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1

Antiplasmodial constituents of Cajanus cajan.  

PubMed

Bioactivity-guided fractionation of extracts of roots and leaves of Cajanus cajan afforded 8 compounds: betulinic acid, biochanin A, cajanol, genistein and 2'-hydroxygenistein, longistylin A and C, and pinostrobin. The two stilbenes, longistylin A and C, and betulinic acid showed a moderately high in vitro activity against the chloroquine-sensitive Plasmodium falciparum strain 3D7. PMID:15022164

Duker-Eshun, George; Jaroszewski, Jerzy W; Asomaning, William A; Oppong-Boachie, Francis; Brøgger Christensen, S

2004-02-01

2

Biological activities and medicinal properties of Cajanus cajan (L) Millsp.  

PubMed Central

Cajanus cajan (L) Millsp. (Sanskrit: Adhaki, Hindi: Arhar, English: Pigeon pea, Bengali: Tur) (family: Fabaceae) is the most important grain legume crop of rain-fed agriculture in semi-arid tropics. It is both a food crop and a cover/forage crop with high levels of proteins and important amino acids like methionine, lysine and tryptophan. During the last few decades extensive studies have been carried out regarding the chemistry of C. cajan and considerable progress has been achieved regarding its biological activities and medicinal applications. This review article gives an overview on the biological activities of the compounds isolated, pharmacological actions and clinical studies of C. cajan extracts apart from its general details. PMID:22247887

Pal, Dilipkumar; Mishra, Pragya; Sachan, Neetu; Ghosh, Ashoke K.

2011-01-01

3

Cajachalcone: An Antimalarial Compound from Cajanus cajan Leaf Extract  

PubMed Central

Cajanus cajan L, a member of the family Fabaceae, was identified from the Nigerian antimalarial ethnobotany as possessing antimalarial properties. The bioassay-guided fractionation of the crude methanol extract of C. cajan leaves was done in vitro using the multiresistant strain of Plasmodium falciparum (K1) in the parasite lactate dehydrogenase assay. Isolation of compound was achieved by a combination of chromatographic techniques, while the structure of the compound was elucidated by spectroscopy. This led to the identification of a cajachalcone, 2?,6?-dihydroxy-4-methoxy chalcone, as the biologically active constituent from the ethyl acetate fraction. Cajachalcone had an IC50 value of 2.0??g/mL (7.4??M) and could be a lead for anti-malarial drug discovery. PMID:23970954

Ajaiyeoba, E. O.; Ogbole, O. O.; Abiodun, O. O.; Ashidi, J. S.; Houghton, P. J.; Wright, C. W.

2013-01-01

4

Aluminum-induced abiotic stress counteracts Fusarium infection in Cajanus cajan (L.) Millsp  

Microsoft Academic Search

Interaction between Al and fungal pathogen Fusarium incarnatum-equiseti was investigated in Cajanus cajan (L.) Millsp. Germinating seeds of C. cajan conditioned by treating presoaked seeds with Al at concentrations 0, 10, 50, and 100 µM, pH 4.5, for 24 h were subjected to fungal infection. Subsequently, generation of reactive oxygen species (ROS: O2 and H2O2), cell death, and activity of

Prakasini Satapathy; V. Mohan Murali Achary; Brahma B. Panda

2012-01-01

5

Aluminum-induced abiotic stress counteracts Fusarium infection in Cajanus cajan (L.) Millsp  

Microsoft Academic Search

Interaction between Al and fungal pathogen Fusarium incarnatum-equiseti was investigated in Cajanus cajan (L.) Millsp. Germinating seeds of C. cajan conditioned by treating presoaked seeds with Al at concentrations 0, 10, 50, and 100 µM, pH 4.5, for 24 h were subjected to fungal infection. Subsequently, generation of reactive oxygen species (ROS: O2 and H2O2), cell death, and activity of

Prakasini Satapathy; V. Mohan Murali Achary; Brahma B. Panda

2011-01-01

6

Biomass production and nutrient recycling through litter from pigeonpea ( Cajanus cajan L. Millsp.)  

Microsoft Academic Search

In farm forestry trials for woody biomass production, pigeonpea (Cajanus cajan L. Millsp.) showed excellent adaptability to wide variations of inter-row or interplant spacings for stem as well as grain yields. The crucial factor determining biomass production was not spacing but planting density. Stem and grain yield increase beyond a density of ca. 20 000 plants\\/ha was minimal, so this

D. L. N. Rao; H. S. Gill

1995-01-01

7

Progress of tissue culture and genetic transformation research in pigeon pea [ Cajanus cajan (L.) Millsp.  

Microsoft Academic Search

Pigeon pea [Cajanus cajan (L.) Millsp.] (Family: Fabaceae) is an important legume crop cultivated across 50 countries in Asia, Africa, and the Americas;\\u000a and ranks fifth in area among pulses after soybean, common bean, peanut, and chickpea. It is consumed as a major source of\\u000a protein (21%) to the human population in many developing countries. In India, it is the

Gaurav Krishna; P. Sairam Reddy; P. W. Ramteke; P. S. Bhattacharya

2010-01-01

8

Sustainable Approaches for Biological Control of Fusarium Wilt in Pigeon Pea ( Cajanus cajan L. Millspaugh)  

Microsoft Academic Search

\\u000a \\u000a Cajanus cajan (Pigeon pea) is an important crop of Indian subcontinent and African countries, cultivated in the tropics and subtropics.\\u000a Fusarium wilt is one of the major yield and growth-limiting factors of pigeon pea. Along with nematodes such as Meloidogyne incognita and Heterodera cajani, F. udum result in highly destructive wilt disease complex, which is a major constraint for the

Piyush Pandey; Abhinav Aeron; D. K. Maheshwari

9

Antioxidant Activities of Extracts and Main Components of Pigeonpea [Cajanus cajan (L.) Millsp.] Leaves  

Microsoft Academic Search

Antioxidant activities of the aqueous and ethanol extracts of pigeonpea (Cajanus cajan (L.) Millsp.) leaves, as well as petroleum ether, ethyl acetate, n-butanol and water fractions and the four main compounds separated from the ethanol extract, i.e. cajaninstilbene acid (3-hydroxy-4-prenylmethoxystilbene-2-carboxylic acid), pinostrobin, vitexin and orientin, were examined by a DPPH radical-scavenging assay and a ?-carotene-linoleic acid test. In the DPPH

Nan Wu; Kuang Fu; Yu-Jie Fu; Yuan-Gang Zu; Fang-Rong Chang; Yung-Husan Chen; Xiao-Lei Liu; Yu Kong; Wei Liu; Cheng-Bo Gu

2009-01-01

10

EXPERIMENTAL EVIDENCE FOR THE ANTIDIABETIC ACTIVITY OF CAJANUS CAJAN LEAVES IN RATS  

PubMed Central

The antidiabetic activity of methanol leaves extract of Cajanus cajan (L.) Millsp. (Fabaceae) was studied in alloxan-diabetic and in oral glucose loaded rats. The acute toxicity and lethality (LD50) and the phytochemical analysis of the extract were also evaluated. The results showed that the extract (400 and 600 mg/kg) significantly (P<0.05) reduced fasting blood sugar of alloxan diabetic rats in a dose-related manner, with maximum hypoglycemic effect at 4 – 6 h. The extract (400 and 600 mg/kg) also significantly (P<0.05) suppressed the peak postprandial rise in blood glucose of normal rats by 101.8 and 57.40% respectively. Acute toxicity and lethality test of the extract in rats gave an oral LD50 greater than 5 g/kg. The findings indicate that the leaves of C. cajan may be beneficial as an antidiabetic therapy. PMID:24825970

Ezike, Adaobi C.; Akah, Peter A.; Okoli, Charles C.; Okpala, Chinwe B.

2010-01-01

11

Experimental evidence for the antidiabetic activity of cajanus cajan leaves in rats.  

PubMed

The antidiabetic activity of methanol leaves extract of Cajanus cajan (L.) Millsp. (Fabaceae) was studied in alloxan-diabetic and in oral glucose loaded rats. The acute toxicity and lethality (LD50) and the phytochemical analysis of the extract were also evaluated. The results showed that the extract (400 and 600 mg/kg) significantly (P<0.05) reduced fasting blood sugar of alloxan diabetic rats in a dose-related manner, with maximum hypoglycemic effect at 4 - 6 h. The extract (400 and 600 mg/kg) also significantly (P<0.05) suppressed the peak postprandial rise in blood glucose of normal rats by 101.8 and 57.40% respectively. Acute toxicity and lethality test of the extract in rats gave an oral LD50 greater than 5 g/kg. The findings indicate that the leaves of C. cajan may be beneficial as an antidiabetic therapy. PMID:24825970

Ezike, Adaobi C; Akah, Peter A; Okoli, Charles C; Okpala, Chinwe B

2010-03-01

12

HCH, endosulfan, and fluvalinate residue behavior in pigeonpea (Cajanus cajan L. Millsp)  

SciTech Connect

Pigeonpea (Cajanus cajan L. Millsp) is one of the major pulse crop of India. The loss of pigeonpea crop due to pod and foliage pests is significant, the major pests being pod fly, hairy caterpillar, aphids, white fly, plume moth borer, leaf caterpillar and jassids. It is imperative to save every grain by chemical control methods but these toxicants should not leave unusually high residues on the edible parts. In this paper the authors report the residue behavior of three different insecticides namely, hexachlorocyclohexane, endosulfan and fluvalinate on this crop.

Mukherjee, I.; Gopal, M.; Yaduraju, N.T. (Indian Agricultural Research Inst., New Delhi (India))

1992-01-01

13

Pinostrobin from Cajanus cajan (L.) Millsp. inhibits sodium channel-activated depolarization of mouse brain synaptoneurosomes.  

PubMed

This investigation focuses on the in vitro neuroactive properties of pinostrobin, a substituted flavanone from Cajanus cajan (L.) Millsp. of the Fabaceae family. We demonstrate that pinostrobin inhibits voltage-gated sodium channels of mammalian brain (IC(50)=23 µM) based on the ability of this substance to suppress the depolarizing effects of the sodium channel-selective activator veratridine in a synaptoneurosomal preparation from mouse brain. The resting membrane potential of synaptoneurosomes was unaffected by pinostrobin. The pharmacological profile of pinostrobin resembles that of depressant drugs that block sodium channels. PMID:20472040

Nicholson, Russell A; David, Laurence S; Pan, Rui Le; Liu, Xin Min

2010-10-01

14

Effect of waterlogging on carbohydrate metabolism in pigeon pea ( Cajanus cajan L.): Upregulation of sucrose synthase and alcohol dehydrogenase  

Microsoft Academic Search

The objective of this study was to examine the role of root carbohydrate levels and metabolism in the waterlogging tolerance of contrasting pigeon pea genotypes. An experiment was conducted with 4 pigeon pea (Cajanus cajan) genotypes, 2 tolerant (ICPL 84023 and ICP 301) and 2 susceptible (ICP 7035 and Pusa 207) to waterlogging stress. Waterlogging treatment was given by placing

D. Kumutha; R. K. Sairam; K. Ezhilmathi; V. Chinnusamy; R. C. Meena

2008-01-01

15

Pinostrobin and Cajanus lactone isolated from Cajanus cajan (L.) leaves inhibits TNF-? and IL-1? production: in vitro and in vivo experimentation.  

PubMed

The tumor necrosis factor alpha (TNF-?) and interleukin 1 beta (IL-1?) inhibitory activities of Cajanus cajan (leaves) crude methanolic extract, its fractions and its phytochemical constituents were evaluated in lipopolysaccharide (LPS) stimulated RAW 264.7 and J774A.1 cells. Phytochemical investigation of the active ethyl acetate (CCE) and n-butanol (CCB) fractions of C. cajan L. leaves yielded 14 compounds. It was observed that both pinostrobin (9) and cajanus lactone (4) were found to be most active in inhibiting TNF-? (IC50<22 ?M) and IL-1? (IC50<40 ?M) whereas compounds 2, 3, 5-8, 10 and 14 showed moderate and mild effects (IC50=35.50-81.22 ?M for TNF-? and 38.23-89.10 ?M for IL-1?) in both the cell lines. Furthermore, at dose of 20mg/kg, both pinostrobin (9) and cajanus lactone (4) were found to reduce LPS-induced TNF-? levels by 48.6% and 55.0% respectively and IL-1? levels by 53.1% and 41.8% respectively in Sprague Dawley (SD) rats. These findings suggest that C. cajan L. leaves can be developed as an effective herbal remedy for the treatment and prevention of inflammation or associated ailments. PMID:24680612

Patel, Neeraj K; Bhutani, Kamlesh K

2014-06-15

16

Purification of Cajanus cajan root lectin and its interaction with rhizobial lipopolysaccharide as studied by different spectroscopic techniques.  

PubMed

A lectin present in roots of Cajanus cajan seedlings was isolated and purified by affinity chromatography. Sugar specificity assayed by hemagglutination-inhibition activity indicated that lectin belongs to glucose/mannose-specific group. The root lectin was found to be mannose-specific from the second day onwards as it was reconfirmed by specific elution of different days' sample from mannose agarose matrix. The maximum interaction of lectin with goat IgM was obtained in 10-day-old sample, indicating the highest crude lectin content. Lectin (total amount of eluted protein) from different days soil sample showed a maximum amount in 10-day-old sample. For further studies, the lectin has been isolated from the roots of 10-day C. cajan seedlings and purified on mannose-CL agarose column by affinity chromatography. Lectin was found to be a dimer of 18.5-kDa subunit as revealed by SDS-PAGE. Tryptophan quenching fluorescence was studied for C. cajan root lectin. Secondary structure of C. cajan root lectin as studied by circular dichroism was found to be a typical beta-pleated sheet structure. The interaction of purified root lectin with C. cajan-specific rhizobial lipopolysaccharide and its inhibition by specific and nonspecific sugars was demonstrated by fluorescence and circular dichroism. Results discussed in this paper were studied for the first time by different spectroscopic methods, suggesting that C. cajan root lectin-lipopolysaccharide interaction is specific. PMID:11716467

Naeem, A; Khan, R H; Vikram, H; Akif, M

2001-12-01

17

Application of pigeon pea (Cajanus cajan) stalks as raw material for xylooligosaccharides production.  

PubMed

Pigeon pea (Cajanus cajan) is a perennial plant widely cultivated in tropical and subtropical regions of many countries. The present studies aimed to produce xylooligosaccharides (XOS) from pigeon pea stalks in order to do value addition. The chemical analysis of stalks revealed 18.33 ± 1.40 % hemicelluloses in addition to cellulose, protein, and lignin. Sodium hydroxide coupled with steam application enabled almost 96 % recovery of original xylan, present in the pigeon pea stalks. Enzymatic hydrolysis of xylan led to production of XOS namely, xylobiose and xylotriose. Response surface model indicated a maximum yield of xylobiose (0.502 mg/ml) under the hydrolysis conditions of pH 4.91, temperature at 48.11 °C, enzyme dose at 11.01 U, and incubation time at 15.65 h. The ideal conditions for higher xylotriose yield (0.204 mg/ml) were pH 5.44, temperature at 39.29 °C, enzyme dose at 3.23 U, and incubation time at 15.26 h. The present investigation was successful in assessing the prospect of using pigeon pea stalks as a raw material for xylan extraction vis-à-vis XOS production. PMID:23456278

Samanta, A K; Jayapal, Natasha; Kolte, A P; Senani, S; Sridhar, Manpal; Mishra, Sukriti; Prasad, C S; Suresh, K P

2013-04-01

18

Characterization of Five Fungal Endophytes Producing Cajaninstilbene Acid Isolated from Pigeon Pea [Cajanus cajan (L.) Millsp.  

PubMed Central

Five fungal endophytes (K4, K5, K6, K9, K14) producing Cajaninstilbene acid (CSA, 3-hydroxy-4-prenyl-5-methoxystilbene-2-carboxylic acid) were isolated from the roots of pigeon pea [Cajanus cajan (L.) Millsp.]. CSA is responsible for the prominent pharmacological activities in pigeon pea. The amount of CSA in culture solution varied among the five fungal endophytes. K4 produced the highest levels of CSA (1037.13 µg/L) among the endophytes tested after incubation for five days. Both morphological characteristics and molecular methods were used for species identification of fungal endophytes. The five endophytic isolates were characterized by analyzing the internal transcribed spacer (ITS) rRNA and ?-tubulin genes. The K4, K5, K9 and K14 strains isolated from pigeon pea roots were found to be closely related to the species Fusarium oxysporum. K6 was identified as Neonectria macrodidym. The present study is the first report on the isolation and identification of fungal endophytes producing CSA in pigeon pea. The study also provides a scientific base for large scale production of CSA. PMID:22102911

Zu, Yuan Gang; Fu, Yu Jie; Wang, Wei; Luo, Meng; Efferth, Thomas

2011-01-01

19

Increased Effectiveness of Competitive Rhizobium Strains upon Inoculation of Cajanus cajan  

PubMed Central

A field study was conducted in lysimeters containing 15N-enriched soil to determine the effects of four competitive rhizobium strains upon yield parameters of pigeon peas (Cajanus cajan). The greatest differences observed were in seed yields; strain P132 effected the highest seed yield (121 ± 20 g per plant), and the control strain (indigenous rhizobia) effected the lowest yield (43.9 ± 8 g per plant). With the exception of seeds and pods, the dry matter weights were not different. Although there appeared to be no effect by inoculum strains on the fractional content of N derived from biological nitrogen fixation when the total plant biomass was considered, strains P132 and 401 partitioned more of the N derived from fixation into seeds and leaves than did the other strains. Because the seeds comprised the major portion of plant N, more total N and more N derived from biological nitrogen fixation (about half of total N) were found in plants inoculated with P132, whereas the smallest amount was found in the uninoculated controls. P132 was also the best competitor with respect to indigenous rhizobia and acounted for all of the nodules found on the plants in which it was inoculated. PMID:16347429

Hernandez, B. S.; Poth, M.; Focht, D. D.

1987-01-01

20

Identification and Validation of Expressed Sequence Tags from Pigeonpea (Cajanus cajan L.) Root  

PubMed Central

Pigeonpea (Cajanus cajan (L) Millsp.) is an important food legume crop of rain fed agriculture in the arid and semiarid tropics of the world. It has deep and extensive root system which serves a number of important physiological and metabolic functions in plant development and growth. In order to identify genes associated with pigeonpea root, ESTs were generated from the root tissues of pigeonpea (GRG-295 genotype) by normalized cDNA library. A total of 105 high quality ESTs were generated by sequencing of 250 random clones which resulted in 72 unigenes comprising 25 contigs and 47 singlets. The ESTs were assigned to 9 functional categories on the basis of their putative function. In order to validate the possible expression of transcripts, four genes, namely, S-adenosylmethionine synthetase, phosphoglycerate kinase, serine carboxypeptidase, and methionine aminopeptidase, were further analyzed by reverse transcriptase PCR. The possible role of the identified transcripts and their functions associated with root will also be a valuable resource for the functional genomics study in legume crop. PMID:24895494

Kumar, Ravi Ranjan; Yadav, Shailesh; Joshi, Shourabh; Bhandare, Prithviraj P.; Patil, Vinod Kumar; Kulkarni, Pramod B.; Sonkawade, Swati; Naik, G. R.

2014-01-01

21

Development of genic-SSR markers by deep transcriptome sequencing in pigeonpea [Cajanus cajan (L.) Millspaugh  

PubMed Central

Background Pigeonpea [Cajanus cajan (L.) Millspaugh], one of the most important food legumes of semi-arid tropical and subtropical regions, has limited genomic resources, particularly expressed sequence based (genic) markers. We report a comprehensive set of validated genic simple sequence repeat (SSR) markers using deep transcriptome sequencing, and its application in genetic diversity analysis and mapping. Results In this study, 43,324 transcriptome shotgun assembly unigene contigs were assembled from 1.696 million 454 GS-FLX sequence reads of separate pooled cDNA libraries prepared from leaf, root, stem and immature seed of two pigeonpea varieties, Asha and UPAS 120. A total of 3,771 genic-SSR loci, excluding homopolymeric and compound repeats, were identified; of which 2,877 PCR primer pairs were designed for marker development. Dinucleotide was the most common repeat motif with a frequency of 60.41%, followed by tri- (34.52%), hexa- (2.62%), tetra- (1.67%) and pentanucleotide (0.76%) repeat motifs. Primers were synthesized and tested for 772 of these loci with repeat lengths of ?18 bp. Of these, 550 markers were validated for consistent amplification in eight diverse pigeonpea varieties; 71 were found to be polymorphic on agarose gel electrophoresis. Genetic diversity analysis was done on 22 pigeonpea varieties and eight wild species using 20 highly polymorphic genic-SSR markers. The number of alleles at these loci ranged from 4-10 and the polymorphism information content values ranged from 0.46 to 0.72. Neighbor-joining dendrogram showed distinct separation of the different groups of pigeonpea cultivars and wild species. Deep transcriptome sequencing of the two parental lines helped in silico identification of polymorphic genic-SSR loci to facilitate the rapid development of an intra-species reference genetic map, a subset of which was validated for expected allelic segregation in the reference mapping population. Conclusion We developed 550 validated genic-SSR markers in pigeonpea using deep transcriptome sequencing. From these, 20 highly polymorphic markers were used to evaluate the genetic relationship among species of the genus Cajanus. A comprehensive set of genic-SSR markers was developed as an important genomic resource for diversity analysis and genetic mapping in pigeonpea. PMID:21251263

2011-01-01

22

Antioxidant activities of extracts and main components of Pigeonpea [Cajanus cajan (L.) Millsp.] leaves.  

PubMed

Antioxidant activities of the aqueous and ethanol extracts of pigeonpea [Cajanus cajan (L.) Millsp.] leaves, as well as petroleum ether, ethyl acetate, n-butanol and water fractions and the four main compounds separated from the ethanol extract, i.e. cajaninstilbene acid (3-hydroxy-4-prenylmethoxystilbene-2-carboxylic acid), pinostrobin, vitexin and orientin, were examined by a DPPH radical-scavenging assay and a beta-carotene-linoleic acid test. In the DPPH system, the antioxidant activity of the ethanol extracts was superior to that of the aqueous extracts, with IC(50) values were 242.01 and 404.91 microg/mL, respectively. Among the four fractions, the ethyl acetate one showed the highest scavenging activity, with an IC(50) value of 194.98 microg/mL. Cajaninstilbene acid (302.12 microg/mL) and orientin (316.21 microg/mL) showed more efficient radical-scavenging abilities than pinostrobin and vitexin. In the beta-carotene-linoleic acid test, the inhibition ratio (%) of the ethyl acetate fraction (94.13%+/-3.41%) was found to be the highest, being almost equal to the inhibition capacity of the positive control BHT (93.89%+/-1.45%) at 4 mg/mL. Pinostrobin (>500 microg/mL) and vitexin (>500 microg/mL) showed insignificant antioxidant activities compared with cajaninstilbene (321.53 microg/mL) and orientin (444.61 microg/mL). In general, the ethyl acetate fraction of the ethanol extract showed greater activity than the main compounds in both systems, such results might be attributed to the synergistic effects of the components. The antioxidant activities of all the tested samples were concentration-dependent. Based on the results obtained, we can conclude that the pigeonpea leaf extracts may be valuable natural antioxidant sources and are potentially applicable in both medicine and the healthy food industry. PMID:19305357

Wu, Nan; Fu, Kuang; Fu, Yu-Jie; Zu, Yuan-Gang; Chang, Fang-Rong; Chen, Yung-Husan; Liu, Xiao-Lei; Kong, Yu; Liu, Wei; Gu, Cheng-Bo

2009-01-01

23

Evaluation of the antifungal activity and modulation between Cajanus cajan (L.) Millsp. leaves and roots ethanolic extracts and conventional antifungals  

PubMed Central

Background: The use and investigation of natural products with antimicrobial activity from vegeral source have been reported by several researchers. Cajanus cajan (Fabaceae) is a multiple use specie mainly as human food. In popular medicine, diverse parts of the plant are used as sedative and to treat cough, hepatitis, and diabetes. Materials and Methods: This study shows the characterization of secondary metabolites present in ehtanolic extracts from leaves and roots of Cajanus cajan by phytochemical prospection. The evaluation of the antifungal activity was performed by the microdilution method, and from the subinhibitory concentrations (MIC 1/8) the modulatory activity of antifungical (fluconazole and ketoconazole) was analyzed by the direct contact assay against C. albicans ATCC40006, Candida krusei ATCC 6538 and Candida tropicalis ATCC 40042. Results: The results showed the presence of tannins, flavonoids, and alkaloids in both extracts as the clinically relevant antifungal activity. The modulatory potential is presented by the antifungal tested against yeasts. Conclusion: The extracts studied here have demonstrated to be a new therapeutic source to treat these microorganism-associated diseases. PMID:22701281

Brito, Samara A.; Rodrigues, Fabíola F. G.; Campos, Adriana R.; da Costa, José G. M.

2012-01-01

24

EFICIENCIA DE USO DE N-P-K EN UNA ASOCIACIÓN DE MAÍZ (Zea mays L.) Y QUINCHONCHO (Cajanus cajan L. Millspaugh) CON O SIN FERTILIZACIÓN  

Microsoft Academic Search

Use efficiency of N-P-K intercropping system of corn Zea mays L. and pigeonpea Cajanus cajan L. Millspaugh with or without fertilization An experiment was conducted in Quíbor Valley, Lara State, Venezuela, to evaluate the use efficiency of the elements N, P and K in plants of maize and pigeonpea sewed as monocrops or intercrops. Plants were grown without fertilizer application,

Ana Isabel Quiroz; Douglas Marín

2007-01-01

25

Laser-induced fluorescence ratios of Cajanus cajan L. under the stress of cadmium and its correlation with pigment content and pigment ratios.  

PubMed

Laser-induced fluorescence spectra were used to characterize the effect of cadmium on the pigment status of the leaves of Cajanus cajan L. Laser-induced fluorescence spectra of untreated as well as cadmium treated (0.01 mM, 0.10 mM, and 1.00 mM) Cajanus cajan L. were recorded using the 355 nm line of a Nd:YAG laser as the excitation source and a monochromator with an intensified charge-coupled device as a detector in the region 400-800 nm. The fluorescence intensity ratios (FIR) of control as well as treated Cajanus cajan L. have been calculated by evaluating curve fitted parameters using a Gaussian spectral function. In addition, some growth parameters, such as photosynthetic pigment content, were also measured. The 355 nm line of the laser-light-excited leaves not only showed a fluorescence emission in the red spectral region (650-800 nm), but also in the blue-green region (400-570 nm). The chlorophyll FIR F690/F740 strongly correlated with the photosynthetic pigment content (total chlorophyll and carotenoids) and its ratio. Consequently, a correlation was also seen between the ratio of the blue-green fluorescence F470/F540 and the photosynthetic pigment content. The results indicated that the plants treated with 0.01 mM of cadmium exhibited better growth, while higher concentrations of cadmium were hazardous for Cajanus cajan L. PMID:18416903

Maurya, Renu; Gopal, R

2008-04-01

26

Pigeonpea genomics initiative (PGI): an international effort to improve crop productivity of pigeonpea (Cajanus cajan L.)  

PubMed Central

Pigeonpea (Cajanus cajan), an important food legume crop in the semi-arid regions of the world and the second most important pulse crop in India, has an average crop productivity of 780 kg/ha. The relatively low crop yields may be attributed to non-availability of improved cultivars, poor crop husbandry and exposure to a number of biotic and abiotic stresses in pigeonpea growing regions. Narrow genetic diversity in cultivated germplasm has further hampered the effective utilization of conventional breeding as well as development and utilization of genomic tools, resulting in pigeonpea being often referred to as an ‘orphan crop legume’. To enable genomics-assisted breeding in this crop, the pigeonpea genomics initiative (PGI) was initiated in late 2006 with funding from Indian Council of Agricultural Research under the umbrella of Indo-US agricultural knowledge initiative, which was further expanded with financial support from the US National Science Foundation’s Plant Genome Research Program and the Generation Challenge Program. As a result of the PGI, the last 3 years have witnessed significant progress in development of both genetic as well as genomic resources in this crop through effective collaborations and coordination of genomics activities across several institutes and countries. For instance, 25 mapping populations segregating for a number of biotic and abiotic stresses have been developed or are under development. An 11X-genome coverage bacterial artificial chromosome (BAC) library comprising of 69,120 clones have been developed of which 50,000 clones were end sequenced to generate 87,590 BAC-end sequences (BESs). About 10,000 expressed sequence tags (ESTs) from Sanger sequencing and ca. 2 million short ESTs by 454/FLX sequencing have been generated. A variety of molecular markers have been developed from BESs, microsatellite or simple sequence repeat (SSR)-enriched libraries and mining of ESTs and genomic amplicon sequencing. Of about 21,000 SSRs identified, 6,698 SSRs are under analysis along with 670 orthologous genes using a GoldenGate SNP (single nucleotide polymorphism) genotyping platform, with large scale SNP discovery using Solexa, a next generation sequencing technology, is in progress. Similarly a diversity array technology array comprising of ca. 15,000 features has been developed. In addition, >600 unique nucleotide binding site (NBS) domain containing members of the NBS-leucine rich repeat disease resistance homologs were cloned in pigeonpea; 960 BACs containing these sequences were identified by filter hybridization, BES physical maps developed using high information content fingerprinting. To enrich the genomic resources further, sequenced soybean genome is being analyzed to establish the anchor points between pigeonpea and soybean genomes. In addition, Solexa sequencing is being used to explore the feasibility of generating whole genome sequence. In summary, the collaborative efforts of several research groups under the umbrella of PGI are making significant progress in improving molecular tools in pigeonpea and should significantly benefit pigeonpea genetics and breeding. As these efforts come to fruition, and expanded (depending on funding), pigeonpea would move from an ‘orphan legume crop’ to one where genomics-assisted breeding approaches for a sustainable crop improvement are routine. PMID:20976284

Penmetsa, R. V.; Dutta, S.; Kulwal, P. L.; Saxena, R. K.; Datta, S.; Sharma, T. R.; Rosen, B.; Carrasquilla-Garcia, N.; Farmer, A. D.; Dubey, A.; Saxena, K. B.; Gao, J.; Fakrudin, B.; Singh, M. N.; Singh, B. P.; Wanjari, K. B.; Yuan, M.; Srivastava, R. K.; Kilian, A.; Upadhyaya, H. D.; Mallikarjuna, N.; Town, C. D.; Bruening, G. E.; He, G.; May, G. D.; McCombie, R.; Jackson, S. A.; Singh, N. K.; Cook, D. R.

2009-01-01

27

Pigeonpea genomics initiative (PGI): an international effort to improve crop productivity of pigeonpea (Cajanus cajan L.).  

PubMed

Pigeonpea (Cajanus cajan), an important food legume crop in the semi-arid regions of the world and the second most important pulse crop in India, has an average crop productivity of 780 kg/ha. The relatively low crop yields may be attributed to non-availability of improved cultivars, poor crop husbandry and exposure to a number of biotic and abiotic stresses in pigeonpea growing regions. Narrow genetic diversity in cultivated germplasm has further hampered the effective utilization of conventional breeding as well as development and utilization of genomic tools, resulting in pigeonpea being often referred to as an 'orphan crop legume'. To enable genomics-assisted breeding in this crop, the pigeonpea genomics initiative (PGI) was initiated in late 2006 with funding from Indian Council of Agricultural Research under the umbrella of Indo-US agricultural knowledge initiative, which was further expanded with financial support from the US National Science Foundation's Plant Genome Research Program and the Generation Challenge Program. As a result of the PGI, the last 3 years have witnessed significant progress in development of both genetic as well as genomic resources in this crop through effective collaborations and coordination of genomics activities across several institutes and countries. For instance, 25 mapping populations segregating for a number of biotic and abiotic stresses have been developed or are under development. An 11X-genome coverage bacterial artificial chromosome (BAC) library comprising of 69,120 clones have been developed of which 50,000 clones were end sequenced to generate 87,590 BAC-end sequences (BESs). About 10,000 expressed sequence tags (ESTs) from Sanger sequencing and ca. 2 million short ESTs by 454/FLX sequencing have been generated. A variety of molecular markers have been developed from BESs, microsatellite or simple sequence repeat (SSR)-enriched libraries and mining of ESTs and genomic amplicon sequencing. Of about 21,000 SSRs identified, 6,698 SSRs are under analysis along with 670 orthologous genes using a GoldenGate SNP (single nucleotide polymorphism) genotyping platform, with large scale SNP discovery using Solexa, a next generation sequencing technology, is in progress. Similarly a diversity array technology array comprising of ca. 15,000 features has been developed. In addition, >600 unique nucleotide binding site (NBS) domain containing members of the NBS-leucine rich repeat disease resistance homologs were cloned in pigeonpea; 960 BACs containing these sequences were identified by filter hybridization, BES physical maps developed using high information content fingerprinting. To enrich the genomic resources further, sequenced soybean genome is being analyzed to establish the anchor points between pigeonpea and soybean genomes. In addition, Solexa sequencing is being used to explore the feasibility of generating whole genome sequence. In summary, the collaborative efforts of several research groups under the umbrella of PGI are making significant progress in improving molecular tools in pigeonpea and should significantly benefit pigeonpea genetics and breeding. As these efforts come to fruition, and expanded (depending on funding), pigeonpea would move from an 'orphan legume crop' to one where genomics-assisted breeding approaches for a sustainable crop improvement are routine. PMID:20976284

Varshney, R K; Penmetsa, R V; Dutta, S; Kulwal, P L; Saxena, R K; Datta, S; Sharma, T R; Rosen, B; Carrasquilla-Garcia, N; Farmer, A D; Dubey, A; Saxena, K B; Gao, J; Fakrudin, B; Singh, M N; Singh, B P; Wanjari, K B; Yuan, M; Srivastava, R K; Kilian, A; Upadhyaya, H D; Mallikarjuna, N; Town, C D; Bruening, G E; He, G; May, G D; McCombie, R; Jackson, S A; Singh, N K; Cook, D R

2010-10-01

28

Anti-oxidative protection against iron overload-induced liver damage in mice by Cajanus cajan (L.) Millsp. leaf extract.  

PubMed

In view of the contribution of iron deposition in the oxidative pathologic process of liver disease, the potential of 70% methanolic extract of C. cajan leaf (CLME) towards antioxidative protection against iron-overload-induced liver damage in mice has been investigated. DPPH radical scavenging and protection of Fenton reaction induced DNA damage was conducted in vitro. Post oral administration of CLME to iron overloaded mice, the levels of antioxidant and serum enzymes, hepatic iron, serum ferritin, lipid peroxidation, and protein carbonyl and hydroxyproline contents were measured, in comparison to deferasirox treated mice. Oral treatment of the plant extract effectively lowered the elevated levels of liver iron, lipid peroxidation, protein carbonyl and hydroxyproline. There was notable increment in the dropped levels of hepatic antioxidants. The dosage of the plant extract not only made the levels of serum enzymes approach normal value, but also counteracted the overwhelmed serum ferritin level. The in vitro studies indicated potential antioxidant activity of CLME. The histopathological observations also substantiated the ameliorative function of the plant extract. Accordingly, it is suggested that Cajanus cajan leaf can be a useful herbal remedy to suppress oxidative damage caused by iron overload. PMID:23923610

Sarkar, Rhitajit; Hazra, Bibhabasu; Mandal, Nripendranath

2013-02-01

29

[Evaluation of traditional medicine: effects of Cajanus cajan L. and of Cassia fistula L. on carbohydrate metabolism in mice].  

PubMed

The authors report the results of pharmacologic evaluation of two medicinal plants: Cajanus cajan (L.) Millsp and Cassia fistula, which are used in Panamanian folk medicine for the treatment of diabetes. It was found that the aqueous fraction of the leaves and stems of C. cajan did not produce any hypo blood sugar effect in normoglycemic mice; instead, it produced a hyperglycemia with doses of 500 mg/kg and 1000 mg/kg (p less than 0.001). Only with a dose of 300 mg/kg a short lived decrease in the glycemia was seen at one hour. On the contrary, the folk use of the leaves of C. fistula for diabetes seems to have some correlation with the popular frek use. The aqueous fraction produced a significant decrease in the glycemia (p less than 0.001) at 4 and 24 hours with doses of 300 and 500 mg/kg, and at one and four hours after the dose of 1000 mg/kg (p less than 0.001). In the glucose tolerance test, the aqueous fraction of C. cajan produced a significant and short lasting decrease (p less than 0.05) with the dose of 300 mg/kg, while the dose of 500 mg/kg did at 0.25, 0.5 and 1 hour (p less than 0.01). The 1000 mg/kg dose produced a significant increase in glucose tolerance at 1 and 2 hours (p less than 0.05). The aqueous fraction of C. fistula produced a significant decrease (p less than 0.05) with the dose of 500 mg/kg at 0.25 and 0.5 hours. The 1000 mg/kg dose produced a significant increase (p less than 0.001) at 0.25 and 2 hours.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:2024054

Espósito Avella, M; Díaz, A; de Gracia, I; de Tello, R; Gupta, M P

1991-01-01

30

Effect of cadmium and nickel on photosynthesis and the enzymes of the photosynthetic carbon reduction cycle in pigeonpea (Cajanus cajan L.)  

Microsoft Academic Search

The effect of Cd2+ and Ni2+ on the rate of photosynthesis and activities of key enzymes of the photosynthetic carbon reduction cycle was examined in leaves from pigeonpea (Cajanus cajan L., cv. UPAS-120) grown in nitrogen free sand culture. Two different concentrations of Cd2+ and Ni2+ were applied through the rooting medium at two growth stages. The application of Cd2+

I. S. Sheoran; H. R. Singal; Randhir Singh

1990-01-01

31

Symbiotic effectiveness of Hup + Rhizobium , VAM fungi and phosphorus levels in relation to nitrogen fixation and plant growth of Cajanus cajan  

Microsoft Academic Search

Effect of hydrogen uptake positive (Hup+) strain ofRhizobium sp. (pigeon pea) and VAM fungus (Glomus fasciculatum) was studied on the symbiotic parameters of pigeon pea (Cajanus cajan) cv. AL-15 at various levels of phosphorus. The Hup+\\u000a Rhizobium strain showed more nodulation, plant biomass and plant nitrogen content than its Hup? counterpart. VAM infection in pigeon pea roots helped in translocating

G. K. Sekhon; R. P. Gupta; M. S. Pandher; J. K. Arora

1992-01-01

32

Evidence for Cytokinin Involvement in Rhizobium (IC3342)-Induced Leaf Curl Syndrome of Pigeonpea (Cajanus cajan Millsp.).  

PubMed

A uniquely abnormal shoot development (shoot tip-bending, leaf curling, release from apical dominance, and stunted growth) in pigeonpea (Cajanus cajan Millsp) induced by a nodulating Rhizobium strain, IC3342, is thought to be due to a hormonal imbalance. Amaranthus betacyanin bioassay indicated that xylem exudate and leaf extracts from pigeonpea plants with Rhizobium-induced leaf curl symptoms contained high concentrations of cytokinin relative to those in normal plants. Radioimmunoassay (RIA) of samples purified with high performance liquid chromatography revealed that zeatin riboside (ZR) and dihydrozeatin riboside (DZR) concentrations in xylem sap from plants with leaf curl symptoms were 7 to 9 times higher than those in the sap from symptomless, nodulated plants. The sap from symptomless plants nodulated by a Curl(-) mutant had ZR and DZR concentrations comparable to those in the normal plant sap. RIA indicated that the respective concentrations of zeatin and N(6)-isopenteny-ladenine in culture filtrates of the curl-inducing strain IC3342 were 26 and 8 times higher than those in filtrates of a related normal nodulating strain (ANU240). Gas chromatographic-mass spectrometric analyses revealed similar differences. Gene-specific hybridization and sequence comparisons failed to detect any homology of IC3342 DNA to Agrobacterium tumefaciens or Pseudomonas savastanoi genetic loci encoding enzymes involved in cytokinin biosynthesis. PMID:16668086

Upadhyaya, N M; Parker, C W; Letham, D S; Scott, K F; Dart, P J

1991-04-01

33

Evidence for Cytokinin Involvement in Rhizobium (IC3342)-Induced Leaf Curl Syndrome of Pigeonpea (Cajanus cajan Millsp.)  

PubMed Central

A uniquely abnormal shoot development (shoot tip-bending, leaf curling, release from apical dominance, and stunted growth) in pigeonpea (Cajanus cajan Millsp) induced by a nodulating Rhizobium strain, IC3342, is thought to be due to a hormonal imbalance. Amaranthus betacyanin bioassay indicated that xylem exudate and leaf extracts from pigeonpea plants with Rhizobium-induced leaf curl symptoms contained high concentrations of cytokinin relative to those in normal plants. Radioimmunoassay (RIA) of samples purified with high performance liquid chromatography revealed that zeatin riboside (ZR) and dihydrozeatin riboside (DZR) concentrations in xylem sap from plants with leaf curl symptoms were 7 to 9 times higher than those in the sap from symptomless, nodulated plants. The sap from symptomless plants nodulated by a Curl? mutant had ZR and DZR concentrations comparable to those in the normal plant sap. RIA indicated that the respective concentrations of zeatin and N6-isopenteny-ladenine in culture filtrates of the curl-inducing strain IC3342 were 26 and 8 times higher than those in filtrates of a related normal nodulating strain (ANU240). Gas chromatographic-mass spectrometric analyses revealed similar differences. Gene-specific hybridization and sequence comparisons failed to detect any homology of IC3342 DNA to Agrobacterium tumefaciens or Pseudomonas savastanoi genetic loci encoding enzymes involved in cytokinin biosynthesis. PMID:16668086

Upadhyaya, Narayana M.; Parker, C. William; Letham, David S.; Scott, Kieran F.; Dart, Peter J.

1991-01-01

34

An efficient protocol for shoot regeneration and genetic transformation of pigeonpea [ Cajanus cajan (L) Millsp] using leaf explants.  

PubMed

A protocol for efficient plant regeneration from leaf explants of pigeonpea [ Cajanus cajan (L.) Millsp.] was developed for the production of transgenic plants. Leaf explants from 4- to 5-day-old in vitro raised seedlings were most efficient in producing multiple adventitious shoots in 90% of the explants on shoot induction medium [Murashige and Skoog (MS) medium +5.0 microM benzyladenine +5.0 microM kinetin]. Shoot buds originated from the petiolar cut end of the explants and elongated rapidly on medium containing 0.58 microM gibberellic acid. Over 80% of the elongated shoots rooted well on MS medium containing 11.42 microM indole-3-acetic acid and were transplanted with 100% success. The procedure reported here is very simple, efficient and reproducible, and is applicable across diverse genotypes of pigeonpea. The usefulness of this system for further studies on the genetic transformation of pigeonpea has been demonstrated in biolistics-mediated gene transfer by using nptII and uidA as marker genes, where 50% of the selected plants showed gene integration and expression. PMID:12836001

Dayal, S; Lavanya, M; Devi, P; Sharma, K K

2003-07-01

35

Constituents of Cajanus cajan (L.) Millsp., Moringa oleifera Lam., Heliotropium indicum L. and Bidens pilosa L. from Nigeria.  

PubMed

The essential oils of four plant species from Nigeria have been extracted by hydrodistillation and analyzed by GC and GC-MS. The oils of Cajanus cajan were comprised of sesquiterpenes (92.5%, 81.2% and 94.3% respectively in the leaves, stem and seeds). The major compounds identified were alpha-himachalene (9.0-11.5%), beta-himachalene (8.0-11.0%), gamma-himachalene (6.9-8.1%), alpha-humulene (7.1-8.7%) and alpha-copaene (4.5-5.6%). However, monoterpenoid compounds (81.8%) dominated the oil of Moringa oleifera with an abundance of alpha-phellandrene (25.2%) and p-cymene (24.9%). On the other hand, aldehydes (52.8%) occurred in the highest amount in Heliotropium indicum, represented by phenylacetaldehyde (22.2%), (E)-2-nonenal (8.3%) and (E, Z)-2-nonadienal (6.1%), with a significant quantity of hexahydrofarnesylacetone (8.4%). The leaf and stem oils of Bidens pilosa were dominated by sesquiterpenes (82.3% and 59.3%, respectively). The main compounds in the leaf oil were caryophyllene oxide (37.0%), beta-caryophyllene (10.5%) and humulene oxide (6.0%), while the stem oils had an abundance of hexahydrofarnesyl acetone (13.4%), delta-cadinene (12.0%) and caryophyllene oxide (11.0%). The observed chemical patterns differ considerably from previous investigations. PMID:19476009

Ogunbinu, Akinola O; Flamini, Guido; Cioni, Pier L; Adebayo, Muritala A; Ogunwande, Isiaka A

2009-04-01

36

Growth and Nutrient Utilization in Kids Fed Expander-extruded Complete Feed Pellets Containing Red Gram (Cajanus cajan) Straw  

PubMed Central

A growth and digestibility study was conducted using Osmanabadi goat male kids by feeding complete diets in the form of mash or expander extruded pellets containing different levels of red gram (Cajanus cajan) straw (RGS). Two iso-nitrogenous complete diets were prepared by incorporating RGS at 35% and 50% levels. Half the quantity of each complete mash feed was then converted into pellets through expander extruder processing. Thirty two kids of 4 to 5 months age were divided into four groups of eight each and were fed for 150 d with four experimental diets (T1: mash with 35% RGS, T2: mash with 50% RGS, T3: pellets with 35% RGS and T4: pellets with 50% RGS). Pelleting of complete diets significantly (p<0.001) increased the voluntary feed intake (671.45 vs 426.28 g/d) at both levels of RGS in the feeds. Average daily gain (ADG, g/d) also increased significantly (p<0.001) from 48.79 in kids fed mash diet to 71.29 in those fed with pelleted diets. Feed conversion efficiency (dry matter (DM) intake: weight gain) was comparable among all the treatment groups. Digestibility of nutrients was not affected by pelleting of the feeds whereas, increasing the level of inclusion of RGS in feeds from 35% to 50% decreased (p<0.05) the digestibility of DM and crude protein (CP) resulting in lower (p<0.001) metabolizable energy (ME) content (MJ/kg DM) in feeds with 50% RGS (7.93 vs 8.75). Daily intake (MJ/kg BW?0.75) of ME decreased (p<0.05) in feeds containing 50% RGS while pelleting of feeds increased (p<0.05) the intake of DM, CP, digestible crude protein (DCP) and ME. It is inferred that expander extruder pelleting can efficiently utilize RGS up to 50% level in complete diets for growing goat kids. PMID:25049537

Reddy, P. B.; Reddy, T. J.; Reddy, Y. R.

2012-01-01

37

Expression of hemagglutinin protein of Rinderpest virus in transgenic pigeon pea [Cajanus cajan (L.) Millsp.] plants.  

PubMed

Rinderpest virus is the causative agent of a devastating, often fatal disease in wild and domestic bovids that is endemic in Africa, the Middle East and South Asia. The existing live attenuated vaccine is heat-labile, and thus there is a need for the development of new strategies for vaccination. This paper reports the development of transgenic pigeon pea [ Cajanus cajun (L.) Millsp.] expressing one of the protective antigens, the hemagglutinin (H) protein of Rinderpest virus. A 2-kb fragment containing the coding region of the H protein was cloned into pBI121 and mobilized into Agrobacterium tumefaciensstrain EHA105. Embryonic axes and cotyledonary nodes from germinated seeds of pigeon pea were used for transformation. The presence of the transgene in transgenic plants was confirmed by Southern blots, and the specific transcription of the marker gene in the plants was demonstrated by reverse transcription-polymerase chain reaction. Integration of the H gene into the pigeon pea genome was confirmed by Southern hybridization. The expression of the H protein in the transgenic lines was confirmed by Western blot analysis using a polyclonal monospecific antibody to the H protein. The highest level of expression of the hemagglutinin protein in leaves of pigeon pea was 0.49% of the total soluble protein. The transgenic plants were fertile and the transgene expressed in the progeny. PMID:12789415

Satyavathi, V V; Prasad, V; Khandelwal, Abha; Shaila, M S; Sita, G Lakshmi

2003-03-01

38

The first set of EST resource for gene discovery and marker development in pigeonpea (Cajanus cajan L.)  

PubMed Central

Background Pigeonpea (Cajanus cajan (L.) Millsp) is one of the major grain legume crops of the tropics and subtropics, but biotic stresses [Fusarium wilt (FW), sterility mosaic disease (SMD), etc.] are serious challenges for sustainable crop production. Modern genomic tools such as molecular markers and candidate genes associated with resistance to these stresses offer the possibility of facilitating pigeonpea breeding for improving biotic stress resistance. Availability of limited genomic resources, however, is a serious bottleneck to undertake molecular breeding in pigeonpea to develop superior genotypes with enhanced resistance to above mentioned biotic stresses. With an objective of enhancing genomic resources in pigeonpea, this study reports generation and analysis of comprehensive resource of FW- and SMD- responsive expressed sequence tags (ESTs). Results A total of 16 cDNA libraries were constructed from four pigeonpea genotypes that are resistant and susceptible to FW ('ICPL 20102' and 'ICP 2376') and SMD ('ICP 7035' and 'TTB 7') and a total of 9,888 (9,468 high quality) ESTs were generated and deposited in dbEST of GenBank under accession numbers GR463974 to GR473857 and GR958228 to GR958231. Clustering and assembly analyses of these ESTs resulted into 4,557 unique sequences (unigenes) including 697 contigs and 3,860 singletons. BLASTN analysis of 4,557 unigenes showed a significant identity with ESTs of different legumes (23.2-60.3%), rice (28.3%), Arabidopsis (33.7%) and poplar (35.4%). As expected, pigeonpea ESTs are more closely related to soybean (60.3%) and cowpea ESTs (43.6%) than other plant ESTs. Similarly, BLASTX similarity results showed that only 1,603 (35.1%) out of 4,557 total unigenes correspond to known proteins in the UniProt database (? 1E-08). Functional categorization of the annotated unigenes sequences showed that 153 (3.3%) genes were assigned to cellular component category, 132 (2.8%) to biological process, and 132 (2.8%) in molecular function. Further, 19 genes were identified differentially expressed between FW- responsive genotypes and 20 between SMD- responsive genotypes. Generated ESTs were compiled together with 908 ESTs available in public domain, at the time of analysis, and a set of 5,085 unigenes were defined that were used for identification of molecular markers in pigeonpea. For instance, 3,583 simple sequence repeat (SSR) motifs were identified in 1,365 unigenes and 383 primer pairs were designed. Assessment of a set of 84 primer pairs on 40 elite pigeonpea lines showed polymorphism with 15 (28.8%) markers with an average of four alleles per marker and an average polymorphic information content (PIC) value of 0.40. Similarly, in silico mining of 133 contigs with ? 5 sequences detected 102 single nucleotide polymorphisms (SNPs) in 37 contigs. As an example, a set of 10 contigs were used for confirming in silico predicted SNPs in a set of four genotypes using wet lab experiments. Occurrence of SNPs were confirmed for all the 6 contigs for which scorable and sequenceable amplicons were generated. PCR amplicons were not obtained in case of 4 contigs. Recognition sites for restriction enzymes were identified for 102 SNPs in 37 contigs that indicates possibility of assaying SNPs in 37 genes using cleaved amplified polymorphic sequences (CAPS) assay. Conclusion The pigeonpea EST dataset generated here provides a transcriptomic resource for gene discovery and development of functional markers associated with biotic stress resistance. Sequence analyses of this dataset have showed conservation of a considerable number of pigeonpea transcripts across legume and model plant species analysed as well as some putative pigeonpea specific genes. Validation of identified biotic stress responsive genes should provide candidate genes for allele mining as well as candidate markers for molecular breeding. PMID:20222972

2010-01-01

39

Chemical composition of the SFE-CO extracts from Cajanus cajan (L.) Huth and their antimicrobial activity in vitro and in vivo.  

