

Seedlings of loblolly pine Pinus taeda (L.), were grown in open-topped field chambers under three CO 2 regimes: ambient, 150 μl l -1 CO 2 above ambient, and 300 μl l -1 CO 2 above ambient. A fourth, non-chambered ambient treatment was included to assess chamber effects. Needles were used in 96 h feeding trials to determine the performance of young, second instar larvae of loblolly pine's principal leaf herbivore, red-headed pine sawfly, Neodiprion lecontei (Fitch). The relative consumption rate of larvae significantly increased on plants grown under elevated CO 2 , and needles grown in the highest CO 2 regime were consumed 21% more rapidly than needles grown in ambient CO 2 . Both the significant decline in leaf nitrogen content and the substantial increase in leaf starch content contributed to a significant increase in the starch:nitrogen ratio in plants grown in elevated CO 2 . Insect consumption rate was negatively related to leaf nitrogen content and positively related to the starch:nitrogen ratio. Of the four volatile leaf monoterpenes measured, only β-pinene exhibited a significant CO 2 effect and declined in plants grown in elevated CO 2 . Although consumption changed, the relative growth rates of larvae were not different among CO 2 treatments. Despite lower nitrogen consumption rates by larvae feeding on the plants grown in elevated CO 2 , nitrogen accumulation rates were the same for all treatments due to a significant increase in nitrogen utilization efficiency. The ability of this insect to respond at an early, potentially susceptible larval stage to poorer food quality and declining levels of a leaf monoterpene suggest that changes in needle quality within pines in future elevated-CO 2 atmospheres may not especially affect young insects and that tree-feeding sawflies may respond in a manner similar to herb-feeding lepidopterans.

Employers mexican migrants in the United States

Directory of Open Access Journals (Sweden)

Eduardo Fernández Guzmán

2013-09-01

Full Text Available You might think that by definition the migrant labor plays in less profitable niches and meager social mobility. However, a large group of migrants in different economically developed countries have successfully launched businesses of diverse nature and volume. This is why entrepreneurship of migrants is an issue that has received increasing attention in recent years. Compared to other immigrant groups in the United States, Mexicans show low levels of entrepreneurial activity. The aim of this paper is to, through a general literature review of official statistical data, a preliminary analysis of mexican migrant entrepreneurship in the United States, that is to say in recent years has been growing in importance.

Bird Diversity and Composition in Even-Aged Loblolly Pine Stands Relative to Emergence of 13-year Periodical Cicadas and Vegetation Structure

Science.gov (United States)

Jennifer L. Hestir; Michael D. Cain

1999-01-01

In southern Arkansas, l3-year periodical cicadas (Magicicada spp.) were expected to emerge in late April and early May of 1998. Presence of a superabundant food source, such as periodical cicadas, may attract greater numbers of birds and more species of birds than is usually present in a particular area. Three even-aged loblolly pine (Pinus...

Initial mortality rates and extent of damage to loblolly and longleaf pine plantations affected by an ice storm in South Carolina

Science.gov (United States)

Don C. Bragg

2016-01-01

A major ice storm struck Georgia and the Carolinas in February of 2014, damaging or destroying hundreds of thousands of hectares of timber worth hundreds of millions of dollars. Losses were particularly severe in pine plantations in west-central South Carolina, including many on the Savannah River Site (SRS). An array of paired, mid-rotation loblolly (Pinus...

Motorcycle trends in the United States

Science.gov (United States)

2009-05-01

During the last decade there has been a significant increase in the number of motorcycle sales and registrations in the United States. At the same time there has been a shift in the demographics of motorcycle users and increased focus on motorcycle s...

THE UNITED STATES AND NIGERIAN RELATIONS:

African Journals Online (AJOL)

Mrs. I.D

2009-12-25

Dec 25, 2009 ... response from the Nigerian government. ... domestic crises that negatively impacts state stability, the US government ... Harrison C. Ajebon, Department of Political Science, University of Calabar, ..... Sweden. United Kingdom. Switzerland. Asia & far East. Japan ..... case Study of Nigeria, in Ikonnechidi and.

37 CFR 1.416 - The United States International Preliminary Examining Authority.

Science.gov (United States)

2010-07-01

... STATES PATENT AND TRADEMARK OFFICE, DEPARTMENT OF COMMERCE GENERAL RULES OF PRACTICE IN PATENT CASES International Processing Provisions General Information § 1.416 The United States International Preliminary... 37 Patents, Trademarks, and Copyrights 1 2010-07-01 2010-07-01 false The United States...

31 CFR Appendix C to Subpart C of... - United States Customs Service

Science.gov (United States)

2010-07-01

... 31 Money and Finance: Treasury 1 2010-07-01 2010-07-01 false United States Customs Service C... Customs Service 1. In general. This appendix applies to the United States Customs Service. It sets forth... records and accounting of disclosures. (a) For records which are maintained at the United States Customs...

The State of Homeless Children in the United States

Science.gov (United States)

Kabler, Brenda; Weinstein, Elana

2009-01-01

Across America, the numbers of homeless children and families are growing as a result of many factors including the recent economic crisis, home foreclosures, and natural disasters. Because of an increase in the number of homeless children throughout the United States, this population has unmet needs that can be targeted in school settings under…

78 FR 53478 - Proposed Information Collection; United States Park Police Personal History Statement

Science.gov (United States)

2013-08-29

...] Proposed Information Collection; United States Park Police Personal History Statement AGENCY: National Park... about this IC, contact Major Scott Fear, United States Park Police, 1100 Ohio Drive SW., Washington, DC... INFORMATION: I. Abstract The United States Park Police (USPP) is a unit of the National Park Service...

44 CFR 351.26 - The United States Department of Agriculture.

Science.gov (United States)

2010-10-01

... 44 Emergency Management and Assistance 1 2010-10-01 2010-10-01 false The United States Department of Agriculture. 351.26 Section 351.26 Emergency Management and Assistance FEDERAL EMERGENCY... PREPAREDNESS Interagency Assignments § 351.26 The United States Department of Agriculture. (a) Assist FEMA in...

