U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication Year 2003 Remove constraint Publication Year: 2003
Start Over

Search

36,012  Search Results

« Previous | 1 - 20 of 36,012 |
Number of results to display per page

Search Results

1. "Bottoming out?" among rural African American women who use cocaine

Author:
Brown, E.J.; Trujillo, T.H.
Source:
Journal of rural health 2003 v.19 no.4 pp. 441-449
ISSN:
0890-765X
Subject:
cocaine; Blacks; rural women; rural health; drug abuse; qualitative analysis; quantitative analysis; socioeconomic status; employment; child custody; family relations; Florida
DOI:
10.1111/j.1748-0361.2003.tb00581.x
PubMed:
14526502

2. "Place" as an Integrating Concept in Natural Resource Politics: Propositions for a Social Science Research Agenda

Author:
Cheng, Antony S.; Kruger, Linda E.; Daniels, Steven E.
Source:
Society & natural resources 2003 v.16 no.2 pp. 87-104
ISSN:
0894-1920
Subject:
decision making; politics; scientists; social sciences
Abstract:
... This article lays out six propositions centering on a relationship between people-place connections and strategic behavior in natural resource politics. The first two propositions suggest a strong and direct connection between self-identity, place, and how individuals perceive and value the environment. The third, fourth, and fifth propositions tie together social group identity and place, particu ...
DOI:
10.1080/08941920309199

3. "Spanish" pepper trellis system and high plant density can increase fruit yield, fruit quality, and reduce labor in a hydroponic, passive-ventilated greenhouse

Author:
Jovicich, E.; Cantliffe, D.J.; Stoffella, P.J.
Source:
Acta horticulturae 2003 v. no.614 pp. 255-262
ISSN:
0567-7572
Subject:
Capsicum annuum; bags; buds; canopy; flowers; fruit quality; fruit set; fruit yield; fruits; greenhouses; hydroponics; labor; pepper; plant density; polyethylene; spring; stems; sweet peppers; United States
Abstract:
... The production and quality of red bell pepper (Capsicum annuum L. cv. ‘HA3378’) fruits were evaluated in a hydroponic system in a passive-ventilated greenhouse during spring and summer 2000 in Gainesville, FL, USA. Two plant growing systems were used: a) “V” trellis system (plants pruned to two stems, individually and vertically trained); and b) “Spanish” system (plants not pruned, with lateral ho ...

4. "The principles of rational agriculture" by Albrecht Daniel Thaer (1752-1828). An approach to the sustainability of cropping systems at the beginning of the 19th century

Author:
Feller, C.L.; Thuries, L.J.M.; Manlay, R.J.; Robin, P.; Frossard, E.
Source:
Zeitschrift für Pflanzenernährung und Bodenkunde 2003 v.166 no.6 pp. 687-698
ISSN:
1436-8730
Subject:
sustainable agriculture; agricultural history; soil fertility; soil organic matter; agricultural soils; Germany
DOI:
10.1002/jpln.200321233

5. 'Stinking, disease-spreading brutes' or 'four-legged landscape managers'? Livestock, pastoralism and society in Germany and the USA

Author:
Bieling, Claudia; Plieninger, Tobias
Source:
Outlook on agriculture 2003 v.32 no.1 pp. 7-12
ISSN:
0030-7270
Subject:
attitudes and opinions; politics; landscapes; farmers; pastoralism; livestock; hills; forests; Germany; United States
Abstract:
... Comparisons between the Black Forest region of Germany and the Sierra Nevada foothills in the USA show considerable parallels in the relationship between livestock raisers and society. This becomes evident by sketching the historic course of interactions between society and pastoralism as well as the present situation. The authors emphasize that purely economic or ecological studies of pastoralism ...
DOI:
10.5367/000000003101294208

6. (+)-Menthol and Its Hydroxy Derivatives, Novel Fungal Monoterpenols from the Fusicoccin-producing Fungi, Phomopsis amygdali F6a and Niigata 2