PubMed

The in vitro and in vivo antimicrobial activities of SFE-CO?(supercritical fluid extraction) extracts and ethanol extracts from Cajanus cajan (L.) Huth were investigated. The flavonoid compounds orientin, vitexin, isovitexin, pinostrobin and the stilbene cajaninstilbene acid were detected in SFE-CO? extracts by HPLC-DAD. In vitro antimicrobial activities of the extracts were evaluated against eight microbial strains (the bacteria Staphylococcus epidermidis, Staphylococcus aureus, Bacillus subtilis, Proteus vulgaris, Pseudomonas aeruginosa, Escherichia coli; and the fungi Aspergillus niger and Candida albicans). A marked inhibitory effect of the SFE extracts was observed against Staphylococcus epidermidis, Staphylococcus aureus and Bacillus subtilis. The IC(50) of SFE-CO? extracts ranged from 0.0557 mg/ml to 0.0689 mg/ml consisting of cancer (MCF-7 (0.0557 mg/ml)) as well as non-cancer (BHK-21 (0.0641 mg/ml), RAW264.7 (0.0689 mg/ml) and Vero (0.0625 mg/ml)) cells. Flow cytometry (FCM) was used to analyze death rate of the most sensitive strain (Staphylococcus aureus) caused by the SFE extracts. Additionally, the whole cell proteins of Staphylococcus aureus were analyzed by SDS-PAGE to detect if there were changes in protein patterns. In vivo antimicrobial activity was studies in mice that had been inoculated with Staphylococcus aureus. The potential mechanism of antimicrobial activity in vivo was studied by histopathology. PMID:20576412

Zu, Yuan-gang; Liu, Xiao-lei; Fu, Yu-jie; Wu, Nan; Kong, Yu; Wink, Michael

2010-12-01

40

Comparative study of antidiabetic activity of Cajanus cajan and Tamarindus indica in alloxan-induced diabetic mice with a reference to in vitro antioxidant activity  

PubMed Central

Background: Oxidative stress not only develops complications in diabetic (type 1 and type 2) but also contributes to beta cell destruction in type 2 diabetes in insulin resistance hyperglycemia. Glucose control plays an important role in the pro-oxidant/antioxidant balance. Some antidiabetic agents may by themselves have antioxidant properties independently of their role on glucose control. Objective: The present investigation draws a comparison of the protective antioxidant activity, total phenol content and the antihyperglycemic activity of the methanolic extract of Cajanus cajan root (MCC) and Tamarindus indica seeds (MTI). Materials and Methods: Antidiabetic potentials of the plant extracts were evaluated in alloxan-induced diabetic Swiss albino mice. The plant extracts at the doses of 200 and 400 mg/kg body weight was orally administered for glucose tolerance test during 1-hour study and hypoglycemic effect during 5-day study period in comparison with reference drug Metformin HCl (50 mg/kg). In vitro antioxidant potential of MCC and MTI was investigated by using 1, 1- diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging activity at 517 nm. Total phenolic content, total antioxidant capacity and reducing power activity was also assayed. Results: There was a significant decrease in fasting serum glucose level (P < 0.001), reduction in blood glucose level (P < 0.001) in 5-days study, observed in the alloxan-induced diabetic mice. The reduction efficacy of blood glucose level of both the extracts is proportional to their dose but MCC is more potent than MTI. Antioxidant study and quantification of phenolic compound of both the extracts revealed that they have high antioxidant capacity. Conclusion: These studies showed that MCC and MTI have both hypoglycemic and antioxidant potential but MCC is more potent than MTI. The present study suggests that both MCC and MTI could be used in managing oxidative stress. PMID:24761124

Nahar, Laizuman; Nasrin, Fatema; Zahan, Ronok; Haque, Anamul; Haque, Ekramul; Mosaddik, Ashik

2014-01-01

41

Effects of water extract of Cajanus cajan leaves on the osteogenic and adipogenic differentiation of mouse primary bone marrow stromal cells and the adipocytic trans-differentiation of mouse primary osteoblasts.  

PubMed

The effects of water extract of Cajanus cajan (Linn.) Millsp. (Leguminosae) leaves (WECML) on the osteogenic and adipogenic differentiation of mouse primary bone marrow stromal cells (BMSCs) and the adipocytic trans-differentiation of mouse primary osteoblasts (OBs) were studied. The results indicated that WECML promoted the proliferation of BMSCs and OBs at most concentrations. WECML promoted the osteogenic differentiation and formation of mineralized matrix nodules of BMSCs at concentrations of 0.1, 1, and 10 microg/mL, but inhibited the osteogenic differentiation and formation of mineralized matrix nodules of BMSCs at concentration of 0.01 microg/mL. WECML inhibited the adipogenic differentiation of BMSCs and adipocytic trans-differentiation of OBs at concentrations of 0.001, 0.1, 1, 10, and 100 microg/mL, but had no effects at concentration of 0.01 microg/mL. The results suggest that WECML has protective effects on bone and these protective effects may be mediated by decreasing adipocytic cell formation from BMSCs, which may promote the proliferation, differentiation, and mineralization function of OBs. The defined active ingredients in the WECML and the active mechanism need to be further studied. PMID:20645761

Zhang, Jinchao; Liu, Cuilian; Sun, Jing; Liu, Dandan; Wang, Peng

2010-01-01

42

Comparison of N2 Fixation and Yields in Cajanus cajan between Hydrogenase-Positive and Hydrogenase-Negative Rhizobia by In Situ Acetylene Reduction Assays and Direct 15N Partitioning 1  

PubMed Central

Pigeon peas [Cajanus cajan (L.) Millsp.] were grown in soil columns containing 15N-enriched organic matter. Seasonal N2 fixation activity was determined by periodically assaying plants for reduction of C2H2. N2 fixation rose sharply from the first assay period at 51 days after planting to a peak of activity between floral initiation and fruit set. N2 fixation (acetylene reduction) activity dropped concomitantly with pod maturation but recovered after pod harvests. Analysis of 15N content of plant shoots revealed that approximately 91 to 94% of plant N was derived from N2 fixation. The effect of inoculation with hydrogenase-positive and hydrogenase-negative rhizobia was examined. Pigeon peas inoculated with strain P132 (hydrogenase-positive) yielded significantly more total shoot N than other inoculated or uninoculated treatments. However, two other hydrogenase-positive strains did not yield significantly more total shoot N than a hydrogenase-negative strain. The extent of nodulation by inoculum strains compared to indigenous rhizobia was determined by typing nodules according to intrinsic antibiotic resistance of the inoculum strains. The inoculum strains were detected in almost all typed nodules of inoculated plants. Gas samples were taken from soil columns several times during the growth cycle of the plants. H2 was never detected, even in columns containing pigeon peas inoculated with hydrogenase-negative rhizobia. This was attributed to H2 consumption by soil bacteria. Estimation of N2 fixation by acetylene reduction activity was closest to the direct 15N method when ethylene concentrations in the gas headspace (between the column lid and soil surface) were extrapolated to include the soil pore space as opposed solely to measurement in the headspace. There was an 8-fold difference between the two acetylene reduction assay methods of estimation. Based on a planting density of 15,000 plants per hectare, the direct 15N fixation rates ranged from 67 (noninoculated) to 134 kilograms per hectare, while grain yields ranged from 540 to 825 kilograms per hectare. Grain yields were not increased with N fertilizer. PMID:16663148

La Favre, Jeffrey S.; Focht, Dennis D.

1983-01-01

43

Factors affecting the protein quality of pigeonpea ( Cajanus cajan L.)  

Microsoft Academic Search

Pigeonpea occupies an important place in human nutrition as a source of dietary proteins in several countries. Some of the important factors that affect the protein quality of pigeonpea have been reviewed and summarised in this paper. Among important food legumes, pigeonpea contained the lowest amount of limiting sulphur amino acids, methionine and cystine implicating the importance of these amino

U. SINGtt; B. O. Eggum

1984-01-01

44

Cytoplasmic Male Sterility-Associated Chimeric Open Reading Frames Identified by Mitochondrial Genome Sequencing of Four Cajanus Genotypes  

PubMed Central

The hybrid pigeonpea (Cajanus cajan) breeding technology based on cytoplasmic male sterility (CMS) is currently unique among legumes and displays major potential for yield increase. CMS is defined as a condition in which a plant is unable to produce functional pollen grains. The novel chimeric open reading frames (ORFs) produced as a results of mitochondrial genome rearrangements are considered to be the main cause of CMS. To identify these CMS-related ORFs in pigeonpea, we sequenced the mitochondrial genomes of three C. cajan lines (the male-sterile line ICPA 2039, the maintainer line ICPB 2039, and the hybrid line ICPH 2433) and of the wild relative (Cajanus cajanifolius ICPW 29). A single, circular-mapping molecule of length 545.7 kb was assembled and annotated for the ICPA 2039 line. Sequence annotation predicted 51 genes, including 34 protein-coding and 17 RNA genes. Comparison of the mitochondrial genomes from different Cajanus genotypes identified 31 ORFs, which differ between lines within which CMS is present or absent. Among these chimeric ORFs, 13 were identified by comparison of the related male-sterile and maintainer lines. These ORFs display features that are known to trigger CMS in other plant species and to represent the most promising candidates for CMS-related mitochondrial rearrangements in pigeonpea. PMID:23792890

Tuteja, Reetu; Saxena, Rachit K.; Davila, Jaime; Shah, Trushar; Chen, Wenbin; Xiao, Yong-Li; Fan, Guangyi; Saxena, K. B.; Alverson, Andrew J.; Spillane, Charles; Town, Christopher; Varshney, Rajeev K.

2013-01-01

45

Genetic Diversity and Demographic History of Cajanus spp. Illustrated from Genome-Wide SNPs  

PubMed Central

Understanding genetic structure of Cajanus spp. is essential for achieving genetic improvement by quantitative trait loci (QTL) mapping or association studies and use of selected markers through genomic assisted breeding and genomic selection. After developing a comprehensive set of 1,616 single nucleotide polymorphism (SNPs) and their conversion into cost effective KASPar assays for pigeonpea (Cajanus cajan), we studied levels of genetic variability both within and between diverse set of Cajanus lines including 56 breeding lines, 21 landraces and 107 accessions from 18 wild species. These results revealed a high frequency of polymorphic SNPs and relatively high level of cross-species transferability. Indeed, 75.8% of successful SNP assays revealed polymorphism, and more than 95% of these assays could be successfully transferred to related wild species. To show regional patterns of variation, we used STRUCTURE and Analysis of Molecular Variance (AMOVA) to partition variance among hierarchical sets of landraces and wild species at either the continental scale or within India. STRUCTURE separated most of the domesticated germplasm from wild ecotypes, and separates Australian and Asian wild species as has been found previously. Among Indian regions and states within regions, we found 36% of the variation between regions, and 64% within landraces or wilds within states. The highest level of polymorphism in wild relatives and landraces was found in Madhya Pradesh and Andhra Pradesh provinces of India representing the centre of origin and domestication of pigeonpea respectively. PMID:24533111

Saxena, Rachit K.; von Wettberg, Eric; Upadhyaya, Hari D.; Sanchez, Vanessa; Songok, Serah; Saxena, Kulbhushan; Kimurto, Paul; Varshney, Rajeev K.

2014-01-01

46

The Potential of Pigeonpea (Cajanus cajan) for Producing Important Components of Renewable Energy and Agricultural Products  

NASA Astrophysics Data System (ADS)

In agricultural systems, sustainable crop production is critical in meeting both environmental requirements and the limitations of drought imposed by the effects of global warming. The inputs for crop production and end use of the products should determine the choice of a crop particularly in environments prone to droughts. The objective of this paper is to highlight why a multi-purpose grain legume such as pigeonpea is an ideal crop that can be utilized for producing renewable energy. Firstly, it is highly tolerant to drought and does not require additional soil moisture after the seedling growth stage. The deep tape root extracts moisture and nutrients from deep layers of the soil concomitantly allowing for efficient nutrient recycling. The piscidic acid which is exuded from the roots enhances the solubilization of phosphorus in order to make it available for plant uptake. Secondly, the grain of pigeonpea is suitable for both human food and feedstocks. The grain is rich in oil, vitamins, minerals and protein. The grain can also be used for producing biofuel. In many countries particularly in the developing world, the stover is used as fuel wood or building (roofing) material, thus alleviating pressure on forest products. The crop is grown without the application of inorganic fertilizers as it can fix atmospheric nitrogen symbiotically in its root nodules. Pigeonpea is also ratoonable, producing two or more harvests per season. In addition, it is grown in mixed cropping systems thus optimizing land use. In these regards, pigeonpea is sustainable and environmentally friendly choice for agricultural production of food and energy balance.

Gwata, E.

2012-04-01

47

Water used by grazed pigeon pea [Cajanus cajan(L) Millsp] in Oklahoma  

Technology Transfer Automated Retrieval System (TEKTRAN)

Water use by the warm-season annual pulse pigeon pea must be described to effectively use this legume as forage to support late-summer grazing by stocker cattle in the southern Great Plains (SGP). This study was conducted in central Oklahoma during 2008 to 2010 to quantify water and water use effici...

48

Genome wide in silico characterization of Dof gene families of pigeonpea (Cajanus cajan (L) Millsp.).  

PubMed

The DNA binding with One Finger (Dof) protein is a plant specific transcription factor involved in the regulation of wide range of processes. The analysis of whole genome sequence of pigeonpea has identified 38 putative Dof genes (CcDof) distributed on 8 chromosomes. A total of 17 out of 38 CcDof genes were found to be intronless. A comprehensive in silico characterization of CcDof gene family including the gene structure, chromosome location, protein motif, phylogeny, gene duplication and functional divergence has been attempted. The phylogenetic analysis resulted in 3 major clusters with closely related members in phylogenetic tree revealed common motif distribution. The in silico cis-regulatory element analysis revealed functional diversity with predominance of light responsive and stress responsive elements indicating the possibility of these CcDof genes to be associated with photoperiodic control and biotic and abiotic stress. The duplication pattern showed that tandem duplication is predominant over segmental duplication events. The comparative phylogenetic analysis of these Dof proteins along with 78 soybean, 36 Arabidopsis and 30 rice Dof proteins revealed 7 major clusters. Several groups of orthologs and paralogs were identified based on phylogenetic tree constructed. Our study provides useful information for functional characterization of CcDof genes. PMID:25344821

Malviya, N; Gupta, S; Singh, V K; Yadav, M K; Bisht, N C; Sarangi, B K; Yadav, D

2014-10-26

49

Phenotypic diversity and amylolytic activity of fast growing rhizobia from pigeonpea [Cajanus cajan (L.) Millsp.  

PubMed Central

This study evaluated 26 pigeonpea rhizobial isolates according to their cultural characteristics, intrinsic antibiotic resistance, salt and temperature tolerance, carbon source utilization and amylolytic activity. The cultural characterization showed that the majority of them presented the ability to acidify the YMA. Among the 27 isolates evaluated, 25 were able to grow when incubated at 42° C and 11 showed tolerance to 3% (w/v) of NaCl in YMA medium. The patterns of carbon sources utilization was very diverse among the isolates. It was observed the capacity of three strains to metabolize all the carbon sources evaluated and a total of 42% of the bacterial isolates was able to grow in the culture medium supplemented with at least, six carbon sources. The carbon sources mannitol (control) and sucrose were metabilized by all isolates evaluated. The profile of intrinsic resistance to antibiotics showed that the isolates were mostly resistant to streptomycin and ampicillin, but susceptible to kanamycin and chloranphenicol. High amylolytic activity of, at least, four isolates was also demonstrated, especially for isolated 47.3b, which showed the highest enzymatic index. These results indicate the metabolic versatility of the pigeonpea rhizobia, and indicates the isolate 47.3b to further studies regarding the amylase production and characterization. PMID:24031992

Júnior, Paulo Ivan Fernandes; de Lima, Andréa Aparecida; Passos, Samuel Ribeiro; Tuão Gava, Carlos Alberto; de Oliveira, Paulo Jansen; Rumjanek, Norma Gouvêa; Xavier, Gustavo Ribeiro

2012-01-01

50

Draft genome sequence of pigeonpea (Cajanus cajan), an orphan legume crop of resource-poor farmers.  

PubMed

Pigeonpea is an important legume food crop grown primarily by smallholder farmers in many semi-arid tropical regions of the world. We used the Illumina next-generation sequencing platform to generate 237.2 Gb of sequence, which along with Sanger-based bacterial artificial chromosome end sequences and a genetic map, we assembled into scaffolds representing 72.7% (605.78 Mb) of the 833.07 Mb pigeonpea genome. Genome analysis predicted 48,680 genes for pigeonpea and also showed the potential role that certain gene families, for example, drought tolerance-related genes, have played throughout the domestication of pigeonpea and the evolution of its ancestors. Although we found a few segmental duplication events, we did not observe the recent genome-wide duplication events observed in soybean. This reference genome sequence will facilitate the identification of the genetic basis of agronomically important traits, and accelerate the development of improved pigeonpea varieties that could improve food security in many developing countries. PMID:22057054

Varshney, Rajeev K; Chen, Wenbin; Li, Yupeng; Bharti, Arvind K; Saxena, Rachit K; Schlueter, Jessica A; Donoghue, Mark T A; Azam, Sarwar; Fan, Guangyi; Whaley, Adam M; Farmer, Andrew D; Sheridan, Jaime; Iwata, Aiko; Tuteja, Reetu; Penmetsa, R Varma; Wu, Wei; Upadhyaya, Hari D; Yang, Shiaw-Pyng; Shah, Trushar; Saxena, K B; Michael, Todd; McCombie, W Richard; Yang, Bicheng; Zhang, Gengyun; Yang, Huanming; Wang, Jun; Spillane, Charles; Cook, Douglas R; May, Gregory D; Xu, Xun; Jackson, Scott A

2012-01-01

51

Isolation and characterization of a green tissue-specific promoter from pigeonpea [Cajanus cajan (L.) Millsp.].  

PubMed

Expression of rbcS genes encoding small subunit of rubisco, most abundant protein in green tissue, is regulated by at least three parameters--tissue type, light conditions and stage of development. One of the green tissue-specific promoters of rbcS gene family was isolated from pigeonpea by PCR. Expression of uidA gene encoding beta-glucuronidase in the transgenic tobacco plants under the control of pigeonpea rbcS promoter, clearly showed that this promoter was as strong as pea rbcS3A promoter characterized earlier. Study of the sequence similarity with pea rbcS3A promoter, especially the region (boxes I and III) that is required for rbcS3A expression, showed more than 50% divergence. In contrast, pigeonpea promoter sequence isolated in the present study was more similar to that of spinach and rice rbcS promoters. PMID:15875723

Panguluri, S K; Sridhar, J; Jagadish, B; Sharma, P C; Kumar, P A

2005-04-01

52

Optimization of luteolin separation from pigeonpea [Cajanus cajan (L.) Millsp.] leaves by macroporous resins.  

PubMed

In the present study, the performance and separation characteristics of eight macroporous resins for the separation of luteolin (LU) from pigeonpea leaves extracts have been evaluated. The adsorption and desorption properties of LU on macroporous resins including AB-8, NKA-9, NKA-2, D3520, D101, H1020, H103 and AL-2 have been compared. AL-2 resin offers the best adsorption and desorption capacity for LU than other resins based on the research results, and its adsorption data at 25 degrees C fit best to the Freundlich isotherm. Dynamic adsorption and desorption experiments have been carried out with the column packed by AL-2 resin to optimize the separation process of LU from pigeonpea leaves extracts. The optimum parameters for adsorption were sample solution LU concentration 65.5 microg/ml, pH 5, processing volume 3 BV, flow rate 1.5BV/h, temperature 25 degrees C; for desorption were elution solvent ethanol-water (50:50, v/v) 2 BV and followed by ethanol-water (60:40, v/v) 2 BV, and flow rate 1BV/h. After treated with AL-2 resin, the LU content in the product was increased 19.8-fold from 0.129% to 2.55%, with a recovery yield of 78.54%. The results showed that AL-2 resin revealed a good ability to separate LU. Therefore, we conclude that results in this study may provide scientific references for the large-scale LU production from pigeonpea or other plants extracts. PMID:17126843

Fu, Yujie; Zu, Yuangang; Liu, Wei; Efferth, Thomas; Zhang, Naijing; Liu, Xiaona; Kong, Yu

2006-12-29

53

Defining the Transcriptome Assembly and Its Use for Genome Dynamics and Transcriptome Profiling Studies in Pigeonpea (Cajanus cajan L.)  

PubMed Central

This study reports generation of large-scale genomic resources for pigeonpea, a so-called ‘orphan crop species’ of the semi-arid tropic regions. FLX/454 sequencing carried out on a normalized cDNA pool prepared from 31 tissues produced 494 353 short transcript reads (STRs). Cluster analysis of these STRs, together with 10 817 Sanger ESTs, resulted in a pigeonpea trancriptome assembly (CcTA) comprising of 127 754 tentative unique sequences (TUSs). Functional analysis of these TUSs highlights several active pathways and processes in the sampled tissues. Comparison of the CcTA with the soybean genome showed similarity to 10 857 and 16 367 soybean gene models (depending on alignment methods). Additionally, Illumina 1G sequencing was performed on Fusarium wilt (FW)- and sterility mosaic disease (SMD)-challenged root tissues of 10 resistant and susceptible genotypes. More than 160 million sequence tags were used to identify FW- and SMD-responsive genes. Sequence analysis of CcTA and the Illumina tags identified a large new set of markers for use in genetics and breeding, including 8137 simple sequence repeats, 12 141 single-nucleotide polymorphisms and 5845 intron-spanning regions. Genomic resources developed in this study should be useful for basic and applied research, not only for pigeonpea improvement but also for other related, agronomically important legumes. PMID:21565938

Dubey, Anuja; Farmer, Andrew; Schlueter, Jessica; Cannon, Steven B.; Abernathy, Brian; Tuteja, Reetu; Woodward, Jimmy; Shah, Trushar; Mulasmanovic, Benjamin; Kudapa, Himabindu; Raju, Nikku L.; Gothalwal, Ragini; Pande, Suresh; Xiao, Yongli; Town, Chris D.; Singh, Nagendra K.; May, Gregory D.; Jackson, Scott; Varshney, Rajeev K.

2011-01-01

54

The Effects of Salinity on Nitrogen Fixation and Trehalose Metabolism in Mycorrhizal Cajanus cajan (L.) Millsp. Plants  

Microsoft Academic Search

Arbuscular mycorrhizal (AM) fungi exist widely in natural ecosystems as well as in salt-affected soils and are considered\\u000a suitable candidates for bio-amelioration of saline soils. Plants respond to salinity by accumulating sugars and other low-molecular-weight\\u000a compatible solutes. One such compound is trehalose, which has been found to play an important role as a stress protectant.\\u000a The aim of the present

Neera Garg; Shikha Chandel

55

Nitrate reductase and nitrite as additional components of defense system in pigeonpea (Cajanus cajan L.) against Helicoverpa armigera herbivory.  

PubMed

Amylase inhibitors serve as attractive candidates of defense mechanisms against insect attack. Therefore, the impediment of Helicoverpa armigera digestion can be the effective way of controlling this pest population. Nitrite was found to be a potent mixed non-competitive competitive inhibitor of partially purified ?-amylase of H. armigera gut. This observation impelled us to determine the response of nitrite and nitrate reductase (NR) towards H. armigera infestation in nine pigeonpea genotypes (four moderately resistant, three intermediate and two moderately susceptible). The significant upregulation of NR in moderately resistant genotypes after pod borer infestation suggested NR as one of the factors that determine their resistance status against insect attack. The pod borer attack caused greater reduction of nitrate and significant accumulation of nitrite in moderately resistant genotypes. The activity of nitrite reductase (NiR) was also enhanced more in moderately resistant genotypes than moderately susceptible genotypes on account of H. armigera herbivory. Expression of resistance to H. armigera was further revealed when significant negative association between NR, NiR, nitrite and percent pod damage was observed. This is the first report that suggests nitrite to be a potent inhibitor of H. armigera ?-amylase and also the involvement of nitrite and NR in providing resistance against H. armigera herbivory. PMID:25307464

Kaur, Rimaljeet; Gupta, Anil Kumar; Taggar, Gaurav Kumar

2014-10-01

56

Delayed flowering is associated with lack of photosynthetic acclimation in Pigeon pea (Cajanus cajan L.) grown under elevated CO2.  

PubMed

In the present study, we investigated the likely consequences of future atmospheric CO2 concentrations [CO2] on growth, physiology and reproductive phenology of Pigeonpea. A short duration Pigeonpea cultivar (ICPL 15011) was grown without N fertilizer from emergence to final harvest in CO2 enriched atmosphere (open top chambers; 550?molmol(-1)) for two seasons. CO2 enrichment improved both net photosynthetic rates (Asat) and foliar carbohydrate content by 36 and 43%, respectively, which further reflected in dry biomass after harvest, showing an increment of 29% over the control plants. Greater carboxylation rates of Rubisco (Vcmax) and photosynthetic electron transport rates (Jmax) in elevated CO2 grown plants measured during different growth periods, clearly demonstrated lack of photosynthetic acclimation. Further, chlorophyll a fluorescence measurements as indicated by Fv/Fm and ?F/Fm' ratios justified enhanced photosystem II efficiency. Mass and number of root nodules were significantly high in elevated CO2 grown plants showing 58% increase in nodule mass ratio (NMR) which directly correlated with Pn. Growth under high CO2 showed significant ontogenic changes including delayed flowering. In conclusion, our data demonstrate that the lack of photosynthetic acclimation and increased carbohydrate-nitrogen reserves modulate the vegetative and reproductive growth patterns in Pigeonpea grown under elevated CO2. PMID:25575994

Sreeharsha, Rachapudi Venkata; Sekhar, Kalva Madhana; Reddy, Attipalli Ramachandra

2015-02-01

57

A Comprehensive Transcriptome Assembly of Pigeonpea (Cajanus cajan L.) using Sanger and Second-Generation Sequencing Platforms  

PubMed Central

A comprehensive transcriptome assembly for pigeonpea has been developed by analyzing 128.9 million short Illumina GA IIx single end reads, 2.19 million single end FLX/454 reads, and 18?353 Sanger expressed sequenced tags from more than 16 genotypes. The resultant transcriptome assembly, referred to as CcTA v2, comprised 21?434 transcript assembly contigs (TACs) with an N50 of 1510?bp, the largest one being ?8?kb. Of the 21?434 TACs, 16?622 (77.5%) could be mapped on to the soybean genome build 1.0.9 under fairly stringent alignment parameters. Based on knowledge of intron junctions, 10?009 primer pairs were designed from 5033 TACs for amplifying intron spanning regions (ISRs). By using in silico mapping of BAC-end-derived SSR loci of pigeonpea on the soybean genome as a reference, putative mapping positions at the chromosome level were predicted for 6284 ISR markers, covering all 11 pigeonpea chromosomes. A subset of 128 ISR markers were analyzed on a set of eight genotypes. While 116 markers were validated, 70 markers showed one to three alleles, with an average of 0.16 polymorphism information content (PIC) value. In summary, the CcTA v2 transcript assembly and ISR markers will serve as a useful resource to accelerate genetic research and breeding applications in pigeonpea. PMID:22241453

Kudapa, Himabindu; Bharti, Arvind K.; Cannon, Steven B.; Farmer, Andrew D.; Mulaosmanovic, Benjamin; Kramer, Robin; Bohra, Abhishek; Weeks, Nathan T.; Crow, John A.; Tuteja, Reetu; Shah, Trushar; Dutta, Sutapa; Gupta, Deepak K.; Singh, Archana; Gaikwad, Kishor; Sharma, Tilak R.; May, Gregory D.; Singh, Nagendra K.; Varshney, Rajeev K.

2012-01-01

58

UV-induced changes of active components and antioxidant activity in postharvest pigeon pea [Cajanus cajan (L.) Millsp.] leaves.  

PubMed

In this study, the effect of UV irradiation (UV-A, UV-B, and UV-C) on phytochemicals, total phenolics, and antioxidant activity of postharvest pigeon pea leaves was evaluated. The response of pigeon pea leaves to UV irradiation was phytochemical specific. UV-B and UV-C induced higher levels of phytochemicals, total phenolics, and antioxidant activity in pigeon pea leaves compared with UV-A. Furthermore, UV-B irradiation proved to possess a long-lasting effect on the levels of phenolics and antioxidant activity. After adapting for 48 h at 4 °C following 4 h UV-B irradiation, total phenolics and antioxidant activity were approximately 1.5-fold and 2.2-fold increased from 39.4 mg GAE/g DM and 15.0 ?mol GAE/g DM to 59.1 mg GAE/g DM and 32.5 ?mol GAE/g DM, respectively. These results indicate that UV irradiation of pigeon pea leaves can be beneficial in terms of increasing active components and antioxidant activity. PMID:23320913

Wei, Zuo-Fu; Luo, Meng; Zhao, Chun-Jian; Li, Chun-Ying; Gu, Cheng-Bo; Wang, Wei; Zu, Yuan-Gang; Efferth, Thomas; Fu, Yu-Jie

2013-02-13

59

Partial 16S rRNA gene sequence diversity and numerical taxonomy of slow growing pigeonpea (Cajanus cajan L Millsp) nodulating rhizobia.  

PubMed

An investigation was carried out to determine the diversity of 30 isolates of slow growing pigeonpea nodulating rhizobia based on variations in partial sequences of the 16S rRNA gene and numerical analysis of 80 phenotypic traits. Phylogenetic analysis using molecular sequences of 23 isolates showed that ARPE1 separated from the other isolates at an average distance of >14% divergence level. The other isolates were all within 5% divergence from each other but separated into four main groups, with group 1 containing 16 of the 23 isolates. Comparisons to sequences of reference strains revealed that the group 1 isolates were phylogenetically closely related to the slow growing soybean nodulating rhizobia belonging to Bradyrhizobium elkanii, although only three of these isolates were able to nodulate soybean. Numerical analysis of phenotypic data of 19 isolates showed that 14 isolates clustered together in one branch of the phenogram, which included the group 1, group 2 and group 4 isolates from the phylogenetic analysis. The group 3 isolates were highly variable in the phenogram with similarity levels lower than 50% among these isolates. PMID:12435494

Ramsubhag, Adash; Umaharan, Pathmanathan; Donawa, Alfred

2002-11-01

60

Characterization of expressed sequence tags (ESTs) of pigeonpea ( Cajanus cajan L.) and functional validation of selected genes for abiotic stress tolerance in Arabidopsis thaliana  

Microsoft Academic Search

Pigeonpea, a major grain legume crop with remarkable drought tolerance traits, has been used for the isolation of stress-responsive\\u000a genes. Herein, we report generation of ESTs, transcript profiles of selected genes and validation of candidate genes obtained\\u000a from the subtracted cDNA libraries of pigeonpea plants subjected to PEG\\/water-deficit stress conditions. Cluster analysis\\u000a of 124 selected ESTs yielded 75 high-quality ESTs.

B. Priyanka; K. Sekhar; T. Sunita; V. D. Reddy; Khareedu Venkateswara Rao

2010-01-01

61

Limiting an Insect Infestation of Nitrogen-Fixing Root Nodules of the Pigeon Pea (Cajanus cajan) by Engineering the Expression of an Entomocidal Gene in Its Root Nodules  

PubMed Central

A region of DNA which determined the production of the insecticidal toxin of Bacillus thuringiensis subsp. israelensis was cloned into a derivative of a broad-host-range group IncQ plasmid vector of gram-negative bacteria. The plasmid which we constructed was transferred by conjugative mobilization into a Bradyrhizobium species that nodulates pigeon peas. In this species the construction was maintained stably in the absence of selection and expressed the gene that was installed. Experiments in a greenhouse with the strain which we constructed indicated that this organism provides protection against root nodule damage by the larvae of the insect Rivellia angulata (Diptera). Images PMID:16348294

Nambiar, P. T. C.; Ma, S.-W.; Iyer, V. N.

1990-01-01

62

In vitro antioxidant properties, DNA damage protective activity, and xanthine oxidase inhibitory effect of cajaninstilbene acid, a stilbene compound derived from pigeon pea [Cajanus cajan (L.) Millsp.] leaves.  

PubMed

The antioxidant properties, DNA damage protective activities, and xanthine oxidase (XOD) inhibitory effect of cajaninstilbene acid (CSA) derived from pigeon pea leaves were studied in the present work. Compared with resveratrol, CSA showed stronger antioxidant properties, DNA damage protective activity, and XOD inhibition activity. The IC(50) values of CSA for superoxide radical scavenging, hydroxyl radical scavenging, nitric oxide scavenging, reducing power, lipid peroxidation, and XOD inhibition were 19.03, 6.36, 39.65, 20.41, 20.58, and 3.62 ?M, respectively. CSA possessed good protective activity from oxidative DNA damage. Furthermore, molecular docking indicated that CSA was more potent than resveratrol or allopurinol to interact with the active site of XOD (calculated free binding energy: -229.71 kcal mol(-1)). On the basis of the results, we conclude that CSA represents a valuable natural antioxidant source and may potentially be applicable in health food industry. PMID:21128613

Wu, Nan; Kong, Yu; Fu, Yujie; Zu, Yuangang; Yang, Zhiwei; Yang, Mei; Peng, Xiao; Efferth, Thomas

2011-01-12

63

Cajan leaf combined with bone marrow-derived mesenchymal stem cells for the treatment of osteonecrosis of the femoral head  

PubMed Central

The aim of the present study was to observe the curative effect of traditional Chinese cajan leaves, combined with administration of bone marrow-derived mesenchymal stem cells (BMSCs), on osteonecrosis of the femoral head (ONFH) in rats and to investigate the underlying mechanisms. A total of 40 rat ONFH models were established through liquid nitrogen freezing and were subsequently divided into groups: A, control; B, treated with cajan leaf; C, treated with BMSCs and D, treated with cajan leaf combined with BMSCs. Samples were obtained 30 days following treatment, and immunohistochemical staining of vascular endothelial growth factor (VEGF) and image analysis were performed. Chondrocytes and vascular endothelial cells were stained as a result of immunohistochemical staining and group D exhibited markedly deeper staining, and a significantly larger number of stained cells, compared with group A. Thus, in the present study, cajan leaf combined with BMSCs was shown to promote VEGF expression and improve ONFH repair. PMID:24926328

SHI, DA; SUN, YINDI; YIN, JICHAO; FAN, XIAOCHEN; DUAN, HONGHAO; LIU, NA; HE, WEI

2014-01-01

64

Additional hosts of alfalfa mosaic virus, cucumber mosaic virus, and tobacco mosaic virus in New Zealand  

Microsoft Academic Search

In New Zealand, alfalfa mosaic virus is recorded on three new field crop hosts, Cajanus cajan (L.) Huth, Coriandrum sativum L., and Wasabia japonica (Miquel) Matsum. Cucumber mosaic virus is recorded on the weeds Cirsium vulgare L. and Veronica persica Poiret and on the ornamental perennial Gentiana sp. Tobacco mosaic virus is recorded on sunflower Helianthus annuus L.

J. D. Fletcher

1989-01-01

65

Detection of Legume Protease Inhibitors by the Gel-X-ray Film Contact Print Technique  

ERIC Educational Resources Information Center

Redgram (Cajanus cajan L.) extracts have been analyzed for the protease inhibitors using a new, sensitive, simple, and rapid method for detection of electrophoretically separated protease inhibitors. The detection involves equilibrating the gel successively in the protease assay buffer and protease solution, rinsing the gel in assay buffer, and…

Mulimani, Veerappa H.; Sudheendra, Kulkarni; Giri, Ashok P.

2002-01-01

66

SHORT-DURATION PIGEONPEA - A POTENTIAL GRAIN AND FORAGE FOR THE SOUTHERN PLAINS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Forage based livestock production systems occur extensively throughout the southern Great Plains (SPG). However, a period of limited forage availability occurs from late July to early November in the region. In semi-arid regions of Asia, pigeon-pea (Cajanus cajan L. Millsp) is grown for grain and ...

67

WEED CONTROL IN A PIGEON PEA - WHEAT ROTATION: FINAL REPORT OF A THREE YEAR STUDY  

Technology Transfer Automated Retrieval System (TEKTRAN)

Pigeon pea [Cajanus cajan (L.) Millsp.] has potential as a hay, grain, and green manure crop in the southern Great Plains. Rapid growth of pigweed [Amaranthus retroflexus (L.)] adversely affects establishment of slower-growing pigeon pea. A 3-yr study was conducted from June 1998 through June 2001 i...

68

Capabilities of four novel warm-season legumes in the southern Great Plains: grain production and quality  

Technology Transfer Automated Retrieval System (TEKTRAN)

Grain legumes could serve as a low cost nitrogen (N) and energy source for animal production in the southern Great Plains (SGP). This study evaluated the yield and nutritive value of grains of tropical annual legumes novel to the SGP. Included were cultivars of pigeon pea ([Cajanus cajan (L.) Millsp...

69

TEMPERATURE EFFECTS ON BRADYRHIZOBIUM SPP. GROWTH AND SYMBIOTIC EFFECTIVENESS WITH PIGEONPEA AND COWPEA  

Technology Transfer Automated Retrieval System (TEKTRAN)

Temperature is a limiting factor on legume-Bradyrhizobium symbiosis of subtropical plants in the temperate region. Twelve strains of Bradyrhizobium spp. that nodulate pigeonpea [Cajanus cajan (L.) Millsp], and cowpea [Vigna unguiculata (L.) Walp], were evaluated for tolerance to three temperature re...

70

Capabilities of four novel warm-season legumes in the southern Great Plains: biomass and forage quality  

Technology Transfer Automated Retrieval System (TEKTRAN)

Grain legumes could provide high nitrogen (N), late summer forage for stocker cattle in the southern Great Plains (SGP). This study evaluated the forage yield and nutritive value of tropical annual legumes novel to the SGP. Included were cultivars of pigeon pea ([Cajanus cajan (L.) Millsp.], cv. ‘GA...

71

Pigeon pea potential for summer grazing in the Southern Great Plains  

Technology Transfer Automated Retrieval System (TEKTRAN)

Stocker cattle production in the southern Great Plains (SGP) faces forage quality gaps during July through September. A study was conducted in 2008 through 2010 to determine if pigeon pea [Cajanus cajan (L.) Millsp.] could fill this deficit period. Six, 0.41 ha experimental paddocks were randomly ...

72

MODELING PIGEONPEA PHENOLOGY  

Technology Transfer Automated Retrieval System (TEKTRAN)

Pigeonpea (Cajanus cajan (L.) Millsp.) is a widely grown legume in tropical and subtropical areas. A crop simulation model that can assist in farmer decision-making was developed. The phenological module is one of the major elements of the crop model because accurate prediction of the timing of gr...

73

Production of l -asparaginase, an anticancer agent, from Aspergillus niger using agricultural waste in solid state fermentation  

Microsoft Academic Search

This article reports the production of high levels of l-asparaginase from a new isolate of Aspergillus niger in solid state fermentation (SSF) using agrowastes from three leguminous crops (bran of Cajanus cajan, Phaseolus mungo, and Glycine max). When used as the sole source for growth in SSF, bran of G. max showed maximum enzyme production followed by that of P.

Abha Mishra

2006-01-01

74

Biological significance of nickel on the nitrogen fixing ability of cowpea Bradyrhizobium  

Microsoft Academic Search

Effect of nickel (Ni) at various concentrations on the growth and nitrogen (N) fixing ability of two strains of cowpea Bradyrhizobium RA 5 nodulating Pigeon pea (Cajanus cajan var. T 21) and MO 5 nodulating Green gram (Vigna radiata Var. PS16) were examined. At 1 ?g#lbmL, Ni stimulated the growth of both bacteria when cultured in yeast extract mannitol (YM)

R. K. Singh; P. J. M. Rao

1997-01-01

75

POTENTIAL GRAIN AND FORAGE PRODUCTION OF EARLY MATURING PIGEONPEAS IN THE SOUTHERN PLAINS  

Technology Transfer Automated Retrieval System (TEKTRAN)

Forage-based livestock production is a significant component of the agricultural economy throughout the southern Great Plains. However, low forage mass and quality for grazing limits livestock productivity from late-July to early-November. Pigeonpea (Cajanus cajan L. Millsp) is a warm-season grain...

76

Water acquisition from rainfall and groundwater by legume crops developing deep rooting systems determined with stable hydrogen isotope compositions of xylem waters  

Microsoft Academic Search

The deuterium\\/hydrogen isotope ratios (?D) of xylem waters from pigeon pea (Cajanus cajan) and sesbania (Sesbania sesban) plants grown in semi-arid Zambia were investigated to know the seasonal variation in water sources for those crops. The study was conducted at a field site in the Zambia National Irrigation Research Station from November 2000 until April 2001. We measured the ?D

N. Sekiya; K. Yano

2002-01-01

77

Effect of cover crop on soil physical and chemical properties of an alfisol in the Sudan savannah of Burkina faso  

Microsoft Academic Search

The effect of several leguminous and graminaceous cover crops on soil physical and chemical properties was studied on a moderately eroded Alfisol in the Sudan savannah of Burkina Faso during the growing seasons of 1986 and 1987. Cover crops sown in 1986 were Macroptilium artropurpureum, M. lathyroides, Vigna radiata var. radiata, Cajanus cajan, Alysicarpus vaginalis, Lablab purpureus, Psophocarpus palustris, Digitaria

N. R. Hulugalle

1988-01-01

78

Field evaluation of nitrogen fixation and use of nitrogen fertilizer by sorghum\\/pigeonpea intercropping on an Alfisol in the Indian semi-arid tropics  

Microsoft Academic Search

A field experiment was conducted to obtain the N balance sheet for sole crops and intercrops of sorghum [Sorghum bicolor (L.) Moench] and pigeonpeas [Cajanus cajan (L.) Millsp.]. Intercropping gave a significant advantage over sole cropping in terms of dry matter production and grain yield, as calculated on the basis of the land equivalent ratio and area-time equivalent ratio. The

S. Tobita; O. Ito; R. Matsunaga; T. P. Rao; T. J. Rego; C. Johansen; T. Yoneyama

1994-01-01

79

Nodulation Characteristics, Nodule Nitrogen, and Carbon Dioxide Fixation in Pigeon Pea as Affected by Nitrogen  

Microsoft Academic Search

The legume pigeon pea [Cajanus cajan (L.) Millsp.] is an important rainfed crop in many areas of the world. Production can be reduced when high nitrogen is present and symbiotic activity is low. A field experiment was conducted to determine the effects of nitrogen rate on nodulation, nodule carbon, and nitrogen fixation in 40 pigeon pea genotypes. Nitrogen was applied

Bhupinder Singh; Binod Kumar Singh

2011-01-01

80

Modulation of quorum sensing controlled behaviour of bacteria by growing seedling, seed and seedling extracts of leguminous plants  

Microsoft Academic Search

Effect of growing seedling, seeds and seedlings extracts from seven leguminous plants (Pisum sativum, Vigna radiata, Vigna mungo, Cajanus cajan, Lentil culinaris, Cicer arietinum and Trigonella foenum graecum) were screened for their ability to influence quorum sensing controlled pigment production in Chromobacterium violaceum indicator strains (CV12472 and CVO26). Germinating seedling and seedling extracts of only P. sativum (pea) showed inhibition

Qaseem Fatima; Maryam Zahin; Mohd Sajjad Ahmad Khan; Iqbal Ahmad

2010-01-01

81

Cytokinin-like effects of caffeine in bioassays  

Microsoft Academic Search

Cytokinin-like effects of pure caffeine were tested in bioassays specific for this hormonal activity [radish cotyledon growth\\u000a and chlorophyll (Chl) biosynthesis in cucumber cotyledon and tobacco cell suspension] and in cell elongation bioassays [elongation\\u000a of segments from soybean internode and internode elongation in dwarf cultivars of guandu (Cajanus cajan) and mucuna (Mucuna\\u000a deeringiana)]. 6-Benzyl-aminopurine and kinetin (KIN) were used for

A. P. Vitória; P. Mazzafera

1997-01-01

82

Zinc-Induced Changes in Growth Characters, Foliar Properties, and Zn-Accumulation Capacity of Pigeon Pea at Different Stages of Plant Growth  

Microsoft Academic Search

Application of zinc (Zn) [50, 100, 200, 300, and 400 ? g zinc sulfate (ZnSO4)\\/g of soil] reduced the foliage and the total growth of pigeon pea [Cajanus cajan (Linn.) Huth]. The root-shoot length ratio, varying little with age, was relatively low in the treated plants. Decrease in dry weights of stem and root was more pronounced in the late

Tarannum Khudsar; Anjum Arshi; Tariq O. Siddiqi; Mahmooduzzafar; Muhammad Iqbal

2008-01-01

83

Soil properties and crop performance on a kaolinitic Alfisol after 15 years of fallow and continuous cultivation  

Microsoft Academic Search

A long-term field experiment was established on a kaolinitic Alfisol in Ibadan, Nigeria, in 1972. The land was cleared manually from secondary forest and used for (i) continuous no-till cropping with maize (Zea mays L.) and maize\\/cassava (Manihot esculenta Crantz) intercropping, (ii) planted fallow of guinea grass (Panicum maximum Jacq.), leucaena (Leucaena leucocephala de Wit), and pigeon pea (Cajanus cajan

Anthony S. R. Juo; Kathrin Franzluebbers; Adenike Dabiri; Benson Ikhile

1996-01-01

84

Response of pigeon pea to variable levels of manganese  

Microsoft Academic Search

Pigeon pea (Cajanus cajan (L.) Millsp.) cv. T21 was grown in refined sand at manganese levels ranging from 0-0011 to 5·5 mg 1?1. At less than 0·055 mg Mn 1?1, growth was depressed. In manganese deficient plants, there was reduction in the area and number of leaves. A reduction in\\u000a seed yield was observed at low and excess manganese and

C P Sharma; Neena Khurana; C Chatterjee; S C Agarwala

1988-01-01

85

PARA EL BOSQUE CHIQUITANO  

Microsoft Academic Search

Durante los últimos años se han desarrollado acciones tanto regulatorias como correctoras, para frenar la progresiva pérdida de cobertura boscosa. Sin embargo, estas acciones no alcanzaron los niveles de efectividad esperados debido principalmente a los incentivos económicos que conducen a la población a desmontar los bosques para desarrollar actividades relacionadas principalmente con la producción agropecuaria. A través del presente documento,

Alfonso F. Malky Harb; Medio Ambiente

86

Declination of Copper Toxicity in Pigeon Pea and Soil System by Growth-Promoting Proteus vulgaris KNP3 Strain  

Microsoft Academic Search

The copper-resistant (1318 ?M CuSO4·5H2O) strain KNP3 of Proteus vulgaris was isolated from soil near the Panki power plant, Kanpur, India, and was used to inoculate pigeon pea (Cajanus cajan var. UPS-120) seeds grown in soil for 60 days in the presence of 600 ?M CuSO4·5H2O. A study of siderophore production (126.34 ± 0.52 ?g ml?1) and its subsequent effects on plant growth

Anju Rani; Yogesh S. Shouche; Reeta Goel

2008-01-01

87

Large-Scale Development of Cost-Effective Single-Nucleotide Polymorphism Marker Assays for Genetic Mapping in Pigeonpea and Comparative Mapping in Legumes  

PubMed Central

Single-nucleotide polymorphisms (SNPs, >2000) were discovered by using RNA-seq and allele-specific sequencing approaches in pigeonpea (Cajanus cajan). For making the SNP genotyping cost-effective, successful competitive allele-specific polymerase chain reaction (KASPar) assays were developed for 1616 SNPs and referred to as PKAMs (pigeonpea KASPar assay markers). Screening of PKAMs on 24 genotypes [23 from cultivated species and 1 wild species (Cajanus scarabaeoides)] defined a set of 1154 polymorphic markers (77.4%) with a polymorphism information content (PIC) value from 0.04 to 0.38. One thousand and ninety-four PKAMs showed polymorphisms between parental lines of the reference mapping population (C. cajan ICP 28 × C. scarabaeoides ICPW 94). By using high-quality marker genotyping data on 167 F2 lines from the population, a comprehensive genetic map comprising 875 PKAMs with an average inter-marker distance of 1.11 cM was developed. Previously mapped 35 simple sequence repeat markers were integrated into the PKAM map and an integrated genetic map of 996.21 cM was constructed. Mapped PKAMs showed a higher degree of synteny with the genome of Glycine max followed by Medicago truncatula and Lotus japonicus and least with Vigna unguiculata. These PKAMs will be useful for genetics research and breeding applications in pigeonpea and for utilizing genome information from other legume species. PMID:23103470

Saxena, Rachit K.; Varma Penmetsa, R.; Upadhyaya, Hari D.; Kumar, Ashish; Carrasquilla-Garcia, Noelia; Schlueter, Jessica A.; Farmer, Andrew; Whaley, Adam M.; Sarma, Birinchi K.; May, Gregory D.; Cook, Douglas R.; Varshney, Rajeev K.

2012-01-01

88

Tomografía computarizada (TC) y exploraciones para cáncer  

Cancer.gov

Hoja informativa que describe el procedimiento y la tecnología de exploraciones con tomografía computarizada así como sus usos para el diagnóstico, para exámenes de detección y para tratamiento del cáncer.

89

Pruebas genéticas para síndromes hereditarios de cáncer  

Cancer.gov

Hoja informativa sobre pruebas genéticas para riesgos heredados de cáncer; incluye tipos de pruebas, para quién están indicadas y explicación y confidencialidad de los resultados. Ofrece información de pruebas genéticas a domicilio o pruebas para el consumidor.

90

Prmio para trs novas aplicaes  

E-print Network

Prémio para três novas aplicações Tecnologia. A "wiride" venceu o "Lisbon Big Apps", concurso de Instituto Superior Técnico que desenvolveu o projeto, citada pelo/dAT, a "wiride" é uma nova forma de andar

Instituto de Sistemas e Robotica

91

AYUDA PARA INVIDENTES UTILIZANDO TELEFONOS  

E-print Network

´on, aplicaci´on para m´oviles, c´odigo, base de da- tos,dpi (puntos por pulgada, dots per inch),layout,GPS. III #12;IV #12;Abstract Abstract The purpose of this project is to develop three smartphone apps in two of the most used moblie O.S: Android and iOS. This project has three apps: two developed in Android and one

Autonoma de Madrid, Universidad

92

PREPARE UN EQUIPO PORTTIL PARA EMERGENCIAS Prepare un equipo portatil para emergencias de modo que pueda  

E-print Network

PREPARE UN EQUIPO PORTÁTIL PARA EMERGENCIAS Prepare un equipo portatil para emergencias de modo que libre) 2. Equipos medicos caseros (ejemplos: medidor de glucosa, monitor de presion arterial, baston

93

Taller de Ciencia para Jvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas  

E-print Network

Taller de Ciencia para Jóvenes para alumnos de bachillerato San Cristobal de las Casas, Chiapas 3-7 agosto, 2009 CONVOCATORIA El "Taller de Ciencia para Jóvenes" en San Cristobal de las Casas (Chiapas), está dirigido a los alumnos de escuelas de nivel bachillerato que se sienten atraidos a las ciencias

Bor, Gil

94

CURSO DE MUSICALIZAÇÃO PARA BEBÊS DA UFBA  

Microsoft Academic Search

RESUMO: Considerando a importância da Educação Musical na primeira infância e os benefícios que esta pode trazer, este artigo tem o intuito de descrever e analisar os resultados do primeiro semestre do curso de musicalização para bebês na UFBA, que teve início em setembro de 2006, contemplando crianças com idades entre 0 e 4 anos, acompanhadas de seus responsáveis. Para

Angelita Maria Vander Broock

95

Semntica Operacional para la Programacin en Lgica  

E-print Network

(S)], [Y, a] } = { [S, g(X)] } Sustituciones Unificadoras y m.g.u./s Def: Sea S un conjunto de términos verifica que para todo otro unificador para S, existe una sustitución tal que = . Sust. Unif. y m.g.u./s

Simari, Guillermo R.

96

Optimum domestic processing and cooking methods for reducing the polyphenolic (antinutrient) content of pigeon peas.  

PubMed

Four high yielding and early maturing cultivars of pigeon pea (Cajanus cajan) namely UPAS-120, ICPL-87, ICPL-151 and, especially, Manak, contained significant amounts of polyphenols (1075 to 1328 mg/100g), which may limit their utilization. The effectiveness of soaking (6, 12 and 18 h, 30 degrees C), soaking and dehulling, ordinary cooking, pressure cooking and germination (24, 36, 48 h, 30 degrees C) in reducing the levels of polyphenols was investigated. A decrease in the polyphenolic contents varying from 4 to 26 percent in different pigeon pea cultivar was achieved. Pressure cooking of soaked-dehulled seeds was found to be the most effective method, followed by sprouting for 48 h, ordinary cooking of soaked-dehulled seeds, and pressure cooking of soaked whole seeds followed by sprouting for 36 h. PMID:10768410

Duhan, A; Khetarpaul, N; Bishnoi, S

2000-01-01

97

Antileishmanial and antifungal activity of plants used in traditional medicine in Brazil.  

PubMed

The antileishmanial and antifungal activity of 24 methanol extracts from 20 plants, all of them used in the Brazilian traditional medicine for the treatment of several infectious and inflammatory disorders, were evaluated against promastigotes forms of two species of Leishmania (L. amazonensis and L. chagasi) and two yeasts (Candida albicans and Cryptococcus neoformans). Among the 20 tested methanolic extracts, those of Vernonia polyanthes was the most active against L. amazonensis (IC(50) of 4 microg/ml), those of Ocimum gratissimum exhibited the best activity against L. chagasi (IC(50) of 71 microg/ml). Concerning antifungical activity, Schinus terebintifolius, O. gratissimum, Cajanus cajan, and Piper aduncum extracts were the most active against C. albicans (MIC of 1.25 mg/ml) whereas Bixa orellana, O. gratissimum and Syzygium cumini exhibited the best activity against C. neoformans (MIC of 0.078 mg/ml). PMID:17234373

Braga, Fernanda G; Bouzada, Maria Lúcia M; Fabri, Rodrigo L; de O Matos, Magnum; Moreira, Francis O; Scio, Elita; Coimbra, Elaine S

2007-05-01

98

A pyrF auxotrophic mutant of Sinorhizobium fredii HH103 impaired in its symbiotic interactions with soybean and other legumes.  

PubMed

Transposon Tn5-Mob mutagenesis allowed the selection of a Sinorhizobium fredii HH103 mutant derivative (SVQ 292) that requires the presence of uracil to grow in minimal media. The mutated gene, pyrF, codes for an orotidine-5 - monophosphate decarboxylase (EC 4.1.1.23). Mutant SVQ 292 and its parental prototrophic mutant HH103 showed similar Nod-factor and lipopolysaccharide profiles. The symbiotic properties of mutant SVQ 292 were severely impaired with all legumes tested. Mutant SVQ 292 formed small ineffective nodules on Cajanus cajan and abnormal nodules (pseudonodules) unable to fix nitrogen on Glycine max (soybean), Macroptitlium atropurpureum, Indigofera tinctoria, and Desmodium canadense. It also did not induce any macroscopic response in Macrotyloma axillare roots. The symbiotic capacity of SVQ 292 with soybean was not enhanced by the addition of uracil to the plant nutritive solution. PMID:18075998

Crespo-Rivas, Juan C; Margaret, Isabel; Pérez-Montaño, Francisco; López-Baena, Francisco J; Vinardell, José M; Ollero, Francisco J; Moreno, Javier; Ruiz-Sainz, José E; Buendía-Clavería, Ana M

2007-09-01

99

Sucrose: a constitutive elicitor of phytoalexin synthesis.  

