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Sample records for coroba jessenia polycarpa

  1. Características fisicoquímicas del aceite del mesocarpio de la coroba (Jessenia polycarpa Karst

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    Moreno Alvarez, Mario J.

    2002-12-01

    Full Text Available Mature fruits of coroba (Jessenia polycarpa Karst, a wild palm from Cedeño municipality (Bolívar estate, Venezuela, harvested on July 1999, were washed, scalded, decorticated and then the mesocarp was separated. It was dried (70 ºC by 12 h, grounded and extraction process with n-hexane was applicated. The extract was distilled for to obtain the crude oil free of solvent. Physicochemical characteristics of crude oil from Coroba mesocarp were determined by means of Venezuelan official methods (COVENIN. The results showed: free acidity 0.72 % (as oleic acid; iodine index 48.2 (cgI2/g; peroxid value 2.32 (meq O2/kg; refraction index 1.4465 (at 25ºC; saponification number 198 (mg KOH/g; phosporus content 183 (mg/kg. The fatty acids composition was determined by gas chromatography. The major fatty acids found were: oleic acid (46.06 %, palmitic acid (28.56% and linoleic acid (18.04%. The Coroba mesocarp is a potential raw material for Venezuelan oil industry.Frutos maduros de Coroba (Jessenia polycarpa Karst, una palmera silvestre del municipio Cedeño (Estado Bolívar, Venezuela, cosechados en el mes de Julio de 1999, fueron lavados, escaldados, pelados y despulpados. El mesocarpio obtenido fue secado (70ºC durante 12 h, molido y sometido a extracción con n-hexano. La miscela fue destilada, quedando como producto de fondo el aceite crudo. Mediante metodologías Venezolanas COVENIN se determinaron las características fisicoquímicas del aceite de mesocarpio de la Coroba, obteniéndose los siguientes resultados: acidez libre 0,72% (como ácido oleico; índice de yodo 48,23 (cgI2/g; índice de peróxidos 2,30 (meq O2/kg; índice de refracción 1,4465 (a 25 ºC; índice de saponificación 198 (mg KOH/g; contenido de fósforo 183 (mg/kg. La composición de ácidos grasos fue determinada por cromatografía de gas. Los ácidos grasos mayoritarios fueron: ácido oleico (46,06%, ácido palmítico (28,56% y ácido linoleico (18,04%. El

  2. Características físicoquímicas del aceite de la semilla de la coroba (jessenia polycarpa karst

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    Pino, Karina

    2004-12-01

    Full Text Available The coroba (Jessenia polycarpa Karst is an autochthonous plant from the Cedeño Municipality, Bolívar State, in Venezuela, whose fruit forms part of the culinary tradition of the region. The objective of this investigation was to determine the physical-chemical characteristics of the oil from the seed of the coroba, in order to establish its possible uses. The proximate analysis of the seeds separated from mature fruits was as follows: humidity (10.16 0.04 %, fat (58.21 0.04%, raw fiber (21.64 0.07%, ash (2.21 0.09%. Oil extracted from the seeds with organic solvent (n-hexane showed the following values: iodine value ( 5.78 0.04 cg I2/g, peroxide index (1.22 0.04 meq O2/kg, free acidity (0.255% as lauric acid, refraction index at 20 °C (1.4515, phosphorus content (115.5 4.9 ppm. The fatty acid profile of the oil showed lauric acid (41.75% as the major component. These results suggest that coroba oilseed can be considered as a potential substitute for coconut and palmiste oils.La coroba (Jessenia polycarpa Karst es una planta autóctona del Municipio Cedeño, Estado Bolívar, Venezuela, cuyo fruto forma parte de la tradición culinaria de la región. El objetivo de esta investigación fue caracterizar físico-químicamente el aceite presente en la semilla de la coroba de tal manera de establecer su posible uso. Para ello, se emplearon semillas separadas de frutos maduros, a los cuales se les determinó su composición proximal, siendo la misma: humedad 10,16 0,04%, grasa 58,21 0,04%, fibra cruda 21,64 0,07%, cenizas 2,21 0,09%. El aceite fue extraído con solvente orgánico (n-hexano y se le determinó: índice de yodo (5,78 0,04 cg I2/g, índice de peróxido (1,22 0,04 meq O2/kg, acidez libre (0,255 % como ácido láurico, índice de refracción a 20 ºC (1,4515, contenido de f

  3. Características físicas y químicas del fruto de la coroba ( Jessenia polycarpa Karst: una especie oleífera venezolana

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    Medina, Carlos

    2005-12-01

    Full Text Available In this research, the structural and proximate compositions of the mature fruit of the coroba palm ( Jessenia polycarpa Karst were evaluated. The fruits were harvested in Cuchivero, Cedeño Municipality , Bolívar state-Venezuela, in July 2003. The average weight of a whole fruit was 33.00 ± 5.21 g (PEn esta investigación se evaluó la composición estructural y la composición química proximal de las partes del fruto de la palma coroba ( Jessenia polycarpa Karst. Se emplearon frutos maduros recolectados en Cuchivero, Municipio Cedeño, Estado Bolívar-Venezuela, pertenecientes a la cosecha de Julio 2003. El peso promedio de los frutos enteros fue 33,00 ± 5,21 g (P<0,05 y las proporciones de sus partes fueron las siguientes: endocarpio 33,09 %; epicarpio 28,45 %; mesocarpio o fracción comestible 20,67 %; semilla 17,79 %. La semilla presentó los mayores valores de grasa (54,50 % y proteína (9,10 %, seguido del mesocarpio (grasa 28,36 %; proteína 2,89 %; ambos componentes mostraron niveles importantes de fibra dietaria (Semilla 32,20 %; mesocarpio 12,85 % con mayor proporción de fibra insoluble (Semilla 24,38 %; mesocarpio 7,12 %, así como también calcio y fósforo. El mesocarpio presentó almidón (42,16 % con una relación amilosa/amilopectina de 1:24, mientras que la semilla no presentó carbohidratos disponibles. Los perfiles de ácidos grasos revelaron una mayor de ácidos insaturados en el mesocarpio (65,31 %, siendo el principal ácido encontrado el ácido oleico (45,46 %, mientras que en la semilla los ácidos saturados estuvieron en mayor proporción (82,38 % presentando al ácido laurico como principal (45,00 %.

  4. CoRoBa, a Multi Mobile Robot Control and Simulation Framework

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    Eric Colon

    2008-11-01

    Full Text Available This paper describes on-going development of a multi robot control framework named CoRoBa. CoRoBa is theoretically founded by reifying Real Time Design Patterns. It uses CORBA as its communication Middleware and consequently benefits from the interoperability of this standard. A multi-robot 3D simulator written in Java3D integrates seamlessly with this framework. Several demonstration applications have been developed to validate the design and implementation options.

  5. Identification of an SCAR marker related to female phenotype in Idesia polycarpa Maxim.

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    Wang, S H; Li, Y; Li, Z Q; Chang, L; Li, L

    2015-03-20

    Idesia polycarpa Maxim. is a dioecious species. Because of the lack of morphological and cytological methods available for identifying its sex during the long juvenile stage, the application of molecular markers in sex identification may facilitate sex determination in the seedling stage. The objective of this study was to use sequence-related amplified polymorphism to identify sex-linked markers in I. polycarpa and convert these markers into sequence-characterized amplified region markers, which are much easier to identify. A total of 342 primer combinations were screened and 2770 bands were examined. Only me14/em8 could amplify a specific fragment (210 base pairs) in all female but none in male plants. We analyzed this fragment using GenBank and found that the sequence similarity was 80% to the Populus trichocarpa clone POP006-H09 (sequence ID: gb|AC212923.1|) and that of the deduced amino acid sequence was 73% to the integrase of Mendicago truncatula (sequence ID: gb|ABD28291.1|) and 71% to the predicted retrotransposon integrase-like protein 1-like in Cicer arietinum (sequence ID: ref|XP 004515460.1|) (NCBI database through December 17, 2013). This fragment was converted into a stable and simple sequence-characterized amplified region marker approximately 200 base pairs in length. This marker can be utilized for early sexual identification in I. polycarpa, which will facilitate future breeding programs.

