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Sample records for antennarius striatus shaw

  1. LICHEN STRIATUS – CASE REPORTS

    Directory of Open Access Journals (Sweden)

    Caius Solovan

    2013-07-01

    Full Text Available Lichen striatus is an acquired linear inflammatory dermatosis, not frequently reported, with a peculiar clinical aspect, most often described in adults, with a poor response to treatment. We described 4 cases of lichen striatus diagnosed over an 8-month period of time.

  2. Shaw on Hamlet

    Science.gov (United States)

    Dukore, Bernard F.

    1971-01-01

    Shaw's preoccupation with Hamlet resonates in his creative writing. Article documents this statement not only by examining his novels and plays but by searching through prefaces, postscripts, reviews, letters, speeches, etc. that span Shaw's lifetime. (Author/RB)

  3. CAS Mathematician Receives Shaw Prize

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ WU Wentsun (WU Wenjun), a CAS Member from the Academy of Mathematics and System Sciences, has been honored with the 2006 Shaw Prize in Mathematical Sciences for his contributions to the new interdisciplinary field of mathematics and mechanization.

  4. Josh Billings (Henry Wheeler Shaw).

    Science.gov (United States)

    Kesterson, David B.

    Designed for use by the general reader, the college student, and the teacher, this book analyzes the life and literary career of Josh Billings (Henry Wheeler Shaw), emphasizing his literary ventures and artistic talents. The analysis reveals Billings' talents as a subtle humorist, homespun philosopher, and artist of the essay. Chapters include…

  5. Channa striatus capsules induces cytokine conversion in pulmonary tuberculosis patients

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    Novita Paliliewu

    2013-06-01

    Full Text Available Objective: This study aimed to investigate whether Channa striatus capsule induces sputum and cytokine conversion in pulmonary tuberculosis (TB patients. Methods: Randomized, placebo-controlled, double-blind pilot study was conducted to pulmonary TB patients who admitted to Department of Internal Medicine, Faculty of Medicine, University of Sam Ratulangi, Manado, North Sulawesi, Indonesia. A total of 36 pulmonary TB patients were randomly divided into two equal groups (n = 18 including one group received standart antituberculosis drugs plus Channa striatus capsule and another group received standart antituberculosis drugs plus placebo. Channa striatus capsule was given at a dose of 2 g each time, 3 times per day, for 12 weeks. The levels of tumor necrosis factor (TNF-α, interferon (IFN-γ, and interleukin (IL-10 were analyses using enzyme linked immunosorbent assay (ELISA method. Results: The rate of positive sputum smear decline was more pronounced in the Channa striatus group but did not reach statistically different value between groups. The levels of TNF-α, IFN-γ, and IL-10 were not significantly different in Channa striatus group compared to placebo group at baseline (week 0. But at week 12, the supplementation of Channa striatus capsule significantly decreased TNF-α, IFN-γ, and IL-10 levels compared to baseline. In placebo groups, there were no significant differences for IL-10 levels at week 12, but the levels of TNF-α and IFN-γ significantly decreased. Conclusion: Adjunctive supplementation of Channa striatus capsules accelerated the beneficial therapeutic effect of TB chemotherapy by improving cytokine response. [J Exp Integr Med 2013; 3(3.000: 237-242

  6. Lichen Striatus in a UVB Treated Adult Psoriasis Patient

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    Pınar Özuğuz

    2014-06-01

    Full Text Available Lichen striatus is a self-limited lichenoid eruption that follows Blaschko’s lines. It is particularly common in children and rarely seen in adults. Cases related to atopic diathesis are common, besides it is reported among family members. Viral infections, vaccines and trauma related cases are also present. Various environmental stimuli in the setting of genetic predisposition may play a role. We herein, reported a forty eight year-old woman who developed lichen striatus eruptions in her arm and trunk while she was receiving UVB treatment with maintenance dose for psoriasis. Phototherapy might act as a stimulant with its immunosuppressive and traumatic effects.

  7. Shaw's Comedy, Language Arts: 5113.90.

    Science.gov (United States)

    Dade County Public Schools, Miami, FL.

    This guide provides the teacher with strategies to aid students in examining five representative plays by Bernard Shaw and in comparing his comedy with the comic art of Oscar Wilde, Richard Sheridan, Ben Jonson, and William Shakespeare. Performance objectives include isolating elements which pertain to the life and times of Shaw, delineating…

  8. Cryotherapy for Lichen Striatus in an Adult – a Case Report

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    Stojanović Slobodan

    2015-12-01

    Full Text Available Lichen striatus (linear lichenoid dermatosis is an uncommon, self-limited, inflammatory, linear skin condition of unknown origin. The causes of linear distribution are unknown, though the pattern of lichen striatus (LS mostly follows the lines of Blaschko (BL. The condition most commonly occurs in children between 5 and 15 years of age, usually after the first year of life.

  9. Líquen estriado no adulto Lichen striatus on adult

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    Leticia Fogagnolo

    2011-02-01

    Full Text Available Líquen estriado é uma erupção inflamatória incomum, de etiologia desconhecida. Raramente acomete adultos, e é caracterizada pelo surgimento abrupto de pápulas coalescentes, em arranjo linear, usualmente em extremidades. A histopatologia mostra reação liquenóide envolvendo folículos e glândulas. Ocasionalmente há sobreposição com líquen plano linear e "blaschkitis", seus principais diagnósticos diferenciais. Relata-se um caso de mulher adulta com pápulas eritematovioláceas em região cervical e hemiface direitas, cuja correlação clínico-histopatológica permitiu o diagnóstico de líquen estriado. Os achados atípicos e a dificuldade diagnóstica são discutidos.Lichen Striatus is an uncommon inflammatory skin eruption of unknown etiology. It rarely affects adults, and it is characterized by abrupt onset of coalescent papules, in a linear disposition, usually on the extremities. Histopathology shows lichenoid reaction involving follicles and glands. Occasionally, there is overlap with linear lichen planus and "blaschkitis", the main differential diagnoses. It is reported here the case of an adult woman with erythematous violaceous papules on the right side of the neck and face, diagnosed with lichen striatus by clinical and histopathological correlation. The atypical findings and the diagnostic difficulty are discussed.

  10. Lichen striatus associated with psoriasis vulgaris treated with oral acitretin

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    Enzo Errichetti

    2014-01-01

    Full Text Available Lichen striatus (LS is an uncommon dermatosis of unknown etiology that presents as a continuous or interrupted linear band of pink, tan, red or skin-colored papules in a blaschkoid distribution. The lesions are generally solitary and unilateral, but unusual extensive cases with multiple and bilateral lesions have been also described. Albeit LS is typically an asymptomatic and self-limited dermatosis, it may cause a significant psychological distress in some patients, thus requiring an appropriate therapy. Topical steroid is the most commonly used treatment but it is not always effective. We report a case of LS unresponsive to topical steroid therapy associated with psoriasis vulgaris successfully treated with oral acitretin.

  11. The Effect of Channa striatus (Haruan Extract on Pain and Wound Healing of Post-Lower Segment Caesarean Section Women

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    Siti Zubaidah Ab Wahab

    2015-01-01

    Full Text Available Channa striatus has been consumed for decades as a remedy to promote wound healing by women during postpartum period. The objectives of this study were to compare postoperative pain, wound healing based on wound evaluation scale (WES, wound cosmetic appearance based on visual analogue scale (VAS scores and patient satisfaction score (PSS, and safety profiles between C. striatus group and placebo group after six weeks of lower segment caesarean section (LSCS delivery. A randomised, double-blind, placebo-controlled study was conducted. Subjects were randomised in a ratio of 1 : 1 into either the C. striatus group (500 mg daily or placebo group (500 mg of maltodextrin daily. 76 subjects were successfully randomised, with 38 in the C. striatus group and 35 in the placebo group. There were no significant differences in postoperative pain p=0.814 and WES p=0.160 between the C. striatus and placebo groups. However, VAS and PSS in the C. striatus group were significantly better compared with the placebo group (p=0.014 and p<0.001, resp.. The safety profiles showed no significant differences between the groups. In conclusion, six-week supplementation of 500 mg of C. striatus extract showed marked differences in wound cosmetic appearance and patient’s satisfaction and is safe for human consumption.

  12. Shaw Prize Goes to Reinhard Genzel

    Science.gov (United States)

    2008-06-01

    The Shaw Prize in Astronomy for 2008 is awarded to Professor Reinhard Genzel, Director of the Max Planck Institute for Extraterrestrial Physics (MPE), in recognition of his outstanding contribution in demonstrating that the Milky Way contains a supermassive black hole at its centre, a result largely obtained with the help of ESO's telescopes. Black Hole ESO PR Photo 18/08 Motion of a Star The Shaw Prize is awarded annually by the Shaw Prize Foundation in Hong Kong in the Life Sciences, Mathematical Sciences and Astronomy, each of the three prizes bearing a monetary award of one million US dollars. "I warmly congratulate Professor Genzel for this well-deserved award which highlights some of the best science produced with ESO's telescopes," says Tim de Zeeuw, ESO's Director General. "Professor Genzel and his team have made a dedicated, long-term effort, using our telescopes and co-developing instruments, to study the Centre of our Galaxy, and as such, he has allowed us to enter an era of observational black hole physics." In 1969, Donald Lynden-Bell and Martin Rees suggested that the Milky Way might contain a supermassive black hole at its centre. But evidence for such an object was lacking at the time because the centre of the Milky Way is obscured by interstellar dust, and was detected only as a relatively faint radio source. Reinhard Genzel and his collaborators obtained compelling evidence for this black hole by developing state-of-the-art astronomical instruments to be used on ESO's telescopes and carrying out a persistent programme of observing the Galactic Centre and its surrounding stars for many years, which ultimately led to the discovery of a black hole with a mass of about three million times that of the Sun. Genzel's group has in particular followed since 1992, the motion of several stars, around the Galactic Centre. These observations were first done with the MPE-built near-infrared speckle imaging camera SHARP on ESO's New Technology Telescope at La

  13. Meals for two: foraging activity of the butterflyfish Chaetodon Striatus (perciformes in southeast Brazil

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    R. M. Bonaldo

    Full Text Available The banded butterflyfish (Chaetodon striatus from the tropical and subtropical western Atlantic is a territorial, diurnal forager on benthic invertebrates. It is usually seen moving singly or in pairs, a few meters above the sea floor. We studied the foraging activity of C. striatus on rocky reefs in southeastern Brazil. This fish spent about 11 h and 30 min per day on feeding activities, and preferred colonies of non-scleratinian anthozoans over sandy and rocky substrata while foraging. The lowest feeding rates were recorded in the early morning and late afternoon, but we found no further differences between feeding rates throughout the day. We also found no differences between the feeding rates of paired and single individuals.

  14. Bilateral onychodystrophy in a boy with a history of isolated lichen striatus.

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    Amer, Ahdi

    2014-11-01

    Lichen striatus (LS) is a relatively rare and self-limited linear dermatosis of unknown etiology. It primarily affects children, with more than 50% of cases occurring in patients aged 5 to 15 years. The case of a 2-year-old boy who presented for evaluation of a nonpruritic linear rash on the left side of the lower abdomen of 3 weeks' duration is discussed. A diagnosis of lichen striatus (LS) was made and the lesions completely resolved within 6 months. At 5 years of age, the patient returned for evaluation of bluish discoloration and thinning of the nails on the left middle and ring fingers, which ultimately fell off and started to regrow 2 months prior to the second evaluation. The rare diagnosis of isolated onychodystrophy as a late manifestation of LS was made.

  15. Kinetic characterization of Channa striatus muscle sarcoplasmic and myofibrillar protein hydrolysates

    OpenAIRE

    Ghassem, Masomeh; Fern, See Siau; Said, Mamot; Ali, Zainon Mohd; Ibrahim, Saadiah; Babji, Abdul Salam

    2011-01-01

    This study was conducted to evaluate the kinetic characteristics of proteolytic activity of proteases on Channa striatus protein fractions. Degree of hydrolysis (DH), amino acid composition and kinetic parameters of sarcoplasmic and myofibrillar proteins were investigated when incubated with proteinase K and thermolysin, separately. After 30 min incubation with proteases, a decrease in DH of sarcoplasmic protein was observed whereas, hydrolysis of myofibrillar protein with proteases took 2 h ...

  16. Genetic variability and social structure of colonies in Acromyrmex heyeri and A. striatus (Hymenoptera: Formicidae

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    E. DIEHI

    Full Text Available The breeding structure of both colony and population of social insects can be examined by genetic analysis. Colonies of the leaf-cutting ants Acromyrmex heyeri and A. striatus (Myrmicinae, Attini were thus analyzed for isoenzyme systems MDH, a-GPDH, and AMY to describe genotype variability and social structure. A total of five loci were investigated (three for amylase and one for each other system. Ninety-seven colonies of A. heyeri and 103 of A. striatus were sampled in different localities in Southern Brazil (State of Rio Grande do Sul. The genotypes found show the occurrence of monogyny and polygyny associated or not with polyandry, which indicates that the social organization is colony-specific. The polygyny and polyandry observed are likely to be responsible for the great genotypic diversity of the colonies. The average inbreeding coefficient per colony was higher in A. striatus than in A. heyeri, which may reflect the different patterns of production of sexual individuals and nuptial flight of those two species.

  17. George Bernard Shaw's "Androcles and the Lion": A Postmodernist Study

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    Hooti, Noorbakhsh; Jeihouni, Mojtaba

    2012-01-01

    This study makes an attempt to analyze the manifold aspects of Shaw's "Androcles and the Lion" on a postmodernist standpoint, meanwhile, demonstrates the dominion of modernism, which is portrayed through the vehicle of comedy with a bitter ironic language through the play. Regardless of the historical period in which the play occurs, the…

  18. A numerical study of unstable Hele-Shaw flow

    DEFF Research Database (Denmark)

    Hansen, Erik Bent; Rasmussen, Henning

    1999-01-01

    A numerical procedure which is based on an integral equation for the normal velocity at the interface is developed for the unstable flow with surface tension in a Hele-Shaw cell. The procedure has been validated by comparing solutions obtained by it with published results. It has also been applie...

  19. Growth and production of Donax striatus (Bivalvia: Donacidae) from Las Balsas beach, Gibara, Cuba.

    Science.gov (United States)

    Ocaña, Frank A

    2015-09-01

    Clams of the genus Donax are worldwide the dominating group of the invertebrate community on sandy beaches. They are primary consumers that provide a significant abundance and biomass to the ecosystem. In the Caribbean, Donax striatus has an important role for nature and human, nonetheless studies on the population dynamics of this beach clam are scarce and no information exists on secondary production of this species. Growth parameters and secondary production of D. striatus were estimated from February 2008 to November 2009 at Las Balsas beach, Northeastern Cuba, in order to provide basic information for management purposes. In each month 45 samples were taken by means of a PVC corer of 0.025 m2 area and sieved with a 1 mm mesh. Animals were measured and weighted with and without shell. A total of 5 471 specimens were collected during the sampling period. Shell length ranged from 2.7-33.3 mm. Growth parameters estimated from length frequency data were L∞ = 36.1 mm, K= 0.8/yr and t0= 0.2/yr. The growth performance resulted in values of Φ'= 3.02. Life span was 2.4 yrs and mortality rate was 3.07 /yr. In 2008, mean abundance of D. striatus ranged between 17.1 - 770.7 ind./m2. In 2009 the lowest mean abundance was 34.4 and the highest was 892.5 ind./m2. During 2009 biomass and production was more than twice higher in comparison with 2008. Individual production showed highest values in the 24 mm shell size (3.74 g/m2.yr) and 25 mm (0.71 g/m2.yr), considering mass with shell and without shell, respectively. During 2009 abundance of individuals with 15 mm shell length or more increased resulting in higher biomass and production, compared to 2008. Using the conversion factor of wet mass to ash free dry mass (AFDM), annual production ranged between 2.87-6.11 g AFDM/m2.yr, resulting in a turnover rate (P/B) between 5.11 and 3.47 in 2008 and 2009, respectively. The rapid growth and high turnover rate of D. striatus suggest a rapid recovery of the population. These

  20. Hyperbolic prisms and foams in Hele-Shaw cells

    Energy Technology Data Exchange (ETDEWEB)

    Tufaile, A., E-mail: tufaile@usp.br [Soft Matter Laboratory, Escola de Artes, Ciencias e Humanidades, Universidade de Sao Paulo, 03828-000, Sao Paulo (Brazil); Tufaile, A.P.B. [Soft Matter Laboratory, Escola de Artes, Ciencias e Humanidades, Universidade de Sao Paulo, 03828-000, Sao Paulo (Brazil)

    2011-10-03

    The propagation of light in foams creates patterns which are generated due to the reflection and refraction of light. One of these patterns is observed by the formation of multiple mirror images inside liquid bridges in a layer of bubbles in a Hele-Shaw cell. We are presenting the existence of these patterns in foams and their relation with hyperbolic geometry and Sierpinski gaskets using the Poincare disk model. The images obtained from the experiment in foams are compared to the case of hyperbolic optical elements. -- Highlights: → The chaotic scattering of light in foams generating deltoid patterns is based on hyperbolic geometry. → The deltoid patterns are obtained through the Plateau borders in a Hele-Shaw cell. → The Plateau borders act like hyperbolic prism. → Some effects of the refraction and reflection of the light rays were studied using a hyperbolic prism.

  1. Ultrastructure of the spermatozoa of Psammotettix striatus (Linnaeus) and Exitianus nanus (Distant) (Hemiptera: Auchenorrhyncha: Cicadellidae: Deltocephalinae).

    Science.gov (United States)

    Su, Mei; Dietrich, Christopher H; Zhang, Yalin; Dai, Wu

    2014-11-01

    Previous studies of insect spermatozoa indicate that these specialized cells have undergone significant morphological evolution and exhibit traits useful for reconstructing phylogenetic relationships. Although leafhoppers (Cicadellidae) are among the largest and most economically important insect families, few comparative studies of their spermatozoa have been published. Here, the ultrastructure of mature spermatozoa of two leafhoppers Psammotettix striatus (Linnaeus) and Exitianus nanus (Distant), representing two different tribes of the largest leafhopper subfamily, Deltocephalinae, was examined by light and transmission electron microscopy. The shape and ultrastructure of spermatozoa of the two species are very similar to those of other Cicadellidae as well as other Auchenorrhyncha, comprising a conical acrosome invaginated to form a subacrosomal space, a filiform homogeneously condensed nucleus, a lamellate centriolar adjunct connecting the nucleus with the mid-piece/flagellum, a long flagellum with a 9 + 9 + 2 axoneme pattern and two symmetrical mitochondrial derivatives with an orderly array of peripheral cristae, and two drop-shaped accessory bodies. They may be distinguished by the size of the sperm, and the shape of the nucleus, accessory bodies, and paracrystalline region of mitochondrial derivatives. The fine morphology and ultrastructure of spermatozoon in P. striatus and E. nanus are illustrated, along with a brief discussion of the implications for classification and phylogenetic analyses of the subfamily.

  2. Mixing foams and grains in Hele-Shaw cells

    Energy Technology Data Exchange (ETDEWEB)

    Tufaile, A P B; Tufaile, A; Haddad, T A S, E-mail: tufaile@usp.b [Escola de Artes, Ciencias e Humanidades da Universidade de Sao Paulo, R. Arlindo Bettio, 1000, 03828-000, Sao Paulo (Brazil)

    2010-09-01

    We have observed some features of the coexistence of foams and granular materials in Hele-Shaw cells. The most part of the liquid and granular material stays at the bottom of the cell, with only a small quantity of the mixture resting on the froth. The fractal dimensions of the final states of the foams are close to the values obtained from the Random Apollonian Packing model. The disperse structure of the granular material affects the probability distribution of number of sides of the foam bubbles. The nearest neighbor distances between the peaks of the sand piles at the bottom of the cell are close to a lognormal distribution.

  3. Kinetic characterization of Channa striatus muscle sarcoplasmic and myofibrillar protein hydrolysates.

    Science.gov (United States)

    Ghassem, Masomeh; Fern, See Siau; Said, Mamot; Ali, Zainon Mohd; Ibrahim, Saadiah; Babji, Abdul Salam

    2014-03-01

    This study was conducted to evaluate the kinetic characteristics of proteolytic activity of proteases on Channa striatus protein fractions. Degree of hydrolysis (DH), amino acid composition and kinetic parameters of sarcoplasmic and myofibrillar proteins were investigated when incubated with proteinase K and thermolysin, separately. After 30 min incubation with proteases, a decrease in DH of sarcoplasmic protein was observed whereas, hydrolysis of myofibrillar protein with proteases took 2 h with an increase in DH. The major amino acids were glutamic acid (16.6%) in thermolysin- myofibrillar hydrolysate followed by aspartic acid (11.1%) in sarcoplasmic protein fraction with no enzyme treatment and lysine (10%) in thermolysin-myofibrillar hydrolysate. The apparent Michaelis constant of proteinase K was lower than thermolysin for both sarcoplasmic and myofibrillar proteins. However, rate of turnover and enzyme efficiency suggested that sarcoplasmic and myofibrillar proteins are suitable substrates for proteinase K and thermolysin hydrolytic reaction, respectively.

  4. 78 FR 9431 - Shaw AREVA MOX Services, LLC (Mixed Oxide Fuel Fabrication Facility); Order Approving Indirect...

    Science.gov (United States)

    2013-02-08

    ... COMMISSION [NRC-2011-0081; Docket No. 70-3098; Construction Authorization No. CAMOX-001] Shaw AREVA MOX... Construction Authorization I Shaw AREVA MOX Services, LLC (MOX Services) holds Construction ] Authorization (CA) CAMOX-001 for construction of a Mixed Oxide (MOX) Fuel Fabrication Facility (MFFF) at the...

  5. 76 FR 22735 - Shaw AREVA MOX Services, Mixed Oxide Fuel Fabrication Facility; License Amendment Request, Notice...

    Science.gov (United States)

    2011-04-22

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Shaw AREVA MOX Services, Mixed Oxide Fuel Fabrication Facility; License Amendment Request, Notice.... Introduction The NRC has received, by letter dated February 8, 2011, an amendment request from Shaw AREVA...

  6. Coagulation profile, gene expression and bioinformatics characterization of coagulation factor X of striped murrel Channa striatus.

    Science.gov (United States)

    Arasu, Abirami; Kumaresan, Venkatesh; Sathyamoorthi, Akila; Arasu, Mariadhas Valan; Al-Dhabi, Naif Abdullah; Arockiaraj, Jesu

    2016-08-01

    A transcriptome wide analysis of the constructed cDNA library of snakehead murrel Channa striatus revealed a full length cDNA sequence of coagulation factor X. Sequence analysis of C. striatus coagulation factor X (CsFX) showed that the cDNA contained 1232 base pairs (bp) comprising 1209 bp open reading frame (ORF). The ORF region encodes 424 amino acids with a molecular mass of 59 kDa. The polypeptide contains γ-carboxyglutamic acid (GLA) rich domain and two epidermal growth factor (EGF) like domains including EGF-CA domain and serine proteases trypsin signature profile. CsFX exhibited the maximum similarity with fish species such as Stegastes partitus (78%), Poecilia formosa (76%) and Cynoglossus semilaevis (74%). Phylogenetically, CsFX is clustered together with the fish group belonging to Actinopterygii. Secondary structure of factor X includes alpha helix 28.54%, extended strand 20.75%, beta turn 7.78% and random coil 42.92%. A predicted 3D model of CsFX revealed a short α-helix and a Ca(2+) (Gla domain) binding site in the coil. Four disulfide bridges were found in serine protease trypsin profile. Obviously, the highest gene expression (P < 0.05) was noticed in blood. Further, the changes in expression of CsFX was observed after inducing with bacterial (Aeromonas hydrophila) and fungal (Aphanomyces invadans) infections and other synthetic immune stimulants. Variation in blood clotting time (CT), prothrombin time (PT) and activated prothromboplastin time (APTT) was analyzed and compared between healthy and bacterial infected fishes. During infection, PT and APTT showed a declined clotting time due to the raised level of thrombocytes.

  7. Perturbation theorems for Hele-Shaw flows and their applications

    CERN Document Server

    Lin, Yu-Lin

    2010-01-01

    In this work, we give a perturbation theorem for strong polynomial solutions to the zero surface tension Hele-Shaw equation driven by injection or suction, so called the Polubarinova-Galin equation. This theorem enables us to explore properties of solutions with initial functions close to but are not polynomial. Applications of this theorem are given in the suction or injection case. In the former case, we show that if the initial domain is close to a disk, most of fluid will be sucked before the strong solution blows up. In the later case, we obtain precise large-time rescaling behaviors for large data to Hele-Shaw flows in terms of invariant Richardson complex moments. This rescaling behavior result generalizes a recent result regarding large-time rescaling behavior for small data in terms of moments. As a byproduct of a theorem in this paper, a short proof of existence and uniqueness of strong solutions to the Polubarinova-Galin equation is given.

  8. Establishment and characterization of a continuous cell line from thymus of striped snakehead, Channa striatus (Bloch 1793).

    Science.gov (United States)

    Sood, Neeraj; Chaudhary, D K; Pradhan, P K; Verma, D K; Raja Swaminathan, T; Kushwaha, B; Punia, P; Jena, J K

    2015-09-01

    The establishment and characterization of a continuous cell line from the thymus of air-breathing fish Channa striatus are described. The cell line, designated C. striatus thymus (CST), has been subcultured over 71 times and shows optimal growth at 28°C in Leibovitz's-15 (L-15) medium supplemented with 20% fetal bovine serum. The CST cells exhibited low plating efficiency which improved with increase in seeding density. The karyotype analysis revealed that CST cells have a normal diploid karyotype with 2n = 40. Partial amplification and sequencing of two mitochondrial genes, viz. 16S ribosomal RNA (rRNA) and cytochrome oxidase I, confirmed that the cell line originated from C. striatus. CST cells were successfully transfected indicating their potential application for expression of recombinant proteins. In immunocytochemical staining, CST cells showed characteristics of epithelial cells. These cells were sensitive to extracellular products of Vibrio cholerae MTCC 3904 as well as to heavy metal mercuric chloride. The CST cell line would be a useful tool in functional genomic studies such as RNA interference and gene knockout as well as for cytotoxicity studies.

  9. Plant population and habitat characteristics of the endemic Sonoran Desert cactus Peniocereus striatus in Organ Pipe Cactus National Monument, Arizona

    Science.gov (United States)

    Anderson, Greta; Rutman, Sue; Munson, Seth M.

    2010-01-01

    Peniocereus striatus (Brandegee) Buxb. (Cactaceae) is an endemic Sonoran Desert cactus that reaches its northern range limit in southwestern Arizona. One U.S. population occupies a small area of Organ Pipe Cactus National Monument near the U.S./Mexico international boundary, which has been monitored since 1939. An extensive survey conducted in 2002, covering 177 ha, resulted in the discovery of 88 new plants, in addition to the relocation of 57 plants found in previous surveys. Despite potential increases in population size and spatial distribution, mean plant height and number of basal stems has not significantly changed in recent years. Bud scars revealed that a majority of the population was sexually mature. Peniocereus striatus occurrence increased with decreasing slope, spanned every slope aspect, and was highest on rocky soils, but was noticeably low on west and northwest slopes and areas where severe land degradation had previously occurred. Over half of P. striatus plants were nursed by shrubs and subshrubs, while 40% occurred under leguminous trees. A severe frost in January 2002 top-killed 19% of the population, with the greatest damage in drainage bottoms. However, long-term (1944–2002) climate records show that there has been an overall increase in the number of frost free days in the region, which, coupled with land use change, has implications for the future health of this population.

  10. Integrating Paleodistribution Models and Phylogeography in the Grass-Cutting Ant Acromyrmex striatus (Hymenoptera: Formicidae) in Southern Lowlands of South America.

    Science.gov (United States)

    Cristiano, Maykon Passos; Clemes Cardoso, Danon; Fernandes-Salomão, Tânia Maria; Heinze, Jürgen

    2016-01-01

    Past climate changes often have influenced the present distribution and intraspecific genetic diversity of organisms. The objective of this study was to investigate the phylogeography and historical demography of populations of Acromyrmex striatus (Roger, 1863), a leaf-cutting ant species restricted to the open plains of South America. Additionally, we modeled the distribution of this species to predict its contemporary and historic habitat. From the partial sequences of the mitochondrial gene cytochrome oxidase I of 128 A. striatus workers from 38 locations we estimated genetic diversity and inferred historical demography, divergence time, and population structure. The potential distribution areas of A. striatus for current and quaternary weather conditions were modeled using the maximum entropy algorithm. We identified a total of 58 haplotypes, divided into five main haplogroups. The analysis of molecular variance (AMOVA) revealed that the largest proportion of genetic variation is found among the groups of populations. Paleodistribution models suggest that the potential habitat of A. striatus may have decreased during the Last Interglacial Period (LIG) and expanded during the Last Maximum Glacial (LGM). Overall, the past potential distribution recovered by the model comprises the current potential distribution of the species. The general structuring pattern observed was consistent with isolation by distance, suggesting a balance between gene flow and drift. Analysis of historical demography showed that populations of A. striatus had remained constant throughout its evolutionary history. Although fluctuations in the area of their potential historic habitat occurred during quaternary climate changes, populations of A. striatus are strongly structured geographically. However, explicit barriers to gene flow have not been identified. These findings closely match those in Mycetophylax simplex, another ant species that in some areas occurs in sympatry with A. striatus

  11. Onset of Convection in a Nanofluid Layer Confined within a Hele-Shaw Cell

    Directory of Open Access Journals (Sweden)

    Dhananjay Yadav

    2016-01-01

    Full Text Available In this study, the onset of nanofluid convection confined within a Hele-Shaw cell is investigated by performing a classical linear stability analysis. The model used for nanofluid combines the effects of Brownian motion and thermophoresis, while for Hele-Shaw cell Brinkman model are employed. The new stability equations are formulated by introducing new characteristic dimensionless parameters such as the Hele-Shaw number, the Hele-Shaw Rayleigh number and the nanoparticle concentration Hele-Shaw Rayleigh number. The resulting stability equations are solved numerically by using higher order Galerkin method. It is found that the nanoparticle concentration Hele-Shaw Rayleigh number, the Lewis number and the modified diffusivity ratio hasten the onset of convection, while the Hele-Shaw number delays the onset of convection. A comparison is also made between the existing boundary conditions for nanoparticle and obtained that the zero nanoparticle flux boundary conditions under the thermophoretic effects has more destabilizing effect than the fixed nanoparticle boundary conditions.

  12. Breaking anchored droplets in a microfluidic Hele-Shaw cell

    CERN Document Server

    Amselem, Gabriel; Gallaire, François; Baroud, Charles N

    2015-01-01

    We study microfluidic self digitization in Hele-Shaw cells using pancake droplets anchored to surface tension traps. We show that above a critical flow rate, large anchored droplets break up to form two daughter droplets, one of which remains in the anchor. Below the critical flow velocity for breakup the shape of the anchored drop is given by an elastica equation that depends on the capillary number of the outer fluid. As the velocity crosses the critical value, the equation stops admitting a solution that satisfies the boundary conditions; the drop breaks up in spite of the neck still having finite width. A similar breaking event also takes place between the holes of an array of anchors, which we use to produce a 2D array of stationary drops in situ.

  13. Multiple steadily translating bubbles in a Hele-Shaw channel.

    Science.gov (United States)

    Green, Christopher C; Vasconcelos, Giovani L

    2014-03-01

    Analytical solutions are constructed for an assembly of any finite number of bubbles in steady motion in a Hele-Shaw channel. The solutions are given in the form of a conformal mapping from a bounded multiply connected circular domain to the flow region exterior to the bubbles. The mapping is written as the sum of two analytic functions-corresponding to the complex potentials in the laboratory and co-moving frames-that map the circular domain onto respective degenerate polygonal domains. These functions are obtained using the generalized Schwarz-Christoffel formula for multiply connected domains in terms of the Schottky-Klein prime function. Our solutions are very general in that no symmetry assumption concerning the geometrical disposition of the bubbles is made. Several examples for various bubble configurations are discussed.

  14. Multiple steadily translating bubbles in a Hele-Shaw channel

    CERN Document Server

    Green, Christopher C

    2013-01-01

    Analytical solutions are constructed for an assembly of any finite number of bubbles in steady motion in a Hele-Shaw channel. The solutions are given in the form of a conformal mapping from a bounded multiply connected circular domain to the flow region exterior to the bubbles. The mapping is written as the sum of two analytic functions---corresponding to the complex potentials in the laboratory and co-moving frames---that map the circular domain onto respective degenerate polygonal domains. These functions are obtained using the generalised Schwarz-Christoffel formula for multiply connected domains in terms of the Schottky-Klein prime function. Our solutions are very general in that no symmetry assumption concerning the geometrical disposition of the bubbles is made. Several examples for various bubble configurations are discussed.

  15. Immunological role of C4 CC chemokine-1 from snakehead murrel Channa striatus.

    Science.gov (United States)

    Bhatt, Prasanth; Kumaresan, Venkatesh; Palanisamy, Rajesh; Chaurasia, Mukesh Kumar; Gnanam, Annie J; Pasupuleti, Mukesh; Arockiaraj, Jesu

    2014-02-01

    In this study, we have reported a cDNA sequence of C4 CC chemokine identified from snakehead murrel (also known as striped murrel) Channa striatus (named as CsCC-Chem-1) normalized cDNA library constructed by Genome Sequencing FLX™ Technology (GS-FLX™). CsCC-Chem-1 is 641 base pairs (bp) long that contain 438 bp open reading frame (ORF). The ORF encodes a polypeptide of 146 amino acids with a molecular mass of 15 kDa. The polypeptide contains a small cytokine domain at 30-88. The domain carries the CC motif at Cys(33)-Cys(34). In addition, CsCC-Chem-1 consists of another two cysteine residues at C(59) and C(73), which, together with C(33) and C(34), make CsCC-Chem-1 as a C4-CC chemokine. CsCC-Chem-1 also contains a 'TCCT' motif at 32-35 as CC signature motif; this new motif may represent new characteristic features, which may lead to some unknown function that needs to be further focused on. Phylogenitically, CsCC-Chem-1 clustered together with CC-Chem-1 from rock bream Oplegnathus fasciatus and European sea bass Dicentrarchus labrax. Significantly (P<0.05) highest gene expression was noticed in spleen and is up-regulated upon fungus (Aphanomyces invadans), bacteria (Aeromonas hydrophila) and virus (poly I:C) infection at various time points. The gene expression results indicate the influence of CsCC-Chem-1 in the immune system of murrel. Overall, the gene expression study showed that the CsCC-Chem-1 is a capable gene to increase the cellular response against various microbial infections. Further, we cloned the coding sequence of CsCC-Chem-1 in pMAL vector and purified the recombinant protein to study the functional properties. The cell proliferation activity of recombinant CsCC-Chem-1 protein showed a significant metabolic activity in a concentration dependent manner. Moreover, the chemotaxis assay showed the capability of recombinant CsCC-Chem-1 protein which can induce the migration of spleen leukocytes in C. striatus. However, this remains to be verified

  16. Kooskõlas kompromissitu Shaw'ga / Lea Tormis ; kira pannud Madis Kolk

    Index Scriptorium Estoniae

    Tormis, Lea, 1932-

    2008-01-01

    B. Shaw näidendi "Pygmalion" põhjal tehtud Alan Jay Lerneri ja Frederick Loewe muusikalist "Minu veetlev leedi" - Ago-Endrik Kerge lavastusest Rahvusooperis Estonias 13. IV 2008 ja 1963. aasta Voldemar Panso lavastusest Estonias

  17. Environmental Assessment for Construction of Physical Security Improvements at Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2005-10-01

    Cyanocitta cristata), eastern towhee (Pipilo erythrophthalmus), and indigo bunting ( Passerina cyanea). Wetland-associated species include southern...Occurrence in Sumter County Occurrence at Shaw AFB Notes BIRDS (CONT.) Painted bunting Passerina ciris ciris SOC Possible Possible Open

  18. Best Practices Case Study: Shaw Construction Burlingame Ranch Ph.1, Aspen, CO

    Energy Technology Data Exchange (ETDEWEB)

    Pacific Northwest National Laboratory & Oak Ridge National Laboratory

    2010-12-01

    Shaw Construction built 84 energy efficient, affordable condominiums forthe City of Aspen that achieved HERS scores of less than 62 with help from Building America’s research team lead Building Science Corporation.

  19. Salutary value of haruan, the striped snakehead Channa striatus - a review.

    Science.gov (United States)

    Haniffa, Mohammed Abdul Kader; Sheela, Paul Asir Jeya; Kavitha, Kumaresan; Jais, Abdul Manan Mat

    2014-05-01

    Murrel namely Channa striatus or haruan contains all essential elements to maintain good health and to recover the lost energy after prolonged illness. The fatty acid composition (% of total fatty acid) indicated the abundant presence of C16:0 fatty acid as 30% and the other major fatty acids were C22:6 (15%), C20:4 (19%), C18:1 (12%) and C18:0 (15%). Haruan contains arachidonic acid (C20:4) as 19.0%, a precursor for prostaglandin and thromboxane biosyntheses. Both fatty and amino acids are important components for wound healing processes. Both the fillet and mucus extracts of haruan were found to exhibit a concentration dependent antinociceptive activity. In vitro antioxidant activity was higher in Channa roe protein hydrolysate than in Labeo roe protein hydrolysate in both DPPH radical scavenging and ferric reducing power. Protein content of roe concentrates (RPC) was found to be 90.2% (Channa) and 82.5% (Lates). Water absorption, oil absorption, foam capacity, stability and emulsifying capacity were found to be higher in Channa RPC than in Lates RPC. Characterization of protein hydrolysates from muscle and myofibrillar samples of haruan showed different kinetic and proteolytic activities. The skin extract of haruan influences the serotonergic receptor system thus they can function as an anti-depressant. Thus, haruan is the best example for food as medicine.

  20. Establishment, characterization and viral susceptibility of 3 new cell lines from snakehead, Channa striatus (Blooch).

    Science.gov (United States)

    Zhao, Zhengshan; Montgomery-Brock, Dee; Lee, Cheng-Sheng; Lu, Yuanan

    2003-01-01

    Three cell lines were established from muscle (SHMS), heart (SHHT) and swim bladder (SHSB) of snakehead (Channa striatus). The cells grew initially at 25 degrees C in L15 medium supplemented with 20% fetal bovine serum and have been subcultured 13-18 times since their initiation on June 25, 2002. Growth of the snakehead cells was serum-dependent and plating efficiencies ranged from 22-29%. These snakehead cells grew well in RPMI 1640 and L-15 media, which are commonly used for cultivation of animal and mammalian cells and retained 95.9-96.6% cell viability following storage for 4 months in liquid nitrogen. Karyotyping indicated that these snakehead-derived cell lines remained diploid with a chromosome count of 44 at their early passage (passage 8-14). These cell lines were sensitive to CCV, VHSV, SVCV, IPN and SHRV; they were refractory to IHNV. These newly established cell lines are currently being used for the investigation of snakehead viral diseases in Hawaii and will be available for future isolation and study of snakehead viruses.

  1. Snakehead-fish cell line, SSN-1 (Ophicephalus striatus) as a model for cadmium genotoxicity testing.

    Science.gov (United States)

    Aramphongphan, A; Laovitthayanggoon, S; Himakoun, L

    2009-08-01

    The purpose of this study is to evaluate the potential of snakehead-fish cell line (SSN-1 cells) derived from a striped snakehead (Ophicephalus striatus) as a model in the genotoxic assessment of cadmium (Cd). The first approach employed was to determine the contaminated Cd levels in commercial snakehead fish by the Graphite Atomic Absorption Spectrophotometer. In the second approach, the sensitivity of SSN-1 cells to cytotoxicity and genotoxicity of Cd was assessed by Trypan blue and micronucleus assays following 24, 48, and 72 h of incubation period. Exposure of SSN-1 cells to four increasing Cd concentrations ranging from 0.005 to 5 ppm for 72 h did not affect their survival as compared to the control cells. The Cd uptake by SSN-1 cells showed a concentration-dependent increase in intracellular Cd levels. Three non-cytotoxic Cd concentrations (0.05, 0.5, and 5 ppm) showed a concentration-dependent genotoxic effect, compared to relevant control cells. Both micronucleus frequencies and cadmium uptake levels by SSN-1 cells depended on exposure concentrations. These results showed that the SSN-1 cells are suitable for use as a model for in vitro Cd genotoxicity testing.

  2. Salutary value of haruan, the striped snakehead Channa striatus – a review

    Directory of Open Access Journals (Sweden)

    Mohammed Abdul Kader Haniffa

    2014-05-01

    Full Text Available Murrel namely Channa striatus or haruan contains all essential elements to maintain good health and to recover the lost energy after prolonged illness. The fatty acid composition (% of total fatty acid indicated the abundant presence of C16:0 fatty acid as 30% and the other major fatty acids were C22:6 (15%, C20:4 (19%, C18:1 (12% and C18:0 (15%. Haruan contains arachidonic acid (C20:4 as 19.0%, a precursor for prostaglandin and thromboxane biosyntheses. Both fatty and amino acids are important components for wound healing processes. Both the fillet and mucus extracts of haruan were found to exhibit a concentration dependent antinociceptive activity. In vitro antioxidant activity was higher in Channa roe protein hydrolysate than in Labeo roe protein hydrolysate in both DPPH radical scavenging and ferric reducing power. Protein content of roe concentrates (RPC was found to be 90.2% (Channa and 82.5% (Lates. Water absorption, oil absorption, foam capacity, stability and emulsifying capacity were found to be higher in Channa RPC than in Lates RPC. Characterization of protein hydrolysates from muscle and myofibrillar samples of haruan showed different kinetic and proteolytic activities. The skin extract of haruan influences the serotonergic receptor system thus they can function as an anti-depressant. Thus, haruan is the best example for food as medicine.

  3. Salutary value of haruan, the striped snakehead Channa striatus - a review

    Institute of Scientific and Technical Information of China (English)

    Mohammed Abdul Kader Haniffa; Paul Asir Jeya Sheela; Kumaresan Kavitha; Abdul Manan Mat Jais

    2014-01-01

    Murrel namely Channa striatus or haruan contains all essential elements to maintain good health and to recover the lost energy after prolonged illness. The fatty acid composition (% of total fatty acid) indicated the abundant presence of C16:0 fatty acid as 30% and the other major fatty acids were C22:6 (15%), C20:4 (19%), C18:1 (12%) and C18:0 (15%). Haruan contains arachidonic acid (C20:4) as 19.0%, a precursor for prostaglandin and thromboxane biosyntheses. Both fatty and amino acids are important components for wound healing processes. Both the fillet and mucus extracts of haruan were found to exhibit a concentration dependent antinociceptive activity. In vitro antioxidant activity was higher in Channa roe protein hydrolysate than in Labeo roe protein hydrolysate in both DPPH radical scavenging and ferric reducing power. Protein content of roe concentrates (RPC) was found to be 90.2% (Channa) and 82.5% (Lates). Water absorption, oil absorption, foam capacity, stability and emulsifying capacity were found to be higher in Channa RPC than in Lates RPC. Characterization of protein hydrolysates from muscle and myofibrillar samples of haruan showed different kinetic and proteolytic activities. The skin extract of haruan influences the serotonergic receptor system thus they can function as an anti-depressant. Thus, haruan is the best example for food as medicine.

  4. 成人线状苔藓1例%Lichen Striatus in an Adult

    Institute of Scientific and Technical Information of China (English)

    段茜; 程燕; 刘宏杰; 张敏

    2012-01-01

    患者女,44岁.左下肢及左侧腹股沟区丘疹伴轻微瘙痒3个月.皮肤科情况:左侧内踝、小腿内侧、大腿内侧以及腹股沟区大致沿Blaschko线纵形线状排列的红色丘疹.皮肤组织病理示表皮角化过度伴部分表皮角化不全,基底层液化变性,真皮全层小血管及附属器周围较多淋巴细胞浸润.诊断:成人线状苔藓.%A 44-year-old woman have presented with linear mildly itching red papules in left leg and inguen for 3 months. Skin examination revealed linear red papules following Blaschko' s lines, extending from the left inside ankle to inguen. Histological examination showed hyperkeratosis and focal parakeratosis in the epidermis, liquefaction degeneration of the basal cell layer, perivascular and periadnexal infiltration of lymphocytes in the dermis. A diagnosis of lichen striatus was established .

  5. Elastic fingering in rotating Hele-Shaw flows

    KAUST Repository

    Carvalho, Gabriel D.

    2014-05-21

    The centrifugally driven viscous fingering problem arises when two immiscible fluids of different densities flow in a rotating Hele-Shaw cell. In this conventional setting an interplay between capillary and centrifugal forces makes the fluid-fluid interface unstable, leading to the formation of fingered structures that compete dynamically and reach different lengths. In this context, it is known that finger competition is very sensitive to changes in the viscosity contrast between the fluids. We study a variant of such a rotating flow problem where the fluids react and produce a gellike phase at their separating boundary. This interface is assumed to be elastic, presenting a curvature-dependent bending rigidity. A perturbative weakly nonlinear approach is used to investigate how the elastic nature of the interface affects finger competition events. Our results unveil a very different dynamic scenario, in which finger length variability is not regulated by the viscosity contrast, but rather determined by two controlling quantities: a characteristic radius and a rigidity fraction parameter. By properly tuning these quantities one can describe a whole range of finger competition behaviors even if the viscosity contrast is kept unchanged. © 2014 American Physical Society.

  6. Lake Billy Shaw Operations and Maintenance, Final Annual Report 2000.

    Energy Technology Data Exchange (ETDEWEB)

    Dodson, Guy; Pero, Vincent (Shoshone-Paiute Tribes of the Duck Valley Reservation. Dept. of Habitat, Parks, Fish and Game.)

    2002-01-01

    Lake Billy Shaw is a newly constructed earthen dam reservoir with a surface area of 430 acres. Construction on the dam and structures was complete in November of 1998. The fish screen structures were complete in December of 1998, with initial filling in May 1999. Upon initial filling, dam structures, monitoring wells, fish screen structures, and lake level were monitored daily, with recordings being taken three times/week. During June 1999 the water to the lake was turned off in order to complete additional construction work on the lake. This work included installation of culverts around the perimeter road, installation of boat launches, finish work on the spillway structure, pumphouse and well protection and planting 4 trees along the entrance to the boat launch area. The water was turned on again in late September 1999 with all structures having been checked, fish screens greased and maintained and well levels being monitored. In 2000 the Operations and Maintenance portion of the project began with monitoring of piezometers, water levels, biological monitoring, riparian plantings, protection of shorelines, and maintenance of structures and appurtances.

  7. Patterns of color phase indicate spawn timing at a Nassau grouper Epinephelus striatus spawning aggregation

    Institute of Scientific and Technical Information of China (English)

    Stephanie K ARCHER; Scott A HEPPELL; Brice X SEMMENS; Christy V PATTENGILL-SEMMENS; Phillippe G BUSH; Croy M MCCOY; Bradley C JOHNSON

    2012-01-01

    Nassau grouper Epinephelus striatus are a large bodied,top level predator that is ecologically important throughout the Caribbean.Although typically solitary,Nassau grouper form large annual spawning aggregations at predictable times in specific locations.In 2003,The Cayman Islands Marine Conservation Board established protection for a newly rediscovered Nassau grouper spawning aggregation on Little Cayman,British West Indies.The large size of this aggregation provides a unique opportunity to study the behavior of Nassau grouper on a relatively intact spawning aggregation.During non-spawning periods Nassau grouper display a reddish-brown-and-white barred coloration.However,while aggregating they exhibit three additional color phases:“bicolor”,“dark”,and “white belly”.We video sampled the population on multiple days leading up to spawning across five spawning years.Divers focused a laser caliper equipped video camera on individual fish at the aggregation.We later analyzed the video to determine the length of the fish and record the color phase.Our observations show that the relative proportion of fish in the bicolor color phase increases significantly on the day leading up to the primary night of spawning.The increase in the proportion of the bicolor color phase from 0.05 early in the aggregation to 0.40 on the day of spawning suggests that this color phase conveys that a fish is behaviorally and physiologically prepared to spawn.Additionally,82.7% of fish exhibiting dark or white belly coloration early in the aggregation period suggests that these color phases are not only shown by female fish as was previously posited [Current Zoology 58 (1):73-83,2012].

  8. Randomized Controlled Trial on the Effect of Channa striatus Extract on Measurement of the Uterus, Pulsatility Index, Resistive Index of Uterine Artery and Superficial Skin Wound Artery in Post Lower Segment Caesarean Section Women

    Science.gov (United States)

    Abdul Karim, Ahmad Helmy; Nik Hussain, Nik Hazlina; Mohd Noor, Norhayati; Omar, Julia; Bin Bai @ Bae, Saringat; Wan Mahmood, Wan Haslindawani; Abdul Razak, Asrenee; Yunus, Rohaizan

    2015-01-01

    Aim To compare the mean of anteroposterior (AP) measurements of the uterus in longitudinal and oblique transverse planes, and the pulsatility index (PI) and resistive index (RI) of the uterine artery and superficial skin wound artery between patients taking Channa striatus and placebo. Background Channa striatus, also known as haruan, is a fresh water snakehead fish consumed in many parts of Southeast Asia. Channa striatus is also normally consumed by women postpartum to promote wound healing as well as to reduce post-operative pain. Methodology This study is a randomised, double blind, placebo-controlled study conducted in women after Lower Segment Caesarean Section (LSCS). Subjects were randomised to either a Channa striatus or a placebo group and were given a daily dosage of 500 mg of Channa striatus extract or 500 mg maltodextrin, respectively, for six weeks post LSCS. The anteroposterior measurements of the uterus in the longitudinal and oblique transverse planes, and the pulsatility index (PI) and resistive index (RI) of the uterine and superficial skin wound arteries were assessed using pelvic Gray-scale ultrasound and Doppler ultrasound at baseline (Day 3) and at two weeks, four weeks and six weeks post-operatively. Results Sixty-six subjects were randomised into the study with 33 in the Channa striatus group and 33 in the placebo group. No significant differences were detected in terms of the pulsatility index (PI) and the resistive index (RI) of the uterine and superficial skin wound arteries between the Channa striatus and placebo groups. However, in the Channa striatus group, the AP measurements of the uterus on the longitudinal and oblique transverse planes were significantly lower compared to the placebo group (p<0.05 and p<0.001, respectively). Conclusion Daily intake of Channa striatus extract results in marked differences compared to placebo in terms of uterine involution and recovery in women post LSCS. Trial Registration www.isrctn.com 11960786

  9. Randomized Controlled Trial on the Effect of Channa striatus Extract on Measurement of the Uterus, Pulsatility Index, Resistive Index of Uterine Artery and Superficial Skin Wound Artery in Post Lower Segment Caesarean Section Women.

    Directory of Open Access Journals (Sweden)

    Mohd Rizal Abu Bakar

    Full Text Available To compare the mean of anteroposterior (AP measurements of the uterus in longitudinal and oblique transverse planes, and the pulsatility index (PI and resistive index (RI of the uterine artery and superficial skin wound artery between patients taking Channa striatus and placebo.Channa striatus, also known as haruan, is a fresh water snakehead fish consumed in many parts of Southeast Asia. Channa striatus is also normally consumed by women postpartum to promote wound healing as well as to reduce post-operative pain.This study is a randomised, double blind, placebo-controlled study conducted in women after Lower Segment Caesarean Section (LSCS. Subjects were randomised to either a Channa striatus or a placebo group and were given a daily dosage of 500 mg of Channa striatus extract or 500 mg maltodextrin, respectively, for six weeks post LSCS. The anteroposterior measurements of the uterus in the longitudinal and oblique transverse planes, and the pulsatility index (PI and resistive index (RI of the uterine and superficial skin wound arteries were assessed using pelvic Gray-scale ultrasound and Doppler ultrasound at baseline (Day 3 and at two weeks, four weeks and six weeks post-operatively.Sixty-six subjects were randomised into the study with 33 in the Channa striatus group and 33 in the placebo group. No significant differences were detected in terms of the pulsatility index (PI and the resistive index (RI of the uterine and superficial skin wound arteries between the Channa striatus and placebo groups. However, in the Channa striatus group, the AP measurements of the uterus on the longitudinal and oblique transverse planes were significantly lower compared to the placebo group (p<0.05 and p<0.001, respectively.Daily intake of Channa striatus extract results in marked differences compared to placebo in terms of uterine involution and recovery in women post LSCS.www.isrctn.com 11960786.

  10. Could pseudogenes be widespread in ants? Evidence of numts in the leafcutter ant Acromyrmex striatus (Roger, 1863) (Formicidae: Attini).

    Science.gov (United States)

    Cristiano, Maykon Passos; Cardoso, Danon Clemes; Fernandes-Salomão, Tânia Maria

    2014-02-01

    The incorporation of fragments of mitochondrial DNA (mtDNA) in the nuclear genome, known as numts (nuclear mitochondrial pseudogenes), undermines general assumptions concerning the use of mtDNA in phylogenetic and phylogeographic studies. Accidental amplifications of these nuclear copies instead of the mitochondrial target can lead to crucial misinterpretations, thus the correct identification of numts and their differentiation from true mitochondrial sequences are important in preventing this kind of error. Our goal was to describe the existence of cytochrome b (cytb) numts in the leafcutter ant Acromyrmex striatus (Roger, 1863). PCR products were directly sequenced using a pair of universal primers designed to amplify the cytb gene of these insects. Other species of leafcutter ants were also sequenced. The sequences were analyzed and the numts were identified by the presence of double peaks, indels and premature stop codons. Only A. striatus clearly showed the presence of numts, while the other species displayed the expected amplification of the mtDNA cytb gene target using the same primer pair. We hope that our report will highlight the benefits and challenges of using mtDNA in the molecular phylogenetic reconstruction and phylogeographic studies of ants, while establishing the importance of numts reports for future studies.

  11. Inertia-induced dendriticlike patterns in lifting Hele-Shaw flows

    Science.gov (United States)

    Anjos, Pedro H. A.; Dias, Eduardo O.; Miranda, José A.

    2017-01-01

    The lifting Hele-Shaw cell problem is a variant of the classical constant-gap Hele-Shaw situation in which the cell gap width is time dependent. Experiments on Newtonian fluid flows in lifting Hele-Shaw cells with large lifting velocities reveal the development of dendriticlike fingered structures that compete among themselves. The usual Darcy law description of the problem, where inertial effects are neglected, has not been able to explain the origin of these competing sidebranched patterns. In this work we use a generalized Darcy law and a perturbative mode-coupling theory to investigate the impact of inertia on the pattern-forming dynamics of the system. Two main results are deduced: Inertia induces a mechanism for finger sidebranching formation and favors the intensification of finger competition events.

  12. 77 FR 5781 - Record of Decision for the Air Space Training Initiative Shaw Air Force Base, South Carolina...

    Science.gov (United States)

    2012-02-06

    ... Department of the Air Force Record of Decision for the Air Space Training Initiative Shaw Air Force Base... Decision (ROD). SUMMARY: On December 9, 2011, the United States Air Force signed the ROD for the Airspace Training Initiative Shaw Air Force Base, South Carolina Final Environmental Impact Statement (EIS). The...

  13. Long-time behavior of a Hele-Shaw type problem in random media

    CERN Document Server

    Pozar, Norbert

    2010-01-01

    We study the long-time behavior of an exterior Hele-Shaw problem in random media with a free boundary velocity that depends on position in dimensions $n \\geq 2$. A natural rescaling of solutions that is compatible with the evolution of the free boundary leads to homogenization of the free boundary velocity. By studying a limit obstacle problem for a Hele-Shaw system with a point source, we are able to show uniform convergence of the rescaled solution to a self-similar limit profile and we deduce that the rescaled free boundary uniformly approaches a sphere.

  14. Exact solutions for a periodic assembly of bubbles in a Hele-Shaw channel

    CERN Document Server

    Vasconcelos, Giovani L

    2014-01-01

    Exact solutions are reported for a periodic assembly of bubbles steadily co-travelling in a Hele-Shaw channel. The solutions are obtained as conformal mappings from a multiply connected circular domain in an auxiliary complex plane to the flow region in a period cell. The conformal mappings are constructed using the generalized Schwarz-Christoffel formula for multiply connected polygonal domains in terms of products of Schottky-Klein prime functions. It is shown that previous solutions for multiple steady bubbles in a Hele-Shaw cell are all particular cases of the solutions described herein. Examples of specific bubble configurations are discussed.

  15. Dietary supplementation of Zeolite on growth performance, immunological role, and disease resistance in Channa striatus against Aphanomyces invadans.

    Science.gov (United States)

    Jawahar, Suntharam; Nafar, Adil; Vasanth, Krishnan; Musthafa, Mohamed Saiyad; Arockiaraj, Jesu; Balasundaram, Chellam; Harikrishnan, Ramasamy

    2016-04-01

    Epizootic Ulcerative Syndrome (EUS) caused by Aphanomyces invadans which is a primary fungal parasitic pathogen, inflicts serious economic loss in tropical freshwater fish including snakehead murrel, Channa striatus. In the present study with an aim to circumvent the adverse effects of the traditional measures in graded levels (2%, 4%, and 6%) of Zeolite enriched diet on growth performance, hematology, immunological response, and disease resistance in C. striatus against A. invadans is reported. The final weight (FW), specific growth rate (SGR), feed conversion ratio (FCR), protein efficiency ratio (PER), and average daily gain (ADG) were significantly high in infected fish fed with 4% or 6% Zeolite incorporated diets on 4th week. The maximum survival rates (SR) of 96% and 98% were observed when fed with 2% or 4% diets on 4th week. Similarly, the white blood cell (WBC), red blood cell (RBC), hematocrit (Hct), mean corpuscular volume (MCV), and mean corpuscular haemoglobin concentration (MCHC) were significantly high when fed with any Zeolite enriched diet. However, the haemoglobin (Hb) and mean corpuscular haemoglobin (MCH) were significantly high with 4% and 6% Zeolite diets. The total protein and globulin were significantly high with 4% and 6% diets; the albumin, glucose, cholesterol, and triglyceride were significantly elevated with any enriched diet. The 4% and 6% Zeolite diets significantly enhanced the phagocytic activity on 2nd week but the 2% diet could increase it on 4th week. The respiratory burst (RB) activity, complement activity, and lymphocyte proliferation level were significantly enhanced with 4% and 6% Zeolite diets on weeks 1 and 2 while with 2% diet on 4th week. All enriched diets significantly increased the lysozyme activity during the experimental period. Superoxide anion (SOA) production significantly enhanced with 6% diet on weeks 1 and 2 whereas with 2% diet on week 4. Lower cumulative mortality of 10% and 15% was found with 4% and 6

  16. Two-Phase Flow in Rotating Hele-Shaw Cells with Coriolis Effects

    CERN Document Server

    Escher, Joachim; Walker, Christoph

    2011-01-01

    The free boundary problem of a two phase flow in a rotating Hele-Shaw cell with Coriolis effects is studied. Existence and uniqueness of solutions near spheres is established, and the asymptotic stability and instability of the trivial solution is characterized in dependence on the fluid densities.