PubMed

Extracts of seeds and leaves of the tropical legume Cajanus cajan (L.) Millsp. (the pigeon pea) elicited the accumulation of three phytoalexins when applied as droplets to superficially wounded leaves of the plant. The active component was purified and identified as sucrose. Phytoalexin accumulation was proportional to the logarithm of the concentration of sucrose applied, with maxima ranging from 338 to 455 micrograms per gram (fresh weight) of leaf tissue. The sucrose concentrations required to elicit half these amounts ranged from 20 to 35 micrograms per milliliter, but other sugars had little effect even at 1000 micrograms per milliliter. The elicitor activity of sucrose was abolished by actinomycin D, puromycin, and cycloheximide at a concentration of 10 micrograms per milliliter or greater, suggesting that gene derepression is required for expression of the phytoalexin response. PMID:17730656

Cooksey, C J; Garratt, P J; Dahiya, J S; Strange, R N

1983-06-24

100

Modulation of quorum sensing controlled behaviour of bacteria by growing seedling, seed and seedling extracts of leguminous plants.  

PubMed

Effect of growing seedling, seeds and seedlings extracts from seven leguminous plants (Pisum sativum, Vigna radiata, Vigna mungo, Cajanus cajan, Lentil culinaris, Cicer arietinum and Trigonella foenum graecum) were screened for their ability to influence quorum sensing controlled pigment production in Chromobacterium violaceum indicator strains (CV12472 and CVO26). Germinating seedling and seedling extracts of only P. sativum (pea) showed inhibition of violacein production. Interestingly, the T. foenum graecum (fenugreek) seed extracts enhances the pigment production. Quorum sensing regulated swarming motility in Pseudomonas aerugionsa PAO1 was reduced by pea seedling extract while enhanced by the fenugreek seed extracts. These findings suggest that plant metabolites of some legumes interact actively with bacterial quorum sensing and could modulate its associated functions. PMID:23100836

Fatima, Qaseem; Zahin, Maryam; Khan, Mohd Sajjad Ahmad; Ahmad, Iqbal

2010-06-01

101

Genome Duplication and Gene Loss Affect the Evolution of Heat Shock Transcription Factor Genes in Legumes  

PubMed Central

Whole-genome duplication events (polyploidy events) and gene loss events have played important roles in the evolution of legumes. Here we show that the vast majority of Hsf gene duplications resulted from whole genome duplication events rather than tandem duplication, and significant differences in gene retention exist between species. By searching for intraspecies gene colinearity (microsynteny) and dating the age distributions of duplicated genes, we found that genome duplications accounted for 42 of 46 Hsf-containing segments in Glycine max, while paired segments were rarely identified in Lotus japonicas, Medicago truncatula and Cajanus cajan. However, by comparing interspecies microsynteny, we determined that the great majority of Hsf-containing segments in Lotus japonicas, Medicago truncatula and Cajanus cajan show extensive conservation with the duplicated regions of Glycine max. These segments formed 17 groups of orthologous segments. These results suggest that these regions shared ancient genome duplication with Hsf genes in Glycine max, but more than half of the copies of these genes were lost. On the other hand, the Glycine max Hsf gene family retained approximately 75% and 84% of duplicated genes produced from the ancient genome duplication and recent Glycine-specific genome duplication, respectively. Continuous purifying selection has played a key role in the maintenance of Hsf genes in Glycine max. Expression analysis of the Hsf genes in Lotus japonicus revealed their putative involvement in multiple tissue-/developmental stages and responses to various abiotic stimuli. This study traces the evolution of Hsf genes in legume species and demonstrates that the rates of gene gain and loss are far from equilibrium in different species. PMID:25047803

Jin, Jing; Jin, Xiaolei; Jiang, Haiyang; Yan, Hanwei; Cheng, Beijiu

2014-01-01

102

Doutorados, para qu ? Paulo J. Ferreira  

E-print Network

1 Doutorados, para quê ? Paulo J. Ferreira Massachusetts Institute of Technology (MIT) Department of Materials Science and Engineering Cambridge, MA, 02139, USA, ferreira@mit.edu Um engenheiro recém

Ferreira, Paulo J.

103

Esta Preparado? Gua para los Tejanos en  

E-print Network

pilas con pilas adicionales para durar varios días ___ Linternas de pilas con pilas adicionales ___ Agua huracanes, aún así pueden causar la muerte debido a lluvias torrenciales, inundaciones, y tornados que los

104

Consejos para pacientes que reciben radioterapia  

Cancer.gov

Serie de nueve (9) hojas sobre los efectos secundarios de la radioterapia. Cada hoja contiene recomendaciones y sugerencias prácticas para ayudarle a controlar los efectos secundarios durante la radioterapia, y a que se sienta mejor durante el tratamiento.

105

Proyecto para desarrollar un 'Teatro Popular Identificador'.  

E-print Network

se encargue de ellos en los infiernos. . . . RAÍCES PARA UN TEATRO NACIONAL POPULAR. La diversidad de elementos teatrales existentes en las farsas carnavalescas de la Costa Atlántica y otras regiones del país —Blancos y Negros en Pasto y Tumaco...

Zapata Olivella, Manuel

1975-10-01

106

Consejos para pacientes que reciben quimioterapia  

Cancer.gov

Serie de dieciocho (18) hojas sobre los efectos secundarios de la quimioterapia. Cada hoja contiene recomendaciones y sugerencias prácticas para ayudarle a controlar los efectos secundarios durante la quimioterapia, y a que se sienta mejor durante el tratamiento.

107

DOCUMENTAO PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

1 DOCUMENTA��O PARA INGRESSO POR TRANSFER�NCIA EXTERNA (BRASIL) PERÍODO 2013.2 PRAZO PARA REQUERER a convalidação dos estudos concedida pela Secretaria Estadual de Educação, no Brasil. Se o Ensino Médio foi; - Certificado de Dispensa de Incorporação; - CPF; 4 - Originais (assinados e carimbados) dos seguintes

108

DOCUMENTAO PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

1 DOCUMENTA��O PARA INGRESSO POR TRANSFER�NCIA EXTERNA (BRASIL) PERÍODO 2014.1 PRAZO PARA REQUERER deverá entregar a convalidação dos estudos concedida pela Secretaria Estadual de Educação, no Brasil. Se aceita) - Título de Eleitor; - Certificado de Dispensa de Incorporação; - CPF; 4 - Originais (assinados e

109

EDITAL COMPLETO PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

1 EDITAL COMPLETO PARA INGRESSO POR TRANSFER�NCIA EXTERNA (BRASIL) PERÍODO 2014.1 PRAZO PARA deverá entregar a convalidação dos estudos concedida pela Secretaria Estadual de Educação, no Brasil. Se aceita) - Título de Eleitor; #12;2 - Certificado de Dispensa de Incorporação; - CPF; 4 - Originais

110

NORMAS GERAIS PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

1 NORMAS GERAIS PARA INGRESSO POR TRANSFER�NCIA EXTERNA (BRASIL) PERÍODO 2013.1 PRAZO PARA REQUERER deverá entregar a convalidação dos estudos concedida pela Secretaria Estadual de Educação, no Brasil. Se aceita) - Título de Eleitor; - Certificado de Dispensa de Incorporação; - CPF; #12;2 4 - Originais

111

NORMAS GERAIS PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

1 NORMAS GERAIS PARA INGRESSO POR TRANSFER�NCIA EXTERNA (BRASIL) PERÍODO 2013.2 PRAZO PARA REQUERER deverá entregar a convalidação dos estudos concedida pela Secretaria Estadual de Educação, no Brasil. Se aceita) - Título de Eleitor; - Certificado de Dispensa de Incorporação; - CPF; #12;2 4 - Originais

112

Software Libre para ensear o aprender Matemtica  

E-print Network

Software Libre para enseñar o aprender Matemática Porqué y Cómo Pablo De Nápoli pdenapo@dm.uba.ar #12;Introducción · En esta charla, presentaremos algunos de los pogramas que son software libre, que ventajas de utilizar software libre para la docencia y la investigación en matemática. #12;¿Por qué

De Nápoli, Pablo Luis

113

Teorema de Linearizacao para Fluxo Fuzzy  

Microsoft Academic Search

O objetivo deste trabalhoe estudar os sis- temas dinamicos fuzzy associados a sistemas de- termin´õsticos autonomos. O Princ´õpio de Ex- tensao de Zadehe utilizado para se obter o fluxo fuzzy de tais sistemas. ´ E apresentado um teorema de linearizacao fuzzy, como uma gen- eralizacao do Teorema de Grobman-Hartman, para a caracterizacao da estabilidade local dos equil´õbrios dos sistemas fuzzy

Marina T. Mizukoshi; Laecio C. Barros; Rodney C. Bassanezi

114

Tecnologa para todos Sistema Inalmbrico de Rice  

E-print Network

Tecnología para todos Sistema Inalámbrico de Rice Andrea Trevino Rice University http://www.techforall.org/tfa_wireless.html http://tfa.rice.edu #12;Por qué en Pecan Park? La Misión de TFA: Proporcionar conocimientos a la comunidad. El propósito de Rice: Usar este programa para explorar la siguiente generación del sistema

115

The ParaScope parallel programming environment  

NASA Technical Reports Server (NTRS)

The ParaScope parallel programming environment, developed to support scientific programming of shared-memory multiprocessors, includes a collection of tools that use global program analysis to help users develop and debug parallel programs. This paper focuses on ParaScope's compilation system, its parallel program editor, and its parallel debugging system. The compilation system extends the traditional single-procedure compiler by providing a mechanism for managing the compilation of complete programs. Thus, ParaScope can support both traditional single-procedure optimization and optimization across procedure boundaries. The ParaScope editor brings both compiler analysis and user expertise to bear on program parallelization. It assists the knowledgeable user by displaying and managing analysis and by providing a variety of interactive program transformations that are effective in exposing parallelism. The debugging system detects and reports timing-dependent errors, called data races, in execution of parallel programs. The system combines static analysis, program instrumentation, and run-time reporting to provide a mechanical system for isolating errors in parallel program executions. Finally, we describe a new project to extend ParaScope to support programming in FORTRAN D, a machine-independent parallel programming language intended for use with both distributed-memory and shared-memory parallel computers.

Cooper, Keith D.; Hall, Mary W.; Hood, Robert T.; Kennedy, Ken; Mckinley, Kathryn S.; Mellor-Crummey, John M.; Torczon, Linda; Warren, Scott K.

1993-01-01

116

Production of L-asparaginase, an anticancer agent, from Aspergillus niger using agricultural waste in solid state fermentation.  

PubMed

This article reports the production of high levels of L-asparaginase from a new isolate of Aspergillus niger in solid state fermentation (SSF) using agro-wastes from three leguminous crops (bran of Cajanus cajan, Phaseolus mungo, and Glycine max). When used as the sole source for growth in SSF, bran of G. max showed maximum enzyme production followed by that of P. mungo and C. cajan. A 96-h fermentation time under aerobic condition with moisture content of 70%, 30 min of cooking time and 1205-1405 micro range of particle size in SSF appeared optimal for enzyme production. Enzyme yield was maximum (40.9 +/- 3.35 U/g of dry substrate) at pH 6.5 and temperature 30 +/- 2 degrees C. The optimum temperature and pH for enzyme activity were 40 degrees C and 6.5, respectively. The study suggests that choosing an appropriate substrate when coupled with process level optimization improves enzyme production markedly. Developing an asparaginase production process based on bran of G. max as a substrate in SSF is economically attractive as it is a cheap and readily available raw material in agriculture-based countries. PMID:17057254

Mishra, Abha

2006-10-01

117

Conservation in Soil of H2 Liberated from N2 Fixation by Hup- Nodules  

PubMed Central

Pigeon peas (Cajanus cajan) were grown in large soil columns (90-cm length by 30-cm diameter) and inoculated with four different strains of cowpea rhizobia, which varied with respect to hydrogen uptake activity (Hup). Despite the profuse liberation of H2 from Hup- nodules in vitro, H2 gas was not detected in any of the soil columns. When H2 was injected into the columns, the rates of consumption were highest in the treatments (including control) containing Hup- nodules (218 and 177 nmol · h?1 · cm?2) and lowest in the Hup+ treatments (158, 92, and 64 nmoles · h?1 · cm?2). In situ H2 uptake rates in small soil cores at fixed distances from the nodules decreased exponentially with distance from the nodule (R2 = 0.99). This decrease in H2 consumption was associated with a similar decrease in numbers of H2-oxidizing chemolithotrophic bacteria as determined by the most-probable-number method. On the basis of two equations derived separately upon diffusive theory (Fix's Law) and kinetic theory (Michaelis-Menten), the empirically derived rate constants and coefficients indicated that all of the H2 emitted from Hup- nodules would be consumed by H2-oxidizing bacteria within a 3- to 4.5-cm radius of the nodule surface. It is concluded that H2 is not lost from the soil-plant ecosystem during N2 fixation in C. cajan but is conserved by H2-oxidizing bacteria. PMID:16346356

La Favre, J. S.; Focht, D. D.

1983-01-01

118

Bolseiros em protesto. "Para a banca milhes,  

E-print Network

segunda vez a candida- tura a bolsa de doutoramento. Em 179 candidatos entraram 12. Ele era o 14.° e acha para os animais já houve dificuldades", diz. David Gomes e Ana Silva, de 23 e 24 anos, estão a começar

Instituto de Sistemas e Robotica

119

DOCUMENTAO PARA INGRESSO POR TRANSFERNCIA EXTERNA  

E-print Network

aceita); - Título de Eleitor; - Certificado de Dispensa de Incorporação; - CPF. Se candidato estrangeiro: - Certidão de Nascimento ou Casamento com tradução juramentada; - Carteira de Identidade; - CPF; - Passaporte de Dispensa de Incorporação (Apenas para alunos brasileiros) - Cópia do CPF - Cópia do Passaporte com

120

Siete principios psicosociales para explicar el terrorismo  

Microsoft Academic Search

Este artículo describe las bases para una aproximación psicosocial al análisis de los fenómenos terro- ristas. Más concretamente, se exponen siete principios explicativos del terrorismo que sean congruen- tes con los supuestos metateóricos y el cuerpo de conocimientos propios de la Psicología social. Des- de esta óptica el terrorismo se concibe como una estrategia de influencia sociopolítica. Los atributos psicológicos

Luis de la Corte; Arie Kruglanski; Jesús de Miguel; José Manuel Sabucedo; Darío Díaz

2007-01-01

121

CUATRO PREGUNTAS PARA INICIARSE EN CAMBIO ORGANIZACIONAL  

Microsoft Academic Search

RESUMEN El presente artículo llega a un concepto sobre el cambio organizacional a partir de las respuestas que ofrece a cuatro preguntas: ¿Qué es lo que cambia en las organizaciones?, ¿Por qué cambian las organizaciones?, ¿Cómo cambian las organizaciones? y -entonces- ¿Qué es el cambio organizacional? Para lograr el propósito se toma como objeto a las organizaciones empresariales y se

Carlos A. Acosta

2002-01-01

122

Gua para Estudiantes Internacionales International Student Guide  

E-print Network

derecho y hasta un cuarto de computadores exclusivo para estudiantes de postgrado en derecho. Los Informática de la Salud l Salud Pública y Promoción de la Salud l Psicología Derecho Criminalística l Derecho Marítimo Internacional l Derecho Comercial Internacional l Derecho Comercial Internacional y Derecho

Martin, Ralph R.

123

PROJECTO LEXNET OLHA PARA AS REDES WIRELESS  

E-print Network

PROJECTO LEXNET OLHA PARA AS REDES WIRELESS As radiações provocadas pelas redes sem fios estão. PAG. 6 #12;Radiações das redes wireless debaixo de olho O projecto europeu Lexnet tem como objectivo redes de comunicações móveis, GSM, Wi-Fi, rá- dio, sem comprometer a qualidade dos ser- viços. Tendo

Instituto de Sistemas e Robotica

124

Teorias Topologicas Cuanticas de Campos para Principiantes  

E-print Network

Teor´ias Topol´ogicas Cu´anticas de Campos para Principiantes ´o The Unreasonable Effectiveness #12;Teor´ia de Yang-Mills - Ecuaciones Supongamos que E Mn es un G-haz vectorial sobre una n electrodin´amica cl´asica. #12;Teor´ia de Yang-Mills - Simetr´ias Yang-Mills es un ejemplo de una teor´ia de

125

TELEMEDICINA: UN DESAFÍO PARA AMÉRICA LATINA  

PubMed Central

La telemedicina es una tendencia creciente en la prestación de los servicios médicos. Aunque la eficacia de esta práctica no ha estado bien establecida, es probable que los países en desarrollo compartirán este nuevo paradigma con los desarrollados. Los defensores de la telemedicina en América Latina sostienen que será una herramienta útil para reducir las disparidades y mejorar la accesibilidad de atención de salud. Aunque América Latina quizá se convierta en un lugar para la investigación e investigación de estos procedimientos, no está claro cómo la telemedicina podría contribuir a mejorar la accesibilidad para las poblaciones desfavorecidas, o coexistir con sistemas de atención de salud públicos crónicamente enfermos. Telemedicine is a growing trend in the provision of medical services. Although the effectiveness of this practice has not been well established, it is likely that developing countries will share this new paradigm with developed ones. Supporters of telemedicine in Latin America maintain that it will be a useful tool for reducing disparities and improving health care accessibility. Although Latin America might become a place for research and investigation of these procedures, it is not clear how telemedicine could contribute to improving accessibility for disadvantaged populations, or coexist with chronically ill-funded public healthcare systems. PMID:21625326

Litewka, Sergio

2011-01-01

126

Centro para la Salud Mundial (CGH) del NCI  

Cancer.gov

El Centro para la Salud Mundial (CGH) del Instituto Nacional del Cáncer coordina actividades de investigación y trabaja con socios nacionales e internacionales para comprender y enfrentar la carga que representa el cáncer a nivel mundial.

127

Guía técnica para el análisis de instituciones financieras microempresariales  

Microsoft Academic Search

El propósito que se pretende obtener con la publicación de esta Guía es proporcionar un formato estándar para el análisis de instituciones que prestan servicios financieros al sector de la microempresa. Esta Guía da a conocer todas aquellas técnicas y el análisis necesario para la evaluación y el diseño de programas de apoyo para instituciones financieras especializadas. Las técnicas analíticas

Mark Flaming; Martin Holtmann; Rochus Mommartz

1999-01-01

128

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

Contiene información sobre las medicinas contra el dolor para pacientes con cáncer, los planes para controlarlo, cómo hablar con su equipo de atención médica sobre el dolor que usted siente y qué hacer para controlar los efectos físicos y emocionales del mismo.

129

Convocatoria de Becas del Gobierno de Mxico para Extranjeros 2011  

E-print Network

, especialidades médicas, para realizar investigaciones a nivel de posgrado, estancias posdoctorales, movilidad posdoctorales · 3 a 5 meses para programas de movilidad a nivel posgrado. SIN POSIBILIDAD DE PR�RROGA EN TODOS documentos originales. · Para las becas de movilidad de posgrado, se debe contar con la carta de aceptación

Jeanjean, Louis

130

Technological Foresight - Um instrumento para política científica e tecnológica1  

Microsoft Academic Search

Este texto tem por objetivo apresentar a abordagem de technological foresight2, crescentemente utilizada em vários países como instrumento para a alocação de fundos públicos de C&T, para definição de priorida- des de pesquisa e para melhorar a articulação das organizações de pes- quisa com as redes de inovação e o setor produtivo. São discutidas suas bases teóricas, suas principais características

MAURO ZACKIEWICZ; SÉRGIO SALLES-FILHO

131

Allergic contact dermatitis to para-phenylenediamine.  

PubMed

Exposure to hair dye is the most frequent route of sensitisation to para-phenylenediamine (PPD), a common contact allergen. International studies have examined the profile of PPD, but Australian-sourced information is lacking. Patients are often dissatisfied with advice to stop dyeing their hair. This study examines patients' characteristics, patch test results and outcomes of PPD allergy from a single Australian centre, through a retrospective analysis of patch test data from 2006 to 2013 at the Liverpool Hospital Dermatology Department. It reviews the science of hair dye allergy, examines alternative hair dyes and investigates strategies for hair dyeing. Of 584 patients, 11 were allergic to PPD. Our PPD allergy prevalence rate of 2% is at the lower end of international reported rates. About half these patients also react to para-toluenediamine (PTD). Affected patients experience a significant lifestyle disturbance. In all, 78% tried alternative hair dyes after the patch test diagnosis and more than half continued to dye their hair. Alternative non-PPD hair dyes are available but the marketplace can be confusing. Although some patients are able to tolerate alternative hair dyes, caution is needed as the risk of developing an allergy to other hair dye ingredients, especially PTD, is high. PMID:25302475

Jenkins, David; Chow, Elizabeth T

2014-10-10

132

On Ensino de Astronomia: Desafios para Implantação  

NASA Astrophysics Data System (ADS)

Em 2002 o ensino de Astronomia foi proposto como um dos temas estruturadores pelos Parâmetros Curriculares Nacionais e sugerido como facilitador para que o aluno compreendesse a Física como construção humana e parte do seu mundo vivencial, mas raramente seus conceitos foram ensinados. A presente pesquisa discute dois aspectos relacionados à abordagem de Astronomia. O primeiro aspecto é se ela está sendo abordada pelos professores do Ensino Médio e o segundo, aborda a maneira como ela está sendo ensinada. Optou-se pela aplicação de um questionário a partir do 2° semestre de 2006 e durante o ano de 2007 com professores que ministram a disciplina de Física, os quais trabalham em escolas estaduais em Rio Grande da Serra, Ribeirão Pires e Mauá no estado São Paulo. Dos 66,2% dos professores que responderam ao questionário nos municípios de Rio Grande da Serra, Ribeirão Pires e Mauá, 57,4% não aplicaram nenhum tópico de astronomia, 70,2% não utilizaram laboratório, 89,4% não utilizaram qualquer tipo de programa computacional, 83,0% nunca fizeram visitas com alunos a museus e planetários e 38,3% não indicaram qualquer tipo de livro ou revista referente à astronomia aos seus alunos. Mesmo considerando a Astronomia um conteúdo potencialmente significativo, esta não fez parte dos planejamentos escolares. Portanto são necessárias propostas que visem estratégias para a educação continuada dos professores como, por exemplo, cursos específicos sobre o ensino em Astronomia.

Faria, R. Z.; Voelzke, M. R.

2008-09-01

133

Más para ellas - Sugerencias para cerrar la brecha entre géneros en las regiones en desarrollo  

Microsoft Academic Search

Según el pensamiento convencional, la salud y la educación son factores esenciales para el desarrollo económico y social: permiten mejorar la distribución del ingreso y la productividad, y además, los más beneficiados son los pobres. Sin embargo, en muchas regiones del mundo no todos los miembros de la sociedad reciben estos servicios equitativamente. En muchos casos las mujeres están excluidas

Alessandro Magnoli

2005-01-01

134

On Lightlike Geometry of Para-Sasakian Manifolds  

PubMed Central

We study lightlike hypersurfaces of para-Sasakian manifolds tangent to the characteristic vector field. In particular, we define invariant lightlike hypersurfaces and screen semi-invariant lightlike hypersurfaces, respectively, and give examples. Integrability conditions for the distributions on a screen semi-invariant lightlike hypersurface of para-Sasakian manifolds are investigated. We obtain a para-Sasakian structure on the leaves of an integrable distribution of a screen semi-invariant lightlike hypersurface. PMID:24892072

Acet, Bilal Eftal; K?l?ç, Erol

2014-01-01

135

Hedlena Maria de Almeida Coloriza 3D para  

E-print Network

Hedlena Maria de Almeida Bezerra Colorizaçã 3D para Animação 2D DISSERTA��O DE MESTRADO Maria de Almeida Bezerra Colorizaçã 3D para Animação 2D Dissertação de Mestrado Dissertação apresentada. Velho Rio de Janeiro Maio de 2005 #12;Hedlena Maria de Almeida Bezerra Colorizaçã 3D para Animação 2D

136

Ortho-para conversion of interstitial H2 in Si.  

PubMed

Ortho-para conversion of isolated interstitial H2 in single-crystalline Si is studied by Raman scattering. This process is suggested to be caused by the interaction of H2 with the nuclear magnetic moment of 29Si. At 77 K the ortho-to-para conversion rate is approximately 0.015 h(-1) for all Si samples employed in the experiments. At 300 K, the reverse para-to-ortho transition is observed. It occurs with a rate of roughly 0.18 h(-1) and results in a thermodynamically nonequilibrium ortho-para ratio. PMID:17358873

Hiller, M; Lavrov, E V; Weber, J

2007-02-01

137

Cooling by Para-to-Ortho-Hydrogen Conversion  

NASA Technical Reports Server (NTRS)

Catalyst speeds conversion, increasing capacity of solid hydrogen cooling system. In radial-flow catalytic converter, para-hydrogen is converted to equilibrium mixture of para-hydrogen and ortho-hydrogen as it passes through porous cylinder of catalyst. Addition of catalyst increases capacity of hydrogen sublimation cooling systems for radiation detectors.

Sherman, A.; Nast, T.

1983-01-01

138

METODOLOGÍA PARA LA COORDINACIÓN DEL TRABAJO SOCIOCULTURAL COMUNITARIO  

Microsoft Academic Search

La cultura como conjunto de relaciones humanas que ha transcendido en el tiempo y que le permite al hombre conservar, reproducir, crear nuevos conocimientos y valores para la transformación de su medio social y cultural, cada día cobra mayor importancia como sostén fundamental para la satisfacción de las necesidades espirituales y como elemento de influencia directa en la producción de

Ricardo Enoa Leyva; Florentino Montes de Oca Ruiz

2011-01-01

139

Uso del Contexto para la Búsqueda de Respuestas en Español  

Microsoft Academic Search

Resumen. Actualmente, la creciente cantidad de información disponible en medios electrónicos representa un reto para la evolución de los mecanismos de acceso y recuperación de la misma. Recientemente los sistemas de Búsqueda de Respuestas (BR) han reaparecido como una alternativa viable a este reto. A pesar su potencial el desarrollo de este tipo de sistemas para el idioma Español aún

Manuel Pérez-Coutiño; Manuel Montes-y-Gómez; Aurelio López-López; Luis Enrique

140

Recogido de Datos Pblicos: Gua para los Lmites Anuales de  

E-print Network

Recogido de Datos Públicos: Guía para los Límites Anuales de Captura (ACLs) y Medidas de;3 Límites Anuales de Captura (ACLs) y Medidas de Responsabilidad (AMs) · ACLs y AMs funcionan en conjunto como un sistema para asegurar que no ocurra sobrepesca · ACLs y AMs deberán: ­ Terminar la sobrepesca

141

App. Android Accesible para una Rutina de Movilidad Articular y  

E-print Network

App. Android Accesible para una Rutina de Movilidad Articular y Espalda M. Redondo, H. García parte del tiempo · Disponible el Google Play · Gratuita · App futuras: ­ Pruebas de campo Origen: App para tonificación muscular · "Tono muscular, también conocido como tensión muscular residual

Boemo, Eduardo

142

Towards a double field theory on para-Hermitian manifolds  

SciTech Connect

In a previous paper, we have shown that the geometry of double field theory has a natural interpretation on flat para-Kähler manifolds. In this paper, we show that the same geometric constructions can be made on any para-Hermitian manifold. The field is interpreted as a compatible (pseudo-)Riemannian metric. The tangent bundle of the manifold has a natural, metric-compatible bracket that extends the C-bracket of double field theory. In the para-Kähler case, this bracket is equal to the sum of the Courant brackets of the two Lagrangian foliations of the manifold. Then, we define a canonical connection and an action of the field that correspond to similar objects of double field theory. Another section is devoted to the Marsden-Weinstein reduction in double field theory on para-Hermitian manifolds. Finally, we give examples of fields on some well-known para-Hermitian manifolds.

Vaisman, Izu [Department of Mathematics, University of Haifa, Haifa (Israel)] [Department of Mathematics, University of Haifa, Haifa (Israel)

2013-12-15

143

Dissociative recombination of highly enriched para-H3+.  

PubMed

The determination of the dissociative recombination rate coefficient of H(3) (+) has had a turbulent history, but both experiment and theory have recently converged to a common value. Despite this convergence, it has not been clear if there should be a difference between the rate coefficients for ortho-H(3) (+) and para-H(3) (+). A difference has been predicted theoretically and could conceivably impact the ortho:para ratio of H(3) (+) in the diffuse interstellar medium, where H(3) (+) has been widely observed. We present the results of an experiment at the CRYRING ion storage ring in which we investigated the dissociative recombination of highly enriched ( approximately 83.6%) para-H(3) (+) using a supersonic expansion source that produced ions with T(rot) approximately 60-100 K. We observed an increase in the low energy recombination rate coefficient of the enriched para-H(3) (+) by a factor of approximately 1.25 in comparison to H(3) (+) produced from normal H(2) (ortho:para=3:1). The ratio of the rate coefficients of pure para-H(3) (+) to that of pure ortho-H(3) (+) is inferred to be approximately 2 at low collision energies; the corresponding ratio of the thermal rate coefficients is approximately 1.5 at electron temperatures from 60 to 1000 K. We conclude that this difference is unlikely to have an impact on the interstellar ortho:para ratio of H(3) (+). PMID:19173501

Tom, Brian A; Zhaunerchyk, Vitali; Wiczer, Michael B; Mills, Andrew A; Crabtree, Kyle N; Kaminska, Magdalena; Geppert, Wolf D; Hamberg, Mathias; Af Ugglas, Magnus; Vigren, Erik; van der Zande, Wim J; Larsson, Mats; Thomas, Richard D; McCall, Benjamin J

2009-01-21

144

Construction of a Para-Ortho Hydrogen Test Cryostat  

NASA Astrophysics Data System (ADS)

In a prospective hydrogen economy it is necessary to verify the para concentration of the employed hydrogen. In case of a short storage time of about a few days only it has been shown that a partial conversion into para-hydrogen gives an optimized overall efficiency. Hence, an easy and reliable method of measuring the para-hydrogen concentration is needed. In this paper, the concept and construction of a small test cryostat are described and first results are presented. The measuring principle is based on a catalytic induced adiabatic ortho-para conversion of a hydrogen gas flow starting from a known temperature. The operation of the system only requires a certain amount of liquid nitrogen as coolant. To determine the concentration of para-hydrogen it is only necessary to measure the temperature of the gas before and after the adiabatic catalyst cell. The measuring cryostat is used for further investigation of the spontaneous para-ortho conversion in the supercritical state. In addition, the design of the cryostat allows the investigation of different catalyst materials regarding the catalytic activity and possible degradation by using a known para concentration for the measurement.

Essler, J.; Haberstroh, Ch.

2010-04-01

145

40 CFR 721.9520 - Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye (generic).  

Code of Federal Regulations, 2010 CFR

... false Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...9520 Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...generically as methylated-para-rosaniline salt of a trisulfonated triarylmethane...

2010-07-01

146

40 CFR 721.9520 - Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye (generic).  

Code of Federal Regulations, 2013 CFR

... false Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...9520 Methylated-para-rosaniline salt of a trisulfonated triarylmethane dye...generically as methylated-para-rosaniline salt of a trisulfonated triarylmethane...

2013-07-01

147

La terapia hormonal para la menopausia y el cáncer  

Cancer.gov

Hoja informativa acerca de los resultados de los estudios sobre el uso de la terapia hormonal para la menopausia. Incluye información sobre el efecto de esta terapia en el cuerpo y explica los riesgos y beneficios del uso de hormonas.

148

Control del dolor: Apoyo para las personas con cáncer  

Cancer.gov

Libro sobre el control del dolor en pacientes con cáncer. Cubre los métodos y medicinas, así como los efectos físicos y emocionales del dolor. Es una adaptación cultural para el público de habla hispana del libro en inglés Pain Control.

149

ParaDiS-FEM dislocation dynamics simulation code primer  

SciTech Connect

The ParaDiS code is developed to study bulk systems with periodic boundary conditions. When we try to perform discrete dislocation dynamics simulations for finite systems such as thin films or cylinders, the ParaDiS code must be extended. First, dislocations need to be contained inside the finite simulation box; Second, dislocations inside the finite box experience image stresses due to the free surfaces. We have developed in-house FEM subroutines to couple with the ParaDiS code to deal with free surface related issues in the dislocation dynamics simulations. This primer explains how the coupled code was developed, the main changes from the ParaDiS code, and the functions of the new FEM subroutines.

Tang, M; Hommes, G; Aubry, S; Arsenlis, A

2011-09-27

150

Consejos para cuando le duelan la boca o la garganta  

Cancer.gov

Información para personas que están recibiendo radioterapia y consejos sobre cómo controlar las molestias en la boca y garganta, sentirse mejor durante el tratamiento y comunicarse con su doctor o enfermera.

151

ParaWeb: towards world-wide supercomputing  

Microsoft Academic Search

In this paper, we describe the design of a system, called ParaWeb, for utilizing Internet or intra-net computing resources in a seamless fashion. The goal is to allow users to execute serial programs on faster compute servers or parallel programs on a variety of possibly heterogeneous hosts. ParaWeb provides extensions to the Java programming environment (through a parallel class library)

Tim Brecht; Harjinder S. Sandhu; Meijuan Shan; Jimmy Talbot

1996-01-01

152

Cooling by conversion of para to ortho-hydrogen  

NASA Technical Reports Server (NTRS)

The cooling capacity of a solid hydrogen cooling system is significantly increased by exposing vapor created during evaporation of a solid hydrogen mass to a catalyst and thereby accelerating the endothermic para-to-ortho transition of the vapor to equilibrium hydrogen. Catalyst such as nickel, copper, iron or metal hydride gels of films in a low pressure drop catalytic reactor are suitable for accelerating the endothermic para-to-ortho conversion.

Sherman, A. (inventor)

1983-01-01

153

Para hydrogen equilibration in the atmospheres of the outer planets  

NASA Technical Reports Server (NTRS)

The thermodynamic behavior of the atmospheres of the Jovian planets is strongly dependent on the extent to which local thermal equilibration of the ortho and para states of molecular hydrogen is achieved. Voyager IRIS data from Jupiter imply substantial departures of the para hydrogen fraction from equilibrium in the upper troposphere at low latitudes, but with values approaching equilibrium at higher latitudes. Data from Saturn are less sensitive to the orth-para ratio, but suggest para hydrogen fractions near the equilibrium value. Above approximately the 200 K temperature level, para hydrogen conversion can enhance the efficiency of convection, resulting in a substantial increase in overturning times on all of the outer planets. Currently available data cannot definitively establish the ortho-para ratios in the atmospheres of Uranus and Neptune, but suggest values closer to local equilibrium than to the 3.1 normal ratio. Modeling of sub-millimeter wavelength measurements of these planets suggest thermal structures with frozen equilibrium lapse rates in their convective regions.

Conrath, Barney J.

1986-01-01

154

Sistemas Correctores de Campo Para EL Telescopio Cassegrain IAC80  

NASA Astrophysics Data System (ADS)

El proyecto de instrumentación de mayor importancia que ha tenido el Instituto de Astrofisica de Canarias en los últimos afios ha sido el diseflo y construcción del te1escopio IAC8O. Este requería del esfuerzo con junto en mec´nica, óptica y electrónica, lo que facilitó la estructuración y el crecimiento de los respectivos grupos de trabajo, que posteriormente se integraron en departamentos En su origen (1977), el telescopio IAC80 fue concebido como un sistema clásico tipo Cassegrain, con una razón focal F/i 1.3 para el sistema Casse grain y una razón focal F/20 para el sistema Coudé. Posteriormente, aunque se mantuvo la filosofia de que el sistema básico fuera el F/11.3, se consideró conveniente el diseño de secundarios para razones focales F/16 y F/32, y se eliminó el de F/20. Sin embargo, dada la importancia relativa que un foco estrictamente fotográfico tiene en un telescopio moderno, diseñado básicamente para fotometría fotoeléctrica y con un campo util mínimamente de 40 minutos de arco, se decídió Ilevar a cabo el diseño de un secundario F/8 con un sistema corrector de campo, pero que estuviera formado únicamente por lentes con superficies esféricas para que asl su construcción fuera posible en España ó en México. La creciente utilización de detectores bidimensionales para fines de investigación astron6mica y la viabilidad de que en un futuro cercano éstos tengan un área sensible cada vez mayor, hicieron atractiva la idea de tener diseñado un sistema corrector de campo para el foco primario (F/3), con un campo útil mínimo de un grado, y también con la limitante de que sus componentes tuvieron sólamente supérficies esféricas. Ambos diseños de los sis-temas correctores de campo se llevaron a cabo, en gran medida, como parte de un proyecto de colaboración e intercambio en el área de diseño y evaluación de sistemas ópticos.

Galan, M. J.; Cobos, F. J.

1987-05-01

155

ParaText : scalable text modeling and analysis.  

SciTech Connect

Automated processing, modeling, and analysis of unstructured text (news documents, web content, journal articles, etc.) is a key task in many data analysis and decision making applications. As data sizes grow, scalability is essential for deep analysis. In many cases, documents are modeled as term or feature vectors and latent semantic analysis (LSA) is used to model latent, or hidden, relationships between documents and terms appearing in those documents. LSA supplies conceptual organization and analysis of document collections by modeling high-dimension feature vectors in many fewer dimensions. While past work on the scalability of LSA modeling has focused on the SVD, the goal of our work is to investigate the use of distributed memory architectures for the entire text analysis process, from data ingestion to semantic modeling and analysis. ParaText is a set of software components for distributed processing, modeling, and analysis of unstructured text. The ParaText source code is available under a BSD license, as an integral part of the Titan toolkit. ParaText components are chained-together into data-parallel pipelines that are replicated across processes on distributed-memory architectures. Individual components can be replaced or rewired to explore different computational strategies and implement new functionality. ParaText functionality can be embedded in applications on any platform using the native C++ API, Python, or Java. The ParaText MPI Process provides a 'generic' text analysis pipeline in a command-line executable that can be used for many serial and parallel analysis tasks. ParaText can also be deployed as a web service accessible via a RESTful (HTTP) API. In the web service configuration, any client can access the functionality provided by ParaText using commodity protocols ... from standard web browsers to custom clients written in any language.

Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

2010-06-01

156

Hox and ParaHox genes: A review on molluscs.  

PubMed

Hox and ParaHox genes are involved in patterning the anterior-posterior body axis in metazoans during embryo development. Body plan evolution and diversification are affected by variations in the number and sequence of Hox and ParaHox genes, as well as by their expression patterns. For this reason Hox and ParaHox gene investigation in the phylum Mollusca is of great interest, as this is one of the most important taxa of protostomes, characterized by a high morphological diversity. The comparison of the works reviewed here indicates that species of molluscs, belonging to different classes, share a similar composition of Hox and ParaHox genes. Therefore evidence suggests that the wide morphological diversity of this taxon could be ascribed to differences in Hox gene interactions and expressions and changes in the Hox downstream genes rather than to Hox cluster composition. Moreover the data available on Hox and ParaHox genes in molluscs compared with those of other Lophotrochozoa shed light on the complex and controversial evolutionary histories that these genes have undergone within protostomes. genesis 52:935-945, 2014. © 2014 Wiley Periodicals, Inc. PMID:25394269

Biscotti, Maria Assunta; Canapa, Adriana; Forconi, Mariko; Barucca, Marco

2014-12-01

157

El uso de la neuromodulación para el tratamiento del temblor  

PubMed Central

Introducción: El temblor puede ser un desorden incapacitante y el tratamiento de primera línea para estos pacientes es farmacológico. Sin embargo, este tratamiento puede llevar a una reducción satisfactoria del temblor en sólo el 50% de los pacientes con temblor esencial. La talamotomía era el tratamiento de elección para el temblor refractario al tratamiento médico hasta que comenzó a utilizarse la estimulación cerebral profunda (ECP) del núcleo ventral intermedio (Vim) del tálamo. En la actualidad, raramente se realiza la talamotomía. Métodos: Este artículo es una revisión no sistemática de las indicaciones, resultados, parámetros de programación y técnica quirúrgica de la ECP del Vim para el tratamiento del temblor. Resultados: Aunque los resultados clínicos son similares usando la talamotomía o la ECP del Vim, la primera causa más efectos adversos que la última. Además, la ECP puede ser usada bilateralmente, mientras que la talamotomía tiene un alto riesgo de causar disartria cuando se realiza de ambos lados. La ECP del Vim logró una adecuada mejoría del temblor en varias series de pacientes con temblor causado por temblor esencial, enfermedad de Parkinson o esclerosis múltiple. Además del Vim, hay otros blancos que están siendo usados por varios autores, tales como la zona incerta y las radiaciones prelemniscales. Conclusión: La ECP del Vim es un tratamiento útil para el temblor incapacitante refractario al tratamiento médico. Es esencial realizar una precisa selección de pacientes, así como utilizar una técnica quirúrgica correcta. Aún se desconoce el mejor blanco estereotáctico para el temblor, aunque el Vim es el más usado. PMID:25165613

Bendersky, Damián; Ajler, Pablo; Yampolsky, Claudio

2014-01-01

158

Accesibilidad para personas con debilidad auditiva Mac OS X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad auditiva Mac OS X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 14 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD AUDITIVA EN ENTORNO MAC OS X SNOW LEOPARD MAC OS X Snow Leopard ofrece algunas ayudas para personas sordas o con problemas para escuchar

Fernández de Córdoba, Pedro

159

Stent grafting a ruptured para-anastomotic iliac aneurysm.  

PubMed

In this case report, we present an 83-year-old man with a ruptured para-anastomotic aneurysm who underwent a stent graft in spite of his condition of acute shock. Our patient presented at the emergency room (ER) with acute abdominal pain. Shortly after arrival, he collapsed because of a ruptured para-anastomotic aneurysm after the previous aorto-bi-iliac aneurysm repair in 1984. He was charged with a cardiac history that made him unsuitable for surgery. We chose for resuscitation followed by inflation of an aortic balloon that made the patient hemodynamically stable. He then underwent iliac stent grafting and was discharged from the hospital at 22 days after the procedure. The mortality rate of patients with a ruptured para-anastomotic aortic aneurysm arriving at hospital ranges from 32% to 70%. Endovascular stent placement for ruptured iliac aneurysmal arteries can be a safe treatment in selected patients. PMID:20538732

Menke, Vivianda; Castenmiller, Peter H; Versteijlen, Rob J; Van der Laan, Lijckle

2010-08-01

160

Pasanta en TICs para el Carlos Rey Moreno  

E-print Network

1 Pasantía en TICs para el desarrollo Carlos Rey Moreno I.T.T Sistemas de Telecomunicación UC3M MSc;2 Búsqueda de Pasantía Pasantía sobre TICs en país anglófono Desmoralización en la búsqueda: Conocimientos sobre TICs con ONG española ISF o Fundación EHAS Actividades académicas en Cooperación para el

Autonoma de Madrid, Universidad

161

Acerca del Centro para la Salud Mundial del NCI  

Cancer.gov

El Centro para la Salud Mundial (CGH) coordina y fija las prioridades en las actividades que lleva a cabo el Instituto Nacional del Cáncer a nivel mundial. Su objetivo es avanzar la investigación mundial del cáncer y reducir las muertes causadas por esta enfermedad.

162

Proyeccion de datos para la construccion de estados financieros  

Microsoft Academic Search

Este es material de curso del libro Decisiones Empresariales bajo Riesgo e Incertidumbre. El nivel del libro es basico. Se usan muy pocas matematicas y puede ser usado por gerentes. El capitulo cinco trata acerca de la preparacion y uso de la informacion para hacer proyecciones de estados financieros. En este capitulo se muestra paso a paso como proyectar apropiadamente

Ignacio Velez-Pareja

2009-01-01

163

Instrumentos para el desarrollo de dueños de pequeñas tierras forestales  

Microsoft Academic Search

Una de las formas de enfrentar los problemas derivados de la fragmentación de las tierras de vocación forestal (TVF) es la adopción de estrategias de intervención que lleven a la integración de las pequeñas propiedades en unidades productivas mayores o que permitan la utilización de tecnologías propias para propiedades mayores. Este es uno de los resultados del estudio \\

José Rente Nascimento; José Luis B. Mota Villanueva

2004-01-01

164

SERVICIOS DE RECUPERACIN DE DESASTRES DISPONIBLES PARA USTED  

E-print Network

Management Agency, FEMA) tiene un Programa de Asistencia Individual que ayuda a financiar necesidades y cumple con los requisitos para recibir asistencia, llame al 1(800) 621-FEMA(3362) o visite www.fema desastre mas cercano llamando al 1(800) 621- 3362 o visitando www.fema

165

Uma aplicação Web para análise de exames Cardio- Respiratórios  

Microsoft Academic Search

This paper describes a web-application in development to help on the analysis of cardiorespiratory system of health and pathological subjects. The software helps health professionals in rehabilitation tasks as also in prevention of cardiorespiratory diseases. Resumo. Este artigo descreve uma aplicação web em desenvolvimento para auxiliar na análise e interpretação de resultados de exames que avaliam o sistema cardiorrespiratório de

Maria Angelica de Oliveira; Camargo Brunetto; André Luis Debiaso Rossi

166

Alunos convocados para o Enade 2012* ADRIANA FERREIRA RIBEIRO  

E-print Network

DIREITO Alunos convocados para o Enade 2012* ADRIANA FERREIRA RIBEIRO ADRIANA SANTOS LONARDI LUIZA AGHINA FERREIRA ANTONIA GENOBIE ANTONIO GIL ANTONIO CARLOS AMORIM CASTELLO BRANCO ANTONIO DE QUEIROZ BUENO DO PRADO ARIANE ALEXANDRINA DE SOUZA TEIXEIRA ARIANE BAARS ARTUR LARA FERREIRA BARBARA

167

Propuesta de modelo financiero para crecimiento corporativo sostenible  

Microsoft Academic Search

Aspectos como la capacidad técnica y económica en la producción de bienes y servicios, la gestión administrativa y financiera, y las políticas de comercialización o mercadeo, son determinantes para el crecimiento sostenible de las organizaciones, entendido como un proceso dinámico que tiene efecto en la creación de valor de las mismas. El objetivo fundamental de este trabajo es definir un

Giovanni E. Reyes; Andrea Briceño M

2010-01-01

168

Terapias adyuvantes y neoadyuvantes para el cáncer de seno  

Cancer.gov

Hoja informativa que explica las terapias adyuvantes (tratamiento que se administra además de la terapia primaria para aumentar la posibilidad de supervivencia a largo plazo) y las neoadyuvantes (terapia que se administra antes de la terapia principal). Contiene información sobre los efectos secundarios y sobre los riesgos y beneficios de estas terapias.

169

DOCUMENTAO PARA INGRESSO COMO PORTADOR DE DIPLOMA DE  

E-print Network

; - Certificado de Dispensa de Incorporação; - CPF; Se candidato estrangeiro: - Certificado de Conclusão de de Identidade; - CPF; - Passaporte, onde deverá constar o visto de estudante / permanência atualizado Dispensa de Incorporação (Apenas para alunos brasileiros) - Cópia do CPF - Cópia do Certificado de

170

ELABORACION DE ALGORITMOS DE PRUEBA PARA RELES DE PROTECCION  

E-print Network

protección de naturaleza electrónica digital; estos mismos, para su control periódico requieren de pruebas, transforming, generators and cables, the same that are watched over protective devices of digital electronic agile and optimizes the management of maintenance of the substations. The present work this oriented

Boyer, Edmond

171

Estudiar las redes sociales: Aportes y perspectivas para las  

E-print Network

Estudiar las redes sociales: Aportes y perspectivas para las ciencias sociales Claire Bidart LEST estructuracio- nes, sus dinámicas. Transversales a los grupos y a las estructuras sociales glo- bales, las redes. Transversales a los grupos y a las estructuras sociales globales, las redes sin embargo repercuten en ellos

Paris-Sud XI, Université de

172

Donación de tejidos para investigación oncológica: muestras y depósitos biológicos  

Cancer.gov

Hoja informativa que describe la importancia de las muestras biológicas y de los depósitos biológicos en la investigación oncológica, y los programas del NCI para aumentar el suministro de muestras biológicas de alta calidad. Explica también cómo los pacientes y otras personas pueden ayudar a apoyar la investigación que usa muestras biológicas.

173

ACUTE TOXICITY OF PARA-NONYLPHENOL TO SALTWATER ANIMALS  

EPA Science Inventory

?para-Nonylphenol (PNP), a mixture of alkylphenols used in producing nonionic surfactants, is distributed widely in surface waters and aquatic sediments, where it can affect saltwater species. This article describes a database for acute toxicity of PNP derived for calculating a n...

174

Lowest Electronic Excited States of Poly(para-cyclobutadienylenecyclopentadienylcobalt)butadiynylene  

E-print Network

(para-cyclobutadienylenecyclopentadienylcobalt)butadiynylene was studied with electronic absorption, Raman, and resonance Raman spectroscopies to determine the nature reso- nance Raman spectroscopy. To accomplish this, we rely on a assignments were made by comparing the 457.9 nm excited resonance Raman frequencies and depolarization ratios

Myrick, Michael Lenn

175

Analyzing and Visualizing Cosmological Simulations with ParaView  

SciTech Connect

The advent of large cosmological sky surveys - ushering in the era of precision cosmology - has been accompanied by ever larger cosmological simulations. The analysis of these simulations, which currently encompass tens of billions of particles and up to a trillion particles in the near future, is often as daunting as carrying out the simulations in the first place. Therefore, the development of very efficient analysis tools combining qualitative and quantitative capabilities is a matter of some urgency. In this paper, we introduce new analysis features implemented within ParaView, a fully parallel, open-source visualization toolkit, to analyze large N-body simulations. A major aspect of ParaView is that it can live and operate on the same machines and utilize the same parallel power as the simulation codes themselves. In addition, data movement is in a serious bottleneck now and will become even more of an issue in the future; an interactive visualization and analysis tool that can handle data in situ is fast becoming essential. The new features in ParaView include particle readers and a very efficient halo finder that identifies friends-of-friends halos and determines common halo properties, including spherical overdensity properties. In combination with many other functionalities already existing within ParaView, such as histogram routines or interfaces to programming languages like Python, this enhanced version enables fast, interactive, and convenient analyses of large cosmological simulations. In addition, development paths are available for future extensions.

Woodring, Jonathan [Los Alamos National Laboratory (LANL); Heitmann, Katrin [ORNL; Ahrens, James P [ORNL; Fasel, Patricia [Los Alamos National Laboratory (LANL); Hsu, Chung-Hsing [ORNL; Habib, Salman [ORNL; Pope, Adrian [Los Alamos National Laboratory (LANL)

2011-01-01

176

Integrated Consensus Map of Cultivated Peanut and Wild Relatives Reveals Structures of the A and B Genomes of Arachis and Divergence of the Legume Genomes  

PubMed Central

The complex, tetraploid genome structure of peanut (Arachis hypogaea) has obstructed advances in genetics and genomics in the species. The aim of this study is to understand the genome structure of Arachis by developing a high-density integrated consensus map. Three recombinant inbred line populations derived from crosses between the A genome diploid species, Arachis duranensis and Arachis stenosperma; the B genome diploid species, Arachis ipaënsis and Arachis magna; and between the AB genome tetraploids, A. hypogaea and an artificial amphidiploid (A. ipaënsis × A. duranensis)4×, were used to construct genetic linkage maps: 10 linkage groups (LGs) of 544 cM with 597 loci for the A genome; 10 LGs of 461 cM with 798 loci for the B genome; and 20 LGs of 1442 cM with 1469 loci for the AB genome. The resultant maps plus 13 published maps were integrated into a consensus map covering 2651 cM with 3693 marker loci which was anchored to 20 consensus LGs corresponding to the A and B genomes. The comparative genomics with genome sequences of Cajanus cajan, Glycine max, Lotus japonicus, and Medicago truncatula revealed that the Arachis genome has segmented synteny relationship to the other legumes. The comparative maps in legumes, integrated tetraploid consensus maps, and genome-specific diploid maps will increase the genetic and genomic understanding of Arachis and should facilitate molecular breeding. PMID:23315685

Shirasawa, Kenta; Bertioli, David J.; Varshney, Rajeev K.; Moretzsohn, Marcio C.; Leal-Bertioli, Soraya C. M.; Thudi, Mahendar; Pandey, Manish K.; Rami, Jean-Francois; Foncéka, Daniel; Gowda, Makanahally V. C.; Qin, Hongde; Guo, Baozhu; Hong, Yanbin; Liang, Xuanqiang; Hirakawa, Hideki; Tabata, Satoshi; Isobe, Sachiko

2013-01-01

177

Emaravirus: a novel genus of multipartite, negative strand RNA plant viruses.  

PubMed

Ringspot symptoms in European mountain ash (Sorbus aucuparia L.), fig mosaic, rose rosette, raspberry leaf blotch, pigeonpea sterility mosaic (Cajanus cajan) and High Plains disease of maize and wheat were found to be associated with viruses that share several characteristics. They all have single-stranded multipartite RNA genomes of negative orientation. In some cases, double membrane-bound virus-like particles of 80 to 200 nm in diameter were found in infected tissue. Furthermore, at least five of these viruses were shown to be vectored by eriophyid mites. Sequences of European mountain ash ringspot-associated virus (EMARaV), Fig mosaic virus (FMV), rose rosette virus (RRV), raspberry leaf blotch virus (RLBV), pigeonpea sterility mosaic virus and High Plains virus strongly support their potential phylogenetic relationship. Therefore, after characterization of EMARaV, the novel genus Emaravirus was established, and FMV was the second virus species assigned to this genus. The recently sequenced RRV and RLBV are supposed to be additional members of this new group of plant RNA viruses. PMID:23170170

Mielke-Ehret, Nicole; Mühlbach, Hans-Peter

2012-09-01

178

[Soil microbial diversity in typical Karst peak-cluster depression under effects of different de-farming patterns].  