  6. Gut-spilling in chordates: evisceration in the tropical ascidian Polycarpa mytiligera.

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    Shenkar, Noa; Gordon, Tal

    2015-04-16

    The ejection of internal organs, i.e., evisceration, is a well-known phenomenon in sea-cucumbers. We report the ability of a member of the Chordate phyla, the tropical ascidian Polycarpa mytiligera, to eviscerate and regenerate its gut within 12 days, and to rebuild its branchial sac within 19 days. Evisceration occurred within 4-43 seconds of gentle mechanical pressure exerted on the tunic in 47% of the tested P. mytiligera. Individuals were able to discard up to 3/4 of their digestive tract via the incurrent siphon by rupture of the branchial sac in this area. Although chemical analysis revealed no significant levels of toxic compounds, the eviscerated guts were unpalatable to the triggerfish and pufferfish on which they were tested, suggesting evisceration as a defense mechanism. Given the close affinity of ascidians to vertebrates, the regeneration pathway of the viscera and branchial sac of ascidians suggests its potential beneficial application in soft tissue regeneration research.

  7. Separation, purification and identification of allergen from Bischofia polycarpa pollen%重阳木花粉过敏原的分离、纯化和鉴定

    Institute of Scientific and Technical Information of China (English)

    姚敏; 刘志刚; 孟光; 孔小丽

    2011-01-01

    目的 对重阳木花粉变应原蛋白进行分离、纯化和鉴定.方法 采用Coca's液提取蕈阳木花粉的粗提液,通过十二烷基硫酸钠-聚丙烯酰胺凝胶电泳(SDS-PAGE)分离粗提液蛋白质组分,并测定其分子质最;收集过敏患者血清,用Western blot法鉴定其变应原成分;通过离子交换层析对重阳木花粉变应原进行初步纯化和免疫印迹鉴定.结果 分离得到重阳木花粉18条蚩白带,其中分子质量为12和14 ku的是重阳木花粉的特异性变应原,通过离子交换柱层析方法纯化得到其相应的纯化蛋白.结论 对重阳木花粉变应原进行了初步的分离、纯化和鉴定,为临床重阳木化粉过敏疾病的诊断和治疗奠定了基础.%Objective To purify and characterize the pollen allergens isolated from Bischofia polycarpa pollen. Methods Pollen extract from Bischofia polycarpa was prepared and analyzed by SDS-PAGE. Antigenic properties of the separated proteins were analyzed by Western blot. Ion-exchange chromatography was used for the purification of the antigens. Then purified products were characterized by Western blot. Results For the pollen extract of Bischofia polycarpa, 18 protein bands was found in SDS-PAGE. Two of these protein bands, with a molecular weight of 12 and 14 ku, showed immunoreactivity with lgE from sera of Bischofia polycarpa pollen allergic patients. After the ion-exchange chromatography we got the purified protein. Conclusion Pollen allergens in Bischofia polycarpa pollen were purified and characterized. The result will provide a basis for the diagnosis and treatment of Bischofia polycarpa pollen related allergy.

  8. Optimization of Phenolics Extracted from Idesia polycarpa Defatted Fruit Residue and Its Antioxidant and Depigmenting Activity In Vitro and In Vivo

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    Yang Ye

    2014-01-01

    Full Text Available Extraction of phenolics from Idesia polycarpa defatted fruit residue was optimized by the maximization of the yield in total phenolics, using the response surface methodology. The optimized conditions were 50% ethanol, 5 h extraction time, 1 : 40 liquid to solid ratio, and 80°C extraction temperature. The experimental average total phenolics yield was 54.49±4.26 mg/g. These antioxidant properties of phenolics were comprehensively analyzed for the first time. All the extracts not only demonstrated the significant free radical scavenging activities and metal chelating activity but also inhibited lipid, lipoprotein peroxidation and revealed reducing power activity. Ethyl acetate extraction (EAE also inhibited mushroom tyrosinase activity and significantly increased the average skin-whitening index (L value of the skin of C57BL/6 mice, indicating its potential use for skin hyperpigmentation in humans. The results of cell experiments showed EAE could strongly inhibit cellular tyrosinase activity, which had led to the decrease of melanogenesis in B16 mouse melanoma cells. Overall, EAE is an excellent natural antioxidant and depigmenting agent, which can be developed as a new food additive, medicine, and cosmetic.

  9. In Vivo Antioxidant and Anti-Skin-Aging Activities of Ethyl Acetate Extraction from Idesia polycarpa Defatted Fruit Residue in Aging Mice Induced by D-Galactose

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    Yang Ye

    2014-01-01

    Full Text Available Two different concentrations of D-galactose (D-gal induced organism and skin aging in Kunming mice were used to examine comprehensively the antioxidant and antiaging activities of ethyl acetate extraction (EAE from Idesia polycarpa defatted fruit residue for the first time. The oxygen radical absorbance capacity (ORAC of EAE was 13.09 ± 0.11 μmol Trolox equivalents (TE/mg, which showed EAE had great in vitro free radical scavenging and antioxidant activity. Biochemical indexes and morphological analysis of all tested tissues showed that EAE could effectively improve the total antioxidant capacity (T-AOC of the antioxidant defense system of the aging mice, enhance the activities of superoxide dismutase (SOD, catalase (CAT, and glutathione peroxidase (GSH-Px of tissues and serum, increase glutathione (GSH content and decrease the malondialdehyde (MDA content, and maintain the skin collagen, elastin, and moisture content. Meanwhile, EAE could effectively attenuate the morphological damage in brain, liver, kidney, and skin induced by D-gal and its effect was not less than that of the well-known L-ascorbic acid (VC and α-tocopherol (VE. Overall, EAE is a potent natural antiaging agent with great antioxidant activity, which can be developed as a new medicine and cosmetic for the treatment of age-related conditions.

  10. Study on Age Structure and Its Dynamic Characteristics of Wild Idesia polycarpa Population in Guizhou Province%贵州野生山桐子种群年龄结构及其动态特性

    Institute of Scientific and Technical Information of China (English)

    谢双喜; 吴志文

    2012-01-01

    Based on the method of " replacing the age class by DBH class" , the population structure, life table and survival function for Idesia polycarpa were analyzed. The results showed that the natural population structure of I. polycarpa was roughly presented as pyramidal shape. The plants were selected from the seedling stage to the juvenile stage under the natural conditions by the environment sieve with light as the leading factor. The quantitative analysis on the population dynamics showed that the I. polycarpa population was still an increasing type structure although with some fluctuation. Its population presented the quantitative fluctuation characteristics with multiple small cycles overlapped in the large cycles, and its survival curve tended to be the Deevey — Ⅲcurve.%用径级代替年龄级的方法,对山桐子自然种群结构、生命表和生存函数进行研究.结果表明,山桐子的自然种群结构大体呈“金字塔”形,在天然群落中,山桐子从幼苗期到幼树期要经过以光照为主导的环境筛的选择.种群动态量化分析发现,山桐子种群结构虽然有波动,但仍然为一个增长型的种群,其种群呈现大周期内有小周期的多谐波迭加的数量波动特征,其存活曲线趋于Deevey-Ⅲ型曲线.