  17. Capillary and geometrically driven fingering instability in nonflat Hele-Shaw cells

    Science.gov (United States)

    Brandão, Rodolfo; Miranda, José A.

    2017-03-01

    The usual viscous fingering instability arises when a fluid displaces another of higher viscosity in a flat Hele-Shaw cell, under sufficiently large capillary number conditions. In this traditional framing, the reverse flow case (more viscous fluid displacing a less viscous one) and the viscosity-matched situation (fluids of equal viscosities) are stable. We revisit this classical fluid dynamic problem, now considering flow in a nonflat Hele-Shaw cell. For a specific nonflat environment, we show that both the reverse and the viscosity-matched flows can become unstable, even at low capillary number. This peculiar fluid fingering instability is driven by the combined action of capillary effects and geometric properties of the nonflat Hele-Shaw cell. Our theoretical results indicate that the Hele-Shaw cell geometry significantly impacts the linear stability and nonlinear pattern-forming dynamics of the system. This suggests that the geometry of the medium plays an important role in favoring the occurrence of fingering patterns in nonflat, confined fluid flows.

  18. Antimony distribution and mobility in topsoils and plants (Cytisus striatus, Cistus ladanifer and Dittrichia viscosa) from polluted Sb-mining areas in Extremadura (Spain)

    Energy Technology Data Exchange (ETDEWEB)

    Murciego, A. Murciego [Area de Cristalografia y Mineralogia, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain); Sanchez, A. Garcia [IRNA-CSIC, Departamento de Geoquimica Ambiental, Aptdo. 257, Salamanca (Spain); Gonzalez, M.A. Rodriguez [Area de Cristalografia y Mineralogia, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain); Gil, E. Pinilla [Departamento de Quimica Analitica y Electroquimica, Facultad de Ciencias, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain)]. E-mail: epinilla@unex.es; Gordillo, C. Toro [Departamento de Quimica Analitica y Electroquimica, Facultad de Ciencias, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain); Fernandez, J. Cabezas [Area de Ecologia, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain); Triguero, T. Buyolo [Area de Ecologia, Universidad de Extremadura, Avda. Elvas, s/n, E-06071 Badajoz (Spain)

    2007-01-15

    A study about topsoil antimony distribution and mobility from the soils to the biomass has been afforded in three abandoned Sb mining areas located at Extremadura. Physico-chemical characteristics of the soils and total antimony levels were measured in soils and autochthonous plant species (Cytisus striatus, Cistus ladanifer and Dittrichia viscosa). Comparison with corresponding values in reference areas isolated from the mining activities is discussed. Antimony mobility in the soils was estimated by measuring the water extractable fraction; low results were obtained for the three soil areas, with no statistical differences. Plant ability to accumulate antimony was estimated by use of plant accumulation coefficients (PAC). Seasonal (spring vs. autumn) effects on the antimony content in the plant species. Cytisus striatus from Mari Rosa mine presented antimony excluder characteristics, whereas Dittrichia viscosa specimens growing in San Antonio mine showed a significant antimony bioaccumulation. - Bioaccumulation of antimony in vegetal species growing in mining areas.

  19. The mitochondrial genome of the red alga Kappaphycus striatus ("Green Sacol" variety): complete nucleotide sequence, genome structure and organization, and comparative analysis.

    Science.gov (United States)

    Tablizo, Francis A; Lluisma, Arturo O

    2014-12-01

    The complete mitochondrial (mt) DNA sequence of the rhodophyte Kappaphycus striatus ("Green Sacol" variety) was determined. The mtDNA is circular, 25,242 bases long (A+T content: 69.94%), and contains 50 densely packed genes comprising 93.22% of the mitochondrial genome, with genes encoded on both strands. Through comparative analysis, the overall sequence, genome structure, and organization of K. striatus mtDNA were seen to be highly similar with other fully sequenced mitochondrial genomes of the class Florideophyceae. On the other hand, certain degrees of genome rearrangements and greater sequence dissimilarities were observed for the mtDNAs of other evolutionarily distant red algae, such as those from the class Bangiophyceae and Cyanidiophyceae, compared to that of K. striatus. Furthermore, a trend was observed wherein the red algal mtDNAs tend to encode lesser number of protein-coding genes, albeit not necessarily shorter, as the organism becomes more morphologically complex. This trend is supported by the phylogenetic tree inferred from the concatenated amino acid sequences of the deduced protein products of cytochrome c oxidase subunit genes (cox1, 2, and 3).

  20. Prediction of Instability for Miscible Displacements in a Hele-Shaw Cell Prévision de l'instabilité pour des déplacements miscibles dans une cellule Hele-Shaw

    Directory of Open Access Journals (Sweden)

    Coskuner G.

    2006-11-01

    Full Text Available A universal dimensionless scaling group and its critical value at the onset of instability for a miscible displacement in a Hele-Shaw cell is derived. The derivation is based on a variational technique and it is capable of considering, for the first time, the effect of the length of a Hele-Shaw cell on the criterion for the onset of instability. The theory is verified by comparing it with forty-four Hele-Shaw cell experiments. On calcule un groupe universel sans dimension de mise à l'échelle et sa valeur critique au départ de l'instabilité dans un déplacement miscible dans une cellule Hele-Shaw. Ce calcul est basé sur une technique variationnelle et permet, pour la première fois, de prendre en compte l'effet de la longueur d'une cellule Hele-Shaw sur le critère d'apparition d'instabilité. La théorie est vérifiée en la comparant avec des expériences réalisées avec quarante-quatre cellules Hele-Shaw.

  1. Determining the number of fingers in the lifting Hele-Shaw problem

    Science.gov (United States)

    Miranda, Jose; Dias, Eduardo

    2013-11-01

    The lifting Hele-Shaw cell flow is a variation of the celebrated radial viscous fingering problem for which the upper cell plate is lifted uniformly at a specified rate. This procedure causes the formation of intricate interfacial patterns. Most theoretical studies determine the total number of emerging fingers by maximizing the linear growth rate, but this generates discrepancies between theory and experiments. In this work, we tackle the number of fingers selection problem in the lifting Hele-Shaw cell by employing the recently proposed maximum-amplitude criterion. Our linear stability analysis accounts for the action of capillary, viscous normal stresses, and wetting effects, as well as the cell confinement. The comparison of our results with very precise laboratory measurements for the total number of fingers shows a significantly improved agreement between theoretical predictions and experimental data. We thank CNPq (Brazilian Sponsor) for financial support.

  2. Genealogy of John and Charles Bell: their relationship with the children of Charles Shaw of Ayr.

    Science.gov (United States)

    Kaufman, M

    2005-11-01

    The Reverend William Bell had six children who survived infancy. Two of his sons entered the legal profession and two other sons became distinguished anatomists and surgeons--John Bell, said for 20 years to have been the leading operating surgeon in Britain and throughout the world--and Sir Charles Bell, possibly the most distinguished anatomist and physiologist of his day. Information is not known about the fifth son or their sister. Charles Shaw, a lawyer of Ayr, had four sons and two daughters who survived infancy. Two of his sons, John and Alexander, became anatomists and later surgeons at the Middlesex Hospital, and both worked closely with Charles Bell at the Great Windmill Street School of Anatomy. His third son entered the law and his fourth son became a distinguished soldier. The two daughters of Charles Shaw married into the Bell family: Barbara married George Joseph Bell and Marion married Mr (later Sir) Charles Bell.

  3. The Two-Phase Hell-Shaw Flow: Construction of an Exact Solution

    Science.gov (United States)

    Malaikah, K. R.

    2013-03-01

    We consider a two-phase Hele-Shaw cell whether or not the gap thickness is time-dependent. We construct an exact solution in terms of the Schwarz function of the interface for the two-phase Hele-Shaw flow. The derivation is based upon the single-valued complex velocity potential instead of the multiple-valued complex potential. As a result, the construction is applicable to the case of the time-dependent gap. In addition, there is no need to introduce branch cuts in the computational domain. Furthermore, the interface evolution in a two-phase problem is closely linked to its counterpart in a one-phase problem

  4. Bubbles and fingers in a Hele-Shaw cell: steady solutions

    CERN Document Server

    Vasconcelos, Giovani L

    2015-01-01

    Analytical solutions for both a finite assembly and a periodic array of bubbles steadily moving in a Hele-Shaw channel are presented. The particular case of multiple fingers penetrating into the channel and moving jointly with an assembly of bubbles is also analysed. The solutions are given by a conformal mapping from a multiply connected circular domain in an auxiliary complex plane to the fluid region exterior to the bubbles. In all cases the desired mapping is written explicitly in terms of certain special transcendental functions, known as the secondary Schottky-Klein prime functions. Taken together, the solutions reported here represent the complete set of solutions for steady bubbles (and fingers) in a horizontal Hele-Shaw channel when surface tension is neglected. All previous solutions under these assumptions are particular cases of the general solutions reported here. Other possible applications of the formalism described here are also discussed.

  5. Computer simulation of viscous fingering in a lifting Hele-Shaw cell with grooved plates

    Indian Academy of Sciences (India)

    Sujata Tarafdar; Soma Nag; Tapati Dutta; Suparna Sinha

    2009-10-01

    We simulate viscous fingering generated by separating two plates with a constant force, in a lifting Hele-Shaw cell. Variation in the patterns for different fluid viscosity and lifting force is studied. Viscous fingering is strongly affected by anisotropy. We report a computer simulation study of fingering patterns, where circular or square grooves are etched on to the lower plate. Results are compared with experiments.

  6. Interfacial instability in a time-periodic rotating Hele-Shaw Cell

    Directory of Open Access Journals (Sweden)

    Bouchgl J.

    2014-01-01

    Full Text Available The effect of time-periodic angular velocity on the interfacial instability of two immiscible, viscous fluids of different densities and confined in an annular Hele-Shaw cell is investigated. An inviscid linear stability analysis of the viscous and time dependent basic flow leads to a periodic Mathieu oscillator describing the evolution of the interfacial amplitude. We show that the relevant parameters that control the interface are the Bond number, viscosity ratio, Atwood number and the frequency number.

  7. A Special Class of Univalent Functions in Hele-Shaw Flow Problems

    Directory of Open Access Journals (Sweden)

    Paula Curt

    2011-01-01

    Full Text Available We study the time evolution of the free boundary of a viscous fluid for planar flows in Hele-Shaw cells under injection. Applying methods from the theory of univalent functions, we prove the invariance in time of Φ-likeness property (a geometric property which includes starlikeness and spiral-likeness for two basic cases: the inner problem and the outer problem. We study both zero and nonzero surface tension models. Certain particular cases are also presented.

  8. The Influence of Nietzsche’s Anthropology on the Works of George Bernard Shaw

    Directory of Open Access Journals (Sweden)

    Biljana Vlašković

    2016-03-01

    Full Text Available This paper identifies the traces of Friedrich Nietzsche’s anthropological philosophy in the dramatic, sociological, anthropological, and philosophical writings of George Bernard Shaw. Apart from the obvious use of Nietzsche’s term “the Superman” (Übermensch to serve the purposes of his own philosophy, the analysis shows further similarities between the two writers, namely that Shaw modified Nietzsche’s expression “the will to power”, as well as Schopenhauer’s concept of will as the world’s essence, and termed it the “Life Force”, which will enable a “creative evolution” of humans into a higher being, an Overman, or a Superman. Also concerning this is the role that Shaw gives to women in this process of creative evolution, by making the female the dominant gender, and in so doing radically deconstructing the deeply rooted 19th century view of woman as a being whose natural habitat is the family home, and whose role in wooing is exclusively passive. Such an attitude led many critics to believe that Shaw was a misogynist of the same kind as Schopenhauer and Nietzsche. However, Shawian discourse as a whole exhibits а vehement support of the feminist struggles for the gender equality, which made the author a favorite in feminist circles. Different perspectives in Shaw’s anthropology mirror Nietzsche’s demand for the “transvaluation of all values”, and this alone is necessary to provide a constant change, which, according to both authors, is the only thing that is certain and constant in this world.

  9. Phytoremediation of hexachlorocyclohexane (HCH)-contaminated soils using Cytisus striatus and bacterial inoculants in soils with distinct organic matter content.

    Science.gov (United States)

    Becerra-Castro, Cristina; Kidd, Petra S; Rodríguez-Garrido, Beatriz; Monterroso, Carmela; Santos-Ucha, Paula; Prieto-Fernández, Angeles

    2013-07-01

    The performance of Cytisus striatus in association with different microbial inoculant treatments on the dissipation of the insecticide hexachlorocyclohexane (HCH) was studied. Two soils with different organic matter (A and B soil) content were spiked with 0 or 65 mg HCH kg(-1). Plants were either not inoculated (NI), or inoculated with the endophyte Rhodococcus erythropolis ET54b and the HCH-degrader Sphingomonas sp. D4 separately or in combination (ET, D4 and ETD4). Unplanted pots were also established. HCH phytotoxicity was more pronounced in the B soil. Soil HCH concentrations in unplanted pots were similar to initial concentrations, whereas concentrations were reduced after plant growth: by 20% and 8% in A and B soil, respectively. Microbial inoculants also modified HCH dissipation, although effects were soil-dependent. Inoculation with the combination of strains (ETD4) led to a significant enhancement in HCH dissipation: up to 53% in the A soil and 43% in the B soil.

  10. An upstream initiator caspase 10 of snakehead murrel Channa striatus, containing DED, p20 and p10 subunits: molecular cloning, gene expression and proteolytic activity.

    Science.gov (United States)

    Arockiaraj, Jesu; Gnanam, Annie J; Muthukrishnan, Dhanaraj; Pasupuleti, Mukesh; Milton, James; Singh, Arun

    2013-02-01

    Caspase 10 (CsCasp10) was identified from a constructed cDNA library of freshwater murrel (otherwise called snakehead) Channa striatus. The CsCasp10 is 1838 base pairs (bp) in length and it is encoding 549 amino acid (aa) residues. CsCasp10 amino acid contains two death effector domains (DED) in the N-terminal at 2-77 and 87-154 and it contains caspase family p20 domain (large subunit) and caspase family p10 domain (small subunit) in the C-terminal at 299-425 and 449-536 respectively. Pairwise analysis of CsCasp10 showed the highest sequence similarity (79%) with caspase 10 of Paralichthys olivaceus. Moreover, the phylogenetic analysis showed that CsCasp10 is clustered together with other fish caspase 10, formed a sister group with caspase 10 from other lower vertebrates including amphibian, reptile and birds and finally clustered together with higher vertebrates such as mammals. Significantly (P < 0.05) highest CsCasp10 gene expression was noticed in gills and lowest in intestine. Furthermore, the CsCasp10 gene expression in C. striatus was up-regulated in gills by fungus Aphanomyces invadans and bacteria Aeromonas hydrophila induction. The proteolytic activity was analyzed using the purified recombinant CsCasp10 protein. The results showed the proteolytic activity of CsCasp10 for caspase 10 substrate was 2.5 units per μg protein. Moreover, the proteolytic activities of CsCasp10 in kidney and spleen induced by A. invadans and A. hydrophila stimulation were analyzed by caspase 10 activity assay kit. All these results showed that CsCasp10 are participated in immunity of C. striatus against A. invadans and A. hydrophila infection.

  11. Analysis of expressed sequence tags from the venom ducts of Conus striatus: focusing on the expression profile of conotoxins.

    Science.gov (United States)

    Pi, Canhui; Liu, Yun; Peng, Can; Jiang, Xiuhua; Liu, Junliang; Xu, Bin; Yu, Xuesong; Yu, Yanghong; Jiang, Xiaoyu; Wang, Lei; Dong, Meiling; Chen, Shangwu; Xu, An-Long

    2006-02-01

    Cone snails (genus Conus) are predatory marine gastropods that use venom peptides for interacting with prey, predators and competitors. A majority of these peptides, generally known as conotoxins demonstrate striking selectivity in targeting specific subtypes of ion channels and neurotransmitter receptors. So they are not only useful tools in neuroscience to characterize receptors and receptor subtypes, but offer great potential in new drug research and development as well. Here, a cDNA library from the venom ducts of a fish-hunting cone snail species, Conus striatus is described for the generation of expressed sequence tags (ESTs). A total of 429 ESTs were grouped into 137 clusters or singletons. Among these sequences, 221 were toxin sequences, accounting for 52.1% (corresponding to 19 clusters) of all transcripts. A-superfamily (132 ESTs) and O-superfamily conotoxins (80 ESTs) constitute the predominant toxin components. Some non-disulfide-rich Conus peptides were also found. The expression profile of conotoxins also explained to some extent the pharmacological and physiological reactions elicited by this typical piscivorous species. For the first time, a nonstop transcript of conotoxin was identified, which is suggestive that alternative polyadenylation may be a means of post-transcriptional regulation of conotoxin production. A comparison analysis of these conotoxins reveals the different variation and divergence patterns in these two superfamilies. Our investigations indicate that focal hyper-mutation, block substitution and exon shuffling are three main mechanisms leading to the conotoxin diversity in a species. The comprehensive set of Conus gene sequences allowed the identification of the representative classes of conotoxins and related components, which may lay the foundation for further research and development of conotoxins.

  12. The embryonic life history of the tropical sea hare Stylocheilus striatus (Gastropoda: Opisthobranchia) under ambient and elevated ocean temperatures.

    Science.gov (United States)

    Horwitz, Rael; Jackson, Matthew D; Mills, Suzanne C

    2017-01-01

    Ocean warming represents a major threat to marine biota worldwide, and forecasting ecological ramifications is a high priority as atmospheric carbon dioxide (CO2) emissions continue to rise. Fitness of marine species relies critically on early developmental and reproductive stages, but their sensitivity to environmental stressors may be a bottleneck in future warming oceans. The present study focuses on the tropical sea hare, Stylocheilus striatus (Gastropoda: Opisthobranchia), a common species found throughout the Indo-West Pacific and Atlantic Oceans. Its ecological importance is well-established, particularly as a specialist grazer of the toxic cyanobacterium, Lyngbya majuscula. Although many aspects of its biology and ecology are well-known, description of its early developmental stages is lacking. First, a detailed account of this species' life history is described, including reproductive behavior, egg mass characteristics and embryonic development phases. Key developmental features are then compared between embryos developed in present-day (ambient) and predicted end-of-century elevated ocean temperatures (+3 °C). Results showed developmental stages of embryos reared at ambient temperature were typical of other opisthobranch species, with hatching of planktotrophic veligers occurring 4.5 days post-oviposition. However, development times significantly decreased under elevated temperature, with key embryonic features such as the velum, statocysts, operculum, eyespots and protoconch developing approximately 24 h earlier when compared to ambient temperature. Although veligers hatched one day earlier under elevated temperature, their shell size decreased by approximately 20%. Our findings highlight how an elevated thermal environment accelerates planktotrophic development of this important benthic invertebrate, possibly at the cost of reducing fitness and increasing mortality.

  13. A novel murrel Channa striatus mitochondrial manganese superoxide dismutase: gene silencing, SOD activity, superoxide anion production and expression.

    Science.gov (United States)

    Arockiaraj, Jesu; Palanisamy, Rajesh; Bhatt, Prasanth; Kumaresan, Venkatesh; Gnanam, Annie J; Pasupuleti, Mukesh; Kasi, Marimuthu

    2014-12-01

    We have reported the molecular characterization including gene silencing, superoxide activity, superoxide anion production, gene expression and molecular characterization of a mitochondrial manganese superoxide dismutase (mMnSOD) from striped murrel Channa striatus (named as CsmMnSOD). The CsmMnSOD polypeptide contains 225 amino acids with a molecular weight of 25 kDa and a theoretical isoelectric point of 8.3. In the N-terminal region, CsmMnSOD carries a mitochondrial targeting sequence and a superoxide dismutases (SOD) Fe domain (28-109), and in C-terminal region, it carries another SOD Fe domain (114-220). The CsmMnSOD protein sequence shared significant similarity with its homolog of MnSOD from rock bream Oplegnathus fasciatus (96%). The phylogenetic analysis showed that the CsmMnSOD fell in the clade of fish mMnSOD group. The monomeric structure of CsmMnSOD possesses 9 α-helices (52.4%), 3 β-sheets (8.8%) and 38.8% random coils. The highest gene expression was noticed in liver, and its expression was inducted with fungal (Aphanomyces invadans) and bacterial (Aeromonas hydrophila) infections. The gene silencing results show that the fish that received dsRNA exhibited significant (P superoxide anion production was determined by calculating the granular blood cell count during infection in murrel. It shows that the infection influenced the superoxide radical production which plays a major role in killing the pathogens. Overall, this study indicated the defense potentiality of CsmMnSOD; however, further research is necessary to explore its capability at protein level.

  14. The embryonic life history of the tropical sea hare Stylocheilus striatus (Gastropoda: Opisthobranchia) under ambient and elevated ocean temperatures

    Science.gov (United States)

    Jackson, Matthew D.; Mills, Suzanne C.

    2017-01-01

    Ocean warming represents a major threat to marine biota worldwide, and forecasting ecological ramifications is a high priority as atmospheric carbon dioxide (CO2) emissions continue to rise. Fitness of marine species relies critically on early developmental and reproductive stages, but their sensitivity to environmental stressors may be a bottleneck in future warming oceans. The present study focuses on the tropical sea hare, Stylocheilus striatus (Gastropoda: Opisthobranchia), a common species found throughout the Indo-West Pacific and Atlantic Oceans. Its ecological importance is well-established, particularly as a specialist grazer of the toxic cyanobacterium, Lyngbya majuscula. Although many aspects of its biology and ecology are well-known, description of its early developmental stages is lacking. First, a detailed account of this species’ life history is described, including reproductive behavior, egg mass characteristics and embryonic development phases. Key developmental features are then compared between embryos developed in present-day (ambient) and predicted end-of-century elevated ocean temperatures (+3 °C). Results showed developmental stages of embryos reared at ambient temperature were typical of other opisthobranch species, with hatching of planktotrophic veligers occurring 4.5 days post-oviposition. However, development times significantly decreased under elevated temperature, with key embryonic features such as the velum, statocysts, operculum, eyespots and protoconch developing approximately 24 h earlier when compared to ambient temperature. Although veligers hatched one day earlier under elevated temperature, their shell size decreased by approximately 20%. Our findings highlight how an elevated thermal environment accelerates planktotrophic development of this important benthic invertebrate, possibly at the cost of reducing fitness and increasing mortality. PMID:28168118

  15. The embryonic life history of the tropical sea hare Stylocheilus striatus (Gastropoda: Opisthobranchia under ambient and elevated ocean temperatures

    Directory of Open Access Journals (Sweden)

    Rael Horwitz

    2017-02-01

    Full Text Available Ocean warming represents a major threat to marine biota worldwide, and forecasting ecological ramifications is a high priority as atmospheric carbon dioxide (CO2 emissions continue to rise. Fitness of marine species relies critically on early developmental and reproductive stages, but their sensitivity to environmental stressors may be a bottleneck in future warming oceans. The present study focuses on the tropical sea hare, Stylocheilus striatus (Gastropoda: Opisthobranchia, a common species found throughout the Indo-West Pacific and Atlantic Oceans. Its ecological importance is well-established, particularly as a specialist grazer of the toxic cyanobacterium, Lyngbya majuscula. Although many aspects of its biology and ecology are well-known, description of its early developmental stages is lacking. First, a detailed account of this species’ life history is described, including reproductive behavior, egg mass characteristics and embryonic development phases. Key developmental features are then compared between embryos developed in present-day (ambient and predicted end-of-century elevated ocean temperatures (+3 °C. Results showed developmental stages of embryos reared at ambient temperature were typical of other opisthobranch species, with hatching of planktotrophic veligers occurring 4.5 days post-oviposition. However, development times significantly decreased under elevated temperature, with key embryonic features such as the velum, statocysts, operculum, eyespots and protoconch developing approximately 24 h earlier when compared to ambient temperature. Although veligers hatched one day earlier under elevated temperature, their shell size decreased by approximately 20%. Our findings highlight how an elevated thermal environment accelerates planktotrophic development of this important benthic invertebrate, possibly at the cost of reducing fitness and increasing mortality.

  16. The Mozart effect: questions about the seminal findings of Rauscher, Shaw, and colleagues.

    Science.gov (United States)

    Fudin, Robert; Lembessis, Elizabeth

    2004-04-01

    Seminal evidence for the Mozart effect was presented by Rauscher, Shaw, and colleagues in 1993 and 1994. A critical evaluation of their methodologies and interpretation of findings raises questions that must be answered before this evidence can be regarded as valid. We discuss issues such as their scoring of the Stanford-Binet Intelligence Scale, the experimental design used in their 1993 study, the validity of their 1993 IQ measure, the duration of the Mozart effect, their choice of experimental tasks in relation to predictions of the trion model of neural functioning, and the statistical analyses and interpretation of results in the 1993 and 1994 studies.

  17. Free surface Hele-Shaw flows around an obstacle: A random walk simulation.

    Science.gov (United States)

    Bogoyavlenskiy, Vladislav A; Cotts, Eric J

    2004-01-01

    This paper presents computer simulations of pressure driven viscous flows that creep in two dimensions (Hele-Shaw cells). We model the time and spatial evolution of free liquid-gas interfaces perturbed by solid obstacles of various configurations such as wedges, steps, and ellipses. Our goal is to study short- and long-scale obstacle effects on the interface shape and velocity. Specific focus is given to the dynamics of a triple (gas-liquid-solid) contact line, which determines local wetting of obstacles. As a principal contribution, we derive a functional relationship between the contact line velocity and the obstacle geometry.

  18. Magnetic field effects on viscous fingering of a ferrofluid in a radial Hele-Shaw cell

    Energy Technology Data Exchange (ETDEWEB)

    Herreman, Wietze [Laboratoire Louis Neel, CNRS, BP 166, 38042 Grenoble Cedex 9 (France); Molho, Pierre [Laboratoire Louis Neel, CNRS, BP 166, 38042 Grenoble Cedex 9 (France)]. E-mail: molho@grenoble.cnrs.fr; Neveu, Sophie [LI2C, Universite Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05 (France)

    2005-03-15

    We have studied the effects of a magnetic field on viscous fingering when a ferrofluid is pushed in a more viscous liquid in a circular Hele-Shaw cell. The main effect of the magnetic field, as already known, is to stabilize interfaces parallel to the field and to destabilize interfaces normal to the field. Depending on the growth regime (quasi static, fingering, dendritic growth), which depends on parameters like the cell thickness and oil viscosity, the combination of field effect and anisotropy is analyzed through the various observed patterns.

  19. Effect of Horizontal Vibration on the Interfacial Instability in a Horizontal Hele-Shaw Cell

    Directory of Open Access Journals (Sweden)

    Souhar M.

    2012-07-01

    Full Text Available The effect of periodic oscillations on the interfacial instability of two immiscible fluids, confined in a horizontal Hele-Shaw cell, is investigated. A linear stability analysis of the basic state leads to a periodic Mathieu oscillator corresponding to the amplitude of the interface. Then, the threshold of parametric instability of the interface is characterized by harmonic or subharmonic periodic solutions. We show that the relevant parameters that control the interface are the Bond number, density ratio, Weber number and amplitude and frequency of oscillations.

  20. Premixed combustion of coconut oil in a hele-shaw cell

    Directory of Open Access Journals (Sweden)

    Hadi Saroso

    2014-12-01

    Full Text Available Coconut oil combustion characteristic is observed experimentally by evaporating oil in the boiler then mix it with air before being burned at various equivalence ratios in the Hele-shaw cell. The result shows that, coconut oil tends to break into glycerol and fatty acid due to hydrolysis reaction producing the flame propagation, where the fatty acid flame propagates first then glycerol flame. Micro-explosion occurs when moisture from fatty acid combustion is absorbed by glycerol and higher heating due to higher flame speed produces more micro-explosion.

  1. Buoyancy-driven instability of a miscible horizontal displacement in a Hele-Shaw cell

    Science.gov (United States)

    Haudin, F.; Riolfo, L. A.; Knaepen, B.; de Wit, A.

    2012-11-01

    In Hele-Shaw cells, viscous fingers are forming when a fluid is injected into a more viscous one. If the two fluids are reversed, with the less mobile fluid injected into the low viscosity one, the situation is expected to be stable from a viscous point of view. Nevertheless, a destabilization of the interface can be observed due to a buoyancy-driven effect if a density difference exists between the two miscible fluids. As a result, the Poiseuille profile established in the gap of the cell locally destabilizes and convection rolls are forming. In a view from above, a striped pattern is observed at the miscible interface between the two fluids. To characterize the development of this instability, we have performed an experimental study of viscously stable miscible displacements in a Hele-Shaw cell with radial injection. The displacing fluids are aqueous solutions of glycerol and the displaced ones are either dyed water or dyed glycerol solutions. The way the relative properties of the two fluids is influencing the onset time of the instability and the characteristic size of the pattern is studied. The influence of the gap width and of the flow rate on the buoyantly unstable dynamics is also characterized.

  2. Coriolis effects on rotating Hele-Shaw flows: a conformal-mapping approach.

    Science.gov (United States)

    Miranda, José A; Gadêlha, Hermes; Dorsey, Alan T

    2010-12-01

    The zero surface tension fluid-fluid interface dynamics in a radial Hele-Shaw cell driven by both injection and rotation is studied by a conformal-mapping approach. The situation in which one of the fluids is inviscid and has negligible density is analyzed. When Coriolis force effects are ignored, exact solutions of the zero surface tension rotating Hele-Shaw problem with injection reveal suppression of cusp singularities for sufficiently high rotation rates. We study how the Coriolis force affects the time-dependent solutions of the problem, and the development of finite time singularities. By employing Richardson's harmonic moments approach we obtain conformal maps which describe the time evolution of the fluid boundary. Our results demonstrate that the inertial Coriolis contribution plays an important role in determining the time for cusp formation. Moreover, it introduces a phase drift that makes the evolving patterns rotate. The Coriolis force acts against centrifugal effects, promoting (inhibiting) cusp breakdown if the more viscous and dense fluid lies outside (inside) the interface. Despite the presence of Coriolis effects, the occurrence of finger bending events has not been detected in the exact solutions.

  3. Failure to confirm the Rauscher and Shaw description of recovery of the Mozart effect.

    Science.gov (United States)

    Steele, K M; Brown, J D; Stoecker, J A

    1999-06-01

    The Mozart effect is an increase in spatial reasoning scores detected immediately after listening to the first movement of a Mozart piano sonata. Rauscher and Shaw (1998) suggested that failure to produce a Mozart effect could arise from carryover effects of a spatial reasoning pretest which may interfere with the effect of listening to Mozart. They cited an unpublished study in which a verbal distractor was inserted between the pretest and listening condition, and the manipulation produced the recovery of a Mozart effect. This experiment attempted to confirm the unpublished study. 206 college students were exposed to one of three sequences, pretest-Verbal distractor material-Mozart, pretest-Mozart-Verbal distractor material, and pretest-Verbal distractor material. An immediate posttest indicated no significant difference on solution of paper folding and cutting items among the three groups. The results do not support Rauscher and Shaw (1998). Our negative results are consistent with prior failures in other laboratories to produce a Mozart effect.

  4. COMPARATIVE STUDY OF WLR OF Channa striatus OF FRY- FINGERLING, GROW-OUTS AND ADULTS OF GANGETIC PLAINS

    Directory of Open Access Journals (Sweden)

    R.DAYAL

    2012-03-01

    Full Text Available In the present study the Weight – Length relationships (WLR are described for the three stages of life of the Snakehead, Saul, Channa striatus, collected from the districts of Barabanki, Lucknow and Unnao in Uttar Pradesh in 2008-09. Method used for analysis of fisheries data on the WLR is (W=aLb and this study reports the parameters ‘a’ and ‘b’ of the length–weight relationships for one hundred numbers of fry/ fingerlings, thirty-seven grow-out fishes and eighty-nine number of adult fishes collected from the same geographical area. The weight and total length of fry/ fingerlings ranged from 340 to 650 mg and 35 to 45 mm respectively (a=W/L3, 0.0060 to 0.0088; log W=log a + b*(log L, 3.92821 to 4.72919; b=(log W-log a/log L, 3.89643 to 4.11143. The recorded weight and total length of the grow-outs ranged between 9 to 93g and 10.9 to 25.4 cm respectively (a=W/L3, 0.0082 to 0.0146; log W=log a + b*(log L, 0.95424 to 1.96848; b= (log W-log a/log L, 3.0. In case of adults the weight and total length recorded ranged between 74 to 476g and 22.9 to 42.4 cm respectively (a=W/L3, 0.0054 to 0.0121; log W=log a + b*(log L, 2.39029 to 4.17039; b=(log W-log a/log L, 3.40747 to 3.95845. Since fishes were collected during the months of April - May, 2008 and November, 2009, the parameters estimated in this study are considered only for these seasons, because WLR are not constant over the entire year and vary according to factors such as temperature, food availability, feeding rate, gonadal development and spawning period. The result suggests that these fishes grow in a pattern from early life stage to adult if grown in the same environmental conditions.

  5. Highly divergent 18S rRNA gene paralogs in a Cryptosporidium genotype from eastern chipmunks (Tamias striatus).

    Science.gov (United States)

    Stenger, Brianna L S; Clark, Mark E; Kváč, Martin; Khan, Eakalak; Giddings, Catherine W; Dyer, Neil W; Schultz, Jessie L; McEvoy, John M

    2015-06-01

    Cryptosporidium is an apicomplexan parasite that causes the disease cryptosporidiosis in humans, livestock, and other vertebrates. Much of the knowledge on Cryptosporidium diversity is derived from 18S rRNA gene (18S rDNA) phylogenies. Eukaryote genomes generally have multiple 18S rDNA copies that evolve in concert, which is necessary for the accurate inference of phylogenetic relationships. However, 18S rDNA copies in some genomes evolve by a birth-and-death process that can result in sequence divergence among copies. Most notably, divergent 18S rDNA paralogs in the apicomplexan Plasmodium share only 89-95% sequence similarity, encode structurally distinct rRNA molecules, and are expressed at different life cycle stages. In the present study, Cryptosporidium 18S rDNA was amplified from 28/72 (38.9%) eastern chipmunks (Tamias striatus). Phylogenetic analyses showed the co-occurrence of two 18S rDNA types, Type A and Type B, in 26 chipmunks, and Type B clustered with a sequence previously identified as Cryptosporidium chipmunk genotype II. Types A and B had a sister group relationship but shared less than 93% sequence similarity. In contrast, actin and heat shock protein 70 gene sequences were homogeneous in samples with both Types A and B present. It was therefore concluded that Types A and B are divergent 18S rDNA paralogs in Cryptosporidium chipmunk genotype II. Substitution patterns in Types A and B were consistent with functionally constrained evolution; however, Type B evolved more rapidly than Type A and had a higher G+C content (46.3% versus 41.0%). Oocysts of Cryptosporidium chipmunk genotype II measured 4.17 μm (3.73-5.04 μm) × 3.94 μm (3.50-4.98 μm) with a length-to-width ratio of 1.06 ± 0.06 μm, and infection occurred naturally in the jejunum, cecum, and colon of eastern chipmunks. The findings of this study have implications for the use of 18S rDNA sequences to infer phylogenetic relationships.

  6. Analytic theory for the determination of velocity and stability of bubbles in a Hele-Shaw cell. Part 2: Stability

    Science.gov (United States)

    Tanveer, Saleh

    1989-01-01

    The analysis is extended to determine the linear stability of a bubble in a Hele-Shaw cell analytically. Only the solution branch corresponding to largest possible bubble velocity U for given surface tension is found to be stable, while all the others are unstable, in accordance with earlier numerical results.

  7. 77 FR 70193 - Shaw Areva MOX Services (Mixed Oxide Fuel Fabrication Facility); Notice of Atomic Safety and...

    Science.gov (United States)

    2012-11-23

    ... From the Federal Register Online via the Government Publishing Office NUCLEAR REGULATORY COMMISSION Shaw Areva MOX Services (Mixed Oxide Fuel Fabrication Facility); Notice of Atomic Safety and Licensing Board Reconstitution Pursuant to 10 CFR 2.313(c) and 2.321(b), the Atomic Safety and...

  8. Ocorrência do parasitóide Labena fiorii sp.n. (Hymenoptera, Ichneumonidae em larvas de Hedypathes betulinus (Klug, broca da erva-mate e em Chydarteres striatus (Fabricius, broca da aroeira, (Coleoptera, Cerambycidae Labena fiorii sp.n. (Hymenoptera, Ichneumonidae, parasitoid of Hedypathes betulinus (Klug and Chydarteres striatus (Fabricius (Coleoptera, Cerambycidae

    Directory of Open Access Journals (Sweden)

    Vinalto Graf

    1999-03-01

    Full Text Available The borer beetle Hedypathes betulinus, plague of "erva-mate" (Ilex paraguariensis St. Hil., 1822, has been subject of study aiming its biological control. Larvae of this insect digs galleries in the stem and branches of this tree, difficulting its control. Labena fiorii sp.n. was found in branches of this tree, parasitizing larvae of Hedypathes betulinus in Teixeira Soares and in "aroeira" (Schinus sp. in larvae of Chydarteres striatus (Fabricius, 1787 in Curitiba, Paraná, Brazil. Labena fiorii sp.n., from Paraná (Curitiba; Teixeira Soares and Santa Catarina (Seara, Nova Teutônia Brazil, is described.

  9. Wavelength selection in injection-driven Hele-Shaw flows: A maximum amplitude criterion

    Science.gov (United States)

    Dias, Eduardo; Miranda, Jose

    2013-11-01

    As in most interfacial flow problems, the standard theoretical procedure to establish wavelength selection in the viscous fingering instability is to maximize the linear growth rate. However, there are important discrepancies between previous theoretical predictions and existing experimental data. In this work we perform a linear stability analysis of the radial Hele-Shaw flow system that takes into account the combined action of viscous normal stresses and wetting effects. Most importantly, we introduce an alternative selection criterion for which the selected wavelength is determined by the maximum of the interfacial perturbation amplitude. The effectiveness of such a criterion is substantiated by the significantly improved agreement between theory and experiments. We thank CNPq (Brazilian Sponsor) for financial support.

  10. Ferrofluid patterns in Hele-Shaw cells: Exact, stable, stationary shape solutions

    Science.gov (United States)

    Lira, Sergio; Miranda, Jose

    2016-11-01

    We investigate a quasi-two-dimensional system composed by an initially circular ferrofluid droplet surrounded by a nonmagnetic fluid of higher density. These immiscible fluids flow in a rotating Hele-Shaw cell, under the influence of an in-plane radial magnetic field. We focus on the situation in which destabilizing bulk magnetic field effects are balanced by stabilizing centrifugal forces. In this framing, we consider the interplay of capillary and magnetic normal traction effects in determining the fluid-fluid interface morphology. By employing a vortex-sheet formalism we have been able to find a family of exact stationary N-fold polygonal shape solutions for the interface. A weakly nonlinear theory is then used to verify that such exact interfacial solutions are in fact stable. We thank CNPq (Brazilian Research Council) for financial support.

  11. Non-modal linear stability analysis of miscible viscous fingering in a Hele-Shaw cell

    CERN Document Server

    Hota, Tapan Kumar; Mishra, Manoranjan

    2015-01-01

    For miscible viscous fingering (VF) in a Hele-Shaw cell or in two dimensional homogeneous porous media, the transient growth of disturbances is investigated by non-modal linear stability analysis (NMA). Due to the non-autonomous nature of the linearized perturbed equations, the linear stability theory prohibits using the normal mode analysis. The linearized perturbed equations for Darcy's law coupled with a convection-diffusion equation is discretized using finite difference method. The resultant matrix valued initial value problem is then solved by fourth order Runge-Kutta method, followed by a singular value decomposition (SVD) of the propagator matrix. We demonstrate the dominant perturbation that experiences the maximum amplification within the linear regime which lead to the transient growth. This feature was previously unattained in the existing linear stability methods for miscible VF. To explore the relevance of the optimal perturbation obtained from non-modal analysis of the physical system, we perfo...

  12. Janus Gel Fabrication Using Liquid Drop Coalescence and Limited Mixing in the Hele-Shaw Geometry

    Science.gov (United States)

    Gonzalez, Brittany; Moran, Alexis; Lee, Donghee; Ryu, Sangjin

    2015-11-01

    Hydrogel substrates of tunable stiffness have been actively utilized for in vitro cell mechanobiology study. Here we present a new method to fabricate Janus polyacrylamide gel based on limited mixing between liquid drops coalescing in the Hele-Shaw geometry. Two pre-polymer drops with different concentrations were sandwiched and squeezed between two parallel glass surfaces. Once the drops coalesced in the decreased gap between the surfaces, gelation was initiated by UV light exposure with various time delays. AFM nano-indentation was utilized to map the Young's modulus of obtained gels. Fabricated Janus gels had two regions of different Young's moduli interfaced by the stiffness gradient zone, and the width of the gradient zone increased with the delay time. We acknowledge support from Bioengineering for Human Health grant from UNL and UNMC, and NSF REU grant for UNL.

  13. Convective instability and mass transport of diffusion layers in a Hele-Shaw geometry

    CERN Document Server

    Backhaus, Scott; Ecke, R E

    2010-01-01

    We consider experimentally the instability and mass transport of a porous-medium flow in a Hele-Shaw geometry. In an initially stable configuration, a lighter fluid (water) is located over a heavier fluid (propylene glycol). The fluids mix via diffusion with some regions of the resulting mixture being heavier than either pure fluid. Density-driven convection occurs with downward penetrating dense fingers that transport mass much more effectively than diffusion alone. We investigate the initial instability and the quasi steady state. The convective time and velocity scales, finger width, wave number selection, and normalized mass transport are determined for 6,000

  14. Swimming Pattern of Vorticella convallaria Trophont in the Hele-Shaw Confinements

    Science.gov (United States)

    Sotelo, Luz; Davidson, John; Park, Young-Gil; Jung, Sunghwan; Ryu, Sangjin

    2015-11-01

    In the trophont form Vorticella convallariais a sessile stalked ciliate, which consists of an inverted bell-shaped cell body (zooid) and a slender stalk attaching the zooid to a substrate. Under mechanical shearing, the zooid is separated from the stalk and can swim using circular cilia rows around the oral part. Here we present how the stalkless trophont zooid of V. convallariaswims in Hele-Shaw geometries, as a model system for microorganism swimming. After having harvested stalkless zooids, we observed their swimming in water between two glass surfaces with narrow gaps using video microscopy. Based on their swimming trajectories measured with image analysis, we investigated how the swimming pattern of the trophont zooid of V. convallaria was influenced by the constraints. Supported by Nebraska EPSCoR First Award Grant for SR and UTPA URI Award for YP.

  15. Tip Velocity of Viscous Fingers in Shear-Thinning Fluids in a Hele-Shaw Cell

    Science.gov (United States)

    Yamamoto, Takehiro; Kimoto, Ryusuke; Mori, Noriyasu

    Viscous fingering in non-Newtonian fluids in a rectangular Hele-Shaw cell was investigated. The cell was filled with a 0.5 or 1.0wt% aqueous solution of carboxymethylcellulose (CMC), a shear-thinning fluid. Air was injected into the cell and the growth of viscous fingers was observed. The velocity of finger tip was characterized by the pressure gradient. A modified Darcy law was able to describe the characteristics of the tip velocity that the growth rate of the tip velocity increased with increasing pressure gradient in the CMC solutions. The prediction of tip velocity with the modified Darcy law indicated that an effective pressure gradient near the tip was larger than the average pressure gradient between the finger tip and the cell exit and that the rate of increase depended on the cell gap width.

  16. Shocks and finite-time singularities in Hele-Shaw flow

    Energy Technology Data Exchange (ETDEWEB)

    Teodorescu, Razvan [Los Alamos National Laboratory; Wiegmann, P [UNIV OF MONTREAL; Lee, S-y [UNIV OF CHICAGO

    2008-01-01

    Hele-Shaw flow at vanishing surface tension is ill-defined. In finite time, the flow develops cusplike singularities. We show that the ill-defined problem admits a weak dispersive solution when singularities give rise to a graph of shock waves propagating in the viscous fluid. The graph of shocks grows and branches. Velocity and pressure jump across the shock. We formulate a few simple physical principles which single out the dispersive solution and interpret shocks as lines of decompressed fluid. We also formulate the dispersive solution in algebro-geometrical terms as an evolution of Krichever-Boutroux complex curve. We study in details the most generic (2,3) cusp singularity which gives rise to an elementary branching event. This solution is self-similar and expressed in terms of elliptic functions.

  17. A study of gas bubbles in liquid mercury in a vertical Hele-Shaw cell

    Science.gov (United States)

    Klaasen, B.; Verhaeghe, F.; Blanpain, B.; Fransaer, J.

    2014-01-01

    High-quality observations of mesoscopic gas bubbles in liquid metal are vital for a further development of pyrometallurgical gas injection reactors. However, the opacity of metals enforces the use of indirect imaging techniques with limited temporal or spatial resolution. In addition, accurate interface tracking requires tomography which further complicates the design of a high-temperature experimental setup. In this paper, an alternative approach is suggested that circumvents these two main restrictions. By injecting gas in a thin layer of liquid metal entrapped between two flat and closely spaced plates, bubbles in a Hele-Shaw flow regime are generated. The resulting quasi-2D multiphase flow phenomena can be fully captured from a single point of view and, when using a non-wetted transparent plate material, the bubbles can be observed directly. The feasibility of this approach is demonstrated by observations on buoyancy-driven nitrogen bubbles in liquid mercury in a vertical Hele-Shaw cell. By using a moving high-speed camera to make continuous close up recordings of individual bubbles, the position and geometry of these bubbles are quantified with a high resolution along their entire path. After a thorough evaluation of the experimental accuracy, this information is used for a detailed analysis of the bubble expansion along the path. While the observed bubble growth is mainly caused by the hydrostatic pressure gradient, a careful assessment of the volume variations for smaller bubbles shows that an accurate bubble description should account for significant dynamic pressure variations that seem to be largely regime dependent.

  18. The ethics of killing human/great-ape chimeras for their organs: a reply to Shaw et al.

    Science.gov (United States)

    Palacios-González, César

    2016-06-01

    The aim of this paper is to critically examine David Shaw, Wybo Dondorp, and Guido de Wert's arguments in favour of the procurement of human organs from human/nonhuman-primate chimeras, specifically from great-ape/human chimeras. My main claim is that their arguments fail and are in need of substantial revision. To prove this I first introduce the topic, and then reconstruct Shaw et al.'s position and arguments. Next, I show that Shaw et al.: (1) failed to properly apply the subsidiarity and proportionality principles; (2) neglected species overlapping cases in their ethical assessment; (3) ignored the ethics literature on borderline persons; and (4) misunderstood McMahan's two-tiered moral theory. These mistakes render an important part of their conclusions either false or problematic to the point that they would no longer endorse them. Finally I will briefly mention a possible multipolar solution to the human organ shortage problem that would reduce the need for chimeras' organs.

  19. Structure of thallium and lead calculated from Shaw local pseudopotential and molecular dynamics

    Directory of Open Access Journals (Sweden)

    Gasser J. G.

    2011-05-01

    Full Text Available Recently, we (Es Sbihi Phil. Mag 2010 have successfully calculated, by molecular dynamics, the static structure factor of liquid bismuth at different temperatures. Our results were in very good agreement with the Waseda experimental data. Our assumption was to consider the true density of states which presents a gap as measured by Indlekofer (J. Non-Cryst. Solids 1989 and calculated by Hafner-Jank (Phys. Rev. B 1990 for liquid bismuth. The number of electrons at the Fermi energy has been calculated with three conduction electrons for bismuth (number of p electrons. With this assumption, the structures were determined with an effective ion-ion potential constructed from the Shaw local Optimised Model Potential (OMP and the Ichimaru-Utsumi dielectric function. In the present paper, we generalize our assumptions to liquid thallium and lead which also present such a gap. Their calculated structures are also very close to the experimental ones. This confirms that the number of conduction electrons on the Fermi sphere is consistent with the number of p electrons as has been even shown for our electronic transport properties of liquid lead (A. Ben Abdellah, Phys. Rev. B 2003.

  20. Bubble dynamics inside an outgassing hydrogel confined in a Hele-Shaw cell

    Science.gov (United States)

    Haudin, Florence; Noblin, Xavier; Bouret, Yann; Argentina, Médéric; Raufaste, Christophe

    2016-08-01

    We report an experimental study of bubble dynamics in a non-Newtonian fluid subjected to a pressure decrease. The fluid is a hydrogel, composed of water and a synthetic clay, prepared and sandwiched between two glass plates in a Hele-Shaw geometry. The rheological properties of the material can be tuned by the clay concentration. As the imposed pressure decreases, the gas initially dissolved in the hydrogel triggers bubble formation. Different stages of the process are observed: bubble nucleation, growth, interaction, and creation of domains by bubble contact or coalescence. Initially bubble behave independently. They are trapped and advected by the mean deformation of the hydrogel, and the bubble growth is mainly driven by the diffusion of the dissolved gas through the hydrogel and its outgassing at the reactive-advected hydrogel-bubble interface. In this regime, the rheology of the fluid does not play a significant role on the bubble growth. A model is proposed and gives a simple scaling that relates the bubble growth rate and the imposed pressure. Carbon dioxide is shown to be the gas at play, and the hydrogel is degassing at the millimeter scale as a water solution does at a smaller scale. Later, bubbles are not independent anymore. The growth rate decreases, and the morphology becomes more anisotropic as bubbles interact because they are separated by a distance smaller than the individual stress field extension. Our measurements show that the interaction distance scales with the bubbles' size.

  1. Acceleration of convective dissolution by chemical reaction in a Hele-Shaw cell.

    Science.gov (United States)

    Cherezov, Ilia; Cardoso, Silvana S S

    2016-09-14

    New laboratory experiments quantify the destabilising effect of a second-order chemical reaction on the fingering instability of a diffusive boundary layer in a Hele-Shaw cell. We show that, for a given chemical system, the dynamics of such a reactive boundary layer is fully determined by two dimensionless groups, Da/Ra(2), which measures the timescale for convection compared to those for reaction and diffusion, and CBo', which reflects the excess of the environmental reactant species relative to the diffusing solute. Results of a systematic study varying CBo' in the range 0-0.1 are presented. It is shown that the chemical reaction increases the growth rate of a perturbation and favours small wavelengths compared to the inert system. A higher concentration of CBo' not only accelerates the onset of convection, but crucially also increases the transport of the solute by up to 150% compared to the inert system. This increase in solute transfer has important practical implications, such as in the storage of carbon dioxide in saline aquifers.

  2. Instability onset and mixing by diffusive Rayleigh-Benard Convection in a Hele-Shaw Cell

    Science.gov (United States)

    Ehyaei, Dana; Kiger, Ken

    2012-11-01

    The injection and eventual dissolution of carbon dioxide in deep saline aquifers has suggested as an effective means of carbon sequestration. Typical injection conditions produce a buoyantly stable source of CO2 layered on top of the brine, whose dissolution is greatly accelerated by the onset of dissolution-driven, negatively buoyant, convective plumes that develop at the interface. The current work is a study conducted within a Hele-shaw cell, as an analogue for porous media, using working fluids that are mixtures of methanol and ethylene glycol diffusing in water, imitating the convective behavior of CO2 in the brine. The underlying physics of the flow are examined by measuring the velocity field directly via PIV, using appropriate methods to allow quantitative measurement in this thin-gap flow. This technique allows for detailed measurement of the entire evolution of the velocity and vorticity field during onset, growth and saturation of the instabilities. Features of the flow, the mechanisms that govern it and accurate time scales form onset time to later time mixings would be discussed for different Rayleigh numbers ranging from 2000 to 15000.

  3. Interfacial elastic fingering in Hele-Shaw cells: A weakly nonlinear study

    KAUST Repository

    Carvalho, Gabriel D.

    2013-11-11

    We study a variant of the classic viscous fingering instability in Hele-Shaw cells where the interface separating the fluids is elastic, and presents a curvature-dependent bending rigidity. By employing a second-order mode-coupling approach we investigate how the elastic nature of the interface influences the morphology of emerging interfacial patterns. This is done by focusing our attention on a conventionally stable situation in which the fluids involved have the same viscosity. In this framework, we show that the inclusion of nonlinear effects plays a crucial role in inducing sizable interfacial instabilities, as well as in determining the ultimate shape of the pattern-forming structures. Particularly, we have found that the emergence of either narrow or wide fingers can be regulated by tuning a rigidity fraction parameter. Our weakly nonlinear findings reinforce the importance of the so-called curvature weakening effect, which favors the development of fingers in regions of lower rigidity. © 2013 American Physical Society.

  4. A pancake droplet translating in a Hele-Shaw cell: lubrication film and flow field

    CERN Document Server

    Zhu, Lailai

    2016-01-01

    We adopt a boundary integral method to study the dynamics of a translating droplet confined in a Hele-Shaw cell in the Stokes regime. The droplet is driven by an ambient fluid with the same viscosity. We characterise the three-dimensional (3D) nature of the droplet interface and of the flow field. The interface develops an arc-shaped ridge near the rear-half rim with a protrusion in the rear and a laterally symmetric pair of higher peaks; this pair of protrusions has been identified by the recent experiments (Huerre et al. 2015) and predicted asymptotically (Burgess & Foster 1990). The mean film thickness is well predicted by the extended Bretherton model (Klaseboer et al. 2014) with fitting parameters. The flow in the streamwise wall-normal middle plane is featured with recirculating zones, which are partitioned by stagnation points closely resembling those of a two-dimensional droplet in a channel. Recirculation is absent in the wall-parallel, unconfined, planes, in sharp contrast to the interior flow i...

  5. Coalescence dynamics of a Non-Newtonian drop in a Hele-Shaw cell

    Science.gov (United States)

    Angeli, Panagiota; Voulgaropoulos, Victor; Chinaud, Maxime

    2016-11-01

    In this study, the quasi-2D coalescence of an aqueous droplet with a flat interface is studied. The two immiscible liquids used in the coalescence experiments are a water/glycerol mixture and low viscosity oil. Experiments are conducted in a Hele-Shaw cell with an aspect ratio of 14 by 8 by 0.125 cm while time resolved velocity fields are obtained by using high-speed bright field Particle Image Velocimetry measurements. The aim of the present study is to investigate the effect of a polymer (i.e. xanthan gum), which results in a shear-thinning behaviour of the aqueous phase. It was found that the time evolution of the neck at the initial stages of coalescence follows a linear trend, which suggests that the shear-thinning behaviour at the neck region at this stage of coalescence can be considered quasi-constant in time. In addition, velocity and vorticity fields are computed inside the coalescing droplet and the bulk homophase. It is found that two pair of counter rotating vortices are generated just after the rupture of the film which separates the drop from the homophase. Furthermore, the polymer addition reduced the magnitude of the corresponding vorticity peaks in the drop and slowed down the coalescence dynamics. Project funded under the UK Engineering and Physical Sciences Research Council (EPSRC) Programme Grant MEMPHIS.

  6. Interaction Forces Between Microfluidic Droplets in a Hele-Shaw Cell

    CERN Document Server

    Sarig, Itai; Gat, Amir D

    2015-01-01

    Various microfluidic systems, such as chemical and biological lab-on-a-chip devices, involve motion of multiple droplets within an immersing fluid in shallow micro-channels. Modeling the dynamics of such systems requires calculation of the forces of interaction between the moving droplets. These forces are commonly approximated by superposition of dipoles solutions, which requires an assumption of sufficiently large distance between the droplets. In this work we obtain exact solutions (in the Hele-Shaw limit) for two moving droplets, and a droplet within a droplet, located within a moving immersing fluid, without limitation on the distance between the droplets. This is achieved by solution of the pressure field in a bi-polar coordinate system and calculation of the force in a Cartesian coordinate system. Our results are compared with numerical computations, experimental data and the existing dipole-based models. We utilize the results to calculate the dynamics of a droplet within a droplet, and of two close d...

  7. Interaction forces between microfluidic droplets in a Hele-Shaw cell

    Science.gov (United States)

    Sarig, I.; Starosvetsky, Y.; Gat, A. D.

    2016-08-01

    Various microfluidic systems, such as chemical and biological lab-on-a-chip devices, involve motion of multiple droplets within an immersing fluid in shallow micro-channels. Modeling the dynamics of such systems requires calculation of the forces of interaction between the moving droplets. These forces are commonly approximated by superposition of dipoles solutions, which requires an assumption of sufficiently large distance between the droplets. In this work we obtain exact solutions (in the Hele-Shaw limit) for two moving droplets, and a droplet within a droplet, located within a moving immersing fluid, without limitation on the distance between the droplets. This is achieved by solution of the pressure field in a bi-polar coordinate system and calculation of the force in a Cartesian coordinate system. Our results are compared with numerical computations, experimental data and the existing dipole-based models. We utilize the results to calculate the dynamics of a droplet within a droplet, and of two close droplets, located within an immersing fluid with oscillating speed. The obtained results may be used to study the dynamics of dense droplet lattices, common to many microfluidic systems.

  8. Dynamics of viscous fingers in rotating Hele-Shaw cells with Coriolis effects.

    Science.gov (United States)

    Gadêlha, Hermes; Brito, Nielison; Miranda, José A

    2007-01-01

    A growing number of experimental and theoretical works have been addressing various aspects of the viscous fingering formation in rotating Hele-Shaw cells. However, only a few of them consider the influence of Coriolis forces. The studies including Coriolis effects are mostly restricted to the high-viscosity-contrast limit and rely on either purely linear stability analyses or intensive numerical simulations. We approach the problem analytically and use a modified Darcy's law including the exact form of the Coriolis effects to execute a mode-coupling analysis of the system. By imposing no restrictions on the viscosity contrast A (dimensionless viscosity difference) we go beyond linear stages and examine the onset of nonlinearities. Our results indicate that when Coriolis effects are taken into account, an interesting interplay between the Reynolds number Re and A arises. This leads to important changes in the stability and morphological features of the emerging interfacial patterns. We contrast our mode-coupling approach with previous theoretical models proposed in the literature.