Author:
Takeshi SASSA; Hiromichi KENMOKU; Mitsuyoshi SATO; Tetsuya MURAYAMA; Nobuo KATO
Source:
Bioscience, biotechnology, and biochemistry 2003 v.67 no.3 pp. 475-479
ISSN:
1347-6947
Subject:
Diaporthe amygdali; Mentha piperita nothosubsp. piperita; biosynthesis; biotechnology; diterpenoids; enantiomers; fermentation; fungi; fusicoccin; glucosides; metabolites; monoterpenoids
Abstract:
... In our search for new fusicoccins of unique diterpene glucosides from Phomopsis amygdali, we found that a fragrant substance was formed in the early stage of fusicoccin fermentation. This fragrant constituent was isolated and identified as (+)-menthol, which is a novel fungal metabolite as the enantiomer of well-known peppermint (−)-menthol. (+)-7-Hydroxymenthol and new (+)-(6S)-hydroxymenthol wer ...
DOI:
10.1271/bbb.67.475

7. (E)-1-(2,3,6-Trimethylphenyl)buta-1,3-diene: a potent grape-derived odorant in wine

Author:
Janusz, A.; Capone, D.L.; Puglisi, C.J.; Perkins, M.V.; Elsey, G.M.; Sefton, M.A.
Source:
Journal of agricultural and food chemistry 2003 v.51 no.26 pp. 7759-7763
ISSN:
0021-8561
Subject:
white wines; wine grapes; volatile compounds; odors; phenolic compounds; alkenes; food composition; gas chromatography; mass spectrometry; glycosides; sensory evaluation
Abstract:
... (E)-1-(2,3,6-Trimethylphenyl)buta-1,3-diene (TPB) was identified as a potent odorant in acid hydrolysates of crude glycoconjugate fractions isolated from grapes and grape vine leaves. TPB was also identified in a Semillon wine, using gas chromatography/mass spectrometry, by co-injection with an authentic sample. TPB had an aroma detection threshold of 40 ng/L in a neutral white wine and the concen ...
DOI:
10.1021/jf0347113

8. (E)-8-dodecenyl acetate: major component of the female sex pheromone of a macadamia nut borer, Ecdytolopha torticornis

Author:
Chamberlain, D.J.; Beevor, P.S.; Cork, A.; Hall, D.R.
Source:
Entomologia experimentalis et applicata 2003 v.107 no.1 pp. 91-93
ISSN:
0013-8703
Subject:
Tortricidae; pest identification; females; pheromone glands; sex pheromones; chemical composition; acetates; pest monitoring; pheromone traps; insect pests; Macadamia integrifolia; orchards; macadamia nuts; Costa Rica
DOI:
10.1046/j.1570-7458.2003.00035.x

9. (Z)-sarcodictyin A, a new highly cytotoxic diterpenoid from the soft coral Bellonella albiflora

Author:
Nakao, Y.; Yoshida, S.; Matsunaga, S.; Fusetani, N.
Source:
Journal of natural products 2003 v.66 no.4 pp. 524-527
ISSN:
0163-3864
Subject:
corals; animal products; diterpenoids; cytotoxins; chemical structure; stereochemistry; spectral analysis; olefin; protons; humans; cell lines; cytotoxicity; Japan
DOI:
10.1021/np0205452
PubMed:
12713406

10. -galactosidase extracts from Lactobacillus delbrueckii ssp. bulgaricus 11842

Author:
Vasiljevic, T.; Jelen, P.
Source:
Innovative food science & emerging technologies 2003 v.4 no.3 pp. 319-329
ISSN:
1466-8564
Subject:
Lactobacillus delbrueckii subsp. bulgaricus; air temperature; cellobiose; drying temperature; enzyme activity; freeze drying; lactose; powders; skim milk; spray drying; sucrose; water activity; whey protein
Abstract:
... The retention of β-galactosidase activity in crude cellular extract (CCE) preparations from Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 was investigated after spray drying at three different outlet air temperatures (40, 50 or 60 °C), freeze drying, and after 30 days storage. Lactose, skim milk and whey protein preparations in concentrations ranging from 5 to 30% (w/w) were used as dryin ...
DOI:
10.1016/S1466-8564(03)00022-5

11. 1,1′-Dimethyl-4,4′-bipyridinium-smectites as a novel adsorbent of phenols from water through charge-transfer interactions

Author:
Tomohiko Okada; Makoto Ogawa
Source:
Chemical communications 2003 v. no.12 pp. 1378-1379
ISSN:
1364-548X
Subject:
2,4-dichlorophenol; adsorbents; adsorption; aqueous solutions; chemical reactions; color; smectite
Abstract:
... The adsorption of 2,4-dichlorophenol onto the 1,1′-dimethyl-4,4′-bipyridinium-saponite, a smectite group of clay minerals, from dilute aqueous solution occurred effectively through charge-transfer interactions and such interactions resulted in the change in the color of the 1,1′-dimethyl-4,4′-bipyridinium-saponite. ...
DOI:
10.1039/b302144k