  11. 环境条件对重阳木生长的影响%Effect of Environmental Conditions on the Growth Status of Bischofia polycarpa

    Institute of Scientific and Technical Information of China (English)

    曹志华; 文佳; 胡娟娟; 束庆龙

    2012-01-01

      对重阳木以通径分析方法分析其生长状况与环境条件的关系。结果表明:多行的重阳木与其生长状况呈较强的正相关关系,除直接作用外,根系半深埋,根系损害以及地面硬化等均可通过其对生长状况产生影响;根系正常与冠幅生长相关性较强,除直接作用外,多行,根系伤害以及地面硬化程度均可通过其对冠幅生长产生影响;单行的重阳木与树干生长关系密切,除直接作用外,根系深埋、根系伤害程度以及地面硬化程度均可通过其对树干生长产生影响;根系深埋推迟发芽时间,除直接作用外,单行以及地面硬化均可通过其对发芽时间产生影响%  The relationships between growth status and environmental conditions of Bischof ia polycarpa were analyzed by path analysis in Anhui agricultural university .The results showed :environmental con-dition that was multi-line was closely related with growth status ,in addition to direct effect ,half-buried root ,root damage and hardened ground could impact on the growth status through its ;healthy root had a significant relevant with crown growth ,in addition to direct effect ,the multi-line ,root damage ,and hardened ground could also impact on the crown broadness through its ; single-line was closely relatedwith the growth of trunk ,in addition to direct effect ,deep-buried root system ,root damage and hardened ground could also impact on the trunk growth through its ;deep-buried root greater impact on the germi-nation time ,in addition to direct effect ,single-line and hardened ground could also impact on the germi-nation time through its .

  12. Fenología y poscosecha de mil pesos Jessenia bataua (Mart Burret

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    Mejía G. Mario

    1988-06-01

    Full Text Available Las fenofases floración y cosecha tendieron a presentarse en períodos de menor precipitación, en particular los de principio de cada año. El tiempo de evolución de la inflorescencia fue de 10-18 meses y el de la fructificación de 10-14 meses. Se observaron nueve especies de insectos visitando esta especie, de los cuales el crisomelido Osmophoita sp. es un posible polinizador. El peso promedio de un fruto fresco es de 15 g. del cual sólo el 3 % es aceite. La leche, que se extrae de la pulpa del fruto, tiene alto valor nutricional sólo comparable en grasas, proteína y carbohidratos a la leche humana. El rendimiento máximo en frutos maduros/racimo fue de 19.38 kg y mínimo de 0.69 kg.Phenologycal data showed that phenophases blooming and harvest have a marked trend to appear in periods of minor precipitation, particularly in the begining of every year. Time evolution of the inflorescence was 10 to 18 months and of the fructification 10 to 14 months. Nine species of insects were observed visiting this species, one of which, the chrysomelida Osmophoita sp, is a possible pollinator agent. The average weight of a fresh fruit is 15 g, of which only 3 % is oil. Extracted milk from the pulp of the fruit has a high nutritional value only comparable in fats, proteins and carbohydrates with human milk.The maximum yield in mature fruits/raceme was 19.38 kg and the least 0.69 kg.

  13. Euphorbia latex: a possible source of hydrocarbons and rubber

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    Viaud, P.; Teisseire, D.

    1975-01-01

    Illustrated descriptions are given of 36 plants of potential economic value in underdeveloped tropical countries, classified by use. The plants are either wild or cultivated on a fairly local scale. Accounts of limitations and special requirements and lists of references, research contacts and sources of germ plasm are included for each species. The following tree and shrub species are included: Cnidoscolus aconitifolius, C. chayamansa and hearts of several edible palm species including Euterpe edulis (vegetables); Durio species, Garcinia mangostana, Solanum quitoense, Bactris gaspiaes, Citrus grandis, Annona muricata and Pourouma cecropiaefolia (fruits); Orbignya martiana, Caryocar species, Jessenia polycarpa and Simmondsia chinensis (oil seeds); Acacia albida, Brosimum alicastrum, Cassia sturtii, Atriplex species and Prosopis tamarungo (forage (browse)); Mauritia flexuosa (fruit, wood, etc.); Euphorbia antisyphilitica (wax); and Parthenium argentatum (rubber).

  14. Additions to the lichens and lichenicolous fungi of Denmark 8

    DEFF Research Database (Denmark)

    Alstrup, Vagn; Søchting, Ulrik; Dragsholt, Claus;

    2013-01-01

    Eiglera flavida and Epilichen scabrosus should be deleted from the Danish checklist. The collections of Caloplaca citrina are revised and most of them referred to C. flavocitrina. Amandinea pelidna, Arthonia peltigerae, A. phaeophysciae, Caloplaca britannica, C. polycarpa, Clauzadea metzleri, Cyp...

  15. Additions to the lichens and lichenicolous fungi of Denmark 8

    DEFF Research Database (Denmark)

    Alstrup, Vagn; Søchting, Ulrik; Dragsholt, Claus

    2013-01-01

    Eiglera flavida and Epilichen scabrosus should be deleted from the Danish checklist. The collections of Caloplaca citrina are revised and most of them referred to C. flavocitrina. Amandinea pelidna, Arthonia peltigerae, A. phaeophysciae, Caloplaca britannica, C. polycarpa, Clauzadea metzleri, Cyp...

  16. Caracterización de aeites de frutos de palmeras de la región amazónica del Brasil

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    Mambrin, M. C.; Barrera Arellano, D.

    1997-01-01

    The physicochemical characteristics, yield and fatty acid composition of pulp oils from bacaba (Oenocarpus distichus) pataua (Jessenia batana) and tucuma (Astrocaryum vulgare) and kernel fats from tucuma and muru-muru (Astrocaryum murumuru), all obtained from palm tree fruits collected in the brazilian rain forest (Amazonia region), were determined. The pulp oils belong to the oleic group (> 57% oleic acid) and the...

  17. Taxonomic status of Oenocarpus bataua (Euterpeae, Arecaceae inferred from plastid sequences

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    Rommel Montúfar

    2014-03-01

    Full Text Available With the aim of testing the evolutionary relationships between Oenocarpus bataua (formerly Jessenia bataua and other Oenocarpus species (Arecaceae, a phylogenetic study of tribe Euterpeae (Arecaceae was conducted using 3,6 kb of non-coding chloroplast DNA sequence data. The results of maximum parsimony analysis support the monophyly of Euterpeae and the inclusion of O. bataua within the Oenocarpus clade. Our results show substantial molecular divergence between O. bataua var. bataua and var. oligocarpus suggesting that, according to their original description, these two taxa may indeed represent different species. However, our phylogenies should be considered as tentative due to low statistical support.

  18. Caracterización de aeites de frutos de palmeras de la región amazónica del Brasil

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    Mambrin, M. C.

    1997-06-01

    Full Text Available The physicochemical characteristics, yield and fatty acid composition of pulp oils from bacaba (Oenocarpus distichus pataua (Jessenia batana and tucuma (Astrocaryum vulgare and kernel fats from tucuma and muru-muru (Astrocaryum murumuru, all obtained from palm tree fruits collected in the brazilian rain forest (Amazonia region, were determined. The pulp oils belong to the oleic group (> 57% oleic acid and the kernel fats to the lauric group (> 77% lauric acid.

    Se determinaron las características de los aceites de la pulpa de Bacaba (Oenocarpus distichus, Pataua (Jessenia batana y Tucumã (Astrocaryum vulgare y grasas de las nueces (coquitos de Tucumã y Muru-Muru (Astrocaryum murumuru, frutos de palmeras originarias de la región amazónica del Brasil. Rendimiento de aceite, características de su calidad y de composición fueron determinadas. Las pulpas producen aceites del grupo Oleico (≤57% ac. oleico y las nueces grasas del grupo Láurico (≥27% ac. láurico.