  9. Assessment of beneficial role of an insectivorous bird, jungle babbler (Turdoides striatus predation, on Helicoverpa armigera infesting pigeon pea (Cajanus cajan crop Evaluación del rol benéfico de Turdoides striatus como predator de Helicoverpa armigera en el cultivo de guandul (Cajanus cajan

    Directory of Open Access Journals (Sweden)

    Bhavna Bharucha

    2010-04-01

    Full Text Available Jungle babbler (Turdoides striatus, a widely spread sub-tropical insectivorous passerine is considered beneficial to agro-ecosystem, as they devour voraciously on insect matter especially Helicoverpa armigera, the gram pod borer, a notorious pest infesting and causing heavy loses to crops like pigeon pea (Cajanus cajan which is a vital crop of semi-arid tropical and subtropical farming system, providing high quality vegetable protein. Helicoverpa is known to feed on flowers, pods, and seeds and is the most important biotic constraint affecting pigeon pea yields. Jungle babblers have a peculiar foraging style which helps expose the Helicoverpa larvae as well as pupae through various phenological stages of pigeon pea. For comparative assessment of their beneficial role and as a possible bio control agent, in Baroda city (State of Gaujarat, India, was studied, two crops of pigeon pea (insecticide treated and untreated (control were selected. In both treated and control crops, the number of jungle babblers were maximum in pigeon pea fields during october and november in both small pod stage and large pod stage which had heavy infestation of Helicoverpa. Least number of birds was seen during the flowering stage in September. Later in treatment crop three applications of Dunnate and Monocrotophos insecticide spray was done after which the pest population decreased which is reflected in number of birds in the field, while the bird number in control crops grew since insecticide spray was not done and number of larvae increased with the stage of the crop. Along with the main crop pigeon pea, comparative study was also done to see the food preference by these birds in crops like sorghum, maize, cow pea and ploughed and unploughed fields. Maximum number of birds was seen in unploughed field and least in sorghum suggesting that Helicoverpa is preferred food over sorghum grains thus pigeon pea and sorghum can be used as mixed crops to protect the crop from

  10. Gravitational instability due to the dissolution of carbon dioxide in a Hele-Shaw cell

    Science.gov (United States)

    Vreme, A.; Nadal, F.; Pouligny, B.; Jeandet, P.; Liger-Belair, G.; Meunier, P.

    2016-10-01

    We present an experimental study of the gravitational instability triggered by dissolution of carbon dioxide through a water-gas interface. We restrict the study to vertical parallelepipedic Hele-Shaw geometries, for which the thickness is smaller than the other dimensions. The partial pressure of carbon dioxide is quickly increased, leading to a denser layer of CO2-enriched water underneath the surface. This initially one-dimensional diffusive layer destabilizes through a convection-diffusion process. The concentration field of carbon dioxide, which is visualized by means of a pH-sensitive dye, shows a fingering pattern whose characteristics (wavelength and amplitude growth rate) are functions of the Rayleigh (Ra) and the Darcy (Da) numbers. At low Rayleigh numbers, the growth rate and the wave numbers are independent of the Rayleigh number and in excellent agreement with the classical results obtained numerically and theoretically in the Darcy regime. However, above a threshold of Ra√{Da} of the order of 10, the growth rate and the wave number strongly decrease due to the Brinkman term associated with the viscous diffusion in the vertical and longitudinal directions. In this Darcy-Brinkman regime, the growth rate and the wave number depend only on the thickness-based Rayleigh number Ra√{Da} . The classical Rayleigh-Taylor theory including the Brinkman term has been extended to this diffusive gravitational instability and gives an excellent prediction of the growth rate over four decades of Rayleigh numbers. However, the Brinkman regime seems to be valid only until Ra√{Da}=1000 . Above this threshold, the transverse velocity profile is no longer parabolic, which leads to an overestimation of the wave number by the theory.

  11. Histopathology and bioaccumulation of heavy metals (Cr, Ni and Pb) in fish (Channa striatus and Heteropneustes fossilis) tissue: a study for toxicity and ecological impacts.

    Science.gov (United States)

    Fatima, Mahino; Usmani, Nazura

    2013-05-01

    Abstract: The water samples were collected from the 22 km segment III of Yamuna River from Okhla barrage. This segment receives water from 17 sewage drains of Delhi, Western Yamuna Canal (WYC), upper Ganga canal via Najafgarh drain and Hindon cut canal. Hence, the water samples collected were used to determine the presence of Chromium, Nickel and Lead through Atomic Absorption Spectrophotometry. The concentration of these heavy metals were much above the maximum permissible limits set by WHO. This was bound to have its influence on the riverine flora and fauna. To evaluate this, two popularly consumed fish species such as Channa striatus and Heteropneustes fossilis were caught and the bioaccumulation of these heavy metals were estimated in different organs (liver, kidney, gill and muscle). It was found that Cr accumulated the most in these organs (gill being most influenced) in both the species. The accumulation of all these heavy metals were above MPL set by World Health Organisation (WHO) and Food and Drug Administration (FDA). Histopathology was also conducted where heavy damages were observed in both liver and kidney of both the species.

  12. A POSTERIORI ERROR ESTIMATES FOR FINITE ELEMENT APPROXIMATIONS OF THE CAHN-HILLIARD EQUATION AND THE HELE-SHAW FLOW

    Institute of Scientific and Technical Information of China (English)

    Xiaobing Feng; Haijun Wu

    2008-01-01

    This paper develops a posteriori error estimates of residual type for conforming and mixed finite element approximations of the fourth order Cahn-Hilliard equation ut +△ (ε△μ-ε-1f(u))=0. It is shown that the a posteriori error bounds depends on ε-1 only in some low polynomial order, instead of exponential order. Using these a posteriori error estimates, we construct an adaptive algorithm for computing the solution of the Cahn-Hilliard equation and its sharp interface limit, the Hele-Shaw flow. Numerical experiments are presented to show the robustness and effectiveness of the new error estimators and the proposed adaptive algorithm.

  13. Effects of circular rigid boundaries and Coriolis forces on the interfacial instability in a rotating annular Hele-Shaw cell.

    Science.gov (United States)

    Abidate, Asmaa; Aniss, Said; Caballina, Ophélie; Souhar, Mohamed

    2007-04-01

    We report analytical results for the development of instability of an interface between two immiscible, Newtonian fluid layers confined in a rotating annular Hele-Shaw cell. We perform a linear stability analysis and focus our study on the influence of both Coriolis force and curvature parameters on the interface instability growth rate. The results show that the Coriolis force does not alter the stability of a disturbance with a particular wave number but reduces the maximum growth rate. The results related to the role played by the confinement of the liquid layers are also shown to provide a modification of the fastest-growing mode and its corresponding linear growth rate.

  14. Waves on a Hele-Shaw Cell: Simulations of Acoustic Emissions During Aerofracture

    Science.gov (United States)

    Turkaya, Semih; Toussaint, Renaud; Kvalheim Eriksen, Fredrik; Daniel, Guillaume; Grude Flekkøy, Eirik; Jørgen Måløy, Knut

    2016-04-01

    In this work, we develop a numerical model to explain the lab scale experimental setup [1] modeling the aerofractures in a porous medium. The mentioned experimental setup consists in a rectangular Hele-Shaw cell with three closed boundaries and one semi-permeable boundary which enables the flow of the fluid but not the solid particles. During the experiments, the fluid (pressurized air) is injected into the system with a constant injection pressure from the point opposite to the semi-permeable boundary. At the large enough injection pressures, the fluid also displaces grains (80 μm grain size) and creates channels and fractures towards the semi-permeable boundary. This analogue model is developed in a linear geometry, with confinement and at a lower porosity to study the instabilities developing during the fast motion of a fluid in dense porous materials: fracturing, fingering, and channeling. Different sources of the signal (air vibration in the carved area, changes in the effective stress due to fluid-solid interactions [2]) are separately analyzed and are investigated further using a far field approximation of Lamb waves presented by Goyder & White [3]. In the analysis phase, power spectrum of different timewindows (5 ms) obtained from the recorded signal are computed. Then, the evolution of this power spectrum is compared with the experimental findings. In the power spectrum, it is possible to see some characteristic structure like peaks in specific frequency ranges. These "peaks" are strongly influenced by the size and branching of the channels, compaction of the medium, vibration of air in the pores and the fundamental frequency of the plate. We found that, in the synthetic dataset, the peaks in the low frequency range (f Bridging aero-fracture evolution with the characteristics of the acoustic emissions in a porous medium." Front. Phys., 3 (2015): 70. doi: 10.3389/fphy.2015.00070 2. Niebling MJ, Toussaint R, Flekkøy EG, Maløy KJ. "Dynamic aerofracture of

  15. Droplet migration in a Hele-Shaw microchannel: Effect of the lubrication film on the droplet dynamics

    CERN Document Server

    Ling, Yue; Popinet, Stéphane; Josserand, Christophe

    2016-01-01

    Droplet migration in a Hele-Shaw microchannel is a fundamental multiphase flow problem which is crucial to many microfluidics applications. We focus on the regime at low capillary number, where the droplet keeps a circular shape in the horizontal plane. Parametric studies are performed on the droplet horizontal radius and the capillary number, and particular attention is paid to the effect of the lubrication film on the droplet velocity. For droplets with an horizontal radius larger than half of the channel height, the droplet overfills the channel and a lubrication film is formed between the droplet and the wall. The lubrication film is shown to have a strong impact on the droplet migration velocity and the three-dimensional flow structure. The droplet velocity in the present simulation is shown to be lower than the average inflow velocity, in contrast with the Taylor-Saffman theory for Hele-Shaw flows, but in agreement with experimental measurements. Both the strong shear induced by the lubrication film and...

  16. 成人线状苔藓7例临床及组织病理分析%Clinical and histopathological analysis of 7 cases of lichen striatus in adults

    Institute of Scientific and Technical Information of China (English)

    巴伟; 王文娟; 丁香玉; 王祎琳; 李承新

    2016-01-01

    Objective To evaluate the clinical and histopathological characteristics of lichen striatus in adults. Methods A retrospective analysis of 7 cases of lichen striatus in adults was carried out. Results The mean age of the cases(1male and 6 female) was 39.1years(ranging from 20 to 61years). Five patients had lesions on the trunk and neck, 2 on the extremities. All lesions located on the left in 4 cases, right in 3 cases. Clinically, lichen striatus presented with erythematous or brownish papules with a flattened surface that were frequently scaly in appearance and formed a linear distribution following Blaschko’s lines, sometimes accompanied by pigmentation. Pathologically, almost all the sections showed focal interface dermatitis or lichenoid patterns at the dermal-epidermal junction with lymphocytic infiltrate around either eccrine glands or hair follicles. Conclusion Lichen striatus in adults is rare in practice. Comprehensive analysis of the clinical manifestations and histopathological changes is the key of making a correct diagnosis.%目的:分析7例成人线状苔藓的临床及组织病理特点。方法采用回顾性分析对7例成人线状苔藓的临床及组织病理资料进行分析。结果7例患者中男1例,女6例,平均年龄39.1岁(20~61岁)。皮损位于躯干及颈部者5例,四肢者2例;左侧4例,右侧3例。临床上主要表现为沿 Blaschko 线分布的肤色或淡红色鳞屑性丘疹,部分有色素沉着;组织病理上局灶性或苔藓样界面皮炎及附属器周围淋巴细胞浸润具有特征性,是重要的诊断线索。结论成人线状苔藓临床上少见,临床表现结合组织病理检查是诊断的关键。

  17. Factors influencing pathogenicity ofUromyces striatus%苜蓿锈病病菌侵染条件的研究

    Institute of Scientific and Technical Information of China (English)

    李跃; 袁庆华

    2015-01-01

    通过恒温箱和温室试验,探索了不同的保湿时间和温度对苜蓿锈菌孢子堆密度的影响以及不同培养温度对病害潜育期的影响。19℃下保湿(相对空气湿度100%)一定时间,再在25℃下生长15 d,可见保湿时间在12~48 h处理中植株叶片上孢子堆密度高于4~8 h。不同保湿温度下,保湿(相对空气湿度100%)24 h,再在25℃下生长15 d,试验结果表明随着保湿温度的升高,孢子堆密度先逐渐增加,在19℃左右达到最大,之后逐渐降低。19℃下,100%相对湿度下保湿24 h,然后分别置于15,20,25,30和35℃下生长,只有35℃下不发病,其余温度下潜育期分别为11,10,7和7 d;培养温度在25和30℃下的孢子堆密度显著高于15和20℃;培养温度对孢子堆显现时间的长短影响不大。%Uromyces striatus is the causal organism of alfalfa rust.The effects of humidity,temperature and time on disease severity and the effects of incubation temperature on the latent period of alfalfa rust were inves-tigated using growth chamber and greenhouse experiments,respectively.Alfalfa plants were inoculated with U .striatus and incubated at 19℃ with 100% relative humidity (RH)for different periods before being trans-ferred to 25℃ conditions for 15 days.Subsequently,spore densities on the leaves of inoculated plants were as-sessed.The results showed that spore density of treatments incubated at 19℃ for 12 h to 48 h was significantly higher than those incubated for 4 h to 8 h.Plants were also inoculated and incubated at 19℃ with 100% RH for 24 h and then transferred to different temperature environments;15,20,25,30 and 35℃.Plants transferred to 35℃ conditions did not display any alfalfa rust symptoms.The disease latent period on inoculated plants grown at 15,20,25 and 30℃ was 11,10,7 and 7 days,respectively.The spore density on leaves in the 25 and 30℃ treatments was significantly higher than

  18. Henry Selby Hele-Shaw LLD, DSc, EngD, FRS, WhSch (1854-1941: Engineer, inventor and educationist

    Directory of Open Access Journals (Sweden)

    Jane Carruthers

    2010-03-01

    Full Text Available H.S. Hele-Shaw (1854–1941 was one of the most outstanding engineering scientists of his generation and an eminent figure in engineering education during the late-19th and early-20th centuries. His work in hydrodynamics (the Hele-Shaw cell and Hele-Shaw pump and his important contribution to the successful development of high-speed aircraft (his variable pitch airscrew, continues to be relevant today. In 1922, as President of the Institution of Mechanical Engineers, he introduced the National Certificate scheme in Britain. It is not well known that Hele-Shaw spent two years in South Africa (1904–1905 attached to the Transvaal Technical Institute, a forerunner of the University of the Witwatersrand. One of only three Fellows of the Royal Society of London in southern Africa in 1905, he was a founder Council member of the Royal Society of South Africa and one of the hosts of the 1905 visit to southern Africa by the British Association for the Advancement of Science. The purpose of this paper is to highlight the time he spent in South Africa and to contextualise it within the larger perspective of his engineering career.

  19. Bringing Froebel into London's Infant Schools: The Reforming Practice of Two Head Teachers, Elizabeth Shaw and Frances Roe, from the 1890s to the 1930s

    Science.gov (United States)

    Read, Jane

    2013-01-01

    This article explores how infant school reform took hold in London's schools from the 1890s to the 1930s through examination of the work of two Froebelian head teachers, Elizabeth Mary Shaw and Frances Emily Roe. In contrast to teacher-led rote-learning methods and rigid discipline they implemented play-based activities drawing on children's…

  20. Three-dimensional effects in directional solidification in hele-shaw cells: nonlinear evolution and pattern selection

    Science.gov (United States)

    Ajaev; Davis

    2000-02-01

    Directional solidification of a dilute binary alloy in a Hele-Shaw cell is modeled by a long-wave nonlinear evolution equation with zero flux and contact-angle conditions at the walls. The basic steady-state solution and its linear stability criteria are found analytically, and the nonlinear system is solved numerically. Concave-down (toward the solid) interfaces under physically realistic conditions are found to be more unstable than the planar front. Weakly nonlinear analysis indicates that subcritical bifurcation is promoted, the domain of modulational instability is expanded and transition to three-dimensional patterns is delayed due to the contact-angle condition. In the strongly nonlinear regime fully three-dimensional steady-state solutions are found whose characteristic amplitude is larger than that for the two-dimensional problem. In the subcritical regime secondary bifurcation to stable solutions is promoted.

  1. On a three-layer Hele-Shaw model of enhanced oil recovery with a linear viscous profile

    CERN Document Server

    Daripa, Prabir; Meneses, Rodrigo

    2015-01-01

    We present a non-standard eigenvalue problem that arises in the linear stability of a three-layer Hele-Shaw model of enhanced oil recovery. A nonlinear transformation is introduced which allows reformulation of the non-standard eigenvalue problem as a boundary value problem for Kummer's equation when the viscous profile of the middle layer is linear. Using the existing body of works on Kummer's equation, we construct an exact solution of the eigenvalue problem and provide the dispersion relation implicitly through the existence criterion for the non-trivial solution. We also discuss the convergence of the series solution. It is shown that this solution reduces to the physically relevant solutions in two asymptotic limits: (i) when the linear viscous profile approaches a constant viscous profile; or (ii) when the length of the middle layer approaches zero.

  2. Morphological stability of an interface between two non-Newtonian fluids moving in a Hele-Shaw cell.

    Science.gov (United States)

    Martyushev, L M; Birzina, A I

    2015-01-01

    The problem of the morphological stability of an interface in the case of the displacement of one non-Newtonian fluid by another non-Newtonian fluid in a radial Hele-Shaw cell has been considered. Both fluids have been described by the two-parameter Ostwald-de Waele power-law model. The nonzero viscosity of the displacing fluid has been taken into account. A generalized Darcy's law for the system under consideration, as well as an equation for the determination of the critical size of morphological stability with respect to harmonic perturbations (linear analysis), has been derived. Morphological phase diagrams have been constructed, and the region of the parameters in which nonequilibrium reentrant morphological transitions are possible has been revealed.

  3. Scaling crossover in thin-film drag dynamics of fluid drops in the Hele-Shaw cell

    CERN Document Server

    Yahashi, Misato; Okumura, Ko

    2016-01-01

    We study both experimentally and theoretically the descending motion due to gravity of a fluid drop surrounded by another immiscible fluid in a confined space between two parallel plates, i.e., in the Hele-Shaw cell. As a result, we show a new scaling regime of a nonlinear drag friction in viscous liquid that replaces the well-known Stokes' drag friction through a clear collapse of experimental data thanks to the scaling law. In the novel regime, the dissipation in the liquid thin film formed between the drop and cell walls governs the dynamics. The crossover of this scaling regime to another scaling regime in which the dissipation inside the droplet is dominant is clearly demonstrated and a phase diagram separating these scaling regimes is presented.

  4. Of mice and men: evolution and the socialist utopia. William Morris, H.G. Wells, and George Bernard Shaw.

    Science.gov (United States)

    Hale, Piers J

    2010-01-01

    During the British socialist revival of the 1880s competing theories of evolution were central to disagreements about strategy for social change. In News from Nowhere (1891), William Morris had portrayed socialism as the result of Lamarckian processes, and imagined a non-Malthusian future. H.G. Wells, an enthusiastic admirer of Morris in the early days of the movement, became disillusioned as a result of the Malthusianism he learnt from Huxley and his subsequent rejection of Lamarckism in light of Weismann's experiments on mice. This brought him into conflict with his fellow Fabian, George Bernard Shaw, who rejected neo-Darwinism in favour of a Lamarckian conception of change he called "creative evolution."

  5. 后结构主义视阈中的萧伯纳研究——评彼得·盖恩的《萧的影子:重读萧伯纳文本》%A Review of Shaw Shadows : Rereading the Texts of Bernard Shaw by Peter Gahan

    Institute of Scientific and Technical Information of China (English)

    杜鹃

    2012-01-01

    Among recently published foreign monographs on Shaw, Shaw Shadows:Rereading the Texts of Bernard Shaw, written by Peter Gahan and published by University Press of Florida in 2004, has a more innovative perspective and a broader academic vision. Based on post-structural theories,the author interprets Shaw' s texts, and expands research on Shaw to a broader field of discourses in philosophy/literary dimension. Therefore, it demonstrates the characteristics of deconstruction of traditional definition, decentralization and multiple interpretations, and provides some enlightenment for domestic research on Shaw.%在国外近年出版的萧伯纳研究专著中,由佛罗里达大学出版社2004年出版的彼得·盖恩撰写的《萧的影子:重读萧伯纳文本》研究视角更显新颖、学术视野更为开阔。作者把萧伯纳文本置于后结构主义的理论背景下进行阐释,从哲学/文学的向度把萧伯纳研究拓展到一个更为宽泛的话语领域,呈现出消解传统定义、去中心、多义化的特点,对于国内的萧伯纳研究理应有所启发。

  6. Assessment of beneficial role of an insectivorous bird, jungle babbler (Turdoides striatus predation, on Helicoverpa armigera infesting pigeon pea (Cajanus cajan crop

    Directory of Open Access Journals (Sweden)

    Bhavna Bharucha

    2010-04-01

    Full Text Available Jungle babbler (Turdoides striatus, a widely spread sub-tropical insectivorous passerine is considered beneficial to agro-ecosystem, as they devour voraciously on insect matter especially Helicoverpa armigera, the gram pod borer, a notorious pest infesting and causing heavy loses to crops like pigeon pea (Cajanus cajan which is a vital crop of semi-arid tropical and subtropical farming system, providing high quality vegetable protein. Helicoverpa is known to feed on flowers, pods, and seeds and is the most important biotic constraint affecting pigeon pea yields. Jungle babblers have a peculiar foraging style which helps expose the Helicoverpa larvae as well as pupae through various phenological stages of pigeon pea. For comparative assessment of their beneficial role and as a possible bio control agent, in Baroda city (State of Gaujarat, India, was studied, two crops of pigeon pea (insecticide treated and untreated (control were selected. In both treated and control crops, the number of jungle babblers were maximum in pigeon pea fields during october and november in both small pod stage and large pod stage which had heavy infestation of Helicoverpa. Least number of birds was seen during the flowering stage in September. Later in treatment crop three applications of Dunnate and Monocrotophos insecticide spray was done after which the pest population decreased which is reflected in number of birds in the field, while the bird number in control crops grew since insecticide spray was not done and number of larvae increased with the stage of the crop. Along with the main crop pigeon pea, comparative study was also done to see the food preference by these birds in crops like sorghum, maize, cow pea and ploughed and unploughed fields. Maximum number of birds was seen in unploughed field and least in sorghum suggesting that Helicoverpa is preferred food over sorghum grains thus pigeon pea and sorghum can be used as mixed crops to protect the crop from

  7. Assessment of beneficial role of an insectivorous bird, jungle babbler (Turdoides striatus predation, on Helicoverpa armigera infesting pigeon pea (Cajanus cajan crop

    Directory of Open Access Journals (Sweden)

    Bharucha Bhavna

    2010-06-01

    Full Text Available Jungle babbler (Turdoides striatus, a widely spread sub-tropical insectivorous passerine is considered beneficial to agro-ecosystem, as they devour voraciously on insect matter especially Helicoverpa armigera, the gram pod borer, a notorious pest infesting and causing heavy loses to crops like pigeon pea (Cajanus cajan which is a vital crop of semi-arid tropical and subtropical farming system, providing high quality vegetable protein. Helicoverpa is known to feed on flowers, pods, and seeds and is the most important biotic constraint affecting pigeon pea yields. Jungle babblers have a peculiar foraging style which helps expose the Helicoverpa larvae as well as pupae through various phenological stages of pigeon pea. For comparative assessment of their beneficial role and as a possible bio control agent, in Baroda city (State of Gaujarat, India, was studied, two crops of pigeon pea (insecticide treated and untreated (control were selected. In both treated and control crops, the number of jungle babblers were maximum in pigeon pea fields during october and november in both small pod stage and large pod stage which had heavy infestation of Helicoverpa. Least number of birds was seen during the flowering stage in September. Later in treatment crop three applications of Dunnate and Monocrotophos insecticide spray was done after which the pest population decreased which is reflected in number of birds in the field, while the bird number in control crops grew since insecticide spray was not done and number of larvae increased with the stage of the crop. Along with the main crop pigeon pea, comparative study was also done to see the food preference by these birds in crops like sorghum, maize, cow pea and ploughed and unploughed fields. Maximum number of birds was seen in unploughed field and least in sorghum suggesting that Helicoverpa is preferred food over sorghum grains thus pigeon pea

  8. Society News: Welcome to Griffiths Bay; RAS Associate wins Shaw Prize; Postgraduate prize preparations; Council minutes on-line; Birthday Honours; Kavli Prize; New Fellows

    Science.gov (United States)

    2008-08-01

    The late Donald Griffiths will be commemorated in the name of a bay on the Antarctic Peninsula. Prof. Reinhard Genzel, Associate of the Society since 1994, Darwin Lecturer in 2007, and Director of the Max Planck Institute for Extraterrestrial Physics has been awarded the Shaw Prize in Astronomy for 2008. While postgrad students complete their PhD theses, supervisors should note the deadline for submissions to the annual Michael Penston and Keith Runcorn Prizes.

  9. A volume-of-fluid formulation for the study of co-flowing fluids governed by the Hele-Shaw equations

    CERN Document Server

    Afkhami, Shahriar

    2013-01-01

    We present a computational framework to address the flow of two immiscible viscous liquids which co-flow into a shallow rectangular container at one side, and flow out into a holding container at the opposite side. Assumptions based on the shallow depth of the domain are used to reduce the governing equations to one of Hele-Shaw type. The distinctive feature of the numerical method is the accurate modeling of the capillary effects. A continuum approach coupled with a volume-of-fluid formulation for computing the interface motion and for modeling the interfacial tension in Hele-Shaw flows is formulated and implemented. The interface is reconstructed with a height-function algorithm. The combination of these algorithms is a novel development for the investigation of Hele-Shaw flows. The order of accuracy and convergence properties of the method are discussed with benchmark simulations. A microfluidic flow of a ribbon of fluid which co-flows with a second liquid is simulated. We show that for small capillary num...

  10. Observation of two coupled Faraday waves in a vertically vibrating Hele-Shaw cell with one of them oscillating horizontally

    CERN Document Server

    Li, Xiaochen; Liao, Shijun

    2016-01-01

    A system of two-dimensional, two coupled Faraday interfacial waves is experimentally observed at the two interfaces of the three layers of fluids (air, pure ethanol and silicon oil) in a sealed Hele-Shaw cell with periodic vertical vibration. The upper and lower Faraday waves coexist: the upper vibrates vertically, but the crests of the lower one oscillate horizontally with unchanged wave height and a frequency equal to the half of the forcing one of the vertically vibrating basin, while the troughs of the lower one always stay in the same place (relative to the basin). Besides, they are strongly coupled: the wave height of the lower Faraday wave is either a linear function (in the case of a fixed forcing frequency) or a parabolic function (in the case of a fixed acceleration amplitude) of that of the upper, with the same wave length. In addition, the upper Faraday wave temporarily loses its smoothness at around $t=T/4$ and $t=3T/4$, where $T$ denotes the wave period, and thus has fundamental difference from ...

  11. Transient Dynamics of Elastic Hele-Shaw Cell Due to External Forces with Application to Impulse Mitigation

    CERN Document Server

    Tulchinsky, Arie

    2015-01-01

    We study the transient dynamics of a viscous liquid contained in a narrow gap between a rigid surface and a parallel elastic plate. The elastic plate is deformed due to an externally applied time-varying pressure-field. We model the flow-field via the lubrication approximation, and the plate deformation by the Kirchhoff-Love plate theory. We obtain a self-similarity solution for the case of an external point force acting on the elastic plate. The pressure and deformation field during and after the application of the external force are derived and presented by closed form expressions. We examine a uniform external pressure acting on the elastic plate over a finite region and during a finite time period, similar to the viscous-elastic interaction time-scale. The interaction between elasticity and viscosity is shown to reduce by order of magnitude the pressure within the Hele-Shaw cell compared with the externally applied pressure, thus suggesting such configurations may be used for impact mitigation.

  12. Effects of testosterone on contractile properties of sexually dimorphic forelimb muscles in male bullfrogs (Rana catesbeiana, Shaw 1802

    Directory of Open Access Journals (Sweden)

    Aaron R. Kampe

    2013-07-01

    This study examined the effects of testosterone (T on the contractile properties of two sexually dimorphic forelimb muscles and one non-dimorphic muscle in male bullfrogs (Rana catesbeiana, Shaw 1802. The dimorphic muscles in castrated males with testosterone replacement (T+ achieved higher forces and lower fatigability than did castrated males without replaced testosterone (T0 males, but the magnitude of the differences was low and many of the pair-wise comparisons of each muscle property were not statistically significant. However, when taken as a whole, the means of seven contractile properties varied in the directions expected of masculine values in T+ animals in the sexually dimorphic muscles. Moreover, these data, compared with previous data on male and female bullfrogs, show that values for T+ males are similar to normal males and are significantly different from females. The T0 males tended to be intermediate in character between T+ males and females, generally retaining masculine values. This suggests that the exposure of young males to T in their first breeding season produces a masculinizing effect on the sexually dimorphic muscles that is not reversed between breeding seasons when T levels are low. The relatively minor differences in contractile properties between T+ and T0 males may indicate that as circulating T levels rise during breeding season in normal males, contractile properties can be enhanced rapidly to maximal functional levels for breeding success.

  13. A well-posed numerical method to track isolated conformal map singularities in Hele-Shaw flow

    Science.gov (United States)

    Baker, Gregory; Siegel, Michael; Tanveer, Saleh

    1995-01-01

    We present a new numerical method for calculating an evolving 2D Hele-Shaw interface when surface tension effects are neglected. In the case where the flow is directed from the less viscous fluid into the more viscous fluid, the motion of the interface is ill-posed; small deviations in the initial condition will produce significant changes in the ensuing motion. This situation is disastrous for numerical computation, as small round-off errors can quickly lead to large inaccuracies in the computed solution. Our method of computation is most easily formulated using a conformal map from the fluid domain into a unit disk. The method relies on analytically continuing the initial data and equations of motion into the region exterior to the disk, where the evolution problem becomes well-posed. The equations are then numerically solved in the extended domain. The presence of singularities in the conformal map outside of the disk introduces specific structures along the fluid interface. Our method can explicitly track the location of isolated pole and branch point singularities, allowing us to draw connections between the development of interfacial patterns and the motion of singularities as they approach the unit disk. In particular, we are able to relate physical features such as finger shape, side-branch formation, and competition between fingers to the nature and location of the singularities. The usefulness of this method in studying the formation of topological singularities (self-intersections of the interface) is also pointed out.

  14. JUVENILE SOCIAL ASSOCIATION OF SOUTHERN SEA LION, OTARIA FLAVESCENS (SHAW, 1800 IN REHABILITATION IN COAST OF LIMA, PERU

    Directory of Open Access Journals (Sweden)

    Davis Cortegana-Arias

    2012-12-01

    Full Text Available Group living and social association are activities that can bring benefits and detriments depending on the species. These costs are balanced in highly social species, such as otariids, which choose to live in groups to benefit from social learning and reproductive success. Sea lion rehabilitation can provide an opportunity to watch these animals in a controlled environment and analyze what leads to this association and encourage it. Two South American sea lions [Otaria flavescens (Shaw, 1800] of one and two years of age were selected from the ORCA (Organization for Research and Conservation of Aquatic Animals rehabilitation base, and were tested to determine the conditions of the association and to eliminate human influence bias in their behavior. Twenty five behaviors were recorded through ethograms in 127 h of interaction. Also, during the human influence tests three cooperation behaviors were observed. Additionally, the interaction between individuals was agonistic, and outside of human interaction they always were at maximum distance. Finally, we note that since individuals only cooperated under influence of the human influence tests, it may be that they understand long term cooperation as in primates.

  15. Cross-diffusion-driven gravitational instability in a Hele-Shaw cell saturated with a ternary solution

    Science.gov (United States)

    Kim, Min Chan; Song, Kwang Ho

    2016-08-01

    The effect of cross diffusion on the onset of the gravitational instabilities in a Hele-Shaw cell saturated with a ternary solution is analyzed. Based on the linear stability theory, new stability equations are derived in the global domain and then transformed into the similar domain. These stability equations are solved by employing various methods such as an initial value problem approach and quasi-steady state approximations (QSSA's). Through the initial growth rate analysis without the QSSA, we prove that initially the system is unconditionally stable. However, the QSSA in the global domain showed that the system can be initially unstable for a certain condition. Based on the QSSA in the similar domain (QSSAζ), we obtain the critical time for the onset of instability motion. As expected, the higher |" separators=" δ 21 β | makes the system more unstable, i.e., accelerates the onset of instability motion; here δ21 and β represent the normalized cross diffusion coefficient and the ratio of densification coefficients, respectively. Based on the linear analysis, fully nonlinear analyses are also conducted by using the Fourier spectral method. The present nonlinear analyses show that the double-diffusive and diffusive-layer convection-type of instabilities are possible for the positive and negative δ21β-values, respectively. From the present nonlinear analysis, the system having δ22 > 1 prefers the instabilities with a larger wavelength than the system having δ22 < 1. Here δ22 is the normalized normal diffusion coefficient of component B.

  16. Occurrence of Photobacterium leiognathi, as the bait organ symbiont in frogfish Antennarius hispidus

    Digital Repository Service at National Institute of Oceanography (India)

    Ramaiah, N.; Chandramohan, D.

    . Occurrence of P. leiognathi as the bait organ symbiont of A. hispidus is the first report. Being very strong mimics of their surrounding, frogfishes may couple the bacterial bioluminescence originating from their bait organs with that of their camouflaging...

  17. Environmental factors influencing the distribution of Arvicola scherman (Shaw, 1801 at the southwestern edge of its distribution

    Directory of Open Access Journals (Sweden)

    Romero-Suances, R.

    2015-01-01

    Full Text Available En 2008 se detectó la existencia de daños en pastizales de la montaña oriental de la provincia de Lugo (NW Spain, probablemente ligados un aumento de las poblaciones de Arvicola scherman (Shaw, 1801. Existe muy poca información sobre esta especie en la zona. Por esa razón se realizó este estudio, cuyos objetivos principales son: i conocer la distribución geográfica de la especie, ii identificar las variables ambientales que la pueden determinar, iii comprobar la existencia fluctuaciones demográficas interanuales y iv elaborar un mapa de riesgos de que se produzcan explosiones demográficas. Se realizaron recorridos por 280 pastizales en los que la existencia de túmulos característicos de la especie se utilizó para verificar su presencia y calcular un índice de abundancia. Mediante el programa MAXENT se elaboró un mapa de distribución potencial utilizando las variables: evapotranspiración potencial, balance hídrico, altitud y valores medios anuales de temperatura y precipitación. La especie se encontró únicamente en las montañas orientales por encima de los 700 m de altitud. Altitud y balance hídrico fueron las variables que mejor predijeron la presencia de la especie. Además se constató una diferencia significativa en la abundancia relativa entre 2008 y 2010, lo que sugiere que la especie puede experimentar fuertes fluctuaciones demográficas. Probablemente el aumento de la superficie dedicada a pastizales de los últimos 40 años favorezca la expansión y abundancia de la especie en la zona.

  18. Analytic theory of the selection mechanism in the Saffman-Taylor problem. [concerning shape of fingers in Hele-Shaw cell

    Science.gov (United States)

    Hong, D. C.; Langer, J. S.

    1986-01-01

    An analytic approach to the problem of predicting the widths of fingers in a Hele-Shaw cell is presented. The analysis is based on the WKB technique developed recently for dealing with the effects of surface tension in the problem of dendritic solidification. It is found that the relation between the dimensionless width lambda and the dimensionless group of parameters containing the surface tension, nu, has the form lambda - 1/2 = nu exp 2/3 in the limit of small nu.

  19. Analytic theory for the determination of velocity and stability of bubbles in a Hele-Shaw cell. I - Velocity selection. II - Stability

    Science.gov (United States)

    Tanveer, S.

    1989-01-01

    An asymptotic theory is presented for the determination of velocity and linear stability of a steady symmetric bubble in a Hele-Shaw cell for small surface tension. First the bubble velocity relative to the fluid velocity at infinity is determined for small surface tension by means of a transcendentally small correction to the asymptotic series solution. In addition, a linear stability analysis shows that only the solution branch corresponding to the largest possible bubble velocity for given surface tension is stable, while all the others are unstable.

  20. Modeling leakage pathways in subsurface formations. Fluid drainage through multiple fractures in porous media: Insights from Hele Shaw cell experiments

    Science.gov (United States)

    Ray, Sujata

    2017-04-01

    Arresting the recent observed warming of the earth's climate is a challenge requiring the reduction of anthropogenic emissions of carbon dioxide. One option for reducing emissions into the atmosphere is to capture and sequester the released carbon dioxide in geological formations. However, potential geological storage first requires a risk assessment of carbon dioxide escaping to overlying layers and back to the atmosphere through leakage pathways in the formation. This, in turn, requires an understanding of fluid flow through the leakage pathways. In this study, the effect of leakage pathways on the flow of a gravity current was investigated, using an analogue system, a Hele-Shaw cell. Fluid was introduced through the top edge of the cell and flowed out through one or more holes in its impermeable base. The height of the accumulated fluid above the base of the cell at various points along its length and the outflow rate of fluid through the holes was measured. This measurement was conducted with varying conditions of the location, number and strength of source as well as the location and number of holes. At steady state, the fluid motion was in accordance with Darcy's law for horizontal flow in a long thin current. In another set of experiments, in which inflow was stopped and the fluid was allowed to drain out of a single open hole, the outflow rate was in accordance with Darcy's law for one-dimensional flow in the vertical direction until the fluid height above the hole fell below a certain limit. This threshold height was found to be 1.3 cm, which was similar in magnitude to the length of the hole. A time series of photographs tracked the flow of colored dye. The photographs demonstrated that at steady state the fluid traveled for some distance beyond the hole before draining through it. This implies that contaminants may be transported in a formation even beyond an outlet before finally draining out through it. The photographs also documented the shape of the

  1. OCORRÊNCIA DE OOCISTOS DE Cryptosporidium spp. EM RÃs-TOURO (Lithobates catesbeianus SHAW, 1802, NO MUNICÍPIO DE UBERLÂNDIA, MG, BRASIL

    Directory of Open Access Journals (Sweden)

    Aline Diniz Cabral

    2011-03-01

    Full Text Available The objective of the present study was to detect the occurrence of Cryptosporidium spp. oocysts in intestinal mucosa scraping and feces samples from bullfrogs (Lithobates catesbeianus Shaw, 1802 confined at the school farm of Federal University of Uberlândia, MG, Brazil. The modified Ziehl Neelsen staining technique was used. Out of 28 fecal samples, 14.28% (4/28 were positive for Cryptosporidium spp., with 7.14% positive samples in feces of frogs under 3 months of age and 7.14% in feces of frogs over 3 months of age. Form the 16 intestinal scraping samples, 75% (10/16 were positive, 50% in tadpoles and 25% in adult frogs. This research allows the situation identification and the recommendation of measures to control this parasite, aiming at preventing or delaying the appearance of this parasitism in other animals, since it an important zoonosis to public health.

  2. Flow of Power-Law Liquids in a Hele-Shaw Cell Driven by Non-Uniform Electroosmotic Slip in the Case of Strong Depletion

    Science.gov (United States)

    Boyko, Evgeniy; Bercovici, Moran; Gat, Amir

    2016-11-01

    We analyze flow of a non-Newtonian fluid in a Hele-Shaw cell, subjected to spatially non-uniform electroosmotic flow. We specifically focus on power-law fluids with wall depletion properties and derive a p-Poisson equation governing the pressure field, as well as a set of linearized equations representing its asymptotic approximation for weakly non-Newtonian behavior. To investigate the effect of non-Newtonian properties on the resulting fluidic pressure and velocity, we consider several configurations in one and two dimensions, and calculate both exact and approximate solutions. We show that the asymptotic approximation is in good agreement with exact solutions even for fluids with significant non-Newtonian behavior. The asymptotic model thus enables prediction of the flow and pressure fields for non-Newtonian fluids, and may be particularly useful for the analysis and design of microfluidic systems involving electro-kinetic transport of such fluids.

  3. Flow of Power-Law Liquids in a Hele-Shaw Cell Driven by Non-Uniform Electroosmotic Slip in the Case of Strong Depletion

    CERN Document Server

    Boyko, Evgeniy; Gat, Amir D

    2016-01-01

    We analyze flow of non-Newtonian fluids in a Hele-Shaw cell, subjected to spatially non-uniform electroosmotic slip. Motivated by their potential use for increasing the characteristic pressure fields, we specifically focus on power-law fluids with wall depletion properties. We derive a p-Poisson equation governing the pressure field, as well as a set of linearized equations representing its asymptotic approximation for weakly non-Newtonian behavior. To investigate the effect of non-Newtonian properties on the resulting fluidic pressure and velocity, we consider several configurations in one- and two-dimensions, and calculate both exact and approximate solutions. We show that the asymptotic approximation is in good agreement with exact solutions even for fluids with significant non-Newtonian behavior, allowing its use in the analysis and design of microfluidic systems involving electro-kinetic transport of such fluids.

  4. 条沙叶蝉触角形态及其感器类型%Morphological characters of antennae and types of antennal sensilla of the vector leafhopper Psammotettix striatus (L.)(Hemiptera,Deltocephalinae)

    Institute of Scientific and Technical Information of China (English)

    张方梅; 黄忠宝; 赵立嵌; 戴武

    2011-01-01

    【目的】观察比较条沙叶蝉(Psammotettix striatus)成若虫、雌雄两性的触角及其感器的形态、数量和分布,为条沙叶蝉的行为生物学、化学生态学和电生理学的研究提供参考。【方法】应用电镜扫描技术,系统观察条沙叶蝉的触角及其感器的类型、数量和分布。【结果】条沙叶蝉成虫两性间无差异,触角呈刚毛状,包括柄节、梗节和鞭节3部分,柄节及梗节较粗短,其上具众多耳状突起,梗节近端部着生有3~5根毛形感器;鞭节细长,分为多亚节,第1、2、4亚节上各有1个锥形感器,第3亚节上着生1毛形感器,其余亚节上均无感器存在。【结论】条沙叶蝉的触角感器类型及数量在雌雄个体间无差异,若虫触角上感器的分布、数量及种类与成虫一致。%【Objective】 Antennal sensilla types,number and distribution of the Psammotettix striatus(L.)(Hemiptera:Cicadellidae) were studied,to understand behavioral biology,chemical ecology and electrophysiology of P.striatus.【Method】 The study was done by scanning electron microscope.【Result】 Antenna consists of basal scape,pedicel and long flagellum.Numerous wrinkle and cuticular denticles are distributed on the short scape and pedicel,and 3-5 sensilla trichodea on the apex of pedicel.Slender flagellum is composed of many segments.Three sensilla basiconic are distributed on the 1st,2nd and 4th segment of flagellum respectively,one sensilla trichodea on the 3rd segment.【Conclusion】 Types and number of male sensilla are similar to those of female.There is no difference between adults and nymphs in the distribution,number and types of antennal sensillum.

  5. Analytic theory for the determination of velocity and stability of bubbles in a Hele-Shaw cell. Part 1: Velocity selection

    Science.gov (United States)

    Tanveer, Saleh

    1989-01-01

    An asymptotic theory is presented for the determination of velocity and linear stability of a steady symmetric bubble in a Hele-Shaw cell for small surface tension. In the first part, the bubble velocity U relative to the fluid velocity at infinity is determined for small surface tension T by determining transcendentally small correction to the asymptotic series solution. It is found that for any relative bubble velocity U in the interval (U(c),2), solutions exist at a countably infinite set of values of T (which has zero as its limit point) corresponding to the different branches of bubble solutions. U(c) decreases monotonically from 2 to 1 as the bubble area increases from 0 to infinity. However, for a bubble of arbitrarily given size, as T approaches 0, solution exists on any given branch with relative bubble velocity U satisfying the relation 2-U = cT to the 2/3 power, where c depends on the branch but is independent of the bubble area. The analytical evidence further suggests that there are no solutions for U greater than 2. These results are in agreement with earlier analytical results for a finger. In Part 2, an analytic theory is presented for the determination of the linear stability of the bubble in the limit of zero surface tension. Only the solution branch corresponding to the largest possible U for given surface tension is found to be stable, while all the others are unstable, in accordance with earlier numerical results.

  6. Nursing Professional Environment in Sir Run Run Shaw Hospital%医院护理工作环境建设实践

    Institute of Scientific and Technical Information of China (English)

    叶志弘

    2013-01-01

    为稳定护理队伍,促进优质护理服务的可持续发展,邵逸夫医院护理部从护理愿景的设立、护理专业实践和文化建设层面进行健康护理工作环境构建的探索,并取得了一定成效.本文将简要介绍我院护理工作环境的建设,为国内医院优化护理工作环境提供参考.%In order to stabilize the nursing team and promote the sustainable development of excellence nursing service, the department of nursing in Sir Run Run Shaw Hospital is exploring a healthy work environment from professional practice and culture construction which has achieved certain results. This article briefly introduced the construction of nursing work environment in our hospital to provide a reference of optimizing nursing work environment.

  7. Rational, Justly, irony:Zhang Ailing and George Bernard Shaw%理性•平明•反讽:张爱玲与萧伯纳

    Institute of Scientific and Technical Information of China (English)

    陈娟

    2014-01-01

    作为张爱玲喜爱的一个作家,萧伯纳无疑对张爱玲创作具有一定的影响。但就目前研究现状来看,学界对此尚未专门研究。张爱玲欣赏和喜爱萧伯纳戏剧中理性的智慧、平明的态度与反讽的艺术,但她并不是机械照搬,无论在理性之思、平明态度,还是反讽艺术,都渗入了个人的体验感悟,并以敏慧的艺术感受进行创造性转化。%As Zhang Ailing's favorite writer, Bernard Shaw undoubtedly has certain influence on Zhang’s creation. But according to the current researches review, this remains a research blank. Zhang admires and adorns the rational wisdom, the justly attitude and the irony art in Shaw’s plays, but she infiltrates her personal experience and feelings about art, and creatively borrow Shaw’s writing style instead of mechanical copying.

  8. The axon-dendrite targeting of Kv3 (Shaw) channels is determined by a targeting motif that associates with the T1 domain and ankyrin G.

    Science.gov (United States)

    Xu, Mingxuan; Cao, Ruifeng; Xiao, Rui; Zhu, Michael X; Gu, Chen

    2007-12-19

    Kv3 (Shaw) channels regulate rapid spiking, transmitter release and dendritic integration of many central neurons. Crucial to functional diversity are the complex targeting patterns of channel proteins. However, the targeting mechanisms are not known. Here we report that the axon-dendrite targeting of Kv3.1 is controlled by a conditional interaction of a C-terminal axonal targeting motif (ATM) with the N-terminal T1 domain and adaptor protein ankyrin G. In cultured hippocampal neurons, although the two splice variants of Kv3.1, Kv3.1a and Kv3.1b, are differentially targeted to the somatodendritic and axonal membrane, respectively, the lysine-rich ATM is surprisingly common for both splice variants. The ATM not only directly binds to the T1 domain in a Zn2+-dependent manner, but also associates with the ankyrin-repeat domain of ankyrin G. However, the full-length channel proteins of Kv3.1b display stronger association to ankyrin G than those of Kv3.1a, suggesting that the unique splice domain at Kv3.1b C terminus influences ATM binding to T1 and ankyrin G. Because ankyrin G mainly resides at the axon initial segment, we propose that it may function as a barrier for axon-dendrite targeting of Kv3.1 channels. In support of this idea, disrupting ankyrin G function either by over-expressing a dominant-negative mutant or by siRNA knockdown decreases polarized axon-dendrite targeting of both Kv3.1a and Kv3.1b. We conclude that the conditional ATM masked by the T1 domain in Kv3.1a is exposed by the splice domain in Kv3.1b, and is subsequently recognized by ankyrin G to target Kv3.1b into the axon.

  9. Meal from tilapia filleting industrial waste in the feed of the bullfrog tadpoles (Rana Catesbeiana Shaw, 1802/ Inclusão de farinha de resíduos da indústria de filetagem de tilápias na alimentação de girinos de rã-touro (Rana Catesbeiana Shaw,1802

    Directory of Open Access Journals (Sweden)

    Cleiton Manske

    2007-08-01

    Full Text Available The objective of this experiment was to evaluate the inclusion of meal of tilapia industrial waster in bullfrog tadpoles’ diets (Rana Catesbeina Shaw, 1802. Two hundred fifty tadpoles with initial weight and length of 0,18 ± 0,05g and 2,50 ± 0,18 centimeters were used, respectively, they were used and distributed in 25 aquariums of 30 liter each in a complete randomized design with five treatments and five repetitions. The tadpoles were fed four times a day with diets containing 0, 5, 10 and 15% of inclusion of tilapia filleting and another diet with 0% of supplemented tilapia filleting with synthetic methionine, being supplied four times a day at ease. The experiment period was 30 days. The diets with tilapia filleting inclusion and methionine supplementation did not have influence in the final weight and length averages, feed survival and conversion of bullfrog tadpoles. It cam be used until 15% of tilapia filleting inclusion in the bullfrog tadpoles food. The synthetic methionine supplementation in diets for bullfrog tadpoles is not necessary in diets with levels over 0,47% of the total methionine.Este experimento objetivou avaliar a inclusão da farinha de resíduos de filetagem de tilápias (FT em rações para girinos de rã-touro (Rana Catesbeina Shaw,1802. Foram utilizados 250 girinos com peso e comprimento inicial de 0,18 ± 0,05g e 2,50 ± 0,18 cm, respectivamente, distribuídos em 25 aquários de 30 L cada, em um delineamento inteiramente casualizado com cinco tratamentos e cinco repetições. Os girinos foram alimentados quatro vezes ao dia, com rações contendo 0, 5, 10, 15% de inclusão de FT e outra ração com 0% de FT suplementada com metionina sintética, sendo fornecidas quatro vezes ao dia a vontade. O período do experimento foi de 30 dias. As rações com inclusão de FT e suplementação de metionina não influenciaram nas médias de peso final, comprimento final, sobrevivência e conversão alimentar dos girinos de r

  10. Diseño y desarrollo de una experiencia que evidencie el fenómeno de la celda Hele-Shaw por medio de fluidos de viscosidades y colores diferentes, para la sala Física Viva del Parque Explora

    OpenAIRE

    González Múnera, Roxana; Lineros Candamil, Andrea

    2008-01-01

    A lo largo de este trabajo se diseño y desarrollo una experiencia interactiva que muestra la teoría de los fractales utilizando como base formas que resultaban de la repetición de lo micro a lo macro y también la teoría de la celda Hele-Shaw. El primer concepto se evidencia en el aspecto formal de la experiencia y el segundo en su funcionamiento.

  11. Description of Eimeria motelo sp. n. (Apicomplexa: Eimeriidae from the yellow footed tortoise, Geochelone denticulata (Chelonia: Testudinidae, and replacement of Eimeria carinii Lainson, Costa & Shaw, 1990 by Eimeria lainsoni nom. nov.

    Directory of Open Access Journals (Sweden)

    Lada Hurková

    2000-12-01

    Full Text Available Eimeria motelo sp. n. is described from faeces of the yellow-footed tortoise, Geochelone denticulata (L.. Oocysts are irregularly ellipsoidal or cylindrical, with slightly expressed lobed protrusions and irregularities at the poles, possibly caused by wrinkling of the oocyst wall, 17 (15-19 × 9.4 (8.5-11 µm, shape index (length/width being 1.81 (1.45-2. The oocyst wall is smooth, single-layered, 0.5 µm thick with no micropyle. There are no polar bodies. Sporocysts are ellipsoidal, 8.9 (7.5-10 × 4.4 (4-5 µm, shape index 2.03 (1.7-2.5. A sporocyst residuum is present, composed of many granules of irregular size. The sporozoites are elongate, lying lengthwise in the sporocysts. Comparison with other species of the genus Eimeria parasitising members of family Testudinidae indicates that the presently described coccidium represents a new species. The name of Eimeria carinii Lainson, Costa & Shaw, 1990 is found to be preoccupied by a homonym, Eimeria carinii Pinto 1928 given to a coccidium from Rattus norvegicus. Therefore, it is replaced by Eimeria lainsoni nom. nov.

  12. Insight into the modulation of Shaw2 Kv channels by general anesthetics: structural and functional studies of S4-S5 linker and S6 C-terminal peptides in micelles by NMR.

    Science.gov (United States)

    Zhang, Jin; Qu, Xiaoguang; Covarrubias, Manuel; Germann, Markus W

    2013-02-01

    The modulation of the Drosophila Shaw2 Kv channel by 1-alkanols and inhaled anesthetics is correlated with the involvement of the S4-S5 linker and C-terminus of S6, and consistent with stabilization of the channel's closed state. Structural analysis of peptides from S4-S5 (L45) and S6 (S6c), by nuclear magnetic resonance and circular dichroism spectroscopy supports that an α-helical conformation was adopted by L45, while S6c was only in an unstable/dynamic partially folded α-helix in dodecylphosphocholine micelles. Solvent accessibility and paramagnetic probing of L45 revealed that L45 lies parallel to the surface of micelles with charged and polar residues pointing towards the solution while hydrophobic residues are buried inside the micelles. Chemical shift perturbation introduced by 1-butanol on residues Gln320, Thr321, Phe322 and Arg323 of L45, as well as Thr423 and Gln424 of S6c indicates possible anesthetic binding sites on these two important components in the channel activation apparatus. Diffusion measurements confirmed the association of L45, S6c and 1-butanol with micelles which suggests the capability of 1-butanol to influence a possible interaction of L45 and S6c in the micelle environment.

  13. Literature Features of Bernard Shaw's Political Dramas in His Later years%萧伯纳后期政治剧现实性与现代性的融合

    Institute of Scientific and Technical Information of China (English)

    杜鹃

    2012-01-01

    国内学界长期聚焦萧伯纳的早期社会问题剧,对其后期带有大量现代主义元素的政治剧鲜有问津。萧伯纳的"政治狂想剧"《苹果车》、《真相毕露》、《日内瓦》和"政治喜剧"《触礁》,结构精妙、写法独特、富于讽刺性。作者采用象征、荒诞等现代戏剧表现手段,揭示二十世纪二、三十年代西方社会的矛盾和危机,通过舞台道具、声音的精心设计使作品产生间离效果,呈现出现实性与现代性巧妙融合的艺术品格。%Chinese scholars have long been concentrating on Bernard Shaw's dramas about social problems,and kept his political dramas in the shade.His "political fantasy dramas",such as Apple Cart,Too True to be Good and Geneva,as well as "political comedy" On the Rocks,are renowned for their deliberate structures,distinguished writing skills and sarcasm.By employing methods like symbolism and absurdness,he reveals the contradictions and crises confronting the western society in the 1920s and 1930s.Meanwhile,defamiliarization effects are achieved by deliberate designing of stage props and voices,which integrates reality and modernization into the artistry.

  14. Lichen striatus med negledystrofi er en selvlimiterende tilstand

    DEFF Research Database (Denmark)

    Sandreva, Tatjana; Bygum, Anette

    2012-01-01

    A six year-old boy was referred with an asymptomatic linear rash on his left arm and a nail involvement of a fingernail on his left hand. Multiple small erythematous papules coalescing into a linear band extending to the thumb with nail abnormality were noted on the left arm. A diagnosis of lichen...

  15. A MONOGRAPH OF CARYODAPHNOPSIS A. SHAW

    Directory of Open Access Journals (Sweden)

    a. j. g. h. kostermans

    1974-12-01

    Full Text Available Of the genus Caryodapknopaia 7 species are known, of which twoare described here for the first time. The genus occurs from Yunnanto Indochina, with the exception of C. tonkinensis, which goes as far asthe Philippines and Borneo. Apparently most species are distributed bywater and C.tonkinensis is assumed to have spread from the mainlandto Borneo during the glacial period, when a land connection existed.The genus is related to Nothaphoebe and Alseodaphne and hencebelongs to Perseae.

  16. The Redemption Hope and Persistence of Life on Shaw shank

    Institute of Scientific and Technical Information of China (English)

    罗莎莎

    2015-01-01

    The film was about the caring and smart banker Andy Dufresne,who is falsely accused and convicted of the murder of his wife and her lover.He is sent to Shawshank prison in 1940,he met many fellow prisoners,including Red,a fellow inmate serving a life sentence,who has recently failed to gain parole became his important friend later.During his time at Shawshank Andy’s way of life is changed,he helped the head of the prison do the illegal things in order to gain some freedom,he rebuilt the library and helped the other prisoners,they all liked him,for he helped them find hope again,he was the model of dignity among them,also he never lost his hope.

  17. The Redemption Hope and Persistence of Life on Shaw shank

    Institute of Scientific and Technical Information of China (English)

    罗莎莎

    2015-01-01

    The film was about the caring and smart banker Andy Dufresne,who is falsely accused and convicted of the murder of his wife and her lover.He is sent to Shawshank prison in 1940,he met many fellow prisoners,including Red,a fellow inmate serving a life sentence,who has recently failed to gain parole became his important friend later.During his time at Shawshank Andy's way of life is changed,he helped the head of the prison do the illegal things in order to gain some freedom,he rebuilt the library and helped the other prisoners,they all liked him,for he helped them find hope again,he was the model of dignity among them,also he never lost his hope.

  18. Shaw Air Force Base Infrastructure Project Environmental Assessment

    Science.gov (United States)

    2008-09-01

    various sunfish, bullhead catfish , and largemouth bass and birds such as resident Canada geese, mallards, and kingfishers (Air Force, 2004a...Reptiles Micrurus fulvius Eastern coral snake ─ SC Hardwood forest; pine flatwoods; marshes Mammals Corynorhinus rafinesquii Rafinesque’s big-eared

  19. Shaw Air Force Base Capital Improvement Program Environmental Assessment

    Science.gov (United States)

    2010-05-01

    condensate Piedmont three-awned grass ─ SC Sandridges Carex decomposita Cypress-knee sedge ─ SC Swamps and lake margins on floating logs Carya...Cypress-knee Sedge G3 Corya myrlstlciformis Nutmeg Hickory G4 Chomaedophne colyculato leatherleaf GS Cyperus Ieconte/ Leccnte Flatsedge G4

  20. Consumer Evaluation of Cash Food Systems: Shaw Air Force Base

    Science.gov (United States)

    1974-12-01

    X Clean/Dirty Silverware • X Clean/Dirty Trays » • Clean/Dirty Dishes and Glasses # * X Clean/Dirty Floors • » X Clean/Dirty Tables and Chairs...Dirty dishes and glasses i. Dirty floors a CD CD CD CD Clean floors 1- Dirty tables and chairs CD CD CD CD a Clean tables and chairs k. Brightly...to have an IN EXPENSIVE NOON or EVENING MEAL. Would you prefer a cafeteria, selfservice system or a waitress -service system? > > > li > 1i :i5 iV 15

  1. Jim Shaw's The Hidden World as a Book of Poetry

    DEFF Research Database (Denmark)

    Sørensen, Bent

    documents, ’found’ in pulp publications, in thrift stores, on billboards, and on the Internet. These documents are mostly word-image hybrids, and their original functions may have been as commercials or advertisements, religious propaganda, doomsday prophecies, or other forms of naïve “didactic art...... a book of poetry. Drawing on genre theory, as well as recent work by, among others, Martin Glaz Serup and Thomas Hvid Kromann, I propose to read The Hidden World against its own grain, as it were, as a collection of conceptual poetry, participating in the discourses of belief and testimony....