Branch growth and gas exchange in 13-year-old loblolly pine (Pinus taeda) trees in response to elevated carbon dioxide concentration and fertilization

Science.gov (United States)

Chris A. Maier; Kurt H. Johnsen; John Butnor; Lance W. Kress; Peter H. Anderson

2002-01-01

Summary We used whole-tree, open-top chambers to expose 13-year-old loblolly pine (Pinus taeda L.) trees, growing in soil with high or low nutrient availability, to either ambient or elevated (ambient + 200 µmol mol-1 ) carbon dioxide concentration ([CO2]) for 28 months. Branch growth...

Fragmented patterns of flood change across the United States

Science.gov (United States)

Archfield, Stacey A.; Hirsch, Robert M.; Viglione, A.; Blöschl, G.

2016-01-01

Trends in the peak magnitude, frequency, duration, and volume of frequent floods (floods occurring at an average of two events per year relative to a base period) across the United States show large changes; however, few trends are found to be statistically significant. The multidimensional behavior of flood change across the United States can be described by four distinct groups, with streamgages experiencing (1) minimal change, (2) increasing frequency, (3) decreasing frequency, or (4) increases in all flood properties. Yet group membership shows only weak geographic cohesion. Lack of geographic cohesion is further demonstrated by weak correlations between the temporal patterns of flood change and large-scale climate indices. These findings reveal a complex, fragmented pattern of flood change that, therefore, clouds the ability to make meaningful generalizations about flood change across the United States.

Media Education in the United States: A Check under the "Gestalt" Hood.

Science.gov (United States)

Phillips, Melissa

1998-01-01

Examines four commonalities of media education in the United States. Outlines the four ideological perspectives that in fact guide media education in the United States: celebration, protectionism, cultural criticism, and educated consumerism. Suggests what all of this means for the future of media education in the United States and what will be…

7 CFR 58.2825 - United States Standard for ice cream.

Science.gov (United States)

2010-01-01

... AND STANDARDS UNDER THE AGRICULTURAL MARKETING ACT OF 1946 AND THE EGG PRODUCTS INSPECTION ACT... DAIRY PRODUCTS 1 United States Department of Agriculture Standard for Ice Cream § 58.2825 United States... from the use of bulky optional ingredients, chocolate and cocoa solids used shall be considered the...

22 CFR 61.8 - Coordination with United States Customs Service.

Science.gov (United States)

2010-04-01

... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Coordination with United States Customs Service... FREE FLOW OF AUDIO-VISUAL MATERIALS § 61.8 Coordination with United States Customs Service. (a) Nothing in this part shall preclude examination of imported materials pursuant to the Customs laws and...

49 CFR 24.208 - Aliens not lawfully present in the United States.

Science.gov (United States)

2010-10-01

... 49 Transportation 1 2010-10-01 2010-10-01 false Aliens not lawfully present in the United States... Requirements § 24.208 Aliens not lawfully present in the United States. (a) Each person seeking relocation... of an individual, that he or she is either a citizen or national of the United States, or an alien...

Simulating the effects of site index variation within loblolly pine plantations using an individual tree growth and yield model

Science.gov (United States)

Ralph L. Amateis; Harold E. Burkhart

2016-01-01

Site index is the most common metric of site productivity in loblolly pine plantations. Generally applied as a constant for a particular stand, it provides an overall measure of a site’s ability to grow trees. It is well known, however, that even the most uniform stands can have considerable variation in site index due to soil factors that influence microsite,...

Environmental performance reviews: United States

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-01-15

This book presents OECD assessments and recommendations regarding the United States' effort to manage its environment including air, water nature, and biodiversity to do this in a sustainable manner; and to do this in co-operation with its global neighbours. In particular, it assesses progress made since 1996, when OECD's previous review on the US was done. 40 figs., 21 tabs.

Consumer bankruptcy law for Ethiopia: Lessons from United States ...

African Journals Online (AJOL)

After deregulation of consumer credit and resultant availability, ... Germany, United States, United Kingdom and France are some of the countries ... social insurance, development policy and rehabilitative function of discharge and fresh start.

United States - Japanese nuclear relations: implications for the pacific region

International Nuclear Information System (INIS)

Suttmeier, R.P.

1980-01-01

The initiation of a new approach to non-proliferation policy by the United States in 1977 was the most upsetting development in the history of US-Japanese nuclear relations. The policy has seemingly altered Japanese views of its own nuclear future very little, yet it has altered the tone of the nuclear relationship with the United States. Recent Japanese nuclear power developments, both technical and administrative, are outlined and the prospects for the future of the United States-Japanese nuclear relationship and for Pacific regional cooperation assessed. Issues of importance in the relationship include reprocessing - enrichment, plutonium management, spent fuel and waste management and uranium supplies

46 CFR 153.12 - IMO Certificates for United States Ships.

Science.gov (United States)

2010-10-01

... 8, or the Officer in Charge, Marine Inspection, issues a United States ship an IMO Certificate... 46 Shipping 5 2010-10-01 2010-10-01 false IMO Certificates for United States Ships. 153.12 Section... CARGOES SHIPS CARRYING BULK LIQUID, LIQUEFIED GAS, OR COMPRESSED GAS HAZARDOUS MATERIALS General § 153.12...