  19. The effects of field preservation on alkaloid content of fresh coca leaves (Erythroxylum spp.).

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    Balick, M J; Rivier, L; Plowman, T

    1982-11-01

    In order to test the effects of commonly used preservation agents on the alkaloid content of herbarium specimens, fresh leaves of Erythroxylum coca, E. novogranantense, and E. novogranatense var. truxillense were air-or heat-dried or treated with six different liquid preservatives. The leaves were then extracted and analyzed quantitatively for cocaine content. Leaves which were soaked in preservatives showed appreciable pre-extraction of cocaine and probably of other alkaloids. The results compare well with a similar experiment conducted on flavonoid content of the leaves of a palm Jessenia bataua. If portions of herbarium specimens are to be useful for phytochemical screening using microtechniques, at least part of the collection must be air- or heat-dried to retain the chemical constituents.

  20. Introduced and native Phlebobranch and Stolidobranch solitary ascidians (Tunicata: Ascidiacea around Salvador, Bahia, Brazil

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    Rosana M. Rocha

    2012-02-01

    Full Text Available The Port of Salvador (12°58'S, 38°30'W receives cargo ships from different regions such as southeast Asia, North Atlantic, Mediterranean, Africa, North and South America. Thus, the presence of this port enhances the probability of new species arriving and establishing in Todos os Santos Bay (TSB, in which the port is located. Ascidians are sessile filter-feeding invertebrates with short lived larvae and thus are good indicators of bioinvasion. We surveyed the ascidian fauna on three different occasions: August 1999, June 2004 and December 2007. Nineteen species were identified belonging to the following families: Ascidiidae (Phallusia nigra, Ascidia cf. multitentaculata, A. nordestina, A. papillata, A. scalariforme, A. cf. tapuni, A. tenue, Corellidae (Rhodosoma turcicum, Pyuridae (Microcosmus anchylodeirus, M. exasperatus, M. helleri, Pyura vittata, Herdmania pallida, and Styelidae (Polycarpa cf. reviviscens, P. spongiabilis, P. tumida, Polycarpa sp., Styela canopus, Cnemidocarpa irene. Only A. nordestina, A. papillata, A. scalariforme and P. spongiabilis are possibly native to this region, while P. tumida and C. irene were classified as introduced. Microcosmus anchylodeirus, H. pallida, P. vittata, M. exasperatus, M. helleri, S. canopus, A. cf. multitentaculata, A. tenue and P. nigra were classified as cryptogenic. Most are widely distributed in all oceans and their native geographic distribution is unknown, while A. cf. multitentaculata and A. tenue occur only in the Atlantic, with disjunct distributions. Polycarpa cf. reviviscens, P. tumida and M. anchylodeirus are registered for the first time on the coast of Brazil. Colonial ascidians from this collection are still being studied. The large number of cryptogenic and introduced species indicates the necessity of monitoring TSB for expansion of these populations and the need for the establishment of control programs.

  1. First report of the fertile plant genus Umkomasia from Late Permian beds in India and its biostratigraphic significance

    Energy Technology Data Exchange (ETDEWEB)

    Chandra, S.; Singh, K.J.; Jha, N. [Birbal Sahni Institute for Paleobotany, Lucknow (India)

    2008-07-15

    The genus Umkomasia Thomas, a female fructification of Dicroidium, is reported from Late Permian beds exposed in the Behra Rivulet near the village of Karaonda in the Tatapani-Ramkola Coalfield, Chhattisgarh, India. This is the first record of this genus from the Late Permian, and from Indian Gondwana. Two species have been recognized: Umkomasia polycarpa Holmes and U. uniramia Axsmith, Taylor, Taylor and Cuneo. The find suggests that the genus Dicroidium appeared in the Late Permian before reaching its acme in the Middle-Upper Triassic.

  2. Selection and application of roadside trees in Fujian Province%福建省公路行道树种的选择和应用

    Institute of Scientific and Technical Information of China (English)

    罗颀

    2006-01-01

    采用层次分析法对福建省179种公路行道树种进行综合评价和筛选.结果表明,排名较前的主要树种有印度胶树(Ficus elastica)、榕树(Ficus microcarpa)、罗晃子(Tamarindus indica)、蕈树(Altingia chinensis)、波罗蜜(Artocarpus heterophyllus)、耳叶相思(Acacia auriculiformis)、南洋楹(Albizia falcataria)、石栗 (Aleurites moluccana)、秋枫(Bischofia polycarpa)、红楠(Machilus thunbergii)等.这些树种已较广泛应用于福建行道绿化中.

  3. Contributions to the moss flora of Gümüşhane Province (Torul and Kürtün districts, Turkey).

    Science.gov (United States)

    Ozdemir, Turan; Batan, Nevzat

    2009-02-15

    Some moss specimens were collected from Gümüşhane Province between September and October 2008. As a result of field and laboratory studies, 92 taxa belonging to 22 families were identified. These taxa are presented in a list. All taxa are new to the study area (Gümüşhane Province). Eight taxa are (Ditrichum flexicaule (Schwaegr.) Hampe, Ditrichum pusillum (Hedw.) Hampe, Grimmia lisae De Not., Grimmia montana Bruch and Schimp., Herzogiella seligeri (Brid.) Z. Iwats., Leskea polycarpa Hedw., Pohlia melanodon (Brid.) J. Shaw, Trichostomum tenuirostre (Hook and Taylor) Lindb. var. tenuirostre) new records for A4 Square (40-42 degrees N, 38-42 degrees E) were determined. The aim of the study was to determine the moss taxa growing in Gümüşhane Province (Torul and Kürtün districts) and to make a contribution to the moss flora of Turkey.

  4. Underexploited tropical plants with promising economic value

    Energy Technology Data Exchange (ETDEWEB)

    1975-01-01

    The apparent advantages of staple plants over the minor tropical plants often result only from the disproportionate research attention they have been given. A world-wide inquiry resulted in a list of 400 promising but neglected species. The 36 most important species are described in compact monographs and concern cereals (Echinochloa turnerana, grain amaranths, quinua and Zosterea mazina), roots and tubers (Arrachacha, cocoyams and taro), vegetables (chaya, hearts of palms, wax gourd, winged bean), fruits (durian, mangosteen, naranjilla, pejibaye, pummelo, soursop, uvilla), oilseeds (babassu palm, buffalo gourd, Caryocar species, Hessenia polycarpa and jojoba), forage (Acacia albida, Brosimum alicastrum Cassia sturtii, saltbushes and tamarugo) and other crops (buriti palm, Calathea lutea, candelilla, guar, guayule, Paspalum vaginatum, ramie and Spirulina).

  5. Installation Restoration Program Records Search for Luke Air Force Base, Arizona.

    Science.gov (United States)

    1982-06-01

    Selenium ɘ.01 ɘ.01 Silver ɘ.01 ɘ.01 Copper 0.25 0.25 Iron 4.2 0.1 Manganese 0.05 ɘ.05 Zinc ɘ.05 ɘ.05 Calcium as Ca 9.9 28.2 Magnesium as Mg 4.0...Atriplex polycarpa) community, which also includes species such as chamiso (Atriplex canescens) and mesquite ( Prosopis juliflora), formery occurred over...Chromium ɘ.05 ɘ.05 Lead ɘ.02 ɘ.02 Mercury 0.002 ɘ.002 Selenium ɘ.01 ɘ.01 Silver ɘ.01 ɘ.01 Copper 0.24 0.38 Iron 0.15 0.31 Manganese ɘ.05

  6. Assessment of impacts and evaluation of restoration methods on areas affected by a well blowout, Naval Petroleum Reserve No. 1, California

    Energy Technology Data Exchange (ETDEWEB)

    Warrick, G.D.; Kato, T.T.; Phillips, M.V. [and others

    1996-12-01

    In June 1994, an oil well on Naval Petroleum Reserve No. 1 blew-out and crude oil was deposited downwind. After the well was capped, information was collected to characterize the release and to assess effects to wildlife and plants. Oil residue was found up to 13.7 km from the well site, but deposition was relatively light and the oil quickly dried to form a thin crust on the soil surface. Elevated levels of hydrocarbons were found in livers collected from Heermann`s kangaroo rats (Dipodomys heermanni) from the oiled area but polycyclic aromatic hydrocarbons (known carcinogens or mutagens) were not detected in the livers. Restoration techniques (surface modification and bioremediation) and natural recovery were evaluated within three portions of the oiled area. Herbaceous cover and production, and survival and vigor of desert saltbush (Atriplex polycarpa) were also monitored within each trapping grid.