  2. TOPOGRAPHY AND VISCERAL MORPHOLOGY OF THE Melopsittacus undulatus, SHAW 1805 TOPOGRAFIA E MORFOLOGIA DAS VÍSCERAS DO PERIQUITO-AUSTRALIANO (Melopsittacus undulatus, SHAW 1805

    Directory of Open Access Journals (Sweden)

    Fabiana S. Matsumoto

    2009-12-01

    Full Text Available

    The aim of this research was to study the topography and morphology of Australian parakeet (Melopsittacus undulatus viscera. Ten Australian parakeet were used (5 males and 5 females. The animals were fixed in 10% formaldehyde solution, through perfusion in the musculature and visceral cavity. Macroscopically, the Australian parakeet viscera did not show expressive differences when compared to other domestic birds’ species. Microscopically, the main difference was the presence of mechanoreceptors (Corpuscles of Pacini in the tongue, found for the first time in this psittaciform  species.

    KEY WORDS: Melopsittacus undulatus, morphology, topography, viscera.

    Em virtude da escassez de dados referentes à morfologia e topografia das aves em geral, o presente estudo teve como objetivo descrever a topografia e morfologia das vísceras do periquito-australiano (Melopsittacus undulatus, para assim proporcionar um conhecimento mais amplo sobre características específicas dessa espécie. Para a descrição da morfologia e topografia das vísceras foram utilizados dez periquitos, sendo cinco machos e cinco fêmeas. Os animais foram fixados com solução de formaldeído 10%, através de perfusão na musculatura e cavidade visceral. Macroscopicamente, as vísceras do periquito não apresentaram muitas diferenças comparadas a outras espécies de aves domésticas. Microscopicamente, a principal diferença estava na presença de mecanorreceptores (corpúsculos de Pacini na língua, encontrados pela primeira vez nesta espécie de psitaciforme. 

    PALAVRAS-CHAVES: Melopsittacus undulatus, morfologia, topografia, vísceras.

  3. Effect of different cooking methods on proximate and mineral composition of striped snakehead fish (Channa striatus, Bloch).

    Science.gov (United States)

    Marimuthu, K; Thilaga, M; Kathiresan, S; Xavier, R; Mas, R H M H

    2012-06-01

    The effects of different cooking methods (boiling, baking, frying and grilling) on proximate and mineral composition of snakehead fish were investigated. The mean content of moisture, protein, fat and ash of raw fish was found to be 77.2 ± 2.39, 13.9 ± 2.89, 5.9 ± 0.45 and 0.77 ± 0.12% respectively. The changes in the amount of protein and fat were found to be significantly higher in frying and grilling fish. The ash content increased significantly whereas that of the minerals (Na, K, Ca, Mg, Fe, Zn and Mn) was not affected in all cooking methods. Increased in Cu contents and decreased in P contents were observed in all cooking methods except grilling. In the present study, the grilling method of cooking is found to be the best for healthy eating.

  4. Concentrations of environmental contaminants in blood samples collected from Sharp-shinned hawks (Accipiter striatus) from the Eastern Flyway

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Table 1 provides the results of organochlorine and mercury analysis on plasma and whole blood samples (respectively) collected from 20 sharp-shinned hawks at HMS...

  5. Nutrient Content And Acceptability Of Snakehead-Fish (Ophiocephalus Striatus) And Pumpkin (Cucurbita Moschata) Based Complementary Foods

    Science.gov (United States)

    Ratna Noer, Etika; Candra, Aryu; Panunggal, Binar

    2017-02-01

    Poor nutrient-dense complementary foods is one of the common factors contributed for decline growth pattern in children. Snakehead-fish and Pumpkin Complementary Feeding (SPCF) base on locally food can help to reduce child malnutrition. Specifically, high protein and vitamin A in SPCF may improve immunity and nutrition status of malnutrition children. This study aimed to formulate low-cost, nutritive value and acceptable of SPCF on malnutrition children in coastal area. Carbohydrate content was determined by difference, protein by Kjeldahl, betacaroten by spectofotometri and sensory evaluation using a five point hedonic scale. Fe and zinc was determined by AAS. There is an effect of the substitution of snake-head fish flour and yellow pumpkin flour toward the nutrient content and the acceptability

  6. Environmental Impact Statement (EIS) for the Airspace Training Initiative Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2011-12-09

    Pi -eservation Office fails to respond to ~Agency official finding of no adverse effect ~ithin the 30:.cl.ay review period, then the agency official...by a thin strip of willows (Salix spp.) and raspberry bramble (Rubus spp.). Birds observed in or around Turkey Pond were double-crested cormorant

  7. Two new cembranoids from the leaves of Croton longissimus Airy Shaw.

    Science.gov (United States)

    Kawakami, Susumu; Matsunami, Katsuyoshi; Otsuka, Hideaki; Lhieochaiphant, Duangporn; Lhieochaiphant, Sorasak

    2013-04-01

    Two new cembrane-type diterpenoids (1 and 2) along with five known compounds (3-7) were isolated from leaves of Croton longissimus collected in Thailand. Their structures were elucidated from spectroscopic evidence and compound 4 was found by HPLC analysis to be identical to oblongionoside B-a compound isolated from Croton oblongifolius-including the absolute configuration at the C-9 position.

  8. Nightmare on Shaw Street: Getting Lost in Shorty’s Private Collection

    Directory of Open Access Journals (Sweden)

    Emily Bullock

    2012-12-01

    Full Text Available This article discusses the semiotic and affective affordances of a regional museum on the west coast of Australia’s only island state, Tasmania. Shorty’s Private Collection is a small museum displaying items collected from around the region, with a focus on resuscitated mining materials. The owner also creates figures derived from popular culture from these items. The article uses the methodology of creative non-fiction in order to situate the museum within the marginal community that it engages with, and discusses the museum in terms of Bakhtin’s theory of the grotesque and its potential to both establish and challenge dominant conceptions of the local and the limits of semiotic representation.

  9. Environmental Assessment: Construct New AAFES Shopping Center Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2008-10-01

    Wildlife expected in these open water habitats includes stocked fish such as various sunfish, bullhead catfish , largemouth bass and birds such as...arrow-head West Indian meadow-beauty Wild petunia Amphibians Northern cricket frog Reptiles Eastern coral snake Mammals Rafinesque’s big-eared

  10. Inverse Saffman-Taylor instability in Hele-Shaw experiments using micro-particles

    Science.gov (United States)

    Zoueshtiagh, Farzam; Bihi, Ilyesse; Butler, Jason; Faille, Christine; Baudoin, Michaël

    2016-11-01

    Saffman-Taylor instability can occur when a low viscosity fluid displaces one of higher viscosity. It results from the decrease of the flow resistance as the fluid of lower viscosity replaces the more viscous one. This Saffman-Taylor instability is revisited experimentally for the inverse case of a viscous fluid displacing air when partially wetting particles are lying on the walls. Though the inverse case is otherwise stable, the presence of the particles results in a fingering instability at low capillary number. This capillary-driven instability is driven by the integration of particles into the interface which results from the minimization of the interfacial energy. We acknowledge the support from the Marie Curie International Research Staff Exchange Scheme Fellowship ("Patterns and Surfaces" No. 269207) within the 7th European Community Framework Programme.

  11. Action Films Presented by Shaw Brothers%邵氏动作片初探

    Institute of Scientific and Technical Information of China (English)

    张燕

    2006-01-01

    邵氏公司是唯一一个见证了香港电影整个发展脉络的电影机构,其中邵氏兄弟公司是最为辉煌的一段.动作片是邵氏兄弟电影中最值得关注的类型.20世纪60年代中期在天时、地利、人和的条件下,"邵氏兄弟"以新武侠片为起点开创了动作片的奇迹.其后近20年,动作美学观念不断流变,在新武侠片的类型基础上又巧妙延伸出拳脚功夫片、文艺武侠片等亚类型.七八十年代在嘉禾公司蓬勃崛起和新艺城等公司冒起突进的背景下,邵氏公司遭遇空前的冲击和挑战,动作片创作也日趋困境,并最终在1 985年后消亡.而动作片的式微,则是整个邵氏电影王国走向没落的缩影.

  12. Microscopic morphology and testis morphometry of captivity-bred Adult bullfrogs (Lithobates catesbeianus Shaw, 1802

    Directory of Open Access Journals (Sweden)

    Jaqueline Carlos

    2009-12-01

    Full Text Available The aim of this work was to study the testicular morphometry of captivity-bred adult bullfrogs. Fifteen young adult male were studied, in the rainy season and a lengthy photoperiod. The GSI was established at 0.15%. The nuclear diameter of germinative and Leydig cells, the nucleolus diameter of Sertoli cells and the area of cysts and tubules were determined and the mean number of ISPC, IISPC and SPT per cyst and the mean number of cysts per tubule was estimated. The nucleoplasmatic proportion of the nucleus of the Leydig cell was 76.22%, indicating less cytoplasmic activity. Eight generations of spermatogonia were found. The spermatogenesis efficiency in meiosis and in mitosis was 63 and 49%, respectively. The spermatogenesis of bullfrog fited in the pattern of other captivity Anurans, with differences as the morphology of Sertoli and Leydig cells nuclei.A morfometria é uma importante ferramenta para a biologia estrutural, permitindo estudos estereológicos e análises quantitativas. Existem muitos pontos a serem esclarecidos sobre a morfometria testicular desta espécie, que objetivamos desvendar neste trabalho. Quinze machos adultos foram estudados, em período chuvoso e de fotoperíodo longo (dezembro, 2000. O IGS encontrado foi de 0.15%. O diâmetro nuclear das células germinativas e da célula de Leydig, o diâmetro nucleolar das células de Sertoli e a área dos cistos e túbulos foram determinados. O número médio de ISPC, IISPC e SPT por cisto e o número médio de cisto por túbulo foi estimado. A proporção nucleoplasmática do núcleo da célula de Leydig foi de 76.22%, indicando pouca atividade citoplasmática. Oito gerações de espermatogônia foram estimadas. A eficiência da espermatogênese na meiose e mitose foi de 63% e49%, respectivamente. A espermatogênese de rãtouro segue os padrões dos demais Anuros de cativeiro, apresentando diferenças nos núcleos das c��lulas de Sertoli e Leydig.

  13. Hyperbolic kaleidoscopes and Chaos in foams and Hele-Shaw cell

    Energy Technology Data Exchange (ETDEWEB)

    Tufaile, A P B; Tufaile, A [Escola de Artes, Ciencias e Humanidades da Universidade de Sao Paulo, R. Arlindo Bettio, 1000, 03828-000, Sao Paulo (Brazil); Liger-Belair, G, E-mail: atufaile@usp.br [Laboratoire d' OEnologie et Chimie Appliquee, UPRES EA 2069, URVVC, Faculte de Sciences de Reims, Moulin de la Housse, B. P. 1039, 51687 Reims, Cedex 2 (France)

    2011-03-01

    Liquid foams have fascinating optical properties, which are caused by the large number of light refractions and reflections by liquid films and Plateau borders. Due to refraction and reflection at the interfaces, the direction of the rays leaving a Plateau border can vary greatly for the same incident angle and a small positional offset. A close look in some configurations of the Plateau borders or liquid bridges reveals the existence of some triangular patterns surrounded by a complex structure, and these patterns bear a resemblance to those observed in some systems involving chaotic scattering and multiple light reflections between spheres. Provided the optical properties of the sphere surfaces are chosen appropriately, fractals are natural consequences of multiple scattering of light rays in these cavities. The cavity acts as a hyperbolic kaleidoscope multiplying the scattering of light rays generating patterns related to Poincare disks and Sierpinski gaskets in comparison to linear kaleidoscopes. We present some experimental results and simulations of these patterns explained by the light of the chaotic scattering.

  14. Environmental Assessment for a Fighter Detachment Facility, Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2005-04-01

    P.T. Hurley , K.M. Carney, R. Abell, and S. Walters, 1999. Terrestrial Ecoregions of North America: A Conservation Assessment. World Wildlife Fund...Should you have any further questions or comments concerning this matter, please contact Tonya Lott at (803) 898-4291. ~ Henry Phillips, Manager

  15. Woman power in Corporate India In conversation with Kiran Mazumdar Shaw, Chairperson & MD, Biocon ltd

    Directory of Open Access Journals (Sweden)

    Anitha Kurup

    2011-12-01

    Empirical evidence suggests that though women directors on Indian corporate boards show an increase both in numbers and in percentage terms, they are very much behind men. Women are also less well represented on Indian corporate boards as compared to other countries. Family ties, public sector employment and private sector banks are major sources of directorships for women. There are very few first generation women entrepreneurs in India. Though initial thresholds are higher for women to achieve success, the problems they face afterwards are similar to problems faced by successful men. India has a long way to go before women can catch up with men in the corporate world.

  16. Results of Kinder Camp: Stovall-Shaw Elementary School, Summer 2001.

    Science.gov (United States)

    Irvine, David J.

    North Carolina's Kinder Camp is a 4-week program designed to prepare children for entry into kindergarten. All participants must have completed Project Family Read. A North Carolina elementary school measured the programs effectiveness by using the Cognitive/Language Profile of the American Guidance Service Early Screening Profiles as a pre- and…

  17. Existence and uniqueness of the Hele-Shaw problem with injection

    OpenAIRE

    Lin, Yulin

    2008-01-01

    This paper gives a new and short proof of existence and uniqueness of the Polubarinova-Galin equation. The existence proof is an application of the main theorem in Lin's paper. Furthermore, we can conclude that every strong solution can be approximated by many strong polynomial solutions locally in time.

  18. Organochlorine residues in South American sea lions, Otaria flavescens (Shaw, 1800): bioaccumulation and time trends.

    Science.gov (United States)

    Borrell, A; Garcia-Solà, A; Aguilar, A; García, N A; Crespo, E A

    2010-06-01

    Blubber from stranded South American sea lions (Otaria flavescens) was sampled between 1991 and 2005 on the Peninsula Valdés in Argentina and analyzed for organochlorine (OC) pollutants. Mean blubber concentrations, expressed on an extractable basis, were 686 (SD = 1,060) ng g(-1) for dichlorodiphenyl trichloroethane (tDDT) and 735 (SD = 787) ng g(-1) for polychlorinated byphenils (PCB). The OC levels were well below those associated with adverse sublethal effects and lethality in mammals. OC concentrations showed statistically significant associations with age that were positive in males and negative in females. These trends are consistent with the majority of marine mammal populations studied. There were no trends in the levels of tDDT or PCB over time. In spite of the low levels detected, OC contamination was present consistently over the 14-year period, suggesting continuous inputs from geographic redistribution.

  19. Campylobacter insulaenigrae: first isolation report from South American sea lion (Otaria flavescens, (Shaw, 1800

    Directory of Open Access Journals (Sweden)

    Mario González

    2011-03-01

    Full Text Available Campylobacter insulaenigrae have been isolated from different pinnipeds but not from South American sea lion (Otaria flavescens. The aim of this work is to report the first isolation of C. insulaenigrae from South American sea lion (Otaria flavescens. The isolate, identified by its phenotypic and molecular characteristics, allow recognizing O. flavescens as a new host for C. insulaenigrae.

  20. Mitochondrial control region haplotypes of the South American sea lion Otaria flavescens (Shaw, 1800

    Directory of Open Access Journals (Sweden)

    L.O. Artico

    2010-09-01

    Full Text Available The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande, both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop was analyzed. Seven novel haplotypes were found in 56 individuals (OFA1-OFA7, with OFA1 being the most frequent (47.54%. Nucleotide diversity was moderate (π = 0.62% and haplotype diversity was relatively low (67%. Furthermore, the median joining network analysis indicated that Brazilian haplotypes formed a reciprocal monophyletic clade when compared to the haplotypes from the Peruvian population on the Pacific coast. These two populations do not share haplotypes and may have become isolated some time back. Further genetic studies covering the entire species distribution are necessary to better understand the biological implications of the results reported here for the management and conservation of South American sea lions.

  1. Campylobacter Insulaenigrae: First Isolation Report from South American sea lion (Otaria Flavescens, (Shaw, 1800).

    Science.gov (United States)

    González, Mario; Paz Villanueva, Maria; Debruyne, Lies; Vandamme, Peter; Fernández, Heriberto

    2011-01-01

    Campylobacter insulaenigrae have been isolated from different pinnipeds but not from South American sea lion (Otaria flavescens).The aim of this work is to report the first isolation of C. insulaenigrae from South American sea lion (Otaria flavescens).The isolate, identified by its phenotypic and molecular characteristics, allow recognizing O. flavescens as a new host for C. insulaenigrae.

  2. Campylobacter insulaenigrae: first isolation report from South American sea lion (Otaria flavescens, (Shaw, 1800)

    OpenAIRE

    Mario González; Maria Paz Villanueva; Lies Debruyne; Peter Vandamme; Heriberto Fernández

    2011-01-01

    Campylobacter insulaenigrae have been isolated from different pinnipeds but not from South American sea lion (Otaria flavescens). The aim of this work is to report the first isolation of C. insulaenigrae from South American sea lion (Otaria flavescens). The isolate, identified by its phenotypic and molecular characteristics, allow recognizing O. flavescens as a new host for C. insulaenigrae.

  3. Mitochondrial control region haplotypes of the South American sea lion Otaria flavescens (Shaw, 1800).

    Science.gov (United States)

    Artico, L O; Bianchini, A; Grubel, K S; Monteiro, D S; Estima, S C; Oliveira, L R de; Bonatto, S L; Marins, L F

    2010-09-01

    The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop) was analyzed. Seven novel haplotypes were found in 56 individuals (OFA1-OFA7), with OFA1 being the most frequent (47.54%). Nucleotide diversity was moderate (π = 0.62%) and haplotype diversity was relatively low (67%). Furthermore, the median joining network analysis indicated that Brazilian haplotypes formed a reciprocal monophyletic clade when compared to the haplotypes from the Peruvian population on the Pacific coast. These two populations do not share haplotypes and may have become isolated some time back. Further genetic studies covering the entire species distribution are necessary to better understand the biological implications of the results reported here for the management and conservation of South American sea lions.

  4. BIOAVAILABILITAS FORTIFIKAN, DAYA CERNA PROTEIN, SERTA KONTRIBUSI GIZI BISKUIT YANG DITAMBAH TEPUNG IKAN GABUS (Ophiocephalus striatus DAN DIFORTIFIKASI SENG DAN BESI

    Directory of Open Access Journals (Sweden)

    Dewi Kartika Sari

    2015-02-01

    dilakukan analisis bioavailabilitas Zn dan Fe. Hasil sidik ragam menunjukkan bahwa bioavailabilitas Zn dan Fe tidak berbeda nyata pada berbagai taraf fortifikasi (p>0.05. Biskuit hasil fortifikasi Zn dan Fe sebesar 50% AKG memiliki bioavailabilitas tertinggi, yaitu masing-masing 76,32% dan 41,80%. Formula biskuit ini dipilih untuk dianalisis lebih lanjut, yang meliputi analisis sifat fisik, kimia, dan daya cerna protein. Hasil analisis menunjukkan bahwa biskuit terpilih tersebut lebih renyah daripada biskuit komersial. Dalam 100 g biskuit tersebut terkandung air, abu, protein, lemak, dan karbohidrat berturut-turut sebesar 2,73 g; 2,08 g; 13,34 g; 24,53 g; 57,32 g; serta energi sebesar 503 kkal. Kadar Fe dan Zn biskuit terpilih tersebut adalah 11,7 mg dan 8,83 mg/100 g; dengan daya cerna protein sebesar 78,45%. Biskuit berbasis tepung ikan gabus 15% yang difortifikasi Zn dan Fe sebesar 50% AKG memenuhi standar kualitas biskuit SNI 01-2973-1992. Kontribusi biskuit terpilih terhadap AKG energi, protein, Fe dan Zn berturut-turut adalah 19,48%; 20,51%; 74,44%; 54.44%. Kata kunci: Bioavailabilitas, biskuit ikan gabus, daya cerna protein, fortifikasi

  5. Mechanical properties and water vapour permeability of film from Haruan (Channa striatus) and fusidic acid spray for wound dressing and wound healing.

    Science.gov (United States)

    Febriyenti; Noor, Azmin Mohd; Bai, Saringat Bin

    2010-04-01

    Aerosol is a new dosage form for wound dressing and wound healing. Concentrate of aerosols which were prepared for wound dressing and wound healing will produced films after sprayed onto the surface of wounds. The aim of this study is to evaluate the mechanical and water vapour permeability properties of the films from the aerosol concentrates. Film forming dispersions contained Haruan extract and Fusidic acid as the active ingredients, hydroxypropyl methylcellulose (HPMC) as polymer and polyethylene glycol (PEG) 400, glycerin and propylene glycol as plasticizers. Haruan extract is used to promote healing and Fusidic acid is added in formula as antibiotic to prevent the infections. The films were prepared by using casting technique. Based on the results, it is concluded that films produced from Formula E1, E2 and F4 possessed good elongation at break but low tensile strength. All Formula E, Formula F4 and F5 were permeable but Formula F5 was brittle and would peel off by themselves from the Petri dish.

  6. Dynamics and cytochemistry of oogenesis in Leporinus striatus Kner (Teleostei, Characiformes, Anostomidae from the Rio Sapucaí, Minas Gerais State, Brazil

    Directory of Open Access Journals (Sweden)

    Helena A.S. Chini

    2001-12-01

    Full Text Available Oogenesis involves a sequense of transformations which are undergone by female germ cells. These cells change into oogonias and then into mature oocytes. Sexually mature females were collected monthly, during one year, from the Rio Sapucaí, tributary of the Rio Grande, which is part of the Furnas Reservoir system in the state of Minas Gerais. The observed material showed that oogonias were small spherical cells, had a big spherical nucleus, with a single nucleolus, and weakly stained cytoplasm with eosinophilic granules (FG stained, which indicate their protein content. The primary oocytes showed a big basophilic nucleus, with a large peripheral nucleolus, and several smaller nucleoli. They show a reduced cytoplasmic content. The previtellogenic oocytes presented voluminous cytoplasm and nucleus with several small peripheral nucleoli. The oocytes underwent vitellogenesis with the development of the zona radiata and the follicle cells. The zona radiata had two layers, the outer and the inner, which showed its protein content when stained with CM and FG techniques. TB pH 2.5 and pH 4.0 staining showed that oocytes undergoing vitellogenesis presented weakly stained cytoplasm and peripheral cytoplasmic vesicles. The follicle cells that were squamous became cuboidal. In mature oocytes, the yolk granules that filled the cytoplasm became green and blue when stained with FG and CM techniques, indicating their protein content. The perivitclline region showed rosy stained vesicles (TB pH 2.5 and pH 4.0 spread among the weakly stained peripheral vesicles, which seemed to be the cortical alveoli. The zona radiata cells, CM and FG stained, still showed two layers like the oocytes from the previous stage, but thicker.

  7. Patrones reproductivos del lobo marino común, Otaria flavescens (Shaw 1800, en el centro-sur de Chile Breeding patterns in southern sea lions, Otaria flavescens (Shaw 1800, in south-central Chile

    Directory of Open Access Journals (Sweden)

    HÉCTOR J PAVÉS

    2005-12-01

    Full Text Available El desfase latitudinal de los eventos reproductivos en Otaria flavescens sugiere la existencia de una adaptación fisiológica y conductual a condiciones ambientales locales. La identificación de cambios en los patrones conductuales intraespecíficos frente a modificaciones ambientales sugieren una relación entre estos. Se pretende revisar los patrones reproductivos del O. flavescens, determinando la existencia de una sincronización y estabilidad en ellos durante las temporadas 1996-1997 y 1997-1998 en la colonia de Punta Lobería, Chile. Se realizaron observaciones directas de las agrupaciones y conductas reproductivas empleando binoculares, y apoyadas por el uso de material fílmico y fotográfico. Los resultados evidenciaron modificaciones en, (a el número de harenes (de 28 disminuye a 19, (b la distribución espacial de los harenes (70 % de los harenes durante 1997-1998 se establecieron en el lado norte de la playa reproductiva, durante la temporada anterior estos se distribuyeron a lo largo de toda la playa, (c proporción etaria (un macho: 12 hembras: un juvenil: siete cachorros, desciende a un macho: nueve hembras: dos juveniles: seis cachorros, (d índice de poliginia (de 12,4 a 7,8 HPMT y de 11 a 9 HP, y (e la población organizada en harenes (disminución del 10,3 %. Estas variaciones estarían relacionadas con la reducción del espacio óptimo para el establecimiento de harenes debido a la incorporación de suelo/roca posterior a un derrumbe invernal. Los patrones conductuales reproductivos que se mantuvieron invariables durante las temporadas fueron, (a la estacionalidad de los harenes (constitución durante la cuarta semana de diciembre y disolución en la cuarta semana de febrero, (b el período de partos (inicio durante la segunda semana de enero, finalización durante la cuarta semana de enero, y (c el período de cópulas (inicio durante la tercera semana de enero, finalización durante la segunda semana de febrero. Por lo tanto, O. flavescens presentaría conductas modificables y permanentes que se despliegan según las condiciones ambientales. Donde las conductas reproductivas modificadas potencialmente mitigarían pérdidas en aspectos reproductivos, y las conductas reproductivas permanentes, estarían relacionadas con procesos fisiológicos y conductuales seleccionados bajo las condiciones ambientales. Estos patrones reproductivos al ser comparados con las de otras localidades son congruente con un efecto latitudinal, debido a la variación registrada tanto en la estacionalidad de ellos como en la duración de los mismos (e.g., período de partos y cópulas.The latitudinal effect of reproductive patterns for Otaria flavescens suggests the existence of behavioral and physiological adaptation to local environmental conditions. The identification of intraspecific behavioral pattern changes due to these environmental conditions suggest a relation among them. We pretend here to determine reproductive synchronization and reproductive stability of O. flavescens in the Punta Lobería colony during two breeding seasons 1996-1997 and 1997-1998. Direct observations of groups and breeding behavior were watched with binoculars backed by video and photography. Results evidenced modification in (a the number of harems (decreased from 28 to 19 during first to the second seasons, (b the spatial distribution of harems (70 % of these were located in northern part of the reproductive beach during the 1997-1998 season whereas they occupied the whole beach rather uniformly during the previous season, (c age structure (one male: 12 females: one juvenile and seven pups decreased to one male: nine females: two juveniles and six pups, (d the polygyny index (decreased from 12.4 to 7.8 HPMT and from 11 to 9 HP, and (e the reproductive population organized in harems (decreased of up to 10.3 %. These variations would be related to optimum space reduction for harem establishment after an earth/rock slide over the area. Behavioral reproductive patterns remaining stable during both seasons were (a seasonality of harems (harem formation during the fourth week in December, dissolution during the fourth week of February, (b birth period (beginning during the second week of January and ending during the fourth week of January, and (c mating period (beginning during the third week of January, ending during the second week in February. Otaria flavescens exhibited modifiable and stable behavioral patterns according to environmental conditions. Modified breeding behavior potentially would mitigate loss of reproductive output, and stable breeding behavior would be related to physiological and behavioral processes according to environmental conditions. Thus, reproductive patterns when compared to other known reproductive localities in Chile are consistent with a latitudinal effect due to variations registered by their seasonality, as well as its duration (e.g., mating and birth periods

  8. Environmental Assessment for Proposed Aircraft Replacement, 507th Tactical Air Control Wing, Shaw Air Force Base, South Carolina

    Science.gov (United States)

    1986-03-01

    7=1r LUIB MUM= 1ý14 . I.’D 󈨚 1 :-•.HC,• Tý4-7 DI-U’F_1 LAHILF__’ PFE ; ...4• - C, significant impact on the management of hazardous wraterfals, the...Detachment 1372, Air Force Audit Agency; the 2020th Information Systems Squadron; Field Training Detachment 307; and Detachment 9, Tactical

  9. Effects of the organophosphorus pesticide Folisuper 600 (methyl parathion on the heart function of bullfrog tadpoles, Lithobates catesbeianus (Shaw, 1802

    Directory of Open Access Journals (Sweden)

    M. J. Costa

    Full Text Available Abstract The aim of this work was to evaluate whether the heart function of bullfrog tadpoles (25 Gosner stage is affected by their acute exposure (48 h to a sub-lethal concentration (10 µg.L–1 of the active principle of the organophosphorus pesticide Folisuper 600R (methyl parathion - MP. Our results demonstrated that MP causes not only a reduction in tadpoles’ cardiac ventricular mass, resulting in a marked reduction in their cardiac twitch force, but also impairs their swimming performance, irrespective of increasing their heart rate. Together, these findings indicate that low and realistic concentration of MP have a negative impact on tadpoles’ performance, jeopardizing their survival.

  10. Archaeological Resources Overview of Shaw Air Force Base and Pointsett Electronic Combat Range, Sumter County, South Carolina

    Science.gov (United States)

    2006-04-01

    Middle Archaic and consists of a series of prepared clay house floors recovered from middle and late Holocene contexts in Alabama and Mississippi ( Ensor ...are characterized as either permanent villages or, more often, semi-permanent, seasonal base-camps (see Ensor and Studer 1983; Klipple and Turner...the late 1740s (Gregorie 1954:12). One of the first settlers into the North Britain Tract was Sherwood James , who ran a tavern near what is now

  11. Yokihi and Shaw Brothers' Chinese Historical Costume Epic%《杨贵妃》与邵氏宫廷片

    Institute of Scientific and Technical Information of China (English)

    邱淑婷

    2008-01-01

    (1955,沟口健二) 是第一出打着"港日合拍片"旗号的电影,在历史上具有划时代的意义.然而,有关本片的研究向来不多,评价亦见负面.本文尝试从的制作背景及艺术成就,讨论其在承接第二次世界大战时期中日电影于上海的合作基础,以及对日后邵氏大举拍摄大型彩色宫廷片,如李翰祥导演的(1962)、(1963)和(1964)的意义.

  12. Simulating N2O emissions in different tillage systems of irrigated corn using RZ-Shaw model

    Science.gov (United States)

    Nitrous oxide (N2O) is potent greenhouse gas (GHG) and agriculture is a global source of N2O emissions from soil fertility management. Yet emissions vary by agronomic practices and environmental factors that govern soil moisture and temperature. Ecosystem models are important tools to estimate N2O e...

  13. Use of feces to attract insects by a Glittering-bellied Emerald, Chlorostilbon lucidus (Shaw, 1812 (Apodiformes: Trochilidae

    Directory of Open Access Journals (Sweden)

    Fábio André Facco Jacomassa

    2014-09-01

    Full Text Available This study describes the occurrence of a female Glittering-bellied Emerald, Chlorostilbon lucidus, using feces to attract insects to the nesting site for predation. This is the first report of a hummingbird using feces to attract insects.

  14. Processing Dante’s Commedia: From Sanguineti’s Edition to Digital Tools [Review of: Dante Alighieri Commedia A Digital Edition, Prue Shaw (ed.), 2010.

    NARCIS (Netherlands)

    Spadini, E.

    2015-01-01

    The Commedia project aims to investigate the manuscript transmission of the poem, using Sanguineti’s previous edition and checking the validity of his stemma with computer methods. Full transcriptions of the seven selected witnesses are provided alongside the corresponding facsimiles. The end result

  15. Mental Health Inequalities in Adolescents Growing Up in Post-Apartheid South Africa: Cross-Sectional Survey, SHaW Study.

    Directory of Open Access Journals (Sweden)

    Jayati Das-Munshi

    Full Text Available South Africa is one of the most 'unequal' societies in the world. Despite apartheid ending more than 20 years ago, material inequalities remain interwoven with ethnic/racial inequalities. There is limited research on the prevalence/predictors of common mental disorders (CMD among young people. Adolescence is a unique time-point during which intervention may lead to improved mental health and reduced social problems later. The study objective was to assess mental health disparities in a representative sample of adolescents growing up in South Africa.Cross-sectional associations of race/ethnicity and material disadvantage with CMD and Post Traumatic Stress Disorder (PTSD were assessed in a stratified random sample representative of school-attendees, aged 14-15 years, in a large metropolitan area of Cape Town. Validated instruments assessed mental disorders; these included: Harvard Trauma Questionnaire (PTSD; Short Moods and Feelings Questionnaire (depression; Zung self-rated anxiety scale (anxiety. Self-ascribed ethnicity was determined using procedures similar to the South African census and previous national surveys.Response rate was 88% (1034 of 1169 individuals. Adolescents experienced a high prevalence of depression (41%, anxiety (16% and PTSD (21%. A gradient between material disadvantage and CMD/ PTSD was evident across all ethnic/racial groups. Respondents self-identifying as 'black' or 'coloured' were disadvantaged across most indicators. After adjusting for confounders, relative to white children, relative risk (RR of CMD in black children was 2.27 (95% CI:1.24, 4.15 and for PTSD was RR: 2.21 (95% CI:1.73, 2.83. Relative risk of CMD was elevated in children self-identifying as 'coloured' (RR: 1.73, 95% CI:1.11, 2.70. Putative mediators (violence, racially motivated bullying, social support, self-esteem partially accounted for differences in CMD and fully for PTSD.Adolescent mental health inequalities in Cape Town are associated with material disadvantage and self-identification with historically disadvantaged groups.

  16. Reproduction of the exotic bullfrog Lithobates catesbeianus (Shaw, 1802 (Anura, Ranidae in creeks of the Atlantic Rainforest of Minas Gerais, Brazil

    Directory of Open Access Journals (Sweden)

    Lilian Gomes Afonso

    2010-09-01

    Full Text Available Reproduction of the exotic bullfrog Lithobates catesbeianus was studied every two months from January 2005 to December 2006, analyzing tadpoles, juveniles, and adult vocalizations at three creeks located in the largest Brazilian center of ornamental fish breeding. Absolute and relative tadpole frequencies were measured bimonthly in three development stages: G1 (no limbs, G2 (hind limbs present, G3 (fore and hind limbs and I (metamorphs. Results show that, during warmest months, a greater proportion of tadpoles in G1, G2, and G3 phases were found in Santo Antônio and Chato creeks, while G1, G3, and I phases were more common in Gavião creek. Tadpoles in G1 and G2 phases predominated in coldest months at all locations. Male calls and highest average water temperatures and rainfall were recorded at 3 streams during the hottest months. Management measures should be adopted, such as the extermination of larval and adult stages, and initiatives should be taken to prevent new re-introductions, such as: (1 installation of fences around tanks where adults are located, (2 placement of protective screens on the pipes that release waste water from tanks directly into streams, (3 capacity building and educational measures on the problems of biological invasions for staff working on ornamental fish farms.

  17. Environmental Assessment for Employment of a Mobile Laser Evaluator System (LES-M) for the 20th Fighter Wing at Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2004-05-01

    training and tactical mode. These data will be further refined when production models of the system are available (Roach 2002, Appendix D). Prior...vehicle use for the LES-M and personal vehicle use by personnel continuing to support the existing missions would consume fuel, oil , and lubricants...8217Acioenser brevirostrum• E Known ! ea-beach amaranth Amaranthus pumilus T Known Pondberrv Lindera melissifolia E Possible ···- :anby’s dropwort

  18. Status quo, Methods and Meanings of Researching the Shaw Brothers' Films%邵氏电影研究的现状、方法和意义

    Institute of Scientific and Technical Information of China (English)

    刘辉

    2006-01-01

    邵氏家族开办的电影公司横跨中国电影半个多世纪,是中国电影史上时间最长、规模最大的家族性电影机构,其中以邵逸夫经营的邵氏兄弟(香港)公司最为突出.近年来,随着大批老的邵氏影片重新数码修复后,以影碟的方式重新投入市场,学术界开始逐渐注意到了邵氏兄弟公司在香港电影本体建构过程中的重要贡献,同时更包括其对于华语电影开拓海外市场的尝试意义.本文旨在对目前邵氏研究的现状做出初步的总结,并指出目前邵氏研究过程中需要进一步引入的观点和角度,希望为邵氏电影这一华语电影的重要现象提出一种学术的思维方式.

  19. The Shaw Brothers Pan-Chinese Cinema%在香港建构"中国":邵氏电影的大中华视野

    Institute of Scientific and Technical Information of China (English)

    傅葆石; 刘辉

    2006-01-01

    邵氏兄弟电影公司垄断了20世纪60-80年代时期的华语电影市场(大陆市场除外).在这段时期,邵氏兄弟公司改变了香港电影的制片方式、娱乐产业和电影文化,同时也建立了全球化的电影发行网络,使得邵氏电影成为成千上万的海外流离华人共同的梦幻家园,邵氏电影成为香港、台湾、新加坡及其亚太地区、欧洲和美国的华人世界中最为流行的娱乐方式.然而一直到近期,都没有出现对邵氏电影的系统研究.这篇文章旨在对邵氏的跨地域发展做出历史的分析,并强调它在华语电影全球化过程中的先锋意义.

  20. 论刘家良在"邵氏"的功夫片创作%On Lau Kar Leung's Kungfu Films Produced by Shaw Brothers Company

    Institute of Scientific and Technical Information of China (English)

    苏涛

    2007-01-01

    刘家良是香港武侠片/功夫片历史上最有影响力的电影人之一.从1975年独立执导以来,刘家良一举成为"邵氏"及香港功夫片的代表人物.本文从武打设计、谐趣情节、意识形态入手,对刘家良在"邵氏"的功夫片创作进行系统分析,并试图以此为基础评价刘家良在香港电影史上的地位.

  1. The Domination of Ideas and Intellectuality in Gaining the Power and Hegemony in the Play Man and Superman by George Bernard Shaw

    Directory of Open Access Journals (Sweden)

    Wajiran

    2013-08-01

    Full Text Available This study aims to examine the concept of hegemony in Man and Superman, a play written by a social and political activist. This play contains important lessons for social changes. Consequently, it can be regarded as a propaganda expressed by the author for making changes in the society. A sociological theory, i.e. the theory of hegemony proposed by Antonio Gramsci, was used in the study. By using this theory, it is expected that the relationship between literature and the condition of the society at that time that triggers the birth of this work as well as the author’s hopes and expectation could be understood. Through this approach, it is expected that the norms and educational values embodied in the play could be revealed and understood.

  2. Environmental Assessment for Extension of Wastewater Treatment Plant Effluent Force Main and Discharge to Wateree River for Shaw Air Force Base, South Carolina

    Science.gov (United States)

    2004-12-01

    water storage, flood flow attenuation, nutrient and pollutant removal /transformation, recreation (e.g., birding, hunting), and wildlife habitat...compound WMA Wildlife Management Area WWTP Wastewater Treatment Plan FINDING OF NO SIGNIFICANT IMPACT/ FINDING OF NO PRACTICABLE ALTERNATIVE...alternative. Biological Resources: It is not expected that the proposed action or the Gum Swamp alternative would have an effect on species listed or

  3. Campylobacter insulaenigrae: first isolation report from south american sea lion (Otaria flavescens, (Shaw, 1800)

    OpenAIRE

    González, M.; M. P. Villanueva; Debruyne, L.; Vandamme, P.; Fernández, H.

    2011-01-01

    Campylobacter insulaenigrae have been isolated from different pinnipeds but not from South American sea lion (Otaria flavescens). The aim of this work is to report the first isolation of C. insulaenigrae from South American sea lion (Otaria flavescens). The isolate, identified by its phenotypic and molecular characteristics, allow recognizing O. flavescens as a new host for C. insulaenigrae.

  4. Phase I and II Archaeological Investigations at Shaw Air Force Base and the Poinsett Electronic Combat Range, Sumter County, South Carolina

    Science.gov (United States)

    2005-02-01

    conducted the initial laboratory processing of all cultural material. Victoria Dabir-Banguilan and Alvin Banguilan completed the lithic analysis , while John...ANALYSIS Lithics Analysis The lithic analysis program was designed to record information on raw material type, functional class, breakage patterns, and size...not described in detail. Summaries of historic artifacts are provided on a site by site basis in the following chapters. LITHIC ANALYSIS The methods

  5. Efeito da temperatura e do fotoperíodo sobre o desenvolvimento do aparelho reprodutor de rã-touro (Rana catesbeiana Shaw, 1802 Effect of the temperature and the photoperiod on the development of bullfrog (Rana catesbeiana Shaw, 1802 reproduction apparel

    Directory of Open Access Journals (Sweden)

    Mario Roberto Chim Figueiredo

    2001-06-01

    Full Text Available Foram avaliados os efeitos da temperatura e do fotoperíodo sobre a maturação sexual de rãs-touro pesando 94,22 g ± 12,03, mantidas durante trinta dias em temperaturas de 20, 23, 26, 29, 32 e 35°C, com fotoperíodo de 12/12 horas de luz/horas de escuridão (h L/E. A temperatura afetou os pesos do corpo gorduroso e do fígado, os quais variaram de acordo com modelos quadráticos, estimando-se maiores pesos de corpo gorduroso a 27,27°C e de fígado a 26,81°C. Estimaram-se ovários mais pesados a 28,36°C e ovidutos mais pesados a 28,77°C. Temperatura afetou a maturação sexual das rãs, avaliada por índices numéricos. Num experimento mais longo, rãs com peso médio inicial de 95,31 ± 8,46 g foram submetidas à combinação das temperaturas de 26 e 29°C com os fotoperíodos de 8/16, 12/12 e 16/8 h L/E, até atingirem a maturidade gonadal. Temperatura interagiu com fotoperíodo em seus efeitos sobre o desenvolvimento dos órgãos reprodutivos de rã-touro. Temperatura afetou a relação diâmetro do abdômen/distância entre os olhos, com maiores valores calculados para 26°C. Verificou-se que os maiores diâmetros dos ovócitos são obtidos a uma temperatura de 26°C, com fotoperíodo de 12,6/11,4 h L/E.The effects of the temperature and of the photoperiod on the bull frog sexual maturation of frogs weighing 94.22 g ± 12.03, maintained for thirty days under temperatures of 20, 23, 26, 29, 32 and 35°C, with photoperiod of 12/12 hours of light/hours of darkness (h L/D, were evaluated. Temperature affected the weights of the fat body and liver, that varied according to quadratic models, and higher weights of fat body at 27.27°C and of liver at 26.81°C were considered. The ovaries heavier than 28.36°C and oviducts heavier than 28.77°C were estimated. Temperature affected the sexual maturation of the frogs, evaluated by numeric indexes. In a longer experiment, frogs with initial weight of 95.31 g ± 8.46, were submitted to the combination of the temperatures of 26.0 and 29.0°C with photoperiods of 8/16, 12/12 and 16/8 h L/D, until they reach the gonadal maturity. Temperature interacted with photoperiod in its effects on the development of the reproductive organs of bullfrog. Temperature affected the diameter of the abdomen/distance relation between the eyes, with higher values calculated for 26°C. It was considered that the highest ovocites diameters are obtained under a temperature of 26.0°C, with photoperiod of 12.6/11.4 h L/D.

  6. Evocatin of the Spirit: A-capella-Werke von Gorecki, Pärt, Martin, Barber und Schönberg / Gerhard Pätzig

    Index Scriptorium Estoniae

    Pätzig, Gerhard

    1995-01-01

    Uuest heliplaadist "Evocatin of the Spirit: A-capella-Werke von Gorecki, Pärt, Martin, Barber und Schönberg. Robert Shaw Festival Singers. Robert Shaw (AD: 1994). Telarc/in-akustik CD 80406 (WD: 72'15")

  7. 75 FR 34765 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2010-06-18

    ... Feliciana Parish California Club, The, 538 S Flower St, Los Angeles, 10000425 Iberia Parish Vida Shaw Bridge, Vida Shaw Rd near intersection with SHWY 344, Loreaville, 10000419 MASSACHUSETTS Middlesex...

  8. A Delicate Balance: The Catholic College in America

    Science.gov (United States)

    Trainor, Stephen L.

    2006-01-01

    George Bernard Shaw famously quipped that "a Catholic university is a contradiction in terms." While the party-line response to Shaw is that the term "Catholic university" is instead a tautology, those who work, study, and teach at such institutions often find themselves pondering Shaw's oxymoron, asking themselves: how are they a university, and…

  9. Crayfish Sampling on the Whaley Tract

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Report discusses electrofishing for crayfish in a small creek on the FHmA Whaley Tract targeting Orconectes sp. Only Procambarus hayi and Cambarus striatus were...

  10. 论邵氏《西游记》系列电影中女性形象的塑造%Women in Shaw Brothers Movies Based on Pilgrimage to the West

    Institute of Scientific and Technical Information of China (English)

    王凡

    2016-01-01

    作为20世纪60年代香港“西游记”题材电影的重要作品,由邵氏兄弟(香港)有限公司投资拍摄的《西游记》《铁扇公主》《盘丝洞》《女儿国》四部影片,通过原著女性形象反面色彩的强化、女性形象官能意味的含蓄性表述投射出深受传统文化影响的影片主创者对于女性“祸水”观的承袭,并折射出当时香港电影艺术家对于《西游记》这部古典小说名著的独特理解与影像诠释.这种电影创作实践,证明了古典名著的人物影像化重塑乃至整体改编只有实现艺术诉求与商业票房、忠实原著与改编创新的双向平衡,才能更好地普及古典名著,弘扬传统文化.

  11. The Shaw Brothers' New Era of Martial Arts Film in the Centenary of Chinese Cinema%百年中国电影中的邵氏"武侠新世纪"

    Institute of Scientific and Technical Information of China (English)

    王海洲

    2006-01-01

    本文从百年中国电影的大理念出发审视20世纪60年代邵氏开启武侠新世纪的历史价值,华语武侠电影正是从那个平台重新出发才走到今天的高度.在掌握大量资料的前提下,本文从产业发展战略、人才养成、文化策略、国际视野等角度对邵氏武侠电影制作进行了深入的研究,并对其在中国电影历史中的价值和地位进行了深入的分析.

  12. The suspense martial arts films by Hong Kong Shaw Brothers and their image styles%香港邵氏悬疑武侠片及其影像风格探微

    Institute of Scientific and Technical Information of China (English)

    王凡

    2015-01-01

    20世纪70-80年代,香港邵氏兄弟有限公司投资拍摄了一系列颇具影响力的悬疑武侠片.作为处于鼎盛时期的邵氏武侠片的一种亚类型电影,邵氏悬疑武侠片呈现出悬念手法的成功运用、侠客式侦探的独特塑造以及悬疑氛围的巧妙营造等诸多特异的影像风格,从而体现出香港电影独特的艺术气质.

  13. Leishmaniose cutânea experimental: I - sobre a susceptibilidade do primata Cebus apella (Cebidae a infecção pela Leishmania (Viannia lainsoni Silveira, Shaw, Braga e Ishikawa, 1987

    Directory of Open Access Journals (Sweden)

    Fernando T. Silveira

    1989-09-01

    Full Text Available Foi investigada a susceptibilidade do primata Cebus apella (Cebidae à infecção experimental pela Leishmaiua (Viannia lainsoni, com o objetivo de estudara patogenia desse parasita, ainda pouco conhecido para o homem. Dessa forma, cinco espécimens jovens daquele primata, 2 machos e 3 fêmeas, foram inoculados, intraderme, em oito sítios diferentes da região dorsal da cauda com 3 x 10(6 de promastigotas do parasita (MHOMZBR/81/M6426, Benevides, Pará, obtidas de cultura da fase estacionária. Em seguida às inoculações, a infecção experimental nos animais foi comprovada, não só pela presença de amastigotas do parasita na pele dos animais inoculados, mas, também, pela concomitância desse achado associado ao desenvolvimento de lesão cutânea nos pontos da pele onde o parasita foi inoculado. Diante desses resultados, ficou demonstrada a susceptibilidade do primata Cebus apella à infecção experimental pela Leishmama lainsoni cujo período de infecção durou quase quatro meses, suficiente para testar drogas antileishmanióticas e estudar a patogênese da doença causada por este parasita.The susceptibility of the monkey Cebus apella (Cebidae to experimental infection by Leishmania (Viannia lainsoni has been investigated. For this purpose, five young monkeys, 2 males and 3 females, were intradermally, inoculated, in eight different places along the dorsal surface of the tail with 3 x 10(6 promastigotes of the parasite (MHOM/BR/81/M6426, Benevides, Pará, from stationary phase culture in Difco B45 medium. After inoculations, infection in the monkeys was indicated by the presence of amastigotes in the skin lesions produced in these animals at the points of inoculation, confirming the susceptibility of the monkey Cebus apella to experimental infection by Leishmania lainsoni, with an infection period of four months. This represents a suitable period for testing antileishmanial drugs or studying the pathogenesis of the disease caused by this parasite.

  14. DIET AND REPRODUCTION OF LARGEMOUTH BASS IN A RECENTLY INTRODUCED POPULATION, LAKE BRACCIANO (CENTRAL ITALY

    Directory of Open Access Journals (Sweden)

    MARINELLI A.

    2007-04-01

    Full Text Available This paper concerns a study of some aspects of largemouth bass ecology in an Italian lake (Lake Bracciano. We assessed the success and possible impact of its recent introduction (1998 upon the fish community. From October 2001 to September 2002, 162 individuals were caught, measured, aged and submitted to biopsy (stomach and gonads were removed. Four age classes, from 0 + to 3 +, were observed in the population. Largemouth bass feeding activity was high in June, mostly eating fish (55.7%, crustaceans (in particular Palaemonetes antennarius, 37.5%, insects (4.5% and molluscs (2.3%. The G.S.I. values showed an autumnal breeding period (from December to February rather than the spring-summer one frequently described in North America. Moreover, bass attained sexual maturity during the second year of life (1 +. These differences could be related to its recent introduction and the apparent success could represent a problem for other species in the Lake.

  15. Rereading "The Jack-Roller:" Hidden Histories in Sociology and Social Work

    Science.gov (United States)

    Shaw, Ian

    2009-01-01

    I revisit one of the iconic Chicago School studies, Clifford Shaw's "The Jack-Roller". A naive reading of Shaw's book leaves the reader with a sense of having been inducted into a melange of what we now know as "sociology" and "social work," but which to Shaw seems a coherent stance. I suggest that this is close to the heart of how things were,…

  16. Report to Congress on Sustainable Ranges

    Science.gov (United States)

    2007-07-01

    include Centennial, Oscura and Red Rio. 13 Poinsett ranges include Game B/C/D/I, Poinsett Low, and Bulldog A/B. 14 Mountain Home Ranges include...07000AMSL USAF 1036 BULLDOG A MOA, GA FAA, ATLANTA ARTCC Shaw AFB 009999AMSL 00500AGL USAF 1052 BULLDOG B MOA, GA FAA, ATLANTA ARTCC Shaw AFB...018000AMSL 10000AMSL USAF 1677 BULLDOG D MOA, GA FAA, ATLANTA ARTCC Shaw AFB 017000AMSL 00500AGL USAF 79 GAMECOCK B MOA, SC FAA, JACKSONVILLE ARTCC Shaw

  17. Shavian / Pent Nurmekund

    Index Scriptorium Estoniae

    Nurmekund, Pent, 1906-1996

    1997-01-01

    G. B. Shaw' näidendi "Androkles ja lõvi" ilmus erilises foneetilises tähestikus, mille lõid Kingsley Read ja Peter MacCarthy, täites G. B. Shaw' testamendi ühte punkti. Varem ilm. ajal. Edasi, 1962, 18. dets.

  18. Construction of Rational Maps on the Projective Line with Given Dynamical Structure

    Science.gov (United States)

    2016-05-11

    Midshipman 1/C Ian E. Shaw, USN UNITED STATES NAVAL ACADEMY ANNAPOLIS, MARYLAND USNA-1531...2016) Construction of Rational Maps on the Projective Line with Given Dynamical Structure by Midshipman 1/C Ian E. Shaw United States ... equations formed by the coefficients of fixed point polynomials. The solution to this system is the set of coefficients of the quadratic rational map

  19. Mathematical Modeling of Flow Through Vegetated Regions

    Science.gov (United States)

    2013-08-01

    by Hoerner [36] obviously returns values between 0 and 2. Den Hartog and Shaw [22] performed experiments over a flexible corn canopy and estimated...Water Resources Research, 41(7):W07006, 2005. [22] G. Den Hartog and R.H. Shaw. A field study of atmospheric exchange processes within a vegetative

  20. First Person Past: American Autobiographies, Volume 2

    DEFF Research Database (Denmark)

    American literature, biography, Tunis Campbell, Black Elk, Andrew Carnegie, Booker T. Washington, Mary Antin, Mary Jones, Frederic Howe, Anna Howard Shaw, Woody Guthrie, Monica Sone, Anne Moody, Ron Kovic......American literature, biography, Tunis Campbell, Black Elk, Andrew Carnegie, Booker T. Washington, Mary Antin, Mary Jones, Frederic Howe, Anna Howard Shaw, Woody Guthrie, Monica Sone, Anne Moody, Ron Kovic...

  1. Obituaries and biographical notes

    NARCIS (Netherlands)

    NN,

    1986-01-01

    AIRY SHAW, see H.K.A. SHAW. ALLEN, Betty Eleanor Gosset Molesworth (1913, Opotiki, New Zealand — x) Fl. Mal. I, 5 (1958) cclii, portr.; Fl. Mai. I, 8 (1974) ix; E. FERNANDEZ GALIANO, Acta Bot. Malacitana 8 (1983) 5—10. (Spanish) Bibliogr.

  2. A Portrait of the Author as a Bibliography. The Center for the Book Viewpoint Series No. 9.

    Science.gov (United States)

    Laurence, Dan H.

    A lecture given at the Library of Congress by the literary and dramatic advisor to the estate of Bernard Shaw and author of a two-volume bibliography of Shaw is presented in this pamphlet. The lecture discusses kinds of author bibliographies, the demands of early book collectors, first edition mania, the Soho bibliographies, R.L. Purdy's…

  3. The impact of Nassau grouper size and abundance on scuba diver site selection and MPA economics

    NARCIS (Netherlands)

    Rudd, M.A.; Tupper, M.H.

    2002-01-01

    Since many fisheries are size-selective, the establishment of marine protected areas (MPAs) is expected to increase both the average size and abundance of exploited species, such as the valuable but vulnerable Nassau grouper ( Epinephelus striatus ). Increases in mean size and/or abundance of protec

  4. Dicty_cDB: SLC181 [Dicty_cDB

    Lifescience Database Archive (English)

    Full Text Available vs Protein Score E Sequences producing significant alignments: (bits) Value FJ498995_1( FJ498995 |pid:none) Parda...lotus sp. CCJ-2008 cytochrome... 32 5.1 AF197847_1( AF197847 |pid:none) Pardalotus striatus cytochrome

  5. Parasites of commercial shrimps and fishes in Argentine sea: on the adult and metacercaria of Opecoeloides feliciae n. sp. (Digenea: Opecoelidae

    Directory of Open Access Journals (Sweden)

    Sergio Roberto Martorelli

    1992-03-01

    Full Text Available Opecoeloides feliciae n. sp., first record of opecoelid metacercariae in commercial shrimps of South Atlantic Ocean, parasitizing Cynoscion striatus (adults and Artemesia longinaris (metacercariae, is described, illustrated and compared with related species of the genus. Adults, immature worms and metacercariae are compared, and rates of prevalence and intensity of infection are also given.

  6. Desarrollo de una herramienta de modelación matemática acoplada con Técnicas de Vídeo para el estudio de flujos transitorios en tuberías en U y flujos potenciales en una celda Hele Shaw

    OpenAIRE

    Martínez Padilla, Edwin Alfonso

    2013-01-01

    Resumen: En esta tesis se ha desarrollado un software para facilitar el proceso de enseñanza-aprendizaje del movimiento oscilatorio amortiguado y forzado en tubos en U, y algunos casos de flujo potencial. El software desarrollado utiliza técnicas de procesamiento de imágenes para procesar los datos experimentales, lo que permite analizar las imágenes obtenidas en laboratorio, y comparar estos resultados con las soluciones teóricas. El error asociado a la técnica de video fue evaluado sepa...

  7. 77 FR 34026 - Procurement List; Proposed Additions

    Science.gov (United States)

    2012-06-08

    .... Contracting Activity: Dept of the Air Force, FA4803 20 CONS LGCA, Shaw Air Force Base, SC. Service Type... Angeles, CA. Contracting Activity: Dept of the Air Force, FA4610 30 CONS LGC, Vandenberg Air ] Force...

  8. Meisternäitleja / Jaan Tooming

    Index Scriptorium Estoniae

    Tooming, Jaan, 1946-

    2004-01-01

    Tuuakse esile meisternäitleja tunnuseid ja ollakse tänulik Eesti Muusikaakadeemia Kõrgema Lavakunstikooli 21. lennule, kellega oli rõõm koos teha G. B. Shaw "Tagasi Metuusala juurde" 5. osa "Mõtte piiridele"

  9. 75 FR 14585 - National Institute on Disability and Rehabilitation Research (NIDRR)-Disability and...

    Science.gov (United States)

    2010-03-26

    .... (2006). A model of successful work experience for employees who are visually impaired: The results of a... empowerment. Baltimore, MD: National Federation of the Blind. Shaw, A., Gold, E., & Wolffe, K....

  10. Kinokunsti tuleviku-uuringud Kiasmas / Rael Artel

    Index Scriptorium Estoniae

    Artel, Rael, 1980-

    2003-01-01

    Helsingi Kiasma Kaasaegse Kunsti Muuseumis on näitus tulevase kinokunsti tehnilistest võimalustest "Future Cinema. The Cinematic Imaginary after Film", mis on koostatud Karlsruhe Kunsti ja Meediatehnoloogia Keskuses (kuraatorid Jefferey Shaw ja Peter Weibel)

  11. Ain't We Never Gonna Study No Grammar?

    Science.gov (United States)

    Simmons, Eileen A.