China’s international trade and air pollution in the United States

Science.gov (United States)

Lin, Jintai; Pan, Da; Davis, Steven J.; Zhang, Qiang; He, Kebin; Wang, Can; Streets, David G.; Wuebbles, Donald J.; Guan, Dabo

2014-01-01

China is the world’s largest emitter of anthropogenic air pollutants, and measurable amounts of Chinese pollution are transported via the atmosphere to other countries, including the United States. However, a large fraction of Chinese emissions is due to manufacture of goods for foreign consumption. Here, we analyze the impacts of trade-related Chinese air pollutant emissions on the global atmospheric environment, linking an economic-emission analysis and atmospheric chemical transport modeling. We find that in 2006, 36% of anthropogenic sulfur dioxide, 27% of nitrogen oxides, 22% of carbon monoxide, and 17% of black carbon emitted in China were associated with production of goods for export. For each of these pollutants, about 21% of export-related Chinese emissions were attributed to China-to-US export. Atmospheric modeling shows that transport of the export-related Chinese pollution contributed 3–10% of annual mean surface sulfate concentrations and 0.5–1.5% of ozone over the western United States in 2006. This Chinese pollution also resulted in one extra day or more of noncompliance with the US ozone standard in 2006 over the Los Angeles area and many regions in the eastern United States. On a daily basis, the export-related Chinese pollution contributed, at a maximum, 12–24% of sulfate concentrations over the western United States. As the United States outsourced manufacturing to China, sulfate pollution in 2006 increased in the western United States but decreased in the eastern United States, reflecting the competing effect between enhanced transport of Chinese pollution and reduced US emissions. Our findings are relevant to international efforts to reduce transboundary air pollution. PMID:24449863

Evapotranspiration of a Mid-Rotation Loblolly Pine Plantation and a Recently Harvested Stands on the Coastal Plain of North Carolina, U.S.A.

Science.gov (United States)

W. Cao; Ge Sun; Steve G. McNulty; J. Chen; A. Noormets; R. W. Skaggs; Devendra M. Amatya

2006-01-01

Evapotranspiration (ET) is the primary component of the forest hydrologic cycle, which includes plant transpiration, canopy rainfall interception, and soil evaporation. Quantifying ET processes and potential biophysical regulations is needed for assessing forest water management options. Loblolly pines are widely planted in the coastal plain of the Southeastern US, but...

The United States and world energy markets

International Nuclear Information System (INIS)

Ramsay, W.C.

1992-01-01

The United States, dominating the world's energy markets as a producer and consumer, is sensitive to changes in this market and intends to influence the development of global energy policy. Supply will be increased by nations such as Venezuela, Indonesia and perhaps in the future a United Yemen and the Commonwealth of Independent States, moving to freer market economies which will allow investment opportunities previously inaccessible to foreign companies. Although world energy demand will grow, little of this will be in the US where, under the National Energy Strategy, comprehensive measures are being introduced to improve energy efficiency. The US energy security will be further improved by such measures as diversification of supply, larger domestic production and increasing interdependence between suppliers, traders and consumers. (author)

The financial burden of out-of-pocket expenses in the United States and Canada: How different is the United States?

Directory of Open Access Journals (Sweden)

Katherine E Baird

2016-01-01

Full Text Available Background: This article compares the burden that medical cost-sharing requirements place on households in the United States and Canada. It estimates the probability that individuals with similar demographic features in the two countries have large medical expenses relative to income. Method: The study uses 2010 nationally representative household survey data harmonized for cross-national comparisons to identify individuals with high medical expenses relative to income. Using logistic regression, it estimates the probability of high expenses occurring among 10 different demographic groups in the two countries. Results: The results show the risk of large medical expenses in the United States is 1.5–4 times higher than it is in Canada, depending on the demographic group and spending threshold used. The United States compares least favorably when evaluating poorer citizens and when using a higher spending threshold. Conclusion: Recent health care reforms can be expected to reduce Americans’ catastrophic health expenses, but it will take very large reductions in out-of-pocket expenditures—larger than can be expected—if poorer and middle-class families are to have the financial protection from high health care costs that their counterparts in Canada have.

GEOPOLITICS AND TRANSPORTATION. UNITED STATES AND PANAMA CANAL

Directory of Open Access Journals (Sweden)

Benea Ciprian Beniamin

2009-05-01

Full Text Available This article presents the great connection which exists between the realization of Panama Canal and the rising power on United States; and how this state, after the construction of this canal, could promote efficiently at global level its interests.

Improving the United States' Strategic Communication Strategy

National Research Council Canada - National Science Library

Risberg, Robert H

2008-01-01

...? Much of the answer to this question is the failure of the United States Government to effectively use strategic communication to inform and influence populations to recognize the value of American...

Nickel recycling in the United States in 2004

Science.gov (United States)

Goonan, Thomas G.

2009-01-01

As one of a series of reports that describe the recycling of metal commodities in the United States, this report discusses the flow of nickel from production through distribution and use, with particular emphasis on the recycling of industrial scrap (new scrap) and used products (old scrap) in 2004. This materials flow study includes a description of nickel supply and demand for the United States to illustrate the extent of nickel recycling and to identify recycling trends. Understanding how materials flow from a source through disposition can aid in improving the management of natural resource delivery systems. In 2004, the old scrap recycling efficiency for nickel was estimated to be 56.2 percent. In 2004, nickel scrap consumption in the United States was as follows: new scrap containing 13,000 metric tons (t) of nickel (produced during the manufacture of products), 12 percent; and old scrap containing 95,000 t of nickel (articles discarded after serving a useful purpose), 88 percent. The recycling rate for nickel in 2004 was 40.9 percent, and the percentage of nickel in products attributed to nickel recovered from nickel-containing scrap was 51.6 percent. Furthermore, U.S. nickel scrap theoretically generated in 2004 had the following distribution: scrap to landfills, 24 percent; recovered and used scrap, 50 percent; and unaccounted for scrap, 26 percent. Of the 50 percent of old scrap generated in the United States that was recovered and then used in 2004, about one-third was exported and two-thirds was consumed in the domestic production of nickel-containing products.

School Autonomy: A Comparison between China and the United States

Science.gov (United States)

Xia, Jiangang; Gao, Xingyuan; Shen, Jianping

2017-01-01

This study examined and compared school autonomy in China and the United States. Based on the international PISA 2012 school data, the authors examined three aspects of school autonomy. We found that in comparison with the United States, (1) principals from China were less likely to have responsibility over eleven school decisions (hiring…

6 CFR 13.45 - Deposit in Treasury of United States.

Science.gov (United States)

2010-01-01

... 6 Domestic Security 1 2010-01-01 2010-01-01 false Deposit in Treasury of United States. 13.45 Section 13.45 Domestic Security DEPARTMENT OF HOMELAND SECURITY, OFFICE OF THE SECRETARY PROGRAM FRAUD CIVIL REMEDIES § 13.45 Deposit in Treasury of United States. All amounts collected pursuant to this part...