  7. 无土基质中包膜复合肥对烤烟生产的影响%Study on the Ratio of Utilization of Release of Fertilizer with the Coating Fertilizer Based on Soil-less Culture

    Institute of Scientific and Technical Information of China (English)

    施卫省; 潘美亮; 刘基林; 宋爱萍

    2012-01-01

    为了研究无土基质中,包膜复合肥对烤烟生长的影响,以水冬瓜果油为新型包膜材料,生产包膜肥料,采用盆栽试验方法对烤烟生长进行了研究.结果表明:在无土基质环境条件下,施包膜复合肥的烟株生物量鲜重为657.8g,施普通复合肥的烟株生物量鲜重为513.5g,净增加148.3g;每克包膜复合肥生产烤烟干物质量比普通复合肥高6.1g.通过无土栽培试验证明,水冬瓜果油包膜复合肥具有良好的生产性.%In order to research influence of growth of the tobacco with coated compound fertilizer in soilless cultivation, with the new coating material as the Idesia polycarpa var. vestita oil and producing the coated-released-fertilizer, the method of pot cultivation experiment was used in the growth of tobacco. The result showed that the weight of fresh bio-mass of the tobacco was 657.8 g in coated-composite fertilizer and that was 513.5 g in composite fertilizer and that increased 148.3 g in soilless agriculture, the quality of dry matter of production of per gram. Coated compound fertilizer was up to 6.1 g higher than ordinary composite fertilizer. The proof was tested that the coated-composite fertilizer as coating material with Idesia polycarpa var. vestita oil was good production.

  8. Bioavailability, Bioaccumulation and Biotransformation of arsenic in coral reef organisms surrounding an arsenic-rich marine shallow-water hydrothermal vent system in the coastal waters of Ambitle Island, Papua New Guinea

    Science.gov (United States)

    Pichler, T.; Wallschläger, D.; Price, R. E.

    2009-12-01

    Marine shallow-water hydrothermal systems are often enriched in biologically toxic elements, thus making them ideal natural analogs for coastal anthropogenic pollution. Here, we report our investigation of the bioavailability, bioaccumulation, and biotransformation of hydrothermally-derived arsenic into several coral reef organisms from the arsenic-rich marine shallow-water hydrothermal system of Tutum Bay, Ambitle Island, in northeastern Papua New Guinea. Hydrothermal venting provided bioavailable As by two major pathways throughout Tutum Bay: 1) easily-exchangeable As from hydrothermally influenced sediments to as far away as 200 m from focused venting, and 2) in surface seawaters, which may allow for biological uptake by phytoplankton and transfer up the food web. The soft coral Clavularia sp., the calcareous algae Halimeda sp., and the tunicate Polycarpa sp. collected from the hydrothermal area each displayed distinctly higher (up to 20 times) total arsenic compared to the control site, with increasing trends while approaching focused hydrothermal venting. Organic and inorganic arsenic species were extracted intact from the tissues of each organism, separated by anion exchange chromatography, and analyzed by inductively-coupled plasma-dynamic reaction cell-mass spectrometry. Overall, speciation patterns for Clavularia were similar for the control site versus the hydrothermal site, although the concentrations were much higher. Elevated concentrations of DMA and cationic forms of arsenic, most likely AB, in Clavularia, both from the control site and from the hydrothermal area suggest its metabolic pathway is not altered due to hydrothermal activity, and is similar to other marine organisms. Arsenic speciation patterns in Polycarpa were also similar for both sites, and suggests uptake of arsenic via food chain, containing neither As(III) nor As(V), but abundant excluded As and DMA. It is unclear if methylation is taking place within this organism or prior to

  9. Comparative Studies on Physical-Chemical Characteristics and Fatty Acid Composition of Oil from Seven Plants and Their Bio-diesel Fuels%7种木本植物油理化性质及其生物柴油脂肪酸组成的比较研究

    Institute of Scientific and Technical Information of China (English)

    陈姹月; 唐琳; 陈放

    2012-01-01

    通过对麻疯树、乌桕、毛叶山桐子、油茶、巴豆、蝴蝶果和东京桐7种产于西南地区木本植物种子油的理化性质及其制备的生物柴油脂肪酸组成进行比较研究,根据各国制定的生物柴油标准,筛选出蝴蝶果、油茶和东京桐也是生物柴油的理想原料植物.巴豆和毛叶山桐子可作为生产生物柴油的备选资源,通过优化反应条件,添加催化剂等方式达到优产的目的.%Because of the energy shortage in 21th century, the plant resources for bio-diesel fuels should be further developed. The physical-chemical characteristics and the fatty acid composition in their bio-diesel of the seed oil of Jatropha curcas , of Sapium sebiferum , of Idesia polycarpa Maxim, of Camellia oleifera , of Croton tiglium , of Cleidiocarpon cavaleriei and of Deutzianthus tonkinensis have been analyzed in order to find out new plant resources. According to the standards of bio-diesel in several counties, we have found that Cleidiocarpon cavaleriei, Deutzianthus tonkinensis and Camellia olei fera are suitable new plant resources for bio-diesel fuels. By optimizing the reaction conditions and adding catalyst, Croton tiglium and Idesia polycarpa Maxim could be the alternative plant resources.

  10. CHROMOSOME NUMBERS OF SPECIES OF MIMOSA (LEGUMINOSAE OF PARAGUAY NÚMEROS CROMOSÓMICOS DE ESPECIES DE MIMOSA (LEGUMINOSAE DE PARAGUAY

    Directory of Open Access Journals (Sweden)

    Guillermo Seijo

    2010-11-01

    Full Text Available

    In the present study the chromosome numbers of Mimosa xanthocentra subsp. subsericea var. subsericea, M. balansae, M. chacoensis, M. rojasiiall with 2n=26 and M. lupinoides with 2n=52 are reported for the first time. The 2n=52 of M. somnians subsp. viscida vara viscida and of M. somnians subsp. somnians var. somnians are new and differ from the 2n=26 published before for M. somnians var. somniansof Argentina. M. debiliswith 2n=26 also differs from the numbers
    reported previously for M. debilis var. debilis from Argentina with 2n=52. The 2n=26 of M. bimucronata var. adenocarpa coincides with the reported number for M. bimucronata var.
    bimucronata, and the number of M. polycarpa var. spegazzinii with 2n=26 is confirmed.
    En el presente estudio el número de cromosomas de la subsp Mimosa xanthocentra. subsericea var. subsericea, M. balansae, M. chacoensis, M. rojasii todos con 2n = 26 y M. lupinoides con 2n = 52 ha sido reportado en primer término. El 2n = 52 de M. somnians subsp. viscida var. viscida y de M. somnians subsp. somnians var. somnians son nuevas y diferentes de las 2n = 26 publicados antes para M. somnians var. somnians de Argentina. M. debilis con 2n = 26 también difiere de las cifras reportadas previamente para M. debilis var. debilis de Argentina con 2n = 52. El 2n = 26 de adenocarpa M. bimucronata var. coincide con la cifra reportada para M. bimucronata var. bimucronata, y el número de M. polycarpa var. spegazzinii con 2n = 26 se confirma