    1991-01-01

    Describes the dilemmas involved with teaching Standard American English (SAE) while still accepting and not judging nonstandard dialects. Relates how the teacher used "Pygmalion" by George Bernard Shaw to show students why they needed to learn SAE. (PRA)

  12. Kaasaegseid maailmavaateid kohtulaua ees / Ants Oras

    Index Scriptorium Estoniae

    Oras, Ants

    2003-01-01

    Montgomery Belgioni raamatust "Our present philosophy of life", mis tutvustab Bernard Shaw', André Gide'i, Sigmund Freudi ja Bertrand Russelli filosoofilisi teooriaid. Varem ilmunud: "Looming", 1931, nr. 6, lk. 646-651

  13. Amyotrophic lateral sclerosis (ALS)

    Science.gov (United States)

    Lou Gehrig disease; ALS; Upper and lower motor neuron disease; Motor neuron disease ... 98. Shaw PJ. Amyotrophic lateral sclerosis and other motor neuron diseases. In: Goldman L, Schafer AI, eds. Goldman's Cecil ...

  14. On the finite-dimensional PUA representations of the Shubnikov space groups

    NARCIS (Netherlands)

    Broek, van den P.M.

    1977-01-01

    The finite-dimensional PUA epresentations of the Shubnikov space groups are discussed using the method of generalised induction given by Shaw and Lever. In particular we derive expressions for the calculation of the little groups.

  15. An Introduction to Support Vector Machines: A Review

    OpenAIRE

    Chen, Yiling; Councill, Isaac G.

    2003-01-01

    Review of "An Introduction to Support Vector Machines and Other Kernel-Based Learning Methods, Nello Cristianini and John Shawe-Taylor, New York, Cambridge University Press, 2000, 189 pp., $45, ISBN 0-521-78019-5.

  16. Diversity and Black Officer Integration in the U.S. Marine Corps for 2011 and Beyond

    Science.gov (United States)

    2011-05-06

    Press, 1986. Shaw , Jr., Henry I., and Ralph W. Dmmelly. Blacks in the Marine Corps. History and Museums Division, Headquarters Marine Corps...fightingforrespect.aspx Binkin, Martin, Mark J. Eitelberg, Alvin J. Schexnider, and Marvin M. Smith. Blacks and the Military: Studies in Defense Policy...192. 7 Henry I. Shaw , Jr. and Ralph W. Donnelly, Blacks in the Marine Corps (History and Museums Division, Headquarters Marine Corps, Washington

  17. Atmospheric Polarization Imaging with Variable Aerosols, Clouds, and Surface Albedo

    Science.gov (United States)

    2013-07-01

    record carefully calibrated all-sky images of vis-NIR polarization from the ground (Shaw et al. 2010), and we used data from that system and supporting...Polarization Imager (API) System In previous research we designed, built, and calibrated an all-sky polarization imager (API) instrument (Pust and Shaw...L. Pezzaniti, D. B. Chenault, and L. E. Roth, “Measured comparison of the crossover periods for mid- and long-wave IR (MWIR and LWIR ) polarimetric

  18. Catalyst for Change: The Department of Defense as a Forcing Function for the Whole-of-Government Approach

    Science.gov (United States)

    2011-05-24

    and Superman , (Cambridge, MA: The University Press, 1903), 165. 3 Carl von Clausewitz , On War, (New York: Knopf, 1993), 100. 1 Failing to understand...2008. Bloom, Harold. George Bernard Shaw’s Man and Superman . New York: Chelsea House, 1987. Brooks, D.A., and P.J. Candreva. “Whither the...Wake of War: Getting Serious About Nation-Building." The National Interest . (September 2005): 49-52. Shaw, George Bernard. Man and Superman

  19. Characterizing spatial and temporal reef fisheries in Chinchorro Bank Biosphere Reserve, northern Mesoamerican Reef System Caracterización espacial y temporal de la pesquería en la Reserva de la Biosfera Banco Chinchorro, norte del Sistema Arrecifal Mesoamericano

    OpenAIRE

    José Manuel Castro-Pérez; Gilberto Acosta González; Jesús Ernesto Arias-González

    2011-01-01

    The main objective of this paper was to create a baseline for the spatial and temporal characterization of fisheries in the Chinchorro Bank Biosphere Reserve. Monthly records of one of three fishing cooperatives in the area were taken between August 2004 and June 2005. The individual length and weight of each fish species were recorded per boat. Catch per unit effort (CPUE) was calculated as kilograms per fisherman per hour (kg-fisherman-1-hr-1). CPUE values for Epinephelus striatus, Mycterop...

  20. DIAGNÓSTICO PRENATAL INVASIVO AL FINAL DEL PRIMER TRIMESTRE: RESULTADOS DE UN ENSAYO INTERNACIONAL RANDOMIZADO (1) Philip J, Silver RK, Wilson RD, Thom EA, Zachary JM, Mohide P, Mahoney MJ, Simpson J L, Platt LD, Pergament E, Hershey D, Filkins K, Johnson A, Shulman LP, Bang J, MacGregor S, Smith JR, Shaw D, Wapner RJ, Jackson LG. For the NICHD EATA Trial Group. Obstet Gynecol 2004; 103(6): 1164-73.

    OpenAIRE

    González R,Christian; Vera,Claudio; Carvajal C,Jorge

    2004-01-01

    Objetivo: Determinar, en un ensayo aleatorizado, la seguridad y la exactitud de la amniocentesis y de la biopsia de vellosidades coriales (BVC) realizada entre las 11-14 semanas de gestación, dado que en este periodo es cada vez más relevante a la investigación temprana de las trisomias. Método: Se comparó amniocentesis con BVC a partir de los 77 a 104 días de gestación en un ensayo aleatorizado en una población materna predominantemente de edad avanzada. Antes de la randomización, la factibi...

  1. FLOTAC for diagnosis of endo-parasites in pet squirrels in southern Italy.

    Science.gov (United States)

    d'Ovidio, D; Rinaldi, L; Ianniello, D; Donnelly, T M; Pepe, P; Capasso, M; Cringoli, G

    2014-02-24

    The present study investigated the occurrence of endoparasites in pet squirrels in southern Italy. Fresh fecal samples were collected from 50 asymptomatic pet squirrels belonging to five different species (Callosciurus finlaysonii, n=6, C. prevosti, n=6; Tamias striatus, n=26, T. sibiricus, n=10; Sciurus carolinensis, n=2) housed both in pet shops and/or in private residences. All fecal samples were processed using the FLOTAC pellet technique to identify and count helminth eggs/larvae and protozoan cysts/oocysts. In addition, to detect Cryptosporidium spp. and Giardia spp. the samples were analyzed by the Remel Xpect(®) immunoassay. Helminth eggs were detected in 9 out of 50 squirrels. Specifically, eggs of Dicrocoelium dendriticum were found in 5 squirrels (C. finlaysonii, n=2; C. prevosti, n=2; T. striatus, n=1); eggs of the pinworm Syphacia spp. in 3 squirrels (C. prevosti, n=2; T. striatus, n=1); and eggs of gastrointestinal nematoda (Nippostrongylus-like) were found in 1 subject (C. prevosti). Finally, two squirrels (C. prevosti) had multiple parasitic infections with D. dendriticum and Capillaria hepatica, and with D. dendriticum and Strongyloides spp., respectively. None of the samples were positive for Cryptosporidium spp. or Giardia spp. or any other protozoa (e.g. Eimeria). To the authors' knowledge, this is the first report of a D. dendriticum natural infection in pet rodents.

  2. EOCENE LARGER FORAMINIFERAL BIOSTRATIGRAPHY IN THE SOUTHERNMOST DAUPHINOIS DOMAIN (MARITIME ALPS, FRANCE-ITALY BORDER

    Directory of Open Access Journals (Sweden)

    DARIO VARRONE

    2007-07-01

    Full Text Available The Trucco Formation and the Nummulitic Limestone (Dauphinois Domain, Maritime Alps are characterized by abundant larger foraminifera, specifically nummulitids, orthophragminids and encrusting foraminifera. In the Maritime Alps, previous studies suggest a late Lutetian age for the Trucco Formation and a late Lutetian-Priabonian age for the Nummulitic Limestone.Biostratigraphic analysis of the nummulitids, in 11 stratigraphic sections, allowed us to distinguish 3 biozones:MALF1 Zone: defined by the presence of Nummulites brongniarti d’Archiac & Haime, N. puschi d’Archiac, N. perforatus de Montfort, N. striatus (Bruguière, N. cf. dufrenoyi d’Archiac & Haime, N. variolarius/incrassatus and Operculina schwageri Silvestri.MALF2 Zone: defined by the presence of Nummulites perforatus de Montfort, N. striatus (Bruguière, N. cf. dufrenoyi d’Archiac & Haime, N. variolarius/incrassatus and Operculina schwageri Silvestri.MALF 3 Zone: defined by the presence of gr. Nummulites variolarius/incrassatus, N. striatus (Bruguière and Operculina schwageri Silvestri.According to current larger foraminiferal biozonal schemes, the age of these local biozones corresponds to the Bartonian p.p.Moreover, the comparison with biostratigraphic schemes established for the Dauphinois Domain and for the Tethyan area evidences that several typical nummulitid species of the late Bartonian are lacking in the southern Dauphinois Domain, probably due to a paleogeographic control. 

  3. The effects of natural disturbances, reef state, and herbivorous fish densities on ciguatera poisoning in Rarotonga, southern Cook Islands.

    Science.gov (United States)

    Rongo, Teina; van Woesik, Robert

    2013-03-15

    Ciguatera poisoning is a critical public-health issue among Pacific island nations. Accurately predicting ciguatera outbreaks has become a priority, particularly in Rarotonga in the southern Cook Islands, which has reported the highest incidence of ciguatera poisoning globally. Since 2006, however, cases of ciguatera poisoning have declined, and in 2011 ciguatera cases were the lowest in nearly 20 years. Here we examined the relationships between cases of ciguatera poisoning, from 1994 to 2011, and: (i) coral cover, used as a proxy of reef state, (ii) the densities of herbivorous fishes, and (iii) reef disturbances. We found that coral cover was not a good predictor of cases of ciguatera poisoning, but high densities of the herbivorous fish Ctenochaetus striatus and reef disturbances were both strong predictors of ciguatera poisoning. Yet these two predictors were correlated, because the densities of C. striatus increased only after major cyclones had disturbed the reefs. Since 2006, the number of cyclones has decreased considerably in Rarotonga, because of the climatic shift toward the negative phase of the Pacific Decadal Oscillation. We suggest that fewer cyclones have led to decreases in both the densities of C. striatus and of the number of reported cases of ciguatera poisoning in Rarotonga.

  4. The Effects of Algal Turf Sediments and Organic Loads on Feeding by Coral Reef Surgeonfishes

    Science.gov (United States)

    Goatley, Christopher H. R.; Bellwood, David R.

    2017-01-01

    Herbivorous and detritivorous fishes interact closely with the epilithic algal matrix (EAM) on coral reefs. While sediment and organic detrital loads within the EAM might influence this interaction, the responses of functionally distinct fishes to changing sediment and organic loads have not been investigated. Aquarium based feeding trials were performed to assess how different sediment and organic loads affected feeding by the highly abundant surgeonfishes, Ctenochaetus striatus, a detritivore, and Acanthurus nigrofuscus, a herbivore. C. striatus were highly sensitive to even small increases in sediment loads (of just 75 g m-2), displaying a significant decline in feeding rates as sediment loads increased. Although C. striatus is a specialised detritivore, changing organic loads had no effect and suggests that selection of feeding surfaces is primarily mediated by total sediment loads rather than organic loads. By contrast, A. nigrofuscus displayed no changes to its feeding behaviour regardless of sediment or organic load. These findings highlight the complex, species-specific way that sediments may mediate key ecological processes on coral reefs. PMID:28046102

  5. The concerted contribution of the S4-S5 linker and the S6 segment to the modulation of a Kv channel by 1-alkanols.

    Science.gov (United States)

    Bhattacharji, Aditya; Kaplan, Benjamin; Harris, Thanawath; Qu, Xiaoguang; Germann, Markus W; Covarrubias, Manuel

    2006-11-01

    Gating of voltage-gated K(+) channels (K(v) channels) depends on the electromechanical coupling between the voltage sensor and activation gate. The main activation gate of K(v) channels involves the COOH-terminal section of the S6 segment (S6-b) and the S4-S5 linker at the intracellular mouth of the pore. In this study, we have expanded our earlier work to probe the concerted contribution of these regions to the putative amphipathic 1-alkanol site in the Shaw2 K(+) channel. In the S4-S5 linker, we found a direct energetic correlation between alpha-helical propensity and the inhibition of the Shaw2 channel by 1-butanol. Spectroscopic structural analyses of the S4-S5 linker supported this correlation. Furthermore, the analysis of chimeric Shaw2 and K(v)3.4 channels that exchanged their corresponding S4-S5 linkers showed that the potentiation induced by 1-butanol depends on the combination of a single mutation in the S6 PVPV motif (PVAV) and the presence of the Shaw2 S4-S5 linker. Then, using tandem-heterodimer subunits, we determined that this potentiation also depends on the number of S4-S5 linkers and PVAV mutations in the K(v) channel tetramer. Consistent with the critical contribution of the Shaw2 S4-S5 linker, the equivalent PVAV mutation in certain mammalian K(v) channels with divergent S4-S5 linkers conferred weak potentiation by 1-butanol. Overall, these results suggest that 1-alkanol action in Shaw2 channels depends on interactions involving the S4-S5 linker and the S6-b segment. Therefore, we propose that amphiphilic general anesthetic agents such as 1-alkanols may modulate gating of the Shaw2 K(+) channel by an interaction with its activation gate.

  6. General anesthetic action at an internal protein site involving the S4-S5 cytoplasmic loop of a neuronal K(+) channel.

    Science.gov (United States)

    Harris, T; Shahidullah, M; Ellingson, J S; Covarrubias, M

    2000-02-18

    The structural bases of general anesthetic action on a neuronal K(+) channel were investigated using the series of homologous 1-alkanols, electrophysiology, and mutational analysis. Domain swapping between dShaw2 (alkanol-sensitive) and hKv3.4 (alkanol-resistant) and site-directed mutagenesis demonstrated that a 13-amino acid cytoplasmic loop (S4-S5) determines the selective inhibition of native dShaw2 channels by 1-alkanols. The S4-S5 loop may contribute to a receptor for both 1-alkanols and the inactivation particle, because the enhanced 1-alkanol sensitivity of hKv3.4 channels hosting S4-S5 mutations correlates directly with disrupted channel inactivation. Evidence of a discrete protein site was also obtained from the analysis of the relationship between potency and alkyl chain length, which begins to level off after 1-hexanol. Rapid application to the cytoplasmic side of inside-out membrane patches shows that the interaction between dShaw2 channels and 1-alkanols equilibrates in 1000-fold slower when the drug is applied externally to outside-out membrane patches. The data strongly favor a mechanism of inhibition involving a discrete internal site for 1-alkanols in dShaw2 K(+) channels. A new working hypothesis proposes that 1-alkanols lock dShaw2 channels in their closed conformation by a direct interaction at a crevice formed by the S4-S5 loop.

  7. Step-emulsification in nanofluidic device

    CERN Document Server

    Li, Z; Pismen, L M; Tabeling, P

    2014-01-01

    In this paper we present a comprehensive study of the step-emulsification process for high-throughput production of (sub-)$\\mu$m-size monodisperse droplets. The microfluidic device combines a Hele-Shaw nanofluidic cell with a step-like outlet to a deep and wide reservoir. The proposed theory based on Hele-Shaw hydrodynamics provides the quasi-static shape of the free boundary between the disperse liquid phase engulfed by the co-flowing continuous phase prior to transition to oscillatory step-emulsification at low enough capillary number. At the transition the proposed theory anticipates a simple condition for critical capillary number as a function of the Hele-Shaw cell geometry. The transition threshold is in excellent agreement with experimental data. A simple closed-form expression for the size of the droplets generated in step-emulsification regime derived using simple geometric arguments also shows a very good agreement with the experimental results.

  8. The anisotropy of the surface tension at the magnetic-field-induced phase transformations

    CERN Document Server

    Cebers, A

    2002-01-01

    The surface properties of the magnetic colloid phases arising at the magnetic-field-induced phase separation in the Hele-Shaw cell are considered. By the numerical resolution of the equation for the concentration distribution in the transition layer between the phases, the anisotropy of the surface tension is calculated. The anisotropic shapes of the droplets of the concentrated phase are found by the Wulff construction and are compared with that obtained by the numerical simulation of the kinetics of the magnetic colloid phase separation in the Hele-Shaw cell.

  9. Analysis of United States Air Forces Central Government Purchase Card Reachback Viability

    Science.gov (United States)

    2011-12-01

    Kiser HQ ACC – A7/K Langley AFB, VA 7. Col Marvin Smith HQ AFCENT – A7 Shaw AFB, SC 8. Lt Col Timothy Hawkins Naval Postgraduate School...Colonel Marvin Smith – for providing the necessary resources for us to go on the PMA trip • Colonel Scott Kiser – for selecting us to accompany Maj...closest to the originating location of the supply chain, which is usually in the contiguous United States. USAFCENT, based out of Shaw Air Force Base

  10. Individuality, narcissism and the bipolar self.

    Science.gov (United States)

    Bragan, K

    1990-12-01

    Oscar Wilde and George Bernard Shaw are introduced as great exponents of the cult of individuality and as providing examples of the two poles of the self as defined by Kohut. Wilde's need for mirroring, and his use of defensive strategies to support the self, is contrasted with Shaw's compensatory use of idealization to create a strong and stable self. While acknowledging the way self psychology can explain some aspects of the personalities of these great men, it is also suggested that it does not explain all, and in particular does not explain the economic aspect. Questions about the latter are raised in conclusion.

  11. The Use of the Skew T, Log P Diagram in Analysis and Forecasting. Revision

    Science.gov (United States)

    1990-03-01

    Lape Rts withe Time. 5-11 of the penetrative-convection effect on the i//lapse rate. For this reason, when Sir Napier SToShaw popularized the...originally envisaged by their authors. Most textbooks Using the ideas of Sir Napier Shaw, Normand still present these methods as their origi- visualized the...analysis to sion. Figure 64 shows an analysis of the find probable cloud areas does not itldicate 500-mb dew-point- depression field, super - clouds above or

  12. The Doctor's Dilemma: Oranges or Apples?

    Directory of Open Access Journals (Sweden)

    Norman L Jones

    2000-01-01

    Full Text Available George Bernard Shaw's famous play, Doctor's Dilemma (1, is one of the attractions at the Shaw Festival this year, and recently we went to see it on a beautiful Niagara summer day, followed by a picnic beside Ball's Falls. Several weeks earlier, I had decided to read the play, with its 80-page "Preface on Doctors", and was prepared for an anticlimactic experience on the day. However, the production was a delight and I gained additional insights from the live performance.

  13. Water-quality trading: Can we get the prices of pollution right?

    Science.gov (United States)

    Konishi, Yoshifumi; Coggins, Jay S.; Wang, Bin

    2015-05-01

    Water-quality trading requires inducing permit prices that account properly for spatially explicit damage relationships. We compare recent work by Hung and Shaw (2005) and Farrow et al. (2005) for river systems exhibiting branching and nonlinear damages. The Hung-Shaw scheme is robust to nonlinear damages, but not to hot spots occurring at the confluence of two branches. The Farrow et al. (2005) scheme is robust to branching, but not to nonlinear damages. We also compare the two schemes to each other. Neither dominates from a welfare perspective, but the comparison appears to tilt in favor of the Farrow et al. scheme.

  14. Comparative analysis of free and scuba diving for benthopelagic and cryptic fish species associated with rocky reefs

    Directory of Open Access Journals (Sweden)

    Rodolfo Gutterres Giordano

    2014-05-01

    Full Text Available This work aimed to assess, through experimental comparisons between free and scuba diving performed in Arraial do Cabo city, RJ, Brazil, the abundances of Scartella cristata e Chaetodon striatus -two reef fish species of contrasting behaviors- in different depth layers of sheltered and exposed rocky reefs. C. striatus was homogeneously distributed through all the depth strata (0-10 m and scuba diving should be preferred over free diving to assess the abundance of this species at exposed rocky shores, undergoing continuous effects of waves and winds. Both free and scuba diving can be used indistinctly and with no data biases to appraise the abundances of C. striatus in non-turbulent reefs or in shallow zones (i.e., ≤ 5 m of exposed reefs, and, for S. cristata, in all depth layers (i.e., up to 10 m of both sheltered and exposed reefs. Although the abundances of S. cristata did not significantly differ between free and scuba diving, contrasting with most previous studies that stressed the risk of the first method to underestimate the abundance of small and cryptic species, it should be considered that the previous experience of the diver and the nature of our study (i.e., focused specifically on a cryptic species may have contributed to our findings. Further studies are, however, necessary to test our findings in different conditions (i.e., depths, hydrodynamic characteristics, and habitat complexity and for other tropical reef fish species, in order to increase the truthfulness of underwater visual census and reduce the risk of failure of fish conservation and management programs potentially based on biased data.

  15. Vulvar and Perianal Condyloma Superimposed Inflammatory Linear Verrucous Epidermal Nevus: A Case Report and Review of the Literature

    Directory of Open Access Journals (Sweden)

    Sümeyra Nergız Avcioğlu

    2013-01-01

    Full Text Available Inflammatory linear verrucous epidermal nevus (ILVEN is a benign cutaneous hamartoma characterized by intensely erythematous, pruritic, and inflammatory papules that occur as linear bands along the lines of Blaschko. There is a considerable clinical and histological resemblance between ILVEN and linear psoriasis, lichen striatus, linear lichen planus, and invasion of epidermal nevus by psoriasis. The pathogenesis of ILVEN is unknown. It is regarded as a genetic dyskeratotic disease reflecting genetic mosaicism. Here, a case of vulvar and perianal condyloma superimposed ILVEN is presented.

  16. 中国海南线纹芋螺的新O-超家族芋螺毒素

    Institute of Scientific and Technical Information of China (English)

    卢柏松; 于芳; 王建华; 赵四清; 赵东; 戴秋云; 黄培堂; 黄翠芬

    1999-01-01

    采用快速扩增3′cDNA末端(RACE,Rapid Amplification of cDNA Ends)的方法,对我国海南产线纹芋螺(Conus striatus)芋螺毒素的cDNA进行了分析.结果从中发现了6种新的O-超家族芋螺毒素序列.其中一种毒素与已知的MVIIA(N型钙离子通道的拮抗剂)呈高度的序列同源性.

  17. AcEST: DK946455 [AcEST

    Lifescience Database Archive (English)

    Full Text Available ss-Prot (release 56.9) Link to BlastX Result : Swiss-Prot sp_hit_id Q4PS77 Definition sp|Q4PS77|MTG1_BOVIN M............done Score E Sequences producing significant alignments: (bits) Value sp|Q4PS77|MTG1_BOVIN Mitochon...3 OS=Conus striatus PE=2 SV=1 30 4.9 sp|Q5IJ48|CRUM2_HUMAN Crumbs homolog 2 OS=Homo sapiens GN=CRB2 P... 29 8.3 >sp|Q4PS

  18. Interface dermatitis

    Directory of Open Access Journals (Sweden)

    Rajiv Joshi

    2013-01-01

    Full Text Available Interface dermatitis includes diseases in which the primary pathology involves the dermo-epidermal junction. The salient histological findings include basal cell vacuolization, apoptotic keratinocytes (colloid or Civatte bodies, and obscuring of the dermo-epidermal junction by inflammatory cells. Secondary changes of the epidermis and papillary dermis along with type, distribution and density of inflammatory cells are used for the differential diagnoses of the various diseases that exhibit interface changes. Lupus erythematosus, dermatomyositis, lichen planus, graft versus host disease, erythema multiforme, fixed drug eruptions, lichen striatus, and pityriasis lichenoides are considered major interface diseases. Several other diseases (inflammatory, infective, and neoplastic may show interface changes.

  19. "Speak Out. Act Up. Move Forward." Disobedience-Based Arts Education

    Science.gov (United States)

    Kotin, Alison; Aguirre McGregor, Stella; Pellecchia, DeAnna; Schatz, Ingrid; Liu, Shaw Pong

    2013-01-01

    In this essay, Alison Kotin, Stella Aguirre McGregor, DeAnna Pellecchia, Ingrid Schatz, and Shaw Pong Liu reflect on their experiences working with public high school students to create "Speak Out. Act Up. Move Forward.," a performative response to current and historical acts of civil disobedience. The authors--a group of instructors…

  20. Tree-ring history of Swiss needle cast impact on Douglas-fir growth in western Oregon: Correlations with climate variables

    Science.gov (United States)

    The fungal pathogen, Phaeocryptopus gaeumannii, occurs wherever Douglas-fir is found but disease damage is believed to be limited to the Coast Range and is of no concern outside the coastal fog zone (Shaw et al., 2011). However, knowledge remains limited on the history and spati...

  1. Gender, British Administration and Mission Management of Education in Zambia 1900-1939

    Science.gov (United States)

    Allen, Julia

    2010-01-01

    This article discusses the impact of including gender in the analytical framework in a study of the management and provision of education in Zambia from 1900 to 1939. It shows that a focus on gender allows females to enter the historical narrative and the leadership of women such as Mabel Shaw, Hannah Frances Davidson and Julia Smith can be given…

  2. Coding interview questions concepts, problems, interview questions

    CERN Document Server

    Karumanchi, Narasimha

    2016-01-01

    Peeling Data Structures and Algorithms: * Programming puzzles for interviews * Campus Preparation * Degree/Masters Course Preparation * Instructor’s * GATE Preparation * Big job hunters: Microsoft, Google, Amazon, Yahoo, Flip Kart, Adobe, IBM Labs, Citrix, Mentor Graphics, NetApp, Oracle, Webaroo, De-Shaw, Success Factors, Face book, McAfee and many more * Reference Manual for working people

  3. Retrospect

    Science.gov (United States)

    Weaver, Anthony

    1971-01-01

    A collection of essays on education printed in The New Era during the 1920-1930 era and written by: Beatrice Ensor, A. S. Neill, G. Bernard Shaw, Adolphe Ferriere, C. G. Jung, Martin Buber, Alfred Adler, Harold Rugg, Ovide Decroly, and Paul Langevin. (SE)

  4. Eesti fenomen Alexanderi tehnika maailmas / Aivi Parijõgi

    Index Scriptorium Estoniae

    Parijõgi, Aivi, 1967-

    2007-01-01

    Alexanderi tehnikast. 2006. aastal EMTA lavakunstikoolis Alexanderi tehnika looja Frederick Matthias Alexander'i sünnipäeva (20.01) puhul toimunud workshopist. Vestlusringis osalevad EMTA Lavakunstikoolis Alexanderi tehnikat õpetav Maret Mursa Tormis, näitleja ja laulja Kärt Tomingas, pedagoog Celia Roose ning Alexanderi tehnika õpetajad mujalt - Dorothea Magonet, Steven Shaw, Masoumeh Atabaki Melrose, Ken Thompson

  5. Lieve Dr. Jacobs. Brieven uit de Wereldbond voor Vrouwenkiesrecht, 1902-1942

    NARCIS (Netherlands)

    Bosch, Mineke; Kloosterman, Annemarie

    1985-01-01

    In 1904 werd te Berlijn de Wereldbond voor vrouwenkiesrecht opgericht. Door middel van een selectie uit de brieven van toonaangevende vrouwen t.w. Aletta Jacobs, Rosa Manus, Carrie Chapman Catt, Anna Howard Shaw en Rosik Schwimmer, worden het ontstaan, de achtergronden en de geschiedenis van deze in

  6. Science Is the First Step to Siting Nuclear Waste Repositories

    Science.gov (United States)

    Neuzil, C. E.

    2014-02-01

    As Shaw [2014] notes, U.S. research on shale as a repository host was halted before expending anything close to the effort devoted to studying crystalline rock, salt, and—most notably—tuff at Yucca Mountain. The new political reality regarding Yucca Mountain may allow reconsideration of the decision to abandon research on shale as a repository host.

  7. Review Commentary: Towards a Deeper Understanding of 'European Citizenship'

    Directory of Open Access Journals (Sweden)

    Thomas Pfister

    2010-05-01

    Full Text Available This short revireview commentary discusses three recent contributions on citizenship and European integration: Kostakopoulou, D. (2008. The Future Governance of Citizenship. Cambridge: Cambridge University Press. Maas, W. (2007. Creating European Citizens. Lanham, MD: Rowman & Littlefield. Shaw, J. (2007. The Transformation of Citizenship in the European Union: Electoral Rights and the Restructuring of Political Space. Cambridge: Cambridge University Press.

  8. Development of a Design Tool for Planning Aqueous Amendment Injection Systems

    Science.gov (United States)

    2012-08-01

    provided by Andrea Leeson (Environmental Restoration Program Manager), Hans Stroo (ESTCP reviewer), Marvin Unger (ESTCP reviewer), and the many long...Pohlmann, Shaw Group, Inc. • Eliot Cooper, Vironex, Inc. • Erica Becvar, Air Force Center for Environmental Engineering • Fritz Krembs, TriHydro

  9. Performance Results for the Optical Turbulence Reduction Cavity (Postprint)

    Science.gov (United States)

    2008-12-01

    DR. RYAN F. SCHMIT, Aerospace Engineer MARVIN C. GRIDLEY, Acting Chief Aerospace Vehicle Integration and Aerospace Vehicle Integration and...Many studies including Heller and Bliss,3 Kaufman and Clark,4 Shaw et al.,5 Sarno and Franke6 have examined zero-frequency devices like spoilers to

  10. Air and Space Power Journal. Volume 23, Number 3, Fall 2009

    Science.gov (United States)

    2009-01-01

    Darren K. Stanford Deputy Chief, Professional Journals Capt Lori Katowich Professional Staff Marvin W. Bassett, Contributing Editor Darlene H...Gunter Annex), Arnold (TN), Charleston (SC), Shaw (SC), Pope (NC), and Seymour Johnson (NC). 15. The adduced states include Maine, New Hampshire...Deputy Chief, Professional Journals Capt Lori Katowich Professional Staff Marvin W. Bassett, Contributing Editor Darlene H. Barnes, Editorial Assistant

  11. Veliki teatr s kroshetshnõm zalom / Boris Tuch

    Index Scriptorium Estoniae

    Tuch, Boris, 1946-

    2007-01-01

    3.-6. märtsini Tallinnas toimuvatest Moskva teatri Pjotr Fomenko Meistriklass külalisetendustest. Esitatakse lavastused "Perekondlik õnn" Lev Tolstoi romaani järgi Pjotr Fomenko lavastuses ja George Bernard Shaw' "Südametemurdumise maja" Jevgeni Kamenkovitshi lavastuses

  12. From the Andes to the Hindu Kush: Columbian Airpower Lessons for Afghanistan

    Science.gov (United States)

    2010-05-20

    81 Nadir Shaw in 1930 was quite brutal in general and used airpower to put down Afghans in Kohistan.82 After the relatively peaceful ―golden age‖ of...Leavenworth: United States Army Command and General Staff College, 1996. Pugmire, Marvin S., Lt Col. Unconventional Airmen: Present and Future

  13. Experiences of Faculty of Color Teaching in a Predominantly White University: Fostering Interracial Relationships among Faculty of Color and White Preservice Teachers

    Science.gov (United States)

    Han, Keonghee Tao

    2012-01-01

    In this study, I recount my experiences teaching elementary literacy methods courses and interacting with my racial Others--my White preservice teachers/students, senior faculty, and administrators at a predominantly White university in the rural Mountain West. Using an ethnographic approach (Emerson, Fretz, & Shaw, 1995), I analyzed students'…

  14. Effects of Repetition on Associative Recognition in Young and Older Adults: Item and Associative Strengthening

    Science.gov (United States)

    2010-01-01

    Cabeza , 2009). Second, neuroimaging studies have consistently shown increased recruitment of medial and left PFC regions when retrieval is particularly...demanding, for instance when recovering contextual associations (Buchler, Dobbins, & Cabeza , 2008; Dobbins, Foley, Schacter, & Wagner, 2002; Nolde...familiarity and recollection (Daselaar, Fleck, & Cabeza , 2006; Diana, Yonelinas, & Ranga- nath, 2007; Yonelinas, Otten, Shaw, & Rugg, 2005), and further- more

  15. The Kindness of Strangers

    Institute of Scientific and Technical Information of China (English)

    SAM; GOFFMAN

    2009-01-01

    The boy was six years old and he hated me. He sat on the opposite side of the rickshaw, grasping his mother tightly as he screamed and cried. The rick shaw driver looked back at us as he navi gated the winding alleyways on the outskirts of Huai’an, a small city in north Jiangsu

  16. Defense Infrastructure: Improved Guidance Needed for Estimating Alternatively Financed Project Liabilities

    Science.gov (United States)

    2013-04-01

    Housing Air Force Shaw AFB SC Privatized Housing Air Force Sheppard AFB TX Privatized Housing Air Force Tinker AFB OK Privatized Housing...Putansu; Christopher Ralphs; Chris Turner; Michael Willems; and Erik Wilkins McKee made key contributions to this report. Appendix IV: G O

  17. Influence of Wildland Fire on the Recovery of Endangered Plant Species Study Project.

    Science.gov (United States)

    1995-10-01

    mint family ( Lamiaceae ). It is the last remaining extant member of the genus and is only found at PTA and the Parker Ranch. Shaw (1995) estimated that...and stoloniferous perennial plant. It also belongs to the mint family ( Lamiaceae ) and is found over much of the west side of PTA and at several

  18. Interfaces in Composites. Volume 170. Materials Research Society Symposium Proceedings Held in Boston, Massachusetts on 27-29 November 1989

    Science.gov (United States)

    1990-11-21

    Ludwig Rebenfeld, Comp. Sl. Tech. 2L 17 (1987). 2. Umesh Gaur and Bernard Miller, Coap . Sci. Tech. 3M, 35 (1989). 3. Lynn S. Penn and Shaw M. Lee, J...the state of stress applied in most composite testing protocols , a single fiber method was selected to evaluate adhesion at the fiber-matrix interphase

  19. Disease: H01074 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available uinolones [ATC:J01MA J01MB] Tetracyclines [ATC:J01AA] PMID:21163298 (description, env_factor) Parker JL, Shaw JG Aeromonas spp. clini...cal microbiology and disease. J Infect 62:109-18 (2011)

  20. Finance and Growth: A Survey of the Theoretical and Empirical Literature

    NARCIS (Netherlands)

    F.W. Eschenbach

    2004-01-01

    textabstractThis paper reviews the theoretical and empirical literature on links between domestic financial development and economic growth. It starts with the pioneers in this field and then classifies two main schools favouring liberal financial regimes. First McKinnon and Shaw advocated financial

  1. A Review on My Fair Lady

    Institute of Scientific and Technical Information of China (English)

    黄薇

    2011-01-01

    George Bernard Shaw, who won the Nobel Prize in Literature in 1925, is an outstanding Irish playwright. Many of his works are adapted into movies, and are quite popular among people worldwide. One of his comedies Pygmalion was adapted into a Hollywood mov

  2. The Lion and the Lady Revisited: Another Look at the Firing of Mary L. Jones as Los Angeles Public Librarian in 1905.

    Science.gov (United States)

    Wiegand, Wayne A.

    1983-01-01

    Recounts events that led to the firing of Mary L. Jones, Director of Los Angeles Public Library (1905) and caught in public crossfire such figures as the mayor, city council, library board of directors, Charles Lummis (Jones's replacement), Susan B. Anthony, Anna Shaw, Herbert Putnam, and Melvil Dewey. (29 references) (EJS)

  3. A Watershed Modeling System for Fort Benning, GA Using the US EPA BASINS Framework

    Science.gov (United States)

    2013-01-01

    in a degraded desert ecosystem in Kuwait . Journal of Arid Environments 2001; 49:413-427. [38] Wilson S. The effects of military tank traffic on...vegetation cover on surface soil disturbance by tracked vehicles. Journal of Terramechanics 1993; 30(4):299- 311. [40] Milchunas DG, Schulz KA , Shaw

  4. Uudiseid maailmast / Nele-Eva Steinfeld

    Index Scriptorium Estoniae

    Steinfeld, Nele-Eva

    2013-01-01

    Lühisõnumeid muusikamaailmast: Peterburis avati Maria teatri uus maja. Sir Colin Davis, Janos Starker lahkunud. Pulitzeri muusikapreemia pälvis Caroline Shaw. Uus ooperiauhind.Bach 32 GB mälupulgal. Muusikud võivad taas pille lennukisse võtta

  5. 76 FR 20606 - Proposed Flood Elevation Determinations

    Science.gov (United States)

    2011-04-13

    ....; Reorganization Plan No. 3 of 1978, 3 CFR, 1978 Comp., p. 329; E.O. 12127, 44 FR 19367, 3 CFR, 1979 Comp., p. 376... Yakima. Walmart Overflow 1. Creek confluence. Approximately 1,307 None +1158 feet upstream of South 64th Avenue. Shaw Creek--Wide Hollow Creek At the Wide Hollow None +1149 City of Yakima. Walmart Overflow...

  6. 77 FR 54920 - Center for Scientific Review; Notice of Closed Meetings

    Science.gov (United States)

    2012-09-06

    ... Prosthetics R&D. Date: October 2, 2012. Time: 12 p.m. to 1 p.m. Agenda: To review and evaluate grant..., (Telephone Conference Call). Contact Person: Jane A Doussard-Roosevelt, Ph.D., Scientific Review Officer... Shaw, Ph.D., Scientific Review Officer, Center for Scientific Review, National Institutes of...

  7. Perturbation theory for intermolecular forces including exchange

    NARCIS (Netherlands)

    Lekkerkerker, H.N.W.; Laidlaw, W.G.

    1970-01-01

    Generalized solutions to the Kisenschitz and London perturbation equations are derived. It is pointed out that the results obtained in the formalisms proposed by Hirschfelder (HAV), by Hirschfelder and Silbey, by Murrell and Shaw, and by Musher and Amos are special cases of the generalized treatment

  8. The Global Positioning System for Military Users: Current Modernization Plans and Alternatives

    Science.gov (United States)

    2011-10-01

    signal was transmitted at 1575.42 MHz. 8. Michael Shaw, Kanwaljit Sandhoo, and David Turner, “Modern- ization of the Global Positioning System” (paper...the Foucault pendulum but uses a vibrating element, known as a Micro Electro-Mechanical System, instead of an actual pendulum. iGPS Module. The

  9. 77 FR 65208 - Notice of Consideration of Approval of Application Regarding Proposed Indirect Transfer of...

    Science.gov (United States)

    2012-10-25

    ... March 25, 2005. The CA was modified in 2006, to change the name of the CA holder to Shaw AREVA MOX Services (MOX Services) (ADAMS Accession No. ML063110298). Under the CA, MOX Services is now constructing a... Aiken, South Carolina. MOX Services has separately requested the NRC's authorization to operate the...

  10. The Mexican Axolotl in Schools

    Science.gov (United States)

    Thomas, R. M.

    1976-01-01

    Suggests and describes laboratory activities in which the Mexican axolotl (Ambystoma mexicanum Shaw) is used, including experiments in embryology and early development, growth and regeneration, neoteny and metamorphosis, genetics and coloration, anatomy and physiology, and behavior. Discusses care and maintenance of animals. (CS)

  11. Orientals and Orientalists

    DEFF Research Database (Denmark)

    Reade, Julian

    2004-01-01

    Reviews three books on archaeology. "Possessors and Possessed: Museums, Archaeology, and the Visualization of History in the Late Ottoman Empire," by Wendy M. K. Shaw; "Orientalism and Visual Culture: Imagining Mesapotamia in Nineteenth-Century Europe," by Frederick N. Bohrer; "Empires of the Plain...

  12. Summary of Research Activities Academic Departments 1981-1982.

    Science.gov (United States)

    1982-10-01

    Cymbeline Via Mozart , Dickens, and Shaw." The article will examine the parallels between the author’s vision of himself as creator in his artistic...theological idea, namely El gran teatro del mundo, La vida es suefio, and La cena de Baltasar. It will include the relation- ships between verbal and non

  13. Command and Control of the U.S. Tenth Army During the Battle of Okinawa

    Science.gov (United States)

    2009-06-12

    30 Appleman, et al, 498. 31 Nichols and Shaw, 271. 32 Ibid., 261. 33 Ibid., 263. 34 Craig M. Cameron, American Samurai : Myth, Imagination...Annapolis: Naval Institute Press, 1987. Cameron, Craig M. American Samurai : Myth, Imagination, and the Conduct of Battle of the First Marine

  14. Proceedings of the Annual Mechanics of Composites Review (8th) Held at Wright-Patterson AFB, Ohio on 5-7 October 1982.

    Science.gov (United States)

    1983-04-01

    and I. Sheinman , Georgia Institute of Technology 0910-0950 RESEARCH INTO THE DESIGN TECHNOLOGY OF ADVANCED COMPOSITES: 292 P. Lagace and J. Dugundji...IMPERFECTION SENSITIVITY OF FIBER-REINFORCED, COMPOSITE, THIN CYLINDERS G. Simitses, D. Shaw and I. Sheinman , Georgia Institute of Technology The

  15. Embankment Dams on Permafrost. Design and Performance Summary, Bibliography and an Annotated Bibliography.

    Science.gov (United States)

    1987-07-01

    Laboratory, Translation 626. Sheinman , L.B. (1980) Hydroelectric power plants in the Baykal Amur rail- road area (in Russian). Energiia, Moscow...1963) Savarenskii, F.P. (1950) *Semenov, N.G. (1967) *Sereda, V.A. (1959) Shaposhnikov, M.A. and V.D. Sokolov (1968) Shaw, R.F. (1976) Sheinman , L.B

  16. Laser Densification and Doping of Sol-Gel Glasses

    Science.gov (United States)

    1992-02-29

    meeting, Keswick, Aug. 1990. 4. A. Charlton, M. A. Meneses -Nava, D. J. Shaw and T. A. King "Gel-silica lasers and optics", Proc. 4th OGAMM meeting, 105...I. T. McKinnie, M. A. Meneses -Nava and T. A. King "A tunable visible solid state laser" J. Mod. Opt. 39, 1992.

  17. Defining the Role of Autophagy Kinase ULK1 Signaling in Therapeutic Response of Tuberous Sclerosis Complex to mTOR Inhibitors

    Science.gov (United States)

    2014-04-01

    present Salk Academic Council 2008-2011 Administered postdoctoral fellow training grant in Salk Helmsley Nutritional Genomics program... ancient sensor for ancient drug. Science 336: 813-4. 8. Shaw, R.J. and Cantley, L.C. (2012) Decoding key nodes in the metabolism of cancer cells: sugar

  18. 77 FR 25538 - Quarterly Publication of Individuals, Who Have Chosen To Expatriate

    Science.gov (United States)

    2012-04-30

    ... SALEH SULIMAN ETRAD FARMER STEPHEN GEORGE FINKELSTEIN NATHAN GARY FISCHER BERNHARD BALTHASAR FISLER... ERIKSRUD GRAHAM SR JAMES MICHAEL GRAWE KIMBERLY LUISA GREEN ELLEN HUGHES GRETER SUZANNE BEATRICE GRIEDER... ELIE GUJRAL RAGNINI GUJRAL VISHAL GUTOWSKI JANET ANN GWON KYUNG HEE HACKETT WILLIAM SHAW HADLEY...

  19. Geothermal resource assessment of western San Luis Valley, Colorado

    Energy Technology Data Exchange (ETDEWEB)

    Zacharakis, Ted G.; Pearl, Richard Howard; Ringrose, Charles D.

    1983-01-01

    The Colorado Geological Survey initiated and carried out a fully integrated assessment program of the geothermal resource potential of the western San Luis Valley during 1979 and 1980. The San Luis Valley is a large intermontane basin located in southcentral Colorado. While thermal springs and wells are found throughout the Valley, the only thermal waters found along the western part of the Valley are found at Shaw Warm Springs which is a relatively unused spring located approximately 6 miles (9.66 km) north of Del Norte, Colorado. The waters at Shaws Warm Spring have a temperature of 86 F (30 C), a discharge of 40 gallons per minute and contain approximately 408 mg/l of total dissolved solids. The assessment program carried out din the western San Luis Valley consisted of: soil mercury geochemical surveys; geothermal gradient drilling; and dipole-dipole electrical resistivity traverses, Schlumberger soundings, Audio-magnetotelluric surveys, telluric surveys, and time-domain electro-magnetic soundings and seismic surveys. Shaw Warm Springs appears to be the only source of thermal waters along the western side of the Valley. From the various investigations conducted the springs appear to be fault controlled and is very limited in extent. Based on best evidence presently available estimates are presented on the size and extent of Shaw Warm Springs thermal system. It is estimated that this could have an areal extent of 0.63 sq. miles (1.62 sq. km) and contain 0.0148 Q's of heat energy.

  20. DMPD: NOD-like receptors (NLRs): bona fide intracellular microbial sensors. [Dynamic Macrophage Pathway CSML Database

    Lifescience Database Archive (English)

    Full Text Available 18585455 NOD-like receptors (NLRs): bona fide intracellular microbial sensors. Shaw...tml) (.csml) Show NOD-like receptors (NLRs): bona fide intracellular microbial sensors. PubmedID 18585455 Ti...tle NOD-like receptors (NLRs): bona fide intracellular microbial sensors. Authors

  1. The Fate of the Dinosaur.

    Science.gov (United States)

    Cummings, Martin M.

    The National Library of Medicine (NLM) had its beginnings in the Library of the Army Surgeon General's office established in 1836. Dr. John Shaw Billings, who was in charge from 1865 to 1895, greatly influenced the growth of the library and also initiated production of the widely used "Index Catalogue" of author and subject listings as well as the…

  2. Disease: H00480 [KEGG MEDICUS

    Lifescience Database Archive (English)

    Full Text Available Puusepp H, Raymond FL, Schwartz CE, Stevenson RE, Turner G, Field M, Walikonis RS, Harvey RJ, Hackett A, Fu...oubridge C, Tarpey PS, Abidi F, Ramsden SL, Rujirabanjerd S, Murphy JA, Boyle J, Shaw M, Gardner A, Proos A,

  3. The Electrochemical Society, Inc. Meeting Program (181st), Held in St. Louis, Missouri on May 17-22, 1992. Including: State-of-the-Art Program on Compound Semiconductors XVI, Fullerenes: Chemistry, Physics, and New Directions, Quantum Confinement, Micromachining and Microstructures, Electronics/Dielectric Science and Technology Joint Recent News Papers

    Science.gov (United States)

    1991-04-28

    A. Kilfoyle, Publications Manager Ellen Titano, Information Systms Manager * Carolya Pylypiak Financial Manager Barbara J. Baggott, Secretary to Roque...514 ELECTROCHEMISTRY OF HIGH TEMPERATURE Microdynemics In Chioroalluminate Melt - W. R. Carper . SUPERCONDUCTORS C. E. Keller. P. A. Shaw, M. Parrish...alumina Dept.. University of California, Santa Barbara , Santa BRarbara, CA specimens were heated conventionally or in a plasma over identi- 93106 cal

  4. 75 FR 31812 - Receipt of Applications for Endangered Species Permits

    Science.gov (United States)

    2010-06-04

    ... Century Boulevard, Suite 200, Atlanta, Georgia 30345 (Attn: Cameron Shaw, Permit Coordinator). FOR FURTHER... Aquarium, Tacoma, Washington, TE834070 The applicant requests renewed authorization to receive, retain... (Picoides borealis) throughout the range of the species in Florida, Georgia, South Carolina, North...

  5. First Chinese public hospital wins Joint Commission International accreditation: the Health Information Department played a key role in the process.

    Science.gov (United States)

    Shaffer, Audrey; Jun, Cheng Li

    2008-07-01

    Sir Run Run Shaw Hospital in Hangzhou, China spent five years preparing for a Joint Commission International accreditation survey. In March 2007 it became the first public hospital on the Chinese mainland to attain international accreditation. The Health Information Department, managed according to Western standards, played an integral role in preparing the hospital for the survey.

  6. A Dynamic Fiber Composite Continuum Model of the Tympanic Membrane. Part 1. Model Formulation.

    Science.gov (United States)

    1985-07-01

    references mentioned, F. Netter (1900) has pro- duced several very clear illustrations of the human hearing system. . ~I~i...Audiology, Suppl. 5. 24-50. 55. Shaw, E.A.G. (1974a): The external ear. Handbook of Sensory Physiology , Vol. VII, Auditory System, W. D. Keidel and W. D

  7. Role of ets Oncogenes in the Progression of Breast Cancer

    Science.gov (United States)

    1998-10-01

    8217 References 167 Arias J, Alberts AS, Brindle P, Claret FX, Smeal T, Karin M, May WA, Lessnick SL, Braun BS, Klemsz M, Lewis BC, Feramisco J and Montminy M...0 and Shaw PE. (1994). Mol. Cell. Oncogene, 8, 3459-3464. Biol., 14, 4815-4824. Bories J, Willerford DM, Grevin D, Davidson L, Camus A, Lopez M

  8. Master i jego masterskaja / Boris Tuch

    Index Scriptorium Estoniae

    Tuch, Boris, 1946-

    2007-01-01

    3.-6. märtsini toimuvad Tallinnas Moskva teatri Pjotr Fomenko Meistriklass külalisetendused. Esitatakse lavastused "Perekondlik õnn" Lev Tolstoi romaani järgi Pjotr Fomenko lavastuses ja George Bernard Shaw' "Südametemurdumise maja" Jevgeni Kamenkovitshi lavastuses

  9. Vastuvooluteater, mainstream ja arengus toppama jäänud teater... või mis? / Margot Visnap

    Index Scriptorium Estoniae

    Visnap, Margot, 1959-

    2004-01-01

    Vastuseks artiklile Eesti Päevalehes (30. märts), kus Priit Raud kurdab eesti teatri isoleerituse üle. Ka muljeid M. Kõivu "Finis nihili" lavastusest, Saaremaa miniteatripäevadest, G. B. Shaw näidendi "Tagasi Metuusala juurde" 5. osa "Mõtte piiridele" etendusest ja J. Jacobsi ja W. Casey muusikalist "Grease"

  10. A winning game plan for QI.

    Science.gov (United States)

    Boyle, R L; Shaw, J G; Stewart, D

    1994-01-01

    Authors Robert L. Boyle, Jr., M.P.H., FACMPE, James G. Shaw, M.B.A., and Diane Stewart describe how to put a quality improvement program into practice by identifying key internal processes, selecting an improvement program, identifying what to improve and developing a review method. They also present results from the first year of their quality improvement process.

  11. Notation systems for transcription: an empirical investigation.

    Science.gov (United States)

    Romero, Catherine; O'Connell, Daniel C; Kowal, Sabine

    2002-11-01

    A 21-syllable question posed by Bernard Shaw in a CNN television interview with Margaret Thatcher was presented to 90 participants, either as an audio recording or as a typed transcript or as both. Participants were asked to speak it, as closely as possible, as Shaw had (or, in conditions without the audio recording, as he might have). The typed version was either an ordinary transcript or a transcript in one of three transcription systems used currently in research on spoken discourse, all of which incorporate notations for prosody. Hence, there were nine conditions in all, with five women and five men in each. Contrary to the experimental hypothesis, approximations to Shaw's original temporal measures of performance were not degraded but were instead improved significantly by the addition of a prosodically notated transcript to the audio recording and significantly more in the absence of the audio recording. Presentation of the ordinary transcript alone produced the worst approximation to Shaw's temporal measures. The usefulness, accuracy, and readability of transcripts prepared according to detailed notation systems are discussed.

  12. Selfless Service: The Cavalry Career of Brigadier General Samuel M. Whitside from 1858 to 1902

    Science.gov (United States)

    2002-05-31

    were one of the wealthiest residents on the island and had befriended the Whitside’s the previous year. The matrimonial festivities were a...collection. Leavenworth. Shaw, Dennis Edward. “The Battle of Wounded Knee: Myth Versus Reality.” PhD diss, University of Miami, Ann Arbor: University

  13. Guerrilla Warfare: Cause and Conflict (A 21st Century Success Story?),

    Science.gov (United States)

    1981-01-01

    Compleat Pentagon Capers , as well as numerous articles in Navy Times, US Naval Institute Proceedings, and the Naval War College Review. His Essays on...cross of iron.’ 2 NOTES 1. George Bernard Shaw, Major Barbara , 1905. 2. John Hamer, World Arms Sales, (Congressional Quarterly, Inc., Washing- ton, D.C

  14. Cognitive Therapy for Depression: A Comparison of Individual Psychotherapy and Bibliotherapy for Depressed Older Adults

    Science.gov (United States)

    Floyd, Mark; Scogin, Forrest; McKendree-Smith, Nancy L.; Floyd, Donna L.; Rokke, Paul D.

    2004-01-01

    Thirty-one community-residing older adults age 60 or over either received 16 sessions of individual cognitive psychotherapy (Beck, Rush, Shaw, & Emery, 1979) or read Feeling Good (Burns, 1980) for bibliotherapy. Posttreatment comparisons with the delayed-treatment control indicated that both treatments were superior to a delayed-treatment control.…

  15. The Basic Tenets of Invitational Theory and Practice: An Invitational Glossary

    Science.gov (United States)

    Shaw, Daniel E.; Siegel, Betty L.; Schoenlein, Allyson

    2013-01-01

    A review of the literature which concentrates on Invitational Theory and Practice (ITP) has revealed an inconsistent and oft times confusing or contradictory use of named concepts, labels, phrases, wordings, definitions, and other such titles of major ITP principles (Shaw and Siegel, 2010). Presented in a glossary type format, the purpose of this…

  16. The Emerging Role of Vitamin D in Cancer Risk Reduction

    Science.gov (United States)

    2003-01-01

    2002;112((8) Jun 1):659-62. 187. Thomas MK, Lloyd-Jones DM, Thadhani RI, Shaw AC, Deraska DJ, Kitch BT, et al. Hypovitaminosis D in medical inpatients. N...Looker AC, et al. Hypovitaminosis D prevalence and determinants among African American and white women of reproductive age: third National Health

  17. 77 FR 56210 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Science.gov (United States)

    2012-09-12

    ... Straub; Wells Fargo & Company. 20121180 G Apple Inc.; AuthenTec, Inc.; Apple Inc. 20121204 G Oracle... 08/01/2012 20120945 G Technip S.A.; The Shaw Group Inc.; Technip S.A. 20121154 G DTE Energy Company... Company. 08/03/2012 20121098 G Time Warner Inc.; Bleacher Report, Inc.; Time Warner Inc. 20121130...

  18. Multicultural Approaches in Psychotherapy: A Rejoinder

    Science.gov (United States)

    Owen, Jesse; Leach, Mark M.; Wampold, Bruce; Rodolfa, Emil

    2011-01-01

    In this rejoinder, the authors address several issues raised by R. L. Worthington and F. R. Dillon (2011) and C. R. Ridley and M. Shaw-Ridley (2011) regarding (a) the measurement of multicultural competencies (MCCs), (b) sampling considerations in multicultural research, and (c) the conceptual frame of multicultural psychotherapy research. The…

  19. The Efficacy of Group Decision Support Systems: A Field Experiment to Evaluate Impacts on Air Force Decision Makers

    Science.gov (United States)

    1992-12-01

    temporal function (i.e., same or different times). 5 Combining the 4 Based on the previous works of Shaw, Carter, Hackman, Steiner , Shiflett, Taylor...Inc., 1991. 10. Finley, Michael. "The New Meaning of Meetings," Communication World. 8: 25-27 (March 1991). 11. Freund, Rudolf J. and Ramon C. Littell

  20. Sound Database of Marine Animal Vocalizations Structure and Operations.

    Science.gov (United States)

    1992-08-01

    Neophoca cinerea (Peron) 1816 CA4A Otaria flavescens (Shaw) 1800 CA6A Phocarctos hookeri (Gray) 1844 CA8A Zalovhus californianus (Lesson) 1828 CA9A...Australian sea lion -- Neohoca cinerea CA4A Southern sea lion -- Otaria flavescens CA6A N. Z. sea lion -- Phocarctos hookeri CA8A California sea lion

  1. Mozart Effect-Shmozart Effect: A Meta-Analysis

    Science.gov (United States)

    Pietschnig, Jakob; Voracek, Martin; Formann, Anton K.

    2010-01-01

    The transient enhancement of performance on spatial tasks in standardized tests after exposure to the first movement "allegro con spirito" of the Mozart sonata for two pianos in D major (KV 448) is referred to as the Mozart effect since its first observation by Rauscher, Shaw, and Ky (1993). These findings turned out to be amazingly hard to…

  2. Does Listening to Mozart Affect Listening Ability?

    Science.gov (United States)

    Bowman, Becki J.; Punyanunt-Carter, Narissra; Cheah, Tsui Yi; Watson, W. Joe; Rubin, Rebecca B.

    2007-01-01

    Considerable research has been conducted testing Rauscher, Shaw, and Ky's (1993) Mozart Effect (ME). This study attempts to replicate, in part, research that tested the ME on listening comprehension abilities. Also included in this study is an examination of control group issues in current day research. We hypothesized that students who listen to…

  3. Stomach and duodenum

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    2009195 The expression of heat shock protein 70/90 in patients with atrophic gastritis or gastric cancer and its significance.SUN Leimin(孙蕾民),et al.Dept Gastroenterol,Sir Run Run Shaw Hosp,Zhejiang Univ,Hangzhou 310016.Chin J Dig,2009;29(3);164-167.

  4. Eleven new species of Athacryvac Braet & van Achterberg from the Neotropical Region (Hymenoptera, Braconidae, Rogadinae).

    Science.gov (United States)

    Shimbori, Eduardo Mitio; Shaw, Scott Richard; Almeida, Luis Felipe Ventura De

    2016-07-14

    The neotropical genus Athacryvac Braet & van Achterberg was recently described based on two species from French Guiana. Despite the resemblance of these species with the diverse and widespread genus Aleiodes, the authors opted to erect the new genus based on several synapomorphies. With the analysis of more comprehensive morphological and geographical variation we propose reclassifying Athacryvac as a subgenus within Aleiodes. In this paper we describe 11 new neotropical species of the subgenus Athacryvac: Aleiodes (Athacryvac) achterbergi Shimbori & Penteado-Dias sp. nov., Aleiodes (Athacryvac) amazoniensis Shimbori & Almeida sp. nov., Aleiodes (Athacryvac) braeti Shimbori & Shaw sp. nov., Aleiodes (Athacryvac) choco Shimbori sp. nov., Aleiodes (Athacryvac) donaldquickei Shimbori & Penteado-Dias sp. nov., Aleiodes (Athacryvac) gonzalezi Shimbori & Shaw sp. nov., Aleiodes (Athacryvac) paradoxus Shimbori & Penteado-Dias sp. nov., Aleiodes (Athacryvac) soaresi Shimbori & Penteado-Dias sp. nov., Aleiodes (Athacryvac) tico Shimbori & Shaw sp. nov., Aleiodes (Athacryvac) torresi Shimbori & Shaw sp. nov., Aleiodes (Athacryvac) zaldivari Shimbori & Almeida sp. nov. We also provide new morphological and distributional data for the previously described A. alternatus and A. fuscatus, as well as the description of the male of the later species. The 13 known species of Aleiodes (Athacryvac) stat. nov. are restricted to the Neotropical Region, ranging from southern Mexico to southern Brazil. With our current results, there are 104 described neotropical Aleiodes species.