14 CFR 47.7 - United States citizens and resident aliens.

Science.gov (United States)

2010-01-01

... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false United States citizens and resident aliens... AIRCRAFT AIRCRAFT REGISTRATION General § 47.7 United States citizens and resident aliens. (a) U.S. citizens... the application. (b) Resident aliens. An applicant for aircraft registration under 49 U.S.C. 44102 who...

Promoting "Academic Entrepreneurship" in Europe and the United States

DEFF Research Database (Denmark)

Tvarnø, Christina D.; Bagley, Constance E.

2016-01-01

and business thereby contributing to the development of the knowledge based economy.” As the European Commission has recognized, the European Union (“EU”) needs to take action to “unlock the potential of IPRs [intellectual property rights] that lie dormant in universities, research institutes and companies...... States (“U.S.”). Our comparative analysis of the EU and U.S. approaches to translational medicine shows that there are lessons to be shared. The EU can apply the experiences from the U.S. Bayh-Dole Act and PPPPs in the United States, and the United States can emulate certain of the open innovation...

The Energy Puzzle Between the United States and China

Science.gov (United States)

2013-03-01

securing China’s status as a great power.2 As of 2011, China is the second largest consumer of natural resources (oil, liquefied petroleum gas ( LPG ...pursuit of natural resources, (oil, natural gas , coal or renewable energy sources) is reshaping the world’s energy security. The United States is...pursuit of natural resources, (oil, natural gas , coal or renewable energy sources) is reshaping the world’s energy security. The United States is

Assisted Reproductive Technology Surveillance - United States, 2015.

Science.gov (United States)

Sunderam, Saswati; Kissin, Dmitry M; Crawford, Sara B; Folger, Suzanne G; Boulet, Sheree L; Warner, Lee; Barfield, Wanda D

2018-02-16

Since the first U.S. infant conceived with assisted reproductive technology (ART) was born in 1981, both the use of ART and the number of fertility clinics providing ART services have increased steadily in the United States. ART includes fertility treatments in which eggs or embryos are handled in the laboratory (i.e., in vitro fertilization [IVF] and related procedures). Although the majority of infants conceived through ART are singletons, women who undergo ART procedures are more likely than women who conceive naturally to deliver multiple-birth infants. Multiple births pose substantial risks for both mothers and infants, including obstetric complications, preterm delivery (state-specific information for the United States (including the District of Columbia and Puerto Rico) on ART procedures performed in 2015 and compares birth outcomes that occurred in 2015 (resulting from ART procedures performed in 2014 and 2015) with outcomes for all infants born in the United States in 2015. 2015. In 1995, CDC began collecting data on ART procedures performed in fertility clinics in the United States as mandated by the Fertility Clinic Success Rate and Certification Act of 1992 (FCSRCA) (Public Law 102-493 [October 24, 1992]). Data are collected through the National ART Surveillance System, a web-based data collection system developed by CDC. This report includes data from 52 reporting areas (the 50 states, the District of Columbia, and Puerto Rico). In 2015, a total of 182,111 ART procedures (range: 135 in Alaska to 23,198 in California) with the intent to transfer at least one embryo were performed in 464 U.S. fertility clinics and reported to CDC. These procedures resulted in 59,334 live-birth deliveries (range: 55 in Wyoming to 7,802 in California) and 71,152 infants born (range: 68 in Wyoming to 9,176 in California). Nationally, the number of ART procedures performed per 1 million women of reproductive age (15-44 years), a proxy measure of the ART utilization rate, was

Chapter 16. Conservation status of great gray owls in the United States

Science.gov (United States)

Gregory D. Hayward

1994-01-01

Previous chapters outlined the biology and ecology of great gray owls as well as the ecology of this species in the western United States. That technical review provides the basis to assess the current conservation status of great gray owls in the United States. Are populations of great gray owls in the United States currently threatened? Are current land management...

Regulations for radiochemical facilities in the United States

International Nuclear Information System (INIS)

Emeigh, Ch; Smith, B.; Williams, T

1999-01-01

Material control and accounting is implemented to provide assurance that physical protection measures have been effective, and in case they fail, to provide delayed detection of the loss. Regulations in the United States have been developed that include both performance and compliance requirements to provide a defence in depth approach addressing the unique characteristics of each facility. Regulations address administrative controls, material control and material accounting. Nuclear materials control and accounting plans are negotiated between regulatory agencies and facilities to develop a site-specific approach. An overview of the regulations and their implementation in the United State is provided [ru

Platinum recycling in the United States in 1998

Science.gov (United States)

Hilliard, Henry E.

2001-01-01

In the United States, catalytic converters are the major source of secondary platinum for recycling. Other sources of platinum scrap include reforming and chemical process catalysts. The glass industry is a small but significant source of platinum scrap. In North America, it has been estimated that in 1998 more than 20,000 kilograms per year of platinum-group metals from automobile catalysts were available for recycling. In 1998, an estimated 7,690 kilograms of platinum were recycled in the United States. U.S. recycling efficiency was calculated to have been 76 percent in 1998; the recycling rate was estimated at 16 percent.

The independent nuclear state. The United States, Britain and the military atom

International Nuclear Information System (INIS)

Simpson, J.

1983-01-01

A chronological account and overview are presented of the 40-year history of British military research, development and production work in atomic energy. The United Kingdom's efforts in this field have always had close links with equivalent activities in the United States, and have often been conducted on a mutually co-operative basis. This book contains descriptions of the technical evolution of British nuclear weapon designs and production models, estimates of annual output figures for fissile material and weapon types, and indications of the nature of the weapon-testing programme. Decision-points are charted. The impact of the agreements with the United States, both upon weapon development and production programmes and upon stockpiling, is analysed, as well as their effects upon the nuclear submarine programme. The impact of later events upon Anglo-American relations is identified, together with the recent British attempts to move to a closer political association with Europe. The study concludes by evaluating the essential nature of four decades of United Kingdom military nuclear development, and identifying the practical limits imposed by past policies upon any attempt by a British government to implement a policy of unilateral nuclear disarmament. (author)

Income Distribution Policy in the United States [and] Discussion Paper.