PubMed

By using denaturing gradient gel electrophoresis (DGGE) and Biolog_Eco micro-plate technique, this paper studied the soil microbial genetic taxonomic and bacterial metabolic functional diversities under four de-farming patterns, i. e., natural restoration (NT, dominant plant species Neyraudia reynaudiana and Miscanthus floridulus), economic plantation (CM, Cajanus cajan and Castanea mollissima), zero-tillage (PI, Pennisetum purpureum and Zenia insign), and conventional tillage (MB, maize-soybean intercropping), in a typical Karst peak-cluster depression. All test de-farming patterns had significant effects on the soil microbial community structure and bacterial metabolic pattern. The community structure of soil fungi was more affected by the de-farming patterns than that of soil bacteria, while the later was more affected by seasonal variation. After 6-7 years of de-farming, soil bacterial taxonomic Shannon diversity indices had no significant differences under the four de-farming patterns, while soil fungal taxonomic Shannon diversity indices were significantly higher under CM and PI than under NT and MB. The soil bacterial metabolic functional diversity under PI was obviously lower than those under other de-farming patterns. Therefore, soil fungal genetic and bacterial metabolic diversities were more sensitive to de-farming patterns than soil bacterial genetic diversity did. Among the four de-farming patterns, economic plantation had the superiority in maintaining soil microbial genetic and bacterial metabolic functional diversities, being a better de-farming pattern. PMID:20462000

He, Xun-Yang; Su, Yi-Rong; Liang, Yue-Ming; Yang, Shan; Wang, Ke-Lin

2010-02-01

179

Emaravirus: A Novel Genus of Multipartite, Negative Strand RNA Plant Viruses  

PubMed Central

Ringspot symptoms in European mountain ash (Sorbus aucuparia L.), fig mosaic, rose rosette, raspberry leaf blotch, pigeonpea sterility mosaic (Cajanus cajan) and High Plains disease of maize and wheat were found to be associated with viruses that share several characteristics. They all have single-stranded multipartite RNA genomes of negative orientation. In some cases, double membrane-bound virus-like particles of 80 to 200 nm in diameter were found in infected tissue. Furthermore, at least five of these viruses were shown to be vectored by eriophyid mites. Sequences of European mountain ash ringspot-associated virus (EMARaV), Fig mosaic virus (FMV), rose rosette virus (RRV), raspberry leaf blotch virus (RLBV), pigeonpea sterility mosaic virus and High Plains virus strongly support their potential phylogenetic relationship. Therefore, after characterization of EMARaV, the novel genus Emaravirus was established, and FMV was the second virus species assigned to this genus. The recently sequenced RRV and RLBV are supposed to be additional members of this new group of plant RNA viruses. PMID:23170170

Mielke-Ehret, Nicole; Mühlbach, Hans-Peter

2012-01-01

180

Insect odour perception: recognition of odour components by flower foraging moths  

PubMed Central

Odours emitted by flowers are complex blends of volatile compounds. These odours are learnt by flower-visiting insect species, improving their recognition of rewarding flowers and thus foraging efficiency. We investigated the flexibility of floral odour learning by testing whether adult moths recognize single compounds common to flowers on which they forage. Dual choice preference tests on Helicoverpa armigera moths allowed free flying moths to forage on one of three flower species; Argyranthemum frutescens (federation daisy), Cajanus cajan (pigeonpea) or Nicotiana tabacum (tobacco). Results showed that, (i) a benzenoid (phenylacetaldehyde) and a monoterpene (linalool) were subsequently recognized after visits to flowers that emitted these volatile constituents, (ii) in a preference test, other monoterpenes in the flowers' odour did not affect the moths' ability to recognize the monoterpene linalool and (iii) relative preferences for two volatiles changed after foraging experience on a single flower species that emitted both volatiles. The importance of using free flying insects and real flowers to understand the mechanisms involved in floral odour learning in nature are discussed in the context of our findings. PMID:16846910

Cunningham, John Paul; Moore, Chris J; Zalucki, Myron P; Cribb, Bronwen W

2006-01-01

181

Siderophore as a potential plant growth-promoting agent produced by Pseudomonas aeruginosa JAS-25.  

PubMed

Siderophores scavenges Fe(+3) from the vicinity of the roots of plants, and thus limit the amount of iron required for the growth of pathogens such as Fusarium oxysporum, Pythium ultimum, and Fusarium udum, which cause wilt and root rot disease in crops. The ability of Pseudomonas to grow and to produce siderophore depends upon the iron content, pH, and temperature. Maximum yield of siderophore of 130 ?M was observed at pH 7.0 ± 0.2 and temperature of 30 °C at 30 h. The threshold level of iron was 50 ?M, which increases up to 150 ?M, favoring growth but drastically affecting the production of siderophore by Pseudomonas aeruginosa JAS-25. The seeds of agricultural crops like Cicer arietinum (chick pea), Cajanus cajan (pigeon pea), and Arachis hypogaea (ground nut) were treated with P. aeruginosa JAS-25, which enhanced the seed germination, root length, shoot length, and dry weight of chick pea, pigeon pea, and ground nut plants under pot studies. The efficient growth of the plants was not only due to the biocontrol activity of the siderophore produced by P. aeruginosa JAS-25 but also may be by the production of indole acetic acid (IAA), which influences the growth of the plants as phytohormones. PMID:25062779

Sulochana, M B; Jayachandra, S Y; Kumar, S Anil; Parameshwar, A B; Reddy, K Mohan; Dayanand, A

2014-09-01

182

Study the effect of insecticide dimethoate on photosynthetic pigments and photosynthetic activity of pigeon pea: Laser-induced chlorophyll fluorescence spectroscopy.  

PubMed

Pigeon pea is one of the most important legume crops in India and dimethoate is a widely used insecticide in various crop plants. We studied the effect of dimethoate on growth and photosynthetic activity of pigeon pea plants over a short and long term exposure. Plant growth parameters, photosynthetic pigment content and chlorophyll fluorescence response of pigeon pea (Cajanus cajan L.) plants treated with various concentrations of the insecticide dimethoate (10, 20, 40 and 80ppm) have been compared for 30days at regular intervals of 10days each. Laser induced chlorophyll fluorescence spectra and fluorescence-induction kinetics (FIK) curve of dimethoate treated pigeon pea plants were recorded after 10, 20 and 30days of treatment. Fluorescence intensity ratio at the two fluorescence maxima (F685/F730) was calculated by evaluating curve-fitted parameters. The variable chlorophyll fluorescence decrease ratio (Rfd) was determined from the FIK curves. Our study revealed that after 10days of treatment, 10ppm of dimethoate showed stimulatory response whereas 20, 40 and 80ppm of dimethoate showed inhibitory response for growth and photosynthetic activity of pigeon pea plants, but after 20 and 30days of treatment all the tested concentrations of dimethoate became inhibitory. This study clearly shows that dimethoate is highly toxic to the pigeon pea plant, even at very low concentration (10ppm), if used for a prolonged duration. Our study may thus be helpful in determining the optimal dose of dimethoate in agricultural practices. PMID:25228224

Pandey, Jitendra Kumar; Dubey, Gunjan; Gopal, R

2014-09-01

183

Two rhizobacterial strains, individually and in interactions with Rhizobium sp., enhance fusarial wilt control, growth, and yield in pigeon pea.  

PubMed

A Pseudomonas aeruginosa strain, RRLJ 04, and a Bacillus cereus strain, BS 03, were tested both individually and in combination with a Rhizobium strain, RH 2, for their ability to enhance plant growth and nodulation in pigeon pea (Cajanus cajan L.) under gnotobiotic, greenhouse and field conditions. Both of the rhizobacterial strains exhibited a positive effect on growth in terms of shoot height, root length, fresh and dry weight, nodulation and yield over the non-treated control. Co-inoculation of seeds with these strains and Rhizobium RH 2 also reduced the number of wilted plants, when grown in soil infested with Fusarium udum. Gnotobiotic studies confirmed that the suppression of wilt disease was due to the presence of the respective PGPR strains. Seed bacterization with drug-marked mutants of RRLJ 04 and BS 03 confirmed their ability to colonize and multiply along the roots. The results suggest that co-inoculation of these strains with Rhizobium strain RH 2 can be further exploited for enhanced growth, nodulation and yield in addition to control of fusarial wilt in pigeon pea. PMID:25224506

Dutta, Swarnalee; Morang, Pranjal; Kumar S, Nishanth; Dileep Kumar, B S

2014-09-01

184

Soil Organic Matter Quality of an Oxisol Affected by Plant Residues and Crop Sequence under No-Tillage  

NASA Astrophysics Data System (ADS)

Plant residues are considered the primarily resource for soil organic matter (SOM) formation and the amounts and properties of plant litter are important controlling factors for the SOM quality. We determined the amounts, quality and decomposition rate of plant residues and the effects of summer and winter crop sequences on soil organic C (TOC) content, both particulate organic C (POC) and mineral-associated organic C (MOC) pools and humic substances in a Brazilian Rhodic Eutrudox soil under a no-tillage system. The organic C analysis in specifics pools used in this study was effective and should be adopted in tropical climates to evaluate the soil quality and the sustainability of various cropping systems. Continuous growth of soybean (Glycine max L. Merrill) on summer provided higher contents of soil POC and continuous growth of maize (Zea mays L.) provided higher soil humic acid and MOC contents. Summer soybean-maize rotation provided the higher plant diversity, which likely improved the soil microbial activity and the soil organic C consumption. The winter sunn hemp (Crotalaria juncea L.), pigeon pea (Cajanus cajan (L.) Millsp), oilseed radish (Raphanus sativus L.) and pearl millet (Pennisetum americanum (L.) Leeke) enhanced the soil MOC, a finding that is attributable to the higher N content of the crop residue. Sunn hemp and pigeon pea provided the higher soil POC content. Sunn hemp showed better performance and positive effects on the SOM quality, making it a suitable winter crop choice for tropical conditions with a warm and dry winter.

Cora, Jose; Marcelo, Adolfo

2013-04-01

185

Antioxidant enzyme changes in neem, pigeonpea and mulberry leaves in two stages of maturity  

PubMed Central

Differential expression of antioxidant enzymes in various growth and differentiation stages has been documented in several plant species. We studied here, the difference in the levels of protein content and antioxidant enzymes activity at two stages of maturity, named young and mature in neem (Azadirachta indica A. Juss), pigeonpea (Cajanus cajan (L.) mill sp) and mulberry (Morus Alba L.) leaves. The results showed that detached neem and pigeonpea mature leaves possessed higher activities of catalase (CAT) and peroxidase (POD) and lower activities of polyphenol oxidase (PPO) and ascorbate peroxidase (APX) as compared with young leaves. However, glutathione reductase (GR) showed higher activity in mature leaves of neem, whereas no change in its activity was observed in pigeonpea. On the other hand, antioxidant enzymes in mulberry showed either positive (PPO) or negative (POD, GR, APX) correlation with the progression of leaf maturity. Apparently the trend of changes in antioxidant enzymes activity during leaf development is species-specific: their activity higher at mature stage in some plants and lower in others. PMID:22895104

Goud, Prashanth B.; Kachole, Manvendra S.

2012-01-01

186

Cover crops and natural vegetation mulch effect achieved by mechanical management with lateral rotary mower in weed population dynamics in citrus.  

PubMed

The aim of this study was to obtain information on practical weed management in order to reduce the use of herbicides thereby contributing to the sustainable development of citrus crop. The experiment was carried out under field conditions at the experimental area of the Department of Vegetal Production at the College of Agriculture "Luiz de Queiroz," Piracicaba, SP, Brazil, during the season 2002-2003. Influence of mulches produced by four types of vegetations on the dynamic population of weeds in the line of citrus crop (Citrus sinensis (L.) Osbeck) was evaluated. The experimental design was of factorial randomized blocks (4 x 2), where the treatments were: (i) four types of vegetation: Dolichos lablab L., Cajanus cajan (L.) Millsp, Penisetum glaucum (L.) Leeke, and the natural infestation composed basically by Panicum maximum Jacq.; and (ii) two types of fertilization: directed under canopy and broadcast. Mechanical management of the different vegetations was accomplished using a lateral rotary mower, KAMAQ, I model NINJA MAC 260, projected to release the green cut material under crop canopy, forming a mulch layer. The studied parameters were: (i) counting of weeds per m2 in the crop line after 30, 60, 90, 180, and 210 days following the cutting of existing vegetation; (ii) percentage of covered area by weeds; and (iii) some chemical properties of the soil. It was observed that the natural infestation showed a better weed control when compared with the other treatments, and that the broadcast fertilization, regardless of coverage used, presented a lower number of weeds. PMID:15656179

Matheis, Héctor Alonso San Martín; Filho, Ricardo Victoria

2005-01-01

187

Medicinal plants of India with anti-diabetic potential.  

PubMed

Since ancient times, plants have been an exemplary source of medicine. Ayurveda and other Indian literature mention the use of plants in treatment of various human ailments. India has about 45000 plant species and among them, several thousands have been claimed to possess medicinal properties. Research conducted in last few decades on plants mentioned in ancient literature or used traditionally for diabetes have shown anti-diabetic property. The present paper reviews 45 such plants and their products (active, natural principles and crude extracts) that have been mentioned/used in the Indian traditional system of medicine and have shown experimental or clinical anti-diabetic activity. Indian plants which are most effective and the most commonly studied in relation to diabetes and their complications are: Allium cepa, Allium sativum, Aloe vera, Cajanus cajan, Coccinia indica, Caesalpinia bonducella, Ficus bengalenesis, Gymnema sylvestre, Momordica charantia, Ocimum sanctum, Pterocarpus marsupium, Swertia chirayita, Syzigium cumini, Tinospora cordifolia and Trigonella foenum graecum. Among these we have evaluated M. charantia, Eugenia jambolana, Mucuna pruriens, T. cordifolia, T. foenum graecum, O. sanctum, P. marsupium, Murraya koeingii and Brassica juncea. All plants have shown varying degree of hypoglycemic and anti-hyperglycemic activity. PMID:12020931

Grover, J K; Yadav, S; Vats, V

2002-06-01

188

REGLAMENTO PARA LA PROMOCIN Y APOYO AL DEPORTISTA UNIVERSITARIO  

E-print Network

obligación de fomentar el deporte que establece el artículo 43.3 de la Constitución Española, lo que se libre elección curricular. El deporte universitario, a nivel competitivo, está constituido por una fase Campeonato Autonómico del Deporte Universitario (CADU), que sirve de clasificatoria para el Campeonato de

Escolano, Francisco

189

MEMORIA PARA LA PROPUESTA DE INVESTIGACIN EN INGENIERA CIVIL  

E-print Network

MEMORIA PARA LA PROPUESTA DE MASTER DE INVESTIGACI�N EN INGENIERÍA CIVIL A IMPLANTAR EN EL CURSO 2013-2014 #12;ETS Ingenieros de Caminos, Canales y Puertos MÁSTER EN INVESTIGACI�N EN INGENIERÍA CIVIL Máster de Investigación en Ingeniería Civil por la Universidade da Coruña Indicar si el programa se

Fraguela, Basilio B.

190

NORMAS GERAIS PARA INGRESSO COMO PORTADOR DE DIPLOMA DE  

E-print Network

1 NORMAS GERAIS PARA INGRESSO COMO PORTADOR DE DIPLOMA DE GRADUA��O (BRASIL) PERÍODO 2013.2 PRAZO PORTADOR DE DIPLOMA DE GRADUA��O DO BRASIL I­DAS CONDI��ES Portadores de Diploma de Graduação de Cursos; - Certificado de Dispensa de Incorporação; - CPF; Se candidato estrangeiro: - Certificado de Concl

191

NORMAS GERAIS PARA INGRESSO COMO PORTADOR DE DIPLOMA DE  

E-print Network

1 NORMAS GERAIS PARA INGRESSO COMO PORTADOR DE DIPLOMA DE GRADUA��O (BRASIL) PERÍODO 2013.1 PRAZO COMO PORTADOR DE DIPLOMA DE GRADUA��O DO BRASIL I­DAS CONDI��ES Portadores de Diploma de Graduação de; - Certificado de Dispensa de Incorporação; - CPF; Se candidato estrangeiro: - Certificado de

192

Clearance of para-aminohippuric acid in wethers consuming locoweed  

Microsoft Academic Search

AIM: To validate the use of para-aminohippuric acid (PAH) as a marker for measuring blood flow in wethers consuming a mixed diet of locoweed and blue grama hay.METHODS: Fourteen sheep, stratified by bodyweight (BW), were assigned to one of three treatments: 0.8 mg swainsonine (SW)\\/kg BW (HI), 0.2 mg SW\\/kg BW (LO), and no SW (Control). Sheep were fed various

JR Strickland; MA Custis; AK Ashley; LL Smith; JL Klotz; CR Krehbiel

2005-01-01

193

Linguagens para Programac~ao Paralela November 26, 2009  

E-print Network

1.0 to each element of A A = SQRT(A) ! Computes square root of each element of A L = A .EQ. B ! Sets paralelismo de dados e de processos: compartilhamento de dados com conhecimento de localiza¸c~ao Titanium, UPC¸c~ao fortemente s´incronos Linguagens para Programa¸c~ao Paralela #12;Titanium - baseada em Java Point start

Rodriguez, Noemi

194

Elementos para una 'Teoría' teatral libertaria (Argentina 1900)  

E-print Network

actividades de orientación popular. 2 - DE LA REFLEXION CRITICA HACIA UNA NORMATIVA Dicha actividad literario-teatral (edición, espectáculo) apareció continuamente completada por una dimensión crítica, presente en los numerosos comentarios que se llevaban... espectadores a las veladas teatrales ("Si se reúnen quinientos compañeros para ver repre sentar dramas"), cifra que debía verse superada más de una vez, a juzgar por algunos balances de fondos recolectados por los distintos centros libertarios.7 La...

Golluscio de Montoya, Eva

1987-10-01

195

Ultrafast photogeneration mechanisms of triplet states in para-hexaphenyl  

Microsoft Academic Search

We present femtosecond pump-probe measurements, both conventional and electric field-assisted, on organic light-emitting devices based on para-hexaphenyl. The dominant triplet exciton generation mechanism is assigned to nongeminate bimolecular recombination of photogenerated, spin-12 polarons. This process is active within a few hundred femtoseconds after photoexcitation and involves about 20% of the initially excited states. At higher photoexcitation densities, we observe an

C. Zenz; G. Cerullo; G. Lanzani; W. Graupner; F. Meghdadi; G. Leising; S. de Silvestri

1999-01-01

196

DERECHOS DEL EMPLEADO LEy PARA LA PROtECCin  

E-print Network

DERECHOS DEL EMPLEADO LEy PARA LA PROtECCión DEL EMPLEADO COntRA LA PRuEbA DEL POLígRAfO PROHIBICIONES ExENCIONES DERECHOS DE LOS ExAMINADOS CUMPLIMIENTO Generalmente se le prohíbe al empleador que le aspirante a un trabajo por haberse negado a someterse a la prueba o por haberse acogido a otros derechos

Rock, Chris

197

arquivo Proposta de regras e tabela para progresso funcional  

E-print Network

reconhecidos publicamente (arxiv.org, por exemplo). Livros - Pontuam-se livros e capítulos de livros por artigos e livros pontuam por obra. Nesse caso, aceita-se o comprovante de emissão de parecer emitido pelo editor do jornal, revista ou livro. Assessoria ad-hoc para órgãos de fomento pontuam por emissão de

Floeter, Sergio Ricardo

198

PARA-HYDROXYBENZOATE AS AN INTERMEDIATE IN THE ANAEROBIC TRANSFORMATION OF PHENOL TO BENZOATE  

EPA Science Inventory

Anaerobic phenol transformation was studied using a consortium which transformed phenol to benzoate without complete mineralization of benzoate. Products of monofluorophenol transformation indicate para-carboxylation. henol and benzoate were detected during para-hydroxybenzoate (...

199

Recent Achievements in Structure Ordering and Control of Properties of Para-Aramide Fibres  

Microsoft Academic Search

The family of commercially produced high-strength, high-modulus fibres and yarns for the manufacture of technical textiles and construction composites, based on aromatic para-polyamides – poly-para-phenylene-terephphtalamide (Kevlar, Twaron), copolymers (Terlon, Technora), poly-para-heteroarylenes (SVM, Armos), was discussed and compared in the paper. The necessity of drawing such a comparison resulted from the fact that although there were papers on individual para-aramide fibres,

Kirill E. Perepelkin; Nikolai N. Machalaba

2000-01-01

200

El Centro para la Salud Mundial del NCI anuncia las primeras becas de investigación para apoyar las tecnologías portátiles  

Cancer.gov

El Centro para la Salud Mundial del NCI (CGH) anunció el otorgamiento de subvenciones que apoyarán el desarrollo y la validación de tecnologías portátiles y de bajo costo. Estas tecnologías tienen el potencial de mejorar la detección temprana, el diagnóstico y los tratamientos no invasivos o mínimamente invasivos de varios tipos de cáncer con una prevalencia particularmente alta en ciertos países con economías de ingreso bajo y mediano.

201

Semana nacional de preparacin para clima severo 2 al 8 de marzo de Manual para las redes sociales  

E-print Network

Federal para el Manejo de Emergencias (FEMA, por sus siglas en inglés) y a la Administración Nacional://www.ready.gov/es http://www.fema.gov/es www.weather.gov #12;www.noaa.gov www.ready.gov/prepare Twitter: Utilice la! Hable con su familia sobre las amenazas meteorológicas de su comunidad: www.fema.gov/preparethon #Sea

202

Taller de Ciencia para Jvenes para alumnos de nivel bachillerato San Cristbal de las Casas, Chiapas, 25-30 julio, 2011  

E-print Network

Taller de Ciencia para Jóvenes para alumnos de nivel bachillerato San Cristóbal de las Casas, Chiapas, 25-30 julio, 2011 CONVOCATORIA El "Taller de Ciencia para Jóvenes" en San Cristóbal de las Casas atraídos a las ciencias naturales y tienen intención de estudiar una carrera científica. El programa del

Bor, Gil

203

Fondos del SBIR para el desarrollo de tecnologías de imágenes más avanzadas  

Cancer.gov

El Programa de Investigación de la Innovación de la Pequeña Empresa (SBIR), junto con el Programa de Transferencia Tecnológica para la Pequeña Empresa (STTR), son los motores del NCI para la creación y comercialización de nuevas tecnologías para prevenir, diagnosticar y tratar el cáncer.

204

Accesibilidad para personas con debilidad motriz Mac Os X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad motriz Mac Os X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 9 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD MOTRIZ EN ENTORNO MAC OS X SNOW para personas con debilidad motriz Mac Os X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 2 de 9

Fernández de Córdoba, Pedro

205

Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard  

E-print Network

Accesibilidad para personas con debilidad visual Mac OS X Snow Leopard ASIC ­ 18 de noviembre de 2010 Pág. 1 de 25 GUÍA DE ACCESIBILIDAD PARA PERSONAS CON DEBILIDAD VISUAL EN ENTORNO MAC OS X SNOW LEOPARD Al igual que otros sistemas operativos, MAC OS X Snow Leopard ofrece algunas ayudas para que las

Fernández de Córdoba, Pedro

206

Visite www.ChooseMyPlate.gov para obtener ms informacin.  

E-print Network

consejos para crear un buen plato Elegir alimentos para llevar un estilo de vida sano es muy sencillo si sigue estos 10 consejos. Use las ideas de esta lista para balancear las calorías, elegir los alimentos que le conviene comer con mayor frecuencia y reducir la cantidad de alimentos que le conviene comer

207

TOMADA DE DECISÃO PARA AÇÃO SOCIAL RESPONSÁVEL NO ENSINO DE CIÊNCIAS  

Microsoft Academic Search

Resumo: O principal objetivo de currículos CTS é o letramento científico e tecnológico para que os alunos possam atuar como cidadãos, tomando decisões e agindo com responsabilidade social. No pre- sente artigo discutiremos o significado dessa meta educacional e apresentaremos uma revisão da litera- tura sobre suas implicações para o ensino de ciências. As considerações apresentadas contribuem para uma melhor

Wildson Luiz Pereira dos Santos; Eduardo Fleury Mortimer

2001-01-01

208

PLANIFICACIÓN COLABORATIVA Y UBICUA PARA EL APRENDIZAJE DEL DISEÑO EN EL SISTEMA DOMOSIM-TPC  

Microsoft Academic Search

Resumen En este artículo, como punto de partida, describimos parte de nuestra experiencia en un caso de estudio particular y sobre un e scenario real en el que se trabaja para resolver una cierta problemática asociada al aprendizaje del diseño domótico. Para este caso de estudio desarrollamos un sistema para el aprendizaje colaborativo basado en los paradigmas de interacción asistida

Miguel A. Redondo; Ana I. Molina; Crescencio Bravo; José Bravo; Manuel Ortega

209

Cómo cuidarse mientras usted cuida a su ser querido: Apoyo para personas que cuidan a un ser querido con cáncer  

Cancer.gov

Un folleto para las personas responsables del cuidado de un ser querido que recibe tratamiento para el cáncer. Ofrece información práctica y apoyo para ayudarlas a sobrellevar este período difícil y estresante.

210

Amazon Land Wars in the South of Para  

NASA Technical Reports Server (NTRS)

The South of Para, located in the heart of the Brazilian Amazon, has become notorious for violent land struggle. Although land conflict has a long history in Brazil, and today impacts many parts of the country, violence is most severe and persistent here. The purpose of this article is to examine why. Specifically, we consider how a particular Amazonian place, the so-called South of Para has come to be known as Brazil's most dangerous badland. We begin by considering the predominant literature, which attributes land conflict to the frontier expansion process with intensified struggle emerging in the face of rising property values and demand for private property associated with capitalist development. From this discussion, we distill a concept of the frontier, based on notions of property rights evolution and locational rents. We then empirically test the persistence of place-based violence in the region, and assess the frontier movement through an analysis of transportation costs. The findings from the analyses indicate that the prevalent theorization of frontier violence in Amazonia does little to explain its persistent and pervasive nature in the South of Para. To fill this gap in understanding, we develop an explanation based the geographic conception of place, and we use contentious politics theory heuristically to elucidate the ways in which general processes interact with place specific history to engender a landscape of violence. In so doing, we focus on environmental, cognitive, and relational mechanisms (and implicated structures), and attempt to deploy them in an explanatory framework that allows direct observation of the accumulating layers of the region's tragic history. We end by placing our discussion within a political ecological context, and consider the implications of the Amazon Land War for the environment.

Simmons, Cynthia S.; Walker, Robert T.; Arima, Eugenio Y.; Aldrich, Stephen P.; Caldas, Marcellus M.

2007-01-01

211

ORTHO-PARA SELECTION RULES IN THE GAS-PHASE CHEMISTRY OF INTERSTELLAR AMMONIA  

SciTech Connect

The ortho-para chemistry of ammonia in the cold interstellar medium is investigated using a gas-phase chemical network. Branching ratios for the primary reaction chain involved in the formation and destruction of ortho- and para-NH{sub 3} were derived using angular momentum rules based on the conservation of the nuclear spin. We show that the 'anomalous' ortho-to-para ratio of ammonia ({approx}0.7) observed in various interstellar regions is in fact consistent with nuclear spin selection rules in a para-enriched H{sub 2} gas. This ratio is found to be independent of temperature in the range 5-30 K. We also predict an ortho-to-para ratio of {approx}2.3 for NH{sub 2}. We conclude that a low ortho-to-para ratio of H{sub 2} naturally drives the ortho-to-para ratios of nitrogen hydrides below the statistical values.

Faure, A.; Hily-Blant, P.; Le Gal, R.; Rist, C. [UJF-Grenoble 1/CNRS-INSU, Institut de Planetologie et d'Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble F-38041 (France); Pineau des Forets, G., E-mail: afaure@obs.ujf-grenoble.fr [Institut d'Astrophysique Spatiale, Universite Paris-Orsay and CNRS, Orsay (France)

2013-06-10

212

Do Well, Be Well with Diabetes 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes 2013  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Registro para Personas con Diabetes Formulario de Registro para Personas con Diabetes ­ 2013 Si usted NO TIENE diabetes, por favor NO LLENE este sobre diabetes en el Condado de _______________. D. El código postal en mi casa es __ __ __ __ __. E

213

Do Well, Be Well with Diabetes 2013 1 Formulario de Conclusin para Personas con Diabetes Formulario de Conclusin para Personas con Diabetes 201  

E-print Network

Do Well, Be Well with Diabetes ­ 2013 1 Formulario de Conclusión para Personas con Diabetes Formulario de Conclusión para Personas con Diabetes ­ 201 Si usted NO TIENE diabetes, por favor NO LLENE este últimos cuatro números de mi número telefónico son __ __ __ __. C. Marque todas las clases sobre diabetes

214

NMR Quantum Information Processing with Para-Hydrogen  

E-print Network

This thesis addresses the problems of initialization and separability in liquid state NMR based quantum information processors. We prepare pure quantum states lying above the entanglement threshold. Our pure state quantum computer derives its purity from the highly polarized nuclear spin states in the para-hydrogen molecule. The thesis begins with a critique of conventional NMR based quantum information processing outlining the major strengths and weaknesses of the technology. We describe the enhanced magnetic ordering of the nuclear spin states in para-hydrogen and an initialization experiment exploiting this effect to achieve pure, entangled states. These states can indeed be used as initial states in implementing quantum algorithms: we describe mplementations of the Deutsch and the Grover quantum algorithms. The "twirl" operation converts a completely arbitrary input state to a Werner singlet. The NMR implementation of this operation is taken up. We also analyze the possibility of sharing the purity of some highly polarized qubits in a quantum computer onto quantum subspaces of arbitrary dimensions, and whether these sharing operations increase or decrease the likelihood of entanglement.

M. S. Anwar

2005-09-07

215

ParaText : scalable text analysis and visualization.  

SciTech Connect

Automated analysis of unstructured text documents (e.g., web pages, newswire articles, research publications, business reports) is a key capability for solving important problems in areas including decision making, risk assessment, social network analysis, intelligence analysis, scholarly research and others. However, as data sizes continue to grow in these areas, scalable processing, modeling, and semantic analysis of text collections becomes essential. In this paper, we present the ParaText text analysis engine, a distributed memory software framework for processing, modeling, and analyzing collections of unstructured text documents. Results on several document collections using hundreds of processors are presented to illustrate the exibility, extensibility, and scalability of the the entire process of text modeling from raw data ingestion to application analysis.

Dunlavy, Daniel M.; Stanton, Eric T.; Shead, Timothy M.

2010-07-01

216

[Neurocience in the Junta para Ampliación de Estudios].  

PubMed

The development of the Neurociencias in the Spain at the first third of the 20th century had a strong histological and pathological component. The work of Santiago Ramon and Cajal and Luis Simarro was continued by some excellent disciples: Nicolas Achúcarro, Gonzalo Rodriguez Lafora, Fernando de Castro, etc. Some of them had to make compatible diverse occupations, even the professional exercise of psychiatry, before obtaining a modest - but stable - position of investigation. In spite of some misalignments in the institutional development of the centers and the personal biographical ups and downs, the Junta para Ampliación de Estudios was the great institution that fomented the international formation of the investigators and equipped to them with the means to develop its work. PMID:19845048

Díaz, Alfredo Baratas

2007-01-01

217

Um Framework para a Simulao de Redes Mveis Ad hoc Alexandre Mele & Markus Endler  

E-print Network

Um Framework para a Simulação de Redes Móveis Ad hoc Alexandre Mele & Markus Endler Departamento de, um framework flexível para a prototipação e simulação de protocolos para redes móveis ad hoc. Depois.11. Palavras-chave Redes Móveis Ad hoc, Framework, Simulação, Roteamento, Prototipação de Protocolos #12;Um

Endler, Markus

218

Procedimento para utilizar a assinatura do IB no Webmail 1) Acesse a sua conta no webmail;  

E-print Network

1/5 Procedimento para utilizar a assinatura do IB no Webmail 1) Acesse a sua conta no webmail; 2 clique no ícone imagem; 8) Na tela seguinte, digite a seguinte URL da imagem: www.ib.usp.br/webmail/assinatura.jpg A imagem da assinatura do IB será exibida. Clique em OK para voltar para a tela de configuração e salve

Morandini, Andre C.

219

Modelo 3C de Colaborao para o desenvolvimento de Sistemas Colaborativos  

E-print Network

desenvolvimento: para auxiliar a análise do groupware a ser desenvolvido; no estabelecimento do foco para o desenvolvimento de sucessivas versões do groupware num processo iterativo e investigativo; e para o Groupware, Modelo 3C de Colaboração 1. INTRODU��O A colaboração envolve comunicação, coordenação e

Barbosa, Alberto

220

Jornal de Notcias -Notcias Magazine Quanto vale um diploma para o futuro  

E-print Network

Jornal de Notícias - Notícias Magazine Quanto vale um diploma para o futuro Autor: Catarina Pires parcial #12;Jornal de Notícias - Notícias Magazine Quanto vale um diploma para o futuro Autor: Catarina reprodução, mesmo que parcial #12;Jornal de Notícias - Notícias Magazine Quanto vale um diploma para o futuro

Instituto de Sistemas e Robotica

221

Nueva opción de tratamiento para mujeres jóvenes con cáncer de seno sensible a las hormonas  

Cancer.gov

Un fármaco usado para el tratamiento del cáncer de seno (mama), conocido como exemestano, es más eficaz que tamoxifeno, un fármaco preventivo de uso común para el cáncer de seno, en la prevención de la recidiva del cáncer de seno en mujeres jóvenes que también reciben tratamiento posoperativo para suprimir el funcionamiento ovárico. Los resultados de este estudio se presentaron en mujeres que tenían un tipo de cáncer de seno en estadio inicial sensible al tratamiento hormonal.

222

Desenvolvimento, aplicação e avaliação de um modelo de intervenção positiva para pacientes com miastenia gravis.  

E-print Network

??Essa dissertação objetiva desenvolver, aplicar e avaliar um modelo de intervenção psicológica em grupo baseado nas abordagens cognitivo-comportamental e positiva para pacientes com miastenia gravis.… (more)

Bruna Larissa Seibel

2012-01-01

223

Avaliação de técnicas de diagnóstico para a análise de dados com medidas repetidas.  

E-print Network

??Dentre as possíveis propostas encontradas na literatura estatística para analisar dados oriundos de estudos com observações correlacionadas, estão os modelos condicionais e os modelos marginais.… (more)

Ricardo Salles Kurusu

2013-01-01

224

Features of the ancestral bilaterian inferred from Platynereis dumerilii ParaHox genes  

PubMed Central

Background The ParaHox gene cluster is the evolutionary sister to the Hox cluster. Whilst the role of the Hox cluster in patterning the anterior-posterior axis of bilaterian animals is well established, and the organisation of vertebrate Hox clusters is intimately linked to gene regulation, much less is known about the more recently discovered ParaHox cluster. ParaHox gene clustering, and its relationship to expression, has only been described in deuterostomes. Conventional protostome models (Drosophila melanogaster and Caenorhabditis elegans) are secondarily derived with respect to ParaHox genes, suffering gene loss and cluster break-up. Results We provide the first evidence for ParaHox gene clustering from a less-derived protostome animal, the annelid Platynereis dumerilii. Clustering of these genes is thus not a sole preserve of the deuterostome lineage within Bilateria. This protostome ParaHox cluster is not entirely intact however, with Pdu-Cdx being on the opposite end of the same chromosome arm from Pdu-Gsx and Pdu-Xlox. From the genomic sequence around the P. dumerilii ParaHox genes the neighbouring genes are identified, compared with other taxa, and the ancestral arrangement deduced. Conclusion We relate the organisation of the ParaHox genes to their expression, and from comparisons with other taxa hypothesise that a relatively complex pattern of ParaHox gene expression existed in the protostome-deuterostome ancestor, which was secondarily simplified along several invertebrate lineages. Detailed comparisons of the gene content around the ParaHox genes enables the reconstruction of the genome surrounding the ParaHox cluster of the protostome-deuterostome ancestor, which existed over 550 million years ago. PMID:19627570

Hui, Jerome HL; Raible, Florian; Korchagina, Natalia; Dray, Nicolas; Samain, Sylvie; Magdelenat, Ghislaine; Jubin, Claire; Segurens, Béatrice; Balavoine, Guillaume; Arendt, Detlev; Ferrier, David EK

2009-01-01

225

Ortho-para mixing hyperfine interaction in the H2O+ ion and nuclear spin equilibration.  

PubMed

The ortho to para conversion of water ion, H2O(+), due to the interaction between the magnetic moments of the unpaired electron and protons has been theoretically studied to calculate the spontaneous emission lifetime between the ortho- and para-levels. The electron spin-nuclear spin interaction term, Tab(Sa?Ib + Sb?Ia) mixes ortho (I = 1) and para (I = 0) levels to cause the "forbidden" ortho to para |?I| = 1 transition. The mixing term with Tab = 72.0 MHz is 4 orders of magnitude higher for H2O(+) than for its neutral counterpart H2O where the magnetic field interacting with proton spins is by molecular rotation rather than the free electron. The resultant 10(8) increase of ortho to para conversion rate possibly makes the effect of conversion in H2O(+) measurable in laboratories and possibly explains the anomalous ortho to para ratio recently reported by Herschel heterodyne instrument for the far-infrared (HIFI) observation. Results of our calculations show that the ortho ? para mixings involving near-degenerate ortho and para levels are high (?10(-3)), but they tend to occur at high energy levels, ?300 K. Because of the rapid spontaneous emission, such high levels are not populated in diffuse clouds unless the radiative temperature of the environment is very high. The low-lying 101 (para) and 111 (ortho) levels of H2O(+) are mixed by ?10(-4) making the spontaneous emission lifetime for the para 101 ? ortho 000 transition 520 years and 5200 years depending on the F value of the hyperfine structure. Thus the ortho ? para conversion due to the unpaired electron is not likely to seriously affect thermalization of interstellar H2O(+) unless either the radiative temperature is very high or number density of the cloud is very low. PMID:23530629

Tanaka, Keiichi; Harada, Kensuke; Oka, Takeshi

2013-10-01

226

Ortho-Para Mixing Hyperfine Interaction in the H2O+ Ion and Nuclear Spin Equilibration  

NASA Astrophysics Data System (ADS)

The ortho to para conversion of water ion, H2O+, due to the interaction between the magnetic moments of the unpaired electron and protons has been theoretically studied to calculate the spontaneous emission lifetime between the ortho- and para-levels. The electron spin-nuclear spin interaction term, Tab(Sa-Ib + Sb-Ia) mixes ortho (I = 1) and para (I = 0) levels to cause the -forbidden- ortho to para |-I| = 1 transition. The mixing term with Tab = 72.0 MHz is 4 orders of magnitude higher for H2O+ than for its neutral counterpart H2O where the magnetic field interacting with proton spins is by molecular rotation rather than the free electron. The resultant 108 increase of ortho to para conversion rate possibly makes the effect of conversion in H2O+ measurable in laboratories and possibly explains the anomalous ortho to para ratio recently reported by Herschel heterodyne instrument for the far-infrared (HIFI) observation. Results of our calculations show that the ortho - para mixings involving near-degenerate ortho and para levels are high (-10-3), but they tend to occur at high energy levels, -300 K. Because of the rapid spontaneous emission, such high levels are not populated in diffuse clouds unless the radiative temperature of the environment is very high. The low-lying 101 (para) and 111 (ortho) levels of H2O+ are mixed by -10-4 making the spontaneous emission lifetime for the para 101 - ortho 000 transition 520 years and 5200 years depending on the F value of the hyperfine structure. Thus the ortho - para conversion due to the unpaired electron is not likely to seriously affect thermalization of interstellar H2O+ unless either the radiative temperature is very high or number density of the cloud is very low.

Tanaka, Keiichi; Harada, Kensuke; Oka, Takeshi

2013-10-01

227

Analise de Mecanismos de CAC para Redes ATM Michel Ferreira Abdalla  

E-print Network

An´alise de Mecanismos de CAC para Redes ATM Michel Ferreira Abdalla Department of Computer Science~ao em redes ATM. Uma classifica¸c~ao destes mecanismos baseada no princ´ipio impl´icito neles utilizado encontrar em redes ATM, estes mecanismos apre- sentam resultados bastante superestimados para a capaci- dade

Abdalla, Michel Ferreira

228

Opciones de cirugía para mujeres con CDIS o con cáncer de seno  

Cancer.gov

Contiene información sobre los tipos de cirugía de seno, como la operación para conservar el seno y la mastectomía, y ayuda a las mujeres diagnosticadas con CDIS o con cáncer de seno a decidir cuál cirugía es la más conveniente para ellas.

229

Acumulación de capital humano y gasto público en educación: un modelo de generaciones traslapadas para Colombia  

Microsoft Academic Search

En el presente documento se estudia el impacto del gasto público en educación sobre el crecimiento económico y el bienestar, para lo cual se construye un modelo de generaciones traslapadas y crecimiento endógeno. Los agentes se educan con el fin de acumular capital humano, mientras el gobierno subsidia una fracción del gasto en educación. Los parámetros son calibrados para replicar

Oliver Pardo

2006-01-01

230

DESCENTRALIZACIÓN Y GASTO PÚBLICO SOCIAL EN EDUCACIÓN Y SALUD PARA MUESTRA MUNICIPAL DE SANTANDER 1997 - 2005  

Microsoft Academic Search

Este documento registra la cobertura de los servicios de educación y salud para una muestra de diecinueve municipios del departamento de Santander en el periodo 1997-2005, analizada bajo el efecto de la política de descentralización implementada en Colombia desde comienzos de los años ochenta. Los resultados más importantes muestran, que los niveles de cobertura para estos dos servicios crecieron de

Amilcar Mojica Pimiento

2010-01-01

231

FUNDAMENTOS TEÓRICOS DE LA COORDINACIÓN COMO PREMISA ESENCIAL PARA DESARROLLAR EL TRABAJO SOCIOCULTURAL COMUNITARIO  

Microsoft Academic Search

La cultura como conjunto de relaciones humanas que ha transcendido en el tiempo y que le permite al hombre conservar, reproducir, crear nuevos conocimientos y valores para la transformación de su medio social y cultural, cada día cobra mayor importancia como sostén fundamental para la satisfacción de las necesidades espirituales y como elemento de influencia directa en la producción de

Ricardo Basilio Enoa Leyva

2010-01-01

232

Rate of para-aortic lymph node micrometastasis in patients with locally advanced cervical cancer  

PubMed Central

Objective Patients with micrometastasis to para-aortic lymph nodes may benefit from extended field chemoradiation. To determine the rate of para-aortic node micrometastasis in patients with locally advanced cervical cancer undergoing laparoscopic extraperitoneal para-aortic lymphadenectomy Methods We prospectively identified consecutive patients diagnosed with stage IB2-IVA biopsy-proven cervical cancer. Eligible patients included those who were candidates for treatment with radiotherapy and concurrent chemotherapy and had no evidence of para-aortic lymphadenopathy (all lymph nodes < 2 cm in diameter) by preoperative computed tomography or magnetic resonance imaging. All patients underwent preoperative positron emission tomography/computed tomography and laparoscopic extraperitoneal para-aortic lymphadenectomy. All lymph nodes were assessed for metastasis by routine hematoxylin-eosin (H&E) staining. Ultrastaging (serial sectioning) and immunohistochemical analysis were performed in H&E-negative specimens. Results Thirteen (22%) of 60 consecutive patients had para-aortic lymph node metastases detected on routine H&E staining. Of the remaining 47 patients, one (2.1%) had evidence of micrometastasis, which was detected by ultrastaging. This patient completed whole pelvic radiotherapy and chemotherapy but had a recurrence 27 months after completion of therapy. Conclusions The rate of para-aortic node micrometastasis in patients with locally advanced cervical cancer is low. The role of routine ultrastaging and immunohistochemical analysis in such patients remains uncertain. Future studies are needed to determine the clinical impact of para-aortic node micrometastasis in patients with locally advanced cervical cancer. PMID:20837355

Zand, Behrouz; Euscher, Elizabeth D.; Soliman, Pamela T.; Schmeler, Kathleen M.; Coleman, Robert L.; Frumovitz, Michael; Jhingran, Anuja; Ramondetta, Lois M.; Ramirez, Pedro T.

2014-01-01

233

REDES-Revista hispana para el anlisis de redes sociales Vol.17,#13, Diciembre 2009  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.17,#13, Diciembre 2009 http://revista-redes. Palabras clave: Apoyo social ­ Inmigrantes ­ Redes personales. Abstract This paper summarises part of our, alteridad y nueva esfera social, 257-276. Universidad de Valencia: Valencia. #12;REDES- Revista hispana para

Boyer, Edmond

234

Formulación de alimentos para celíacos con base en mezclas de harinas de quínoa, cereales y almidones  

Microsoft Academic Search

RESUMEN. Se formularon alimentos sin gluten para celíacos en base a mezclas de harina de quínoa (Chenopodium quinoa), arroz y maíz con almidones. Para la formulación de estos alimentos se usó la herramienta informática (ALIM V1.0) desarrollada por los auto- res. Se obtuvieron panqueques, scones, prepizza y pan, los cuales fueron evaluados en composición química (proteínas, grasas, ceni- zas, fibras,

Valeria Del Castillo; Gerardo Lescano; Margarita Armada

235

ParaScale: Exploiting Parametric Timing Analysis for Real-Time Schedulers and Dynamic Voltage Scaling  

E-print Network

ParaScale: Exploiting Parametric Timing Analysis for Real-Time Schedulers and Dynamic Voltage for dynamic power conservation by exploiting parametric loop bounds for ParaScale, our intra-task dynamic voltage scaling (DVS) approach. Our results demonstrate that the parametric approach to timing analysis

Mueller, Frank

236

O CONCEITO DE EMANCIPAÇÃO COMO FUNDAMENTO PARA UMA TEORIA DA EDUCAÇÃO EM JÜRGEN HABERMAS  

Microsoft Academic Search

Neste breve artigo pretendemos apresentar elementos que possam ser sugestivos e indicativos para a fundamentação de uma teoria da educação a partir da compreensão do processo de esclarecimento enquanto processo de emancipação do homem na sociedade contemporânea. Sabemos que Jürgen Habermas propõe o recurso ao entendimento mútuo como meio para se chegar a um entendimento e se obter um consenso,

Bartolomeu Leite da Silva

2010-01-01

237

O pragmatismo em economia : bases filosóficas para uma interpretação do discurso econômico  

Microsoft Academic Search

O trabalho tem por objetivo trazer elementos da corrente filosófica do pragmatismo para a discussão metodológica em economia, particularmente no que diz respeito a teoria da verdade e suas implicações para o debate epistemológico. Após apresentar as contribuições dos pioneiros do pragmatismo William James, John Dewey e Charles S. Peirce e discutir aspectos da obra de W. Quine e Richard

Paulo Sérgio de Oliveira Simões Gala; Danilo Fernandes Araújo; José Márcio Rego

2004-01-01

238

Updated Fall 2014 Recomendaciones para el Manejo de la Mosca de Alas Manchadas (SWD) en  

E-print Network

Updated Fall 2014 Recomendaciones para el Manejo de la Mosca de Alas Manchadas (SWD) en los Gómez-Rodas. La Drosófila de las alas manchadas (SWD) es una plaga invasora que ataca las frutillas sitio de Internet www.ipm.msu.edu/SWD.htm donde encontrará hojas desplegables, guías para la

Isaacs, Rufus

239

The parA resolvase performs site-specific genomic excision in Arabidopsis  

Technology Transfer Automated Retrieval System (TEKTRAN)

We have designed a site-specific excision detection system in Arabidopsis to study the in planta activity of the small serine recombinase ParA. Using a transient expression assay as well as stable transgenic plant lines, we show that the ParA recombinase is catalytically active and capable of perfo...

240

Uma Estratégia para a Visualização do Céu e seus Elementos em Jogos  

Microsoft Academic Search

Resumo Uma visualização convincente do céu e seus elementos (nuvens, sol, lua, estrelas) é fundamental para agregar realismo aos jogos que usam cenários em ambientes externos. Como uma simulação precisa desses efeitos pode ser computacionalmente muito cara, muitos jogos empregam artifícios, visualizando o céu como texturas mapeadas em esferas e caixas envolventes. Neste trabalho, apresentamos uma estratégia simples para simular

MARCIO PEREIRA DE ARAUJO; WALDEMAR CELES

241

Livro de actividades em ToonTalk para o pré-escolar  

Microsoft Academic Search

Como orientação para os educadores, foi desenvolvido um conjunto de actividades adequadas a contextos de educação pré-escolar (crianças dos 3 aos 5 anos, na presença de educadores), que se apoiam no videojogo - ou videobrinquedo - ToonTalk. Para permitir uma fácil compreensão e acompanhamento por parte de crianças e educadores, foi então desenvolvida uma forma gráfica de transmitir essas actividades,

Leonel Morgado; Maria Gabriel Bulas Cruz; Ana Teresa Tavares; Christophe Moura

242

SNIFFER: Um Ambiente Computacional para Gerenciamento de Experimentos de Aprendizado de Maquina Supervisionado  

E-print Network

SNIFFER: Um Ambiente Computacional para Gerenciamento de Experimentos de Aprendizado de M vasta literatura em Estat´istica, Teoria de Aprendizado Computacional e outras ´areas afins, a ´ultima computacional para gerenciar avaliac¸~oes e comparac¸~oes experimentais em AM supervisionado, denominado

Batista, Gustavo

243

A Para-Canalicular Abscess Resembling an Inflamed Chalazion  

PubMed Central

Background. Lacrimal infections by Actinomyces are rare and commonly misdiagnosed for long periods of time. They account for 2% of all lacrimal diseases. Case Report. We report a case of a 70-year-old female patient suffering from a para-canalicular abscess in the medial canthus of the left eye, beside the lower punctum lacrimale, resembling a chalazion. Purulence exited from the punctum lacrimale due to inflammation of the inferior canaliculus (canaliculitis). When pressure was applied to the mass, a second exit of purulence was also observed under the palpebral conjunctiva below the lacrimal caruncle. A surgical excision was performed followed by administration of local antibiotic therapy. The histopathological examination of the extracted mass revealed the existence of actinomycosis. Conclusion. Persistent or recurrent infections and lumps of the eyelids should be thoroughly investigated. Actinomyces as a causative agent should be considered. Differential diagnosis is broad and should include canaliculitis, chalazion, and multiple types of neoplasias. For this reason, in nonconclusive cases, a histopathological examination should be performed. PMID:23762696

Almaliotis, Diamantis; Nakos, Elias; Siempis, Thomas; Koletsa, Triantafyllia; Kostopoulos, Ioannis; Chatzipantazi, Maria; Karampatakis, Vasileios

2013-01-01

244

Para-hydrogen induced polarization in heterogeneous hydrogenationreactions  

SciTech Connect

We demonstrate the creation and observation ofpara-hydrogen-induced polarization in heterogeneous hydrogenationreactions. Wilkinson's catalyst, RhCl(PPh3)3, supported on eithermodified silica gel or a polymer, is shown to hydrogenate styrene intoethylbenzene and to produce enhanced spin polarizations, observed throughNMR, when the reaction was performed with H2 gas enriched in the paraspinisomer. Furthermore, gaseous phase para-hydrogenation of propylene topropane with two catalysts, the Wilkinson's catalyst supported onmodified silica gel and Rh(cod)(sulfos) (cod = cycloocta-1,5-diene;sulfos) - O3S(C6H4)CH2C(CH2PPh2)3) supported on silica gel, demonstratesheterogeneous catalytic conversion resulting in large spin polarizations.These experiments serve as a direct verification of the mechanism ofheterogeneous hydrogenation reactions involving immobilized metalcomplexes and can be potentially developed into a practical tool forproducing catalyst-free fluids with highly polarized nuclear spins for abroad range of hyperpolarized NMR and MRI applications.

Koptyug, Igor V.; Kovtunov, Kirill; Burt, Scott R.; Anwar, M.Sabieh; Hilty, Christian; Han, Song-I; Pines, Alexander; Sagdeev, Renad Z.

2007-01-31

245

Para-dichlorobenzene toxicity – a review of potential neurotoxic manifestations  

PubMed Central

Background: Para-dichlorobenzene (PDCB) is an active ingredient of mothballs, deodorizers and fumigants. Due to the easy availability of this chemical, there is a considerable risk for accidental or intentional toxic exposure. Recently, multiple cases of PDCB toxicity due to mothball ingestion were reported. PDCB toxicity can affect multiple organ systems including liver, kidneys, skin, lung and the central nervous system (CNS). CNS toxicity often results in leukoencephalopathy and heterogeneous neurological manifestations. Objectives: The objective of this study was to illustrate the clinical presentation, imaging findings, diagnosis and management of PDCB toxicity. Methods: We carried out a literature review of the pharmacological and toxicological properties of PDCB. Conclusions: PDCB and other aromatic hydrocarbons are capable of CNS tissue damage and in promoting functional neurological decline. While very little is currently known about prevalence of PDCB addiction, it cannot be ruled out that its illicit use among young people is under-recognized. The number of cases of PDCB toxicity might also rise due to the increasing industrial and domestic use of this chemical. PMID:24790648

Dubey, Divyanshu; Sharma, Vibhash D.; Pass, Steven E.; Sawhney, Anshudha

2014-01-01

246

Phase diagram for ortho-para-hydrogen monolayers  

NASA Astrophysics Data System (ADS)

The phase diagram for orientational ordering of hydrogen monolayers on graphite and boron nitride is revised in view of current theory and experimental observations from nuclear magnetic resonance (NMR) studies recently reported for ortho-H2 concentrations 0.35 ? c ? 0.92 and temperatures 0.14 ? T ? 1.80 K. The characteristic interaction coupling ?0 = 0.50 ± 0.03 K and the crystalline field amplitude V0 = 0.70 ± 0.10 K are derived from experimental data, and distinct types of the local orientationally ordered structures are analysed using a proposed model for site-diluted uniaxial quadrupoles on a triangular plane lattice of hexagonal symmetry. The long-range periodic pinwheel structure and the short-range quadrupolar glass (QG) phase are stable above the 2D site-percolation limit, cp = 0.72, and for 0.48 < c < cp, respectively, where quadrupolar-order effects dominate. At very low T, the QG phase shows instability with respect to local dipole-like polarization effects and the ground state changes to a hindered rotor state. Two para-rotational local ordered PRA and PRB structures driven, respectively, by positive and negative crystalline fields are well distinguished, experimentally and theoretically, and are rather different from the unique PR phase suggested earlier by Harris and Berlinsky.