  5. Perioperative nursing for laparoscopic liver resection

    Institute of Scientific and Technical Information of China (English)

    CHEN Li-jia; WEN Guo-fen

    2005-01-01

    Sir Run Run Shaw Hospital (SRRSH) has developed a form of laparoscopic hepatectomy, resecting by curettage and suction. Such resection has been carried out successfully in 6 patients who had liver tumors. The results are satisfactory. And after the operation, there is a very effective perioperative nursing ensuring the patient's recovery.

  6. Jejunum and ileum

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    2005219 NOD2/CARD15 gene polymorphisms and susceptibility to Crohn’s disease in Chinese Han population. GAO Min(高敏), et al. Dept Digestol, Sir Run Shaw Hosp, Sch Med, Zhejiang Univ, Hangzhou 310016. Chin J Intern Med, 2005;44(3): 210-212. Objective: Previous studies have shown NOD2/ CABD15 gene is the first susceptibility gene to

  7. Positive Allosteric Modulation of Kv Channels by Sevoflurane: Insights into the Structural Basis of Inhaled Anesthetic Action.

    Directory of Open Access Journals (Sweden)

    Qiansheng Liang

    Full Text Available Inhalational general anesthesia results from the poorly understood interactions of haloethers with multiple protein targets, which prominently includes ion channels in the nervous system. Previously, we reported that the commonly used inhaled anesthetic sevoflurane potentiates the activity of voltage-gated K+ (Kv channels, specifically, several mammalian Kv1 channels and the Drosophila K-Shaw2 channel. Also, previous work suggested that the S4-S5 linker of K-Shaw2 plays a role in the inhibition of this Kv channel by n-alcohols and inhaled anesthetics. Here, we hypothesized that the S4-S5 linker is also a determinant of the potentiation of Kv1.2 and K-Shaw2 by sevoflurane. Following functional expression of these Kv channels in Xenopus oocytes, we found that converse mutations in Kv1.2 (G329T and K-Shaw2 (T330G dramatically enhance and inhibit the potentiation of the corresponding conductances by sevoflurane, respectively. Additionally, Kv1.2-G329T impairs voltage-dependent gating, which suggests that Kv1.2 modulation by sevoflurane is tied to gating in a state-dependent manner. Toward creating a minimal Kv1.2 structural model displaying the putative sevoflurane binding sites, we also found that the positive modulations of Kv1.2 and Kv1.2-G329T by sevoflurane and other general anesthetics are T1-independent. In contrast, the positive sevoflurane modulation of K-Shaw2 is T1-dependent. In silico docking and molecular dynamics-based free-energy calculations suggest that sevoflurane occupies distinct sites near the S4-S5 linker, the pore domain and around the external selectivity filter. We conclude that the positive allosteric modulation of the Kv channels by sevoflurane involves separable processes and multiple sites within regions intimately involved in channel gating.

  8. Unveiling common responses of Medicago truncatula to appropriate and inappropriate rust species

    Directory of Open Access Journals (Sweden)

    Maria Carlota eVaz Patto

    2014-11-01

    Full Text Available Little is known about the nature of effective defense mechanisms in legumes to pathogens of remotely related plant species. Some rust species are among pathogens with broad host range causing dramatic losses in various crop plants. To understand and compare the different host and nonhost resistance responses of legume species against rusts, we characterized the reaction of the model legume Medicago truncatula to one appropriate (Uromyces striatus and two inappropriate (U. viciae-fabae and U. lupinicolus rusts. We found that similar pre and post-haustorial mechanisms of resistance appear to be operative in M. truncatula against appropriate and inappropriate rust fungus. The appropriate U. striatus germinated better on M. truncatula accessions then the inappropriate U. viciae-fabae and U. lupinicolus, but once germinated, germ tubes of the three rusts had a similar level of success in finding stomata and forming an appressoria over a stoma. However responses to different inappropriate rust species also showed some specificity, suggesting a combination of non specific and specific responses underlying this legume nonhost resistance to rust fungi. Further genetic and expression analysis studies will contribute to the development of the necessary molecular tools to use the present information on host and nonhost resistance mechanisms to breed for broad-spectrum resistance to rust in legume species.

  9. Another failure to generalize the Mozart effect.

    Science.gov (United States)

    McCutcheon, L E

    2000-08-01

    Several studies have not replicated Rauscher, Shaw, and Ky's 1993 finding that 10 minutes of exposure to Mozart piano music temporarily enhanced performance on three spatial reasoning tasks. Later Rauscher and Shaw argued that enhanced performance is unlikely unless three conditions are met. The present study was designed to meet those three conditions. 36 adults were exposed to one of six listening orders and one of six test orders. Listening and test orders had no systematic effect on spatial reasoning performance. A one-factor, repeated-measures analysis of variance yielded no significant difference on spatial reasoning performance after listening to classical music, jazz, or silence. A reanalysis, using only those items most likely to tap spatial reasoning, fell short of significance, and mean scores were in the direction opposite to that hypothesized. These results were inconsistent with studies that have supported a Mozart effect.

  10. Fluid-fluid interaction during miscible and immiscible displacement under ultrasonic waves

    Science.gov (United States)

    Hamida, T.; Babadagli, T.

    2007-12-01

    This paper aims at identifying and analyzing the influence of high-frequency, high-intensity ultrasonic radiation at the interface between immiscible (different types of oils and aqueous solutions) and miscible (different types of oil and solvent) fluids. An extensive set of Hele-Shaw type experiments were performed for several viscosity ratios, and interfacial tension. Fractal analysis techniques were applied to quantify the degree of fingering and branching. This provided a rough assessment of the degree of perturbation generated at the interface when the capillary forces along with the viscous forces are effective. Miscible Hele-Shaw experiments were also presented to isolate the effect of viscous forces. We found that ultrasound acts to stabilize the interfacial front, and that such effect is most pronounced at low viscosity ratios.

  11. Experimental study on viscous fingering with partial miscible fluids

    Science.gov (United States)

    Suzuki, Ryuta; Nagatsu, Yuichiro; Mishra, Manoranjan; Ban, Takahiko

    2016-11-01

    Viscous fingering (VF) instability occurs when a more viscous fluid is displaced by a less viscous one in porous media or Hele-Shaw cells. So far, studies of VF have focused on fluids that are either fully miscible or immiscible. However, little attention has been paid to VF in partially miscible fluids. Here, we have experimentally investigated VF in a radial Hele-Shaw cell using an aqueous two phase system (Ban et al. Soft Matter, 2012) which is an example of partially miscible fluids system. We have found novel instabilities that are counter-intuitive in miscible and immiscible systems. These include multiple droplets formation for low flow rate and widening of fingers at intermediate flow rate. The occurrence of the new instability patterns is induced by Korteweg effect in which convection is induced during phase separation in partially miscible systems.

  12. Modeling and Simulation of Fiber Orientation in Injection Molding of Polymer Composites

    Directory of Open Access Journals (Sweden)

    Jang Min Park

    2011-01-01

    Full Text Available We review the fundamental modeling and numerical simulation for a prediction of fiber orientation during injection molding process of polymer composite. In general, the simulation of fiber orientation involves coupled analysis of flow, temperature, moving free surface, and fiber kinematics. For the governing equation of the flow, Hele-Shaw flow model along with the generalized Newtonian constitutive model has been widely used. The kinematics of a group of fibers is described in terms of the second-order fiber orientation tensor. Folgar-Tucker model and recent fiber kinematics models such as a slow orientation model are discussed. Also various closure approximations are reviewed. Therefore, the coupled numerical methods are needed due to the above complex problems. We review several well-established methods such as a finite-element/finite-different hybrid scheme for Hele-Shaw flow model and a finite element method for a general three-dimensional flow model.

  13. Controlling radial fingering patterns in miscible confined flows.

    Science.gov (United States)

    Chen, Ching-Yao; Huang, C-W; Wang, L-C; Miranda, José A

    2010-11-01

    Injection-driven immiscible flow in radial Hele-Shaw cells results in highly ramified patterns if the injection rate is constant in time. Likewise, time-dependent gap immiscible flow in lifting Hele-Shaw cells leads to intricate morphologies if the cell's gap width grows exponentially with time. Recent studies show that the rising of these complex fingered structures can be controlled by properly adjusting the injection rate, and the time-dependent gap width. We investigate the effectiveness of these control strategies assuming that the fluids involved are miscible. Despite the absence of surface tension effects, intensive numerical simulations support the stabilizing role of these controlling protocols. Splitting, merging and competition of fingers are all inhibited. The sensitivity of the system to changes in the initial conditions and Péclet numbers is also discussed.

  14. Impulsive dispersion of a granular layer by a weak blast wave

    Science.gov (United States)

    Rodriguez, V.; Saurel, R.; Jourdan, G.; Houas, L.

    2017-03-01

    The dispersion of particles by blast or shock waves induces the formation of coherent structures taking the shape of particle jets. In the present study, a blast wave, issued from an open shock tube, is generated at the center of a granular ring initially confined in a Hele-Shaw cell. With the present experimental setup, solid particle jet formation is clearly observed in a quasi-two-dimensional configuration. In all instances, the jets are initially generated inside the particle ring and thereafter expelled outward. Furthermore, thanks to the two-dimensional experimental configuration, a general study of the main parameters involved in these types of flows can be performed. Among them, the particle diameter, the density of the particles, the initial size of the ring, the shape of the overpressure generated and the surface friction of the Hele-Shaw cell are investigated. Empirical relationships are deduced from experimental results.

  15. Self-Organized Structures in Magnetic Liquids

    DEFF Research Database (Denmark)

    Oddershede, Lene; Bohr, Jakob

    1996-01-01

    Amazing patterns occur when a droplet of an oily suspension of finely divided magnetic particles, a magnetic liquid is confined within a Hele-Shaw cell and is subject to a magnetic field perpendicular to the surface of the cell. The pattern is macroscopic and the typical linear dimension...... of the pattern is about six orders of magnitude bigger than the particles in the magnetic liquid. In a series of experiments we have investigated the effect on the pattern of varying the height of the cell between 0.5 mm and 2 mm The height of the cell was shown to drastically influence both the characteristic...... sizes and the nature of the pattern The pattern changes character from being chaotic to become labyrinthine and finally droplet-like as the height is increased. The effect of varying the amount of magnetic liquid in the Hele-Shaw cell while maintaining the total volume of the cell was also studied...

  16. A new species of solitary Meteorus (Hymenoptera: Braconidae) reared from caterpillars of toxic butterflies (Lepidoptera: Nymphalidae) in Ecuador.

    Science.gov (United States)

    Shaw, Scott R; Jones, Guinevere Z

    2009-01-01

    A new species of parasitoid wasp, Meteorus rugonasus Shaw and Jones (Hymenoptera: Braconidae), is described from the Yanayacu Biological Station, Napo Province, Ecuador. The new species is diagnosed and compared to other species in the genus. It was reared from larvae of Pteronymia zerlina (Hewitson, 1855) (Lepidoptera: Nymphalidae, Ithomiinae) found feeding on leaves of Solanum (Solanaceae). The parasitoid is solitary. This is the first record of a Meteorus species attacking ithomiine Nymphalidae. A new species of parasitoid wasp, Meteorus rugonasus Shaw and Jones (Hymenoptera: Braconidae), is described from the Yanayacu Biological Station, Napo Province, Ecuador. The new species is diagnosed and compared to other species in the genus. It was reared from larvae of Pteronymia zerlina (Hewitson, 1855) (Lepidoptera: Nymphalidae, Ithomiinae) found feeding on leaves of Solanum (Solanaceae). The parasitoid is solitary. This is the first record of a Meteorus species attacking ithomiine Nymphalidae.

  17. Distribución de probabilidad de Maxwell transmutada

    Directory of Open Access Journals (Sweden)

    Yuri A. Iriarte

    2014-12-01

    Full Text Available En este artículo introducimos una extensión de la distribución de probabilidad de Maxwell. Esta extensión se genera utilizando el mapa de transmutación de rango cuadrático, estudiado por Shaw y Buckley en [13], considerando como función base la función de distribución acumulada del modelo de Maxwell. Estudiamos propiedades probabilísticas, realizamos inferencia estadística y estudiamos una aplicación con datos reales Abstract. In this paper we introduce an extension of the Maxwell probability distribution. This extension is generated using the quadratic rank transmutation map studied by Shaw and Buckley in [13], considering as the basis function the cumulative distribution function of the Maxwell model. We study probabilistic properties, we perform statistical inference and study an application with real data.

  18. Art into Science: Helicopter Fleet Replacement Squadron Operations in a Period of Transition

    Science.gov (United States)

    2012-04-27

    Haven CTAvraham Goldratt Institute, 2011). 21. Capt Robert Kono, interview with the author 25-27 Jan 2012. 22. GySgt Greg Shaw, HMLAT-303...correspondence with the author Feb 2012. 12. Steven Simpliciano, VP Business Development, North America Group. Avraham Y. Goldratt Institute, LP...Gary. HMLAT-303 E2E Implementation Roadmap, Dtd 16 Feb 2011. Avraham Goldratt Institute, New Haven CT, 2011. Gestwicki, Gary. HMLAT-303

  19. Fission hindrance and nuclear viscosity

    Indian Academy of Sciences (India)

    Indranil Mazumdar

    2015-08-01

    We discuss the role of nuclear viscosity in hindering the fission of heavy nuclei as observed in the experimental measurements of GDR -ray spectra from the fissioning nuclei. We review a set of experiments carried out and reported by us previously [see Dioszegi et al, Phys. Rev. C 61, 024613 (2000); Shaw et al, Phys. Rev. C 61, 044612 (2000)] and argue that the nuclear viscosity parameter has no apparent dependence on temperature. However, it may depend upon the deformation of the nucleus.

  20. STS-28 Columbia, OV-102, crewmembers train in JSC Mockup and Integration Lab

    Science.gov (United States)

    1989-01-01

    STS-28 Columbia, Orbiter Vehicle (OV) 102, crewmembers participate in shuttle emergency egress (bailout) procedures in JSC Mockup and Integration Laboratory Bldg 9A. Wearing orange launch and entry suits (LESs), crewmembers (left to right) Mission Specialist (MS) Mark C. Brown, MS David C. Leestma, MS James C. Adamson, Pilot Richard N. Richards, and Commander Brewster H. Shaw pause before training exercise. In the background are training personnel and the Manipulator Development Facility (MDF) surrounded by helium-filled mockups.

  1. Species Profiles. Life Histories and Environmental Requirements of Coastal Fishes and Invertebrates (Mid-Atlantic). Softshell Clam.

    Science.gov (United States)

    1986-08-01

    was achieved in 40 days. to the substrate to become a juvenile Shaw (1965) also reported a spring clam. A byssus (sticky thread) is spawning failure...for locomotion (Green 1975). Although The fertilized egg takes about usually attached to the substrate by 12 h to develop into the planktonic the byssus ...clams per square foot; it is highest at depths of 3-4 Eventually the byssus is shed and m, temperatures less than 28 °C and the adult lifestyle

  2. The International Masterclasses : to give an overview of who the masterclasses are for and what participants take away from the experience

    CERN Multimedia

    CMS Outreach

    2011-01-01

    Explain the history, the purpose and the day of the masterclasses. Interviews with: - the current and past moderators from CERN - the students from France, Austria and the USA - interviews with a french teacher - interview with the creator of the CMS exercise - interviews of the co-contributor to the event display tool (served students to do the CMS exercise) Host of the video - Kate Shaw (ATLAS) by Matt Ryan (CMS)

  3. Formation of Chimneys in Mushy Layers: Experiment and Simulation

    CERN Document Server

    Anderson, Anthony M; Worster, Grae

    2011-01-01

    In this fluid dyanmics video, we show experimental images and simulations of chimney formation in mushy layers. A directional solidification apparatus was used to freeze 25 wt % aqueous ammonium chloride solutions at controlled rates in a narrow Hele-Shaw cell (1mm gap). The convective motion is imaged with schlieren. We demonstrate the ability to numerically simulate mushy layer growth for direct comparison with experiments.

  4. Gender Metaphor for Colonialism in John Bull's Other Island

    Institute of Scientific and Technical Information of China (English)

    曹笑丽

    2015-01-01

    John Bull's Other Island is the only play of George Bernard Shaw dealing with the Irish problem.He manages to define and ridicule colonialism in it and satires English colonialist’s intention and nature.This paper studies colonialism in this play through sexual metaphor,to decipher how it works simultaneously as an intimation of the British colonial attitudes and a satire of economicexploitation.

  5. Performance of Nonlinear Mechanical, Resonant-Shunted Piezoelectric, and Electronic Vibrations Absorbers for Multi-Degree-of-Freedom Structures

    Science.gov (United States)

    2011-07-21

    cowork- ers in the Mechanical Systems Lab. Thanks to Mauro, Dino, Clay, Eric, Debbie, Jens, and Marca for their discussions and assistance with...through static equilibrium simultaneously. iii. Displacement of one mass uniquely defines the displacements of all masses. These criteria are analogous to...be greater. Shaw and Pierre [10, 11] present an alternative definition of nonlinear normal modes, defined for both conservative and dissipative systems

  6. Design Charts for Flat Compression Panels Having Longitudinal Extruded Y-Section Stiffeners and Comparison with Panels Having Formed Z-Section Stiffeners

    Science.gov (United States)

    1947-08-01

    pi L/G ts’ is emallest for the ’j𔃿s-T Y-stiffened panela and largest for the 2&3-T Z-stfffened panela - -’ ~.tiO’ fi&ureti 18 to 26 shaw’ti a...differences occurred be~been the test SpCfinene for the 2bS-T Y-stiflened and Z-stiffened panela . Differences occurred in mterial properties, diamter and

  7. Studies of Phlebotomine Sand Flies.

    Science.gov (United States)

    1980-08-31

    World visceral -4- Leishmania , in Oklahoma in dogs (LTC Larry Hendricks, personal comm.), indicates that the successful establishment of an imported...Lainson and Shaw (1968) and Ward et al. (1973, 1977) incriminated Lu. flaviscutellata (Mangabeira)as the vector of Leishmania mexicana amazonensis in...excessive larval mortality caused by fungal growth, improper diet or moisture, disease and/or other factors (Killick-Kendrick, R. 1978. Acta Tropica 35:297

  8. Effective and Efficient Training and Advising in Pakistan

    Science.gov (United States)

    2010-06-01

    35 Marvin G. Weinbaum, “Counterterrorism, Regional Security, and Pakistan’s Afghan Frontier,” U.S. House of Representatives Armed Services...eating at a local food stand on October 2, 2002; SFC Christopher D. Shaw and SSG Jack M. Martin III were killed on September 29, 2009, when their...2008. http://www.time.com/time/world/article/0,8599,1842131,00.html, (accessed April 30, 2010). Weinbaum, Marvin G. “Counterterrorism, Regional

  9. Rickettsial Pathogens and Arthropod Vectors of Medical and Veterinary Significance on Kwajalein Atoll and Wake Island

    Science.gov (United States)

    2012-01-01

    Aedes aegypti (L.), Aedes marshallensis Stone & Bohart, and Culex quinquefasciatus Say. In addition, the brown dog tick, Rhipicephalus sanguineus...C. Reeves, & T. Aarons. 1948. Aedes aegypti on Wake Island. Pro- ceedings of the Hawaiian Entomological Society 13: 255 – 256. Shaw E. S., J. D...subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. 1. REPORT

  10. A Primer on the Detection of Nuclear and Radiological Weapons

    Science.gov (United States)

    2005-05-01

    Shaw, 2003]. A very compact, low-power mechanically-cooled Ge detector system is under development using a miniature Stirling -cycle cooler . This...100 degrees Kelvin, either by liquid nitrogen or electro- mechanical coolers . This makes the detector system heavier than NaI and adds logistical...represent a Department of Defense endorsement, nor is it intended to be an exhaustive survey of such devices and systems . Gary W. Philips is an

  11. Stephen Poliakoff: another icon of contemporary British drama

    OpenAIRE

    Idrissi, Nizar

    2008-01-01

    This thesis is an attempt to portray the birth of British modern drama and the most important figures breaking its new ground; more to the point, to shed light on the second generation of British dramatists breaking what G.B. Shaw used to call ‘middle-class morality’. The focal point here is fixed on Stephen Poliakoff, one of the distinctive dramatists in contemporary British theatre, his work and the dramatic tinge he adds to the new drama.

  12. Financial Liberalization and Economic Growth in Nigeria: An Empirical Evidence

    OpenAIRE

    Anthony Orji; Jonathan E. Ogbuabor; Onyinye I. Anthony-Orji

    2015-01-01

    The liberalization thesis has generated a lot of debate in theoretical and empirical literature. In this paper we construct an index of financial liberalization from 1981 to 2012 to investigate its impact on economic growth in Nigeria using the McKinnon–Shaw framework. The ordinary least squares methodology and cointegration analysis are adopted in the study. The result reveals that financial liberalization (FINDEX) and private investment (PINV) have significant positive impact on economic gr...

  13. RESEARCH DIRECTED TOWARD THE ELECTRON MICROANALYSIS OF MINERAL PHASES IN CHONDRITE METEORITES.

    Science.gov (United States)

    compositions of twelve unequilibrated carbonaceous chondrites . These meteorites were found to exhibit a range of homogeneity. The chemistry of the olivine...orthopyroxene and clinopyroxene in seventeen equilibrated ordinary chondrites of the H, L, and LL groups were determined, and the variation of chemistry...within each group was found to be less than 4%, with the exception of the Shaw and Uden meteorites. These chondrites are atypical which is demonstrated by the higher Ca content of the orthopyroxene. (Author)

  14. A Summary of the Foundation Research Program, FY 1984.

    Science.gov (United States)

    1986-04-30

    Scattering in a Random Ocean - A Linear Systems Theory Approach 34 DEPARTMENT OF METEOROLOGY 35 Investigation of the Structure and Evolution of. the Coastal... Linear Systems Theory Approach DEPARTMENT OF METEOROLOGY Investigation of the Structure W.J. Shaw 6.1 and Evolution of the Coastal ABL Using an Acoustic... Systems Theory Approach INVESTIGATOR: L. J. Ziomek, Assistant Professor of Electrical and Computer Engineering SPONSOR: NPS Foundation Research Program

  15. Interaktiivsed muuseumid ja kunst Tallinnas : pühendatud Märt Väljataga, Anu Juuraku ja tundmatute autorite loomingule / Raivo Kelomees

    Index Scriptorium Estoniae

    Kelomees, Raivo, 1960-

    2000-01-01

    Kunsti meelelahutuslikkus. Maailma interaktiivse kunsti muuseumide (Tokyo ICC, Linzi Ars Electronica Center, Karlsruhe ZKM) eesmärk, mängulistest kunstiteostest nendes muuseumides. Interaktiivsete eksponaatidega Tervishoiumuuseum ning Tallinna tehnika- ja teaduskeskus. Märt Väljataga näitus 'Sada tuhat miljardit millenniumisonetti' Linnagaleriis Tallinnas. Anu Juuraku näitus 'Tsoon 2' Kunstihoones. A. Juuraku töö "Suflöör" ja Jeffrey Shaw töö "Loetav linn" võrdlus.

  16. Genome Annotation and Transcriptomics of Oil-Producing Algae

    Science.gov (United States)

    2015-03-16

    Collaborators Christoph Benning (Michigan State University) for chemical analysis of fatty acids in TAG and TAG quantitation Arthur Grossman (Carnegie... Grossman , A.R., Merchant, S.S. (2012) Three acyltransferases and a nitrogen responsive regulator are implicated in nitrogen starvation-induced...Hong- Hermesdorf, A., Shaw, J., Karpowicz, S.J., Gallaher, S.D., Johnson, S., Benning, C., Pellegrini, M., Grossman , A.R., Merchant, S.S. (2012

  17. Proceedings of the OGAMM Meeting (4th) Held in Ilkley, Yorkshire, England on 19-22 August 1991

    Science.gov (United States)

    1991-08-22

    Meneses -Nava, D. J. Shaw and T, A. King University of Manchester Structural Studies of Sol-Gel Glasses 114 Carole C. Pgrry and Xiaochun Li, Brunel...beam steering and optical interconnect, optical logic gates, image subtraction, novelty filters, image convolution and correlation, and optical memories ...optical image storage and associative memories ). The requirements of each of these will be evaluated by MRC to determine which are best suited to

  18. Jeep Hurricane

    Institute of Scientific and Technical Information of China (English)

    申克

    2005-01-01

    要说2005年北美国际车展(North American International Auto Shaw)上.最吸引人的概念车.恐怕就是克莱斯勒公司的Jeep Hurncane了:只要你看它一眼.就一定会被它身上四溢的“野性”深深吸引。

  19. Development of a Nanotechnology Platform for Prostate Cancer Gene Therapy

    Science.gov (United States)

    2011-07-01

    applications in drug and gene delivery, Adv. Drug Deliv. Rev. 56 (7) (2004) 967–985. [6] A.M. Haines, A.S. Irvine , A. Mountain, J. Charlesworth, N.A. Farrow...R.D. Husain, H. Hyde, H. Ketteringham, R.H. McDermott, A.F. Mulcahy, T.L. Mustoe, S.C. Reid, M. Rouquette, J.C. Shaw, D.R. Thatcher, J.H. Welsh , D.E

  20. Coding, Organization and Feedback Variables in Motor Skills.

    Science.gov (United States)

    1982-04-01

    cord. Journal of Experimental Biology , 1964, 𔃾l, 359-362. Theios, J. The components of response latency in simple human information processing tasks...of interlimb reflexes and the central coordination of limbs during locomotion indicated o. higherI I I alevel automatism responsible for these events... Biology and Experimental Psychology. London: Hutchison, 1975. Turvey, M. T. Preliminaries to a theory of action with reference to vision. In R. Shaw and

  1. Tarawa to Okinawa: The Evolution of Amphibious Operations in the Pacific during World War II

    Science.gov (United States)

    2010-04-06

    craft developed by Andrew Jackson Higgins, and a tracked landing craft developed by Donald Roebling. Both of these craft would ultimately be...from Tarawa. Smith, Holland M. and Percy Finch. Coral and Brass. Washington: Zenger Publishing, 19 79. Personal memoirs of Major General Holland M...and Percy Finch, Coral and Brass (Washington: Zenger P ublishing, 1979), 120. 64 73 Smith, 120-121. 74 Smith, 133. 75 Shaw, 109. 76 Isley, 575

  2. University of California Conference on Statistical Mechanics (4th) Held March 26-28, 1990

    Science.gov (United States)

    1990-03-28

    function for the ,round state of the spin-1/2 antiferromagnetic Heisenberg model on a 32x32 square lattice using a projection Monte Carlo method...Transitions Leng X* & Shaw G L, Music Composition and Models of the Cortex Using Physical System Analogies Lia.ng S, Monte Carlo Simulations of the...Direct Simulation Monte Carlo program. The system was a dilute gas with 50,000 particles in a Rayleigh-Bdnard configuration. The POP analysis

  3. A Randomized Controlled Trial of In-Home Tele-Behavioral Health Care Utilizing Behavioral Activation for Depression

    Science.gov (United States)

    2014-05-01

    conditioning (Mower, 1960; Pavlov, 1927; Skinner, 1938) and the behavioral component of cognitive therapy for depression (Beck, Rush, Shaw, & Emery...Crits-Christoph P, Beck AT: The clinical effectiveness of cognitive therapy for depression in an outpatient clinic. J Affect Disorders 2010, 125:169...technologies in psychotherapy for depression : A meta - analysis . Depression and Anxiety, 30, 1058-1067. doi: 10.1002/da.22165 Pruitt, L.D., Luxton

  4. National Guidebook for Application of Hydrogeomorphic Assessment to Tidal Fringe Wetlands

    Science.gov (United States)

    1998-12-01

    grasses (Poaceae), rushes (Juncaceae), sedges ( Cyperaceae ), and chenopods (Chenopodiaceae) or a combination of these families. The plants typically...information about these systems compared with that for the grass- and sedge -dominated tidal marshes. This guidebook, therefore, is restricted to...vegetation type (Golet and Larson 1974; Shaw and Fredine 1956). Marshes, for example, are dominated by grasses and sedges ; swamps by trees. In the case

  5. Metal-Element Compounds of Titanium, Zirconium, and Hafnium as Pyrotechnic Fuels

    Science.gov (United States)

    2015-05-04

    1-11 1 METAL-ELEMENT COMPOUNDS OF TITANIUM, ZIRCONIUM , AND HAFNIUM AS PYROTECHNIC FUELS Anthony P. Shaw,* Rajendra K. Sadangi, Jay C...have started to explore the pyrotechnic properties of other inorganic compounds, particularly those of titanium, zirconium , and hafnium. The...The group 4 metals—titanium, zirconium , and hafnium—are potent pyrotechnic fuels. However, the metals themselves are often pyrophoric as fine

  6. The Mary Ingraham Bunting Institute of Radcliffe College Technical Report. Science Scholars Program

    Science.gov (United States)

    1993-08-31

    Franklin Professor of Physics Harvard University Irene Little-Marenin Associate Professor of Astronomy Wellesley College 9 Nanette Orme-Johnson Professor of...Fellows DELIA DIX AGUILAR ROSEMARY A.JOYCE ROSALIND 1H. SHAW Fellow (Women’s Studies) Flo~wýArithropology) Fellow (Anthropology) olngGen State...Also I joined with Prof. Elizabeth Simmons of Boston University and Prof. Melissa Franklin of Harvard University (both women at Harvard during my

  7. The Evaluation of an EEL Coursebook——Intermediate Matters

    Institute of Scientific and Technical Information of China (English)

    夏欣

    2008-01-01

    @@ As teachers,when evaluating EFL materials,it is important to bear in mind what criteria are available.As McDonough and Shaw (1993)point out,they need some 'brief','practical'.and'comprehensive'criteria.Therefore,our criteria are just focusing on the following aspects:layout and visuals:teaching objectives:the cost;the package;the topics:the skills:tasks and activities and language type and syllabus.

  8. Buckling of Delaminated Long Panels Under Pressure and of Radially-Loaded Stiffened Annular Plates.

    Science.gov (United States)

    1985-10-01

    Sheinman [7-10]. The governing equations for the nonlinear analysis of imperfect, stiffened, laminated, circular, cylindrical thin shells, subjected to...No. 4, 1985, pp. 529-544. 7. Simi tses, G. J.I Sheinman , I., and Shaw, D., "Stability of Laminated ComposJte Shells Subjected to Uniform Axial... Sheinman , I., "Imperfect, Laminated, Cyl ndri cal Shells in Torsion and Axial Compression", Acta -,Ftronautica, v. 10, No. 5-6, 1983, pp. 395-400

  9. Summaries of Research 1983.

    Science.gov (United States)

    1983-01-01

    LAKE F LAMB JR, jCIHNSflN AH SH-AW S WOODY JN I-APTZMAN PJ SP-PFSTAICTEC PkESFNTATIGN OF II4FLUENZA ANC HERPES SIMPLEX VIRUS ANTIGENS TO HUMAN f-LYM...TCXTcnIOnGY. NCV .16-16, tc81 PAPER NO.23. WRIGH1T-PATTERSON AYR FflRCF EASE. UN 10, AERO PAC MEDICAL RESEARCH LABORATORY. 1C;P3. PP.337-4-0 IOXICCLCGV DETACI

  10. Biomarkers of Exposure to Toxic Substances Volume 7: Identification of Potential Serum Protein Biomarkers Indicative of Low Level Kidney Degradation in Response to Toxin Exposures

    Science.gov (United States)

    2009-05-01

    analysis of the urine proteome in human diabetic nephropathy .‖ Proteomics 5, 2005 pp. 2648-55. Shaw J, Rowlinson R, Nickson J, Stone T, Sweet A...rare and the outcome is often a lifetime of mitigating symptoms by dialysis treatments or, if lucky, a kidney transplant. In general, a patient...general decrease in renal function occurring over months or years and has no specific treatment . Often the clinical signs of the disease only

  11. Sub-Saharan Africa Report No. 2807.

    Science.gov (United States)

    1983-06-08

    Internal Committee of Resistance, patronized by Jean-Francois Revel, publisher of the weekly L’EXPRESS, Olivier Todd , a reporter of the same...Affairs, then Education Minister; Emmanuel Shaw (TWP Task Force chairman), then a PRC Deputy Minister of State for Presidential Affairs (on...then vice-president of the Mesurado Company under the PRC; Emmanuel Gardiner (TWP member and Deputy Economic Planning Minister) then

  12. The Role of Seagrasses and Kelps in Marine Fish Support

    Science.gov (United States)

    2006-02-01

    harbor greater concentrations of fishes than do unvegetated habitats (Heck et al. 1989, 1997; Edgar and Shaw 1995; Jordan et al. 1996; Jenkins et al...Jeffrey, R. (ed). (1976). “A preliminary inventory of the biota of Padilla Bay,” Huxley College, Department of Biology, Western Washington University...Research Board of Canada 18:203-220. Jordan , F., Bartolini, M., Nelson, C., Patterson, P. E., and Soulen, H. L. (1996). “Risk of predation affects

  13. Mount St. Helens, Washington Feasibility Report & Environmental Impact Statement. Volume 1: Main Report

    Science.gov (United States)

    1984-12-01

    Associates, ~ortland, OR. H o 1 ton , R ~· L • 1 9 8 3 • Per son a 1 Communi cat ion • University, Corvallis, OR. of the 58 p. Lower Ogden Beeman ...Suny Kathy Halllller Larry Ruis James Nunn John Shaw Donald Binion Joseph Gallon Terry Herndon Brian Greenwood Patrick Schmitt Greg Drew...Service Dlatrlcta Cowlitz Economic Development Council &4---A.~ Robert G. Guide, President Longview School District Board of Directors Donald c

  14. Propulsion and Power Rapid Response R&D Support Delivery Order 0041: Power Dense Solid Oxide Fuel Cell Systems: High Performance, High Power Density Solid Oxide Fuel Cells - Materials and Load Control

    Science.gov (United States)

    2008-12-01

    Reno, Nevada, Jan. 9-12, 2006. Jan. 1997. [4] S. Pasricha and S. R. Shaw, “A Dynamic PEM Fuelcell Model ”, IEEE Transactions on Energy Conversion...Abstract concluded on reverse 15. SUBJECT TERMS solid oxide fuel cell, SOFC, solid oxide fuel cell electrodes , SOFC systems, hybrid power systems...Fuel Cells: Load Control: This report provides a physically-based model for design and optimization of a fuel cell powered electric propulsion

  15. Book review: JFK in the senate: pathway to the presidency

    OpenAIRE

    Polo Alonso, Ana

    2013-01-01

    Before John F. Kennedy became a legendary young President, he was the junior Senator from Massachusetts. The Senate was where JFK’s presidential ambitions were born and first realized. In this forthcoming book, John T. Shaw looks at how the young Senator was able to catapult himself on the national stage. JFK in the Senate aims to provide an accessible introduction to Kennedy’s personality and his efforts to transform himself into a viable presidential candidate, and it will certainly appeal ...

  16. Molecular Transmission Band Models for LOWTRAN

    Science.gov (United States)

    1986-12-31

    5.7866 80 75 -7.2 856 8315 -5.3351 6995 -4.7632 7600 -5.7224 80BO -7.1969 A320 -5.7802 1ovo -5.4270 7605 -5. 7048 8085 -7 .()745 8325 -6.5387 7005...Shaw, Appl. Opt. 4, 1113 (1965). 15. IBM Manual System/360, "Scientific Subroutine Package H20-0205-3" (IBM, New York, 1968). 16. S. L. Valley, Ed

  17. Sources of Weapon System Cost Growth. Analysis of 35 Major Defense Acquisition Programs

    Science.gov (United States)

    2008-01-01

    Resource Management Program of RAND Proj- iii ect AIR FORCE. The project’s technical monitor is Jay Jordan, Techni- cal Director of the Air Force Cost...and for his long-term support of Project AIR FORCE’s acquisi- tion and cost analysis research. Richard Hartley (SAF/FMC) and Jay Jordan from the Air...Wickman (1993), Tyson, Nelson, and Utech (1992), Shaw (1982), Tyson et al. (1989), Asher and Maggelet (1984), and Drezner et al. (1993) studied cost

  18. Development of a Cost Estimation Process for Human Systems Integration Practitioners During the Analysis of Alternatives

    Science.gov (United States)

    2010-12-01

    Canadian Defense Technology Center (DTC) (2006); Brooks, Greenley , Dyck, Salwaycott, Scipione and Shaw (2008); and Liu (2009) provide guidance for...effective operations ( Greenley & Associates, 2008). However, these costs were not used in a total cost-benefit analysis because of their multi...December 6, 2010, from http://www.hfidtc.com/ Brooks, J., Greenley , M., Salwaycott, A., & Scipione, A. (2008). The development and validation of a

  19. An Overview of the Technical Basis of HENRE 2.0 Models

    Science.gov (United States)

    2015-08-01

    that survive the risk of circulatory shock, respiratory distress, due to pulmonary edema , and renal distress, due to very high levels of amino acids...hypovolemic shock, and cardiogenic shock (Shaw 1994). Circulating blood volume lost to the interstitial space leads to hypovolemia, which can occur with...burn injuries involving 15% TBSA or more. Edema , which plays a critical role in the pathophysiological process of burn shock, begins immediately after

  20. Microscopic interpretation of folding ϕ-values using the transition path ensemble.

    Science.gov (United States)

    Best, Robert B; Hummer, Gerhard

    2016-03-22

    All-atom molecular dynamics simulations now allow us to create movies of proteins folding and unfolding. However, it is difficult to assess the accuracy of the folding mechanisms observed because experiments cannot yet directly resolve events occurring along the transition paths between unfolded and folded states. Protein folding ϕ-values provide residue-resolved information about folding mechanisms by comparing the effects of mutations on folding rates and stability, but determining ϕ-values by separately simulating mutant proteins would be computationally demanding and prone to large statistical errors. Here we use transition path theory to develop a method for computing ϕ-values directly from the transition path ensemble, without the need for additional simulations. This path-based approach uses the full transition path information available from equilibrium folding and unfolding trajectories, or from transition path sampling, and does not require identification of folding transition states. Applying our approach to a set of simulations of 10 small proteins by Shaw and coworkers [Lindorff-Larsen K, Piana S, Dror RO, Shaw DE (2011) Science 334(6055):517-520; Piana S, Lindorff-Larsen K, Shaw DE (2011) Biophys J100(9):L47-L49; and Piana S, Lindorff-Larsen K, Shaw DE (2013) Proc Natl Acad Sci USA 110(15):5915-5920], we find good agreement with experiments in most cases where data are available. We can further resolve the contributions to fractional ϕ-values coming from partial contact formation versus transition path heterogeneity. Although in some cases, there is substantial heterogeneity of folding mechanism, in others, such as Ubiquitin, the mechanism is strongly conserved.

  1. Meharry-Johns Hopkins Center for Prostate Cancer Research

    Science.gov (United States)

    2015-11-01

    formerly at the Institute for Health, Social, and Community Research (IHSCR) Center for Survey Research ( CSR ) at Shaw University in Raleigh, NC...survey will be conducted at CSR which is now located at Johns Hopkins Bloomberg School of Public Health (JHBSPH) located in Raleigh, NC. The Sons...at Meharry. 4 Dr. LaVeist secured definitive IRB approval at JHU. 5 Working budgets were developed and sub-contract with JHU was signed by both

  2. Analysis of E-marketplace Attributes: Assessing The NATO Logistics Stock Exchange

    Science.gov (United States)

    2008-01-01

    of the Internet and the rapid spread of electronic business across world markets have left few industries unchanged (Howard et al., 2006). Internet...indirect) or by industry orientation (horizontal, vertical or diagonal). Dubelaar et al. (2005) add customer environment ( B2B vs. B2C) as an extra...more easily find supply options and explore new markets . Subramaniam and Shaw (2004) assert that switching costs between suppliers are practically

  3. Defense AR Journal. Volume 18, Number 1, Issue 57

    Science.gov (United States)

    2011-01-01

    create incentives—such as higher wages , fellowships, and employment guarantees—to maintain the pipeline of quality S&E talent that our nation’s economy...in 2000 (Clark, 2007). Other terms associated with Generation Y are “ Millennials ” (Howe & Strauss, 2000), “Net Generation” (Shaw & Fairhurst, 2008...Oblinger, 2003; Martin, 2005; Weingarten, 2009). Martin (2005) describes Millennials as independent, confident, and self-reliant. This may be due to

  4. Observation of two-dimensional Faraday waves in extremely shallow depth.

    Science.gov (United States)

    Li, Xiaochen; Yu, Zhengyue; Liao, Shijun

    2015-09-01

    A family of two-dimensional Faraday waves in extremely shallow depth (1 mm to 2 mm) of absolute ethanol are observed experimentally using a Hele-Shaw cell that vibrates vertically. The same phenomena are not observed by means of water, ethanol solution, and silicone oil. These Faraday waves are quite different from the traditional ones. These phenomena are helpful to deepen and enrich our understandings about Faraday waves, and besides provide a challenging problem for computational fluid dynamics.

  5. O modelo de liberalização financeira dos anos 1990: 'restatement' ou auto-crítica? The financial liberalization model in the 1990s: a restatement or self-criticism?

    Directory of Open Access Journals (Sweden)

    Jennifer Hermann

    2003-01-01

    Full Text Available The paper examines the revisions suffered by the financial liberalization model during the decades of 1980 and1990. Such revisions were forced by two sets of factors: the unfavorable results of some econometric tests of the Shaw-McKinnon model and the experiences of several developed (DC and developing (LDC countries with the liberalization policy. In the econometric field, the tests have shown to play a weak explaining role of the two key variables of the model: the real interest rate and the saving rate. As for DC and LDC experiences, the main challenge to the original Shaw-McKinnon model was the banking and currency crises that have followed the liberalization policy in most of the cases. Facing these constraints, the 'modern version' of liberalization has embodied several (Keynesian critiques to Shaw-McKinnon's financial theory and policy and has been forced to allow for the need of some degree of government intervention in the free choice of financial market concerning its portfolio composition. Further, the new model make a real self-critique, by admitting that, under certain conditions, some degree of financial repression could be necessary and is even beneficial to financial development.

  6. A machine learning approach to nonlinear modal analysis

    Science.gov (United States)

    Worden, K.; Green, P. L.

    2017-02-01

    Although linear modal analysis has proved itself to be the method of choice for the analysis of linear dynamic structures, its extension to nonlinear structures has proved to be a problem. A number of competing viewpoints on nonlinear modal analysis have emerged, each of which preserves a subset of the properties of the original linear theory. From the geometrical point of view, one can argue that the invariant manifold approach of Shaw and Pierre is the most natural generalisation. However, the Shaw-Pierre approach is rather demanding technically, depending as it does on the analytical construction of a mapping between spaces, which maps physical coordinates into invariant manifolds spanned by independent subsets of variables. The objective of the current paper is to demonstrate a data-based approach motivated by Shaw-Pierre method which exploits the idea of statistical independence to optimise a parametric form of the mapping. The approach can also be regarded as a generalisation of the Principal Orthogonal Decomposition (POD). A machine learning approach to inversion of the modal transformation is presented, based on the use of Gaussian processes, and this is equivalent to a nonlinear form of modal superposition. However, it is shown that issues can arise if the forward transformation is a polynomial and can thus have a multi-valued inverse. The overall approach is demonstrated using a number of case studies based on both simulated and experimental data.

  7. Solidification of supercooled water in the vicinity of a solid wall

    Science.gov (United States)

    Schremb, Markus; Tropea, Cameron

    2016-11-01

    An experimental approach utilizing a Hele-Shaw cell for the investigation of the solidification of a supercooled liquid in contact with a solid wall is presented. The setup is based on an idea presented by Marín et al. [A. G. Marín et al., Phys. Rev. Lett. 113, 054301 (2014), 10.1103/PhysRevLett.113.054301], who investigated the planar freezing of a sessile drop without supercooling. This apparatus overcomes optical distortions present when observing the freezing of sessile drops, arising due to reflections and refraction of light on the drop surface. The facility is used to investigate the freezing process of water drops, supercooled down to -20∘C , and to qualitatively demonstrate that the growth behavior is uninfluenced by the use of the Hele-Shaw cell. Different features during freezing, which are known for sessile water drops, are also observed with the Hele-Shaw cell. The growth morphology within the first phase of solidification is categorized according to the initial drop supercooling. Furthermore, freezing velocities within this phase are related to data available in the literature for the growth of single ice dendrites.

  8. Discussing George Bernard Shaw’s influence on Eileen Chang by comparingThe First Incense Burnt andMrs. Warren’s Profession%《沉香屑·第一炉香》与《华伦夫人的职业》比较论--张爱玲接受萧伯纳影响之一例

    Institute of Scientific and Technical Information of China (English)

    陈娟

    2015-01-01

    萧伯纳是张爱玲喜爱的作家之一,二者的创作具有一定的关联。文章主要采用以点带面的分析方法,对萧伯纳《华伦夫人的职业》与张爱玲《沉香屑·第一炉香》进行对读,探讨张爱玲在对梁太太等女性形象塑造上与萧伯纳的暗合之处,并分析张爱玲在对萧伯纳作品的吸收借鉴中如何融入自己的感悟思索,以敏慧的艺术感受进行创造性转化。%As one of Eileen Chang’s favorite writers, George Bernard Shaw undoubtedly exerts certain influence on her. The present essay, by adopting the comparative method and by focusing on Bernard Shaw’sMrs. Warren’s Profession and Eileen Chang’sThe First Incense Burnt, explores Eileen Chang’s coincidence with Bernard Shaw in women characterization such as Lady Liang. But instead of just cutting and pasting Bernard Shaw directly, Aileen Chang transforms them creatively by instilling her own experience and acute artistry.

  9. Breaking the host range: mandarin fish is susceptible to a vesiculovirus derived from snakehead fish.

    Science.gov (United States)

    Liu, Xiaodan; Wen, Yi; Hu, Xianqin; Wang, Wenwen; Liang, Xufang; Li, Jun; Vakharia, Vikram; Lin, Li

    2015-04-01

    Members of the genus Vesiculovirus, which belongs to the family Rhabdoviridae, can cause great economic loss in fish culture. In the present report, a vesiculovirus [named snakehead fish vesiculovirus (SHVV)] was isolated from diseased hybrid snakehead fish. SHVV shared 94 % nucleotide sequence identity at the genomic level with Siniperca chuatsi rhabdovirus (SCRV), which infects mandarin fish (S. chuatsi). We showed that SHVV was able to replicate and proliferate well in SSN-1 cells, which originate from striped snakehead fish (Channa striatus). Furthermore, mandarin fish was susceptible to SHVV by bath exposure, as well as by intraperitoneal injection. The infected fish showed typical clinical signs of rhabdovirus infection, including haemorrhage and oedema. Histopathological analysis revealed that extensive inflammation and necrosis were observed in the spleen, kidney, liver, heart and brain of the moribund mandarin fish. These results will shed new light on the epidemic of vesiculovirus infections among fish.

  10. Molecular characterization of eight Indian Snakehead species (Pisces: Perciformes Channidae) using RAPD markers.

    Science.gov (United States)

    Bhat, Ajaz Ali; Haniffa, M A; Divya, P R; Gopalakrishnan, A; Milton, M James; Kumar, Raj; Paray, Bilal Ahmad

    2012-04-01

    Murrels (Perciformes; Channidei; Channidae) are unique group of freshwater air breathing fishes having a confined distribution to African and Asian continents. The phylogenetic relationship among eight Channid species viz. Channa aurantimaculata, Channa bleheri, Channa diplogramma, Channa gachua, Channa marulius, Channa punctatus, Channa stewartii and Channa striatus were investigated using RAPD markers. Eight random oligodecamers viz. OPAC03, OPAC05, OPAC07, OPAC09, OPAC19, OPA10, OPA11 and OPA16 were used to generate the RAPD profile. Estimates of Nei's (Genetics, 89:583-590, 1978) unbiased genetic distance (D) demonstrated sufficient genetic divergence to discriminate the samples of different species and the values ranged from 0.3292 to 0.800 The present RAPD analyses strongly substantiate the view of earlier morphological and osteological studies of Channid species, the closer association among species in "gachua" and "marulius" groups.

  11. Influence of the drying method in the antioxidant potential and chemical composition of four shrubby flowering plants from the tribe Genisteae (Fabaceae).

    Science.gov (United States)

    Pinela, José; Barros, Lillian; Carvalho, Ana Maria; Ferreira, Isabel C F R

    2011-11-01

    Flowers from several common Mediterranean shrubs, such as those from the Cytisus genus and Genista genus (tribe Genisteae/Fabaceae) have long been used for medicinal purposes and seasoning in the northeastern Portuguese region. Despite, the shade-drying traditionally used to process these plants, freeze-drying is claimed to better preserve the quality of medicinal plants. Herein, the effects of drying process in the antioxidants composition and properties of Cytisus multiflorus, Cytisus scoparius, Cytisus striatus and Pterospartum tridentatum were evaluated. Freeze-dried P. tridentatum revealed the highest antioxidant properties (EC(50) values ≤ 0.15 mg/ml). Freeze-drying benefits were confirmed showing, the samples submitted to this process, higher antioxidant activity and higher concentrations of hydrophilic (phenolics, ascorbic acid and sugars) and lipophilic (tocopherols, chlorophylls and lycopene) compounds. This process could be applied in scale-up treatments of the studied plants for cosmetic or pharmaceutical applications.

  12. Nasal mites of the subfamily Speleognathinae (Ereynetidae) from birds in Texas.

    Science.gov (United States)

    Pence, D B; Casto, S D

    1976-06-01

    Nasal mites of the subfamily Speleognathinae were recovered from several species of birds in Texas. New host records include Ophthalmophagus striatus (Crossley) 1952 from Columbigallina passerina, Boydaia clarki Fain 1963 from Callipepla squamata, Boydaia falconis Fain 1956 from Falco sparverius, and Boydaia tyrannus Ford 1959 from Myiarchus cinerascens. Also recovered was Astrida coccyzae Pence 1972 from Coccyzus americanus. Boydaia pheucticola sp. n. from Pheucticus melanocephalus is described. It differs from similar species in the adult female by having the coxal setae formula 2-1-2-0, sensillae clavate but not globose or subglobose, and interior seta on coxa I reduced in size but not vestigial. The larva is differentiated by the modified legs II with one long recurved hooklike claw and a shorter curved claw.

  13. Variabilidade genética interespecífica em formigas cortadeiras do gênero Acromyrmex que ocorrem no Estado do Rio Grande do Sul Inter-specific genetic variability of leaf cutting ants (Acromyrmex genus from Rio Grande do Sul State

    Directory of Open Access Journals (Sweden)

    Douglas Daniel Grutzmacher

    2007-08-01

    Full Text Available São poucos os taxonomistas que atuam na identificação de formigas cortadeiras. Os métodos morfométricos utilizados nem sempre permitem uma identificação confiável, em função do acentuado polimorfismo dentro do mesmo formigueiro. O objetivo do trabalho foi testar a possibilidade do uso da ferramenta da biologia molecular para auxiliar na identificação das espécies de formigas cortadeiras do gênero Acromyrmex que ocorrem no Estado do Rio Grande do Sul. O estudo foi realizado com seis espécies de formigas do gênero Acromyrmex coletadas em quatro regiões do RS. Utilizaram-se as técnicas RAPD e AFLP, testando-se inicialmente 50 primers, dos quais apenas 13 foram selecionados por terem amplificado com sucesso fragmentos de todas as espécies estudadas. Embora os 13 primers selecionados tenham produzido fragmentos que permitem várias alternativas de seu uso para a identificação das espécies A. heyeri, A. ambiguus, A. crassispinus, A. striatus, A. laticeps e A. aspersus, a identificação das mesmas poderá ser realizada utilizando-se apenas os primers UBC 354, UBC 348 e UBC 356, que apresentaram fragmentos bem visíveis, que permitem uma identificação segura. Os resultados obtidos com o dendograma e as características morfológicas analisadas mostram que as espécies A. striatus e A. laticeps são menos relacionadas com as demais espécies estudadas, enquanto maior proximidade genética foi observada entre as espécies A. ambiguus e A. crassispinus. Através deste trabalho, pode-se concluir que a identificação das espécies de Acromyrmex pode ser realizada de maneira segura pelas técnicas RAPD e AFLP.At present, a few number of taxonomists work on identification of leaf cutting ants. Morphological-based methods do not always produce a reliable identification, due to the strong polymorphism observed even in the same colony. This fact leads to hypothesize that, besides those variations, others may also occur related to

  14. Macrofungi in the lateritic scrub jungles of southwestern India

    Directory of Open Access Journals (Sweden)

    A. A. Greeshma

    2015-09-01

    Full Text Available A pilot study on macrofungi in scrub jungles (with and without fire-impact in lateritic region of southwestern coast of India was carried out.  Out of 11 species in 10 genera recovered, six and five species were confined to scrub jungle and fire-impacted scrub jungle, respectively.  An ectomycorrhizal Amanita sp. was the most frequent in scrub jungle associated with exotic (Acacia auriculiformis and A. mangium and plantation (Anacardium occidentale trees.  Based on traditional knowledge, it is a highly edible and nutritional delicacy in the coastal regions.  Astraeus odoratus was another common ectomycorrhizal fungus in native trees Hopea ponga, which was recovered from the fire-impacted scrub jungle and is possibly edible.  Edible termite mound mushroom Termitomyces striatus was also common in the fire-impacted scrub jungle.  Chlorophyllum molybdites was the most frequent mushroom in the fire-impacted scrub jungle.  

  15. Distribution and Diversity of the Cryptic Ant Genus Oxyepoecus (Hymenoptera: Formicidae: Myrmicinae in Paraguay with Descriptions of Two New Species

    Directory of Open Access Journals (Sweden)

    T. Delsinne

    2012-01-01

    Full Text Available We discuss the diversity and distribution of the ant genus Oxyepoecus in Paraguay. Oxyepoecus inquilinus is recorded for the first time, and new distribution data are given for O. rastratus and O. vezenyii. Published data for O. bruchi, O. rastratus, O. reticulatus, and O. vezenyii are summarized. Two new species are described (O. bidentatus n. sp. and O. striatus n. sp., and a key to the workers of the seven Paraguayan Oxyepoecus species is provided. At Teniente Enciso National Park, four species cooccur. This locality appears as a promising site for studies documenting the biology of this poorly known ant genus, and because of the IUCN “vulnerable“ Red List classification of O. inquilinus, the importance of the Teniente Enciso National Park for biological conservation is clearly established.

  16. Small mammals of the Addo Elephant National Park

    Directory of Open Access Journals (Sweden)

    P. Swanepoel

    1975-07-01

    Full Text Available A survey of the small mammals of the Addo Elephant National Park resulted in a checklist, as well as information on relative numbers, distribution within the Park, reproductive activity, sex ratios, and body measurements. Forty mammals species occur in the Park, while three re-introduced species probably do not occur any longer. Of the 40 species 28 are considered small mammals comprising 13 rodent, eight carnivore, two shrew, two bat, one primate and one lagomorph species, as well as the aardvark: Crociduraflavescens, C. cyanea infumata, Rousettus aegyptiacus, Eptesicus capensis, Cercopithecus pygerythrus, Canis mesomelas, Ictonyx striatus, Poecilogale albinucha, Genetta sp., Herpestes pulverulentus, Suricata suricatta, Proteles cristatus, Felis caracal, Orycteropus afer, Lepus saxatilis, Cryptomys hottentotus, Hystrix africae-australis, Pedetes capensis, Graphiurus murinus, Aethomys namaquensis, Praomys natalensis, Rhabdomys pumilio, Mus minutoides, Rattus rattus, Saccostomys campestris, Desmodillus auricularis, Otomys irroratus and 0. unisulcatus.

  17. Notes on breeding sharp-shinned hawks and Cooper’s hawks in Barnwell County, South Carolina.

    Energy Technology Data Exchange (ETDEWEB)

    Vukovich, Mark; Kilgo, John, C.

    2009-07-01

    Abstract - Breeding records of Accipiter striatus (Sharp-shinned Hawks) in the southeastern US are scattered and isolated. We documented a Sharp-shinned Hawk and Accipiter cooperii (Cooper’s Hawk) nest while conducting a telemetry study on Melanerpes erythrocephalus (Red-headed Woodpeckers) in Barnwell County, SC in 2006 and 2007. We report the first known nest of a Sharp-shinned Hawk in Barnwell County, SC and the first report of Sharp-shinned Hawks preying upon Red-headed Woodpeckers. Thirteen of 93 (13.9 %) woodpeckers were killed by accipiters in the summers of 2006 and 2007. Large, contiguous forests managed for Picoides borealis (Red-cockaded Woodpeckers) may be used by breeding Sharp-shinned Hawks. The bright plumage, loud calls, and behavior of Red-headed Woodpeckers, particularly during the nestling stage, may make them conspicuous prey for accipiters.

  18. Recent trends in counts of migrant hawks from northeastern North America

    Science.gov (United States)

    Titus, K.; Fuller, M.R.

    1990-01-01

    Using simple regression, pooled-sites route-regression, and nonparametric rank-trend analyses, we evaluated trends in counts of hawks migrating past 6 eastern hawk lookouts from 1972 to 1987. The indexing variable was the total count for a season. Bald eagle (Haliaeetus leucocephalus), peregrine falcon (Falco peregrinus), merlin (F. columbarius), osprey (Pandion haliaetus), and Cooper's hawk (Accipiter cooperii) counts increased using route-regression and nonparametric methods (P 0.10). We found no consistent trends (P > 0.10) in counts of sharp-shinned hawks (A. striatus), northern goshawks (A. gentilis) red-shouldered hawks (Buteo lineatus), red-tailed hawks (B. jamaicensis), rough-legged hawsk (B. lagopus), and American kestrels (F. sparverius). Broad-winged hawk (B. platypterus) counts declined (P hawks are a useful and economical method for detecting long-term trends in species across regions, particularly for species that otherwise cannot be easily surveyed.