  11. AMAZON RAINFOREST COSMETICS: CHEMICAL APPROACH FOR QUALITY CONTROL

    Directory of Open Access Journals (Sweden)

    Mariko Funasaki

    2016-02-01

    Full Text Available The market for natural cosmetics featuring ingredients derived from Amazon natural resources is growing worldwide. However, there is neither enough scientific basis nor quality control of these ingredients. This paper is an account of the chemical constituents and their biological activities of fourteen Amazonian species used in cosmetic industry, including açaí (Euterpe oleracea, andiroba (Carapa guianensis, bacuri (Platonia insignis, Brazil nut (Bertholletia excelsa, buriti (Mauritia vinifera or M. flexuosa, cumaru (Dipteryx odorata, cupuaçu (Theobroma grandiflorum, guarana (Paullinia cupana, mulateiro (Calycophyllum spruceanum, murumuru (Astrocaryum murumuru, patawa (Oenocarpus bataua or Jessenia bataua, pracaxi (Pentaclethra macroloba, rosewood (Aniba rosaeodora, and ucuuba (Virola sebifera. Based on the reviewed articles, we selected chemical markers for the quality control purpose and evaluated analytical methods. Even though chromatographic and spectroscopic methods are major analytical techniques in the studies of these species, molecular approaches will also be important as used in food and medicine traceability. Only a little phytochemical study is available about most of the Amazonian species and some species such as açaí and andiroba have many reports on chemical constituents, but studies on biological activities of isolated compounds and sampling with geographical variation are limited.

  12. Repetibilidade e número mínimo de medições para caracteres de cacho de bacabi (Oenocarpus mapora Repeatability and minimum number of measurements for characters of bacabi palm (Oenocarpus mapora racemes

    Directory of Open Access Journals (Sweden)

    Maria do Socorro Padilha de Oliveira

    2010-12-01

    Full Text Available A bacabi (Oenocarpus mapora H. Karsten é uma palmeira perene nativa da Amazônia, que produz cachos com centenas de frutos que apresentam grande potencialidade à agroindústria de polpa, mas tem sido pouco estudada. Os objetivos deste trabalho foram estimar os coeficientes de repetibilidade e determinar a previsibilidade e o número de medições necessárias para caracteres de cacho dessa palmeira. Foram avaliados 27 indivíduos de bacabi pertencentes ao Banco de Germoplasma de Oenocarpus/Jessenia da Embrapa Amazônia Oriental, em Belém-PA. De cada planta, foram colhidos três cachos em maturação completa para a mensuração de seis caracteres: peso total do cacho (PTC e de frutos por cacho (PFC, número de ráquilas por cacho (NRC, comprimento da ráquis por cacho (CRC, peso de 100 frutos (PCF e rendimento de frutos por cacho (RFC. As estimativas de repetibilidade foram obtidas pelos métodos estatísticos da análise de variância, componentes principais e análise estrutural. Em todos os caracteres, as estimativas de repetibilidade apresentaram valores muito semelhantes nos três métodos. As estimativas dos coeficientes de repetibilidade e as previsibilidades foram relativamente altas (r 0,60 e R² 81,7% para os caracteres número de ráquilas e rendimento de frutos por cacho, demonstrando regularidade dos genótipos nas várias medições (cachos, em todos os métodos. Para esses caracteres, o número mínimo de cachos necessários para a avaliação do real valor dos genótipos foi de treze (RFC e cinco (NRC cachos com confiabilidade de 95%, tornando-os factíveis no uso de inferências genéticas para as condições do estudo. Os demais caracteres exibiram repetibilidades e coeficientes de determinação de médias a baixas magnitudes, indicando necessidade de maior controle ambiental para suas mensurações.Bacabi (Oenocarpus mapora H. Karsten is a native Amazonian palm that produces racemes with hundreds of fruits with great

  13. Deep Sequencing of Mixed Total DNA without Barcodes Allows Efficient Assembly of Highly Plastic Ascidian Mitochondrial Genomes

    Science.gov (United States)

    Rubinstein, Nimrod D.; Feldstein, Tamar; Shenkar, Noa; Botero-Castro, Fidel; Griggio, Francesca; Mastrototaro, Francesco; Delsuc, Frédéric; Douzery, Emmanuel J.P.; Gissi, Carmela; Huchon, Dorothée

    2013-01-01

    Ascidians or sea squirts form a diverse group within chordates, which includes a few thousand members of marine sessile filter-feeding animals. Their mitochondrial genomes are characterized by particularly high evolutionary rates and rampant gene rearrangements. This extreme variability complicates standard polymerase chain reaction (PCR) based techniques for molecular characterization studies, and consequently only a few complete Ascidian mitochondrial genome sequences are available. Using the standard PCR and Sanger sequencing approach, we produced the mitochondrial genome of Ascidiella aspersa only after a great effort. In contrast, we produced five additional mitogenomes (Botrylloides aff. leachii, Halocynthia spinosa, Polycarpa mytiligera, Pyura gangelion, and Rhodosoma turcicum) with a novel strategy, consisting in sequencing the pooled total DNA samples of these five species using one Illumina HiSeq 2000 flow cell lane. Each mitogenome was efficiently assembled in a single contig using de novo transcriptome assembly, as de novo genome assembly generally performed poorly for this task. Each of the new six mitogenomes presents a different and novel gene order, showing that no syntenic block has been conserved at the ordinal level (in Stolidobranchia and in Phlebobranchia). Phylogenetic analyses support the paraphyly of both Ascidiacea and Phlebobranchia, with Thaliacea nested inside Phlebobranchia, although the deepest nodes of the Phlebobranchia–Thaliacea clade are not well resolved. The strategy described here thus provides a cost-effective approach to obtain complete mitogenomes characterized by a highly plastic gene order and a fast nucleotide/amino acid substitution rate. PMID:23709623

  14. Modiolarca lateralis (Pteryomorphia: Mytilidae: bivalve associated to six species of ascidians from Bocas del Toro, Panama

    Directory of Open Access Journals (Sweden)

    Juan I Cañete

    2013-11-01

    Full Text Available We describe the presence of the bivalve Modiolarca lateralis (Say, 1822 in six tropical ascidians Ascidia curvata, A. sydneiensis, A. panamensis, A. interrupta, Herdmania pallida and Polycarpa spongiabilis collected at depths of 1-3 m on coral reefs, mangrove roots and dock supports in Almirante Bay, Bocas del Toro, Panama (9°18'N, 82°13'W during June-July 2011. Bivalve prevalence varied between 9-30% across species, but was mainly associated with A. panamensis, P. spongiabilis and A. interrupta. Prevalence seems to be influenced by tunic thickness rather than by the ascidian size. Bivalves varied in size (0.6-11 mm shell length, with the smallest individual found in A. sydneiensis. There were only one or two bivalves per ascidians, although a maximum of 18 was found in one A. panamensis. M. lateralis seems to behave similarly to its temperate counterparts: it has a variety of hosts, occurs mainly in the anterior region of the ascidians, and has a variable abundance per host.

  15. Deep sequencing of mixed total DNA without barcodes allows efficient assembly of highly plastic ascidian mitochondrial genomes.