Sullivan, N. S.; Kokshenev, V. B.

2003-04-01

247

New gene responsible for para-aminobenzoate biosynthesis.  

PubMed

Folate is an essential cofactor in all living cells for one-carbon transfer reactions. para-Aminobenzoate (pABA), a building block of folate, is usually derived from chorismate in the shikimate pathway by reactions of aminodeoxychorismate synthase (PabA and -B) and 4-amino-4-deoxychorismate lyase (PabC). We previously suggested that an alternative pathway for pABA biosynthesis would operate in some microorganisms such as Lactobacillus fermentum and Nitrosomonas europaea since these bacteria showed a prototrophic phenotype to pABA despite the fact that there are no orthologs of pabA, -B, and -C in their genome databases. In this study, a gene of unknown function, NE1434, was obtained from N. europaea by shotgun cloning using a pABA-auxotrophic Escherichia coli mutant (?pabABC) as a host. A tracer experiment using [U-(13)C6]glucose suggested that pABA was de novo synthesized in the transformant. An E. coli ?pabABC?aroB mutant carrying the NE1434 gene exhibited a prototrophic phenotype to pABA, suggesting that compounds in the shikimate pathway including chorismate were not utilized as substrates by NE1434. Moreover, the CT610 gene, an ortholog of NE1434 located in the folate biosynthetic gene cluster in Chlamydia trachomatis, also complemented pABA-auxotrophic E. coli mutants. Taken together, these results suggest that NE1434 and CT610 participate in pABA biosynthesis. PMID:23972426

Satoh, Yasuharu; Kuratsu, Masahiro; Kobayashi, Daiki; Dairi, Tohru

2014-02-01

248

Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media  

DOEpatents

A method for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase.

Arnold, Frances H. (Pasadena, CA); Moore, Jeffrey C. (Pasadena, CA)

1998-01-01

249

Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media  

DOEpatents

A method is disclosed for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase. 43 figs.

Arnold, F.H.; Moore, J.C.

1999-05-25

250

Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media  

DOEpatents

A method for isolating and identifying modified para-nitrobenzyl esterases which exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase.

Arnold, Frances H. (Pasadena, CA); Moore, Jeffrey C. (Pasadena, CA)

1999-01-01

251

Para-nitrobenzyl esterases with enhanced activity in aqueous and nonaqueous media  

DOEpatents

A method is disclosed for isolating and identifying modified para-nitrobenzyl esterases. These enzymes exhibit improved stability and/or esterase hydrolysis activity toward selected substrates and under selected reaction conditions relative to the unmodified para-nitrobenzyl esterase. The method involves preparing a library of modified para-nitrobenzyl esterase nucleic acid segments (genes) which have nucleotide sequences that differ from the nucleic acid segment which encodes for unmodified para-nitrobenzyl esterase. The library of modified para-nitrobenzyl nucleic acid segments is expressed to provide a plurality of modified enzymes. The clones expressing modified enzymes are then screened to identify which enzymes have improved esterase activity by measuring the ability of the enzymes to hydrolyze the selected substrate under the selected reaction conditions. Specific modified para-nitrobenzyl esterases are disclosed which have improved stability and/or ester hydrolysis activity in aqueous or aqueous-organic media relative to the stability and/or ester hydrolysis activity of unmodified naturally occurring para-nitrobenzyl esterase. 43 figs.

Arnold, F.H.; Moore, J.C.

1998-04-21

252

All the three ParaHox genes are present in Nuttallochiton mirandus (Mollusca: polyplacophora): evolutionary considerations.  

PubMed

The ParaHox gene cluster contains three homeobox genes, Gsx, Xlox and Cdx and has been demonstrated to be an evolutionary sister of the Hox gene cluster. Among deuterostomes the three genes are found in the majority of taxa, whereas among protostomes they have so far been isolated only in the phylum Sipuncula. We report the partial sequences of all three ParaHox genes in the polyplacophoran Nuttallochiton mirandus, the first species of the phylum Mollusca where all ParaHox genes have been isolated. This finding has phylogenetic implications for the phylum Mollusca and for its relationships with the other lophotrochozoan taxa. PMID:16331637

Barucca, Marco; Biscotti, Maria A; Olmo, Ettore; Canapa, Adriana

2006-03-15

253

Endovascular Treatment of a Ruptured Para-Anastomotic Aneurysm of the Abdominal Aorta  

SciTech Connect

We report a case of a ruptured para-anastomotic aortic aneurysm treated with implantation of a bifurcated stent-graft. A 72-year-old patient, who had undergone aortobifemoral bypass for aortoiliac occlusive disease 16 years ago, presented with a ruptured para-anastomotic aortic aneurysm. A bifurcated stent-graft was successfully deployed into the old bifurcated graft. This is the first report of a bifurcated stent-graft being placed through an 'end-to-side' anastomosed old aortobifemoral graft. Endovascular treatment of ruptured para-anastomotic aortic aneurysms can be accomplished successfully, avoiding open surgery which is associated with increased mortality and morbidity.

Sfyroeras, Giorgos S.; Lioupis, Christos, E-mail: lioupisC@vodafone.net.gr; Bessias, Nikolaos; Maras, Dimitris [Red Cross Hospital of Athens, Department of Vascular Surgery (Greece); Pomoni, Maria [Red Cross Hospital of Athens, Department of Radiology (Greece); Andrikopoulos, Vassilios [Red Cross Hospital of Athens, Department of Vascular Surgery (Greece)

2008-07-15

254

Time is of the essence for ParaHox homeobox gene clustering.  

PubMed

ParaHox genes, and their evolutionary sisters the Hox genes, are integral to patterning the anterior-posterior axis of most animals. Like the Hox genes, ParaHox genes can be clustered and exhibit the phenomenon of colinearity - gene order within the cluster matching gene activation. Two new instances of ParaHox clustering provide the first examples of intact clusters outside chordates, with gene expression lending weight to the argument that temporal colinearity is the key to understanding clustering. PMID:23803337

Garstang, Myles; Ferrier, David E K

2013-01-01

255

Time is of the essence for ParaHox homeobox gene clustering  

PubMed Central

ParaHox genes, and their evolutionary sisters the Hox genes, are integral to patterning the anterior-posterior axis of most animals. Like the Hox genes, ParaHox genes can be clustered and exhibit the phenomenon of colinearity - gene order within the cluster matching gene activation. Two new instances of ParaHox clustering provide the first examples of intact clusters outside chordates, with gene expression lending weight to the argument that temporal colinearity is the key to understanding clustering. See research articles: http://www.biomedcentral.com/1741-7007/11/68 and http://www.biomedcentral.com/1471-2148/13/129 PMID:23803337

2013-01-01

256

Dinâmica molecular de hidrolases para sacarificação : de celulose e proteínas correlatas.  

E-print Network

??A biomassa lignocelulósica proveniente do bagaço de cana-de-açúcar e de outras matérias-primas é um material altamente promissor para a geração de biocombustíveis renováveis e ambientalmente… (more)

Érica Teixeira Prates

2013-01-01

257

Controlling the Regiospecific Oxidation of Aromatics via Active Site Engineering of Toluene para-Monooxygenase of  

E-print Network

-Monooxygenase of Ralstonia pickettii PKO1* Received for publication, September 8, 2004, and in revised form, October 18, 2004- and dihydroxy- lated products. Toluene para-monooxygenase (TpMO,1 formerly known as T3MO) of Ralstonia pickettii

Wood, Thomas K.

258

Lo que usted debe saber antes de dar sus tejidos para investigación médica  

Cancer.gov

Contiene información sobre las cosas que usted debe saber y tener en cuenta al tomar una decisión de donar sus tejidos para investigación. El tejido puede incluir materiales de su cuerpo tales como piel, cabello, uñas, sangre y orina.

259

Desenvolvimento de Sistemas e Servios para a Internet com Interface WWW Jos Luis Borbinha*  

E-print Network

MODELO COMPUTACIONAL DO WWW O modelo computacional do WWW baseia-se no modelo cliente-servidor conforme Especializado Servidor WWW Figura 1: O modelo computacional WWW. O HTTP é bastante adequado para a pesquisa e

da Silva, Alberto Rodrigues

260

Curing of some epoxy-acrylate glycidyl ethers based on para-alkyl substituted phenols  

Microsoft Academic Search

Curing of epoxy-acrylate glycidyl ethers based on phenol and para-alkyl [?CH3, ?C(CH3)3, ?C9H19] substituted phenols in the presence of benzoyl peroxide was examined by differential scanning calorimetry at different heating rates. The tested monomers polymerize first as acrylic monomers and the reaction continues by the curing process only in the case of the epoxy-acrylate glycidyl ethers of para-alkyl substituted phenols,

C. N. Ca?caval; D. Ro?u; A. Stoleriu

1997-01-01

261

Synthesis and spectral studies of 2-aminopyridinium para-nitrobenzoate: A novel optoelectronic crystal  

Microsoft Academic Search

A new crystal 2-aminopyridinium para-nitro benzoate (C5H7N2+·C7H4NO4?) has been synthesized by the reaction of 2-aminopyridine with para-nitro benzoic acid by slow evaporation method. As synthesized crystals have been characterized by X-ray diffraction (XRD), Fourier transformed infrared (FTIR), and Ultra violet (UV) spectral studies. The XRD and FTIR results indicated that the synthesized compound has the crystal structure of monoclinic with

Bhuvana K. Periyasamy; Robinson S. Jebas; Balasubramanian Thailampillai

2007-01-01

262

MiCCS4Mobile Middleware para Comunicao e Coordenao Segura em Redes Ad-hoc  

E-print Network

MiCCS4Mobile Middleware para Comunicação e Coordenação Segura em Redes Ad-hoc com Participantes desenvolvimento de aplicações móveis. Algumas aplicações exploram protocolos de redes sem fios e a mobilidade dos dispositivos para aumentar as suas funciona- lidades. A classe de protocolos de redes sem fios com dispositivos

Neves, Nuno

263

Arquitectura del Sistema de Gestin del ancho de Banda y Proteccin (SGBP) para entornos de redes  

E-print Network

Arquitectura del Sistema de Gestión del ancho de Banda y Protección (SGBP) para entornos de redes de banda y protección para entornos de redes MPLS. El sistema está formado por dos módulos, el de de banda. 1. Introducción La evolución de las tecnologías de las comunicaciones hacia redes de

Ortega, Eusebi Calle

264

Metronet: software para mediciÛn de calidad de servicio en voz y video  

Microsoft Academic Search

ó El proyecto Metronet se propuso como objetivos desarrollar una metodologÌa y un software para medir los dife- rentes parÆmetros de calidad de servicio (QoS) en aplicaciones de voz y video. El proyecto se realizÛ avanzando en forma casi paralela en la investigaciÛn teÛrica con simuladores, la construcciÛn de prototipos para vericaciÛn en redes reales de los resultados teÛricos y

Pablo Belzarena; Federico Larroca

265

APLICACIÓN DE UNA ZEOLITA PRE-TRATADA PARA MINIMIZAR EL IMPACTO DE LA CONTAMINACION CON ARSENICO  

Microsoft Academic Search

Se han reconocido a las zeolitas y a los metales o compuestos metálicos como adsorbentes selectivos para cationes y aniones de soluciones acuosas para minimizar el impacto de algunos contaminantes en el medio ambiente. Los óxidos como MgO, CaO y ZnO, pueden dispersarse en las cavidades de las zeolitas e incrementar sus propiedades. Actualmente existen diversas formas de aplicación como,

FLERIDA A. MEJÍA ZAMUDIO; JESUS L. VALENZUELA GARCÍA

2009-01-01

266

ParaLearn: a massively parallel, scalable system for learning interaction networks on FPGAs  

Microsoft Academic Search

ParaLearn is a scalable, parallel FPGA-based system for learning interaction networks using Bayesian statistics. ParaLearn includes problem specific parallel\\/scalable algorithms, system software and hardware architecture to address this complex problem. Learning interaction networks from data uncovers causal relationships and allows scientists to predict and explain a system's behavior. Interaction networks have applications in many fields, though we will discuss them

Narges Bani Asadi; Christopher W. Fletcher; Greg Gibeling; John Wawrzynek; Wing H. Wong; Garry P. Nolan; Zoey Zhou

2010-01-01

267

Los CDC harn pruebas para detectar formaldehdo en casas mviles y trileres  

E-print Network

Los CDC harán pruebas para detectar formaldehído en casas móviles y tráileres A solicitud de FEMA dehído en un total de 500 casas móviles y tráileres entregados por FEMA. Los CDC harán estas pruebas en viviendas. Además, los resultados de estas pruebas ayudarán a FEMA a buscar otras opciones de vivienda para

268

DOI: 10.1002/cphc.200700061 Separation of ortho-and para-  

E-print Network

levels are go =3 and gp =1 for oH2 and pH2, respectively. The rotational angular momentum j of H2 can of the Universe[4] and critical for fundamental studies of low-temperature physics.[1] The lower- energy para. The total nuclear spin of para-hydrogen, pH2, is zero, while the total nuclear spin of ortho-hydrogen, oH2

Krems, Roman

269

ComFiM -Um Jogo Colaborativo para Estimular a Comunicao de Crianas com Autismo  

E-print Network

ComFiM - Um Jogo Colaborativo para Estimular a Comunicação de Crianças com Autismo Paula Ceccon desenvolvimento e a avalia¸c~ao de um jogo colaborativo chamado ComFiM, para interfa- ces m´oveis tang´iveis. O jogo foi desenvolvido com base nos requisitos de um grupo de crian¸cas com autismo, visando estimular

Barbosa, Alberto

270

CantoblancoNoticias de la Universidad Autnoma de Madrid Universitario para  

E-print Network

para Mayores (PUMA) 4 Premio de Medio Ambiente 5 Actividades Culturales 6 La república de las mujeres 7 Universitario para Mayores (PUMA), cuya confe- rencia de apertura, La percepción de los problemas sociales en la Sociológicas (CIS) y catedrá- tico de la Facultad de Derecho de la UAM. El PUMA, que inició su andadura el

Autonoma de Madrid, Universidad

271

Physisorption and ortho-para conversion of molecular hydrogen on solid surfaces  

NASA Astrophysics Data System (ADS)

Molecular hydrogen exists in nuclear-spin isomers of ortho and para species according to the total nuclear spin. These species are correlated to the rotational states with even and odd rotational quantum numbers because of the symmetry of the total wavefunction with respect to the permutation of the two nuclei. Although interconversion between the ortho and para states is extremely slow in an isolated state, the conversion is promoted in a physisorption state via interaction with surfaces of not only magnetic but also diamagnetic materials. In a physisorption state, the rotational motion of hydrogen molecules is modified due to the potential anisotropy. The physisorption properties and interconversion rate of the ortho and para hydrogen have recently been investigated on well-defined surfaces, which allow detailed comparison with theory. Furthermore, relative abundance of the ortho and para hydrogen in astronomical circumstances has been reported in recent years, which often shows a value out of equilibrium with the environment temperature. Physisorption and ortho-para conversion on the surfaces of interstellar media are expected to enable deeper understanding of astronomical phenomena. In this article, we review recent progress of experimental and theoretical studies on the physisorption and ortho-para conversion of molecular hydrogen and its relevance to the recent astronomical observation.

Fukutani, K.; Sugimoto, T.

2013-12-01

272

Estimación de la senda óptima de extracción para un recurso natural no renovable: caso de estudio para la actividad carbonífera a cielo abierto en el  

Microsoft Academic Search

la economía de los recursos naturales, permite conocer la forma como se extrae sosteniblemente un recurso natural renovable y no renovable. De esta forma, el presente estudio con información financiera y sobre costos totales de producción (estimados mediante un modelo de datos panel con efectos aleatorios), para siete principales empresas explotadoras de carbón en el centro del departamento del Cesar,

Jorge Andrés Perdomo Calvo; Ana María Jaramillo Pérez; Juan Carlos Mendieta López

2010-01-01

273

ALCHEMIST (Estudios sobre la Secuenciación e Identificación de Marcadores para el Mejoramiento de la Terapia Adjuvante para el Cáncer de Pulmón): Preguntas y respuestas  

Cancer.gov

ALCHEMIST comprende tres estudios clínicos integrados de medicina de precisión diseñados para identificar a personas con cáncer de pulmón en estadio inicial cuyos tumores tienen ciertos cambios genéticos poco comunes. También buscan evaluar si los tratamientos con medicamentos que combaten esos cambios moleculares pueden mejorar la supervivencia

274

SimTJS: A Model for Developing Serious Games for Training SimTJS: Uma Arquitetura para o Desenvolvimento de Jogos Serios para  

E-print Network

Desenvolvimento de Jogos S´erios para Treinamento Daniel Trindade, Peter Dam, Alberto Raposo Tecgraf, Departamento jogos s´erios que imitam cen´arios reais, permitindo que os profissionais realizem operac¸~oes que antes componentes que comp~oem a arquitetura, al´em de exemplos de utilizac¸~ao da mesma. Keywords-Jogos S

Barbosa, Alberto

275

Educação para sustentabilidade : turismo ecopedagógico no Centro de Permacultura Asa Branca e implantação de um espaço permacultural na Escola Classe Jardim Botânico.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Departamento de Engenharia Florestal, 2011. Este trabalho aborda a Permacultura como estratégia para realização da educação para sustentabilidade por meio do… (more)

Jacintho, Thiago Rocha dos Santos

2011-01-01

276

Competing ParA Structures Space Bacterial Plasmids Equally over the Nucleoid.  

PubMed

Low copy number plasmids in bacteria require segregation for stable inheritance through cell division. This is often achieved by a parABC locus, comprising an ATPase ParA, DNA-binding protein ParB and a parC region, encoding ParB-binding sites. These minimal components space plasmids equally over the nucleoid, yet the underlying mechanism is not understood. Here we investigate a model where ParA-ATP can dynamically associate to the nucleoid and is hydrolyzed by plasmid-associated ParB, thereby creating nucleoid-bound, self-organizing ParA concentration gradients. We show mathematically that differences between competing ParA concentrations on either side of a plasmid can specify regular plasmid positioning. Such positioning can be achieved regardless of the exact mechanism of plasmid movement, including plasmid diffusion with ParA-mediated immobilization or directed plasmid motion induced by ParB/parC-stimulated ParA structure disassembly. However, we find experimentally that parABC from Escherichia coli plasmid pB171 increases plasmid mobility, inconsistent with diffusion/immobilization. Instead our observations favor directed plasmid motion. Our model predicts less oscillatory ParA dynamics than previously believed, a prediction we verify experimentally. We also show that ParA localization and plasmid positioning depend on the underlying nucleoid morphology, indicating that the chromosomal architecture constrains ParA structure formation. Our directed motion model unifies previously contradictory models for plasmid segregation and provides a robust mechanistic basis for self-organized plasmid spacing that may be widely applicable. PMID:25521716

Ietswaart, Robert; Szardenings, Florian; Gerdes, Kenn; Howard, Martin

2014-12-01

277

Competing ParA Structures Space Bacterial Plasmids Equally over the Nucleoid  

PubMed Central

Low copy number plasmids in bacteria require segregation for stable inheritance through cell division. This is often achieved by a parABC locus, comprising an ATPase ParA, DNA-binding protein ParB and a parC region, encoding ParB-binding sites. These minimal components space plasmids equally over the nucleoid, yet the underlying mechanism is not understood. Here we investigate a model where ParA-ATP can dynamically associate to the nucleoid and is hydrolyzed by plasmid-associated ParB, thereby creating nucleoid-bound, self-organizing ParA concentration gradients. We show mathematically that differences between competing ParA concentrations on either side of a plasmid can specify regular plasmid positioning. Such positioning can be achieved regardless of the exact mechanism of plasmid movement, including plasmid diffusion with ParA-mediated immobilization or directed plasmid motion induced by ParB/parC-stimulated ParA structure disassembly. However, we find experimentally that parABC from Escherichia coli plasmid pB171 increases plasmid mobility, inconsistent with diffusion/immobilization. Instead our observations favor directed plasmid motion. Our model predicts less oscillatory ParA dynamics than previously believed, a prediction we verify experimentally. We also show that ParA localization and plasmid positioning depend on the underlying nucleoid morphology, indicating that the chromosomal architecture constrains ParA structure formation. Our directed motion model unifies previously contradictory models for plasmid segregation and provides a robust mechanistic basis for self-organized plasmid spacing that may be widely applicable. PMID:25521716

Gerdes, Kenn; Howard, Martin

2014-01-01

278

Cajaninstilbene acid protects corticosterone-induced injury in PC12 cells by inhibiting oxidative and endoplasmic reticulum stress-mediated apoptosis.  

PubMed

It has been reported that high corticosterone level could damage the normal hippocampal neurons both in vitro and in vivo. Furthermore, high concentration of corticosterone induced impair in PC12 cells has been widely used as in vitro model to screen neuroprotective agents. Cajaninstilbene acid (CSA), a natural stilbene isolated from Cajanus cajan leaves, has various activities. In present study, we investigated the effect of CSA on corticosterone-induced cell apoptosis and explored its possible signaling pathways in PC12 cells. We demonstrated that pretreatment with CSA at the concentrations of 1-8 ?mol/L remarkably reduced the cytotoxicity induced by 200 ?mol/L of corticosterone in PC12 cells by MTT, and further confirmed the neuroprotection by Hoechst 33342 and PI double staining and lactate dehydrogenase release (LDH) assay at the concentration of 8 ?mol/L. Moreover, the cytoprotection of CSA was proved to be associated with the homeostasis of intracellular Ca(2+), relieving corticosterone-induced oxidative stress by decreasing the contents of ROS and malondialdehyde (MDA), increasing the activities of superoxide dismutase (SOD) and catalase (CAT), and the stabilization of ER stress via down-regulating the expression of ER chaperone protein glucose-regulated protein 78 (GRP78), ER stress associated transcription factor C/EBP homologous protein (CHOP/GADD153), and the X box-binding protein-1 (XBP-1), as well as the expression of ER stress-specific protein caspase-12 and its downstream protein caspase-9. Considering all the findings, it is suggested that the neuroprotective activity of CSA against the impairment induced by corticosterone in PC12 cells was through the inhibition of oxidative stress and ER stress-mediated pathway. PMID:25193317

Liu, Yamin; Shen, Shengnan; Li, Zongyang; Jiang, Yumao; Si, Jianyong; Chang, Qi; Liu, Xinmin; Pan, Ruile

2014-12-01

279

Genotypic characterization of phage-typed indigenous soybean bradyrhizobia and their host range symbiotic effectiveness.  

PubMed

Analysis of genetic diversity among indigenous rhizobia and its symbiotic effectiveness with soybean cultivar is important for development of knowledge about rhizobial ecology. In India, little is known about the genetic resources and diversity of rhizobia nodulating soybean. Indigenous bradyrhizobia isolated from root nodules of soybean plants, collected from traditional cultivating regions of two states (Madhya Pradesh and Uttar Pradesh) of India, were screened for bacteriophage sensitivity to identify successful broad host range symbiotic effectivity. Of 172 rhizobial isolates, 91 showed sensitivities to eight lytic phages and form ten groups on the basis of sensitivity patterns. The genetic diversity of 23 isolates belonging to different phage groups was assessed along with that of strains USDA123 and USDA94 by the restriction fragment length polymorphism (RFLP) analysis of 16S rDNA, intergenic spacer (IGS) (16S-23S rDNA), and DnaK regions. RFLP analysis of 16S rDNA formed 5 groups, whereas 19 and 9 groups were revealed by IGS and the DnaK genes, respectively. The IGS regions showed many amplified polymorphic bands. Nine isolates which revealed high RFLP polymorphism in the abovementioned regions (16S rRNA, IGS, DnaK) were used for 16S rRNA sequence analyses. The results indicate that taxonomically, all isolates were related to Rhizobium etli, Bradyrhizobium spp., and Bradyrhizobium yuanmingense. The doubling time of isolates varied from 9 h (MPSR155) to 16.2 h (MPSR068) in YM broth. Five isolates which did not show cross infectivity with isolated phage strains were studied for symbiotic efficiency. All isolates showed broad host range symbiotic effectiveness forming effective nodules on Vigna mungo, Vigna radiata, Vigna unguiculata, and Cajanus cajan. The present study provides information on genetic diversity and host range symbiosis of indigenous soybean rhizobia typed by different phages. PMID:21984348

Jaiswal, Sanjay Kumar; Anand, Akhil; Dhar, Banshi; Vaishampayan, Akhouri

2012-01-01

280

A survey of the nutritional and haemagglutination properties of legume seeds generally available in the UK.  

PubMed

Eighty-five samples from fifteen different legume seed lines generally available in the UK were examined by measurements of their net protein utilization by rats and by haemagglutination tests with erythrocytes from a number of different animal species. From these results the seeds were classified into four broad groups. Group a seeds from most varieties of kidney (Phaseolus vulgaris), runner (Phaseolus coccineus) and tepary (Phaseolus acutifolius) beans showed high reactivity with all cell types and were also highly toxic. Group b, which contained seeds from lima or butter beans (Phaseolus lunatus) and winged bean (Psophocarpus tetragonolobus), agglutinated only human and pronase-treated rat erythrocytes. These seeds did not support proper growth of the rats although the animals survived the 10 d experimental period. Group c consisted of seeds from lentils (Lens culinaris), peas (Pisum sativum), chick-peas (Cicer arietinum), blackeyed peas (Vigna sinensis), pigeon peas (Cajanus cajan), mung beans (Phaseolus aureus), field or broad beans (Vicia faba) and aduki beans (Phaseolus angularis). These generally had low reactivity with all cells and were non-toxic. Group d, represented by soya (Glycine max) and pinto (Phaseolus vulgaris) beans, generally had low reactivity with all cells but caused growth depression at certain dietary concentrations. This growth depression was probably mainly due to antinutritional factors other than lectins. Lectins from group a seeds showed many structural and immunological similarities. However the subunit composition of the lectin from the tepary bean samples was different from that of the other bean lectins in this or any other groups. PMID:6615758

Grant, G; More, L J; McKenzie, N H; Stewart, J C; Pusztai, A

1983-09-01

281

Comparative sequence analysis of nitrogen fixation-related genes in six legumes  

PubMed Central

Legumes play an important role as food and forage crops in international agriculture especially in developing countries. Legumes have a unique biological process called nitrogen fixation (NF) by which they convert atmospheric nitrogen to ammonia. Although legume genomes have undergone polyploidization, duplication and divergence, NF-related genes, because of their essential functional role for legumes, might have remained conserved. To understand the relationship of divergence and evolutionary processes in legumes, this study analyzes orthologs and paralogs for selected 20 NF-related genes by using comparative genomic approaches in six legumes i.e., Medicago truncatula (Mt), Cicer arietinum, Lotus japonicus, Cajanus cajan (Cc), Phaseolus vulgaris (Pv), and Glycine max (Gm). Subsequently, sequence distances, numbers of synonymous substitutions per synonymous site (Ks) and non-synonymous substitutions per non-synonymous site (Ka) between orthologs and paralogs were calculated and compared across legumes. These analyses suggest the closest relationship between Gm and Cc and the highest distance between Mt and Pv in six legumes. Ks proportional plots clearly showed ancient genome duplication in all legumes, whole genome duplication event in Gm and also speciation pattern in different legumes. This study also reports some interesting observations e.g., no peak at Ks 0.4 in Gm-Gm, location of two independent genes next to each other in Mt and low Ks values for outparalogs for three genes as compared to other 12 genes. In summary, this study underlines the importance of NF-related genes and provides important insights in genome organization and evolutionary aspects of six legume species analyzed. PMID:23986765

Kim, Dong Hyun; Parupalli, Swathi; Azam, Sarwar; Lee, Suk-Ha; Varshney, Rajeev K.

2013-01-01

282

Cajaninstilbene Acid Relaxes Rat Renal Arteries: Roles of Ca2+ Antagonism and Protein Kinase C-Dependent Mechanism  

PubMed Central

Cajaninstilbene acid (CSA) is a major active component present in the leaves of Cajanus cajan (L.) Millsp. The present study explores the underlying cellular mechanisms for CSA-induced relaxation in rat renal arteries. Vascular reactivity was examined in arterial rings that were suspended in a Multi Myograph System and the expression of signaling proteins was assessed by Western blotting method. CSA (0.1–10 µM) produced relaxations in rings pre-contracted by phenylephrine, serotonin, 9, 11-dideoxy-9?, 11?-epoxymethanoprostaglandin F2? (U46619), and 60 mM KCl. CSA-induced relaxations did not show difference between genders and were unaffected by endothelium denudation, nor by treatment with NG-nitro-L-arginine methyl ester, indomethacin, ICI-182780, tetraethylammonium ion, BaCl2, glibenclamide, 4-aminopyridine or propranolol. CSA reduced contraction induced by CaCl2 (0.01–5 mM) in Ca2+-free 60 mM KCl solution and by 30 nM (?)-Bay K8644 in 15 mM KCl solution. CSA inhibited 60 mM KCl-induced Ca2+ influx in smooth muscle of renal arteries. In addition, CSA inhibited contraction evoked by phorbol 12-myristate 13-acetate (PMA, protein kinase C agonist) in Ca2+-free Krebs solution. Moreover, CSA reduced the U46619- and PMA-induced phosphorylation of myosin light chain (MLC) at Ser19 and myosin phosphatase target subunit 1 (MYPT1) at Thr853 which was associated with vasoconstriction. CSA also lowered the phosphorylation of protein kinase C (PKC?) at Thr505. In summary, the present results suggest that CSA relaxes renal arteries in vitro via multiple cellular mechanisms involving partial inhibition of calcium entry via nifedipine-sensitive calcium channels, protein kinase C and Rho kinase. PMID:23056567

Lau, Chi Wai; Lin, Shun-Ming; Zhang, Qian-Lan; Yao, Nan; Wang, Ying; Wu, Xin; Huang, Yu; Ye, Wen-Cai

2012-01-01

283

Cajaninstilbene acid relaxes rat renal arteries: roles of Ca2+ antagonism and protein kinase C-dependent mechanism.  

PubMed

Cajaninstilbene acid (CSA) is a major active component present in the leaves of Cajanus cajan (L.) Millsp. The present study explores the underlying cellular mechanisms for CSA-induced relaxation in rat renal arteries. Vascular reactivity was examined in arterial rings that were suspended in a Multi Myograph System and the expression of signaling proteins was assessed by Western blotting method. CSA (0.1-10 µM) produced relaxations in rings pre-contracted by phenylephrine, serotonin, 9, 11-dideoxy-9?, 11?-epoxymethanoprostaglandin F(2?) (U46619), and 60 mM KCl. CSA-induced relaxations did not show difference between genders and were unaffected by endothelium denudation, nor by treatment with N(G)-nitro-L-arginine methyl ester, indomethacin, ICI-182780, tetraethylammonium ion, BaCl(2), glibenclamide, 4-aminopyridine or propranolol. CSA reduced contraction induced by CaCl(2) (0.01-5 mM) in Ca(2+)-free 60 mM KCl solution and by 30 nM (-)-Bay K8644 in 15 mM KCl solution. CSA inhibited 60 mM KCl-induced Ca(2+) influx in smooth muscle of renal arteries. In addition, CSA inhibited contraction evoked by phorbol 12-myristate 13-acetate (PMA, protein kinase C agonist) in Ca(2+)-free Krebs solution. Moreover, CSA reduced the U46619- and PMA-induced phosphorylation of myosin light chain (MLC) at Ser19 and myosin phosphatase target subunit 1 (MYPT1) at Thr853 which was associated with vasoconstriction. CSA also lowered the phosphorylation of protein kinase C (PKC?) at Thr505. In summary, the present results suggest that CSA relaxes renal arteries in vitro via multiple cellular mechanisms involving partial inhibition of calcium entry via nifedipine-sensitive calcium channels, protein kinase C and Rho kinase. PMID:23056567

Zhang, Dong-Mei; Li, Yong; Cheang, Wai San; Lau, Chi Wai; Lin, Shun-Ming; Zhang, Qian-Lan; Yao, Nan; Wang, Ying; Wu, Xin; Huang, Yu; Ye, Wen-Cai

2012-01-01

284

Carbon Dioxide and Light Responses of Photosynthesis in Cowpea and Pigeonpea during Water Deficit and Recovery 1  

PubMed Central

Greenhouse-grown pigeonpea (Cajanus cajan, [L.] Millsp.; cultivar UW-10) and cowpea (Vigna unguiculata, [L.] Walp.; cultivar California No. 5) were well-watered (control) or subjected to low water potential by withholding water to compare their modes of adaptation to water-limited conditions. Leaf CO2 exchange rate (CER), leaf diffusive conductance to CO2 (gl), and CO2 concentration in the leaf intercellular air space (Ci) were determined at various CO2 concentrations and photon flux densities (PFD) of photosynthetically active radiation (400 to 700 nanometer). In cowpea, gl declined to less than 15% of controls and total water potential (?w) at midafternoon declined to ?0.8 megapascal after 5 days of withholding water, whereas gl in pigeonpea was about 40% of controls even though midafternoon ?w was ?1.9 megapascal. After 8 days of withholding water, ?w at midafternoon declined to ?0.9 and ?2.4 megapascals in cowpea and pigeonpea, respectively. The solute component of water potential (?s) decreased substantially less in cowpea than pigeonpea. Photosynthetic CER at saturation photon flux density (PFD) and ambient external CO2 concentration (360 microliters per liter) on day 5 of withholding decreased by 83 and 55% in cowpea and pigeonpea, respectively. When measured at external, CO2 concentration in bulk air of 360 microliters per liter, the CER of cowpea had fully recovered to control levels 3 days after rewatering; however, at 970 microliters per liter the PFD-saturated CERs of both species were substantially lower than in controls, indicating residual impairment. In stressed plants of both species the CER responses to Ci from 250 to 600 microliters per liter indicated that a substantial nonstomatal inhibition of CER had occurred. Although the sensitivity of gl to water limitation in cowpea suggested a dehydration avoidance response, parallel measurements of CER at various Ci and PFD indicated that photosynthetic activity of cowpea mesophyll was substantially inhibited by the water-limited treatment. PMID:16665843

Lopez, Francis B.; Setter, Tim L.; McDavid, Charles R.

1987-01-01

285

Detached leaf assay to screen for host plant resistance to Helicoverpa armigera.  

PubMed

The noctuid Helicoverpa armigera (Hübner) is a major insect pest of chickpea Cicer arietinum L., pigeonpea Cajanus cajan (L.) Millsp., peanut Arachis hypogaea L., and cotton Gossypium spp., and host plant resistance is an important component for managing this pest in different crops. Because of variations in insect density and staggered flowering of the test material, it is difficult to identify cultivars with stable resistance to H. armigera across seasons and locations. To overcome these problems, we standardized the detached leaf assay to screen for resistance to this pest in chickpea, pigeonpea, peanut, and cotton under uniform insect pressure under laboratory conditions. Terminal branch (three to four fully expanded leaves) of chickpea, first fully expanded leaf of cotton, trifoliate of pigeonpea, or quadrifoliate of peanut, embedded in 3% agar-agar in a plastic cup/jar of appropriate size (250-500-ml capacity) infested with 10-20 neonate larvae can be used to screen for resistance to H. armigera. This technique keeps the leaves in a turgid condition for approximately 1 wk. The experiments can be terminated when the larvae have caused > 80% leaf damage in the susceptible check or when differences in leaf feeding between the resistant and susceptible checks are maximum. Detached leaf assay can be used as a rapid screening technique to evaluate germplasm, segregating breeding materials, and mapping populations for resistance to H. armigera in a short span of time with minimal cost, and under uniform insect infestation. It also provides useful information on antibiosis component of resistance to the target insect pest. PMID:15889750

Sharma, Hari C; Pampapathy, G; Dhillon, Mukesh K; Ridsdill-Smith, James T

2005-04-01

286

Estimation of Carbon Storage in Para Rubber Plantation in Eastern Thailand  

NASA Astrophysics Data System (ADS)

This study aims to estimate the carbon stock and sequestration in Para rubber plantation of East Thailand using the THAICHOTE (Thailand Earth Observation System data). For that purpose we identify the area of every stage class Para rubber plantation by the analysis of different image objects (i.e., rule base and multiple regression classifications) and we map the carbon stock and sequestration of each Para rubber class using biomass allometric regressions and carbon content equations. THAICHOTE data include Multispectral image (4 bands at 15x15 m spatial resolution), Panchromatic image (2x2 m spatial resolution) and Stereo image, data acquisition from December 2011-April 2012. The preliminary investigated area is located in Wangchun, (Eastern, Thailand) and covers about 20 Km2. Calibrating the class stage, by image analysis that integrated edge-based segmentation, reflectance, remote sensing indices, texture analysis and canopy height model (CHM), we found that best classification was obtained by multiple regression (accuracy of 80%) compared to rule base logical operation (accuracy 70%) suggesting that manual 3D stereo measurements or Light Detection And Ranging (LiDAR) both are able to construct the CHM. The results of this study indicate that for a total Para rubber biomass of 14,651 tons, the amount of stored carbon is of 7,326 tons. Mature stage of Para rubber plantations exhibits the highest capacity of sequestering with a global flux of 0.21 tons C/ Km2/year.

Charoenjit, K.; Zuddas, P.; Allemand, P.

2012-12-01

287

Cold neutron production in liquid para- and normal-H 2 moderators  

NASA Astrophysics Data System (ADS)

A neutron transport analysis is performed for liquid H 2 moderators with 100% para and normal (ortho:para=0.75:0.25) fractions. Four sets of energy-averaged cross-sections (group constants) for liquid ortho- and para-H 2 at melting and boiling points are generated and neutron energy range between 0.1 ?eV and 10 eV is broken into 80 groups. Basic moderating characteristics are studied of a model cold-neutron source in a one-dimensional bare-slab geometry. It is shown that liquid para-H 2 is superior in cold neutron production to liquid normal H 2 on account of a para-to-ortho transition (molecular rotational excitation) and a good transmission property with a mean free path of about 10 cm. In the case of neutron extraction from the inside of the source, high intensity of cold neutrons is possible with liquid normal H 2 at higher temperatures up to the boiling point.

Morishima, N.; Matsuo, Y.

2002-09-01

288

ParaPep: a web resource for experimentally validated antiparasitic peptide sequences and their structures  

PubMed Central

ParaPep is a repository of antiparasitic peptides, which provides comprehensive information related to experimentally validated antiparasitic peptide sequences and their structures. The data were collected and compiled from published research papers, patents and from various databases. The current release of ParaPep holds 863 entries among which 519 are unique peptides. In addition to peptides having natural amino acids, ParaPep also consists of peptides having d-amino acids and chemically modified residues. In ParaPep, most of the peptides have been evaluated for growth inhibition of various species of Plasmodium, Leishmania and Trypanosoma. We have provided comprehensive information about these peptides that include peptide sequence, chemical modifications, stereochemistry, antiparasitic activity, origin, nature of peptide, assay types, type of parasite, mode of action and hemolytic activity. Structures of peptides consisting of natural, as well as modified amino acids have been determined using state-of-the-art software, PEPstr. To facilitate users, various user-friendly web tools, for data fetching, analysis and browsing, have been integrated. We hope that ParaPep will be advantageous in designing therapeutic peptides against parasitic diseases. Database URL: http://crdd.osdd.net/raghava/parapep/ PMID:24923818

Mehta, Divya; Anand, Priya; Kumar, Vineet; Joshi, Anshika; Mathur, Deepika; Singh, Sandeep; Tuknait, Abhishek; Chaudhary, Kumardeep; Gautam, Shailendra K.; Gautam, Ankur; Varshney, Grish C.; Raghava, Gajendra P.S.

2014-01-01

289

In Vivo Imaging of ParaCEST Agents Using Frequency Labeled Exchange Transfer (FLEX) MRI  

PubMed Central

Purpose A main obstacle to in vivo applications of paramagnetic chemical exchange saturation transfer (paraCEST) is interference from endogenous tissue magnetization transfer contrast (MTC). The suitability of excitation-based frequency labeled exchange transfer (FLEX) to separate out such MTC effects in vivo was tested. Methods The FLEX sequence measures modulation of the water signal based on the chemical shift evolution of solute proton magnetization as a function of evolution time. Time-domain analysis of this water signal allows identification of different solute components and provides a mechanism to separate out the rapidly decaying MTC components with short T2* values. Results FLEX imaging of paraCEST agents was possible in vitro in phantoms and in vivo in mouse kidneys and bladder. The results demonstrated that FLEX is capable of separating out the MTC signal from tissues in vivo while providing a quantitative exchange rate for the rapidly exchanging paraCEST water protons by fitting the FLEX time-domain signal to FLEX theory. Conclusions The first in vivo FLEX images of a paraCEST agent were acquired, which allowed separation out the tissue MTC components. These results show that FLEX imaging has potential for imaging the distribution of functional paraCEST agents in biological tissues. PMID:23468384

Lin, Chien-Yuan; Yadav, Nirbhay N.; Ratnakar, James; Sherry, A. Dean; van Zijl, Peter C. M.

2013-01-01

290

Irritant contact dermatitis from a black henna tattoo without sensitization to para-phenylendiamine.  

PubMed

Allergic contact dermatitis from nonpermanent black henna tattoos has been frequently reported, particularly in children. Contamination or adulteration of the dyes with para-phenylendiamine has been identified as major cause of active sensitization and elicitation of severe allergic contact dermatitis. Sequelae include permanent sensitization, hyper- or hypopigmentation, scarring, keloids, and hypertrichosis. We report a rare case of irritant dermatitis to an unknown ingredient in a black henna tattoo with consecutive hypopigmentation. Sensitization to para-phenylendiamine and other para-compounds was excluded by patch test evaluation. This is relevant for future exposure to consumer products such as hair dyes or in occupational settings. Generally, black henna tattoos, particularly if done with dyes of unknown composition, should be strongly discouraged. PMID:23690526

Kind, Fabiola; Hofmeier, Kathrin Scherer; Bircher, Andreas J

2013-06-01

291

Para-magneto- and electro-optic microcavities for blue wavelength modulation.  

PubMed

We report on microcavities comprising para-magnetic garnet and electro-optic films (MPMEO) for modulation of the polarization rotation angle of light at near-UV wavelengths with a slight intensity change, with applying a low voltage. The MPMEO are composed of para-magnetic garnet and electro-optic films sandwiched between two Bragg mirrors. The microcavity states in MPMEO are split and yield both the large rotation angle and high optical efficiency. Significant enhancement and modulation by applied voltages are verified through a conventional matrix calculation approach. High optical efficiency (>90%) and large modulation (~90 degree) of the polarization rotation are proved. PMID:24105511

Goto, Taichi; Isogai, Ryosuke; Inoue, M

2013-08-26

292

Rotational Spectroscopy of the CO-para-H2 Molecular Complex  

NASA Astrophysics Data System (ADS)

The rotational spectrum of the CO-para-H2 van der Waals complex, produced using a molecular jet expansion, was observed with two different techniques: OROTRON intracavity millimeter-wave spectroscopy and pulsed Fourier transform microwave spectroscopy. Thirteen transitions in the frequency range from 80 to 130 GHz and two transitions in the 14 GHz region were measured and assigned, allowing for a precise determination of the corresponding energy level positions of CO-para-H2. The data obtained enable further radio astronomical searches for this molecular complex and provide a sensitive test of the currently best available intermolecular potential energy surface for the CO-H2 system.

Potapov, A. V.; Surin, L. A.; Panfilov, V. A.; Dumesh, B. S.; Giesen, T. F.; Schlemmer, S.; Raston, P. L.; Jäger, W.

2009-10-01

293

One methylene too far: The solid state structure of the para-sulfonatomethylcalix[4]arene  

NASA Astrophysics Data System (ADS)

We report here, the first crystallographic structure of the new water soluble calixarene, para-sulfonatomethylcalix[4]arene. Anchoring a methylene group between the aromatic core of the calixarene and sulfonate groups extended the hydrophobic cavity but led to a more flexible macromolecule allowing formation of hydrogen bonds between vicinal sulfonate groups, causing the groups to point towards the cavity and effectively close it, with S ⋯ S distances of 9.7 Å × 7.9 Å. The packing motif consists of bilayers of para-sulfonatomethylcalix[4]arene along both the a and b axis.

Perret, Florent; Guéret, Stéphanie; Suwinska, Kinga; Coleman, Anthony W.

2007-03-01

294

Allergic contact dermatitis of the lip margins from para-tertiary-butylphenol in a lip liner.  

PubMed

We describe the use of gas chromatography with mass spectrometry (GC-MS) in the investigation of a case of allergic contact dermatitis of the lip margins caused by a lip liner. Patch testing identified sensitization to para-tertiary-butylphenol-formaldehyde resin (PTBP-FR), a resin glue frequently used in leather work but rarely found in cosmetics. Investigation specified the para-tertiary-butylphenol (PTBP) component of the resin as the hapten responsible for the allergic contact dermatitis, as well as for associated depigmentation. PMID:8462290

Angelini, E; Marinaro, C; Carrozzo, A M; Bianchi, L; Delogu, A; Giannello, G; Nini, G

1993-03-01

295

LIVROS DIDTICOS E SUAS FUNES PARA O PROFESSOR DE MATEMTICA NO BRASIL E NA FRANA.  

E-print Network

LIVROS DIDÁTICOS E SUAS FUN��ES PARA O PROFESSOR DE MATEMÁTICA NO BRASIL E NA FRAN�A. Clovis Gomes-Claude.Regnier@univ-lyon2.fr RESUMO Esse texto aborda as funções do livro didático de matemática em dois n que visa pôr em evidência o livro didático de matemática como «vetor de formação continuada» para os

Paris-Sud XI, Université de

296

MAT 2351 Calculo para Func~oes de Varias Variaveis I PROVA 2 (peso: 1.2)  

E-print Network

- y + z = 3, determine aquele para o qual a quantidade 2x2 + y2 + 2z2 seja m´inima. BOA PROVA!!! #12 - x + z = 3, determine aquele para o qual a quantidade x2 + 2y2 + 2z2 seja m´inima. BOA PROVA!!! #12 do plano x-y +z = 3, determine aquele para o qual a quantidade x2 + 2y2 + 2z2 seja m´inima. BOA PROVA

Piccione, Paolo

297

Biofumigação com Brassica rapa para o controle de Meloidogyne exigua em diferentes texturas e umidades do solo.  

E-print Network

??Os nematóides formadores de galhas radiculares, pertencentes ao gênero Meloidogyne Goeldi, 1887, constituem um dos grupos de fitonematóides mais importantes para as culturas agrícolas. Meloidogyne… (more)

Roseli dos Reis Goulart

2007-01-01

298

Estratégia de escalonamento de controladores PID baseado em regras Fuzzy para redes industriais foundation fieldbus usando blocos padrões.  

E-print Network

??Com o objetivo de se manter a padronização Foundation Fieldbus, neste trabalho são apresentados procedimentos para se implementar estratégias de controle inteligente, baseadas em escalonamento… (more)

Fábio Soares de Lima

2004-01-01

299

Estrategia de aula para alcanzar aprendizajes significativos y desarrollar habilidades de pensamiento científico en relación con la meiosis.  

E-print Network

??Villada Salazar, Claudia Patricia (2011) Estrategia de aula para alcanzar aprendizajes significativos y desarrollar habilidades de pensamiento científico en relación con la meiosis. Maestría thesis,… (more)

Villada Salazar, Claudia Patricia

2011-01-01

300

Se necesitan 50 000 fumadores y exfumadores para el Estudio Nacional de Exámenes de Pulmón (NLST)  

Cancer.gov

El Instituto Nacional del Cáncer (NCI) lanzó hoy un nuevo estudio para determinar si el examinar a las personas ya sea con una tomografía computarizada espiral o con una radiografía de pecho antes de que tengan síntomas puede reducir las muertes por cáncer de pulmón.

301

Estados Unidos y cuatro países de América Latina se unen para combatir el cáncer  

Cancer.gov

El Instituto Nacional del Cáncer (NCI) de Estados Unidos formalizó esta semana alianzas bilaterales con los gobiernos de Argentina, Brasil, México y Uruguay, para acelerar el avance contra el cáncer en la población hispana de Estados Unidos y de América Latina y mejorar la investigación del cáncer.

302

Significado de los cambios en el cuello uterino: Guía para la salud de la mujer  

Cancer.gov

Explica los pasos que deben seguirse después de un resultado anormal en una prueba de Pap o del VPH, así como las formas de diagnosticar y tratar las afecciones en el cuello uterino. También contiene información sobre las pautas para los exámenes de detección y las vacunas contra el VPH.

303

UN AUTMATA CELULAR PROBABILISTA (ACP) PARA LA SIMULACIN DE AUTOMVILES AUTOMATIZADOS  

E-print Network

UN AUT�MATA CELULAR PROBABILISTA (ACP) PARA LA SIMULACI�N DE AUTOM�VILES AUTOMATIZADOS Antonio delEdos. libresConfiguración inicial #12;#12;El comportamiento promedio ini=0.2 L=1000 ini=0.2 L=400 #12;1 0 10 0

Islas, León

304

ABORDAGEM MULTIOBJETIVO PARA OTIMIZAO DE REDES DE FILAS F. R. B. Cruz  

E-print Network

1 ABORDAGEM MULTIOBJETIVO PARA OTIMIZA��O DE REDES DE FILAS FINITAS F. R. B. Cruz Departamento de uma rede de filas finitas com serviço geral. Como tais objetivos são conflitantes, utiliza-se uma sistemas estocásticos. Palavras-Chaves: Redes de filas; algoritmos genéticos; otimização multiobjetivo

Cruz, Frederico

305

Submetido revista Pesquisa Naval Abordagem Multiobjetivo para Otimizao de Redes de Filas Finitas  

E-print Network

Submetido à revista Pesquisa Naval Abordagem Multiobjetivo para Otimização de Redes de Filas atendimento global de uma rede de filas finitas com serviço geral. Como tais objetivos são conflitantes of these important stochastic systems. Palavras-chave: Redes de filas. Algoritmos genéticos. Otimização multiobjetivo

Cruz, Frederico

306

ACADEMIA DE POLCIA CIVIL CONCURSO PBLICO PARA PROVIMENTO DE VAGAS E FORMAO DE CADASTRO DE RESERVA  

E-print Network

ACADEMIA DE POLÍCIA CIVIL CONCURSO P�BLICO PARA PROVIMENTO DE VAGAS E FORMA��O DE CADASTRO DE ACADEMIA DE POLÍCIA CIVIL DO DISTRITO FEDERAL (APCDF), no uso de suas atribuições legais, torna pública Diretor da Academia de Polícia Civil do Distrito Federal #12;

Maier, Rudolf Richard

307

The Acquisition of Lexical Meaning in a Study Abroad Context: The Spanish Prepositions "por" and "para."  

ERIC Educational Resources Information Center

Examination of the development of form/function relations of the prepositions "por" and "para" at different levels of proficiency in the interlanguage of study-abroad students in Granada, Spain, revealed "noncanonical" as well as "canonical" uses of these prepositions. The most common noncanonical uses were as substitutions for other prepositions…

Lafford, Barbara A.; Ryan, John M.

1995-01-01

308

Michael Faraday e o manuscrito Matter: uma solução metafísica para o problema da ação a distância  

Microsoft Academic Search

O texto aqui traduzido, intitulado simplesmente Matéria, revela um Faraday muito pouco conhecido. É notório que Michael Faraday (1791-1867) fez grandes contribuições para a ciência do eletromagnetismo; dentre elas, duas merecem destaque: a descoberta ex- perimental da indução eletromagnética e a elaboração teórica do conceito de linhas de força, alternativa à explicação (de perspectiva newtoniana) baseada na ação a distân-

Sonia Maria Dion

2006-01-01

309

UN MODELO EFICIENTE PARA LA FINANCIACIÓN PÚBLICA DE LA UNIVERSIDAD ESPAÑOLA  

Microsoft Academic Search

Resumen El presente trabajo realiza una aproximación al uso de los recursos públicos destinados a la financiación de las Instituciones de Educación Superior desde la perspectiva de la eficiencia financiera. Describe una propuesta de modelo para la determinación de las aportaciones públicas a percibir por las Universidades públicas españolas diferenciando dos tramos de financiación: el destinado a cubrir los gastos

LEONOR MORA AGUDO; JOSÉ ÁNGEL RIVERO MENÉNDEZ

2007-01-01

310

Chiral aryl iodide catalysts for the enantioselective synthesis of para-quinols.  