Science.gov (United States)

Okner, Benjamin A.; Rivlin, Alice M.

The focus of this paper is inequality - primarily, income - inequality - in the United States and the historical-political context in which policies that affect inequality are being discussed. The first section gives a brief description of recent trends in the distribution of income in the United States, a picture whose most remarkable feature is…

IAEA Completes Nuclear Security Review Mission in United States

International Nuclear Information System (INIS)

2013-01-01

Full text: A team of nuclear security experts led by the International Atomic Energy Agency (IAEA) today completed a mission to review nuclear security practices of civil nuclear facilities licensed by the United States Nuclear Regulatory Commission (NRC). Conducted at the U.S. Government's request, the two-week International Physical Protection Advisory Service (IPPAS) mission reviewed the United States' nuclear security-related legislative and regulatory framework. As part of this work, the IPPAS team, led by John O'Dacre of Canada and comprising nine experts from eight IAEA Member States, met with NRC officials and reviewed the physical protection systems at the Center for Neutron Research (NCNR) at the National Institute of Standards and Technology. The IPPAS team concluded that nuclear security within the U.S. civil nuclear sector is robust and sustainable and has been significantly enhanced in recent years. The team identified a number of good practices in the nation's nuclear security regime and at the NCNR. The IPPAS team also made a recommendation and some suggestions for the continuing improvement of nuclear security overall. The mission in the United States was the 60th IPPAS mission organized by the IAEA. 'Independent international peer reviews such as IAEA IPPAS missions are increasingly being recognized for their value as a key component for exchanges of views and advice on nuclear security measures', said Khammar Mrabit, Director of the IAEA Office of Nuclear Security. 'The good practices identified during this mission will contribute to the continuous improvements of nuclear security in other Member States'. The IPPAS team provided a draft report to the NRC and will submit a final report soon. Because it contains security-related information about a specific nuclear site, IPPAS reports are not made public. 'The IPPAS programme gives us a chance to learn from the experience and perspective of our international partners', said NRC Chairman Allison M

2009 United States Automatic Identification System Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The 2009 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is...

2014 United States Automatic Identification System Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The 2014 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is...

2012 United States Automatic Identification System Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The 2012 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is...

2010 United States Automatic Identification System Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The 2010 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is...

2011 United States Automatic Identification System Database

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The 2011 United States Automatic Identification System Database contains vessel traffic data for planning purposes within the U.S. coastal waters. The database is...

United Kingdom and United States Tourism Demand for Malaysia:A Cointegration Analysis

OpenAIRE

Habibi, Fateh; Abdul Rahim, Khalid; Chin, Lee

2008-01-01

Tourism industry has been an important contributor to the Malaysia economy. In this paper we inspect variations in the long run demand for tourism from United Kingdom and United States to Malaysia. The demand for tourism has been explained by macroeconomic variables, including income in origin countries, tourism prices in Malaysia, and travel cost between the two countries. Annual data from 1972 to 2006 are used for the analysis. Augmented Dickey-Fuller and Johansen’s maximum likelihood tests...

Seasonal trends of light-saturated net photosynthesis and stomatal conductance of loblolly pine trees grown in contrasting environments of nutrition, water and carbon dioxide

Science.gov (United States)

Ramesh Murthy; Stanley J. Zarnoch; P.M. Dougherty

1997-01-01

Repeated measures analysis was used to evaluate the effect of long-term CO2 enhancement on seasonal trends of light-saturated rates of net photosynthesis (Asat) and stomatal conductance to water vapour (gsat) of 9-year-old loblolly pine (Pinus taeda L.; trees grown in a 2x2...

Status of nuclear engineering education in the United States

International Nuclear Information System (INIS)

Brown, G.J.

2000-01-01

Nuclear engineering education in the United States is reflective of the perceived health of the nuclear electric power industry within the country. Just as new commercial reactor orders have vanished and some power plants have shut down, so too have university enrollments shrunk and research reactors closed. This decline in nuclear trained specialists and the disappearance of the nuclear infrastructure is a trend that must be arrested and reversed if the United States is to have a workforce capable of caring for a nuclear power industry to not only meet future electric demand but to ensure that the over 100 existing plants, their supporting facilities and their legacy in the form of high level waste and facility clean-up are addressed. Additionally, the United States has an obligation to support and maintain its nuclear navy and other defence needs. And, lastly, if the United States is to have a meaningful role in the international use of nuclear power with regard to safety, non-proliferation and the environment, then it is imperative that the country continues to produce world-class nuclear engineers and scientists by supporting nuclear engineering education at its universities. The continued support of the federal government. and industry for university nuclear engineering and nuclear energy research and development is essential to sustain the nuclear infrastructure in the United States. Even with this support, and the continued excellent operation of the existing fleet of nuclear electric power plants, it is conceivable that nuclear engineering as an academic discipline may fall victim to poor communications and a tarnished public image. What is needed is a combination of federal and industrial support along with the creativity of the universities to expand their offerings to include more than power production. The objective is a positive message on careers in nuclear related fields, and recognition of the important role of nuclear energy in meeting the country

Aerosol container-related eye injuries in the United States: 1997-2009.