  19. Behaviour of alpha-, beta-, gamma-, and delta-hexachlorocyclohexane in the soil-plant system of a contaminated site.

    Science.gov (United States)

    Calvelo Pereira, R; Camps-Arbestain, M; Rodríguez Garrido, B; Macías, F; Monterroso, C

    2006-11-01

    The behaviour of the organochlorine pesticide hexachlorocyclohexane (HCH) is investigated. The concentrations of alpha-, beta-, gamma-, and delta-HCH isomers were measured in soils, rhizosphere and vegetation in a contaminated area in Galicia (NW Spain). The total concentration of HCH in soils reached values close to 20,000 mgkg(-1). The plants analysed (Avena sativa L., Chenopodium spp., Solanum nigrum L., Cytisus striatus (Hill) Roth, and Vicia sativa L.) accumulated HCH, especially the beta-HCH isomer, in their tissues. The most likely mechanisms of HCH accumulation in plants were sorption of soil HCH on roots and sorption of volatilized HCH on aerial plant tissues. The concentrations of HCH obtained from the bulk and rhizosphere soils of selected plant species suggest that roots tend to reduce levels of the HCH isomers in the rhizosphere. The results reflect the importance of vegetation in the distribution of organochlorine compounds in the soil-plant system.

  20. Lichen planus and other lichenoid dermatoses: Kids are not just little people.

    Science.gov (United States)

    Payette, Michael J; Weston, Gillian; Humphrey, Stephen; Yu, JiaDe; Holland, Kristen E

    2015-01-01

    Lichenoid dermatoses, a group of inflammatory skin conditions with characteristic clinical and histopathologic findings, range from common to rare. Classic lichen planus typically presents as pruritic, polygonal, violaceous flat-topped papules and plaques; many variants in morphology and location also exist. Other lichenoid dermatoses share similar clinical presentations and histopathologic findings. These include lichenoid drug eruption, lichen planus-like keratosis, lichen striatus, lichen nitidus, and keratosis lichenoides chronica. Epidemiologic characteristics vary among each lichenoid disorder. While classic lichen planus is considered a disease of adults, other lichenoid dermatoses may be more common in younger populations. The literature contains an array of reports on the variations in presentation and successful management of lichen planus and lichenoid dermatoses among diverse populations. Familiarity with the characteristics of each lichenoid dermatosis, rare or common within each patient population, is key to accomplishing timely recognition and effective management.

  1. 溪黄草微滴丸的制备

    Institute of Scientific and Technical Information of China (English)

    钱韵旭; 曾宇

    2003-01-01

    @@ 溪黄草为唇形科植物线纹茶菜[Isodon striatus(Benth.)Kudo]的地上部分,含黄酮苷、氨基酸、酚类、有机酸等.原来为民间用药,有清热利湿褪黄、凉血散淤的功效.近年来,溪黄草的应用越来越普遍,常用于黄疸性肝炎、急性胆囊炎等症.目前溪黄草成药制剂十分有限,仅有简单的口服液、颗粒剂和片剂.

  2. 溪黄草口服液制备及稳定性初步研究

    Institute of Scientific and Technical Information of China (English)

    赖善城

    1999-01-01

    @@ 溪黄草口服液由溪黄草汤剂改进而成.溪黄草[Isodon Striatus (Benth.) Kudo]具有清热利湿、凉血散瘀的功效,性味苦、甘、凉,临床上主要用于治疗急性黄胆型肝炎、急性胆囊炎、痢疾、肠炎等,该口服液中主要成分之一为黄酮苷[1].廖雪珍等[2]研究表明:溪黄草水提物有抗炎保肝的作用.本文对其制备及质量控制进行研究,并以总黄酮含量为指标对其稳定性进行了初步研究.

  3. Nematodos del orden Rhabditida de Andalucía Oriental. El género Eucephalobus Steiner, 1936

    Directory of Open Access Journals (Sweden)

    Peña-Santiago, Reyes

    2002-06-01

    Full Text Available Abundant material belonging to the genus Eucephalobus Steiner, 1936, collected in soils mainly from natural areas of Andalucía Oriental (SE Iberian Peninsula, yielded four species that are studied in this paper: E. hooperi Marinari-Palmisano, 1967, E. mucronatus (Kozlowska et Roguska-Wasilewska, 1963 Andrássy, 1967, E. oxyuroides (De Man, 1876 Steiner, 1936 y E. striatus (Bastian, 1865 Thorne, 1937. All the species are described in detail, and both illustrations, including SEM photographs, and tables for their measurements are also provided. A brief discussion on these and other Iberian species of the genus is made, and a key to species identification is given. E. hooperi is recorded for the first time in the Iberian Peninsula.En este trabajo se estudian cuatro especies pertenecientes al género Eucephalobus Steiner, 1936 que han sido recolectadas en numerosas localidades de Andalucía Oriental, principalmente en suelos de áreas naturales. Dichas especies son: E. hooperi Marinari-Palmisano, 1967, E. mucronatus (Kozlowska et Roguska-Wasilewska, 1963 Andrássy, 1967, E. oxyuroides (De Man, 1876 Steiner, 1936 y E. striatus (Bastian, 1865 Thorne, 1937. De todas las especies se presenta una detallada descripción, la cual se acompaña de tablas con datos morfométricos, y de ilustraciones que incluyen fotografías obtenidas con el microscopio electrónico de barrido. Por último, se realiza una discusión sobre las especies ibéricas del género y se elabora una clave para su identificación. E. hooperi es una nueva cita para la fauna ibérica.

  4. Effects of Recent Climate Change on Facultative and Spontaneous Torpor in Apline Habitats

    Science.gov (United States)

    Frank, C. L.; Hood, W. R.; Stevens, M.; Gary, G.

    2007-12-01

    Mean annual air temperatures have increased in North America by 1.0°C during the past 100 years, and are predicted to increase by 4-8 °C further within the next 70 years. Hibernating mammals may be particularly sensitive to climate change since body temperatures during torpor are strongly influence by ambient temperature. We conducted 3-7 year studies on the relationship between ambient (air/soil) temperature and the torpor patterns of free-ranging facultative and spontaneous hibernators. The facultative hibernation of eastern chipmunks (Tamias striatus) in New York State and the spontaneous hibernation by golden-mantled ground squirrels (Spermophilus lateralis) in the mountains of California were continuously monitored using temperature sensitive radiocollars during winters of 2000-01 through 2006-07. Mean air/soil temperatures during the winter 2001-02 were much greater than those observed during the same periods of 2000-1 and 2002-3 winters at both sites, and the winter of 2001-2 was one of the warmest measured in both New York State and California since 1895. Consequently T. striatus during the winter 2001-2 had: a) fewer individuals using torpor, b) reduced the time spent in torpor by 96%, and, c) increased energy expenditure by 100% when compared to the torpor patterns of the same population during the colder winters of 2000-1/2002-3. Likewise, S. lateralis during the winter of 2001-2 had: a) delayed the entrance into hibernation by a mean of 12.2 days, b) increased mean body temperatures by an average of 5.4 C during torpor, and, c) increased metabolic rate during torpor by 75% when compared to the torpor patterns of the same population during the winters of 2000-1/2002-3.

  5. Differences in the activities of eight enzymes from ten soil fungi and their possible influences on the surface structure, functional groups, and element composition of soil colloids.

    Science.gov (United States)

    Wang, Wenjie; Li, Yanhong; Wang, Huimei; Zu, Yuangang

    2014-01-01

    How soil fungi function in soil carbon and nutrient cycling is not well understood by using fungal enzymatic differences and their interactions with soil colloids. Eight extracellular enzymes, EEAs (chitinase, carboxymethyl cellulase, β-glucosidase, protease, acid phosphatase, polyphenol oxidase, laccase, and guaiacol oxidase) secreted by ten fungi were compared, and then the fungi that showed low and high enzymatic activity were co-cultured with soil colloids for the purpose of finding fungi-soil interactions. Some fungi (Gomphidius rutilus, Russula integra, Pholiota adiposa, and Geastrum mammosum) secreted 3-4 enzymes with weak activities, while others (Cyathus striatus, Suillus granulate, Phallus impudicus, Collybia dryophila, Agaricus sylvicola, and Lactarius deliciosus) could secret over 5 enzymes with high activities. The differences in these fungi contributed to the alterations of functional groups (stretching bands of O-H, N-H, C-H, C = O, COO- decreased by 11-60%, while P = O, C-O stretching, O-H bending and Si-O-Si stretching increased 9-22%), surface appearance (disappearance of adhesive organic materials), and elemental compositions (11-49% decreases in C1s) in soil colloids. Moreover, more evident changes were generally in high enzymatic fungi (C. striatus) compared with low enzymatic fungi (G. rutilus). Our findings indicate that inter-fungi differences in EEA types and activities might be responsible for physical and chemical changes in soil colloids (the most active component of soil matrix), highlighting the important roles of soil fungi in soil nutrient cycling and functional maintenance.

  6. The highly successful safe remediation of the Fernald waste pits undertaken under the privatization model

    Energy Technology Data Exchange (ETDEWEB)

    Cherry, Mark; Lojek, Dave; Murphy, Con

    2003-02-23

    Remediation of eight waste pits at the Department of Energy (DOE) Fernald site, located northwest of Cincinnati, Ohio, involves excavating approximately one million tonnes in-situ of low-level waste which were placed in pits during Fernald's production era. This unique project, one of the largest in the history of CERCLA/Superfund, includes uranium and thorium contaminated waste, soils and sludges. These wet soils and sludges are thermally dried in a processing facility to meet Department of Transportation (DOT) transportation and disposal facility waste acceptance criteria, loaded into railcars and shipped to the Envirocare waste disposal facility at Clive, Utah. This project is now approximately 60% complete with more than 415,000 tonnes (460,000 tons) of waste material safely shipped in 74 unit trains to Envirocare. Work is scheduled to be completed in early 2005. Success to date demonstrates that a major DOE site remediation project can be safely and successfully executed in partnership with private industry, utilizing proven commercial best practices, existing site labor resources and support of local stakeholders. In 1997 under the DOE's privatization initiative, Fluor Fernald, Inc. (Fluor Fernald) solicited the services of the remediation industry to design, engineer, procure, construct, own and operate a facility that would undertake the remediation of the waste pits. The resulting procurement was awarded to IT Corporation, currently Shaw Environmental and Infrastructure, Inc. (Shaw). The contractor was required to finance the procurement and construction of its facilities and infrastructure. The contract was performance-based and payment would be made on the successful loadout of the waste from the facility on a per-ton basis meeting the Envirocare waste acceptance criteria. This paper details the performance to date, the challenges encountered, and the seamless partnering between DOE, the Environmental Protection Agency (EPA), Fluor Fernald

  7. Improving the estimation of hydrothermal state variables in the active layer of frozen ground by assimilating in situ observations and SSM/I data

    Institute of Scientific and Technical Information of China (English)

    2009-01-01

    The active layer of frozen ground data assimilation system adopts the SHAW (Simulteneous Heat and Water) model as the model operator. It employs an ensemble kalman filter to fuse state variables predicted by the SHAW model with in situ observation and the SSM/I 19 GHz brightness temperature for the purpose of optimizing model hydrothermal state variables. When there is little water movement in the frozen soil during the winter season, the unfrozen water content depends primarily on soil temperature. Thus, soil temperature is the crucial state variable to be improved. In contrast, soil moisture is heavily influenced by precipitation during the summer season. The simulation accuracy of soil moisture has a strong and direct impact on the soil temperature. In this case, the crucial state variable to be improved is soil moisture. One-dimensional assimilation experiments that have been carried out at AMDO station show that land data assimilation method can improve the estimation of hydrothermal state variables in the soil by fusing model information and observation information. The reasonable model error covariance matrix plays a key role in transferring the optimized surface state information to the deep soil, and it provides improved estimations of whole soil state profiles. After assimilating the 4-cm soil temperature by in situ observation, the soil temperature RMSE (Root Mean Square Error) of each soil layer decreased by 0.96℃ on average relative to the SHAW simulation. After assimilating the 4-cm soil moisture in situ observation, the soil moisture RMSE of each soil layer decreased by 0.020 m3·m-3. When assimilating the SSM/I 19 GHz brightness temperature, the soil temperature RMSE of each soil layer during the winter decreased by 0.76℃, while the soil moisture RMSE of each soil layer during the summer decreased by 0.018 m3·m-3.

  8. Land Surface Model and Particle Swarm Optimization Algorithm Based on the Model-Optimization Method for Improving Soil Moisture Simulation in a Semi-Arid Region.

    Directory of Open Access Journals (Sweden)

    Qidong Yang

    Full Text Available Improving the capability of land-surface process models to simulate soil moisture assists in better understanding the atmosphere-land interaction. In semi-arid regions, due to limited near-surface observational data and large errors in large-scale parameters obtained by the remote sensing method, there exist uncertainties in land surface parameters, which can cause large offsets between the simulated results of land-surface process models and the observational data for the soil moisture. In this study, observational data from the Semi-Arid Climate Observatory and Laboratory (SACOL station in the semi-arid loess plateau of China were divided into three datasets: summer, autumn, and summer-autumn. By combing the particle swarm optimization (PSO algorithm and the land-surface process model SHAW (Simultaneous Heat and Water, the soil and vegetation parameters that are related to the soil moisture but difficult to obtain by observations are optimized using three datasets. On this basis, the SHAW model was run with the optimized parameters to simulate the characteristics of the land-surface process in the semi-arid loess plateau. Simultaneously, the default SHAW model was run with the same atmospheric forcing as a comparison test. Simulation results revealed the following: parameters optimized by the particle swarm optimization algorithm in all simulation tests improved simulations of the soil moisture and latent heat flux; differences between simulated results and observational data are clearly reduced, but simulation tests involving the adoption of optimized parameters cannot simultaneously improve the simulation results for the net radiation, sensible heat flux, and soil temperature. Optimized soil and vegetation parameters based on different datasets have the same order of magnitude but are not identical; soil parameters only vary to a small degree, but the variation range of vegetation parameters is large.

  9. Adsorción de fósforo en algunos suelos argentinos : 1-condiciones experimentales e isotermas de adsorción

    OpenAIRE

    1984-01-01

    p.165-174 Se estudió la influencia sobre los procesos de adsorción de las siguientes condiciones experimentales: relación suelo-solución, tiempo de agitación, tratamientos con cloroformo y temperatura. La mayor adsorción correspondió a la menor relación suelo: solución, al mayor tiempo de agitación, al tratamiento sin cloroformo y a la mayor temperatura. Siguiendo la técnica de Ozanne y Shaw, se efectuaron las curvas de adsorción de 16 suelos y se calculó la capacidad reguladora de fosfato...

  10. Cercospora and Allied Genera in China (Ⅴ)%中国尾孢菌属及其近似属的研究(Ⅴ)

    Institute of Scientific and Technical Information of China (English)

    郭英兰

    2000-01-01

    报道3个中国新记录种:寄生在豆科Leguminosae植物上的葛尾孢Cercospora austrinae Chupp&Viegas和决明尾孢Cercospora cassiocarpa Chupp及寄生在牻牛儿苗科Geraniaceae植物上的老鹳草色链隔孢Phaeoramularia keranii(W.B.Cooke&C.G.Shaw)U.Braun.文中为3个种提供了形态描述.研究的标本保藏在中国科学院微生物研究所菌物标本馆(HMAS).

  11. Quantum mechanics

    CERN Document Server

    Mandl, Franz

    1992-01-01

    The Manchester Physics Series General Editors: D. J. Sandiford; F. Mandl; A. C. Phillips Department of Physics and Astronomy, University of Manchester Properties of Matter B. H. Flowers and E. Mendoza Optics Second Edition F. G. Smith and J. H. Thomson Statistical Physics Second Edition F. Mandl Electromagnetism Second Edition I. S. Grant and W. R. Phillips Statistics R. J. Barlow Solid State Physics Second Edition J. R. Hook and H. E. Hall Quantum Mechanics F. Mandl Particle Physics Second Edition B. R. Martin and G. Shaw The Physics of Stars Second Edition A. C. Phillips Computing for Scient

  12. Reseñas

    OpenAIRE

    Anales de Literatura Española

    1987-01-01

    Contiene: A propósito de dos recientes ediciones de Don Álvaro ; DUQUE DE RIVAS D. Álvaro o La Fuerza del sino. Ed. Ermanno Caldera, Madrid, Taurus, 1986, 228 pp. Id. Ed. Donald L. Shaw, Madrid, Castalia, 1986, 181 pp. / Joaquín ÁLVAREZ BARRIENTOS ; Una teoría semiótica del texto narrativo ; CARMEN BOBES Teoría General de la Novela. Semiología de «La Regenta» Madrid, Gredos, 1985. / VALENTINA DE ANTONIO DOMÍNGUEZ ; Caballería y juego ; J. E. Ruiz DOMÉNEC El laberinto cortesano de ...

  13. Environmental radionuclides tracers and timers of terrestrial processes

    CERN Document Server

    Froehlich, Klaus

    2009-01-01

    The book presents a state-of-the-art summary of knowledge on the use of radionuclides to study processes and systems in the continental part of the Earth's environment. It is conceived as a companion to the two volumes of this series, which deal with isotopes as tracers in the marine environment (Livingston, Marine Radioactivity) and with the radioecology of natural and man-made terrestrial systems (Shaw, Radioactivity in Terrestrial Ecosystems). Although the book focuses on natural and anthropogenic radionuclides (radioactive isotopes), it also refers to stable environmental isotopes, which i

  14. IEEE Life Cycle Standards and the CMMI(Trademark) - Implementation Considerations

    Science.gov (United States)

    2008-06-16

    Maloney CH 1l43{) R. N. Haddad M5-689 D. C. Marvin M I-003 L. F. Halle CHI-530 L. S. Marvin M6-2W4 P. Hantos Ml-1 12 J. F. McNeil MI-178 FINAL...M4-021 R. P. Sena M5-688 H. M. Shao M8-691 B. E. Shaw M5-564 I. S. Shrater M3-432 F. J. Sisti M8-018 D. M. Speckamn M 1-003 B . Springsteen CH 1-402

  15. Preface: Special Issue of the 5th International Symposium on Biological and Environmental Chemistry of DMS(P) and Related Compounds, Goa, India, 19–22 October 2010

    Digital Repository Service at National Institute of Oceanography (India)

    Stefels, J.; Shenoy, D.M.; Simo, R.; Malin, G.; Levasseur, M.; Belviso, S.; DileepKumar, M.

    • Dileep Kumar Published online: 4 August 2012 � Springer Science+Business Media B.V. 2012 This Special Issue of Biogeochemistry contains a selection of papers presented at the 5th International Symposium on Biological and Environmental Chem- istry of DMS... will be held in Barcelona, Spain, will be announced soon. Two major publications in the 80s stimulated the work of this truly international DMS research com- munity. Shaw (1983) was the first to propose a link between ocean biota and Earth’s radiation budget...

  16. On the curvature of some free boundaries in higher dimensions

    CERN Document Server

    Gustafsson, Björn

    2011-01-01

    It is known that any subharmonic quadrature domain in two dimensions satisfies a natural inner ball condition, in other words there is a specific upper bound on the curvature of the boundary. This result directly applies to free boundaries appearing in obstacle type problems and in Hele-Shaw flow. In the present paper we make partial progress on the corresponding question in higher dimensions. Specifically, we prove the equivalence between several different ways to formulate the inner ball condition, and we compute the Brouwer degree for a geometrically important mapping related to the Schwarz potential of the boundary. The latter gives in particular a new proof in the two dimensional case.

  17. Concentration-dependent diffusion instability in reactive miscible fluids

    Science.gov (United States)

    Bratsun, Dmitry; Kostarev, Konstantin; Mizev, Aleksey; Mosheva, Elena

    2015-07-01

    We report on chemoconvective pattern formation phenomena observed in a two-layer system of miscible fluids filling a vertical Hele-Shaw cell. We show both experimentally and theoretically that the concentration-dependent diffusion coupled with frontal acid-base neutralization can give rise to the formation of a local unstable zone low in density, resulting in a perfectly regular cell-type convective pattern. The described effect gives an example of yet another powerful mechanism which allows the reaction-diffusion processes to govern the flow of reacting fluids under gravity conditions.

  18. INTERTEXTOS Y MEMORIA EN JUANA DE MANUELA INFANTE

    OpenAIRE

    2010-01-01

    La obra de Manuela Infante es una de las más interesantes del teatro chileno emergente de la última década, por su contenido autorreflexivo y amplio espectro de alusiones culturales. En su pieza Juana (2004) destacan las referencias a obras de Vicente Huidobro, Rodolfo Usigli y Bernard Shaw, que vinculan la concepción dramática de esta joven dramaturga chilena con los postulados estéticos y filosóficos de estos autores, en los que convergen arte, mito y memoria. Se estudiará la reelaboración ...

  19. Practical and ornamental knots

    CERN Document Server

    Shaw, George Russell

    2008-01-01

    For centuries, everyone from sailors, fishermen, and cowboys to explorers, hunters, and mountaineers have known about - and relied on - the indispensable knot. Many of them also knew that the diversity of knot crafting was limited only by the imagination. In this classic guide, George Russell Shaw reveals the unlimited potential of the knot as not only a basic tool, but as a beautiful work of art.Filled with easy-to-follow and accurate instructions on creating scores of useful and decorative knots, 193 hand-drawn illustrations will guide you in creating: Braids Angler Knots Japanese Knots L

  20. Nonlinear longitudinal oscillations of fuel in rockets feed lines with gas-liquid damper

    Science.gov (United States)

    Avramov, K. V.; Filipkovsky, S.; Tonkonogenko, A. M.; Klimenko, D. V.

    2016-03-01

    The mathematical model of the fuel oscillations in the rockets feed lines with gas-liquid dampers is derived. The nonlinear model of the gas-liquid damper is suggested. The vibrations of fuel in the feed lines with the gas-liquid dampers are considered nonlinear. The weighted residual method is applied to obtain the finite degrees of freedom nonlinear model of the fuel oscillations. Shaw-Pierre nonlinear normal modes are applied to analyze free vibrations. The forced oscillations of the fuel at the principle resonances are analyzed. The stability of the forced oscillations is investigated. The results of the forced vibrations analysis are shown on the frequency responses.

  1. On the Artistic Features of Bernard Shaw’s Plays

    Institute of Scientific and Technical Information of China (English)

    翁金

    2012-01-01

    George Bernard Shaw was an Irish playwright.And his representative plays were Widowers’ Houses,Mrs.Warren’s Profession,and Pygmalion and so on.He was honored as "Moliere of the 20th century"and awarded the Nobel Prize for Literature in 1925.This paper analyses the dialogues in Widowers’Houses to show Shaw’s unique method of characterization.we can also perceive Shaw’s humor through the contrast between the "true"and the"false"as is shown in the text and the plot of the play.

  2. Ecosystems and Climate Change. Research Priorities for the U.S. Climate Change Science Program

    Science.gov (United States)

    2006-06-01

    and ozone interactions ( Percy et al. 2002); CO2, warming, N deposition, and water augmentation on productivity (Shaw et al. 2002); and diversity... Percy , K., C. Awmack, R. Lindroth, M. Kubiske, B. Kopper, J. Isebrands, K. Pregitzer, G. Hundrey, R. Dickson, D. Zak, E. Oksanen, J. Sober, R...Sala, O.E., F.S.Chapin III, J.J. Armesto, E. Berlow, J. Bloomfield, R. Dirzo, E. Huber-Sanwald, L.F. Huenneke, R.B. Jackson , A. Kinzig, R. Leemans

  3. A kernel version of spatial factor analysis

    DEFF Research Database (Denmark)

    Nielsen, Allan Aasbjerg

    2009-01-01

    . Schölkopf et al. introduce kernel PCA. Shawe-Taylor and Cristianini is an excellent reference for kernel methods in general. Bishop and Press et al. describe kernel methods among many other subjects. Nielsen and Canty use kernel PCA to detect change in univariate airborne digital camera images. The kernel...... version of PCA handles nonlinearities by implicitly transforming data into high (even infinite) dimensional feature space via the kernel function and then performing a linear analysis in that space. In this paper we shall apply kernel versions of PCA, maximum autocorrelation factor (MAF) analysis...

  4. Statistical Physics

    CERN Document Server

    Mandl, Franz

    1988-01-01

    The Manchester Physics Series General Editors: D. J. Sandiford; F. Mandl; A. C. Phillips Department of Physics and Astronomy, University of Manchester Properties of Matter B. H. Flowers and E. Mendoza Optics Second Edition F. G. Smith and J. H. Thomson Statistical Physics Second Edition E. Mandl Electromagnetism Second Edition I. S. Grant and W. R. Phillips Statistics R. J. Barlow Solid State Physics Second Edition J. R. Hook and H. E. Hall Quantum Mechanics F. Mandl Particle Physics Second Edition B. R. Martin and G. Shaw The Physics of Stars Second Edition A. C. Phillips Computing for Scient

  5. Electromagnetism

    CERN Document Server

    Grant, Ian S

    1990-01-01

    The Manchester Physics Series General Editors: D. J. Sandiford; F. Mandl; A. C. Phillips Department of Physics and Astronomy, University of Manchester Properties of Matter B. H. Flowers and E. Mendoza Optics Second Edition F. G. Smith and J. H. Thomson Statistical Physics Second Edition F. Mandl Electromagnetism Second Edition I. S. Grant and W. R. Phillips Statistics R. J. Barlow Solid State Physics Second Edition J. R. Hook and H. E. Hall Quantum Mechanics F. Mandl Particle Physics Second Edition B. R. Martin and G. Shaw the Physics of Stars Second Edition A. C. Phillips Computing for Scient

  6. Stretching and folding mechanism in foams

    Energy Technology Data Exchange (ETDEWEB)

    Tufaile, Alberto [Escola de Artes, Ciencias e Humanidades, Soft Matter Laboratory, Universidade de Sao Paulo, 03828-000 Sao Paulo, SP (Brazil)], E-mail: tufaile@usp.br; Pedrosa Biscaia Tufaile, Adriana [Escola de Artes, Ciencias e Humanidades, Soft Matter Laboratory, Universidade de Sao Paulo, 03828-000 Sao Paulo, SP (Brazil)

    2008-10-13

    We have described the stretching and folding of foams in a vertical Hele-Shaw cell containing air and a surfactant solution, from a sequence of upside-down flips. Besides the fractal dimension of the foam, we have observed the logistic growth for the soap film length. The stretching and folding mechanism is present during the foam formation, and this mechanism is observed even after the foam has reached its respective maximum fractal dimension. Observing the motion of bubbles inside the foam, large bubbles present power spectrum associated with random walk motion in both directions, while the small bubbles are scattered like balls in a Galton board.

  7. Concentration-Dependent Diffusion Instability in Reactive Miscible Fluids

    CERN Document Server

    Bratsun, Dmitry; Mizev, Alexey; Mosheva, Elena

    2015-01-01

    We report new chemoconvective pattern formation phenomena observed in a two-layer system of miscible fluids filling a vertical Hele-Shaw cell. We show both experimentally and theoretically that the concentration-dependent diffusion coupled with the frontal acid-base neutralization can give rise to formation of the local unstable zone low in density resulting in a perfectly regular cell-type convective pattern. The described effect gives an example of yet another powerful mechanism which allows the reaction-diffusion processes to govern the flow of reacting fluids under gravity condition.

  8. Impacto de Leishmania amazonensis y la Sangre de Ave en el Potencial Biológico y Fecundidad de Lutzomyia migonei y Lutzomyia ovallesi (Diptera: Psychodidae)

    OpenAIRE

    2011-01-01

    En los flebótomos (Diptera: Psychodidae), la ingesta sanguínea es responsable de la inducción de varios procesos fisiológicos y es determinante en la transmisión de Leishmania Ross. El presente trabajo estudia la sangre de ave, de mamífero y mezclada con Leishmania amazonensis Lainson & Shaw sobre el potencial biológico de Lutzomyia migonei França y Lutzomyia ovallesi Ortiz. Se utilizaron hembras de ambas especies alimentadas arti...

  9. Phytochemicals - Bioactivities and Impact on Health

    DEFF Research Database (Denmark)

    Muller, C.J.F.; Joubert, E.; Gabuza, K.

    It has been estimated that diabetes will affect 439 million adults by 2030, with the major increase occurring in developing countries (Shaw et al., 2010). It is projected that it will rank as the 9th leading cause of death in low-income countries (Mathers & Loncar, 2006). There are two major type...... to plant families such as the Asteraceae and Lamiaceae, amongst others, have been traditionally used for the treatment of diabetes (Deutschländer et al., 2009; Erasto et al., 2005; Thring & Weitz, 2006)....

  10. Unified communications forensics anatomy of common UC attacks

    CERN Document Server

    Grant, Nicholas Mr

    2013-01-01

    Unified Communications Forensics: Anatomy of Common UC Attacks is the first book to explain the issues and vulnerabilities and demonstrate the attacks, forensic artifacts, and countermeasures required to establish a secure (UC) environment. This book is written by leading UC experts Nicholas Grant and Joseph W. Shaw II and provides material never before found on the market, including: analysis of forensic artifacts in common UC attacks an in-depth look at established UC technologies and attack exploits hands-on understanding of UC attack vectors and associated countermeasures

  11. Four new species of the Aleiodes compressor Herrich-Schäffer species-group (Hymenoptera: Braconidae: Rogadinae from South America

    Directory of Open Access Journals (Sweden)

    Lidia Sulca

    2016-12-01

    Full Text Available Four new species of the Aleiodes compressor (Herrich-Schäffer species-group from the Neotropical Region are described and illustrated: Aleiodes segakiato sp. nov. and A. lamasi sp. nov. from Peru, A. macro sp. nov. from Argentina, and A. palmito sp. nov. from Mexico. With the addition of these new species, the compressor species-group has ten known species; two from Old World, two from Nearctic Region, and six from Neotropical Region. In addition to the descriptions of the new species, a key to known species is presented, and a new distribution record for A. mantiqueirensis Shimbori, Shaw and Penteado-Dias from Ecuador is reported.

  12. Stretch flow of confined non-Newtonian fluids: nonlinear fingering dynamics.

    Science.gov (United States)

    Brandão, Rodolfo; Fontana, João V; Miranda, José A

    2013-12-01

    We employ a weakly nonlinear perturbative scheme to investigate the stretch flow of a non-Newtonian fluid confined in Hele-Shaw cell for which the upper plate is lifted. A generalized Darcy's law is utilized to model interfacial fingering formation in both the weak shear-thinning and weak shear-thickening limits. Within this context, we analyze how the interfacial finger shapes and the nonlinear competition dynamics among fingers are affected by the non-Newtonian nature of the stretched fluid.

  13. Controlling and minimizing fingering instabilities in non-Newtonian fluids.

    Science.gov (United States)

    Fontana, João V; Dias, Eduardo O; Miranda, José A

    2014-01-01

    The development of the viscous fingering instability in Hele-Shaw cells has great practical and scientific importance. Recently, researchers have proposed different strategies to control the number of interfacial fingering structures, or to minimize as much as possible the amplitude of interfacial disturbances. Most existing studies address the situation in which an inviscid fluid displaces a viscous Newtonian fluid. In this work, we report on controlling and minimizing protocols considering the situation in which the displaced fluid is a non-Newtonian, power-law fluid. The necessary changes on the controlling schemes due to the shear-thinning and shear thickening nature of the displaced fluid are calculated analytically and discussed.

  14. Center for the Study of Traumatic Stress

    Science.gov (United States)

    2008-01-01

    written by Dr. Ursano with Dr. Jon Shaw of the University of Miami, a commentary on recent work in the UK on deployment by Drs. Ursano, Engel and... Gruber , M., Jones R.T., King D.W., King L.A., McNally, R.J., Ursano R.J., Petukhova M., Kessler R. Exposure to Hurricane Related Stressors and...GABA Release in Juvenile Rat Basolateral Amygdala. Neuropsychopharmacology, (in press), 2008. Kessler RC, Galea S, Gruber MJ, Simpson NA, Ursano RJ

  15. Defense Small Business Innovation Research Program (SBIR). Volume 2. Navy Abstracts of Phase 1 Awards 1991

    Science.gov (United States)

    1991-01-01

    Phone: (408) 734-2400 PI: Dr. Paul Cowell Title: Tactical Cryptologic Exploitation of Over-TheHorizon (OTH) Radar Abstract: Navy combatant ships have a...ARLINGTON, VA 15 CoAntract . N60530-91-C-0283 Phone: (03) 751-3422 1: Philp A. Shaw M Title: Deformable Control Surfices with Shape Manory Alloy Aetuatoru...LABORATORIES, INC. DARPA 91-235 SDIO 91-004 SCIENCE AND APPLIED TECHNOLOGY, INC. RUDOLF, PAUL G. AI 91-090 AF 91-059 SCIENCE AND ENGINEERING ASSOC. S-TRON DNA 91

  16. Some flows in shape optimization

    CERN Document Server

    Cardaliaguet, Pierre; 10.1007/s00205-006-0002-z

    2010-01-01

    Geometric flows related to shape optimization problems of Bernoulli type are investigated. The evolution law is the sum of a curvature term and a nonlocal term of Hele-Shaw type. We introduce generalized set solutions, the definition of which is widely inspired by viscosity solutions. The main result is an inclusion preservation principle for generalized solutions. As a consequence, we obtain existence, uniqueness and stability of solutions. Asymptotic behavior for the flow is discussed: we prove that the solutions converge to a generalized Bernoulli exterior free boundary problem.

  17. Pygmalion: Arousal of Consciousness in Women's Rights

    Institute of Scientific and Technical Information of China (English)

    张丽涛

    2009-01-01

    Pygmalion is written by George Bernard Shaw, who is famous for enlightening the western feminist literature and criticism. This thesis discusses the independence of a flower girl, Eliza Doolittle, who learned language from a phonetics expert, Professor Higgins. She was transformed into a proper lady by correcting her pronunciations and manners. But she found that language was not important to a person' s identity for she was stir treated as a flower girl. So she decided to strive for her own rights of being independent and calling for equality.

  18. Fermi LAT detection of the first GeV gamma-ray flare from the BL Lac object TXS 2241+406

    Science.gov (United States)

    Buson, Sara

    2015-02-01

    The Large Area Telescope (LAT) onboard the Fermi Gamma-ray Space Telescope, has observed for the first time on daily timescales gamma-ray outburst activity from a source positionally consistent with the BL Lac object TXS 2241+406 (a.k.a.3FGL J2244.1+4057, Acero et al. 2015, arXiv:1501.02003) at RA=341.05305 deg, Dec=40.95378 deg (J2000, Beasley et al. 2002, ApJS, 141, 13) with redshift z=1.171 (Shaw et al. 2012, ApJ, 748, 49).

  19. Crystal Growth and Fluid Mechanics Problems in Directional Solidification

    Science.gov (United States)

    Tanveer, Saleh A.; Baker, Gregory R.; Foster, Michael R.

    2001-01-01

    Our work in directional solidification has been in the following areas: (1) Dynamics of dendrites including rigorous mathematical analysis of the resulting equations; (2) Examination of the near-structurally unstable features of the mathematically related Hele-Shaw dynamics; (3) Numerical studies of steady temperature distribution in a vertical Bridgman device; (4) Numerical study of transient effects in a vertical Bridgman device; (5) Asymptotic treatment of quasi-steady operation of a vertical Bridgman furnace for large Rayleigh numbers and small Biot number in 3D; and (6) Understanding of Mullins-Sererka transition in a Bridgman device with fluid dynamics is accounted for.

  20. The return branch of viscous fingers

    CERN Document Server

    Vera, F

    2005-01-01

    We report a simple experiment of two-dimensional pattern formation in a circular Hele-Shaw cell, showing the appearance of a return branch that is equivalent to the upward-connecting leader of lightning. Injecting water from the center into a foam filled cell, we obtained patterns similar to dendrites of two-dimensional dielectric breakdown experiments. When we repeat this experiment allowing the presence of water in the outer (low pressure) region, dendrites grow initially as in a normal experiment, but when a branch is near the outer boundary, the low pressure water begins to penetrate the foam against the pressure field, forming several return branches.

  1. Vibration Suppression Strategies for Large Tension-Aligned Array Structures

    Science.gov (United States)

    2013-11-19

    constraint in Eq.(31) remains the same. This control scheme is shown in Fig.16. Based on previous work done by Nudehi, et al. [33] and Issa , et al. [34...Optimal Joint Placement and Modal Disparity in Control of Flexible Structures”, Computers and Structures, 86(13-14), pp. 1456-1462. [17] Issa , J...Multidiscilinary Optimization, 31(1), pp.1-7. [22] Issa , J., Mukherjee, R., Diaz, A. R. and Shaw, S. W., 2008, “Modal Disparity and its Experi- mental

  2. Contributions to the study of the Holarctic fauna of Microgastrinae (Hymenoptera, Braconidae. I. Introduction and first results of transatlantic comparisons

    Directory of Open Access Journals (Sweden)

    Jose Fernandez-Triana

    2014-03-01

    Full Text Available Specimens of Microgastrinae (Hymenoptera: Braconidae from both sides of the Holarctic region (Nearctic and Palaearctic were sampled for DNA barcoding and examined morphologically. Two species are recorded for the first time for the Nearctic: Apanteles brunnistigma Abdinbekova, and Microgaster raschkiellae Shaw. Another European species, Apanteles xanthostigma (Haliday, previously introduced as a biological control agent, is confirmed to be present in North America. For another 13 species significant range extension is documented, including new records for France, Canada, United States, and Sweden. New host data are also provided for several species. The species name Apanteles masmithi Fernández-Triana is considered a syn. n. of Dolichogenidea britannica (Wilkinson.

  3. A Model for Educating Systems Engineers

    Science.gov (United States)

    2012-03-01

    M.D. Engelhart, E.J. Furst, W.H. Hill, and D. R. Krathwohl, Taxonomy of educational objectives the classification of educational goals handbook I... Educating Systems Engineers 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR( S ) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f...Shaw, “Advancing Software Engineering Professional Education ”, IEEE Software, vol. 23, no. 6, pp. 58-63, July/August 2011. [6] B.S. Bloom , B.S

  4. A SYSTEMATIC STUDY ON CHINESE SPECIES OF THE ANT GENUS OLIGOMYRMEX MAYR (HYMENOPTERA, FORMICIDAE)%中国稀切叶蚁属系统分类研究(膜翅目,蚁科)

    Institute of Scientific and Technical Information of China (English)

    徐正会

    2003-01-01

    Eighteen species of the ant genus Oligomyrmex Mayr have been recorded in China. Among them, 8 new species are described fromYunnan Province. Keys are provided for soldiers and workers respectively and the taxonomic history of Chinese species of the genus is reviewed. The 18 known species are: O. capreolus Wheeler, O. altinodus sp. nov. , O. curvispinus sp. nov., O. striatus sp. nov., O. acutispinus sp. nov., O. wheeleri Ettershank, O. obtusidentus sp. nov., O. bihornatus sp. nov., O. polyphemus Wheeler, O. sauteri Forel, O. taiponicus Wheeler, O. rectidorsus sp. nov., O. hunanensis Wu et Wang, O. reticapitus sp. nov., O. pseudolusciosus Wu et Wang, O. lusciosus Wheeler, O. jiangxiensis Wu et Wang and O. amius Forel.%记载中国稀切叶蚁属Oligomyrmex Mayr 18种,其中描述8新种.分别编制了兵蚁和工蚁的检索表.评论了该属中国种类的分类历史.18个已知种依次是卷须稀切叶蚁O.capreolus Wheele、高结稀切叶蚁O.altinodussp.nov.、弯刺稀切叶蚁O.curvispinus sp.nov.、条纹稀切叶蚁O.striatus sp.nov.、尖刺稀切叶蚁O.acutispinus sp.nov.、惠勒稀切叶蚁O.wheeleri Ettershank、钝齿稀切叶蚁O.obtusi-dentus sp.nov.、双角稀切叶蚁O.bihornatus sp nov、多音稀切叶蚁O.polyphemus Wheeler、邵氏稀切叶蚁O.sauteriForel、香港稀切叶蚁O taiponicus Wheeler、直背稀切叶蚁O.rectidorsus sp.nov.、湖南稀切叶蚁O.hunanensis Wu et Wang、纹头稀切叶蚁O.reticapitus sp nov、拟亮稀切叶蚁O pseudolusciosus Wu et Wang、光亮稀切叶蚁O.lusciosusWheeler、江西稀切叶蚁O.jiangxiensis Wu et Wang、阿美稀切叶蚁O.amius Forel.

  5. Mercury speciation in fish of the Cabo Frio upwelling region, SE-Brazil

    Directory of Open Access Journals (Sweden)

    Carlos Alberto da Silva

    2011-09-01

    Full Text Available Mercury distribution in the oceans is controlled by complex biogeochemical cycles, resulting in retention of trace amounts of this metal in marine biota. The impact of upwelling processes in this metal behavior has been overlooked. Data from literature are insufficient to evaluate the risks associated with the presence of mercury in the fish collected in upwelling areas and its consumers. Therefore, the aim of the present work was to perform a study of mercury speciation in four fish species belonging to different trophic levels from Cabo Frio-Brazil upwelling region. The total mercury content vary of 53 ng g-1 (Sardinella brasiliensis -sardine to 1215 ng g-1 (Cynoscion striatus -striped weakfish and, with exception of the planktivorous fish, methylmercury levels reaches circa 90% of total mercury concentration.A distribuição de Mercúrio nos oceanos é controlada por um complexo ciclo biogeoquímico, resultando na retenção de pequenas quantidades na biota marinha. O impacto dos processos de ressurgência costeira no comportamento desse metal tem sido negligenciado. Dados da literatura são insuficientes para elucidar o risco associado com a presença de mercúrio em peixes capturados em áreas de ressurgência e seus consumidores. Portanto o objetivo do presente trabalho foi realizar um estudo de especiação de mercúrio em quatro espécies de peixes pertencentes a diferentes níveis tróficos da região de ressurgência de Cabo Frio-Brasil. O conteúdo total de mercúrio variou de 53 ng g-1 (Sardinella brasiliensis -sardinha to 1215 ng g-1 (Cynoscion striatus -pescada e, com exceção da espécie planctivora, os níveis de metilmercúrio atingem cerca de 90% da concentração total de mercúrio.

  6. Characterizing spatial and temporal reef fisheries in Chinchorro Bank Biosphere Reserve, northern Mesoamerican Reef System Caracterización espacial y temporal de la pesquería en la Reserva de la Biosfera Banco Chinchorro, norte del Sistema Arrecifal Mesoamericano

    Directory of Open Access Journals (Sweden)

    José Manuel Castro-Pérez

    2011-08-01

    Full Text Available The main objective of this paper was to create a baseline for the spatial and temporal characterization of fisheries in the Chinchorro Bank Biosphere Reserve. Monthly records of one of three fishing cooperatives in the area were taken between August 2004 and June 2005. The individual length and weight of each fish species were recorded per boat. Catch per unit effort (CPUE was calculated as kilograms per fisherman per hour (kg-fisherman-1-hr-1. CPUE values for Epinephelus striatus, Mycteroperca bonaci, Lachnolaimus maximus and Sphyraena barracuda were highest in the "Nortes" (northerly-winds season due to increased fishing effort and to the fact that they were apparently caught in spawning aggregation sites. Generally, fishing at Chinchorro Bank exerts low to moderate ecological impact because fishing gear restrictions and fisheries are closely linked to the extraction of spiny lobster, a resource with a higher aggregated-value in contrast to reef fisheries.El objetivo principal de este artículo fue crear la línea base para la caracterización espacial y temporal de la pesquería en la Reserva de la Biosfera Banco Chinchorro. Registros mensuales de la captura de escama en una de las tres cooperativas en el área de estudio fueron realizados entre agosto de 2004 y junio de 2005. La longitud y el peso de los individuos de las especies de peces fueron registradas por embarcación. La Captura por Unidad de Esfuerzo (CPUE fue calculada como kilogramo por pescador por hora de pesca (kg-pescador-1-hr-1. Epinephelus striatus, Mycteroperca bonaci, Lachnolaimus maximus y Sphyraena barracuda presentaron los valores más altos de la CPUE en la época de "Nortes", lo cual está asociado al incremento en el esfuerzo de pesca y al hecho de que aparentemente fueron capturados en sus sitios de agregación reproductiva. Generalmente la pesca en Banco Chinchorro representa un impacto ecológico de bajo a moderado debido a las restricciones en los artes de pesca

  7. CROMOSOMAS DE MALVÁCEAS Chromosomes of Malvaceae

    Directory of Open Access Journals (Sweden)

    Aveliano Fernández

    2010-08-01

    Full Text Available

    En este trabajo se presentan los números cromosómicos de 50 accesiones de Malvaceae de
    Argentina, Bolivia, Brasil, Chile, México y Paraguay, las mismas representan 17 géneros y 40
    especies. Para las siguientes 28 especies se presenta el número cromosomico por primera
    vez: Cienfuegosia conciliata 2n=20, Hibiscus striatus 2n=52, H. adscensionis 2n=72,
    Phragmocarpidium Heringeri 2n=50, Malachra radiata 2n=56, Pavonia Friesii 2n=56, P.
    fruticosa 2n=56, P. subrotunda 2n=56, Monteiroa Reitzii 2n=20, Tarasa nototrichoides 2n=10,
    Tropidococcus pinnatipartitus 2n=24, Cristaria disssecta 2n=12, Gaya Bordasii 2n=12,
    Pseudabutilon cinereum 2n=16, Abutilon fluviatile 2n=16, A. laxum 2n=16, Wissadula Fadyenii
    2n=14, Sida vespertina 2n=14, S. Glaziovii2n=28, S. glomerata 2n=14, S. hirsutissima 2n=28,
    S. planicaulis 2n=28, S. Rodrigoi, 2n=28, S. ulmifolia 2n=28, S. Hatschbachii 2n=42, S. Reitzii
    2n=42, S. aggregata 2n=16, S. rufescens 2n=32
    Chromosome numbers are reported for 50 collections of Malvaceae from Argentina, Bolivia,
    Brasil, Chile, Mexico and Paraguay representing 17 genera and 40 species. First chromosome
    counts are reported for the following 28 species: Cienfuegosia conciliata 2n=20, Hibiscus
    striatus 2n=52, H. adscensionis 2n=72, Phragmocarpidium Heringeri 2n=50, Malachra radiata
    2n=56, Pavonia Friesii 2n=56, P. fruticosa 2n=56, P. subrotunda 2n=56, Monteiroa Reitzii
    2n=20, Tarasa nototrichoides 2n=10, Tropidococcus pinnatipartitus 2n=24, Chstaria disssecta
    2n=12, Gaya Bordasii 2n=12, Pseudabutilon cinereum 2n=16, Abutilon fluviatile 2n=16, A.
    laxum 2n=16, Wissadula Fadyenii 2n=14, Sida vespertina 2n=14, S. Glaziovii 2n=28, S.
    glomerata 2n=14, S. hirsutissima 2n=28, S. planicaulis 2n=28, S. Rodrigoi 2n=28, S. ulmifolia
    2n=28, S

  8. Study of the fluid dynamic and the efficiency of displacement in oil-water systems; Estudo da fluidodinamica e da eficiencia de deslocamento em sistemas agua-oleo

    Energy Technology Data Exchange (ETDEWEB)

    Fiorese, Eliana K.; Quadri, Marintho B.; Machado, Ricardo A.F.; Nogueira, Andre L.; Lopes, Toni J. [Universidade Federal de Santa Catarina (UFSC), Florianopolis, SC (Brazil). Dept. de Engenharia Quimica e de Alimentos; Baptista, Renan M. [PETROBRAS, Rio de Janeiro, RJ (Brazil). Centro de Pesquisas (CENPES)

    2004-07-01

    Several operations and procedures in the oil industry are related to immiscible displacement of a fluid by another one. Some examples can be listed: the natural and artificial oil elevation from wells, the pumping of high viscosity oils through pipelines using water injection and secondary oil recovery. The performance of the last one is a direct consequence of the interfacial phenomena inherent to oil/water systems. As occur in oil leakages from submarine pipelines, the phase inversion phenomenon can also be considered in this context. Therefore, it is of major importance to realize experimental analysis of the oil/water interface stability and the facts that leads to the fingering phenomenon appearance. This phenomenon is represented into the other one like one or more fingers. The mathematical model used to describe the immiscible displacement of another one is initially developed to Hele-Shaw cells. Experimental observations with a Hele-Shaw cell enable the evaluation of the proposed model and its capability to adequately describe the viscous fingering phenomenon related to physical (density, viscosity and interfacial tension) and geometric properties of the system. (author)

  9. Data mining of text as a tool in authorship attribution

    Science.gov (United States)

    Visa, Ari J. E.; Toivonen, Jarmo; Autio, Sami; Maekinen, Jarno; Back, Barbro; Vanharanta, Hannu

    2001-03-01

    It is common that text documents are characterized and classified by keywords that the authors use to give them. Visa et al. have developed a new methodology based on prototype matching. The prototype is an interesting document or a part of an extracted, interesting text. This prototype is matched with the document database of the monitored document flow. The new methodology is capable of extracting the meaning of the document in a certain degree. Our claim is that the new methodology is also capable of authenticating the authorship. To verify this claim two tests were designed. The test hypothesis was that the words and the word order in the sentences could authenticate the author. In the first test three authors were selected. The selected authors were William Shakespeare, Edgar Allan Poe, and George Bernard Shaw. Three texts from each author were examined. Every text was one by one used as a prototype. The two nearest matches with the prototype were noted. The second test uses the Reuters-21578 financial news database. A group of 25 short financial news reports from five different authors are examined. Our new methodology and the interesting results from the two tests are reported in this paper. In the first test, for Shakespeare and for Poe all cases were successful. For Shaw one text was confused with Poe. In the second test the Reuters-21578 financial news were identified by the author relatively well. The resolution is that our text mining methodology seems to be capable of authorship attribution.

  10. Saffman-Taylor fingers with kinetic undercooling

    KAUST Repository

    Gardiner, Bennett P. J.

    2015-02-23

    © 2015 American Physical Society. The mathematical model of a steadily propagating Saffman-Taylor finger in a Hele-Shaw channel has applications to two-dimensional interacting streamer discharges which are aligned in a periodic array. In the streamer context, the relevant regularization on the interface is not provided by surface tension but instead has been postulated to involve a mechanism equivalent to kinetic undercooling, which acts to penalize high velocities and prevent blow-up of the unregularized solution. Previous asymptotic results for the Hele-Shaw finger problem with kinetic undercooling suggest that for a given value of the kinetic undercooling parameter, there is a discrete set of possible finger shapes, each analytic at the nose and occupying a different fraction of the channel width. In the limit in which the kinetic undercooling parameter vanishes, the fraction for each family approaches 1/2, suggesting that this "selection" of 1/2 by kinetic undercooling is qualitatively similar to the well-known analog with surface tension. We treat the numerical problem of computing these Saffman-Taylor fingers with kinetic undercooling, which turns out to be more subtle than the analog with surface tension, since kinetic undercooling permits finger shapes which are corner-free but not analytic. We provide numerical evidence for the selection mechanism by setting up a problem with both kinetic undercooling and surface tension and numerically taking the limit that the surface tension vanishes.

  11. Suppression of viscous fingering instability by a chemical reaction producing gel

    Science.gov (United States)

    Nagatsu, Yuichiro; Kanbara, Toshizo; Taniguchi, Masafumi

    2016-11-01

    Viscous fingering (VF) is a well-known hydrodynamic instability which is observed when a more viscous fluid is displaced by another less viscous one in porous media or Hele-Shaw cell. In such a situation, the interface between two fluids formed finger-like patterns. Recently, several techniques for suppress VF instability has been developed, which include time-dependent injection, addition of permeability gradient, and use of viscoelastic plates of Hele-Shaw cell. Here, we demonstrate our trial to suppress VF by chemical reaction producing gel. We have succeeded to find a system of solutions and reaction in which the reaction producing a gel is able to completely suppress VF. In addition, we have performed rheological measurement of the gel produced at the reactive interface. The VF experiment and the rheological measurement have been performed by varying concentrations of the reactants. We show the storage modulus (G') of the gel, which corresponds to elastic response to small amplitude oscillatory shear, is responsible for the ability of suppression of VF in the present reactive system.

  12. Fabrication of Multscale Fractal-Like Structures by Controlling Fluid Interface Instability

    Science.gov (United States)

    Islam, Tanveer Ul; Gandhi, Prasanna S.

    2016-11-01

    Nature, in quest for the best designs has shaped its vital systems into fractal geometries. Effectual way of spontaneous fabrication of scalable, ordered fractal-like structures by controlling Saffman-Taylor instability in a lifted Hele-Shaw cell is deployed here. In lifted Hele-Shaw cell uncontrolled penetration of low-viscosity fluid into its high-viscosity counterpart is known to develop irregular, non-repeatable, normally short-lived, branched patterns. We propose and characterize experimentally anisotropies in a form of spatially distributed pits on the cell plates to control initiation and further penetration of non-splitting fingers. The proposed control over shielding mechanism yields recipes for fabrication of families of ordered fractal-like patterns of multiple generations. As an example, we demonstrate and characterize fabrication of a Cayley tree fractal-like pattern. The patterns, in addition, are retained permanently by employing UV/thermally curable fluids. The proposed technique thus establishes solid foundation for bio-mimicking natural structures spanning multiple-scales for scientific and engineering use.

  13. Effects of Permafrost Degradation on Soil Hydrological Processes in Alpine Steppe on the Qinghai-Tibet Plateau

    Institute of Scientific and Technical Information of China (English)

    Yin Zhifang; Ouyang Hua; Yang Zhaoping

    2012-01-01

    Permafrost degradation is prevalent on the Qinghai-Ti-bet Plateau. This may lead to changes in water and heat transition in soils and thus affect the structure and function of ecosystems. In this paper, using the measured data of alpine steppe in Wud- aoliang assessed the model performance in simulating soil freezing and thawing processes. Comparison of the simulated results by simultaneous heat and water (SHAW) model to the measured data showed that SHAW model performed satisfactorily. Based on analyzing the simulated and predicted results, two points were obtained: (1) freezing and thawing of the active layer proceeded both from the soil surface downward. Compared with the freezing process, the thawing process was slower. The freezing period persisted in the surface layer (4 cm depth) for about 5 months; (2) in the next 50 years, frozen period would be shorten about 20 days in the top 100 cm depth while the thawing would start earlier 40 days than present. Soil water storage in the 0-60 cm would de- crease by 22% averagely, especially from June to August when the vegetation is at the dominating water consumed stage. Therefore, this kind of permafrost degradation as active layer freezing and thawing processes changes will reduce soil water content and thus influence those ecosystems above it.

  14. Simultaneous fingering, double-diffusive convection, and thermal plumes derived from autocatalytic exothermic reaction fronts

    Science.gov (United States)

    Eskew, Matthew W.; Harrison, Jason; Simoyi, Reuben H.

    2016-11-01

    Oxidation reactions of thiourea by chlorite in a Hele-Shaw cell are excitable, autocatalytic, exothermic, and generate a lateral instability upon being triggered by the autocatalyst. Reagent concentrations used to develop convective instabilities delivered a temperature jump at the wave front of 2.1 K. The reaction zone was 2 mm and due to normal cooling after the wave front, this generated a spike rather than the standard well-studied front propagation. The reaction front has solutal and thermal contributions to density changes that act in opposite directions due to the existence of a positive isothermal density change in the reaction. The competition between these effects generates thermal plumes. The fascinating feature of this system is the coexistence of plumes and fingering in the same solution which alternate in frequency as the front propagates, generating hot and cold spots within the Hele-Shaw cell, and subsequently spatiotemporal inhomogeneities. The small ΔT at the wave front generated thermocapillary convection which competed effectively with thermogravitational forces at low Eötvös Numbers. A simplified reaction-diffusion-convection model was derived for the system. Plume formation is heavily dependent on boundary effects from the cell dimensions. This work was supported by Grant No. CHE-1056366 from the NSF and a Research Professor Grant from the University of KwaZulu-Natal.

  15. Una versión de la distribución Rayleigh generalizada transmutada

    Directory of Open Access Journals (Sweden)

    Yuri A. Iriarte

    2015-06-01

    Full Text Available La calidad de los procedimientos utilizados en un análisis estadístico depende en gran medida del modelo o las distribuciones de probabilidad que se emplean. Debido a esto, diversos autores han realizado un esfuerzo considerable en generalizar o extender distribuciones de probabilidad presentes en la literatura estadística. En este contexto, Vodă en [13] introduce la distribución de probabilidad Rayleigh generalizada; esta distribución es bastante utilizada en el análisis estadístico de confiabilidad. En este artículo extendemos la distribución Rayleigh generalizada usando el mapa de transmutación de rango cuadrático estudiado por Shaw y Buckley en [12]. Estudiamos las principales propiedades del nuevo modelo, realizamos inferencia estadística y mostramos una aplicación con datos reales. Finalmente, se presentan las principales conclusiones del artículo. Abstract. Statistical analysis procedures’s quality depends on the proper use of the probability distributions. For that reason, many probability distributions have been generalized. For example, Vodă in [13] introduced the generalized Rayleigh distribution, a model widely used in reliability analysis. In this article, we introduce an extension of the generalized Rayleigh distribution using the quadratic rank transmutation map studied by Shaw and Buckley in [12]. We study t

  16. Porous gravity currents: A survey to determine the joint influence of fluid rheology and variations of medium properties

    Science.gov (United States)

    Ciriello, Valentina; Longo, Sandro; Chiapponi, Luca; Di Federico, Vittorio

    2016-06-01

    We develop a model to grasp the combined effect of rheology and spatial stratifications on two-dimensional non-Newtonian gravity-driven flow in porous media. We consider a power-law constitutive equation for the fluid, and a monomial variation of permeability and porosity along the vertical direction (transverse to the flow) or horizontal direction (parallel to the flow). Under these assumptions, similarity solutions are derived in semi-analytical form for thin gravity currents injected into a two-dimensional porous medium and having constant or time-varying volume. The extent and shape of the porous domain affected by the injection is significantly influenced by the interplay of model parameters. These describe the fluid (flow behaviour index n), the spatial heterogeneity (coefficients β, γ, δ, ω for variations of permeability and porosity in the horizontal or vertical direction), and the type of release (volume exponent α). Theoretical results are validated against two sets of experiments with α = 1 (constant inflow) conducted with a stratified porous medium (simulated by superimposing layers of glass beads of different diameter) and a Hele-Shaw analogue for power-law fluid flow, respectively. In the latter case, a recently established Hele-Shaw analogy is extended to the variation of properties parallel to the flow direction. Comparison with experimental results shows that the proposed model is able to capture the propagation of the current front and the current profile.