PubMed

Molecular modelling of an iodine(III) phenoxide was used as a starting point in the design of chiral aryl iodide catalysts for stereoselective oxidative dearomatization reactions. Using this approach, catalysts derived from 8-iodotetralone and tartaric acid were constructed and used to synthesize enantioenriched para-quinols from phenols. PMID:23463273

Volp, Kelly A; Harned, Andrew M

2013-04-14

311

Estructuras de comunicación para la resolución de problemas de manera distribuida en la ingeniería concurrente  

Microsoft Academic Search

Se presenta el problema de la comunicación en la resolución de problemas distribuidos. Se analizan las siguientes tecnologías de la comunicación: actores, pizarrones, las comunicaciones homogéneas y heterogéneas en un ambiente de multiagentes. Se ilustra la discusión con ejemplos del ambiente para el Diseño de Objetos Estructurados (Design of Structured Objects - DESO). El prototipo actual integra algunos sistemas preexistentes

Leonid B. Sheremetov

312

Desafíos y cambios, retos impostergables para la educación superior agrícola de la Universidad Rómulo Gallegos  

Microsoft Academic Search

Resumen: La educación superior latinoamericana y particularmente la educación superior agrícola venezolana, reflexionan en torno al para qué, al cómo, con quién y cuándo implementar los cambios que demanda la realidad del sector agrícola, planteados en los enunciados principistas de nuestra carta fundamental y sus leyes, por las demandas y desafíos que en el sector vienen planteando las instancias que

Dany Silvestre; Argenis Cedeño; Pedro Soler; Rafael Pérez; Wilmer Sánchez

313

1/5 CBEB 2008 NOVO MTODO PARA COMPRESSO DE SINAIS DE EMG USANDO  

E-print Network

1/5 CBEB 2008 NOVO MÃ?TODO PARA COMPRESSÃ?O DE SINAIS DE EMG USANDO JPEG2000 M. V. C. Costa*, P. A for compression of electromyographic (EMG) signals based on the JPEG2000 coding system. Originally designed for compression of still images, we show that JPEG2000 codec can also be used to compress EMG signals for both

Carvalho, João Luiz

314

Indicadores internacionales de Soberanía Alimentaria. Nuevas herramientas para una nueva agricultura  

Microsoft Academic Search

La crisis alimentaria del año 2008 situó en la agenda política, una vez más, uno de los retos globales más importantes que la humanidad debe afrontar: satisfacer el derecho a la alimentación de una manera sostenible. La Soberanía Alimentaria es un concepto, propuesto y desarrollado por numerosas organizaciones campesinas, que puede contribuir al objetivo planteado. No obstante para aumentar el

Miquel Ortega-Cerdà; Marta G. Rivera-Ferre

2010-01-01

315

Evaluación de los modelos de pronóstico aplicados para la demanda turística internacional hacia Colombia  

Microsoft Academic Search

En la actualidad, existen factores de orden financiero, cultural, social y medioambiental susceptibles de ser utilizados para explicar los flujos turísticos internacionales desde y hacia un país. (Coshall, 2000: 218). No obstante, se analizan algunos factores económicos que pueden afectar los viajes o estancias de las personas. A partir de 1970 hasta 1977, el sector turístico colombiano dependía en un

Dennys MarrugoTorrente

2009-01-01

316

TURISMO IDIOMÁTICO EN EL MEDIO RURAL: UNA PROPUESTA PARA SU DESARROLLO Y COMERCIALIZACIÓN  

Microsoft Academic Search

Miles de personas se desplazan a España cada año para sumergirse en su lengua y su cultura. Puesto que esta actividad utiliza los servicios propios del turismo tradicional es considerada un tipo de turismo denominado turismo de idiomas o turismo idiomático. En España existen destinos especializados fuertemente consolidados, frecuentemente urbanos y relacionados con universidades y zonas costeras. Los cambios en

Ana María Campón Cerro; José Manuel Hernández Mogollón

2011-01-01

317

Directrices básicas para la auditoría de sistemas de gestión de calidad en instituciones de educación superior  

Microsoft Academic Search

En las páginas siguientes, se presenta un marco de directrices básicas para la auditoría de sistemas de gestión de calidad a las instituciones de educación superior, en especial de sus programas de postgrado. En este trabajo se indaga, básicamente sobre, la conceptualización de la auditoría de sistemas y la particularización de las categorías de auditoría, además se aborda los principios

Manuel Vélez C; Paulo Vélez León

2008-01-01

318

PROCEDIMIENTO PARA LA ACREDITACIN DEL REQUISITO LINGSTICO EN LA UNIVERSIDAD DE INTRODUCCIN  

E-print Network

participar en Programas de Movilidad. 2. PROCEDIMIENTO DE ACREDITACI�N La normativa propia Instrucciones para solicitado traslado de expediente o la inscripción en un programa de movilidad. 2. Reconocimiento de haber, haber solicitado traslado de expediente o la inscripción en un programa de movilidad. Cuando se precise

Escolano, Francisco

319

SELECCIN DE ACACIAS PARA LA CONSTRUCCIN DE NIDOS DE AVES: UN BENEFICIO INDIRECTO DEL MUTULISMO  

E-print Network

SELECCI�N DE ACACIAS PARA LA CONSTRUCCI�N DE NIDOS DE AVES: UN BENEFICIO INDIRECTO DEL MUTULISMO caducifolio centroamericano, y comúnmente construyen sus nidos en acacias, principalmente en Acacia collinsii alimenta de las secreciones de los nectarios y los cuerpos de Belt de la de la acacia. Por su parte, la

Cuervo, Andrés

320

REDES TRANSACIONALES: APORTES PARA LA LECTURA SOBRE EL CASO AMERICANO DE LA ALIANZA SOCIAL CONTINENTAL  

E-print Network

REDES TRANSACIONALES: APORTES PARA LA LECTURA SOBRE EL CASO AMERICANO DE LA ALIANZA SOCIAL, específicamente en América Latina y el Caribe. Palabras Clave: Redes transnacionales - Movimientos sociales plural: la Alianza Social Continental (ASC). En el marco del regionalismo de segunda generación, el

Paris-Sud XI, Université de

321

REDES-Revista hispana para el anlisis de redes sociales Vol.6,#7, Junio 2009  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.6,#7, Junio 2009 http://revista-redes propone devolverle a la relación social su importancia como unidad básica de las redes sociales, y explorar lo que constituye su "sustancia" considerada aquí como el "motivo" de las relaciones. Las redes

Boyer, Edmond

322

REVISION DE MARCOS TEORICOS EDUCATIVOS PARA EL DISEÑO Y USO DE PROGRAMAS DIDÁCTICOS  

Microsoft Academic Search

RESUMEN Se desea presentar la aparición del software educativo y su evolución a la luz de algunas de las teorías educati- vas más representativas. En este paralelismo, sólo se mencionan aquellas teorías y\\/o autores que darán los marcos con- ceptuales para los desarrollos de los programas didácticos en función de las aplicaciones deseadas. Partiendo del con- ductismo skinneriano1, se pasa

Z. Cataldi; F. Lage; R. Pessacq; García Martínez

323

Effect of the site of infusion of para-aminohippuric acid (PAH) on portal blood flow  

E-print Network

Effect of the site of infusion of para-aminohippuric acid (PAH) on portal blood flow LM Zeoula C-308) suggested that mixing of PAH in portal blood could be improved by infusing PAH simultaneously via a ruminal of the PAH infusion site in different animals such that the infusion site effect may have been biased

Paris-Sud XI, Université de

324

INSTRUCCIONES DE ACTUACIN PARA LOS MIEMBROS DE LA DEFENSORA DE LOS DERECHOS UNIVERSITARIOS,  

E-print Network

INSTRUCCIONES DE ACTUACI�N PARA LOS MIEMBROS DE LA DEFENSORÍA DE LOS DERECHOS UNIVERSITARIOS, RELATIVAS A LA PRESERVACI�N Y OBSERVANCIA DE LOS DERECHOS Y OBLIGACIONES DE LOS UNIVERSITARIOS EN EL los Derechos Universitarios después de analizar dichos LINEAMIENTOS aprecia que los mismos son acordes

Arroyo Rodríguez, Víctor

325

Energia Renovable para Centros de Salud Rurales (Renewable Energy for Rural Health Clinics)  

SciTech Connect

Esta es la primera de una serie de guias de aplicaciones que el Programa de Energia de Villas de NREL esta comisionando para acoplar sistemas comerciales renovables con aplicaciones rurales, incluyendo agua, escuelas rurales y micro empresas. La guia esta complementada por las actividades de desarrollo del Programa de Energia de Villas de NREL, proyectos pilotos internacionales y programas de visitas profesionales.

Jimenez, T.; Olson, K.

1999-07-28

326

Physiological Relevance of Successive Hydroxylations of Toluene by Toluene para-Monooxygenase of Ralstonia pickettii  

E-print Network

-Monooxygenase of Ralstonia pickettii PKO1 AYELET FISHMAN, YING TAO and THOMAS K. WOOD* Departments of Chemical Engineering (TpMO) of Ralstonia pickettii PKO1 (encoded by tbuA1UBVA2C) performs successive hydroxylations para-monooxygenase (TpMO) of Ralstonia pickettii PKO1, formerly known as toluene 3-mono- oxygenase (T3

Wood, Thomas K.

327

Antimicrobial effect of para-alkoxyphenylcarbamic acid esters containing substituted N-phenylpiperazine moiety  

PubMed Central

In current research, nine basic esters of para-alkoxyphenylcarbamic acid with incorporated 4-(4-fluoro-/3-trifluoromethylphenyl)piperazin-1-yl fragment, 6i–6m and 8f–8i, were screened for their in vitro antimicrobial activity against Candida albicans, Staphylococcus aureus and Escherichia coli, respectively. Taking into account the minimum inhibitory concentration assay (MIC), as the most active against given yeast was evaluated 8i (MIC = 0.20 mg/mL), the most lipophilic structure containing para-butoxy and trifluoromethyl substituents. Investigating the efficiency of the compounds bearing only a single atom of fluorine and appropriate para-alkoxy side chain against Candida albicans, the cut-off effect was observed. From evaluated homological series, the maximum of the effectiveness was noticed for the stucture 6 k (MIC = 0.39 mg/mL), containing para-propoxy group attached to phenylcarbamoyloxy fragment, beyond which the compounds ceased to be active. On the contrary, all the tested molecules were against Staphylococcus aureus and Escherichia coli (MICs > 1.00 mg/mL) practically inactive. PMID:24294237

Malík, Ivan; Bukovský, Marián; Andriamainty, Fils; Gališinová, Jana

2013-01-01

328

REDE ISOBUS PARA CONTROLE E COMUNICAÇÃO DE DADOS DE UM ROBÔ AGRÍCOLA MÓVEL  

Microsoft Academic Search

RESUMO: Diante da grande necessidade de se projetar máquinas e implementos agrícolas cada vez mais automatizadas, uma forte tendência atual é o desenvolvimento de robôs móveis e veículos autônomos para área agrícola. Estes robôs e veículos, implementados com as mesmas tecnologias existentes em máquinas agrícolas, desempenham tarefas específicas com grande eficiência, originado ganhos de operação quando comparados a utilização de

EDUARDO PACIÊNCIA GODOY; GIOVANA TRIPOLONI TANGERINO; RAFAEL VIEIRA DE SOUSA; ARTHUR JOSÉ VIEIRA PORTO; RICARDO YASSUSHI INAMASU

329

Neuronas espejo, Teoría de la Mente y Corrupción. Neuropsicología para prevenir la corrupción  

Microsoft Academic Search

Este artículo es una propuesta para analizar ciertas conductas criminales usando las neuronas espejo y la Teoría de la Mente (ToM). El artículo muestra el rendimiento teórico y práctico de estos conceptos aplicados al análisis y prevención de la corrupción. Las neuronas espejo son áreas neuronales que se activan cuando se percibe que una persona sufre. Estas áreas permiten simular,

Eduardo Salcedo-Albarán; María-Margarita Zuleta; Mauricio Rubio; Isaac de León-Beltrán

2006-01-01

330

188 Oliveira et al. Quim. Nova SISTEMA DE INJEO EM FLUXO ESPECTROFOTOMTRICO PARA MONITORAR PERXIDO DE  

E-print Network

188 Oliveira et al. Quim. Nova SISTEMA DE INJE��O EM FLUXO ESPECTROFOTOM�TRICO PARA MONITORAR injection analysis; foto-Fenton. ArtigoQuim. Nova, Vol. 24, No. 2, 188-190, 2001. INTRODU��O A reação foto

Jardim, Wilson de Figueiredo

331

‘Madrinas’: snitching\\/para?policing and the illegal support of police work in Mexico  

Microsoft Academic Search

This paper analyzes the institutional role of informal para?police groups in Mexico known as ‘madrinas.’ The specific characteristics of ‘madrinas’ are that they are run as complex?structured networks with hierarchies, they actively participate in police activities, and they are an alternative way of gaining entry into the police institution. However, their key function is intelligence work within the police agency

Gustavo Fondevila

2011-01-01

332

USO DE AGENTES COMPUTACIONAIS NO DESENVOLVIMENTO DE FERRAMENTAS PARA GERENCIAMENTO DE CURSOS EM EDUCAÇÃO A DISTÂNCIA  

Microsoft Academic Search

Este trabalho apresenta a descrição do projeto de um conjunto de ferramentas que se aplica às tarefas de gerenciamento de materiais didáticos apresentados no ambiente WWW. A proposta deste trabalho está centrada no desenvolvimento de mecanismos para a interação entre as entidades aluno e professor com o curso disponibilizado através do ambiente WWW, utilizando-se da tecnologia de agentes de software.

ELAINE QUINTINO DA SILVA; JOÃO BENEDITO DOS SANTOS; HARRISSON FERREIRA GOMES; GEHARDT DA SILVA; HUDSON DE PÁDUA MELO; JAMERSON JARDEL NERE; LEANDRO ALVARENGA ANDRADE; RAMON BORGES LOPES

1999-01-01

333

Parallel algorithms for the DNA Fragment Assembly Problem Team ParaCore  

E-print Network

the complete DNA sequence of a living organism. Image from www.bristol.k12.ct.us #12;II. Shotgun sequencingParallel algorithms for the DNA Fragment Assembly Problem Team ParaCore ·Artur, Braga ·Igor Pelvain Science ­ Rochester Institute of Technology #12;Outline I. Overview: DNA as the support of genetic

Kaminsky, Alan

334

Revisado en Junio 2013 Recomendaciones para el Manejo de SWD en los Arndanos de Michigan  

E-print Network

Revisado en Junio 2013 Recomendaciones para el Manejo de SWD en los Arándanos de Michigan practices. USDAOAO Grant number 59250112019. La Drosófila de alas manchadas (SWD) es una plaga invasora de Unidos. En Michigan, la primera SWD fue encontrada después de la cosecha de arándanos en el 2010. En 2011

335

Diagrama Ti - V: una nueva propuesta de discriminación para magmas básicos en cinco ambientes tectónicos  

Microsoft Academic Search

RESUMEN Se presentan diagramas de discriminació n para magmas básicos (basaltos normativos en hiperstena, basaltos normativos en nefelina, y traquiandesita s basálticas normativas en nefelina), que tienen por objeto el distinguir entre cinco diferentes ambientes tectónicos: arco continental (AC); arco de isla (AI); rift (Rt); isla oceánica (IO) y basaltos de cresta mesoceánica (MOR); con base en los datos de

Manuel Vasconcelos-F; Surendra P. Verma; R. Carmen Vargas-B

336

Considerações sobre técnicas para a implementação de skeletal animation em Jogos 3D  

Microsoft Academic Search

Neste artigo examinamos uma tecnologia de animação conhecida como skeletal animation baseada na junção hierárquica das partes que formam o modelo a ser animado. Esta tecnologia pode ser aplicada a diversos domínios onde a animação de modelos é necessária, como a análise e simulação física de estruturas hierárquicas simples e animações artísticas de modelos e entretenimento (jogos de computador). Para

Márcio da Silva Camilo; Bernardo Nogueira; Soares Hodge; Rodrigo Pereira Martins; Alexandre Sztajnberg

337

Tempo de Converg^encia para o Equilibrio de Nash nos Jogos Empacotamento de Itens e  

E-print Network

Tempo de Converg^encia para o Equil´ibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento Empacotamento Ego´ista Simult^aneo Balanceamento de Carga Ass´incrono Conc Quest~oes Interessantes: · O jogo

Vignatti, André L.

338

Aplicacin del Ensayo Trmico mediante sensores de temperatura de fibra ptica (DTS) para el  

E-print Network

Aplicación del Ensayo Térmico mediante sensores de temperatura de fibra óptica (DTS) para el ­ Analogía con ensayo hidráulico Visual Transin #12;Instrumentación: Analogía con ensayo hidráulico DTS

Politècnica de Catalunya, Universitat

339

Linguateca: um Centro de Recursos Distribuído para o Processamento Computacional da Língua Portuguesa  

Microsoft Academic Search

Resumo. Neste artigo apresentamos uma panorâmica da actividade da Linguateca na criação e disponibilização de recursos e ferramentas para a língua portuguesa. Começamos por uma descrição dos objectivos e pressupostos da Linguateca e uma breve história da sua intervenção, e finalizamos com algumas considerações sobre a melhor forma de prosseguir na organização da área.

Diana Santos; Alberto Simões; Anabela Barreiro; Belinda Maia; Cristina Mota; Débora Oliveira; Eckhard Bick; Elisabete Ranchhod; José João Dias de Almeida; Luís Cabral; Luís Costa; Luís Sarmento; Marcirio Chaves; Nuno Cardoso; Paulo Rocha; Rachel Aires; Rosário Silva; Rui Vilela; Susana Afonso

2004-01-01

340

Intact cluster and chordate-like expression of ParaHox genes in a sea star  

PubMed Central

Background The ParaHox genes are thought to be major players in patterning the gut of several bilaterian taxa. Though this is a fundamental role that these transcription factors play, their activities are not limited to the endoderm and extend to both ectodermal and mesodermal tissues. Three genes compose the ParaHox group: Gsx, Xlox and Cdx. In some taxa (mostly chordates but to some degree also in protostomes) the three genes are arranged into a genomic cluster, in a similar fashion to what has been shown for the better-known Hox genes. Sea urchins possess the full complement of ParaHox genes but they are all dispersed throughout the genome, an arrangement that, perhaps, represented the primitive condition for all echinoderms. In order to understand the evolutionary history of this group of genes we cloned and characterized all ParaHox genes, studied their expression patterns and identified their genomic loci in a member of an earlier branching group of echinoderms, the asteroid Patiria miniata. Results We identified the three ParaHox orthologs in the genome of P. miniata. While one of them, PmGsx is provided as maternal message, with no zygotic activation afterwards, the other two, PmLox and PmCdx are expressed during embryogenesis, within restricted domains of both endoderm and ectoderm. Screening of a Patiria bacterial artificial chromosome (BAC) library led to the identification of a clone containing the three genes. The transcriptional directions of PmGsx and PmLox are opposed to that of the PmCdx gene within the cluster. Conclusions The identification of P. miniata ParaHox genes has revealed the fact that these genes are clustered in the genome, in contrast to what has been reported for echinoids. Since the presence of an intact cluster, or at least a partial cluster, has been reported in chordates and polychaetes respectively, it becomes clear that within echinoderms, sea urchins have modified the original bilaterian arrangement. Moreover, the sea star ParaHox domains of expression show chordate-like features not found in the sea urchin, confirming that the dynamics of gene expression for the respective genes and their putative regulatory interactions have clearly changed over evolutionary time within the echinoid lineage. PMID:23803323

2013-01-01

341

Action mechanism of tyrosinase on meta- and para-hydroxylated monophenols.  

PubMed

The relationship between the structure and activity of meta- and para-hydroxylated monophenols was studied during their tyrosinase-catalysed hydroxylation and the rate-limiting steps of the reaction mechanism were identified. The para-hydroxylated substrates permit us to study the effect of a substituent (R) in the carbon-1 position (C-1) of the benzene ring on the nucleophilic attack step, while the meta group permits a similar study of the effect on the electrophilic attack step. Substrates with a -OCH3 group on C-1, as p-hydroxyanisol (4HA) and m-hydroxyanisol (3HA), or with a -CH2OH group, as p-hydroxybenzylalcohol (4HBA) and m-hydroxybenzylalcohol (3HBA), were used because the effect of the substituent (R) size was assumed to be similar. However, the electron-donating effect of the -OCH3 group means that the carbon-4 position (C-4) is favoured for nucleophilic attack (para-hydroxylated substrates) or for electrophilic attack (meta-hydroxylated substrates). The electron-attracting effect of the -CH2OH group has the opposite effect, hindering nucleophilic (para) or electrophilic (meta) attack of C-4. The experimental data point to differences between the maximum steady-state rate (V(M)Max) of the different substrates, the value of this parameter depends on the nucleophilic and electrophilic attack. However, differences are greatest in the Michaelis constants (K(M)m), with the meta-hydroxylated substrates having very large values. The catalytic efficiency k(M)cat/K(M)m is much greater for thepara-hydroxylated substrates although it varies greatly between one substrate and the other. However, it varies much less in the meta-hydroxylated substrates since this parameter describes the power of the nucleophilic attack, which is weaker in the meta OH. The large increase in the K(M)m of the meta-hydroxylated substrates might suggest that the phenolic OH takes part in substrate binding. Since this is a weaker nucleophil than the para-hydroxylated substrates, the binding constant decreases, leading to an increase in K(M)m. The catalytic efficiency of tyrosinase on a monophenol (para or meta) is directly related to the nucleophilic power of the oxygen of the phenolic OH. The oxidation step is not limiting since if this were the case, the para and meta substrates would have the same V(M)max. The small difference between the absolute values of V(M)max suggests that the rate constants of the nucleophilic and electrophilic attacks are on the same order of magnitude. PMID:10839460

Fenoll, L G; Rodríguez-López, J N; Varón, R; García-Ruiz, P A; García-Cánovas, F; Tudela, J

2000-04-01

342

Ancient origins of axial patterning genes: Hox genes and ParaHox genes in the Cnidaria.  

PubMed

Among the bilaterally symmetrical, triploblastic animals (the Bilateria), a conserved set of developmental regulatory genes are known to function in patterning the anterior-posterior (AP) axis. This set includes the well-studied Hox cluster genes, and the recently described genes of the ParaHox cluster, which is believed to be the evolutionary sister of the Hox cluster (Brooke et al. 1998). The conserved role of these axial patterning genes in animals as diverse as frogs and flies is believed to reflect an underlying homology (i.e., all bilaterians derive from a common ancestor which possessed an AP axis and the developmental mechanisms responsible for patterning the axis). However, the origin and early evolution of Hox genes and ParaHox genes remain obscure. Repeated attempts have been made to reconstruct the early evolution of Hox genes by analyzing data from the triphoblastic animals, the Bilateria (Schubert et al. 1993; Zhang and Nei 1996). A more precise dating of Hox origins has been elusive due to a lack of sufficient information from outgroup taxa such as the phylum Cnidaria (corals, hydras, jellyfishes, and sea anemones). In combination with outgroup taxa, another potential source of information about Hox origins is outgroup genes (e.g., the genes of the ParaHox cluster). In this article, we present cDNA sequences of two Hox-like genes (anthox2 and anthox6) from the sea anemone, Nematostella vectensis. Phylogenetic analysis indicates that anthox2 (= Cnox2) is homologous to the GSX class of ParaHox genes, and anthox6 is homologous to the anterior class of Hox genes. Therefore, the origin of Hox genes and ParaHox genes occurred prior to the evolutionary split between the Cnidaria and the Bilateria and predated the evolution of the anterior-posterior axis of bilaterian animals. Our analysis also suggests that the central Hox class was invented in the bilaterian lineage, subsequent to their split from the Cnidaria. PMID:11324016

Finnerty, J R; Martindale, M Q

1999-01-01

343

Comienza la construcción de instalación patrocinada por el NCI en Puerto Rico para realizar estudios clínicos sobre el cáncer  

Cancer.gov

El gobierno de Puerto Rico ha destinado $196 millones de dólares para construir un hospital oncológico de 287 000 pies cuadrados en San Juan, que contará con 96 camas. El nuevo hospital es el primero en su clase en la región caribeña y en él se llevarán a cabo tratamientos para el cáncer y estudios clínicos.

344

EVALUATION OF PARA-DICHLOROBENZENE EMISSIONS FROM SOLID MOTH REPELLANT AS A SOURCE OF INDOOR AIR POLLUTION  

EPA Science Inventory

The paper reports results of dynamic and static chamber tests to evaluate para-dichlorobenzene emission rates from mothcakes. he data were analyzed by a model that assumes that the para-dichlorobenzene emission from mothcakes is a temperature-sensitive sublimation process. ull-sc...

345

EVALUATION OF PARA-DICHLOROBENZENE EMISSIONS FROM SOLID MOTH REPELLANT AS A SOURCE OF INDOOR AIR POLLUTION  

EPA Science Inventory

Mothcakes made of para-dichlorobenzene have been widely available for the general population to be used as a moth repellant to protect garments from insect damage. Usually, a mothcake is expected to last for weeks or even months during which the para-dichlorobenzene emits slowly ...

346

BUSCA LOCAL PARA POS-PROCESSAMENTO EM RESULTADOS DE OTIMIZAC~AO MULTI-OBJETIVO EM REDES DE FILAS  

E-print Network

BUSCA LOCAL PARA P´OS-PROCESSAMENTO EM RESULTADOS DE OTIMIZA¸C~AO MULTI-OBJETIVO EM REDES DE FILAS otimiza¸c~ao de redes de filas finitas, a capacidade total do sistema em ´areas de espera deve ser a menor algoritmo simulated annealing foi desenvolvido, especialmente para redes de filas finitas, produzindo solu

Cruz, Frederico

347

Para-social work to address most vulnerable children in sub-Sahara Africa: A case example in Tanzania  

Microsoft Academic Search

Addressing the needs of the most vulnerable children is a universal challenge, particularly in developing countries lacking infrastructure of social welfare services, adequately trained workforce and educational programs. This article describes training and utilization of para-social workers to the social service needs of children and families. These supervised para-professional community based staff and volunteers can fill gaps in serving the

Nathan Linsk; Zena Mabeyo; Leah Omari; Donna Petras; Bonnie Lubin; Abebe Assefa Abate; Lucy Steinitz; Theresa Kaijage; Sally Mason

2010-01-01

348

Bacillus subtilis Soj (ParA): The involvement of DNA binding and dynamic localization in plasmid partitioning  

E-print Network

The ParA family of ATPases encompasses proteins with a wide variety of functions. The prototype of this family is the ParA ATPase from the P1 prophage plasmid, which, along with ParB and the parS binding site, is required for the faithful...

Hester, Christina Marie

2008-05-08

349

DISEÑO DE UNA ESTRATEGIA PROMOCIONAL PARA UN NUEVO SEGMENTO DE MERCADO: PROGRAMA MBA-FULL TIME, EGADE-MONTERREY  

Microsoft Academic Search

En el presente trabajo se muestra la problemática que enfrenta la Escuela de Graduados en Administración y Dirección de Empresas (EGADE) del Tecnológico de Monterrey, Campus Monterrey, en cuanto a la captación de matrícula para su programa de MBA-Full Time, que es el pilar fundamental de esta importante escuela de negocios; para ello se identificó un importante segmento de mercado

Héctor Cuevas Vargas; Rudy Fernández Escobedo; Leticia Almanza Serrano

2010-01-01

350

ERASMUS -Movilidad de Personal para Formacin (STT) El objetivo de este programa es que el PAS de una universidad pueda  

E-print Network

PAS ERASMUS - Movilidad de Personal para Formación (STT) El objetivo de este programa es que el PAS publicación de la resolución de concesión. 2. Convenio de subvención de movilidad . (Por duplicado) 3. Acuerdo de movilidad firmado por ambas instituciones. La persona responsable para la firma del Plan de

Escolano, Francisco

351

Convocatoria LLP-Erasmus 2012-13 Convocatoria de movilidad para la formacin del personal de administracin y  

E-print Network

Convocatoria LLP-Erasmus 2012-13 Convocatoria de movilidad para la formación del personal de promoción de la movilidad de estudiantes, de profesorado y de personal de administración y servicios. La una convocatoria de 20 ayudas para fomentar la movilidad con fines de formación del Personal de

Escolano, Francisco

352

ERASMUS STAFF INTERNATIONAL WEEKS 13-14 A modo divulgativo anunciamos diferentes International Weeks para solicitar una movilidad  

E-print Network

Weeks para solicitar una movilidad Erasmus PDI + PAS para impartir docencia o recibir formación solicitud: 15 de marzo de 2014 Información Contacto: staff.week@uni-kassel.de FRANCIA (MOVILIDAD PROFESORES.study-in-champagne.com ALEMANIA (MOVILIDAD PROFESORES) Westfälische Hochschule Del 5 al 8 de Mayo de 2014 Invitación Programa

Rey Juan Carlos, Universidad

353

Zoneamento agrícola e época de semeadura para trigo no Brasil Agricultural zoning and sowing dates for wheat in Brazil  

Microsoft Academic Search

Resumo - Um Programa de Zoneamento Agrícola para o Brasil, subsidiando a política de crédito e securidade rural, começou a ser posto em prática pelo Ministério da Agricultura, Pecuária e Abastecimento (MAPA) a partir da safra de inverno de 1996, com a cultura de trigo no sul do Brasil. Este artigo apresenta uma síntese dos trabalhos sobre zoneamento agrícola para

Gilberto Rocca da Cunha; João Carlos Haas; Jaime Ricardo; Tavares Maluf; Paulo Henrique Caramori; Eduardo Delgado Assad; Hugo José Braga; Jurandir Zullo Jr; Cláudio Lazzarotto; Sérgio Gonçalves; Marcos Wrege; Dionísio Brunetta; Sérgio Roberto Dotto; Hilton Silveira Pinto; Orivaldo Brunini; Vera Magali; Radtke Thomé; Sérgio Luiz Zampieri; Aldemir Pasinato; Márcia Barrocas Moreira Pimentel; Cristina Pandolfo

2001-01-01

354

Saturn’s Tropospheric Temperatures and Para-Hydrogen Distribution from Ten Years of Cassini Observations  

NASA Astrophysics Data System (ADS)

Cassini/CIRS observations of Saturn’s 10-1400 cm-1 spectrum have been inverted to construct a global record of tropospheric temperature and para-hydrogen variability over the ten-year span of the Cassini mission. The data record the slow reversal of seasonal asymmetries in tropospheric conditions from northern winter (2004, Ls=293), through northern spring equinox (2009, Ls=0) to the present day (2014, Ls=60). Mid-latitude tropospheric temperatures have cooled by approximately 4-6 K in the south and warmed by 2-4 K in the north, with the seasonal contrast decreasing with depth. CIRS detected the north polar minimum 100-mbar temperatures 6-8 years after winter solstice, whereas the south polar maximum occurred 1-2 years after summer solstice, consistent with the lag times predicted by radiative equilibrium models. Warm polar cyclones and the northern hexagon persist throughout the mission, suggesting that they are permanent features of Saturn’s tropospheric circulation. The 200-mbar thermal enhancement (“knee”) that was strongest in the summer but weak or absent in winter in 2004-2006 (Fletcher et al., 2007, Icarus 189, p.457-478) has now shifted northward and is present globally in 2014, suggestive of radiative heating in Saturn’s tropospheric haze layer. Saturn’s para-H2 fraction, which serves as a tracer of both tropospheric mixing and the efficiency of re-equilibration between the ortho- and para-hydrogen states, is slowly altering: super-equilibrium conditions (para-H2 fraction exceeding equilibrium expectations and suggestive of subsiding airmasses) that dominated the southern summer hemisphere are now weakening, whereas the sub-equilibrium conditions (suggestive of uplift) of the northern winter are being replaced by equilibrium or super-equilibrium conditions in spring. The thermal ‘knee’ and the para-H2 distribution are tracking both the increased spring illumination and the increasing tropospheric haze opacity of the springtime hemisphere observed via colour changes in visible light, suggesting a close connection between the tropospheric temperatures, para-H2 and haze characteristics.

Fletcher, Leigh N.; Irwin, Patrick G.; Sinclair, James; Giles, Rohini; Barstow, Joanna; Achterberg, Richard K.; Orton, Glenn S.

2014-11-01

355

H2CS abundances and ortho-to-para ratios in interstellar clouds  

NASA Technical Reports Server (NTRS)

Several H2CS ortho and para transitions have been observed toward interstellar molecular clouds, including cold, dark clouds and star-forming regions. H2CS fractional abundances f(H2CS) about 1-2 10 to the -9th relative to molecular hydrogen toward TMC-1, Orion A, and NGC 7538, and about 5 10 to the -10th for L134N are derived. The H2CS ortho-to-para ratios in TMC-1 are about 1.8 toward the cyanopolyyne peak and the ammonia peak, which may indicate the thermalization of H2CS on 10 K grains. A ratio of about 3, the statistical value, for Orion (3N, 1E) and NGC 7538 is derived, while a value of about 2 for Orion (KL) is found.

Minh, Y. C.; Irvine, W. M.; Brewer, M. K.

1991-01-01

356

EL PROGRAMA CITI: UNA ALTERNATIVA PARA LA CAPACITACIÓN EN ÉTICA DE LA INVESTIGACIÓN EN AMÉRICA LATINA  

PubMed Central

El Programa CITI (Collaborative Institutional Training Initiative) es un curso basado en Internet y desarrollado por voluntarios, que brinda material educacional sobre protección de sujetos humanos en investigaciones biomédicas y de conducta, buenas prácticas clínicas, conducta responsable de la investigación y trato humanitario a animales de laboratorio. Es un esfuerzo conjunto del Fred Hutchinson Cancer Research Center y la Universidad de Miami. Con la colaboración de expertos locales, gran parte del contenido se ha adaptado para América Latina, se ha traducido al español y portugués y se han establecido acuerdos de colaboración con instituciones especializadas en bioética en Chile, Brasil, Costa Rica y Perú. Los autores presentan una metodología accesible para la capacitación en ética de la investigación y una justificación de su uso y difusión en América Latina PMID:21687817

Litewka, Sergio; Goodman, Kenneth; Braunschweiger, y Paul

2011-01-01

357

Modelizacion, control e implementacion de un procesador energetico paralelo para aplicacion en sistemas multisalida  

NASA Astrophysics Data System (ADS)

Cualquier sistema electronico que incluya un procesado o tratamiento de la senal, y ademas, algun tipo de actuador mecanico generalmente necesita, como minimo, dos tensiones diferentes de alimentacion. Excluyendo los sistemas de alimentacion distribuida, la solucion tecnica mas utilizada para proporcionar dos o mas tensiones consiste en las fuentes de alimentacion multisalida. En una fuente de alimentacion multisalida los diferentes circuitos que conforman cada salida comparten un mismo transformador de potencia optimizando coste, masa, y volumen. Las ventajas obtenidas con este procedimiento tienen en su contra el efecto que sobre cada salida individual provocan las demas en su conjunto debido, principalmente, a los efectos de los elementos parasitos de los componentes. Un cambio de carga en una de las salidas produce un transitorio que es visto por todas las demas como un efecto de impedancia cruzada, y al final del transitorio, la tension de cada salida es diferente respecto a la que tenian antes del transitorio. Este ultimo resultado se conoce como regulacion cruzada. La disminucion de los efectos de la regulacion cruzada ha sido objeto de estudio durante los ultimos anos. El objetivo ha sido el desarrollo de distintas estrategias que permiten, desde disminuir los efectos de la regulacion cruzada hasta los niveles deseables, a eliminarla completamente. El resultado final suele suponer una penalizacion sobre el diseno del sistema directamente proporcional al grado de regulacion a conseguir en las distintas salidas. Entre las soluciones propuestas para eliminar la regulacion cruzada las tecnicas de post-regulacion se han consolidado como la opcion mas aceptada ya que, pueden aplicarse a cualquier convertidor y no suponen ninguna complejidad adicional a la hora de plantear el diseno. En esta Tesis Doctoral se abordara el estudio de la tecnica conocida como postregulacion mediante transformador controlado, que si bien se ha empleado en convertidores resonantes, su modelizacion, y aplicacion en convertidores PWM, esta aun por estudiar y valorar. El primer Capitulo consiste en una breve introduccion al problema de la regulacion cruzada y la impedancia cruzada para posteriormente describir las tecnicas de post-regulacion actualmente mas empleadas, con especial atencion al post-regulador con transformador controlado. El Capitulo segundo trata del estudio de las caracteristicas estaticas del postregulador con transformador controlado. Partiendo de los estudios disponibles sobre el postregulador se plantean mejoras en su modo de actuacion y se discuten tres alternativas diferentes para controlar el transformador. Las dos primeras consisten en emplear un convertidor auxiliar Boost en sus dos modos de funcionamiento, continuo y discontinuo. La tercera consiste en controlar el transformador con una tension PWM directamente, sin filtrado. Finalmente se comprueba experimentalmente, para el estado estacionario, el funcionamiento del post-regulador para cada uno de los tres metodos de control. El Capitulo tercero trata de la dinamica de la salida controlada con el post-regulador cuando este emplea un convertidor auxiliar tipo Boost. Mediante la tecnica de promediado de variables de estado se propone el modelo de pequena senal, tanto para el modo continuo como para el modo discontinuo de funcionamiento del convertidor auxiliar. Los resultados mas significativos de esta seccion son las expresiones analiticas de las impedancias cruzadas y de la impedancia de la salida post-regulada. Como complemento al modelo de pequena senal se plantea un modelo de gran senal implementado sobre el simulador Pspice. Con este nuevo modelo se reproducen los resultados obtenidos con el modelo de pequena senal y ademas es posible simular los transitorios en las tensiones de salida ante cambios de carga. La modelizacion del convertidor cuando el transformador se controla con una tension PWM sin filtrar es el objetivo del Capitulo 4. En las secciones siguientes del Capitulo se plantea el correspondiente modelo de gran senal aplicado a un nuevo prototipo exper

Ferreres Sabater, Agustin

358

A nanoparticle catalyst for heterogeneous phase para-hydrogen-induced polarization in water.  

PubMed

Para-hydrogen-induced polarization (PHIP) is a technique capable of producing spin polarization at a magnitude far greater than state-of-the-art magnets. A significant application of PHIP is to generate contrast agents for biomedical imaging. Clinically viable and effective contrast agents not only require high levels of polarization but heterogeneous catalysts that can be used in water to eliminate the toxicity impact. Herein, we demonstrate the use of Pt?nanoparticles capped with glutathione to induce heterogeneous PHIP in water. The ligand-inhibited surface diffusion on the nanoparticles resulted in a (1) H?polarization of P=0.25?% for hydroxyethyl propionate, a known contrast agent for magnetic resonance angiography. Transferring the (1) H?polarization to a (13) C?nucleus using a para-hydrogen polarizer yielded a polarization of 0.013?%. The nuclear-spin polarizations achieved in these experiments are the first reported to date involving heterogeneous reactions in water. PMID:25565403

Glöggler, Stefan; Grunfeld, Alexander M; Ertas, Yavuz N; McCormick, Jeffrey; Wagner, Shawn; Schleker, P Philipp M; Bouchard, Louis-S

2015-02-16

359

UNESP, para obtenção do título de Mestre no Programa de Pós Graduação  

E-print Network

Bendito seja o Senhor, minha rocha, que adestra as minhas mãos para a peleja e os meus dedos para a guerra; Aquele que habita no esconderijo do Altíssimo, à sombra do Onipotente descansará. Direi do Senhor: Ele é o meu Deus, o meu refúgio, a minha fortaleza, e nele confiarei. Porque ele te livrará do laço do passarinheiro, e da peste perniciosa. Ele te cobrirá com as suas penas, e debaixo das suas asas estarás seguros; a sua verdade será o teu escudo e broquel. Não terás medo do terror de noite nem da seta que voa de dia, Nem da peste que anda na escuridão, nem da mortandade que assola ao meio-dia. Mil cairão ao teu lado, e dez mil à tua direita, mas tú não serás atingido. O Senhor é a minha luz e a minha salvação; a quem temerei? O Senhor é a força da minha vida; de quem me recearei?

De Biociências; Campus De Botucatu; Processo De; Carcinogênese De; Esôfago Em; Ratos Wistar; Juliana Ferreira Da Silva; Em Biologia Geral E Aplicada; Botucatu Sp; Juliana Ferreira Da Silva; Processo De; Carcinogênese De; Esôfago Em; Ratos Wistar; Câmpus De Botucatu; Em Biologia Geral E Aplicada; Orientador Prof; Dr. Luís Fern; O Barbisan; Prof Dr; Luís Fernando Barbisan; Profa Dra; Lígia Souza; Lima Silveira; Mota Dedicatória

360

Desarrollo de un receptor polarimétrico en banda S para aplicación en estudios radioastronómicos  

NASA Astrophysics Data System (ADS)

Desde el punto de vista tecnológico, el objetivo principal de este proyecto es desarrollar un cabezal de receptor en la frecuencia de 3.3 GHz, con una temperatura del sistema de 60 K y un ancho de banda de 140 MHz. El mismo será instalado en el foco primario de un reflector parabólico de 30 metros de diámetro que funcionará como radiómetro en el IAR. El receptor es del tipo polarimétrico, con lo cual permite la posibilidad de obtener las componentes de polarización lineal y circular. Para tal fin el cabezal constará de dos ramas receptoras que amplificarán la señal y la trasladarán a una frecuencia menor, (frecuencia intermedia), permitiendo de esa forma un mejor transporte de la señal a la sala de control para su posterior procesamiento. El receptor, además de tener características polarimétricas, podrá ser usado en el contínuo y en la línea, utilizando las ventajas observacionales y de procesamiento de señal que actualmente posee el IAR.

Barberis, C. M.; Bava, J. A.; Sanz, A. J.

361

Incentivos para atraer y retener personal de salud de zonas rurales del Perú: un estudio cualitativo  

PubMed Central

El objetivo fue identificar incentivos de atracción y retención en zonas rurales y distantes de Ayacucho, Perú. Fueron realizadas entrevistas en profundidad con 80 médicos, enfermeras, obstetras y técnicos (20 por grupo) de las zonas más pobres y con 11 funcionarios. No existen políticas sistemáticas de atracción y retención de personal de salud en Ayacucho. Los principales incentivos, en orden de importancia, fueron mejoras salariales, oportunidades de formación y capacitación, estabilidad laboral y nombramiento, mejoras en infraestructura y equipos, e incremento del personal. Se mencionaron también mejoras en la vivienda y alimentación, mayor cercanía con la familia y reconocimiento por el sistema de salud. Existen coincidencias y singularidades entre los distintos grupos sobre los incentivos clave para estimular el trabajo rural, que deben considerarse al diseñar políticas públicas. Las iniciativas del Estado deben comprender procesos rigurosos de monitoreo y evaluación, para asegurar que las mismas tengan el impacto deseado. PMID:22488318

Huicho, Luis; Canseco, Francisco Díez; Lema, Claudia; Miranda, J. Jaime; Lescano, Andrés G.

2014-01-01

362

Repeated Topical Application of para-Phenylenediamine Induces Renal Histopathological Changes in Rats  

PubMed Central

Hemolytic anemia and rhabdomyolysis have been often reported to be an adverse effect of drug- and chemical-induced toxicity both in experimental and real-life scenario. para-Phenylenediamine (PPD) is a derivative of para-nitroaniline and has been found as an ingredient of almost all hair dye formulations in varying concentrations from 2% to 4% w/v. Earlier studies have reported that the accidental oral ingestion of PPD in humans can lead to acute renal failure because of rhabdomyolysis. In the present investigation, we have tested the chronic topical application of PPD and its effect on the renal histology of Sprague-Dawley rats. The experiment provides clear evidence that topically applied PPD induces hemolytic anemia as evident from the decrease in the total RBC count, packed cell volume, and hemoglobin content apart from rhabdomyolysis which subsequently causes acute renal failure in rats. PMID:22778510

Bharali, Manuj Kr.; Basumatary, Rajeev; Rahman, Taibur; Dutta, Karabi

2012-01-01

363

Development of an integrated remote monitoring technique and its application to para-stressing bridge system  

NASA Astrophysics Data System (ADS)

Bridge monitoring system via information technology is capable of providing more accurate knowledge of bridge performance characteristics than traditional strategies. This paper describes not only an integrated Internet monitoring system that consists of a stand-alone monitoring system (SMS) and a Web-based Internet monitoring system (IMS) for bridge maintenance but also its application to para-stressing bridge system as an intelligent structure. IMS, as a Web-based system, is capable of addressing the remote monitoring by introducing measuring information derived from SMS into the system through Internet or intranet connected by either PHS or LAN. Moreover, the key functions of IMS such as data management system, condition assessment, and decision making with the proposed system are also introduced in this paper. Another goal of this study is to establish the framework of a para-stressing bridge system which is an intelligent bridge by integrating the bridge monitoring information into the system to control the bridge performance automatically.

Miyamoto, Ayaho; Motoshita, Minoru; Casas, Joan R.

2013-12-01

364

Optical properties of two-electron quantum dots in low lying para- and ortho-states  

NASA Astrophysics Data System (ADS)

Two low lying energy levels of 3D two-electron quantum dot with rigid confinement (the wave functions vanish at the surface of the quantum dot) are obtained by the variational and perturbation methods. There are two kind of quantum dots: para- and ortho-dots with antiparallel and parallel electron spins, respectively. An ensemble of the two-electron quantum dots contains para-dots in the ground state and ortho-dots in the lowest metastable state at low enough temperatures. The optical parameters of GaAs two-electron quantum dot are calculated with the help of obtained energy levels and compared with the optical parameters known for the one electron GaAs quantum dot. The Coulomb interaction between electrons is responsible for the blue shift of maxima of the absorption coefficient and refractive index of two-electron quantum dots.

Mengesha, Menberu; Mal'nev, Vadim

2012-07-01

365

Chirality driven crystallization behavior of ortho, meta, and para-cyanophenyl glycerol ethers  

NASA Astrophysics Data System (ADS)

Enantiopure and racemic samples of ortho, meta, and para CN-substituted phenyl glycerol ethers 1- 3 were investigated by differential scanning calorimetry and single-crystal X-ray analysis. The absolute configuration for ( S)- 1 was established through Flack parameter method. Whereas ortho-derivative 1 demonstrates spontaneous resolution upon crystallization, homochiral lattice for scalemic meta-derivative 2 is exceeded in stability by heterochiral lattice of racemic compound. This tendency becomes all the more evident for the para-derivative 3, in which case the difference in Gibbs free energy between rac and scal lattices amounts ? G0 = -4.48 kJ mol -1. Most of these phenomena could be understood by reference to crystal packing details.

Bredikhin, Alexander A.; Litvinov, Igor A.; Krivolapov, Dmitry B.; Fattahov, Bulat R.; Gubaidullin, Aidar T.; Akhatova, Flyura S.; Bredikhina, Zemfira A.

2010-09-01

366

Sasaki-Einstein and paraSasaki-Einstein metrics from (?,?)-structures  

NASA Astrophysics Data System (ADS)

We prove that every contact metric (?,?)-space admits a canonical ?-Einstein Sasakian or ?-Einstein paraSasakian metric. An explicit expression for the curvature tensor fields of those metrics is given and we find the values of ? and ? for which such metrics are Sasaki-Einstein and paraSasaki-Einstein. Conversely, we prove that, under some natural assumptions, a K-contact or K-paracontact manifold foliated by two mutually orthogonal, totally geodesic Legendre foliations admits a contact metric (?,?)-structure. Furthermore, we apply the above results to the geometry of tangent sphere bundles and we discuss some geometric properties of (?,?)-spaces related to the existence of Einstein-Weyl and Lorentzian-Sasaki-Einstein structures.

Cappelletti-Montano, Beniamino; Carriazo, Alfonso; Martín-Molina, Verónica

2013-11-01

367

Photoconduction in thin films of a ladder-type poly-para-phenylene  

Microsoft Academic Search

Stationary photoconductivity has been measured on typically 100 nm thick films of a methyl-substituted ladder-type poly-para-phenylene sandwiched between indium–tin oxide (ITO) and aluminium (Al) electrodes. Three contributions to photocarrier production have been identified: (1) hole injection from the ITO and the Al-anode via dissociation of singlet excitons; (2) intrinsic carrier production via relaxed S1 excitons; and (3) intrinsic photogeneration via

S. Barth; H. Bässler; U. Scherf; K. Müllen

1998-01-01

368

Structure, morphology, and optical properties of highly ordered films of para-sexiphenyl  

Microsoft Academic Search

We have investigated the properties of highly textured films of para-sexiphenyl (6P). The films are obtained by evaporation in high vacuum with different deposition rates and substrate temperatures. The crystal structure is analyzed by x-ray and elastic electron diffraction. Depending on the evaporation conditions and on the substrate pretreatment we find a marked texturing of the films. To better understand

E. Zojer; N. Koch; P. Puschnig; F. Meghdadi; A. Niko; R. Resel; C. Ambrosch-Draxl; M. Knupfer; J. Fink; J. L. Brédas; G. Leising

2000-01-01

369

Extensão do WEKA para Métodos de Agrupamento com Restrição de Contigüidade  

Microsoft Academic Search

This work addresses the shortage of open-source data mining tools that implement spatial data mining methods. Therefore, this work presents the development of a WEKA extension for contiguity-constrained clustering method. Resumo. Este trabalho aponta a pouca disponibilidade de ferramentas de mineração de dados de código-aberto que implementam métodos de mineração de dados espaciais. Portanto, o objetivo deste trabalho, para tentar

Carlos Eduardo; R. de Mello; Geraldo Zimbrão da Silva; Jano M. de Souza; Caixa Postal

2007-01-01

370

Lanzamiento del estudio de tratamiento personalizado para el cáncer de seno  

Cancer.gov

Hoy se inició el Estudio de Asignación de Opciones Individualizadas de Tratamiento (Trial Assigning IndividuaLized Options for Treatment (Rx), o TAILORx, el cual evaluará si los genes que están frecuentemente asociados con el riesgo de recurrencia entre las mujeres con cáncer de seno en etapa inicial pueden ser utilizados para asignar a las pacientes el tratamiento más adecuado y efectivo. Preguntas y respuestas

371

Structural elucidation, Hirshfeld surface analysis and quantum mechanical study of para-nitro benzylidene methyl arjunolate  

Microsoft Academic Search

A benzylidene derivative of arjunolic acid, namely, para-nitro benzylidene methyl arjunolate (3) have been synthesized and characterized by X-ray structural studies and the electronic structure was calculated at the DFT level with a detailed analysis of Hirshfeld surface and fingerprint plot facilitating a comparison of intermolecular interactions. The crystal packing of (3) exhibits intermolecular O-H⋯O and C-H⋯O hydrogen bonds forming

Saikat Kumar Seth; Gopal Chandra Maity; Tanusree Kar

2011-01-01

372

pH-dependent nitration of para-hydroxyphenylacetic acid in the stomach  

Microsoft Academic Search

The major urinary metabolite of nitrotyrosine is 3-nitro-4-hydroxyphenylacetic acid (3-Nitro-HPA). However, recent animal studies have shown that the majority of urinary 3-Nitro-HPA is derived from nitration of endogenous para-hydroxyphenylacetic acid (HPA), a metabolite of tyrosine. One potential site for the formation of 3-Nitro-HPA is the stomach, where nitrous acid is formed by the reaction of nitrite in saliva with gastric

Ananth S. Pannala; Ali R. Mani; Catherine A. Rice-Evans; Kevin P. Moore

2006-01-01

373

Para-position derivatives of fungal anthelmintic cyclodepsipeptides engineered with Streptomyces venezuelae antibiotic biosynthetic genes  

Microsoft Academic Search

PF1022A, a cyclooctadepsipeptide possessing strong anthelmintic properties and produced by the filamentous fungus Rosellinia sp. PF1022, consists of four alternating residues of N-methyl-L-leucine and four residues of D-lactate or D-phenyllactate. PF1022A derivatives obtained through modification of their benzene ring at the para-position with nitro or amino groups act as valuable starting materials for the synthesis of compounds with improved anthelmintic

Naomi Sumida; Kaoru Okakura; Tatsuki Moriya; Manabu Watanabe; Takeshi Murakami; Koji Yanai

2004-01-01

374

Structural elucidation, Hirshfeld surface analysis and quantum mechanical study of para-nitro benzylidene methyl arjunolate  

Microsoft Academic Search

A benzylidene derivative of arjunolic acid, namely, para-nitro benzylidene methyl arjunolate (3) have been synthesized and characterized by X-ray structural studies and the electronic structure was calculated at the DFT level with a detailed analysis of Hirshfeld surface and fingerprint plot facilitating a comparison of intermolecular interactions. The crystal packing of (3) exhibits intermolecular O–H?O and C–H?O hydrogen bonds forming

Saikat Kumar Seth; Gopal Chandra Maity; Tanusree Kar

2011-01-01

375

Anomalous Thermal Expansion of the Short Intermolecular Bond in para-Nitro-aniline  

Microsoft Academic Search

A RECENT determination of the detailed crystal structure of para-nitro-aniline has revealed an un usually short distance of approach (2.66 A.) between the oxygen atom of an NO2 group of one molecule and one of the carbon atoms of the aromatic nucleus on a proximate molecule1. This suggests special forces between these two atoms, the attraction of which appears to

P. J. McKeown; A. R. Ubbelohde; I. Woodward

1950-01-01

376

Raman, surface-enhanced Raman scattering and DFT study of para-nitro-aniline  

Microsoft Academic Search

Raman spectra of para-nitro-aniline (pNA), a molecule with high applicability potential in molecular electronics, were recorded in solid state and in ethanol solution. Complete assignment of the experimental spectra was made by using the B3LYP\\/6-31G(d) theoretical results. The calculated molecular electrostatic potential shows a high negative charge localized on the nitro group of pNA and the surface-enhanced Raman scattering (SERS)

Vasile Chi?; Monica M. Venter; Nicolae Leopold; Onuc Cozar

2008-01-01

377

Aplicao de Tcnicas de Redes Sociais para o Sucesso Alexandre Baro  

E-print Network

Aplicação de Técnicas de Redes Sociais para o Sucesso Educativo Alexandre Barão alexandrebarao combate ao insucesso escolar. A análise de redes sociais concentra-se nas relações existentes entre informação electrónicos, a aplicação da análise de redes sociais pode proporcionar um conjunto de inferências

da Silva, Alberto Rodrigues

378

Programa de Ps-Graduao em Metrologia Mestrado rea de Concentrao: Metrologia para Qualidade e Inovao  

E-print Network

Estratégica da Inovação e Sustentabilidade Aborda os fundamentos da Tecnologia Industrial Básica vis-a-vis os modelos conceituais e estudos empíricos de gestão da inovação e de sustentabilidade. Redes Inteligentes) para a configuração de redes inteligentes de energia. 4. Das Inscrições 4.1) As inscrições deverão ser

379

Parallel Visualization and Analysis with ParaView on a Cray XT4  

SciTech Connect

Scienti c data sets produced by modern supercomputers like ORNL s Cray XT 4, Jaguar, can be extremely large, making visualization and analysis more di cult as moving large resultant data to dedicated analysis systems can be pro- hibitively expensive. We share our continuing work of integrating a parallel visu- alization system, ParaView, on ORNL s Jaguar system and our e orts to enable extreme scale interactive data visualization and analysis. We will discuss porting challenges and present performance numbers.