Science.gov (United States)

Seidman, Carly J; Linakis, James G; Mello, Michael J; Greenberg, Paul B

2011-06-01

To quantify and characterize eye injuries related to aerosol container consumer products treated in United States hospital emergency departments (EDs) from 1997 through 2009. Retrospective study. Descriptive analysis of aerosol container-related eye injury data derived from the National Electronic Injury Surveillance System, a stratified probability sample of hospital-affiliated United States EDs. Data collected included demographic variables (gender and age), locale, diagnoses, and hospital disposition associated with aerosol container-related eye injuries treated in United States EDs from 1997 through 2009. Products associated with injury and mechanisms of injury also were extracted and analyzed. There were an estimated 10 765 (95% confidence interval [CI], 9842 to 11 688) visits to United States EDs for aerosol container-related eye injuries during the study period; 6756 (95% CI, 5771 to 7742; 63%) patients were male; 5927 (95% CI, 4956 to 6897; 55%) injuries occurred in children (age container-related eye injuries in the United States occur in men and children and that self-inflicted spray to the eye is the most common mechanism of injury. Further research is needed to devise effective prevention strategies for these types of injuries. Published by Elsevier Inc.

Critical Concerns for Oral Communication Education in the United States and the United Kingdom

Science.gov (United States)

Emanuel, Richard

2011-01-01

An examination of oral communication education in the United States (U.S.) and United Kingdom (U.K.) identified four critical concerns: (1) Today's college students are not getting adequate oral communication education; (2) Oral communication education is being relegated to a "module" in another discipline-specific course; (3) When an…

Forest management and water in the United States [Chapter 13

Science.gov (United States)

Daniel G. Neary

2017-01-01

This chapter outlines a brief history of the United States native forests and forest plantations. It describes the past and current natural and plantation forest distribution (map, area, main species), as well as main products produced (timber, pulp, furniture, etc.). Integrated into this discussion is a characterization of the water resources of the United States and...

Continental integration and energy demand in the United States

International Nuclear Information System (INIS)

Manning, D.J.

2004-01-01

This presentation highlighted some of the major issues regarding energy demand in the United States and continental integration. The energy markets in Canada and the United States are economically integrated with large cross-border investment. Therefore, the energy infrastructure can be significantly affected by inconsistencies between the two countries in policy, regulatory processes and fiscal regimes. The author discussed the inelasticity in the natural gas demand in the United States in the near-term, and how natural gas consumption, particularly for power generation, is greater than North America's supply capacity. New supplies such as liquefied natural gas and arctic gas are needed to meet growing demands. The role of renewable energy technologies and energy efficiency was also discussed. It was emphasized that imbalances in supply and demand inevitably lead to price volatility and that high prices are a major obstacle to economic growth. tabs., figs

Radioactive waste management in the United States

International Nuclear Information System (INIS)

Smiley, J.L.

1985-01-01

In the United States, efforts to dispose of the nation's high- and low-level radioactive wastes are based on somewhat different approaches.The individual States are responsible for disposing of low-level wastes with the Federal Government providing technical and financial support to help the States in the early phases of their efforts. The Federal Government has responsibility for developing facilities for the disposal of high-level waste. However, both efforts show a common need to meet national objectives while satisfying the concerns of the public. (author)

The United States and Europe: Current Issues

National Research Council Canada - National Science Library

Archick, Kristin; Morelli, Vince L

2006-01-01

The United States and Europe share a long and intertwined history. Both sides of the Atlantic face a common set of international concerns, have few other comparable partners, and share a deep economic relationship...

Policies Supporting Local Food in the United States

Directory of Open Access Journals (Sweden)

Steve W. Martinez

2016-08-01

Full Text Available Local food has been the subject of federal, state, and local government policies in recent years throughout the United States as consumer demand has grown. Local foods have been linked to several government priorities—including enhancing the rural economy, the environment, and supporting agricultural producers. This article provides an overview of U.S. Federal, State and regional policies designed to support local food systems. It details the latest economic information on policy, relying on findings from several national surveys and a synthesis of recent literature. Federal policies related to local food systems were greatly expanded by the 2008 Farm Bill, and are further expanded in the Agricultural Act of 2014. United States policies address several barriers to the further expansion of local food markets, including scaling up output of small farms to address the needs of larger commercial outlets, lack of infrastructure for increasing local food sales, ability to trace product source, and producer education regarding local food expansion.

Dengue Fever in the United States

Centers for Disease Control (CDC) Podcasts

2012-04-09

Dr. Amesh Adalja, an associate at the Center for Biosecurity and clinical assistant professor at the University of Pittsburgh School, of Medicine, discusses dengue fever outbreaks in the United States.  Created: 4/9/2012 by National Center for Emerging and Zoonotic Infectious Diseases (NCEZID).   Date Released: 4/16/2012.

Addressing Child Poverty: How Does the United States Compare With Other Nations?

Science.gov (United States)

Smeeding, Timothy; Thévenot, Céline

2016-04-01

Poverty during childhood raises a number of policy challenges. The earliest years are critical in terms of future cognitive and emotional development and early health outcomes, and have long-lasting consequences on future health. In this article child poverty in the United States is compared with a set of other developed countries. To the surprise of few, results show that child poverty is high in the United States. But why is poverty so much higher in the United States than in other rich nations? Among child poverty drivers, household composition and parent's labor market participation matter a great deal. But these are not insurmountable problems. Many of these disadvantages can be overcome by appropriate public policies. For example, single mothers have a very high probability of poverty in the United States, but this is not the case in other countries where the provision of work support increases mothers' labor earnings and together with strong public cash support effectively reduces child poverty. In this article we focus on the role and design of public expenditure to understand the functioning of the different national systems and highlight ways for improvements to reduce child poverty in the United States. We compare relative child poverty in the United States with poverty in a set of selected countries. The takeaway is that the United States underinvests in its children and their families and in so doing this leads to high child poverty and poor health and educational outcomes. If a nation like the United States wants to decrease poverty and improve health and life chances for poor children, it must support parental employment and incomes, and invest in children's futures as do other similar nations with less child poverty. Copyright © 2016 Academic Pediatric Association. Published by Elsevier Inc. All rights reserved.

Dynamics of Pertussis Transmission in the United States

Science.gov (United States)

Magpantay, F. M. G.; Rohani, P.