    Science.gov (United States)

    Rubinstein, Nimrod D; Feldstein, Tamar; Shenkar, Noa; Botero-Castro, Fidel; Griggio, Francesca; Mastrototaro, Francesco; Delsuc, Frédéric; Douzery, Emmanuel J P; Gissi, Carmela; Huchon, Dorothée

    2013-01-01

    Ascidians or sea squirts form a diverse group within chordates, which includes a few thousand members of marine sessile filter-feeding animals. Their mitochondrial genomes are characterized by particularly high evolutionary rates and rampant gene rearrangements. This extreme variability complicates standard polymerase chain reaction (PCR) based techniques for molecular characterization studies, and consequently only a few complete Ascidian mitochondrial genome sequences are available. Using the standard PCR and Sanger sequencing approach, we produced the mitochondrial genome of Ascidiella aspersa only after a great effort. In contrast, we produced five additional mitogenomes (Botrylloides aff. leachii, Halocynthia spinosa, Polycarpa mytiligera, Pyura gangelion, and Rhodosoma turcicum) with a novel strategy, consisting in sequencing the pooled total DNA samples of these five species using one Illumina HiSeq 2000 flow cell lane. Each mitogenome was efficiently assembled in a single contig using de novo transcriptome assembly, as de novo genome assembly generally performed poorly for this task. Each of the new six mitogenomes presents a different and novel gene order, showing that no syntenic block has been conserved at the ordinal level (in Stolidobranchia and in Phlebobranchia). Phylogenetic analyses support the paraphyly of both Ascidiacea and Phlebobranchia, with Thaliacea nested inside Phlebobranchia, although the deepest nodes of the Phlebobranchia-Thaliacea clade are not well resolved. The strategy described here thus provides a cost-effective approach to obtain complete mitogenomes characterized by a highly plastic gene order and a fast nucleotide/amino acid substitution rate.

  16. Repetibilidade e número mínimo de medições para caracteres de cacho de bacabi (Oenocarpus mapora

    Directory of Open Access Journals (Sweden)

    Maria do Socorro Padilha de Oliveira

    2010-12-01

    Full Text Available A bacabi (Oenocarpus mapora H. Karsten é uma palmeira perene nativa da Amazônia, que produz cachos com centenas de frutos que apresentam grande potencialidade à agroindústria de polpa, mas tem sido pouco estudada. Os objetivos deste trabalho foram estimar os coeficientes de repetibilidade e determinar a previsibilidade e o número de medições necessárias para caracteres de cacho dessa palmeira. Foram avaliados 27 indivíduos de bacabi pertencentes ao Banco de Germoplasma de Oenocarpus/Jessenia da Embrapa Amazônia Oriental, em Belém-PA. De cada planta, foram colhidos três cachos em maturação completa para a mensuração de seis caracteres: peso total do cacho (PTC e de frutos por cacho (PFC, número de ráquilas por cacho (NRC, comprimento da ráquis por cacho (CRC, peso de 100 frutos (PCF e rendimento de frutos por cacho (RFC. As estimativas de repetibilidade foram obtidas pelos métodos estatísticos da análise de variância, componentes principais e análise estrutural. Em todos os caracteres, as estimativas de repetibilidade apresentaram valores muito semelhantes nos três métodos. As estimativas dos coeficientes de repetibilidade e as previsibilidades foram relativamente altas (r 0,60 e R² 81,7% para os caracteres número de ráquilas e rendimento de frutos por cacho, demonstrando regularidade dos genótipos nas várias medições (cachos, em todos os métodos. Para esses caracteres, o número mínimo de cachos necessários para a avaliação do real valor dos genótipos foi de treze (RFC e cinco (NRC cachos com confiabilidade de 95%, tornando-os factíveis no uso de inferências genéticas para as condições do estudo. Os demais caracteres exibiram repetibilidades e coeficientes de determinação de médias a baixas magnitudes, indicando necessidade de maior controle ambiental para suas mensurações.

  17. DOE Chair of Excellence in Environmental Disciplines-Final Technical Report

    Energy Technology Data Exchange (ETDEWEB)

    Kurunganty, Sastry; Loran, Roberto; Roque-Malherbe, Rolando; Hijazi, Yazan; Nieto, Santander; Gomez, Will A.; Duconge, Jose; Cotto, María del C.; Muniz, Carlos; Diaz, Francisco J.; Neira, Carlos F.; Marquez, Francisco; Del Valle, W.; Thommes, M.

    2014-02-19

    Characterization of low Refractive Index Aerogel Silica for Cherenkov Counters- Dr. Rolando Roque-Malherbe Sub-project PI, Dr. Jose Duconge Sub-project Co-PI, Dr. Santander Nieto Assistant Researcher, Francisco Diaz and Carlos Neira Associate Researchers. The initial aim of this sub-project was changed to the synthesis and characterization of extremely high specific surface area aerogel silica for gas storage. A high specific surface area silica gel that has applications in gas drying, cleaning operation useful in nuclear industry in process was developed. Sub-Project 2: Investigation Study of Magnetic and Electronic Transport Properties at Material Interfaces in Magnetic Multilayer Heterostructure using Gd. – Dr. Yazan Hijazi, Sub-project Co-PI. UT developed the capability and infrastructure to produce high quality thin-film magnetic films and magnetic multilayer structures with fine control over film quality and thickness using sputter deposition capability to perform in-house electric and magnetic characterization of these films. The research experimentally quantified the effect of Gd incorporation within the magnetic multilayer structure and produce magnetic media with exchanged decoupled multilevel magnetic anisotropy. From September 2006 to September 2011 the Massie Chair produced nineteen (19) publications, (including 3 books), five (5) presentations and three (3) international conferences abstracts. A total of fourteen (14) undergraduates and (6) graduate students acquired research experience. Two Ph.D. students presented their dissertations on topics related to nuclear energy and graduated as follows: María Cotto (May 2009) and Eric Calderón (May 2011). Five of the participating undergraduate students graduated: Ramon Polanco (BSME, May 2009), Jason Pérez (BSEE, May 2008), Rafael Colón (BSME, May 2008), Jessenia Marfisi (BS Chemistry, May 2008). Eleven (11) students were sent to National Laboratories (LANL, SNL and LLNL), NNSA and DoE facilities for summer

  18. Impacts of trawling on benthic macro-fauna and -flora of the Spencer Gulf prawn fishing grounds

    Science.gov (United States)

    Svane, Ib; Hammett, Zoe; Lauer, Peter

    2009-05-01

    The overall effects of trawling on benthic habitats and their assemblages are dependent on the distribution and intensity of trawl effort. The benthic habitats of the Spencer Gulf prawn trawling grounds are subjected to known variable levels of trawling disturbance recorded from fisher's logbooks. These habitats have not been quantitatively investigated. The aim of the study was firstly to characterise the macro-faunal and -floral assemblages and secondly, to comparatively assess trawl impact by testing the null hypothesis of no differences between five sites exposed to different intensity of trawl effort. The distribution and abundance of benthic macro-fauna and -flora were studied at two sampling resolutions by using beam trawl sampling (˜10,000 m 2) and underwater stereophotography (˜4.5 m 2) at five sites with different levels of trawl disturbance (effort). The results showed that the Spencer Gulf prawn trawling grounds are characterised by sandy sediments with a low content of silt and clay, with the exception of one site with very fine gravel. Biomass, abundance and cover of macro-fauna and -flora were generally low throughout, but with large differences among sites. Biomass, abundance and cover were found to be negatively correlated to both trawl hours from 1994-1998 and during the period of study. ANOSIM and SIMPER analyses using biomass, abundance and percentage cover as variables showed significant differences between sites with eight species or taxonomic groups contributing more than 10% to the observed similarity within sites. The two northern sites were dominated by sponges and the bearded mussel, Trichomya hirsutus, and the southern hammer oyster, Malleus meridianus. Other species that contributed to the similarity within sites were the ascidian, Polycarpa viridis, mobile epifauna (the blue swimmer crab, Portunus pelagicus, and the western king prawn, Penaeus (Melicertus) latisulcatus) and demersal fish species (Degens leatherjacket, Thamnaconus

  19. 喀斯特山地不同景观树种光合色素含量研究——以贵阳市郊区为例%Study on the Photosynthetic Pigment Content of Landscape Plants in Karst Mountain Area: Taking Suburb of Guiyang City as An Example

    Institute of Scientific and Technical Information of China (English)

    穆兵; 魏媛; 胡刚; 杨萍

    2012-01-01

    Benth.) Muell.-Arg., Bischofia polycarpa(Lcvl.)Airy Shaw, Acer ob-longum Wall, M. Maudiae Dunn, Bombax malabaricum DC, Mkhelia bodinieri Finet et Gagnep., Liriodendron chinensi s (Hemsl.)Sarg., and Magnolia denudata Desr. Had adaptability to the Karst habitats, which could also be selected to restore the landscape species for vegetation restoration in Karst mountain area.