Patchett, John [Los Alamos National Laboratory (LANL); Ahrens, James [Los Alamos National Laboratory (LANL); Ahern, Sean [ORNL; Pugmire, Dave [ORNL

2009-01-01

380

Sartenejas, 29 de junio de 2010 Criterios para la implantacin del documento electrnico  

E-print Network

Venezuela: aspectos legales, uso y certificación. Foro #12;Maribel De Sousa Centro Nacional de Tecnologías electrónica en Venezuela Hildamar Fernández Superintendencia de Servicios de Certificación Electrónica Marco Legal de la Certificación Electrónica y la Seguridad de información en Venezuela Criterios para la

Vásquez, Carlos

381

3D visualization of cardiac anatomical MRI data with para-cellular resolution.  

PubMed

Advances in research and clinical techniques are providing increasing quantities of data at improved spatio-temporal resolution. It is therefore imperative to develop matching approaches for efficient analysis and intuitive presentation of this data. Using the example of advanced magnetic resonance imaging, this article will illustrate the challenges involved in computational reconstruction and interactive visualization of the three-dimensional cardiac anatomy, based on magnetic resonance imaging data with para-cellular resolution. PMID:18001910

Goodyer, Christopher E; Grau, Vicente; Mansoori, Tahir; Schneider, Jurgen E; Brodlie, Ken W; Kohl, Peter

2007-01-01

382

Instrucciones para el Consentimiento de alguien que no es uno de los  

E-print Network

Instrucciones para el Consentimiento de alguien que no es uno de los padres a tratamiento médico Al final de la línea #1, escriba con letra de molde el nombre del menor. Sólo el nombre de un menor puede una copia a la forma. En las líneas #3 y #4, escriba con letra de molde el nombre completo del padre y

383

APLICAO DA ANLISE EXPLORATRIA PARA AVALIAO DA DIFERENCIAO DE ALIMENTOS PRODUZIDOS  

E-print Network

APLICA��O DA ANÁLISE EXPLORAT�RIA PARA AVALIA��O DA DIFERENCIA��O DE ALIMENTOS PRODUZIDOS orgânica e a expansão do consumo de alimentos assim produzidos. A área cultivada com produtos produzidos. As exportações do setor crescem a taxas de 50% ao ano. Nesse contexto, a indústria de alimentos necessita cada

Ferreira, Márcia M. C.

384

Spontaneous rearrangement of para-sexiphenyl crystallites into nano-fibers  

Microsoft Academic Search

In the growth of para-sexiphenyl films on mica(001), an interesting phenomenon was observed where small individual crystallites\\u000a spontaneously arrange into parallel running high-aspect ratio chains with a length in the micrometer range. A statistical\\u000a analysis of the chain dimensions reveals a very narrow length distribution and the existence of a threshold length. The observation\\u000a of denuded zones around the chains

C. Teichert; G. Hlawacek; A. Yu. Andreev; H. Sitter; P. Frank; A. Winkler; N. S. Sariciftci

2006-01-01

385

PROCEDIMENTOS PARA RECOLHIMENTO DE VALORES REFERENTES INSCRIO EM PROCESSOS SELETIVOS DOS CURSOS DE MESTRADO E DOUTORADO  

E-print Network

) 6) Competência: mês/ano do pagamento; 7) Vencimento: dia/mês/ano do pagamento; 8) CNPJ/CPF do interessado; 9) Nome do interessado; 12) Emitir GRU; 13) Imprimir; 14) Pagamento no Banco do Brasil em a impressão para posterior pagamento no Banco do Brasil. 4. Esta ordem de serviço entra em vigor a partir de

Paraná, Universidade Federal do

386

El tratamiento con cloro es un mtodo para desinfectar un pozo de agua. Se recomien-  

E-print Network

exceso de lluvia entran en el pozo. Si el agua subterránea constituye en sí la fuente de bacterias, elEl tratamiento con cloro es un método para desinfectar un pozo de agua. Se recomien- da cuando un sistema de agua está contam- inado con bacterias. La contaminación puede ocurrir en la instalación del

387

Theoretical and Experimental Studies on the Nonlinear Optical Chromophore para Bromoacetanilide  

Microsoft Academic Search

Vibrational spectral analysis of the hydrogen bonded non-linear optical (NLO) material para Bromo Acetanilide (PBA) is carried out using NIR FT-Raman and FT-IR spectroscopy. Ab initio molecular orbital computations have been performed at HF\\/6-31G(d) level to derive equilibrium geometry, vibrational wavenumbers, intensities and first hyperpolarizability. The lowering of the imino stretching wavenumbers suggests the existence of strong intermolecular N-H...O hydrogen

V. Bena Jothy; T. Vijayakumar; V. S. Jayakumar; K. Udayalekshmi; K. Ramamurthy; I. Hubert Joe

2008-01-01

388

Problema: Merzbacher 18.11 Aplique teoria de perturbao em segunda ordem para o potencial peridico  

E-print Network

Problema: Merzbacher 18.11 Aplique teoria de perturbação em segunda ordem para o potencial no limite L as funções de onda não perturbadas são ondas planas. b) Mostre que a teoria de perturbação não fronteira da zona de Brillouin deste problema, região onde a teoria não-degenerada falha pois En = En+r N

de Aguiar, Marcus A. M.

389

REDES-Revista hispana para el anlisis de redes sociales Vol.9,#6, Diciembre 2005  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.9,#6, Diciembre 2005 http://revista-redes sociales. Palabras clave: Análisis de Redes, Redes Políticas, Redes Sociales, Visualización de redes.rediris.es La explicación a través de la visualización de redes1 Ulrik Brandes, Universidad de Konstanz

Brandes, Ulrik

390

REDES-Revista hispana para el anlisis de redes sociales Vol.6,#7, Junio 2009  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.6,#7, Junio 2009 http://revista-redes.rediris.es En busca del contenido de las redes sociales: los "motivos" de las relaciones1 Claire Bidart2 , CNRS devolverle a la relación social su importancia como unidad básica de las redes sociales, y explorar lo que

Paris-Sud XI, Université de

391

REDES-Revista hispana para el anlisis de redes sociales Vol.15, #4, Diciembre 2008  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.15, #4, Diciembre 2008 http://revista-redes mixtos ­ análisis de redes sociales - visualización. Abstract By analyzing two waves of personal networksLab, Departament d'Antropologia social i cultural ­ UAB. Silvia.gomez@uab.cat. #12;36 Las redes personales desde un

Brandes, Ulrik

392

REDES-Revista hispana para el anlisis de redes sociales Vol.19,#10, Diciembre 2010  

E-print Network

REDES- Revista hispana para el análisis de redes sociales Vol.19,#10, Diciembre 2010 http://revista-redes industrial. El desarrollo de los métodos de análisis de redes sociales ha dado un nuevo impulso a los.rediris.es Redes de consejo en la industria biotecnológica en Francia1 Alvaro Piña-Stranger2 ­ IRISSO (CNRS

Boyer, Edmond

393

Abierto el plazo de presentacin de propuestas para la Semana de la Ciencia 2012  

E-print Network

Abierto el plazo de presentación de propuestas para la Semana de la Ciencia 2012 Un año más, bajo el lema Ven a la Ciencia, el Área de Cultura Científica de la OTRI-UCM se va a encargar de la coordinación de las propuestas de actividades que ofrecerá nuestra Universidad durante la Semana de la Ciencia

394

16. mu. m para-H/sub 2/ stimulated Raman laser  

SciTech Connect

A para-H/sub 2/ stimulated Raman laser pumped by a TEA CO/sub 2/ laser was developed. The main factors affecting Raman conversion efficiency are discussed. At a working temperature of 100 K, the maximum output energy of the Stokes beam at 16 ..mu..m was 536 mJ, corresponding to an energy conversion efficiency of 13% and a quantum conversion efficiency greater than 20%.

Jin Chunzhi; Lin Taiji; Wu Xuhua; Niu Zhenya; Ding Yishan; Li Dianjun; Zhu Youxin; Li Yulan; Yang Jinfeng; Wang Naihong; and others

1988-08-01

395

Reconocer los derechos de los migrantes para fortalecer la integracin regional  

E-print Network

Reconocer los derechos de los migrantes para fortalecer la integración regional Buscando una vida su derecho al trabajo. ·El bienestar de las personas migrantes requiere que el Estado y los empleadores garanticen sus derechos sin distinción de condición jurídica, política o social. ·Los más

Richner, Heinz

396

E-001 Partial central retinal artery occlusion following para-ophthalmic artery embolization: a case report  

Microsoft Academic Search

BackgroundCoil embolization of para-ophthalmic artery aneurysms can result in acute as well as delayed visual complications. Progressive visual changes have been have been ascribed to mass effect from aneurysm thrombosis or peri-aneurysmal inflammation or edema. Abrupt, fixed visual changes are likely secondary to thromboembolic complications which result in retinal infarcts via the ophthalmic artery. Although thromboembolic complications are well described

S Chowdhry; J Sharma; K Blackham

2011-01-01

397

Ground state and excited state dipole moments of alkyl substituted para-nitroaniline derivatives.  

PubMed

The ground state and excited state dipole moment of a series of alkyl substituted para-nitroaniline derivatives is reported. Ground state dipole moment was determined by the Debye-Guggenheim method and the excited state dipole moment was estimated using the solvatochromic method. For all molecules under investigation, the excited state dipole moment was found to be higher than the ground state dipole moment. The molecules exhibited positive solvatochromism. PMID:18524672

Dhanya, R; Kishore, V C; Sudha Kartha, C; Sreekumar, K; Joseph, Rani

2008-12-15

398

Stable self-trapping and ring formation in polydiacetylene para-toluene sulfonate  

NASA Astrophysics Data System (ADS)

Numerical simulations of two-dimensional beam propagation in polydiacetylene para-toluene sulfonate measured values for n2>0 and n3<0 , where Delta n=n2I+n 3I2 , predict stable self-trapping and a new phenomenon in which a spatial ring evolves from a Gaussian input beam. We interpret the numerical results theoretically, using the variational model of nonlinear Gaussian beam propagation.

Wright, Ewan M.; Lawrence, Brian L.; Torruellas, William; Stegeman, George

1995-12-01

399

Desenvolvimento de um programa computacional para implantação econômica de lavouras canavieiras  

Microsoft Academic Search

Desenvolveu-se um algoritmo para a implantação convencional de lavouras canavieiras e em adição, uma implantação diferenciada com a finalidade de proporcionar produções, em toneladas, iguais nos anos subseqüentes à implantação, visto que, com o passar dos anos, as produtividades da cana-de-açúcar são diferentes; contudo, a nova metodologia fica limitada à área máxima de plantio, sendo que, em alguns casos, a

Tadeu A. Marques; Gil E. Serra; Patrícia A. A. Marques

2006-01-01

400

Estratgias de Integrao Reduzida para Clculo de Velocidades e Presses em Meios Porosos  

E-print Network

computacional. São apresentados exemplos numéricos de validação, incluindo a análise numérica dos esquemas de­se uma alternativa interessante para diminuir o custo computacional da avaliação destas integrais eficiencia computacional. Algumas metodologias de estabilização (hourglass control) já são utilizadas

Coutinho, Alvaro L. G. A.

401

Geometria Computacional para Visualizacion: El marco Perez-Moneo Agapito, Juan Diego Finat Codes, Javier  

E-print Network

Geometr´ia Computacional para Visualizaci´on: El marco UvaCAD P´erez-Moneo Agapito, Juan Diego Geometr´ia Com- putacional, Visi´on Computacional e Inform´atica Gr´afica, pero ninguna biblioteca que´onico). UvaCad integra diferentes librer´ias de Geometr´ia y Visi´on Computacional y diversas librer´ias gen

Llanos, Diego R.

402

A sensitive and selective enzyme-linked immunosorbent assay for the analysis of Para red in foods.  

PubMed

Para red is a synthetic dye and a potential genotoxic carcinogen. A hapten mimicking Para red structure was synthesized by introducing a carboxyl to the naphthol part of Para red and coupled to carrier protein to form an immunogen for the production of specific antibodies. A sensitive and selective enzyme-linked immunosorbent assay (ELISA) was developed for the detection of Para red in food samples. The limit of detection and inhibition half-maximum concentrations of Para red in phosphate buffered saline with 10% methanol were 0.06 and 2.2 ng mL(-1), respectively. Cross-reactivity values of the ELISA with the tested compounds including Sudan red I, II, III, IV, and G, sunset yellow, 2-naphthol, and 4-nitroaniline were ?0.2%. This assay was used to determine Para red in tomato sauce, chilli sauce, chilli powder and sausage samples after ultrasonic extraction, cleanup and concentration steps. The average recoveries, repeatability (intraday extractions and analysis), and intra-laboratory reproducibility (interday extractions and analysis) were in the range 90-108%, 4-12% and 8-17%, respectively. This assay was compared to a high-performance liquid chromatographic method for 28 samples, displaying a good correlation (R(2) = 0.95). Para red residues in 53 real world samples determined by ELISA were below the limit of detection. PMID:22439137

Wang, Jia; Wei, Keyi; Li, Hao; Li, Qing X; Li, Ji; Xu, Ting

2012-05-01

403

Isolation and characterization of a novel Rhodococcus strain with switchable carbonyl reductase and para-acetylphenol hydroxylase activities.  

PubMed

In the search for an effective biocatalyst for the reduction of acetophenones with unprotected hydroxy group on the benzene ring, a microorganism, which reduced para-acetylphenol to S-(-)-1-(para-hydroxyphenyl)ethanol under anaerobic conditions, was isolated from soil samples and the 16S rDNA study showed that it was phylogenetically affiliated with species of the genus Rhodococcus and was most similar to Rhodococcus pyridinivorans. Unexpectedly, this strain also hydroxylated para-acetylphenol to give 4-acetylcatechol in presence of oxygen, possessing para-acetylphenol hydroxylase activity. While the reduction of para-acetylphenol had an optimal reaction pH at 7 and a broad optimal temperature range (35-45 °C), the hydroxylation reached the maximum conversion at the pH range of 7-8 and 35 °C. This study identified for the first time a Rhodococcus strain with para-acetylphenol hydroxylase activity, which also contains highly enantioselective carbonyl reductase activity with potential applications for the asymmetric reduction of these less-explored but important ketones such as ?-aminoacetophenone, 3'-hydroxyacetophenone and 4'-hydroxyacetophenone. The para-acetylphenol hydroxylase and carbonyl reductase activity are switchable by the reaction conditions. PMID:23014895

Zhang, Rui; Ren, Jie; Wang, Yu; Wu, Qiaqing; Wang, Min; Zhu, Dunming

2013-01-01

404

The ortho:para ratio of H3+ in laboratory and astrophysical plasmas  

NASA Astrophysics Data System (ADS)

The discovery of H3+ in the diffuse interstellar medium has dramatically changed our view of the cosmic-ray ionization rate in diffuse molecular clouds. However, another surprise has been that the ortho:para ratio of H3+ in these clouds is inconsistent with the temperature derived from the excitation of H2, the dominant species in these clouds. In an effort to understand this discrepancy, we have embarked on an experimental program to measure the nuclear spin dependence of the dissociative electron recombination rate of H3+ using the CRYRING and TSR ion storage rings. We have also performed the first measurements of the reaction H3++ H2? H2+ H3+ below room temperature. This reaction is likely the most common bimolecular reaction in the universe, and plays an important role in interconverting ortho- and para-H3+. Finally, we have constructed a steady-state chemical model for diffuse clouds, which takes into account the spin-dependence of the formation of H3+, its electron recombination, and its reaction with H2. We find that the ortho:para ratio of H3+ in diffuse clouds is likely governed by a competition between dissociative recombination and thermalization by reactive collisions.

Crabtree, Kyle N.; Indriolo, Nick; Kreckel, Holger; McCall, Benjamin J.

2015-01-01

405

A non-equilibrium ortho-to-para ratio of water in the Orion PDR  

E-print Network

The ortho-to-para ratio (OPR) of H$_2$O is thought to be sensitive to the temperature of water formation. The OPR of H$_2$O is thus useful to study the formation mechanism of water. We investigate the OPR of water in the Orion PDR (Photon-dominated region), at the Orion Bar and Orion S positions, using data from {\\it Herschel}/HIFI. We detect the ground-state lines of ortho- and para-H$_2$$^{18}$O in the Orion Bar and Orion S and we estimate the column densities using LTE and non-LTE methods. Based on our calculations, the ortho-to-para ratio (OPR) in the Orion Bar is 0.1 $-$ 0.5, which is unexpectedly low given the gas temperature of $\\sim$ 85 K, and also lower than the values measured for other interstellar clouds and protoplanetary disks. Toward Orion S, our OPR estimate is below 2. This low OPR at 2 positions in the Orion PDR is inconsistent with gas phase formation and with thermal evaporation from dust grains, but it may be explained by photodesorption.

Choi, Y; Bergin, E A; Plume, R

2014-01-01

406

Fragrance material review on 1-(para-menthen-6-yl)-1-propanone.  

PubMed

A toxicologic and dermatologic review of 1-(para-Menthen-6-yl)-1-propanone when used as a fragrance ingredient is presented. 1-(para-Menthen-6-yl)-1-propanone is a member of the fragrance structural group Alkyl Cyclic Ketones. These fragrances can be described as being composed of an alkyl, R1, and various substituted and bicyclic saturated or unsaturated cyclic hydrocarbons, R2, in which one of the rings may include up to 12 carbons. Alternatively, R2 may be a carbon bridge of C2-C4 carbon chain length between the ketone and cyclic hydrocarbon. This review contains a detailed summary of all available toxicology and dermatology papers that are related to this individual fragrance ingredient and is not intended as a stand-alone document. Available data for 1-(para-Menthen-6-yl)-1-propanone were evaluated then summarized and includes physical properties, acute toxicity, skin irritation, and skin sensitization, data. A safety assessment of the entire Alkyl Cyclic Ketones will be published simultaneously with this document; please refer to Belsito et al. (2013) [Belsito, D., Bickers, D., Bruze, M., Calow, P., Dagli, M., Fryer, A.D., Greim, H., Miyachi, Y., Saurat, J.H., Sipes, I.G., 2013 A Toxicologic and Dermatologic Assessment of Alkyl Cyclic Ketones When Used as Fragrance Ingredients. Submitted with this manuscript.] for an overall assessment of the safe use of this material and all Alkyl Cyclic Ketones in fragrances. PMID:24246181

Scognamiglio, J; Letizia, C S; Api, A M

2013-12-01

407

The ortho:para-H_2 ratio in C- and J-type shocks  

NASA Astrophysics Data System (ADS)

We have computed extensive grids of models of both C- and J-type planar shock waves, propagating in dark, cold molecular clouds, in order to study systematically the behaviour of the ortho:para-H_2 ratio. Careful attention was paid to both macroscopic (dynamical) and microscopic (chemical reactions and collisional population transfer in H_2) aspects. We relate the predictions of the models to observational determinations of the ortho:para-H_2 ratio using both pure rotational lines and rovibrational lines. As an illustration, we consider ISO and ground-based H_2 observations of HH 54. Neither planar C-type nor planar J-type shocks appear able to account fully for these observations. Given the additional constraints provided by the observed ortho:para H_2 ratios, a C-type bowshock, or a C-type precursor followed by a J-type shock, remain as plausible models. Tables~2a-f and 4a-f are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html

Wilgenbus, D.; Cabrit, S.; Pineau des Forêts, G.; Flower, D. R.

2000-04-01

408

[Neuroendoscopic surgery for intra- and para-ventricular tumors:impacts on biopsy and hydrocephalus treatment].  

PubMed

In this report, the authors retrospectively review and discuss their results for neuroendoscopic surgery for intra- and para-ventricular tumors. This study included 28 patients who were admitted to our hospital for intra- or para-ventricular tumors between January 2005 and March 2013. There were 17 males and 11 females, and their age varied widely from 1 to 75 years. Using a neuroendoscopic technique, tumor biopsy was attempted in all 28 patients. Biopsy was possible in 25 patients(89.3%)but not in the other 3(10.7%)because of hypervascularity or tumor bleeding. Of these 25 patients, pathological diagnosis was possible in 23(92%), but not in other 2(8%)because of incomplete sampling. In 18 of 28 patients, various forms of hydrocephalus were observed. Neuroendoscopic procedures were quite useful to improve cerebrospinal fluid dynamics in 13 of these patients, including endoscopic third ventriculostomy(ETV)in 9(except for 1 patient with ETV failure), septostomy with ventriculoperitoneal shunting(VPS)in 3, and cystostomy in 1. Simple VPS was performed in the other 4 patients. These results suggest that neuroendoscopic surgery is valuable as a minimally invasive procedure for pathological diagnosis and hydrocephalus treatments in patients with intra- and para-ventricular tumors. Further development of neuroendoscopic equipment is warranted to accurately diagnose tumors with hypervascularity and subependymal tumors. PMID:24598869

Kurosaki, Kunikazu; Hayashi, Nakamasa; Hamada, Hideo; Nagai, Shoichi; Endo, Shunro; Kuroda, Satoshi

2014-03-01

409

Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones  

USGS Publications Warehouse

Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero los aficionados pueden llevar a cabo la mayor parte del trabajo. Es posible almacenar los resultados en un computador personal. Hay muchos beneficios: (I) se presenta la distribucion corriente de las aves de la nacion, del estado, o de la Iocalidad; (2) se desarrolla nueva informacion especialmente sobre especies raras o en peligro; (3) se descubren areas que tienen una avlfauna sobresaliente o habitats raros y ayuda a su proteccion, (4) se documentan cambios de dlstribucion; (5) se pueden usar para documentar cambios de poblacion, especialmente en los tropicos donde otros metodos son mas dificiles de usar porque hay muchas especies y no hay muchos observadores calificados en la identificacion de sonidos de las aves; (6) son proyectos buenos de investigacion para estudiantes graduados; (7) los turistas y los jefes de excursiones de historia natural pueden contribuir con muchas informaciones

Robbins, C.S.; Dowell, B.A.; Dawson, D.K.

1988-01-01

410

Identification of an intact ParaHox cluster with temporal colinearity but altered spatial colinearity in the hemichordate Ptychodera flava  

PubMed Central

Background ParaHox and Hox genes are thought to have evolved from a common ancestral ProtoHox cluster or from tandem duplication prior to the divergence of cnidarians and bilaterians. Similar to Hox clusters, chordate ParaHox genes including Gsx, Xlox, and Cdx, are clustered and their expression exhibits temporal and spatial colinearity. In non-chordate animals, however, studies on the genomic organization of ParaHox genes are limited to only a few animal taxa. Hemichordates, such as the Enteropneust acorn worms, have been used to gain insights into the origins of chordate characters. In this study, we investigated the genomic organization and expression of ParaHox genes in the indirect developing hemichordate acorn worm Ptychodera flava. Results We found that P. flava contains an intact ParaHox cluster with a similar arrangement to that of chordates. The temporal expression order of the P. flava ParaHox genes is the same as that of the chordate ParaHox genes. During embryogenesis, the spatial expression pattern of PfCdx in the posterior endoderm represents a conserved feature similar to the expression of its orthologs in other animals. On the other hand, PfXlox and PfGsx show a novel expression pattern in the blastopore. Nevertheless, during metamorphosis, PfXlox and PfCdx are expressed in the endoderm in a spatially staggered pattern similar to the situation in chordates. Conclusions Our study shows that P. flava ParaHox genes, despite forming an intact cluster, exhibit temporal colinearity but lose spatial colinearity during embryogenesis. During metamorphosis, partial spatial colinearity is retained in the transforming larva. These results strongly suggest that intact ParaHox gene clustering was retained in the deuterostome ancestor and is correlated with temporal colinearity. PMID:23802544

2013-01-01

411

Estudio de terapias dirigidas para el cáncer de seno estableció un modelo de estudios clínicos a nivel mundial  

Cancer.gov

Dos medicamentos de acción dirigida, diseñados para tratar una forma agresiva de cáncer de seno (mama), se pusieron a prueba en un estudio que incluyó a 8 000 participantes en 44 países. Si bien la finalidad del estudio fue ayudar a que los investigadores determinaran si el tratamiento combinado con trastuzumab y lapatinib para el tratamiento del cáncer de seno HER2 positivo en estado inicial era mejor que la terapia solo con trastuzumab, los resultados del estudio no indicaron que existan ventajas para las mujeres al recibir la combinación de fármacos de trastuzumab o lapatinib.

412

A single amino acid change in the para sodium channel protein is associated with knockdown-resistance ( kdr) to pyrethroid insecticides in German cockroach  

Microsoft Academic Search

Previous genetic and pharmacological studies suggest that knockdown-resistance (kdr) to pyrethroid insecticides likely results from a mutation(s) in the para sodium channel gene. In this study, para sodium channel genes from an insecticide-susceptible German cockroach strain, CSMA, and a kdr-type German cockroach strain, Ectiban-R, were cloned and sequenced. Comparison of the nucleotide sequences of paraCSMA and paraEctiban-R revealed two nucleotide

Ke Dong

1997-01-01

413

ParaDyn Implementation in the US Navy's DYSMAS Simulation System: FY08 Progress Report  

SciTech Connect

The goal of this project is to increase the computational efficiency and capacity of the Navy's DYSMAS simulation system for full ship shock response to underwater explosion. Specifically, this project initiates migration to a parallel processing capability for the structural portion of the overall fluid-structure interaction model. The capstone objective for the first phase is to demonstrate operation of the DYSMAS simulation engine with a production model on a Naval Surface Warfare Center (IHD) parallel platform using the ParaDyn code for parallel processing of the structural dynamics. This year saw a successful launch to integrate ParaDyn, the high-parallel structural dynamics code from Lawrence Livermore National Laboratory (LLNL), into the DYSMAS system for simulating the response of ship structures to underwater explosion (UNDEX). The current LLNL version of DYNA3D, representing ten years of general development beyond the source branch used to initiate DYNA-N customization for DYSMAS, was first connected to the GEMINI flow code through DYSMAS Standard Coupler Interface (SCI). This permitted an early 'sanity check' by Naval Surface Warfare Center, Indian Head Division (NSWC-IHD) personnel that equivalent results were generated for their standard UNDEX test problems, thus ensuring the Verification & Validation pedigree they have developed remains intact. The ParaDyn code was then joined to the SCI in a manner requiring no changes to GEMINI. Three NSWC-IHD engineers were twice hosted at LLNL to become familiar with LLNL computer systems, the execution of the prototype software system, and to begin assessment of its accuracy and performance. Scaling data for the flow solver GEMINI was attained up to a one billion cell, 1000 processor run. The NSWC-IHD engineers were granted privileges to continue their evaluations through remote connections to LLNL's Open Computing Facility. Finally, the prototype changes were integrated into the mainline ParaDyn source repository and issued as part of its Version 8.1 beta release. This source was transmitted to NSWC-IHD and in collaboration with LLNL personnel the entire ParaDyn software suite successfully installed and demonstrated on its new SGI Altix machine. The ability of even minor numbers of processors for the structural dynamics to impact overall time-to-solution for DYSMAS has been demonstrated. Assessments of combined parallel efficiencies are beginning to highlight areas for further DYSMAS optimizations.

Ferencz, R M; DeGroot, A J; Lin, J I; Zywicz, E; Durrenberger, J K; Sherwood, R J; Corey, I R

2008-07-29

414

Aplicação de planejamento fatorial fracionário e box-behnken para otimização de extração com microgota para determinação de tricloroanisol e tribromoanisol de amostras de vinho por cromatografia a gás.  

E-print Network

??Neste trabalho foi desenvolvida uma metodologia analítica para determinação de 2,4,6-tricloroanisol e 2,4,6-tribromoanisol, os quais proporcionam cheiro de mofo ao vinho. A metodologia desenvolvida baseou-se… (more)

Edmar Martendal

2007-01-01

415

Resultados de estudio para cáncer de pulmón indican beneficio en mortalidad con el uso de tomografía computarizada de baja dosis  

Cancer.gov

El Instituto Nacional del Cáncer (NCI) da a conocer hoy resultados iniciales de un estudio de gran envergadura sobre métodos de detección para reducir el número de muertes por cáncer de pulmón al detectar cánceres en estadios relativamente iniciales.

416

IN VITRO EMBRYOTOXICITY OF A SERIES OF PARA-SUBSTITUTED PHENOLS: STRUCTURE, ACTIVITY AND CORRELATION WITH IN VIVO DATA  

EPA Science Inventory

The embryotoxicity of phenol and twelve para-substituted congeners on mid-gestation rat embryos was evaluated in vitro. hrough application of correlative procedures and stepwise regression, equation describing the relationship between physical-chemical properties and various meas...

417

APORTES TEÓRICO-METODOLÓGICOS PARA EL ESTUDIO DE LA PRODUCCIÓN SOCIAL DE SENTIDO A TRAVÉS DEL ANÁLISIS DEL DISCURSO PRESIDENCIAL  

Microsoft Academic Search

Este artículo presenta un enfoque teórico-metodológico para el estudio de las significaciones políticas. Se apunta a contribuir a la reflexión acerca del papel del discurso presidencial en la construcción de una \\

Víctor Armony

2005-01-01

418

2013-2014 Parent & Family Guide Texas Tech universiTy 1 especialmente para padres y familiares ........................................................................................ 2  

E-print Network

2013-2014 Parent & Family Guide Texas Tech universiTy 1 Contenido especialmente para padres y ........................................................ 8 recursos académicos en Texas Tech ..................................................................................................................... 22 Tradiciones de Texas Tech

Gelfond, Michael

419

MorphTrans: un lenguaje y un compilador para especi car y generar m odulos de transferencia  

E-print Network

;ogica avanza- da que es muy parecida a la utilizada en sis- temas de TA comerciales para PC tales como es un avance con res- pecto al mero an#19;alisis morfol#19;ogico y puede ser considerado como una

Forcada, Mikel L.

420

Dysregulation in Retinal Para-Inflammation and Age-Related Retinal Degeneration in CCL2 or CCR2 Deficient Mice  

Microsoft Academic Search

We have shown previously that a para-inflammatory response exists at the retinal\\/choroidal interface in the aging eye; and this response plays an important role in maintaining retinal homeostasis under chronic stress conditions. We hypothesized that dysregulation of the para-inflammatory response may result in an overt pro-inflammatory response inducing retinal degeneration. In this study, we examined this hypothesis in mice deficient

Mei Chen; John V. Forrester; Heping Xu

2011-01-01

421

Conformational isomerism in the solid-state structures of tetracaine and tamoxifen with para-sulphonato-calix[4]arene  

NASA Astrophysics Data System (ADS)

The solid-state complexes between para-sulphonato-calix[4]arene and the drugs tamoxifen and tetracaine show an unusual 4:1 guest-host stoichiometry with formation of hydrophobic layer of drug molecules held between bilayers of para-sulphonato-calix[4]arene. In both structures each of the four independent drug molecules adopts different conformation due to the different mode of interaction with the anionic host, the neighbouring drug cations and water molecules.

Danylyuk, Oksana; Monachino, Melany; Lazar, Adina N.; Suwinska, Kinga; Coleman, Anthony W.

2010-02-01

422

Su "Derecho a Saber" es el trmino genrico que describe los derechos legales de un empleado para obtener  

E-print Network

Su "Derecho a Saber" es el término genérico que describe los derechos legales de un empleado para.405.3960 · FA X : 301.314.9294 Su Derecho a Saber Department of Environmental Safety Division of Administrative Derecho a Saber" a través del correo del campus. Este folleto contiene toda la información necesaria para

Rubloff, Gary W.

423

Tempo de Converg^encia para o Equilibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento  

E-print Network

Tempo de Converg^encia para o Equil´ibrio de Nash nos Jogos Empacotamento de Itens e Balanceamento convergência para o equilíbrio de Nash nos jogos empacotamento de itens e balanceamento de carga / André Luís) - Universidade Estadual de Campinas, Instituto de Computação. 1. Teoria dos jogos. 2. Problema de empacotamento

Vignatti, André L.

424

Supported transition metal catalysts for para- to ortho-hydrogen conversion  

NASA Technical Reports Server (NTRS)

The main goal of this study was to develop and improve on existing catalysts for the conversion of ortho- to para-hydrogen. Starting with a commercially available Air Products nickel silicate, which had a beta value of 20, we were trying to synthesize catalysts that would be an improvement to AP. This was accomplished by preparing silicates with various metals as well as different preparation methods. We also prepared supported ruthenium catalysts by various techniques using several metal precursors to improve present technology. What was also found was that the activation conditions prior to catalytic testing was highly important for both the silicates and the supported ruthenium catalysts. While not the initial focus of the research, we made some interesting observations into the adsorption of H2 on ruthenium. This helped us to get a better understanding of how ortho- to para-H2 conversion takes place, and what features in a catalyst are important to optimize activity. Reactor design was the final area in which some interesting conclusions were drawn. As discussed earlier, the reactor catalyst bed must be constructed using straight 1/8 feet OD stainless steel tubing. It was determined that the use of 1/4 feet OD tubing caused two problems. First, the radius from the center of the bed to the wall was too great for thermal equilibrium. Since the reaction of ortho- to para-H2 is exothermic, the catalyst bed center was warmer than the edges. Second, the catalyst bed was too shallow using a 1/4 feet tube. This caused reactant blow-by which was thought to decrease the measured activity when the flow rate was increased. The 1/8 feet tube corrected both of these concerns.

Brooks, Christopher J.; Wang, Wei; Eyman, Darrell P.

1994-01-01

425

A Introdução de Astronomia Básica para Estudantes de 5 e 6 Séries do Ensino Fundamental  

NASA Astrophysics Data System (ADS)

Com intuito de despertar o interesse pelo estudo da astronomia, desenvolveu-se entre 2003 e 2006 no Centro Educacional do Serviço Social da Indústria situado no município de Mauá, São Paulo, um trabalho com duração de 12 meses para turmas de 11 e 12 anos, sendo três turmas por período (2003 / 2004, 2004 / 2005 e 2005 / 2006). O trabalho realizado, objetivando a introdução da astronomia básica com observações de constelações e das fases da Lua, permitindo estender-se a outros corpos celestes, iniciou-se com visita ao planetário Mundo Estelar, localizado no Ipiranga, São Paulo levantou-se a questão da importância do estudo da astronomia e foi lançado aos estudantes um trabalho de observação, com a proposta de localizar as constelações e compreender as fases da Lua, para o registro de tais observações, foram distribuídos mapas celestes, pastas, planilhas de anotações com lacunas para, constelações, fases da Lua e relatos, onde os estudantes acrescentaram pesquisas e relatórios. Os resultados dos 346 estudantes foram que 86,7% (300) concluíram a etapa de observação, destes 300 estudantes 43,3% (130) pesquisaram sobre as constelações e 19,0% (57) localizaram até quatro constelações. Dos 346 estudantes, 44,2% (153) registraram as fases da Lua equivocadamente e 10,4% (36) anexaram reportagens sobre astronomia. Conclui-se que os estudantes se dividiram em pesquisadores, sendo os estudantes que registraram e anexaram informações e, os observadores que preencheram as planilhas de observações, além de desenvolverem habilidades e competências relacionadas ao estudo da astronomia.

Gonzaga, E. P.; Voelzke, M. R.

2008-09-01

426

Haze, Methane And Para-hydrogen Distributions On Uranus And Neptune  

NASA Astrophysics Data System (ADS)

The distribution of aerosols, methane, and molecular hydrogen-para fraction on Uranus and Neptune are investigated from spatially resolved near-IR spectra. For reasons not yet understood, Neptune is one of the most meteorologically active planets in the solar system. Uranus, which appeared relatively featureless in Voyager 2 images, has shown increased activity in recent years [1], presumably revealing seasonal changes. The advent of the HST and adaptive optics technology has allowed researchers to map clouds and retrieve chemical abundances [2,3], providing clues to the dynamics driving these worlds. For this study, latitude resolved H- and K-band spectra and images were obtained using adaptive optics on the 200” Hale telescope at the Palomar Observatory. Data was acquired nearly annually from 1999 to 2007, with several longitudes covered each year. We use an objective, systematic retrieval algorithm (using singular value decomposition) to minimize differences between observed and modeled spectra. Best fitting vertical profiles of aerosol and methane abundance are retrieved, along with the molecular hydrogen para-fraction. Most observations suggest two layers of aerosols, with a stratospheric depletion of methane, and roughly equilibrium para-fractions, each varying with latitude. These parameters are tracers of atmospheric motions and can provide insight into the atmospheric circulations. Variations in latitude suggest regions of stronger upwelling while temporal changes suggest seasonal change. This project was funded under the NASA Outer Planets Research program. [1] Rages, K.A., H.B. Hammel and A.J. Friedson, 2004. Evidence for temporal change at Uranus’ south pole. Icarus, 172, 548-554. [2] Sromovsky, L.A. and P.M.Fry, 2008. The methane abundance and structure of Uranus’ cloud bands inferred from spatially resolved 2006 Keck grism spectra. Icarus, 193, 252-266 [3] Karkoschka, E., 2011. Neptune’s cloud and haze variations 1994-2008 from 500 HST-WFPC2 images. Icarus 215. 759-773.

Roman, Michael; Banfield, D.; Gierasch, P. J.; Stam, D. M.

2012-10-01

427

Self-assembled monolayers of benzylmercaptan and para-cyanobenzylmercaptan on gold: surface infrared spectroscopic characterization.  

PubMed

Self-assembled monolayers (SAMs) on gold substrates were prepared from benzylmercaptan (BM) and para-cyanobenzylmercaptan (pCBM), and the resulting surfaces were investigated using conventional infrared reflection-absorption spectroscopy (IRRAS) as well as polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS). IRRAS data are analyzed by comparison with transmission IR spectra and theoretical (DFT) simulations. The spectroscopic results indicate the presence of well-ordered monolayers of BM and pCBM with an orientation perpendicular to the surface. IRRAS and PM-IRRAS data are compared to each other and the respective merits of both methods are discussed. PMID:20407711

Rajalingam, K; Hallmann, L; Strunskus, T; Bashir, A; Wöll, C; Tuczek, F

2010-05-01

428

Experimental and theoretical investigation of 5-para-nitro-benzylidene-thiazolidine-2-thione-4-one molecule  

Microsoft Academic Search

Experimental methods (FT-IR, Raman and NMR spectroscopies, and X-ray diffraction technique) coupled with quantum chemical calculations based on density functional theory (DFT) are used for structural and electronic characterization of 5-para-nitro-benzylidene-thiazolidine-2-thione-4-one (5pN-BTT).X-ray diffraction technique indicates that this compound crystallizes with one tetrahydrofuran (THF) solvent molecule, forming a 1:1 5pN-BTT·THF complex, in the monoclinic space group C2\\/c, with Z=8 and cell

Adrian Pîrnau; Vasile Chis; Laszlo Szabo; Onuc Cozar; Mihai Vasilescu; Ovidiu Oniga; Richard A. Varga

2009-01-01

429

Um Framework para Proviso de QoS em Redes Mveis Sem Fio1  

E-print Network

Um Framework para Provisão de QoS em Redes Móveis Sem Fio1 Luciana dos Santos Lima, Antônio Tadeu A provisão de QoS em redes móveis sem fio integrando soluções isoladas encontradas na literatura. Esses descrita através de um cenário simulado em que serviços integrados são oferecidos sobre uma rede IP Móvel

Colcher, Sérgio

430

Un diverticule géant para urétéral chez l’enfant révélé par une masse pelvienne  

PubMed Central

Résumé Nous rapportons un cas de diverticule géant para-urétéral chez un enfant de 18 mois, du point de vue des aspects cliniques, diagnostiques et thérapeutiques. Aucune anomalie associée n’a été relevée. Le patient était un enfant de sexe masculin, et la symptomatologie était dominée par la rétention aiguë d’urine et la présence d’une infection urinaire. La chirurgie a consisté en une diverticulectomie laparoscopique avec réimplantation urétéro-vésicale. L’évolution a été favorable avec disparition des signes urinaires. PMID:24940473

Kassogué, Amadou; Diarra, Alkadri; Benzekri, Younes; Doumbia, Aliou; Bouabdallah, Youssef; Traoré, Zacharia; Tizniti, Siham; Mellas, Soufiane; Tazi, Mohammed Fald; Ammari, Jalal Eddine El; Khallouk, Abdelhak; Fassi, Mohammed Jamal El; Farih, My Hassan

2014-01-01

431

Requisitos Generales (Vigencia: desde Febrero de 2009) Ayuda Econmica para Trabajos Finales de Grado  

E-print Network

clase económica (si aplica). En caso de Pasantías dentro de Venezuela, el monto de la ayuda económica) días, a razón de 4 UT por día. La ayuda económica para eventos dentro de Venezuela (Pasantías y caso de Pasantías fuera de Venezuela, el monto de la ayuda económica cubrirá el costo del boleto aéreo

Vásquez, Carlos

432

A para-nitrophenol phosphonate probe labels distinct serine hydrolases of Arabidopsis.  

PubMed

Activity-based protein profiling represents a powerful methodology to probe the activity state of enzymes under various physiological conditions. Here we present the development of a para-nitrophenol phosphonate activity-based probe with structural similarities to the potent agrochemical paraoxon. We demonstrate that this probes labels distinct serine hydrolases with the carboxylesterase CXE12 as the predominant target in Arabidopsis thaliana. The designed probe features a distinct labeling pattern and therefore represents a promising chemical tool to investigate physiological roles of selected serine hydrolases such as CXE12 in plant biology. PMID:21763150

Nickel, Sabrina; Kaschani, Farnusch; Colby, Tom; van der Hoorn, Renier A L; Kaiser, Markus

2012-01-15

433

ortho-, meta-, and para-Dihydroindenofluorene Derivatives as Host Materials for Phosphorescent OLEDs.  

PubMed

This work reports the first structure-properties relationship study of ortho [2,1-c]-, meta [1,2-a]-, and para [1,2-b]dihydroindenofluorenes, highlighting the influence of bridge rigidification on the electronic properties. This study has made it possible to devise an extended ?-conjugated molecule with both a high triplet state energy level and excellent thermal and morphological stability. As a proof of concept, dihydroindenofluorenes were used as the host in sky-blue phosphorescent organic light-emitting diodes (PhOLEDs) with high performance. PMID:25469476

Romain, Maxime; Thiery, Sébastien; Shirinskaya, Anna; Declairieux, Céline; Tondelier, Denis; Geffroy, Bernard; Jeannin, Olivier; Rault-Berthelot, Joëlle; Métivier, Rémi; Poriel, Cyril

2015-01-19

434

Selective infrared photodissociation of protonated para-fluorophenol isomers: Substitution effects in oxonium and fluoronium ions  

NASA Astrophysics Data System (ADS)

Isomer-selective infrared photodissociation (IRPD) spectra are obtained for the first time for protonated polyfunctional aromatic molecules isolated in the gas phase. IRPD spectra of the oxonium and fluoronium isomers of protonated para-fluorophenol (C6H6FO+) were separately obtained by monitoring resonant photo-induced H2O and HF loss, respectively. Analysis of the F-H, O-H, and C-H stretch wave numbers provides valuable spectroscopic information on the chemical properties of these reactive intermediates, in particular on the substitution effects of functional groups.

Solcà, Nicola; Dopfer, Otto

2004-07-01

435

Selective infrared photodissociation of protonated para-fluorophenol isomers: substitution effects in oxonium and fluoronium ions.  

PubMed

Isomer-selective infrared photodissociation (IRPD) spectra are obtained for the first time for protonated polyfunctional aromatic molecules isolated in the gas phase. IRPD spectra of the oxonium and fluoronium isomers of protonated para-fluorophenol (C6H6FO+) were separately obtained by monitoring resonant photo-induced H2O and HF loss, respectively. Analysis of the F-H, O-H, and C-H stretch wave numbers provides valuable spectroscopic information on the chemical properties of these reactive intermediates, in particular on the substitution effects of functional groups. PMID:15260603

Solca, Nicola; Dopfer, Otto

2004-07-01

436

Electrically conducting poly(para-phenylene sulfide) prepared by doping with nitrosyl salts from solution  

NASA Astrophysics Data System (ADS)

Para(polyphenylene sulfide) may be doped spontaneously and rapidly with nitrosyl salts (NOPF6, NOSbF6) from solution to yield an electrically conducting material (10-1ohm-1cm-1). The level of conductivity is primarily dependent on the extent of dopant incorporation, which in turn is determined by the polymer’s crystallinity; the more amorphous the polymer, the more dopant it takes up and the more conductive it becomes. The incorporation of dopants produces irreversible chemical changes in the polymer resulting in the deterioration of its mechanical properties.

Rubner, Michael; Cukor, Peter; Jopson, Harriet; Deits, Walter

1982-03-01

437

The Ortho:Para Ratio of H3+ in Diffuse Molecular Clouds  

NASA Astrophysics Data System (ADS)

Since its first interstellar detection in the mid 1990s, H3+ has proved to be a powerful probe of astrophysical conditions. In cold molecular clouds, only the lowest two rotational energy levels of H3+ are populated: the (J,K) = (1,1) para state and the (1,0) ortho state. The relative populations of these levels can be used to calculate an excitation temperature, Tex. In dense molecular clouds, Tex agrees well with the estimated cloud kinetic temperature. However, in diffuse molecular clouds, Tex is found to be 30 K, while the kinetic temperature, as determined from the excitation temperature T01 (given by the relative populations of the J = 0 and J = 1 rotational levels of H2) is on average 60-70 K in these environments. Because the (1,1) state of H3+ is the lower-energy state, this indicates that there is more para-H3+ in diffuse molecular clouds than would be expected based on the cloud kinetic temperature. To understand the excess para-H3+ (or the lower-than-expected Tex), we have constructed a chemical model that takes into account the nuclear spin dependence of H3+ formation, proton scrambling via collisions with H2, and dissociative recombination with electrons. At the heart of this model is the reaction H3+ + H2 ? H2 + H3+ , which can proceed by one of three pathways: the identity, proton hop, and hydrogen exchange. The branching fractions for the three pathways, Sid, Shop, and Sexch, influence the nature and extent of the proton scrambling. We use the microcanonical statistical model of Park and Light (J. Chem. Phys. 126, 044305, 1997) to calculate nuclear-spin-dependent rate coefficients that describe the extent of proton scrambling as a function of temperature and the aforementioned branching fractions. As a result, our model predicts, based on these parameters, what the observed Tex should be for a certain cloud kinetic temperature. Our model suggests that on its own, the H3+ + H2 reaction would effectively thermalize the ortho:para H3+ ratio (i.e., Tex = T01). However, dissociative recombination is taken into account, this thermalization is incomplete, and the resultant competition between thermalization and dissociative recombination seems to reproduce the astronomical observations for Sid ~ 0.8-0.9. However, the details of the spin-dependence of H3+ dissociative recombination are important, and at present, experimentally uncertain. More information about this process is needed to determine the validity of our modeling results.

Crabtree, Kyle N.; Indriolo, Nick; Kreckel, Holder; Tom, Brian A.; McCall, Benjamin J.

2010-11-01

438

On linear differential equations with variable coefficients involving a para-Grassmann variable  

NASA Astrophysics Data System (ADS)

Linear differential equations with constant coefficients involving a para-Grassmann variable have been considered recently in the work of Mansour and Schork [Symmetry, Integr. Geom.: Methods Appl. 5, 73 (2009)]. In the present paper, this treatment is extended to linear differential equations with variable coefficients. For the equation of first order, an explicit formula for the solution is given. For the equations of higher order, it is shown how the solutions may be determined in terms of the solutions of "ordinary" differential equations (i.e., involving only "bosonic" variables). Some examples of these differential equations are discussed and analogs for the trigonometric functions are introduced.

Mansour, Toufik; Schork, Matthias

2010-04-01

439

TAgentsP y PDP: propuestas para una plataforma de agentes en computacion ubicua  

Microsoft Academic Search

ser, presenta entornos saturados de dispositivos con capaci-dades de computaci'on y comunicaci'on que le proporcionan a los usuarios servicios ocultando la complejidad tecnol'ogi-ca subyacente. Nuestra l'inea de investigaci'on pretende po-tenciar el uso de la tecnolog'ia de agentes m'oviles en com-putaci'on ubicua para facilitar este objetivo. El trabajo que aqu'i presentamos se centra por un lado en proporcionar una plataforma de

Ma Celeste; Campo Vazquez; Carlos Garc; Florina Almenares; Mendoza Andres; Mar ´ in Lopez

440

Ortho-to-para ratio in interstellar water on the sightline toward Sagittarius B2(N).  

PubMed

The determination of the water ortho-to-para ratio (OPR) is of great interest for studies of the formation and thermal history of water ices in the interstellar medium and protoplanetary disk environments. We present new Herschel observations of the fundamental rotational transitions of ortho- and para-water on the sightline toward Sagittarius B2(N), which allow improved estimates of the measurement uncertainties due to instrumental effects and assumptions about the excitation of water molecules. These new measurements, suggesting a spin temperature of 24-32 K, confirm the earlier findings of an OPR below the high-temperature value on the nearby sightline toward Sagittarius B2(M). The exact implications of the low OPR in the galactic center molecular gas remain unclear and will greatly benefit from future laboratory measurements involving water freeze-out and evaporation processes under low-temperature conditions, similar to those present in the galactic interstellar medium. Given the specific conditions in the central region of the Milky Way, akin to those encountered in active Galactic nuclei, gas-phase processes under the influence of strong X-ray and cosmic ray ionization also have to be carefully considered. We summarize some of the latest laboratory measurements and their implications here. PMID:23656468

Lis, Dariusz C; Bergin, Edwin A; Schilke, Peter; van Dishoeck, Ewine F

2013-10-01

441

O-Methylation of Chlorinated para-Hydroquinones by Rhodococcus chlorophenolicus  

PubMed Central

Rhodococcus chlorophenolicus PCP-I, a degrader of polychlorinated phenols, guaiacols (2-methoxyphenols), and syringols (2,6-dimethoxyphenols), was shown to O-methylate the degradation intermediate, a chlorinated para-hydroquinone, into 4-methoxyphenol. O-methylation was constitutively expressed, whereas the degradation of chlorophenols and chlorohydroquinones was inducible in R. chlorophenolicus. The O-methylating reaction required two hydroxyl groups in positions para to each other. R. chlorophenolicus selectively methylated the hydroxyl group flanked by two chlorine substituents. Tetrachlorohydroquinone, trichlorohydroquinone, and 2,6-dichlorohydroquinone were methylated into tetrachloro-4-methoxyphenol, 2,3,5-trichloro-4-methoxyphenol, and 3,5-dichloro-4-methoxyphenol, respectively. Chlorohydroquinones with only one chlorine adjacent to a hydroxyl group were methylated only in trace amounts, and no metabolite was formed from hydroquinone. The degradation intermediates formed in hydroxylation of tetrachloroguaiacol and trichlorosyringol by R. chlorophenolicus were O-methylated into two isomeric trichlorodimethoxyphenols and two isomeric dichlorotrimethoxyphenols, respectively. R. chlorophenolicus also degraded the polychlorinated methylation products (tetrachlorinated and trichlorinated 4-methoxyphenols), but not mono- and dichlorinated 4-methoxyphenols. PMID:16347691

Häggblom, Max M.; Apajalahti, Juha H. A.; Salkinoja-Salonen, Mirja S.

1988-01-01

442

Transformando la Representación de los Datos para Mejorar el Clasificador Bayesiano Simple  

E-print Network

Abstract. El clasificador bayesiano simple se basa en la asunción de independencia entre los valores de los atributos dado el valor de la clase. Así pues, su efectividad puede decrecer en presencia de atributos interdependientes. En este artículo se presenta DGW (Dependency Guided Wrapper), un wrapper que utiliza la información acerca de las dependencias entre atributos para transformar la representación de los datos para mejorar la precisión del clasificador bayesiano simple. Este artículo presenta una serie de experimentos donde se compara las representaciones de datos obtenidas por el DGW contra las representaciones de datos obtenidas por 12 acercamientos previos, como son la construcción inductiva de productos cartesianos de atributos, y wrappers que realizan búsquedas de subconjuntos óptimos de atributos. Los resultados de los experimentos muestran que DGW genera representaciones nuevas de los datos que ayudan a mejorar significativamente la precisión del clasificador bayesiano simple más frecuentemente que cualquier otro acercamiento previo. Además, DGW es mucho más rápido que cualquier otro sistema en el proceso de transformación de la representación de los datos.