  17. 21 cm Fluctuations of the Cosmic Dawn with the Owens Valley Long Wavelength Array

    Science.gov (United States)

    Eastwood, Michael; Hallinan, Gregg; Owens Valley LWA Collaboration

    2016-01-01

    The Owens Valley Long Wavelength Array (OVRO LWA) is a 288-antenna interferometer covering 30 to 80 MHz located at the Owens Valley Radio Observatory (OVRO) near Big Pine, California. I am leading the effort to detect spatial fluctuations of the 21 cm transition from the cosmic dawn (z~20) with the OVRO LWA. These spatial fluctuations are primarily sourced by inhomogeneous X-ray heating from early star formation. The spectral hardness of early X-ray sources, stellar feedback mechanisms, and baryon streaming therefore all play a role in shaping the power spectrum. I will present the application of m-mode analysis (Shaw et al. 2014, Shaw et al. 2015) to OVRO LWA data to: 1. compress the data set, 2. create maps of the northern sky that can be fed back into the calibration pipeline, and 3. filter foreground emission. Finally I will present the current status and future prospects of the OVRO LWA for detecting the 21 cm power spectrum at z~20.

  18. On Shaw’s Major Barbara

    Institute of Scientific and Technical Information of China (English)

    张蕊茁

    2013-01-01

    George Bernard Shaw was a progressive mankind. He advocated the forces in revolution and democracy in their strug-gle against imperialism and reaction. Major Barbara is an excellent play which sharply satirized the capitalist society and powerful-ly revealed the outstanding characteristics of capitalism and capitalists. It intensively shows Shaw ’s art of comedy. The story main-ly tells that Undershaft, a millionaire weapon dealer, loves money and despises poverty. Even he thinks poverty is a crime. His vig-orous daughter Barbara, however, is a devout major in the Salvation Army. She treats her father as just another soul to be saved. But when the Salvation Army needs funds to keep running , it is Undershaft who saves the day. At this time, she finally compro-mises, and believes that it was whisky king and the armament dealer that saved the poor. The main theme of Major Barbara is cen-tered on conflicting social and moral ethics, one realistic and the other idealistic. The chief merit of the play lies in the fact that what Undershaft does and says reveals the true nature of monopoly capitalism.

  19. An Evaluation of Unsaturated Flow Models in an Arid Climate

    Energy Technology Data Exchange (ETDEWEB)

    Dixon, J. [Univ. of Nevada, Las Vegas, NV (United States)

    1999-12-01

    The objective of this study was to evaluate the effectiveness of two unsaturated flow models in arid regions. The area selected for the study was the Area 5 Radioactive Waste Management Site (RWMS) at the Nevada Test Site in Nye County, Nevada. The two models selected for this evaluation were HYDRUS-1D [Simunek et al., 1998] and the SHAW model [Flerchinger and Saxton, 1989]. Approximately 5 years of soil-water and atmospheric data collected from an instrumented weighing lysimeter site near the RWMS were used for building the models with actual initial and boundary conditions representative of the site. Physical processes affecting the site and model performance were explored. Model performance was based on a detailed sensitivity analysis and ultimately on storage comparisons. During the process of developing descriptive model input, procedures for converting hydraulic parameters for each model were explored. In addition, the compilation of atmospheric data collected at the site became a useful tool for developing predictive functions for future studies. The final model results were used to evaluate the capacities of the HYDRUS and SHAW models for predicting soil-moisture movement and variable surface phenomena for bare soil conditions in the arid vadose zone. The development of calibrated models along with the atmospheric and soil data collected at the site provide useful information for predicting future site performance at the RWMS.

  20. Strategic stories: how 3M is rewriting business planning.

    Science.gov (United States)

    Shaw, G; Brown, R; Bromiley, P

    1998-01-01

    Virtually all business plans are written as a list of bullet points. Despite the skill or knowledge of their authors, these plans usually aren't anything more than lists of "good things to do." For example: Increase sales by 10%. Reduce distribution costs by 5%. Develop a synergistic vision for traditional products. Rarely do these lists reflect deep thought or inspire commitment. Worse, they don't specify critical relationships between the points, and they can't demonstrate how the goals will be achieved. 3M executive Gordon Shaw began looking for a more coherent and compelling way to present business plans. He found it in the form of strategic stories. Telling stories was already a habit of mind at 3M. Stories about the advent of Post-it Notes and the invention of masking tape help define 3M's identity. They're part of the way people at 3M explain themselves to their customers and to one another. Shaw and his coauthors examine how business plans can be transformed into strategic narratives. By painting a picture of the market, the competition, and the strategy needed to beat the competition, these narratives can fill in the spaces around the bullet points for those who will approve and those who will implement the strategy. When people can locate themselves in the story, their sense of commitment and involvement is enhanced. By conveying a powerful impression of the process of winning, narrative plans can mobilize an entire organization.

  1. A Research into Female Image from Major Barbara%论《芭芭拉少校》中的女性形象

    Institute of Scientific and Technical Information of China (English)

    杨雪

    2011-01-01

    Female image in Major Barbara clearly illustrates George Bernard Shaw's feminism ideas.Shaw endows the heroine,Barbara,with strong independence,distinctive bravery and unwomanly quality.She struggles to free herself from the control of male-dominated society and ventures into social activities.By creating this unpleasant female image,Shaw tries to arouse women's independent awareness and push them into social development.%《芭芭拉少校》这部作品中,萧伯纳塑造了一个富有独立人格、坚韧勇敢、脱离女性特征的女性。她摆脱男权社会的控制,参与社会活动,推动社会文明的发展。萧伯纳通过这个特立独行的女性唤起女性自强的意识,促进女性参与社会发展的积极性,展示了他与众不同的女性主义观点。

  2. Significance of Lockeia and associated trace fossils from the Bada Bagh Member, Jaisalmer Formation, Rajasthan

    Indian Academy of Sciences (India)

    Amruta R Paranjape; Kantimati G Kulkarni; Shweta S Gurav

    2013-10-01

    A Lockeia-Protovirgularia ichnofauna representing the Cruziana ichnofacies is reported from a calcareous sandstone horizon of the Callovian Bada Bagh Member, Jaisalmer Formation, Rajasthan. The ichnoassemblage is characterized by Lockeia cunctator, L. siliquaria, Protovirgularia ?bidirectionalis, P. rugosa, Ptychoplasma vagans along with Palaeophycus tubularis, P. striatus, Heliophycus isp. And Lophoctenium isp. Use of numerical analysis yielding length to width ratio, slopes and coefficient of determination helps in confirming identification of ichnospecies of Lockeia. Fine morphological details of Lockeia and Protovirgularia, especially sharp and closely spaced chevrons of Protovirgularia, indicate that the substrate in which they were emplaced was stiff, resistant, dewatered and better consolidated. Therefore, it construes that this ichnoassemblage belonging to the classical Cruziana ichnofacies occurs in stiff softground and not a typical softground. Though the ichnofacies of this calcareous sandstone bed indicates low-medium energy condition under subtidal environment of deposition, underlying strata containing Arenicolites, Skolithos and Curvolithus of Skolithos ichnofacies indicate intertidal sandy shore environment with high energy conditions. Thus, it is concluded that this area was undergoing continuous, gradual deepening. However, the percentage of Thalassinoides, Ophiomorpha and Phycodes in the overlying bed is quite high suggesting an increase in the energy conditions resulting from a probable shallowing.

  3. In vivo induction of antioxidant response and oxidative stress associated with genotoxicity and histopathological alteration in two commercial fish species due to heavy metals exposure in northern India (Kali) river.

    Science.gov (United States)

    Fatima, Mahino; Usmani, Nazura; Firdaus, Fakiha; Zafeer, Mohammad Faraz; Ahmad, Shafeeque; Akhtar, Kafil; Dawar Husain, S M; Ahmad, Mir Hilal; Anis, Ehraz; Mobarak Hossain, M

    2015-01-01

    Heavy metals can significantly bioaccumulate in fish tissues. The step wise mechanism of heavy metal toxicities on fish health is still limited. The present study assessed the tissue-specific antioxidant response and oxidative stress biomarkers of commercially important fish species namely, Channa striatus and Heteropneustes fossilis inhabiting Kali River of northern India where heavy-metal load is beyond the World Health Organisation - maximum permissible limits. Heavy metals chromium (Cr), nickel (Ni), lead (Pb) and cadmium (Cd) were elevated in both fish species compared to recommended values of the Federal Environmental Protection Agency (FEPA), 1999 for edible fishes. Reduced glutathione (GSH), superoxide dismutase (SOD) and catalase (CATA) activities in all tissues (brachial, neural, renal and hepatic) were altered. Cellular lipid and protein compromisation in both fishes induced by heavy metals was determined by lipid peroxidation (LPO) and protein carbonylation (PC) assays. Micronucleus (MN) test of erythrocytes and comet assay of liver cells confirmed genotoxicity. Histopathology of the liver, kidney and brain of affected fishes was distorted significantly with its reference fishes thereby affecting the quality and quantity of these fish stocks. This raises a serious concern as these fishes are consumed by the local population which would ultimately affect human health.

  4. Metal contamination in select species of birds in Nilgiris district, Tamil Nadu, India.

    Science.gov (United States)

    Jayakumar, R; Muralidharan, S

    2011-08-01

    Variation in metal contamination in six species of birds, namely the Cormorant (Phalacrocorax carbo), Cattle Egret (Bubulcus ibis), Little Egret (Egretta garzetta), Pond Heron (Ardeola grayii), Common Myna (Acridotheres tristis) and Jungle Babbler (Turdoides striatus) in Nilgiris district, Tamil Nadu, India. The accumulation of heavy metals differed among the species studied. On an average, Little Egret accumulated high concentrations of copper (53.31 ± 23.19 ppm) followed by Cattle Egret (16.27 ± 9.83 ppm) in liver. Of all the species, Jungle Babbler recorded the maximum concentrations (20.59 ± 9.07 ppm) in muscle. The Pond Heron recorded the maximum concentration (35.38 ± 11.14 ppm) in brain. On an average the maximum level was in the kidney of Common Myna (7.76 ± 1.80 ppm).

  5. X-ray structures of AMPA receptor-cone snail toxin complexes illuminate activation mechanism.

    Science.gov (United States)

    Chen, Lei; Dürr, Katharina L; Gouaux, Eric

    2014-08-29

    AMPA-sensitive glutamate receptors are crucial to the structural and dynamic properties of the brain, to the development and function of the central nervous system, and to the treatment of neurological conditions from depression to cognitive impairment. However, the molecular principles underlying AMPA receptor activation have remained elusive. We determined multiple x-ray crystal structures of the GluA2 AMPA receptor in complex with a Conus striatus cone snail toxin, a positive allosteric modulator, and orthosteric agonists, at 3.8 to 4.1 angstrom resolution. We show how the toxin acts like a straightjacket on the ligand-binding domain (LBD) "gating ring," restraining the domains via both intra- and interdimer cross-links such that agonist-induced closure of the LBD "clamshells" is transduced into an irislike expansion of the gating ring. By structural analysis of activation-enhancing mutants, we show how the expansion of the LBD gating ring results in pulling forces on the M3 helices that, in turn, are coupled to ion channel gating.

  6. Climate, deer, rodents, and acorns as determinants of variation in lyme-disease risk.

    Directory of Open Access Journals (Sweden)

    Richard S Ostfeld

    2006-06-01

    Full Text Available Risk of human exposure to vector-borne zoonotic pathogens is a function of the abundance and infection prevalence of vectors. We assessed the determinants of Lyme-disease risk (density and Borrelia burgdorferi-infection prevalence of nymphal Ixodes scapularis ticks over 13 y on several field plots within eastern deciduous forests in the epicenter of US Lyme disease (Dutchess County, New York. We used a model comparison approach to simultaneously test the importance of ambient growing-season temperature, precipitation, two indices of deer (Odocoileus virginianus abundance, and densities of white-footed mice (Peromyscus leucopus, eastern chipmunks (Tamias striatus, and acorns (Quercus spp., in both simple and multiple regression models, in predicting entomological risk. Indices of deer abundance had no predictive power, and precipitation in the current year and temperature in the prior year had only weak effects on entomological risk. The strongest predictors of a current year's risk were the prior year's abundance of mice and chipmunks and abundance of acorns 2 y previously. In no case did inclusion of deer or climate variables improve the predictive power of models based on rodents, acorns, or both. We conclude that interannual variation in entomological risk of exposure to Lyme disease is correlated positively with prior abundance of key hosts for the immature stages of the tick vector and with critical food resources for those hosts.

  7. Palynology and clay mineralogy of the Deccan volcanic associated sediments of Saurashtra, Gujarat: Age and paleoenvironments

    Indian Academy of Sciences (India)

    Bandana Samant; D M Mohabey; P Srivastava; Deepali Thakre

    2014-02-01

    The intertrappean sediments associated with Deccan Continental Flood Basalt (DCFB) sequence at Ninama in Saurashtra, Gujarat yielded palynoassemblage comprising at least 12 genera and 14 species including Paleocene taxa such as Intrareticulites brevis, Neocouperipollis spp., Striacolporites striatus, Retitricolpites crassimarginatus and Rhombipollis sp. The lava flows of Saurashtra represent the northwestern most DCFB sequence in India. It is considered that the Saurashtra lava flows represent the earliest volcanic activity in the Late Cretaceous of the Reunion Mantle Plume on the northward migrating Indian Plate. The present finding of the Paleocene palynoflora from Ninama sediments indicate Paleocene age for the associated lava flows occurring above the intertrappean bed which suggests that the Saurashtra plateau witnessed eruption of Deccan lava flows even during Paleocene. The clay mineral investigation of the Ninama sediments which are carbonate dominated shows dominance of low charge smectite (LCS) along with the presence of mica and vermiculite. Based on the clay mineral assemblage it is interpreted that arid climatic conditions prevailed during the sedimentation. The smectite dominance recorded within these sediments is in agreement with global record of smectite peak close to the Maastrichtian-Paleocene transition and climatic aridity.

  8. An Experimental Test of Competition among Mice, Chipmunks, and Squirrels in Deciduous Forest Fragments.

    Directory of Open Access Journals (Sweden)

    Jesse L Brunner

    Full Text Available Mixed hardwood forests of the northeast United States support a guild of granivorous/omnivorous rodents including gray squirrels (Sciurus carolinensis, eastern chipmunks (Tamias striatus, and white-footed mice (Peromyscus leucopus. These species coincide geographically, co-occur locally, and consume similar food resources. Despite their idiosyncratic responses to landscape and patch variables, patch occupancy models suggest that competition may influence their respective distributions and abundances, and accordingly their influence on the rest of the forest community. Experimental studies, however, are wanting. We present the result of a large-scale experiment in which we removed white-footed mice or gray squirrels from small, isolated forest fragments in Dutchess County, New York, and added these mammals to other fragments in order to alter the abundance of these two species. We then used mark-recapture analyses to quantify the population-level and individual-level effects on resident mice, squirrels, and chipmunks. Overall, we found little evidence of competition. There were essentially no within-season numerical responses to changes in the abundance of putative competitors. Moreover, while individual-level responses (apparent survival and capture probability did vary with competitor densities in some models, these effects were often better explained by site-specific parameters and were restricted to few of the 19 sites we studied. With only weak or nonexistent competition among these three common rodent species, we expect their patterns of habitat occupancy and population dynamics to be largely independent of one another.

  9. Helminth parasites of the leopard frog Lithobates sp. Colima (Amphibia: Ranidae) from Colima, Mexico.

    Science.gov (United States)

    Cabrera-Guzmán, Elisa; Garrido-Olvera, Lorena; León-Règagnon, Virginia

    2010-08-01

    The helminth fauna inhabiting Lithobates sp. Colima from Ticuizitán, Colima, Mexico, comprises 10 species: 4 digeneans ( Clinostomum sp., Glypthelmins quieta , Haematoloechus sp., and Langeronia macrocirra ), 5 nematodes ( Aplectana itzocanensis , Cosmocerca podicipinus , Foleyellides striatus , Oswaldocruzia subauricularis , and Rhabdias sp.), and 1 cestode (Cyclophyllidea). Glypthelmins quieta , L. macrocirra , and A. itzocanensis represent new host records. These observations, added to previous records from Acapulco, Guerrero, Mexico, indicate that the helminth fauna of Lithobates sp. from Colima comprises 25 taxa. Frogs are being parasitized by 3 infection routes: ingestion of intermediate host, skin penetration by larval forms, and transmission by vectors. Species of Aplectana , Cosmocerca , Foleyellides , and Oswaldocruzia occurred in high prevalence in Colima, similar to a previous study on the same frog species from Guerrero. In Colima, Glypthelmins , Haematoloechus , and Rhabdias also occurred in high prevalence. Haematoloechus species reached the highest mean intensity in both localities. The semiaquatic habits of this species of frog and the availability of particular feeding resources appear to determine the helminth composition and infection levels; however, co-speciation events also play an important role structuring these helminth communities.

  10. West Nile virus associations in wild mammals: a synthesis.

    Science.gov (United States)

    Jeffrey Root, J

    2013-04-01

    Exposures to West Nile virus (WNV) have been documented in a variety of wild mammals in both the New and Old Worlds. This review tabulates at least 100 mammal species with evidence of WNV exposure. Many of these exposures were detected in free-ranging mammals, while several were noted in captive individuals. In addition to exposures, this review discusses experimental infections in terms of the potential for reservoir competence of select wild mammal species. Overall, few experimental infections have been conducted on wild mammals. As such, the role of most wild mammals as potential amplifying hosts for WNV is, to date, uncertain. In most instances, experimental infections of wild mammals with WNV have resulted in no or low-level viremia. Some recent studies have indicated that certain species of tree squirrels (Sciurus spp.), eastern chipmunks (Tamias striatus), and eastern cottontail rabbits (Sylvilagus floridanus) develop viremia sufficient for infecting some mosquito species. Certain mammalian species, such as tree squirrels, mesopredators, and deer have been suggested as useful species for WNV surveillance. In this review article, the information pertaining to wild mammal associations with WNV is synthesized.

  11. Osteology of some catfishes of the genus Glyptothorax (Teleostei: Siluriformes of northeastern India

    Directory of Open Access Journals (Sweden)

    W. Vishwanath

    2010-10-01

    Full Text Available The morphology of the premaxilla, dentary, Weberian lamina, infraorbital series, vomer and frontal bones were observed in eight species of Glyptothorax of northeastern India. In G. botius, G. granulus, G. manipurensis, G. ngapang, G. striatus and G. ventrolineatus, the premaxilla consists only of proximal and distal tooth plates, the anterior portion of the dentary is slender and its dorsal surface bears villiform teeth, the lateral extension of posterior portion of Weberian lamina terminates at the level of the lateral margin of its anterior portion, and the frontal has a shallow orbital notch. In G. cavia and G. chindwinica, the premaxilla consists of proximal, distal and posterior elements on the roof of the oral cavity; the anterior portion of the dentary bears posterior extension of dentary tooth-plate; the lateral extension of the posterior portion of Weberian lamina extends almost to the distal tip of the fifth parapophysis; there are nine or ten infraorbital bones with a longer and broader body of the lacrimal; greatly enlarged vomerine head; and frontal bears a deep orbital notch. The jaw structure of G. burmanicus is discussed.

  12. Bilateral zosteriform extragenital lichen sclerosus.

    Science.gov (United States)

    Kumar, Piyush; Jha, Abhijeet Kumar; Mallik, Sambeet Kumar; Raihan, Mohammed

    2014-01-01

    A 35-year-old man presented with asymptomatic eruption on both forearms and lower aspects of the legs for 6 months. The lesions first appeared on his inner aspects of the wrist, the dorsal surface of the hands, and legs and progressed to involve proximal aspects of the extremities. There was no significant past history. On examination, multiple pearly white papules and depigmented atrophic plaques were found bilaterally on the flexors of the arms and the extensors of the legs. The lesions were arranged in a linear manner, following the lines of Blaschko (Figures 1 and 2). The surface of the atrophic plaques was notable for prominent telangiectasia, giving an erythematous appearance. The genitalia, oral cavity, palms, and soles were spared. Systemic examination was noncontributory. Lichen striatus and extragenital lichen sclerosus (ELS) were considered the differential diagnosis. Clinically, the age of the patient, the absence of scaling, and the presence of atrophic plaques and telangiectasia were in favor of ELS. A punch biopsy from an atrophic plaque was performed, and it revealed hyperkeratosis, atrophic epidermis, basal layer vacuolar degeneration, mild lymphocytic infiltration in the dermis, edema, and homogenization of collagen of the upper portion of the dermis (Figures 3 and Figure 4). Histopathologic findings were consistent with lichen sclerosus. A diagnosis of bilateral zosteriform ELS was made.

  13. Prevalence and diversity of small mammal-associated Bartonella species in rural and urban Kenya.

    Science.gov (United States)

    Halliday, Jo E B; Knobel, Darryn L; Agwanda, Bernard; Bai, Ying; Breiman, Robert F; Cleaveland, Sarah; Njenga, M Kariuki; Kosoy, Michael

    2015-03-01

    Several rodent-associated Bartonella species are human pathogens but little is known about their epidemiology. We trapped rodents and shrews around human habitations at two sites in Kenya (rural Asembo and urban Kibera) to determine the prevalence of Bartonella infection. Bartonella were detected by culture in five of seven host species. In Kibera, 60% of Rattus rattus were positive, as compared to 13% in Asembo. Bartonella were also detected in C. olivieri (7%), Lemniscomys striatus (50%), Mastomys natalensis (43%) and R. norvegicus (50%). Partial sequencing of the citrate synthase (gltA) gene of isolates showed that Kibera strains were similar to reference isolates from Rattus trapped in Asia, America, and Europe, but that most strains from Asembo were less similar. Host species and trapping location were associated with differences in infection status but there was no evidence of associations between host age or sex and infection status. Acute febrile illness occurs at high incidence in both Asembo and Kibera but the etiology of many of these illnesses is unknown. Bartonella similar to known human pathogens were detected in small mammals at both sites and investigation of the ecological determinants of host infection status and of the public health significance of Bartonella infections at these locations is warranted.

  14. Prevalence and diversity of small mammal-associated Bartonella species in rural and urban Kenya.

    Directory of Open Access Journals (Sweden)

    Jo E B Halliday

    2015-03-01

    Full Text Available Several rodent-associated Bartonella species are human pathogens but little is known about their epidemiology. We trapped rodents and shrews around human habitations at two sites in Kenya (rural Asembo and urban Kibera to determine the prevalence of Bartonella infection. Bartonella were detected by culture in five of seven host species. In Kibera, 60% of Rattus rattus were positive, as compared to 13% in Asembo. Bartonella were also detected in C. olivieri (7%, Lemniscomys striatus (50%, Mastomys natalensis (43% and R. norvegicus (50%. Partial sequencing of the citrate synthase (gltA gene of isolates showed that Kibera strains were similar to reference isolates from Rattus trapped in Asia, America, and Europe, but that most strains from Asembo were less similar. Host species and trapping location were associated with differences in infection status but there was no evidence of associations between host age or sex and infection status. Acute febrile illness occurs at high incidence in both Asembo and Kibera but the etiology of many of these illnesses is unknown. Bartonella similar to known human pathogens were detected in small mammals at both sites and investigation of the ecological determinants of host infection status and of the public health significance of Bartonella infections at these locations is warranted.

  15. Temporal Change in Fur Color in Museum Specimens of Mammals: Reddish-Brown Species Get Redder with Storage Time

    Directory of Open Access Journals (Sweden)

    Andrew K. Davis

    2013-01-01

    Full Text Available Museum collections have great value for zoological research, but despite careful preservation, over time specimens can show subtle changes in color. We examined the effect of storage time on fur color of two reddish-brown species, golden mice (Ochrotomys nuttalli and eastern chipmunk (Tamias striatus. Using image analysis, we obtained color data (hue, saturation, and density on 91 golden mice and 49 chipmunks from Georgia, USA. Analyses that considered body size, gender, and collection year showed significant effects of year on fur color of golden mice (hue and saturation and of agouti color of chipmunks. Older specimens tended to be redder in color than newer specimens, consistent with a prior study of red bats (Lasiurus borealis. Hair samples showed reddening of fine body hairs, but not in thicker guard hairs. There was no temporal change in black or white stripe color in chipmunks, indicating that this temporal effect would be limited to species with reddish-brown fur. This effect may be caused by breakdown of eumelanin pigments (which make dark colors over time, leaving a greater proportion of pheomelanin pigments (which make red colors. These results show that storage time needs to be considered in research projects where fur color is of importance.

  16. Toward Objective, Morphology-Based Taxonomy: A Case Study on the Malagasy Nesomyrmex sikorai Species Group (Hymenoptera: Formicidae).

    Science.gov (United States)

    Csősz, Sándor; Fisher, Brian L

    2016-01-01

    Madagascar is one of the world's greatest biodiversity hotspots, meriting special attention from biodiversity scientists. It is an excellent testing ground for novel techniques in taxonomy that aim to increase classification objectivity and yield greater taxonomic resolving power. Here we reveal the diversity of a unique and largely unexplored fragment of the Malagasy ant fauna using an advanced combination of exploratory analyses on quantitative morphological data allowing for increased objectivity in taxonomic workflow. The diversity of the Nesomyrmex sikorai species-group was assessed via hypothesis-free nest-centroid-clustering combined with recursive partitioning to estimate the number of morphological clusters and determine the most probable boundaries between them. This combination of methods provides a highly automated and objective species delineation protocol based on continuous morphometric data. Delimitations of clusters recognized by these exploratory analyses were tested via confirmatory Linear Discriminant Analysis (LDA) and Multivariate Ratio Analysis (MRA). The final species hypotheses are corroborated by many qualitative characters, and the recognized species exhibit different spatial distributions and occupy different ecological regions. We describe and redescribe eight morphologically distinct species including six new species: Nesomyrmex excelsior sp. n., N. modestus sp. n., N. reticulatus sp. n., N. retusispinosus (Forel, 1892), N. rugosus sp. n., N. sikorai (Emery, 1896), N. striatus sp. n., and N. tamatavensis sp. n. An identification key for their worker castes using morphometric data is provided.

  17. Revision of Campsurus violaceus species group (Ephemeroptera: Polymitarcyidae) with new synonymies and nomina dubia in Campsurus Eaton, 1868.

    Science.gov (United States)

    Molineri, C; Salles, F F; Emmerich, D

    2015-02-19

    The violaceus species group (formerly notatus species group) of Campsurus Eaton is revised. All the species in the violaceus group are diagnosed. A new species, C. molinai sp. nov. is described based on male imagos from Bolivia, characterized by their large and sclerotized penes. The violaceus group is proposed to include the following species: C. assimilis Traver, C. truncatus Ulmer (=C. mahunkai Puthz = C. melanocephalus Pereira & da Silva, new synonyms), C. violaceus Needham & Murphy (= C. meyeri Navás = C. notatus Needham & Murphy = C. paranensis Navás, new synonyms), C. emersoni Traver, C. decoloratus (Hagen), and C. molinai sp.nov. Additionally we consider the following species as nomina dubia: C. longicauda Navás, C. pfeifferi Navás, C. zikani Navás, C. albicans (orig. Ephemera albicans Percheron in Guerin & Percheron), C. burmeisteri Ulmer, C. dallasi Navás, C. quadridentatus Eaton, C. claudus Needham & Murphy, C. corumbanus Needham & Murphy, C. dorsalis (Burmeister), C. mutilus Needham & Murphy, and C. striatus Needham & Murphy. Given the results presented herein (five species synonymized and 12 proposed as nomina dubia), only 28 valid species remain in the genus Campsurus. Additionally, the nymphal stages of C. violaceus and C. truncatus are described and illustrated. Female adult genitalia (sockets) and eggs of C. decoloratus are described for the first time. Diagnoses, new country records, and redescriptions of selected characters of the imagos for the species of the violaceus group are given.

  18. Effects of tannins on fruit selection in three southern African frugivorous birds.

    Science.gov (United States)

    Zungu, Manqoba M; Downs, Colleen T

    2015-02-01

    Tannins are common secondary compounds in plant material and are known for their ability to bind to protein which reduces nitrogen availability in the diet. In fruits, these compounds are responsible for their astringency which is thought to result in reduced food intake. In this study, the repellent effects of tannins were examined in three species of frugivorous birds: red-winged starlings Onychognathus morio, speckled mousebirds Colius striatus and Cape white-eyes Zosterops virens. Birds were fed artificial fruit diets containing varying levels of tannins in paired choice tests with the amount of food eaten by birds used to determine preference. Red-winged starlings were attracted to the control diet, indifferent to the medium tannin diet and deterred by the high tannin diet whereas speckled mousebirds and Cape white-eyes were not deterred at all concentrations. The discrepancy in the results was attributed to differences in taste sensitivity, tolerance levels and detoxification mechanisms of secondary compounds between species. Because fruit selection and ultimately fruit removal rates affect plant community composition, the disparity in the results suggests that frugivorous birds do not contribute equally to plant community dynamics. However, plant secondary compounds in fruits are diverse and their effects are similarly diverse and there is potential that different groups of secondary compounds generate disparate effects. Similar studies on other types of secondary compounds may thus contribute towards a broader understanding of the role of secondary compounds in mediating fruit-frugivore interactions.

  19. Seasonal and ontogenetic patterns of habitat use in coral reef fish juveniles

    Science.gov (United States)

    Mellin, C.; Kulbicki, M.; Ponton, D.

    2007-12-01

    We investigated the diversity of patterns of habitat use by juveniles of coral reef fishes according to seasons and at two spatial scales (10-100 m and 1-10 km). We conducted underwater visual censuses in New Caledonia's Lagoon between 1986 and 2001. Co-inertia analyses highlighted the importance of mid-shelf habitats at large spatial scale (1-10 km) and of sandy and vegetated habitats at small spatial scale (10-100 m) for most juveniles. Among all juvenile species, 53% used different habitats across seasons (e.g. Lutjanus fulviflamma and Siganus argenteus) and 39% used different habitats as they grow (e.g. Lethrinus atkinsoni and Scarus ghobban). During their ontogeny, at large and small scales, respectively, 21% and 33% of the species studied showed an increase in the number of habitats used (e.g. L. fulviflamma, L. atkinsoni), 10% and 3% showed a decrease in the number of habitats used (e.g. Amphiprion melanopus, Siganus fuscescens), 23% and 3% showed a drastic change of habitat used (e.g. S. ghobban, Scarus sp.) whereas 46% and 61% showed no change of habitat used (e.g. Lethrinus genivittatus, Ctenochaetus striatus). Changes in habitat use at both small and large spatial scales occurred during the ontogeny of several species (e.g. S. ghobban, Scarus sp.). Results pointed out the different spatial and temporal scales of juvenile habitat use to account for in conservation decisions regarding both assemblage and species-specific levels.

  20. Behaviour of {alpha}-, {beta}-, {gamma}-, and {delta}-hexachlorocyclohexane in the soil-plant system of a contaminated site

    Energy Technology Data Exchange (ETDEWEB)

    Calvelo Pereira, R. [Departamento de Edafoloxia e Quimica Agricola, Facultade de Bioloxia, Universidade de Santiago de Compostela, 15782-Santiago de Compostela (Spain)]. E-mail: edrobert@usc.es; Camps-Arbestain, M. [Departamento de Edafoloxia e Quimica Agricola, Facultade de Bioloxia, Universidade de Santiago de Compostela, 15782-Santiago de Compostela (Spain); Rodriguez Garrido, B. [Departamento de Edafoloxia e Quimica Agricola, Facultade de Bioloxia, Universidade de Santiago de Compostela, 15782-Santiago de Compostela (Spain); Macias, F. [Departamento de Edafoloxia e Quimica Agricola, Facultade de Bioloxia, Universidade de Santiago de Compostela, 15782-Santiago de Compostela (Spain); Monterroso, C. [Departamento de Edafoloxia e Quimica Agricola, Facultade de Bioloxia, Universidade de Santiago de Compostela, 15782-Santiago de Compostela (Spain)

    2006-11-15

    The behaviour of the organochlorine pesticide hexachlorocyclohexane (HCH) is investigated. The concentrations of {alpha}-, {beta}-, {gamma}-, and {delta}-HCH isomers were measured in soils, rhizosphere and vegetation in a contaminated area in Galicia (NW Spain). The total concentration of HCH in soils reached values close to 20 000 mg kg{sup -1}. The plants analysed (Avena sativa L., Chenopodium spp., Solanum nigrum L., Cytisus striatus (Hill) Roth, and Vicia sativa L.) accumulated HCH, especially the {beta}-HCH isomer, in their tissues. The most likely mechanisms of HCH accumulation in plants were sorption of soil HCH on roots and sorption of volatilized HCH on aerial plant tissues. The concentrations of HCH obtained from the bulk and rhizosphere soils of selected plant species suggest that roots tend to reduce levels of the HCH isomers in the rhizosphere. The results reflect the importance of vegetation in the distribution of organochlorine compounds in the soil-plant system. - This paper describes the soil-plant relationship of hexachlorocyclohexane isomers in a contaminated site, with special focus on the rhizosphere effect.

  1. Influence of plant root exudates on the mobility of fuel volatile compounds in contaminated soils.

    Science.gov (United States)

    Balseiro-Romero, María; Kidd, Petra S; Monterroso, Carmela

    2014-01-01

    Vegetation and its associated microorganisms play an important role in the behaviour of soil contaminants. One of the most important elements is root exudation, since it can affect the mobility, and therefore, the bioavailability of soil contaminants. In this study, we evaluated the influence of root exudates on the mobility of fuel derived compounds in contaminated soils. Samples of humic acid, montmorillonite, and an A horizon from an alumi-umbric Cambisol were contaminated with volatile contaminants present in fuel: oxygenates (MTBE and ETBE) and monoaromatic compounds (benzene, toluene, ethylbenzene and xylene). Natural root exudates obtained from Holcus lanatus and Cytisus striatus and ten artificial exudates (components frequently found in natural exudates) were added to the samples, individually and as a mixture, to evaluate their effects on contaminant mobility. Fuel compounds were analyzed by headspace-gas chromatography-mass spectrometry. In general, the addition of natural and artificial exudates increased the mobility of all contaminants in humic acid. In A horizon and montmorillonite, natural or artificial exudates (as a mixture) decreased the contaminant mobility. However, artificial exudates individually had different effects: carboxylic components increased and phenolic components decreased the contaminant mobility. These results established a base for developing and improving phytoremediation processes of fuel-contaminated soils.

  2. Avifauna of “RPPN da UNISC”, Sinimbu municipality, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Samuel Lopes Oliveira

    2010-09-01

    Full Text Available This work presents a list of 169 bird species registered at the “RPPN da UNISC”, Private Natural Heritage in Sinimbu municipality, Rio Grande do Sul state. The survey was carried out between January 2007 and January 2009. Five species were highlighted as being most threatened with extinction in the state: Odontophorus capueira, Patagioenas cayennensis, Amazona pretrei, Triclaria malachitacea and Grallaria varia. One of them, Amazona pretrei, was also threatened on a national and global level, and eight species, were classified as near-threatened globally (Triclaria malachitacea, Strix hylophila, Picumnus nebulosus, Piculus aurulentus, Carpornis cucullata, Leptasthenura setaria, Cyanocorax caeruleus and Euphonia chalybea. The occurrence of four species was previously unknown in the region (Pulsatrix koeniswaldiana, Trogon rufus, Myiopagis viridicata and Turdus leucomelas and the presence of six rare or rarely-registered species for Rio Grande do Sul state (Accipiter striatus, Geranospiza caerulescens, Micrastur semitorquatus, Chamaeza ruficauda, Macropsalis forcipata and Muscipripa vetula was also verified. These records, in conjunction with other surveys conducted in the central escarpment of the Planalto, show high diversity of bird life, albeit unprotected due to the lack of conservation areas, environmental policies and fiscalization.

  3. Lassa serology in natural populations of rodents and horizontal transmission.

    Science.gov (United States)

    Fichet-Calvet, Elisabeth; Becker-Ziaja, Beate; Koivogui, Lamine; Günther, Stephan

    2014-09-01

    Lassa virus causes hemorrhagic fever in West Africa. Previously, we demonstrated by PCR screening that only the multimammate mouse, Mastomys natalensis, hosts Lassa virus in Guinea. In the present study, we used the same specimen collection from 17 villages in Coastal, Upper, and Forest Guinea to investigate the Lassa virus serology in the rodent population. The aim was to determine the dynamics of antibody development in M. natalensis and to detect potential spillover infections in other rodent species. Immunoglobulin G (IgG) antibody screening was performed using the indirect immunofluorescence assay with the Guinean Lassa virus strain Bantou 289 as antigen. The overall seroprevalence was 8% (129/1551) with the following rodents testing positive: 109 M. natalensis, seven Mastomys erythroleucus, four Lemniscomys striatus, four Praomys daltoni, three Mus minutoides, and two Praomys rostratus. Nearly all of them (122/129) originated from Bantou, Tanganya, and Gbetaya, where Lassa virus is highly endemic in M. natalensis. The antibody seroprevalence in M. natalensis from this high-endemic area (27%; 108/396) depended on the village, habitat, host age, and host abundance. A main positive factor was age; the maximum seroprevalence reached 50% in older animals. Our data fit with a model implicating that most M. natalensis rodents become horizontally infected, clear the virus within a period significantly shorter than their life span, and develop antibodies. In addition, the detection of antibodies in other species trapped in the habitats of M. natalensis suggests spillover infections.

  4. Spatio-temporal variation in small mammal species richness, relative abundance and body mass reveal changes in a coastal wetland ecosystem in Ghana.

    Science.gov (United States)

    Ofori, Benjamin Y; Attuquayefio, Daniel K; Owusu, Erasmus H; Musah, Yahaya; Ntiamoa-Baidu, Yaa

    2016-06-01

    Coastal wetlands in Ghana are under severe threat of anthropogenic drivers of habitat degradation and climate change, thereby increasing the need for assessment and monitoring to inform targeted and effective conservation of these ecosystems. Here, we assess small mammal species richness, relative abundance and body mass in three habitats at the Muni-Pomadze Ramsar site of Ghana, and compare these to baseline data gathered in 1997 to evaluate changes in the wetland ecosystem. Small mammals were live-trapped using Sherman collapsible and pitfall traps. We recorded 84 individuals of 10 species in 1485 trap-nights, whereas the baseline study recorded 45 individuals of seven species in 986 trap-nights. The overall trap-success was therefore greater in the present study (5.66 %) than the baseline study (4.56 %). The species richness increased from one to four in the forest, and from zero to eight in the thicket, but decreased from six to four in the grassland. The total number of individuals increased in all habitats, with the dominant species in the grassland shifting from Lemniscomys striatus to Mastomys erythroleucus. Three species, Malacomys edwardsi, Grammomys poensis and Praomys tullbergi are the first records for the Muni-Pomadze Ramsar site. Generally, the average body mass of individual species in the grassland was lower in the present study. The considerable changes in small mammal community structure suggest changes in the wetland ecosystem. The conservation implications of our findings are discussed.

  5. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (south Florida)

    Energy Technology Data Exchange (ETDEWEB)

    Jory, D.E.; Iversen, E.S. (Miami Univ., FL (USA). Rosenstiel School of Marine and Atmospheric Sciences)

    1989-08-01

    Black, red, and Nassau groupers (Mycteroperca bonaci, Epinephelus morio, and E. striatus, respectively) are widely distributed on rocky bottoms and reefs along the south Florida coast. They are the most valuable marine finfish group in Florida, comprising about 25% of the total value of landings in 1984. The three species can be distinguished by morphometric, meristic, and body color characteristics. Younger fish are typically found in shallow, inshore grass beds, and larger, older fish are generally restricted to deep waters. The three species are protogynous hermaphrodites. Sexual transition can occur at any length over about 300 mm SL. An offshore movement apparently coincides with the onset of sexual maturity. Spawning aggregations have been observed throughout the year, but occur mostly between late spring and early summer. Fecundity estimates range from about 800,000 to 5,000,000 eggs per female. Both the eggs and the larvae are planktonic. Their early life history is poorly known. Larvae probably leave the plankton and become benthic at around 20--30 mm SL. Growth rates range from about 2 to 10 mm/month. The three species are unspecialized carnivores, feeding on a variety of fishes, crustaceans, and mollusks. Interspecific competition for food and shelter may be common because of the overlap in distribution, habitat, size, and food habitats. For the three species, a number of predators and parasites have been reported. Both the black and red groupers have been implicated in ciguatera poisonings in south Florida. 70 refs., 3 figs., 3 tabs.

  6. Development of novel microsatellite markers for the Northern Goshawk (Accipiter gentilis) and their utility in cross-species amplification

    Science.gov (United States)

    Haughey, Christy; Sage, George K.; Degange, Gabriel; Sonsthagen, Sarah A.; Talbot, Sandra

    2016-01-01

    The Northern Goshawk (Accipiter gentilis) is a large forest raptor with a Holarctic distribution and, in some portions of its range, a species of conservation concern. To augment previously reported genetic markers, 13 novel polymorphic microsatellite markers were developed to establish individual identification and familial relationships, to assess levels of genetic diversity, and to identify diagnostic markers. Of the 22 loci tested, 13 were polymorphic, seven were monomorphic, and two failed to amplify. This suite of microsatellite loci yielded a combined probability of parental exclusion of 98%; a single individual sampled from a North American population can be reliably identified using a combination of seven of the 13 polymorphic loci. Cross-species screening in Cooper's Hawks (A. cooperii) and Sharp-shinned Hawks (A. striatus) of the 20 loci that successfully amplified in Northern Goshawks identified 13 loci as polymorphic in each species. Six of these loci (Age1303, Age1308, Age1309, Age1312, and Age1314) appeared to be useful in distinguishing between Accipiter species. These markers will be useful to researchers investigating populations of North American accipiters.

  7. Three-dimensional solution structure of ω-conotoxin SO3 determined by 1H NMR

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Cone snails (Conus) elaborate a series of conotoxin (CTX) peptides in their venoms to paralyze their prey. Among these toxins, ω-CTX's specifically target to presynaptic voltage-gated calcium channel subsets, causing inhibition of neurotransmitter release. Ω-CTX SO3 was isolated from the venom of Conus striatus, which is the only available fish-hunting snail near the coast of the South China Sea. The three-dimensional solution structure of ω-CTX SO3, a peptide which is the only ω-conotoxin reported to show high homology with another ω-CTX (MVIIA from C. Magus), has been determined by 1H NMR techniques. The molecular structure of ω-CTX SO3 is stabilized by three disulfide bridges and a short triple-stranded antiparallel ω-sheet with four turns. A comprehensive comparison suggested that the backbone conformation of ω-CTX's was quite conserved, while the length of ω-sheet and the type of some turns might have minor differences.

  8. 溪黄草考证及性状鉴别法的验证%To Textual Research Isodon serra and Verify Character Identification Method

    Institute of Scientific and Technical Information of China (English)

    邓乔华; 王德勤; 黄亦南; 梁惠瑜; 徐友阳; 徐小飞; 张为亮

    2014-01-01

    目的 对溪黄草进行考证,并对药材溪黄草及植物溪黄草的性状鉴别法进行验证.方法 对药材溪黄草及植物溪黄草两种植物的新鲜及干燥枝叶的性状鉴定方法进行验证.结果 药材溪黄草原植物线纹香茶菜Isodon striatus(Benth.) Kudo及变种纤花香茶菜Isodon Iophanthoides var.graciliflora(Benth.) Hara与植物溪黄草Isodon serra(Maxim.)Kudo有显著差别,前二者具有传统溪黄草黄汁及红腺点特征,而后者无黄汁及无红腺点,容易鉴别.结论 药材溪黄草和植物溪黄草采用此性状鉴定方法很容易鉴别出来,植物溪黄草是否可作为药材溪黄草使用值得商榷.此法简单直观,经济易行,有一定的使用价值.

  9. Blood parasites of two Costa Rican amphibians with comments on detection and microfilaria density associated with adult filarial worm intensity.

    Science.gov (United States)

    McKenzie, Valerie J; Starks, Hilary A

    2008-08-01

    The 2 objectives of this study were: (1) to compare parasite detectability in blood smears obtained from toe-clips versus the heart from amphibian hosts; and (2) to test whether microfilariae density is correlated with adult filarial worm intensity. We examined blood parasites of 2 species of amphibians, Rana vaillanti (n = 45) and Eleutherodactylus fitzingeri (n = 36), from Costa Rica collected during the summer of 2003. Separate blood smears were obtained from toe-clips and the heart during necrospy. Eight species of blood parasites were identified from R. vaillanti and 1 from E. fitzingeri. Each parasite species was counted in a 2 x 2.2-cm2 area on each blood smear, and the density of host red blood cells (RBCs) was estimated using a sub-sampling approach, allowing parasite infections to be expressed as individuals per RBC. The detection failure rate for toe-cut smears ranged from 71-100% (x = 92.3%) and from 0-9% (x = 2.4%) for heart smears, depending on parasite species. The density of RBCs was significantly higher in smears produced from heart samples and may explain the differences in detectability. Foleyellides striatus microfilariae densities (per RBC) were significantly correlated with adult female worm intensity (R2 = 0.32, P = 0.011).

  10. Viscoelastic Fracturing As a Migration and Expulsion Mechanism for Hydrocarbons in Shales: Analog Experiments

    Science.gov (United States)

    Van Damme, H.

    2014-12-01

    We report the results of simple laboratory experiments aimed at mimicking the generation, migration, and expulsion process of oil or gas from soft clayey sediments, triggered by thermal decomposition of organic matter. In previously published work, we showed that the injection of fluids into a soft sediment layer confined within a quasi-2D Hele-Shaw cell led to the transition from a viscous fingering invasion regime to a viscoelastic fracturing regime. The transition is controlled by the ratio of the characteristic times for the invasion process and for the structural relaxation in the sediment, respectively (Deborah number). Here we show that expulsion is a discontinuous quasi-periodic process, driven by the elastic energy stored in the embedding layers. We report also about two sets of experiments aimed at understanding the conditions in which fluid generation from multiple sources can generate a highly connected network of fractures for expulsion. In a first set of experiments, a Hele-Shaw cell with multiple injection points and multiple outlets was used. It is shown that, due to attractive elastic interactions between cracks, a network spontaneously forms as soon as invasion proceeds in the viscoelastic regime. On the contrary, no network of migration paths is forming in the viscous fingering regime, due to the effective repulsion of the fluid channels. In the second set of analog experiments, we used a thermostated mini-Hele-Shaw cell, the gap of which was filled with a strong clay mud in which microcrystals of reactive organic matter (azoisobutyronitrile, AIBN) are dispersed, or with a mud prepared with clay particles on which the organic matter was pre-impregnated. AIBN decomposes around 70°C, releasing nitrogen gas. It was again observed that, depending on the viscoelastic properties of the clay matrix, gas evolution occurs either by formation and coalescence of bubbles, or by formation of a percolating network of fractures. The length of the fracture

  11. Duck Valley Reservoirs Fish Stocking and O&M, Annual Progress Report 2007-2008.

    Energy Technology Data Exchange (ETDEWEB)

    Sellman, Jake; Perugini, Carol [Department of Fish, Wildlife, and Parks, Shoshone-Paiute Tribes

    2009-02-20

    The Duck Valley Reservoirs Fish Stocking and Operations and Maintenance Project (DV Fisheries) is an ongoing resident fish program that serves to partially mitigate the loss of anadromous fish that resulted from downstream construction of the federal hydropower system. The project's goals are to enhance subsistence fishing and educational opportunities for Tribal members of the Shoshone-Paiute Tribes and provide fishing opportunities for non-Tribal members. In addition to stocking rainbow trout (Oncorhynchus mykiss) in Mountain View (MVR), Lake Billy Shaw (LBS), and Sheep Creek Reservoirs (SCR), the program is also designed to: maintain healthy aquatic conditions for fish growth and survival, provide superior facilities with wilderness qualities to attract non-Tribal angler use, and offer clear, consistent communication with the Tribal community about this project as well as outreach and education within the region and the local community. Tasks for this performance period fall into three categories: operations and maintenance, monitoring and evaluation, and public outreach. Operation and maintenance of the three reservoirs include maintaining fences, roads, dams and all reservoir structures, feeder canals, water troughs, stock ponds, educational signs, vehicles, equipment, and restroom facilities. Monitoring and evaluation activities include creel, gillnet, wildlife, and bird surveys, water quality and reservoir structures monitoring, native vegetation planting, photo point documentation, and control of encroaching exotic vegetation. Public outreach activities include providing environmental education to school children, providing fishing reports to local newspapers and vendors, updating the website, hosting community environmental events, and fielding numerous phone calls from anglers. The reservoir monitoring program focuses on water quality and fishery success. Sheep Creek Reservoir and Lake Billy Shaw had less than productive trout growth due to water

  12. Paleointensities of the Auckland Excursion from Volcanic Rocks in New Zealand

    Science.gov (United States)

    Mochizuki, N.; Tsunakawa, H.; Shibuya, H.; Cassidy, J.; Smith, I. E.

    2001-12-01

    Shibuya et al. (1992) reported the Auckland excursion from several basaltic lava flows of monogenetic volcanic centers (forced to introduce correction for thermal alterations in laboratory heating, using low temperature part of the Arai plot. We, therefore, applied the double heating technique (DHT) of Shaw method (Tsunakawa and Shaw, 1994), which was capable of detecting inappropriate results by the ARM correction, to the samples. The low temperature demagnetization (LTD) was combined with DHT (Yamamoto et al., submitted) before AF demagnetization and samples were heated in a vacuum of 10-100 Pa. Sixty-one samples from the five lava flows were subjected to the LTD-DHT Shaw method. Twenty-three of these samples yielded successful results passing the selection criteria. Five out of six paleointensities from the Crater Hill lava were consistent with each other. A mean paleointensity was given to be 10.9+/- 1.9 μ T (N=5) for the Crater Hill lava. Five out of seven paleointensities from the Wiri lava, were consistent and a mean was 10.8+/- 1.2 μ T (N=5). Three samples from the Puketutu lava gave a mean paleointensity of 11.4+/- 0.8 μ T (N=3). These three lava flows, Crater Hill, Wiri and Puketutu lava, all recorded the north-down paleodirection and gave almost the same paleointensities of ~ 11 μ T. This concordance of paleointensities and paleodirections supports the reliability of the paleointensity determination. Four paleointensities were obtained from the Hampton Park lava of the west paleodirection, and gave a mean paleointensity of 10.1+/- 1.1 μ T (N=4). The field strength was comparable to that of the north-down group. Three samples from the McLennan Hills lava of the south paleodirection gave quite low paleointensities, a mean of which was calculated to be 2.4+/- 0.6 μ T (N=3). These five paleointensities from the Auckland excursion are no more than one-fifth of the present-field intensity. The corresponding VDMs range from 0.6x1022 to 2.3*E22Am2, which

  13. Experimental study of CO2 dissolution a convection phenomenon at high pressure

    Science.gov (United States)

    Ben Salem, Imen; Chevalier, Sylvie; Faisal, Titly Farhana; Abderrahmane, Hamid; Sassi, Mohamed

    2016-05-01

    The density driven convection phenomenon has a significant role in enhancing the CO2 geological storage capacity. Deep saline aquifers are targeted for large scale geological sequestration. Once the CO2 is injected in saline aquifer, the supercritical CO2 rises up, forms a thin layer of free phase CO2, and the dissolution and molecular diffusion of the dissolved CO2 in brine begins. The CO2 saturated brine is denser than the original brine leading to gravitational convection of CO2 saturated brine. Convection accelerates the dissolution process and thus improves the safety and the efficiency of the sequestration. Laboratory experiments have been previously performed with experimental set-ups allowing the visualization of the phenomenon (1) eventually combined to the measurements of the dissolved CO2 mass transfer (2) as a function of the permeability of the medium. The visualization of the process was possible as Hele-Shaw cells at atmospheric pressure were used. Pressurized cylindrical vessel containing porous media allows measuring mass transfer of CO2 using the pressure decay concept (3) but visualization of the convection/dissolution was not possible for these setups. In this work, we performed experiments in a pressurized transparent cell similar to a Hele-Shaw cell but with bigger aperture. Permeability was varied by changing the size of the glass beads filling the cell. Bromocrysol green was used as a dye to track the pH change due to the presence of dissolved CO2 (1). The phenomenon is captured by a high resolution camera. We studied the effect of the pressure and of the permeability on the fingering pattern, the onset and the timescale of the phenomenon and the quantitative mass transfer of dissolved CO2. Experiments were validated on numerical simulations performed using STOMP (Subsurface Transport Over Multiple Phases) developed by the PNNL (Pacific Northwest National Laboratory) Hydrology group of the Department of Energy, USA. (1) Kneafsey, T

  14. Experimental Setup to Characterize Bentonite Hydration Processes; Diseno experimental para la caracterizacion de los procesos de hidratacion de la bentonita

    Energy Technology Data Exchange (ETDEWEB)

    Bru, A.; Casero, D.; Pastor, J.M.

    2001-07-01

    We present an experimental setup to follow-up the hydration process of a bentonite. Clay samples, of 2 cm x 12 cm x 12 cm, were made and introduced in a Hele-Shaw cell with two PMM windows and two steel frames. In hydration experiments, a fluid enters by an orifice in the frame, located both at the top and the bottom of the cell, to perform hydration in both senses. To get a uniform hydration we place a diffuser near the orifice. Volume influxes in hydration cells are registered in time. The evolution of the developed interface was recorded on a videotape. The video cameras was fixed to a holder so that the vertical direction in the monitor was the same as the direction of the larger extension of the cell. (Author) 6 refs.

  15. A Study on the Chromosomes in Bullfrog Rana catesbeiana%牛蛙(Rana catesbeiana)染色体研究

    Institute of Scientific and Technical Information of China (English)

    朱传炳; 王瑛

    2006-01-01

    对牛蛙(Rana catesbeiana,Shaw)的染色体组型进行了研究.观察骨髓的C-中期细胞,结果证明牛蛙的体细胞染色体数目2n=26,其中有5对大型染色体和8对小型染色体,可以分成A、B、C 3个组,雌性和雄性个体间没有发现异型性染色体.上述结果与前人的研究结果基本一致.但是作者发现牛蛙骨髓细胞的第7、8、10、12号染色体上均有次缢痕.牛蛙的核型为2n=26=22m+4sm.

  16. ATLAS Virtual Visit-Hue-05-08-2014

    CERN Multimedia

    2014-01-01

    Hue University of Sciences (HUSC) is a multidisciplinary education and training institution including graduate and undergraduate education programs, and research activities conducted in the fields of Natural Science, Engineering, Social Science and Humanity. On 5th August, HUSC in collaboration with the ICTP Physics without Frontiers program organized a particle physics masterclass for selected physics students. The goal of this program is to give young physics students the opportunity to learn about the experiments at CERN, in particular performing an analysis with real LHC data, and to motivate and inspire the students to continue onto phyiscs master and PhD programs. Physics without Frontiers: Vietnam is organised by Kate Shaw (ICTP), Loan Truong (SISSA-ICTP), Phuong Dang (Freiburg) and Lan Tran (DESY). - See more at: http://atlas-live-virtual-visit.web.cern.ch/atlas-live-virtual-visit/2014/Hue-2014.html#sthash.4FIZzsgh.dpuf

  17. CULTURAL NATIONALISM AND THE IRISH LITERARY REVIVAL

    Directory of Open Access Journals (Sweden)

    David Pierce

    2002-12-01

    Full Text Available The impact of cultural nationalism on the Insh Literary Revival is a topic of continuing interest for the cultural critic and literary historian alike. In recent years, with the Fa11 of the Berlin Wall, political scientists and others, suchas A.D. Smith, Ernest Gellner, and E.J. Hobsbawm, have also focused on the subject of nationalism. The intention here in this article is to revisit a familiar site in the light of these new ideas and to test their validity or appropriateness in the Irish context. The article, part of a larger project to be published in 2003 by Polity Press under the title A Cultural History of Twentieth-Century Irish Literature, is divided into 5 sections: What ish my Nation?; What is a Nation?; Do Nations Have Navels?; 1890s: Winds of Change; English As We Speak It In Ireland. Among Irish authors discussed are Hyde, Shaw. Yeats, Wilde, Lady Gregory, Joyce, and Beckett.

  18. Observations of highly localized oscillons with multiple crests and troughs

    CERN Document Server

    LI, Xiaochen; Liao, Shijun

    2014-01-01

    Stable, highly localized Faraday's resonant standing waves with multiple crests and troughs were observed in the alcoholic solution partly filled in a Hele-Shaw cell vertically oscillated with a single frequency. Two types of oscillons were observed. The influence of the experimental parameters (such as the concentration of alcoholic solution, the water depth, the frequency and acceleration amplitude of oscillation) on these oscillons were investigated in details. In the same experimental parameters, all of these oscillons have the almost same wave height but rather irregular crest-to-crest distances. Our experiments highly suggest that the complicated oscillons can be regarded as combination of the two elementary oscillons discovered by Rajchenbach et al. (Physical Review Letters, 107, 2011).

  19. Business model innovations: typologies and dimensions in management theory

    OpenAIRE

    Kinderis, Remigijus; Jucevičius, Giedrius

    2013-01-01

    Žvelgdami į tai, kas vyksta aplinkui, jūs klausiat: „Kodėl?“ O aš svajoju apie nebū­tus dalykus ir klausiu: „Kodėl gi ne? (Georg Bernard Shaw (1856–1950)). Straipsnyje teoriniu aspektu analizuojamas verslo modelio apibrėžimas, konstruktas, išskiriami verslo modelio lygiai, pateikiama verslo modelio tyrinėjimų sričių apžvalgos analizė. Atskleidžiami verslo modelio inovacijos motyvai, nauda verslui, nemažai dėmesio skiriama el. verslo modelio komponentams, tipologijai. Pabrėžiamos pagrindinės t...

  20. Adaptive enriched Galerkin methods for miscible displacement problems with entropy residual stabilization

    Science.gov (United States)

    Lee, Sanghyun; Wheeler, Mary F.

    2017-02-01

    We present a novel approach to the simulation of miscible displacement by employing adaptive enriched Galerkin finite element methods (EG) coupled with entropy residual stabilization for transport. In particular, numerical simulations of viscous fingering instabilities in heterogeneous porous media and Hele-Shaw cells are illustrated. EG is formulated by enriching the conforming continuous Galerkin finite element method (CG) with piecewise constant functions. The method provides locally and globally conservative fluxes, which are crucial for coupled flow and transport problems. Moreover, EG has fewer degrees of freedom in comparison with discontinuous Galerkin (DG) and an efficient flow solver has been derived which allows for higher order schemes. Dynamic adaptive mesh refinement is applied in order to reduce computational costs for large-scale three dimensional applications. In addition, entropy residual based stabilization for high order EG transport systems prevents spurious oscillations. Numerical tests are presented to show the capabilities of EG applied to flow and transport.