  20. DOE Chair of Excellence in Environmental Disciplines-Final Technical Report

    Energy Technology Data Exchange (ETDEWEB)

    Kurunganty, Sastry; Loran, Roberto; Roque-Malherbe, Rolando; Hijazi, Yazan; Nieto, Santander; Gomez, Will A.; Duconge, Jose; Cotto, María del C.; Muniz, Carlos; Diaz, Francisco J.; Neira, Carlos F.; Marquez, Francisco; Del Valle, W.; Thommes, M.

    2014-02-19

    Characterization of low Refractive Index Aerogel Silica for Cherenkov Counters- Dr. Rolando Roque-Malherbe Sub-project PI, Dr. Jose Duconge Sub-project Co-PI, Dr. Santander Nieto Assistant Researcher, Francisco Diaz and Carlos Neira Associate Researchers. The initial aim of this sub-project was changed to the synthesis and characterization of extremely high specific surface area aerogel silica for gas storage. A high specific surface area silica gel that has applications in gas drying, cleaning operation useful in nuclear industry in process was developed. Sub-Project 2: Investigation Study of Magnetic and Electronic Transport Properties at Material Interfaces in Magnetic Multilayer Heterostructure using Gd. – Dr. Yazan Hijazi, Sub-project Co-PI. UT developed the capability and infrastructure to produce high quality thin-film magnetic films and magnetic multilayer structures with fine control over film quality and thickness using sputter deposition capability to perform in-house electric and magnetic characterization of these films. The research experimentally quantified the effect of Gd incorporation within the magnetic multilayer structure and produce magnetic media with exchanged decoupled multilevel magnetic anisotropy. From September 2006 to September 2011 the Massie Chair produced nineteen (19) publications, (including 3 books), five (5) presentations and three (3) international conferences abstracts. A total of fourteen (14) undergraduates and (6) graduate students acquired research experience. Two Ph.D. students presented their dissertations on topics related to nuclear energy and graduated as follows: María Cotto (May 2009) and Eric Calderón (May 2011). Five of the participating undergraduate students graduated: Ramon Polanco (BSME, May 2009), Jason Pérez (BSEE, May 2008), Rafael Colón (BSME, May 2008), Jessenia Marfisi (BS Chemistry, May 2008). Eleven (11) students were sent to National Laboratories (LANL, SNL and LLNL), NNSA and DoE facilities for summer

  1. 中国各地不同枣树品种上枣疯病植原体的PCR检测及分子变异分析%Molecular detection and variability of jujube witches'-broom phytoplasmas from different cultivars in various regions of China

    Institute of Scientific and Technical Information of China (English)

    徐启聪; 田国忠; 王振亮; 孔繁华; 李永; 王合

    2009-01-01

    [Objective] Jujube witches'-broom is an important disease in jujube cultivation areas, which causes serious losses in jujube fruit production. To understand the genetic variability and diversity of jujube witches'-broom phytoplasma population from the different cultivars and various regions of China. [Method] We collected 32 samples from 14 cultivars or wild sour jujubes in 7 regions of China and detected them with PCR with the primers RI6mF2/R16mR1 for phytoplasma 16S rDNA, SRI/SR for16S23SrRNA space region (SR) and FDgf/r for secretion proteins (secY). The direct sequencing of PCR products and sequencing by cloned PCR products were used for sequence polymorphism and phylogenetic analyses by comparison to the databases of known conserved gene sequences. [Results] We detected phytoplasmas by PCR amplification of 16SrDNA from all the diseased jujube samples. All the phytoplasma isolates infected various jujube cuhivars belonged to subgroup 16SrV-B of elm yellows group and had closer homology with Bischofia polycarpa witches'-broom and cherry lethal yellows phytoplasmas occurred in China than other 16SrV phytoplasmas in other countries. The sequence polymorphism at different extent in 16SrDNA, SR and secY gene and genetic diversity were revealed in phytoplnsma strain population related to different habitats, among which the dominant strains were always detected by the direct sequencing of PCR products in all the diseased areas of China. The degree of variability on secY gene of collected phytoplasma strains was greater than that of 16SrDNA and SR sequences, and some base substitutions could not alter encoded amino acid, however certain single base deletions detected in a Shandong and a Beijing strains may have impact on the gene structure or function. [Conclusion] Phytoplasma strains from different cultivars and regions show dramatic genetic diversity. Compared with direct sequencing of PCR products, the sequencing by cloning PCR products was more useful for the

  2. Complete sequence of a full-length DNA and molecular characterization of one plasmid from chinaberry (Melia azedarach Z) witches'-broom phytoplasma%苦楝丛枝植原体质粒的测定与分子特征

    Institute of Scientific and Technical Information of China (English)

    宋传生; 林彩丽; 田国忠; 赵文军; 朱水芳; 牟海青; 胡佳续; 王曦茁; 郭民伟

    2011-01-01

    [ Objective ] To clone plasmid from chinaberry witches'-broom phytoplasma and analyse its molecular characterization. [Methods] Fragments of one plasmid (pCWBFq) in chinaberry witches'-broom phytoplasma-Fuqing strain ( CWBFq) were amplified with primer pairs which were designed according to plasmid sequences published on NCBI. Transmembrane domain and subcellular localization predictions of proteins encoded by the plasmid pCWBFq as well as phylogenetic analysis among the plasmid sequences were completed by using bioinformatic softwares. Southern blot analysis was performed to detect the plasmids existed in CWBFq and several other phytoplasmas with the pCWBFq repA probe. [ Results] One complete plasmid was sequenced from CWBFq. pCWBFq comprised 4446 bp and had a nucleotide content of 73. 5% A + T and encoded six proteins. Protein P2, P3, P4 and P5 of pCWBFq contained 3,2,1 and 2 tranmembrane domains respectively, and their predicted signal peptide values were 0.989, 0.505, 0.918 and 0.914 respectively. Homologous comparison showed that RepA homology between pCWBFq and other phytoplasmas was between 9. 6% -85. 6% , however, the homology of different SSB proteins was between 74. 0% - 89. 4% . Southern blotting withpCWBFq repA probe confirmed the existence of the plasmids in CWBFq. In addition, The hybridizations occurred with paulownia witches'-broom phytoplasma-Nanyang strain ( PaWBNy ) , periwinkle virescence phytoplasma-Hainan stanin (PeVHn) , chinaberry witches'-broom phytoplasma-Fuzhou strain ( CWBFz) and mulberry dwarf phytoplasma -Puyang strain (MDPy) , whereas, no hybridizarions occurred with jujube witches'-broom phytoplasma-Beijing strain ( JWBBj) , cherry lethal yellows phytoplasma-Xichang strain (CLYXc) and Bischofia polycarpa witches'-broom phytoplasma-Nanchang strain ( BiWBNc ). [ Conclusion ] The plasmid encoded a replication associated protein ( RepA) and a single-stranded DNA binding protein ( SSB) , which were for the replication of plasmid. Four