2015-01-01

Past patterns of infectious disease transmission set the stage on which modern epidemiologic dynamics are played out. Here, we present a comprehensive account of pertussis (whooping cough) transmission in the United States during the early vaccine era. We analyzed recently digitized weekly incidence records from Morbidity and Mortality Weekly Reports from 1938 to 1955, when the whole-cell pertussis vaccine was rolled out, and related them to contemporary patterns of transmission and resurgence documented in monthly incidence data from the National Notifiable Diseases Surveillance System. We found that, during the early vaccine era, pertussis epidemics in US states could be categorized as 1) annual, 2) initially annual and later multiennial, or 3) multiennial. States with predominantly annual cycles tended to have higher per capita birth rates, more household crowding, more children per family, and lower rates of school attendance than the states with multiennial cycles. Additionally, states that exhibited annual epidemics during 1938–1955 have had the highest recent (2001–2010) incidence, while those states that transitioned from annual cycles to multiennial cycles have had relatively low recent incidence. Our study provides an extensive picture of pertussis epidemiology in the United States dating back to the onset of vaccination, a back-story that could aid epidemiologists in understanding contemporary transmission patterns. PMID:26022662

31 CFR 540.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 540.705 Section 540.705 Money and Finance: Treasury... Administrative collection; referral to United States Department of Justice. In the event that the respondent does... Treasury or to the United States Department of Justice for appropriate action to recover the penalty in a...

31 CFR 586.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 586.705 Section 586.705 Money and Finance: Treasury....705 Administrative collection; referral to United States Department of Justice. In the event that the... Treasury or to the United States Department of Justice for appropriate action to recover the penalty in a...

31 CFR 597.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 597.705 Section 597.705 Money and Finance: Treasury... collection; referral to United States Department of Justice. In the event that the respondent does not pay... Department of the Treasury or to the United States Department of Justice for appropriate action to recover...

31 CFR 587.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 587.705 Section 587.705 Money and Finance: Treasury... § 587.705 Administrative collection; referral to United States Department of Justice. In the event that... Department of the Treasury or to the United States Department of Justice for appropriate action to recover...

United States Earthquake Intensity Database, 1638-1985

Data.gov (United States)

National Oceanic and Atmospheric Administration, Department of Commerce — The United States Earthquake Intensity Database is a collection of damage and felt reports for over 23,000 U.S. earthquakes from 1638-1985. The majority of...

Healthcare Needs of Homeless Youth in the United States

OpenAIRE

TERRY, Marisa J; BEDI, Gurpreet; PATEL, Neil

2010-01-01

Approximately 1.6 - 2.8 million youth at any given time in the United States are considered homeless and at high risk for poor social and health outcomes. It is estimated that in the United States homelessness overall is expected to rise 10 -20 percent in the next year. While governmental and private programs exist to address the tribulations faced by homeless persons, youth continue to be underserved. The 2009, $787 billion economic stimulus package includes $1.5 billion to address issues...

77 FR 56811 - United States Travel and Tourism Advisory Board; Meeting

Science.gov (United States)

2012-09-14

... DEPARTMENT OF COMMERCE International Trade Administration United States Travel and Tourism... the United States Travel and Tourism Advisory Board (Board). The Board will meet to present updates on... implementation of the National Travel and Tourism Strategy and the progress on implementing the President's...

75 FR 51978 - United States Standards for Grades of Pineapple Juice

Science.gov (United States)

2010-08-24

...-327] United States Standards for Grades of Pineapple Juice AGENCY: Agricultural Marketing Service, USDA. ACTION: Notice; correction. SUMMARY: The United States Standards for Grades of Pineapple Juice... e-mail [email protected] . Corrected copies of the U.S. Standards for Grades of Pineapple...

75 FR 31465 - United States, State of Illinois, State of Colorado, and State of Indiana

Science.gov (United States)

2010-06-03

..., and often offer full-service restaurants or in-service dining. Premiere theatres also differ from... selection is deemed not to be a suitable alternative, the United States shall in its sole discretion select... suitable alternative pursuant to Section VI(A). If AMC's selection is deemed not to be a suitable...

Framework for Naval Cooperation between Vietnam and the United States

Science.gov (United States)

2017-06-09

the Vietnam-United States relationship has taken giant steps forward in virtually every aspect, especially solidified by a Comprehensive Partnership...United States relationship has taken giant steps forward in virtually every aspect, especially solidified by a Comprehensive Partnership Agreement signed...Economic Zone FTA Free Trade Agreement GDP Gross Domestic Product IMET International Military Education and Training MIA Missing in Action

Performance of diagnostic mammography differs in the United States and Denmark

DEFF Research Database (Denmark)

Jensen, Allan; Geller, Berta M; Gard, Charlotte C

2010-01-01

in the United States and Denmark. The performance of 93,585 diagnostic mammograms from 180 facilities contributing data to the US Breast Cancer Surveillance Consortium (BCSC) from 1999 to 2001 was compared to that of all 51,313 diagnostic mammograms performed at Danish clinics in 2000. We used the imaging...... workup's final assessment to determine sensitivity, specificity and an estimate of accuracy: area under the receiver-operating characteristics (ROCs) curve (AUC). Diagnostic mammography had slightly higher sensitivity in the United States (85%) than in Denmark (82%). In contrast, it had higher...... specificity in Denmark (99%) than in the United States (93%). The AUC was high in both countries: 0.91 in United States and 0.95 in Denmark. Denmark's higher accuracy may result from supplementary ultrasound examinations, which are provided to 74% of Danish women but only 37% to 52% of US women. In addition...

Estimating annualized earthquake losses for the conterminous United States

Science.gov (United States)

Jaiswal, Kishor S.; Bausch, Douglas; Chen, Rui; Bouabid, Jawhar; Seligson, Hope

2015-01-01

We make use of the most recent National Seismic Hazard Maps (the years 2008 and 2014 cycles), updated census data on population, and economic exposure estimates of general building stock to quantify annualized earthquake loss (AEL) for the conterminous United States. The AEL analyses were performed using the Federal Emergency Management Agency's (FEMA) Hazus software, which facilitated a systematic comparison of the influence of the 2014 National Seismic Hazard Maps in terms of annualized loss estimates in different parts of the country. The losses from an individual earthquake could easily exceed many tens of billions of dollars, and the long-term averaged value of losses from all earthquakes within the conterminous U.S. has been estimated to be a few billion dollars per year. This study estimated nationwide losses to be approximately $4.5 billion per year (in 2012$), roughly 80% of which can be attributed to the States of California, Oregon and Washington. We document the change in estimated AELs arising solely from the change in the assumed hazard map. The change from the 2008 map to the 2014 map results in a 10 to 20% reduction in AELs for the highly seismic States of the Western United States, whereas the reduction is even more significant for Central and Eastern United States.