12. 1,5-Disubstituted imidazoles inhibit juvenile hormone biosynthesis by the corpora allata of the mosquito Aedesaegypti

Author:
Li, Yiping; Kuwano, Eiichi; Noriega, Fernando G.
Source:
Journal of insect physiology 2003 v.49 no.11 pp. 1005-1011
ISSN:
0022-1910
Subject:
Aedes aegypti; biosynthesis; blood meal; corpora allata; imidazoles; juvenile hormones; nutritional status
Abstract:
... We investigated the effect of fifteen 1,5-disubstituted imidazoles (1,5-dis) on juvenile hormone III (JH III) and methyl farnesoate (MF) biosynthesis by the corpora allata (CA) of the mosquito Aedesaegypti in vitro. Four compounds (TH-35, TH-83, TH-62 and TH-28) significantly decreased JH biosynthesis in the CA dissected from 3-day old sugar-fed females. The decrease of JH synthesis was not always ...
DOI:
10.1016/S0022-1910(03)00183-5
PubMed:
14568578

13. 1,8-Dihydroxynaphthalene (DHN)-melanin biosynthesis inhibitors increase erythritol production in Torula corallina, and DHN-melanin inhibits erythrose reductase

Author:
Lee, J.K.; Jung, H.M.; Kim, S.Y.
Source:
Applied and environmental microbiology 2003 v.69 no.6 pp. 3427-3434
ISSN:
0099-2240
Subject:
Torula; yeasts; erythritol; biosynthesis; sweet-tasting compounds; food biotechnology; alcohol oxidoreductases; enzyme activity; enzyme inhibition; enzyme inhibitors; aromatic hydrocarbons; melanin; melanization; fermentation
Abstract:
... The yeast Torula corallina is a strong erythritol producer that is used in the industrial production of erythritol. However, melanin accumulation during culture represents a serious problem for the purification of erythritol from the fermentation broth. Melanin biosynthesis inhibitors such as 3,4-dihydroxyphenylalanine and 1,8-dihydroxynaphthalene (DHN)-melanin inhibitors were added to the T. cora ...
DOI:
10.1128/AEM.69.6.3427-3434.2003
PubMed:
12788746
PubMed Central:
PMC161539

14. 1-Aminocyclopropane-1-Carboxylic Acid Enhanced Direct Somatic Embryogenesis from Oncidium Leaf Cultures

Author:
J.T. Chen; W.C. Chang
Source:
Biologia plantarum 2003 v.46 no.3 pp. 455-458
ISSN:
0006-3134
Subject:
1-aminocyclopropane-1-carboxylic acid; Oncidium; cobalt; ethylene; ethylene inhibitors; explants; leaves; silver nitrate; somatic embryogenesis; somatic embryos
Abstract:
... Influence of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) and two ethylene inhibitors, silver nitrate (AgNO₃) and cobalt chloride (CoCl₂), on direct somatic embryogenesis were tested in vitro using leaf cultures of Oncidium cv. Gower Ramsey. Leaf cells of tips, adaxial sides and cut ends could directly form somatic embryos on a hormone-free 1/2-strength MS medium. The frequen ...
DOI:
10.1023/A:1024307025893

15. 1-Methylcyclopropene (1-MCP) increases CO2 injury in apples

Author:
DeEll, Jennifer R.; Murr, Dennis P.; Wiley, Len; Porteous, Murray D.
Source:
Acta horticulturae 2003 v. no.600 pp. 277-280
ISSN:
0567-7572
Subject:
1-methylcyclopropene; apples; carbon dioxide; harvesting; oxygen
Abstract:
... The objective of this research was to determine the nature and extent of CO2 injury in apples treated with 1-methylcyclopropene (1-MCP) and stored in controlled atmosphere (CA). ‘McIntosh’ apples were treated immediately after harvest with 0, 60, 300, or 600 nL·L-1 of 1-MCP for 18 to 24 hours at ~20°C, and then placed in CA (3% O2 + 2.5% CCO2 for the first 30 days followed by 3% O2 + 4.5% CO2 ther ...