Jose Carlos Cortizo; Ignacio Giraldez; Mari Cruz Gaya; Selección De Atributos

443

The ortho : para ratio of H3+ in laboratory and astrophysical plasmas.  

PubMed

In diffuse molecular clouds, the nuclear spin temperature of H(3)(+) (approx. 30?K) is much lower than the cloud kinetic temperature (approx. 70?K). To understand this temperature discrepancy, we have measured the ratio of the hop to exchange pathways (?) in the H(3)(+) + H(2) --> H(2) + H(3)(+) reaction (which interconverts ortho- and para-H(3)(+)) using high-resolution spectroscopy of the ?(2) fundamental band of H(3)(+) in a hydrogenic plasma. We find that ? decreases from 1.6±0.1 at 350?K to its statistical value of 0.5±0.1 at 135?K. We use this result to model the steady-state chemistry of diffuse molecular clouds, finding good agreement with astronomical data provided the dissociative recombination rates of ortho- and para-H(3)(+) are equal and the identity branching fraction for the H(3)(+) + H(2) reaction is large. Our results highlight the need for further studies of the H(3)(+) + H(2) reaction as well as state-selective measurements of H(3)(+) dissociative recombination. PMID:23028153

Crabtree, Kyle N; McCall, Benjamin J

2012-11-13

444

Comportamiento Sexual y Autoeficacia para la Negociación de Sexo Más Seguro en Personas Heterosexuales  

PubMed Central

La autoeficacia se le ha identificado como uno de los factores que puede facilitar o dificultar llevar a cabo sexo más seguro. Estudios revelan que las personas que están el relaciones estables usan métodos de protección menos frecuente que quienes tienen parejas casuales. Realizamos un estudio con 447 personas heterosexuales activas sexualmente. Les administramos un cuestionario dirigido a medir el comportamiento sexual, el uso del condón masculino y la práctica de la masturbación mutua, y la autoeficacia para llevar a cabo estas conductas. Los resultados reflejan que los hombres están más activos sexualmente y que el uso del condón y la práctica de la masturbación mutua como alternativa de sexo más seguro es muy baja. En los casos donde se usa el condón esta práctica es realizada en su mayoría por las personas que se encuentran en una relación de pareja casual. No obstante, los/las participantes tienen altos niveles de autoeficacia hacia ambas prácticas. Aunque la autoeficacia es uno de los factores que incide en decidir llevar a cabo sexo más seguro, ésta no es suficiente para que esta meta se logre. PMID:22837585

Pérez-Jiménez, David; Santiago-Rivas, Marimer; Serrano-García, Irma

2012-01-01

445

Effects of acoustic feedback training in elite-standard Para-Rowing.  

PubMed

Abstract Assessment and feedback devices have been regularly used in technique training in high-performance sports. Biomechanical analysis is mainly visually based and so can exclude athletes with visual impairments. The aim of this study was to examine the effects of auditory feedback on mean boat speed during on-water training of visually impaired athletes. The German National Para-Rowing team (six athletes, mean  ± s, age 34.8 ± 10.6 years, body mass 76.5 ± 13.5 kg, stature 179.3 ± 8.6 cm) participated in the study. Kinematics included boat acceleration and distance travelled, collected with Sofirow at two intensities of training. The boat acceleration-time traces were converted online into acoustic feedback and presented via speakers during rowing (sections with and without alternately). Repeated-measures within-participant factorial ANOVA showed greater boat speed with acoustic feedback than baseline (0.08 ± 0.01 m·s(-1)). The time structure of rowing cycles was improved (extended time of positive acceleration). Questioning of athletes showed acoustic feedback to be a supportive training aid as it provided important functional information about the boat motion independent of vision. It gave access for visually impaired athletes to biomechanical analysis via auditory information. The concept for adaptive athletes has been successfully integrated into the preparation for the Para-Rowing World Championships and Paralympics. PMID:25105858

Schaffert, Nina; Mattes, Klaus

2015-02-01

446

The new ParaDIgm: IgM from bench to clinic  

PubMed Central

The inaugural IgM event entitled “The new ParaDIgm: IgM from bench to clinic” brought together the increasingly active and growing IgM antibody community to discuss recent advances and challenges facing the discovery and development of IgM antibody therapies and technologies. Researchers, clinicians and biomanufacturing experts delivered 21 talks on the basic science and isolation of IgM, upstream and downstream development, and formulation and clinical development of the molecules. Participants networked around topics aimed at exploring the full potential of IgM antibodies. The meeting was held at DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e. V. (Society for Chemical Engineering and Biotechnology), a non-profit scientific and technical society based in Frankfurt am Main, Germany. The meeting was sponsored by Patrys, Laureate Biopharma, Bio-Rad Laboratories, BIA Separations, Percivia and the Bio Affinity Company (BAC). The second New ParaDIgm: IgM from bench to clinic meeting, will be held on April 23–24, 2013 in Frankfurt, Germany. PMID:22864407

Hanala, Sherif

2012-01-01

447

Clinical aspects of para-tertiary-butylphenolformaldehyde resin (PTBP-FR) allergy.  

PubMed

Sensitization by para-tertiary-butylphenolformaldehyde resin (PTBP-FR), which is particularly useful as a leather glue, has been known for 30 years. We retrospectively studied the clinical aspects of those patients with a PTBP-FR allergy among 1966 patients in whom contact dermatitis was confirmed by patch testing. A positive patch test to PTBP-FR was present in 30 patients (1.5%), 24 of whom were women. Exposure to PTBP-FR as a cause of the dermatitis was "certain" in 7, "very likely" in 6 and "unclear" in 17. 67.7% of the patients had a multiple allergy. In 43.3% of the patients, a history of atopy was found. No clear association of PTBP-FR sensitization with allergies to phenolformaldehyde resin (P-FR) or free para-tertiary-butylphenol (PTBP) emerged in this group of 30 patients. This study supports the hypothesis that PTBP-FR and P-FR do not contain the same sensitizers. Follow-up of 26 of the 30 patients showed a favourable course, dependent on identification of the source of exposure, avoidance of further contact and absence of sensitization to multiple allergens. PMID:2533533

Geldof, B A; Roesyanto, I D; van Joost, T

1989-11-01

448

PFI-ZEKE (Pulsed Field Ionization-Zero Electron Kinetic Energy) para el estudio de iones  

NASA Astrophysics Data System (ADS)

Entre las áreas hacia donde ha evolucionado la Química en los últimos años están los estudios de sistemas con especies reactivas de alta energía y los dominados por fuerzas intermoleculares débiles, con energías de unas pocas kcal/mol. En efecto, el estudio de las propiedades de los iones, comenzando por su relación con la molécula neutra de la que procede, la energía de ionización, los estados vibracionales y rotacionales, energías de enlace de Van der Waals entre el ión y una amplia variedad de otras moléculas, sus confórmeros o isómeros y sus reacciones o semi-reacciones químicas están en la raíz de la necesidad de la espectroscopía conocida como PFI-ZEKE, Pulsed Field Ionization-Zero Electron Kinetic Energy. Entre las aplicaciones que requieren estos conocimientos se encuentran la generación de plasmas para la fabricación de semiconductores, memorias magnéticas, etc, así como los sistemas astrofísicos, la ionosfera terrestre, etc. La espectroscopía ZEKE es una evolución de las de fluorescencia inducida por láser, LIF, ionización multifotónica acrecentada por resonancia, REMPI, con uno y dos colores y acoplada a un sistema de tiempo de vuelo, REMPI-TOF-MS, y las espectroscopías de doble resonancia IR-UV y UV-UV. Sus espectros y la ayuda de cálculos ab inicio permite determinar las energías de enlace de complejos de van der Waals en estados fundamental y excitados, identificar confórmeros e isómeros, obtener energías de ionización experimentales aproximadas (100 cm-1) y otras variables de interés. Al igual que con LIF, REMPI y dobles resonancias, es posible utilizar muestras gaseosas, pero los espectros están muy saturados de bandas y su interpretación es difícil o imposible. Se evitan estas dificultades estudiando las moléculas o complejos en expansiones supersónicas, donde la T de los grados de libertad solo alcanzan unos pocos K. Para realizar experimentos de ZEKE hay que utilizar una propiedad recientemente descubierta, que va en contra de lo esperado en otros sistemas físicos y que consiste en que los altos estados Rydberg de átomos, moléculas y sus complejos de van der Waals (o de los iones) tienen tiempos de vida de centenas de ? s. En resumen, el experimento y la espectroscopía ZEKE consiste en excitar un átomo, molécula o cluster sucesivamente a dos estados excitados selectivos de manera que el final sea un estado Rydberg. A continuación se aplica un campo eléctrico variable que lo ioniza y después de un cierto retraso se aplica un campo eléctrico de extracción, tanto para el electrón como para el ión. El espectro de los iones, es un espectro ZEKE. Hay varias alternativas para hacer este último proceso. El estudio de la espectroscopía y propiedades de iones y sus clusters requiere el conocimiento detallado de la espectroscopía de la molécula neutra, los estados Rydberg, de los confórmeros y sus complejos. Todo ello implica el haber estudiado los sistemas por LIF, REMPI y doble resonancia (hole burning IR-UV, UV-UV). Además solo es posible interpretar los resultados y obtener la información contenida en los espectros con ayuda de cálculos cuánticos ab initio. Hasta el momento hemos aplicado tanto el ZEKE como el conjunto de técnicas mencionadas anteriormente, a varias molécula de interés químico general como anilina y sus derivados, así como sus complejos con agua y amoniaco. Sin embargo, el método es muy versátil y puede aplicarse a iones de átomos, iones múltiples, moléculas sencillas y sus clusters así como a sus semi-reacciones. Como ejemplo de uno de estos espectros PFI-ZEKE se presenta aquí el caso del amonibenzonitrilo, ABN y solamente en su estado fundamental. En la conferencia se presentarán espectros ZEKE del ABN y moléculas similares en estados vibracionales intermedios (islas de estabilidad), así como la determinación de potenciales de ionización precisos, energías de enlace de compuestos del ión con varios disolventes y otras propiedades de interés, discutiendo sus resultados.

Castaño, F.; Fernández, J. A.; Basterretxea, A. Longarte. F.; Sánchez Rayo, M. N.; Martínez, R.

449

ParaHox gene expression in larval and postlarval development of the polychaete Nereis virens (Annelida, Lophotrochozoa)  

PubMed Central

Background Transcription factors that encode ANTP-class homeobox genes play crucial roles in determining the body plan organization and specification of different organs and tissues in bilaterian animals. The three-gene ParaHox family descends from an ancestral gene cluster that existed before the evolution of the Bilateria. All three ParaHox genes are reported from deuterostomes and lophotrochozoans, but not to date from any ecdysozoan taxa, and there is evidence that the ParaHox genes, like the related Hox genes, were ancestrally a single chromosomal cluster. However, unlike the Hox genes, there is as yet no strong evidence that the ParaHox genes are expressed in spatial and temporal order during embryogenesis. Results We isolated fragments of the three Nereis virens ParaHox genes, then used these as probes for whole-mount in situ hybridization in larval and postlarval worms. In Nereis virens the ParaHox genes participate in antero-posterior patterning of ectodermal and endodermal regions of the digestive tract and are expressed in some cells in the segment ganglia. The expression of these genes occurs in larval development in accordance with the position of these cells along the main body axis and in postlarval development in accordance with the position of cells in ganglia along the antero-posterior axis of each segment. In none of these tissues does expression of the three ParaHox genes follow the rule of temporal collinearity. Conclusion In Nereis virens the ParaHox genes are expressed during antero-posterior patterning of the digestive system (ectodermal foregut and hindgut, and endodermal midgut) of Nereis virens. These genes are also expressed during axial specification of ventral neuroectodermal cell domains, where the expression domains of each gene are re-iterated in each neuromere except for the first parapodial segment. These expression domains are probably predetermined and may be directed on the antero-posterior axis by the Hox genes, whose expression starts much earlier during embryogenesis. Our results support the hypothesis that the ParaHox genes are involved in antero-posterior patterning of the developing embryo, but they do not support the notion that these genes function only in the patterning of endodermal tissues. PMID:18510732

Kulakova, Milana A; Cook, Charles E; Andreeva, Tatiana F

2008-01-01

450

Compilação de dados atômicos e moleculares do UV ao IV próximo para uso em síntese espectral  

NASA Astrophysics Data System (ADS)

Espectros sintéticos são utéis em uma grande variedade de aplicações, desde análise de abundâncias em espectros estelares de alta resolução ao estudo de populações estelares em espectros integrados. A confiabilidade de um espectro sintético depende do modelo de atmosfera adotado, do código de formação de linhas e da qualidade dos dados atômicos e moleculares que são determinantes no cálculo das opacidades da fotosfera. O nosso grupo no departamento de Astronomia no IAG tem utilizado espectros sintéticos há mais de 15 anos, em aplicações voltadas principalmente para a análise de abundâncias de estrelas G, K e M e populações estelares velhas. Ao longo desse tempo, as listas de linhas vieram sendo construídas e atualizadas continuamente, e alguns acréscimos recentes podem ser citados: Castilho (1999, átomos e moléculas no UV), Schiavon (1998, bandas moleculares de TiO) e Melendez (2001, átomos e moléculas no IV próximo). Com o intuito de calcular uma grade de espectros do UV ao IV próximo para uso no estudo de populações estelares velhas, se fazia necessário compilar e homogeneizar as diversas listas em apenas uma lista atômica e uma molecular. Nesse processo, a nova lista compilada foi correlacionada com outras bases de dados (NIST, Kurucz Database, O' Brian et al. 1991) para atualização dos parâmetros que caracterizam a transição atômica (comprimento de onda, log gf e potencial de excitação). Adicionalmente as constantes de interação C6 foram calculadas segundo a teoria de Anstee & O'Mara (1995) e artigos posteriores. As bandas moleculares de CH e CN foram recalculadas com o programa LIFBASE (Luque & Crosley 1999). Nesse poster estão detalhados os procedimentos citados acima, as comparações entre espectros calculados com as novas listas e espectros observados em alta resolução do Sol e de Arcturus, e uma análise do impacto decorrente da utilização de diferentes modelos de atmosfera no espectro sintético. Ao final, temos uma lista de linhas atômicas com mais de 24.000 linhas e uma lista molecular com as moléculas CN, CH, OH, NH, MgH, C2, TiO Gama, CO, FeH, adequadas ao estudo de estrelas G, K e M e populações estelares velhas.

Coelho, P.; Barbuy, B.; Melendez, J.; Allen, D. M.; Castilho, B.

2003-08-01

451

Observation of crystallization slowdown in supercooled para-hydrogen and ortho-deuterium quantum liquid mixtures  

E-print Network

We report a quantitative experimental study of the crystallization kinetics of supercooled quantum liquid mixtures of para-hydrogen (pH$_2$) and ortho-deuterium (oD$_2$) by high spatial resolution Raman spectroscopy of liquid microjets. We show that in a wide range of compositions the crystallization rate of the isotopic mixtures is significantly reduced with respect to that of the pure substances. To clarify this behavior we have performed path-integral simulations of the non-equilibrium pH$_2$-oD$_2$ liquid mixtures, revealing that differences in quantum delocalization between the two isotopic species translate into different effective particle sizes. Our results provide first experimental evidence for crystallization slowdown of quantum origin, offering a benchmark for theoretical studies of quantum behavior in supercooled liquids.

Matthias Kühnel; José M. Fernández; Filippo Tramonto; Guzmán Tejeda; Elena Moreno; Anton Kalinin; Marco Nava; Davide E. Galli; Salvador Montero; Robert E. Grisenti

2014-10-10

452

Development of a para-orthohydrogen catalytic converter for a solid hydrogen cooler  

NASA Technical Reports Server (NTRS)

Design features of a tested catalytic converter for altering vented cryogenic parahydrogen used as a coolant on spacecraft into a para-ortho equilibrium for channeling to other cooling functions are described. The hydrogen is expected to be stored in either liquid or solid form. A high surface area Ni-on-Si catalyst was selected for tests at an operating pressure of 2 torr at a ratio of 1000 gr catalyst for a gr/sec hydrogen flow. Cylindrical and radial flow geometries were tried and measurements centered on the converter efficiencies at different operating temperatures when the converter was placed in the vent line of the H2 cooler. Efficiencies ranging from 10-100 percent were obtained for varying flow rates. Further testing is necessary to characterize the converter performance under a wider range of operating temperatures and environments.

Nast, T. C.; Hsu, I. C.

1984-01-01

453

Genomic organization of Hox and ParaHox clusters in the echinoderm, Acanthaster planci.  

PubMed

The organization of echinoderm Hox clusters is of interest due to the role that Hox genes play in deuterostome development and body plan organization, and the unique gene order of the Hox complex in the sea urchin Strongylocentrotus purpuratus, which has been linked to the unique development of the axial region. Here, it has been reported that the Hox and ParaHox clusters of Acanthaster planci, a corallivorous starfish found in the Pacific and Indian oceans, generally resembles the chordate and hemichordate clusters. The A. planci Hox cluster shared with sea urchins the loss of one of the medial Hox genes, even-skipped (Evx) at the anterior of the cluster, as well as organization of the posterior Hox genes. genesis 52:952-958, 2014. © 2014 Wiley Periodicals, Inc. PMID:25394327

Baughman, Kenneth W; McDougall, Carmel; Cummins, Scott F; Hall, Mike; Degnan, Bernard M; Satoh, Nori; Shoguchi, Eiichi

2014-12-01

454

Cholecystocutaneous fistula: an unusual complication of a para-umbilical hernia repair.  

PubMed

This case describes a 94-year-old woman who presented 2?years postsutured para-umbilical hernia repair with a painful black lump protruding through her scar with blood stained discharge. This was initially thought to be either ischaemic bowel secondary to strangulated incisional hernia or a large organised haematoma. An urgent CT scan was performed following which the patient passed two large calculi and bile-stained fluid spontaneously through the wound, making the diagnosis somewhat clearer. The scan revealed an incisional hernia containing the gallbladder and two large calculi at the skin surface and an incidental large caecal cancer with surrounding lymphadenopathy. Frail health and the incidental finding of a colon cancer rendered invasive surgical management inappropriate. Therefore, she was managed conservatively with antibiotics. A catheter was inserted into the fistula tract to allow free drainage and alleviate pressure-related symptoms. The patient was discharged following a multidisciplinary team discussion. PMID:24862413

Dixon, Steven; Sharma, Mitesh; Holtham, Stephen

2014-01-01

455

La Observación Sistemática de Vecindarios: El caso de Chile y sus perspectivas para Trabajo Social  

PubMed Central

El estudio acerca de las características de los vecindarios y sus efectos sobre las personas ha llegado a ser un área de creciente atención por parte de investigadores de diversas disciplinas en países desarrollados. Aunque actualmente existen diversas metodologías para estudiar efectos del vecindario, una de las más utilizadas es la Observación Sistemática de Vecindarios –Systematic Social Observation SSO, en inglés—porque permite recolectar información acerca de diversas características del entorno físico, social, ambiental y económico de los vecindarios donde se aplica. El objetivo de este artículo es (i) dar a conocer sumariamente algunas investigaciones influyentes sobre efectos del vecindario en Estados Unidos, ii) describir cómo se diseñó e implementó la Observación Sistemática de Vecindarios en la ciudad de Santiago de Chile, iii) señalar algunos facilitadores y obstaculizadores de la implementación del proyecto y, finalmente iv) enunciar posibles contribuciones y limitaciones que esta metodología ofrecería al trabajo social en Chile. PMID:24791060

Sanhueza, Guillermo E.; Delva, Jorge; Andrade, Fernando H.; Grogan-Kaylor, Andrew; Bares, Cristina; Castillo, Marcela

2012-01-01

456

Food for Life/Comida para la Vida: Creating a Food Festival to Raise Diabetes Awareness  

PubMed Central

African and Latino Americans have higher rates of diabetes and its complications than White Americans. Identifying people with undiagnosed diabetes and helping them obtain care can help to prevent complications and mortality. To kick off a screening initiative, our community-academic partnership created the “Food for Life Festival,” or “Festival Comida para la Vida.” This article will describe the community’s perspective on the Festival, which was designed to screen residents, and demonstrate that eating healthy can be fun, tasty, and affordable in a community-centered, culturally consonant setting. More than 1,000 residents attended the event; 382 adults were screened for diabetes, and 181 scored as high risk. Fifteen restaurants distributed free samples of healthy versions of their popular dishes. Community residents, restaurateurs, and clinicians commented that the event transformed many of their preconceived ideas about healthy foods and patient care. PMID:20097997

Lancaster, Kristie; Walker, Willie; Vance, Thomas; Kaskel, Phyllis; Arniella, Guedy; Horowitz, Carol

2012-01-01

457

Approaches to Modeling Diffuse Scattering from Molecular Crystals: Para-Terphenyl (C18H14)  

NASA Astrophysics Data System (ADS)

Diffuse scattering is a probe of the local correlations in a crystal, whereas Bragg peaks are descriptive of the average long-range ordering. The long-range average is the result of numerous local configurations the population of which cannot be determined from the Bragg peaks. Diffuse scattering can examine this population. This is particularly the case when making use of the three-dimensional distribution of diffuse scattering from single crystals. However, diffuse scattering is very weak and broad and is often of similar intensity to the experimental background, which makes data collection demanding. Disorder can also take many forms and local configurations are not constrained by the average crystallographic symmetry. Here, three approaches to the modeling of diffuse scattering from molecular crystals will be discussed. All three approaches are based on a Monte Carlo (MC) simulation. As an example, the modeling of neutron diffuse scattering from para-terphenyl ( PTP, C18H14) will be described.

Goossens, D. J.; Welberry, T. R.

2010-05-01

458

Left hepatic vein injury during laparoscopic antireflux surgery for large para-oesophageal hiatus hernia  

PubMed Central

Although the advent of laparoscopic fundoplication has increased both patient and physician acceptance of antireflux surgery, it has become apparent that the laparoscopic approach is associated with an increased risk of some complications and as well as the occurrence of new complications specific to this approach. One such complication occurred in our patient who had intra-operative left hepatic vein injury during laparoscopic floppy Nissen fundoplication for large para-oesophageal rolling hernia. With timely conversion to open procedure, the bleeding was controlled and the antireflux and the procedure were completed uneventfully. However, this suggests that even with an experience in advanced laparoscopy surgery, complications can occur. Clear understanding of the normal and pathologic anatomy and its variations facilitates laparoscopic surgery and should help the surgeon avoid complications. The incidence of some of these complications decreases as surgeons gain experience; however, new complications can arise due to the increase in such procedures. PMID:20040801

Nagpal, Anish P; Soni, Harshad; Haribhakti, Sanjiv P

2009-01-01

459

El Proyecto Sismico "LARSE" - Trabajando Hacia un Futuro con Mas Seguridad para Los Angeles  

USGS Publications Warehouse

La region de Los Angeles contiene una red de fallas activas, incluyendo muchas fallas por empuje que son profundas y no rompen la superficie de la tierra. Estas fallas ocultas incluyen la falla anteriormente desconocida que fue responsable por la devastacion que ocurrio durante el terremoto de Northridge en enero de 1994, el terremoto mas costoso en la historia de los Estados Unidos. El Experimento Sismico en la Region de Los Angeles (Los Angeles Region Seismic Experiment, LARSE), esta localizando los peligros ocultos de los terremotos debajo de la region de Los Angeles para mejorar la construccion de las estructuras que pueden apoyar terremotos que son inevitables en el futuro, y que ayudaran a los cientificos determinar donde occurira el sacudimento mas fuerte y poderoso.

Henyey, Thomas L.; Fuis, Gary S.; Benthien, Mark L.; Burdette, Thomas R.; Christofferson, Shari A.; Clayton, Robert W.; Criley, Edward E.; Davis, Paul M.; Hendley, James W., II; Kohler, Monica D.; Lutter, William J.; McRaney, John K.; Murphy, Janice M.; Okaya, David A.; Ryberg, Trond; Simila, Gerald W.; Stauffer, Peter H.

1999-01-01

460

Salud para su Corazón: a community-based Latino cardiovascular disease prevention and outreach model.  

PubMed

Cardiovascular disease (CVD) is the leading cause of death for Latinos living in the United States. This population is generally unaware of important lifestyle or behavioral changes that can prevent CVD. The National Heart, Lung, and Blood Institute (NHLBI) designed and implemented Salud para su Corazón (Health for Your Heart), a culturally appropriate, community-based, theory-driven intervention model. NHLBI's goals were: (1) to design an intervention model appropriate to Latino populations; (2) to pilot test the model in a specific community with the objectives of increasing awareness about heart disease, raising knowledge about CVD prevention, and promoting heart-healthy lifestyles; and (3) to disseminate the model and the materials developed to other communities with similar needs. An agency-community partnership, under the leadership of the Community Alliance for Heart Health, guided all stages of the community intervention project. The multimedia bilingual community intervention included television telenovela format public service announcements (PSAs), radio programs, brochures, recipe booklets, charlas, a promotores training manual, and motivational videos. An evaluation survey assessed the impact of the intervention. A pre-post intervention survey was conducted with more than 300 participants, and results showed that the respondents were substantially more aware of risk factors for CVD, and had greatly increased their knowledge of ways to prevent heart disease. Dissemination efforts have resulted in numerous requests by health organizations, universities, and health maintenance organizations (HMOs) for educational materials and communication strategies produced by Salud para su Corazón. In addition, Univision, the largest Spanish-language broadcast television network, is airing the initiative's PSAs. Also, training seminars for promotores are being conducted in different regions of the United States, and several locations are planning to replicate this study. PMID:10555925

Alcalay, R; Alvarado, M; Balcazar, H; Newman, E; Huerta, E

1999-10-01

461

PREVENCION DE VIH PARA MUJERES HISPANAS DE 50 AÑOS Y MÁS  

PubMed Central

Introducción Las mujeres Hispanas de 50 años y más (MHC) son una minoría en Estados Unidos que está a elevado riesgo de adquirir VIH y son el grupo menos estudiado en lo que respecta a salud, características sociales y de comportamiento sexual. Objetivo Investigar los factores que incrementan el riesgo de VIH en las MHC con el propósito de desarrollar o adaptar una intervención apropiada para la “edad y la cultura "de este grupo de mujeres. Metodología Estudio descriptivo de corte transversal con una muestra de 50 MHC, sexualmente activas y que residían en Miami, Florida, Estados Unidos. Se utilizó un cuestionario estructurado administrado por entrevistadores entrenados y bilingües (inglés/español). Las participantes fueron reclutadas en diferentes lugares en el Sur de Florida. Para el análisis de los datos se utilizó estadística descriptiva, tanto medidas de tendencia central como medidas de dispersión. Resultados La edad promedio de las MHC fue de 55,7 ± 6 años (rango 50–76 años). Todas las MHC estaban en la menopausia. Prevención del VIH Las MHC reportaron niveles medios de conocimientos sobre VIH y comunicación con la pareja. En la muestra se reportó la presencia de síntomas depresivos, violencia en la pareja, actitudes negativas hacia las personas viviendo con VIH y baja percepción de riesgo de adquirir VIH. Las MHC mencionaron necesidades de aprendizaje en tópicos relacionados con prevención de VIH y cambios de la edad. Conclusión Las MHC están a riesgo de adquirir VIH y tienen necesidades especiales en términos de educación sobre prevención de VIH. PMID:25242862

Villegas, N.; Cianelli, R.; Ferrer, L.; Kaelber, L.; Peragallo, N.; Yaya, Alexandra O.

2012-01-01

462

Evaluation of para-dichlorobenzene emissions from solid moth repellant as a source of indoor air pollution  

SciTech Connect

The paper reports results of dynamic and static chamber tests to evaluate para-dichlorobenzene emission rates from mothcakes. The data were analyzed by a model that assumes that the emission rate is controlled by gas-phase mass transfer. Results indicate that the para-dichlorobenzene emission from mothcakes is a temperature-sensitive sublimation process. Full-scale house tests were also conducted to measure mass transfer coefficients based on the model developed. The values of the mass transfer coefficient obtained are very comparable to those estimated by theoretical heat transfer studies.

Chang, J.C.S.; Krebs, K.A.

1992-01-01

463

A kinetic method for para -nitrophenol determination based on its inhibitory effect on the catalatic reaction of catalase  

Microsoft Academic Search

The inhibitory effect of para-nitrophenol on the catalytic reaction of catalase was investigated. Michaelis-Menten kinetic parameters were determined from\\u000a Lineweaver-Burk plots obtained in the absence or in the presence of the inhibitor. The inhibitor pattern, revealed by the\\u000a Lineweaver-Burk plots, suggested a fully mixed inhibition mechanism. Spectrophotometric monitoring of the indicator reaction:\\u000a $$H_2 O_2 \\\\xrightarrow{{catalase,para - nitrophenol}}H_2 O + \\\\tfrac{1}{2}O_2

Claudia Mure?anu; Lucian Copolovici; Florina Pogùacean

2005-01-01

464

-REDES Y TELECOMUNICACIONES PARA PASES EN DESARROLLO No es previsible que sea necesaria una adaptacin de alumnos del Mster Oficial en  

E-print Network

- REDES Y TELECOMUNICACIONES PARA PAÍSES EN DESARROLLO No es previsible que sea necesaria una adaptación de alumnos del Máster Oficial en Redes de Telecomunicación para Países en Desarrollo hacia el nuevo título de Máster Universitario en Redes de Telecomunicación para Países en Desarrollo. Las razones

Rey Juan Carlos, Universidad

465

Biradical thermochemistry from collision-induced dissociation threshold energy measurements. Absolute heats of formation of ortho-, meta-, and para-benzyne  

Microsoft Academic Search

The absolute heats of formation of 1,2-, 1,3-, and 1,4-dehydrobenzene (ortho, meta-, and para-benzyne) have been determined from measurements of the threshold energies for collision-induced dissociation (CID) of ortho, meta-, and para-chlorophenyl anions in a flowing afterglow-triple quadrupole apparatus. The 298 K heats of formation for ortho-, meta-, and para-benzyne derived in this manner are 106.6 [+-] 3.0, 122.0 [+-

Paul G. Wenthold; Robert R. Squires

1994-01-01

466

Abono para la planta medicinal Cobra fuerza en la Isla el estudio del valor teraputico de la flora tropical.  

E-print Network

que "muchas plantas americanas (como el tabaco, que se preparaba de diferentes maneras), eran de a otros colegas e investigadores de la Escuela de Farmacia. Entre ellos, figuran Ana Vélez, Ricardo pasos para que este logre la acreditación de la Asociación Americana de Museos. Jardín con historia A su

Quirk, Gregory J.

467

A catalytic and tert-butoxide ion-mediated amidation of aldehydes with para-nitro azides.  

PubMed

We report here a new catalytic reaction in which, para-nitro azides are acylated by aldehydes to produce amides and molecular nitrogen in a single step. The transformation is believed to proceed via an electron transfer process mediated by the tert-butoxide ion, and catalysed by a thiazolium salt derived species. PMID:23443044

Carbone, Giorgio; Burnley, James; Moses, John E

2013-04-01

468

TOXICOKINETICS AND STRUCTURE-ACTIVITY RELATIONSHIPS OF NINE PARA-SUBSTITUTED PHENOLS IN RAT EMBRYOS IN VITRO  

EPA Science Inventory

The purpose of this study was to examine the pharmacokinetics of embryo uptake following exposure to a variety of related chemicals in rodent embryo culture. he uptake of nine radiolabeled para-substituted phenols by day 10 (9-13 somite stage) rat embryos in vitro was determined ...

469

Mecanismo de encaminamiento y asignacin de longitud de onda Basado en Prediccin para Redes de Transporte ptico  

E-print Network

Mecanismo de encaminamiento y asignación de longitud de onda Basado en Predicción para Redes de, pareta, jordid} @ac.upc.es Resumen En redes de transporte óptico los algoritmos de encaminamiento y estado de la red. Debido a diferentes factores, en redes altamente dinámicas esta información de estado

Politècnica de Catalunya, Universitat

470

TRANSNACIONALISMO E INCORPORACIÓN LABORAL DE MIGRANTES MEXICANOS EN ESTADOS UNIDOS Y LAS PERSPECTIVAS DE ASCENSO SOCIOECONÓMICO PARA SUS HIJOS  

Microsoft Academic Search

A lo largo de casi todo el siglo XX, en Estados Unidos prevaleció la idea de que los in- migrantes con bajos niveles de capacitación, lógicamente, ocuparían los peldaños más bajos de la escala ocupacional y salarial, pero que, dadas las oportunidades exis- tentes en el país, sus hijos tendrían muchas posibilidades para incorporarse a los estratos medios. A principios

Elaine Levine

471

Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicacin" es posible a largo plazo  

E-print Network

1 Malaria: a un paso del fin Para el investigador Quique Bassat hablar de "erradicación" es posible a largo plazo "Tras un fuerte ataque de malaria la persona se convierte en una piltrafa humana, yace. Según la OMS, la malaria, conocida también como paludismo, afecta cada año a unos 210 millones de

Geffner, Hector

472

Desenvolvimento Computacional para Observaes Astronmicas Remotas Ana Lcia da Silva Beraldo1, Andr de Castro Milone2  

E-print Network

Desenvolvimento Computacional para Observações Astronômicas Remotas Ana Lúcia da Silva Beraldo1 executada tanto em ambiente Linux como Windows. Atualmente, o Sistema está sendo aprimorado por Ana Lúcia e velocidade do vento. Luneta Meade DSI Pro (campo 3,8º x 2,7º). Focalizador automatizado. T

473

EFECTOS DE LA LIBERALIZACIÓN COMERCIAL: UN ANÁLISIS DE EQUILIBRIO PARCIAL PARA EL SECTOR DE ARROZ EN COLOMBIA  

Microsoft Academic Search

Mediante el análisis de cointegración y el modelo de vector de corrección de errores (VEC) se estimó el sistema de ecuaciones de oferta, demanda y precio del arroz blanco para Colombia, en el periodo comprendido entre 1970 – 2004. La demanda estimada muestra los signos esperados y es inelástica con respecto al precio del arroz, al ingreso disponible, al precio

Victor Dulio Chique Acero; Ramón Rosales Álvarez; Henry Samacá Prieto

2006-01-01

474

Theoretical Study of the Mechanism Behind the para-Selective Nitration of Toluene in Zeolite H-Beta  

Microsoft Academic Search

Periodic density functional theory calculations were performed to investigate the origin of the favorable para-selective nitration of toluene exhibited by zeolite H-beta with acetyl nitrate nitration agent. Energy calculations were performed for each of the 32 crystallographically unique Bronsted acid sites of a beta polymorph B zeolite unit cell with multiple Bronsted acid sites of comparable stability. However, one particular

Amity Andersen; Niranjan Govind; Lalitha Subramanian

2011-01-01

475

Theoretical study of the mechanism behind the para-selective nitration of toluene in zeolite H-Beta  

Microsoft Academic Search

Periodic density functional theory calculations were performed to investigate the origin of the favourable para-selective nitration of toluene exhibited by zeolite H-beta with acetyl nitrate nitration agent. Energy calculations were performed for each of the 32 crystallographically unique Brønsted acid sites of a beta polymorph B zeolite unit cell with multiple Brønsted acid sites of comparable stability. However, one particular

Amity Andersen; Niranjan Govind; Lalitha Subramanian

2008-01-01

476

COMERCIO DE FAUNA EN COLOMBIA E INFORMACIÓN OCULTA: NUEVOS RETOS EN LA REGULACIÓN PARA SU USO SOSTENIBLE  

Microsoft Academic Search

Este artículo analiza el problema al que puede enfrentarse la zoocría en la producción y comercialización de fauna bajo ciertas condiciones relacionadas con los costos. Considerando el proceso actual de trámites legales y de regulación, es posible que los zoocriaderistas consideren actuar ilegalmente para mejorar sus beneficios, extrayendo fauna del medio natural y comercializándola como propia, generando mayor presión sobre

Myriam Liliana Rivera Virgüez

2005-01-01

477

INSCRIES PARA O PROCESSO SELETIVO DE INGRESSO AO PROGRAMA DE PS-GRADUAO EM CINCIAS BIOLGICAS (ZOOLOGIA) DO  

E-print Network

estrangeiro] e CPF). Os candidatos ao doutorado que já possuírem título de mestre deverão também entregar por vídeo conferência para candidatos de outras cidades do Brasil e do exterior. Nesse caso, a CCP

Morandini, Andre C.

478

Identificación de oportunidades de mercado y mercadeo con un Enfoque Multi - Cadena para productos agroforestales de Alto Beni, Bolivia  

Microsoft Academic Search

Este estudio procura brindar oportunidades de diversificación a los productores cacaoteros de Alto Beni, Bolivia. Los productores cacaoteros se suman en 800 familias afiliadas a la cooperativa El Ceibo, que ha estado brindando facilidades para el acopio y la agregación de valor al cacao, pero que sin embargo, no ha logrado lanzar otros productos que puedan hacerle frente a variantes

Julio Cesar Muñoz Espinoza

479

Oportunidades, desafíos y barreras de la movilidad laboral en Colombia: reflexiones para la población en pobreza extrema y moderada  

Microsoft Academic Search

En este documento se estudian los flujos y determinantes de la movilidad laboral en Colombia, haciendo énfasis en la población en pobreza extrema y moderada. Con base en la información de las Encuestas de Hogares para los años 1995, 2000 y 2006 se calculan matrices de transición entre diferentes ocupaciones (asalariado formal, asalariado informal, cuenta propia y empleador). Los resultados

Mauricio Santa María S; Carlos Felipe Prada L; Ana Virginia Mujica P

2009-01-01

480

El Vicerrectorado de Relaciones Internacionales presenta las convocatorias de Movilidad Internacional del curso 2012/2013 para PAS,  

E-print Network

El Vicerrectorado de Relaciones Internacionales presenta las convocatorias de Movilidad apuesta estratégica que fomente la movilidad internacional de la comunidad universitaria, el movilidad internacional previstas para el próximo curso 2012/2013. Personal UA PDI.- Convocatoria Erasmus

Escolano, Francisco

481

CIENCIA PARA NINOS Y JVENES El presente artculo abre esta seccin de Educacin Qumica.No cabe duda que la  

E-print Network

CIENCIA PARA NINOS Y J�VENES El presente artículo abre esta sección de Educación Química.No cabe duda que la educación elemental y secundaria sobre las ciencias merecen una atención primordial. Tal

Talanquer, Vicente A.

482

Theoretical Study of the Mechanism Behind the para-Selective Nitration of Toluene in Zeolite H-Beta  

SciTech Connect

Periodic density functional theory calculations were performed to investigate the origin of the favorable para-selective nitration of toluene exhibited by zeolite H-beta with acetyl nitrate nitration agent. Energy calculations were performed for each of the 32 crystallographically unique Bronsted acid sites of a beta polymorph B zeolite unit cell with multiple Bronsted acid sites of comparable stability. However, one particular aluminum T-site with three favorable Bronsted site oxygens embedded in a straight 12-T channel wall provides multiple favorable proton transfer sites. Transition state searches around this aluminum site were performed to determine the barrier to reaction for both para and ortho nitration of toluene. A three-step process was assumed for the nitration of toluene with two organic intermediates: the pi- and sigma-complexes. The rate limiting step is the proton transfer from the sigma-complex to a zeolite Bronsted site. The barrier for this step in ortho nitration is shown to be nearly 2.5 times that in para nitration. This discrepancy appears to be due to steric constraints imposed by the curvature of the large 12-T pore channels of beta and the toluene methyl group in the ortho approach that are not present in the para approach.

Andersen, Amity; Govind, Niranjan; Subramanian, Lalitha

2011-11-28

483

Estudios de la Facultad de Derecho Informacin sobre PREINSCRIPCIN y MATRCULA para el curso 2014-2015  

E-print Network

Estudios de la Facultad de Derecho Información sobre PREINSCRIPCI�N y MATRÍCULA para el curso 2014 · DERECHO · DERECHO-ADE (DADE) · DERECHO-CRIMINOLOGÍA (DECRIM) · GESTI�N Y ADMINISTRACI�N P�BLICA Universitario en Derecho Ambiental y de la Sostenibilidad · Doctorado en Derecho · Curso de experto en Derecho

Escolano, Francisco

484

Para informacin adicional: 1-866-4-USWAGE(1-866-487-9243) TTY: 1-877-889-5627  

E-print Network

agricultura. Para más información visite el sitio del Internet YouthRules! en la dirección www y las islas Marianas del Norte. · Si la ley estatal requiere un salario mínimo más alto, tal salario

Fraden, Seth

485

Evoluindo para uma Arquitetura de Groupware Baseada em Componentes: o Estudo de Caso do Learningware AulaNet  

E-print Network

Evoluindo para uma Arquitetura de Groupware Baseada em Componentes: o Estudo de Caso do}@inf.puc-rio.br;abraposo@tecgraf.puc-rio.br Abstract. Groupware must be flexible in order to satisfy the different characteristics and the continuous as a basis for building different types of groupware. It ensues in the new AulaNet architecture

Barbosa, Alberto

486

PLASMA CLEARANCE OF VITELLOGENIN IN SHEEPSHEAD MINNOWS AFTER CESSATION OF EXPOSURE TO 17BETA-ESTRADIOL AND PARA-NONYLPHENOL  

EPA Science Inventory

Two experiments were performed to determine the rate of vitellogenin plasma accumulation and clearance in male sheepshead minnows (Cyprinodon variegatus) during and after exposure to either 17b-estradiol (E2) or para-nonylphenol (p-NP). Adult fish were continuously exposed to aqu...

487

Equilibrium (a), (b) and para-equilibrium (c), (d) phase diagrams for the two steels received from POSCO  

E-print Network

Equilibrium (a), (b) and para-equilibrium (c), (d) phase diagrams for the two steels received from POSCO 1000 1200 1400 1600 1800 0 20 40 60 80 100 35 wt.% (a) DT2_P: Equilibrium Amountofphase_P: Equilibrium Amountofphase/wt% Temperature / K Austenite ferrite Liquid Cementite Ferrite 51 wt

Cambridge, University of

488

Glen Biotech SL, empresa del Parque Cientfico de Alicante, obtiene una ayuda CDTI para su proyecto de I+D  

E-print Network

Glen Biotech SL, empresa del Parque Científico de Alicante, obtiene una ayuda CDTI para su proyecto de I+D Alicante, 6 de julio de 2011 GLEN BIOTECH SL, empresa de base tecnológica (EBT) del Parque a 400.000 . Glen Biotech SL es la primera EBT de la Universidad de Alicante (UA) y ha sido creada

Escolano, Francisco

489

Significado de los cambios en el cuello uterino: Guía para la salud de la mujer-epub  

Cancer.gov

Explica los pasos que deben seguirse después de un resultado anormal en una prueba de Pap o del VPH, así como las formas de diagnosticar y tratar las afecciones en el cuello uterino. También contiene información sobre las pautas para los exámenes de detección y las vacunas contra el VPH.

490

Significado de los cambios en el cuello uterino: Guía para la salud de la mujer-mobi  

Cancer.gov

Explica los pasos que deben seguirse después de un resultado anormal en una prueba de Pap o del VPH, así como las formas de diagnosticar y tratar las afecciones en el cuello uterino. También contiene información sobre las pautas para los exámenes de detección y las vacunas contra el VPH.

491

Estudio para la prevención del cáncer necesita voluntarias: El Estudio del Tamoxifeno y Raloxifeno (STAR) se realiza en Norteamérica  

Cancer.gov

El Estudio del Tamoxifeno y Raloxifeno (STAR, por sus siglas en inglés), uno de los estudios más importantes realizados para la prevención del cáncer del seno, está ahora reclutando voluntarias en más de 400 centros en los Estados Unidos, Puerto Rico y Canadá.

492

Conservation of ParaHox genes' function in patterning of the digestive tract of the marine gastropod Gibbula varia  

PubMed Central

Background Presence of all three ParaHox genes has been described in deuterostomes and lophotrochozoans, but to date one of these three genes, Xlox has not been reported from any ecdysozoan taxa and both Xlox and Gsx are absent in nematodes. There is evidence that the ParaHox genes were ancestrally a single chromosomal cluster. Colinear expression of the ParaHox genes in anterior, middle, and posterior tissues of several species studied so far suggest that these genes may be responsible for axial patterning of the digestive tract. So far, there are no data on expression of these genes in molluscs. Results We isolated the complete coding sequences of the three Gibbula varia ParaHox genes, and then tested their expression in larval and postlarval development. In Gibbula varia, the ParaHox genes participate in patterning of the digestive tract and are expressed in some cells of the neuroectoderm. The expression of these genes coincides with the gradual formation of the gut in the larva. Gva-Gsx patterns potential neural precursors of cerebral ganglia as well as of the apical sensory organ. During larval development this gene is involved in the formation of the mouth and during postlarval development it is expressed in the precursor cells involved in secretion of the radula, the odontoblasts. Gva-Xolx and Gva-Cdx are involved in gut patterning in the middle and posterior parts of digestive tract, respectively. Both genes are expressed in some ventral neuroectodermal cells; however the expression of Gva-Cdx fades in later larval stages while the expression of Gva-Xolx in these cells persists. Conclusions In Gibbula varia the ParaHox genes are expressed during anterior-posterior patterning of the digestive system. This colinearity is not easy to spot during early larval stages because the differentiated endothelial cells within the yolk permanently migrate to their destinations in the gut. After torsion, Gsx patterns the mouth and foregut, Xlox the midgut gland or digestive gland, and Cdx the hindgut. ParaHox genes of Gibbula are also expressed during specification of cerebral and ventral neuroectodermal cells. Our results provide additional support for the ancestral complexity of Gsx expression and its ancestral role in mouth patterning in protostomes, which was secondarily lost or simplified in some species. PMID:20624311

2010-01-01

493

A remarkably stable TipE gene cluster: evolution of insect Para sodium channel auxiliary subunits  

PubMed Central

Background First identified in fruit flies with temperature-sensitive paralysis phenotypes, the Drosophila melanogaster TipE locus encodes four voltage-gated sodium (NaV) channel auxiliary subunits. This cluster of TipE-like genes on chromosome 3L, and a fifth family member on chromosome 3R, are important for the optional expression and functionality of the Para NaV channel but appear quite distinct from auxiliary subunits in vertebrates. Here, we exploited available arthropod genomic resources to trace the origin of TipE-like genes by mapping their evolutionary histories and examining their genomic architectures. Results We identified a remarkably conserved synteny block of TipE-like orthologues with well-maintained local gene arrangements from 21 insect species. Homologues in the water flea, Daphnia pulex, suggest an ancestral pancrustacean repertoire of four TipE-like genes; a subsequent gene duplication may have generated functional redundancy allowing gene losses in the silk moth and mosquitoes. Intronic nesting of the insect TipE gene cluster probably occurred following the divergence from crustaceans, but in the flour beetle and silk moth genomes the clusters apparently escaped from nesting. Across Pancrustacea, TipE gene family members have experienced intronic nesting, escape from nesting, retrotransposition, translocation, and gene loss events while generally maintaining their local gene neighbourhoods. D. melanogaster TipE-like genes exhibit coordinated spatial and temporal regulation of expression distinct from their host gene but well-correlated with their regulatory target, the Para NaV channel, suggesting that functional constraints may preserve the TipE gene cluster. We identified homology between TipE-like NaV channel regulators and vertebrate Slo-beta auxiliary subunits of big-conductance calcium-activated potassium (BKCa) channels, which suggests that ion channel regulatory partners have evolved distinct lineage-specific characteristics. Conclusions TipE-like genes form a remarkably conserved genomic cluster across all examined insect genomes. This study reveals likely structural and functional constraints on the genomic evolution of insect TipE gene family members maintained in synteny over hundreds of millions of years of evolution. The likely common origin of these NaV channel regulators with BKCa auxiliary subunits highlights the evolutionary plasticity of ion channel regulatory mechanisms. PMID:22098672

2011-01-01

494

Intensity-Modulated Radiation Therapy for the Treatment of Squamous Cell Anal Cancer With Para-aortic Nodal Involvement  

SciTech Connect

Purpose: To determine the rates of toxicity, locoregional control, distant control, and survival in anal cancer patients with para-aortic nodal involvement, treated with intensity-modulated radiotherapy (IMRT) and concurrent chemotherapy at a single institution. Methods and Materials: Between 2001 and 2007, 6 patients with squamous cell anal cancer and para-aortic nodal involvement were treated with IMRT and concurrent infusional 5-fluorouracil and cisplatin. The primary tumor was treated with a median dose of 57.5 Gy (range, 54-60 Gy), involved para-aortic, pelvic, and inguinal lymph nodes were treated with a median dose of 55 Gy (range, 50.5-55 Gy), and noninvolved nodal regions were treated with a median dose of 45 Gy (range, 43.5-45 Gy). Results: After a median follow-up of 25 months, none of the patients had a recurrence at the primary tumor, pelvic/inguinal nodes, or para-aortic nodes, whereas 2 patients developed distant metastases to the liver. Four of the 6 patients are alive. The 3-year actuarial locoregional control, distant control, and overall survival rates were 100%, 56%, and 63%, respectively. Four of the 6 patients developed Grade 3 acute gastrointestinal toxicity during chemoradiation. Conclusions: Intensity-modulated radiotherapy and concurrent chemotherapy could potentially serve as definitive therapy in anal cancer patients with para-aortic nodal involvement. Adjuvant chemotherapy may be indicated in these patients, as demonstrated by the distant failure rates. These patients need to be followed carefully because of the potential for treatment-related toxicities.

Hodges, Joseph C. [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Das, Prajnan, E-mail: PrajDas@mdanderson.or [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Eng, Cathy [Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Reish, Andrew G. [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Beddar, A. Sam [Department of Radiation Physics, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States); Delclos, Marc E.; Krishnan, Sunil; Crane, Christopher H. [Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, Houston, TX (United States)

2009-11-01

495

Los NIH anuncian el lanzamiento de 3 estudios integrados de medicina de precisión; ALCHEMIST es para pacientes con ciertos tipos de cáncer de pulmón en estadio inicial  

Cancer.gov

Los Estudios sobre la Secuenciación e Identificación de Marcadores para el Mejoramiento de la Terapia Adjuvante para el Cáncer de Pulmón, conocidos con el nombre de ALCHEMIST, identificarán a pacientes con cáncer de pulmón en estadio inicial cuyos tumores albergan ciertos cambios genéticos, y evaluarán si los tratamientos con medicamentos que actúan sobre esos cambios pueden mejorar la supervivencia.

496

Polar substituent effect of the ester group on conformational equilibria of O-mono-substituted cyclohexanes —the para-substituent effect in cyclohexyl benzoates  

Microsoft Academic Search

Together with the nonsubstituted reference compound, para-methoxy- and para-nitro cyclohexyl benzoates have been synthesized and their conformational equilibria studied by low temperature NMR spectroscopy and theoretical DFT calculations. The free energy differences ?G° between axial and equatorial conformers were examined with respect to polar substituent influences on the conformational equilibrium of O-mono-substituted cyclohexane.

Erich Kleinpeter; Ute Bölke; Andrea Frank

2008-01-01

497

HERRAMIENTAS GERENCIALES PARA EL POSICIONAMIENTO DE LA EMPRESA SOSTENIBLE Y EL MARKETING ECOLÓGICO Management tools and positioning of sustainable enterprises and marketing ecological  

Microsoft Academic Search

RESUMEN La civilización humana está direccionando su acción comercial hacia el componente ecológico, tomando como principio la gerencia para proyectarse al mercado verde es decir, productos que generen menor impacto ambiental. La presente investigación tuvo como objetivo determinar las herramientas gerenciales para el posicionamiento de la empresa sostenible y el marketing ecológico. Este trabajo de investigación fue descriptivo, transeccional y

Dalia Plata de Plata

498

Determinación de la aptitud de uso del suelo para producción de cultivos con fines bioenergéticos en la provincia de Salta (Noroeste Argentino)  

Microsoft Academic Search

RESUMEN El presente trabajo presenta los resultados alcanzados en la determinación de la aptitud de uso del suelo para producción de cultivos con fines bioenergéticos en la provincia de Salta (Argentina). Para este propósito se buscó aunar los criterios de sustentabilidad social, económica, energética y ambiental que definen el desarrollo sostenible de los sistemas bioenergéticos. El objetivo principal del trabajo

Renée Alicia Anschau; María Cad; Stella Carballo; Noelia Flores

2011-01-01

499

Efectos de la fertilización orgánica y fosfatada en las características de calidad para fritura de 35 variedades nativas de papa amarilla en la Sierra Central del Perú  

Microsoft Academic Search

Resumen Un total de 35 variedades nativas de papa amarilla fue evaluado en dos experimentos de fertilización orgánica y fosfatada, situados en cuatro localidades alto andinas para determinar rendimiento y características de calidad para fritura en respuesta a tres niveles de fertilización orgánica y fosfatada, respectivamente. En base a un grupo de siete clones presentes en ambos experimentos se observó

A. Devaux; K. Manrique; C. Riveros; N. Zúñiga; A. Santana

500

Multi-modality guided trans-apical closure of recurrent mitral para-valvular regurgitation after failed surgical management in a patient with osteogenesis imperfecta.  

PubMed

We report a case of a 54 year-old man with osteogenesis imperfecta who developed severe para-valvular mitral regurgitation after a second heart operation to correct the same problem. The large para-valvular leak was successfully closed with an Amplatzer Vascular Plug III delivered from the apical approach. PMID:25082307

Boganashanmugam, Vimalraj; Goldstein, Jacob; Harper, Richard W

2014-11-01