31 CFR 593.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 593.705 Section 593.705 Money and Finance: Treasury... collection; referral to United States Department of Justice. In the event that the respondent does not pay... United States Department of Justice for appropriate action to recover the penalty in a civil suit in a...

31 CFR 539.705 - Administrative collection; referral to United States Department of Justice.

Science.gov (United States)

2010-07-01

... to United States Department of Justice. 539.705 Section 539.705 Money and Finance: Treasury... collection; referral to United States Department of Justice. In the event that the respondent does not pay... United States Department of Justice for appropriate action to recover the penalty in a civil suit in a...

Radioactive residues at nuclear sites in the United States of America

International Nuclear Information System (INIS)

Fiore, J.; Rampertaap, A.; Greeves, J.; MacKinney, J.; Raguso, M.; Selstrom, J.

2000-01-01

The United States of America has a large number of sites where radioactive materials have been mined, processed, produced, or used. Upon completion of activities at these sites, some will be cleaned up completely and released for unrestricted future use. However, at other sites, contamination will remain on the site following cleanup, requiring long term institutional controls. Depending on the purpose or the activity conducted at a specific site, these locations are generally under the jurisdiction of a federal agency: the United States Department of Energy, the United States Nuclear Regulatory Commission, the United States Environmental Protection Agency, or the United States Department of Defense. However, under certain conditions, the Nuclear Regulatory Commission relinquishes regulatory authority to individual states to regulate the commercial uses of radioactive materials (except for nuclear reactors), so some locations with radioactive materials are under the jurisdiction of individual states. Other sites with naturally occurring radioactive contamination may also be controlled by individual states. One or two sites under the jurisdiction of each agency are discussed where radioactive materials either existed in the past or exist today, and the source of contamination, the anticipated end state, and the process by which the responsible agency did or will conduct cleanup and site closure are described. Several issues are reviewed that must be addressed in order to design and implement remediations that will ensure long term protection for the environment and future inhabitants. The role of citizens in environmental cleanups is examined, and how institutional controls may be applied to ensure long term protection of remediations that leave some contaminants in place. (author)

NCHS - Leading Causes of Death: United States

Data.gov (United States)

U.S. Department of Health & Human Services — This dataset presents the age-adjusted death rates for the 10 leading causes of death in the United States beginning in 1999. Data are based on information from all...

Climate change indicators in the United States

Science.gov (United States)

2010-04-01

The U.S. Environmental Protection Agency (EPA) has published this report, Climate Change Indicators in the United States, to help readers interpret a set of important indicators to better understand climate change. The report presents 24 indicators, ...

Surveillance for Viral Hepatitis - United States, 2014

Science.gov (United States)

... Resource Center Anonymous Feedback Viral Hepatitis Surveillance for Viral Hepatitis – United States, 2014 Recommend on Facebook Tweet Share ... Cases Hepatitis A Hepatitis B Hepatitis C Discussion Hepatitis A virus Index PAGE DESCRIPTION Table 2.1 Reported ...

United States extension of indemnification to utilities and contractors

International Nuclear Information System (INIS)

Cunningham, G.H.

1988-01-01

The status of legislation in the United States, usually known as the Price-Anderson Act, provides an assured source and means of compensation for members of the public who may be injured as a result of a nuclear accident at a licensed commercial nuclear power plant or at a facility of the United States Government operated by a contractor. First a brief overview of the Act and its history is given, then the course of legislation to extend the Price-Anderson Act through the United States Congress is charted with comments made on the major issues of the debate. The Act requires that a least $560 million in insurance and/or Government indemnity is available to cover public liability claims arising out of an accident at a nuclear power plant. The Act also limits the total liability of all persons for any nuclear incident to a predetermined amount and this is one issue discussed. Final action on the legal situation should be taken in 1988. (U.K.)

Some Spatial Aspects of Southeastern United States Climatology.

Science.gov (United States)

Soule, Peter T.

1998-01-01

Focuses on the climatology of an eight-state region in the southern and southeastern United States. Discusses general controls of climate and spatial patterns of various climatic averages. Examines mapped extremes as a means of fostering increased awareness of the variability that exists for climatic conditions in the region. (CMK)

Travel to the United States under the Visa Waiver Program

CERN Multimedia

2003-01-01

The following information has been taken from the Web site of the United States Embassy in Paris, which shall be the only authentic text in the matter: http://www.amb-usa.fr/consul/niv_vwpfr.htm With effect from 15 May 2003, Belgian citizens wishing to travel to the United States (for business or pleasure for a maximum of 90 days) shall be eligible for admission without a visa only if they are in possession of a valid MACHINE-READABLE passport. However, they may still travel to the United States with a valid old-style passport after this date provided that they obtain a visa. This visa waiver for those holding a valid MACHINE-READABLE passport will also apply to the citizens of the following countries with effect from 1st October 2003: Andorra, Australia, Austria, Brunei, Denmark, Finland, France, Germany, Ireland, Italy, Japan, Liechtenstein, Luxemburg, Monaco, Netherlands, New Zealand, Norway, Portugal, San Marino, Singapore, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Citizens not in poss...

Energy policy in the United States

Energy Technology Data Exchange (ETDEWEB)

McCormack, M

1978-06-01

Energy policy in the United States is examined with particular regard to the nuclear power industry. The advantages of nuclear power over conventional and other sources are presented and the vigorous expansion of research and development is advocated. Future energy supplies are discussed and the author stresses the necessity for continued research into breeder technology.