16. 1-Methylcyclopropene (Smartfresh) as an alternative to modified atmosphere and controlled atmosphere storage of apples and pears

Author:
Crouch, Ian
Source:
Acta horticulturae 2003 v. no.600 pp. 433-436
ISSN:
0567-7572
Subject:
mechanism of action; 1-methylcyclopropene; diphenylamine; ethylene; apples; texture; total soluble solids; controlled atmosphere storage; modified atmosphere packaging; storage time; pears; ripening; malic acid; cold storage
Abstract:
... 1-Methylcyclopropene (1-MCP), also known as SmartFresh™ (0.14%), blocks ethylene action in harvested fruit. 1-MCP’s mode of action is via a preferential attachment to the ethylene receptor, thereby blocking the effects of both endogenous and exogenous ethylene. This study determined the potential of 1-MCP as an alternative to modified atmosphere (MA) and controlled atmosphere (CA) storage of apple ...

17. 1-Methylcyclopropene Increases Storability and Shelf Life in Climacteric and Nonclimacteric Plums

Author:
Martínez-Romero, Domingo; Dupille, Eve; Guillén, Fabián; Valverde, Juan M.; Serrano, María; Valero, Daniel
Source:
Journal of agricultural and food chemistry 2003 v.51 no.16 pp. 4680-4686
ISSN:
0021-8561
Subject:
1-methylcyclopropene; acidity; cold storage; color; cultivars; ethylene production; plums; ripening; shelf life; weight loss
Abstract:
... The effect of 1-methylcyclopropene (1-MCP) at three different doses (0.25, 0.50, and 0.75 μL L-1) on the ripening processes of a climacteric, cv. Santa Rosa, and a suppressed climacteric type, cv. Golden Japan, plum was studied. For both cultivars, positive effects were observed in terms of inhibition of ethylene production and delays of the physical, chemical, and biochemical changes associated w ...
DOI:
10.1021/jf034338z

18. 1-Methylcyclopropene delays ripening process of 'Black Diamond' plum

Author:
Salvador, A.; Cuquerella, J.; Ubeda, S.
Source:
Acta horticulturae 2003 v. no.599 pp. 59-63
ISSN:
0567-7572
Subject:
1-methylcyclopropene; acidity; carbon dioxide; cold storage; color; ethylene production; firmness; fruit quality; plums; ripening; shelf life; sugar content
Abstract:
... Plums cv. ‘Black Diamond’ were treated with concentrations of 0, 500 or 750 ppb 1-Methylcyclopropene (1-MCP) for 24 h at 1°C and then stored at 1°C. After harvest and after 10, 20, 30 or 40 days at 1°C, fruit were transferred to 20°C for 8 days simulating shelf-life. Ethylene emission of plums was strongly inhibited by 1-MCP and levels of CO2 production were significantly higher in non-treated fru ...

19. 1-Methylcyclopropene influx and efflux in ‘Cox’ apple and ‘Hass’ avocado fruit

Author:
Dauny, Paul T.; Joyce, Daryl C.; Gamby, Cecile
Source:
Postharvest biology and technology 2003 v.29 no.1 pp. 101-105
ISSN:
0925-5214
Subject:
1-methylcyclopropene; Malus domestica; Persea americana; apples; avocado oil; avocados; binding sites; ethylene; fruits; lipid content; ripening
Abstract:
... Ethylene initiates and/or co-ordinates ripening associated processes in climacteric fruits. Among climacteric fruits, avocado is relatively high in lipid content and apple is comparatively low. The ethylene binding site blocker 1-methylcyclopropene (1-MCP) was sorbed faster and in greater amounts by avocado fruit (Persea americana Mill. ‘Hass’) and avocado oil than by apple fruit (Malus sylvestris ...
DOI:
10.1016/S0925-5214(03)00042-5

20. 1-Methylcyclopropene: a review

Author:
Blankenship, Slyvia M.; Dole, John M.
Source:
Postharvest biology and technology 2003 v.28 no.1 pp. 1-25
ISSN:
0925-5214
Subject:
1-methylcyclopropene; acidity; chlorophyll; color; cultivars; developmental stages; ethylene; ethylene inhibitors; ethylene production; fruits; harvest date; products and commodities; scientists; sugars; temperature; vegetable crops
Abstract:
... Since the discovery of 1-methylcyclopropene (1-MCP) as an inhibitor of ethylene action, over 100 studies have examined details of its action, application and effects on ethylene inhibition. This plant growth regulator is a tool that can help scientists make major advances in understanding the role of ethylene in plants. 1-MCP prevents ethylene effects in a broad range of fruits, vegetables and flo ...
DOI:
10.1016/S0925-5214(02)00246-6